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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-14 14:57:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-14 14:57:16 -0800
commite7cf773d431a63a2417902696fcc9e0ebdc83bbe (patch)
tree86dbdceb7d91226507a3af0d57e03b0ca664b22e
parentMerge tag 'squashfs-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-next (diff)
parentarm: omap3: twl: remove usb phy init data (diff)
downloadlinux-dev-e7cf773d431a63a2417902696fcc9e0ebdc83bbe.tar.xz
linux-dev-e7cf773d431a63a2417902696fcc9e0ebdc83bbe.zip
Merge tag 'usb-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH: "Here's the big set of USB and PHY patches for 3.19-rc1. The normal churn in the USB gadget area is in here, as well as xhci and other individual USB driver updates. The PHY tree is also in here, as there were dependancies on the USB tree. All of these have been in linux-next" * tag 'usb-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (351 commits) arm: omap3: twl: remove usb phy init data usbip: fix error handling in stub_probe() usb: gadget: udc: missing curly braces USB: mos7720: delete some unneeded code wusb: replace memset by memzero_explicit usbip: remove unneeded structure usb: xhci: fix comment for PORT_DEV_REMOVE xhci: don't use the same variable for stopped and halted rings current TD xhci: clear extra bits from slot context when setting max exit latency xhci: cleanup finish_td function USB: adutux: NULL dereferences on disconnect usb: chipidea: fix platform_no_drv_owner.cocci warnings usb: chipidea: Fixed a few typos in comments Documentation: bindings: add doc for the USB2 ChipIdea USB driver usb: chipidea: add a usb2 driver for ci13xxx usb: chipidea: fix phy handling usb: chipidea: remove duplicate dev_set_drvdata for host_start usb: chipidea: parameter 'mode' isn't needed for hw_device_reset usb: chipidea: add controller reset API usb: chipidea: remove flag CI_HDRC_REQUIRE_TRANSCEIVER ...
-rw-r--r--Documentation/ABI/stable/sysfs-class-udc93
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-hid11
-rw-r--r--Documentation/ABI/testing/configfs-usb-gadget-midi12
-rw-r--r--Documentation/devicetree/bindings/ata/marvell.txt6
-rw-r--r--Documentation/devicetree/bindings/phy/berlin-sata-phy.txt4
-rw-r--r--Documentation/devicetree/bindings/phy/berlin-usb-phy.txt16
-rw-r--r--Documentation/devicetree/bindings/phy/phy-miphy28lp.txt128
-rw-r--r--Documentation/devicetree/bindings/phy/phy-mvebu.txt43
-rw-r--r--Documentation/devicetree/bindings/phy/samsung-phy.txt6
-rw-r--r--Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt24
-rw-r--r--Documentation/devicetree/bindings/usb/dwc3.txt23
-rw-r--r--Documentation/devicetree/bindings/usb/exynos-usb.txt6
-rw-r--r--Documentation/devicetree/bindings/usb/pxa-usb.txt22
-rw-r--r--Documentation/devicetree/bindings/usb/usb-ohci.txt2
-rw-r--r--Documentation/phy.txt60
-rw-r--r--Documentation/usb/gadget_hid.txt7
-rw-r--r--Documentation/usb/usb-serial.txt2
-rw-r--r--arch/arm/boot/dts/am4372.dtsi4
-rw-r--r--arch/arm/mach-omap2/twl-common.c12
-rw-r--r--arch/mips/cavium-octeon/octeon-platform.c274
-rw-r--r--arch/mips/configs/cavium_octeon_defconfig3
-rw-r--r--drivers/pci/quirks.c20
-rw-r--r--drivers/phy/Kconfig23
-rw-r--r--drivers/phy/Makefile3
-rw-r--r--drivers/phy/phy-armada375-usb2.c158
-rw-r--r--drivers/phy/phy-bcm-kona-usb2.c2
-rw-r--r--drivers/phy/phy-berlin-sata.c36
-rw-r--r--drivers/phy/phy-berlin-usb.c223
-rw-r--r--drivers/phy/phy-core.c115
-rw-r--r--drivers/phy/phy-exynos-dp-video.c2
-rw-r--r--drivers/phy/phy-exynos-mipi-video.c2
-rw-r--r--drivers/phy/phy-exynos5-usbdrd.c139
-rw-r--r--drivers/phy/phy-exynos5250-sata.c2
-rw-r--r--drivers/phy/phy-hix5hd2-sata.c7
-rw-r--r--drivers/phy/phy-miphy28lp.c1283
-rw-r--r--drivers/phy/phy-miphy365x.c7
-rw-r--r--drivers/phy/phy-mvebu-sata.c2
-rw-r--r--drivers/phy/phy-omap-usb2.c16
-rw-r--r--drivers/phy/phy-qcom-apq8064-sata.c3
-rw-r--r--drivers/phy/phy-qcom-ipq806x-sata.c3
-rw-r--r--drivers/phy/phy-rcar-gen2.c2
-rw-r--r--drivers/phy/phy-samsung-usb2.c3
-rw-r--r--drivers/phy/phy-spear1310-miphy.c2
-rw-r--r--drivers/phy/phy-spear1340-miphy.c2
-rw-r--r--drivers/phy/phy-stih407-usb.c2
-rw-r--r--drivers/phy/phy-stih41x-usb.c7
-rw-r--r--drivers/phy/phy-sun4i-usb.c11
-rw-r--r--drivers/phy/phy-ti-pipe3.c2
-rw-r--r--drivers/phy/phy-twl4030-usb.c15
-rw-r--r--drivers/phy/phy-xgene.c2
-rw-r--r--drivers/pinctrl/pinctrl-tegra-xusb.c4
-rw-r--r--drivers/usb/chipidea/Makefile1
-rw-r--r--drivers/usb/chipidea/ci.h10
-rw-r--r--drivers/usb/chipidea/ci_hdrc_imx.c45
-rw-r--r--drivers/usb/chipidea/ci_hdrc_msm.c9
-rw-r--r--drivers/usb/chipidea/ci_hdrc_usb2.c115
-rw-r--r--drivers/usb/chipidea/core.c225
-rw-r--r--drivers/usb/chipidea/debug.c2
-rw-r--r--drivers/usb/chipidea/host.c78
-rw-r--r--drivers/usb/chipidea/otg_fsm.c41
-rw-r--r--drivers/usb/chipidea/udc.c22
-rw-r--r--drivers/usb/chipidea/usbmisc_imx.c6
-rw-r--r--drivers/usb/class/cdc-acm.c17
-rw-r--r--drivers/usb/class/cdc-acm.h1
-rw-r--r--drivers/usb/class/usbtmc.c4
-rw-r--r--drivers/usb/common/usb-otg-fsm.c8
-rw-r--r--drivers/usb/core/hcd.c7
-rw-r--r--drivers/usb/core/hub.c18
-rw-r--r--drivers/usb/dwc2/Kconfig68
-rw-r--r--drivers/usb/dwc2/Makefile32
-rw-r--r--drivers/usb/dwc2/core.c10
-rw-r--r--drivers/usb/dwc2/core.h197
-rw-r--r--drivers/usb/dwc2/core_intr.c17
-rw-r--r--drivers/usb/dwc2/gadget.c387
-rw-r--r--drivers/usb/dwc2/hcd.c94
-rw-r--r--drivers/usb/dwc2/hcd.h10
-rw-r--r--drivers/usb/dwc2/pci.c7
-rw-r--r--drivers/usb/dwc2/platform.c44
-rw-r--r--drivers/usb/dwc3/Kconfig2
-rw-r--r--drivers/usb/dwc3/core.c251
-rw-r--r--drivers/usb/dwc3/core.h89
-rw-r--r--drivers/usb/dwc3/dwc3-exynos.c44
-rw-r--r--drivers/usb/dwc3/dwc3-keystone.c6
-rw-r--r--drivers/usb/dwc3/dwc3-omap.c20
-rw-r--r--drivers/usb/dwc3/dwc3-pci.c35
-rw-r--r--drivers/usb/dwc3/dwc3-st.c2
-rw-r--r--drivers/usb/dwc3/ep0.c26
-rw-r--r--drivers/usb/dwc3/gadget.c68
-rw-r--r--drivers/usb/dwc3/host.c22
-rw-r--r--drivers/usb/dwc3/platform_data.h20
-rw-r--r--drivers/usb/dwc3/trace.h20
-rw-r--r--drivers/usb/gadget/Kconfig61
-rw-r--r--drivers/usb/gadget/composite.c64
-rw-r--r--drivers/usb/gadget/configfs.c5
-rw-r--r--drivers/usb/gadget/function/Makefile4
-rw-r--r--drivers/usb/gadget/function/f_hid.c374
-rw-r--r--drivers/usb/gadget/function/f_midi.c364
-rw-r--r--drivers/usb/gadget/function/f_ncm.c3
-rw-r--r--drivers/usb/gadget/function/f_rndis.c3
-rw-r--r--drivers/usb/gadget/function/u_hid.h42
-rw-r--r--drivers/usb/gadget/function/u_midi.h40
-rw-r--r--drivers/usb/gadget/function/u_uac1.c3
-rw-r--r--drivers/usb/gadget/legacy/Kconfig2
-rw-r--r--drivers/usb/gadget/legacy/dbgp.c26
-rw-r--r--drivers/usb/gadget/legacy/gmidi.c43
-rw-r--r--drivers/usb/gadget/legacy/hid.c79
-rw-r--r--drivers/usb/gadget/legacy/printer.c65
-rw-r--r--drivers/usb/gadget/udc/Kconfig2
-rw-r--r--drivers/usb/gadget/udc/Makefile1
-rw-r--r--drivers/usb/gadget/udc/amd5536udc.c12
-rw-r--r--drivers/usb/gadget/udc/at91_udc.c89
-rw-r--r--drivers/usb/gadget/udc/atmel_usba_udc.c25
-rw-r--r--drivers/usb/gadget/udc/bcm63xx_udc.c13
-rw-r--r--drivers/usb/gadget/udc/bdc/Kconfig21
-rw-r--r--drivers/usb/gadget/udc/bdc/Makefile8
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc.h490
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_cmd.c376
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_cmd.h29
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_core.c533
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_dbg.c123
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_dbg.h37
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_ep.c2024
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_ep.h22
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_pci.c132
-rw-r--r--drivers/usb/gadget/udc/bdc/bdc_udc.c587
-rw-r--r--drivers/usb/gadget/udc/dummy_hcd.c36
-rw-r--r--drivers/usb/gadget/udc/fotg210-udc.c3
-rw-r--r--drivers/usb/gadget/udc/fsl_qe_udc.c13
-rw-r--r--drivers/usb/gadget/udc/fsl_udc_core.c19
-rw-r--r--drivers/usb/gadget/udc/fusb300_udc.c3
-rw-r--r--drivers/usb/gadget/udc/goku_udc.c6
-rw-r--r--drivers/usb/gadget/udc/gr_udc.c8
-rw-r--r--drivers/usb/gadget/udc/lpc32xx_udc.c11
-rw-r--r--drivers/usb/gadget/udc/m66592-udc.c5
-rw-r--r--drivers/usb/gadget/udc/mv_u3d_core.c5
-rw-r--r--drivers/usb/gadget/udc/mv_udc_core.c32
-rw-r--r--drivers/usb/gadget/udc/net2272.c66
-rw-r--r--drivers/usb/gadget/udc/net2280.c65
-rw-r--r--drivers/usb/gadget/udc/omap_udc.c6
-rw-r--r--drivers/usb/gadget/udc/pch_udc.c11
-rw-r--r--drivers/usb/gadget/udc/pxa25x_udc.c43
-rw-r--r--drivers/usb/gadget/udc/pxa27x_udc.c152
-rw-r--r--drivers/usb/gadget/udc/pxa27x_udc.h6
-rw-r--r--drivers/usb/gadget/udc/r8a66597-udc.c10
-rw-r--r--drivers/usb/gadget/udc/s3c-hsudc.c16
-rw-r--r--drivers/usb/gadget/udc/s3c2410_udc.c6
-rw-r--r--drivers/usb/gadget/udc/udc-core.c28
-rw-r--r--drivers/usb/gadget/udc/udc-xilinx.c3
-rw-r--r--drivers/usb/host/Kconfig18
-rw-r--r--drivers/usb/host/Makefile1
-rw-r--r--drivers/usb/host/ehci-atmel.c13
-rw-r--r--drivers/usb/host/ehci-exynos.c12
-rw-r--r--drivers/usb/host/ehci-fsl.c12
-rw-r--r--drivers/usb/host/ehci-hcd.c14
-rw-r--r--drivers/usb/host/ehci-hub.c45
-rw-r--r--drivers/usb/host/ehci-msm.c10
-rw-r--r--drivers/usb/host/ehci-mv.c13
-rw-r--r--drivers/usb/host/ehci-mxc.c11
-rw-r--r--drivers/usb/host/ehci-octeon.c188
-rw-r--r--drivers/usb/host/ehci-orion.c14
-rw-r--r--drivers/usb/host/ehci-platform.c27
-rw-r--r--drivers/usb/host/ehci-sead3.c5
-rw-r--r--drivers/usb/host/ehci-sh.c16
-rw-r--r--drivers/usb/host/ehci-spear.c9
-rw-r--r--drivers/usb/host/ehci-tegra.c11
-rw-r--r--drivers/usb/host/ehci-w90x900.c17
-rw-r--r--drivers/usb/host/ehci.h2
-rw-r--r--drivers/usb/host/fotg210.h62
-rw-r--r--drivers/usb/host/fusbh200.h62
-rw-r--r--drivers/usb/host/imx21-hcd.c6
-rw-r--r--drivers/usb/host/octeon2-common.c200
-rw-r--r--drivers/usb/host/ohci-at91.c15
-rw-r--r--drivers/usb/host/ohci-da8xx.c7
-rw-r--r--drivers/usb/host/ohci-exynos.c11
-rw-r--r--drivers/usb/host/ohci-hcd.c5
-rw-r--r--drivers/usb/host/ohci-jz4740.c13
-rw-r--r--drivers/usb/host/ohci-octeon.c202
-rw-r--r--drivers/usb/host/ohci-omap.c2
-rw-r--r--drivers/usb/host/ohci-platform.c53
-rw-r--r--drivers/usb/host/ohci-pxa27x.c11
-rw-r--r--drivers/usb/host/ohci-spear.c11
-rw-r--r--drivers/usb/host/ohci.h19
-rw-r--r--drivers/usb/host/oxu210hp-hcd.c1
-rw-r--r--drivers/usb/host/pci-quirks.c12
-rw-r--r--drivers/usb/host/uhci-platform.c6
-rw-r--r--drivers/usb/host/xhci-plat.c10
-rw-r--r--drivers/usb/host/xhci-ring.c113
-rw-r--r--drivers/usb/host/xhci.c7
-rw-r--r--drivers/usb/host/xhci.h4
-rw-r--r--drivers/usb/misc/adutux.c5
-rw-r--r--drivers/usb/misc/sisusbvga/sisusb.c3
-rw-r--r--drivers/usb/misc/usb3503.c8
-rw-r--r--drivers/usb/misc/yurex.c6
-rw-r--r--drivers/usb/musb/Kconfig5
-rw-r--r--drivers/usb/musb/am35x.c32
-rw-r--r--drivers/usb/musb/blackfin.c74
-rw-r--r--drivers/usb/musb/da8xx.c30
-rw-r--r--drivers/usb/musb/davinci.c22
-rw-r--r--drivers/usb/musb/jz4740.c2
-rw-r--r--drivers/usb/musb/musb_core.c335
-rw-r--r--drivers/usb/musb/musb_core.h87
-rw-r--r--drivers/usb/musb/musb_cppi41.c10
-rw-r--r--drivers/usb/musb/musb_debugfs.c57
-rw-r--r--drivers/usb/musb/musb_dsps.c37
-rw-r--r--drivers/usb/musb/musb_gadget.c58
-rw-r--r--drivers/usb/musb/musb_host.c8
-rw-r--r--drivers/usb/musb/musb_io.h106
-rw-r--r--drivers/usb/musb/musb_regs.h26
-rw-r--r--drivers/usb/musb/musb_virthub.c23
-rw-r--r--drivers/usb/musb/musbhsdma.c7
-rw-r--r--drivers/usb/musb/omap2430.c52
-rw-r--r--drivers/usb/musb/tusb6010.c102
-rw-r--r--drivers/usb/musb/ux500.c16
-rw-r--r--drivers/usb/musb/ux500_dma.c11
-rw-r--r--drivers/usb/phy/phy-ab8500-usb.c33
-rw-r--r--drivers/usb/phy/phy-am335x-control.c4
-rw-r--r--drivers/usb/phy/phy-fsl-usb.c27
-rw-r--r--drivers/usb/phy/phy-fsl-usb.h2
-rw-r--r--drivers/usb/phy/phy-generic.c8
-rw-r--r--drivers/usb/phy/phy-gpio-vbus-usb.c16
-rw-r--r--drivers/usb/phy/phy-isp1301-omap.c104
-rw-r--r--drivers/usb/phy/phy-msm-usb.c107
-rw-r--r--drivers/usb/phy/phy-mv-usb.c56
-rw-r--r--drivers/usb/phy/phy-mxs-usb.c4
-rw-r--r--drivers/usb/phy/phy-rcar-gen2-usb.c4
-rw-r--r--drivers/usb/phy/phy-rcar-usb.c12
-rw-r--r--drivers/usb/phy/phy-tahvo.c34
-rw-r--r--drivers/usb/phy/phy-tegra-usb.c9
-rw-r--r--drivers/usb/phy/phy-ulpi.c6
-rw-r--r--drivers/usb/phy/phy.c16
-rw-r--r--drivers/usb/renesas_usbhs/common.c14
-rw-r--r--drivers/usb/renesas_usbhs/common.h7
-rw-r--r--drivers/usb/renesas_usbhs/fifo.c111
-rw-r--r--drivers/usb/renesas_usbhs/fifo.h10
-rw-r--r--drivers/usb/renesas_usbhs/mod_gadget.c41
-rw-r--r--drivers/usb/renesas_usbhs/mod_host.c2
-rw-r--r--drivers/usb/renesas_usbhs/pipe.c8
-rw-r--r--drivers/usb/renesas_usbhs/rcar2.c73
-rw-r--r--drivers/usb/serial/Kconfig5
-rw-r--r--drivers/usb/serial/keyspan_pda.c16
-rw-r--r--drivers/usb/serial/kobil_sct.c2
-rw-r--r--drivers/usb/serial/mos7720.c8
-rw-r--r--drivers/usb/serial/mos7840.c4
-rw-r--r--drivers/usb/serial/qcserial.c33
-rw-r--r--drivers/usb/serial/usb-serial-simple.c10
-rw-r--r--drivers/usb/storage/debug.c7
-rw-r--r--drivers/usb/storage/debug.h10
-rw-r--r--drivers/usb/storage/initializers.c3
-rw-r--r--drivers/usb/storage/transport.c17
-rw-r--r--drivers/usb/storage/uas.c64
-rw-r--r--drivers/usb/storage/usb.c36
-rw-r--r--drivers/usb/usbip/stub_dev.c26
-rw-r--r--drivers/usb/usbip/vhci_hcd.c9
-rw-r--r--drivers/usb/wusbcore/dev-sysfs.c2
-rw-r--r--drivers/usb/wusbcore/security.c8
-rw-r--r--drivers/uwb/rsv.c4
-rw-r--r--include/dt-bindings/phy/phy.h19
-rw-r--r--include/linux/i2c/twl.h2
-rw-r--r--include/linux/pci_ids.h1
-rw-r--r--include/linux/phy/phy.h52
-rw-r--r--include/linux/platform_data/dwc3-exynos.h24
-rw-r--r--include/linux/usb/chipidea.h5
-rw-r--r--include/linux/usb/composite.h7
-rw-r--r--include/linux/usb/ehci-dbgp.h83
-rw-r--r--include/linux/usb/ehci_def.h65
-rw-r--r--include/linux/usb/gadget.h5
-rw-r--r--include/linux/usb/hcd.h3
-rw-r--r--include/linux/usb/otg.h7
-rw-r--r--include/linux/usb/phy.h6
-rw-r--r--include/linux/usb/renesas_usbhs.h4
-rw-r--r--tools/usb/usbip/src/usbipd.c2
271 files changed, 11292 insertions, 3548 deletions
diff --git a/Documentation/ABI/stable/sysfs-class-udc b/Documentation/ABI/stable/sysfs-class-udc
new file mode 100644
index 000000000000..85d3dac2e204
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-class-udc
@@ -0,0 +1,93 @@
+What: /sys/class/udc/<udc>/a_alt_hnp_support
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates if an OTG A-Host supports HNP at an alternate port.
+Users:
+
+What: /sys/class/udc/<udc>/a_hnp_support
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates if an OTG A-Host supports HNP at this port.
+Users:
+
+What: /sys/class/udc/<udc>/b_hnp_enable
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates if an OTG A-Host enabled HNP support.
+Users:
+
+What: /sys/class/udc/<udc>/current_speed
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates the current negotiated speed at this port.
+Users:
+
+What: /sys/class/udc/<udc>/is_a_peripheral
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates that this port is the default Host on an OTG session
+ but HNP was used to switch roles.
+Users:
+
+What: /sys/class/udc/<udc>/is_otg
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates that this port support OTG.
+Users:
+
+What: /sys/class/udc/<udc>/maximum_speed
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates the maximum USB speed supported by this port.
+Users:
+
+What: /sys/class/udc/<udc>/maximum_speed
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates the maximum USB speed supported by this port.
+Users:
+
+What: /sys/class/udc/<udc>/soft_connect
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Allows users to disconnect data pullup resistors thus causing a
+ logical disconnection from the USB Host.
+Users:
+
+What: /sys/class/udc/<udc>/srp
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Allows users to manually start Session Request Protocol.
+Users:
+
+What: /sys/class/udc/<udc>/state
+Date: June 2011
+KernelVersion: 3.1
+Contact: Felipe Balbi <balbi@kernel.org>
+Description:
+ Indicates current state of the USB Device Controller. Valid
+ states are: 'not-attached', 'attached', 'powered',
+ 'reconnecting', 'unauthenticated', 'default', 'addressed',
+ 'configured', and 'suspended'; however not all USB Device
+ Controllers support reporting all states.
+Users:
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-hid b/Documentation/ABI/testing/configfs-usb-gadget-hid
new file mode 100644
index 000000000000..f12e00e6baa3
--- /dev/null
+++ b/Documentation/ABI/testing/configfs-usb-gadget-hid
@@ -0,0 +1,11 @@
+What: /config/usb-gadget/gadget/functions/hid.name
+Date: Nov 2014
+KernelVersion: 3.19
+Description:
+ The attributes:
+
+ protocol - HID protocol to use
+ report_desc - blob corresponding to HID report descriptors
+ except the data passed through /dev/hidg<N>
+ report_length - HID report length
+ subclass - HID device subclass to use
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-midi b/Documentation/ABI/testing/configfs-usb-gadget-midi
new file mode 100644
index 000000000000..6b341df7249c
--- /dev/null
+++ b/Documentation/ABI/testing/configfs-usb-gadget-midi
@@ -0,0 +1,12 @@
+What: /config/usb-gadget/gadget/functions/midi.name
+Date: Nov 2014
+KernelVersion: 3.19
+Description:
+ The attributes:
+
+ index - index value for the USB MIDI adapter
+ id - ID string for the USB MIDI adapter
+ buflen - MIDI buffer length
+ qlen - USB read request queue length
+ in_ports - number of MIDI input ports
+ out_ports - number of MIDI output ports
diff --git a/Documentation/devicetree/bindings/ata/marvell.txt b/Documentation/devicetree/bindings/ata/marvell.txt
index 1c8351604d38..b460edd12766 100644
--- a/Documentation/devicetree/bindings/ata/marvell.txt
+++ b/Documentation/devicetree/bindings/ata/marvell.txt
@@ -6,11 +6,17 @@ Required Properties:
- interrupts : Interrupt controller is using
- nr-ports : Number of SATA ports in use.
+Optional Properties:
+- phys : List of phandles to sata phys
+- phy-names : Should be "0", "1", etc, one number per phandle
+
Example:
sata@80000 {
compatible = "marvell,orion-sata";
reg = <0x80000 0x5000>;
interrupts = <21>;
+ phys = <&sata_phy0>, <&sata_phy1>;
+ phy-names = "0", "1";
nr-ports = <2>;
}
diff --git a/Documentation/devicetree/bindings/phy/berlin-sata-phy.txt b/Documentation/devicetree/bindings/phy/berlin-sata-phy.txt
index 88f8c23384c0..c0155f842f62 100644
--- a/Documentation/devicetree/bindings/phy/berlin-sata-phy.txt
+++ b/Documentation/devicetree/bindings/phy/berlin-sata-phy.txt
@@ -2,7 +2,9 @@ Berlin SATA PHY
---------------
Required properties:
-- compatible: should be "marvell,berlin2q-sata-phy"
+- compatible: should be one of
+ "marvell,berlin2-sata-phy"
+ "marvell,berlin2q-sata-phy"
- address-cells: should be 1
- size-cells: should be 0
- phy-cells: from the generic PHY bindings, must be 1
diff --git a/Documentation/devicetree/bindings/phy/berlin-usb-phy.txt b/Documentation/devicetree/bindings/phy/berlin-usb-phy.txt
new file mode 100644
index 000000000000..be33780f668e
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/berlin-usb-phy.txt
@@ -0,0 +1,16 @@
+* Marvell Berlin USB PHY
+
+Required properties:
+- compatible: "marvell,berlin2-usb-phy" or "marvell,berlin2cd-usb-phy"
+- reg: base address and length of the registers
+- #phys-cells: should be 0
+- resets: reference to the reset controller
+
+Example:
+
+ usb-phy@f774000 {
+ compatible = "marvell,berlin2-usb-phy";
+ reg = <0xf774000 0x128>;
+ #phy-cells = <0>;
+ resets = <&chip 0x104 14>;
+ };
diff --git a/Documentation/devicetree/bindings/phy/phy-miphy28lp.txt b/Documentation/devicetree/bindings/phy/phy-miphy28lp.txt
new file mode 100644
index 000000000000..46a135dae6b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-miphy28lp.txt
@@ -0,0 +1,128 @@
+STMicroelectronics STi MIPHY28LP PHY binding
+============================================
+
+This binding describes a miphy device that is used to control PHY hardware
+for SATA, PCIe or USB3.
+
+Required properties (controller (parent) node):
+- compatible : Should be "st,miphy28lp-phy".
+- st,syscfg : Should be a phandle of the system configuration register group
+ which contain the SATA, PCIe or USB3 mode setting bits.
+
+Required nodes : A sub-node is required for each channel the controller
+ provides. Address range information including the usual
+ 'reg' and 'reg-names' properties are used inside these
+ nodes to describe the controller's topology. These nodes
+ are translated by the driver's .xlate() function.
+
+Required properties (port (child) node):
+- #phy-cells : Should be 1 (See second example)
+ Cell after port phandle is device type from:
+ - PHY_TYPE_SATA
+ - PHY_TYPE_PCI
+ - PHY_TYPE_USB3
+- reg : Address and length of the register set for the device.
+- reg-names : The names of the register addresses corresponding to the registers
+ filled in "reg". It can also contain the offset of the system configuration
+ registers used as glue-logic to setup the device for SATA/PCIe or USB3
+ devices.
+- resets : phandle to the parent reset controller.
+- reset-names : Associated name must be "miphy-sw-rst".
+
+Optional properties (port (child) node):
+- st,osc-rdy : to check the MIPHY0_OSC_RDY status in the glue-logic. This
+ is not available in all the MiPHY. For example, for STiH407, only the
+ MiPHY0 has this bit.
+- st,osc-force-ext : to select the external oscillator. This can change from
+ different MiPHY inside the same SoC.
+- st,sata_gen : to select which SATA_SPDMODE has to be set in the SATA system config
+ register.
+- st,px_rx_pol_inv : to invert polarity of RXn/RXp (respectively negative line and positive
+ line).
+- st,scc-on : enable ssc to reduce effects of EMI (only for sata or PCIe).
+- st,tx-impedance-comp : to compensate tx impedance avoiding out of range values.
+
+example:
+
+ miphy28lp_phy: miphy28lp@9b22000 {
+ compatible = "st,miphy28lp-phy";
+ st,syscfg = <&syscfg_core>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ phy_port0: port@9b22000 {
+ reg = <0x9b22000 0xff>,
+ <0x9b09000 0xff>,
+ <0x9b04000 0xff>,
+ <0x114 0x4>, /* sysctrl MiPHY cntrl */
+ <0x818 0x4>, /* sysctrl MiPHY status*/
+ <0xe0 0x4>, /* sysctrl PCIe */
+ <0xec 0x4>; /* sysctrl SATA */
+ reg-names = "sata-up",
+ "pcie-up",
+ "pipew",
+ "miphy-ctrl-glue",
+ "miphy-status-glue",
+ "pcie-glue",
+ "sata-glue";
+ #phy-cells = <1>;
+ st,osc-rdy;
+ reset-names = "miphy-sw-rst";
+ resets = <&softreset STIH407_MIPHY0_SOFTRESET>;
+ };
+
+ phy_port1: port@9b2a000 {
+ reg = <0x9b2a000 0xff>,
+ <0x9b19000 0xff>,
+ <0x9b14000 0xff>,
+ <0x118 0x4>,
+ <0x81c 0x4>,
+ <0xe4 0x4>,
+ <0xf0 0x4>;
+ reg-names = "sata-up",
+ "pcie-up",
+ "pipew",
+ "miphy-ctrl-glue",
+ "miphy-status-glue",
+ "pcie-glue",
+ "sata-glue";
+ #phy-cells = <1>;
+ st,osc-force-ext;
+ reset-names = "miphy-sw-rst";
+ resets = <&softreset STIH407_MIPHY1_SOFTRESET>;
+ };
+
+ phy_port2: port@8f95000 {
+ reg = <0x8f95000 0xff>,
+ <0x8f90000 0xff>,
+ <0x11c 0x4>,
+ <0x820 0x4>;
+ reg-names = "pipew",
+ "usb3-up",
+ "miphy-ctrl-glue",
+ "miphy-status-glue";
+ #phy-cells = <1>;
+ reset-names = "miphy-sw-rst";
+ resets = <&softreset STIH407_MIPHY2_SOFTRESET>;
+ };
+ };
+
+
+Specifying phy control of devices
+=================================
+
+Device nodes should specify the configuration required in their "phys"
+property, containing a phandle to the miphy device node and an index
+specifying which configuration to use, as described in phy-bindings.txt.
+
+example:
+ sata0: sata@9b20000 {
+ ...
+ phys = <&phy_port0 PHY_TYPE_SATA>;
+ ...
+ };
+
+Macro definitions for the supported miphy configuration can be found in:
+
+include/dt-bindings/phy/phy-miphy28lp.h
diff --git a/Documentation/devicetree/bindings/phy/phy-mvebu.txt b/Documentation/devicetree/bindings/phy/phy-mvebu.txt
new file mode 100644
index 000000000000..f95b6260a3b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-mvebu.txt
@@ -0,0 +1,43 @@
+* Marvell MVEBU SATA PHY
+
+Power control for the SATA phy found on Marvell MVEBU SoCs.
+
+This document extends the binding described in phy-bindings.txt
+
+Required properties :
+
+ - reg : Offset and length of the register set for the SATA device
+ - compatible : Should be "marvell,mvebu-sata-phy"
+ - clocks : phandle of clock and specifier that supplies the device
+ - clock-names : Should be "sata"
+
+Example:
+ sata-phy@84000 {
+ compatible = "marvell,mvebu-sata-phy";
+ reg = <0x84000 0x0334>;
+ clocks = <&gate_clk 15>;
+ clock-names = "sata";
+ #phy-cells = <0>;
+ status = "ok";
+ };
+
+Armada 375 USB cluster
+----------------------
+
+Armada 375 comes with an USB2 host and device controller and an USB3
+controller. The USB cluster control register allows to manage common
+features of both USB controllers.
+
+Required properties:
+
+- compatible: "marvell,armada-375-usb-cluster"
+- reg: Should contain usb cluster register location and length.
+- #phy-cells : from the generic phy bindings, must be 1. Possible
+values are 1 (USB2), 2 (USB3).
+
+Example:
+ usbcluster: usb-cluster@18400 {
+ compatible = "marvell,armada-375-usb-cluster";
+ reg = <0x18400 0x4>;
+ #phy-cells = <1>
+ };
diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt
index 15e0f2c7130f..d5bad920827f 100644
--- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
+++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
@@ -128,6 +128,7 @@ Required properties:
- compatible : Should be set to one of the following supported values:
- "samsung,exynos5250-usbdrd-phy" - for exynos5250 SoC,
- "samsung,exynos5420-usbdrd-phy" - for exynos5420 SoC.
+ - "samsung,exynos7-usbdrd-phy" - for exynos7 SoC.
- reg : Register offset and length of USB DRD PHY register set;
- clocks: Clock IDs array as required by the controller
- clock-names: names of clocks correseponding to IDs in the clock property;
@@ -138,6 +139,11 @@ Required properties:
PHY operations, associated by phy name. It is used to
determine bit values for clock settings register.
For Exynos5420 this is given as 'sclk_usbphy30' in CMU.
+ - optional clocks: Exynos7 SoC has now following additional
+ gate clocks available:
+ - phy_pipe: for PIPE3 phy
+ - phy_utmi: for UTMI+ phy
+ - itp: for ITP generation
- samsung,pmu-syscon: phandle for PMU system controller interface, used to
control pmu registers for power isolation.
- #phy-cells : from the generic PHY bindings, must be 1;
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
new file mode 100644
index 000000000000..27f8b1e5ee46
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
@@ -0,0 +1,24 @@
+* USB2 ChipIdea USB controller for ci13xxx
+
+Required properties:
+- compatible: should be "chipidea,usb2"
+- reg: base address and length of the registers
+- interrupts: interrupt for the USB controller
+
+Optional properties:
+- clocks: reference to the USB clock
+- phys: reference to the USB PHY
+- phy-names: should be "usb-phy"
+- vbus-supply: reference to the VBUS regulator
+
+Example:
+
+ usb@f7ed0000 {
+ compatible = "chipidea,usb2";
+ reg = <0xf7ed0000 0x10000>;
+ interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&chip CLKID_USB0>;
+ phys = <&usb_phy0>;
+ phy-names = "usb-phy";
+ vbus-supply = <&reg_usb0_vbus>;
+ };
diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 471366d6a129..cd7f0454e13a 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -14,6 +14,29 @@ Optional properties:
- phys: from the *Generic PHY* bindings
- phy-names: from the *Generic PHY* bindings
- tx-fifo-resize: determines if the FIFO *has* to be reallocated.
+ - snps,disable_scramble_quirk: true when SW should disable data scrambling.
+ Only really useful for FPGA builds.
+ - snps,has-lpm-erratum: true when DWC3 was configured with LPM Erratum enabled
+ - snps,lpm-nyet-threshold: LPM NYET threshold
+ - snps,u2exit_lfps_quirk: set if we want to enable u2exit lfps quirk
+ - snps,u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk
+ - snps,req_p1p2p3_quirk: when set, the core will always request for
+ P1/P2/P3 transition sequence.
+ - snps,del_p1p2p3_quirk: when set core will delay P1/P2/P3 until a certain
+ amount of 8B10B errors occur.
+ - snps,del_phy_power_chg_quirk: when set core will delay PHY power change
+ from P0 to P1/P2/P3.
+ - snps,lfps_filter_quirk: when set core will filter LFPS reception.
+ - snps,rx_detect_poll_quirk: when set core will disable a 400us delay to start
+ Polling LFPS after RX.Detect.
+ - snps,tx_de_emphasis_quirk: when set core will set Tx de-emphasis value.
+ - snps,tx_de_emphasis: the value driven to the PHY is controlled by the
+ LTSSM during USB3 Compliance mode.
+ - snps,dis_u3_susphy_quirk: when set core will disable USB3 suspend phy.
+ - snps,dis_u2_susphy_quirk: when set core will disable USB2 suspend phy.
+ - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
+ utmi_l1_suspend_n, false when asserts utmi_sleep_n
+ - snps,hird-threshold: HIRD threshold
This is usually a subnode to DWC3 glue to which it is connected.
diff --git a/Documentation/devicetree/bindings/usb/exynos-usb.txt b/Documentation/devicetree/bindings/usb/exynos-usb.txt
index a3b5990d0f2c..9b4dbe3b2acc 100644
--- a/Documentation/devicetree/bindings/usb/exynos-usb.txt
+++ b/Documentation/devicetree/bindings/usb/exynos-usb.txt
@@ -82,8 +82,10 @@ Example:
DWC3
Required properties:
- - compatible: should be "samsung,exynos5250-dwusb3" for USB 3.0 DWC3
- controller.
+ - compatible: should be one of the following -
+ "samsung,exynos5250-dwusb3": for USB 3.0 DWC3 controller on
+ Exynos5250/5420.
+ "samsung,exynos7-dwusb3": for USB 3.0 DWC3 controller on Exynos7.
- #address-cells, #size-cells : should be '1' if the device has sub-nodes
with 'reg' property.
- ranges: allows valid 1:1 translation between child's address space and
diff --git a/Documentation/devicetree/bindings/usb/pxa-usb.txt b/Documentation/devicetree/bindings/usb/pxa-usb.txt
index 79729a948d5a..9c331799b87c 100644
--- a/Documentation/devicetree/bindings/usb/pxa-usb.txt
+++ b/Documentation/devicetree/bindings/usb/pxa-usb.txt
@@ -29,3 +29,25 @@ Example:
marvell,port-mode = <2>; /* PMM_GLOBAL_MODE */
};
+UDC
+
+Required properties:
+ - compatible: Should be "marvell,pxa270-udc" for USB controllers
+ used in device mode.
+ - reg: usb device MMIO address space
+ - interrupts: single interrupt generated by the UDC IP
+ - clocks: input clock of the UDC IP (see clock-bindings.txt)
+
+Optional properties:
+ - gpios:
+ - gpio activated to control the USB D+ pullup (see gpio.txt)
+
+Example:
+
+ pxa27x_udc: udc@40600000 {
+ compatible = "marvell,pxa270-udc";
+ reg = <0x40600000 0x10000>;
+ interrupts = <11>;
+ clocks = <&pxa2xx_clks 11>;
+ gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
+ };
diff --git a/Documentation/devicetree/bindings/usb/usb-ohci.txt b/Documentation/devicetree/bindings/usb/usb-ohci.txt
index b968a1aea995..19233b7365e1 100644
--- a/Documentation/devicetree/bindings/usb/usb-ohci.txt
+++ b/Documentation/devicetree/bindings/usb/usb-ohci.txt
@@ -9,6 +9,8 @@ Optional properties:
- big-endian-regs : boolean, set this for hcds with big-endian registers
- big-endian-desc : boolean, set this for hcds with big-endian descriptors
- big-endian : boolean, for hcds with big-endian-regs + big-endian-desc
+- no-big-frame-no : boolean, set if frame_no lives in bits [15:0] of HCCA
+- num-ports : u32, to override the detected port count
- clocks : a list of phandle + clock specifier pairs
- phys : phandle + phy specifier pair
- phy-names : "usb"
diff --git a/Documentation/phy.txt b/Documentation/phy.txt
index c6594af94d25..371361c69a4b 100644
--- a/Documentation/phy.txt
+++ b/Documentation/phy.txt
@@ -54,18 +54,14 @@ The PHY driver should create the PHY in order for other peripheral controllers
to make use of it. The PHY framework provides 2 APIs to create the PHY.
struct phy *phy_create(struct device *dev, struct device_node *node,
- const struct phy_ops *ops,
- struct phy_init_data *init_data);
+ const struct phy_ops *ops);
struct phy *devm_phy_create(struct device *dev, struct device_node *node,
- const struct phy_ops *ops,
- struct phy_init_data *init_data);
+ const struct phy_ops *ops);
The PHY drivers can use one of the above 2 APIs to create the PHY by passing
-the device pointer, phy ops and init_data.
+the device pointer and phy ops.
phy_ops is a set of function pointers for performing PHY operations such as
-init, exit, power_on and power_off. *init_data* is mandatory to get a reference
-to the PHY in the case of non-dt boot. See section *Board File Initialization*
-on how init_data should be used.
+init, exit, power_on and power_off.
Inorder to dereference the private data (in phy_ops), the phy provider driver
can use phy_set_drvdata() after creating the PHY and use phy_get_drvdata() in
@@ -137,42 +133,18 @@ There are exported APIs like phy_pm_runtime_get, phy_pm_runtime_get_sync,
phy_pm_runtime_put, phy_pm_runtime_put_sync, phy_pm_runtime_allow and
phy_pm_runtime_forbid for performing PM operations.
-8. Board File Initialization
-
-Certain board file initialization is necessary in order to get a reference
-to the PHY in the case of non-dt boot.
-Say we have a single device that implements 3 PHYs that of USB, SATA and PCIe,
-then in the board file the following initialization should be done.
-
-struct phy_consumer consumers[] = {
- PHY_CONSUMER("dwc3.0", "usb"),
- PHY_CONSUMER("pcie.0", "pcie"),
- PHY_CONSUMER("sata.0", "sata"),
-};
-PHY_CONSUMER takes 2 parameters, first is the device name of the controller
-(PHY consumer) and second is the port name.
-
-struct phy_init_data init_data = {
- .consumers = consumers,
- .num_consumers = ARRAY_SIZE(consumers),
-};
-
-static const struct platform_device pipe3_phy_dev = {
- .name = "pipe3-phy",
- .id = -1,
- .dev = {
- .platform_data = {
- .init_data = &init_data,
- },
- },
-};
-
-then, while doing phy_create, the PHY driver should pass this init_data
- phy_create(dev, ops, pdata->init_data);
-
-and the controller driver (phy consumer) should pass the port name along with
-the device to get a reference to the PHY
- phy_get(dev, "pcie");
+8. PHY Mappings
+
+In order to get reference to a PHY without help from DeviceTree, the framework
+offers lookups which can be compared to clkdev that allow clk structures to be
+bound to devices. A lookup can be made be made during runtime when a handle to
+the struct phy already exists.
+
+The framework offers the following API for registering and unregistering the
+lookups.
+
+int phy_create_lookup(struct phy *phy, const char *con_id, const char *dev_id);
+void phy_remove_lookup(struct phy *phy, const char *con_id, const char *dev_id);
9. DeviceTree Binding
diff --git a/Documentation/usb/gadget_hid.txt b/Documentation/usb/gadget_hid.txt
index 12696c2e43fb..7a0fb8e16e27 100644
--- a/Documentation/usb/gadget_hid.txt
+++ b/Documentation/usb/gadget_hid.txt
@@ -74,6 +74,13 @@ static struct platform_device my_hid = {
You can add as many HID functions as you want, only limited by
the amount of interrupt endpoints your gadget driver supports.
+Configuration with configfs
+
+ Instead of adding fake platform devices and drivers in order to pass
+ some data to the kernel, if HID is a part of a gadget composed with
+ configfs the hidg_func_descriptor.report_desc is passed to the kernel
+ by writing the appropriate stream of bytes to a configfs attribute.
+
Send and receive HID reports
HID reports can be sent/received using read/write on the
diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt
index 5bd7926185e8..947fa62bccf2 100644
--- a/Documentation/usb/usb-serial.txt
+++ b/Documentation/usb/usb-serial.txt
@@ -145,7 +145,7 @@ Keyspan PDA Serial Adapter
Single port DB-9 serial adapter, pushed as a PDA adapter for iMacs (mostly
sold in Macintosh catalogs, comes in a translucent white/green dongle).
Fairly simple device. Firmware is homebrew.
- This driver also works for the Xircom/Entrgra single port serial adapter.
+ This driver also works for the Xircom/Entrega single port serial adapter.
Current status:
Things that work:
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index d42d7865dd53..b62a1cd776cd 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -843,6 +843,8 @@
maximum-speed = "high-speed";
dr_mode = "otg";
status = "disabled";
+ snps,dis_u3_susphy_quirk;
+ snps,dis_u2_susphy_quirk;
};
};
@@ -865,6 +867,8 @@
maximum-speed = "high-speed";
dr_mode = "otg";
status = "disabled";
+ snps,dis_u3_susphy_quirk;
+ snps,dis_u2_susphy_quirk;
};
};
diff --git a/arch/arm/mach-omap2/twl-common.c b/arch/arm/mach-omap2/twl-common.c
index b0d54dae1bcb..4457e731f7a4 100644
--- a/arch/arm/mach-omap2/twl-common.c
+++ b/arch/arm/mach-omap2/twl-common.c
@@ -91,18 +91,8 @@ void __init omap_pmic_late_init(void)
}
#if defined(CONFIG_ARCH_OMAP3)
-struct phy_consumer consumers[] = {
- PHY_CONSUMER("musb-hdrc.0", "usb"),
-};
-
-struct phy_init_data init_data = {
- .consumers = consumers,
- .num_consumers = ARRAY_SIZE(consumers),
-};
-
static struct twl4030_usb_data omap3_usb_pdata = {
- .usb_mode = T2_USB_MODE_ULPI,
- .init_data = &init_data,
+ .usb_mode = T2_USB_MODE_ULPI,
};
static int omap3_batt_table[] = {
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 6df0f4d8f197..b67ddf0f8bcd 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -7,22 +7,27 @@
* Copyright (C) 2008 Wind River Systems
*/
+#include <linux/delay.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/usb.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h>
#include <linux/of_fdt.h>
#include <linux/libfdt.h>
+#include <linux/usb/ehci_pdriver.h>
+#include <linux/usb/ohci_pdriver.h>
#include <asm/octeon/octeon.h>
#include <asm/octeon/cvmx-rnm-defs.h>
#include <asm/octeon/cvmx-helper.h>
#include <asm/octeon/cvmx-helper-board.h>
+#include <asm/octeon/cvmx-uctlx-defs.h>
/* Octeon Random Number Generator. */
static int __init octeon_rng_device_init(void)
@@ -68,6 +73,229 @@ device_initcall(octeon_rng_device_init);
#ifdef CONFIG_USB
+static DEFINE_MUTEX(octeon2_usb_clocks_mutex);
+
+static int octeon2_usb_clock_start_cnt;
+
+static void octeon2_usb_clocks_start(void)
+{
+ u64 div;
+ union cvmx_uctlx_if_ena if_ena;
+ union cvmx_uctlx_clk_rst_ctl clk_rst_ctl;
+ union cvmx_uctlx_uphy_ctl_status uphy_ctl_status;
+ union cvmx_uctlx_uphy_portx_ctl_status port_ctl_status;
+ int i;
+ unsigned long io_clk_64_to_ns;
+
+
+ mutex_lock(&octeon2_usb_clocks_mutex);
+
+ octeon2_usb_clock_start_cnt++;
+ if (octeon2_usb_clock_start_cnt != 1)
+ goto exit;
+
+ io_clk_64_to_ns = 64000000000ull / octeon_get_io_clock_rate();
+
+ /*
+ * Step 1: Wait for voltages stable. That surely happened
+ * before starting the kernel.
+ *
+ * Step 2: Enable SCLK of UCTL by writing UCTL0_IF_ENA[EN] = 1
+ */
+ if_ena.u64 = 0;
+ if_ena.s.en = 1;
+ cvmx_write_csr(CVMX_UCTLX_IF_ENA(0), if_ena.u64);
+
+ /* Step 3: Configure the reference clock, PHY, and HCLK */
+ clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
+
+ /*
+ * If the UCTL looks like it has already been started, skip
+ * the initialization, otherwise bus errors are obtained.
+ */
+ if (clk_rst_ctl.s.hrst)
+ goto end_clock;
+ /* 3a */
+ clk_rst_ctl.s.p_por = 1;
+ clk_rst_ctl.s.hrst = 0;
+ clk_rst_ctl.s.p_prst = 0;
+ clk_rst_ctl.s.h_clkdiv_rst = 0;
+ clk_rst_ctl.s.o_clkdiv_rst = 0;
+ clk_rst_ctl.s.h_clkdiv_en = 0;
+ clk_rst_ctl.s.o_clkdiv_en = 0;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* 3b */
+ /* 12MHz crystal. */
+ clk_rst_ctl.s.p_refclk_sel = 0;
+ clk_rst_ctl.s.p_refclk_div = 0;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* 3c */
+ div = octeon_get_io_clock_rate() / 130000000ull;
+
+ switch (div) {
+ case 0:
+ div = 1;
+ break;
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ break;
+ case 5:
+ div = 4;
+ break;
+ case 6:
+ case 7:
+ div = 6;
+ break;
+ case 8:
+ case 9:
+ case 10:
+ case 11:
+ div = 8;
+ break;
+ default:
+ div = 12;
+ break;
+ }
+ clk_rst_ctl.s.h_div = div;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+ /* Read it back, */
+ clk_rst_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_CLK_RST_CTL(0));
+ clk_rst_ctl.s.h_clkdiv_en = 1;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+ /* 3d */
+ clk_rst_ctl.s.h_clkdiv_rst = 1;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* 3e: delay 64 io clocks */
+ ndelay(io_clk_64_to_ns);
+
+ /*
+ * Step 4: Program the power-on reset field in the UCTL
+ * clock-reset-control register.
+ */
+ clk_rst_ctl.s.p_por = 0;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* Step 5: Wait 1 ms for the PHY clock to start. */
+ mdelay(1);
+
+ /*
+ * Step 6: Program the reset input from automatic test
+ * equipment field in the UPHY CSR
+ */
+ uphy_ctl_status.u64 = cvmx_read_csr(CVMX_UCTLX_UPHY_CTL_STATUS(0));
+ uphy_ctl_status.s.ate_reset = 1;
+ cvmx_write_csr(CVMX_UCTLX_UPHY_CTL_STATUS(0), uphy_ctl_status.u64);
+
+ /* Step 7: Wait for at least 10ns. */
+ ndelay(10);
+
+ /* Step 8: Clear the ATE_RESET field in the UPHY CSR. */
+ uphy_ctl_status.s.ate_reset = 0;
+ cvmx_write_csr(CVMX_UCTLX_UPHY_CTL_STATUS(0), uphy_ctl_status.u64);
+
+ /*
+ * Step 9: Wait for at least 20ns for UPHY to output PHY clock
+ * signals and OHCI_CLK48
+ */
+ ndelay(20);
+
+ /* Step 10: Configure the OHCI_CLK48 and OHCI_CLK12 clocks. */
+ /* 10a */
+ clk_rst_ctl.s.o_clkdiv_rst = 1;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* 10b */
+ clk_rst_ctl.s.o_clkdiv_en = 1;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* 10c */
+ ndelay(io_clk_64_to_ns);
+
+ /*
+ * Step 11: Program the PHY reset field:
+ * UCTL0_CLK_RST_CTL[P_PRST] = 1
+ */
+ clk_rst_ctl.s.p_prst = 1;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+ /* Step 12: Wait 1 uS. */
+ udelay(1);
+
+ /* Step 13: Program the HRESET_N field: UCTL0_CLK_RST_CTL[HRST] = 1 */
+ clk_rst_ctl.s.hrst = 1;
+ cvmx_write_csr(CVMX_UCTLX_CLK_RST_CTL(0), clk_rst_ctl.u64);
+
+end_clock:
+ /* Now we can set some other registers. */
+
+ for (i = 0; i <= 1; i++) {
+ port_ctl_status.u64 =
+ cvmx_read_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0));
+ /* Set txvreftune to 15 to obtain compliant 'eye' diagram. */
+ port_ctl_status.s.txvreftune = 15;
+ port_ctl_status.s.txrisetune = 1;
+ port_ctl_status.s.txpreemphasistune = 1;
+ cvmx_write_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0),
+ port_ctl_status.u64);
+ }
+
+ /* Set uSOF cycle period to 60,000 bits. */
+ cvmx_write_csr(CVMX_UCTLX_EHCI_FLA(0), 0x20ull);
+exit:
+ mutex_unlock(&octeon2_usb_clocks_mutex);
+}
+
+static void octeon2_usb_clocks_stop(void)
+{
+ mutex_lock(&octeon2_usb_clocks_mutex);
+ octeon2_usb_clock_start_cnt--;
+ mutex_unlock(&octeon2_usb_clocks_mutex);
+}
+
+static int octeon_ehci_power_on(struct platform_device *pdev)
+{
+ octeon2_usb_clocks_start();
+ return 0;
+}
+
+static void octeon_ehci_power_off(struct platform_device *pdev)
+{
+ octeon2_usb_clocks_stop();
+}
+
+static struct usb_ehci_pdata octeon_ehci_pdata = {
+ /* Octeon EHCI matches CPU endianness. */
+#ifdef __BIG_ENDIAN
+ .big_endian_mmio = 1,
+#endif
+ .power_on = octeon_ehci_power_on,
+ .power_off = octeon_ehci_power_off,
+};
+
+static void __init octeon_ehci_hw_start(void)
+{
+ union cvmx_uctlx_ehci_ctl ehci_ctl;
+
+ octeon2_usb_clocks_start();
+
+ ehci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_EHCI_CTL(0));
+ /* Use 64-bit addressing. */
+ ehci_ctl.s.ehci_64b_addr_en = 1;
+ ehci_ctl.s.l2c_addr_msb = 0;
+ ehci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
+ ehci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
+ cvmx_write_csr(CVMX_UCTLX_EHCI_CTL(0), ehci_ctl.u64);
+
+ octeon2_usb_clocks_stop();
+}
+
+static u64 octeon_ehci_dma_mask = DMA_BIT_MASK(64);
+
static int __init octeon_ehci_device_init(void)
{
struct platform_device *pd;
@@ -88,7 +316,7 @@ static int __init octeon_ehci_device_init(void)
if (octeon_is_simulation() || usb_disabled())
return 0; /* No USB in the simulator. */
- pd = platform_device_alloc("octeon-ehci", 0);
+ pd = platform_device_alloc("ehci-platform", 0);
if (!pd) {
ret = -ENOMEM;
goto out;
@@ -105,6 +333,10 @@ static int __init octeon_ehci_device_init(void)
if (ret)
goto fail;
+ pd->dev.dma_mask = &octeon_ehci_dma_mask;
+ pd->dev.platform_data = &octeon_ehci_pdata;
+ octeon_ehci_hw_start();
+
ret = platform_device_add(pd);
if (ret)
goto fail;
@@ -117,6 +349,41 @@ out:
}
device_initcall(octeon_ehci_device_init);
+static int octeon_ohci_power_on(struct platform_device *pdev)
+{
+ octeon2_usb_clocks_start();
+ return 0;
+}
+
+static void octeon_ohci_power_off(struct platform_device *pdev)
+{
+ octeon2_usb_clocks_stop();
+}
+
+static struct usb_ohci_pdata octeon_ohci_pdata = {
+ /* Octeon OHCI matches CPU endianness. */
+#ifdef __BIG_ENDIAN
+ .big_endian_mmio = 1,
+#endif
+ .power_on = octeon_ohci_power_on,
+ .power_off = octeon_ohci_power_off,
+};
+
+static void __init octeon_ohci_hw_start(void)
+{
+ union cvmx_uctlx_ohci_ctl ohci_ctl;
+
+ octeon2_usb_clocks_start();
+
+ ohci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_OHCI_CTL(0));
+ ohci_ctl.s.l2c_addr_msb = 0;
+ ohci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
+ ohci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
+ cvmx_write_csr(CVMX_UCTLX_OHCI_CTL(0), ohci_ctl.u64);
+
+ octeon2_usb_clocks_stop();
+}
+
static int __init octeon_ohci_device_init(void)
{
struct platform_device *pd;
@@ -137,7 +404,7 @@ static int __init octeon_ohci_device_init(void)
if (octeon_is_simulation() || usb_disabled())
return 0; /* No USB in the simulator. */
- pd = platform_device_alloc("octeon-ohci", 0);
+ pd = platform_device_alloc("ohci-platform", 0);
if (!pd) {
ret = -ENOMEM;
goto out;
@@ -154,6 +421,9 @@ static int __init octeon_ohci_device_init(void)
if (ret)
goto fail;
+ pd->dev.platform_data = &octeon_ohci_pdata;
+ octeon_ohci_hw_start();
+
ret = platform_device_add(pd);
if (ret)
goto fail;
diff --git a/arch/mips/configs/cavium_octeon_defconfig b/arch/mips/configs/cavium_octeon_defconfig
index b2476a1c4aaa..e57058d4ec22 100644
--- a/arch/mips/configs/cavium_octeon_defconfig
+++ b/arch/mips/configs/cavium_octeon_defconfig
@@ -120,6 +120,9 @@ CONFIG_SPI_OCTEON=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
# CONFIG_USB_SUPPORT is not set
+CONFIG_USB_EHCI_BIG_ENDIAN_MMIO=y
+CONFIG_USB_OHCI_BIG_ENDIAN_MMIO=y
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_DS1307=y
CONFIG_STAGING=y
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 90acb32c85b1..ed6f89b6efe5 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -379,6 +379,26 @@ static void quirk_ati_exploding_mce(struct pci_dev *dev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce);
/*
+ * In the AMD NL platform, this device ([1022:7912]) has a class code of
+ * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will
+ * claim it.
+ * But the dwc3 driver is a more specific driver for this device, and we'd
+ * prefer to use it instead of xhci. To prevent xhci from claiming the
+ * device, change the class code to 0x0c03fe, which the PCI r3.0 spec
+ * defines as "USB device (not host controller)". The dwc3 driver can then
+ * claim it based on its Vendor and Device ID.
+ */
+static void quirk_amd_nl_class(struct pci_dev *pdev)
+{
+ /*
+ * Use 'USB Device' (0x0c03fe) instead of PCI header provided
+ */
+ pdev->class = 0x0c03fe;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
+ quirk_amd_nl_class);
+
+/*
* Let's make the southbridge information explicit instead
* of having to worry about people probing the ACPI areas,
* for example.. (Yes, it happens, and if you read the wrong
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 2a436e607f99..ccad8809ecb1 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -15,6 +15,13 @@ config GENERIC_PHY
phy users can obtain reference to the PHY. All the users of this
framework should select this config.
+config PHY_BERLIN_USB
+ tristate "Marvell Berlin USB PHY Driver"
+ depends on ARCH_BERLIN && RESET_CONTROLLER && HAS_IOMEM && OF
+ select GENERIC_PHY
+ help
+ Enable this to support the USB PHY on Marvell Berlin SoCs.
+
config PHY_BERLIN_SATA
tristate "Marvell Berlin SATA PHY driver"
depends on ARCH_BERLIN && HAS_IOMEM && OF
@@ -22,6 +29,12 @@ config PHY_BERLIN_SATA
help
Enable this to support the SATA PHY on Marvell Berlin SoCs.
+config ARMADA375_USBCLUSTER_PHY
+ def_bool y
+ depends on MACH_ARMADA_375 || COMPILE_TEST
+ depends on OF
+ select GENERIC_PHY
+
config PHY_EXYNOS_MIPI_VIDEO
tristate "S5P/EXYNOS SoC series MIPI CSI-2/DSI PHY driver"
depends on HAS_IOMEM
@@ -38,6 +51,14 @@ config PHY_MVEBU_SATA
depends on OF
select GENERIC_PHY
+config PHY_MIPHY28LP
+ tristate "STMicroelectronics MIPHY28LP PHY driver for STiH407"
+ depends on ARCH_STI
+ select GENERIC_PHY
+ help
+ Enable this to support the miphy transceiver (for SATA/PCIE/USB3)
+ that is part of STMicroelectronics STiH407 SoC.
+
config PHY_MIPHY365X
tristate "STMicroelectronics MIPHY365X PHY driver for STiH41x series"
depends on ARCH_STI
@@ -193,7 +214,7 @@ config PHY_EXYNOS5250_USB2
config PHY_EXYNOS5_USBDRD
tristate "Exynos5 SoC series USB DRD PHY driver"
- depends on ARCH_EXYNOS5 && OF
+ depends on ARCH_EXYNOS && OF
depends on HAS_IOMEM
depends on USB_DWC3_EXYNOS
select GENERIC_PHY
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index c4590fce082f..aa74f961e44e 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -3,11 +3,14 @@
#
obj-$(CONFIG_GENERIC_PHY) += phy-core.o
+obj-$(CONFIG_PHY_BERLIN_USB) += phy-berlin-usb.o
obj-$(CONFIG_PHY_BERLIN_SATA) += phy-berlin-sata.o
+obj-$(CONFIG_ARMADA375_USBCLUSTER_PHY) += phy-armada375-usb2.o
obj-$(CONFIG_BCM_KONA_USB2_PHY) += phy-bcm-kona-usb2.o
obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO) += phy-exynos-dp-video.o
obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o
obj-$(CONFIG_PHY_MVEBU_SATA) += phy-mvebu-sata.o
+obj-$(CONFIG_PHY_MIPHY28LP) += phy-miphy28lp.o
obj-$(CONFIG_PHY_MIPHY365X) += phy-miphy365x.o
obj-$(CONFIG_PHY_RCAR_GEN2) += phy-rcar-gen2.o
obj-$(CONFIG_OMAP_CONTROL_PHY) += phy-omap-control.o
diff --git a/drivers/phy/phy-armada375-usb2.c b/drivers/phy/phy-armada375-usb2.c
new file mode 100644
index 000000000000..ac7d99d01cb3
--- /dev/null
+++ b/drivers/phy/phy-armada375-usb2.c
@@ -0,0 +1,158 @@
+/*
+ * USB cluster support for Armada 375 platform.
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2 or later. This program is licensed "as is"
+ * without any warranty of any kind, whether express or implied.
+ *
+ * Armada 375 comes with an USB2 host and device controller and an
+ * USB3 controller. The USB cluster control register allows to manage
+ * common features of both USB controllers.
+ */
+
+#include <dt-bindings/phy/phy.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+#define USB2_PHY_CONFIG_DISABLE BIT(0)
+
+struct armada375_cluster_phy {
+ struct phy *phy;
+ void __iomem *reg;
+ bool use_usb3;
+ int phy_provided;
+};
+
+static int armada375_usb_phy_init(struct phy *phy)
+{
+ struct armada375_cluster_phy *cluster_phy;
+ u32 reg;
+
+ cluster_phy = dev_get_drvdata(phy->dev.parent);
+ if (!cluster_phy)
+ return -ENODEV;
+
+ reg = readl(cluster_phy->reg);
+ if (cluster_phy->use_usb3)
+ reg |= USB2_PHY_CONFIG_DISABLE;
+ else
+ reg &= ~USB2_PHY_CONFIG_DISABLE;
+ writel(reg, cluster_phy->reg);
+
+ return 0;
+}
+
+static struct phy_ops armada375_usb_phy_ops = {
+ .init = armada375_usb_phy_init,
+ .owner = THIS_MODULE,
+};
+
+/*
+ * Only one controller can use this PHY. We shouldn't have the case
+ * when two controllers want to use this PHY. But if this case occurs
+ * then we provide a phy to the first one and return an error for the
+ * next one. This error has also to be an error returned by
+ * devm_phy_optional_get() so different from ENODEV for USB2. In the
+ * USB3 case it still optional and we use ENODEV.
+ */
+static struct phy *armada375_usb_phy_xlate(struct device *dev,
+ struct of_phandle_args *args)
+{
+ struct armada375_cluster_phy *cluster_phy = dev_get_drvdata(dev);
+
+ if (!cluster_phy)
+ return ERR_PTR(-ENODEV);
+
+ /*
+ * Either the phy had never been requested and then the first
+ * usb claiming it can get it, or it had already been
+ * requested in this case, we only allow to use it with the
+ * same configuration.
+ */
+ if (WARN_ON((cluster_phy->phy_provided != PHY_NONE) &&
+ (cluster_phy->phy_provided != args->args[0]))) {
+ dev_err(dev, "This PHY has already been provided!\n");
+ dev_err(dev, "Check your device tree, only one controller can use it\n.");
+ if (args->args[0] == PHY_TYPE_USB2)
+ return ERR_PTR(-EBUSY);
+ else
+ return ERR_PTR(-ENODEV);
+ }
+
+ if (args->args[0] == PHY_TYPE_USB2)
+ cluster_phy->use_usb3 = false;
+ else if (args->args[0] == PHY_TYPE_USB3)
+ cluster_phy->use_usb3 = true;
+ else {
+ dev_err(dev, "Invalid PHY mode\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ /* Store which phy mode is used for next test */
+ cluster_phy->phy_provided = args->args[0];
+
+ return cluster_phy->phy;
+}
+
+static int armada375_usb_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct phy *phy;
+ struct phy_provider *phy_provider;
+ void __iomem *usb_cluster_base;
+ struct resource *res;
+ struct armada375_cluster_phy *cluster_phy;
+
+ cluster_phy = devm_kzalloc(dev, sizeof(*cluster_phy), GFP_KERNEL);
+ if (!cluster_phy)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ usb_cluster_base = devm_ioremap_resource(&pdev->dev, res);
+ if (!usb_cluster_base)
+ return -ENOMEM;
+
+ phy = devm_phy_create(dev, NULL, &armada375_usb_phy_ops);
+ if (IS_ERR(phy)) {
+ dev_err(dev, "failed to create PHY\n");
+ return PTR_ERR(phy);
+ }
+
+ cluster_phy->phy = phy;
+ cluster_phy->reg = usb_cluster_base;
+
+ dev_set_drvdata(dev, cluster_phy);
+
+ phy_provider = devm_of_phy_provider_register(&pdev->dev,
+ armada375_usb_phy_xlate);
+ return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static const struct of_device_id of_usb_cluster_table[] = {
+ { .compatible = "marvell,armada-375-usb-cluster", },
+ { /* end of list */ },
+};
+MODULE_DEVICE_TABLE(of, of_usb_cluster_table);
+
+static struct platform_driver armada375_usb_phy_driver = {
+ .probe = armada375_usb_phy_probe,
+ .driver = {
+ .of_match_table = of_usb_cluster_table,
+ .name = "armada-375-usb-cluster",
+ .owner = THIS_MODULE,
+ }
+};
+module_platform_driver(armada375_usb_phy_driver);
+
+MODULE_DESCRIPTION("Armada 375 USB cluster driver");
+MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/phy/phy-bcm-kona-usb2.c b/drivers/phy/phy-bcm-kona-usb2.c
index c1e0ca335c0e..ef2dc1aab2b9 100644
--- a/drivers/phy/phy-bcm-kona-usb2.c
+++ b/drivers/phy/phy-bcm-kona-usb2.c
@@ -117,7 +117,7 @@ static int bcm_kona_usb2_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, phy);
- gphy = devm_phy_create(dev, NULL, &ops, NULL);
+ gphy = devm_phy_create(dev, NULL, &ops);
if (IS_ERR(gphy))
return PTR_ERR(gphy);
diff --git a/drivers/phy/phy-berlin-sata.c b/drivers/phy/phy-berlin-sata.c
index 69ced52d72aa..099eee8851e5 100644
--- a/drivers/phy/phy-berlin-sata.c
+++ b/drivers/phy/phy-berlin-sata.c
@@ -30,7 +30,8 @@
#define MBUS_WRITE_REQUEST_SIZE_128 (BIT(2) << 16)
#define MBUS_READ_REQUEST_SIZE_128 (BIT(2) << 19)
-#define PHY_BASE 0x200
+#define BG2_PHY_BASE 0x080
+#define BG2Q_PHY_BASE 0x200
/* register 0x01 */
#define REF_FREF_SEL_25 BIT(0)
@@ -61,15 +62,16 @@ struct phy_berlin_priv {
struct clk *clk;
struct phy_berlin_desc **phys;
unsigned nphys;
+ u32 phy_base;
};
-static inline void phy_berlin_sata_reg_setbits(void __iomem *ctrl_reg, u32 reg,
- u32 mask, u32 val)
+static inline void phy_berlin_sata_reg_setbits(void __iomem *ctrl_reg,
+ u32 phy_base, u32 reg, u32 mask, u32 val)
{
u32 regval;
/* select register */
- writel(PHY_BASE + reg, ctrl_reg + PORT_VSR_ADDR);
+ writel(phy_base + reg, ctrl_reg + PORT_VSR_ADDR);
/* set bits */
regval = readl(ctrl_reg + PORT_VSR_DATA);
@@ -103,17 +105,20 @@ static int phy_berlin_sata_power_on(struct phy *phy)
writel(regval, priv->base + HOST_VSA_DATA);
/* set PHY mode and ref freq to 25 MHz */
- phy_berlin_sata_reg_setbits(ctrl_reg, 0x1, 0xff,
- REF_FREF_SEL_25 | PHY_MODE_SATA);
+ phy_berlin_sata_reg_setbits(ctrl_reg, priv->phy_base, 0x01,
+ 0x00ff, REF_FREF_SEL_25 | PHY_MODE_SATA);
/* set PHY up to 6 Gbps */
- phy_berlin_sata_reg_setbits(ctrl_reg, 0x25, 0xc00, PHY_GEN_MAX_6_0);
+ phy_berlin_sata_reg_setbits(ctrl_reg, priv->phy_base, 0x25,
+ 0x0c00, PHY_GEN_MAX_6_0);
/* set 40 bits width */
- phy_berlin_sata_reg_setbits(ctrl_reg, 0x23, 0xc00, DATA_BIT_WIDTH_40);
+ phy_berlin_sata_reg_setbits(ctrl_reg, priv->phy_base, 0x23,
+ 0x0c00, DATA_BIT_WIDTH_40);
/* use max pll rate */
- phy_berlin_sata_reg_setbits(ctrl_reg, 0x2, 0x0, USE_MAX_PLL_RATE);
+ phy_berlin_sata_reg_setbits(ctrl_reg, priv->phy_base, 0x02,
+ 0x0000, USE_MAX_PLL_RATE);
/* set Gen3 controller speed */
regval = readl(ctrl_reg + PORT_SCR_CTL);
@@ -218,6 +223,11 @@ static int phy_berlin_sata_probe(struct platform_device *pdev)
if (!priv->phys)
return -ENOMEM;
+ if (of_device_is_compatible(dev->of_node, "marvell,berlin2-sata-phy"))
+ priv->phy_base = BG2_PHY_BASE;
+ else
+ priv->phy_base = BG2Q_PHY_BASE;
+
dev_set_drvdata(dev, priv);
spin_lock_init(&priv->lock);
@@ -239,7 +249,7 @@ static int phy_berlin_sata_probe(struct platform_device *pdev)
if (!phy_desc)
return -ENOMEM;
- phy = devm_phy_create(dev, NULL, &phy_berlin_sata_ops, NULL);
+ phy = devm_phy_create(dev, NULL, &phy_berlin_sata_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create PHY %d\n", phy_id);
return PTR_ERR(phy);
@@ -258,13 +268,11 @@ static int phy_berlin_sata_probe(struct platform_device *pdev)
phy_provider =
devm_of_phy_provider_register(dev, phy_berlin_sata_phy_xlate);
- if (IS_ERR(phy_provider))
- return PTR_ERR(phy_provider);
-
- return 0;
+ return PTR_ERR_OR_ZERO(phy_provider);
}
static const struct of_device_id phy_berlin_sata_of_match[] = {
+ { .compatible = "marvell,berlin2-sata-phy" },
{ .compatible = "marvell,berlin2q-sata-phy" },
{ },
};
diff --git a/drivers/phy/phy-berlin-usb.c b/drivers/phy/phy-berlin-usb.c
new file mode 100644
index 000000000000..c8a8d53a6ece
--- /dev/null
+++ b/drivers/phy/phy-berlin-usb.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2014 Marvell Technology Group Ltd.
+ *
+ * Antoine Tenart <antoine.tenart@free-electrons.com>
+ * Jisheng Zhang <jszhang@marvell.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#define USB_PHY_PLL 0x04
+#define USB_PHY_PLL_CONTROL 0x08
+#define USB_PHY_TX_CTRL0 0x10
+#define USB_PHY_TX_CTRL1 0x14
+#define USB_PHY_TX_CTRL2 0x18
+#define USB_PHY_RX_CTRL 0x20
+#define USB_PHY_ANALOG 0x34
+
+/* USB_PHY_PLL */
+#define CLK_REF_DIV(x) ((x) << 4)
+#define FEEDBACK_CLK_DIV(x) ((x) << 8)
+
+/* USB_PHY_PLL_CONTROL */
+#define CLK_STABLE BIT(0)
+#define PLL_CTRL_PIN BIT(1)
+#define PLL_CTRL_REG BIT(2)
+#define PLL_ON BIT(3)
+#define PHASE_OFF_TOL_125 (0x0 << 5)
+#define PHASE_OFF_TOL_250 BIT(5)
+#define KVC0_CALIB (0x0 << 9)
+#define KVC0_REG_CTRL BIT(9)
+#define KVC0_HIGH (0x0 << 10)
+#define KVC0_LOW (0x3 << 10)
+#define CLK_BLK_EN BIT(13)
+
+/* USB_PHY_TX_CTRL0 */
+#define EXT_HS_RCAL_EN BIT(3)
+#define EXT_FS_RCAL_EN BIT(4)
+#define IMPCAL_VTH_DIV(x) ((x) << 5)
+#define EXT_RS_RCAL_DIV(x) ((x) << 8)
+#define EXT_FS_RCAL_DIV(x) ((x) << 12)
+
+/* USB_PHY_TX_CTRL1 */
+#define TX_VDD15_14 (0x0 << 4)
+#define TX_VDD15_15 BIT(4)
+#define TX_VDD15_16 (0x2 << 4)
+#define TX_VDD15_17 (0x3 << 4)
+#define TX_VDD12_VDD (0x0 << 6)
+#define TX_VDD12_11 BIT(6)
+#define TX_VDD12_12 (0x2 << 6)
+#define TX_VDD12_13 (0x3 << 6)
+#define LOW_VDD_EN BIT(8)
+#define TX_OUT_AMP(x) ((x) << 9)
+
+/* USB_PHY_TX_CTRL2 */
+#define TX_CHAN_CTRL_REG(x) ((x) << 0)
+#define DRV_SLEWRATE(x) ((x) << 4)
+#define IMP_CAL_FS_HS_DLY_0 (0x0 << 6)
+#define IMP_CAL_FS_HS_DLY_1 BIT(6)
+#define IMP_CAL_FS_HS_DLY_2 (0x2 << 6)
+#define IMP_CAL_FS_HS_DLY_3 (0x3 << 6)
+#define FS_DRV_EN_MASK(x) ((x) << 8)
+#define HS_DRV_EN_MASK(x) ((x) << 12)
+
+/* USB_PHY_RX_CTRL */
+#define PHASE_FREEZE_DLY_2_CL (0x0 << 0)
+#define PHASE_FREEZE_DLY_4_CL BIT(0)
+#define ACK_LENGTH_8_CL (0x0 << 2)
+#define ACK_LENGTH_12_CL BIT(2)
+#define ACK_LENGTH_16_CL (0x2 << 2)
+#define ACK_LENGTH_20_CL (0x3 << 2)
+#define SQ_LENGTH_3 (0x0 << 4)
+#define SQ_LENGTH_6 BIT(4)
+#define SQ_LENGTH_9 (0x2 << 4)
+#define SQ_LENGTH_12 (0x3 << 4)
+#define DISCON_THRESHOLD_260 (0x0 << 6)
+#define DISCON_THRESHOLD_270 BIT(6)
+#define DISCON_THRESHOLD_280 (0x2 << 6)
+#define DISCON_THRESHOLD_290 (0x3 << 6)
+#define SQ_THRESHOLD(x) ((x) << 8)
+#define LPF_COEF(x) ((x) << 12)
+#define INTPL_CUR_10 (0x0 << 14)
+#define INTPL_CUR_20 BIT(14)
+#define INTPL_CUR_30 (0x2 << 14)
+#define INTPL_CUR_40 (0x3 << 14)
+
+/* USB_PHY_ANALOG */
+#define ANA_PWR_UP BIT(1)
+#define ANA_PWR_DOWN BIT(2)
+#define V2I_VCO_RATIO(x) ((x) << 7)
+#define R_ROTATE_90 (0x0 << 10)
+#define R_ROTATE_0 BIT(10)
+#define MODE_TEST_EN BIT(11)
+#define ANA_TEST_DC_CTRL(x) ((x) << 12)
+
+#define to_phy_berlin_usb_priv(p) \
+ container_of((p), struct phy_berlin_usb_priv, phy)
+
+static const u32 phy_berlin_pll_dividers[] = {
+ /* Berlin 2 */
+ CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
+ /* Berlin 2CD */
+ CLK_REF_DIV(0x6) | FEEDBACK_CLK_DIV(0x55),
+};
+
+struct phy_berlin_usb_priv {
+ void __iomem *base;
+ struct phy *phy;
+ struct reset_control *rst_ctrl;
+ u32 pll_divider;
+};
+
+static int phy_berlin_usb_power_on(struct phy *phy)
+{
+ struct phy_berlin_usb_priv *priv = dev_get_drvdata(phy->dev.parent);
+
+ reset_control_reset(priv->rst_ctrl);
+
+ writel(priv->pll_divider,
+ priv->base + USB_PHY_PLL);
+ writel(CLK_STABLE | PLL_CTRL_REG | PHASE_OFF_TOL_250 | KVC0_REG_CTRL |
+ CLK_BLK_EN, priv->base + USB_PHY_PLL_CONTROL);
+ writel(V2I_VCO_RATIO(0x5) | R_ROTATE_0 | ANA_TEST_DC_CTRL(0x5),
+ priv->base + USB_PHY_ANALOG);
+ writel(PHASE_FREEZE_DLY_4_CL | ACK_LENGTH_16_CL | SQ_LENGTH_12 |
+ DISCON_THRESHOLD_260 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) |
+ INTPL_CUR_30, priv->base + USB_PHY_RX_CTRL);
+
+ writel(TX_VDD12_13 | TX_OUT_AMP(0x3), priv->base + USB_PHY_TX_CTRL1);
+ writel(EXT_HS_RCAL_EN | IMPCAL_VTH_DIV(0x3) | EXT_RS_RCAL_DIV(0x4),
+ priv->base + USB_PHY_TX_CTRL0);
+
+ writel(EXT_HS_RCAL_EN | IMPCAL_VTH_DIV(0x3) | EXT_RS_RCAL_DIV(0x4) |
+ EXT_FS_RCAL_DIV(0x2), priv->base + USB_PHY_TX_CTRL0);
+
+ writel(EXT_HS_RCAL_EN | IMPCAL_VTH_DIV(0x3) | EXT_RS_RCAL_DIV(0x4),
+ priv->base + USB_PHY_TX_CTRL0);
+ writel(TX_CHAN_CTRL_REG(0xf) | DRV_SLEWRATE(0x3) | IMP_CAL_FS_HS_DLY_3 |
+ FS_DRV_EN_MASK(0xd), priv->base + USB_PHY_TX_CTRL2);
+
+ return 0;
+}
+
+static struct phy_ops phy_berlin_usb_ops = {
+ .power_on = phy_berlin_usb_power_on,
+ .owner = THIS_MODULE,
+};
+
+static const struct of_device_id phy_berlin_sata_of_match[] = {
+ {
+ .compatible = "marvell,berlin2-usb-phy",
+ .data = &phy_berlin_pll_dividers[0],
+ },
+ {
+ .compatible = "marvell,berlin2cd-usb-phy",
+ .data = &phy_berlin_pll_dividers[1],
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, phy_berlin_sata_of_match);
+
+static int phy_berlin_usb_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match =
+ of_match_device(phy_berlin_sata_of_match, &pdev->dev);
+ struct phy_berlin_usb_priv *priv;
+ struct resource *res;
+ struct phy_provider *phy_provider;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ priv->rst_ctrl = devm_reset_control_get(&pdev->dev, NULL);
+ if (IS_ERR(priv->rst_ctrl))
+ return PTR_ERR(priv->rst_ctrl);
+
+ priv->pll_divider = *((u32 *)match->data);
+
+ priv->phy = devm_phy_create(&pdev->dev, NULL, &phy_berlin_usb_ops);
+ if (IS_ERR(priv->phy)) {
+ dev_err(&pdev->dev, "failed to create PHY\n");
+ return PTR_ERR(priv->phy);
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ phy_provider =
+ devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);
+ if (IS_ERR(phy_provider))
+ return PTR_ERR(phy_provider);
+
+ return 0;
+}
+
+static struct platform_driver phy_berlin_usb_driver = {
+ .probe = phy_berlin_usb_probe,
+ .driver = {
+ .name = "phy-berlin-usb",
+ .owner = THIS_MODULE,
+ .of_match_table = phy_berlin_sata_of_match,
+ },
+};
+module_platform_driver(phy_berlin_usb_driver);
+
+MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
+MODULE_DESCRIPTION("Marvell Berlin PHY driver for USB");
+MODULE_LICENSE("GPL");
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index ff5eec5af817..a12d35338313 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -26,6 +26,7 @@
static struct class *phy_class;
static DEFINE_MUTEX(phy_provider_mutex);
static LIST_HEAD(phy_provider_list);
+static LIST_HEAD(phys);
static DEFINE_IDA(phy_ida);
static void devm_phy_release(struct device *dev, void *res)
@@ -54,34 +55,79 @@ static int devm_phy_match(struct device *dev, void *res, void *match_data)
return res == match_data;
}
-static struct phy *phy_lookup(struct device *device, const char *port)
+/**
+ * phy_create_lookup() - allocate and register PHY/device association
+ * @phy: the phy of the association
+ * @con_id: connection ID string on device
+ * @dev_id: the device of the association
+ *
+ * Creates and registers phy_lookup entry.
+ */
+int phy_create_lookup(struct phy *phy, const char *con_id, const char *dev_id)
{
- unsigned int count;
- struct phy *phy;
- struct device *dev;
- struct phy_consumer *consumers;
- struct class_dev_iter iter;
+ struct phy_lookup *pl;
- class_dev_iter_init(&iter, phy_class, NULL, NULL);
- while ((dev = class_dev_iter_next(&iter))) {
- phy = to_phy(dev);
+ if (!phy || !dev_id || !con_id)
+ return -EINVAL;
- if (!phy->init_data)
- continue;
- count = phy->init_data->num_consumers;
- consumers = phy->init_data->consumers;
- while (count--) {
- if (!strcmp(consumers->dev_name, dev_name(device)) &&
- !strcmp(consumers->port, port)) {
- class_dev_iter_exit(&iter);
- return phy;
- }
- consumers++;
+ pl = kzalloc(sizeof(*pl), GFP_KERNEL);
+ if (!pl)
+ return -ENOMEM;
+
+ pl->dev_id = dev_id;
+ pl->con_id = con_id;
+ pl->phy = phy;
+
+ mutex_lock(&phy_provider_mutex);
+ list_add_tail(&pl->node, &phys);
+ mutex_unlock(&phy_provider_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(phy_create_lookup);
+
+/**
+ * phy_remove_lookup() - find and remove PHY/device association
+ * @phy: the phy of the association
+ * @con_id: connection ID string on device
+ * @dev_id: the device of the association
+ *
+ * Finds and unregisters phy_lookup entry that was created with
+ * phy_create_lookup().
+ */
+void phy_remove_lookup(struct phy *phy, const char *con_id, const char *dev_id)
+{
+ struct phy_lookup *pl;
+
+ if (!phy || !dev_id || !con_id)
+ return;
+
+ mutex_lock(&phy_provider_mutex);
+ list_for_each_entry(pl, &phys, node)
+ if (pl->phy == phy && !strcmp(pl->dev_id, dev_id) &&
+ !strcmp(pl->con_id, con_id)) {
+ list_del(&pl->node);
+ kfree(pl);
+ break;
}
- }
+ mutex_unlock(&phy_provider_mutex);
+}
+EXPORT_SYMBOL_GPL(phy_remove_lookup);
- class_dev_iter_exit(&iter);
- return ERR_PTR(-ENODEV);
+static struct phy *phy_find(struct device *dev, const char *con_id)
+{
+ const char *dev_id = dev_name(dev);
+ struct phy_lookup *p, *pl = NULL;
+
+ mutex_lock(&phy_provider_mutex);
+ list_for_each_entry(p, &phys, node)
+ if (!strcmp(p->dev_id, dev_id) && !strcmp(p->con_id, con_id)) {
+ pl = p;
+ break;
+ }
+ mutex_unlock(&phy_provider_mutex);
+
+ return pl ? pl->phy : ERR_PTR(-ENODEV);
}
static struct phy_provider *of_phy_provider_lookup(struct device_node *node)
@@ -414,21 +460,13 @@ struct phy *of_phy_simple_xlate(struct device *dev, struct of_phandle_args
{
struct phy *phy;
struct class_dev_iter iter;
- struct device_node *node = dev->of_node;
- struct device_node *child;
class_dev_iter_init(&iter, phy_class, NULL, NULL);
while ((dev = class_dev_iter_next(&iter))) {
phy = to_phy(dev);
- if (node != phy->dev.of_node) {
- for_each_child_of_node(node, child) {
- if (child == phy->dev.of_node)
- goto phy_found;
- }
+ if (args->np != phy->dev.of_node)
continue;
- }
-phy_found:
class_dev_iter_exit(&iter);
return phy;
}
@@ -463,7 +501,7 @@ struct phy *phy_get(struct device *dev, const char *string)
string);
phy = _of_phy_get(dev->of_node, index);
} else {
- phy = phy_lookup(dev, string);
+ phy = phy_find(dev, string);
}
if (IS_ERR(phy))
return phy;
@@ -588,13 +626,11 @@ EXPORT_SYMBOL_GPL(devm_of_phy_get);
* @dev: device that is creating the new phy
* @node: device node of the phy
* @ops: function pointers for performing phy operations
- * @init_data: contains the list of PHY consumers or NULL
*
* Called to create a phy using phy framework.
*/
struct phy *phy_create(struct device *dev, struct device_node *node,
- const struct phy_ops *ops,
- struct phy_init_data *init_data)
+ const struct phy_ops *ops)
{
int ret;
int id;
@@ -632,7 +668,6 @@ struct phy *phy_create(struct device *dev, struct device_node *node,
phy->dev.of_node = node ?: dev->of_node;
phy->id = id;
phy->ops = ops;
- phy->init_data = init_data;
ret = dev_set_name(&phy->dev, "phy-%s.%d", dev_name(dev), id);
if (ret)
@@ -667,7 +702,6 @@ EXPORT_SYMBOL_GPL(phy_create);
* @dev: device that is creating the new phy
* @node: device node of the phy
* @ops: function pointers for performing phy operations
- * @init_data: contains the list of PHY consumers or NULL
*
* Creates a new PHY device adding it to the PHY class.
* While at that, it also associates the device with the phy using devres.
@@ -675,8 +709,7 @@ EXPORT_SYMBOL_GPL(phy_create);
* then, devres data is freed.
*/
struct phy *devm_phy_create(struct device *dev, struct device_node *node,
- const struct phy_ops *ops,
- struct phy_init_data *init_data)
+ const struct phy_ops *ops)
{
struct phy **ptr, *phy;
@@ -684,7 +717,7 @@ struct phy *devm_phy_create(struct device *dev, struct device_node *node,
if (!ptr)
return ERR_PTR(-ENOMEM);
- phy = phy_create(dev, node, ops, init_data);
+ phy = phy_create(dev, node, ops);
if (!IS_ERR(phy)) {
*ptr = phy;
devres_add(dev, ptr);
diff --git a/drivers/phy/phy-exynos-dp-video.c b/drivers/phy/phy-exynos-dp-video.c
index 84f49e5a3f24..f86cbe68ddaf 100644
--- a/drivers/phy/phy-exynos-dp-video.c
+++ b/drivers/phy/phy-exynos-dp-video.c
@@ -112,7 +112,7 @@ static int exynos_dp_video_phy_probe(struct platform_device *pdev)
match = of_match_node(exynos_dp_video_phy_of_match, dev->of_node);
state->drvdata = match->data;
- phy = devm_phy_create(dev, NULL, &exynos_dp_video_phy_ops, NULL);
+ phy = devm_phy_create(dev, NULL, &exynos_dp_video_phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create Display Port PHY\n");
return PTR_ERR(phy);
diff --git a/drivers/phy/phy-exynos-mipi-video.c b/drivers/phy/phy-exynos-mipi-video.c
index 6a9bef138617..943e0f88a120 100644
--- a/drivers/phy/phy-exynos-mipi-video.c
+++ b/drivers/phy/phy-exynos-mipi-video.c
@@ -137,7 +137,7 @@ static int exynos_mipi_video_phy_probe(struct platform_device *pdev)
for (i = 0; i < EXYNOS_MIPI_PHYS_NUM; i++) {
struct phy *phy = devm_phy_create(dev, NULL,
- &exynos_mipi_video_phy_ops, NULL);
+ &exynos_mipi_video_phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create PHY %d\n", i);
return PTR_ERR(phy);
diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c
index f756aca871db..04374018425f 100644
--- a/drivers/phy/phy-exynos5-usbdrd.c
+++ b/drivers/phy/phy-exynos5-usbdrd.c
@@ -141,6 +141,7 @@ struct exynos5_usbdrd_phy_drvdata {
const struct exynos5_usbdrd_phy_config *phy_cfg;
u32 pmu_offset_usbdrd0_phy;
u32 pmu_offset_usbdrd1_phy;
+ bool has_common_clk_gate;
};
/**
@@ -148,6 +149,9 @@ struct exynos5_usbdrd_phy_drvdata {
* @dev: pointer to device instance of this platform device
* @reg_phy: usb phy controller register memory base
* @clk: phy clock for register access
+ * @pipeclk: clock for pipe3 phy
+ * @utmiclk: clock for utmi+ phy
+ * @itpclk: clock for ITP generation
* @drv_data: pointer to SoC level driver data structure
* @phys[]: array for 'EXYNOS5_DRDPHYS_NUM' number of PHY
* instances each with its 'phy' and 'phy_cfg'.
@@ -155,12 +159,16 @@ struct exynos5_usbdrd_phy_drvdata {
* reference clocks' for SS and HS operations
* @ref_clk: reference clock to PHY block from which PHY's
* operational clocks are derived
- * @ref_rate: rate of above reference clock
+ * vbus: VBUS regulator for phy
+ * vbus_boost: Boost regulator for VBUS present on few Exynos boards
*/
struct exynos5_usbdrd_phy {
struct device *dev;
void __iomem *reg_phy;
struct clk *clk;
+ struct clk *pipeclk;
+ struct clk *utmiclk;
+ struct clk *itpclk;
const struct exynos5_usbdrd_phy_drvdata *drv_data;
struct phy_usb_instance {
struct phy *phy;
@@ -172,6 +180,7 @@ struct exynos5_usbdrd_phy {
u32 extrefclk;
struct clk *ref_clk;
struct regulator *vbus;
+ struct regulator *vbus_boost;
};
static inline
@@ -447,13 +456,27 @@ static int exynos5_usbdrd_phy_power_on(struct phy *phy)
dev_dbg(phy_drd->dev, "Request to power_on usbdrd_phy phy\n");
clk_prepare_enable(phy_drd->ref_clk);
+ if (!phy_drd->drv_data->has_common_clk_gate) {
+ clk_prepare_enable(phy_drd->pipeclk);
+ clk_prepare_enable(phy_drd->utmiclk);
+ clk_prepare_enable(phy_drd->itpclk);
+ }
/* Enable VBUS supply */
+ if (phy_drd->vbus_boost) {
+ ret = regulator_enable(phy_drd->vbus_boost);
+ if (ret) {
+ dev_err(phy_drd->dev,
+ "Failed to enable VBUS boost supply\n");
+ goto fail_vbus;
+ }
+ }
+
if (phy_drd->vbus) {
ret = regulator_enable(phy_drd->vbus);
if (ret) {
dev_err(phy_drd->dev, "Failed to enable VBUS supply\n");
- goto fail_vbus;
+ goto fail_vbus_boost;
}
}
@@ -462,8 +485,17 @@ static int exynos5_usbdrd_phy_power_on(struct phy *phy)
return 0;
+fail_vbus_boost:
+ if (phy_drd->vbus_boost)
+ regulator_disable(phy_drd->vbus_boost);
+
fail_vbus:
clk_disable_unprepare(phy_drd->ref_clk);
+ if (!phy_drd->drv_data->has_common_clk_gate) {
+ clk_disable_unprepare(phy_drd->itpclk);
+ clk_disable_unprepare(phy_drd->utmiclk);
+ clk_disable_unprepare(phy_drd->pipeclk);
+ }
return ret;
}
@@ -481,8 +513,15 @@ static int exynos5_usbdrd_phy_power_off(struct phy *phy)
/* Disable VBUS supply */
if (phy_drd->vbus)
regulator_disable(phy_drd->vbus);
+ if (phy_drd->vbus_boost)
+ regulator_disable(phy_drd->vbus_boost);
clk_disable_unprepare(phy_drd->ref_clk);
+ if (!phy_drd->drv_data->has_common_clk_gate) {
+ clk_disable_unprepare(phy_drd->itpclk);
+ clk_disable_unprepare(phy_drd->pipeclk);
+ clk_disable_unprepare(phy_drd->utmiclk);
+ }
return 0;
}
@@ -506,6 +545,57 @@ static struct phy_ops exynos5_usbdrd_phy_ops = {
.owner = THIS_MODULE,
};
+static int exynos5_usbdrd_phy_clk_handle(struct exynos5_usbdrd_phy *phy_drd)
+{
+ unsigned long ref_rate;
+ int ret;
+
+ phy_drd->clk = devm_clk_get(phy_drd->dev, "phy");
+ if (IS_ERR(phy_drd->clk)) {
+ dev_err(phy_drd->dev, "Failed to get phy clock\n");
+ return PTR_ERR(phy_drd->clk);
+ }
+
+ phy_drd->ref_clk = devm_clk_get(phy_drd->dev, "ref");
+ if (IS_ERR(phy_drd->ref_clk)) {
+ dev_err(phy_drd->dev, "Failed to get phy reference clock\n");
+ return PTR_ERR(phy_drd->ref_clk);
+ }
+ ref_rate = clk_get_rate(phy_drd->ref_clk);
+
+ ret = exynos5_rate_to_clk(ref_rate, &phy_drd->extrefclk);
+ if (ret) {
+ dev_err(phy_drd->dev, "Clock rate (%ld) not supported\n",
+ ref_rate);
+ return ret;
+ }
+
+ if (!phy_drd->drv_data->has_common_clk_gate) {
+ phy_drd->pipeclk = devm_clk_get(phy_drd->dev, "phy_pipe");
+ if (IS_ERR(phy_drd->pipeclk)) {
+ dev_info(phy_drd->dev,
+ "PIPE3 phy operational clock not specified\n");
+ phy_drd->pipeclk = NULL;
+ }
+
+ phy_drd->utmiclk = devm_clk_get(phy_drd->dev, "phy_utmi");
+ if (IS_ERR(phy_drd->utmiclk)) {
+ dev_info(phy_drd->dev,
+ "UTMI phy operational clock not specified\n");
+ phy_drd->utmiclk = NULL;
+ }
+
+ phy_drd->itpclk = devm_clk_get(phy_drd->dev, "itp");
+ if (IS_ERR(phy_drd->itpclk)) {
+ dev_info(phy_drd->dev,
+ "ITP clock from main OSC not specified\n");
+ phy_drd->itpclk = NULL;
+ }
+ }
+
+ return 0;
+}
+
static const struct exynos5_usbdrd_phy_config phy_cfg_exynos5[] = {
{
.id = EXYNOS5_DRDPHY_UTMI,
@@ -525,11 +615,19 @@ static const struct exynos5_usbdrd_phy_drvdata exynos5420_usbdrd_phy = {
.phy_cfg = phy_cfg_exynos5,
.pmu_offset_usbdrd0_phy = EXYNOS5_USBDRD_PHY_CONTROL,
.pmu_offset_usbdrd1_phy = EXYNOS5420_USBDRD1_PHY_CONTROL,
+ .has_common_clk_gate = true,
};
static const struct exynos5_usbdrd_phy_drvdata exynos5250_usbdrd_phy = {
.phy_cfg = phy_cfg_exynos5,
.pmu_offset_usbdrd0_phy = EXYNOS5_USBDRD_PHY_CONTROL,
+ .has_common_clk_gate = true,
+};
+
+static const struct exynos5_usbdrd_phy_drvdata exynos7_usbdrd_phy = {
+ .phy_cfg = phy_cfg_exynos5,
+ .pmu_offset_usbdrd0_phy = EXYNOS5_USBDRD_PHY_CONTROL,
+ .has_common_clk_gate = false,
};
static const struct of_device_id exynos5_usbdrd_phy_of_match[] = {
@@ -539,6 +637,9 @@ static const struct of_device_id exynos5_usbdrd_phy_of_match[] = {
}, {
.compatible = "samsung,exynos5420-usbdrd-phy",
.data = &exynos5420_usbdrd_phy
+ }, {
+ .compatible = "samsung,exynos7-usbdrd-phy",
+ .data = &exynos7_usbdrd_phy
},
{ },
};
@@ -555,7 +656,6 @@ static int exynos5_usbdrd_phy_probe(struct platform_device *pdev)
const struct exynos5_usbdrd_phy_drvdata *drv_data;
struct regmap *reg_pmu;
u32 pmu_offset;
- unsigned long ref_rate;
int i, ret;
int channel;
@@ -576,23 +676,9 @@ static int exynos5_usbdrd_phy_probe(struct platform_device *pdev)
drv_data = match->data;
phy_drd->drv_data = drv_data;
- phy_drd->clk = devm_clk_get(dev, "phy");
- if (IS_ERR(phy_drd->clk)) {
- dev_err(dev, "Failed to get clock of phy controller\n");
- return PTR_ERR(phy_drd->clk);
- }
-
- phy_drd->ref_clk = devm_clk_get(dev, "ref");
- if (IS_ERR(phy_drd->ref_clk)) {
- dev_err(dev, "Failed to get reference clock of usbdrd phy\n");
- return PTR_ERR(phy_drd->ref_clk);
- }
- ref_rate = clk_get_rate(phy_drd->ref_clk);
-
- ret = exynos5_rate_to_clk(ref_rate, &phy_drd->extrefclk);
+ ret = exynos5_usbdrd_phy_clk_handle(phy_drd);
if (ret) {
- dev_err(phy_drd->dev, "Clock rate (%ld) not supported\n",
- ref_rate);
+ dev_err(dev, "Failed to initialize clocks\n");
return ret;
}
@@ -622,7 +708,7 @@ static int exynos5_usbdrd_phy_probe(struct platform_device *pdev)
break;
}
- /* Get Vbus regulator */
+ /* Get Vbus regulators */
phy_drd->vbus = devm_regulator_get(dev, "vbus");
if (IS_ERR(phy_drd->vbus)) {
ret = PTR_ERR(phy_drd->vbus);
@@ -633,12 +719,21 @@ static int exynos5_usbdrd_phy_probe(struct platform_device *pdev)
phy_drd->vbus = NULL;
}
+ phy_drd->vbus_boost = devm_regulator_get(dev, "vbus-boost");
+ if (IS_ERR(phy_drd->vbus_boost)) {
+ ret = PTR_ERR(phy_drd->vbus_boost);
+ if (ret == -EPROBE_DEFER)
+ return ret;
+
+ dev_warn(dev, "Failed to get VBUS boost supply regulator\n");
+ phy_drd->vbus_boost = NULL;
+ }
+
dev_vdbg(dev, "Creating usbdrd_phy phy\n");
for (i = 0; i < EXYNOS5_DRDPHYS_NUM; i++) {
struct phy *phy = devm_phy_create(dev, NULL,
- &exynos5_usbdrd_phy_ops,
- NULL);
+ &exynos5_usbdrd_phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "Failed to create usbdrd_phy phy\n");
return PTR_ERR(phy);
diff --git a/drivers/phy/phy-exynos5250-sata.c b/drivers/phy/phy-exynos5250-sata.c
index 54cf4ae60d29..bc858cc800a1 100644
--- a/drivers/phy/phy-exynos5250-sata.c
+++ b/drivers/phy/phy-exynos5250-sata.c
@@ -210,7 +210,7 @@ static int exynos_sata_phy_probe(struct platform_device *pdev)
return ret;
}
- sata_phy->phy = devm_phy_create(dev, NULL, &exynos_sata_phy_ops, NULL);
+ sata_phy->phy = devm_phy_create(dev, NULL, &exynos_sata_phy_ops);
if (IS_ERR(sata_phy->phy)) {
clk_disable_unprepare(sata_phy->phyclk);
dev_err(dev, "failed to create PHY\n");
diff --git a/drivers/phy/phy-hix5hd2-sata.c b/drivers/phy/phy-hix5hd2-sata.c
index d5d978085c6d..34915b4202f1 100644
--- a/drivers/phy/phy-hix5hd2-sata.c
+++ b/drivers/phy/phy-hix5hd2-sata.c
@@ -156,7 +156,7 @@ static int hix5hd2_sata_phy_probe(struct platform_device *pdev)
if (IS_ERR(priv->peri_ctrl))
priv->peri_ctrl = NULL;
- phy = devm_phy_create(dev, NULL, &hix5hd2_sata_phy_ops, NULL);
+ phy = devm_phy_create(dev, NULL, &hix5hd2_sata_phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create PHY\n");
return PTR_ERR(phy);
@@ -164,10 +164,7 @@ static int hix5hd2_sata_phy_probe(struct platform_device *pdev)
phy_set_drvdata(phy, priv);
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
- if (IS_ERR(phy_provider))
- return PTR_ERR(phy_provider);
-
- return 0;
+ return PTR_ERR_OR_ZERO(phy_provider);
}
static const struct of_device_id hix5hd2_sata_phy_of_match[] = {
diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c
new file mode 100644
index 000000000000..e34da13885e8
--- /dev/null
+++ b/drivers/phy/phy-miphy28lp.c
@@ -0,0 +1,1283 @@
+/*
+ * Copyright (C) 2014 STMicroelectronics
+ *
+ * STMicroelectronics PHY driver MiPHY28lp (for SoC STiH407).
+ *
+ * Author: Alexandre Torgue <alexandre.torgue@st.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+#include <linux/clk.h>
+#include <linux/phy/phy.h>
+#include <linux/delay.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include <dt-bindings/phy/phy.h>
+
+/* MiPHY registers */
+#define MIPHY_CONF_RESET 0x00
+#define RST_APPLI_SW BIT(0)
+#define RST_CONF_SW BIT(1)
+#define RST_MACRO_SW BIT(2)
+
+#define MIPHY_RESET 0x01
+#define RST_PLL_SW BIT(0)
+#define RST_COMP_SW BIT(2)
+
+#define MIPHY_STATUS_1 0x02
+#define PHY_RDY BIT(0)
+#define HFC_RDY BIT(1)
+#define HFC_PLL BIT(2)
+
+#define MIPHY_CONTROL 0x04
+#define TERM_EN_SW BIT(2)
+#define DIS_LINK_RST BIT(3)
+#define AUTO_RST_RX BIT(4)
+#define PX_RX_POL BIT(5)
+
+#define MIPHY_BOUNDARY_SEL 0x0a
+#define TX_SEL BIT(6)
+#define SSC_SEL BIT(4)
+#define GENSEL_SEL BIT(0)
+
+#define MIPHY_BOUNDARY_1 0x0b
+#define MIPHY_BOUNDARY_2 0x0c
+#define SSC_EN_SW BIT(2)
+
+#define MIPHY_PLL_CLKREF_FREQ 0x0d
+#define MIPHY_SPEED 0x0e
+#define TX_SPDSEL_80DEC 0
+#define TX_SPDSEL_40DEC 1
+#define TX_SPDSEL_20DEC 2
+#define RX_SPDSEL_80DEC 0
+#define RX_SPDSEL_40DEC (1 << 2)
+#define RX_SPDSEL_20DEC (2 << 2)
+
+#define MIPHY_CONF 0x0f
+#define MIPHY_CTRL_TEST_SEL 0x20
+#define MIPHY_CTRL_TEST_1 0x21
+#define MIPHY_CTRL_TEST_2 0x22
+#define MIPHY_CTRL_TEST_3 0x23
+#define MIPHY_CTRL_TEST_4 0x24
+#define MIPHY_FEEDBACK_TEST 0x25
+#define MIPHY_DEBUG_BUS 0x26
+#define MIPHY_DEBUG_STATUS_MSB 0x27
+#define MIPHY_DEBUG_STATUS_LSB 0x28
+#define MIPHY_PWR_RAIL_1 0x29
+#define MIPHY_PWR_RAIL_2 0x2a
+#define MIPHY_SYNCHAR_CONTROL 0x30
+
+#define MIPHY_COMP_FSM_1 0x3a
+#define COMP_START BIT(6)
+
+#define MIPHY_COMP_FSM_6 0x3f
+#define COMP_DONE BIT(7)
+
+#define MIPHY_COMP_POSTP 0x42
+#define MIPHY_TX_CTRL_1 0x49
+#define TX_REG_STEP_0V 0
+#define TX_REG_STEP_P_25MV 1
+#define TX_REG_STEP_P_50MV 2
+#define TX_REG_STEP_N_25MV 7
+#define TX_REG_STEP_N_50MV 6
+#define TX_REG_STEP_N_75MV 5
+
+#define MIPHY_TX_CTRL_2 0x4a
+#define TX_SLEW_SW_40_PS 0
+#define TX_SLEW_SW_80_PS 1
+#define TX_SLEW_SW_120_PS 2
+
+#define MIPHY_TX_CTRL_3 0x4b
+#define MIPHY_TX_CAL_MAN 0x4e
+#define TX_SLEW_CAL_MAN_EN BIT(0)
+
+#define MIPHY_TST_BIAS_BOOST_2 0x62
+#define MIPHY_BIAS_BOOST_1 0x63
+#define MIPHY_BIAS_BOOST_2 0x64
+#define MIPHY_RX_DESBUFF_FDB_2 0x67
+#define MIPHY_RX_DESBUFF_FDB_3 0x68
+#define MIPHY_SIGDET_COMPENS1 0x69
+#define MIPHY_SIGDET_COMPENS2 0x6a
+#define MIPHY_JITTER_PERIOD 0x6b
+#define MIPHY_JITTER_AMPLITUDE_1 0x6c
+#define MIPHY_JITTER_AMPLITUDE_2 0x6d
+#define MIPHY_JITTER_AMPLITUDE_3 0x6e
+#define MIPHY_RX_K_GAIN 0x78
+#define MIPHY_RX_BUFFER_CTRL 0x7a
+#define VGA_GAIN BIT(0)
+#define EQ_DC_GAIN BIT(2)
+#define EQ_BOOST_GAIN BIT(3)
+
+#define MIPHY_RX_VGA_GAIN 0x7b
+#define MIPHY_RX_EQU_GAIN_1 0x7f
+#define MIPHY_RX_EQU_GAIN_2 0x80
+#define MIPHY_RX_EQU_GAIN_3 0x81
+#define MIPHY_RX_CAL_CTRL_1 0x97
+#define MIPHY_RX_CAL_CTRL_2 0x98
+
+#define MIPHY_RX_CAL_OFFSET_CTRL 0x99
+#define CAL_OFFSET_VGA_64 (0x03 << 0)
+#define CAL_OFFSET_THRESHOLD_64 (0x03 << 2)
+#define VGA_OFFSET_POLARITY BIT(4)
+#define OFFSET_COMPENSATION_EN BIT(6)
+
+#define MIPHY_RX_CAL_VGA_STEP 0x9a
+#define MIPHY_RX_CAL_EYE_MIN 0x9d
+#define MIPHY_RX_CAL_OPT_LENGTH 0x9f
+#define MIPHY_RX_LOCK_CTRL_1 0xc1
+#define MIPHY_RX_LOCK_SETTINGS_OPT 0xc2
+#define MIPHY_RX_LOCK_STEP 0xc4
+
+#define MIPHY_RX_SIGDET_SLEEP_OA 0xc9
+#define MIPHY_RX_SIGDET_SLEEP_SEL 0xca
+#define MIPHY_RX_SIGDET_WAIT_SEL 0xcb
+#define MIPHY_RX_SIGDET_DATA_SEL 0xcc
+#define EN_ULTRA_LOW_POWER BIT(0)
+#define EN_FIRST_HALF BIT(1)
+#define EN_SECOND_HALF BIT(2)
+#define EN_DIGIT_SIGNAL_CHECK BIT(3)
+
+#define MIPHY_RX_POWER_CTRL_1 0xcd
+#define MIPHY_RX_POWER_CTRL_2 0xce
+#define MIPHY_PLL_CALSET_CTRL 0xd3
+#define MIPHY_PLL_CALSET_1 0xd4
+#define MIPHY_PLL_CALSET_2 0xd5
+#define MIPHY_PLL_CALSET_3 0xd6
+#define MIPHY_PLL_CALSET_4 0xd7
+#define MIPHY_PLL_SBR_1 0xe3
+#define SET_NEW_CHANGE BIT(1)
+
+#define MIPHY_PLL_SBR_2 0xe4
+#define MIPHY_PLL_SBR_3 0xe5
+#define MIPHY_PLL_SBR_4 0xe6
+#define MIPHY_PLL_COMMON_MISC_2 0xe9
+#define START_ACT_FILT BIT(6)
+
+#define MIPHY_PLL_SPAREIN 0xeb
+
+/*
+ * On STiH407 the glue logic can be different among MiPHY devices; for example:
+ * MiPHY0: OSC_FORCE_EXT means:
+ * 0: 30MHz crystal clk - 1: 100MHz ext clk routed through MiPHY1
+ * MiPHY1: OSC_FORCE_EXT means:
+ * 1: 30MHz crystal clk - 0: 100MHz ext clk routed through MiPHY1
+ * Some devices have not the possibility to check if the osc is ready.
+ */
+#define MIPHY_OSC_FORCE_EXT BIT(3)
+#define MIPHY_OSC_RDY BIT(5)
+
+#define MIPHY_CTRL_MASK 0x0f
+#define MIPHY_CTRL_DEFAULT 0
+#define MIPHY_CTRL_SYNC_D_EN BIT(2)
+
+/* SATA / PCIe defines */
+#define SATA_CTRL_MASK 0x07
+#define PCIE_CTRL_MASK 0xff
+#define SATA_CTRL_SELECT_SATA 1
+#define SATA_CTRL_SELECT_PCIE 0
+#define SYSCFG_PCIE_PCIE_VAL 0x80
+#define SATA_SPDMODE 1
+
+#define MIPHY_SATA_BANK_NB 3
+#define MIPHY_PCIE_BANK_NB 2
+
+struct miphy28lp_phy {
+ struct phy *phy;
+ struct miphy28lp_dev *phydev;
+ void __iomem *base;
+ void __iomem *pipebase;
+
+ bool osc_force_ext;
+ bool osc_rdy;
+ bool px_rx_pol_inv;
+ bool ssc;
+ bool tx_impedance;
+
+ struct reset_control *miphy_rst;
+
+ u32 sata_gen;
+
+ /* Sysconfig registers offsets needed to configure the device */
+ u32 syscfg_miphy_ctrl;
+ u32 syscfg_miphy_status;
+ u32 syscfg_pci;
+ u32 syscfg_sata;
+ u8 type;
+};
+
+struct miphy28lp_dev {
+ struct device *dev;
+ struct regmap *regmap;
+ struct mutex miphy_mutex;
+ struct miphy28lp_phy **phys;
+};
+
+struct miphy_initval {
+ u16 reg;
+ u16 val;
+};
+
+enum miphy_sata_gen { SATA_GEN1, SATA_GEN2, SATA_GEN3 };
+
+static char *PHY_TYPE_name[] = { "sata-up", "pcie-up", "", "usb3-up" };
+
+struct pll_ratio {
+ int clk_ref;
+ int calset_1;
+ int calset_2;
+ int calset_3;
+ int calset_4;
+ int cal_ctrl;
+};
+
+static struct pll_ratio sata_pll_ratio = {
+ .clk_ref = 0x1e,
+ .calset_1 = 0xc8,
+ .calset_2 = 0x00,
+ .calset_3 = 0x00,
+ .calset_4 = 0x00,
+ .cal_ctrl = 0x00,
+};
+
+static struct pll_ratio pcie_pll_ratio = {
+ .clk_ref = 0x1e,
+ .calset_1 = 0xa6,
+ .calset_2 = 0xaa,
+ .calset_3 = 0xaa,
+ .calset_4 = 0x00,
+ .cal_ctrl = 0x00,
+};
+
+static struct pll_ratio usb3_pll_ratio = {
+ .clk_ref = 0x1e,
+ .calset_1 = 0xa6,
+ .calset_2 = 0xaa,
+ .calset_3 = 0xaa,
+ .calset_4 = 0x04,
+ .cal_ctrl = 0x00,
+};
+
+struct miphy28lp_pll_gen {
+ int bank;
+ int speed;
+ int bias_boost_1;
+ int bias_boost_2;
+ int tx_ctrl_1;
+ int tx_ctrl_2;
+ int tx_ctrl_3;
+ int rx_k_gain;
+ int rx_vga_gain;
+ int rx_equ_gain_1;
+ int rx_equ_gain_2;
+ int rx_equ_gain_3;
+ int rx_buff_ctrl;
+};
+
+static struct miphy28lp_pll_gen sata_pll_gen[] = {
+ {
+ .bank = 0x00,
+ .speed = TX_SPDSEL_80DEC | RX_SPDSEL_80DEC,
+ .bias_boost_1 = 0x00,
+ .bias_boost_2 = 0xae,
+ .tx_ctrl_2 = 0x53,
+ .tx_ctrl_3 = 0x00,
+ .rx_buff_ctrl = EQ_BOOST_GAIN | EQ_DC_GAIN | VGA_GAIN,
+ .rx_vga_gain = 0x00,
+ .rx_equ_gain_1 = 0x7d,
+ .rx_equ_gain_2 = 0x56,
+ .rx_equ_gain_3 = 0x00,
+ },
+ {
+ .bank = 0x01,
+ .speed = TX_SPDSEL_40DEC | RX_SPDSEL_40DEC,
+ .bias_boost_1 = 0x00,
+ .bias_boost_2 = 0xae,
+ .tx_ctrl_2 = 0x72,
+ .tx_ctrl_3 = 0x20,
+ .rx_buff_ctrl = EQ_BOOST_GAIN | EQ_DC_GAIN | VGA_GAIN,
+ .rx_vga_gain = 0x00,
+ .rx_equ_gain_1 = 0x7d,
+ .rx_equ_gain_2 = 0x56,
+ .rx_equ_gain_3 = 0x00,
+ },
+ {
+ .bank = 0x02,
+ .speed = TX_SPDSEL_20DEC | RX_SPDSEL_20DEC,
+ .bias_boost_1 = 0x00,
+ .bias_boost_2 = 0xae,
+ .tx_ctrl_2 = 0xc0,
+ .tx_ctrl_3 = 0x20,
+ .rx_buff_ctrl = EQ_BOOST_GAIN | EQ_DC_GAIN | VGA_GAIN,
+ .rx_vga_gain = 0x00,
+ .rx_equ_gain_1 = 0x7d,
+ .rx_equ_gain_2 = 0x56,
+ .rx_equ_gain_3 = 0x00,
+ },
+};
+
+static struct miphy28lp_pll_gen pcie_pll_gen[] = {
+ {
+ .bank = 0x00,
+ .speed = TX_SPDSEL_40DEC | RX_SPDSEL_40DEC,
+ .bias_boost_1 = 0x00,
+ .bias_boost_2 = 0xa5,
+ .tx_ctrl_1 = TX_REG_STEP_N_25MV,
+ .tx_ctrl_2 = 0x71,
+ .tx_ctrl_3 = 0x60,
+ .rx_k_gain = 0x98,
+ .rx_buff_ctrl = EQ_BOOST_GAIN | EQ_DC_GAIN | VGA_GAIN,
+ .rx_vga_gain = 0x00,
+ .rx_equ_gain_1 = 0x79,
+ .rx_equ_gain_2 = 0x56,
+ },
+ {
+ .bank = 0x01,
+ .speed = TX_SPDSEL_20DEC | RX_SPDSEL_20DEC,
+ .bias_boost_1 = 0x00,
+ .bias_boost_2 = 0xa5,
+ .tx_ctrl_1 = TX_REG_STEP_N_25MV,
+ .tx_ctrl_2 = 0x70,
+ .tx_ctrl_3 = 0x60,
+ .rx_k_gain = 0xcc,
+ .rx_buff_ctrl = EQ_BOOST_GAIN | EQ_DC_GAIN | VGA_GAIN,
+ .rx_vga_gain = 0x00,
+ .rx_equ_gain_1 = 0x78,
+ .rx_equ_gain_2 = 0x07,
+ },
+};
+
+static inline void miphy28lp_set_reset(struct miphy28lp_phy *miphy_phy)
+{
+ void *base = miphy_phy->base;
+ u8 val;
+
+ /* Putting Macro in reset */
+ writeb_relaxed(RST_APPLI_SW, base + MIPHY_CONF_RESET);
+
+ val = RST_APPLI_SW | RST_CONF_SW;
+ writeb_relaxed(val, base + MIPHY_CONF_RESET);
+
+ writeb_relaxed(RST_APPLI_SW, base + MIPHY_CONF_RESET);
+
+ /* Bringing the MIPHY-CPU registers out of reset */
+ if (miphy_phy->type == PHY_TYPE_PCIE) {
+ val = AUTO_RST_RX | TERM_EN_SW;
+ writeb_relaxed(val, base + MIPHY_CONTROL);
+ } else {
+ val = AUTO_RST_RX | TERM_EN_SW | DIS_LINK_RST;
+ writeb_relaxed(val, base + MIPHY_CONTROL);
+ }
+}
+
+static inline void miphy28lp_pll_calibration(struct miphy28lp_phy *miphy_phy,
+ struct pll_ratio *pll_ratio)
+{
+ void *base = miphy_phy->base;
+ u8 val;
+
+ /* Applying PLL Settings */
+ writeb_relaxed(0x1d, base + MIPHY_PLL_SPAREIN);
+ writeb_relaxed(pll_ratio->clk_ref, base + MIPHY_PLL_CLKREF_FREQ);
+
+ /* PLL Ratio */
+ writeb_relaxed(pll_ratio->calset_1, base + MIPHY_PLL_CALSET_1);
+ writeb_relaxed(pll_ratio->calset_2, base + MIPHY_PLL_CALSET_2);
+ writeb_relaxed(pll_ratio->calset_3, base + MIPHY_PLL_CALSET_3);
+ writeb_relaxed(pll_ratio->calset_4, base + MIPHY_PLL_CALSET_4);
+ writeb_relaxed(pll_ratio->cal_ctrl, base + MIPHY_PLL_CALSET_CTRL);
+
+ writeb_relaxed(TX_SEL, base + MIPHY_BOUNDARY_SEL);
+
+ val = (0x68 << 1) | TX_SLEW_CAL_MAN_EN;
+ writeb_relaxed(val, base + MIPHY_TX_CAL_MAN);
+
+ val = VGA_OFFSET_POLARITY | CAL_OFFSET_THRESHOLD_64 | CAL_OFFSET_VGA_64;
+
+ if (miphy_phy->type != PHY_TYPE_SATA)
+ val |= OFFSET_COMPENSATION_EN;
+
+ writeb_relaxed(val, base + MIPHY_RX_CAL_OFFSET_CTRL);
+
+ if (miphy_phy->type == PHY_TYPE_USB3) {
+ writeb_relaxed(0x00, base + MIPHY_CONF);
+ writeb_relaxed(0x70, base + MIPHY_RX_LOCK_STEP);
+ writeb_relaxed(EN_FIRST_HALF, base + MIPHY_RX_SIGDET_SLEEP_OA);
+ writeb_relaxed(EN_FIRST_HALF, base + MIPHY_RX_SIGDET_SLEEP_SEL);
+ writeb_relaxed(EN_FIRST_HALF, base + MIPHY_RX_SIGDET_WAIT_SEL);
+
+ val = EN_DIGIT_SIGNAL_CHECK | EN_FIRST_HALF;
+ writeb_relaxed(val, base + MIPHY_RX_SIGDET_DATA_SEL);
+ }
+
+}
+
+static inline void miphy28lp_sata_config_gen(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(sata_pll_gen); i++) {
+ struct miphy28lp_pll_gen *gen = &sata_pll_gen[i];
+
+ /* Banked settings */
+ writeb_relaxed(gen->bank, base + MIPHY_CONF);
+ writeb_relaxed(gen->speed, base + MIPHY_SPEED);
+ writeb_relaxed(gen->bias_boost_1, base + MIPHY_BIAS_BOOST_1);
+ writeb_relaxed(gen->bias_boost_2, base + MIPHY_BIAS_BOOST_2);
+
+ /* TX buffer Settings */
+ writeb_relaxed(gen->tx_ctrl_2, base + MIPHY_TX_CTRL_2);
+ writeb_relaxed(gen->tx_ctrl_3, base + MIPHY_TX_CTRL_3);
+
+ /* RX Buffer Settings */
+ writeb_relaxed(gen->rx_buff_ctrl, base + MIPHY_RX_BUFFER_CTRL);
+ writeb_relaxed(gen->rx_vga_gain, base + MIPHY_RX_VGA_GAIN);
+ writeb_relaxed(gen->rx_equ_gain_1, base + MIPHY_RX_EQU_GAIN_1);
+ writeb_relaxed(gen->rx_equ_gain_2, base + MIPHY_RX_EQU_GAIN_2);
+ writeb_relaxed(gen->rx_equ_gain_3, base + MIPHY_RX_EQU_GAIN_3);
+ }
+}
+
+static inline void miphy28lp_pcie_config_gen(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(pcie_pll_gen); i++) {
+ struct miphy28lp_pll_gen *gen = &pcie_pll_gen[i];
+
+ /* Banked settings */
+ writeb_relaxed(gen->bank, base + MIPHY_CONF);
+ writeb_relaxed(gen->speed, base + MIPHY_SPEED);
+ writeb_relaxed(gen->bias_boost_1, base + MIPHY_BIAS_BOOST_1);
+ writeb_relaxed(gen->bias_boost_2, base + MIPHY_BIAS_BOOST_2);
+
+ /* TX buffer Settings */
+ writeb_relaxed(gen->tx_ctrl_1, base + MIPHY_TX_CTRL_1);
+ writeb_relaxed(gen->tx_ctrl_2, base + MIPHY_TX_CTRL_2);
+ writeb_relaxed(gen->tx_ctrl_3, base + MIPHY_TX_CTRL_3);
+
+ writeb_relaxed(gen->rx_k_gain, base + MIPHY_RX_K_GAIN);
+
+ /* RX Buffer Settings */
+ writeb_relaxed(gen->rx_buff_ctrl, base + MIPHY_RX_BUFFER_CTRL);
+ writeb_relaxed(gen->rx_vga_gain, base + MIPHY_RX_VGA_GAIN);
+ writeb_relaxed(gen->rx_equ_gain_1, base + MIPHY_RX_EQU_GAIN_1);
+ writeb_relaxed(gen->rx_equ_gain_2, base + MIPHY_RX_EQU_GAIN_2);
+ }
+}
+
+static inline int miphy28lp_wait_compensation(struct miphy28lp_phy *miphy_phy)
+{
+ unsigned long finish = jiffies + 5 * HZ;
+ u8 val;
+
+ /* Waiting for Compensation to complete */
+ do {
+ val = readb_relaxed(miphy_phy->base + MIPHY_COMP_FSM_6);
+
+ if (time_after_eq(jiffies, finish))
+ return -EBUSY;
+ cpu_relax();
+ } while (!(val & COMP_DONE));
+
+ return 0;
+}
+
+
+static inline int miphy28lp_compensation(struct miphy28lp_phy *miphy_phy,
+ struct pll_ratio *pll_ratio)
+{
+ void __iomem *base = miphy_phy->base;
+
+ /* Poll for HFC ready after reset release */
+ /* Compensation measurement */
+ writeb_relaxed(RST_PLL_SW | RST_COMP_SW, base + MIPHY_RESET);
+
+ writeb_relaxed(0x00, base + MIPHY_PLL_COMMON_MISC_2);
+ writeb_relaxed(pll_ratio->clk_ref, base + MIPHY_PLL_CLKREF_FREQ);
+ writeb_relaxed(COMP_START, base + MIPHY_COMP_FSM_1);
+
+ if (miphy_phy->type == PHY_TYPE_PCIE)
+ writeb_relaxed(RST_PLL_SW, base + MIPHY_RESET);
+
+ writeb_relaxed(0x00, base + MIPHY_RESET);
+ writeb_relaxed(START_ACT_FILT, base + MIPHY_PLL_COMMON_MISC_2);
+ writeb_relaxed(SET_NEW_CHANGE, base + MIPHY_PLL_SBR_1);
+
+ /* TX compensation offset to re-center TX impedance */
+ writeb_relaxed(0x00, base + MIPHY_COMP_POSTP);
+
+ if (miphy_phy->type == PHY_TYPE_PCIE)
+ return miphy28lp_wait_compensation(miphy_phy);
+
+ return 0;
+}
+
+static inline void miphy28_usb3_miphy_reset(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ u8 val;
+
+ /* MIPHY Reset */
+ writeb_relaxed(RST_APPLI_SW, base + MIPHY_CONF_RESET);
+ writeb_relaxed(0x00, base + MIPHY_CONF_RESET);
+ writeb_relaxed(RST_COMP_SW, base + MIPHY_RESET);
+
+ val = RST_COMP_SW | RST_PLL_SW;
+ writeb_relaxed(val, base + MIPHY_RESET);
+
+ writeb_relaxed(0x00, base + MIPHY_PLL_COMMON_MISC_2);
+ writeb_relaxed(0x1e, base + MIPHY_PLL_CLKREF_FREQ);
+ writeb_relaxed(COMP_START, base + MIPHY_COMP_FSM_1);
+ writeb_relaxed(RST_PLL_SW, base + MIPHY_RESET);
+ writeb_relaxed(0x00, base + MIPHY_RESET);
+ writeb_relaxed(START_ACT_FILT, base + MIPHY_PLL_COMMON_MISC_2);
+ writeb_relaxed(0x00, base + MIPHY_CONF);
+ writeb_relaxed(0x00, base + MIPHY_BOUNDARY_1);
+ writeb_relaxed(0x00, base + MIPHY_TST_BIAS_BOOST_2);
+ writeb_relaxed(0x00, base + MIPHY_CONF);
+ writeb_relaxed(SET_NEW_CHANGE, base + MIPHY_PLL_SBR_1);
+ writeb_relaxed(0xa5, base + MIPHY_DEBUG_BUS);
+ writeb_relaxed(0x00, base + MIPHY_CONF);
+}
+
+static void miphy_sata_tune_ssc(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ u8 val;
+
+ /* Compensate Tx impedance to avoid out of range values */
+ /*
+ * Enable the SSC on PLL for all banks
+ * SSC Modulation @ 31 KHz and 4000 ppm modulation amp
+ */
+ val = readb_relaxed(base + MIPHY_BOUNDARY_2);
+ val |= SSC_EN_SW;
+ writeb_relaxed(val, base + MIPHY_BOUNDARY_2);
+
+ val = readb_relaxed(base + MIPHY_BOUNDARY_SEL);
+ val |= SSC_SEL;
+ writeb_relaxed(val, base + MIPHY_BOUNDARY_SEL);
+
+ for (val = 0; val < MIPHY_SATA_BANK_NB; val++) {
+ writeb_relaxed(val, base + MIPHY_CONF);
+
+ /* Add value to each reference clock cycle */
+ /* and define the period length of the SSC */
+ writeb_relaxed(0x3c, base + MIPHY_PLL_SBR_2);
+ writeb_relaxed(0x6c, base + MIPHY_PLL_SBR_3);
+ writeb_relaxed(0x81, base + MIPHY_PLL_SBR_4);
+
+ /* Clear any previous request */
+ writeb_relaxed(0x00, base + MIPHY_PLL_SBR_1);
+
+ /* requests the PLL to take in account new parameters */
+ writeb_relaxed(SET_NEW_CHANGE, base + MIPHY_PLL_SBR_1);
+
+ /* To be sure there is no other pending requests */
+ writeb_relaxed(0x00, base + MIPHY_PLL_SBR_1);
+ }
+}
+
+static void miphy_pcie_tune_ssc(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ u8 val;
+
+ /* Compensate Tx impedance to avoid out of range values */
+ /*
+ * Enable the SSC on PLL for all banks
+ * SSC Modulation @ 31 KHz and 4000 ppm modulation amp
+ */
+ val = readb_relaxed(base + MIPHY_BOUNDARY_2);
+ val |= SSC_EN_SW;
+ writeb_relaxed(val, base + MIPHY_BOUNDARY_2);
+
+ val = readb_relaxed(base + MIPHY_BOUNDARY_SEL);
+ val |= SSC_SEL;
+ writeb_relaxed(val, base + MIPHY_BOUNDARY_SEL);
+
+ for (val = 0; val < MIPHY_PCIE_BANK_NB; val++) {
+ writeb_relaxed(val, base + MIPHY_CONF);
+
+ /* Validate Step component */
+ writeb_relaxed(0x69, base + MIPHY_PLL_SBR_3);
+ writeb_relaxed(0x21, base + MIPHY_PLL_SBR_4);
+
+ /* Validate Period component */
+ writeb_relaxed(0x3c, base + MIPHY_PLL_SBR_2);
+ writeb_relaxed(0x21, base + MIPHY_PLL_SBR_4);
+
+ /* Clear any previous request */
+ writeb_relaxed(0x00, base + MIPHY_PLL_SBR_1);
+
+ /* requests the PLL to take in account new parameters */
+ writeb_relaxed(SET_NEW_CHANGE, base + MIPHY_PLL_SBR_1);
+
+ /* To be sure there is no other pending requests */
+ writeb_relaxed(0x00, base + MIPHY_PLL_SBR_1);
+ }
+}
+
+static inline void miphy_tune_tx_impedance(struct miphy28lp_phy *miphy_phy)
+{
+ /* Compensate Tx impedance to avoid out of range values */
+ writeb_relaxed(0x02, miphy_phy->base + MIPHY_COMP_POSTP);
+}
+
+static inline int miphy28lp_configure_sata(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ int err;
+ u8 val;
+
+ /* Putting Macro in reset */
+ miphy28lp_set_reset(miphy_phy);
+
+ /* PLL calibration */
+ miphy28lp_pll_calibration(miphy_phy, &sata_pll_ratio);
+
+ /* Banked settings Gen1/Gen2/Gen3 */
+ miphy28lp_sata_config_gen(miphy_phy);
+
+ /* Power control */
+ /* Input bridge enable, manual input bridge control */
+ writeb_relaxed(0x21, base + MIPHY_RX_POWER_CTRL_1);
+
+ /* Macro out of reset */
+ writeb_relaxed(0x00, base + MIPHY_CONF_RESET);
+
+ /* Poll for HFC ready after reset release */
+ /* Compensation measurement */
+ err = miphy28lp_compensation(miphy_phy, &sata_pll_ratio);
+ if (err)
+ return err;
+
+ if (miphy_phy->px_rx_pol_inv) {
+ /* Invert Rx polarity */
+ val = readb_relaxed(miphy_phy->base + MIPHY_CONTROL);
+ val |= PX_RX_POL;
+ writeb_relaxed(val, miphy_phy->base + MIPHY_CONTROL);
+ }
+
+ if (miphy_phy->ssc)
+ miphy_sata_tune_ssc(miphy_phy);
+
+ if (miphy_phy->tx_impedance)
+ miphy_tune_tx_impedance(miphy_phy);
+
+ return 0;
+}
+
+static inline int miphy28lp_configure_pcie(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ int err;
+
+ /* Putting Macro in reset */
+ miphy28lp_set_reset(miphy_phy);
+
+ /* PLL calibration */
+ miphy28lp_pll_calibration(miphy_phy, &pcie_pll_ratio);
+
+ /* Banked settings Gen1/Gen2 */
+ miphy28lp_pcie_config_gen(miphy_phy);
+
+ /* Power control */
+ /* Input bridge enable, manual input bridge control */
+ writeb_relaxed(0x21, base + MIPHY_RX_POWER_CTRL_1);
+
+ /* Macro out of reset */
+ writeb_relaxed(0x00, base + MIPHY_CONF_RESET);
+
+ /* Poll for HFC ready after reset release */
+ /* Compensation measurement */
+ err = miphy28lp_compensation(miphy_phy, &pcie_pll_ratio);
+ if (err)
+ return err;
+
+ if (miphy_phy->ssc)
+ miphy_pcie_tune_ssc(miphy_phy);
+
+ if (miphy_phy->tx_impedance)
+ miphy_tune_tx_impedance(miphy_phy);
+
+ return 0;
+}
+
+
+static inline void miphy28lp_configure_usb3(struct miphy28lp_phy *miphy_phy)
+{
+ void __iomem *base = miphy_phy->base;
+ u8 val;
+
+ /* Putting Macro in reset */
+ miphy28lp_set_reset(miphy_phy);
+
+ /* PLL calibration */
+ miphy28lp_pll_calibration(miphy_phy, &usb3_pll_ratio);
+
+ /* Writing The Speed Rate */
+ writeb_relaxed(0x00, base + MIPHY_CONF);
+
+ val = RX_SPDSEL_20DEC | TX_SPDSEL_20DEC;
+ writeb_relaxed(val, base + MIPHY_SPEED);
+
+ /* RX Channel compensation and calibration */
+ writeb_relaxed(0x1c, base + MIPHY_RX_LOCK_SETTINGS_OPT);
+ writeb_relaxed(0x51, base + MIPHY_RX_CAL_CTRL_1);
+ writeb_relaxed(0x70, base + MIPHY_RX_CAL_CTRL_2);
+
+ val = OFFSET_COMPENSATION_EN | VGA_OFFSET_POLARITY |
+ CAL_OFFSET_THRESHOLD_64 | CAL_OFFSET_VGA_64;
+ writeb_relaxed(val, base + MIPHY_RX_CAL_OFFSET_CTRL);
+ writeb_relaxed(0x22, base + MIPHY_RX_CAL_VGA_STEP);
+ writeb_relaxed(0x0e, base + MIPHY_RX_CAL_OPT_LENGTH);
+
+ val = EQ_DC_GAIN | VGA_GAIN;
+ writeb_relaxed(val, base + MIPHY_RX_BUFFER_CTRL);
+ writeb_relaxed(0x78, base + MIPHY_RX_EQU_GAIN_1);
+ writeb_relaxed(0x1b, base + MIPHY_SYNCHAR_CONTROL);
+
+ /* TX compensation offset to re-center TX impedance */
+ writeb_relaxed(0x02, base + MIPHY_COMP_POSTP);
+
+ /* Enable GENSEL_SEL and SSC */
+ /* TX_SEL=0 swing preemp forced by pipe registres */
+ val = SSC_SEL | GENSEL_SEL;
+ writeb_relaxed(val, base + MIPHY_BOUNDARY_SEL);
+
+ /* MIPHY Bias boost */
+ writeb_relaxed(0x00, base + MIPHY_BIAS_BOOST_1);
+ writeb_relaxed(0xa7, base + MIPHY_BIAS_BOOST_2);
+
+ /* SSC modulation */
+ writeb_relaxed(SSC_EN_SW, base + MIPHY_BOUNDARY_2);
+
+ /* MIPHY TX control */
+ writeb_relaxed(0x00, base + MIPHY_CONF);
+
+ /* Validate Step component */
+ writeb_relaxed(0x5a, base + MIPHY_PLL_SBR_3);
+ writeb_relaxed(0xa0, base + MIPHY_PLL_SBR_4);
+
+ /* Validate Period component */
+ writeb_relaxed(0x3c, base + MIPHY_PLL_SBR_2);
+ writeb_relaxed(0xa1, base + MIPHY_PLL_SBR_4);
+
+ /* Clear any previous request */
+ writeb_relaxed(0x00, base + MIPHY_PLL_SBR_1);
+
+ /* requests the PLL to take in account new parameters */
+ writeb_relaxed(0x02, base + MIPHY_PLL_SBR_1);
+
+ /* To be sure there is no other pending requests */
+ writeb_relaxed(0x00, base + MIPHY_PLL_SBR_1);
+
+ /* Rx PI controller settings */
+ writeb_relaxed(0xca, base + MIPHY_RX_K_GAIN);
+
+ /* MIPHY RX input bridge control */
+ /* INPUT_BRIDGE_EN_SW=1, manual input bridge control[0]=1 */
+ writeb_relaxed(0x21, base + MIPHY_RX_POWER_CTRL_1);
+ writeb_relaxed(0x29, base + MIPHY_RX_POWER_CTRL_1);
+ writeb_relaxed(0x1a, base + MIPHY_RX_POWER_CTRL_2);
+
+ /* MIPHY Reset for usb3 */
+ miphy28_usb3_miphy_reset(miphy_phy);
+}
+
+static inline int miphy_is_ready(struct miphy28lp_phy *miphy_phy)
+{
+ unsigned long finish = jiffies + 5 * HZ;
+ u8 mask = HFC_PLL | HFC_RDY;
+ u8 val;
+
+ /*
+ * For PCIe and USB3 check only that PLL and HFC are ready
+ * For SATA check also that phy is ready!
+ */
+ if (miphy_phy->type == PHY_TYPE_SATA)
+ mask |= PHY_RDY;
+
+ do {
+ val = readb_relaxed(miphy_phy->base + MIPHY_STATUS_1);
+ if ((val & mask) != mask)
+ cpu_relax();
+ else
+ return 0;
+ } while (!time_after_eq(jiffies, finish));
+
+ return -EBUSY;
+}
+
+static int miphy_osc_is_ready(struct miphy28lp_phy *miphy_phy)
+{
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ unsigned long finish = jiffies + 5 * HZ;
+ u32 val;
+
+ if (!miphy_phy->osc_rdy)
+ return 0;
+
+ if (!miphy_phy->syscfg_miphy_status)
+ return -EINVAL;
+
+ do {
+ regmap_read(miphy_dev->regmap, miphy_phy->syscfg_miphy_status,
+ &val);
+
+ if ((val & MIPHY_OSC_RDY) != MIPHY_OSC_RDY)
+ cpu_relax();
+ else
+ return 0;
+ } while (!time_after_eq(jiffies, finish));
+
+ return -EBUSY;
+}
+
+static int miphy28lp_get_resource_byname(struct device_node *child,
+ char *rname, struct resource *res)
+{
+ int index;
+
+ index = of_property_match_string(child, "reg-names", rname);
+ if (index < 0)
+ return -ENODEV;
+
+ return of_address_to_resource(child, index, res);
+}
+
+static int miphy28lp_get_one_addr(struct device *dev,
+ struct device_node *child, char *rname,
+ void __iomem **base)
+{
+ struct resource res;
+ int ret;
+
+ ret = miphy28lp_get_resource_byname(child, rname, &res);
+ if (!ret) {
+ *base = devm_ioremap(dev, res.start, resource_size(&res));
+ if (!*base) {
+ dev_err(dev, "failed to ioremap %s address region\n"
+ , rname);
+ return -ENOENT;
+ }
+ }
+
+ return 0;
+}
+
+/* MiPHY reset and sysconf setup */
+static int miphy28lp_setup(struct miphy28lp_phy *miphy_phy, u32 miphy_val)
+{
+ int err;
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+
+ if (!miphy_phy->syscfg_miphy_ctrl)
+ return -EINVAL;
+
+ err = reset_control_assert(miphy_phy->miphy_rst);
+ if (err) {
+ dev_err(miphy_dev->dev, "unable to bring out of miphy reset\n");
+ return err;
+ }
+
+ if (miphy_phy->osc_force_ext)
+ miphy_val |= MIPHY_OSC_FORCE_EXT;
+
+ regmap_update_bits(miphy_dev->regmap, miphy_phy->syscfg_miphy_ctrl,
+ MIPHY_CTRL_MASK, miphy_val);
+
+ err = reset_control_deassert(miphy_phy->miphy_rst);
+ if (err) {
+ dev_err(miphy_dev->dev, "unable to bring out of miphy reset\n");
+ return err;
+ }
+
+ return miphy_osc_is_ready(miphy_phy);
+}
+
+static int miphy28lp_init_sata(struct miphy28lp_phy *miphy_phy)
+{
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ int err, sata_conf = SATA_CTRL_SELECT_SATA;
+
+ if ((!miphy_phy->syscfg_sata) || (!miphy_phy->syscfg_pci)
+ || (!miphy_phy->base))
+ return -EINVAL;
+
+ dev_info(miphy_dev->dev, "sata-up mode, addr 0x%p\n", miphy_phy->base);
+
+ /* Configure the glue-logic */
+ sata_conf |= ((miphy_phy->sata_gen - SATA_GEN1) << SATA_SPDMODE);
+
+ regmap_update_bits(miphy_dev->regmap, miphy_phy->syscfg_sata,
+ SATA_CTRL_MASK, sata_conf);
+
+ regmap_update_bits(miphy_dev->regmap, miphy_phy->syscfg_pci,
+ PCIE_CTRL_MASK, SATA_CTRL_SELECT_PCIE);
+
+ /* MiPHY path and clocking init */
+ err = miphy28lp_setup(miphy_phy, MIPHY_CTRL_DEFAULT);
+
+ if (err) {
+ dev_err(miphy_dev->dev, "SATA phy setup failed\n");
+ return err;
+ }
+
+ /* initialize miphy */
+ miphy28lp_configure_sata(miphy_phy);
+
+ return miphy_is_ready(miphy_phy);
+}
+
+static int miphy28lp_init_pcie(struct miphy28lp_phy *miphy_phy)
+{
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ int err;
+
+ if ((!miphy_phy->syscfg_sata) || (!miphy_phy->syscfg_pci)
+ || (!miphy_phy->base) || (!miphy_phy->pipebase))
+ return -EINVAL;
+
+ dev_info(miphy_dev->dev, "pcie-up mode, addr 0x%p\n", miphy_phy->base);
+
+ /* Configure the glue-logic */
+ regmap_update_bits(miphy_dev->regmap, miphy_phy->syscfg_sata,
+ SATA_CTRL_MASK, SATA_CTRL_SELECT_PCIE);
+
+ regmap_update_bits(miphy_dev->regmap, miphy_phy->syscfg_pci,
+ PCIE_CTRL_MASK, SYSCFG_PCIE_PCIE_VAL);
+
+ /* MiPHY path and clocking init */
+ err = miphy28lp_setup(miphy_phy, MIPHY_CTRL_DEFAULT);
+
+ if (err) {
+ dev_err(miphy_dev->dev, "PCIe phy setup failed\n");
+ return err;
+ }
+
+ /* initialize miphy */
+ err = miphy28lp_configure_pcie(miphy_phy);
+ if (err)
+ return err;
+
+ /* PIPE Wrapper Configuration */
+ writeb_relaxed(0x68, miphy_phy->pipebase + 0x104); /* Rise_0 */
+ writeb_relaxed(0x61, miphy_phy->pipebase + 0x105); /* Rise_1 */
+ writeb_relaxed(0x68, miphy_phy->pipebase + 0x108); /* Fall_0 */
+ writeb_relaxed(0x61, miphy_phy->pipebase + 0x109); /* Fall-1 */
+ writeb_relaxed(0x68, miphy_phy->pipebase + 0x10c); /* Threshold_0 */
+ writeb_relaxed(0x60, miphy_phy->pipebase + 0x10d); /* Threshold_1 */
+
+ /* Wait for phy_ready */
+ return miphy_is_ready(miphy_phy);
+}
+
+static int miphy28lp_init_usb3(struct miphy28lp_phy *miphy_phy)
+{
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ int err;
+
+ if ((!miphy_phy->base) || (!miphy_phy->pipebase))
+ return -EINVAL;
+
+ dev_info(miphy_dev->dev, "usb3-up mode, addr 0x%p\n", miphy_phy->base);
+
+ /* MiPHY path and clocking init */
+ err = miphy28lp_setup(miphy_phy, MIPHY_CTRL_SYNC_D_EN);
+ if (err) {
+ dev_err(miphy_dev->dev, "USB3 phy setup failed\n");
+ return err;
+ }
+
+ /* initialize miphy */
+ miphy28lp_configure_usb3(miphy_phy);
+
+ /* PIPE Wrapper Configuration */
+ writeb_relaxed(0x68, miphy_phy->pipebase + 0x23);
+ writeb_relaxed(0x61, miphy_phy->pipebase + 0x24);
+ writeb_relaxed(0x68, miphy_phy->pipebase + 0x26);
+ writeb_relaxed(0x61, miphy_phy->pipebase + 0x27);
+ writeb_relaxed(0x18, miphy_phy->pipebase + 0x29);
+ writeb_relaxed(0x61, miphy_phy->pipebase + 0x2a);
+
+ /* pipe Wrapper usb3 TX swing de-emph margin PREEMPH[7:4], SWING[3:0] */
+ writeb_relaxed(0X67, miphy_phy->pipebase + 0x68);
+ writeb_relaxed(0x0d, miphy_phy->pipebase + 0x69);
+ writeb_relaxed(0X67, miphy_phy->pipebase + 0x6a);
+ writeb_relaxed(0X0d, miphy_phy->pipebase + 0x6b);
+ writeb_relaxed(0X67, miphy_phy->pipebase + 0x6c);
+ writeb_relaxed(0X0d, miphy_phy->pipebase + 0x6d);
+ writeb_relaxed(0X67, miphy_phy->pipebase + 0x6e);
+ writeb_relaxed(0X0d, miphy_phy->pipebase + 0x6f);
+
+ return miphy_is_ready(miphy_phy);
+}
+
+static int miphy28lp_init(struct phy *phy)
+{
+ struct miphy28lp_phy *miphy_phy = phy_get_drvdata(phy);
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ int ret;
+
+ mutex_lock(&miphy_dev->miphy_mutex);
+
+ switch (miphy_phy->type) {
+
+ case PHY_TYPE_SATA:
+ ret = miphy28lp_init_sata(miphy_phy);
+ break;
+ case PHY_TYPE_PCIE:
+ ret = miphy28lp_init_pcie(miphy_phy);
+ break;
+ case PHY_TYPE_USB3:
+ ret = miphy28lp_init_usb3(miphy_phy);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_unlock(&miphy_dev->miphy_mutex);
+
+ return ret;
+}
+
+static int miphy28lp_get_addr(struct miphy28lp_phy *miphy_phy)
+{
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ struct device_node *phynode = miphy_phy->phy->dev.of_node;
+ int err;
+
+ if ((miphy_phy->type != PHY_TYPE_SATA) &&
+ (miphy_phy->type != PHY_TYPE_PCIE) &&
+ (miphy_phy->type != PHY_TYPE_USB3)) {
+ return -EINVAL;
+ }
+
+ err = miphy28lp_get_one_addr(miphy_dev->dev, phynode,
+ PHY_TYPE_name[miphy_phy->type - PHY_TYPE_SATA],
+ &miphy_phy->base);
+ if (err)
+ return err;
+
+ if ((miphy_phy->type == PHY_TYPE_PCIE) ||
+ (miphy_phy->type == PHY_TYPE_USB3)) {
+ err = miphy28lp_get_one_addr(miphy_dev->dev, phynode, "pipew",
+ &miphy_phy->pipebase);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static struct phy *miphy28lp_xlate(struct device *dev,
+ struct of_phandle_args *args)
+{
+ struct miphy28lp_dev *miphy_dev = dev_get_drvdata(dev);
+ struct miphy28lp_phy *miphy_phy = NULL;
+ struct device_node *phynode = args->np;
+ int ret, index = 0;
+
+ if (!of_device_is_available(phynode)) {
+ dev_warn(dev, "Requested PHY is disabled\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ if (args->args_count != 1) {
+ dev_err(dev, "Invalid number of cells in 'phy' property\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ for (index = 0; index < of_get_child_count(dev->of_node); index++)
+ if (phynode == miphy_dev->phys[index]->phy->dev.of_node) {
+ miphy_phy = miphy_dev->phys[index];
+ break;
+ }
+
+ if (!miphy_phy) {
+ dev_err(dev, "Failed to find appropriate phy\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ miphy_phy->type = args->args[0];
+
+ ret = miphy28lp_get_addr(miphy_phy);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ return miphy_phy->phy;
+}
+
+static struct phy_ops miphy28lp_ops = {
+ .init = miphy28lp_init,
+};
+
+static int miphy28lp_probe_resets(struct device_node *node,
+ struct miphy28lp_phy *miphy_phy)
+{
+ struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
+ int err;
+
+ miphy_phy->miphy_rst = of_reset_control_get(node, "miphy-sw-rst");
+
+ if (IS_ERR(miphy_phy->miphy_rst)) {
+ dev_err(miphy_dev->dev,
+ "miphy soft reset control not defined\n");
+ return PTR_ERR(miphy_phy->miphy_rst);
+ }
+
+ err = reset_control_deassert(miphy_phy->miphy_rst);
+ if (err) {
+ dev_err(miphy_dev->dev, "unable to bring out of miphy reset\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int miphy28lp_of_probe(struct device_node *np,
+ struct miphy28lp_phy *miphy_phy)
+{
+ struct resource res;
+
+ miphy_phy->osc_force_ext =
+ of_property_read_bool(np, "st,osc-force-ext");
+
+ miphy_phy->osc_rdy = of_property_read_bool(np, "st,osc-rdy");
+
+ miphy_phy->px_rx_pol_inv =
+ of_property_read_bool(np, "st,px_rx_pol_inv");
+
+ miphy_phy->ssc = of_property_read_bool(np, "st,ssc-on");
+
+ miphy_phy->tx_impedance =
+ of_property_read_bool(np, "st,tx-impedance-comp");
+
+ of_property_read_u32(np, "st,sata-gen", &miphy_phy->sata_gen);
+ if (!miphy_phy->sata_gen)
+ miphy_phy->sata_gen = SATA_GEN1;
+
+ if (!miphy28lp_get_resource_byname(np, "miphy-ctrl-glue", &res))
+ miphy_phy->syscfg_miphy_ctrl = res.start;
+
+ if (!miphy28lp_get_resource_byname(np, "miphy-status-glue", &res))
+ miphy_phy->syscfg_miphy_status = res.start;
+
+ if (!miphy28lp_get_resource_byname(np, "pcie-glue", &res))
+ miphy_phy->syscfg_pci = res.start;
+
+ if (!miphy28lp_get_resource_byname(np, "sata-glue", &res))
+ miphy_phy->syscfg_sata = res.start;
+
+
+ return 0;
+}
+
+static int miphy28lp_probe(struct platform_device *pdev)
+{
+ struct device_node *child, *np = pdev->dev.of_node;
+ struct miphy28lp_dev *miphy_dev;
+ struct phy_provider *provider;
+ struct phy *phy;
+ int chancount, port = 0;
+ int ret;
+
+ miphy_dev = devm_kzalloc(&pdev->dev, sizeof(*miphy_dev), GFP_KERNEL);
+ if (!miphy_dev)
+ return -ENOMEM;
+
+ chancount = of_get_child_count(np);
+ miphy_dev->phys = devm_kzalloc(&pdev->dev, sizeof(phy) * chancount,
+ GFP_KERNEL);
+ if (!miphy_dev->phys)
+ return -ENOMEM;
+
+ miphy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+ if (IS_ERR(miphy_dev->regmap)) {
+ dev_err(miphy_dev->dev, "No syscfg phandle specified\n");
+ return PTR_ERR(miphy_dev->regmap);
+ }
+
+ miphy_dev->dev = &pdev->dev;
+
+ dev_set_drvdata(&pdev->dev, miphy_dev);
+
+ mutex_init(&miphy_dev->miphy_mutex);
+
+ for_each_child_of_node(np, child) {
+ struct miphy28lp_phy *miphy_phy;
+
+ miphy_phy = devm_kzalloc(&pdev->dev, sizeof(*miphy_phy),
+ GFP_KERNEL);
+ if (!miphy_phy)
+ return -ENOMEM;
+
+ miphy_dev->phys[port] = miphy_phy;
+
+ phy = devm_phy_create(&pdev->dev, child, &miphy28lp_ops);
+ if (IS_ERR(phy)) {
+ dev_err(&pdev->dev, "failed to create PHY\n");
+ return PTR_ERR(phy);
+ }
+
+ miphy_dev->phys[port]->phy = phy;
+ miphy_dev->phys[port]->phydev = miphy_dev;
+
+ ret = miphy28lp_of_probe(child, miphy_phy);
+ if (ret)
+ return ret;
+
+ ret = miphy28lp_probe_resets(child, miphy_dev->phys[port]);
+ if (ret)
+ return ret;
+
+ phy_set_drvdata(phy, miphy_dev->phys[port]);
+ port++;
+
+ }
+
+ provider = devm_of_phy_provider_register(&pdev->dev, miphy28lp_xlate);
+ if (IS_ERR(provider))
+ return PTR_ERR(provider);
+
+ return 0;
+}
+
+static const struct of_device_id miphy28lp_of_match[] = {
+ {.compatible = "st,miphy28lp-phy", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, miphy28lp_of_match);
+
+static struct platform_driver miphy28lp_driver = {
+ .probe = miphy28lp_probe,
+ .driver = {
+ .name = "miphy28lp-phy",
+ .owner = THIS_MODULE,
+ .of_match_table = miphy28lp_of_match,
+ }
+};
+
+module_platform_driver(miphy28lp_driver);
+
+MODULE_AUTHOR("Alexandre Torgue <alexandre.torgue@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics miphy28lp driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
index 801afaf2d449..6ab43a814ad2 100644
--- a/drivers/phy/phy-miphy365x.c
+++ b/drivers/phy/phy-miphy365x.c
@@ -593,7 +593,7 @@ static int miphy365x_probe(struct platform_device *pdev)
miphy_dev->phys[port] = miphy_phy;
- phy = devm_phy_create(&pdev->dev, child, &miphy365x_ops, NULL);
+ phy = devm_phy_create(&pdev->dev, child, &miphy365x_ops);
if (IS_ERR(phy)) {
dev_err(&pdev->dev, "failed to create PHY\n");
return PTR_ERR(phy);
@@ -610,10 +610,7 @@ static int miphy365x_probe(struct platform_device *pdev)
}
provider = devm_of_phy_provider_register(&pdev->dev, miphy365x_xlate);
- if (IS_ERR(provider))
- return PTR_ERR(provider);
-
- return 0;
+ return PTR_ERR_OR_ZERO(provider);
}
static const struct of_device_id miphy365x_of_match[] = {
diff --git a/drivers/phy/phy-mvebu-sata.c b/drivers/phy/phy-mvebu-sata.c
index d395558cb12e..03b94f92e6f1 100644
--- a/drivers/phy/phy-mvebu-sata.c
+++ b/drivers/phy/phy-mvebu-sata.c
@@ -101,7 +101,7 @@ static int phy_mvebu_sata_probe(struct platform_device *pdev)
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
- phy = devm_phy_create(&pdev->dev, NULL, &phy_mvebu_sata_ops, NULL);
+ phy = devm_phy_create(&pdev->dev, NULL, &phy_mvebu_sata_ops);
if (IS_ERR(phy))
return PTR_ERR(phy);
diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
index f091576b6449..4e489a8850e5 100644
--- a/drivers/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -60,7 +60,7 @@ EXPORT_SYMBOL_GPL(omap_usb2_set_comparator);
static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled)
{
- struct omap_usb *phy = phy_to_omapusb(otg->phy);
+ struct omap_usb *phy = phy_to_omapusb(otg->usb_phy);
if (!phy->comparator)
return -ENODEV;
@@ -70,7 +70,7 @@ static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled)
static int omap_usb_start_srp(struct usb_otg *otg)
{
- struct omap_usb *phy = phy_to_omapusb(otg->phy);
+ struct omap_usb *phy = phy_to_omapusb(otg->usb_phy);
if (!phy->comparator)
return -ENODEV;
@@ -80,11 +80,9 @@ static int omap_usb_start_srp(struct usb_otg *otg)
static int omap_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
{
- struct usb_phy *phy = otg->phy;
-
otg->host = host;
if (!host)
- phy->state = OTG_STATE_UNDEFINED;
+ otg->state = OTG_STATE_UNDEFINED;
return 0;
}
@@ -92,11 +90,9 @@ static int omap_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
static int omap_usb_set_peripheral(struct usb_otg *otg,
struct usb_gadget *gadget)
{
- struct usb_phy *phy = otg->phy;
-
otg->gadget = gadget;
if (!gadget)
- phy->state = OTG_STATE_UNDEFINED;
+ otg->state = OTG_STATE_UNDEFINED;
return 0;
}
@@ -255,12 +251,12 @@ static int omap_usb2_probe(struct platform_device *pdev)
otg->set_vbus = omap_usb_set_vbus;
if (phy_data->flags & OMAP_USB2_HAS_START_SRP)
otg->start_srp = omap_usb_start_srp;
- otg->phy = &phy->phy;
+ otg->usb_phy = &phy->phy;
platform_set_drvdata(pdev, phy);
pm_runtime_enable(phy->dev);
- generic_phy = devm_phy_create(phy->dev, NULL, &ops, NULL);
+ generic_phy = devm_phy_create(phy->dev, NULL, &ops);
if (IS_ERR(generic_phy)) {
pm_runtime_disable(phy->dev);
return PTR_ERR(generic_phy);
diff --git a/drivers/phy/phy-qcom-apq8064-sata.c b/drivers/phy/phy-qcom-apq8064-sata.c
index 7b3ddfb65898..4b243f7a10e4 100644
--- a/drivers/phy/phy-qcom-apq8064-sata.c
+++ b/drivers/phy/phy-qcom-apq8064-sata.c
@@ -228,8 +228,7 @@ static int qcom_apq8064_sata_phy_probe(struct platform_device *pdev)
if (IS_ERR(phy->mmio))
return PTR_ERR(phy->mmio);
- generic_phy = devm_phy_create(dev, NULL, &qcom_apq8064_sata_phy_ops,
- NULL);
+ generic_phy = devm_phy_create(dev, NULL, &qcom_apq8064_sata_phy_ops);
if (IS_ERR(generic_phy)) {
dev_err(dev, "%s: failed to create phy\n", __func__);
return PTR_ERR(generic_phy);
diff --git a/drivers/phy/phy-qcom-ipq806x-sata.c b/drivers/phy/phy-qcom-ipq806x-sata.c
index 759b0bf5b6b3..6f2fe2627916 100644
--- a/drivers/phy/phy-qcom-ipq806x-sata.c
+++ b/drivers/phy/phy-qcom-ipq806x-sata.c
@@ -150,8 +150,7 @@ static int qcom_ipq806x_sata_phy_probe(struct platform_device *pdev)
if (IS_ERR(phy->mmio))
return PTR_ERR(phy->mmio);
- generic_phy = devm_phy_create(dev, NULL, &qcom_ipq806x_sata_phy_ops,
- NULL);
+ generic_phy = devm_phy_create(dev, NULL, &qcom_ipq806x_sata_phy_ops);
if (IS_ERR(generic_phy)) {
dev_err(dev, "%s: failed to create phy\n", __func__);
return PTR_ERR(generic_phy);
diff --git a/drivers/phy/phy-rcar-gen2.c b/drivers/phy/phy-rcar-gen2.c
index 2793af17799f..778276aba3aa 100644
--- a/drivers/phy/phy-rcar-gen2.c
+++ b/drivers/phy/phy-rcar-gen2.c
@@ -304,7 +304,7 @@ static int rcar_gen2_phy_probe(struct platform_device *pdev)
phy->select_value = select_value[channel_num][n];
phy->phy = devm_phy_create(dev, NULL,
- &rcar_gen2_phy_ops, NULL);
+ &rcar_gen2_phy_ops);
if (IS_ERR(phy->phy)) {
dev_err(dev, "Failed to create PHY\n");
return PTR_ERR(phy->phy);
diff --git a/drivers/phy/phy-samsung-usb2.c b/drivers/phy/phy-samsung-usb2.c
index 908949dfb4db..4a12f66b7fb5 100644
--- a/drivers/phy/phy-samsung-usb2.c
+++ b/drivers/phy/phy-samsung-usb2.c
@@ -202,8 +202,7 @@ static int samsung_usb2_phy_probe(struct platform_device *pdev)
struct samsung_usb2_phy_instance *p = &drv->instances[i];
dev_dbg(dev, "Creating phy \"%s\"\n", label);
- p->phy = devm_phy_create(dev, NULL, &samsung_usb2_phy_ops,
- NULL);
+ p->phy = devm_phy_create(dev, NULL, &samsung_usb2_phy_ops);
if (IS_ERR(p->phy)) {
dev_err(drv->dev, "Failed to create usb2_phy \"%s\"\n",
label);
diff --git a/drivers/phy/phy-spear1310-miphy.c b/drivers/phy/phy-spear1310-miphy.c
index 5f4c586ee951..9f47fae7eecb 100644
--- a/drivers/phy/phy-spear1310-miphy.c
+++ b/drivers/phy/phy-spear1310-miphy.c
@@ -227,7 +227,7 @@ static int spear1310_miphy_probe(struct platform_device *pdev)
return -EINVAL;
}
- priv->phy = devm_phy_create(dev, NULL, &spear1310_miphy_ops, NULL);
+ priv->phy = devm_phy_create(dev, NULL, &spear1310_miphy_ops);
if (IS_ERR(priv->phy)) {
dev_err(dev, "failed to create SATA PCIe PHY\n");
return PTR_ERR(priv->phy);
diff --git a/drivers/phy/phy-spear1340-miphy.c b/drivers/phy/phy-spear1340-miphy.c
index 1ecd0945bad3..e42bc200275f 100644
--- a/drivers/phy/phy-spear1340-miphy.c
+++ b/drivers/phy/phy-spear1340-miphy.c
@@ -259,7 +259,7 @@ static int spear1340_miphy_probe(struct platform_device *pdev)
return PTR_ERR(priv->misc);
}
- priv->phy = devm_phy_create(dev, NULL, &spear1340_miphy_ops, NULL);
+ priv->phy = devm_phy_create(dev, NULL, &spear1340_miphy_ops);
if (IS_ERR(priv->phy)) {
dev_err(dev, "failed to create SATA PCIe PHY\n");
return PTR_ERR(priv->phy);
diff --git a/drivers/phy/phy-stih407-usb.c b/drivers/phy/phy-stih407-usb.c
index 42428d4181ea..74f0fab3cd8a 100644
--- a/drivers/phy/phy-stih407-usb.c
+++ b/drivers/phy/phy-stih407-usb.c
@@ -137,7 +137,7 @@ static int stih407_usb2_picophy_probe(struct platform_device *pdev)
}
phy_dev->param = res->start;
- phy = devm_phy_create(dev, NULL, &stih407_usb2_picophy_data, NULL);
+ phy = devm_phy_create(dev, NULL, &stih407_usb2_picophy_data);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create Display Port PHY\n");
return PTR_ERR(phy);
diff --git a/drivers/phy/phy-stih41x-usb.c b/drivers/phy/phy-stih41x-usb.c
index 9f16cb8e01f4..a603801293ff 100644
--- a/drivers/phy/phy-stih41x-usb.c
+++ b/drivers/phy/phy-stih41x-usb.c
@@ -148,7 +148,7 @@ static int stih41x_usb_phy_probe(struct platform_device *pdev)
return PTR_ERR(phy_dev->clk);
}
- phy = devm_phy_create(dev, NULL, &stih41x_usb_phy_ops, NULL);
+ phy = devm_phy_create(dev, NULL, &stih41x_usb_phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create phy\n");
@@ -160,10 +160,7 @@ static int stih41x_usb_phy_probe(struct platform_device *pdev)
phy_set_drvdata(phy, phy_dev);
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
- if (IS_ERR(phy_provider))
- return PTR_ERR(phy_provider);
-
- return 0;
+ return PTR_ERR_OR_ZERO(phy_provider);
}
static const struct of_device_id stih41x_usb_phy_of_match[] = {
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index 0baf5efc8a40..fb02a67c9181 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -157,6 +157,10 @@ static int sun4i_usb_phy_init(struct phy *_phy)
return ret;
}
+ /* Enable USB 45 Ohm resistor calibration */
+ if (phy->index == 0)
+ sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
+
/* Adjust PHY's magnitude and rate */
sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
@@ -213,7 +217,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
{
struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
- if (WARN_ON(args->args[0] == 0 || args->args[0] >= data->num_phys))
+ if (args->args[0] >= data->num_phys)
return ERR_PTR(-ENODEV);
return data->phys[args->args[0]].phy;
@@ -255,8 +259,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
if (IS_ERR(data->base))
return PTR_ERR(data->base);
- /* Skip 0, 0 is the phy for otg which is not yet supported. */
- for (i = 1; i < data->num_phys; i++) {
+ for (i = 0; i < data->num_phys; i++) {
struct sun4i_usb_phy *phy = data->phys + i;
char name[16];
@@ -295,7 +298,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
return PTR_ERR(phy->pmu);
}
- phy->phy = devm_phy_create(dev, NULL, &sun4i_usb_phy_ops, NULL);
+ phy->phy = devm_phy_create(dev, NULL, &sun4i_usb_phy_ops);
if (IS_ERR(phy->phy)) {
dev_err(dev, "failed to create PHY %d\n", i);
return PTR_ERR(phy->phy);
diff --git a/drivers/phy/phy-ti-pipe3.c b/drivers/phy/phy-ti-pipe3.c
index ab1e22d9a1e8..c297b7a10d30 100644
--- a/drivers/phy/phy-ti-pipe3.c
+++ b/drivers/phy/phy-ti-pipe3.c
@@ -399,7 +399,7 @@ static int ti_pipe3_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, phy);
pm_runtime_enable(phy->dev);
- generic_phy = devm_phy_create(phy->dev, NULL, &ops, NULL);
+ generic_phy = devm_phy_create(phy->dev, NULL, &ops);
if (IS_ERR(generic_phy))
return PTR_ERR(generic_phy);
diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c
index 7b04befd5271..8e87f54671f3 100644
--- a/drivers/phy/phy-twl4030-usb.c
+++ b/drivers/phy/phy-twl4030-usb.c
@@ -606,7 +606,7 @@ static int twl4030_set_peripheral(struct usb_otg *otg,
otg->gadget = gadget;
if (!gadget)
- otg->phy->state = OTG_STATE_UNDEFINED;
+ otg->state = OTG_STATE_UNDEFINED;
return 0;
}
@@ -618,7 +618,7 @@ static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host)
otg->host = host;
if (!host)
- otg->phy->state = OTG_STATE_UNDEFINED;
+ otg->state = OTG_STATE_UNDEFINED;
return 0;
}
@@ -644,7 +644,6 @@ static int twl4030_usb_probe(struct platform_device *pdev)
struct usb_otg *otg;
struct device_node *np = pdev->dev.of_node;
struct phy_provider *phy_provider;
- struct phy_init_data *init_data = NULL;
twl = devm_kzalloc(&pdev->dev, sizeof(*twl), GFP_KERNEL);
if (!twl)
@@ -655,7 +654,6 @@ static int twl4030_usb_probe(struct platform_device *pdev)
(enum twl4030_usb_mode *)&twl->usb_mode);
else if (pdata) {
twl->usb_mode = pdata->usb_mode;
- init_data = pdata->init_data;
} else {
dev_err(&pdev->dev, "twl4030 initialized without pdata\n");
return -EINVAL;
@@ -676,11 +674,11 @@ static int twl4030_usb_probe(struct platform_device *pdev)
twl->phy.otg = otg;
twl->phy.type = USB_PHY_TYPE_USB2;
- otg->phy = &twl->phy;
+ otg->usb_phy = &twl->phy;
otg->set_host = twl4030_set_host;
otg->set_peripheral = twl4030_set_peripheral;
- phy = devm_phy_create(twl->dev, NULL, &ops, init_data);
+ phy = devm_phy_create(twl->dev, NULL, &ops);
if (IS_ERR(phy)) {
dev_dbg(&pdev->dev, "Failed to create PHY\n");
return PTR_ERR(phy);
@@ -733,6 +731,11 @@ static int twl4030_usb_probe(struct platform_device *pdev)
return status;
}
+ if (pdata)
+ err = phy_create_lookup(phy, "usb", "musb-hdrc.0");
+ if (err)
+ return err;
+
pm_runtime_mark_last_busy(&pdev->dev);
pm_runtime_put_autosuspend(twl->dev);
diff --git a/drivers/phy/phy-xgene.c b/drivers/phy/phy-xgene.c
index f8a51b16ade8..29214a36ea28 100644
--- a/drivers/phy/phy-xgene.c
+++ b/drivers/phy/phy-xgene.c
@@ -1707,7 +1707,7 @@ static int xgene_phy_probe(struct platform_device *pdev)
ctx->dev = &pdev->dev;
platform_set_drvdata(pdev, ctx);
- ctx->phy = devm_phy_create(ctx->dev, NULL, &xgene_phy_ops, NULL);
+ ctx->phy = devm_phy_create(ctx->dev, NULL, &xgene_phy_ops);
if (IS_ERR(ctx->phy)) {
dev_dbg(&pdev->dev, "Failed to create PHY\n");
rc = PTR_ERR(ctx->phy);
diff --git a/drivers/pinctrl/pinctrl-tegra-xusb.c b/drivers/pinctrl/pinctrl-tegra-xusb.c
index 080ec7723ef2..753d747d4261 100644
--- a/drivers/pinctrl/pinctrl-tegra-xusb.c
+++ b/drivers/pinctrl/pinctrl-tegra-xusb.c
@@ -915,7 +915,7 @@ static int tegra_xusb_padctl_probe(struct platform_device *pdev)
goto reset;
}
- phy = devm_phy_create(&pdev->dev, NULL, &pcie_phy_ops, NULL);
+ phy = devm_phy_create(&pdev->dev, NULL, &pcie_phy_ops);
if (IS_ERR(phy)) {
err = PTR_ERR(phy);
goto unregister;
@@ -924,7 +924,7 @@ static int tegra_xusb_padctl_probe(struct platform_device *pdev)
padctl->phys[TEGRA_XUSB_PADCTL_PCIE] = phy;
phy_set_drvdata(phy, padctl);
- phy = devm_phy_create(&pdev->dev, NULL, &sata_phy_ops, NULL);
+ phy = devm_phy_create(&pdev->dev, NULL, &sata_phy_ops);
if (IS_ERR(phy)) {
err = PTR_ERR(phy);
goto unregister;
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index 2f099c7df7b5..1fc86a2ca22d 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -10,6 +10,7 @@ ci_hdrc-$(CONFIG_USB_OTG_FSM) += otg_fsm.o
# Glue/Bridge layers go here
+obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_usb2.o
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_msm.o
obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc_zevio.o
diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index ea40626e0246..65913d48f0c8 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -161,7 +161,8 @@ struct hw_bank {
* @test_mode: the selected test mode
* @platdata: platform specific information supplied by parent device
* @vbus_active: is VBUS active
- * @transceiver: pointer to USB PHY, if any
+ * @phy: pointer to PHY, if any
+ * @usb_phy: pointer to USB PHY, if any and if using the USB PHY framework
* @hcd: pointer to usb_hcd for ehci host driver
* @debugfs: root dentry for this controller in debugfs
* @id_event: indicates there is an id event, and handled at ci_otg_work
@@ -177,6 +178,7 @@ struct ci_hdrc {
struct ci_role_driver *roles[CI_ROLE_END];
enum ci_role role;
bool is_otg;
+ struct usb_otg otg;
struct otg_fsm fsm;
struct ci_otg_fsm_timer_list *fsm_timer;
struct work_struct work;
@@ -201,7 +203,9 @@ struct ci_hdrc {
struct ci_hdrc_platform_data *platdata;
int vbus_active;
- struct usb_phy *transceiver;
+ struct phy *phy;
+ /* old usb_phy interface */
+ struct usb_phy *usb_phy;
struct usb_hcd *hcd;
struct dentry *debugfs;
bool id_event;
@@ -348,7 +352,7 @@ u32 hw_read_intr_enable(struct ci_hdrc *ci);
u32 hw_read_intr_status(struct ci_hdrc *ci);
-int hw_device_reset(struct ci_hdrc *ci, u32 mode);
+int hw_device_reset(struct ci_hdrc *ci);
int hw_port_test_set(struct ci_hdrc *ci, u8 mode);
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index a7ab0f15926e..450a168974d5 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -106,8 +106,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
struct ci_hdrc_platform_data pdata = {
.name = dev_name(&pdev->dev),
.capoffset = DEF_CAPOFFSET,
- .flags = CI_HDRC_REQUIRE_TRANSCEIVER |
- CI_HDRC_DISABLE_STREAMING,
+ .flags = CI_HDRC_DISABLE_STREAMING,
};
int ret;
const struct of_device_id *of_id =
@@ -115,10 +114,8 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
const struct ci_hdrc_imx_platform_flag *imx_platform_flag = of_id->data;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
- if (!data) {
- dev_err(&pdev->dev, "Failed to allocate ci_hdrc-imx data!\n");
+ if (!data)
return -ENOMEM;
- }
data->usbmisc_data = usbmisc_get_init_data(&pdev->dev);
if (IS_ERR(data->usbmisc_data))
@@ -147,7 +144,7 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
goto err_clk;
}
- pdata.phy = data->phy;
+ pdata.usb_phy = data->phy;
if (imx_platform_flag->flags & CI_HDRC_IMX_IMX28_WRITE_FIX)
pdata.flags |= CI_HDRC_IMX28_WRITE_FIX;
@@ -210,6 +207,41 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int imx_controller_suspend(struct device *dev)
+{
+ struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "at %s\n", __func__);
+
+ clk_disable_unprepare(data->clk);
+
+ return 0;
+}
+
+static int imx_controller_resume(struct device *dev)
+{
+ struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "at %s\n", __func__);
+
+ return clk_prepare_enable(data->clk);
+}
+
+static int ci_hdrc_imx_suspend(struct device *dev)
+{
+ return imx_controller_suspend(dev);
+}
+
+static int ci_hdrc_imx_resume(struct device *dev)
+{
+ return imx_controller_resume(dev);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)
+};
static struct platform_driver ci_hdrc_imx_driver = {
.probe = ci_hdrc_imx_probe,
.remove = ci_hdrc_imx_remove,
@@ -217,6 +249,7 @@ static struct platform_driver ci_hdrc_imx_driver = {
.name = "imx_usb",
.owner = THIS_MODULE,
.of_match_table = ci_hdrc_imx_dt_ids,
+ .pm = &ci_hdrc_imx_pm_ops,
},
};
diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
index 4935ac38fd00..d79ecc08a1be 100644
--- a/drivers/usb/chipidea/ci_hdrc_msm.c
+++ b/drivers/usb/chipidea/ci_hdrc_msm.c
@@ -26,15 +26,15 @@ static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n");
writel(0, USB_AHBBURST);
writel(0, USB_AHBMODE);
- usb_phy_init(ci->transceiver);
+ usb_phy_init(ci->usb_phy);
break;
case CI_HDRC_CONTROLLER_STOPPED_EVENT:
dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n");
/*
- * Put the transceiver in non-driving mode. Otherwise host
+ * Put the phy in non-driving mode. Otherwise host
* may not detect soft-disconnection.
*/
- usb_phy_notify_disconnect(ci->transceiver, USB_SPEED_UNKNOWN);
+ usb_phy_notify_disconnect(ci->usb_phy, USB_SPEED_UNKNOWN);
break;
default:
dev_dbg(dev, "unknown ci_hdrc event\n");
@@ -46,7 +46,6 @@ static struct ci_hdrc_platform_data ci_hdrc_msm_platdata = {
.name = "ci_hdrc_msm",
.capoffset = DEF_CAPOFFSET,
.flags = CI_HDRC_REGS_SHARED |
- CI_HDRC_REQUIRE_TRANSCEIVER |
CI_HDRC_DISABLE_STREAMING,
.notify_event = ci_hdrc_msm_notify_event,
@@ -68,7 +67,7 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev)
if (IS_ERR(phy))
return PTR_ERR(phy);
- ci_hdrc_msm_platdata.phy = phy;
+ ci_hdrc_msm_platdata.usb_phy = phy;
plat_ci = ci_hdrc_add_device(&pdev->dev,
pdev->resource, pdev->num_resources,
diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
new file mode 100644
index 000000000000..45844c951788
--- /dev/null
+++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2014 Marvell Technology Group Ltd.
+ *
+ * Antoine Tenart <antoine.tenart@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/usb/chipidea.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/ulpi.h>
+
+#include "ci.h"
+
+struct ci_hdrc_usb2_priv {
+ struct platform_device *ci_pdev;
+ struct clk *clk;
+};
+
+static struct ci_hdrc_platform_data ci_default_pdata = {
+ .capoffset = DEF_CAPOFFSET,
+ .flags = CI_HDRC_DISABLE_STREAMING,
+};
+
+static int ci_hdrc_usb2_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ci_hdrc_usb2_priv *priv;
+ struct ci_hdrc_platform_data *ci_pdata = dev_get_platdata(dev);
+ int ret;
+
+ if (!ci_pdata)
+ ci_pdata = &ci_default_pdata;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->clk = devm_clk_get(dev, NULL);
+ if (!IS_ERR(priv->clk)) {
+ ret = clk_prepare_enable(priv->clk);
+ if (ret) {
+ dev_err(dev, "failed to enable the clock: %d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
+ if (ret)
+ goto clk_err;
+
+ ci_pdata->name = dev_name(dev);
+
+ priv->ci_pdev = ci_hdrc_add_device(dev, pdev->resource,
+ pdev->num_resources, ci_pdata);
+ if (IS_ERR(priv->ci_pdev)) {
+ ret = PTR_ERR(priv->ci_pdev);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev,
+ "failed to register ci_hdrc platform device: %d\n",
+ ret);
+ goto clk_err;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ pm_runtime_no_callbacks(dev);
+ pm_runtime_enable(dev);
+
+ return 0;
+
+clk_err:
+ if (!IS_ERR(priv->clk))
+ clk_disable_unprepare(priv->clk);
+ return ret;
+}
+
+static int ci_hdrc_usb2_remove(struct platform_device *pdev)
+{
+ struct ci_hdrc_usb2_priv *priv = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ ci_hdrc_remove_device(priv->ci_pdev);
+ clk_disable_unprepare(priv->clk);
+
+ return 0;
+}
+
+static const struct of_device_id ci_hdrc_usb2_of_match[] = {
+ { .compatible = "chipidea,usb2" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ci_hdrc_usb2_of_match);
+
+static struct platform_driver ci_hdrc_usb2_driver = {
+ .probe = ci_hdrc_usb2_probe,
+ .remove = ci_hdrc_usb2_remove,
+ .driver = {
+ .name = "chipidea-usb2",
+ .of_match_table = of_match_ptr(ci_hdrc_usb2_of_match),
+ },
+};
+module_platform_driver(ci_hdrc_usb2_driver);
+
+MODULE_DESCRIPTION("ChipIdea HDRC USB2 binding for ci13xxx");
+MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 9bdc6bd73432..e14eafb2a05e 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -47,6 +47,7 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
+#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/idr.h>
@@ -189,24 +190,29 @@ u8 hw_port_test_get(struct ci_hdrc *ci)
return hw_read(ci, OP_PORTSC, PORTSC_PTC) >> __ffs(PORTSC_PTC);
}
+static void hw_wait_phy_stable(void)
+{
+ /*
+ * The phy needs some delay to output the stable status from low
+ * power mode. And for OTGSC, the status inputs are debounced
+ * using a 1 ms time constant, so, delay 2ms for controller to get
+ * the stable status, like vbus and id when the phy leaves low power.
+ */
+ usleep_range(2000, 2500);
+}
+
/* The PHY enters/leaves low power mode */
static void ci_hdrc_enter_lpm(struct ci_hdrc *ci, bool enable)
{
enum ci_hw_regs reg = ci->hw_bank.lpm ? OP_DEVLC : OP_PORTSC;
bool lpm = !!(hw_read(ci, reg, PORTSC_PHCD(ci->hw_bank.lpm)));
- if (enable && !lpm) {
+ if (enable && !lpm)
hw_write(ci, reg, PORTSC_PHCD(ci->hw_bank.lpm),
PORTSC_PHCD(ci->hw_bank.lpm));
- } else if (!enable && lpm) {
+ else if (!enable && lpm)
hw_write(ci, reg, PORTSC_PHCD(ci->hw_bank.lpm),
0);
- /*
- * the PHY needs some time (less
- * than 1ms) to leave low power mode.
- */
- usleep_range(1000, 1100);
- }
}
static int hw_device_init(struct ci_hdrc *ci, void __iomem *base)
@@ -299,6 +305,49 @@ static void hw_phymode_configure(struct ci_hdrc *ci)
}
/**
+ * _ci_usb_phy_init: initialize phy taking in account both phy and usb_phy
+ * interfaces
+ * @ci: the controller
+ *
+ * This function returns an error code if the phy failed to init
+ */
+static int _ci_usb_phy_init(struct ci_hdrc *ci)
+{
+ int ret;
+
+ if (ci->phy) {
+ ret = phy_init(ci->phy);
+ if (ret)
+ return ret;
+
+ ret = phy_power_on(ci->phy);
+ if (ret) {
+ phy_exit(ci->phy);
+ return ret;
+ }
+ } else {
+ ret = usb_phy_init(ci->usb_phy);
+ }
+
+ return ret;
+}
+
+/**
+ * _ci_usb_phy_exit: deinitialize phy taking in account both phy and usb_phy
+ * interfaces
+ * @ci: the controller
+ */
+static void ci_usb_phy_exit(struct ci_hdrc *ci)
+{
+ if (ci->phy) {
+ phy_power_off(ci->phy);
+ phy_exit(ci->phy);
+ } else {
+ usb_phy_shutdown(ci->usb_phy);
+ }
+}
+
+/**
* ci_usb_phy_init: initialize phy according to different phy type
* @ci: the controller
*
@@ -312,40 +361,68 @@ static int ci_usb_phy_init(struct ci_hdrc *ci)
case USBPHY_INTERFACE_MODE_UTMI:
case USBPHY_INTERFACE_MODE_UTMIW:
case USBPHY_INTERFACE_MODE_HSIC:
- ret = usb_phy_init(ci->transceiver);
- if (ret)
+ ret = _ci_usb_phy_init(ci);
+ if (!ret)
+ hw_wait_phy_stable();
+ else
return ret;
hw_phymode_configure(ci);
break;
case USBPHY_INTERFACE_MODE_ULPI:
case USBPHY_INTERFACE_MODE_SERIAL:
hw_phymode_configure(ci);
- ret = usb_phy_init(ci->transceiver);
+ ret = _ci_usb_phy_init(ci);
if (ret)
return ret;
break;
default:
- ret = usb_phy_init(ci->transceiver);
+ ret = _ci_usb_phy_init(ci);
+ if (!ret)
+ hw_wait_phy_stable();
}
return ret;
}
/**
- * hw_device_reset: resets chip (execute without interruption)
+ * hw_controller_reset: do controller reset
* @ci: the controller
*
* This function returns an error code
*/
-int hw_device_reset(struct ci_hdrc *ci, u32 mode)
+static int hw_controller_reset(struct ci_hdrc *ci)
{
+ int count = 0;
+
+ hw_write(ci, OP_USBCMD, USBCMD_RST, USBCMD_RST);
+ while (hw_read(ci, OP_USBCMD, USBCMD_RST)) {
+ udelay(10);
+ if (count++ > 1000)
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+/**
+ * hw_device_reset: resets chip (execute without interruption)
+ * @ci: the controller
+ *
+ * This function returns an error code
+ */
+int hw_device_reset(struct ci_hdrc *ci)
+{
+ int ret;
+
/* should flush & stop before reset */
hw_write(ci, OP_ENDPTFLUSH, ~0, ~0);
hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
- hw_write(ci, OP_USBCMD, USBCMD_RST, USBCMD_RST);
- while (hw_read(ci, OP_USBCMD, USBCMD_RST))
- udelay(10); /* not RTOS friendly */
+ ret = hw_controller_reset(ci);
+ if (ret) {
+ dev_err(ci->dev, "error resetting controller, ret=%d\n", ret);
+ return ret;
+ }
if (ci->platdata->notify_event)
ci->platdata->notify_event(ci,
@@ -363,12 +440,12 @@ int hw_device_reset(struct ci_hdrc *ci, u32 mode)
/* USBMODE should be configured step by step */
hw_write(ci, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE);
- hw_write(ci, OP_USBMODE, USBMODE_CM, mode);
+ hw_write(ci, OP_USBMODE, USBMODE_CM, USBMODE_CM_DC);
/* HW >= 2.3 */
hw_write(ci, OP_USBMODE, USBMODE_SLOM, USBMODE_SLOM);
- if (hw_read(ci, OP_USBMODE, USBMODE_CM) != mode) {
- pr_err("cannot enter in %s mode", ci_role(ci)->name);
+ if (hw_read(ci, OP_USBMODE, USBMODE_CM) != USBMODE_CM_DC) {
+ pr_err("cannot enter in %s device mode", ci_role(ci)->name);
pr_err("lpm = %i", ci->hw_bank.lpm);
return -ENODEV;
}
@@ -472,7 +549,7 @@ static int ci_get_platdata(struct device *dev,
if (PTR_ERR(platdata->reg_vbus) == -EPROBE_DEFER) {
return -EPROBE_DEFER;
} else if (PTR_ERR(platdata->reg_vbus) == -ENODEV) {
- /* no vbus regualator is needed */
+ /* no vbus regulator is needed */
platdata->reg_vbus = NULL;
} else if (IS_ERR(platdata->reg_vbus)) {
dev_err(dev, "Getting regulator error: %ld\n",
@@ -589,11 +666,10 @@ static int ci_hdrc_probe(struct platform_device *pdev)
return PTR_ERR(base);
ci = devm_kzalloc(dev, sizeof(*ci), GFP_KERNEL);
- if (!ci) {
- dev_err(dev, "can't allocate device\n");
+ if (!ci)
return -ENOMEM;
- }
+ platform_set_drvdata(pdev, ci);
ci->dev = dev;
ci->platdata = dev_get_platdata(dev);
ci->imx28_write_fix = !!(ci->platdata->flags &
@@ -605,36 +681,32 @@ static int ci_hdrc_probe(struct platform_device *pdev)
return -ENODEV;
}
- if (ci->platdata->phy)
- ci->transceiver = ci->platdata->phy;
- else
- ci->transceiver = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
-
- if (IS_ERR(ci->transceiver)) {
- ret = PTR_ERR(ci->transceiver);
- /*
- * if -ENXIO is returned, it means PHY layer wasn't
- * enabled, so it makes no sense to return -EPROBE_DEFER
- * in that case, since no PHY driver will ever probe.
- */
- if (ret == -ENXIO)
- return ret;
+ if (ci->platdata->phy) {
+ ci->phy = ci->platdata->phy;
+ } else if (ci->platdata->usb_phy) {
+ ci->usb_phy = ci->platdata->usb_phy;
+ } else {
+ ci->phy = devm_phy_get(dev->parent, "usb-phy");
+ ci->usb_phy = devm_usb_get_phy(dev->parent, USB_PHY_TYPE_USB2);
+
+ /* if both generic PHY and USB PHY layers aren't enabled */
+ if (PTR_ERR(ci->phy) == -ENOSYS &&
+ PTR_ERR(ci->usb_phy) == -ENXIO)
+ return -ENXIO;
+
+ if (IS_ERR(ci->phy) && IS_ERR(ci->usb_phy))
+ return -EPROBE_DEFER;
- dev_err(dev, "no usb2 phy configured\n");
- return -EPROBE_DEFER;
+ if (IS_ERR(ci->phy))
+ ci->phy = NULL;
+ else if (IS_ERR(ci->usb_phy))
+ ci->usb_phy = NULL;
}
ret = ci_usb_phy_init(ci);
if (ret) {
dev_err(dev, "unable to init phy: %d\n", ret);
return ret;
- } else {
- /*
- * The delay to sync PHY's status, the maximum delay is
- * 2ms since the otgsc uses 1ms timer to debounce the
- * PHY's input
- */
- usleep_range(2000, 2500);
}
ci->hw_bank.phys = res->start;
@@ -711,9 +783,8 @@ static int ci_hdrc_probe(struct platform_device *pdev)
}
}
- platform_set_drvdata(pdev, ci);
- ret = request_irq(ci->irq, ci_irq, IRQF_SHARED, ci->platdata->name,
- ci);
+ ret = devm_request_irq(dev, ci->irq, ci_irq, IRQF_SHARED,
+ ci->platdata->name, ci);
if (ret)
goto stop;
@@ -724,11 +795,10 @@ static int ci_hdrc_probe(struct platform_device *pdev)
if (!ret)
return 0;
- free_irq(ci->irq, ci);
stop:
ci_role_destroy(ci);
deinit_phy:
- usb_phy_shutdown(ci->transceiver);
+ ci_usb_phy_exit(ci);
return ret;
}
@@ -738,19 +808,66 @@ static int ci_hdrc_remove(struct platform_device *pdev)
struct ci_hdrc *ci = platform_get_drvdata(pdev);
dbg_remove_files(ci);
- free_irq(ci->irq, ci);
ci_role_destroy(ci);
ci_hdrc_enter_lpm(ci, true);
- usb_phy_shutdown(ci->transceiver);
+ ci_usb_phy_exit(ci);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static void ci_controller_suspend(struct ci_hdrc *ci)
+{
+ ci_hdrc_enter_lpm(ci, true);
+
+ if (ci->usb_phy)
+ usb_phy_set_suspend(ci->usb_phy, 1);
+}
+
+static int ci_controller_resume(struct device *dev)
+{
+ struct ci_hdrc *ci = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "at %s\n", __func__);
+
+ ci_hdrc_enter_lpm(ci, false);
+
+ if (ci->usb_phy) {
+ usb_phy_set_suspend(ci->usb_phy, 0);
+ usb_phy_set_wakeup(ci->usb_phy, false);
+ hw_wait_phy_stable();
+ }
return 0;
}
+static int ci_suspend(struct device *dev)
+{
+ struct ci_hdrc *ci = dev_get_drvdata(dev);
+
+ if (ci->wq)
+ flush_workqueue(ci->wq);
+
+ ci_controller_suspend(ci);
+
+ return 0;
+}
+
+static int ci_resume(struct device *dev)
+{
+ return ci_controller_resume(dev);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct dev_pm_ops ci_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ci_suspend, ci_resume)
+};
static struct platform_driver ci_hdrc_driver = {
.probe = ci_hdrc_probe,
.remove = ci_hdrc_remove,
.driver = {
.name = "ci_hdrc",
+ .pm = &ci_pm_ops,
.owner = THIS_MODULE,
},
};
diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c
index 795d6538d630..268e4236e84c 100644
--- a/drivers/usb/chipidea/debug.c
+++ b/drivers/usb/chipidea/debug.c
@@ -220,7 +220,7 @@ static int ci_otg_show(struct seq_file *s, void *unused)
/* ------ State ----- */
seq_printf(s, "OTG state: %s\n\n",
- usb_otg_state_string(ci->transceiver->state));
+ usb_otg_state_string(ci->otg.state));
/* ------ State Machine Variables ----- */
seq_printf(s, "a_bus_drop: %d\n", fsm->a_bus_drop);
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index ebde7b6ce687..c1694cff1eaf 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -34,6 +34,44 @@
static struct hc_driver __read_mostly ci_ehci_hc_driver;
+struct ehci_ci_priv {
+ struct regulator *reg_vbus;
+};
+
+static int ehci_ci_portpower(struct usb_hcd *hcd, int portnum, bool enable)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ struct ehci_ci_priv *priv = (struct ehci_ci_priv *)ehci->priv;
+ struct device *dev = hcd->self.controller;
+ struct ci_hdrc *ci = dev_get_drvdata(dev);
+ int ret = 0;
+ int port = HCS_N_PORTS(ehci->hcs_params);
+
+ if (priv->reg_vbus && !ci_otg_is_fsm_mode(ci)) {
+ if (port > 1) {
+ dev_warn(dev,
+ "Not support multi-port regulator control\n");
+ return 0;
+ }
+ if (enable)
+ ret = regulator_enable(priv->reg_vbus);
+ else
+ ret = regulator_disable(priv->reg_vbus);
+ if (ret) {
+ dev_err(dev,
+ "Failed to %s vbus regulator, ret=%d\n",
+ enable ? "enable" : "disable", ret);
+ return ret;
+ }
+ }
+ return 0;
+};
+
+static const struct ehci_driver_overrides ehci_ci_overrides = {
+ .extra_priv_size = sizeof(struct ehci_ci_priv),
+ .port_power = ehci_ci_portpower,
+};
+
static irqreturn_t host_irq(struct ci_hdrc *ci)
{
return usb_hcd_irq(ci->irq, ci->hcd);
@@ -43,6 +81,7 @@ static int host_start(struct ci_hdrc *ci)
{
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
+ struct ehci_ci_priv *priv;
int ret;
if (usb_disabled())
@@ -52,15 +91,17 @@ static int host_start(struct ci_hdrc *ci)
if (!hcd)
return -ENOMEM;
- dev_set_drvdata(ci->dev, ci);
hcd->rsrc_start = ci->hw_bank.phys;
hcd->rsrc_len = ci->hw_bank.size;
hcd->regs = ci->hw_bank.abs;
hcd->has_tt = 1;
hcd->power_budget = ci->platdata->power_budget;
- hcd->usb_phy = ci->transceiver;
hcd->tpl_support = ci->platdata->tpl_support;
+ if (ci->phy)
+ hcd->phy = ci->phy;
+ else
+ hcd->usb_phy = ci->usb_phy;
ehci = hcd_to_ehci(hcd);
ehci->caps = ci->hw_bank.cap;
@@ -68,28 +109,21 @@ static int host_start(struct ci_hdrc *ci)
ehci->has_tdi_phy_lpm = ci->hw_bank.lpm;
ehci->imx28_write_fix = ci->imx28_write_fix;
- /*
- * vbus is always on if host is not in OTG FSM mode,
- * otherwise should be controlled by OTG FSM
- */
- if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci)) {
- ret = regulator_enable(ci->platdata->reg_vbus);
- if (ret) {
- dev_err(ci->dev,
- "Failed to enable vbus regulator, ret=%d\n",
- ret);
- goto put_hcd;
- }
- }
+ priv = (struct ehci_ci_priv *)ehci->priv;
+ priv->reg_vbus = NULL;
+
+ if (ci->platdata->reg_vbus)
+ priv->reg_vbus = ci->platdata->reg_vbus;
ret = usb_add_hcd(hcd, 0, 0);
if (ret) {
- goto disable_reg;
+ goto put_hcd;
} else {
- struct usb_otg *otg = ci->transceiver->otg;
+ struct usb_otg *otg = &ci->otg;
ci->hcd = hcd;
- if (otg) {
+
+ if (ci_otg_is_fsm_mode(ci)) {
otg->host = &hcd->self;
hcd->self.otg_port = 1;
}
@@ -100,10 +134,6 @@ static int host_start(struct ci_hdrc *ci)
return ret;
-disable_reg:
- if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci))
- regulator_disable(ci->platdata->reg_vbus);
-
put_hcd:
usb_put_hcd(hcd);
@@ -117,8 +147,6 @@ static void host_stop(struct ci_hdrc *ci)
if (hcd) {
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
- if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci))
- regulator_disable(ci->platdata->reg_vbus);
}
}
@@ -146,7 +174,7 @@ int ci_hdrc_host_init(struct ci_hdrc *ci)
rdrv->name = "host";
ci->roles[CI_ROLE_HOST] = rdrv;
- ehci_init_driver(&ci_ehci_hc_driver, NULL);
+ ehci_init_driver(&ci_ehci_hc_driver, &ehci_ci_overrides);
return 0;
}
diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
index caaabc58021e..562e581f6765 100644
--- a/drivers/usb/chipidea/otg_fsm.c
+++ b/drivers/usb/chipidea/otg_fsm.c
@@ -303,7 +303,7 @@ static void a_wait_vfall_tmout_func(void *ptr, unsigned long indicator)
set_tmout(ci, indicator);
/* Disable port power */
hw_write(ci, OP_PORTSC, PORTSC_W1C_BITS | PORTSC_PP, 0);
- /* Clear exsiting DP irq */
+ /* Clear existing DP irq */
hw_write_otgsc(ci, OTGSC_DPIS, OTGSC_DPIS);
/* Enable data pulse irq */
hw_write_otgsc(ci, OTGSC_DPIE, OTGSC_DPIE);
@@ -328,7 +328,7 @@ static void b_ssend_srp_tmout_func(void *ptr, unsigned long indicator)
set_tmout(ci, indicator);
/* only vbus fall below B_sess_vld in b_idle state */
- if (ci->transceiver->state == OTG_STATE_B_IDLE)
+ if (ci->fsm.otg->state == OTG_STATE_B_IDLE)
ci_otg_queue_work(ci);
}
@@ -543,7 +543,7 @@ static int ci_otg_start_host(struct otg_fsm *fsm, int on)
ci_role_start(ci, CI_ROLE_HOST);
} else {
ci_role_stop(ci);
- hw_device_reset(ci, USBMODE_CM_DC);
+ hw_device_reset(ci);
ci_role_start(ci, CI_ROLE_GADGET);
}
mutex_lock(&fsm->lock);
@@ -582,11 +582,11 @@ int ci_otg_fsm_work(struct ci_hdrc *ci)
* when there is no gadget class driver
*/
if (ci->fsm.id && !(ci->driver) &&
- ci->transceiver->state < OTG_STATE_A_IDLE)
+ ci->fsm.otg->state < OTG_STATE_A_IDLE)
return 0;
if (otg_statemachine(&ci->fsm)) {
- if (ci->transceiver->state == OTG_STATE_A_IDLE) {
+ if (ci->fsm.otg->state == OTG_STATE_A_IDLE) {
/*
* Further state change for cases:
* a_idle to b_idle; or
@@ -600,7 +600,7 @@ int ci_otg_fsm_work(struct ci_hdrc *ci)
ci_otg_queue_work(ci);
if (ci->id_event)
ci->id_event = false;
- } else if (ci->transceiver->state == OTG_STATE_B_IDLE) {
+ } else if (ci->fsm.otg->state == OTG_STATE_B_IDLE) {
if (ci->fsm.b_sess_vld) {
ci->fsm.power_up = 0;
/*
@@ -627,7 +627,7 @@ static void ci_otg_fsm_event(struct ci_hdrc *ci)
otg_bsess_vld = hw_read_otgsc(ci, OTGSC_BSV);
port_conn = hw_read(ci, OP_PORTSC, PORTSC_CCS);
- switch (ci->transceiver->state) {
+ switch (ci->fsm.otg->state) {
case OTG_STATE_A_WAIT_BCON:
if (port_conn) {
fsm->b_conn = 1;
@@ -663,7 +663,7 @@ static void ci_otg_fsm_event(struct ci_hdrc *ci)
fsm->b_bus_suspend = 1;
/*
* Init a timer to know how long this suspend
- * will contine, if time out, indicates B no longer
+ * will continue, if time out, indicates B no longer
* wants to be host role
*/
ci_otg_add_timer(ci, A_BIDL_ADIS);
@@ -778,34 +778,25 @@ void ci_hdrc_otg_fsm_start(struct ci_hdrc *ci)
int ci_hdrc_otg_fsm_init(struct ci_hdrc *ci)
{
int retval = 0;
- struct usb_otg *otg;
- otg = devm_kzalloc(ci->dev,
- sizeof(struct usb_otg), GFP_KERNEL);
- if (!otg) {
- dev_err(ci->dev,
- "Failed to allocate usb_otg structure for ci hdrc otg!\n");
- return -ENOMEM;
- }
+ if (ci->phy)
+ ci->otg.phy = ci->phy;
+ else
+ ci->otg.usb_phy = ci->usb_phy;
- otg->phy = ci->transceiver;
- otg->gadget = &ci->gadget;
- ci->fsm.otg = otg;
- ci->transceiver->otg = ci->fsm.otg;
+ ci->otg.gadget = &ci->gadget;
+ ci->fsm.otg = &ci->otg;
ci->fsm.power_up = 1;
ci->fsm.id = hw_read_otgsc(ci, OTGSC_ID) ? 1 : 0;
- ci->transceiver->state = OTG_STATE_UNDEFINED;
+ ci->fsm.otg->state = OTG_STATE_UNDEFINED;
ci->fsm.ops = &ci_otg_ops;
mutex_init(&ci->fsm.lock);
ci->fsm_timer = devm_kzalloc(ci->dev,
sizeof(struct ci_otg_fsm_timer_list), GFP_KERNEL);
- if (!ci->fsm_timer) {
- dev_err(ci->dev,
- "Failed to allocate timer structure for ci hdrc otg!\n");
+ if (!ci->fsm_timer)
return -ENOMEM;
- }
INIT_LIST_HEAD(&ci->fsm_timer->active_timers);
retval = ci_otg_init_timers(ci);
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 0444d3f8971a..4fe18ce3bd5a 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -692,10 +692,8 @@ __acquires(ci->lock)
int retval;
spin_unlock(&ci->lock);
- if (ci->gadget.speed != USB_SPEED_UNKNOWN) {
- if (ci->driver)
- ci->driver->disconnect(&ci->gadget);
- }
+ if (ci->gadget.speed != USB_SPEED_UNKNOWN)
+ usb_gadget_udc_reset(&ci->gadget, ci->driver);
retval = _gadget_stop_activity(&ci->gadget);
if (retval)
@@ -709,8 +707,6 @@ __acquires(ci->lock)
if (ci->status == NULL)
retval = -ENOMEM;
- usb_gadget_set_state(&ci->gadget, USB_STATE_DEFAULT);
-
done:
spin_lock(&ci->lock);
@@ -1475,7 +1471,7 @@ static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
if (gadget_ready) {
if (is_active) {
pm_runtime_get_sync(&_gadget->dev);
- hw_device_reset(ci, USBMODE_CM_DC);
+ hw_device_reset(ci);
hw_device_state(ci, ci->ep0out->qh.dma);
usb_gadget_set_state(_gadget, USB_STATE_POWERED);
} else {
@@ -1519,8 +1515,8 @@ static int ci_udc_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
{
struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
- if (ci->transceiver)
- return usb_phy_set_power(ci->transceiver, ma);
+ if (ci->usb_phy)
+ return usb_phy_set_power(ci->usb_phy, ma);
return -ENOTSUPP;
}
@@ -1544,8 +1540,7 @@ static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
static int ci_udc_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
-static int ci_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver);
+static int ci_udc_stop(struct usb_gadget *gadget);
/**
* Device operations part of the API to the USB controller hardware,
* which don't involve endpoints (or i/o)
@@ -1665,7 +1660,7 @@ static int ci_udc_start(struct usb_gadget *gadget,
pm_runtime_get_sync(&ci->gadget.dev);
if (ci->vbus_active) {
spin_lock_irqsave(&ci->lock, flags);
- hw_device_reset(ci, USBMODE_CM_DC);
+ hw_device_reset(ci);
} else {
pm_runtime_put_sync(&ci->gadget.dev);
return retval;
@@ -1682,8 +1677,7 @@ static int ci_udc_start(struct usb_gadget *gadget,
/**
* ci_udc_stop: unregister a gadget driver
*/
-static int ci_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int ci_udc_stop(struct usb_gadget *gadget)
{
struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
unsigned long flags;
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 926c997ef310..58591e9dcede 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -117,10 +117,9 @@ static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
if (data->index > 2)
return -EINVAL;
- reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
-
if (data->evdo) {
spin_lock_irqsave(&usbmisc->lock, flags);
+ reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
val = readl(reg);
writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
spin_unlock_irqrestore(&usbmisc->lock, flags);
@@ -172,8 +171,7 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
return -EINVAL;
/* Select a 24 MHz reference clock for the PHY */
- reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET;
- val = readl(reg);
+ val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
val |= MX53_USB_PLL_DIV_24_MHZ;
writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 077d58ac3dcb..546a17e8ad5b 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1157,8 +1157,6 @@ static int acm_probe(struct usb_interface *intf,
case USB_CDC_CALL_MANAGEMENT_TYPE:
call_management_function = buffer[3];
call_interface_num = buffer[4];
- if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
- dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
break;
default:
/* there are LOTS more CDC descriptors that
@@ -1197,10 +1195,11 @@ next_desc:
} else {
control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
- if (!control_interface || !data_interface) {
- dev_dbg(&intf->dev, "no interfaces\n");
- return -ENODEV;
- }
+ }
+
+ if (!control_interface || !data_interface) {
+ dev_dbg(&intf->dev, "no interfaces\n");
+ return -ENODEV;
}
if (data_interface_num != call_interface_num)
@@ -1475,6 +1474,7 @@ alloc_fail8:
&dev_attr_wCountryCodes);
device_remove_file(&acm->control->dev,
&dev_attr_iCountryCodeRelDate);
+ kfree(acm->country_codes);
}
device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
alloc_fail7:
@@ -1813,11 +1813,6 @@ static const struct usb_device_id acm_ids[] = {
/* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
- /* Support Lego NXT using pbLua firmware */
- { USB_DEVICE(0x0694, 0xff00),
- .driver_info = NOT_A_MODEM,
- },
-
/* Support for Droids MuIn LCD */
{ USB_DEVICE(0x04d8, 0x000b),
.driver_info = NO_DATA_INTERFACE,
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index d3251ebd09e2..ffeb3c83941f 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -130,7 +130,6 @@ struct acm {
#define NO_UNION_NORMAL BIT(0)
#define SINGLE_RX_URB BIT(1)
#define NO_CAP_LINE BIT(2)
-#define NOT_A_MODEM BIT(3)
#define NO_DATA_INTERFACE BIT(4)
#define IGNORE_DEVICE BIT(5)
#define QUIRK_CONTROL_LINE_STATE BIT(6)
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index ec978408a2ee..960bc089111b 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -1104,10 +1104,8 @@ static int usbtmc_probe(struct usb_interface *intf,
dev_dbg(&intf->dev, "%s called\n", __func__);
data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
- if (!data) {
- dev_err(&intf->dev, "Unable to allocate kernel memory\n");
+ if (!data)
return -ENOMEM;
- }
data->intf = intf;
data->id = id;
diff --git a/drivers/usb/common/usb-otg-fsm.c b/drivers/usb/common/usb-otg-fsm.c
index 98e8340a5bb1..c6b35b77dab7 100644
--- a/drivers/usb/common/usb-otg-fsm.c
+++ b/drivers/usb/common/usb-otg-fsm.c
@@ -124,10 +124,10 @@ static void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
{
state_changed = 1;
- if (fsm->otg->phy->state == new_state)
+ if (fsm->otg->state == new_state)
return 0;
VDBG("Set state: %s\n", usb_otg_state_string(new_state));
- otg_leave_state(fsm, fsm->otg->phy->state);
+ otg_leave_state(fsm, fsm->otg->state);
switch (new_state) {
case OTG_STATE_B_IDLE:
otg_drv_vbus(fsm, 0);
@@ -236,7 +236,7 @@ static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
break;
}
- fsm->otg->phy->state = new_state;
+ fsm->otg->state = new_state;
return 0;
}
@@ -247,7 +247,7 @@ int otg_statemachine(struct otg_fsm *fsm)
mutex_lock(&fsm->lock);
- state = fsm->otg->phy->state;
+ state = fsm->otg->state;
state_changed = 0;
/* State machine state change judgement */
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 278be0515e8e..11cee55ae397 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2646,7 +2646,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
}
}
- if (IS_ENABLED(CONFIG_GENERIC_PHY)) {
+ if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) {
struct phy *phy = phy_get(hcd->self.controller, "usb");
if (IS_ERR(phy)) {
@@ -2666,6 +2666,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
goto err_phy;
}
hcd->phy = phy;
+ hcd->remove_phy = 1;
}
}
@@ -2812,7 +2813,7 @@ err_allocate_root_hub:
err_register_bus:
hcd_buffer_destroy(hcd);
err_create_buf:
- if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) {
+ if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) {
phy_power_off(hcd->phy);
phy_exit(hcd->phy);
phy_put(hcd->phy);
@@ -2896,7 +2897,7 @@ void usb_remove_hcd(struct usb_hcd *hcd)
usb_deregister_bus(&hcd->self);
hcd_buffer_destroy(hcd);
- if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) {
+ if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) {
phy_power_off(hcd->phy);
phy_exit(hcd->phy);
phy_put(hcd->phy);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index c9596525ba8c..aeb50bb6ba9c 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2543,11 +2543,14 @@ int usb_authorize_device(struct usb_device *usb_dev)
"can't autoresume for authorization: %d\n", result);
goto error_autoresume;
}
- result = usb_get_device_descriptor(usb_dev, sizeof(usb_dev->descriptor));
- if (result < 0) {
- dev_err(&usb_dev->dev, "can't re-read device descriptor for "
- "authorization: %d\n", result);
- goto error_device_descriptor;
+
+ if (usb_dev->wusb) {
+ result = usb_get_device_descriptor(usb_dev, sizeof(usb_dev->descriptor));
+ if (result < 0) {
+ dev_err(&usb_dev->dev, "can't re-read device descriptor for "
+ "authorization: %d\n", result);
+ goto error_device_descriptor;
+ }
}
usb_dev->authorized = 1;
@@ -3907,14 +3910,9 @@ static void usb_enable_link_state(struct usb_hcd *hcd, struct usb_device *udev,
static int usb_disable_link_state(struct usb_hcd *hcd, struct usb_device *udev,
enum usb3_link_state state)
{
- int feature;
-
switch (state) {
case USB3_LPM_U1:
- feature = USB_PORT_FEAT_U1_TIMEOUT;
- break;
case USB3_LPM_U2:
- feature = USB_PORT_FEAT_U2_TIMEOUT;
break;
default:
dev_warn(&udev->dev, "%s: Can't disable non-U1 or U2 state.\n",
diff --git a/drivers/usb/dwc2/Kconfig b/drivers/usb/dwc2/Kconfig
index f93807b3631a..b323c4c11b0a 100644
--- a/drivers/usb/dwc2/Kconfig
+++ b/drivers/usb/dwc2/Kconfig
@@ -1,6 +1,6 @@
config USB_DWC2
- bool "DesignWare USB2 DRD Core Support"
- depends on USB
+ tristate "DesignWare USB2 DRD Core Support"
+ depends on USB || USB_GADGET
help
Say Y here if your system has a Dual Role Hi-Speed USB
controller based on the DesignWare HSOTG IP Core.
@@ -10,49 +10,61 @@ config USB_DWC2
bus interface module (if you have a PCI bus system) will be
called dwc2_pci.ko, and the platform interface module (for
controllers directly connected to the CPU) will be called
- dwc2_platform.ko. For gadget mode, there will be a single
- module called dwc2_gadget.ko.
-
- NOTE: The s3c-hsotg driver is now renamed to dwc2_gadget. The
- host and gadget drivers are still currently separate drivers.
- There are plans to merge the dwc2_gadget driver with the dwc2
- host driver in the near future to create a dual-role driver.
+ dwc2_platform.ko. For all modes(host, gadget and dual-role), there
+ will be an additional module named dwc2.ko.
if USB_DWC2
+choice
+ bool "DWC2 Mode Selection"
+ default USB_DWC2_DUAL_ROLE if (USB && USB_GADGET)
+ default USB_DWC2_HOST if (USB && !USB_GADGET)
+ default USB_DWC2_PERIPHERAL if (!USB && USB_GADGET)
+
config USB_DWC2_HOST
- tristate "Host only mode"
+ bool "Host only mode"
depends on USB
help
The Designware USB2.0 high-speed host controller
- integrated into many SoCs.
+ integrated into many SoCs. Select this option if you want the
+ driver to operate in Host-only mode.
-config USB_DWC2_PLATFORM
- bool "DWC2 Platform"
- depends on USB_DWC2_HOST
- default USB_DWC2_HOST
+comment "Gadget/Dual-role mode requires USB Gadget support to be enabled"
+
+config USB_DWC2_PERIPHERAL
+ bool "Gadget only mode"
+ depends on USB_GADGET=y || USB_GADGET=USB_DWC2
help
- The Designware USB2.0 platform interface module for
- controllers directly connected to the CPU. This is only
- used for host mode.
+ The Designware USB2.0 high-speed gadget controller
+ integrated into many SoCs. Select this option if you want the
+ driver to operate in Peripheral-only mode. This option requires
+ USB_GADGET to be enabled.
+
+config USB_DWC2_DUAL_ROLE
+ bool "Dual Role mode"
+ depends on (USB=y || USB=USB_DWC2) && (USB_GADGET=y || USB_GADGET=USB_DWC2)
+ help
+ Select this option if you want the driver to work in a dual-role
+ mode. In this mode both host and gadget features are enabled, and
+ the role will be determined by the cable that gets plugged-in. This
+ option requires USB_GADGET to be enabled.
+endchoice
+
+config USB_DWC2_PLATFORM
+ tristate "DWC2 Platform"
+ default USB_DWC2_HOST || USB_DWC2_PERIPHERAL
+ help
+ The Designware USB2.0 platform interface module for
+ controllers directly connected to the CPU.
config USB_DWC2_PCI
- bool "DWC2 PCI"
+ tristate "DWC2 PCI"
depends on USB_DWC2_HOST && PCI
default USB_DWC2_HOST
help
The Designware USB2.0 PCI interface module for controllers
connected to a PCI bus. This is only used for host mode.
-comment "Gadget mode requires USB Gadget support to be enabled"
-
-config USB_DWC2_PERIPHERAL
- tristate "Gadget only mode"
- depends on USB_GADGET
- help
- The Designware USB2.0 high-speed gadget controller
- integrated into many SoCs.
-
config USB_DWC2_DEBUG
bool "Enable Debugging Messages"
help
diff --git a/drivers/usb/dwc2/Makefile b/drivers/usb/dwc2/Makefile
index b73d2a527970..8f752679752a 100644
--- a/drivers/usb/dwc2/Makefile
+++ b/drivers/usb/dwc2/Makefile
@@ -1,28 +1,28 @@
ccflags-$(CONFIG_USB_DWC2_DEBUG) += -DDEBUG
ccflags-$(CONFIG_USB_DWC2_VERBOSE) += -DVERBOSE_DEBUG
-obj-$(CONFIG_USB_DWC2_HOST) += dwc2.o
+obj-$(CONFIG_USB_DWC2) += dwc2.o
dwc2-y := core.o core_intr.o
-dwc2-y += hcd.o hcd_intr.o
-dwc2-y += hcd_queue.o hcd_ddma.o
+
+ifneq ($(filter y,$(CONFIG_USB_DWC2_HOST) $(CONFIG_USB_DWC2_DUAL_ROLE)),)
+ dwc2-y += hcd.o hcd_intr.o
+ dwc2-y += hcd_queue.o hcd_ddma.o
+endif
+
+ifneq ($(filter y,$(CONFIG_USB_DWC2_PERIPHERAL) $(CONFIG_USB_DWC2_DUAL_ROLE)),)
+ dwc2-y += gadget.o
+endif
# NOTE: The previous s3c-hsotg peripheral mode only driver has been moved to
# this location and renamed gadget.c. When building for dynamically linked
-# modules, dwc2_gadget.ko will get built for peripheral mode. For host mode,
-# the core module will be dwc2.ko, the PCI bus interface module will called
-# dwc2_pci.ko and the platform interface module will be called dwc2_platform.ko.
-# At present the host and gadget driver will be separate drivers, but there
-# are plans in the near future to create a dual-role driver.
+# modules, dwc2.ko will get built for host mode, peripheral mode, and dual-role
+# mode. The PCI bus interface module will called dwc2_pci.ko and the platform
+# interface module will be called dwc2_platform.ko.
ifneq ($(CONFIG_USB_DWC2_PCI),)
- obj-$(CONFIG_USB_DWC2_HOST) += dwc2_pci.o
+ obj-$(CONFIG_USB_DWC2) += dwc2_pci.o
dwc2_pci-y := pci.o
endif
-ifneq ($(CONFIG_USB_DWC2_PLATFORM),)
- obj-$(CONFIG_USB_DWC2_HOST) += dwc2_platform.o
- dwc2_platform-y := platform.o
-endif
-
-obj-$(CONFIG_USB_DWC2_PERIPHERAL) += dwc2_gadget.o
-dwc2_gadget-y := gadget.o
+obj-$(CONFIG_USB_DWC2_PLATFORM) += dwc2_platform.o
+dwc2_platform-y := platform.o
diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index d9269459d481..7605850b7a9c 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -458,16 +458,6 @@ int dwc2_core_init(struct dwc2_hsotg *hsotg, bool select_phy, int irq)
/* Clear the SRP success bit for FS-I2c */
hsotg->srp_success = 0;
- if (irq >= 0) {
- dev_dbg(hsotg->dev, "registering common handler for irq%d\n",
- irq);
- retval = devm_request_irq(hsotg->dev, irq,
- dwc2_handle_common_intr, IRQF_SHARED,
- dev_name(hsotg->dev), hsotg);
- if (retval)
- return retval;
- }
-
/* Enable common interrupts */
dwc2_enable_common_interrupts(hsotg);
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 55c90c53f2d6..7a70a1349334 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -84,7 +84,7 @@ static const char * const s3c_hsotg_supply_names[] = {
*/
#define EP0_MPS_LIMIT 64
-struct s3c_hsotg;
+struct dwc2_hsotg;
struct s3c_hsotg_req;
/**
@@ -130,7 +130,7 @@ struct s3c_hsotg_req;
struct s3c_hsotg_ep {
struct usb_ep ep;
struct list_head queue;
- struct s3c_hsotg *parent;
+ struct dwc2_hsotg *parent;
struct s3c_hsotg_req *req;
struct dentry *debugfs;
@@ -155,67 +155,6 @@ struct s3c_hsotg_ep {
};
/**
- * struct s3c_hsotg - driver state.
- * @dev: The parent device supplied to the probe function
- * @driver: USB gadget driver
- * @phy: The otg phy transceiver structure for phy control.
- * @uphy: The otg phy transceiver structure for old USB phy control.
- * @plat: The platform specific configuration data. This can be removed once
- * all SoCs support usb transceiver.
- * @regs: The memory area mapped for accessing registers.
- * @irq: The IRQ number we are using
- * @supplies: Definition of USB power supplies
- * @phyif: PHY interface width
- * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
- * @num_of_eps: Number of available EPs (excluding EP0)
- * @debug_root: root directrory for debugfs.
- * @debug_file: main status file for debugfs.
- * @debug_fifo: FIFO status file for debugfs.
- * @ep0_reply: Request used for ep0 reply.
- * @ep0_buff: Buffer for EP0 reply data, if needed.
- * @ctrl_buff: Buffer for EP0 control requests.
- * @ctrl_req: Request for EP0 control packets.
- * @setup: NAK management for EP0 SETUP
- * @last_rst: Time of last reset
- * @eps: The endpoints being supplied to the gadget framework
- */
-struct s3c_hsotg {
- struct device *dev;
- struct usb_gadget_driver *driver;
- struct phy *phy;
- struct usb_phy *uphy;
- struct s3c_hsotg_plat *plat;
-
- spinlock_t lock;
-
- void __iomem *regs;
- int irq;
- struct clk *clk;
-
- struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)];
-
- u32 phyif;
- int fifo_mem;
- unsigned int dedicated_fifos:1;
- unsigned char num_of_eps;
- u32 fifo_map;
-
- struct dentry *debug_root;
- struct dentry *debug_file;
- struct dentry *debug_fifo;
-
- struct usb_request *ep0_reply;
- struct usb_request *ctrl_req;
- u8 ep0_buff[8];
- u8 ctrl_buff[8];
-
- struct usb_gadget gadget;
- unsigned int setup;
- unsigned long last_rst;
- struct s3c_hsotg_ep *eps;
-};
-
-/**
* struct s3c_hsotg_req - data transfer request
* @req: The USB gadget request
* @queue: The list of requests for the endpoint this is queued for.
@@ -229,6 +168,7 @@ struct s3c_hsotg_req {
unsigned char mapped;
};
+#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
#define call_gadget(_hs, _entry) \
do { \
if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \
@@ -238,6 +178,9 @@ do { \
spin_lock(&_hs->lock); \
} \
} while (0)
+#else
+#define call_gadget(_hs, _entry) do {} while (0)
+#endif
struct dwc2_hsotg;
struct dwc2_host_chan;
@@ -495,11 +438,13 @@ struct dwc2_hw_params {
* struct dwc2_hsotg - Holds the state of the driver, including the non-periodic
* and periodic schedules
*
+ * These are common for both host and peripheral modes:
+ *
* @dev: The struct device pointer
* @regs: Pointer to controller regs
- * @core_params: Parameters that define how the core should be configured
* @hw_params: Parameters that were autodetected from the
* hardware registers
+ * @core_params: Parameters that define how the core should be configured
* @op_state: The operational State, during transitions (a_host=>
* a_peripheral and b_device=>b_host) this may not match
* the core, but allows the software to determine
@@ -508,6 +453,8 @@ struct dwc2_hw_params {
* - USB_DR_MODE_PERIPHERAL
* - USB_DR_MODE_HOST
* - USB_DR_MODE_OTG
+ * @lock: Spinlock that protects all the driver data structures
+ * @priv: Stores a pointer to the struct usb_hcd
* @queuing_high_bandwidth: True if multiple packets of a high-bandwidth
* transfer are in process of being queued
* @srp_success: Stores status of SRP request in the case of a FS PHY
@@ -517,6 +464,9 @@ struct dwc2_hw_params {
* interrupt
* @wkp_timer: Timer object for handling Wakeup Detected interrupt
* @lx_state: Lx state of connected device
+ *
+ * These are for host mode:
+ *
* @flags: Flags for handling root port state changes
* @non_periodic_sched_inactive: Inactive QHs in the non-periodic schedule.
* Transfers associated with these QHs are not currently
@@ -585,11 +535,31 @@ struct dwc2_hw_params {
* @status_buf_dma: DMA address for status_buf
* @start_work: Delayed work for handling host A-cable connection
* @reset_work: Delayed work for handling a port reset
- * @lock: Spinlock that protects all the driver data structures
- * @priv: Stores a pointer to the struct usb_hcd
* @otg_port: OTG port number
* @frame_list: Frame list
* @frame_list_dma: Frame list DMA address
+ *
+ * These are for peripheral mode:
+ *
+ * @driver: USB gadget driver
+ * @phy: The otg phy transceiver structure for phy control.
+ * @uphy: The otg phy transceiver structure for old USB phy control.
+ * @plat: The platform specific configuration data. This can be removed once
+ * all SoCs support usb transceiver.
+ * @supplies: Definition of USB power supplies
+ * @phyif: PHY interface width
+ * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
+ * @num_of_eps: Number of available EPs (excluding EP0)
+ * @debug_root: Root directrory for debugfs.
+ * @debug_file: Main status file for debugfs.
+ * @debug_fifo: FIFO status file for debugfs.
+ * @ep0_reply: Request used for ep0 reply.
+ * @ep0_buff: Buffer for EP0 reply data, if needed.
+ * @ctrl_buff: Buffer for EP0 control requests.
+ * @ctrl_req: Request for EP0 control packets.
+ * @setup: NAK management for EP0 SETUP
+ * @last_rst: Time of last reset
+ * @eps: The endpoints being supplied to the gadget framework
*/
struct dwc2_hsotg {
struct device *dev;
@@ -601,6 +571,16 @@ struct dwc2_hsotg {
enum usb_otg_state op_state;
enum usb_dr_mode dr_mode;
+ struct phy *phy;
+ struct usb_phy *uphy;
+ struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)];
+
+ spinlock_t lock;
+ struct mutex init_mutex;
+ void *priv;
+ int irq;
+ struct clk *clk;
+
unsigned int queuing_high_bandwidth:1;
unsigned int srp_success:1;
@@ -609,6 +589,18 @@ struct dwc2_hsotg {
struct timer_list wkp_timer;
enum dwc2_lx_state lx_state;
+ struct dentry *debug_root;
+ struct dentry *debug_file;
+ struct dentry *debug_fifo;
+
+ /* DWC OTG HW Release versions */
+#define DWC2_CORE_REV_2_71a 0x4f54271a
+#define DWC2_CORE_REV_2_90a 0x4f54290a
+#define DWC2_CORE_REV_2_92a 0x4f54292a
+#define DWC2_CORE_REV_2_94a 0x4f54294a
+#define DWC2_CORE_REV_3_00a 0x4f54300a
+
+#if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
union dwc2_hcd_internal_flags {
u32 d32;
struct {
@@ -655,19 +647,10 @@ struct dwc2_hsotg {
struct delayed_work start_work;
struct delayed_work reset_work;
- spinlock_t lock;
- void *priv;
u8 otg_port;
u32 *frame_list;
dma_addr_t frame_list_dma;
- /* DWC OTG HW Release versions */
-#define DWC2_CORE_REV_2_71a 0x4f54271a
-#define DWC2_CORE_REV_2_90a 0x4f54290a
-#define DWC2_CORE_REV_2_92a 0x4f54292a
-#define DWC2_CORE_REV_2_94a 0x4f54294a
-#define DWC2_CORE_REV_3_00a 0x4f54300a
-
#ifdef DEBUG
u32 frrem_samples;
u64 frrem_accum;
@@ -686,6 +669,31 @@ struct dwc2_hsotg {
u32 hfnum_other_samples_b;
u64 hfnum_other_frrem_accum_b;
#endif
+#endif /* CONFIG_USB_DWC2_HOST || CONFIG_USB_DWC2_DUAL_ROLE */
+
+#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
+ /* Gadget structures */
+ struct usb_gadget_driver *driver;
+ struct s3c_hsotg_plat *plat;
+
+ u32 phyif;
+ int fifo_mem;
+ unsigned int dedicated_fifos:1;
+ unsigned char num_of_eps;
+ u32 fifo_map;
+
+ struct usb_request *ep0_reply;
+ struct usb_request *ctrl_req;
+ u8 ep0_buff[8];
+ u8 ctrl_buff[8];
+
+ struct usb_gadget gadget;
+ unsigned int enabled:1;
+ unsigned int connected:1;
+ unsigned int setup:1;
+ unsigned long last_rst;
+ struct s3c_hsotg_ep *eps;
+#endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */
};
/* Reasons for halting a host channel */
@@ -955,4 +963,43 @@ extern void dwc2_dump_global_registers(struct dwc2_hsotg *hsotg);
*/
extern u16 dwc2_get_otg_version(struct dwc2_hsotg *hsotg);
+/* Gadget defines */
+#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
+extern int s3c_hsotg_remove(struct dwc2_hsotg *hsotg);
+extern int s3c_hsotg_suspend(struct dwc2_hsotg *dwc2);
+extern int s3c_hsotg_resume(struct dwc2_hsotg *dwc2);
+extern int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq);
+extern void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2);
+extern void s3c_hsotg_core_connect(struct dwc2_hsotg *hsotg);
+extern void s3c_hsotg_disconnect(struct dwc2_hsotg *dwc2);
+#else
+static inline int s3c_hsotg_remove(struct dwc2_hsotg *dwc2)
+{ return 0; }
+static inline int s3c_hsotg_suspend(struct dwc2_hsotg *dwc2)
+{ return 0; }
+static inline int s3c_hsotg_resume(struct dwc2_hsotg *dwc2)
+{ return 0; }
+static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
+{ return 0; }
+static inline void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *dwc2) {}
+static inline void s3c_hsotg_core_connect(struct dwc2_hsotg *hsotg) {}
+static inline void s3c_hsotg_disconnect(struct dwc2_hsotg *dwc2) {}
+#endif
+
+#if IS_ENABLED(CONFIG_USB_DWC2_HOST) || IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
+extern int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg);
+extern void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg);
+extern void dwc2_hcd_start(struct dwc2_hsotg *hsotg);
+#else
+static inline void dwc2_set_all_params(struct dwc2_core_params *params, int value) {}
+static inline int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg)
+{ return 0; }
+static inline void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg) {}
+static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {}
+static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {}
+static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
+ const struct dwc2_core_params *params)
+{ return 0; }
+#endif
+
#endif /* __DWC2_CORE_H__ */
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index c93918b70d03..ad43c5bc1ef1 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -128,6 +128,9 @@ static void dwc2_handle_otg_intr(struct dwc2_hsotg *hsotg)
dwc2_op_state_str(hsotg));
gotgctl = readl(hsotg->regs + GOTGCTL);
+ if (dwc2_is_device_mode(hsotg))
+ s3c_hsotg_disconnect(hsotg);
+
if (hsotg->op_state == OTG_STATE_B_HOST) {
hsotg->op_state = OTG_STATE_B_PERIPHERAL;
} else {
@@ -287,9 +290,11 @@ static void dwc2_handle_conn_id_status_change_intr(struct dwc2_hsotg *hsotg)
* Release lock before scheduling workq as it holds spinlock during
* scheduling.
*/
- spin_unlock(&hsotg->lock);
- queue_work(hsotg->wq_otg, &hsotg->wf_otg);
- spin_lock(&hsotg->lock);
+ if (hsotg->wq_otg) {
+ spin_unlock(&hsotg->lock);
+ queue_work(hsotg->wq_otg, &hsotg->wf_otg);
+ spin_lock(&hsotg->lock);
+ }
/* Clear interrupt */
writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS);
@@ -312,6 +317,12 @@ static void dwc2_handle_session_req_intr(struct dwc2_hsotg *hsotg)
/* Clear interrupt */
writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS);
+
+ /*
+ * Report disconnect if there is any previous session established
+ */
+ if (dwc2_is_device_mode(hsotg))
+ s3c_hsotg_disconnect(hsotg);
}
/*
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 8b5c079c7b7d..200168ec2d75 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -21,6 +21,7 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/debugfs.h>
+#include <linux/mutex.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/io.h>
@@ -36,6 +37,7 @@
#include <linux/platform_data/s3c-hsotg.h>
#include "core.h"
+#include "hw.h"
/* conversion functions */
static inline struct s3c_hsotg_req *our_req(struct usb_request *req)
@@ -48,9 +50,9 @@ static inline struct s3c_hsotg_ep *our_ep(struct usb_ep *ep)
return container_of(ep, struct s3c_hsotg_ep, ep);
}
-static inline struct s3c_hsotg *to_hsotg(struct usb_gadget *gadget)
+static inline struct dwc2_hsotg *to_hsotg(struct usb_gadget *gadget)
{
- return container_of(gadget, struct s3c_hsotg, gadget);
+ return container_of(gadget, struct dwc2_hsotg, gadget);
}
static inline void __orr32(void __iomem *ptr, u32 val)
@@ -64,7 +66,7 @@ static inline void __bic32(void __iomem *ptr, u32 val)
}
/* forward decleration of functions */
-static void s3c_hsotg_dump(struct s3c_hsotg *hsotg);
+static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg);
/**
* using_dma - return the DMA status of the driver.
@@ -85,7 +87,7 @@ static void s3c_hsotg_dump(struct s3c_hsotg *hsotg);
*
* Until this issue is sorted out, we always return 'false'.
*/
-static inline bool using_dma(struct s3c_hsotg *hsotg)
+static inline bool using_dma(struct dwc2_hsotg *hsotg)
{
return false; /* support is not complete */
}
@@ -95,7 +97,7 @@ static inline bool using_dma(struct s3c_hsotg *hsotg)
* @hsotg: The device state
* @ints: A bitmask of the interrupts to enable
*/
-static void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints)
+static void s3c_hsotg_en_gsint(struct dwc2_hsotg *hsotg, u32 ints)
{
u32 gsintmsk = readl(hsotg->regs + GINTMSK);
u32 new_gsintmsk;
@@ -113,7 +115,7 @@ static void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints)
* @hsotg: The device state
* @ints: A bitmask of the interrupts to enable
*/
-static void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints)
+static void s3c_hsotg_disable_gsint(struct dwc2_hsotg *hsotg, u32 ints)
{
u32 gsintmsk = readl(hsotg->regs + GINTMSK);
u32 new_gsintmsk;
@@ -134,7 +136,7 @@ static void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints)
* Set or clear the mask for an individual endpoint's interrupt
* request.
*/
-static void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_ctrl_epint(struct dwc2_hsotg *hsotg,
unsigned int ep, unsigned int dir_in,
unsigned int en)
{
@@ -159,7 +161,7 @@ static void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg,
* s3c_hsotg_init_fifo - initialise non-periodic FIFOs
* @hsotg: The device instance.
*/
-static void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_init_fifo(struct dwc2_hsotg *hsotg)
{
unsigned int ep;
unsigned int addr;
@@ -283,7 +285,7 @@ static inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep)
* This is the reverse of s3c_hsotg_map_dma(), called for the completion
* of a request to ensure the buffer is ready for access by the caller.
*/
-static void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_unmap_dma(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
struct s3c_hsotg_req *hs_req)
{
@@ -312,7 +314,7 @@ static void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg,
*
* This routine is only needed for PIO
*/
-static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
+static int s3c_hsotg_write_fifo(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
struct s3c_hsotg_req *hs_req)
{
@@ -517,7 +519,7 @@ static unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep)
* Start the given request running by setting the endpoint registers
* appropriately, and writing any data to the FIFOs.
*/
-static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_start_req(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
struct s3c_hsotg_req *hs_req,
bool continuing)
@@ -707,7 +709,7 @@ static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg,
* DMA memory, then we map the memory and mark our request to allow us to
* cleanup on completion.
*/
-static int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg,
+static int s3c_hsotg_map_dma(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
struct usb_request *req)
{
@@ -736,7 +738,7 @@ static int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req,
{
struct s3c_hsotg_req *hs_req = our_req(req);
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hs = hs_ep->parent;
+ struct dwc2_hsotg *hs = hs_ep->parent;
bool first;
dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n",
@@ -768,7 +770,7 @@ static int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req,
gfp_t gfp_flags)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hs = hs_ep->parent;
+ struct dwc2_hsotg *hs = hs_ep->parent;
unsigned long flags = 0;
int ret = 0;
@@ -799,7 +801,7 @@ static void s3c_hsotg_complete_oursetup(struct usb_ep *ep,
struct usb_request *req)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hsotg = hs_ep->parent;
+ struct dwc2_hsotg *hsotg = hs_ep->parent;
dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req);
@@ -814,7 +816,7 @@ static void s3c_hsotg_complete_oursetup(struct usb_ep *ep,
* Convert the given wIndex into a pointer to an driver endpoint
* structure, or return NULL if it is not a valid endpoint.
*/
-static struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg,
+static struct s3c_hsotg_ep *ep_from_windex(struct dwc2_hsotg *hsotg,
u32 windex)
{
struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F];
@@ -843,7 +845,7 @@ static struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg,
* Create a request and queue it on the given endpoint. This is useful as
* an internal method of sending replies to certain control requests, etc.
*/
-static int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg,
+static int s3c_hsotg_send_reply(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *ep,
void *buff,
int length)
@@ -884,7 +886,7 @@ static int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg,
* @hsotg: The device state
* @ctrl: USB control request
*/
-static int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg,
+static int s3c_hsotg_process_req_status(struct dwc2_hsotg *hsotg,
struct usb_ctrlrequest *ctrl)
{
struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
@@ -955,7 +957,7 @@ static struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep)
* @hsotg: The device state
* @ctrl: USB control request
*/
-static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg,
+static int s3c_hsotg_process_req_feature(struct dwc2_hsotg *hsotg,
struct usb_ctrlrequest *ctrl)
{
struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
@@ -1028,8 +1030,7 @@ static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg,
return 1;
}
-static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg);
-static void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg);
+static void s3c_hsotg_enqueue_setup(struct dwc2_hsotg *hsotg);
/**
* s3c_hsotg_stall_ep0 - stall ep0
@@ -1037,7 +1038,7 @@ static void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg);
*
* Set stall for ep0 as response for setup request.
*/
-static void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_stall_ep0(struct dwc2_hsotg *hsotg)
{
struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
u32 reg;
@@ -1076,7 +1077,7 @@ static void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg)
* needs to work out what to do next (and whether to pass it on to the
* gadget driver).
*/
-static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_process_control(struct dwc2_hsotg *hsotg,
struct usb_ctrlrequest *ctrl)
{
struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
@@ -1107,7 +1108,6 @@ static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg,
if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
switch (ctrl->bRequest) {
case USB_REQ_SET_ADDRESS:
- s3c_hsotg_disconnect(hsotg);
dcfg = readl(hsotg->regs + DCFG);
dcfg &= ~DCFG_DEVADDR_MASK;
dcfg |= (le16_to_cpu(ctrl->wValue) <<
@@ -1161,7 +1161,7 @@ static void s3c_hsotg_complete_setup(struct usb_ep *ep,
struct usb_request *req)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hsotg = hs_ep->parent;
+ struct dwc2_hsotg *hsotg = hs_ep->parent;
if (req->status < 0) {
dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status);
@@ -1183,7 +1183,7 @@ static void s3c_hsotg_complete_setup(struct usb_ep *ep,
* Enqueue a request on EP0 if necessary to received any SETUP packets
* received from the host.
*/
-static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_enqueue_setup(struct dwc2_hsotg *hsotg)
{
struct usb_request *req = hsotg->ctrl_req;
struct s3c_hsotg_req *hs_req = our_req(req);
@@ -1226,7 +1226,7 @@ static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg)
*
* Note, expects the ep to already be locked as appropriate.
*/
-static void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_complete_request(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
struct s3c_hsotg_req *hs_req,
int result)
@@ -1291,7 +1291,7 @@ static void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg,
* endpoint, so sort out whether we need to read the data into a request
* that has been made for that endpoint.
*/
-static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size)
+static void s3c_hsotg_rx_data(struct dwc2_hsotg *hsotg, int ep_idx, int size)
{
struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx];
struct s3c_hsotg_req *hs_req = hs_ep->req;
@@ -1356,7 +1356,7 @@ static void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size)
* currently believed that we do not need to wait for any space in
* the TxFIFO.
*/
-static void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_send_zlp(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_req *req)
{
u32 ctrl;
@@ -1398,7 +1398,7 @@ static void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg,
* transfer for an OUT endpoint has been completed, either by a short
* packet or by the finish of a transfer.
*/
-static void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg,
int epnum, bool was_setup)
{
u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum));
@@ -1471,7 +1471,7 @@ static void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg,
*
* Return the current frame number
*/
-static u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg)
+static u32 s3c_hsotg_read_frameno(struct dwc2_hsotg *hsotg)
{
u32 dsts;
@@ -1498,7 +1498,7 @@ static u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg)
* as the actual data should be sent to the memory directly and we turn
* on the completion interrupts to get notifications of transfer completion.
*/
-static void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_handle_rx(struct dwc2_hsotg *hsotg)
{
u32 grxstsr = readl(hsotg->regs + GRXSTSP);
u32 epnum, status, size;
@@ -1590,7 +1590,7 @@ static u32 s3c_hsotg_ep0_mps(unsigned int mps)
* Configure the maximum packet size for the given endpoint, updating
* the hardware control registers to reflect this.
*/
-static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_set_ep_maxpacket(struct dwc2_hsotg *hsotg,
unsigned int ep, unsigned int mps)
{
struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep];
@@ -1645,7 +1645,7 @@ bad_mps:
* @hsotg: The driver state
* @idx: The index for the endpoint (0..15)
*/
-static void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx)
+static void s3c_hsotg_txfifo_flush(struct dwc2_hsotg *hsotg, unsigned int idx)
{
int timeout;
int val;
@@ -1681,7 +1681,7 @@ static void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx)
* Check to see if there is a request that has data to send, and if so
* make an attempt to write data into the FIFO.
*/
-static int s3c_hsotg_trytx(struct s3c_hsotg *hsotg,
+static int s3c_hsotg_trytx(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep)
{
struct s3c_hsotg_req *hs_req = hs_ep->req;
@@ -1714,7 +1714,7 @@ static int s3c_hsotg_trytx(struct s3c_hsotg *hsotg,
* An IN transfer has been completed, update the transfer's state and then
* call the relevant completion routines.
*/
-static void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_complete_in(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep)
{
struct s3c_hsotg_req *hs_req = hs_ep->req;
@@ -1791,7 +1791,7 @@ static void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg,
*
* Process and clear any interrupt pending for an individual endpoint
*/
-static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
+static void s3c_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx,
int dir_in)
{
struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx];
@@ -1916,7 +1916,7 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
* Handle updating the device settings after the enumeration phase has
* been completed.
*/
-static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_irq_enumdone(struct dwc2_hsotg *hsotg)
{
u32 dsts = readl(hsotg->regs + DSTS);
int ep0_mps = 0, ep_mps = 8;
@@ -1993,7 +1993,7 @@ static void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg)
* Go through the requests on the given endpoint and mark them
* completed with the given result code.
*/
-static void kill_all_requests(struct s3c_hsotg *hsotg,
+static void kill_all_requests(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *ep,
int result, bool force)
{
@@ -2027,22 +2027,27 @@ static void kill_all_requests(struct s3c_hsotg *hsotg,
* transactions and signal the gadget driver that this
* has happened.
*/
-static void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg)
+void s3c_hsotg_disconnect(struct dwc2_hsotg *hsotg)
{
unsigned ep;
+ if (!hsotg->connected)
+ return;
+
+ hsotg->connected = 0;
for (ep = 0; ep < hsotg->num_of_eps; ep++)
kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true);
call_gadget(hsotg, disconnect);
}
+EXPORT_SYMBOL_GPL(s3c_hsotg_disconnect);
/**
* s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler
* @hsotg: The device state:
* @periodic: True if this is a periodic FIFO interrupt
*/
-static void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic)
+static void s3c_hsotg_irq_fifoempty(struct dwc2_hsotg *hsotg, bool periodic)
{
struct s3c_hsotg_ep *ep;
int epno, ret;
@@ -2076,7 +2081,7 @@ static void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic)
*
* Issue a soft reset to the core, and await the core finishing it.
*/
-static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg)
+static int s3c_hsotg_corereset(struct dwc2_hsotg *hsotg)
{
int timeout;
u32 grstctl;
@@ -2124,7 +2129,7 @@ static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg)
*
* Issue a soft reset to the core, and await the core finishing it.
*/
-static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg)
+void s3c_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg)
{
s3c_hsotg_corereset(hsotg);
@@ -2241,12 +2246,23 @@ static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg)
readl(hsotg->regs + DOEPCTL0));
/* clear global NAKs */
- writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK,
+ writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK | DCTL_SFTDISCON,
hsotg->regs + DCTL);
/* must be at-least 3ms to allow bus to see disconnect */
mdelay(3);
+ hsotg->last_rst = jiffies;
+}
+
+static void s3c_hsotg_core_disconnect(struct dwc2_hsotg *hsotg)
+{
+ /* set the soft-disconnect bit */
+ __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON);
+}
+
+void s3c_hsotg_core_connect(struct dwc2_hsotg *hsotg)
+{
/* remove the soft-disconnect and let's go */
__bic32(hsotg->regs + DCTL, DCTL_SFTDISCON);
}
@@ -2258,7 +2274,7 @@ static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg)
*/
static irqreturn_t s3c_hsotg_irq(int irq, void *pw)
{
- struct s3c_hsotg *hsotg = pw;
+ struct dwc2_hsotg *hsotg = pw;
int retry_count = 8;
u32 gintsts;
u32 gintmsk;
@@ -2273,31 +2289,11 @@ irq_retry:
gintsts &= gintmsk;
- if (gintsts & GINTSTS_OTGINT) {
- u32 otgint = readl(hsotg->regs + GOTGINT);
-
- dev_info(hsotg->dev, "OTGInt: %08x\n", otgint);
-
- writel(otgint, hsotg->regs + GOTGINT);
- }
-
- if (gintsts & GINTSTS_SESSREQINT) {
- dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__);
- writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS);
- }
-
if (gintsts & GINTSTS_ENUMDONE) {
writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS);
s3c_hsotg_irq_enumdone(hsotg);
- }
-
- if (gintsts & GINTSTS_CONIDSTSCHNG) {
- dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n",
- readl(hsotg->regs + DSTS),
- readl(hsotg->regs + GOTGCTL));
-
- writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS);
+ hsotg->connected = 1;
}
if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) {
@@ -2340,8 +2336,8 @@ irq_retry:
kill_all_requests(hsotg, &hsotg->eps[0],
-ECONNRESET, true);
- s3c_hsotg_core_init(hsotg);
- hsotg->last_rst = jiffies;
+ s3c_hsotg_core_init_disconnected(hsotg);
+ s3c_hsotg_core_connect(hsotg);
}
}
}
@@ -2380,25 +2376,6 @@ irq_retry:
s3c_hsotg_handle_rx(hsotg);
}
- if (gintsts & GINTSTS_MODEMIS) {
- dev_warn(hsotg->dev, "warning, mode mismatch triggered\n");
- writel(GINTSTS_MODEMIS, hsotg->regs + GINTSTS);
- }
-
- if (gintsts & GINTSTS_USBSUSP) {
- dev_info(hsotg->dev, "GINTSTS_USBSusp\n");
- writel(GINTSTS_USBSUSP, hsotg->regs + GINTSTS);
-
- call_gadget(hsotg, suspend);
- }
-
- if (gintsts & GINTSTS_WKUPINT) {
- dev_info(hsotg->dev, "GINTSTS_WkUpIn\n");
- writel(GINTSTS_WKUPINT, hsotg->regs + GINTSTS);
-
- call_gadget(hsotg, resume);
- }
-
if (gintsts & GINTSTS_ERLYSUSP) {
dev_dbg(hsotg->dev, "GINTSTS_ErlySusp\n");
writel(GINTSTS_ERLYSUSP, hsotg->regs + GINTSTS);
@@ -2450,7 +2427,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
const struct usb_endpoint_descriptor *desc)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hsotg = hs_ep->parent;
+ struct dwc2_hsotg *hsotg = hs_ep->parent;
unsigned long flags;
int index = hs_ep->index;
u32 epctrl_reg;
@@ -2593,7 +2570,7 @@ error:
static int s3c_hsotg_ep_disable(struct usb_ep *ep)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hsotg = hs_ep->parent;
+ struct dwc2_hsotg *hsotg = hs_ep->parent;
int dir_in = hs_ep->dir_in;
int index = hs_ep->index;
unsigned long flags;
@@ -2658,7 +2635,7 @@ static int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
{
struct s3c_hsotg_req *hs_req = our_req(req);
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hs = hs_ep->parent;
+ struct dwc2_hsotg *hs = hs_ep->parent;
unsigned long flags;
dev_dbg(hs->dev, "ep_dequeue(%p,%p)\n", ep, req);
@@ -2684,7 +2661,7 @@ static int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req)
static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hs = hs_ep->parent;
+ struct dwc2_hsotg *hs = hs_ep->parent;
int index = hs_ep->index;
u32 epreg;
u32 epctl;
@@ -2748,7 +2725,7 @@ static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value)
static int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value)
{
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
- struct s3c_hsotg *hs = hs_ep->parent;
+ struct dwc2_hsotg *hs = hs_ep->parent;
unsigned long flags = 0;
int ret = 0;
@@ -2777,7 +2754,7 @@ static struct usb_ep_ops s3c_hsotg_ep_ops = {
* A wrapper for platform code responsible for controlling
* low-level USB code
*/
-static void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_phy_enable(struct dwc2_hsotg *hsotg)
{
struct platform_device *pdev = to_platform_device(hsotg->dev);
@@ -2800,7 +2777,7 @@ static void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg)
* A wrapper for platform code responsible for controlling
* low-level USB code
*/
-static void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_phy_disable(struct dwc2_hsotg *hsotg)
{
struct platform_device *pdev = to_platform_device(hsotg->dev);
@@ -2818,7 +2795,7 @@ static void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg)
* s3c_hsotg_init - initalize the usb core
* @hsotg: The driver state
*/
-static void s3c_hsotg_init(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_init(struct dwc2_hsotg *hsotg)
{
/* unmask subset of endpoint interrupts */
@@ -2868,7 +2845,8 @@ static void s3c_hsotg_init(struct s3c_hsotg *hsotg)
static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver)
{
- struct s3c_hsotg *hsotg = to_hsotg(gadget);
+ struct dwc2_hsotg *hsotg = to_hsotg(gadget);
+ unsigned long flags;
int ret;
if (!hsotg) {
@@ -2889,6 +2867,7 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
return -EINVAL;
}
+ mutex_lock(&hsotg->init_mutex);
WARN_ON(hsotg->driver);
driver->driver.bus = NULL;
@@ -2905,11 +2884,22 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
goto err;
}
- hsotg->last_rst = jiffies;
+ s3c_hsotg_phy_enable(hsotg);
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ s3c_hsotg_init(hsotg);
+ s3c_hsotg_core_init_disconnected(hsotg);
+ hsotg->enabled = 0;
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name);
+
+ mutex_unlock(&hsotg->init_mutex);
+
return 0;
err:
+ mutex_unlock(&hsotg->init_mutex);
hsotg->driver = NULL;
return ret;
}
@@ -2921,16 +2911,17 @@ err:
*
* Stop udc hw block and stay tunned for future transmissions
*/
-static int s3c_hsotg_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int s3c_hsotg_udc_stop(struct usb_gadget *gadget)
{
- struct s3c_hsotg *hsotg = to_hsotg(gadget);
+ struct dwc2_hsotg *hsotg = to_hsotg(gadget);
unsigned long flags = 0;
int ep;
if (!hsotg)
return -ENODEV;
+ mutex_lock(&hsotg->init_mutex);
+
/* all endpoints should be shutdown */
for (ep = 1; ep < hsotg->num_of_eps; ep++)
s3c_hsotg_ep_disable(&hsotg->eps[ep].ep);
@@ -2939,13 +2930,18 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget,
hsotg->driver = NULL;
hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ hsotg->enabled = 0;
spin_unlock_irqrestore(&hsotg->lock, flags);
+ s3c_hsotg_phy_disable(hsotg);
+
regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
clk_disable(hsotg->clk);
+ mutex_unlock(&hsotg->init_mutex);
+
return 0;
}
@@ -2969,23 +2965,26 @@ static int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget)
*/
static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on)
{
- struct s3c_hsotg *hsotg = to_hsotg(gadget);
+ struct dwc2_hsotg *hsotg = to_hsotg(gadget);
unsigned long flags = 0;
dev_dbg(hsotg->dev, "%s: is_on: %d\n", __func__, is_on);
+ mutex_lock(&hsotg->init_mutex);
spin_lock_irqsave(&hsotg->lock, flags);
if (is_on) {
- s3c_hsotg_phy_enable(hsotg);
clk_enable(hsotg->clk);
- s3c_hsotg_core_init(hsotg);
+ hsotg->enabled = 1;
+ s3c_hsotg_core_connect(hsotg);
} else {
+ s3c_hsotg_core_disconnect(hsotg);
+ hsotg->enabled = 0;
clk_disable(hsotg->clk);
- s3c_hsotg_phy_disable(hsotg);
}
hsotg->gadget.speed = USB_SPEED_UNKNOWN;
spin_unlock_irqrestore(&hsotg->lock, flags);
+ mutex_unlock(&hsotg->init_mutex);
return 0;
}
@@ -3007,7 +3006,7 @@ static const struct usb_gadget_ops s3c_hsotg_gadget_ops = {
* creation) to give to the gadget driver. Setup the endpoint name, any
* direction information and other state that may be required.
*/
-static void s3c_hsotg_initep(struct s3c_hsotg *hsotg,
+static void s3c_hsotg_initep(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
int epnum)
{
@@ -3056,7 +3055,7 @@ static void s3c_hsotg_initep(struct s3c_hsotg *hsotg,
*
* Read the USB core HW configuration registers
*/
-static void s3c_hsotg_hw_cfg(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_hw_cfg(struct dwc2_hsotg *hsotg)
{
u32 cfg2, cfg3, cfg4;
/* check hardware configuration */
@@ -3080,7 +3079,7 @@ static void s3c_hsotg_hw_cfg(struct s3c_hsotg *hsotg)
* s3c_hsotg_dump - dump state of the udc
* @param: The device state
*/
-static void s3c_hsotg_dump(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg)
{
#ifdef DEBUG
struct device *dev = hsotg->dev;
@@ -3139,7 +3138,7 @@ static void s3c_hsotg_dump(struct s3c_hsotg *hsotg)
*/
static int state_show(struct seq_file *seq, void *v)
{
- struct s3c_hsotg *hsotg = seq->private;
+ struct dwc2_hsotg *hsotg = seq->private;
void __iomem *regs = hsotg->regs;
int idx;
@@ -3209,7 +3208,7 @@ static const struct file_operations state_fops = {
*/
static int fifo_show(struct seq_file *seq, void *v)
{
- struct s3c_hsotg *hsotg = seq->private;
+ struct dwc2_hsotg *hsotg = seq->private;
void __iomem *regs = hsotg->regs;
u32 val;
int idx;
@@ -3265,7 +3264,7 @@ static const char *decode_direction(int is_in)
static int ep_show(struct seq_file *seq, void *v)
{
struct s3c_hsotg_ep *ep = seq->private;
- struct s3c_hsotg *hsotg = ep->parent;
+ struct dwc2_hsotg *hsotg = ep->parent;
struct s3c_hsotg_req *req;
void __iomem *regs = hsotg->regs;
int index = ep->index;
@@ -3342,7 +3341,7 @@ static const struct file_operations ep_fops = {
* with the same name as the device itself, in case we end up
* with multiple blocks in future systems.
*/
-static void s3c_hsotg_create_debug(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_create_debug(struct dwc2_hsotg *hsotg)
{
struct dentry *root;
unsigned epidx;
@@ -3388,7 +3387,7 @@ static void s3c_hsotg_create_debug(struct s3c_hsotg *hsotg)
*
* Cleanup (remove) the debugfs files for use on module exit.
*/
-static void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg)
+static void s3c_hsotg_delete_debug(struct dwc2_hsotg *hsotg)
{
unsigned epidx;
@@ -3403,27 +3402,21 @@ static void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg)
}
/**
- * s3c_hsotg_probe - probe function for hsotg driver
- * @pdev: The platform information for the driver
+ * dwc2_gadget_init - init function for gadget
+ * @dwc2: The data structure for the DWC2 driver.
+ * @irq: The IRQ number for the controller.
*/
-
-static int s3c_hsotg_probe(struct platform_device *pdev)
+int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
{
- struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev);
+ struct device *dev = hsotg->dev;
+ struct s3c_hsotg_plat *plat = dev->platform_data;
struct phy *phy;
struct usb_phy *uphy;
- struct device *dev = &pdev->dev;
struct s3c_hsotg_ep *eps;
- struct s3c_hsotg *hsotg;
- struct resource *res;
int epnum;
int ret;
int i;
- hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL);
- if (!hsotg)
- return -ENOMEM;
-
/* Set default UTMI width */
hsotg->phyif = GUSBCFG_PHYIF16;
@@ -3431,14 +3424,14 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
* Attempt to find a generic PHY, then look for an old style
* USB PHY, finally fall back to pdata
*/
- phy = devm_phy_get(&pdev->dev, "usb2-phy");
+ phy = devm_phy_get(dev, "usb2-phy");
if (IS_ERR(phy)) {
uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
if (IS_ERR(uphy)) {
/* Fallback for pdata */
- plat = dev_get_platdata(&pdev->dev);
+ plat = dev_get_platdata(dev);
if (!plat) {
- dev_err(&pdev->dev,
+ dev_err(dev,
"no platform data or transceiver defined\n");
return -EPROBE_DEFER;
}
@@ -3455,43 +3448,24 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
hsotg->phyif = GUSBCFG_PHYIF8;
}
- hsotg->dev = dev;
-
- hsotg->clk = devm_clk_get(&pdev->dev, "otg");
+ hsotg->clk = devm_clk_get(dev, "otg");
if (IS_ERR(hsotg->clk)) {
- dev_err(dev, "cannot get otg clock\n");
- return PTR_ERR(hsotg->clk);
- }
-
- platform_set_drvdata(pdev, hsotg);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
- hsotg->regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(hsotg->regs)) {
- ret = PTR_ERR(hsotg->regs);
- goto err_clk;
+ hsotg->clk = NULL;
+ dev_dbg(dev, "cannot get otg clock\n");
}
- ret = platform_get_irq(pdev, 0);
- if (ret < 0) {
- dev_err(dev, "cannot find IRQ\n");
- goto err_clk;
- }
-
- spin_lock_init(&hsotg->lock);
-
- hsotg->irq = ret;
-
- dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq);
-
hsotg->gadget.max_speed = USB_SPEED_HIGH;
hsotg->gadget.ops = &s3c_hsotg_gadget_ops;
hsotg->gadget.name = dev_name(dev);
/* reset the system */
- clk_prepare_enable(hsotg->clk);
+ ret = clk_prepare_enable(hsotg->clk);
+ if (ret) {
+ dev_err(dev, "failed to enable otg clk\n");
+ goto err_clk;
+ }
+
/* regulators */
@@ -3509,7 +3483,7 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
hsotg->supplies);
if (ret) {
- dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret);
+ dev_err(dev, "failed to enable supplies: %d\n", ret);
goto err_supplies;
}
@@ -3520,14 +3494,14 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
s3c_hsotg_hw_cfg(hsotg);
s3c_hsotg_init(hsotg);
- ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0,
- dev_name(dev), hsotg);
+ ret = devm_request_irq(hsotg->dev, irq, s3c_hsotg_irq, IRQF_SHARED,
+ dev_name(hsotg->dev), hsotg);
if (ret < 0) {
s3c_hsotg_phy_disable(hsotg);
clk_disable_unprepare(hsotg->clk);
regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
- dev_err(dev, "cannot claim IRQ\n");
+ dev_err(dev, "cannot claim IRQ for gadget\n");
goto err_clk;
}
@@ -3573,11 +3547,11 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
if (ret) {
- dev_err(hsotg->dev, "failed to disable supplies: %d\n", ret);
+ dev_err(dev, "failed to disable supplies: %d\n", ret);
goto err_ep_mem;
}
- ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget);
+ ret = usb_add_gadget_udc(dev, &hsotg->gadget);
if (ret)
goto err_ep_mem;
@@ -3596,47 +3570,44 @@ err_clk:
return ret;
}
+EXPORT_SYMBOL_GPL(dwc2_gadget_init);
/**
* s3c_hsotg_remove - remove function for hsotg driver
* @pdev: The platform information for the driver
*/
-static int s3c_hsotg_remove(struct platform_device *pdev)
+int s3c_hsotg_remove(struct dwc2_hsotg *hsotg)
{
- struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
-
usb_del_gadget_udc(&hsotg->gadget);
-
s3c_hsotg_delete_debug(hsotg);
-
- if (hsotg->driver) {
- /* should have been done already by driver model core */
- usb_gadget_unregister_driver(hsotg->driver);
- }
-
clk_disable_unprepare(hsotg->clk);
return 0;
}
+EXPORT_SYMBOL_GPL(s3c_hsotg_remove);
-static int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state)
+int s3c_hsotg_suspend(struct dwc2_hsotg *hsotg)
{
- struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
unsigned long flags;
int ret = 0;
- if (hsotg->driver)
+ mutex_lock(&hsotg->init_mutex);
+
+ if (hsotg->driver) {
+ int ep;
+
dev_info(hsotg->dev, "suspending usb gadget %s\n",
hsotg->driver->driver.name);
- spin_lock_irqsave(&hsotg->lock, flags);
- s3c_hsotg_disconnect(hsotg);
- s3c_hsotg_phy_disable(hsotg);
- hsotg->gadget.speed = USB_SPEED_UNKNOWN;
- spin_unlock_irqrestore(&hsotg->lock, flags);
+ spin_lock_irqsave(&hsotg->lock, flags);
+ if (hsotg->enabled)
+ s3c_hsotg_core_disconnect(hsotg);
+ s3c_hsotg_disconnect(hsotg);
+ hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+
+ s3c_hsotg_phy_disable(hsotg);
- if (hsotg->driver) {
- int ep;
for (ep = 0; ep < hsotg->num_of_eps; ep++)
s3c_hsotg_ep_disable(&hsotg->eps[ep].ep);
@@ -3645,57 +3616,37 @@ static int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state)
clk_disable(hsotg->clk);
}
+ mutex_unlock(&hsotg->init_mutex);
+
return ret;
}
+EXPORT_SYMBOL_GPL(s3c_hsotg_suspend);
-static int s3c_hsotg_resume(struct platform_device *pdev)
+int s3c_hsotg_resume(struct dwc2_hsotg *hsotg)
{
- struct s3c_hsotg *hsotg = platform_get_drvdata(pdev);
unsigned long flags;
int ret = 0;
+ mutex_lock(&hsotg->init_mutex);
+
if (hsotg->driver) {
dev_info(hsotg->dev, "resuming usb gadget %s\n",
hsotg->driver->driver.name);
clk_enable(hsotg->clk);
ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
- hsotg->supplies);
- }
+ hsotg->supplies);
- spin_lock_irqsave(&hsotg->lock, flags);
- hsotg->last_rst = jiffies;
- s3c_hsotg_phy_enable(hsotg);
- s3c_hsotg_core_init(hsotg);
- spin_unlock_irqrestore(&hsotg->lock, flags);
+ s3c_hsotg_phy_enable(hsotg);
+
+ spin_lock_irqsave(&hsotg->lock, flags);
+ s3c_hsotg_core_init_disconnected(hsotg);
+ if (hsotg->enabled)
+ s3c_hsotg_core_connect(hsotg);
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+ }
+ mutex_unlock(&hsotg->init_mutex);
return ret;
}
-
-#ifdef CONFIG_OF
-static const struct of_device_id s3c_hsotg_of_ids[] = {
- { .compatible = "samsung,s3c6400-hsotg", },
- { .compatible = "snps,dwc2", },
- { /* sentinel */ }
-};
-MODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids);
-#endif
-
-static struct platform_driver s3c_hsotg_driver = {
- .driver = {
- .name = "s3c-hsotg",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(s3c_hsotg_of_ids),
- },
- .probe = s3c_hsotg_probe,
- .remove = s3c_hsotg_remove,
- .suspend = s3c_hsotg_suspend,
- .resume = s3c_hsotg_resume,
-};
-
-module_platform_driver(s3c_hsotg_driver);
-
-MODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device");
-MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:s3c-hsotg");
+EXPORT_SYMBOL_GPL(s3c_hsotg_resume);
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 0a0e6f0ad15f..a0cd9db6f4cd 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -1371,6 +1371,8 @@ static void dwc2_conn_id_status_change(struct work_struct *work)
hsotg->op_state = OTG_STATE_B_PERIPHERAL;
dwc2_core_init(hsotg, false, -1);
dwc2_enable_global_interrupts(hsotg);
+ s3c_hsotg_core_init_disconnected(hsotg);
+ s3c_hsotg_core_connect(hsotg);
} else {
/* A-Device connector (Host Mode) */
dev_dbg(hsotg->dev, "connId A\n");
@@ -1471,6 +1473,30 @@ static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)
}
}
+static void dwc2_port_resume(struct dwc2_hsotg *hsotg)
+{
+ u32 hprt0;
+
+ /* After clear the Stop PHY clock bit, we should wait for a moment
+ * for PLL work stable with clock output.
+ */
+ writel(0, hsotg->regs + PCGCTL);
+ usleep_range(2000, 4000);
+
+ hprt0 = dwc2_read_hprt0(hsotg);
+ hprt0 |= HPRT0_RES;
+ writel(hprt0, hsotg->regs + HPRT0);
+ hprt0 &= ~HPRT0_SUSP;
+ /* according to USB2.0 Spec 7.1.7.7, the host must send the resume
+ * signal for at least 20ms
+ */
+ usleep_range(20000, 25000);
+
+ hprt0 &= ~HPRT0_RES;
+ writel(hprt0, hsotg->regs + HPRT0);
+ hsotg->lx_state = DWC2_L0;
+}
+
/* Handles hub class-specific requests */
static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
u16 wvalue, u16 windex, char *buf, u16 wlength)
@@ -1516,17 +1542,7 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
case USB_PORT_FEAT_SUSPEND:
dev_dbg(hsotg->dev,
"ClearPortFeature USB_PORT_FEAT_SUSPEND\n");
- writel(0, hsotg->regs + PCGCTL);
- usleep_range(20000, 40000);
-
- hprt0 = dwc2_read_hprt0(hsotg);
- hprt0 |= HPRT0_RES;
- writel(hprt0, hsotg->regs + HPRT0);
- hprt0 &= ~HPRT0_SUSP;
- usleep_range(100000, 150000);
-
- hprt0 &= ~HPRT0_RES;
- writel(hprt0, hsotg->regs + HPRT0);
+ dwc2_port_resume(hsotg);
break;
case USB_PORT_FEAT_POWER:
@@ -2299,6 +2315,55 @@ static void _dwc2_hcd_stop(struct usb_hcd *hcd)
usleep_range(1000, 3000);
}
+static int _dwc2_hcd_suspend(struct usb_hcd *hcd)
+{
+ struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd);
+ u32 hprt0;
+
+ if (!((hsotg->op_state == OTG_STATE_B_HOST) ||
+ (hsotg->op_state == OTG_STATE_A_HOST)))
+ return 0;
+
+ /* TODO: We get into suspend from 'on' state, maybe we need to do
+ * something if we get here from DWC2_L1(LPM sleep) state one day.
+ */
+ if (hsotg->lx_state != DWC2_L0)
+ return 0;
+
+ hprt0 = dwc2_read_hprt0(hsotg);
+ if (hprt0 & HPRT0_CONNSTS) {
+ dwc2_port_suspend(hsotg, 1);
+ } else {
+ u32 pcgctl = readl(hsotg->regs + PCGCTL);
+
+ pcgctl |= PCGCTL_STOPPCLK;
+ writel(pcgctl, hsotg->regs + PCGCTL);
+ }
+
+ return 0;
+}
+
+static int _dwc2_hcd_resume(struct usb_hcd *hcd)
+{
+ struct dwc2_hsotg *hsotg = dwc2_hcd_to_hsotg(hcd);
+ u32 hprt0;
+
+ if (!((hsotg->op_state == OTG_STATE_B_HOST) ||
+ (hsotg->op_state == OTG_STATE_A_HOST)))
+ return 0;
+
+ if (hsotg->lx_state != DWC2_L2)
+ return 0;
+
+ hprt0 = dwc2_read_hprt0(hsotg);
+ if ((hprt0 & HPRT0_CONNSTS) && (hprt0 & HPRT0_SUSP))
+ dwc2_port_resume(hsotg);
+ else
+ writel(0, hsotg->regs + PCGCTL);
+
+ return 0;
+}
+
/* Returns the current frame number */
static int _dwc2_hcd_get_frame_number(struct usb_hcd *hcd)
{
@@ -2669,6 +2734,9 @@ static struct hc_driver dwc2_hc_driver = {
.hub_status_data = _dwc2_hcd_hub_status_data,
.hub_control = _dwc2_hcd_hub_control,
.clear_tt_buffer_complete = _dwc2_hcd_clear_tt_buffer_complete,
+
+ .bus_suspend = _dwc2_hcd_suspend,
+ .bus_resume = _dwc2_hcd_resume,
};
/*
@@ -2778,6 +2846,9 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
int i, num_channels;
int retval;
+ if (usb_disabled())
+ return -ENODEV;
+
dev_dbg(hsotg->dev, "DWC OTG HCD INIT\n");
/* Detect config values from hardware */
@@ -2839,7 +2910,6 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
hcd->has_tt = 1;
- spin_lock_init(&hsotg->lock);
((struct wrapper_priv_data *) &hcd->hcd_priv)->hsotg = hsotg;
hsotg->priv = hcd;
diff --git a/drivers/usb/dwc2/hcd.h b/drivers/usb/dwc2/hcd.h
index a12bb1538666..e69a843d8928 100644
--- a/drivers/usb/dwc2/hcd.h
+++ b/drivers/usb/dwc2/hcd.h
@@ -668,9 +668,6 @@ extern irqreturn_t dwc2_handle_hcd_intr(struct dwc2_hsotg *hsotg);
*/
extern void dwc2_hcd_stop(struct dwc2_hsotg *hsotg);
-extern void dwc2_hcd_start(struct dwc2_hsotg *hsotg);
-extern void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg);
-
/**
* dwc2_hcd_is_b_host() - Returns 1 if core currently is acting as B host,
* and 0 otherwise
@@ -680,13 +677,6 @@ extern void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg);
extern int dwc2_hcd_is_b_host(struct dwc2_hsotg *hsotg);
/**
- * dwc2_hcd_get_frame_number() - Returns current frame number
- *
- * @hsotg: The DWC2 HCD
- */
-extern int dwc2_hcd_get_frame_number(struct dwc2_hsotg *hsotg);
-
-/**
* dwc2_hcd_dump_state() - Dumps hsotg state
*
* @hsotg: The DWC2 HCD
diff --git a/drivers/usb/dwc2/pci.c b/drivers/usb/dwc2/pci.c
index c291fca5d21f..a4e724b0a62e 100644
--- a/drivers/usb/dwc2/pci.c
+++ b/drivers/usb/dwc2/pci.c
@@ -141,6 +141,13 @@ static int dwc2_driver_probe(struct pci_dev *dev,
pci_set_master(dev);
+ retval = devm_request_irq(hsotg->dev, dev->irq,
+ dwc2_handle_common_intr, IRQF_SHARED,
+ dev_name(hsotg->dev), hsotg);
+ if (retval)
+ return retval;
+
+ spin_lock_init(&hsotg->lock);
retval = dwc2_hcd_init(hsotg, dev->irq, &dwc2_module_params);
if (retval) {
pci_disable_device(dev);
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index 121dbdafc06b..6a795aa2ff05 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -40,6 +40,7 @@
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/of_device.h>
+#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/usb/of.h>
@@ -121,6 +122,7 @@ static int dwc2_driver_remove(struct platform_device *dev)
struct dwc2_hsotg *hsotg = platform_get_drvdata(dev);
dwc2_hcd_remove(hsotg);
+ s3c_hsotg_remove(hsotg);
return 0;
}
@@ -129,6 +131,7 @@ static const struct of_device_id dwc2_of_match_table[] = {
{ .compatible = "brcm,bcm2835-usb", .data = &params_bcm2835 },
{ .compatible = "rockchip,rk3066-usb", .data = &params_rk3066 },
{ .compatible = "snps,dwc2", .data = NULL },
+ { .compatible = "samsung,s3c6400-hsotg", .data = NULL},
{},
};
MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
@@ -155,9 +158,6 @@ static int dwc2_driver_probe(struct platform_device *dev)
int retval;
int irq;
- if (usb_disabled())
- return -ENODEV;
-
match = of_match_device(dwc2_of_match_table, &dev->dev);
if (match && match->data) {
params = match->data;
@@ -194,6 +194,14 @@ static int dwc2_driver_probe(struct platform_device *dev)
return irq;
}
+ dev_dbg(hsotg->dev, "registering common handler for irq%d\n",
+ irq);
+ retval = devm_request_irq(hsotg->dev, irq,
+ dwc2_handle_common_intr, IRQF_SHARED,
+ dev_name(hsotg->dev), hsotg);
+ if (retval)
+ return retval;
+
res = platform_get_resource(dev, IORESOURCE_MEM, 0);
hsotg->regs = devm_ioremap_resource(&dev->dev, res);
if (IS_ERR(hsotg->regs))
@@ -204,6 +212,11 @@ static int dwc2_driver_probe(struct platform_device *dev)
hsotg->dr_mode = of_usb_get_dr_mode(dev->dev.of_node);
+ spin_lock_init(&hsotg->lock);
+ mutex_init(&hsotg->init_mutex);
+ retval = dwc2_gadget_init(hsotg, irq);
+ if (retval)
+ return retval;
retval = dwc2_hcd_init(hsotg, irq, params);
if (retval)
return retval;
@@ -213,10 +226,35 @@ static int dwc2_driver_probe(struct platform_device *dev)
return retval;
}
+static int __maybe_unused dwc2_suspend(struct device *dev)
+{
+ struct dwc2_hsotg *dwc2 = dev_get_drvdata(dev);
+ int ret = 0;
+
+ if (dwc2_is_device_mode(dwc2))
+ ret = s3c_hsotg_suspend(dwc2);
+ return ret;
+}
+
+static int __maybe_unused dwc2_resume(struct device *dev)
+{
+ struct dwc2_hsotg *dwc2 = dev_get_drvdata(dev);
+ int ret = 0;
+
+ if (dwc2_is_device_mode(dwc2))
+ ret = s3c_hsotg_resume(dwc2);
+ return ret;
+}
+
+static const struct dev_pm_ops dwc2_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(dwc2_suspend, dwc2_resume)
+};
+
static struct platform_driver dwc2_platform_driver = {
.driver = {
.name = dwc2_driver_name,
.of_match_table = dwc2_of_match_table,
+ .pm = &dwc2_dev_pm_ops,
},
.probe = dwc2_driver_probe,
.remove = dwc2_driver_remove,
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index f4e5cc60db0b..58b5b2cde4c5 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -55,7 +55,7 @@ config USB_DWC3_OMAP
config USB_DWC3_EXYNOS
tristate "Samsung Exynos Platform"
- depends on ARCH_EXYNOS || COMPILE_TEST
+ depends on ARCH_EXYNOS && OF || COMPILE_TEST
default USB_DWC3
help
Recent Exynos5 SoCs ship with one DesignWare Core USB3 IP inside,
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index b0f4d52b7f04..25ddc39efad8 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -19,6 +19,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
@@ -32,6 +33,7 @@
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/of.h>
+#include <linux/acpi.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -363,6 +365,72 @@ static void dwc3_cache_hwparams(struct dwc3 *dwc)
}
/**
+ * dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core
+ * @dwc: Pointer to our controller context structure
+ */
+static void dwc3_phy_setup(struct dwc3 *dwc)
+{
+ u32 reg;
+
+ reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
+
+ /*
+ * Above 1.94a, it is recommended to set DWC3_GUSB3PIPECTL_SUSPHY
+ * to '0' during coreConsultant configuration. So default value
+ * will be '0' when the core is reset. Application needs to set it
+ * to '1' after the core initialization is completed.
+ */
+ if (dwc->revision > DWC3_REVISION_194A)
+ reg |= DWC3_GUSB3PIPECTL_SUSPHY;
+
+ if (dwc->u2ss_inp3_quirk)
+ reg |= DWC3_GUSB3PIPECTL_U2SSINP3OK;
+
+ if (dwc->req_p1p2p3_quirk)
+ reg |= DWC3_GUSB3PIPECTL_REQP1P2P3;
+
+ if (dwc->del_p1p2p3_quirk)
+ reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN;
+
+ if (dwc->del_phy_power_chg_quirk)
+ reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE;
+
+ if (dwc->lfps_filter_quirk)
+ reg |= DWC3_GUSB3PIPECTL_LFPSFILT;
+
+ if (dwc->rx_detect_poll_quirk)
+ reg |= DWC3_GUSB3PIPECTL_RX_DETOPOLL;
+
+ if (dwc->tx_de_emphasis_quirk)
+ reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(dwc->tx_de_emphasis);
+
+ if (dwc->dis_u3_susphy_quirk)
+ reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
+
+ dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+
+ mdelay(100);
+
+ reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
+
+ /*
+ * Above 1.94a, it is recommended to set DWC3_GUSB2PHYCFG_SUSPHY to
+ * '0' during coreConsultant configuration. So default value will
+ * be '0' when the core is reset. Application needs to set it to
+ * '1' after the core initialization is completed.
+ */
+ if (dwc->revision > DWC3_REVISION_194A)
+ reg |= DWC3_GUSB2PHYCFG_SUSPHY;
+
+ if (dwc->dis_u2_susphy_quirk)
+ reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
+
+ dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+
+ mdelay(100);
+}
+
+/**
* dwc3_core_init - Low-level initialization of DWC3 Core
* @dwc: Pointer to our controller context structure
*
@@ -384,6 +452,12 @@ static int dwc3_core_init(struct dwc3 *dwc)
}
dwc->revision = reg;
+ /*
+ * Write Linux Version Code to our GUID register so it's easy to figure
+ * out which kernel version a bug was found.
+ */
+ dwc3_writel(dwc->regs, DWC3_GUID, LINUX_VERSION_CODE);
+
/* Handle USB2.0-only core configuration */
if (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
DWC3_GHWPARAMS3_SSPHY_IFC_DIS) {
@@ -414,7 +488,6 @@ static int dwc3_core_init(struct dwc3 *dwc)
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
- reg &= ~DWC3_GCTL_DISSCRAMBLE;
switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {
case DWC3_GHWPARAMS1_EN_PWROPT_CLK:
@@ -441,11 +514,34 @@ static int dwc3_core_init(struct dwc3 *dwc)
case DWC3_GHWPARAMS1_EN_PWROPT_HIB:
/* enable hibernation here */
dwc->nr_scratch = DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(hwparams4);
+
+ /*
+ * REVISIT Enabling this bit so that host-mode hibernation
+ * will work. Device-mode hibernation is not yet implemented.
+ */
+ reg |= DWC3_GCTL_GBLHIBERNATIONEN;
break;
default:
dev_dbg(dwc->dev, "No power optimization available\n");
}
+ /* check if current dwc3 is on simulation board */
+ if (dwc->hwparams.hwparams6 & DWC3_GHWPARAMS6_EN_FPGA) {
+ dev_dbg(dwc->dev, "it is on FPGA board\n");
+ dwc->is_fpga = true;
+ }
+
+ WARN_ONCE(dwc->disable_scramble_quirk && !dwc->is_fpga,
+ "disable_scramble cannot be used on non-FPGA builds\n");
+
+ if (dwc->disable_scramble_quirk && dwc->is_fpga)
+ reg |= DWC3_GCTL_DISSCRAMBLE;
+ else
+ reg &= ~DWC3_GCTL_DISSCRAMBLE;
+
+ if (dwc->u2exit_lfps_quirk)
+ reg |= DWC3_GCTL_U2EXIT_LFPS;
+
/*
* WORKAROUND: DWC3 revisions <1.90a have a bug
* where the device can fail to connect at SuperSpeed
@@ -459,6 +555,8 @@ static int dwc3_core_init(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+ dwc3_phy_setup(dwc);
+
ret = dwc3_alloc_scratch_buffers(dwc);
if (ret)
goto err1;
@@ -630,6 +728,9 @@ static int dwc3_probe(struct platform_device *pdev)
struct device_node *node = dev->of_node;
struct resource *res;
struct dwc3 *dwc;
+ u8 lpm_nyet_threshold;
+ u8 tx_de_emphasis;
+ u8 hird_threshold;
int ret;
@@ -685,22 +786,96 @@ static int dwc3_probe(struct platform_device *pdev)
*/
res->start -= DWC3_GLOBALS_REGS_START;
+ /* default to highest possible threshold */
+ lpm_nyet_threshold = 0xff;
+
+ /* default to -3.5dB de-emphasis */
+ tx_de_emphasis = 1;
+
+ /*
+ * default to assert utmi_sleep_n and use maximum allowed HIRD
+ * threshold value of 0b1100
+ */
+ hird_threshold = 12;
+
if (node) {
dwc->maximum_speed = of_usb_get_maximum_speed(node);
-
- dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
+ dwc->has_lpm_erratum = of_property_read_bool(node,
+ "snps,has-lpm-erratum");
+ of_property_read_u8(node, "snps,lpm-nyet-threshold",
+ &lpm_nyet_threshold);
+ dwc->is_utmi_l1_suspend = of_property_read_bool(node,
+ "snps,is-utmi-l1-suspend");
+ of_property_read_u8(node, "snps,hird-threshold",
+ &hird_threshold);
+
+ dwc->needs_fifo_resize = of_property_read_bool(node,
+ "tx-fifo-resize");
dwc->dr_mode = of_usb_get_dr_mode(node);
+
+ dwc->disable_scramble_quirk = of_property_read_bool(node,
+ "snps,disable_scramble_quirk");
+ dwc->u2exit_lfps_quirk = of_property_read_bool(node,
+ "snps,u2exit_lfps_quirk");
+ dwc->u2ss_inp3_quirk = of_property_read_bool(node,
+ "snps,u2ss_inp3_quirk");
+ dwc->req_p1p2p3_quirk = of_property_read_bool(node,
+ "snps,req_p1p2p3_quirk");
+ dwc->del_p1p2p3_quirk = of_property_read_bool(node,
+ "snps,del_p1p2p3_quirk");
+ dwc->del_phy_power_chg_quirk = of_property_read_bool(node,
+ "snps,del_phy_power_chg_quirk");
+ dwc->lfps_filter_quirk = of_property_read_bool(node,
+ "snps,lfps_filter_quirk");
+ dwc->rx_detect_poll_quirk = of_property_read_bool(node,
+ "snps,rx_detect_poll_quirk");
+ dwc->dis_u3_susphy_quirk = of_property_read_bool(node,
+ "snps,dis_u3_susphy_quirk");
+ dwc->dis_u2_susphy_quirk = of_property_read_bool(node,
+ "snps,dis_u2_susphy_quirk");
+
+ dwc->tx_de_emphasis_quirk = of_property_read_bool(node,
+ "snps,tx_de_emphasis_quirk");
+ of_property_read_u8(node, "snps,tx_de_emphasis",
+ &tx_de_emphasis);
} else if (pdata) {
dwc->maximum_speed = pdata->maximum_speed;
+ dwc->has_lpm_erratum = pdata->has_lpm_erratum;
+ if (pdata->lpm_nyet_threshold)
+ lpm_nyet_threshold = pdata->lpm_nyet_threshold;
+ dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend;
+ if (pdata->hird_threshold)
+ hird_threshold = pdata->hird_threshold;
dwc->needs_fifo_resize = pdata->tx_fifo_resize;
dwc->dr_mode = pdata->dr_mode;
+
+ dwc->disable_scramble_quirk = pdata->disable_scramble_quirk;
+ dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk;
+ dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
+ dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
+ dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
+ dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk;
+ dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
+ dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
+ dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
+ dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;
+
+ dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;
+ if (pdata->tx_de_emphasis)
+ tx_de_emphasis = pdata->tx_de_emphasis;
}
/* default to superspeed if no maximum_speed passed */
if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
dwc->maximum_speed = USB_SPEED_SUPER;
+ dwc->lpm_nyet_threshold = lpm_nyet_threshold;
+ dwc->tx_de_emphasis = tx_de_emphasis;
+
+ dwc->hird_threshold = hird_threshold
+ | (dwc->is_utmi_l1_suspend << 4);
+
ret = dwc3_core_get_phy(dwc);
if (ret)
return ret;
@@ -708,9 +883,11 @@ static int dwc3_probe(struct platform_device *pdev)
spin_lock_init(&dwc->lock);
platform_set_drvdata(pdev, dwc);
- dev->dma_mask = dev->parent->dma_mask;
- dev->dma_parms = dev->parent->dma_parms;
- dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
+ if (!dev->dma_mask) {
+ dev->dma_mask = dev->parent->dma_mask;
+ dev->dma_parms = dev->parent->dma_parms;
+ dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
+ }
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
@@ -815,50 +992,6 @@ static int dwc3_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM_SLEEP
-static int dwc3_prepare(struct device *dev)
-{
- struct dwc3 *dwc = dev_get_drvdata(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&dwc->lock, flags);
-
- switch (dwc->dr_mode) {
- case USB_DR_MODE_PERIPHERAL:
- case USB_DR_MODE_OTG:
- dwc3_gadget_prepare(dwc);
- /* FALLTHROUGH */
- case USB_DR_MODE_HOST:
- default:
- dwc3_event_buffers_cleanup(dwc);
- break;
- }
-
- spin_unlock_irqrestore(&dwc->lock, flags);
-
- return 0;
-}
-
-static void dwc3_complete(struct device *dev)
-{
- struct dwc3 *dwc = dev_get_drvdata(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&dwc->lock, flags);
-
- dwc3_event_buffers_setup(dwc);
- switch (dwc->dr_mode) {
- case USB_DR_MODE_PERIPHERAL:
- case USB_DR_MODE_OTG:
- dwc3_gadget_complete(dwc);
- /* FALLTHROUGH */
- case USB_DR_MODE_HOST:
- default:
- break;
- }
-
- spin_unlock_irqrestore(&dwc->lock, flags);
-}
-
static int dwc3_suspend(struct device *dev)
{
struct dwc3 *dwc = dev_get_drvdata(dev);
@@ -873,7 +1006,7 @@ static int dwc3_suspend(struct device *dev)
/* FALLTHROUGH */
case USB_DR_MODE_HOST:
default:
- /* do nothing */
+ dwc3_event_buffers_cleanup(dwc);
break;
}
@@ -906,6 +1039,7 @@ static int dwc3_resume(struct device *dev)
spin_lock_irqsave(&dwc->lock, flags);
+ dwc3_event_buffers_setup(dwc);
dwc3_writel(dwc->regs, DWC3_GCTL, dwc->gctl);
switch (dwc->dr_mode) {
@@ -934,9 +1068,6 @@ err_usb2phy_init:
}
static const struct dev_pm_ops dwc3_dev_pm_ops = {
- .prepare = dwc3_prepare,
- .complete = dwc3_complete,
-
SET_SYSTEM_SLEEP_PM_OPS(dwc3_suspend, dwc3_resume)
};
@@ -958,12 +1089,24 @@ static const struct of_device_id of_dwc3_match[] = {
MODULE_DEVICE_TABLE(of, of_dwc3_match);
#endif
+#ifdef CONFIG_ACPI
+
+#define ACPI_ID_INTEL_BSW "808622B7"
+
+static const struct acpi_device_id dwc3_acpi_match[] = {
+ { ACPI_ID_INTEL_BSW, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match);
+#endif
+
static struct platform_driver dwc3_driver = {
.probe = dwc3_probe,
.remove = dwc3_remove,
.driver = {
.name = "dwc3",
.of_match_table = of_match_ptr(of_dwc3_match),
+ .acpi_match_table = ACPI_PTR(dwc3_acpi_match),
.pm = DWC3_PM_OPS,
},
};
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 66f62563bcf9..4bb9aa696ede 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -166,6 +166,7 @@
#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
+#define DWC3_GCTL_U2EXIT_LFPS (1 << 2)
#define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1)
#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
@@ -175,7 +176,17 @@
/* Global USB3 PIPE Control Register */
#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB3PIPECTL_U2SSINP3OK (1 << 29)
+#define DWC3_GUSB3PIPECTL_REQP1P2P3 (1 << 24)
+#define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19)
+#define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7)
+#define DWC3_GUSB3PIPECTL_DEP1P2P3_EN DWC3_GUSB3PIPECTL_DEP1P2P3(1)
+#define DWC3_GUSB3PIPECTL_DEPOCHANGE (1 << 18)
#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
+#define DWC3_GUSB3PIPECTL_LFPSFILT (1 << 9)
+#define DWC3_GUSB3PIPECTL_RX_DETOPOLL (1 << 8)
+#define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK DWC3_GUSB3PIPECTL_TX_DEEPH(3)
+#define DWC3_GUSB3PIPECTL_TX_DEEPH(n) ((n) << 1)
/* Global TX Fifo Size Register */
#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
@@ -210,6 +221,9 @@
#define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13)
#define DWC3_MAX_HIBER_SCRATCHBUFS 15
+/* Global HWPARAMS6 Register */
+#define DWC3_GHWPARAMS6_EN_FPGA (1 << 7)
+
/* Device Configuration Register */
#define DWC3_DCFG_DEVADDR(addr) ((addr) << 3)
#define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f)
@@ -243,16 +257,19 @@
#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6))
/* These apply for core versions 1.94a and later */
-#define DWC3_DCTL_KEEP_CONNECT (1 << 19)
-#define DWC3_DCTL_L1_HIBER_EN (1 << 18)
-#define DWC3_DCTL_CRS (1 << 17)
-#define DWC3_DCTL_CSS (1 << 16)
+#define DWC3_DCTL_LPM_ERRATA_MASK DWC3_DCTL_LPM_ERRATA(0xf)
+#define DWC3_DCTL_LPM_ERRATA(n) ((n) << 20)
+
+#define DWC3_DCTL_KEEP_CONNECT (1 << 19)
+#define DWC3_DCTL_L1_HIBER_EN (1 << 18)
+#define DWC3_DCTL_CRS (1 << 17)
+#define DWC3_DCTL_CSS (1 << 16)
-#define DWC3_DCTL_INITU2ENA (1 << 12)
-#define DWC3_DCTL_ACCEPTU2ENA (1 << 11)
-#define DWC3_DCTL_INITU1ENA (1 << 10)
-#define DWC3_DCTL_ACCEPTU1ENA (1 << 9)
-#define DWC3_DCTL_TSTCTRL_MASK (0xf << 1)
+#define DWC3_DCTL_INITU2ENA (1 << 12)
+#define DWC3_DCTL_ACCEPTU2ENA (1 << 11)
+#define DWC3_DCTL_INITU1ENA (1 << 10)
+#define DWC3_DCTL_ACCEPTU1ENA (1 << 9)
+#define DWC3_DCTL_TSTCTRL_MASK (0xf << 1)
#define DWC3_DCTL_ULSTCHNGREQ_MASK (0x0f << 5)
#define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK)
@@ -657,17 +674,41 @@ struct dwc3_scratchpad_array {
* @regset: debugfs pointer to regdump file
* @test_mode: true when we're entering a USB test mode
* @test_mode_nr: test feature selector
+ * @lpm_nyet_threshold: LPM NYET response threshold
+ * @hird_threshold: HIRD threshold
* @delayed_status: true when gadget driver asks for delayed status
* @ep0_bounced: true when we used bounce buffer
* @ep0_expect_in: true when we expect a DATA IN transfer
* @has_hibernation: true when dwc3 was configured with Hibernation
+ * @has_lpm_erratum: true when core was configured with LPM Erratum. Note that
+ * there's now way for software to detect this in runtime.
+ * @is_utmi_l1_suspend: the core asserts output signal
+ * 0 - utmi_sleep_n
+ * 1 - utmi_l1_suspend_n
* @is_selfpowered: true when we are selfpowered
+ * @is_fpga: true when we are using the FPGA board
* @needs_fifo_resize: not all users might want fifo resizing, flag it
* @pullups_connected: true when Run/Stop bit is set
* @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes.
* @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
* @start_config_issued: true when StartConfig command has been issued
* @three_stage_setup: set if we perform a three phase setup
+ * @disable_scramble_quirk: set if we enable the disable scramble quirk
+ * @u2exit_lfps_quirk: set if we enable u2exit lfps quirk
+ * @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk
+ * @req_p1p2p3_quirk: set if we enable request p1p2p3 quirk
+ * @del_p1p2p3_quirk: set if we enable delay p1p2p3 quirk
+ * @del_phy_power_chg_quirk: set if we enable delay phy power change quirk
+ * @lfps_filter_quirk: set if we enable LFPS filter quirk
+ * @rx_detect_poll_quirk: set if we enable rx_detect to polling lfps quirk
+ * @dis_u3_susphy_quirk: set if we disable usb3 suspend phy
+ * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy
+ * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
+ * @tx_de_emphasis: Tx de-emphasis value
+ * 0 - -6dB de-emphasis
+ * 1 - -3.5dB de-emphasis
+ * 2 - No de-emphasis
+ * 3 - Reserved
*/
struct dwc3 {
struct usb_ctrlrequest *ctrl_req;
@@ -759,18 +800,37 @@ struct dwc3 {
u8 test_mode;
u8 test_mode_nr;
+ u8 lpm_nyet_threshold;
+ u8 hird_threshold;
unsigned delayed_status:1;
unsigned ep0_bounced:1;
unsigned ep0_expect_in:1;
unsigned has_hibernation:1;
+ unsigned has_lpm_erratum:1;
+ unsigned is_utmi_l1_suspend:1;
unsigned is_selfpowered:1;
+ unsigned is_fpga:1;
unsigned needs_fifo_resize:1;
unsigned pullups_connected:1;
unsigned resize_fifos:1;
unsigned setup_packet_pending:1;
unsigned start_config_issued:1;
unsigned three_stage_setup:1;
+
+ unsigned disable_scramble_quirk:1;
+ unsigned u2exit_lfps_quirk:1;
+ unsigned u2ss_inp3_quirk:1;
+ unsigned req_p1p2p3_quirk:1;
+ unsigned del_p1p2p3_quirk:1;
+ unsigned del_phy_power_chg_quirk:1;
+ unsigned lfps_filter_quirk:1;
+ unsigned rx_detect_poll_quirk:1;
+ unsigned dis_u3_susphy_quirk:1;
+ unsigned dis_u2_susphy_quirk:1;
+
+ unsigned tx_de_emphasis_quirk:1;
+ unsigned tx_de_emphasis:2;
};
/* -------------------------------------------------------------------------- */
@@ -964,20 +1024,9 @@ static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc,
/* power management interface */
#if !IS_ENABLED(CONFIG_USB_DWC3_HOST)
-int dwc3_gadget_prepare(struct dwc3 *dwc);
-void dwc3_gadget_complete(struct dwc3 *dwc);
int dwc3_gadget_suspend(struct dwc3 *dwc);
int dwc3_gadget_resume(struct dwc3 *dwc);
#else
-static inline int dwc3_gadget_prepare(struct dwc3 *dwc)
-{
- return 0;
-}
-
-static inline void dwc3_gadget_complete(struct dwc3 *dwc)
-{
-}
-
static inline int dwc3_gadget_suspend(struct dwc3 *dwc)
{
return 0;
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 3951a65fea04..7bd0a95b2815 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -20,7 +20,6 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
-#include <linux/platform_data/dwc3-exynos.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/usb/otg.h>
@@ -35,6 +34,9 @@ struct dwc3_exynos {
struct device *dev;
struct clk *clk;
+ struct clk *susp_clk;
+ struct clk *axius_clk;
+
struct regulator *vdd33;
struct regulator *vdd10;
};
@@ -106,7 +108,6 @@ static int dwc3_exynos_remove_child(struct device *dev, void *unused)
static int dwc3_exynos_probe(struct platform_device *pdev)
{
struct dwc3_exynos *exynos;
- struct clk *clk;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
@@ -133,16 +134,32 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
return ret;
}
- clk = devm_clk_get(dev, "usbdrd30");
- if (IS_ERR(clk)) {
+ exynos->dev = dev;
+
+ exynos->clk = devm_clk_get(dev, "usbdrd30");
+ if (IS_ERR(exynos->clk)) {
dev_err(dev, "couldn't get clock\n");
return -EINVAL;
}
+ clk_prepare_enable(exynos->clk);
- exynos->dev = dev;
- exynos->clk = clk;
+ exynos->susp_clk = devm_clk_get(dev, "usbdrd30_susp_clk");
+ if (IS_ERR(exynos->susp_clk)) {
+ dev_dbg(dev, "no suspend clk specified\n");
+ exynos->susp_clk = NULL;
+ }
+ clk_prepare_enable(exynos->susp_clk);
- clk_prepare_enable(exynos->clk);
+ if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) {
+ exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk");
+ if (IS_ERR(exynos->axius_clk)) {
+ dev_err(dev, "no AXI UpScaler clk specified\n");
+ return -ENODEV;
+ }
+ clk_prepare_enable(exynos->axius_clk);
+ } else {
+ exynos->axius_clk = NULL;
+ }
exynos->vdd33 = devm_regulator_get(dev, "vdd33");
if (IS_ERR(exynos->vdd33)) {
@@ -185,7 +202,9 @@ err4:
err3:
regulator_disable(exynos->vdd33);
err2:
- clk_disable_unprepare(clk);
+ clk_disable_unprepare(exynos->axius_clk);
+ clk_disable_unprepare(exynos->susp_clk);
+ clk_disable_unprepare(exynos->clk);
return ret;
}
@@ -197,6 +216,8 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
platform_device_unregister(exynos->usb2_phy);
platform_device_unregister(exynos->usb3_phy);
+ clk_disable_unprepare(exynos->axius_clk);
+ clk_disable_unprepare(exynos->susp_clk);
clk_disable_unprepare(exynos->clk);
regulator_disable(exynos->vdd33);
@@ -205,19 +226,19 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
return 0;
}
-#ifdef CONFIG_OF
static const struct of_device_id exynos_dwc3_match[] = {
{ .compatible = "samsung,exynos5250-dwusb3" },
+ { .compatible = "samsung,exynos7-dwusb3" },
{},
};
MODULE_DEVICE_TABLE(of, exynos_dwc3_match);
-#endif
#ifdef CONFIG_PM_SLEEP
static int dwc3_exynos_suspend(struct device *dev)
{
struct dwc3_exynos *exynos = dev_get_drvdata(dev);
+ clk_disable(exynos->axius_clk);
clk_disable(exynos->clk);
regulator_disable(exynos->vdd33);
@@ -243,6 +264,7 @@ static int dwc3_exynos_resume(struct device *dev)
}
clk_enable(exynos->clk);
+ clk_enable(exynos->axius_clk);
/* runtime set active to reflect active state. */
pm_runtime_disable(dev);
@@ -266,7 +288,7 @@ static struct platform_driver dwc3_exynos_driver = {
.remove = dwc3_exynos_remove,
.driver = {
.name = "exynos-dwc3",
- .of_match_table = of_match_ptr(exynos_dwc3_match),
+ .of_match_table = exynos_dwc3_match,
.pm = DEV_PM_OPS,
},
};
diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c
index 7ec8495f4523..fe3b9335a74e 100644
--- a/drivers/usb/dwc3/dwc3-keystone.c
+++ b/drivers/usb/dwc3/dwc3-keystone.c
@@ -104,11 +104,6 @@ static int kdwc3_probe(struct platform_device *pdev)
kdwc->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(dev, "missing usbss resource\n");
- return -EINVAL;
- }
-
kdwc->usbss = devm_ioremap_resource(dev, res);
if (IS_ERR(kdwc->usbss))
return PTR_ERR(kdwc->usbss);
@@ -128,6 +123,7 @@ static int kdwc3_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "missing irq\n");
+ error = irq;
goto err_irq;
}
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index a0aa9f3da441..172d64e585b6 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -593,27 +593,12 @@ static const struct of_device_id of_dwc3_match[] = {
MODULE_DEVICE_TABLE(of, of_dwc3_match);
#ifdef CONFIG_PM_SLEEP
-static int dwc3_omap_prepare(struct device *dev)
-{
- struct dwc3_omap *omap = dev_get_drvdata(dev);
-
- dwc3_omap_disable_irqs(omap);
-
- return 0;
-}
-
-static void dwc3_omap_complete(struct device *dev)
-{
- struct dwc3_omap *omap = dev_get_drvdata(dev);
-
- dwc3_omap_enable_irqs(omap);
-}
-
static int dwc3_omap_suspend(struct device *dev)
{
struct dwc3_omap *omap = dev_get_drvdata(dev);
omap->utmi_otg_status = dwc3_omap_read_utmi_status(omap);
+ dwc3_omap_disable_irqs(omap);
return 0;
}
@@ -623,6 +608,7 @@ static int dwc3_omap_resume(struct device *dev)
struct dwc3_omap *omap = dev_get_drvdata(dev);
dwc3_omap_write_utmi_status(omap, omap->utmi_otg_status);
+ dwc3_omap_enable_irqs(omap);
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
@@ -632,8 +618,6 @@ static int dwc3_omap_resume(struct device *dev)
}
static const struct dev_pm_ops dwc3_omap_dev_pm_ops = {
- .prepare = dwc3_omap_prepare,
- .complete = dwc3_omap_complete,
SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume)
};
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index a36cf66302fb..7c4faf738747 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -25,6 +25,8 @@
#include <linux/usb/otg.h>
#include <linux/usb/usb_phy_generic.h>
+#include "platform_data.h"
+
/* FIXME define these in <linux/pci_ids.h> */
#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
#define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd
@@ -102,6 +104,9 @@ static int dwc3_pci_probe(struct pci_dev *pci,
struct dwc3_pci *glue;
int ret;
struct device *dev = &pci->dev;
+ struct dwc3_platform_data dwc3_pdata;
+
+ memset(&dwc3_pdata, 0x00, sizeof(dwc3_pdata));
glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
if (!glue)
@@ -140,6 +145,31 @@ static int dwc3_pci_probe(struct pci_dev *pci,
res[1].name = "dwc_usb3";
res[1].flags = IORESOURCE_IRQ;
+ if (pci->vendor == PCI_VENDOR_ID_AMD &&
+ pci->device == PCI_DEVICE_ID_AMD_NL_USB) {
+ dwc3_pdata.has_lpm_erratum = true;
+ dwc3_pdata.lpm_nyet_threshold = 0xf;
+
+ dwc3_pdata.u2exit_lfps_quirk = true;
+ dwc3_pdata.u2ss_inp3_quirk = true;
+ dwc3_pdata.req_p1p2p3_quirk = true;
+ dwc3_pdata.del_p1p2p3_quirk = true;
+ dwc3_pdata.del_phy_power_chg_quirk = true;
+ dwc3_pdata.lfps_filter_quirk = true;
+ dwc3_pdata.rx_detect_poll_quirk = true;
+
+ dwc3_pdata.tx_de_emphasis_quirk = true;
+ dwc3_pdata.tx_de_emphasis = 1;
+
+ /*
+ * FIXME these quirks should be removed when AMD NL
+ * taps out
+ */
+ dwc3_pdata.disable_scramble_quirk = true;
+ dwc3_pdata.dis_u3_susphy_quirk = true;
+ dwc3_pdata.dis_u2_susphy_quirk = true;
+ }
+
ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
if (ret) {
dev_err(dev, "couldn't add resources to dwc3 device\n");
@@ -148,6 +178,10 @@ static int dwc3_pci_probe(struct pci_dev *pci,
pci_set_drvdata(pci, glue);
+ ret = platform_device_add_data(dwc3, &dwc3_pdata, sizeof(dwc3_pdata));
+ if (ret)
+ goto err3;
+
dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
dwc3->dev.dma_mask = dev->dma_mask;
@@ -185,6 +219,7 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BSW), },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BYT), },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MRFLD), },
+ { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
{ } /* Terminating Entry */
};
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
diff --git a/drivers/usb/dwc3/dwc3-st.c b/drivers/usb/dwc3/dwc3-st.c
index c7602b5362ad..4a1a543deeda 100644
--- a/drivers/usb/dwc3/dwc3-st.c
+++ b/drivers/usb/dwc3/dwc3-st.c
@@ -243,7 +243,7 @@ static int st_dwc3_probe(struct platform_device *pdev)
dwc3_data->rstc_rst = devm_reset_control_get(dev, "softreset");
if (IS_ERR(dwc3_data->rstc_rst)) {
dev_err(&pdev->dev, "could not get reset controller\n");
- ret = PTR_ERR(dwc3_data->rstc_pwrdn);
+ ret = PTR_ERR(dwc3_data->rstc_rst);
goto undo_powerdown;
}
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index df38e7ef4976..1bc77a3b4997 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -86,6 +86,8 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
params.param0 = upper_32_bits(dwc->ep0_trb_addr);
params.param1 = lower_32_bits(dwc->ep0_trb_addr);
+ trace_dwc3_prepare_trb(dep, trb);
+
ret = dwc3_send_gadget_ep_cmd(dwc, dep->number,
DWC3_DEPCMD_STARTTRANSFER, &params);
if (ret < 0) {
@@ -441,7 +443,6 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
case USB_DEVICE_LTM_ENABLE:
return -EINVAL;
- break;
case USB_DEVICE_TEST_MODE:
if ((wIndex & 0xff) != 0)
@@ -550,7 +551,6 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
switch (state) {
case USB_STATE_DEFAULT:
return -EINVAL;
- break;
case USB_STATE_ADDRESS:
ret = dwc3_ep0_delegate_req(dwc, ctrl);
@@ -700,35 +700,35 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
switch (ctrl->bRequest) {
case USB_REQ_GET_STATUS:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_GET_STATUS\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_GET_STATUS");
ret = dwc3_ep0_handle_status(dwc, ctrl);
break;
case USB_REQ_CLEAR_FEATURE:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_CLEAR_FEATURE\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_CLEAR_FEATURE");
ret = dwc3_ep0_handle_feature(dwc, ctrl, 0);
break;
case USB_REQ_SET_FEATURE:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_FEATURE\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_FEATURE");
ret = dwc3_ep0_handle_feature(dwc, ctrl, 1);
break;
case USB_REQ_SET_ADDRESS:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ADDRESS\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ADDRESS");
ret = dwc3_ep0_set_address(dwc, ctrl);
break;
case USB_REQ_SET_CONFIGURATION:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_CONFIGURATION\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_CONFIGURATION");
ret = dwc3_ep0_set_config(dwc, ctrl);
break;
case USB_REQ_SET_SEL:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_SEL\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_SEL");
ret = dwc3_ep0_set_sel(dwc, ctrl);
break;
case USB_REQ_SET_ISOCH_DELAY:
- dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY\n");
+ dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY");
ret = dwc3_ep0_set_isoch_delay(dwc, ctrl);
break;
default:
- dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver\n");
+ dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver");
ret = dwc3_ep0_delegate_req(dwc, ctrl);
break;
}
@@ -791,6 +791,8 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
trb = dwc->ep0_trb;
+ trace_dwc3_complete_trb(ep0, trb);
+
r = next_request(&ep0->request_list);
if (!r)
return;
@@ -855,6 +857,8 @@ static void dwc3_ep0_complete_status(struct dwc3 *dwc,
dep = dwc->eps[0];
trb = dwc->ep0_trb;
+ trace_dwc3_complete_trb(dep, trb);
+
if (!list_empty(&dep->request_list)) {
r = next_request(&dep->request_list);
@@ -875,7 +879,7 @@ static void dwc3_ep0_complete_status(struct dwc3 *dwc,
status = DWC3_TRB_SIZE_TRBSTS(trb->size);
if (status == DWC3_TRBSTS_SETUP_PENDING)
- dwc3_trace(trace_dwc3_ep0, "Setup Pending received\n");
+ dwc3_trace(trace_dwc3_ep0, "Setup Pending received");
dwc->ep0state = EP0_SETUP_PHASE;
dwc3_ep0_out_start(dwc);
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 546ea5431b8c..f03b136ecfce 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1140,8 +1140,14 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,
if (!dep->endpoint.desc) {
dev_dbg(dwc->dev, "trying to queue request %p to disabled %s\n",
request, ep->name);
- spin_unlock_irqrestore(&dwc->lock, flags);
- return -ESHUTDOWN;
+ ret = -ESHUTDOWN;
+ goto out;
+ }
+
+ if (WARN(req->dep != dep, "request %p belongs to '%s'\n",
+ request, req->dep->name)) {
+ ret = -EINVAL;
+ goto out;
}
dev_vdbg(dwc->dev, "queing request %p to %s length %d\n",
@@ -1149,6 +1155,8 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,
trace_dwc3_ep_queue(req);
ret = __dwc3_gadget_ep_queue(dep, req);
+
+out:
spin_unlock_irqrestore(&dwc->lock, flags);
return ret;
@@ -1622,8 +1630,7 @@ err0:
return ret;
}
-static int dwc3_gadget_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int dwc3_gadget_stop(struct usb_gadget *g)
{
struct dwc3 *dwc = gadget_to_dwc(g);
unsigned long flags;
@@ -2034,6 +2041,17 @@ static void dwc3_resume_gadget(struct dwc3 *dwc)
if (dwc->gadget_driver && dwc->gadget_driver->resume) {
spin_unlock(&dwc->lock);
dwc->gadget_driver->resume(&dwc->gadget);
+ }
+}
+
+static void dwc3_reset_gadget(struct dwc3 *dwc)
+{
+ if (!dwc->gadget_driver)
+ return;
+
+ if (dwc->gadget.speed != USB_SPEED_UNKNOWN) {
+ spin_unlock(&dwc->lock);
+ usb_gadget_udc_reset(&dwc->gadget, dwc->gadget_driver);
spin_lock(&dwc->lock);
}
}
@@ -2140,6 +2158,7 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
dwc->gadget.speed = USB_SPEED_UNKNOWN;
dwc->setup_packet_pending = false;
+ usb_gadget_set_state(&dwc->gadget, USB_STATE_NOTATTACHED);
}
static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
@@ -2177,11 +2196,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
dwc3_gadget_disconnect_interrupt(dwc);
}
- /* after reset -> Default State */
- usb_gadget_set_state(&dwc->gadget, USB_STATE_DEFAULT);
-
- if (dwc->gadget.speed != USB_SPEED_UNKNOWN)
- dwc3_disconnect_gadget(dwc);
+ dwc3_reset_gadget(dwc);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_TSTCTRL_MASK;
@@ -2287,11 +2302,20 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~(DWC3_DCTL_HIRD_THRES_MASK | DWC3_DCTL_L1_HIBER_EN);
+ reg |= DWC3_DCTL_HIRD_THRES(dwc->hird_threshold);
+
/*
- * TODO: This should be configurable. For now using
- * maximum allowed HIRD threshold value of 0b1100
+ * When dwc3 revisions >= 2.40a, LPM Erratum is enabled and
+ * DCFG.LPMCap is set, core responses with an ACK and the
+ * BESL value in the LPM token is less than or equal to LPM
+ * NYET threshold.
*/
- reg |= DWC3_DCTL_HIRD_THRES(12);
+ WARN_ONCE(dwc->revision < DWC3_REVISION_240A
+ && dwc->has_lpm_erratum,
+ "LPM Erratum not available on dwc3 revisisions < 2.40a\n");
+
+ if (dwc->has_lpm_erratum && dwc->revision >= DWC3_REVISION_240A)
+ reg |= DWC3_DCTL_LPM_ERRATA(dwc->lpm_nyet_threshold);
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
} else {
@@ -2744,26 +2768,13 @@ void dwc3_gadget_exit(struct dwc3 *dwc)
dwc->ctrl_req, dwc->ctrl_req_addr);
}
-int dwc3_gadget_prepare(struct dwc3 *dwc)
+int dwc3_gadget_suspend(struct dwc3 *dwc)
{
if (dwc->pullups_connected) {
dwc3_gadget_disable_irq(dwc);
dwc3_gadget_run_stop(dwc, true, true);
}
- return 0;
-}
-
-void dwc3_gadget_complete(struct dwc3 *dwc)
-{
- if (dwc->pullups_connected) {
- dwc3_gadget_enable_irq(dwc);
- dwc3_gadget_run_stop(dwc, true, false);
- }
-}
-
-int dwc3_gadget_suspend(struct dwc3 *dwc)
-{
__dwc3_gadget_ep_disable(dwc->eps[0]);
__dwc3_gadget_ep_disable(dwc->eps[1]);
@@ -2798,6 +2809,11 @@ int dwc3_gadget_resume(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_DCFG, dwc->dcfg);
+ if (dwc->pullups_connected) {
+ dwc3_gadget_enable_irq(dwc);
+ dwc3_gadget_run_stop(dwc, true, false);
+ }
+
return 0;
err1:
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index dcb8ca084598..12bfd3c5405e 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -29,8 +29,7 @@ int dwc3_host_init(struct dwc3 *dwc)
xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
if (!xhci) {
dev_err(dwc->dev, "couldn't allocate xHCI device\n");
- ret = -ENOMEM;
- goto err0;
+ return -ENOMEM;
}
dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
@@ -60,22 +59,33 @@ int dwc3_host_init(struct dwc3 *dwc)
goto err1;
}
+ phy_create_lookup(dwc->usb2_generic_phy, "usb2-phy",
+ dev_name(&xhci->dev));
+ phy_create_lookup(dwc->usb3_generic_phy, "usb3-phy",
+ dev_name(&xhci->dev));
+
ret = platform_device_add(xhci);
if (ret) {
dev_err(dwc->dev, "failed to register xHCI device\n");
- goto err1;
+ goto err2;
}
return 0;
-
+err2:
+ phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
+ dev_name(&xhci->dev));
+ phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
+ dev_name(&xhci->dev));
err1:
platform_device_put(xhci);
-
-err0:
return ret;
}
void dwc3_host_exit(struct dwc3 *dwc)
{
+ phy_remove_lookup(dwc->usb2_generic_phy, "usb2-phy",
+ dev_name(&dwc->xhci->dev));
+ phy_remove_lookup(dwc->usb3_generic_phy, "usb3-phy",
+ dev_name(&dwc->xhci->dev));
platform_device_unregister(dwc->xhci);
}
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index 7db34f00b89a..a3a3b6d5668c 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -24,4 +24,24 @@ struct dwc3_platform_data {
enum usb_device_speed maximum_speed;
enum usb_dr_mode dr_mode;
bool tx_fifo_resize;
+
+ unsigned is_utmi_l1_suspend:1;
+ u8 hird_threshold;
+
+ u8 lpm_nyet_threshold;
+
+ unsigned disable_scramble_quirk:1;
+ unsigned has_lpm_erratum:1;
+ unsigned u2exit_lfps_quirk:1;
+ unsigned u2ss_inp3_quirk:1;
+ unsigned req_p1p2p3_quirk:1;
+ unsigned del_p1p2p3_quirk:1;
+ unsigned del_phy_power_chg_quirk:1;
+ unsigned lfps_filter_quirk:1;
+ unsigned rx_detect_poll_quirk:1;
+ unsigned dis_u3_susphy_quirk:1;
+ unsigned dis_u2_susphy_quirk:1;
+
+ unsigned tx_de_emphasis_quirk:1;
+ unsigned tx_de_emphasis:2;
};
diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h
index 60b0f41eafc4..9fc20b33dd8e 100644
--- a/drivers/usb/dwc3/trace.h
+++ b/drivers/usb/dwc3/trace.h
@@ -61,7 +61,7 @@ DECLARE_EVENT_CLASS(dwc3_log_event,
TP_fast_assign(
__entry->event = event;
),
- TP_printk("event %08x\n", __entry->event)
+ TP_printk("event %08x", __entry->event)
);
DEFINE_EVENT(dwc3_log_event, dwc3_event,
@@ -157,7 +157,7 @@ DECLARE_EVENT_CLASS(dwc3_log_generic_cmd,
__entry->cmd = cmd;
__entry->param = param;
),
- TP_printk("cmd '%s' [%d] param %08x\n",
+ TP_printk("cmd '%s' [%d] param %08x",
dwc3_gadget_generic_cmd_string(__entry->cmd),
__entry->cmd, __entry->param
)
@@ -175,17 +175,21 @@ DECLARE_EVENT_CLASS(dwc3_log_gadget_ep_cmd,
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__field(unsigned int, cmd)
- __field(struct dwc3_gadget_ep_cmd_params *, params)
+ __field(u32, param0)
+ __field(u32, param1)
+ __field(u32, param2)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);
__entry->cmd = cmd;
- __entry->params = params;
+ __entry->param0 = params->param0;
+ __entry->param1 = params->param1;
+ __entry->param2 = params->param2;
),
- TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x\n",
+ TP_printk("%s: cmd '%s' [%d] params %08x %08x %08x",
__get_str(name), dwc3_gadget_ep_cmd_string(__entry->cmd),
- __entry->cmd, __entry->params->param0,
- __entry->params->param1, __entry->params->param2
+ __entry->cmd, __entry->param0,
+ __entry->param1, __entry->param2
)
);
@@ -214,7 +218,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb,
__entry->size = trb->size;
__entry->ctrl = trb->ctrl;
),
- TP_printk("%s: trb %p bph %08x bpl %08x size %08x ctrl %08x\n",
+ TP_printk("%s: trb %p bph %08x bpl %08x size %08x ctrl %08x",
__get_str(name), __entry->trb, __entry->bph, __entry->bpl,
__entry->size, __entry->ctrl
)
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index c4880fc0d86e..747ef53bda14 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -190,6 +190,12 @@ config USB_F_UAC2
config USB_F_UVC
tristate
+config USB_F_MIDI
+ tristate
+
+config USB_F_HID
+ tristate
+
choice
tristate "USB Gadget Drivers"
default USB_ETH
@@ -362,6 +368,61 @@ config USB_CONFIGFS_F_FS
implemented in kernel space (for instance Ethernet, serial or
mass storage) and other are implemented in user space.
+config USB_CONFIGFS_F_UAC1
+ boolean "Audio Class 1.0"
+ depends on USB_CONFIGFS
+ depends on SND
+ select USB_LIBCOMPOSITE
+ select SND_PCM
+ select USB_F_UAC1
+ help
+ This Audio function implements 1 AudioControl interface,
+ 1 AudioStreaming Interface each for USB-OUT and USB-IN.
+ This driver requires a real Audio codec to be present
+ on the device.
+
+config USB_CONFIGFS_F_UAC2
+ boolean "Audio Class 2.0"
+ depends on USB_CONFIGFS
+ depends on SND
+ select USB_LIBCOMPOSITE
+ select SND_PCM
+ select USB_F_UAC2
+ help
+ This Audio function is compatible with USB Audio Class
+ specification 2.0. It implements 1 AudioControl interface,
+ 1 AudioStreaming Interface each for USB-OUT and USB-IN.
+ This driver doesn't expect any real Audio codec to be present
+ on the device - the audio streams are simply sinked to and
+ sourced from a virtual ALSA sound card created. The user-space
+ application may choose to do whatever it wants with the data
+ received from the USB Host and choose to provide whatever it
+ wants as audio data to the USB Host.
+
+config USB_CONFIGFS_F_MIDI
+ boolean "MIDI function"
+ depends on USB_CONFIGFS
+ depends on SND
+ select USB_LIBCOMPOSITE
+ select SND_RAWMIDI
+ select USB_F_MIDI
+ help
+ The MIDI Function acts as a USB Audio device, with one MIDI
+ input and one MIDI output. These MIDI jacks appear as
+ a sound "card" in the ALSA sound system. Other MIDI
+ connections can then be made on the gadget system, using
+ ALSA's aconnect utility etc.
+
+config USB_CONFIGFS_F_HID
+ boolean "HID function"
+ depends on USB_CONFIGFS
+ select USB_F_HID
+ help
+ The HID function driver provides generic emulation of USB
+ Human Interface Devices (HID).
+
+ For more information, see Documentation/usb/gadget_hid.txt.
+
source "drivers/usb/gadget/legacy/Kconfig"
endchoice
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index f6a51fddd5b5..617835348569 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1246,10 +1246,49 @@ EXPORT_SYMBOL_GPL(usb_string_ids_n);
static void composite_setup_complete(struct usb_ep *ep, struct usb_request *req)
{
+ struct usb_composite_dev *cdev;
+
if (req->status || req->actual != req->length)
DBG((struct usb_composite_dev *) ep->driver_data,
"setup complete --> %d, %d/%d\n",
req->status, req->actual, req->length);
+
+ /*
+ * REVIST The same ep0 requests are shared with function drivers
+ * so they don't have to maintain the same ->complete() stubs.
+ *
+ * Because of that, we need to check for the validity of ->context
+ * here, even though we know we've set it to something useful.
+ */
+ if (!req->context)
+ return;
+
+ cdev = req->context;
+
+ if (cdev->req == req)
+ cdev->setup_pending = false;
+ else if (cdev->os_desc_req == req)
+ cdev->os_desc_pending = false;
+ else
+ WARN(1, "unknown request %p\n", req);
+}
+
+static int composite_ep0_queue(struct usb_composite_dev *cdev,
+ struct usb_request *req, gfp_t gfp_flags)
+{
+ int ret;
+
+ ret = usb_ep_queue(cdev->gadget->ep0, req, gfp_flags);
+ if (ret == 0) {
+ if (cdev->req == req)
+ cdev->setup_pending = true;
+ else if (cdev->os_desc_req == req)
+ cdev->os_desc_pending = true;
+ else
+ WARN(1, "unknown request %p\n", req);
+ }
+
+ return ret;
}
static int count_ext_compat(struct usb_configuration *c)
@@ -1428,6 +1467,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
* when we delegate to it.
*/
req->zero = 0;
+ req->context = cdev;
req->complete = composite_setup_complete;
req->length = 0;
gadget->ep0->driver_data = cdev;
@@ -1624,6 +1664,7 @@ unknown:
int count = 0;
req = cdev->os_desc_req;
+ req->context = cdev;
req->complete = composite_setup_complete;
buf = req->buf;
os_desc_cfg = cdev->os_desc_config;
@@ -1686,8 +1727,9 @@ unknown:
break;
}
req->length = value;
+ req->context = cdev;
req->zero = value < w_length;
- value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
+ value = composite_ep0_queue(cdev, req, GFP_ATOMIC);
if (value < 0) {
DBG(cdev, "ep_queue --> %d\n", value);
req->status = 0;
@@ -1757,8 +1799,9 @@ unknown:
/* respond with data transfer before status phase? */
if (value >= 0 && value != USB_GADGET_DELAYED_STATUS) {
req->length = value;
+ req->context = cdev;
req->zero = value < w_length;
- value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
+ value = composite_ep0_queue(cdev, req, GFP_ATOMIC);
if (value < 0) {
DBG(cdev, "ep_queue --> %d\n", value);
req->status = 0;
@@ -1893,6 +1936,7 @@ int composite_dev_prepare(struct usb_composite_driver *composite,
goto fail_dev;
cdev->req->complete = composite_setup_complete;
+ cdev->req->context = cdev;
gadget->ep0->driver_data = cdev;
cdev->driver = composite;
@@ -1937,6 +1981,7 @@ int composite_os_desc_req_prepare(struct usb_composite_dev *cdev,
kfree(cdev->os_desc_req);
goto end;
}
+ cdev->os_desc_req->context = cdev;
cdev->os_desc_req->complete = composite_setup_complete;
end:
return ret;
@@ -1951,10 +1996,16 @@ void composite_dev_cleanup(struct usb_composite_dev *cdev)
kfree(uc);
}
if (cdev->os_desc_req) {
+ if (cdev->os_desc_pending)
+ usb_ep_dequeue(cdev->gadget->ep0, cdev->os_desc_req);
+
kfree(cdev->os_desc_req->buf);
usb_ep_free_request(cdev->gadget->ep0, cdev->os_desc_req);
}
if (cdev->req) {
+ if (cdev->setup_pending)
+ usb_ep_dequeue(cdev->gadget->ep0, cdev->req);
+
kfree(cdev->req->buf);
usb_ep_free_request(cdev->gadget->ep0, cdev->req);
}
@@ -2013,8 +2064,7 @@ fail:
/*-------------------------------------------------------------------------*/
-static void
-composite_suspend(struct usb_gadget *gadget)
+void composite_suspend(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev = get_gadget_data(gadget);
struct usb_function *f;
@@ -2037,8 +2087,7 @@ composite_suspend(struct usb_gadget *gadget)
usb_gadget_vbus_draw(gadget, 2);
}
-static void
-composite_resume(struct usb_gadget *gadget)
+void composite_resume(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev = get_gadget_data(gadget);
struct usb_function *f;
@@ -2158,7 +2207,8 @@ void usb_composite_setup_continue(struct usb_composite_dev *cdev)
} else if (--cdev->delayed_status == 0) {
DBG(cdev, "%s: Completing delayed status\n", __func__);
req->length = 0;
- value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
+ req->context = cdev;
+ value = composite_ep0_queue(cdev, req, GFP_ATOMIC);
if (value < 0) {
DBG(cdev, "ep_queue --> %d\n", value);
req->status = 0;
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 34034333f7f6..75648145dc1b 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -271,7 +271,7 @@ static ssize_t gadget_dev_desc_UDC_store(struct gadget_info *gi,
ret = -EBUSY;
goto err;
}
- ret = udc_attach_driver(name, &gi->composite.gadget_driver);
+ ret = usb_udc_attach_driver(name, &gi->composite.gadget_driver);
if (ret)
goto err;
gi->udc_name = name;
@@ -1453,6 +1453,9 @@ static const struct usb_gadget_driver configfs_driver_template = {
.reset = composite_disconnect,
.disconnect = composite_disconnect,
+ .suspend = composite_suspend,
+ .resume = composite_resume,
+
.max_speed = USB_SPEED_SUPER,
.driver = {
.owner = THIS_MODULE,
diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile
index 90701aa5a826..dd68091d92f0 100644
--- a/drivers/usb/gadget/function/Makefile
+++ b/drivers/usb/gadget/function/Makefile
@@ -38,3 +38,7 @@ usb_f_uac2-y := f_uac2.o
obj-$(CONFIG_USB_F_UAC2) += usb_f_uac2.o
usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o
obj-$(CONFIG_USB_F_UVC) += usb_f_uvc.o
+usb_f_midi-y := f_midi.o
+obj-$(CONFIG_USB_F_MIDI) += usb_f_midi.o
+usb_f_hid-y := f_hid.o
+obj-$(CONFIG_USB_F_HID) += usb_f_hid.o
diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index ea2b9c374305..6e04e302dc3a 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/hid.h>
+#include <linux/idr.h>
#include <linux/cdev.h>
#include <linux/mutex.h>
#include <linux/poll.h>
@@ -21,9 +22,14 @@
#include <linux/usb/g_hid.h>
#include "u_f.h"
+#include "u_hid.h"
+
+#define HIDG_MINORS 4
static int major, minors;
static struct class *hidg_class;
+static DEFINE_IDA(hidg_ida);
+static DEFINE_MUTEX(hidg_ida_lock); /* protects access to hidg_ida */
/*-------------------------------------------------------------------------*/
/* HID gadget struct */
@@ -161,6 +167,26 @@ static struct usb_descriptor_header *hidg_fs_descriptors[] = {
};
/*-------------------------------------------------------------------------*/
+/* Strings */
+
+#define CT_FUNC_HID_IDX 0
+
+static struct usb_string ct_func_string_defs[] = {
+ [CT_FUNC_HID_IDX].s = "HID Interface",
+ {}, /* end of list */
+};
+
+static struct usb_gadget_strings ct_func_string_table = {
+ .language = 0x0409, /* en-US */
+ .strings = ct_func_string_defs,
+};
+
+static struct usb_gadget_strings *ct_func_strings[] = {
+ &ct_func_string_table,
+ NULL,
+};
+
+/*-------------------------------------------------------------------------*/
/* Char Device */
static ssize_t f_hidg_read(struct file *file, char __user *buffer,
@@ -552,13 +578,22 @@ const struct file_operations f_hidg_fops = {
.llseek = noop_llseek,
};
-static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f)
+static int hidg_bind(struct usb_configuration *c, struct usb_function *f)
{
struct usb_ep *ep;
struct f_hidg *hidg = func_to_hidg(f);
+ struct usb_string *us;
+ struct device *device;
int status;
dev_t dev;
+ /* maybe allocate device-global string IDs, and patch descriptors */
+ us = usb_gstrings_attach(c->cdev, ct_func_strings,
+ ARRAY_SIZE(ct_func_string_defs));
+ if (IS_ERR(us))
+ return PTR_ERR(us);
+ hidg_interface_desc.iInterface = us[CT_FUNC_HID_IDX].id;
+
/* allocate instance-specific interface IDs, and patch descriptors */
status = usb_interface_id(c, f);
if (status < 0)
@@ -623,10 +658,16 @@ static int __init hidg_bind(struct usb_configuration *c, struct usb_function *f)
if (status)
goto fail_free_descs;
- device_create(hidg_class, NULL, dev, NULL, "%s%d", "hidg", hidg->minor);
+ device = device_create(hidg_class, NULL, dev, NULL,
+ "%s%d", "hidg", hidg->minor);
+ if (IS_ERR(device)) {
+ status = PTR_ERR(device);
+ goto del;
+ }
return 0;
-
+del:
+ cdev_del(&hidg->cdev);
fail_free_descs:
usb_free_all_descriptors(f);
fail:
@@ -640,116 +681,313 @@ fail:
return status;
}
-static void hidg_unbind(struct usb_configuration *c, struct usb_function *f)
+static inline int hidg_get_minor(void)
{
- struct f_hidg *hidg = func_to_hidg(f);
+ int ret;
- device_destroy(hidg_class, MKDEV(major, hidg->minor));
- cdev_del(&hidg->cdev);
+ ret = ida_simple_get(&hidg_ida, 0, 0, GFP_KERNEL);
- /* disable/free request and end point */
- usb_ep_disable(hidg->in_ep);
- usb_ep_dequeue(hidg->in_ep, hidg->req);
- kfree(hidg->req->buf);
- usb_ep_free_request(hidg->in_ep, hidg->req);
-
- usb_free_all_descriptors(f);
+ return ret;
+}
- kfree(hidg->report_desc);
- kfree(hidg);
+static inline struct f_hid_opts *to_f_hid_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_hid_opts,
+ func_inst.group);
}
-/*-------------------------------------------------------------------------*/
-/* Strings */
+CONFIGFS_ATTR_STRUCT(f_hid_opts);
+CONFIGFS_ATTR_OPS(f_hid_opts);
-#define CT_FUNC_HID_IDX 0
+static void hid_attr_release(struct config_item *item)
+{
+ struct f_hid_opts *opts = to_f_hid_opts(item);
-static struct usb_string ct_func_string_defs[] = {
- [CT_FUNC_HID_IDX].s = "HID Interface",
- {}, /* end of list */
-};
+ usb_put_function_instance(&opts->func_inst);
+}
-static struct usb_gadget_strings ct_func_string_table = {
- .language = 0x0409, /* en-US */
- .strings = ct_func_string_defs,
+static struct configfs_item_operations hidg_item_ops = {
+ .release = hid_attr_release,
+ .show_attribute = f_hid_opts_attr_show,
+ .store_attribute = f_hid_opts_attr_store,
};
-static struct usb_gadget_strings *ct_func_strings[] = {
- &ct_func_string_table,
+#define F_HID_OPT(name, prec, limit) \
+static ssize_t f_hid_opts_##name##_show(struct f_hid_opts *opts, char *page)\
+{ \
+ int result; \
+ \
+ mutex_lock(&opts->lock); \
+ result = sprintf(page, "%d\n", opts->name); \
+ mutex_unlock(&opts->lock); \
+ \
+ return result; \
+} \
+ \
+static ssize_t f_hid_opts_##name##_store(struct f_hid_opts *opts, \
+ const char *page, size_t len) \
+{ \
+ int ret; \
+ u##prec num; \
+ \
+ mutex_lock(&opts->lock); \
+ if (opts->refcnt) { \
+ ret = -EBUSY; \
+ goto end; \
+ } \
+ \
+ ret = kstrtou##prec(page, 0, &num); \
+ if (ret) \
+ goto end; \
+ \
+ if (num > limit) { \
+ ret = -EINVAL; \
+ goto end; \
+ } \
+ opts->name = num; \
+ ret = len; \
+ \
+end: \
+ mutex_unlock(&opts->lock); \
+ return ret; \
+} \
+ \
+static struct f_hid_opts_attribute f_hid_opts_##name = \
+ __CONFIGFS_ATTR(name, S_IRUGO | S_IWUSR, f_hid_opts_##name##_show,\
+ f_hid_opts_##name##_store)
+
+F_HID_OPT(subclass, 8, 255);
+F_HID_OPT(protocol, 8, 255);
+F_HID_OPT(report_length, 16, 65536);
+
+static ssize_t f_hid_opts_report_desc_show(struct f_hid_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = opts->report_desc_length;
+ memcpy(page, opts->report_desc, opts->report_desc_length);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t f_hid_opts_report_desc_store(struct f_hid_opts *opts,
+ const char *page, size_t len)
+{
+ int ret = -EBUSY;
+ char *d;
+
+ mutex_lock(&opts->lock);
+
+ if (opts->refcnt)
+ goto end;
+ if (len > PAGE_SIZE) {
+ ret = -ENOSPC;
+ goto end;
+ }
+ d = kmemdup(page, len, GFP_KERNEL);
+ if (!d) {
+ ret = -ENOMEM;
+ goto end;
+ }
+ kfree(opts->report_desc);
+ opts->report_desc = d;
+ opts->report_desc_length = len;
+ opts->report_desc_alloc = true;
+ ret = len;
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct f_hid_opts_attribute f_hid_opts_report_desc =
+ __CONFIGFS_ATTR(report_desc, S_IRUGO | S_IWUSR,
+ f_hid_opts_report_desc_show,
+ f_hid_opts_report_desc_store);
+
+static struct configfs_attribute *hid_attrs[] = {
+ &f_hid_opts_subclass.attr,
+ &f_hid_opts_protocol.attr,
+ &f_hid_opts_report_length.attr,
+ &f_hid_opts_report_desc.attr,
NULL,
};
-/*-------------------------------------------------------------------------*/
-/* usb_configuration */
+static struct config_item_type hid_func_type = {
+ .ct_item_ops = &hidg_item_ops,
+ .ct_attrs = hid_attrs,
+ .ct_owner = THIS_MODULE,
+};
-int __init hidg_bind_config(struct usb_configuration *c,
- struct hidg_func_descriptor *fdesc, int index)
+static inline void hidg_put_minor(int minor)
{
- struct f_hidg *hidg;
- int status;
+ ida_simple_remove(&hidg_ida, minor);
+}
- if (index >= minors)
- return -ENOENT;
+static void hidg_free_inst(struct usb_function_instance *f)
+{
+ struct f_hid_opts *opts;
- /* maybe allocate device-global string IDs, and patch descriptors */
- if (ct_func_string_defs[CT_FUNC_HID_IDX].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- return status;
- ct_func_string_defs[CT_FUNC_HID_IDX].id = status;
- hidg_interface_desc.iInterface = status;
+ opts = container_of(f, struct f_hid_opts, func_inst);
+
+ mutex_lock(&hidg_ida_lock);
+
+ hidg_put_minor(opts->minor);
+ if (idr_is_empty(&hidg_ida.idr))
+ ghid_cleanup();
+
+ mutex_unlock(&hidg_ida_lock);
+
+ if (opts->report_desc_alloc)
+ kfree(opts->report_desc);
+
+ kfree(opts);
+}
+
+static struct usb_function_instance *hidg_alloc_inst(void)
+{
+ struct f_hid_opts *opts;
+ struct usb_function_instance *ret;
+ int status = 0;
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+ mutex_init(&opts->lock);
+ opts->func_inst.free_func_inst = hidg_free_inst;
+ ret = &opts->func_inst;
+
+ mutex_lock(&hidg_ida_lock);
+
+ if (idr_is_empty(&hidg_ida.idr)) {
+ status = ghid_setup(NULL, HIDG_MINORS);
+ if (status) {
+ ret = ERR_PTR(status);
+ kfree(opts);
+ goto unlock;
+ }
+ }
+
+ opts->minor = hidg_get_minor();
+ if (opts->minor < 0) {
+ ret = ERR_PTR(opts->minor);
+ kfree(opts);
+ if (idr_is_empty(&hidg_ida.idr))
+ ghid_cleanup();
+ goto unlock;
}
+ config_group_init_type_name(&opts->func_inst.group, "", &hid_func_type);
+
+unlock:
+ mutex_unlock(&hidg_ida_lock);
+ return ret;
+}
+
+static void hidg_free(struct usb_function *f)
+{
+ struct f_hidg *hidg;
+ struct f_hid_opts *opts;
+
+ hidg = func_to_hidg(f);
+ opts = container_of(f->fi, struct f_hid_opts, func_inst);
+ kfree(hidg->report_desc);
+ kfree(hidg);
+ mutex_lock(&opts->lock);
+ --opts->refcnt;
+ mutex_unlock(&opts->lock);
+}
+
+static void hidg_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct f_hidg *hidg = func_to_hidg(f);
+
+ device_destroy(hidg_class, MKDEV(major, hidg->minor));
+ cdev_del(&hidg->cdev);
+
+ /* disable/free request and end point */
+ usb_ep_disable(hidg->in_ep);
+ usb_ep_dequeue(hidg->in_ep, hidg->req);
+ kfree(hidg->req->buf);
+ usb_ep_free_request(hidg->in_ep, hidg->req);
+
+ usb_free_all_descriptors(f);
+}
+
+static struct usb_function *hidg_alloc(struct usb_function_instance *fi)
+{
+ struct f_hidg *hidg;
+ struct f_hid_opts *opts;
/* allocate and initialize one new instance */
- hidg = kzalloc(sizeof *hidg, GFP_KERNEL);
+ hidg = kzalloc(sizeof(*hidg), GFP_KERNEL);
if (!hidg)
- return -ENOMEM;
-
- hidg->minor = index;
- hidg->bInterfaceSubClass = fdesc->subclass;
- hidg->bInterfaceProtocol = fdesc->protocol;
- hidg->report_length = fdesc->report_length;
- hidg->report_desc_length = fdesc->report_desc_length;
- hidg->report_desc = kmemdup(fdesc->report_desc,
- fdesc->report_desc_length,
- GFP_KERNEL);
- if (!hidg->report_desc) {
- kfree(hidg);
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
+
+ opts = container_of(fi, struct f_hid_opts, func_inst);
+
+ mutex_lock(&opts->lock);
+ ++opts->refcnt;
+
+ hidg->minor = opts->minor;
+ hidg->bInterfaceSubClass = opts->subclass;
+ hidg->bInterfaceProtocol = opts->protocol;
+ hidg->report_length = opts->report_length;
+ hidg->report_desc_length = opts->report_desc_length;
+ if (opts->report_desc) {
+ hidg->report_desc = kmemdup(opts->report_desc,
+ opts->report_desc_length,
+ GFP_KERNEL);
+ if (!hidg->report_desc) {
+ kfree(hidg);
+ mutex_unlock(&opts->lock);
+ return ERR_PTR(-ENOMEM);
+ }
}
+ mutex_unlock(&opts->lock);
+
hidg->func.name = "hid";
- hidg->func.strings = ct_func_strings;
hidg->func.bind = hidg_bind;
hidg->func.unbind = hidg_unbind;
hidg->func.set_alt = hidg_set_alt;
hidg->func.disable = hidg_disable;
hidg->func.setup = hidg_setup;
+ hidg->func.free_func = hidg_free;
/* this could me made configurable at some point */
hidg->qlen = 4;
- status = usb_add_function(c, &hidg->func);
- if (status)
- kfree(hidg);
-
- return status;
+ return &hidg->func;
}
-int __init ghid_setup(struct usb_gadget *g, int count)
+DECLARE_USB_FUNCTION_INIT(hid, hidg_alloc_inst, hidg_alloc);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Fabien Chouteau");
+
+int ghid_setup(struct usb_gadget *g, int count)
{
int status;
dev_t dev;
hidg_class = class_create(THIS_MODULE, "hidg");
+ if (IS_ERR(hidg_class)) {
+ status = PTR_ERR(hidg_class);
+ hidg_class = NULL;
+ return status;
+ }
status = alloc_chrdev_region(&dev, 0, count, "hidg");
- if (!status) {
- major = MAJOR(dev);
- minors = count;
+ if (status) {
+ class_destroy(hidg_class);
+ hidg_class = NULL;
+ return status;
}
- return status;
+ major = MAJOR(dev);
+ minors = count;
+
+ return 0;
}
void ghid_cleanup(void)
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index 807b31c0edc3..a90440300735 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -20,6 +20,7 @@
*/
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <linux/device.h>
@@ -33,6 +34,7 @@
#include <linux/usb/midi.h>
#include "u_f.h"
+#include "u_midi.h"
MODULE_AUTHOR("Ben Williamson");
MODULE_LICENSE("GPL v2");
@@ -99,7 +101,7 @@ DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1);
DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(16);
/* B.3.1 Standard AC Interface Descriptor */
-static struct usb_interface_descriptor ac_interface_desc __initdata = {
+static struct usb_interface_descriptor ac_interface_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
/* .bInterfaceNumber = DYNAMIC */
@@ -110,7 +112,7 @@ static struct usb_interface_descriptor ac_interface_desc __initdata = {
};
/* B.3.2 Class-Specific AC Interface Descriptor */
-static struct uac1_ac_header_descriptor_1 ac_header_desc __initdata = {
+static struct uac1_ac_header_descriptor_1 ac_header_desc = {
.bLength = UAC_DT_AC_HEADER_SIZE(1),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubtype = USB_MS_HEADER,
@@ -121,7 +123,7 @@ static struct uac1_ac_header_descriptor_1 ac_header_desc __initdata = {
};
/* B.4.1 Standard MS Interface Descriptor */
-static struct usb_interface_descriptor ms_interface_desc __initdata = {
+static struct usb_interface_descriptor ms_interface_desc = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
/* .bInterfaceNumber = DYNAMIC */
@@ -132,7 +134,7 @@ static struct usb_interface_descriptor ms_interface_desc __initdata = {
};
/* B.4.2 Class-Specific MS Interface Descriptor */
-static struct usb_ms_header_descriptor ms_header_desc __initdata = {
+static struct usb_ms_header_descriptor ms_header_desc = {
.bLength = USB_DT_MS_HEADER_SIZE,
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubtype = USB_MS_HEADER,
@@ -387,29 +389,6 @@ static void f_midi_disable(struct usb_function *f)
usb_ep_disable(midi->out_ep);
}
-static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
-{
- struct usb_composite_dev *cdev = f->config->cdev;
- struct f_midi *midi = func_to_midi(f);
- struct snd_card *card;
-
- DBG(cdev, "unbind\n");
-
- /* just to be sure */
- f_midi_disable(f);
-
- card = midi->card;
- midi->card = NULL;
- if (card)
- snd_card_free(card);
-
- kfree(midi->id);
- midi->id = NULL;
-
- usb_free_all_descriptors(f);
- kfree(midi);
-}
-
static int f_midi_snd_free(struct snd_device *device)
{
return 0;
@@ -654,6 +633,14 @@ static struct snd_rawmidi_ops gmidi_out_ops = {
.trigger = f_midi_out_trigger
};
+static inline void f_midi_unregister_card(struct f_midi *midi)
+{
+ if (midi->card) {
+ snd_card_free(midi->card);
+ midi->card = NULL;
+ }
+}
+
/* register as a sound "card" */
static int f_midi_register_card(struct f_midi *midi)
{
@@ -715,17 +702,13 @@ static int f_midi_register_card(struct f_midi *midi)
return 0;
fail:
- if (midi->card) {
- snd_card_free(midi->card);
- midi->card = NULL;
- }
+ f_midi_unregister_card(midi);
return err;
}
/* MIDI function driver setup/binding */
-static int __init
-f_midi_bind(struct usb_configuration *c, struct usb_function *f)
+static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
{
struct usb_descriptor_header **midi_function;
struct usb_midi_in_jack_descriptor jack_in_ext_desc[MAX_PORTS];
@@ -734,15 +717,23 @@ f_midi_bind(struct usb_configuration *c, struct usb_function *f)
struct usb_midi_out_jack_descriptor_1 jack_out_emb_desc[MAX_PORTS];
struct usb_composite_dev *cdev = c->cdev;
struct f_midi *midi = func_to_midi(f);
+ struct usb_string *us;
int status, n, jack = 1, i = 0;
+ midi->gadget = cdev->gadget;
+ tasklet_init(&midi->tasklet, f_midi_in_tasklet, (unsigned long) midi);
+ status = f_midi_register_card(midi);
+ if (status < 0)
+ goto fail_register;
+
/* maybe allocate device-global string ID */
- if (midi_string_defs[0].id == 0) {
- status = usb_string_id(c->cdev);
- if (status < 0)
- goto fail;
- midi_string_defs[0].id = status;
+ us = usb_gstrings_attach(c->cdev, midi_strings,
+ ARRAY_SIZE(midi_string_defs));
+ if (IS_ERR(us)) {
+ status = PTR_ERR(us);
+ goto fail;
}
+ ac_interface_desc.iInterface = us[STRING_FUNC_IDX].id;
/* We have two interfaces, AudioControl and MIDIStreaming */
status = usb_interface_id(c, f);
@@ -892,6 +883,8 @@ fail_f_midi:
kfree(midi_function);
usb_free_descriptors(f->hs_descriptors);
fail:
+ f_midi_unregister_card(midi);
+fail_register:
/* we might as well release our claims on endpoints */
if (midi->out_ep)
midi->out_ep->driver_data = NULL;
@@ -903,42 +896,235 @@ fail:
return status;
}
-/**
- * f_midi_bind_config - add USB MIDI function to a configuration
- * @c: the configuration to supcard the USB audio function
- * @index: the soundcard index to use for the ALSA device creation
- * @id: the soundcard id to use for the ALSA device creation
- * @buflen: the buffer length to use
- * @qlen the number of read requests to pre-allocate
- * Context: single threaded during gadget setup
- *
- * Returns zero on success, else negative errno.
- */
-int __init f_midi_bind_config(struct usb_configuration *c,
- int index, char *id,
- unsigned int in_ports,
- unsigned int out_ports,
- unsigned int buflen,
- unsigned int qlen)
+static inline struct f_midi_opts *to_f_midi_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_midi_opts,
+ func_inst.group);
+}
+
+CONFIGFS_ATTR_STRUCT(f_midi_opts);
+CONFIGFS_ATTR_OPS(f_midi_opts);
+
+static void midi_attr_release(struct config_item *item)
+{
+ struct f_midi_opts *opts = to_f_midi_opts(item);
+
+ usb_put_function_instance(&opts->func_inst);
+}
+
+static struct configfs_item_operations midi_item_ops = {
+ .release = midi_attr_release,
+ .show_attribute = f_midi_opts_attr_show,
+ .store_attribute = f_midi_opts_attr_store,
+};
+
+#define F_MIDI_OPT(name, test_limit, limit) \
+static ssize_t f_midi_opts_##name##_show(struct f_midi_opts *opts, char *page) \
+{ \
+ int result; \
+ \
+ mutex_lock(&opts->lock); \
+ result = sprintf(page, "%d\n", opts->name); \
+ mutex_unlock(&opts->lock); \
+ \
+ return result; \
+} \
+ \
+static ssize_t f_midi_opts_##name##_store(struct f_midi_opts *opts, \
+ const char *page, size_t len) \
+{ \
+ int ret; \
+ u32 num; \
+ \
+ mutex_lock(&opts->lock); \
+ if (opts->refcnt) { \
+ ret = -EBUSY; \
+ goto end; \
+ } \
+ \
+ ret = kstrtou32(page, 0, &num); \
+ if (ret) \
+ goto end; \
+ \
+ if (test_limit && num > limit) { \
+ ret = -EINVAL; \
+ goto end; \
+ } \
+ opts->name = num; \
+ ret = len; \
+ \
+end: \
+ mutex_unlock(&opts->lock); \
+ return ret; \
+} \
+ \
+static struct f_midi_opts_attribute f_midi_opts_##name = \
+ __CONFIGFS_ATTR(name, S_IRUGO | S_IWUSR, f_midi_opts_##name##_show, \
+ f_midi_opts_##name##_store)
+
+F_MIDI_OPT(index, true, SNDRV_CARDS);
+F_MIDI_OPT(buflen, false, 0);
+F_MIDI_OPT(qlen, false, 0);
+F_MIDI_OPT(in_ports, true, MAX_PORTS);
+F_MIDI_OPT(out_ports, true, MAX_PORTS);
+
+static ssize_t f_midi_opts_id_show(struct f_midi_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = strlcpy(page, opts->id, PAGE_SIZE);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t f_midi_opts_id_store(struct f_midi_opts *opts,
+ const char *page, size_t len)
+{
+ int ret;
+ char *c;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+
+ c = kstrndup(page, len, GFP_KERNEL);
+ if (!c) {
+ ret = -ENOMEM;
+ goto end;
+ }
+ if (opts->id_allocated)
+ kfree(opts->id);
+ opts->id = c;
+ opts->id_allocated = true;
+ ret = len;
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct f_midi_opts_attribute f_midi_opts_id =
+ __CONFIGFS_ATTR(id, S_IRUGO | S_IWUSR, f_midi_opts_id_show,
+ f_midi_opts_id_store);
+
+static struct configfs_attribute *midi_attrs[] = {
+ &f_midi_opts_index.attr,
+ &f_midi_opts_buflen.attr,
+ &f_midi_opts_qlen.attr,
+ &f_midi_opts_in_ports.attr,
+ &f_midi_opts_out_ports.attr,
+ &f_midi_opts_id.attr,
+ NULL,
+};
+
+static struct config_item_type midi_func_type = {
+ .ct_item_ops = &midi_item_ops,
+ .ct_attrs = midi_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static void f_midi_free_inst(struct usb_function_instance *f)
+{
+ struct f_midi_opts *opts;
+
+ opts = container_of(f, struct f_midi_opts, func_inst);
+
+ if (opts->id_allocated)
+ kfree(opts->id);
+
+ kfree(opts);
+}
+
+static struct usb_function_instance *f_midi_alloc_inst(void)
+{
+ struct f_midi_opts *opts;
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+
+ mutex_init(&opts->lock);
+ opts->func_inst.free_func_inst = f_midi_free_inst;
+ opts->index = SNDRV_DEFAULT_IDX1;
+ opts->id = SNDRV_DEFAULT_STR1;
+ opts->buflen = 256;
+ opts->qlen = 32;
+ opts->in_ports = 1;
+ opts->out_ports = 1;
+
+ config_group_init_type_name(&opts->func_inst.group, "",
+ &midi_func_type);
+
+ return &opts->func_inst;
+}
+
+static void f_midi_free(struct usb_function *f)
+{
+ struct f_midi *midi;
+ struct f_midi_opts *opts;
+ int i;
+
+ midi = func_to_midi(f);
+ opts = container_of(f->fi, struct f_midi_opts, func_inst);
+ kfree(midi->id);
+ mutex_lock(&opts->lock);
+ for (i = opts->in_ports - 1; i >= 0; --i)
+ kfree(midi->in_port[i]);
+ kfree(midi);
+ --opts->refcnt;
+ mutex_unlock(&opts->lock);
+}
+
+static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct usb_composite_dev *cdev = f->config->cdev;
+ struct f_midi *midi = func_to_midi(f);
+ struct snd_card *card;
+
+ DBG(cdev, "unbind\n");
+
+ /* just to be sure */
+ f_midi_disable(f);
+
+ card = midi->card;
+ midi->card = NULL;
+ if (card)
+ snd_card_free(card);
+
+ usb_free_all_descriptors(f);
+}
+
+static struct usb_function *f_midi_alloc(struct usb_function_instance *fi)
{
struct f_midi *midi;
+ struct f_midi_opts *opts;
int status, i;
+ opts = container_of(fi, struct f_midi_opts, func_inst);
+
+ mutex_lock(&opts->lock);
/* sanity check */
- if (in_ports > MAX_PORTS || out_ports > MAX_PORTS)
- return -EINVAL;
+ if (opts->in_ports > MAX_PORTS || opts->out_ports > MAX_PORTS) {
+ mutex_unlock(&opts->lock);
+ return ERR_PTR(-EINVAL);
+ }
/* allocate and initialize one new instance */
- midi = kzalloc(sizeof *midi, GFP_KERNEL);
+ midi = kzalloc(sizeof(*midi), GFP_KERNEL);
if (!midi) {
- status = -ENOMEM;
- goto fail;
+ mutex_unlock(&opts->lock);
+ return ERR_PTR(-ENOMEM);
}
- for (i = 0; i < in_ports; i++) {
+ for (i = 0; i < opts->in_ports; i++) {
struct gmidi_in_port *port = kzalloc(sizeof(*port), GFP_KERNEL);
+
if (!port) {
status = -ENOMEM;
+ mutex_unlock(&opts->lock);
goto setup_fail;
}
@@ -948,39 +1134,37 @@ int __init f_midi_bind_config(struct usb_configuration *c,
midi->in_port[i] = port;
}
- midi->gadget = c->cdev->gadget;
- tasklet_init(&midi->tasklet, f_midi_in_tasklet, (unsigned long) midi);
-
/* set up ALSA midi devices */
- midi->in_ports = in_ports;
- midi->out_ports = out_ports;
- status = f_midi_register_card(midi);
- if (status < 0)
- goto setup_fail;
-
- midi->func.name = "gmidi function";
- midi->func.strings = midi_strings;
- midi->func.bind = f_midi_bind;
- midi->func.unbind = f_midi_unbind;
- midi->func.set_alt = f_midi_set_alt;
- midi->func.disable = f_midi_disable;
-
- midi->id = kstrdup(id, GFP_KERNEL);
- midi->index = index;
- midi->buflen = buflen;
- midi->qlen = qlen;
-
- status = usb_add_function(c, &midi->func);
- if (status)
- goto setup_fail;
-
- return 0;
-
+ midi->id = kstrdup(opts->id, GFP_KERNEL);
+ if (opts->id && !midi->id) {
+ status = -ENOMEM;
+ mutex_unlock(&opts->lock);
+ goto kstrdup_fail;
+ }
+ midi->in_ports = opts->in_ports;
+ midi->out_ports = opts->out_ports;
+ midi->index = opts->index;
+ midi->buflen = opts->buflen;
+ midi->qlen = opts->qlen;
+ ++opts->refcnt;
+ mutex_unlock(&opts->lock);
+
+ midi->func.name = "gmidi function";
+ midi->func.bind = f_midi_bind;
+ midi->func.unbind = f_midi_unbind;
+ midi->func.set_alt = f_midi_set_alt;
+ midi->func.disable = f_midi_disable;
+ midi->func.free_func = f_midi_free;
+
+ return &midi->func;
+
+kstrdup_fail:
+ f_midi_unregister_card(midi);
setup_fail:
for (--i; i >= 0; i--)
kfree(midi->in_port[i]);
kfree(midi);
-fail:
- return status;
+ return ERR_PTR(status);
}
+DECLARE_USB_FUNCTION_INIT(midi, f_midi_alloc_inst, f_midi_alloc);
diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c
index 16361b0a8b46..bdcda9f5148e 100644
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@@ -1441,6 +1441,9 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f)
status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function,
NULL);
+ if (status)
+ goto fail;
+
/*
* NOTE: all that is done without knowing or caring about
* the network link ... which is unavailable to this code
diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c
index f13fc6a58565..829edf878dac 100644
--- a/drivers/usb/gadget/function/f_rndis.c
+++ b/drivers/usb/gadget/function/f_rndis.c
@@ -375,8 +375,7 @@ static struct sk_buff *rndis_add_header(struct gether *port,
struct sk_buff *skb2;
skb2 = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type));
- if (skb2)
- rndis_add_hdr(skb2);
+ rndis_add_hdr(skb2);
dev_kfree_skb(skb);
return skb2;
diff --git a/drivers/usb/gadget/function/u_hid.h b/drivers/usb/gadget/function/u_hid.h
new file mode 100644
index 000000000000..aaa0e368a159
--- /dev/null
+++ b/drivers/usb/gadget/function/u_hid.h
@@ -0,0 +1,42 @@
+/*
+ * u_hid.h
+ *
+ * Utility definitions for the hid function
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef U_HID_H
+#define U_HID_H
+
+#include <linux/usb/composite.h>
+
+struct f_hid_opts {
+ struct usb_function_instance func_inst;
+ int minor;
+ unsigned char subclass;
+ unsigned char protocol;
+ unsigned short report_length;
+ unsigned short report_desc_length;
+ unsigned char *report_desc;
+ bool report_desc_alloc;
+
+ /*
+ * Protect the data form concurrent access by read/write
+ * and create symlink/remove symlink.
+ */
+ struct mutex lock;
+ int refcnt;
+};
+
+int ghid_setup(struct usb_gadget *g, int count);
+void ghid_cleanup(void);
+
+#endif /* U_HID_H */
diff --git a/drivers/usb/gadget/function/u_midi.h b/drivers/usb/gadget/function/u_midi.h
new file mode 100644
index 000000000000..22510189758e
--- /dev/null
+++ b/drivers/usb/gadget/function/u_midi.h
@@ -0,0 +1,40 @@
+/*
+ * u_midi.h
+ *
+ * Utility definitions for the midi function
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef U_MIDI_H
+#define U_MIDI_H
+
+#include <linux/usb/composite.h>
+
+struct f_midi_opts {
+ struct usb_function_instance func_inst;
+ int index;
+ char *id;
+ bool id_allocated;
+ unsigned int in_ports;
+ unsigned int out_ports;
+ unsigned int buflen;
+ unsigned int qlen;
+
+ /*
+ * Protect the data form concurrent access by read/write
+ * and create symlink/remove symlink.
+ */
+ struct mutex lock;
+ int refcnt;
+};
+
+#endif /* U_MIDI_H */
+
diff --git a/drivers/usb/gadget/function/u_uac1.c b/drivers/usb/gadget/function/u_uac1.c
index a44a07f30281..53842a1b947f 100644
--- a/drivers/usb/gadget/function/u_uac1.c
+++ b/drivers/usb/gadget/function/u_uac1.c
@@ -213,9 +213,6 @@ static int gaudio_open_snd_dev(struct gaudio *card)
fn_cap = opts->fn_cap;
fn_cntl = opts->fn_cntl;
- if (!card)
- return -ENODEV;
-
/* Open control device */
snd = &card->control;
snd->filp = filp_open(fn_cntl, O_RDWR, 0);
diff --git a/drivers/usb/gadget/legacy/Kconfig b/drivers/usb/gadget/legacy/Kconfig
index 24392d269709..fd48ef3af4eb 100644
--- a/drivers/usb/gadget/legacy/Kconfig
+++ b/drivers/usb/gadget/legacy/Kconfig
@@ -287,6 +287,7 @@ config USB_MIDI_GADGET
depends on SND
select USB_LIBCOMPOSITE
select SND_RAWMIDI
+ select USB_F_MIDI
help
The MIDI Gadget acts as a USB Audio device, with one MIDI
input and one MIDI output. These MIDI jacks appear as
@@ -419,6 +420,7 @@ endif # TTY
config USB_G_HID
tristate "HID Gadget"
select USB_LIBCOMPOSITE
+ select USB_F_HID
help
The HID gadget driver provides generic emulation of USB
Human Interface Devices (HID).
diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c
index 1b075132f8f1..633683a72a11 100644
--- a/drivers/usb/gadget/legacy/dbgp.c
+++ b/drivers/usb/gadget/legacy/dbgp.c
@@ -237,7 +237,7 @@ static void dbgp_unbind(struct usb_gadget *gadget)
static unsigned char tty_line;
#endif
-static int __init dbgp_configure_endpoints(struct usb_gadget *gadget)
+static int dbgp_configure_endpoints(struct usb_gadget *gadget)
{
int stp;
@@ -273,19 +273,10 @@ static int __init dbgp_configure_endpoints(struct usb_gadget *gadget)
dbgp.serial->in->desc = &i_desc;
dbgp.serial->out->desc = &o_desc;
-
- if (gserial_alloc_line(&tty_line)) {
- stp = 3;
- goto fail_3;
- }
+#endif
return 0;
-fail_3:
- dbgp.o_ep->driver_data = NULL;
-#else
- return 0;
-#endif
fail_2:
dbgp.i_ep->driver_data = NULL;
fail_1:
@@ -324,10 +315,17 @@ static int __init dbgp_bind(struct usb_gadget *gadget,
err = -ENOMEM;
goto fail;
}
+
+ if (gserial_alloc_line(&tty_line)) {
+ stp = 4;
+ err = -ENODEV;
+ goto fail;
+ }
#endif
+
err = dbgp_configure_endpoints(gadget);
if (err < 0) {
- stp = 4;
+ stp = 5;
goto fail;
}
@@ -383,6 +381,10 @@ static int dbgp_setup(struct usb_gadget *gadget,
#ifdef CONFIG_USB_G_DBGP_PRINTK
err = dbgp_enable_ep();
#else
+ err = dbgp_configure_endpoints(gadget);
+ if (err < 0) {
+ goto fail;
+ }
err = gserial_connect(dbgp.serial, tty_line);
#endif
if (err < 0)
diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c
index 3d696b86ff76..e02a095294ac 100644
--- a/drivers/usb/gadget/legacy/gmidi.c
+++ b/drivers/usb/gadget/legacy/gmidi.c
@@ -37,7 +37,7 @@
#include "gadget_chips.h"
-#include "f_midi.c"
+#include "u_midi.h"
/*-------------------------------------------------------------------------*/
@@ -115,8 +115,13 @@ static struct usb_gadget_strings *dev_strings[] = {
NULL,
};
+static struct usb_function_instance *fi_midi;
+static struct usb_function *f_midi;
+
static int __exit midi_unbind(struct usb_composite_dev *dev)
{
+ usb_put_function(f_midi);
+ usb_put_function_instance(fi_midi);
return 0;
}
@@ -130,28 +135,54 @@ static struct usb_configuration midi_config = {
static int __init midi_bind_config(struct usb_configuration *c)
{
- return f_midi_bind_config(c, index, id,
- in_ports, out_ports,
- buflen, qlen);
+ int status;
+
+ f_midi = usb_get_function(fi_midi);
+ if (IS_ERR(f_midi))
+ return PTR_ERR(f_midi);
+
+ status = usb_add_function(c, f_midi);
+ if (status < 0) {
+ usb_put_function(f_midi);
+ return status;
+ }
+
+ return 0;
}
static int __init midi_bind(struct usb_composite_dev *cdev)
{
+ struct f_midi_opts *midi_opts;
int status;
+ fi_midi = usb_get_function_instance("midi");
+ if (IS_ERR(fi_midi))
+ return PTR_ERR(fi_midi);
+
+ midi_opts = container_of(fi_midi, struct f_midi_opts, func_inst);
+ midi_opts->index = index;
+ midi_opts->id = id;
+ midi_opts->in_ports = in_ports;
+ midi_opts->out_ports = out_ports;
+ midi_opts->buflen = buflen;
+ midi_opts->qlen = qlen;
+
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
- return status;
+ goto put;
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
midi_config.iConfiguration = strings_dev[STRING_DESCRIPTION_IDX].id;
status = usb_add_config(cdev, &midi_config, midi_bind_config);
if (status < 0)
- return status;
+ goto put;
usb_composite_overwrite_options(cdev, &coverwrite);
pr_info("%s\n", longname);
return 0;
+put:
+ usb_put_function_instance(fi_midi);
+ return status;
}
static __refdata struct usb_composite_driver midi_driver = {
diff --git a/drivers/usb/gadget/legacy/hid.c b/drivers/usb/gadget/legacy/hid.c
index 778613eb37af..633fe7e07688 100644
--- a/drivers/usb/gadget/legacy/hid.c
+++ b/drivers/usb/gadget/legacy/hid.c
@@ -17,11 +17,14 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/usb/composite.h>
+#include <linux/usb/g_hid.h>
#include "gadget_chips.h"
#define DRIVER_DESC "HID Gadget"
#define DRIVER_VERSION "2010/03/16"
+#include "u_hid.h"
+
/*-------------------------------------------------------------------------*/
#define HIDG_VENDOR_NUM 0x0525 /* XXX NetChip */
@@ -29,17 +32,9 @@
/*-------------------------------------------------------------------------*/
-/*
- * kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#include "f_hid.c"
-
-
struct hidg_func_node {
+ struct usb_function_instance *fi;
+ struct usb_function *f;
struct list_head node;
struct hidg_func_descriptor *func;
};
@@ -113,8 +108,8 @@ static struct usb_gadget_strings *dev_strings[] = {
static int __init do_config(struct usb_configuration *c)
{
- struct hidg_func_node *e;
- int func = 0, status = 0;
+ struct hidg_func_node *e, *n;
+ int status = 0;
if (gadget_is_otg(c->cdev->gadget)) {
c->descriptors = otg_desc;
@@ -122,11 +117,24 @@ static int __init do_config(struct usb_configuration *c)
}
list_for_each_entry(e, &hidg_func_list, node) {
- status = hidg_bind_config(c, e->func, func++);
- if (status)
- break;
+ e->f = usb_get_function(e->fi);
+ if (IS_ERR(e->f))
+ goto put;
+ status = usb_add_function(c, e->f);
+ if (status < 0) {
+ usb_put_function(e->f);
+ goto put;
+ }
}
+ return 0;
+put:
+ list_for_each_entry(n, &hidg_func_list, node) {
+ if (n == e)
+ break;
+ usb_remove_function(c, n->f);
+ usb_put_function(n->f);
+ }
return status;
}
@@ -143,6 +151,8 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
struct list_head *tmp;
+ struct hidg_func_node *n, *m;
+ struct f_hid_opts *hid_opts;
int status, funcs = 0;
list_for_each(tmp, &hidg_func_list)
@@ -151,10 +161,20 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
if (!funcs)
return -ENODEV;
- /* set up HID */
- status = ghid_setup(cdev->gadget, funcs);
- if (status < 0)
- return status;
+ list_for_each_entry(n, &hidg_func_list, node) {
+ n->fi = usb_get_function_instance("hid");
+ if (IS_ERR(n->fi)) {
+ status = PTR_ERR(n->fi);
+ goto put;
+ }
+ hid_opts = container_of(n->fi, struct f_hid_opts, func_inst);
+ hid_opts->subclass = n->func->subclass;
+ hid_opts->protocol = n->func->protocol;
+ hid_opts->report_length = n->func->report_length;
+ hid_opts->report_desc_length = n->func->report_desc_length;
+ hid_opts->report_desc = n->func->report_desc;
+ }
+
/* Allocate string descriptor numbers ... note that string
* contents can be overridden by the composite_dev glue.
@@ -162,24 +182,37 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
- return status;
+ goto put;
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
/* register our configuration */
status = usb_add_config(cdev, &config_driver, do_config);
if (status < 0)
- return status;
+ goto put;
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
return 0;
+
+put:
+ list_for_each_entry(m, &hidg_func_list, node) {
+ if (m == n)
+ break;
+ usb_put_function_instance(m->fi);
+ }
+ return status;
}
static int __exit hid_unbind(struct usb_composite_dev *cdev)
{
- ghid_cleanup();
+ struct hidg_func_node *n;
+
+ list_for_each_entry(n, &hidg_func_list, node) {
+ usb_put_function(n->f);
+ usb_put_function_instance(n->fi);
+ }
return 0;
}
@@ -260,7 +293,7 @@ module_init(hidg_init);
static void __exit hidg_cleanup(void)
{
- platform_driver_unregister(&hidg_plat_driver);
usb_composite_unregister(&hidg_driver);
+ platform_driver_unregister(&hidg_plat_driver);
}
module_exit(hidg_cleanup);
diff --git a/drivers/usb/gadget/legacy/printer.c b/drivers/usb/gadget/legacy/printer.c
index 6474081dcbaf..90545980542f 100644
--- a/drivers/usb/gadget/legacy/printer.c
+++ b/drivers/usb/gadget/legacy/printer.c
@@ -208,6 +208,43 @@ static struct usb_descriptor_header *hs_printer_function[] = {
NULL
};
+/*
+ * Added endpoint descriptors for 3.0 devices
+ */
+
+static struct usb_endpoint_descriptor ss_ep_in_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor ss_ep_in_comp_desc = {
+ .bLength = sizeof(ss_ep_in_comp_desc),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+};
+
+static struct usb_endpoint_descriptor ss_ep_out_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor ss_ep_out_comp_desc = {
+ .bLength = sizeof(ss_ep_out_comp_desc),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+};
+
+static struct usb_descriptor_header *ss_printer_function[] = {
+ (struct usb_descriptor_header *) &intf_desc,
+ (struct usb_descriptor_header *) &ss_ep_in_desc,
+ (struct usb_descriptor_header *) &ss_ep_in_comp_desc,
+ (struct usb_descriptor_header *) &ss_ep_out_desc,
+ (struct usb_descriptor_header *) &ss_ep_out_comp_desc,
+ NULL
+};
+
static struct usb_otg_descriptor otg_descriptor = {
.bLength = sizeof otg_descriptor,
.bDescriptorType = USB_DT_OTG,
@@ -220,7 +257,20 @@ static const struct usb_descriptor_header *otg_desc[] = {
};
/* maxpacket and other transfer characteristics vary by speed. */
-#define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs))
+static inline struct usb_endpoint_descriptor *ep_desc(struct usb_gadget *gadget,
+ struct usb_endpoint_descriptor *fs,
+ struct usb_endpoint_descriptor *hs,
+ struct usb_endpoint_descriptor *ss)
+{
+ switch (gadget->speed) {
+ case USB_SPEED_SUPER:
+ return ss;
+ case USB_SPEED_HIGH:
+ return hs;
+ default:
+ return fs;
+ }
+}
/*-------------------------------------------------------------------------*/
@@ -793,11 +843,12 @@ set_printer_interface(struct printer_dev *dev)
{
int result = 0;
- dev->in_ep->desc = ep_desc(dev->gadget, &hs_ep_in_desc, &fs_ep_in_desc);
+ dev->in_ep->desc = ep_desc(dev->gadget, &fs_ep_in_desc, &hs_ep_in_desc,
+ &ss_ep_in_desc);
dev->in_ep->driver_data = dev;
- dev->out_ep->desc = ep_desc(dev->gadget, &hs_ep_out_desc,
- &fs_ep_out_desc);
+ dev->out_ep->desc = ep_desc(dev->gadget, &fs_ep_out_desc,
+ &hs_ep_out_desc, &ss_ep_out_desc);
dev->out_ep->driver_data = dev;
result = usb_ep_enable(dev->in_ep);
@@ -1016,9 +1067,11 @@ autoconf_fail:
/* assumes that all endpoints are dual-speed */
hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress;
hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress;
+ ss_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress;
+ ss_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress;
ret = usb_assign_descriptors(f, fs_printer_function,
- hs_printer_function, NULL);
+ hs_printer_function, ss_printer_function);
if (ret)
return ret;
@@ -1253,7 +1306,7 @@ static __refdata struct usb_composite_driver printer_driver = {
.name = shortname,
.dev = &device_desc,
.strings = dev_strings,
- .max_speed = USB_SPEED_HIGH,
+ .max_speed = USB_SPEED_SUPER,
.bind = printer_bind,
.unbind = printer_unbind,
};
diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
index 217365d35a25..b8e213eb36cc 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -241,6 +241,8 @@ config USB_M66592
dynamically linked module called "m66592_udc" and force all
gadget drivers to also be dynamically linked.
+source "drivers/usb/gadget/udc/bdc/Kconfig"
+
#
# Controllers available only in discrete form (and all PCI controllers)
#
diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile
index a7f4491593f1..fba2049bf985 100644
--- a/drivers/usb/gadget/udc/Makefile
+++ b/drivers/usb/gadget/udc/Makefile
@@ -30,3 +30,4 @@ obj-$(CONFIG_USB_FOTG210_UDC) += fotg210-udc.o
obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o
obj-$(CONFIG_USB_GR_UDC) += gr_udc.o
obj-$(CONFIG_USB_GADGET_XILINX) += udc-xilinx.o
+obj-$(CONFIG_USB_BDC_UDC) += bdc/
diff --git a/drivers/usb/gadget/udc/amd5536udc.c b/drivers/usb/gadget/udc/amd5536udc.c
index 3b9d13848a4f..de7e5e2ccf1c 100644
--- a/drivers/usb/gadget/udc/amd5536udc.c
+++ b/drivers/usb/gadget/udc/amd5536udc.c
@@ -1401,9 +1401,8 @@ static int udc_wakeup(struct usb_gadget *gadget)
static int amd5536_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int amd5536_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
-/* gadget operations */
+static int amd5536_udc_stop(struct usb_gadget *g);
+
static const struct usb_gadget_ops udc_ops = {
.wakeup = udc_wakeup,
.get_frame = udc_get_frame,
@@ -1962,8 +1961,7 @@ __acquires(dev->lock)
}
/* Called by gadget driver to unregister itself */
-static int amd5536_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int amd5536_udc_stop(struct usb_gadget *g)
{
struct udc *dev = to_amd5536_udc(g);
unsigned long flags;
@@ -1971,7 +1969,7 @@ static int amd5536_udc_stop(struct usb_gadget *g,
spin_lock_irqsave(&dev->lock, flags);
udc_mask_unused_interrupts(dev);
- shutdown(dev, driver);
+ shutdown(dev, NULL);
spin_unlock_irqrestore(&dev->lock, flags);
dev->driver = NULL;
@@ -2873,7 +2871,7 @@ __acquires(dev->lock)
dev->driver->resume(&dev->gadget);
dev->sys_suspended = 0;
}
- dev->driver->disconnect(&dev->gadget);
+ usb_gadget_udc_reset(&dev->gadget, dev->driver);
spin_lock(&dev->lock);
/* disable ep0 to empty req queue */
diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c
index 9968f5331fe4..eb2999c5d03c 100644
--- a/drivers/usb/gadget/udc/at91_udc.c
+++ b/drivers/usb/gadget/udc/at91_udc.c
@@ -840,6 +840,31 @@ static void udc_reinit(struct at91_udc *udc)
}
}
+static void reset_gadget(struct at91_udc *udc)
+{
+ struct usb_gadget_driver *driver = udc->driver;
+ int i;
+
+ if (udc->gadget.speed == USB_SPEED_UNKNOWN)
+ driver = NULL;
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ udc->suspended = 0;
+
+ for (i = 0; i < NUM_ENDPOINTS; i++) {
+ struct at91_ep *ep = &udc->ep[i];
+
+ ep->stopped = 1;
+ nuke(ep, -ESHUTDOWN);
+ }
+ if (driver) {
+ spin_unlock(&udc->lock);
+ usb_gadget_udc_reset(&udc->gadget, driver);
+ spin_lock(&udc->lock);
+ }
+
+ udc_reinit(udc);
+}
+
static void stop_activity(struct at91_udc *udc)
{
struct usb_gadget_driver *driver = udc->driver;
@@ -870,12 +895,10 @@ static void clk_on(struct at91_udc *udc)
return;
udc->clocked = 1;
- if (IS_ENABLED(CONFIG_COMMON_CLK)) {
- clk_set_rate(udc->uclk, 48000000);
- clk_prepare_enable(udc->uclk);
- }
- clk_prepare_enable(udc->iclk);
- clk_prepare_enable(udc->fclk);
+ if (IS_ENABLED(CONFIG_COMMON_CLK))
+ clk_enable(udc->uclk);
+ clk_enable(udc->iclk);
+ clk_enable(udc->fclk);
}
static void clk_off(struct at91_udc *udc)
@@ -884,10 +907,10 @@ static void clk_off(struct at91_udc *udc)
return;
udc->clocked = 0;
udc->gadget.speed = USB_SPEED_UNKNOWN;
- clk_disable_unprepare(udc->fclk);
- clk_disable_unprepare(udc->iclk);
+ clk_disable(udc->fclk);
+ clk_disable(udc->iclk);
if (IS_ENABLED(CONFIG_COMMON_CLK))
- clk_disable_unprepare(udc->uclk);
+ clk_disable(udc->uclk);
}
/*
@@ -984,8 +1007,8 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on)
static int at91_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
-static int at91_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver);
+static int at91_stop(struct usb_gadget *gadget);
+
static const struct usb_gadget_ops at91_udc_ops = {
.get_frame = at91_get_frame,
.wakeup = at91_wakeup,
@@ -1426,7 +1449,7 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_ENDBUSRES);
VDBG("end bus reset\n");
udc->addr = 0;
- stop_activity(udc);
+ reset_gadget(udc);
/* enable ep0 */
at91_udp_write(udc, AT91_UDP_CSR(0),
@@ -1512,20 +1535,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
/*-------------------------------------------------------------------------*/
-static void nop_release(struct device *dev)
-{
- /* nothing to free */
-}
-
static struct at91_udc controller = {
.gadget = {
.ops = &at91_udc_ops,
.ep0 = &controller.ep[0].ep,
.name = driver_name,
- .dev = {
- .init_name = "gadget",
- .release = nop_release,
- }
},
.ep[0] = {
.ep = {
@@ -1641,12 +1655,10 @@ static int at91_start(struct usb_gadget *gadget,
udc->enabled = 1;
udc->selfpowered = 1;
- DBG("bound to %s\n", driver->driver.name);
return 0;
}
-static int at91_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int at91_stop(struct usb_gadget *gadget)
{
struct at91_udc *udc;
unsigned long flags;
@@ -1659,7 +1671,6 @@ static int at91_stop(struct usb_gadget *gadget,
udc->driver = NULL;
- DBG("unbound from %s\n", driver->driver.name);
return 0;
}
@@ -1780,14 +1791,24 @@ static int at91udc_probe(struct platform_device *pdev)
}
/* don't do anything until we have both gadget driver and VBUS */
+ if (IS_ENABLED(CONFIG_COMMON_CLK)) {
+ clk_set_rate(udc->uclk, 48000000);
+ retval = clk_prepare(udc->uclk);
+ if (retval)
+ goto fail1;
+ }
+ retval = clk_prepare(udc->fclk);
+ if (retval)
+ goto fail1a;
+
retval = clk_prepare_enable(udc->iclk);
if (retval)
- goto fail1;
+ goto fail1b;
at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS);
at91_udp_write(udc, AT91_UDP_IDR, 0xffffffff);
/* Clear all pending interrupts - UDP may be used by bootloader. */
at91_udp_write(udc, AT91_UDP_ICR, 0xffffffff);
- clk_disable_unprepare(udc->iclk);
+ clk_disable(udc->iclk);
/* request UDC and maybe VBUS irqs */
udc->udp_irq = platform_get_irq(pdev, 0);
@@ -1795,7 +1816,7 @@ static int at91udc_probe(struct platform_device *pdev)
0, driver_name, udc);
if (retval < 0) {
DBG("request irq %d failed\n", udc->udp_irq);
- goto fail1;
+ goto fail1c;
}
if (gpio_is_valid(udc->board.vbus_pin)) {
retval = gpio_request(udc->board.vbus_pin, "udc_vbus");
@@ -1848,6 +1869,13 @@ fail3:
gpio_free(udc->board.vbus_pin);
fail2:
free_irq(udc->udp_irq, udc);
+fail1c:
+ clk_unprepare(udc->iclk);
+fail1b:
+ clk_unprepare(udc->fclk);
+fail1a:
+ if (IS_ENABLED(CONFIG_COMMON_CLK))
+ clk_unprepare(udc->uclk);
fail1:
if (IS_ENABLED(CONFIG_COMMON_CLK) && !IS_ERR(udc->uclk))
clk_put(udc->uclk);
@@ -1896,6 +1924,11 @@ static int __exit at91udc_remove(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, resource_size(res));
+ if (IS_ENABLED(CONFIG_COMMON_CLK))
+ clk_unprepare(udc->uclk);
+ clk_unprepare(udc->fclk);
+ clk_unprepare(udc->iclk);
+
clk_put(udc->iclk);
clk_put(udc->fclk);
if (IS_ENABLED(CONFIG_COMMON_CLK))
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index 1529926e20a0..b31747979c4a 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -987,8 +987,8 @@ usba_udc_set_selfpowered(struct usb_gadget *gadget, int is_selfpowered)
static int atmel_usba_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
-static int atmel_usba_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver);
+static int atmel_usba_stop(struct usb_gadget *gadget);
+
static const struct usb_gadget_ops usba_udc_ops = {
.get_frame = usba_udc_get_frame,
.wakeup = usba_udc_wakeup,
@@ -1007,19 +1007,10 @@ static struct usb_endpoint_descriptor usba_ep0_desc = {
.bInterval = 1,
};
-static void nop_release(struct device *dev)
-{
-
-}
-
static struct usb_gadget usba_gadget_template = {
.ops = &usba_udc_ops,
.max_speed = USB_SPEED_HIGH,
.name = "atmel_usba_udc",
- .dev = {
- .init_name = "gadget",
- .release = nop_release,
- },
};
/*
@@ -1685,11 +1676,10 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
usba_writel(udc, INT_CLR, USBA_END_OF_RESET);
reset_all_endpoints(udc);
- if (udc->gadget.speed != USB_SPEED_UNKNOWN
- && udc->driver && udc->driver->disconnect) {
+ if (udc->gadget.speed != USB_SPEED_UNKNOWN && udc->driver) {
udc->gadget.speed = USB_SPEED_UNKNOWN;
spin_unlock(&udc->lock);
- udc->driver->disconnect(&udc->gadget);
+ usb_gadget_udc_reset(&udc->gadget, udc->driver);
spin_lock(&udc->lock);
}
@@ -1791,8 +1781,6 @@ static int atmel_usba_start(struct usb_gadget *gadget,
return ret;
}
- DBG(DBG_GADGET, "registered driver `%s'\n", driver->driver.name);
-
udc->vbus_prev = 0;
if (gpio_is_valid(udc->vbus_pin))
enable_irq(gpio_to_irq(udc->vbus_pin));
@@ -1809,8 +1797,7 @@ static int atmel_usba_start(struct usb_gadget *gadget,
return 0;
}
-static int atmel_usba_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int atmel_usba_stop(struct usb_gadget *gadget)
{
struct usba_udc *udc = container_of(gadget, struct usba_udc, gadget);
unsigned long flags;
@@ -1830,8 +1817,6 @@ static int atmel_usba_stop(struct usb_gadget *gadget,
clk_disable_unprepare(udc->hclk);
clk_disable_unprepare(udc->pclk);
- DBG(DBG_GADGET, "unregistered driver `%s'\n", udc->driver->driver.name);
-
udc->driver = NULL;
return 0;
diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c
index 2235b8808700..c790918b337b 100644
--- a/drivers/usb/gadget/udc/bcm63xx_udc.c
+++ b/drivers/usb/gadget/udc/bcm63xx_udc.c
@@ -1836,8 +1836,7 @@ static int bcm63xx_udc_start(struct usb_gadget *gadget,
* @gadget: USB slave device.
* @driver: Driver for USB slave devices.
*/
-static int bcm63xx_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int bcm63xx_udc_stop(struct usb_gadget *gadget)
{
struct bcm63xx_udc *udc = gadget_to_udc(gadget);
unsigned long flags;
@@ -1963,7 +1962,7 @@ static irqreturn_t bcm63xx_udc_ctrl_isr(int irq, void *dev_id)
{
struct bcm63xx_udc *udc = dev_id;
u32 stat;
- bool disconnected = false;
+ bool disconnected = false, bus_reset = false;
stat = usbd_readl(udc, USBD_EVENT_IRQ_STATUS_REG) &
usbd_readl(udc, USBD_EVENT_IRQ_MASK_REG);
@@ -1991,7 +1990,7 @@ static irqreturn_t bcm63xx_udc_ctrl_isr(int irq, void *dev_id)
udc->ep0_req_reset = 1;
schedule_work(&udc->ep0_wq);
- disconnected = true;
+ bus_reset = true;
}
if (stat & BIT(USBD_EVENT_IRQ_SETUP)) {
if (bcm63xx_update_link_speed(udc)) {
@@ -2014,6 +2013,8 @@ static irqreturn_t bcm63xx_udc_ctrl_isr(int irq, void *dev_id)
if (disconnected && udc->driver)
udc->driver->disconnect(&udc->gadget);
+ else if (bus_reset && udc->driver)
+ usb_gadget_udc_reset(&udc->gadget, udc->driver);
return IRQ_HANDLED;
}
@@ -2324,10 +2325,8 @@ static int bcm63xx_udc_probe(struct platform_device *pdev)
int rc = -ENOMEM, i, irq;
udc = devm_kzalloc(dev, sizeof(*udc), GFP_KERNEL);
- if (!udc) {
- dev_err(dev, "cannot allocate memory\n");
+ if (!udc)
return -ENOMEM;
- }
platform_set_drvdata(pdev, udc);
udc->dev = dev;
diff --git a/drivers/usb/gadget/udc/bdc/Kconfig b/drivers/usb/gadget/udc/bdc/Kconfig
new file mode 100644
index 000000000000..0d7b8c9f72fd
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/Kconfig
@@ -0,0 +1,21 @@
+config USB_BDC_UDC
+ tristate "Broadcom USB3.0 device controller IP driver(BDC)"
+ depends on USB_GADGET && HAS_DMA
+
+ help
+ BDC is Broadcom's USB3.0 device controller IP. If your SOC has a BDC IP
+ then select this driver.
+
+ Say "y" here to link the driver statically, or "m" to build a dynamically
+ linked module called "bdc".
+
+if USB_BDC_UDC
+
+comment "Platform Support"
+config USB_BDC_PCI
+ tristate "BDC support for PCIe based platforms"
+ depends on PCI
+ default USB_BDC_UDC
+ help
+ Enable support for platforms which have BDC connected through PCIe, such as Lego3 FPGA platform.
+endif
diff --git a/drivers/usb/gadget/udc/bdc/Makefile b/drivers/usb/gadget/udc/bdc/Makefile
new file mode 100644
index 000000000000..5cf6a3bcdf0f
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/Makefile
@@ -0,0 +1,8 @@
+obj-$(CONFIG_USB_BDC_UDC) += bdc.o
+bdc-y := bdc_core.o bdc_cmd.o bdc_ep.o bdc_udc.o
+
+ifneq ($(CONFIG_USB_GADGET_VERBOSE),)
+ bdc-y += bdc_dbg.o
+endif
+
+obj-$(CONFIG_USB_BDC_PCI) += bdc_pci.o
diff --git a/drivers/usb/gadget/udc/bdc/bdc.h b/drivers/usb/gadget/udc/bdc/bdc.h
new file mode 100644
index 000000000000..dc18a20bf040
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc.h
@@ -0,0 +1,490 @@
+/*
+ * bdc.h - header for the BRCM BDC USB3.0 device controller
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#ifndef __LINUX_BDC_H__
+#define __LINUX_BDC_H__
+
+#include <linux/kernel.h>
+#include <linux/usb.h>
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/dma-mapping.h>
+#include <linux/mm.h>
+#include <linux/debugfs.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <asm/unaligned.h>
+
+#define BRCM_BDC_NAME "bdc_usb3"
+#define BRCM_BDC_DESC "BDC device controller driver"
+
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+
+/* BDC command operation timeout in usec*/
+#define BDC_CMD_TIMEOUT 1000
+/* BDC controller operation timeout in usec*/
+#define BDC_COP_TIMEOUT 500
+
+/*
+ * Maximum size of ep0 response buffer for ch9 requests,
+ * the set_sel request uses 6 so far, the max.
+*/
+#define EP0_RESPONSE_BUFF 6
+/* Start with SS as default */
+#define EP0_MAX_PKT_SIZE 512
+
+/* 64 entries in a SRR */
+#define NUM_SR_ENTRIES 64
+
+/* Num of bds per table */
+#define NUM_BDS_PER_TABLE 32
+
+/* Num of tables in bd list for control,bulk and Int ep */
+#define NUM_TABLES 2
+
+/* Num of tables in bd list for Isoch ep */
+#define NUM_TABLES_ISOCH 6
+
+/* U1 Timeout default: 248usec */
+#define U1_TIMEOUT 0xf8
+
+/* Interrupt coalescence in usec */
+#define INT_CLS 500
+
+/* Register offsets */
+/* Configuration and Capability registers */
+#define BDC_BDCCFG0 0x00
+#define BDC_BDCCFG1 0x04
+#define BDC_BDCCAP0 0x08
+#define BDC_BDCCAP1 0x0c
+#define BDC_CMDPAR0 0x10
+#define BDC_CMDPAR1 0x14
+#define BDC_CMDPAR2 0x18
+#define BDC_CMDSC 0x1c
+#define BDC_USPC 0x20
+#define BDC_USPPMS 0x28
+#define BDC_USPPM2 0x2c
+#define BDC_SPBBAL 0x38
+#define BDC_SPBBAH 0x3c
+#define BDC_BDCSC 0x40
+#define BDC_XSFNTF 0x4c
+
+#define BDC_DVCSA 0x50
+#define BDC_DVCSB 0x54
+#define BDC_EPSTS0(n) (0x60 + (n * 0x10))
+#define BDC_EPSTS1(n) (0x64 + (n * 0x10))
+#define BDC_EPSTS2(n) (0x68 + (n * 0x10))
+#define BDC_EPSTS3(n) (0x6c + (n * 0x10))
+#define BDC_EPSTS4(n) (0x70 + (n * 0x10))
+#define BDC_EPSTS5(n) (0x74 + (n * 0x10))
+#define BDC_EPSTS6(n) (0x78 + (n * 0x10))
+#define BDC_EPSTS7(n) (0x7c + (n * 0x10))
+#define BDC_SRRBAL(n) (0x200 + (n * 0x10))
+#define BDC_SRRBAH(n) (0x204 + (n * 0x10))
+#define BDC_SRRINT(n) (0x208 + (n * 0x10))
+#define BDC_INTCTLS(n) (0x20c + (n * 0x10))
+
+/* Extended capability regs */
+#define BDC_FSCNOC 0xcd4
+#define BDC_FSCNIC 0xce4
+#define NUM_NCS(p) (p >> 28)
+
+/* Register bit fields and Masks */
+/* BDC Configuration 0 */
+#define BDC_PGS(p) (((p) & (0x7 << 8)) >> 8)
+#define BDC_SPB(p) (p & 0x7)
+
+/* BDC Capability1 */
+#define BDC_P64 (1 << 0)
+
+/* BDC Command register */
+#define BDC_CMD_FH 0xe
+#define BDC_CMD_DNC 0x6
+#define BDC_CMD_EPO 0x4
+#define BDC_CMD_BLA 0x3
+#define BDC_CMD_EPC 0x2
+#define BDC_CMD_DVC 0x1
+#define BDC_CMD_CWS (0x1 << 5)
+#define BDC_CMD_CST(p) (((p) & (0xf << 6))>>6)
+#define BDC_CMD_EPN(p) ((p & 0x1f) << 10)
+#define BDC_SUB_CMD_ADD (0x1 << 17)
+#define BDC_SUB_CMD_FWK (0x4 << 17)
+/* Reset sequence number */
+#define BDC_CMD_EPO_RST_SN (0x1 << 16)
+#define BDC_CMD_EP0_XSD (0x1 << 16)
+#define BDC_SUB_CMD_ADD_EP (0x1 << 17)
+#define BDC_SUB_CMD_DRP_EP (0x2 << 17)
+#define BDC_SUB_CMD_EP_STP (0x2 << 17)
+#define BDC_SUB_CMD_EP_STL (0x4 << 17)
+#define BDC_SUB_CMD_EP_RST (0x1 << 17)
+#define BDC_CMD_SRD (1 << 27)
+
+/* CMD completion status */
+#define BDC_CMDS_SUCC 0x1
+#define BDC_CMDS_PARA 0x3
+#define BDC_CMDS_STAT 0x4
+#define BDC_CMDS_FAIL 0x5
+#define BDC_CMDS_INTL 0x6
+#define BDC_CMDS_BUSY 0xf
+
+/* CMDSC Param 2 shifts */
+#define EPT_SHIFT 22
+#define MP_SHIFT 10
+#define MB_SHIFT 6
+#define EPM_SHIFT 4
+
+/* BDC USPSC */
+#define BDC_VBC (1 << 31)
+#define BDC_PRC (1 << 30)
+#define BDC_PCE (1 << 29)
+#define BDC_CFC (1 << 28)
+#define BDC_PCC (1 << 27)
+#define BDC_PSC (1 << 26)
+#define BDC_VBS (1 << 25)
+#define BDC_PRS (1 << 24)
+#define BDC_PCS (1 << 23)
+#define BDC_PSP(p) (((p) & (0x7 << 20))>>20)
+#define BDC_SCN (1 << 8)
+#define BDC_SDC (1 << 7)
+#define BDC_SWS (1 << 4)
+
+#define BDC_USPSC_RW (BDC_SCN|BDC_SDC|BDC_SWS|0xf)
+#define BDC_PSP(p) (((p) & (0x7 << 20))>>20)
+
+#define BDC_SPEED_FS 0x1
+#define BDC_SPEED_LS 0x2
+#define BDC_SPEED_HS 0x3
+#define BDC_SPEED_SS 0x4
+
+#define BDC_PST(p) (p & 0xf)
+#define BDC_PST_MASK 0xf
+
+/* USPPMS */
+#define BDC_U2E (0x1 << 31)
+#define BDC_U1E (0x1 << 30)
+#define BDC_U2A (0x1 << 29)
+#define BDC_PORT_W1S (0x1 << 17)
+#define BDC_U1T(p) ((p) & 0xff)
+#define BDC_U2T(p) (((p) & 0xff) << 8)
+#define BDC_U1T_MASK 0xff
+
+/* USBPM2 */
+/* Hardware LPM Enable */
+#define BDC_HLE (1 << 16)
+
+/* BDC Status and Control */
+#define BDC_COP_RST (1 << 29)
+#define BDC_COP_RUN (2 << 29)
+#define BDC_COP_STP (4 << 29)
+
+#define BDC_COP_MASK (BDC_COP_RST|BDC_COP_RUN|BDC_COP_STP)
+
+#define BDC_COS (1 << 28)
+#define BDC_CSTS(p) (((p) & (0x7 << 20)) >> 20)
+#define BDC_MASK_MCW (1 << 7)
+#define BDC_GIE (1 << 1)
+#define BDC_GIP (1 << 0)
+
+#define BDC_HLT 1
+#define BDC_NOR 2
+#define BDC_OIP 7
+
+/* Buffer descriptor and Status report bit fields and masks */
+#define BD_TYPE_BITMASK (0xf)
+#define BD_CHAIN 0xf
+
+#define BD_TFS_SHIFT 4
+#define BD_SOT (1 << 26)
+#define BD_EOT (1 << 27)
+#define BD_ISP (1 << 29)
+#define BD_IOC (1 << 30)
+#define BD_SBF (1 << 31)
+
+#define BD_INTR_TARGET(p) (((p) & 0x1f) << 27)
+
+#define BDC_SRR_RWS (1 << 4)
+#define BDC_SRR_RST (1 << 3)
+#define BDC_SRR_ISR (1 << 2)
+#define BDC_SRR_IE (1 << 1)
+#define BDC_SRR_IP (1 << 0)
+#define BDC_SRR_EPI(p) (((p) & (0xff << 24)) >> 24)
+#define BDC_SRR_DPI(p) (((p) & (0xff << 16)) >> 16)
+#define BDC_SRR_DPI_MASK 0x00ff0000
+
+#define MARK_CHAIN_BD (BD_CHAIN|BD_EOT|BD_SOT)
+
+/* Control transfer BD specific fields */
+#define BD_DIR_IN (1 << 25)
+
+#define BDC_PTC_MASK 0xf0000000
+
+/* status report defines */
+#define SR_XSF 0
+#define SR_USPC 4
+#define SR_BD_LEN(p) (p & 0xffffff)
+
+#define XSF_SUCC 0x1
+#define XSF_SHORT 0x3
+#define XSF_BABB 0x4
+#define XSF_SETUP_RECV 0x6
+#define XSF_DATA_START 0x7
+#define XSF_STATUS_START 0x8
+
+#define XSF_STS(p) (((p) >> 28) & 0xf)
+
+/* Transfer BD fields */
+#define BD_LEN(p) ((p) & 0x1ffff)
+#define BD_LTF (1 << 25)
+#define BD_TYPE_DS 0x1
+#define BD_TYPE_SS 0x2
+
+#define BDC_EP_ENABLED (1 << 0)
+#define BDC_EP_STALL (1 << 1)
+#define BDC_EP_STOP (1 << 2)
+
+/* One BD can transfer max 65536 bytes */
+#define BD_MAX_BUFF_SIZE (1 << 16)
+/* Maximum bytes in one XFR, Refer to BDC spec */
+#define MAX_XFR_LEN 16777215
+
+/* defines for Force Header command */
+#define DEV_NOTF_TYPE 6
+#define FWK_SUBTYPE 1
+#define TRA_PACKET 4
+
+#define to_bdc_ep(e) container_of(e, struct bdc_ep, usb_ep)
+#define to_bdc_req(r) container_of(r, struct bdc_req, usb_req)
+#define gadget_to_bdc(g) container_of(g, struct bdc, gadget)
+
+/* FUNCTION WAKE DEV NOTIFICATION interval, USB3 spec table 8.13 */
+#define BDC_TNOTIFY 2500 /*in ms*/
+/* Devstatus bitfields */
+#define REMOTE_WAKEUP_ISSUED (1 << 16)
+#define DEVICE_SUSPENDED (1 << 17)
+#define FUNC_WAKE_ISSUED (1 << 18)
+#define REMOTE_WAKE_ENABLE (1 << USB_DEVICE_REMOTE_WAKEUP)
+
+/* On disconnect, preserve these bits and clear rest */
+#define DEVSTATUS_CLEAR (1 << USB_DEVICE_SELF_POWERED)
+/* Hardware and software Data structures */
+
+/* Endpoint bd: buffer descriptor */
+struct bdc_bd {
+ __le32 offset[4];
+};
+
+/* Status report in Status report ring(srr) */
+struct bdc_sr {
+ __le32 offset[4];
+};
+
+/* bd_table: contigous bd's in a table */
+struct bd_table {
+ struct bdc_bd *start_bd;
+ /* dma address of start bd of table*/
+ dma_addr_t dma;
+};
+
+/*
+ * Each endpoint has a bdl(buffer descriptor list), bdl consists of 1 or more bd
+ * table's chained to each other through a chain bd, every table has equal
+ * number of bds. the software uses bdi(bd index) to refer to particular bd in
+ * the list.
+ */
+struct bd_list {
+ /* Array of bd table pointers*/
+ struct bd_table **bd_table_array;
+ /* How many tables chained to each other */
+ int num_tabs;
+ /* Max_bdi = num_tabs * num_bds_table - 1 */
+ int max_bdi;
+ /* current enq bdi from sw point of view */
+ int eqp_bdi;
+ /* current deq bdi from sw point of view */
+ int hwd_bdi;
+ /* numbers of bds per table */
+ int num_bds_table;
+};
+
+struct bdc_req;
+
+/* Representation of a transfer, one transfer can have multiple bd's */
+struct bd_transfer {
+ struct bdc_req *req;
+ /* start bd index */
+ int start_bdi;
+ /* this will be the next hw dqp when this transfer completes */
+ int next_hwd_bdi;
+ /* number of bds in this transfer */
+ int num_bds;
+};
+
+/*
+ * Representation of a gadget request, every gadget request is contained
+ * by 1 bd_transfer.
+ */
+struct bdc_req {
+ struct usb_request usb_req;
+ struct list_head queue;
+ struct bdc_ep *ep;
+ /* only one Transfer per request */
+ struct bd_transfer bd_xfr;
+ int epnum;
+};
+
+/* scratchpad buffer needed by bdc hardware */
+struct bdc_scratchpad {
+ dma_addr_t sp_dma;
+ void *buff;
+ u32 size;
+};
+
+/* endpoint representation */
+struct bdc_ep {
+ struct usb_ep usb_ep;
+ struct list_head queue;
+ struct bdc *bdc;
+ u8 ep_type;
+ u8 dir;
+ u8 ep_num;
+ const struct usb_ss_ep_comp_descriptor *comp_desc;
+ const struct usb_endpoint_descriptor *desc;
+ unsigned int flags;
+ char name[20];
+ /* endpoint bd list*/
+ struct bd_list bd_list;
+ /*
+ * HW generates extra event for multi bd tranfers, this flag helps in
+ * ignoring the extra event
+ */
+ bool ignore_next_sr;
+};
+
+/* bdc cmmand parameter structure */
+struct bdc_cmd_params {
+ u32 param2;
+ u32 param1;
+ u32 param0;
+};
+
+/* status report ring(srr), currently one srr is supported for entire system */
+struct srr {
+ struct bdc_sr *sr_bds;
+ u16 eqp_index;
+ u16 dqp_index;
+ dma_addr_t dma_addr;
+};
+
+/* EP0 states */
+enum bdc_ep0_state {
+ WAIT_FOR_SETUP = 0,
+ WAIT_FOR_DATA_START,
+ WAIT_FOR_DATA_XMIT,
+ WAIT_FOR_STATUS_START,
+ WAIT_FOR_STATUS_XMIT,
+ STATUS_PENDING
+};
+
+/* Link states */
+enum bdc_link_state {
+ BDC_LINK_STATE_U0 = 0x00,
+ BDC_LINK_STATE_U3 = 0x03,
+ BDC_LINK_STATE_RX_DET = 0x05,
+ BDC_LINK_STATE_RESUME = 0x0f
+};
+
+/* representation of bdc */
+struct bdc {
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *gadget_driver;
+ struct device *dev;
+ /* device lock */
+ spinlock_t lock;
+
+ /* num of endpoints for a particular instantiation of IP */
+ unsigned int num_eps;
+ /*
+ * Array of ep's, it uses the same index covention as bdc hw i.e.
+ * 1 for ep0, 2 for 1out,3 for 1in ....
+ */
+ struct bdc_ep **bdc_ep_array;
+ void __iomem *regs;
+ struct bdc_scratchpad scratchpad;
+ u32 sp_buff_size;
+ /* current driver supports 1 status ring */
+ struct srr srr;
+ /* Last received setup packet */
+ struct usb_ctrlrequest setup_pkt;
+ struct bdc_req ep0_req;
+ struct bdc_req status_req;
+ enum bdc_ep0_state ep0_state;
+ bool delayed_status;
+ bool zlp_needed;
+ bool reinit;
+ bool pullup;
+ /* Bits 0-15 are standard and 16-31 for proprietary information */
+ u32 devstatus;
+ int irq;
+ void *mem;
+ u32 dev_addr;
+ /* DMA pools */
+ struct dma_pool *bd_table_pool;
+ u8 test_mode;
+ /* array of callbacks for various status report handlers */
+ void (*sr_handler[2])(struct bdc *, struct bdc_sr *);
+ /* ep0 callback handlers */
+ void (*sr_xsf_ep0[3])(struct bdc *, struct bdc_sr *);
+ /* ep0 response buffer for ch9 requests like GET_STATUS and SET_SEL */
+ unsigned char ep0_response_buff[EP0_RESPONSE_BUFF];
+ /*
+ * Timer to check if host resumed transfer after bdc sent Func wake
+ * notification packet after a remote wakeup. if not, then resend the
+ * Func Wake packet every 2.5 secs. Refer to USB3 spec section 8.5.6.4
+ */
+ struct delayed_work func_wake_notify;
+};
+
+static inline u32 bdc_readl(void __iomem *base, u32 offset)
+{
+ return readl(base + offset);
+}
+
+static inline void bdc_writel(void __iomem *base, u32 offset, u32 value)
+{
+ writel(value, base + offset);
+}
+
+/* Buffer descriptor list operations */
+void bdc_notify_xfr(struct bdc *, u32);
+void bdc_softconn(struct bdc *);
+void bdc_softdisconn(struct bdc *);
+int bdc_run(struct bdc *);
+int bdc_stop(struct bdc *);
+int bdc_reset(struct bdc *);
+int bdc_udc_init(struct bdc *);
+void bdc_udc_exit(struct bdc *);
+int bdc_reinit(struct bdc *);
+
+/* Status report handlers */
+/* Upstream port status change sr */
+void bdc_sr_uspc(struct bdc *, struct bdc_sr *);
+/* transfer sr */
+void bdc_sr_xsf(struct bdc *, struct bdc_sr *);
+/* EP0 XSF handlers */
+void bdc_xsf_ep0_setup_recv(struct bdc *, struct bdc_sr *);
+void bdc_xsf_ep0_data_start(struct bdc *, struct bdc_sr *);
+void bdc_xsf_ep0_status_start(struct bdc *, struct bdc_sr *);
+
+#endif /* __LINUX_BDC_H__ */
diff --git a/drivers/usb/gadget/udc/bdc/bdc_cmd.c b/drivers/usb/gadget/udc/bdc/bdc_cmd.c
new file mode 100644
index 000000000000..6a4155c4bd86
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_cmd.c
@@ -0,0 +1,376 @@
+/*
+ * bdc_cmd.c - BRCM BDC USB3.0 device controller
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+
+#include "bdc.h"
+#include "bdc_cmd.h"
+#include "bdc_dbg.h"
+
+/* Issues a cmd to cmd processor and waits for cmd completion */
+static int bdc_issue_cmd(struct bdc *bdc, u32 cmd_sc, u32 param0,
+ u32 param1, u32 param2)
+{
+ u32 timeout = BDC_CMD_TIMEOUT;
+ u32 cmd_status;
+ u32 temp;
+
+ bdc_writel(bdc->regs, BDC_CMDPAR0, param0);
+ bdc_writel(bdc->regs, BDC_CMDPAR1, param1);
+ bdc_writel(bdc->regs, BDC_CMDPAR2, param2);
+
+ /* Issue the cmd */
+ /* Make sure the cmd params are written before asking HW to exec cmd */
+ wmb();
+ bdc_writel(bdc->regs, BDC_CMDSC, cmd_sc | BDC_CMD_CWS | BDC_CMD_SRD);
+ do {
+ temp = bdc_readl(bdc->regs, BDC_CMDSC);
+ dev_dbg_ratelimited(bdc->dev, "cmdsc=%x", temp);
+ cmd_status = BDC_CMD_CST(temp);
+ if (cmd_status != BDC_CMDS_BUSY) {
+ dev_dbg(bdc->dev,
+ "command completed cmd_sts:%x\n", cmd_status);
+ return cmd_status;
+ }
+ udelay(1);
+ } while (timeout--);
+
+ dev_err(bdc->dev,
+ "command operation timedout cmd_status=%d\n", cmd_status);
+
+ return cmd_status;
+}
+
+/* Submits cmd and analyze the return value of bdc_issue_cmd */
+static int bdc_submit_cmd(struct bdc *bdc, u32 cmd_sc,
+ u32 param0, u32 param1, u32 param2)
+{
+ u32 temp, cmd_status;
+ int reset_bdc = 0;
+ int ret;
+
+ temp = bdc_readl(bdc->regs, BDC_CMDSC);
+ dev_dbg(bdc->dev,
+ "%s:CMDSC:%08x cmdsc:%08x param0=%08x param1=%08x param2=%08x\n",
+ __func__, temp, cmd_sc, param0, param1, param2);
+
+ cmd_status = BDC_CMD_CST(temp);
+ if (cmd_status == BDC_CMDS_BUSY) {
+ dev_err(bdc->dev, "command processor busy: %x\n", cmd_status);
+ return -EBUSY;
+ }
+ ret = bdc_issue_cmd(bdc, cmd_sc, param0, param1, param2);
+ switch (ret) {
+ case BDC_CMDS_SUCC:
+ dev_dbg(bdc->dev, "command completed successfully\n");
+ ret = 0;
+ break;
+
+ case BDC_CMDS_PARA:
+ dev_err(bdc->dev, "command parameter error\n");
+ ret = -EINVAL;
+ break;
+
+ case BDC_CMDS_STAT:
+ dev_err(bdc->dev, "Invalid device/ep state\n");
+ ret = -EINVAL;
+ break;
+
+ case BDC_CMDS_FAIL:
+ dev_err(bdc->dev, "Command failed?\n");
+ ret = -EAGAIN;
+ break;
+
+ case BDC_CMDS_INTL:
+ dev_err(bdc->dev, "BDC Internal error\n");
+ reset_bdc = 1;
+ ret = -ECONNRESET;
+ break;
+
+ case BDC_CMDS_BUSY:
+ dev_err(bdc->dev,
+ "command timedout waited for %dusec\n",
+ BDC_CMD_TIMEOUT);
+ reset_bdc = 1;
+ ret = -ECONNRESET;
+ break;
+ default:
+ dev_dbg(bdc->dev, "Unknown command completion code:%x\n", ret);
+ }
+
+ return ret;
+}
+
+/* Deconfigure the endpoint from HW */
+int bdc_dconfig_ep(struct bdc *bdc, struct bdc_ep *ep)
+{
+ u32 cmd_sc;
+
+ cmd_sc = BDC_SUB_CMD_DRP_EP|BDC_CMD_EPN(ep->ep_num)|BDC_CMD_EPC;
+ dev_dbg(bdc->dev, "%s ep->ep_num =%d cmd_sc=%x\n", __func__,
+ ep->ep_num, cmd_sc);
+
+ return bdc_submit_cmd(bdc, cmd_sc, 0, 0, 0);
+}
+
+/* Reinitalize the bdlist after config ep command */
+static void ep_bd_list_reinit(struct bdc_ep *ep)
+{
+ struct bdc *bdc = ep->bdc;
+ struct bdc_bd *bd;
+
+ ep->bd_list.eqp_bdi = 0;
+ ep->bd_list.hwd_bdi = 0;
+ bd = ep->bd_list.bd_table_array[0]->start_bd;
+ dev_dbg(bdc->dev, "%s ep:%p bd:%p\n", __func__, ep, bd);
+ memset(bd, 0, sizeof(struct bdc_bd));
+ bd->offset[3] |= cpu_to_le32(BD_SBF);
+}
+
+/* Configure an endpoint */
+int bdc_config_ep(struct bdc *bdc, struct bdc_ep *ep)
+{
+ const struct usb_ss_ep_comp_descriptor *comp_desc;
+ const struct usb_endpoint_descriptor *desc;
+ u32 param0, param1, param2, cmd_sc;
+ u32 mps, mbs, mul, si;
+ int ret;
+
+ desc = ep->desc;
+ comp_desc = ep->comp_desc;
+ cmd_sc = mul = mbs = param2 = 0;
+ param0 = lower_32_bits(ep->bd_list.bd_table_array[0]->dma);
+ param1 = upper_32_bits(ep->bd_list.bd_table_array[0]->dma);
+ cpu_to_le32s(&param0);
+ cpu_to_le32s(&param1);
+
+ dev_dbg(bdc->dev, "%s: param0=%08x param1=%08x",
+ __func__, param0, param1);
+ si = desc->bInterval;
+ si = clamp_val(si, 1, 16) - 1;
+
+ mps = usb_endpoint_maxp(desc);
+ mps &= 0x7ff;
+ param2 |= mps << MP_SHIFT;
+ param2 |= usb_endpoint_type(desc) << EPT_SHIFT;
+
+ switch (bdc->gadget.speed) {
+ case USB_SPEED_SUPER:
+ if (usb_endpoint_xfer_int(desc) ||
+ usb_endpoint_xfer_isoc(desc)) {
+ param2 |= si;
+ if (usb_endpoint_xfer_isoc(desc) && comp_desc)
+ mul = comp_desc->bmAttributes;
+
+ }
+ param2 |= mul << EPM_SHIFT;
+ if (comp_desc)
+ mbs = comp_desc->bMaxBurst;
+ param2 |= mbs << MB_SHIFT;
+ break;
+
+ case USB_SPEED_HIGH:
+ if (usb_endpoint_xfer_isoc(desc) ||
+ usb_endpoint_xfer_int(desc)) {
+ param2 |= si;
+
+ mbs = (usb_endpoint_maxp(desc) & 0x1800) >> 11;
+ param2 |= mbs << MB_SHIFT;
+ }
+ break;
+
+ case USB_SPEED_FULL:
+ case USB_SPEED_LOW:
+ /* the hardware accepts SI in 125usec range */
+ if (usb_endpoint_xfer_isoc(desc))
+ si += 3;
+
+ /*
+ * FS Int endpoints can have si of 1-255ms but the controller
+ * accepts 2^bInterval*125usec, so convert ms to nearest power
+ * of 2
+ */
+ if (usb_endpoint_xfer_int(desc))
+ si = fls(desc->bInterval * 8) - 1;
+
+ param2 |= si;
+ break;
+ default:
+ dev_err(bdc->dev, "UNKNOWN speed ERR\n");
+ return -EINVAL;
+ }
+
+ cmd_sc |= BDC_CMD_EPC|BDC_CMD_EPN(ep->ep_num)|BDC_SUB_CMD_ADD_EP;
+
+ dev_dbg(bdc->dev, "cmd_sc=%x param2=%08x\n", cmd_sc, param2);
+ ret = bdc_submit_cmd(bdc, cmd_sc, param0, param1, param2);
+ if (ret) {
+ dev_err(bdc->dev, "command failed :%x\n", ret);
+ return ret;
+ }
+ ep_bd_list_reinit(ep);
+
+ return ret;
+}
+
+/*
+ * Change the HW deq pointer, if this command is successful, HW will start
+ * fetching the next bd from address dma_addr.
+ */
+int bdc_ep_bla(struct bdc *bdc, struct bdc_ep *ep, dma_addr_t dma_addr)
+{
+ u32 param0, param1;
+ u32 cmd_sc = 0;
+
+ dev_dbg(bdc->dev, "%s: add=%08llx\n", __func__,
+ (unsigned long long)(dma_addr));
+ param0 = lower_32_bits(dma_addr);
+ param1 = upper_32_bits(dma_addr);
+ cpu_to_le32s(&param0);
+ cpu_to_le32s(&param1);
+
+ cmd_sc |= BDC_CMD_EPN(ep->ep_num)|BDC_CMD_BLA;
+ dev_dbg(bdc->dev, "cmd_sc=%x\n", cmd_sc);
+
+ return bdc_submit_cmd(bdc, cmd_sc, param0, param1, 0);
+}
+
+/* Set the address sent bu Host in SET_ADD request */
+int bdc_address_device(struct bdc *bdc, u32 add)
+{
+ u32 cmd_sc = 0;
+ u32 param2;
+
+ dev_dbg(bdc->dev, "%s: add=%d\n", __func__, add);
+ cmd_sc |= BDC_SUB_CMD_ADD|BDC_CMD_DVC;
+ param2 = add & 0x7f;
+
+ return bdc_submit_cmd(bdc, cmd_sc, 0, 0, param2);
+}
+
+/* Send a Function Wake notification packet using FH command */
+int bdc_function_wake_fh(struct bdc *bdc, u8 intf)
+{
+ u32 param0, param1;
+ u32 cmd_sc = 0;
+
+ param0 = param1 = 0;
+ dev_dbg(bdc->dev, "%s intf=%d\n", __func__, intf);
+ cmd_sc |= BDC_CMD_FH;
+ param0 |= TRA_PACKET;
+ param0 |= (bdc->dev_addr << 25);
+ param1 |= DEV_NOTF_TYPE;
+ param1 |= (FWK_SUBTYPE<<4);
+ dev_dbg(bdc->dev, "param0=%08x param1=%08x\n", param0, param1);
+
+ return bdc_submit_cmd(bdc, cmd_sc, param0, param1, 0);
+}
+
+/* Send a Function Wake notification packet using DNC command */
+int bdc_function_wake(struct bdc *bdc, u8 intf)
+{
+ u32 cmd_sc = 0;
+ u32 param2 = 0;
+
+ dev_dbg(bdc->dev, "%s intf=%d", __func__, intf);
+ param2 |= intf;
+ cmd_sc |= BDC_SUB_CMD_FWK|BDC_CMD_DNC;
+
+ return bdc_submit_cmd(bdc, cmd_sc, 0, 0, param2);
+}
+
+/* Stall the endpoint */
+int bdc_ep_set_stall(struct bdc *bdc, int epnum)
+{
+ u32 cmd_sc = 0;
+
+ dev_dbg(bdc->dev, "%s epnum=%d\n", __func__, epnum);
+ /* issue a stall endpoint command */
+ cmd_sc |= BDC_SUB_CMD_EP_STL | BDC_CMD_EPN(epnum) | BDC_CMD_EPO;
+
+ return bdc_submit_cmd(bdc, cmd_sc, 0, 0, 0);
+}
+
+/* resets the endpoint, called when host sends CLEAR_FEATURE(HALT) */
+int bdc_ep_clear_stall(struct bdc *bdc, int epnum)
+{
+ struct bdc_ep *ep;
+ u32 cmd_sc = 0;
+ int ret;
+
+ dev_dbg(bdc->dev, "%s: epnum=%d\n", __func__, epnum);
+ ep = bdc->bdc_ep_array[epnum];
+ /*
+ * If we are not in stalled then stall Endpoint and issue clear stall,
+ * his will reset the seq number for non EP0.
+ */
+ if (epnum != 1) {
+ /* if the endpoint it not stallled */
+ if (!(ep->flags & BDC_EP_STALL)) {
+ ret = bdc_ep_set_stall(bdc, epnum);
+ if (ret)
+ return ret;
+ }
+ }
+ /* Preserve the seq number for ep0 only */
+ if (epnum != 1)
+ cmd_sc |= BDC_CMD_EPO_RST_SN;
+
+ /* issue a reset endpoint command */
+ cmd_sc |= BDC_SUB_CMD_EP_RST | BDC_CMD_EPN(epnum) | BDC_CMD_EPO;
+
+ ret = bdc_submit_cmd(bdc, cmd_sc, 0, 0, 0);
+ if (ret) {
+ dev_err(bdc->dev, "command failed:%x\n", ret);
+ return ret;
+ }
+ bdc_notify_xfr(bdc, epnum);
+
+ return ret;
+}
+
+/* Stop the endpoint, called when software wants to dequeue some request */
+int bdc_stop_ep(struct bdc *bdc, int epnum)
+{
+ struct bdc_ep *ep;
+ u32 cmd_sc = 0;
+ int ret;
+
+ ep = bdc->bdc_ep_array[epnum];
+ dev_dbg(bdc->dev, "%s: ep:%s ep->flags:%08x\n", __func__,
+ ep->name, ep->flags);
+ /* Endpoint has to be in running state to execute stop ep command */
+ if (!(ep->flags & BDC_EP_ENABLED)) {
+ dev_err(bdc->dev, "stop endpoint called for disabled ep\n");
+ return -EINVAL;
+ }
+ if ((ep->flags & BDC_EP_STALL) || (ep->flags & BDC_EP_STOP))
+ return 0;
+
+ /* issue a stop endpoint command */
+ cmd_sc |= BDC_CMD_EP0_XSD | BDC_SUB_CMD_EP_STP
+ | BDC_CMD_EPN(epnum) | BDC_CMD_EPO;
+
+ ret = bdc_submit_cmd(bdc, cmd_sc, 0, 0, 0);
+ if (ret) {
+ dev_err(bdc->dev,
+ "stop endpoint command didn't complete:%d ep:%s\n",
+ ret, ep->name);
+ return ret;
+ }
+ ep->flags |= BDC_EP_STOP;
+ bdc_dump_epsts(bdc);
+
+ return ret;
+}
diff --git a/drivers/usb/gadget/udc/bdc/bdc_cmd.h b/drivers/usb/gadget/udc/bdc/bdc_cmd.h
new file mode 100644
index 000000000000..61d0e3bf9853
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_cmd.h
@@ -0,0 +1,29 @@
+/*
+ * bdc_cmd.h - header for the BDC debug functions
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#ifndef __LINUX_BDC_CMD_H__
+#define __LINUX_BDC_CMD_H__
+
+/* Command operations */
+int bdc_address_device(struct bdc *, u32);
+int bdc_config_ep(struct bdc *, struct bdc_ep *);
+int bdc_dconfig_ep(struct bdc *, struct bdc_ep *);
+int bdc_stop_ep(struct bdc *, int);
+int bdc_ep_set_stall(struct bdc *, int);
+int bdc_ep_clear_stall(struct bdc *, int);
+int bdc_ep_set_halt(struct bdc_ep *, u32 , int);
+int bdc_ep_bla(struct bdc *, struct bdc_ep *, dma_addr_t);
+int bdc_function_wake(struct bdc*, u8);
+int bdc_function_wake_fh(struct bdc*, u8);
+
+#endif /* __LINUX_BDC_CMD_H__ */
diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
new file mode 100644
index 000000000000..c6dfef8c7bbc
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
@@ -0,0 +1,533 @@
+/*
+ * bdc_core.c - BRCM BDC USB3.0 device controller core operations
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/of.h>
+#include <linux/moduleparam.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include "bdc.h"
+#include "bdc_dbg.h"
+
+/* Poll till controller status is not OIP */
+static int poll_oip(struct bdc *bdc, int usec)
+{
+ u32 status;
+ /* Poll till STS!= OIP */
+ while (usec) {
+ status = bdc_readl(bdc->regs, BDC_BDCSC);
+ if (BDC_CSTS(status) != BDC_OIP) {
+ dev_dbg(bdc->dev,
+ "poll_oip complete status=%d",
+ BDC_CSTS(status));
+ return 0;
+ }
+ udelay(10);
+ usec -= 10;
+ }
+ dev_err(bdc->dev, "Err: operation timedout BDCSC: 0x%08x\n", status);
+
+ return -ETIMEDOUT;
+}
+
+/* Stop the BDC controller */
+int bdc_stop(struct bdc *bdc)
+{
+ int ret;
+ u32 temp;
+
+ dev_dbg(bdc->dev, "%s ()\n\n", __func__);
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ /* Check if BDC is already halted */
+ if (BDC_CSTS(temp) == BDC_HLT) {
+ dev_vdbg(bdc->dev, "BDC already halted\n");
+ return 0;
+ }
+ temp &= ~BDC_COP_MASK;
+ temp |= BDC_COS|BDC_COP_STP;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+
+ ret = poll_oip(bdc, BDC_COP_TIMEOUT);
+ if (ret)
+ dev_err(bdc->dev, "bdc stop operation failed");
+
+ return ret;
+}
+
+/* Issue a reset to BDC controller */
+int bdc_reset(struct bdc *bdc)
+{
+ u32 temp;
+ int ret;
+
+ dev_dbg(bdc->dev, "%s ()\n", __func__);
+ /* First halt the controller */
+ ret = bdc_stop(bdc);
+ if (ret)
+ return ret;
+
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ temp &= ~BDC_COP_MASK;
+ temp |= BDC_COS|BDC_COP_RST;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+ ret = poll_oip(bdc, BDC_COP_TIMEOUT);
+ if (ret)
+ dev_err(bdc->dev, "bdc reset operation failed");
+
+ return ret;
+}
+
+/* Run the BDC controller */
+int bdc_run(struct bdc *bdc)
+{
+ u32 temp;
+ int ret;
+
+ dev_dbg(bdc->dev, "%s ()\n", __func__);
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ /* if BDC is already in running state then do not do anything */
+ if (BDC_CSTS(temp) == BDC_NOR) {
+ dev_warn(bdc->dev, "bdc is already in running state\n");
+ return 0;
+ }
+ temp &= ~BDC_COP_MASK;
+ temp |= BDC_COP_RUN;
+ temp |= BDC_COS;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+ ret = poll_oip(bdc, BDC_COP_TIMEOUT);
+ if (ret) {
+ dev_err(bdc->dev, "bdc run operation failed:%d", ret);
+ return ret;
+ }
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ if (BDC_CSTS(temp) != BDC_NOR) {
+ dev_err(bdc->dev, "bdc not in normal mode after RUN op :%d\n",
+ BDC_CSTS(temp));
+ return -ESHUTDOWN;
+ }
+
+ return 0;
+}
+
+/*
+ * Present the termination to the host, typically called from upstream port
+ * event with Vbus present =1
+ */
+void bdc_softconn(struct bdc *bdc)
+{
+ u32 uspc;
+
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ uspc &= ~BDC_PST_MASK;
+ uspc |= BDC_LINK_STATE_RX_DET;
+ uspc |= BDC_SWS;
+ dev_dbg(bdc->dev, "%s () uspc=%08x\n", __func__, uspc);
+ bdc_writel(bdc->regs, BDC_USPC, uspc);
+}
+
+/* Remove the termination */
+void bdc_softdisconn(struct bdc *bdc)
+{
+ u32 uspc;
+
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ uspc |= BDC_SDC;
+ uspc &= ~BDC_SCN;
+ dev_dbg(bdc->dev, "%s () uspc=%x\n", __func__, uspc);
+ bdc_writel(bdc->regs, BDC_USPC, uspc);
+}
+
+/* Set up the scratchpad buffer array and scratchpad buffers, if needed. */
+static int scratchpad_setup(struct bdc *bdc)
+{
+ int sp_buff_size;
+ u32 low32;
+ u32 upp32;
+
+ sp_buff_size = BDC_SPB(bdc_readl(bdc->regs, BDC_BDCCFG0));
+ dev_dbg(bdc->dev, "%s() sp_buff_size=%d\n", __func__, sp_buff_size);
+ if (!sp_buff_size) {
+ dev_dbg(bdc->dev, "Scratchpad buffer not needed\n");
+ return 0;
+ }
+ /* Refer to BDC spec, Table 4 for description of SPB */
+ sp_buff_size = 1 << (sp_buff_size + 5);
+ dev_dbg(bdc->dev, "Allocating %d bytes for scratchpad\n", sp_buff_size);
+ bdc->scratchpad.buff = dma_zalloc_coherent(bdc->dev, sp_buff_size,
+ &bdc->scratchpad.sp_dma, GFP_KERNEL);
+
+ if (!bdc->scratchpad.buff)
+ goto fail;
+
+ bdc->sp_buff_size = sp_buff_size;
+ bdc->scratchpad.size = sp_buff_size;
+ low32 = lower_32_bits(bdc->scratchpad.sp_dma);
+ upp32 = upper_32_bits(bdc->scratchpad.sp_dma);
+ cpu_to_le32s(&low32);
+ cpu_to_le32s(&upp32);
+ bdc_writel(bdc->regs, BDC_SPBBAL, low32);
+ bdc_writel(bdc->regs, BDC_SPBBAH, upp32);
+ return 0;
+
+fail:
+ bdc->scratchpad.buff = NULL;
+
+ return -ENOMEM;
+}
+
+/* Allocate the status report ring */
+static int setup_srr(struct bdc *bdc, int interrupter)
+{
+ dev_dbg(bdc->dev, "%s() NUM_SR_ENTRIES:%d\n", __func__, NUM_SR_ENTRIES);
+ /* Reset the SRR */
+ bdc_writel(bdc->regs, BDC_SRRINT(0), BDC_SRR_RWS | BDC_SRR_RST);
+ bdc->srr.dqp_index = 0;
+ /* allocate the status report descriptors */
+ bdc->srr.sr_bds = dma_zalloc_coherent(
+ bdc->dev,
+ NUM_SR_ENTRIES * sizeof(struct bdc_bd),
+ &bdc->srr.dma_addr,
+ GFP_KERNEL);
+ if (!bdc->srr.sr_bds)
+ return -ENOMEM;
+
+ return 0;
+}
+
+/* Initialize the HW regs and internal data structures */
+static void bdc_mem_init(struct bdc *bdc, bool reinit)
+{
+ u8 size = 0;
+ u32 usb2_pm;
+ u32 low32;
+ u32 upp32;
+ u32 temp;
+
+ dev_dbg(bdc->dev, "%s ()\n", __func__);
+ bdc->ep0_state = WAIT_FOR_SETUP;
+ bdc->dev_addr = 0;
+ bdc->srr.eqp_index = 0;
+ bdc->srr.dqp_index = 0;
+ bdc->zlp_needed = false;
+ bdc->delayed_status = false;
+
+ bdc_writel(bdc->regs, BDC_SPBBAL, bdc->scratchpad.sp_dma);
+ /* Init the SRR */
+ temp = BDC_SRR_RWS | BDC_SRR_RST;
+ /* Reset the SRR */
+ bdc_writel(bdc->regs, BDC_SRRINT(0), temp);
+ dev_dbg(bdc->dev, "bdc->srr.sr_bds =%p\n", bdc->srr.sr_bds);
+ temp = lower_32_bits(bdc->srr.dma_addr);
+ size = fls(NUM_SR_ENTRIES) - 2;
+ temp |= size;
+ dev_dbg(bdc->dev, "SRRBAL[0]=%08x NUM_SR_ENTRIES:%d size:%d\n",
+ temp, NUM_SR_ENTRIES, size);
+
+ low32 = lower_32_bits(temp);
+ upp32 = upper_32_bits(bdc->srr.dma_addr);
+ cpu_to_le32s(&low32);
+ cpu_to_le32s(&upp32);
+
+ /* Write the dma addresses into regs*/
+ bdc_writel(bdc->regs, BDC_SRRBAL(0), low32);
+ bdc_writel(bdc->regs, BDC_SRRBAH(0), upp32);
+
+ temp = bdc_readl(bdc->regs, BDC_SRRINT(0));
+ temp |= BDC_SRR_IE;
+ temp &= ~(BDC_SRR_RST | BDC_SRR_RWS);
+ bdc_writel(bdc->regs, BDC_SRRINT(0), temp);
+
+ /* Set the Interrupt Coalescence ~500 usec */
+ temp = bdc_readl(bdc->regs, BDC_INTCTLS(0));
+ temp &= ~0xffff;
+ temp |= INT_CLS;
+ bdc_writel(bdc->regs, BDC_INTCTLS(0), temp);
+
+ usb2_pm = bdc_readl(bdc->regs, BDC_USPPM2);
+ dev_dbg(bdc->dev, "usb2_pm=%08x", usb2_pm);
+ /* Enable hardware LPM Enable */
+ usb2_pm |= BDC_HLE;
+ bdc_writel(bdc->regs, BDC_USPPM2, usb2_pm);
+
+ /* readback for debug */
+ usb2_pm = bdc_readl(bdc->regs, BDC_USPPM2);
+ dev_dbg(bdc->dev, "usb2_pm=%08x\n", usb2_pm);
+
+ /* Disable any unwanted SR's on SRR */
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ /* We don't want Microframe counter wrap SR */
+ temp |= BDC_MASK_MCW;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+
+ /*
+ * In some error cases, driver has to reset the entire BDC controller
+ * in that case reinit is passed as 1
+ */
+ if (reinit) {
+ /* Enable interrupts */
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ temp |= BDC_GIE;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+ /* Init scratchpad to 0 */
+ memset(bdc->scratchpad.buff, 0, bdc->sp_buff_size);
+ /* Initialize SRR to 0 */
+ memset(bdc->srr.sr_bds, 0,
+ NUM_SR_ENTRIES * sizeof(struct bdc_bd));
+ } else {
+ /* One time initiaization only */
+ /* Enable status report function pointers */
+ bdc->sr_handler[0] = bdc_sr_xsf;
+ bdc->sr_handler[1] = bdc_sr_uspc;
+
+ /* EP0 status report function pointers */
+ bdc->sr_xsf_ep0[0] = bdc_xsf_ep0_setup_recv;
+ bdc->sr_xsf_ep0[1] = bdc_xsf_ep0_data_start;
+ bdc->sr_xsf_ep0[2] = bdc_xsf_ep0_status_start;
+ }
+}
+
+/* Free the dynamic memory */
+static void bdc_mem_free(struct bdc *bdc)
+{
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ /* Free SRR */
+ if (bdc->srr.sr_bds)
+ dma_free_coherent(bdc->dev,
+ NUM_SR_ENTRIES * sizeof(struct bdc_bd),
+ bdc->srr.sr_bds, bdc->srr.dma_addr);
+
+ /* Free scratchpad */
+ if (bdc->scratchpad.buff)
+ dma_free_coherent(bdc->dev, bdc->sp_buff_size,
+ bdc->scratchpad.buff, bdc->scratchpad.sp_dma);
+
+ /* Destroy the dma pools */
+ if (bdc->bd_table_pool)
+ dma_pool_destroy(bdc->bd_table_pool);
+
+ /* Free the bdc_ep array */
+ kfree(bdc->bdc_ep_array);
+
+ bdc->srr.sr_bds = NULL;
+ bdc->scratchpad.buff = NULL;
+ bdc->bd_table_pool = NULL;
+ bdc->bdc_ep_array = NULL;
+}
+
+/*
+ * bdc reinit gives a controller reset and reinitialize the registers,
+ * called from disconnect/bus reset scenario's, to ensure proper HW cleanup
+ */
+int bdc_reinit(struct bdc *bdc)
+{
+ int ret;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ ret = bdc_stop(bdc);
+ if (ret)
+ goto out;
+
+ ret = bdc_reset(bdc);
+ if (ret)
+ goto out;
+
+ /* the reinit flag is 1 */
+ bdc_mem_init(bdc, true);
+ ret = bdc_run(bdc);
+out:
+ bdc->reinit = false;
+
+ return ret;
+}
+
+/* Allocate all the dyanmic memory */
+static int bdc_mem_alloc(struct bdc *bdc)
+{
+ u32 page_size;
+ unsigned int num_ieps, num_oeps;
+
+ dev_dbg(bdc->dev,
+ "%s() NUM_BDS_PER_TABLE:%d\n", __func__,
+ NUM_BDS_PER_TABLE);
+ page_size = BDC_PGS(bdc_readl(bdc->regs, BDC_BDCCFG0));
+ /* page size is 2^pgs KB */
+ page_size = 1 << page_size;
+ /* KB */
+ page_size <<= 10;
+ dev_dbg(bdc->dev, "page_size=%d\n", page_size);
+
+ /* Create a pool of bd tables */
+ bdc->bd_table_pool =
+ dma_pool_create("BDC BD tables", bdc->dev, NUM_BDS_PER_TABLE * 16,
+ 16, page_size);
+
+ if (!bdc->bd_table_pool)
+ goto fail;
+
+ if (scratchpad_setup(bdc))
+ goto fail;
+
+ /* read from regs */
+ num_ieps = NUM_NCS(bdc_readl(bdc->regs, BDC_FSCNIC));
+ num_oeps = NUM_NCS(bdc_readl(bdc->regs, BDC_FSCNOC));
+ /* +2: 1 for ep0 and the other is rsvd i.e. bdc_ep[0] is rsvd */
+ bdc->num_eps = num_ieps + num_oeps + 2;
+ dev_dbg(bdc->dev,
+ "ieps:%d eops:%d num_eps:%d\n",
+ num_ieps, num_oeps, bdc->num_eps);
+ /* allocate array of ep pointers */
+ bdc->bdc_ep_array = kcalloc(bdc->num_eps, sizeof(struct bdc_ep *),
+ GFP_KERNEL);
+ if (!bdc->bdc_ep_array)
+ goto fail;
+
+ dev_dbg(bdc->dev, "Allocating sr report0\n");
+ if (setup_srr(bdc, 0))
+ goto fail;
+
+ return 0;
+fail:
+ dev_warn(bdc->dev, "Couldn't initialize memory\n");
+ bdc_mem_free(bdc);
+
+ return -ENOMEM;
+}
+
+/* opposite to bdc_hw_init */
+static void bdc_hw_exit(struct bdc *bdc)
+{
+ dev_dbg(bdc->dev, "%s ()\n", __func__);
+ bdc_mem_free(bdc);
+}
+
+/* Initialize the bdc HW and memory */
+static int bdc_hw_init(struct bdc *bdc)
+{
+ int ret;
+
+ dev_dbg(bdc->dev, "%s ()\n", __func__);
+ ret = bdc_reset(bdc);
+ if (ret) {
+ dev_err(bdc->dev, "err resetting bdc abort bdc init%d\n", ret);
+ return ret;
+ }
+ ret = bdc_mem_alloc(bdc);
+ if (ret) {
+ dev_err(bdc->dev, "Mem alloc failed, aborting\n");
+ return -ENOMEM;
+ }
+ bdc_mem_init(bdc, 0);
+ bdc_dbg_regs(bdc);
+ dev_dbg(bdc->dev, "HW Init done\n");
+
+ return 0;
+}
+
+static int bdc_probe(struct platform_device *pdev)
+{
+ struct bdc *bdc;
+ struct resource *res;
+ int ret = -ENOMEM;
+ int irq;
+ u32 temp;
+ struct device *dev = &pdev->dev;
+
+ dev_dbg(dev, "%s()\n", __func__);
+ bdc = devm_kzalloc(dev, sizeof(*bdc), GFP_KERNEL);
+ if (!bdc)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ bdc->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(bdc->regs)) {
+ dev_err(dev, "ioremap error\n");
+ return -ENOMEM;
+ }
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "platform_get_irq failed:%d\n", irq);
+ return irq;
+ }
+ spin_lock_init(&bdc->lock);
+ platform_set_drvdata(pdev, bdc);
+ bdc->irq = irq;
+ bdc->dev = dev;
+ dev_dbg(bdc->dev, "bdc->regs: %p irq=%d\n", bdc->regs, bdc->irq);
+
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ if ((temp & BDC_P64) &&
+ !dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) {
+ dev_dbg(bdc->dev, "Using 64-bit address\n");
+ } else {
+ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+ if (ret) {
+ dev_err(bdc->dev, "No suitable DMA config available, abort\n");
+ return -ENOTSUPP;
+ }
+ dev_dbg(bdc->dev, "Using 32-bit address\n");
+ }
+ ret = bdc_hw_init(bdc);
+ if (ret) {
+ dev_err(bdc->dev, "BDC init failure:%d\n", ret);
+ return ret;
+ }
+ ret = bdc_udc_init(bdc);
+ if (ret) {
+ dev_err(bdc->dev, "BDC Gadget init failure:%d\n", ret);
+ goto cleanup;
+ }
+ return 0;
+
+cleanup:
+ bdc_hw_exit(bdc);
+
+ return ret;
+}
+
+static int bdc_remove(struct platform_device *pdev)
+{
+ struct bdc *bdc;
+
+ bdc = platform_get_drvdata(pdev);
+ dev_dbg(bdc->dev, "%s ()\n", __func__);
+ bdc_udc_exit(bdc);
+ bdc_hw_exit(bdc);
+
+ return 0;
+}
+
+static struct platform_driver bdc_driver = {
+ .driver = {
+ .name = BRCM_BDC_NAME,
+ .owner = THIS_MODULE
+ },
+ .probe = bdc_probe,
+ .remove = bdc_remove,
+};
+
+module_platform_driver(bdc_driver);
+MODULE_AUTHOR("Ashwini Pahuja <ashwini.linux@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(BRCM_BDC_DESC);
diff --git a/drivers/usb/gadget/udc/bdc/bdc_dbg.c b/drivers/usb/gadget/udc/bdc/bdc_dbg.c
new file mode 100644
index 000000000000..5945dbc47825
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_dbg.c
@@ -0,0 +1,123 @@
+/*
+ * bdc_dbg.c - BRCM BDC USB3.0 device controller debug functions
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include "bdc.h"
+#include "bdc_dbg.h"
+
+void bdc_dbg_regs(struct bdc *bdc)
+{
+ u32 temp;
+
+ dev_vdbg(bdc->dev, "bdc->regs:%p\n", bdc->regs);
+ temp = bdc_readl(bdc->regs, BDC_BDCCFG0);
+ dev_vdbg(bdc->dev, "bdccfg0:0x%08x\n", temp);
+ temp = bdc_readl(bdc->regs, BDC_BDCCFG1);
+ dev_vdbg(bdc->dev, "bdccfg1:0x%08x\n", temp);
+ temp = bdc_readl(bdc->regs, BDC_BDCCAP0);
+ dev_vdbg(bdc->dev, "bdccap0:0x%08x\n", temp);
+ temp = bdc_readl(bdc->regs, BDC_BDCCAP1);
+ dev_vdbg(bdc->dev, "bdccap1:0x%08x\n", temp);
+ temp = bdc_readl(bdc->regs, BDC_USPC);
+ dev_vdbg(bdc->dev, "uspc:0x%08x\n", temp);
+ temp = bdc_readl(bdc->regs, BDC_DVCSA);
+ dev_vdbg(bdc->dev, "dvcsa:0x%08x\n", temp);
+ temp = bdc_readl(bdc->regs, BDC_DVCSB);
+ dev_vdbg(bdc->dev, "dvcsb:0x%x08\n", temp);
+}
+
+void bdc_dump_epsts(struct bdc *bdc)
+{
+ u32 temp;
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS0(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS0:0x%08x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS1(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS1:0x%x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS2(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS2:0x%08x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS3(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS3:0x%08x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS4(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS4:0x%08x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS5(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS5:0x%08x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS6(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS6:0x%08x\n", temp);
+
+ temp = bdc_readl(bdc->regs, BDC_EPSTS7(0));
+ dev_vdbg(bdc->dev, "BDC_EPSTS7:0x%08x\n", temp);
+}
+
+void bdc_dbg_srr(struct bdc *bdc, u32 srr_num)
+{
+ struct bdc_sr *sr;
+ dma_addr_t addr;
+ int i;
+
+ sr = bdc->srr.sr_bds;
+ addr = bdc->srr.dma_addr;
+ dev_vdbg(bdc->dev, "bdc_dbg_srr sr:%p dqp_index:%d\n",
+ sr, bdc->srr.dqp_index);
+ for (i = 0; i < NUM_SR_ENTRIES; i++) {
+ sr = &bdc->srr.sr_bds[i];
+ dev_vdbg(bdc->dev, "%llx %08x %08x %08x %08x\n",
+ (unsigned long long)addr,
+ le32_to_cpu(sr->offset[0]),
+ le32_to_cpu(sr->offset[1]),
+ le32_to_cpu(sr->offset[2]),
+ le32_to_cpu(sr->offset[3]));
+ addr += sizeof(*sr);
+ }
+}
+
+void bdc_dbg_bd_list(struct bdc *bdc, struct bdc_ep *ep)
+{
+ struct bd_list *bd_list = &ep->bd_list;
+ struct bd_table *bd_table;
+ struct bdc_bd *bd;
+ int tbi, bdi, gbdi;
+ dma_addr_t dma;
+
+ gbdi = 0;
+ dev_vdbg(bdc->dev,
+ "Dump bd list for %s epnum:%d\n",
+ ep->name, ep->ep_num);
+
+ dev_vdbg(bdc->dev,
+ "tabs:%d max_bdi:%d eqp_bdi:%d hwd_bdi:%d num_bds_table:%d\n",
+ bd_list->num_tabs, bd_list->max_bdi, bd_list->eqp_bdi,
+ bd_list->hwd_bdi, bd_list->num_bds_table);
+
+ for (tbi = 0; tbi < bd_list->num_tabs; tbi++) {
+ bd_table = bd_list->bd_table_array[tbi];
+ for (bdi = 0; bdi < bd_list->num_bds_table; bdi++) {
+ bd = bd_table->start_bd + bdi;
+ dma = bd_table->dma + (sizeof(struct bdc_bd) * bdi);
+ dev_vdbg(bdc->dev,
+ "tbi:%2d bdi:%2d gbdi:%2d virt:%p phys:%llx %08x %08x %08x %08x\n",
+ tbi, bdi, gbdi++, bd, (unsigned long long)dma,
+ le32_to_cpu(bd->offset[0]),
+ le32_to_cpu(bd->offset[1]),
+ le32_to_cpu(bd->offset[2]),
+ le32_to_cpu(bd->offset[3]));
+ }
+ dev_vdbg(bdc->dev, "\n\n");
+ }
+}
diff --git a/drivers/usb/gadget/udc/bdc/bdc_dbg.h b/drivers/usb/gadget/udc/bdc/bdc_dbg.h
new file mode 100644
index 000000000000..338a6c701315
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_dbg.h
@@ -0,0 +1,37 @@
+/*
+ * bdc_dbg.h - header for the BDC debug functions
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#ifndef __LINUX_BDC_DBG_H__
+#define __LINUX_BDC_DBG_H__
+
+#include "bdc.h"
+
+#ifdef CONFIG_USB_GADGET_VERBOSE
+void bdc_dbg_bd_list(struct bdc *, struct bdc_ep*);
+void bdc_dbg_srr(struct bdc *, u32);
+void bdc_dbg_regs(struct bdc *);
+void bdc_dump_epsts(struct bdc *);
+#else
+static inline void bdc_dbg_regs(struct bdc *bdc)
+{ }
+
+static inline void bdc_dbg_srr(struct bdc *bdc, u32 srr_num)
+{ }
+
+static inline void bdc_dbg_bd_list(struct bdc *bdc, struct bdc_ep *ep)
+{ }
+
+static inline void bdc_dump_epsts(struct bdc *bdc)
+{ }
+#endif /* CONFIG_USB_GADGET_VERBOSE */
+#endif /* __LINUX_BDC_DBG_H__ */
diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c
new file mode 100644
index 000000000000..ff67ceac77c4
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c
@@ -0,0 +1,2024 @@
+/*
+ * bdc_ep.c - BRCM BDC USB3.0 device controller endpoint related functions
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * Based on drivers under drivers/usb/
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/dmapool.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/otg.h>
+#include <linux/pm.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <asm/unaligned.h>
+#include <linux/platform_device.h>
+#include <linux/usb/composite.h>
+
+#include "bdc.h"
+#include "bdc_ep.h"
+#include "bdc_cmd.h"
+#include "bdc_dbg.h"
+
+static const char * const ep0_state_string[] = {
+ "WAIT_FOR_SETUP",
+ "WAIT_FOR_DATA_START",
+ "WAIT_FOR_DATA_XMIT",
+ "WAIT_FOR_STATUS_START",
+ "WAIT_FOR_STATUS_XMIT",
+ "STATUS_PENDING"
+};
+
+/* Free the bdl during ep disable */
+static void ep_bd_list_free(struct bdc_ep *ep, u32 num_tabs)
+{
+ struct bd_list *bd_list = &ep->bd_list;
+ struct bdc *bdc = ep->bdc;
+ struct bd_table *bd_table;
+ int index;
+
+ dev_dbg(bdc->dev, "%s ep:%s num_tabs:%d\n",
+ __func__, ep->name, num_tabs);
+
+ if (!bd_list->bd_table_array) {
+ dev_dbg(bdc->dev, "%s already freed\n", ep->name);
+ return;
+ }
+ for (index = 0; index < num_tabs; index++) {
+ /*
+ * check if the bd_table struct is allocated ?
+ * if yes, then check if bd memory has been allocated, then
+ * free the dma_pool and also the bd_table struct memory
+ */
+ bd_table = bd_list->bd_table_array[index];
+ dev_dbg(bdc->dev, "bd_table:%p index:%d\n", bd_table, index);
+ if (!bd_table) {
+ dev_dbg(bdc->dev, "bd_table not allocated\n");
+ continue;
+ }
+ if (!bd_table->start_bd) {
+ dev_dbg(bdc->dev, "bd dma pool not allocted\n");
+ continue;
+ }
+
+ dev_dbg(bdc->dev,
+ "Free dma pool start_bd:%p dma:%llx\n",
+ bd_table->start_bd,
+ (unsigned long long)bd_table->dma);
+
+ dma_pool_free(bdc->bd_table_pool,
+ bd_table->start_bd,
+ bd_table->dma);
+ /* Free the bd_table structure */
+ kfree(bd_table);
+ }
+ /* Free the bd table array */
+ kfree(ep->bd_list.bd_table_array);
+}
+
+/*
+ * chain the tables, by insteting a chain bd at the end of prev_table, pointing
+ * to next_table
+ */
+static inline void chain_table(struct bd_table *prev_table,
+ struct bd_table *next_table,
+ u32 bd_p_tab)
+{
+ /* Chain the prev table to next table */
+ prev_table->start_bd[bd_p_tab-1].offset[0] =
+ cpu_to_le32(lower_32_bits(next_table->dma));
+
+ prev_table->start_bd[bd_p_tab-1].offset[1] =
+ cpu_to_le32(upper_32_bits(next_table->dma));
+
+ prev_table->start_bd[bd_p_tab-1].offset[2] =
+ 0x0;
+
+ prev_table->start_bd[bd_p_tab-1].offset[3] =
+ cpu_to_le32(MARK_CHAIN_BD);
+}
+
+/* Allocate the bdl for ep, during config ep */
+static int ep_bd_list_alloc(struct bdc_ep *ep)
+{
+ struct bd_table *prev_table = NULL;
+ int index, num_tabs, bd_p_tab;
+ struct bdc *bdc = ep->bdc;
+ struct bd_table *bd_table;
+ dma_addr_t dma;
+
+ if (usb_endpoint_xfer_isoc(ep->desc))
+ num_tabs = NUM_TABLES_ISOCH;
+ else
+ num_tabs = NUM_TABLES;
+
+ bd_p_tab = NUM_BDS_PER_TABLE;
+ /* if there is only 1 table in bd list then loop chain to self */
+ dev_dbg(bdc->dev,
+ "%s ep:%p num_tabs:%d\n",
+ __func__, ep, num_tabs);
+
+ /* Allocate memory for table array */
+ ep->bd_list.bd_table_array = kzalloc(
+ num_tabs * sizeof(struct bd_table *),
+ GFP_ATOMIC);
+ if (!ep->bd_list.bd_table_array)
+ return -ENOMEM;
+
+ /* Allocate memory for each table */
+ for (index = 0; index < num_tabs; index++) {
+ /* Allocate memory for bd_table structure */
+ bd_table = kzalloc(sizeof(struct bd_table), GFP_ATOMIC);
+ if (!bd_table)
+ goto fail;
+
+ bd_table->start_bd = dma_pool_alloc(bdc->bd_table_pool,
+ GFP_ATOMIC,
+ &dma);
+ if (!bd_table->start_bd)
+ goto fail;
+
+ bd_table->dma = dma;
+
+ dev_dbg(bdc->dev,
+ "index:%d start_bd:%p dma=%08llx prev_table:%p\n",
+ index, bd_table->start_bd,
+ (unsigned long long)bd_table->dma, prev_table);
+
+ ep->bd_list.bd_table_array[index] = bd_table;
+ memset(bd_table->start_bd, 0, bd_p_tab * sizeof(struct bdc_bd));
+ if (prev_table)
+ chain_table(prev_table, bd_table, bd_p_tab);
+
+ prev_table = bd_table;
+ }
+ chain_table(prev_table, ep->bd_list.bd_table_array[0], bd_p_tab);
+ /* Memory allocation is successful, now init the internal fields */
+ ep->bd_list.num_tabs = num_tabs;
+ ep->bd_list.max_bdi = (num_tabs * bd_p_tab) - 1;
+ ep->bd_list.num_tabs = num_tabs;
+ ep->bd_list.num_bds_table = bd_p_tab;
+ ep->bd_list.eqp_bdi = 0;
+ ep->bd_list.hwd_bdi = 0;
+
+ return 0;
+fail:
+ /* Free the bd_table_array, bd_table struct, bd's */
+ ep_bd_list_free(ep, num_tabs);
+
+ return -ENOMEM;
+}
+
+/* returns how many bd's are need for this transfer */
+static inline int bd_needed_req(struct bdc_req *req)
+{
+ int bd_needed = 0;
+ int remaining;
+
+ /* 1 bd needed for 0 byte transfer */
+ if (req->usb_req.length == 0)
+ return 1;
+
+ /* remaining bytes after tranfering all max BD size BD's */
+ remaining = req->usb_req.length % BD_MAX_BUFF_SIZE;
+ if (remaining)
+ bd_needed++;
+
+ /* How many maximum BUFF size BD's ? */
+ remaining = req->usb_req.length / BD_MAX_BUFF_SIZE;
+ bd_needed += remaining;
+
+ return bd_needed;
+}
+
+/* returns the bd index(bdi) corresponding to bd dma address */
+static int bd_add_to_bdi(struct bdc_ep *ep, dma_addr_t bd_dma_addr)
+{
+ struct bd_list *bd_list = &ep->bd_list;
+ dma_addr_t dma_first_bd, dma_last_bd;
+ struct bdc *bdc = ep->bdc;
+ struct bd_table *bd_table;
+ bool found = false;
+ int tbi, bdi;
+
+ dma_first_bd = dma_last_bd = 0;
+ dev_dbg(bdc->dev, "%s %llx\n",
+ __func__, (unsigned long long)bd_dma_addr);
+ /*
+ * Find in which table this bd_dma_addr belongs?, go through the table
+ * array and compare addresses of first and last address of bd of each
+ * table
+ */
+ for (tbi = 0; tbi < bd_list->num_tabs; tbi++) {
+ bd_table = bd_list->bd_table_array[tbi];
+ dma_first_bd = bd_table->dma;
+ dma_last_bd = bd_table->dma +
+ (sizeof(struct bdc_bd) *
+ (bd_list->num_bds_table - 1));
+ dev_dbg(bdc->dev, "dma_first_bd:%llx dma_last_bd:%llx\n",
+ (unsigned long long)dma_first_bd,
+ (unsigned long long)dma_last_bd);
+ if (bd_dma_addr >= dma_first_bd && bd_dma_addr <= dma_last_bd) {
+ found = true;
+ break;
+ }
+ }
+ if (unlikely(!found)) {
+ dev_err(bdc->dev, "%s FATAL err, bd not found\n", __func__);
+ return -EINVAL;
+ }
+ /* Now we know the table, find the bdi */
+ bdi = (bd_dma_addr - dma_first_bd) / sizeof(struct bdc_bd);
+
+ /* return the global bdi, to compare with ep eqp_bdi */
+ return (bdi + (tbi * bd_list->num_bds_table));
+}
+
+/* returns the table index(tbi) of the given bdi */
+static int bdi_to_tbi(struct bdc_ep *ep, int bdi)
+{
+ int tbi;
+
+ tbi = bdi / ep->bd_list.num_bds_table;
+ dev_vdbg(ep->bdc->dev,
+ "bdi:%d num_bds_table:%d tbi:%d\n",
+ bdi, ep->bd_list.num_bds_table, tbi);
+
+ return tbi;
+}
+
+/* Find the bdi last bd in the transfer */
+static inline int find_end_bdi(struct bdc_ep *ep, int next_hwd_bdi)
+{
+ int end_bdi;
+
+ end_bdi = next_hwd_bdi - 1;
+ if (end_bdi < 0)
+ end_bdi = ep->bd_list.max_bdi - 1;
+ else if ((end_bdi % (ep->bd_list.num_bds_table-1)) == 0)
+ end_bdi--;
+
+ return end_bdi;
+}
+
+/*
+ * How many transfer bd's are available on this ep bdl, chain bds are not
+ * counted in available bds
+ */
+static int bd_available_ep(struct bdc_ep *ep)
+{
+ struct bd_list *bd_list = &ep->bd_list;
+ int available1, available2;
+ struct bdc *bdc = ep->bdc;
+ int chain_bd1, chain_bd2;
+ int available_bd = 0;
+
+ available1 = available2 = chain_bd1 = chain_bd2 = 0;
+ /* if empty then we have all bd's available - number of chain bd's */
+ if (bd_list->eqp_bdi == bd_list->hwd_bdi)
+ return bd_list->max_bdi - bd_list->num_tabs;
+
+ /*
+ * Depending upon where eqp and dqp pointers are, caculate number
+ * of avaialble bd's
+ */
+ if (bd_list->hwd_bdi < bd_list->eqp_bdi) {
+ /* available bd's are from eqp..max_bds + 0..dqp - chain_bds */
+ available1 = bd_list->max_bdi - bd_list->eqp_bdi;
+ available2 = bd_list->hwd_bdi;
+ chain_bd1 = available1 / bd_list->num_bds_table;
+ chain_bd2 = available2 / bd_list->num_bds_table;
+ dev_vdbg(bdc->dev, "chain_bd1:%d chain_bd2:%d\n",
+ chain_bd1, chain_bd2);
+ available_bd = available1 + available2 - chain_bd1 - chain_bd2;
+ } else {
+ /* available bd's are from eqp..dqp - number of chain bd's */
+ available1 = bd_list->hwd_bdi - bd_list->eqp_bdi;
+ /* if gap between eqp and dqp is less than NUM_BDS_PER_TABLE */
+ if ((bd_list->hwd_bdi - bd_list->eqp_bdi)
+ <= bd_list->num_bds_table) {
+ /* If there any chain bd in between */
+ if (!(bdi_to_tbi(ep, bd_list->hwd_bdi)
+ == bdi_to_tbi(ep, bd_list->eqp_bdi))) {
+ available_bd = available1 - 1;
+ }
+ } else {
+ chain_bd1 = available1 / bd_list->num_bds_table;
+ available_bd = available1 - chain_bd1;
+ }
+ }
+ /*
+ * we need to keep one extra bd to check if ring is full or empty so
+ * reduce by 1
+ */
+ available_bd--;
+ dev_vdbg(bdc->dev, "available_bd:%d\n", available_bd);
+
+ return available_bd;
+}
+
+/* Notify the hardware after queueing the bd to bdl */
+void bdc_notify_xfr(struct bdc *bdc, u32 epnum)
+{
+ struct bdc_ep *ep = bdc->bdc_ep_array[epnum];
+
+ dev_vdbg(bdc->dev, "%s epnum:%d\n", __func__, epnum);
+ /*
+ * We don't have anyway to check if ep state is running,
+ * except the software flags.
+ */
+ if (unlikely(ep->flags & BDC_EP_STOP))
+ ep->flags &= ~BDC_EP_STOP;
+
+ bdc_writel(bdc->regs, BDC_XSFNTF, epnum);
+}
+
+/* returns the bd corresponding to bdi */
+static struct bdc_bd *bdi_to_bd(struct bdc_ep *ep, int bdi)
+{
+ int tbi = bdi_to_tbi(ep, bdi);
+ int local_bdi = 0;
+
+ local_bdi = bdi - (tbi * ep->bd_list.num_bds_table);
+ dev_vdbg(ep->bdc->dev,
+ "%s bdi:%d local_bdi:%d\n",
+ __func__, bdi, local_bdi);
+
+ return (ep->bd_list.bd_table_array[tbi]->start_bd + local_bdi);
+}
+
+/* Advance the enqueue pointer */
+static void ep_bdlist_eqp_adv(struct bdc_ep *ep)
+{
+ ep->bd_list.eqp_bdi++;
+ /* if it's chain bd, then move to next */
+ if (((ep->bd_list.eqp_bdi + 1) % ep->bd_list.num_bds_table) == 0)
+ ep->bd_list.eqp_bdi++;
+
+ /* if the eqp is pointing to last + 1 then move back to 0 */
+ if (ep->bd_list.eqp_bdi == (ep->bd_list.max_bdi + 1))
+ ep->bd_list.eqp_bdi = 0;
+}
+
+/* Setup the first bd for ep0 transfer */
+static int setup_first_bd_ep0(struct bdc *bdc, struct bdc_req *req, u32 *dword3)
+{
+ u16 wValue;
+ u32 req_len;
+
+ req->ep->dir = 0;
+ req_len = req->usb_req.length;
+ switch (bdc->ep0_state) {
+ case WAIT_FOR_DATA_START:
+ *dword3 |= BD_TYPE_DS;
+ if (bdc->setup_pkt.bRequestType & USB_DIR_IN)
+ *dword3 |= BD_DIR_IN;
+
+ /* check if zlp will be needed */
+ wValue = le16_to_cpu(bdc->setup_pkt.wValue);
+ if ((wValue > req_len) &&
+ (req_len % bdc->gadget.ep0->maxpacket == 0)) {
+ dev_dbg(bdc->dev, "ZLP needed wVal:%d len:%d MaxP:%d\n",
+ wValue, req_len,
+ bdc->gadget.ep0->maxpacket);
+ bdc->zlp_needed = true;
+ }
+ break;
+
+ case WAIT_FOR_STATUS_START:
+ *dword3 |= BD_TYPE_SS;
+ if (!le16_to_cpu(bdc->setup_pkt.wLength) ||
+ !(bdc->setup_pkt.bRequestType & USB_DIR_IN))
+ *dword3 |= BD_DIR_IN;
+ break;
+ default:
+ dev_err(bdc->dev,
+ "Unknown ep0 state for queueing bd ep0_state:%s\n",
+ ep0_state_string[bdc->ep0_state]);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* Setup the bd dma descriptor for a given request */
+static int setup_bd_list_xfr(struct bdc *bdc, struct bdc_req *req, int num_bds)
+{
+ dma_addr_t buf_add = req->usb_req.dma;
+ u32 maxp, tfs, dword2, dword3;
+ struct bd_transfer *bd_xfr;
+ struct bd_list *bd_list;
+ struct bdc_ep *ep;
+ struct bdc_bd *bd;
+ int ret, bdnum;
+ u32 req_len;
+
+ ep = req->ep;
+ bd_list = &ep->bd_list;
+ bd_xfr = &req->bd_xfr;
+ bd_xfr->req = req;
+ bd_xfr->start_bdi = bd_list->eqp_bdi;
+ bd = bdi_to_bd(ep, bd_list->eqp_bdi);
+ req_len = req->usb_req.length;
+ maxp = usb_endpoint_maxp(ep->desc) & 0x7ff;
+ tfs = roundup(req->usb_req.length, maxp);
+ tfs = tfs/maxp;
+ dev_vdbg(bdc->dev, "%s ep:%s num_bds:%d tfs:%d r_len:%d bd:%p\n",
+ __func__, ep->name, num_bds, tfs, req_len, bd);
+
+ for (bdnum = 0; bdnum < num_bds; bdnum++) {
+ dword2 = dword3 = 0;
+ /* First bd */
+ if (!bdnum) {
+ dword3 |= BD_SOT|BD_SBF|(tfs<<BD_TFS_SHIFT);
+ dword2 |= BD_LTF;
+ /* format of first bd for ep0 is different than other */
+ if (ep->ep_num == 1) {
+ ret = setup_first_bd_ep0(bdc, req, &dword3);
+ if (ret)
+ return ret;
+ }
+ }
+ if (!req->ep->dir)
+ dword3 |= BD_ISP;
+
+ if (req_len > BD_MAX_BUFF_SIZE) {
+ dword2 |= BD_MAX_BUFF_SIZE;
+ req_len -= BD_MAX_BUFF_SIZE;
+ } else {
+ /* this should be the last bd */
+ dword2 |= req_len;
+ dword3 |= BD_IOC;
+ dword3 |= BD_EOT;
+ }
+ /* Currently only 1 INT target is supported */
+ dword2 |= BD_INTR_TARGET(0);
+ bd = bdi_to_bd(ep, ep->bd_list.eqp_bdi);
+ if (unlikely(!bd)) {
+ dev_err(bdc->dev, "Err bd pointing to wrong addr\n");
+ return -EINVAL;
+ }
+ /* write bd */
+ bd->offset[0] = cpu_to_le32(lower_32_bits(buf_add));
+ bd->offset[1] = cpu_to_le32(upper_32_bits(buf_add));
+ bd->offset[2] = cpu_to_le32(dword2);
+ bd->offset[3] = cpu_to_le32(dword3);
+ /* advance eqp pointer */
+ ep_bdlist_eqp_adv(ep);
+ /* advance the buff pointer */
+ buf_add += BD_MAX_BUFF_SIZE;
+ dev_vdbg(bdc->dev, "buf_add:%08llx req_len:%d bd:%p eqp:%d\n",
+ (unsigned long long)buf_add, req_len, bd,
+ ep->bd_list.eqp_bdi);
+ bd = bdi_to_bd(ep, ep->bd_list.eqp_bdi);
+ bd->offset[3] = cpu_to_le32(BD_SBF);
+ }
+ /* clear the STOP BD fetch bit from the first bd of this xfr */
+ bd = bdi_to_bd(ep, bd_xfr->start_bdi);
+ bd->offset[3] &= cpu_to_le32(~BD_SBF);
+ /* the new eqp will be next hw dqp */
+ bd_xfr->num_bds = num_bds;
+ bd_xfr->next_hwd_bdi = ep->bd_list.eqp_bdi;
+ /* everything is written correctly before notifying the HW */
+ wmb();
+
+ return 0;
+}
+
+/* Queue the xfr */
+static int bdc_queue_xfr(struct bdc *bdc, struct bdc_req *req)
+{
+ int num_bds, bd_available;
+ struct bdc_ep *ep;
+ int ret;
+
+ ep = req->ep;
+ dev_dbg(bdc->dev, "%s req:%p\n", __func__, req);
+ dev_dbg(bdc->dev, "eqp_bdi:%d hwd_bdi:%d\n",
+ ep->bd_list.eqp_bdi, ep->bd_list.hwd_bdi);
+
+ num_bds = bd_needed_req(req);
+ bd_available = bd_available_ep(ep);
+
+ /* how many bd's are avaialble on ep */
+ if (num_bds > bd_available)
+ return -ENOMEM;
+
+ ret = setup_bd_list_xfr(bdc, req, num_bds);
+ if (ret)
+ return ret;
+ list_add_tail(&req->queue, &ep->queue);
+ bdc_dbg_bd_list(bdc, ep);
+ bdc_notify_xfr(bdc, ep->ep_num);
+
+ return 0;
+}
+
+/* callback to gadget layer when xfr completes */
+static void bdc_req_complete(struct bdc_ep *ep, struct bdc_req *req,
+ int status)
+{
+ struct bdc *bdc = ep->bdc;
+
+ if (req == NULL || &req->queue == NULL || &req->usb_req == NULL)
+ return;
+
+ dev_dbg(bdc->dev, "%s ep:%s status:%d\n", __func__, ep->name, status);
+ list_del(&req->queue);
+ req->usb_req.status = status;
+ usb_gadget_unmap_request(&bdc->gadget, &req->usb_req, ep->dir);
+ if (req->usb_req.complete) {
+ spin_unlock(&bdc->lock);
+ usb_gadget_giveback_request(&ep->usb_ep, &req->usb_req);
+ spin_lock(&bdc->lock);
+ }
+}
+
+/* Disable the endpoint */
+int bdc_ep_disable(struct bdc_ep *ep)
+{
+ struct bdc_req *req;
+ struct bdc *bdc;
+ int ret;
+
+ ret = 0;
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s() ep->ep_num=%d\n", __func__, ep->ep_num);
+ /* Stop the endpoint */
+ ret = bdc_stop_ep(bdc, ep->ep_num);
+
+ /*
+ * Intentionally don't check the ret value of stop, it can fail in
+ * disconnect scenarios, continue with dconfig
+ */
+ /* de-queue any pending requests */
+ while (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, struct bdc_req,
+ queue);
+ bdc_req_complete(ep, req, -ESHUTDOWN);
+ }
+ /* deconfigure the endpoint */
+ ret = bdc_dconfig_ep(bdc, ep);
+ if (ret)
+ dev_warn(bdc->dev,
+ "dconfig fail but continue with memory free");
+
+ ep->flags = 0;
+ /* ep0 memory is not freed, but reused on next connect sr */
+ if (ep->ep_num == 1)
+ return 0;
+
+ /* Free the bdl memory */
+ ep_bd_list_free(ep, ep->bd_list.num_tabs);
+ ep->desc = NULL;
+ ep->comp_desc = NULL;
+ ep->usb_ep.desc = NULL;
+ ep->ep_type = 0;
+
+ return ret;
+}
+
+/* Enable the ep */
+int bdc_ep_enable(struct bdc_ep *ep)
+{
+ struct bdc *bdc;
+ int ret = 0;
+
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s NUM_TABLES:%d %d\n",
+ __func__, NUM_TABLES, NUM_TABLES_ISOCH);
+
+ ret = ep_bd_list_alloc(ep);
+ if (ret) {
+ dev_err(bdc->dev, "ep bd list allocation failed:%d\n", ret);
+ return -ENOMEM;
+ }
+ bdc_dbg_bd_list(bdc, ep);
+ /* only for ep0: config ep is called for ep0 from connect event */
+ ep->flags |= BDC_EP_ENABLED;
+ if (ep->ep_num == 1)
+ return ret;
+
+ /* Issue a configure endpoint command */
+ ret = bdc_config_ep(bdc, ep);
+ if (ret)
+ return ret;
+
+ ep->usb_ep.maxpacket = usb_endpoint_maxp(ep->desc);
+ ep->usb_ep.desc = ep->desc;
+ ep->usb_ep.comp_desc = ep->comp_desc;
+ ep->ep_type = usb_endpoint_type(ep->desc);
+ ep->flags |= BDC_EP_ENABLED;
+
+ return 0;
+}
+
+/* EP0 related code */
+
+/* Queue a status stage BD */
+static int ep0_queue_status_stage(struct bdc *bdc)
+{
+ struct bdc_req *status_req;
+ struct bdc_ep *ep;
+
+ status_req = &bdc->status_req;
+ ep = bdc->bdc_ep_array[1];
+ status_req->ep = ep;
+ status_req->usb_req.length = 0;
+ status_req->usb_req.status = -EINPROGRESS;
+ status_req->usb_req.actual = 0;
+ status_req->usb_req.complete = NULL;
+ bdc_queue_xfr(bdc, status_req);
+
+ return 0;
+}
+
+/* Queue xfr on ep0 */
+static int ep0_queue(struct bdc_ep *ep, struct bdc_req *req)
+{
+ struct bdc *bdc;
+ int ret;
+
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ req->usb_req.actual = 0;
+ req->usb_req.status = -EINPROGRESS;
+ req->epnum = ep->ep_num;
+
+ if (bdc->delayed_status) {
+ bdc->delayed_status = false;
+ /* if status stage was delayed? */
+ if (bdc->ep0_state == WAIT_FOR_STATUS_START) {
+ /* Queue a status stage BD */
+ ep0_queue_status_stage(bdc);
+ bdc->ep0_state = WAIT_FOR_STATUS_XMIT;
+ return 0;
+ }
+ } else {
+ /*
+ * if delayed status is false and 0 length transfer is requested
+ * i.e. for status stage of some setup request, then just
+ * return from here the status stage is queued independently
+ */
+ if (req->usb_req.length == 0)
+ return 0;
+
+ }
+ ret = usb_gadget_map_request(&bdc->gadget, &req->usb_req, ep->dir);
+ if (ret) {
+ dev_err(bdc->dev, "dma mapping failed %s\n", ep->name);
+ return ret;
+ }
+
+ return bdc_queue_xfr(bdc, req);
+}
+
+/* Queue data stage */
+static int ep0_queue_data_stage(struct bdc *bdc)
+{
+ struct usb_request *ep0_usb_req;
+ struct bdc_ep *ep;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ ep0_usb_req = &bdc->ep0_req.usb_req;
+ ep = bdc->bdc_ep_array[1];
+ bdc->ep0_req.ep = ep;
+ bdc->ep0_req.usb_req.complete = NULL;
+
+ return ep0_queue(ep, &bdc->ep0_req);
+}
+
+/* Queue req on ep */
+static int ep_queue(struct bdc_ep *ep, struct bdc_req *req)
+{
+ struct bdc *bdc;
+ int ret = 0;
+
+ bdc = ep->bdc;
+ if (!req || !ep || !ep->usb_ep.desc)
+ return -EINVAL;
+
+ req->usb_req.actual = 0;
+ req->usb_req.status = -EINPROGRESS;
+ req->epnum = ep->ep_num;
+
+ ret = usb_gadget_map_request(&bdc->gadget, &req->usb_req, ep->dir);
+ if (ret) {
+ dev_err(bdc->dev, "dma mapping failed\n");
+ return ret;
+ }
+
+ return bdc_queue_xfr(bdc, req);
+}
+
+/* Dequeue a request from ep */
+static int ep_dequeue(struct bdc_ep *ep, struct bdc_req *req)
+{
+ int start_bdi, end_bdi, tbi, eqp_bdi, curr_hw_dqpi;
+ bool start_pending, end_pending;
+ bool first_remove = false;
+ struct bdc_req *first_req;
+ struct bdc_bd *bd_start;
+ struct bd_table *table;
+ dma_addr_t next_bd_dma;
+ u64 deq_ptr_64 = 0;
+ struct bdc *bdc;
+ u32 tmp_32;
+ int ret;
+
+ bdc = ep->bdc;
+ start_pending = end_pending = false;
+ eqp_bdi = ep->bd_list.eqp_bdi - 1;
+
+ if (eqp_bdi < 0)
+ eqp_bdi = ep->bd_list.max_bdi;
+
+ start_bdi = req->bd_xfr.start_bdi;
+ end_bdi = find_end_bdi(ep, req->bd_xfr.next_hwd_bdi);
+
+ dev_dbg(bdc->dev, "%s ep:%s start:%d end:%d\n",
+ __func__, ep->name, start_bdi, end_bdi);
+ dev_dbg(bdc->dev, "ep_dequeue ep=%p ep->desc=%p\n",
+ ep, (void *)ep->usb_ep.desc);
+ /* Stop the ep to see where the HW is ? */
+ ret = bdc_stop_ep(bdc, ep->ep_num);
+ /* if there is an issue with stopping ep, then no need to go further */
+ if (ret)
+ return 0;
+
+ /*
+ * After endpoint is stopped, there can be 3 cases, the request
+ * is processed, pending or in the middle of processing
+ */
+
+ /* The current hw dequeue pointer */
+ tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(0));
+ deq_ptr_64 = tmp_32;
+ tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(1));
+ deq_ptr_64 |= ((u64)tmp_32 << 32);
+
+ /* we have the dma addr of next bd that will be fetched by hardware */
+ curr_hw_dqpi = bd_add_to_bdi(ep, deq_ptr_64);
+ if (curr_hw_dqpi < 0)
+ return curr_hw_dqpi;
+
+ /*
+ * curr_hw_dqpi points to actual dqp of HW and HW owns bd's from
+ * curr_hw_dqbdi..eqp_bdi.
+ */
+
+ /* Check if start_bdi and end_bdi are in range of HW owned BD's */
+ if (curr_hw_dqpi > eqp_bdi) {
+ /* there is a wrap from last to 0 */
+ if (start_bdi >= curr_hw_dqpi || start_bdi <= eqp_bdi) {
+ start_pending = true;
+ end_pending = true;
+ } else if (end_bdi >= curr_hw_dqpi || end_bdi <= eqp_bdi) {
+ end_pending = true;
+ }
+ } else {
+ if (start_bdi >= curr_hw_dqpi) {
+ start_pending = true;
+ end_pending = true;
+ } else if (end_bdi >= curr_hw_dqpi) {
+ end_pending = true;
+ }
+ }
+ dev_dbg(bdc->dev,
+ "start_pending:%d end_pending:%d speed:%d\n",
+ start_pending, end_pending, bdc->gadget.speed);
+
+ /* If both start till end are processes, we cannot deq req */
+ if (!start_pending && !end_pending)
+ return -EINVAL;
+
+ /*
+ * if ep_dequeue is called after disconnect then just return
+ * success from here
+ */
+ if (bdc->gadget.speed == USB_SPEED_UNKNOWN)
+ return 0;
+ tbi = bdi_to_tbi(ep, req->bd_xfr.next_hwd_bdi);
+ table = ep->bd_list.bd_table_array[tbi];
+ next_bd_dma = table->dma +
+ sizeof(struct bdc_bd)*(req->bd_xfr.next_hwd_bdi -
+ tbi * ep->bd_list.num_bds_table);
+
+ first_req = list_first_entry(&ep->queue, struct bdc_req,
+ queue);
+
+ if (req == first_req)
+ first_remove = true;
+
+ /*
+ * Due to HW limitation we need to bypadd chain bd's and issue ep_bla,
+ * incase if start is pending this is the first request in the list
+ * then issue ep_bla instead of marking as chain bd
+ */
+ if (start_pending && !first_remove) {
+ /*
+ * Mark the start bd as Chain bd, and point the chain
+ * bd to next_bd_dma
+ */
+ bd_start = bdi_to_bd(ep, start_bdi);
+ bd_start->offset[0] = cpu_to_le32(lower_32_bits(next_bd_dma));
+ bd_start->offset[1] = cpu_to_le32(upper_32_bits(next_bd_dma));
+ bd_start->offset[2] = 0x0;
+ bd_start->offset[3] = cpu_to_le32(MARK_CHAIN_BD);
+ bdc_dbg_bd_list(bdc, ep);
+ } else if (end_pending) {
+ /*
+ * The transfer is stopped in the middle, move the
+ * HW deq pointer to next_bd_dma
+ */
+ ret = bdc_ep_bla(bdc, ep, next_bd_dma);
+ if (ret) {
+ dev_err(bdc->dev, "error in ep_bla:%d\n", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+/* Halt/Clear the ep based on value */
+static int ep_set_halt(struct bdc_ep *ep, u32 value)
+{
+ struct bdc *bdc;
+ int ret;
+
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s ep:%s value=%d\n", __func__, ep->name, value);
+
+ if (value) {
+ dev_dbg(bdc->dev, "Halt\n");
+ if (ep->ep_num == 1)
+ bdc->ep0_state = WAIT_FOR_SETUP;
+
+ ret = bdc_ep_set_stall(bdc, ep->ep_num);
+ if (ret)
+ dev_err(bdc->dev, "failed to %s STALL on %s\n",
+ value ? "set" : "clear", ep->name);
+ else
+ ep->flags |= BDC_EP_STALL;
+ } else {
+ /* Clear */
+ dev_dbg(bdc->dev, "Before Clear\n");
+ ret = bdc_ep_clear_stall(bdc, ep->ep_num);
+ if (ret)
+ dev_err(bdc->dev, "failed to %s STALL on %s\n",
+ value ? "set" : "clear", ep->name);
+ else
+ ep->flags &= ~BDC_EP_STALL;
+ dev_dbg(bdc->dev, "After Clear\n");
+ }
+
+ return ret;
+}
+
+/* Free all the ep */
+void bdc_free_ep(struct bdc *bdc)
+{
+ struct bdc_ep *ep;
+ u8 epnum;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ for (epnum = 1; epnum < bdc->num_eps; epnum++) {
+ ep = bdc->bdc_ep_array[epnum];
+ if (!ep)
+ continue;
+
+ if (ep->flags & BDC_EP_ENABLED)
+ ep_bd_list_free(ep, ep->bd_list.num_tabs);
+
+ /* ep0 is not in this gadget list */
+ if (epnum != 1)
+ list_del(&ep->usb_ep.ep_list);
+
+ kfree(ep);
+ }
+}
+
+/* USB2 spec, section 7.1.20 */
+static int bdc_set_test_mode(struct bdc *bdc)
+{
+ u32 usb2_pm;
+
+ usb2_pm = bdc_readl(bdc->regs, BDC_USPPM2);
+ usb2_pm &= ~BDC_PTC_MASK;
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ switch (bdc->test_mode) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ usb2_pm |= bdc->test_mode << 28;
+ break;
+ default:
+ return -EINVAL;
+ }
+ dev_dbg(bdc->dev, "usb2_pm=%08x", usb2_pm);
+ bdc_writel(bdc->regs, BDC_USPPM2, usb2_pm);
+
+ return 0;
+}
+
+/*
+ * Helper function to handle Transfer status report with status as either
+ * success or short
+ */
+static void handle_xsr_succ_status(struct bdc *bdc, struct bdc_ep *ep,
+ struct bdc_sr *sreport)
+{
+ int short_bdi, start_bdi, end_bdi, max_len_bds, chain_bds;
+ struct bd_list *bd_list = &ep->bd_list;
+ int actual_length, length_short;
+ struct bd_transfer *bd_xfr;
+ struct bdc_bd *short_bd;
+ struct bdc_req *req;
+ u64 deq_ptr_64 = 0;
+ int status = 0;
+ int sr_status;
+ u32 tmp_32;
+
+ dev_dbg(bdc->dev, "%s ep:%p\n", __func__, ep);
+ bdc_dbg_srr(bdc, 0);
+ /* do not process thie sr if ignore flag is set */
+ if (ep->ignore_next_sr) {
+ ep->ignore_next_sr = false;
+ return;
+ }
+
+ if (unlikely(list_empty(&ep->queue))) {
+ dev_warn(bdc->dev, "xfr srr with no BD's queued\n");
+ return;
+ }
+ req = list_entry(ep->queue.next, struct bdc_req,
+ queue);
+
+ bd_xfr = &req->bd_xfr;
+ sr_status = XSF_STS(le32_to_cpu(sreport->offset[3]));
+
+ /*
+ * sr_status is short and this transfer has more than 1 bd then it needs
+ * special handling, this is only applicable for bulk and ctrl
+ */
+ if (sr_status == XSF_SHORT && bd_xfr->num_bds > 1) {
+ /*
+ * This is multi bd xfr, lets see which bd
+ * caused short transfer and how many bytes have been
+ * transferred so far.
+ */
+ tmp_32 = le32_to_cpu(sreport->offset[0]);
+ deq_ptr_64 = tmp_32;
+ tmp_32 = le32_to_cpu(sreport->offset[1]);
+ deq_ptr_64 |= ((u64)tmp_32 << 32);
+ short_bdi = bd_add_to_bdi(ep, deq_ptr_64);
+ if (unlikely(short_bdi < 0))
+ dev_warn(bdc->dev, "bd doesn't exist?\n");
+
+ start_bdi = bd_xfr->start_bdi;
+ /*
+ * We know the start_bdi and short_bdi, how many xfr
+ * bds in between
+ */
+ if (start_bdi <= short_bdi) {
+ max_len_bds = short_bdi - start_bdi;
+ if (max_len_bds <= bd_list->num_bds_table) {
+ if (!(bdi_to_tbi(ep, start_bdi) ==
+ bdi_to_tbi(ep, short_bdi)))
+ max_len_bds--;
+ } else {
+ chain_bds = max_len_bds/bd_list->num_bds_table;
+ max_len_bds -= chain_bds;
+ }
+ } else {
+ /* there is a wrap in the ring within a xfr */
+ chain_bds = (bd_list->max_bdi - start_bdi)/
+ bd_list->num_bds_table;
+ chain_bds += short_bdi/bd_list->num_bds_table;
+ max_len_bds = bd_list->max_bdi - start_bdi;
+ max_len_bds += short_bdi;
+ max_len_bds -= chain_bds;
+ }
+ /* max_len_bds is the number of full length bds */
+ end_bdi = find_end_bdi(ep, bd_xfr->next_hwd_bdi);
+ if (!(end_bdi == short_bdi))
+ ep->ignore_next_sr = true;
+
+ actual_length = max_len_bds * BD_MAX_BUFF_SIZE;
+ short_bd = bdi_to_bd(ep, short_bdi);
+ /* length queued */
+ length_short = le32_to_cpu(short_bd->offset[2]) & 0x1FFFFF;
+ /* actual length trensfered */
+ length_short -= SR_BD_LEN(le32_to_cpu(sreport->offset[2]));
+ actual_length += length_short;
+ req->usb_req.actual = actual_length;
+ } else {
+ req->usb_req.actual = req->usb_req.length -
+ SR_BD_LEN(le32_to_cpu(sreport->offset[2]));
+ dev_dbg(bdc->dev,
+ "len=%d actual=%d bd_xfr->next_hwd_bdi:%d\n",
+ req->usb_req.length, req->usb_req.actual,
+ bd_xfr->next_hwd_bdi);
+ }
+
+ /* Update the dequeue pointer */
+ ep->bd_list.hwd_bdi = bd_xfr->next_hwd_bdi;
+ if (req->usb_req.actual < req->usb_req.length) {
+ dev_dbg(bdc->dev, "short xfr on %d\n", ep->ep_num);
+ if (req->usb_req.short_not_ok)
+ status = -EREMOTEIO;
+ }
+ bdc_req_complete(ep, bd_xfr->req, status);
+}
+
+/* EP0 setup related packet handlers */
+
+/*
+ * Setup packet received, just store the packet and process on next DS or SS
+ * started SR
+ */
+void bdc_xsf_ep0_setup_recv(struct bdc *bdc, struct bdc_sr *sreport)
+{
+ struct usb_ctrlrequest *setup_pkt;
+ u32 len;
+
+ dev_dbg(bdc->dev,
+ "%s ep0_state:%s\n",
+ __func__, ep0_state_string[bdc->ep0_state]);
+ /* Store received setup packet */
+ setup_pkt = &bdc->setup_pkt;
+ memcpy(setup_pkt, &sreport->offset[0], sizeof(*setup_pkt));
+ len = le16_to_cpu(setup_pkt->wLength);
+ if (!len)
+ bdc->ep0_state = WAIT_FOR_STATUS_START;
+ else
+ bdc->ep0_state = WAIT_FOR_DATA_START;
+
+
+ dev_dbg(bdc->dev,
+ "%s exit ep0_state:%s\n",
+ __func__, ep0_state_string[bdc->ep0_state]);
+}
+
+/* Stall ep0 */
+static void ep0_stall(struct bdc *bdc)
+{
+ struct bdc_ep *ep = bdc->bdc_ep_array[1];
+ struct bdc_req *req;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ bdc->delayed_status = false;
+ ep_set_halt(ep, 1);
+
+ /* de-queue any pendig requests */
+ while (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, struct bdc_req,
+ queue);
+ bdc_req_complete(ep, req, -ESHUTDOWN);
+ }
+}
+
+/* SET_ADD handlers */
+static int ep0_set_address(struct bdc *bdc, struct usb_ctrlrequest *ctrl)
+{
+ enum usb_device_state state = bdc->gadget.state;
+ int ret = 0;
+ u32 addr;
+
+ addr = le16_to_cpu(ctrl->wValue);
+ dev_dbg(bdc->dev,
+ "%s addr:%d dev state:%d\n",
+ __func__, addr, state);
+
+ if (addr > 127)
+ return -EINVAL;
+
+ switch (state) {
+ case USB_STATE_DEFAULT:
+ case USB_STATE_ADDRESS:
+ /* Issue Address device command */
+ ret = bdc_address_device(bdc, addr);
+ if (ret)
+ return ret;
+
+ if (addr)
+ usb_gadget_set_state(&bdc->gadget, USB_STATE_ADDRESS);
+ else
+ usb_gadget_set_state(&bdc->gadget, USB_STATE_DEFAULT);
+
+ bdc->dev_addr = addr;
+ break;
+ default:
+ dev_warn(bdc->dev,
+ "SET Address in wrong device state %d\n",
+ state);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+/* Handler for SET/CLEAR FEATURE requests for device */
+static int ep0_handle_feature_dev(struct bdc *bdc, u16 wValue,
+ u16 wIndex, bool set)
+{
+ enum usb_device_state state = bdc->gadget.state;
+ u32 usppms = 0;
+
+ dev_dbg(bdc->dev, "%s set:%d dev state:%d\n",
+ __func__, set, state);
+ switch (wValue) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ dev_dbg(bdc->dev, "USB_DEVICE_REMOTE_WAKEUP\n");
+ if (set)
+ bdc->devstatus |= REMOTE_WAKE_ENABLE;
+ else
+ bdc->devstatus &= ~REMOTE_WAKE_ENABLE;
+ break;
+
+ case USB_DEVICE_TEST_MODE:
+ dev_dbg(bdc->dev, "USB_DEVICE_TEST_MODE\n");
+ if ((wIndex & 0xFF) ||
+ (bdc->gadget.speed != USB_SPEED_HIGH) || !set)
+ return -EINVAL;
+
+ bdc->test_mode = wIndex >> 8;
+ break;
+
+ case USB_DEVICE_U1_ENABLE:
+ dev_dbg(bdc->dev, "USB_DEVICE_U1_ENABLE\n");
+
+ if (bdc->gadget.speed != USB_SPEED_SUPER ||
+ state != USB_STATE_CONFIGURED)
+ return -EINVAL;
+
+ usppms = bdc_readl(bdc->regs, BDC_USPPMS);
+ if (set) {
+ /* clear previous u1t */
+ usppms &= ~BDC_U1T(BDC_U1T_MASK);
+ usppms |= BDC_U1T(U1_TIMEOUT);
+ usppms |= BDC_U1E | BDC_PORT_W1S;
+ bdc->devstatus |= (1 << USB_DEV_STAT_U1_ENABLED);
+ } else {
+ usppms &= ~BDC_U1E;
+ usppms |= BDC_PORT_W1S;
+ bdc->devstatus &= ~(1 << USB_DEV_STAT_U1_ENABLED);
+ }
+ bdc_writel(bdc->regs, BDC_USPPMS, usppms);
+ break;
+
+ case USB_DEVICE_U2_ENABLE:
+ dev_dbg(bdc->dev, "USB_DEVICE_U2_ENABLE\n");
+
+ if (bdc->gadget.speed != USB_SPEED_SUPER ||
+ state != USB_STATE_CONFIGURED)
+ return -EINVAL;
+
+ usppms = bdc_readl(bdc->regs, BDC_USPPMS);
+ if (set) {
+ usppms |= BDC_U2E;
+ usppms |= BDC_U2A;
+ bdc->devstatus |= (1 << USB_DEV_STAT_U2_ENABLED);
+ } else {
+ usppms &= ~BDC_U2E;
+ usppms &= ~BDC_U2A;
+ bdc->devstatus &= ~(1 << USB_DEV_STAT_U2_ENABLED);
+ }
+ bdc_writel(bdc->regs, BDC_USPPMS, usppms);
+ break;
+
+ case USB_DEVICE_LTM_ENABLE:
+ dev_dbg(bdc->dev, "USB_DEVICE_LTM_ENABLE?\n");
+ if (bdc->gadget.speed != USB_SPEED_SUPER ||
+ state != USB_STATE_CONFIGURED)
+ return -EINVAL;
+ break;
+ default:
+ dev_err(bdc->dev, "Unknown wValue:%d\n", wValue);
+ return -EOPNOTSUPP;
+ } /* USB_RECIP_DEVICE end */
+
+ return 0;
+}
+
+/* SET/CLEAR FEATURE handler */
+static int ep0_handle_feature(struct bdc *bdc,
+ struct usb_ctrlrequest *setup_pkt, bool set)
+{
+ enum usb_device_state state = bdc->gadget.state;
+ struct bdc_ep *ep;
+ u16 wValue;
+ u16 wIndex;
+ int epnum;
+
+ wValue = le16_to_cpu(setup_pkt->wValue);
+ wIndex = le16_to_cpu(setup_pkt->wIndex);
+
+ dev_dbg(bdc->dev,
+ "%s wValue=%d wIndex=%d devstate=%08x speed=%d set=%d",
+ __func__, wValue, wIndex, state,
+ bdc->gadget.speed, set);
+
+ switch (setup_pkt->bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ return ep0_handle_feature_dev(bdc, wValue, wIndex, set);
+ case USB_RECIP_INTERFACE:
+ dev_dbg(bdc->dev, "USB_RECIP_INTERFACE\n");
+ /* USB3 spec, sec 9.4.9 */
+ if (wValue != USB_INTRF_FUNC_SUSPEND)
+ return -EINVAL;
+ /* USB3 spec, Table 9-8 */
+ if (set) {
+ if (wIndex & USB_INTRF_FUNC_SUSPEND_RW) {
+ dev_dbg(bdc->dev, "SET REMOTE_WAKEUP\n");
+ bdc->devstatus |= REMOTE_WAKE_ENABLE;
+ } else {
+ dev_dbg(bdc->dev, "CLEAR REMOTE_WAKEUP\n");
+ bdc->devstatus &= ~REMOTE_WAKE_ENABLE;
+ }
+ }
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ dev_dbg(bdc->dev, "USB_RECIP_ENDPOINT\n");
+ if (wValue != USB_ENDPOINT_HALT)
+ return -EINVAL;
+
+ epnum = wIndex & USB_ENDPOINT_NUMBER_MASK;
+ if (epnum) {
+ if ((wIndex & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
+ epnum = epnum * 2 + 1;
+ else
+ epnum *= 2;
+ } else {
+ epnum = 1; /*EP0*/
+ }
+ /*
+ * If CLEAR_FEATURE on ep0 then don't do anything as the stall
+ * condition on ep0 has already been cleared when SETUP packet
+ * was received.
+ */
+ if (epnum == 1 && !set) {
+ dev_dbg(bdc->dev, "ep0 stall already cleared\n");
+ return 0;
+ }
+ dev_dbg(bdc->dev, "epnum=%d\n", epnum);
+ ep = bdc->bdc_ep_array[epnum];
+ if (!ep)
+ return -EINVAL;
+
+ return ep_set_halt(ep, set);
+ default:
+ dev_err(bdc->dev, "Unknown recipient\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* GET_STATUS request handler */
+static int ep0_handle_status(struct bdc *bdc,
+ struct usb_ctrlrequest *setup_pkt)
+{
+ enum usb_device_state state = bdc->gadget.state;
+ struct bdc_ep *ep;
+ u16 usb_status = 0;
+ u32 epnum;
+ u16 wIndex;
+
+ /* USB2.0 spec sec 9.4.5 */
+ if (state == USB_STATE_DEFAULT)
+ return -EINVAL;
+ wIndex = le16_to_cpu(setup_pkt->wIndex);
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ usb_status = bdc->devstatus;
+ switch (setup_pkt->bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ dev_dbg(bdc->dev,
+ "USB_RECIP_DEVICE devstatus:%08x\n",
+ bdc->devstatus);
+ /* USB3 spec, sec 9.4.5 */
+ if (bdc->gadget.speed == USB_SPEED_SUPER)
+ usb_status &= ~REMOTE_WAKE_ENABLE;
+ break;
+
+ case USB_RECIP_INTERFACE:
+ dev_dbg(bdc->dev, "USB_RECIP_INTERFACE\n");
+ if (bdc->gadget.speed == USB_SPEED_SUPER) {
+ /*
+ * This should come from func for Func remote wkup
+ * usb_status |=1;
+ */
+ if (bdc->devstatus & REMOTE_WAKE_ENABLE)
+ usb_status |= REMOTE_WAKE_ENABLE;
+ } else {
+ usb_status = 0;
+ }
+
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ dev_dbg(bdc->dev, "USB_RECIP_ENDPOINT\n");
+ epnum = wIndex & USB_ENDPOINT_NUMBER_MASK;
+ if (epnum) {
+ if ((wIndex & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
+ epnum = epnum*2 + 1;
+ else
+ epnum *= 2;
+ } else {
+ epnum = 1; /* EP0 */
+ }
+
+ ep = bdc->bdc_ep_array[epnum];
+ if (!ep) {
+ dev_err(bdc->dev, "ISSUE, GET_STATUS for invalid EP ?");
+ return -EINVAL;
+ }
+ if (ep->flags & BDC_EP_STALL)
+ usb_status |= 1 << USB_ENDPOINT_HALT;
+
+ break;
+ default:
+ dev_err(bdc->dev, "Unknown recipient for get_status\n");
+ return -EINVAL;
+ }
+ /* prepare a data stage for GET_STATUS */
+ dev_dbg(bdc->dev, "usb_status=%08x\n", usb_status);
+ *(__le16 *)bdc->ep0_response_buff = cpu_to_le16(usb_status);
+ bdc->ep0_req.usb_req.length = 2;
+ bdc->ep0_req.usb_req.buf = &bdc->ep0_response_buff;
+ ep0_queue_data_stage(bdc);
+
+ return 0;
+}
+
+static void ep0_set_sel_cmpl(struct usb_ep *_ep, struct usb_request *_req)
+{
+ /* ep0_set_sel_cmpl */
+}
+
+/* Queue data stage to handle 6 byte SET_SEL request */
+static int ep0_set_sel(struct bdc *bdc,
+ struct usb_ctrlrequest *setup_pkt)
+{
+ struct bdc_ep *ep;
+ u16 wLength;
+ u16 wValue;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ wValue = le16_to_cpu(setup_pkt->wValue);
+ wLength = le16_to_cpu(setup_pkt->wLength);
+ if (unlikely(wLength != 6)) {
+ dev_err(bdc->dev, "%s Wrong wLength:%d\n", __func__, wLength);
+ return -EINVAL;
+ }
+ ep = bdc->bdc_ep_array[1];
+ bdc->ep0_req.ep = ep;
+ bdc->ep0_req.usb_req.length = 6;
+ bdc->ep0_req.usb_req.buf = bdc->ep0_response_buff;
+ bdc->ep0_req.usb_req.complete = ep0_set_sel_cmpl;
+ ep0_queue_data_stage(bdc);
+
+ return 0;
+}
+
+/*
+ * Queue a 0 byte bd only if wLength is more than the length and and length is
+ * a multiple of MaxPacket then queue 0 byte BD
+ */
+static int ep0_queue_zlp(struct bdc *bdc)
+{
+ int ret;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ bdc->ep0_req.ep = bdc->bdc_ep_array[1];
+ bdc->ep0_req.usb_req.length = 0;
+ bdc->ep0_req.usb_req.complete = NULL;
+ bdc->ep0_state = WAIT_FOR_DATA_START;
+ ret = bdc_queue_xfr(bdc, &bdc->ep0_req);
+ if (ret) {
+ dev_err(bdc->dev, "err queueing zlp :%d\n", ret);
+ return ret;
+ }
+ bdc->ep0_state = WAIT_FOR_DATA_XMIT;
+
+ return 0;
+}
+
+/* Control request handler */
+static int handle_control_request(struct bdc *bdc)
+{
+ enum usb_device_state state = bdc->gadget.state;
+ struct usb_ctrlrequest *setup_pkt;
+ int delegate_setup = 0;
+ int ret = 0;
+ int config = 0;
+
+ setup_pkt = &bdc->setup_pkt;
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ if ((setup_pkt->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
+ switch (setup_pkt->bRequest) {
+ case USB_REQ_SET_ADDRESS:
+ dev_dbg(bdc->dev, "USB_REQ_SET_ADDRESS\n");
+ ret = ep0_set_address(bdc, setup_pkt);
+ bdc->devstatus &= DEVSTATUS_CLEAR;
+ break;
+
+ case USB_REQ_SET_CONFIGURATION:
+ dev_dbg(bdc->dev, "USB_REQ_SET_CONFIGURATION\n");
+ if (state == USB_STATE_ADDRESS) {
+ usb_gadget_set_state(&bdc->gadget,
+ USB_STATE_CONFIGURED);
+ } else if (state == USB_STATE_CONFIGURED) {
+ /*
+ * USB2 spec sec 9.4.7, if wValue is 0 then dev
+ * is moved to addressed state
+ */
+ config = le16_to_cpu(setup_pkt->wValue);
+ if (!config)
+ usb_gadget_set_state(
+ &bdc->gadget,
+ USB_STATE_ADDRESS);
+ }
+ delegate_setup = 1;
+ break;
+
+ case USB_REQ_SET_FEATURE:
+ dev_dbg(bdc->dev, "USB_REQ_SET_FEATURE\n");
+ ret = ep0_handle_feature(bdc, setup_pkt, 1);
+ break;
+
+ case USB_REQ_CLEAR_FEATURE:
+ dev_dbg(bdc->dev, "USB_REQ_CLEAR_FEATURE\n");
+ ret = ep0_handle_feature(bdc, setup_pkt, 0);
+ break;
+
+ case USB_REQ_GET_STATUS:
+ dev_dbg(bdc->dev, "USB_REQ_GET_STATUS\n");
+ ret = ep0_handle_status(bdc, setup_pkt);
+ break;
+
+ case USB_REQ_SET_SEL:
+ dev_dbg(bdc->dev, "USB_REQ_SET_SEL\n");
+ ret = ep0_set_sel(bdc, setup_pkt);
+ break;
+
+ case USB_REQ_SET_ISOCH_DELAY:
+ dev_warn(bdc->dev,
+ "USB_REQ_SET_ISOCH_DELAY not handled\n");
+ ret = 0;
+ break;
+ default:
+ delegate_setup = 1;
+ }
+ } else {
+ delegate_setup = 1;
+ }
+
+ if (delegate_setup) {
+ spin_unlock(&bdc->lock);
+ ret = bdc->gadget_driver->setup(&bdc->gadget, setup_pkt);
+ spin_lock(&bdc->lock);
+ }
+
+ return ret;
+}
+
+/* EP0: Data stage started */
+void bdc_xsf_ep0_data_start(struct bdc *bdc, struct bdc_sr *sreport)
+{
+ struct bdc_ep *ep;
+ int ret = 0;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ ep = bdc->bdc_ep_array[1];
+ /* If ep0 was stalled, the clear it first */
+ if (ep->flags & BDC_EP_STALL) {
+ ret = ep_set_halt(ep, 0);
+ if (ret)
+ goto err;
+ }
+ if (bdc->ep0_state != WAIT_FOR_DATA_START)
+ dev_warn(bdc->dev,
+ "Data stage not expected ep0_state:%s\n",
+ ep0_state_string[bdc->ep0_state]);
+
+ ret = handle_control_request(bdc);
+ if (ret == USB_GADGET_DELAYED_STATUS) {
+ /*
+ * The ep0 state will remain WAIT_FOR_DATA_START till
+ * we received ep_queue on ep0
+ */
+ bdc->delayed_status = true;
+ return;
+ }
+ if (!ret) {
+ bdc->ep0_state = WAIT_FOR_DATA_XMIT;
+ dev_dbg(bdc->dev,
+ "ep0_state:%s", ep0_state_string[bdc->ep0_state]);
+ return;
+ }
+err:
+ ep0_stall(bdc);
+}
+
+/* EP0: status stage started */
+void bdc_xsf_ep0_status_start(struct bdc *bdc, struct bdc_sr *sreport)
+{
+ struct usb_ctrlrequest *setup_pkt;
+ struct bdc_ep *ep;
+ int ret = 0;
+
+ dev_dbg(bdc->dev,
+ "%s ep0_state:%s",
+ __func__, ep0_state_string[bdc->ep0_state]);
+ ep = bdc->bdc_ep_array[1];
+
+ /* check if ZLP was queued? */
+ if (bdc->zlp_needed)
+ bdc->zlp_needed = false;
+
+ if (ep->flags & BDC_EP_STALL) {
+ ret = ep_set_halt(ep, 0);
+ if (ret)
+ goto err;
+ }
+
+ if ((bdc->ep0_state != WAIT_FOR_STATUS_START) &&
+ (bdc->ep0_state != WAIT_FOR_DATA_XMIT))
+ dev_err(bdc->dev,
+ "Status stage recv but ep0_state:%s\n",
+ ep0_state_string[bdc->ep0_state]);
+
+ /* check if data stage is in progress ? */
+ if (bdc->ep0_state == WAIT_FOR_DATA_XMIT) {
+ bdc->ep0_state = STATUS_PENDING;
+ /* Status stage will be queued upon Data stage transmit event */
+ dev_dbg(bdc->dev,
+ "status started but data not transmitted yet\n");
+ return;
+ }
+ setup_pkt = &bdc->setup_pkt;
+
+ /*
+ * 2 stage setup then only process the setup, for 3 stage setup the date
+ * stage is already handled
+ */
+ if (!le16_to_cpu(setup_pkt->wLength)) {
+ ret = handle_control_request(bdc);
+ if (ret == USB_GADGET_DELAYED_STATUS) {
+ bdc->delayed_status = true;
+ /* ep0_state will remain WAIT_FOR_STATUS_START */
+ return;
+ }
+ }
+ if (!ret) {
+ /* Queue a status stage BD */
+ ep0_queue_status_stage(bdc);
+ bdc->ep0_state = WAIT_FOR_STATUS_XMIT;
+ dev_dbg(bdc->dev,
+ "ep0_state:%s", ep0_state_string[bdc->ep0_state]);
+ return;
+ }
+err:
+ ep0_stall(bdc);
+}
+
+/* Helper function to update ep0 upon SR with xsf_succ or xsf_short */
+static void ep0_xsf_complete(struct bdc *bdc, struct bdc_sr *sreport)
+{
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ switch (bdc->ep0_state) {
+ case WAIT_FOR_DATA_XMIT:
+ bdc->ep0_state = WAIT_FOR_STATUS_START;
+ break;
+ case WAIT_FOR_STATUS_XMIT:
+ bdc->ep0_state = WAIT_FOR_SETUP;
+ if (bdc->test_mode) {
+ int ret;
+
+ dev_dbg(bdc->dev, "test_mode:%d\n", bdc->test_mode);
+ ret = bdc_set_test_mode(bdc);
+ if (ret < 0) {
+ dev_err(bdc->dev, "Err in setting Test mode\n");
+ return;
+ }
+ bdc->test_mode = 0;
+ }
+ break;
+ case STATUS_PENDING:
+ bdc_xsf_ep0_status_start(bdc, sreport);
+ break;
+
+ default:
+ dev_err(bdc->dev,
+ "Unknown ep0_state:%s\n",
+ ep0_state_string[bdc->ep0_state]);
+
+ }
+}
+
+/* xfr completion status report handler */
+void bdc_sr_xsf(struct bdc *bdc, struct bdc_sr *sreport)
+{
+ struct bdc_ep *ep;
+ u32 sr_status;
+ u8 ep_num;
+
+ ep_num = (le32_to_cpu(sreport->offset[3])>>4) & 0x1f;
+ ep = bdc->bdc_ep_array[ep_num];
+ if (!ep || !(ep->flags & BDC_EP_ENABLED)) {
+ dev_err(bdc->dev, "xsf for ep not enabled\n");
+ return;
+ }
+ /*
+ * check if this transfer is after link went from U3->U0 due
+ * to remote wakeup
+ */
+ if (bdc->devstatus & FUNC_WAKE_ISSUED) {
+ bdc->devstatus &= ~(FUNC_WAKE_ISSUED);
+ dev_dbg(bdc->dev, "%s clearing FUNC_WAKE_ISSUED flag\n",
+ __func__);
+ }
+ sr_status = XSF_STS(le32_to_cpu(sreport->offset[3]));
+ dev_dbg_ratelimited(bdc->dev, "%s sr_status=%d ep:%s\n",
+ __func__, sr_status, ep->name);
+
+ switch (sr_status) {
+ case XSF_SUCC:
+ case XSF_SHORT:
+ handle_xsr_succ_status(bdc, ep, sreport);
+ if (ep_num == 1)
+ ep0_xsf_complete(bdc, sreport);
+ break;
+
+ case XSF_SETUP_RECV:
+ case XSF_DATA_START:
+ case XSF_STATUS_START:
+ if (ep_num != 1) {
+ dev_err(bdc->dev,
+ "ep0 related packets on non ep0 endpoint");
+ return;
+ }
+ bdc->sr_xsf_ep0[sr_status - XSF_SETUP_RECV](bdc, sreport);
+ break;
+
+ case XSF_BABB:
+ if (ep_num == 1) {
+ dev_dbg(bdc->dev, "Babble on ep0 zlp_need:%d\n",
+ bdc->zlp_needed);
+ /*
+ * If the last completed transfer had wLength >Data Len,
+ * and Len is multiple of MaxPacket,then queue ZLP
+ */
+ if (bdc->zlp_needed) {
+ /* queue 0 length bd */
+ ep0_queue_zlp(bdc);
+ return;
+ }
+ }
+ dev_warn(bdc->dev, "Babble on ep not handled\n");
+ break;
+ default:
+ dev_warn(bdc->dev, "sr status not handled:%x\n", sr_status);
+ break;
+ }
+}
+
+static int bdc_gadget_ep_queue(struct usb_ep *_ep,
+ struct usb_request *_req, gfp_t gfp_flags)
+{
+ struct bdc_req *req;
+ unsigned long flags;
+ struct bdc_ep *ep;
+ struct bdc *bdc;
+ int ret;
+
+ if (!_ep || !_ep->desc)
+ return -ESHUTDOWN;
+
+ if (!_req || !_req->complete || !_req->buf)
+ return -EINVAL;
+
+ ep = to_bdc_ep(_ep);
+ req = to_bdc_req(_req);
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s ep:%p req:%p\n", __func__, ep, req);
+ dev_dbg(bdc->dev, "queuing request %p to %s length %d zero:%d\n",
+ _req, ep->name, _req->length, _req->zero);
+
+ if (!ep->usb_ep.desc) {
+ dev_warn(bdc->dev,
+ "trying to queue req %p to disabled %s\n",
+ _req, ep->name);
+ return -ESHUTDOWN;
+ }
+
+ if (_req->length > MAX_XFR_LEN) {
+ dev_warn(bdc->dev,
+ "req length > supported MAX:%d requested:%d\n",
+ MAX_XFR_LEN, _req->length);
+ return -EOPNOTSUPP;
+ }
+ spin_lock_irqsave(&bdc->lock, flags);
+ if (ep == bdc->bdc_ep_array[1])
+ ret = ep0_queue(ep, req);
+ else
+ ret = ep_queue(ep, req);
+
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static int bdc_gadget_ep_dequeue(struct usb_ep *_ep,
+ struct usb_request *_req)
+{
+ struct bdc_req *req;
+ unsigned long flags;
+ struct bdc_ep *ep;
+ struct bdc *bdc;
+ int ret;
+
+ if (!_ep || !_req)
+ return -EINVAL;
+
+ ep = to_bdc_ep(_ep);
+ req = to_bdc_req(_req);
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s ep:%s req:%p\n", __func__, ep->name, req);
+ bdc_dbg_bd_list(bdc, ep);
+ spin_lock_irqsave(&bdc->lock, flags);
+ /* make sure it's still queued on this endpoint */
+ list_for_each_entry(req, &ep->queue, queue) {
+ if (&req->usb_req == _req)
+ break;
+ }
+ if (&req->usb_req != _req) {
+ spin_unlock_irqrestore(&bdc->lock, flags);
+ dev_err(bdc->dev, "usb_req !=req n");
+ return -EINVAL;
+ }
+ ret = ep_dequeue(ep, req);
+ if (ret) {
+ ret = -EOPNOTSUPP;
+ goto err;
+ }
+ bdc_req_complete(ep, req, -ECONNRESET);
+
+err:
+ bdc_dbg_bd_list(bdc, ep);
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static int bdc_gadget_ep_set_halt(struct usb_ep *_ep, int value)
+{
+ unsigned long flags;
+ struct bdc_ep *ep;
+ struct bdc *bdc;
+ int ret;
+
+ ep = to_bdc_ep(_ep);
+ bdc = ep->bdc;
+ dev_dbg(bdc->dev, "%s ep:%s value=%d\n", __func__, ep->name, value);
+ spin_lock_irqsave(&bdc->lock, flags);
+ if (usb_endpoint_xfer_isoc(ep->usb_ep.desc))
+ ret = -EINVAL;
+ else if (!list_empty(&ep->queue))
+ ret = -EAGAIN;
+ else
+ ret = ep_set_halt(ep, value);
+
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static struct usb_request *bdc_gadget_alloc_request(struct usb_ep *_ep,
+ gfp_t gfp_flags)
+{
+ struct bdc_req *req;
+ struct bdc_ep *ep;
+
+ req = kzalloc(sizeof(*req), gfp_flags);
+ if (!req)
+ return NULL;
+
+ ep = to_bdc_ep(_ep);
+ req->ep = ep;
+ req->epnum = ep->ep_num;
+ req->usb_req.dma = DMA_ADDR_INVALID;
+ dev_dbg(ep->bdc->dev, "%s ep:%s req:%p\n", __func__, ep->name, req);
+
+ return &req->usb_req;
+}
+
+static void bdc_gadget_free_request(struct usb_ep *_ep,
+ struct usb_request *_req)
+{
+ struct bdc_req *req;
+
+ req = to_bdc_req(_req);
+ kfree(req);
+}
+
+/* endpoint operations */
+
+/* configure endpoint and also allocate resources */
+static int bdc_gadget_ep_enable(struct usb_ep *_ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ unsigned long flags;
+ struct bdc_ep *ep;
+ struct bdc *bdc;
+ int ret;
+
+ if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) {
+ pr_debug("bdc_gadget_ep_enable invalid parameters\n");
+ return -EINVAL;
+ }
+
+ if (!desc->wMaxPacketSize) {
+ pr_debug("bdc_gadget_ep_enable missing wMaxPacketSize\n");
+ return -EINVAL;
+ }
+
+ ep = to_bdc_ep(_ep);
+ bdc = ep->bdc;
+
+ /* Sanity check, upper layer will not send enable for ep0 */
+ if (ep == bdc->bdc_ep_array[1])
+ return -EINVAL;
+
+ if (!bdc->gadget_driver
+ || bdc->gadget.speed == USB_SPEED_UNKNOWN) {
+ return -ESHUTDOWN;
+ }
+
+ dev_dbg(bdc->dev, "%s Enabling %s\n", __func__, ep->name);
+ spin_lock_irqsave(&bdc->lock, flags);
+ ep->desc = desc;
+ ep->comp_desc = _ep->comp_desc;
+ ret = bdc_ep_enable(ep);
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static int bdc_gadget_ep_disable(struct usb_ep *_ep)
+{
+ unsigned long flags;
+ struct bdc_ep *ep;
+ struct bdc *bdc;
+ int ret;
+
+ if (!_ep) {
+ pr_debug("bdc: invalid parameters\n");
+ return -EINVAL;
+ }
+ ep = to_bdc_ep(_ep);
+ bdc = ep->bdc;
+
+ /* Upper layer will not call this for ep0, but do a sanity check */
+ if (ep == bdc->bdc_ep_array[1]) {
+ dev_warn(bdc->dev, "%s called for ep0\n", __func__);
+ return -EINVAL;
+ }
+ dev_dbg(bdc->dev,
+ "%s() ep:%s ep->flags:%08x\n",
+ __func__, ep->name, ep->flags);
+
+ if (!(ep->flags & BDC_EP_ENABLED)) {
+ dev_warn(bdc->dev, "%s is already disabled\n", ep->name);
+ return 0;
+ }
+ spin_lock_irqsave(&bdc->lock, flags);
+ ret = bdc_ep_disable(ep);
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static const struct usb_ep_ops bdc_gadget_ep_ops = {
+ .enable = bdc_gadget_ep_enable,
+ .disable = bdc_gadget_ep_disable,
+ .alloc_request = bdc_gadget_alloc_request,
+ .free_request = bdc_gadget_free_request,
+ .queue = bdc_gadget_ep_queue,
+ .dequeue = bdc_gadget_ep_dequeue,
+ .set_halt = bdc_gadget_ep_set_halt
+};
+
+/* dir = 1 is IN */
+static int init_ep(struct bdc *bdc, u32 epnum, u32 dir)
+{
+ struct bdc_ep *ep;
+
+ dev_dbg(bdc->dev, "%s epnum=%d dir=%d\n", __func__, epnum, dir);
+ ep = kzalloc(sizeof(*ep), GFP_KERNEL);
+ if (!ep)
+ return -ENOMEM;
+
+ ep->bdc = bdc;
+ ep->dir = dir;
+
+ /* ep->ep_num is the index inside bdc_ep */
+ if (epnum == 1) {
+ ep->ep_num = 1;
+ bdc->bdc_ep_array[ep->ep_num] = ep;
+ snprintf(ep->name, sizeof(ep->name), "ep%d", epnum - 1);
+ usb_ep_set_maxpacket_limit(&ep->usb_ep, EP0_MAX_PKT_SIZE);
+ ep->comp_desc = NULL;
+ bdc->gadget.ep0 = &ep->usb_ep;
+ } else {
+ if (dir)
+ ep->ep_num = epnum * 2 - 1;
+ else
+ ep->ep_num = epnum * 2 - 2;
+
+ bdc->bdc_ep_array[ep->ep_num] = ep;
+ snprintf(ep->name, sizeof(ep->name), "ep%d%s", epnum - 1,
+ dir & 1 ? "in" : "out");
+
+ usb_ep_set_maxpacket_limit(&ep->usb_ep, 1024);
+ ep->usb_ep.max_streams = 0;
+ list_add_tail(&ep->usb_ep.ep_list, &bdc->gadget.ep_list);
+ }
+ ep->usb_ep.ops = &bdc_gadget_ep_ops;
+ ep->usb_ep.name = ep->name;
+ ep->flags = 0;
+ ep->ignore_next_sr = false;
+ dev_dbg(bdc->dev, "ep=%p ep->usb_ep.name=%s epnum=%d ep->epnum=%d\n",
+ ep, ep->usb_ep.name, epnum, ep->ep_num);
+
+ INIT_LIST_HEAD(&ep->queue);
+
+ return 0;
+}
+
+/* Init all ep */
+int bdc_init_ep(struct bdc *bdc)
+{
+ u8 epnum;
+ int ret;
+
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ INIT_LIST_HEAD(&bdc->gadget.ep_list);
+ /* init ep0 */
+ ret = init_ep(bdc, 1, 0);
+ if (ret) {
+ dev_err(bdc->dev, "init ep ep0 fail %d\n", ret);
+ return ret;
+ }
+
+ for (epnum = 2; epnum <= bdc->num_eps / 2; epnum++) {
+ /* OUT */
+ ret = init_ep(bdc, epnum, 0);
+ if (ret) {
+ dev_err(bdc->dev,
+ "init ep failed for:%d error: %d\n",
+ epnum, ret);
+ return ret;
+ }
+
+ /* IN */
+ ret = init_ep(bdc, epnum, 1);
+ if (ret) {
+ dev_err(bdc->dev,
+ "init ep failed for:%d error: %d\n",
+ epnum, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.h b/drivers/usb/gadget/udc/bdc/bdc_ep.h
new file mode 100644
index 000000000000..8a6b36cbf2ea
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_ep.h
@@ -0,0 +1,22 @@
+/*
+ * bdc_ep.h - header for the BDC debug functions
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#ifndef __LINUX_BDC_EP_H__
+#define __LINUX_BDC_EP_H__
+
+int bdc_init_ep(struct bdc *);
+int bdc_ep_disable(struct bdc_ep *);
+int bdc_ep_enable(struct bdc_ep *);
+void bdc_free_ep(struct bdc *);
+
+#endif /* __LINUX_BDC_EP_H__ */
diff --git a/drivers/usb/gadget/udc/bdc/bdc_pci.c b/drivers/usb/gadget/udc/bdc/bdc_pci.c
new file mode 100644
index 000000000000..02968842b359
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_pci.c
@@ -0,0 +1,132 @@
+/*
+ * bdc_pci.c - BRCM BDC USB3.0 device controller PCI interface file.
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * Based on drivers under drivers/usb/
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/platform_device.h>
+
+#include "bdc.h"
+
+#define BDC_PCI_PID 0x1570
+
+struct bdc_pci {
+ struct device *dev;
+ struct platform_device *bdc;
+};
+
+static int bdc_setup_msi(struct pci_dev *pci)
+{
+ int ret;
+
+ ret = pci_enable_msi(pci);
+ if (ret) {
+ pr_err("failed to allocate MSI entry\n");
+ return ret;
+ }
+
+ return ret;
+}
+
+static int bdc_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
+{
+ struct resource res[2];
+ struct platform_device *bdc;
+ struct bdc_pci *glue;
+ int ret = -ENOMEM;
+
+ glue = devm_kzalloc(&pci->dev, sizeof(*glue), GFP_KERNEL);
+ if (!glue)
+ return -ENOMEM;
+
+ glue->dev = &pci->dev;
+ ret = pci_enable_device(pci);
+ if (ret) {
+ dev_err(&pci->dev, "failed to enable pci device\n");
+ return -ENODEV;
+ }
+ pci_set_master(pci);
+
+ bdc = platform_device_alloc(BRCM_BDC_NAME, PLATFORM_DEVID_AUTO);
+ if (!bdc)
+ return -ENOMEM;
+
+ memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
+ bdc_setup_msi(pci);
+
+ res[0].start = pci_resource_start(pci, 0);
+ res[0].end = pci_resource_end(pci, 0);
+ res[0].name = BRCM_BDC_NAME;
+ res[0].flags = IORESOURCE_MEM;
+
+ res[1].start = pci->irq;
+ res[1].name = BRCM_BDC_NAME;
+ res[1].flags = IORESOURCE_IRQ;
+
+ ret = platform_device_add_resources(bdc, res, ARRAY_SIZE(res));
+ if (ret) {
+ dev_err(&pci->dev,
+ "couldn't add resources to bdc device\n");
+ return ret;
+ }
+
+ pci_set_drvdata(pci, glue);
+
+ dma_set_coherent_mask(&bdc->dev, pci->dev.coherent_dma_mask);
+
+ bdc->dev.dma_mask = pci->dev.dma_mask;
+ bdc->dev.dma_parms = pci->dev.dma_parms;
+ bdc->dev.parent = &pci->dev;
+ glue->bdc = bdc;
+
+ ret = platform_device_add(bdc);
+ if (ret) {
+ dev_err(&pci->dev, "failed to register bdc device\n");
+ platform_device_put(bdc);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void bdc_pci_remove(struct pci_dev *pci)
+{
+ struct bdc_pci *glue = pci_get_drvdata(pci);
+
+ platform_device_unregister(glue->bdc);
+ pci_disable_msi(pci);
+}
+
+static struct pci_device_id bdc_pci_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, BDC_PCI_PID), },
+ {} /* Terminating Entry */
+};
+
+MODULE_DEVICE_TABLE(pci, bdc_pci_id_table);
+
+static struct pci_driver bdc_pci_driver = {
+ .name = "bdc-pci",
+ .id_table = bdc_pci_id_table,
+ .probe = bdc_pci_probe,
+ .remove = bdc_pci_remove,
+};
+
+MODULE_AUTHOR("Ashwini Pahuja <ashwini.linux@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("BRCM BDC USB3 PCI Glue layer");
+module_pci_driver(bdc_pci_driver);
diff --git a/drivers/usb/gadget/udc/bdc/bdc_udc.c b/drivers/usb/gadget/udc/bdc/bdc_udc.c
new file mode 100644
index 000000000000..3700ce70b0be
--- /dev/null
+++ b/drivers/usb/gadget/udc/bdc/bdc_udc.c
@@ -0,0 +1,587 @@
+/*
+ * bdc_udc.c - BRCM BDC USB3.0 device controller gagdet ops
+ *
+ * Copyright (C) 2014 Broadcom Corporation
+ *
+ * Author: Ashwini Pahuja
+ *
+ * Based on drivers under drivers/usb/gadget/udc/
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/otg.h>
+#include <linux/pm.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <asm/unaligned.h>
+#include <linux/platform_device.h>
+
+#include "bdc.h"
+#include "bdc_ep.h"
+#include "bdc_cmd.h"
+#include "bdc_dbg.h"
+
+static const struct usb_gadget_ops bdc_gadget_ops;
+
+static const char * const conn_speed_str[] = {
+ "Not connected",
+ "Full Speed",
+ "Low Speed",
+ "High Speed",
+ "Super Speed",
+};
+
+/* EP0 initial descripror */
+static struct usb_endpoint_descriptor bdc_gadget_ep0_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ .bEndpointAddress = 0,
+ .wMaxPacketSize = cpu_to_le16(EP0_MAX_PKT_SIZE),
+};
+
+/* Advance the srr dqp maintained by SW */
+static void srr_dqp_index_advc(struct bdc *bdc, u32 srr_num)
+{
+ struct srr *srr;
+
+ srr = &bdc->srr;
+ dev_dbg_ratelimited(bdc->dev, "srr->dqp_index:%d\n", srr->dqp_index);
+ srr->dqp_index++;
+ /* rollback to 0 if we are past the last */
+ if (srr->dqp_index == NUM_SR_ENTRIES)
+ srr->dqp_index = 0;
+}
+
+/* connect sr */
+static void bdc_uspc_connected(struct bdc *bdc)
+{
+ u32 speed, temp;
+ u32 usppms;
+ int ret;
+
+ temp = bdc_readl(bdc->regs, BDC_USPC);
+ speed = BDC_PSP(temp);
+ dev_dbg(bdc->dev, "%s speed=%x\n", __func__, speed);
+ switch (speed) {
+ case BDC_SPEED_SS:
+ bdc_gadget_ep0_desc.wMaxPacketSize =
+ cpu_to_le16(EP0_MAX_PKT_SIZE);
+ bdc->gadget.ep0->maxpacket = EP0_MAX_PKT_SIZE;
+ bdc->gadget.speed = USB_SPEED_SUPER;
+ /* Enable U1T in SS mode */
+ usppms = bdc_readl(bdc->regs, BDC_USPPMS);
+ usppms &= ~BDC_U1T(0xff);
+ usppms |= BDC_U1T(U1_TIMEOUT);
+ usppms |= BDC_PORT_W1S;
+ bdc_writel(bdc->regs, BDC_USPPMS, usppms);
+ break;
+
+ case BDC_SPEED_HS:
+ bdc_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64);
+ bdc->gadget.ep0->maxpacket = 64;
+ bdc->gadget.speed = USB_SPEED_HIGH;
+ break;
+
+ case BDC_SPEED_FS:
+ bdc_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(64);
+ bdc->gadget.ep0->maxpacket = 64;
+ bdc->gadget.speed = USB_SPEED_FULL;
+ break;
+
+ case BDC_SPEED_LS:
+ bdc_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(8);
+ bdc->gadget.ep0->maxpacket = 8;
+ bdc->gadget.speed = USB_SPEED_LOW;
+ break;
+ default:
+ dev_err(bdc->dev, "UNDEFINED SPEED\n");
+ return;
+ }
+ dev_dbg(bdc->dev, "connected at %s\n", conn_speed_str[speed]);
+ /* Now we know the speed, configure ep0 */
+ bdc->bdc_ep_array[1]->desc = &bdc_gadget_ep0_desc;
+ ret = bdc_config_ep(bdc, bdc->bdc_ep_array[1]);
+ if (ret)
+ dev_err(bdc->dev, "EP0 config failed\n");
+ bdc->bdc_ep_array[1]->usb_ep.desc = &bdc_gadget_ep0_desc;
+ bdc->bdc_ep_array[1]->flags |= BDC_EP_ENABLED;
+ usb_gadget_set_state(&bdc->gadget, USB_STATE_DEFAULT);
+}
+
+/* device got disconnected */
+static void bdc_uspc_disconnected(struct bdc *bdc, bool reinit)
+{
+ struct bdc_ep *ep;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ /*
+ * Only stop ep0 from here, rest of the endpoints will be disabled
+ * from gadget_disconnect
+ */
+ ep = bdc->bdc_ep_array[1];
+ if (ep && (ep->flags & BDC_EP_ENABLED))
+ /* if enabled then stop and remove requests */
+ bdc_ep_disable(ep);
+
+ if (bdc->gadget_driver && bdc->gadget_driver->disconnect) {
+ spin_unlock(&bdc->lock);
+ bdc->gadget_driver->disconnect(&bdc->gadget);
+ spin_lock(&bdc->lock);
+ }
+ /* Set Unknown speed */
+ bdc->gadget.speed = USB_SPEED_UNKNOWN;
+ bdc->devstatus &= DEVSTATUS_CLEAR;
+ bdc->delayed_status = false;
+ bdc->reinit = reinit;
+ bdc->test_mode = false;
+}
+
+/* TNotify wkaeup timer */
+static void bdc_func_wake_timer(struct work_struct *work)
+{
+ struct bdc *bdc = container_of(work, struct bdc, func_wake_notify.work);
+ unsigned long flags;
+
+ dev_dbg(bdc->dev, "%s\n", __func__);
+ spin_lock_irqsave(&bdc->lock, flags);
+ /*
+ * Check if host has started transferring on endpoints
+ * FUNC_WAKE_ISSUED is cleared when transfer has started after resume
+ */
+ if (bdc->devstatus & FUNC_WAKE_ISSUED) {
+ dev_dbg(bdc->dev, "FUNC_WAKE_ISSUED FLAG IS STILL SET\n");
+ /* flag is still set, so again send func wake */
+ bdc_function_wake_fh(bdc, 0);
+ schedule_delayed_work(&bdc->func_wake_notify,
+ msecs_to_jiffies(BDC_TNOTIFY));
+ }
+ spin_unlock_irqrestore(&bdc->lock, flags);
+}
+
+/* handler for Link state change condition */
+static void handle_link_state_change(struct bdc *bdc, u32 uspc)
+{
+ u32 link_state;
+
+ dev_dbg(bdc->dev, "Link state change");
+ link_state = BDC_PST(uspc);
+ switch (link_state) {
+ case BDC_LINK_STATE_U3:
+ if ((bdc->gadget.speed != USB_SPEED_UNKNOWN) &&
+ bdc->gadget_driver->suspend) {
+ dev_dbg(bdc->dev, "Entered Suspend mode\n");
+ spin_unlock(&bdc->lock);
+ bdc->devstatus |= DEVICE_SUSPENDED;
+ bdc->gadget_driver->suspend(&bdc->gadget);
+ spin_lock(&bdc->lock);
+ }
+ break;
+ case BDC_LINK_STATE_U0:
+ if (bdc->devstatus & REMOTE_WAKEUP_ISSUED) {
+ bdc->devstatus &= ~REMOTE_WAKEUP_ISSUED;
+ if (bdc->gadget.speed == USB_SPEED_SUPER) {
+ bdc_function_wake_fh(bdc, 0);
+ bdc->devstatus |= FUNC_WAKE_ISSUED;
+ /*
+ * Start a Notification timer and check if the
+ * Host transferred anything on any of the EPs,
+ * if not then send function wake again every
+ * TNotification secs until host initiates
+ * transfer to BDC, USB3 spec Table 8.13
+ */
+ schedule_delayed_work(
+ &bdc->func_wake_notify,
+ msecs_to_jiffies(BDC_TNOTIFY));
+ dev_dbg(bdc->dev, "sched func_wake_notify\n");
+ }
+ }
+ break;
+
+ case BDC_LINK_STATE_RESUME:
+ dev_dbg(bdc->dev, "Resumed from Suspend\n");
+ if (bdc->devstatus & DEVICE_SUSPENDED) {
+ bdc->gadget_driver->resume(&bdc->gadget);
+ bdc->devstatus &= ~DEVICE_SUSPENDED;
+ }
+ break;
+ default:
+ dev_dbg(bdc->dev, "link state:%d\n", link_state);
+ }
+}
+
+/* something changes on upstream port, handle it here */
+void bdc_sr_uspc(struct bdc *bdc, struct bdc_sr *sreport)
+{
+ u32 clear_flags = 0;
+ u32 uspc;
+ bool connected = false;
+ bool disconn = false;
+
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ dev_dbg(bdc->dev, "%s uspc=0x%08x\n", __func__, uspc);
+
+ /* Port connect changed */
+ if (uspc & BDC_PCC) {
+ /* Vbus not present, and not connected to Downstream port */
+ if ((uspc & BDC_VBC) && !(uspc & BDC_VBS) && !(uspc & BDC_PCS))
+ disconn = true;
+ else if ((uspc & BDC_PCS) && !BDC_PST(uspc))
+ connected = true;
+ }
+
+ /* Change in VBus and VBus is present */
+ if ((uspc & BDC_VBC) && (uspc & BDC_VBS)) {
+ if (bdc->pullup) {
+ dev_dbg(bdc->dev, "Do a softconnect\n");
+ /* Attached state, do a softconnect */
+ bdc_softconn(bdc);
+ usb_gadget_set_state(&bdc->gadget, USB_STATE_POWERED);
+ }
+ clear_flags = BDC_VBC;
+ } else if ((uspc & BDC_PRS) || (uspc & BDC_PRC) || disconn) {
+ /* Hot reset, warm reset, 2.0 bus reset or disconn */
+ dev_dbg(bdc->dev, "Port reset or disconn\n");
+ bdc_uspc_disconnected(bdc, disconn);
+ clear_flags = BDC_PCC|BDC_PCS|BDC_PRS|BDC_PRC;
+ } else if ((uspc & BDC_PSC) && (uspc & BDC_PCS)) {
+ /* Change in Link state */
+ handle_link_state_change(bdc, uspc);
+ clear_flags = BDC_PSC|BDC_PCS;
+ }
+
+ /*
+ * In SS we might not have PRC bit set before connection, but in 2.0
+ * the PRC bit is set before connection, so moving this condition out
+ * of bus reset to handle both SS/2.0 speeds.
+ */
+ if (connected) {
+ /* This is the connect event for U0/L0 */
+ dev_dbg(bdc->dev, "Connected\n");
+ bdc_uspc_connected(bdc);
+ bdc->devstatus &= ~(DEVICE_SUSPENDED);
+ }
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ uspc &= (~BDC_USPSC_RW);
+ dev_dbg(bdc->dev, "uspc=%x\n", uspc);
+ bdc_writel(bdc->regs, BDC_USPC, clear_flags);
+}
+
+/* Main interrupt handler for bdc */
+static irqreturn_t bdc_udc_interrupt(int irq, void *_bdc)
+{
+ u32 eqp_index, dqp_index, sr_type, srr_int;
+ struct bdc_sr *sreport;
+ struct bdc *bdc = _bdc;
+ u32 status;
+ int ret;
+
+ spin_lock(&bdc->lock);
+ status = bdc_readl(bdc->regs, BDC_BDCSC);
+ if (!(status & BDC_GIP)) {
+ spin_unlock(&bdc->lock);
+ return IRQ_NONE;
+ }
+ srr_int = bdc_readl(bdc->regs, BDC_SRRINT(0));
+ /* Check if the SRR IP bit it set? */
+ if (!(srr_int & BDC_SRR_IP)) {
+ dev_warn(bdc->dev, "Global irq pending but SRR IP is 0\n");
+ spin_unlock(&bdc->lock);
+ return IRQ_NONE;
+ }
+ eqp_index = BDC_SRR_EPI(srr_int);
+ dqp_index = BDC_SRR_DPI(srr_int);
+ dev_dbg(bdc->dev,
+ "%s eqp_index=%d dqp_index=%d srr.dqp_index=%d\n\n",
+ __func__, eqp_index, dqp_index, bdc->srr.dqp_index);
+
+ /* check for ring empty condition */
+ if (eqp_index == dqp_index) {
+ dev_dbg(bdc->dev, "SRR empty?\n");
+ spin_unlock(&bdc->lock);
+ return IRQ_HANDLED;
+ }
+
+ while (bdc->srr.dqp_index != eqp_index) {
+ sreport = &bdc->srr.sr_bds[bdc->srr.dqp_index];
+ /* sreport is read before using it */
+ rmb();
+ sr_type = le32_to_cpu(sreport->offset[3]) & BD_TYPE_BITMASK;
+ dev_dbg_ratelimited(bdc->dev, "sr_type=%d\n", sr_type);
+ switch (sr_type) {
+ case SR_XSF:
+ bdc->sr_handler[0](bdc, sreport);
+ break;
+
+ case SR_USPC:
+ bdc->sr_handler[1](bdc, sreport);
+ break;
+ default:
+ dev_warn(bdc->dev, "SR:%d not handled\n", sr_type);
+ }
+ /* Advance the srr dqp index */
+ srr_dqp_index_advc(bdc, 0);
+ }
+ /* update the hw dequeue pointer */
+ srr_int = bdc_readl(bdc->regs, BDC_SRRINT(0));
+ srr_int &= ~BDC_SRR_DPI_MASK;
+ srr_int &= ~(BDC_SRR_RWS|BDC_SRR_RST|BDC_SRR_ISR);
+ srr_int |= ((bdc->srr.dqp_index) << 16);
+ srr_int |= BDC_SRR_IP;
+ bdc_writel(bdc->regs, BDC_SRRINT(0), srr_int);
+ srr_int = bdc_readl(bdc->regs, BDC_SRRINT(0));
+ if (bdc->reinit) {
+ ret = bdc_reinit(bdc);
+ if (ret)
+ dev_err(bdc->dev, "err in bdc reinit\n");
+ }
+
+ spin_unlock(&bdc->lock);
+
+ return IRQ_HANDLED;
+}
+
+/* Gadget ops */
+static int bdc_udc_start(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver)
+{
+ struct bdc *bdc = gadget_to_bdc(gadget);
+ unsigned long flags;
+ int ret = 0;
+
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ spin_lock_irqsave(&bdc->lock, flags);
+ if (bdc->gadget_driver) {
+ dev_err(bdc->dev, "%s is already bound to %s\n",
+ bdc->gadget.name,
+ bdc->gadget_driver->driver.name);
+ ret = -EBUSY;
+ goto err;
+ }
+ /*
+ * Run the controller from here and when BDC is connected to
+ * Host then driver will receive a USPC SR with VBUS present
+ * and then driver will do a softconnect.
+ */
+ ret = bdc_run(bdc);
+ if (ret) {
+ dev_err(bdc->dev, "%s bdc run fail\n", __func__);
+ goto err;
+ }
+ bdc->gadget_driver = driver;
+ bdc->gadget.dev.driver = &driver->driver;
+err:
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static int bdc_udc_stop(struct usb_gadget *gadget)
+{
+ struct bdc *bdc = gadget_to_bdc(gadget);
+ unsigned long flags;
+
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ spin_lock_irqsave(&bdc->lock, flags);
+ bdc_stop(bdc);
+ bdc->gadget_driver = NULL;
+ bdc->gadget.dev.driver = NULL;
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return 0;
+}
+
+static int bdc_udc_pullup(struct usb_gadget *gadget, int is_on)
+{
+ struct bdc *bdc = gadget_to_bdc(gadget);
+ unsigned long flags;
+ u32 uspc;
+
+ dev_dbg(bdc->dev, "%s() is_on:%d\n", __func__, is_on);
+ if (!gadget)
+ return -EINVAL;
+
+ spin_lock_irqsave(&bdc->lock, flags);
+ if (!is_on) {
+ bdc_softdisconn(bdc);
+ bdc->pullup = false;
+ } else {
+ /*
+ * For a self powered device, we need to wait till we receive
+ * a VBUS change and Vbus present event, then if pullup flag
+ * is set, then only we present the Termintation.
+ */
+ bdc->pullup = true;
+ /*
+ * Check if BDC is already connected to Host i.e Vbus=1,
+ * if yes, then present TERM now, this is typical for bus
+ * powered devices.
+ */
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ if (uspc & BDC_VBS)
+ bdc_softconn(bdc);
+ }
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return 0;
+}
+
+static int bdc_udc_set_selfpowered(struct usb_gadget *gadget,
+ int is_self)
+{
+ struct bdc *bdc = gadget_to_bdc(gadget);
+ unsigned long flags;
+
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ spin_lock_irqsave(&bdc->lock, flags);
+ if (!is_self)
+ bdc->devstatus |= 1 << USB_DEVICE_SELF_POWERED;
+ else
+ bdc->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED);
+
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return 0;
+}
+
+static int bdc_udc_wakeup(struct usb_gadget *gadget)
+{
+ struct bdc *bdc = gadget_to_bdc(gadget);
+ unsigned long flags;
+ u8 link_state;
+ u32 uspc;
+ int ret = 0;
+
+ dev_dbg(bdc->dev,
+ "%s() bdc->devstatus=%08x\n",
+ __func__, bdc->devstatus);
+
+ if (!(bdc->devstatus & REMOTE_WAKE_ENABLE))
+ return -EOPNOTSUPP;
+
+ spin_lock_irqsave(&bdc->lock, flags);
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ link_state = BDC_PST(uspc);
+ dev_dbg(bdc->dev, "link_state =%d portsc=%x", link_state, uspc);
+ if (link_state != BDC_LINK_STATE_U3) {
+ dev_warn(bdc->dev,
+ "can't wakeup from link state %d\n",
+ link_state);
+ ret = -EINVAL;
+ goto out;
+ }
+ if (bdc->gadget.speed == USB_SPEED_SUPER)
+ bdc->devstatus |= REMOTE_WAKEUP_ISSUED;
+
+ uspc &= ~BDC_PST_MASK;
+ uspc &= (~BDC_USPSC_RW);
+ uspc |= BDC_PST(BDC_LINK_STATE_U0);
+ uspc |= BDC_SWS;
+ bdc_writel(bdc->regs, BDC_USPC, uspc);
+ uspc = bdc_readl(bdc->regs, BDC_USPC);
+ link_state = BDC_PST(uspc);
+ dev_dbg(bdc->dev, "link_state =%d portsc=%x", link_state, uspc);
+out:
+ spin_unlock_irqrestore(&bdc->lock, flags);
+
+ return ret;
+}
+
+static const struct usb_gadget_ops bdc_gadget_ops = {
+ .wakeup = bdc_udc_wakeup,
+ .set_selfpowered = bdc_udc_set_selfpowered,
+ .pullup = bdc_udc_pullup,
+ .udc_start = bdc_udc_start,
+ .udc_stop = bdc_udc_stop,
+};
+
+/* Init the gadget interface and register the udc */
+int bdc_udc_init(struct bdc *bdc)
+{
+ u32 temp;
+ int ret;
+
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ bdc->gadget.ops = &bdc_gadget_ops;
+ bdc->gadget.max_speed = USB_SPEED_SUPER;
+ bdc->gadget.speed = USB_SPEED_UNKNOWN;
+ bdc->gadget.dev.parent = bdc->dev;
+
+ bdc->gadget.sg_supported = false;
+
+
+ bdc->gadget.name = BRCM_BDC_NAME;
+ ret = devm_request_irq(bdc->dev, bdc->irq, bdc_udc_interrupt,
+ IRQF_SHARED , BRCM_BDC_NAME, bdc);
+ if (ret) {
+ dev_err(bdc->dev,
+ "failed to request irq #%d %d\n",
+ bdc->irq, ret);
+ return ret;
+ }
+
+ ret = bdc_init_ep(bdc);
+ if (ret) {
+ dev_err(bdc->dev, "bdc init ep fail: %d\n", ret);
+ return ret;
+ }
+
+ ret = usb_add_gadget_udc(bdc->dev, &bdc->gadget);
+ if (ret) {
+ dev_err(bdc->dev, "failed to register udc\n");
+ goto err0;
+ }
+ usb_gadget_set_state(&bdc->gadget, USB_STATE_NOTATTACHED);
+ bdc->bdc_ep_array[1]->desc = &bdc_gadget_ep0_desc;
+ /*
+ * Allocate bd list for ep0 only, ep0 will be enabled on connect
+ * status report when the speed is known
+ */
+ ret = bdc_ep_enable(bdc->bdc_ep_array[1]);
+ if (ret) {
+ dev_err(bdc->dev, "fail to enable %s\n",
+ bdc->bdc_ep_array[1]->name);
+ goto err1;
+ }
+ INIT_DELAYED_WORK(&bdc->func_wake_notify, bdc_func_wake_timer);
+ /* Enable Interrupts */
+ temp = bdc_readl(bdc->regs, BDC_BDCSC);
+ temp |= BDC_GIE;
+ bdc_writel(bdc->regs, BDC_BDCSC, temp);
+ return 0;
+err1:
+ usb_del_gadget_udc(&bdc->gadget);
+err0:
+ bdc_free_ep(bdc);
+
+ return ret;
+}
+
+void bdc_udc_exit(struct bdc *bdc)
+{
+ dev_dbg(bdc->dev, "%s()\n", __func__);
+ bdc_ep_disable(bdc->bdc_ep_array[1]);
+ usb_del_gadget_udc(&bdc->gadget);
+ bdc_free_ep(bdc);
+}
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index 81dc5959e36b..1c69c760408e 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -367,19 +367,22 @@ static void set_link_state(struct dummy_hcd *dum_hcd)
dum_hcd->active)
dum_hcd->resuming = 0;
- /* if !connected or reset */
+ /* Currently !connected or in reset */
if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 ||
(dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) {
- /*
- * We're connected and not reset (reset occurred now),
- * and driver attached - disconnect!
- */
- if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 &&
- (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 &&
- dum->driver) {
+ unsigned disconnect = USB_PORT_STAT_CONNECTION &
+ dum_hcd->old_status & (~dum_hcd->port_status);
+ unsigned reset = USB_PORT_STAT_RESET &
+ (~dum_hcd->old_status) & dum_hcd->port_status;
+
+ /* Report reset and disconnect events to the driver */
+ if (dum->driver && (disconnect || reset)) {
stop_activity(dum);
spin_unlock(&dum->lock);
- dum->driver->disconnect(&dum->gadget);
+ if (reset)
+ usb_gadget_udc_reset(&dum->gadget, dum->driver);
+ else
+ dum->driver->disconnect(&dum->gadget);
spin_lock(&dum->lock);
}
} else if (dum_hcd->active != dum_hcd->old_active) {
@@ -851,8 +854,7 @@ static int dummy_pullup(struct usb_gadget *_gadget, int value)
static int dummy_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int dummy_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int dummy_udc_stop(struct usb_gadget *g);
static const struct usb_gadget_ops dummy_ops = {
.get_frame = dummy_g_get_frame,
@@ -908,23 +910,16 @@ static int dummy_udc_start(struct usb_gadget *g,
*/
dum->devstatus = 0;
-
dum->driver = driver;
- dev_dbg(udc_dev(dum), "binding gadget driver '%s'\n",
- driver->driver.name);
+
return 0;
}
-static int dummy_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int dummy_udc_stop(struct usb_gadget *g)
{
struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g);
struct dummy *dum = dum_hcd->dum;
- if (driver)
- dev_dbg(udc_dev(dum), "unregister gadget driver '%s'\n",
- driver->driver.name);
-
dum->driver = NULL;
return 0;
@@ -2370,7 +2365,6 @@ static void dummy_stop(struct usb_hcd *hcd)
dum = hcd_to_dummy_hcd(hcd)->dum;
device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs);
- usb_gadget_unregister_driver(dum->driver);
dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n");
}
diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 1d315921bf34..1ca52e11eb98 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -1053,8 +1053,7 @@ static void fotg210_init(struct fotg210_udc *fotg210)
iowrite32(value, fotg210->reg + FOTG210_DMISGR0);
}
-static int fotg210_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int fotg210_udc_stop(struct usb_gadget *g)
{
struct fotg210_udc *fotg210 = gadget_to_fotg210(g);
unsigned long flags;
diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c
index dd18ea38e391..d201f9a89ce3 100644
--- a/drivers/usb/gadget/udc/fsl_qe_udc.c
+++ b/drivers/usb/gadget/udc/fsl_qe_udc.c
@@ -1887,8 +1887,7 @@ static int qe_get_frame(struct usb_gadget *gadget)
static int fsl_qe_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
-static int fsl_qe_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver);
+static int fsl_qe_stop(struct usb_gadget *gadget);
/* defined in usb_gadget.h */
static const struct usb_gadget_ops qe_gadget_ops = {
@@ -1918,7 +1917,7 @@ static int reset_queues(struct qe_udc *udc)
/* report disconnect; the driver is already quiesced */
spin_unlock(&udc->lock);
- udc->driver->disconnect(&udc->gadget);
+ usb_gadget_udc_reset(&udc->gadget, udc->driver);
spin_lock(&udc->lock);
return 0;
@@ -2305,13 +2304,10 @@ static int fsl_qe_start(struct usb_gadget *gadget,
udc->ep0_dir = USB_DIR_OUT;
spin_unlock_irqrestore(&udc->lock, flags);
- dev_info(udc->dev, "%s bind to driver %s\n", udc->gadget.name,
- driver->driver.name);
return 0;
}
-static int fsl_qe_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int fsl_qe_stop(struct usb_gadget *gadget)
{
struct qe_udc *udc;
struct qe_ep *loop_ep;
@@ -2336,8 +2332,6 @@ static int fsl_qe_stop(struct usb_gadget *gadget,
udc->driver = NULL;
- dev_info(udc->dev, "unregistered gadget driver '%s'\r\n",
- driver->driver.name);
return 0;
}
@@ -2538,7 +2532,6 @@ static int qe_udc_probe(struct platform_device *ofdev)
/* create a buf for ZLP send, need to remain zeroed */
udc->nullbuf = devm_kzalloc(&ofdev->dev, 256, GFP_KERNEL);
if (udc->nullbuf == NULL) {
- dev_err(udc->dev, "cannot alloc nullbuf\n");
ret = -ENOMEM;
goto err3;
}
diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c
index c3620791a315..f340181da23c 100644
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -1236,9 +1236,8 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on)
static int fsl_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int fsl_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
-/* defined in gadget.h */
+static int fsl_udc_stop(struct usb_gadget *g);
+
static const struct usb_gadget_ops fsl_gadget_ops = {
.get_frame = fsl_get_frame,
.wakeup = fsl_wakeup,
@@ -1772,7 +1771,7 @@ static void bus_resume(struct fsl_udc *udc)
}
/* Clear up all ep queues */
-static int reset_queues(struct fsl_udc *udc)
+static int reset_queues(struct fsl_udc *udc, bool bus_reset)
{
u8 pipe;
@@ -1781,7 +1780,10 @@ static int reset_queues(struct fsl_udc *udc)
/* report disconnect; the driver is already quiesced */
spin_unlock(&udc->lock);
- udc->driver->disconnect(&udc->gadget);
+ if (bus_reset)
+ usb_gadget_udc_reset(&udc->gadget, udc->driver);
+ else
+ udc->driver->disconnect(&udc->gadget);
spin_lock(&udc->lock);
return 0;
@@ -1835,7 +1837,7 @@ static void reset_irq(struct fsl_udc *udc)
udc->bus_reset = 1;
/* Reset all the queues, include XD, dTD, EP queue
* head and TR Queue */
- reset_queues(udc);
+ reset_queues(udc, true);
udc->usb_state = USB_STATE_DEFAULT;
} else {
VDBG("Controller reset");
@@ -1844,7 +1846,7 @@ static void reset_irq(struct fsl_udc *udc)
dr_controller_setup(udc);
/* Reset all internal used Queues */
- reset_queues(udc);
+ reset_queues(udc, false);
ep0_setup(udc);
@@ -1975,8 +1977,7 @@ static int fsl_udc_start(struct usb_gadget *g,
}
/* Disconnect from gadget driver */
-static int fsl_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int fsl_udc_stop(struct usb_gadget *g)
{
struct fsl_ep *loop_ep;
unsigned long flags;
diff --git a/drivers/usb/gadget/udc/fusb300_udc.c b/drivers/usb/gadget/udc/fusb300_udc.c
index 8286df72add4..a1b33f534b52 100644
--- a/drivers/usb/gadget/udc/fusb300_udc.c
+++ b/drivers/usb/gadget/udc/fusb300_udc.c
@@ -1320,8 +1320,7 @@ static int fusb300_udc_start(struct usb_gadget *g,
return 0;
}
-static int fusb300_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int fusb300_udc_stop(struct usb_gadget *g)
{
struct fusb300 *fusb300 = to_fusb300(g);
diff --git a/drivers/usb/gadget/udc/goku_udc.c b/drivers/usb/gadget/udc/goku_udc.c
index bf9c5ef8b56b..5b9176e7202a 100644
--- a/drivers/usb/gadget/udc/goku_udc.c
+++ b/drivers/usb/gadget/udc/goku_udc.c
@@ -992,8 +992,7 @@ static int goku_get_frame(struct usb_gadget *_gadget)
static int goku_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int goku_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int goku_udc_stop(struct usb_gadget *g);
static const struct usb_gadget_ops goku_ops = {
.get_frame = goku_get_frame,
@@ -1364,8 +1363,7 @@ static void stop_activity(struct goku_udc *dev)
udc_enable(dev);
}
-static int goku_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int goku_udc_stop(struct usb_gadget *g)
{
struct goku_udc *dev = to_goku_udc(g);
unsigned long flags;
diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c
index 1b3048a6a2a3..320df9a250ff 100644
--- a/drivers/usb/gadget/udc/gr_udc.c
+++ b/drivers/usb/gadget/udc/gr_udc.c
@@ -1932,14 +1932,10 @@ static int gr_udc_start(struct usb_gadget *gadget,
spin_unlock(&dev->lock);
- dev_info(dev->dev, "Started with gadget driver '%s'\n",
- driver->driver.name);
-
return 0;
}
-static int gr_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int gr_udc_stop(struct usb_gadget *gadget)
{
struct gr_udc *dev = to_gr_udc(gadget);
unsigned long flags;
@@ -1951,8 +1947,6 @@ static int gr_udc_stop(struct usb_gadget *gadget,
spin_unlock_irqrestore(&dev->lock, flags);
- dev_info(dev->dev, "Stopped\n");
-
return 0;
}
diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c
index feab0bac8fdc..976529631c19 100644
--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@@ -582,8 +582,7 @@ static void create_debug_file(struct lpc32xx_udc *udc)
static void remove_debug_file(struct lpc32xx_udc *udc)
{
- if (udc->pde)
- debugfs_remove(udc->pde);
+ debugfs_remove(udc->pde);
}
#else
@@ -2559,7 +2558,7 @@ static int lpc32xx_pullup(struct usb_gadget *gadget, int is_on)
}
static int lpc32xx_start(struct usb_gadget *, struct usb_gadget_driver *);
-static int lpc32xx_stop(struct usb_gadget *, struct usb_gadget_driver *);
+static int lpc32xx_stop(struct usb_gadget *);
static const struct usb_gadget_ops lpc32xx_udc_ops = {
.get_frame = lpc32xx_get_frame,
@@ -2961,15 +2960,11 @@ static int lpc32xx_start(struct usb_gadget *gadget,
return 0;
}
-static int lpc32xx_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int lpc32xx_stop(struct usb_gadget *gadget)
{
int i;
struct lpc32xx_udc *udc = to_udc(gadget);
- if (!driver || driver != udc->driver)
- return -EINVAL;
-
for (i = IRQ_USB_LP; i <= IRQ_USB_ATX; i++)
disable_irq(udc->udp_irq[i]);
diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c
index 898565687a8c..ef3f73dd9099 100644
--- a/drivers/usb/gadget/udc/m66592-udc.c
+++ b/drivers/usb/gadget/udc/m66592-udc.c
@@ -1142,7 +1142,7 @@ static void irq_device_state(struct m66592 *m66592)
m66592_write(m66592, ~M66592_DVST, M66592_INTSTS0);
if (dvsq == M66592_DS_DFLT) { /* bus reset */
- m66592->driver->disconnect(&m66592->gadget);
+ usb_gadget_udc_reset(&m66592->gadget, m66592->driver);
m66592_update_usb_speed(m66592);
}
if (m66592->old_dvsq == M66592_DS_CNFG && dvsq != M66592_DS_CNFG)
@@ -1485,8 +1485,7 @@ static int m66592_udc_start(struct usb_gadget *g,
return 0;
}
-static int m66592_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int m66592_udc_stop(struct usb_gadget *g)
{
struct m66592 *m66592 = to_m66592(g);
diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c
index 046a1f808b0d..ea422ac79990 100644
--- a/drivers/usb/gadget/udc/mv_u3d_core.c
+++ b/drivers/usb/gadget/udc/mv_u3d_core.c
@@ -1266,8 +1266,7 @@ static int mv_u3d_start(struct usb_gadget *g,
return 0;
}
-static int mv_u3d_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int mv_u3d_stop(struct usb_gadget *g)
{
struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget);
struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev);
@@ -1284,7 +1283,7 @@ static int mv_u3d_stop(struct usb_gadget *g,
mv_u3d_controller_stop(u3d);
/* stop all usb activities */
u3d->gadget.speed = USB_SPEED_UNKNOWN;
- mv_u3d_stop_activity(u3d, driver);
+ mv_u3d_stop_activity(u3d, NULL);
mv_u3d_disable(u3d);
if (pdata->phy_deinit)
diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
index 3c5db80ae325..d4edd763e963 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -1223,7 +1223,7 @@ static int mv_udc_pullup(struct usb_gadget *gadget, int is_on)
}
static int mv_udc_start(struct usb_gadget *, struct usb_gadget_driver *);
-static int mv_udc_stop(struct usb_gadget *, struct usb_gadget_driver *);
+static int mv_udc_stop(struct usb_gadget *);
/* device controller usb_gadget_ops structure */
static const struct usb_gadget_ops mv_ops = {
@@ -1307,6 +1307,23 @@ static void nuke(struct mv_ep *ep, int status)
}
}
+static void gadget_reset(struct mv_udc *udc, struct usb_gadget_driver *driver)
+{
+ struct mv_ep *ep;
+
+ nuke(&udc->eps[0], -ESHUTDOWN);
+
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
+ nuke(ep, -ESHUTDOWN);
+ }
+
+ /* report reset; the driver is already quiesced */
+ if (driver) {
+ spin_unlock(&udc->lock);
+ usb_gadget_udc_reset(&udc->gadget, driver);
+ spin_lock(&udc->lock);
+ }
+}
/* stop all USB activities */
static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver)
{
@@ -1371,8 +1388,7 @@ static int mv_udc_start(struct usb_gadget *gadget,
return 0;
}
-static int mv_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int mv_udc_stop(struct usb_gadget *gadget)
{
struct mv_udc *udc;
unsigned long flags;
@@ -1386,7 +1402,7 @@ static int mv_udc_stop(struct usb_gadget *gadget,
/* stop all usb activities */
udc->gadget.speed = USB_SPEED_UNKNOWN;
- stop_activity(udc, driver);
+ stop_activity(udc, NULL);
mv_udc_disable(udc);
spin_unlock_irqrestore(&udc->lock, flags);
@@ -1882,7 +1898,7 @@ static void irq_process_reset(struct mv_udc *udc)
dev_info(&udc->dev->dev, "usb bus reset\n");
udc->usb_state = USB_STATE_DEFAULT;
/* reset all the queues, stop all USB activities */
- stop_activity(udc, udc->driver);
+ gadget_reset(udc, udc->driver);
} else {
dev_info(&udc->dev->dev, "USB reset portsc 0x%x\n",
readl(&udc->op_regs->portsc));
@@ -2107,10 +2123,8 @@ static int mv_udc_probe(struct platform_device *pdev)
}
udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL);
- if (udc == NULL) {
- dev_err(&pdev->dev, "failed to allocate memory for udc\n");
+ if (udc == NULL)
return -ENOMEM;
- }
udc->done = &release_done;
udc->pdata = dev_get_platdata(&pdev->dev);
@@ -2207,7 +2221,6 @@ static int mv_udc_probe(struct platform_device *pdev)
size = udc->max_eps * sizeof(struct mv_ep) *2;
udc->eps = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
if (udc->eps == NULL) {
- dev_err(&pdev->dev, "allocate ep memory failed\n");
retval = -ENOMEM;
goto err_destroy_dma;
}
@@ -2216,7 +2229,6 @@ static int mv_udc_probe(struct platform_device *pdev)
udc->status_req = devm_kzalloc(&pdev->dev, sizeof(struct mv_req),
GFP_KERNEL);
if (!udc->status_req) {
- dev_err(&pdev->dev, "allocate status_req memory failed\n");
retval = -ENOMEM;
goto err_destroy_dma;
}
diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c
index 84d7162a8022..3a90856625f2 100644
--- a/drivers/usb/gadget/udc/net2272.c
+++ b/drivers/usb/gadget/udc/net2272.c
@@ -1169,8 +1169,7 @@ net2272_pullup(struct usb_gadget *_gadget, int is_on)
static int net2272_start(struct usb_gadget *_gadget,
struct usb_gadget_driver *driver);
-static int net2272_stop(struct usb_gadget *_gadget,
- struct usb_gadget_driver *driver);
+static int net2272_stop(struct usb_gadget *_gadget);
static const struct usb_gadget_ops net2272_ops = {
.get_frame = net2272_get_frame,
@@ -1471,8 +1470,6 @@ static int net2272_start(struct usb_gadget *_gadget,
*/
net2272_ep0_start(dev);
- dev_dbg(dev->dev, "%s ready\n", driver->driver.name);
-
return 0;
}
@@ -1502,8 +1499,7 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
net2272_usb_reinit(dev);
}
-static int net2272_stop(struct usb_gadget *_gadget,
- struct usb_gadget_driver *driver)
+static int net2272_stop(struct usb_gadget *_gadget)
{
struct net2272 *dev;
unsigned long flags;
@@ -1511,12 +1507,11 @@ static int net2272_stop(struct usb_gadget *_gadget,
dev = container_of(_gadget, struct net2272, gadget);
spin_lock_irqsave(&dev->lock, flags);
- stop_activity(dev, driver);
+ stop_activity(dev, NULL);
spin_unlock_irqrestore(&dev->lock, flags);
dev->driver = NULL;
- dev_dbg(dev->dev, "unregistered driver '%s'\n", driver->driver.name);
return 0;
}
@@ -1987,17 +1982,42 @@ net2272_handle_stat1_irqs(struct net2272 *dev, u8 stat)
mask = (1 << USB_HIGH_SPEED) | (1 << USB_FULL_SPEED);
if (stat & tmp) {
+ bool reset = false;
+ bool disconnect = false;
+
+ /*
+ * Ignore disconnects and resets if the speed hasn't been set.
+ * VBUS can bounce and there's always an initial reset.
+ */
net2272_write(dev, IRQSTAT1, tmp);
- if ((((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) &&
- ((net2272_read(dev, USBCTL1) & mask) == 0))
- || ((net2272_read(dev, USBCTL1) & (1 << VBUS_PIN))
- == 0))
- && (dev->gadget.speed != USB_SPEED_UNKNOWN)) {
- dev_dbg(dev->dev, "disconnect %s\n",
- dev->driver->driver.name);
- stop_activity(dev, dev->driver);
- net2272_ep0_start(dev);
- return;
+ if (dev->gadget.speed != USB_SPEED_UNKNOWN) {
+ if ((stat & (1 << VBUS_INTERRUPT)) &&
+ (net2272_read(dev, USBCTL1) &
+ (1 << VBUS_PIN)) == 0) {
+ disconnect = true;
+ dev_dbg(dev->dev, "disconnect %s\n",
+ dev->driver->driver.name);
+ } else if ((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) &&
+ (net2272_read(dev, USBCTL1) & mask)
+ == 0) {
+ reset = true;
+ dev_dbg(dev->dev, "reset %s\n",
+ dev->driver->driver.name);
+ }
+
+ if (disconnect || reset) {
+ stop_activity(dev, dev->driver);
+ net2272_ep0_start(dev);
+ spin_unlock(&dev->lock);
+ if (reset)
+ usb_gadget_udc_reset
+ (&dev->gadget, dev->driver);
+ else
+ (dev->driver->disconnect)
+ (&dev->gadget);
+ spin_lock(&dev->lock);
+ return;
+ }
}
stat &= ~tmp;
@@ -2200,18 +2220,8 @@ static void
net2272_remove(struct net2272 *dev)
{
usb_del_gadget_udc(&dev->gadget);
-
- /* start with the driver above us */
- if (dev->driver) {
- /* should have been done already by driver model core */
- dev_warn(dev->dev, "pci remove, driver '%s' is still registered\n",
- dev->driver->driver.name);
- usb_gadget_unregister_driver(dev->driver);
- }
-
free_irq(dev->irq, dev);
iounmap(dev->base_addr);
-
device_remove_file(dev->dev, &dev_attr_registers);
dev_info(dev->dev, "unbind\n");
diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
index 8d13337e2dde..d6411e0a8e03 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -1118,10 +1118,10 @@ static void scan_dma_completions(struct net2280_ep *ep)
break;
} else if (!ep->is_in &&
(req->req.length % ep->ep.maxpacket) != 0) {
- tmp = readl(&ep->regs->ep_stat);
if (ep->dev->quirks & PLX_SUPERSPEED)
return dma_done(ep, req, tmp, 0);
+ tmp = readl(&ep->regs->ep_stat);
/* AVOID TROUBLE HERE by not issuing short reads from
* your gadget driver. That helps avoids errata 0121,
* 0122, and 0124; not all cases trigger the warning.
@@ -1548,8 +1548,7 @@ static int net2280_pullup(struct usb_gadget *_gadget, int is_on)
static int net2280_start(struct usb_gadget *_gadget,
struct usb_gadget_driver *driver);
-static int net2280_stop(struct usb_gadget *_gadget,
- struct usb_gadget_driver *driver);
+static int net2280_stop(struct usb_gadget *_gadget);
static const struct usb_gadget_ops net2280_ops = {
.get_frame = net2280_get_frame,
@@ -2397,11 +2396,6 @@ static int net2280_start(struct usb_gadget *_gadget,
ep0_start(dev);
- ep_dbg(dev, "%s ready, usbctl %08x stdrsp %08x\n",
- driver->driver.name,
- readl(&dev->usb->usbctl),
- readl(&dev->usb->stdrsp));
-
/* pci writes may still be posted */
return 0;
@@ -2437,8 +2431,7 @@ static void stop_activity(struct net2280 *dev, struct usb_gadget_driver *driver)
usb_reinit(dev);
}
-static int net2280_stop(struct usb_gadget *_gadget,
- struct usb_gadget_driver *driver)
+static int net2280_stop(struct usb_gadget *_gadget)
{
struct net2280 *dev;
unsigned long flags;
@@ -2446,11 +2439,9 @@ static int net2280_stop(struct usb_gadget *_gadget,
dev = container_of(_gadget, struct net2280, gadget);
spin_lock_irqsave(&dev->lock, flags);
- stop_activity(dev, driver);
+ stop_activity(dev, NULL);
spin_unlock_irqrestore(&dev->lock, flags);
- dev->driver = NULL;
-
net2280_led_active(dev, 0);
/* Disable full-speed test mode */
@@ -2460,8 +2451,7 @@ static int net2280_stop(struct usb_gadget *_gadget,
device_remove_file(&dev->pdev->dev, &dev_attr_function);
device_remove_file(&dev->pdev->dev, &dev_attr_queues);
- ep_dbg(dev, "unregistered driver '%s'\n",
- driver ? driver->driver.name : "");
+ dev->driver = NULL;
return 0;
}
@@ -3318,17 +3308,42 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
* only indicates a change in the reset state).
*/
if (stat & tmp) {
+ bool reset = false;
+ bool disconnect = false;
+
+ /*
+ * Ignore disconnects and resets if the speed hasn't been set.
+ * VBUS can bounce and there's always an initial reset.
+ */
writel(tmp, &dev->regs->irqstat1);
- if ((((stat & BIT(ROOT_PORT_RESET_INTERRUPT)) &&
- ((readl(&dev->usb->usbstat) & mask) == 0)) ||
- ((readl(&dev->usb->usbctl) &
- BIT(VBUS_PIN)) == 0)) &&
- (dev->gadget.speed != USB_SPEED_UNKNOWN)) {
- ep_dbg(dev, "disconnect %s\n",
- dev->driver->driver.name);
- stop_activity(dev, dev->driver);
- ep0_start(dev);
- return;
+ if (dev->gadget.speed != USB_SPEED_UNKNOWN) {
+ if ((stat & BIT(VBUS_INTERRUPT)) &&
+ (readl(&dev->usb->usbctl) &
+ BIT(VBUS_PIN)) == 0) {
+ disconnect = true;
+ ep_dbg(dev, "disconnect %s\n",
+ dev->driver->driver.name);
+ } else if ((stat & BIT(ROOT_PORT_RESET_INTERRUPT)) &&
+ (readl(&dev->usb->usbstat) & mask)
+ == 0) {
+ reset = true;
+ ep_dbg(dev, "reset %s\n",
+ dev->driver->driver.name);
+ }
+
+ if (disconnect || reset) {
+ stop_activity(dev, dev->driver);
+ ep0_start(dev);
+ spin_unlock(&dev->lock);
+ if (reset)
+ usb_gadget_udc_reset
+ (&dev->gadget, dev->driver);
+ else
+ (dev->driver->disconnect)
+ (&dev->gadget);
+ spin_lock(&dev->lock);
+ return;
+ }
}
stat &= ~tmp;
diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c
index dcdfea46003b..534b85c07feb 100644
--- a/drivers/usb/gadget/udc/omap_udc.c
+++ b/drivers/usb/gadget/udc/omap_udc.c
@@ -1311,8 +1311,7 @@ static int omap_pullup(struct usb_gadget *gadget, int is_on)
static int omap_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int omap_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int omap_udc_stop(struct usb_gadget *g);
static const struct usb_gadget_ops omap_gadget_ops = {
.get_frame = omap_get_frame,
@@ -2102,8 +2101,7 @@ done:
return status;
}
-static int omap_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int omap_udc_stop(struct usb_gadget *g)
{
unsigned long flags;
int status = -ENODEV;
diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index ccbe3d4a2a50..1c7379ac2379 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -1240,8 +1240,8 @@ static int pch_udc_pcd_vbus_draw(struct usb_gadget *gadget, unsigned int mA)
static int pch_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int pch_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int pch_udc_stop(struct usb_gadget *g);
+
static const struct usb_gadget_ops pch_udc_ops = {
.get_frame = pch_udc_pcd_get_frame,
.wakeup = pch_udc_pcd_wakeup,
@@ -2592,9 +2592,9 @@ static void pch_udc_svc_ur_interrupt(struct pch_udc_dev *dev)
/* Complete request queue */
empty_req_queue(ep);
}
- if (dev->driver && dev->driver->disconnect) {
+ if (dev->driver) {
spin_unlock(&dev->lock);
- dev->driver->disconnect(&dev->gadget);
+ usb_gadget_udc_reset(&dev->gadget, dev->driver);
spin_lock(&dev->lock);
}
}
@@ -3008,8 +3008,7 @@ static int pch_udc_start(struct usb_gadget *g,
return 0;
}
-static int pch_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int pch_udc_stop(struct usb_gadget *g)
{
struct pch_udc_dev *dev = to_pch_udc(g);
diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c
index 42f7eeb8ff6f..347a05b5afc1 100644
--- a/drivers/usb/gadget/udc/pxa25x_udc.c
+++ b/drivers/usb/gadget/udc/pxa25x_udc.c
@@ -998,8 +998,7 @@ static int pxa25x_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
static int pxa25x_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int pxa25x_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int pxa25x_udc_stop(struct usb_gadget *g);
static const struct usb_gadget_ops pxa25x_udc_ops = {
.get_frame = pxa25x_udc_get_frame,
@@ -1135,11 +1134,7 @@ static const struct file_operations debug_fops = {
dev->debugfs_udc = debugfs_create_file(dev->gadget.name, \
S_IRUGO, NULL, dev, &debug_fops); \
} while (0)
-#define remove_debug_files(dev) \
- do { \
- if (dev->debugfs_udc) \
- debugfs_remove(dev->debugfs_udc); \
- } while (0)
+#define remove_debug_files(dev) debugfs_remove(dev->debugfs_udc)
#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
@@ -1285,6 +1280,33 @@ bind_fail:
}
static void
+reset_gadget(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
+{
+ int i;
+
+ /* don't disconnect drivers more than once */
+ if (dev->gadget.speed == USB_SPEED_UNKNOWN)
+ driver = NULL;
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
+
+ /* prevent new request submissions, kill any outstanding requests */
+ for (i = 0; i < PXA_UDC_NUM_ENDPOINTS; i++) {
+ struct pxa25x_ep *ep = &dev->ep[i];
+
+ ep->stopped = 1;
+ nuke(ep, -ESHUTDOWN);
+ }
+ del_timer_sync(&dev->timer);
+
+ /* report reset; the driver is already quiesced */
+ if (driver)
+ usb_gadget_udc_reset(&dev->gadget, driver);
+
+ /* re-init driver-visible data structures */
+ udc_reinit(dev);
+}
+
+static void
stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
{
int i;
@@ -1311,15 +1333,14 @@ stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver)
udc_reinit(dev);
}
-static int pxa25x_udc_stop(struct usb_gadget*g,
- struct usb_gadget_driver *driver)
+static int pxa25x_udc_stop(struct usb_gadget*g)
{
struct pxa25x_udc *dev = to_pxa25x(g);
local_irq_disable();
dev->pullup = 0;
pullup(dev);
- stop_activity(dev, driver);
+ stop_activity(dev, NULL);
local_irq_enable();
if (!IS_ERR_OR_NULL(dev->transceiver))
@@ -1723,7 +1744,7 @@ pxa25x_udc_irq(int irq, void *_dev)
/* reset driver and endpoints,
* in case that's not yet done
*/
- stop_activity (dev, dev->driver);
+ reset_gadget(dev, dev->driver);
} else {
DBG(DBG_VERBOSE, "USB reset end\n");
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 4868369eeec6..9b03fab13707 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -22,10 +22,13 @@
#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/prefetch.h>
#include <linux/byteorder/generic.h>
#include <linux/platform_data/pxa2xx_udc.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
#include <linux/usb.h>
#include <linux/usb/ch9.h>
@@ -1507,18 +1510,13 @@ static struct usb_ep_ops pxa_ep_ops = {
*/
static void dplus_pullup(struct pxa_udc *udc, int on)
{
- if (on) {
- if (gpio_is_valid(udc->mach->gpio_pullup))
- gpio_set_value(udc->mach->gpio_pullup,
- !udc->mach->gpio_pullup_inverted);
- if (udc->mach->udc_command)
- udc->mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
- } else {
- if (gpio_is_valid(udc->mach->gpio_pullup))
- gpio_set_value(udc->mach->gpio_pullup,
- udc->mach->gpio_pullup_inverted);
- if (udc->mach->udc_command)
- udc->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
+ if (udc->gpiod) {
+ gpiod_set_value(udc->gpiod, on);
+ } else if (udc->udc_command) {
+ if (on)
+ udc->udc_command(PXA2XX_UDC_CMD_CONNECT);
+ else
+ udc->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
}
udc->pullup_on = on;
}
@@ -1609,7 +1607,7 @@ static int pxa_udc_pullup(struct usb_gadget *_gadget, int is_active)
{
struct pxa_udc *udc = to_gadget_udc(_gadget);
- if (!gpio_is_valid(udc->mach->gpio_pullup) && !udc->mach->udc_command)
+ if (!udc->gpiod && !udc->udc_command)
return -EOPNOTSUPP;
dplus_pullup(udc, is_active);
@@ -1671,8 +1669,7 @@ static int pxa_udc_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
static int pxa27x_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int pxa27x_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int pxa27x_udc_stop(struct usb_gadget *g);
static const struct usb_gadget_ops pxa_udc_ops = {
.get_frame = pxa_udc_get_frame,
@@ -1701,10 +1698,10 @@ static void udc_disable(struct pxa_udc *udc)
udc_writel(udc, UDCICR1, 0);
udc_clear_mask_UDCCR(udc, UDCCR_UDE);
- clk_disable(udc->clk);
ep0_idle(udc);
udc->gadget.speed = USB_SPEED_UNKNOWN;
+ clk_disable(udc->clk);
udc->enabled = 0;
}
@@ -1757,16 +1754,16 @@ static void udc_enable(struct pxa_udc *udc)
if (udc->enabled)
return;
+ clk_enable(udc->clk);
udc_writel(udc, UDCICR0, 0);
udc_writel(udc, UDCICR1, 0);
udc_clear_mask_UDCCR(udc, UDCCR_UDE);
- clk_enable(udc->clk);
-
ep0_idle(udc);
udc->gadget.speed = USB_SPEED_FULL;
memset(&udc->stats, 0, sizeof(udc->stats));
+ pxa_eps_setup(udc);
udc_set_mask_UDCCR(udc, UDCCR_UDE);
ep_write_UDCCSR(&udc->pxa_ep[0], UDCCSR0_ACM);
udelay(2);
@@ -1859,12 +1856,11 @@ static void stop_activity(struct pxa_udc *udc, struct usb_gadget_driver *driver)
*
* Returns 0 if no error, -ENODEV, -EINVAL otherwise
*/
-static int pxa27x_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int pxa27x_udc_stop(struct usb_gadget *g)
{
struct pxa_udc *udc = to_pxa(g);
- stop_activity(udc, driver);
+ stop_activity(udc, NULL);
udc_disable(udc);
dplus_pullup(udc, 0);
@@ -2404,6 +2400,14 @@ static struct pxa_udc memory = {
}
};
+#if defined(CONFIG_OF)
+static struct of_device_id udc_pxa_dt_ids[] = {
+ { .compatible = "marvell,pxa270-udc" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, udc_pxa_dt_ids);
+#endif
+
/**
* pxa_udc_probe - probes the udc device
* @_dev: platform device
@@ -2416,81 +2420,77 @@ static int pxa_udc_probe(struct platform_device *pdev)
struct resource *regs;
struct pxa_udc *udc = &memory;
int retval = 0, gpio;
+ struct pxa2xx_udc_mach_info *mach = dev_get_platdata(&pdev->dev);
+ unsigned long gpio_flags;
+
+ if (mach) {
+ gpio_flags = mach->gpio_pullup_inverted ? GPIOF_ACTIVE_LOW : 0;
+ gpio = mach->gpio_pullup;
+ if (gpio_is_valid(gpio)) {
+ retval = devm_gpio_request_one(&pdev->dev, gpio,
+ gpio_flags,
+ "USB D+ pullup");
+ if (retval)
+ return retval;
+ udc->gpiod = gpio_to_desc(mach->gpio_pullup);
+ }
+ udc->udc_command = mach->udc_command;
+ } else {
+ udc->gpiod = devm_gpiod_get(&pdev->dev, NULL);
+ }
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs)
- return -ENXIO;
+ udc->regs = devm_ioremap_resource(&pdev->dev, regs);
+ if (IS_ERR(udc->regs))
+ return PTR_ERR(udc->regs);
udc->irq = platform_get_irq(pdev, 0);
if (udc->irq < 0)
return udc->irq;
udc->dev = &pdev->dev;
- udc->mach = dev_get_platdata(&pdev->dev);
udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
- gpio = udc->mach->gpio_pullup;
- if (gpio_is_valid(gpio)) {
- retval = gpio_request(gpio, "USB D+ pullup");
- if (retval == 0)
- gpio_direction_output(gpio,
- udc->mach->gpio_pullup_inverted);
- }
- if (retval) {
- dev_err(&pdev->dev, "Couldn't request gpio %d : %d\n",
- gpio, retval);
- return retval;
+ if (IS_ERR(udc->gpiod)) {
+ dev_err(&pdev->dev, "Couldn't find or request D+ gpio : %ld\n",
+ PTR_ERR(udc->gpiod));
+ return PTR_ERR(udc->gpiod);
}
+ if (udc->gpiod)
+ gpiod_direction_output(udc->gpiod, 0);
+
+ udc->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(udc->clk))
+ return PTR_ERR(udc->clk);
- udc->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(udc->clk)) {
- retval = PTR_ERR(udc->clk);
- goto err_clk;
- }
retval = clk_prepare(udc->clk);
if (retval)
- goto err_clk_prepare;
-
- retval = -ENOMEM;
- udc->regs = ioremap(regs->start, resource_size(regs));
- if (!udc->regs) {
- dev_err(&pdev->dev, "Unable to map UDC I/O memory\n");
- goto err_map;
- }
+ return retval;
udc->vbus_sensed = 0;
the_controller = udc;
platform_set_drvdata(pdev, udc);
udc_init_data(udc);
- pxa_eps_setup(udc);
/* irq setup after old hardware state is cleaned up */
- retval = request_irq(udc->irq, pxa_udc_irq,
- IRQF_SHARED, driver_name, udc);
+ retval = devm_request_irq(&pdev->dev, udc->irq, pxa_udc_irq,
+ IRQF_SHARED, driver_name, udc);
if (retval != 0) {
dev_err(udc->dev, "%s: can't get irq %i, err %d\n",
driver_name, udc->irq, retval);
- goto err_irq;
+ goto err;
}
retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
if (retval)
- goto err_add_udc;
+ goto err;
pxa_init_debugfs(udc);
-
+ if (should_enable_udc(udc))
+ udc_enable(udc);
return 0;
-
-err_add_udc:
- free_irq(udc->irq, udc);
-err_irq:
- iounmap(udc->regs);
-err_map:
+err:
clk_unprepare(udc->clk);
-err_clk_prepare:
- clk_put(udc->clk);
- udc->clk = NULL;
-err_clk:
return retval;
}
@@ -2501,22 +2501,15 @@ err_clk:
static int pxa_udc_remove(struct platform_device *_dev)
{
struct pxa_udc *udc = platform_get_drvdata(_dev);
- int gpio = udc->mach->gpio_pullup;
usb_del_gadget_udc(&udc->gadget);
- usb_gadget_unregister_driver(udc->driver);
- free_irq(udc->irq, udc);
pxa_cleanup_debugfs(udc);
- if (gpio_is_valid(gpio))
- gpio_free(gpio);
usb_put_phy(udc->transceiver);
udc->transceiver = NULL;
the_controller = NULL;
clk_unprepare(udc->clk);
- clk_put(udc->clk);
- iounmap(udc->regs);
return 0;
}
@@ -2546,19 +2539,11 @@ extern void pxa27x_clear_otgph(void);
*/
static int pxa_udc_suspend(struct platform_device *_dev, pm_message_t state)
{
- int i;
struct pxa_udc *udc = platform_get_drvdata(_dev);
struct pxa_ep *ep;
ep = &udc->pxa_ep[0];
udc->udccsr0 = udc_ep_readl(ep, UDCCSR);
- for (i = 1; i < NR_PXA_ENDPOINTS; i++) {
- ep = &udc->pxa_ep[i];
- ep->udccsr_value = udc_ep_readl(ep, UDCCSR);
- ep->udccr_value = udc_ep_readl(ep, UDCCR);
- ep_dbg(ep, "udccsr:0x%03x, udccr:0x%x\n",
- ep->udccsr_value, ep->udccr_value);
- }
udc_disable(udc);
udc->pullup_resume = udc->pullup_on;
@@ -2576,19 +2561,11 @@ static int pxa_udc_suspend(struct platform_device *_dev, pm_message_t state)
*/
static int pxa_udc_resume(struct platform_device *_dev)
{
- int i;
struct pxa_udc *udc = platform_get_drvdata(_dev);
struct pxa_ep *ep;
ep = &udc->pxa_ep[0];
udc_ep_writel(ep, UDCCSR, udc->udccsr0 & (UDCCSR0_FST | UDCCSR0_DME));
- for (i = 1; i < NR_PXA_ENDPOINTS; i++) {
- ep = &udc->pxa_ep[i];
- udc_ep_writel(ep, UDCCSR, ep->udccsr_value);
- udc_ep_writel(ep, UDCCR, ep->udccr_value);
- ep_dbg(ep, "udccsr:0x%03x, udccr:0x%x\n",
- ep->udccsr_value, ep->udccr_value);
- }
dplus_pullup(udc, udc->pullup_resume);
if (should_enable_udc(udc))
@@ -2615,6 +2592,7 @@ static struct platform_driver udc_driver = {
.driver = {
.name = "pxa27x-udc",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(udc_pxa_dt_ids),
},
.probe = pxa_udc_probe,
.remove = pxa_udc_remove,
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.h b/drivers/usb/gadget/udc/pxa27x_udc.h
index 28f2b53530f5..11e14232794b 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.h
+++ b/drivers/usb/gadget/udc/pxa27x_udc.h
@@ -420,7 +420,8 @@ struct udc_stats {
* @usb_gadget: udc gadget structure
* @driver: bound gadget (zero, g_ether, g_mass_storage, ...)
* @dev: device
- * @mach: machine info, used to activate specific GPIO
+ * @udc_command: machine specific function to activate D+ pullup
+ * @gpiod: gpio descriptor of gpio for D+ pullup (or NULL if none)
* @transceiver: external transceiver to handle vbus sense and D+ pullup
* @ep0state: control endpoint state machine state
* @stats: statistics on udc usage
@@ -446,7 +447,8 @@ struct pxa_udc {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
struct device *dev;
- struct pxa2xx_udc_mach_info *mach;
+ void (*udc_command)(int);
+ struct gpio_desc *gpiod;
struct usb_phy *transceiver;
enum ep0_state ep0state;
diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
index f8186613b53e..06870da0b988 100644
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@@ -1345,7 +1345,7 @@ static void irq_device_state(struct r8a66597 *r8a66597)
if (dvsq == DS_DFLT) {
/* bus reset */
spin_unlock(&r8a66597->lock);
- r8a66597->driver->disconnect(&r8a66597->gadget);
+ usb_gadget_udc_reset(&r8a66597->gadget, r8a66597->driver);
spin_lock(&r8a66597->lock);
r8a66597_update_usb_speed(r8a66597);
}
@@ -1763,8 +1763,7 @@ static int r8a66597_start(struct usb_gadget *gadget,
return 0;
}
-static int r8a66597_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int r8a66597_stop(struct usb_gadget *gadget)
{
struct r8a66597 *r8a66597 = gadget_to_r8a66597(gadget);
unsigned long flags;
@@ -1846,10 +1845,7 @@ static int r8a66597_sudmac_ioremap(struct r8a66597 *r8a66597,
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sudmac");
r8a66597->sudmac_reg = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(r8a66597->sudmac_reg))
- return PTR_ERR(r8a66597->sudmac_reg);
-
- return 0;
+ return PTR_ERR_OR_ZERO(r8a66597->sudmac_reg);
}
static int r8a66597_probe(struct platform_device *pdev)
diff --git a/drivers/usb/gadget/udc/s3c-hsudc.c b/drivers/usb/gadget/udc/s3c-hsudc.c
index dfbf55797360..97d3a9144381 100644
--- a/drivers/usb/gadget/udc/s3c-hsudc.c
+++ b/drivers/usb/gadget/udc/s3c-hsudc.c
@@ -1172,8 +1172,6 @@ static int s3c_hsudc_start(struct usb_gadget *gadget,
}
enable_irq(hsudc->irq);
- dev_info(hsudc->dev, "bound driver %s\n", driver->driver.name);
-
s3c_hsudc_reconfig(hsudc);
pm_runtime_get_sync(hsudc->dev);
@@ -1190,8 +1188,7 @@ err_supplies:
return ret;
}
-static int s3c_hsudc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int s3c_hsudc_stop(struct usb_gadget *gadget)
{
struct s3c_hsudc *hsudc = to_hsudc(gadget);
unsigned long flags;
@@ -1199,11 +1196,7 @@ static int s3c_hsudc_stop(struct usb_gadget *gadget,
if (!hsudc)
return -ENODEV;
- if (!driver || driver != hsudc->driver)
- return -EINVAL;
-
spin_lock_irqsave(&hsudc->lock, flags);
- hsudc->driver = NULL;
hsudc->gadget.speed = USB_SPEED_UNKNOWN;
s3c_hsudc_uninit_phy();
@@ -1220,9 +1213,8 @@ static int s3c_hsudc_stop(struct usb_gadget *gadget,
disable_irq(hsudc->irq);
regulator_bulk_disable(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);
+ hsudc->driver = NULL;
- dev_info(hsudc->dev, "unregistered gadget driver '%s'\n",
- driver->driver.name);
return 0;
}
@@ -1267,10 +1259,8 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
hsudc = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsudc) +
sizeof(struct s3c_hsudc_ep) * pd->epnum,
GFP_KERNEL);
- if (!hsudc) {
- dev_err(dev, "cannot allocate memory\n");
+ if (!hsudc)
return -ENOMEM;
- }
platform_set_drvdata(pdev, dev);
hsudc->dev = dev;
diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c
index ff423d15beff..2a8e36d31488 100644
--- a/drivers/usb/gadget/udc/s3c2410_udc.c
+++ b/drivers/usb/gadget/udc/s3c2410_udc.c
@@ -1541,8 +1541,7 @@ static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
static int s3c2410_udc_start(struct usb_gadget *g,
struct usb_gadget_driver *driver);
-static int s3c2410_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver);
+static int s3c2410_udc_stop(struct usb_gadget *g);
static const struct usb_gadget_ops s3c2410_ops = {
.get_frame = s3c2410_udc_get_frame,
@@ -1683,8 +1682,7 @@ static int s3c2410_udc_start(struct usb_gadget *g,
return 0;
}
-static int s3c2410_udc_stop(struct usb_gadget *g,
- struct usb_gadget_driver *driver)
+static int s3c2410_udc_stop(struct usb_gadget *g)
{
struct s3c2410_udc *udc = to_s3c2410(g);
diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
index f2054659f25b..e31d574d8860 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -174,8 +174,7 @@ EXPORT_SYMBOL_GPL(usb_gadget_udc_reset);
/**
* usb_gadget_udc_start - tells usb device controller to start up
- * @gadget: The gadget we want to get started
- * @driver: The driver we want to bind to @gadget
+ * @udc: The UDC to be started
*
* This call is issued by the UDC Class driver when it's about
* to register a gadget driver to the device controller, before
@@ -186,10 +185,9 @@ EXPORT_SYMBOL_GPL(usb_gadget_udc_reset);
*
* Returns zero on success, else negative errno.
*/
-static inline int usb_gadget_udc_start(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static inline int usb_gadget_udc_start(struct usb_udc *udc)
{
- return gadget->ops->udc_start(gadget, driver);
+ return udc->gadget->ops->udc_start(udc->gadget, udc->driver);
}
/**
@@ -204,10 +202,9 @@ static inline int usb_gadget_udc_start(struct usb_gadget *gadget,
* far as powering off UDC completely and disable its data
* line pullups.
*/
-static inline void usb_gadget_udc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static inline void usb_gadget_udc_stop(struct usb_udc *udc)
{
- gadget->ops->udc_stop(gadget, driver);
+ udc->gadget->ops->udc_stop(udc->gadget);
}
/**
@@ -328,14 +325,14 @@ EXPORT_SYMBOL_GPL(usb_add_gadget_udc);
static void usb_gadget_remove_driver(struct usb_udc *udc)
{
dev_dbg(&udc->dev, "unregistering UDC driver [%s]\n",
- udc->gadget->name);
+ udc->driver->function);
kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
usb_gadget_disconnect(udc->gadget);
udc->driver->disconnect(udc->gadget);
udc->driver->unbind(udc->gadget);
- usb_gadget_udc_stop(udc->gadget, NULL);
+ usb_gadget_udc_stop(udc);
udc->driver = NULL;
udc->dev.driver = NULL;
@@ -395,7 +392,7 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri
ret = driver->bind(udc->gadget, driver);
if (ret)
goto err1;
- ret = usb_gadget_udc_start(udc->gadget, driver);
+ ret = usb_gadget_udc_start(udc);
if (ret) {
driver->unbind(udc->gadget);
goto err1;
@@ -414,7 +411,7 @@ err1:
return ret;
}
-int udc_attach_driver(const char *name, struct usb_gadget_driver *driver)
+int usb_udc_attach_driver(const char *name, struct usb_gadget_driver *driver)
{
struct usb_udc *udc = NULL;
int ret = -ENODEV;
@@ -438,7 +435,7 @@ out:
mutex_unlock(&udc_lock);
return ret;
}
-EXPORT_SYMBOL_GPL(udc_attach_driver);
+EXPORT_SYMBOL_GPL(usb_udc_attach_driver);
int usb_gadget_probe_driver(struct usb_gadget_driver *driver)
{
@@ -513,11 +510,12 @@ static ssize_t usb_udc_softconn_store(struct device *dev,
}
if (sysfs_streq(buf, "connect")) {
- usb_gadget_udc_start(udc->gadget, udc->driver);
+ usb_gadget_udc_start(udc);
usb_gadget_connect(udc->gadget);
} else if (sysfs_streq(buf, "disconnect")) {
usb_gadget_disconnect(udc->gadget);
- usb_gadget_udc_stop(udc->gadget, udc->driver);
+ udc->driver->disconnect(udc->gadget);
+ usb_gadget_udc_stop(udc);
} else {
dev_err(dev, "unsupported command '%s'\n", buf);
return -EINVAL;
diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c
index ed27e1687a4e..1eac56fc384d 100644
--- a/drivers/usb/gadget/udc/udc-xilinx.c
+++ b/drivers/usb/gadget/udc/udc-xilinx.c
@@ -1403,8 +1403,7 @@ err:
*
* Return: zero always
*/
-static int xudc_stop(struct usb_gadget *gadget,
- struct usb_gadget_driver *driver)
+static int xudc_stop(struct usb_gadget *gadget)
{
struct xusb_udc *udc = to_udc(gadget);
unsigned long flags;
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index a3ca1375dd52..fafc628480e0 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -292,11 +292,15 @@ config USB_EHCI_HCD_PLATFORM
If unsure, say N.
config USB_OCTEON_EHCI
- bool "Octeon on-chip EHCI support"
+ bool "Octeon on-chip EHCI support (DEPRECATED)"
depends on CAVIUM_OCTEON_SOC
default n
select USB_EHCI_BIG_ENDIAN_MMIO
+ select USB_EHCI_HCD_PLATFORM
help
+ This option is deprecated now and the driver was removed, use
+ USB_EHCI_HCD_PLATFORM instead.
+
Enable support for the Octeon II SOC's on-chip EHCI
controller. It is needed for high-speed (480Mbit/sec)
USB 2.0 device support. All CN6XXX based chips with USB are
@@ -575,12 +579,16 @@ config USB_OHCI_HCD_PLATFORM
If unsure, say N.
config USB_OCTEON_OHCI
- bool "Octeon on-chip OHCI support"
+ bool "Octeon on-chip OHCI support (DEPRECATED)"
depends on CAVIUM_OCTEON_SOC
default USB_OCTEON_EHCI
select USB_OHCI_BIG_ENDIAN_MMIO
select USB_OHCI_LITTLE_ENDIAN
+ select USB_OHCI_HCD_PLATFORM
help
+ This option is deprecated now and the driver was removed, use
+ USB_OHCI_HCD_PLATFORM instead.
+
Enable support for the Octeon II SOC's on-chip OHCI
controller. It is needed for low-speed USB 1.0 device
support. All CN6XXX based chips with USB are supported.
@@ -754,12 +762,6 @@ config USB_IMX21_HCD
To compile this driver as a module, choose M here: the
module will be called "imx21-hcd".
-
-
-config USB_OCTEON2_COMMON
- bool
- default y if USB_OCTEON_EHCI || USB_OCTEON_OHCI
-
config USB_HCD_BCMA
tristate "BCMA usb host driver"
depends on BCMA
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 348c24321562..d6216a493bab 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -73,7 +73,6 @@ obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o
obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o
obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o
obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o
-obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o
obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
index ec9f7b75d497..56a88506febe 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -107,22 +107,15 @@ static int ehci_atmel_drv_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev,
- "Found HC with no register addr. Check %s setup!\n",
- dev_name(&pdev->dev));
- retval = -ENODEV;
- goto fail_request_resource;
- }
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
retval = PTR_ERR(hcd->regs);
goto fail_request_resource;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
iclk = devm_clk_get(&pdev->dev, "ehci_clk");
if (IS_ERR(iclk)) {
dev_err(&pdev->dev, "Error getting interface clock\n");
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index 7189f2e32ac2..f58c9750e3e4 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -74,7 +74,6 @@ static int exynos_ehci_get_phy(struct device *dev,
phy = devm_of_phy_get(dev, child, NULL);
exynos_ehci->phy[phy_number] = phy;
- of_node_put(child);
if (IS_ERR(phy)) {
ret = PTR_ERR(phy);
if (ret == -EPROBE_DEFER) {
@@ -188,20 +187,15 @@ skip_phy:
goto fail_clk;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Failed to get I/O memory\n");
- err = -ENXIO;
- goto fail_io;
- }
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
goto fail_io;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
irq = platform_get_irq(pdev, 0);
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 2d2ae8db439e..fb7bd0c7dc15 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -93,21 +93,15 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev,
- "Found HC with no register addr. Check %s setup!\n",
- dev_name(&pdev->dev));
- retval = -ENODEV;
- goto err2;
- }
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
retval = PTR_ERR(hcd->regs);
goto err2;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
pdata->regs = hcd->regs;
if (pdata->power_budget)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 15feaf924b71..38bfeedae1d0 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -311,6 +311,7 @@ static void unlink_empty_async_suspended(struct ehci_hcd *ehci);
static void ehci_work(struct ehci_hcd *ehci);
static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
+static int ehci_port_power(struct ehci_hcd *ehci, int portnum, bool enable);
#include "ehci-timer.c"
#include "ehci-hub.c"
@@ -329,9 +330,13 @@ static void ehci_turn_off_all_ports(struct ehci_hcd *ehci)
{
int port = HCS_N_PORTS(ehci->hcs_params);
- while (port--)
+ while (port--) {
ehci_writel(ehci, PORT_RWC_BITS,
&ehci->regs->port_status[port]);
+ spin_unlock_irq(&ehci->lock);
+ ehci_port_power(ehci, port, false);
+ spin_lock_irq(&ehci->lock);
+ }
}
/*
@@ -1233,6 +1238,8 @@ void ehci_init_driver(struct hc_driver *drv,
drv->hcd_priv_size += over->extra_priv_size;
if (over->reset)
drv->reset = over->reset;
+ if (over->port_power)
+ drv->port_power = over->port_power;
}
}
EXPORT_SYMBOL_GPL(ehci_init_driver);
@@ -1268,11 +1275,6 @@ MODULE_LICENSE ("GPL");
#define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver
#endif
-#ifdef CONFIG_USB_OCTEON_EHCI
-#include "ehci-octeon.c"
-#define PLATFORM_DRIVER ehci_octeon_driver
-#endif
-
#ifdef CONFIG_TILE_USB
#include "ehci-tilegx.c"
#define PLATFORM_DRIVER ehci_hcd_tilegx_driver
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 5728829cf6ef..118edb7bdca2 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -69,10 +69,8 @@ static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
if (test_bit(port, &ehci->owned_ports)) {
reg = &ehci->regs->port_status[port];
status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
- if (!(status & PORT_POWER)) {
- status |= PORT_POWER;
- ehci_writel(ehci, status, reg);
- }
+ if (!(status & PORT_POWER))
+ ehci_port_power(ehci, port, true);
}
}
@@ -952,9 +950,11 @@ int ehci_hub_control(
clear_bit(wIndex, &ehci->port_c_suspend);
break;
case USB_PORT_FEAT_POWER:
- if (HCS_PPC (ehci->hcs_params))
- ehci_writel(ehci, temp & ~PORT_POWER,
- status_reg);
+ if (HCS_PPC(ehci->hcs_params)) {
+ spin_unlock_irqrestore(&ehci->lock, flags);
+ ehci_port_power(ehci, wIndex, false);
+ spin_lock_irqsave(&ehci->lock, flags);
+ }
break;
case USB_PORT_FEAT_C_CONNECTION:
ehci_writel(ehci, temp | PORT_CSC, status_reg);
@@ -1004,9 +1004,9 @@ int ehci_hub_control(
*/
if (((temp & PORT_OC) || (ehci->need_oc_pp_cycle))
&& HCS_PPC(ehci->hcs_params)) {
- ehci_writel(ehci,
- temp & ~(PORT_RWC_BITS | PORT_POWER),
- status_reg);
+ spin_unlock_irqrestore(&ehci->lock, flags);
+ ehci_port_power(ehci, wIndex, false);
+ spin_lock_irqsave(&ehci->lock, flags);
temp = ehci_readl(ehci, status_reg);
}
}
@@ -1187,9 +1187,11 @@ int ehci_hub_control(
set_bit(wIndex, &ehci->suspended_ports);
break;
case USB_PORT_FEAT_POWER:
- if (HCS_PPC (ehci->hcs_params))
- ehci_writel(ehci, temp | PORT_POWER,
- status_reg);
+ if (HCS_PPC(ehci->hcs_params)) {
+ spin_unlock_irqrestore(&ehci->lock, flags);
+ ehci_port_power(ehci, wIndex, true);
+ spin_lock_irqsave(&ehci->lock, flags);
+ }
break;
case USB_PORT_FEAT_RESET:
if (temp & (PORT_SUSPEND|PORT_RESUME))
@@ -1297,3 +1299,20 @@ static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum)
reg = &ehci->regs->port_status[portnum - 1];
return ehci_readl(ehci, reg) & PORT_OWNER;
}
+
+static int ehci_port_power(struct ehci_hcd *ehci, int portnum, bool enable)
+{
+ struct usb_hcd *hcd = ehci_to_hcd(ehci);
+ u32 __iomem *status_reg = &ehci->regs->port_status[portnum];
+ u32 temp = ehci_readl(ehci, status_reg) & ~PORT_RWC_BITS;
+
+ if (enable)
+ ehci_writel(ehci, temp | PORT_POWER, status_reg);
+ else
+ ehci_writel(ehci, temp & ~PORT_POWER, status_reg);
+
+ if (hcd->driver->port_power)
+ hcd->driver->port_power(hcd, portnum, enable);
+
+ return 0;
+}
diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c
index 9dc2118ae808..9db74ca7e5b9 100644
--- a/drivers/usb/host/ehci-msm.c
+++ b/drivers/usb/host/ehci-msm.c
@@ -88,19 +88,13 @@ static int ehci_msm_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Unable to get memory resource\n");
- ret = -ENODEV;
- goto put_hcd;
- }
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto put_hcd;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
/*
* OTG driver takes care of PHY initialization, clock management,
diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index 08147c35f836..849806a75f1c 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -153,7 +153,6 @@ static int mv_ehci_probe(struct platform_device *pdev)
ehci_mv = devm_kzalloc(&pdev->dev, sizeof(*ehci_mv), GFP_KERNEL);
if (ehci_mv == NULL) {
- dev_err(&pdev->dev, "cannot allocate ehci_hcd_mv\n");
retval = -ENOMEM;
goto err_put_hcd;
}
@@ -170,12 +169,6 @@ static int mv_ehci_probe(struct platform_device *pdev)
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phyregs");
- if (r == NULL) {
- dev_err(&pdev->dev, "no phy I/O memory resource defined\n");
- retval = -ENODEV;
- goto err_put_hcd;
- }
-
ehci_mv->phy_regs = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(ehci_mv->phy_regs)) {
retval = PTR_ERR(ehci_mv->phy_regs);
@@ -183,12 +176,6 @@ static int mv_ehci_probe(struct platform_device *pdev)
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "capregs");
- if (!r) {
- dev_err(&pdev->dev, "no I/O memory resource defined\n");
- retval = -ENODEV;
- goto err_put_hcd;
- }
-
ehci_mv->cap_regs = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(ehci_mv->cap_regs)) {
retval = PTR_ERR(ehci_mv->cap_regs);
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index dbe5e4eea08d..c7a9b31eeaef 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -69,20 +69,13 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(dev, "Found HC with no register addr. Check setup!\n");
- ret = -ENODEV;
- goto err_alloc;
- }
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto err_alloc;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
hcd->has_tt = 1;
ehci = hcd_to_ehci(hcd);
diff --git a/drivers/usb/host/ehci-octeon.c b/drivers/usb/host/ehci-octeon.c
deleted file mode 100644
index 9051439039a7..000000000000
--- a/drivers/usb/host/ehci-octeon.c
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * EHCI HCD glue for Cavium Octeon II SOCs.
- *
- * Loosely based on ehci-au1xxx.c
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2010 Cavium Networks
- *
- */
-
-#include <linux/platform_device.h>
-
-#include <asm/octeon/octeon.h>
-#include <asm/octeon/cvmx-uctlx-defs.h>
-
-#define OCTEON_EHCI_HCD_NAME "octeon-ehci"
-
-/* Common clock init code. */
-void octeon2_usb_clocks_start(void);
-void octeon2_usb_clocks_stop(void);
-
-static void ehci_octeon_start(void)
-{
- union cvmx_uctlx_ehci_ctl ehci_ctl;
-
- octeon2_usb_clocks_start();
-
- ehci_ctl.u64 = cvmx_read_csr(CVMX_UCTLX_EHCI_CTL(0));
- /* Use 64-bit addressing. */
- ehci_ctl.s.ehci_64b_addr_en = 1;
- ehci_ctl.s.l2c_addr_msb = 0;
- ehci_ctl.s.l2c_buff_emod = 1; /* Byte swapped. */
- ehci_ctl.s.l2c_desc_emod = 1; /* Byte swapped. */
- cvmx_write_csr(CVMX_UCTLX_EHCI_CTL(0), ehci_ctl.u64);
-}
-
-static void ehci_octeon_stop(void)
-{
- octeon2_usb_clocks_stop();
-}
-
-static const struct hc_driver ehci_octeon_hc_driver = {
- .description = hcd_name,
- .product_desc = "Octeon EHCI",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
-
- /*
- * basic lifecycle operations
- */
- .reset = ehci_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
-
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
-
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
-static u64 ehci_octeon_dma_mask = DMA_BIT_MASK(64);
-
-static int ehci_octeon_drv_probe(struct platform_device *pdev)
-{
- struct usb_hcd *hcd;
- struct ehci_hcd *ehci;
- struct resource *res_mem;
- int irq;
- int ret;
-
- if (usb_disabled())
- return -ENODEV;
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "No irq assigned\n");
- return -ENODEV;
- }
-
- res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res_mem == NULL) {
- dev_err(&pdev->dev, "No register space assigned\n");
- return -ENODEV;
- }
-
- /*
- * We can DMA from anywhere. But the descriptors must be in
- * the lower 4GB.
- */
- pdev->dev.dma_mask = &ehci_octeon_dma_mask;
- ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- hcd = usb_create_hcd(&ehci_octeon_hc_driver, &pdev->dev, "octeon");
- if (!hcd)
- return -ENOMEM;
-
- hcd->rsrc_start = res_mem->start;
- hcd->rsrc_len = resource_size(res_mem);
-
- hcd->regs = devm_ioremap_resource(&pdev->dev, res_mem);
- if (IS_ERR(hcd->regs)) {
- ret = PTR_ERR(hcd->regs);
- goto err1;
- }
-
- ehci_octeon_start();
-
- ehci = hcd_to_ehci(hcd);
-
- /* Octeon EHCI matches CPU endianness. */
-#ifdef __BIG_ENDIAN
- ehci->big_endian_mmio = 1;
-#endif
-
- ehci->caps = hcd->regs;
-
- ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
- if (ret) {
- dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
- goto err2;
- }
- device_wakeup_enable(hcd->self.controller);
-
- platform_set_drvdata(pdev, hcd);
-
- return 0;
-err2:
- ehci_octeon_stop();
-
-err1:
- usb_put_hcd(hcd);
- return ret;
-}
-
-static int ehci_octeon_drv_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
-
- usb_remove_hcd(hcd);
-
- ehci_octeon_stop();
- usb_put_hcd(hcd);
-
- return 0;
-}
-
-static struct platform_driver ehci_octeon_driver = {
- .probe = ehci_octeon_drv_probe,
- .remove = ehci_octeon_drv_remove,
- .shutdown = usb_hcd_platform_shutdown,
- .driver = {
- .name = OCTEON_EHCI_HCD_NAME,
- .owner = THIS_MODULE,
- }
-};
-
-MODULE_ALIAS("platform:" OCTEON_EHCI_HCD_NAME);
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 22e15cab8ea5..3c76489ea61a 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -25,8 +25,8 @@
#include "ehci.h"
-#define rdl(off) __raw_readl(hcd->regs + (off))
-#define wrl(off, val) __raw_writel((val), hcd->regs + (off))
+#define rdl(off) readl_relaxed(hcd->regs + (off))
+#define wrl(off, val) writel_relaxed((val), hcd->regs + (off))
#define USB_CMD 0x140
#define USB_MODE 0x1a8
@@ -175,15 +175,6 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
goto err;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev,
- "Found HC with no register addr. Check %s setup!\n",
- dev_name(&pdev->dev));
- err = -ENODEV;
- goto err;
- }
-
/*
* Right now device-tree probed devices don't get dma_mask
* set. Since shared usb code relies on it, set it here for
@@ -193,6 +184,7 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
if (err)
goto err;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs)) {
err = PTR_ERR(regs);
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 2f5b9ce3e042..35a9aeda0168 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -164,11 +164,6 @@ static int ehci_platform_probe(struct platform_device *dev)
dev_err(&dev->dev, "no irq provided");
return irq;
}
- res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (!res_mem) {
- dev_err(&dev->dev, "no memory resource provided");
- return -ENXIO;
- }
hcd = usb_create_hcd(&ehci_platform_hc_driver, &dev->dev,
dev_name(&dev->dev));
@@ -250,14 +245,15 @@ static int ehci_platform_probe(struct platform_device *dev)
goto err_reset;
}
- hcd->rsrc_start = res_mem->start;
- hcd->rsrc_len = resource_size(res_mem);
-
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
goto err_power;
}
+ hcd->rsrc_start = res_mem->start;
+ hcd->rsrc_len = resource_size(res_mem);
+
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
goto err_power;
@@ -311,8 +307,7 @@ static int ehci_platform_remove(struct platform_device *dev)
return 0;
}
-#ifdef CONFIG_PM
-
+#ifdef CONFIG_PM_SLEEP
static int ehci_platform_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
@@ -348,11 +343,7 @@ static int ehci_platform_resume(struct device *dev)
ehci_resume(hcd, false);
return 0;
}
-
-#else /* !CONFIG_PM */
-#define ehci_platform_suspend NULL
-#define ehci_platform_resume NULL
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
static const struct of_device_id vt8500_ehci_ids[] = {
{ .compatible = "via,vt8500-ehci", },
@@ -368,10 +359,8 @@ static const struct platform_device_id ehci_platform_table[] = {
};
MODULE_DEVICE_TABLE(platform, ehci_platform_table);
-static const struct dev_pm_ops ehci_platform_pm_ops = {
- .suspend = ehci_platform_suspend,
- .resume = ehci_platform_resume,
-};
+static SIMPLE_DEV_PM_OPS(ehci_platform_pm_ops, ehci_platform_suspend,
+ ehci_platform_resume);
static struct platform_driver ehci_platform_driver = {
.id_table = ehci_platform_table,
diff --git a/drivers/usb/host/ehci-sead3.c b/drivers/usb/host/ehci-sead3.c
index cf1267673868..9b6e8d0eac43 100644
--- a/drivers/usb/host/ehci-sead3.c
+++ b/drivers/usb/host/ehci-sead3.c
@@ -110,14 +110,13 @@ static int ehci_hcd_sead3_drv_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto err1;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
/* Root hub has integrated TT. */
hcd->has_tt = 1;
diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c
index 9b9b9f5b016e..0e0ce684aff3 100644
--- a/drivers/usb/host/ehci-sh.c
+++ b/drivers/usb/host/ehci-sh.c
@@ -86,15 +86,6 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
if (usb_disabled())
return -ENODEV;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev,
- "Found HC with no register addr. Check %s setup!\n",
- dev_name(&pdev->dev));
- ret = -ENODEV;
- goto fail_create_hcd;
- }
-
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(&pdev->dev,
@@ -114,19 +105,18 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
goto fail_create_hcd;
}
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto fail_request_resource;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
priv = devm_kzalloc(&pdev->dev, sizeof(struct ehci_sh_priv),
GFP_KERNEL);
if (!priv) {
- dev_dbg(&pdev->dev, "error allocating priv data\n");
ret = -ENOMEM;
goto fail_request_resource;
}
diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c
index 1355ff0946b9..34e14746b92e 100644
--- a/drivers/usb/host/ehci-spear.c
+++ b/drivers/usb/host/ehci-spear.c
@@ -99,18 +99,13 @@ static int spear_ehci_hcd_drv_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- retval = -ENODEV;
- goto err_put_hcd;
- }
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
retval = PTR_ERR(hcd->regs);
goto err_put_hcd;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
sehci = to_spear_ehci(hcd);
sehci->clk = usbh_clk;
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index aaa01971efe9..19a9af1b4d74 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -460,18 +460,14 @@ static int tegra_ehci_probe(struct platform_device *pdev)
"nvidia,needs-double-reset");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Failed to get I/O memory\n");
- err = -ENXIO;
- goto cleanup_clk_en;
- }
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
goto cleanup_clk_en;
}
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resourc