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2015-07-01Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-2/+1
Pull irq fixes from Thomas Gleixner: "This contains: - a series of fixes for interrupt drivers to prevent a potential race when installing a chained interrupt handler - a fix for cpumask pointer misuse - a fix for using the wrong interrupt number from struct irq_data - removal of unused code and outdated comments - a few new helper functions which allow us to cleanup the interrupt handling code further in 4.3 I decided against doing the cleanup at the end of this merge window and rather do the preparatory steps for 4.3, so we can run the final ABI change at the end of the 4.3 merge window with less risk" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits) ARM/LPC32xx: Use irq not hwirq for __irq_set_handler_locked() genirq: Implement irq_set_handler_locked()/irq_set_chip_handler_name_locked() genirq: Introduce helper irq_desc_get_irq() genirq: Remove irq_node() genirq: Clean up outdated comments related to include/linux/irqdesc.h mn10300: Fix incorrect use of irq_data->affinity MIPS/ralink: Fix race in installing chained IRQ handler MIPS/pci: Fix race in installing chained IRQ handler MIPS/ath25: Fix race in installing chained IRQ handler MIPS/ath25: Fix race in installing chained IRQ handler m68k/psc: Fix race in installing chained IRQ handler avr32/at32ap: Fix race in installing chained IRQ handler sh/intc: Fix race in installing chained IRQ handler sh/intc: Fix potential race in installing chained IRQ handler pinctrl/sun4i: Fix race in installing chained IRQ handler pinctrl/samsung: Fix race in installing chained IRQ handler pinctrl/samsung: Fix race in installing chained IRQ handler pinctrl/exynos: Fix race in installing chained IRQ handler pinctrl/st: Fix race in installing chained IRQ handler pinctrl/adi2: Fix race in installing chained IRQ handler ...
2015-06-25pinctrl/mediatek: Fix race in installing chained IRQ handlerThomas Gleixner1-2/+1
Fix a race where a pending interrupt could be received and the handler called before the handler's data has been setup, by converting to irq_set_chained_handler_and_data(). Search and conversion was done with coccinelle: @@ expression E1, E2, E3; @@ ( -if (irq_set_chained_handler(E1, E3) != 0) - BUG(); | -irq_set_chained_handler(E1, E3); ) -irq_set_handler_data(E1, E2); +irq_set_chained_handler_and_data(E1, E3, E2); @@ expression E1, E2, E3; @@ ( -if (irq_set_chained_handler(E1, E3) != 0) - BUG(); ... | -irq_set_chained_handler(E1, E3); ... ) -irq_set_handler_data(E1, E2); +irq_set_chained_handler_and_data(E1, E3, E2); Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Hongzhou Yang <hongzhou.yang@mediatek.com> Cc: Axel Lin <axel.lin@ingics.com> Cc: Yingjoe Chen <yingjoe.chen@mediatek.com> Cc: Maoguang Meng <maoguang.meng@mediatek.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: linux-gpio@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org
2015-06-24Merge tag 'pinctrl-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds10-260/+2558
Pull pin control updates from Linus Walleij: "Here is the bulk of pin control changes for the v4.2 series: Quite a lot of new SoC subdrivers and two new main drivers this time, apart from that business as usual. Details: Core functionality: - Enable exclusive pin ownership: it is possible to flag a pin controller so that GPIO and other functions cannot use a single pin simultaneously. New drivers: - NXP LPC18xx System Control Unit pin controller - Imagination Pistachio SoC pin controller New subdrivers: - Freescale i.MX7d SoC - Intel Sunrisepoint-H PCH - Renesas PFC R8A7793 - Renesas PFC R8A7794 - Mediatek MT6397, MT8127 - SiRF Atlas 7 - Allwinner A33 - Qualcomm MSM8660 - Marvell Armada 395 - Rockchip RK3368 Cleanups: - A big cleanup of the Marvell MVEBU driver rectifying it to correspond to reality - Drop platform device probing from the SH PFC driver, we are now a DT only shop for SuperH - Drop obsolte multi-platform check for SH PFC - Various janitorial: constification, grammar etc Improvements: - The AT91 GPIO portions now supports the set_multiple() feature - Split out SPI pins on the Xilinx Zynq - Support DTs without specific function nodes in the i.MX driver" * tag 'pinctrl-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (99 commits) pinctrl: rockchip: add support for the rk3368 pinctrl: rockchip: generalize perpin driver-strength setting pinctrl: sh-pfc: r8a7794: add SDHI pin groups pinctrl: sh-pfc: r8a7794: add MMCIF pin groups pinctrl: sh-pfc: add R8A7794 PFC support pinctrl: make pinctrl_register() return proper error code pinctrl: mvebu: armada-39x: add support for Armada 395 variant pinctrl: mvebu: armada-39x: add missing SATA functions pinctrl: mvebu: armada-39x: add missing PCIe functions pinctrl: mvebu: armada-38x: add ptp functions pinctrl: mvebu: armada-38x: add ua1 functions pinctrl: mvebu: armada-38x: add nand functions pinctrl: mvebu: armada-38x: add sata functions pinctrl: mvebu: armada-xp: add dram functions pinctrl: mvebu: armada-xp: add nand rb function pinctrl: mvebu: armada-xp: add spi1 function pinctrl: mvebu: armada-39x: normalize ref clock naming pinctrl: mvebu: armada-xp: rename spi to spi0 pinctrl: mvebu: armada-370: align spi1 clock pin naming pinctrl: mvebu: armada-370: align VDD cpu-pd pin naming with datasheet ...
2015-06-10pinctrl: make pinctrl_register() return proper error codeMasahiro Yamada1-2/+2
Currently, pinctrl_register() just returns NULL on error, so the callers can not know the exact reason of the failure. Some of the pinctrl drivers return -EINVAL, some -ENODEV, and some -ENOMEM on error of pinctrl_register(), although the error code might be different from the real cause of the error. This commit reworks pinctrl_register() to return the appropriate error code and modifies all of the pinctrl drivers to use IS_ERR() for the error checking and PTR_ERR() for getting the error code. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Lee Jones <lee@kernel.org> Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Ray Jui <rjui@broadcom.com> Acked-by: Antoine Tenart <antoine.tenart@free-electrons.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Acked-by: Wei Chen <Wei.Chen@csr.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-04pinctrl: Remove .owner fieldFabio Estevam3-3/+0
platform_driver does not need to set the owner field, as it will be populated by the driver core, so just remove it. The semantic patch that makes this change is available in scripts/coccinelle/api/platform_no_drv_owner.cocci. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-02pinctrl: mediatek: Fix pinctrl register irq fail bug.Hongzhou Yang1-2/+2
Since mt6397 is no need to support interrupt controller, I judged "interrupt-controller" property to skip it last patch. But the if judgement should on the contrary, this is a bug. And find of_property_read_bool is better for this case. So using of_property_read_bool instead of of_find_property. Also fix bug of misuse pointer. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Reviewed-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-06-02pinctrl: mediatek: Fix bug of ies/smt setting for mt8173.Hongzhou Yang1-1/+9
Add ies/smt support for MSDC3. Also fix ies bug for pin 106 and 107. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-20pinctrl: mediatek: add OF dependency to MT6397Linus Walleij1-0/+1
X86_64 allmodconfig screams like so: warning: (PINCTRL_MT6397) selects PINCTRL_MTK_COMMON which has unmet direct dependencies (PINCTRL && (ARCH_MEDIATEK || COMPILE_TEST) && OF) So add OF to dependencies to shut up this warning. Cc: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-19pinctrl: mediatek: add pinctrl/GPIO/EINT driver for mt8127Yingjoe Chen4-0/+1684
MT8127 pinctrl/eint are similar to mt8135 and mt8173, add support for mt8127 using mediatek common pinctrl driver. Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-19pinctrl: mediatek: Add Pinctrl/GPIO driver for mt6397.Hongzhou Yang8-5/+524
Add mt6397 support using mediatek common pinctrl driver. mt6397 is a PMIC, and pinctrl/GPIO is part of 6397 chip. Pinctrl/GPIO driver should obtain regmap from PMIC, so adding this support to common code. Also, mt6397 is no need to support interrupt controller, so changing common code to skip it. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-19pinctrl: mediatek: add ies/smt control to common code.Hongzhou Yang3-116/+198
Input enable and smt setting have different register, modify code to fix it. Several mediatek soc use similar input enable/smt setting procedure as mt8173, some soc use generic input enable/smt setting, some soc has no input enable/smt setting. Adding common code to handle all those cases, so future soc driver can use it. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-19pinctrl: mediatek: add mtk_pctrl_spec_pull_set_samereg common codeYingjoe Chen3-121/+136
Several mediatek soc use similar pull setting procedure as mt8173, the pupd enable and resistance setting are in the same register. Add common code mtk_pctrl_spec_pull_set_samereg out of spec_pull_set in mt8173 to handle this case, so future soc driver can use it. Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-19pinctrl: mediatek: data struct optimize and remove unused memberYingjoe Chen2-14/+6
struct mtk_desc_pin.chip, mtk_pinctrl_devdata.invser_offset and mtk_pinctrl_devdata.chip_type are never used in code. Remove them. Some per-pin data are using int for pin number and offsets. Change to short and rearrange to reduce const data size. Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-05-04pinctrl: mediatek: mtk-common: initialize unmaskColin Ian King1-0/+2
cppcheck detected an uninitialized variable: [drivers/pinctrl/mediatek/pinctrl-mtk-common.c:897]: (error) Uninitialized variable: unmask unmask should be initialized to zero to ensure unmasking only occurs if a previous mask occurred. The current situation is that the unmask variable could contain any random garbage causing random unexpected unmasking. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-15pinctrl: fix allmodconfig noiseLinus Walleij1-0/+3
There was some mess in the dependencies in the pinctrl Kconfig for compile tests under allmodconfig. Mea Culpa. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-27pinctrl: constify of_device_id arrayFabian Frederick2-2/+6
of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick <fabf@skynet.be> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Maxime Coquelin <maxime.coquelin@st.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Acked-by: Lee Jones <lee@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: mt8135/mt8173: Constify of_device_id tableAxel Lin2-10/+6
Also make the table a bit compact. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: mtk-common: Use devm_kcalloc at appropriate placesAxel Lin1-10/+7
Prefer devm_kcalloc over devm_kzalloc with multiply. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: mt8135/mt8173: Fix build error due to missing include fileAxel Lin1-1/+1
Fix below build error: CC drivers/pinctrl/mediatek/pinctrl-mt8135.o In file included from drivers/pinctrl/mediatek/pinctrl-mt8135.c:24:0: drivers/pinctrl/mediatek/pinctrl-mtk-mt8135.h:19:32: fatal error: pinctrl-mtk-common.h: No such file or directory compilation terminated. make[3]: *** [drivers/pinctrl/mediatek/pinctrl-mt8135.o] Error 1 make[2]: *** [drivers/pinctrl/mediatek] Error 2 make[1]: *** [drivers/pinctrl] Error 2 make: *** [drivers] Error 2 Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: Adjust mt8173 pinctrl kconfigYingjoe Chen1-3/+8
ARM64 maintainer doesn't want to add MACH_* for each SoC. Adjust mt8173 pinctrl kconfig entry so user can manually select it. Also make PINCTRL_MT8135 selectable when COMPILE_TEST is enabled. Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: mtk-common: Remove kfreeAxel Lin1-4/+2
Remove erroneous kfree for memory allocated by devm_kzalloc Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: Fix include directiveGuenter Roeck1-1/+1
Fix the following build failure: In file included from drivers/pinctrl/mediatek/pinctrl-mt8135.c:24:0: drivers/pinctrl/mediatek/pinctrl-mtk-mt8135.h:19:32: fatal error: pinctrl-mtk-common.h: No such file or directory seen when building arm:multi_v7_defconfig. Fixes: 94097d89c145 ("pinctrl: mediatek: Add Pinctrl/GPIO driver for mt8135.") Cc: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: fix build errorHongzhou Yang1-2/+3
Due to pinconf_generic_parse_dt_config() API changes in pinctrl devel branch, add one parameter to fix build error. Also fix warning: drivers/pinctrl/mediatek/pinctrl-mtk-common.c:718:3: warning: too many arguments for format [-Wformat-extra-args] dev_err(&pdev->dev, "only support pins-are-numbered format\n", ret); ^ by removing extra parameter when calling dev_err in mtk_pctrl_init. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: emulate GPIO interrupt on both-edgesYingjoe Chen4-3/+83
MTK EINT does not support generating interrupt on both edges. Emulate this by changing edge polarity while enable irq, set types and interrupt handling. This follows an example of drivers/gpio/gpio-mxc.c. Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com> Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Acked-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18arm64: mediatek: Add Pinctrl/GPIO/EINT driver for mt8173.Hongzhou Yang6-0/+1704
Add mt8173 support using mediatek common pinctrl driver. MT8173 have a different ies_smt setting register than mt8135, so adding this support to common code. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: Add EINT support to MTK pinctrl driver.Maoguang Meng3-2/+435
MTK SoC support external interrupt(EINT) from most SoC pins. Add EINT support to pinctrl driver. Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com> Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-03-18pinctrl: mediatek: Add Pinctrl/GPIO driver for mt8135.Hongzhou Yang6-0/+3468
The mediatek SoCs have GPIO controller that handle both the muxing and GPIOs. The GPIO controller have pinmux, pull enable, pull select, direction and output high/low control. This driver include common driver and mt8135 part. The common driver include the pinctrl driver and GPIO driver. The mt8135 part contain its special device data. Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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