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2016-07-22pinctrl: iproc: Add NSP and Stingray GPIO supportRay Jui1-7/+111
The iProc GPIO controller is shared among multiple iProc based SoCs. In the NSP integration, the drive strength pinctrl function is disabled. In the integration of Stingray, pinctrl is handled by another block and this GPIO controller is solely used as a GPIO controller, and therefore should not be registered to the pinconf framework This patch introduces new SoC specific compatible strings "brcm,iproc-nsp-gpio" for NSP with drive strength feature disabled and "brcm,iproc-stingray-gpio" for Stingray with all PINCONF features disabled This patch is developed based on the initial work from Yendapally Reddy Dhananjaya <yendapally.reddy@broadcom.com> who attempted to disable drive strength configuration for the iProc based NSP chip. In addition, Pramod Kumar <pramod.kumar@broadcom.com> also contributed to make the support more generic across all currently supported PINCONF functions in the iProc GPIO/PINCONF driver Signed-off-by: Pramod Kumar <pramodku@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-22pinctrl: bcm: add OF dependenciesArnd Bergmann1-0/+2
Building without CONFIG_OF gives us these warnings for the broadcom pinctrl drivers: drivers/pinctrl/bcm/pinctrl-nsp-mux.c:356:20: error: 'pinconf_generic_dt_node_to_map_group' undeclared here (not in a function) drivers/pinctrl/bcm/pinctrl-cygnus-mux.c:739:20: error: 'pinconf_generic_dt_node_to_map_group' undeclared here (not in a function) The function is only available when CONFIG_OF is set, so we should add a Kconfig dependency for both drivers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: cc4fa83f66e9 ("pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC") Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-22pinctrl: ns2: remove redundant dev_err call in ns2_pinmux_probe()Wei Yongjun1-6/+2
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-11pinctrl: nsp: remove redundant dev_err call in nsp_pinmux_probe()Wei Yongjun1-6/+2
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-07-11pinctrl: ns2: fix return value check in ns2_pinmux_probe()Wei Yongjun1-2/+2
In case of error, the function pinctrl_register() returns NULL not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-06-29pinctrl: nsp: add pinmux driver support for Broadcom NSP SoCYendapally Reddy Dhananjaya Reddy3-0/+660
This adds the initial support of the Broadcom NSP pinmux driver. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-06-08pinctrl: nsp-gpio: fix non-static functionsBen Dooks1-2/+4
Fixup warnings from functions that are not exported and therefore should be marked static. Fixes: drivers/pinctrl/bcm/pinctrl-nsp-gpio.c:461:5: warning: symbol 'nsp_pin_config_group_get' was not declared. Should it be static? drivers/pinctrl/bcm/pinctrl-nsp-gpio.c:467:5: warning: symbol 'nsp_pin_config_group_set' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-09pinctrl: ns2: rename pinctrl_utils_dt_free_mapArnd Bergmann1-1/+1
A conflict of two patches caused a build error when a function got renamed but a new user appeared in the other patch: drivers/pinctrl/bcm/pinctrl-ns2-mux.c:540:17: error: 'pinctrl_utils_dt_free_map' undeclared here (not in a function) .dt_free_map = pinctrl_utils_dt_free_map, ^~~~~~~~~~~~~~~~~~~~~~~~~ This renames the new user of pinctrl_utils_dt_free_map accordingly. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: d32f7fd3bbc3 ("pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map") Fixes: b5aa1006e4a9 ("pinctrl: ns2: add pinmux driver support for Broadcom NS2 SoC") Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-30pinctrl: ns2: add pinmux driver support for Broadcom NS2 SoCYendapally Reddy Dhananjaya Reddy3-0/+1131
This adds the initial support of the Broadcom NS2 pinmux driver Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-21pinctrl: nsp-gpio: Use devm_pinctrl_register() for pinctrl registrationLaxman Dewangan1-1/+1
Use devm_pinctrl_register() for pin control registration. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-21pinctrl: iproc-gpio: Use devm_pinctrl_register() for pinctrl registrationLaxman Dewangan1-10/+2
Use devm_pinctrl_register() for pin control registration and clean the error path. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-21pinctrl: cygnus-mux: Use devm_pinctrl_register() for pinctrl registrationLaxman Dewangan1-1/+1
Use devm_pinctrl_register() for pin control registration. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-21pinctrl: bcm2835: Use devm_pinctrl_register() for pinctrl registrationLaxman Dewangan1-2/+1
Use devm_pinctrl_register() for pin control registration. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Ray Jui <rjui@broadcom.com> Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: bcm-kernel-feedback-list@broadcom.com Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-21pinctrl: bcm281xx: Use devm_pinctrl_register() for pinctrl registrationLaxman Dewangan1-3/+1
Use devm_pinctrl_register() for pin control registration. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Ray Jui <rjui@broadcom.com> Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: bcm-kernel-feedback-list@broadcom.com Acked-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-01pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_mapIrina Tirdea4-4/+4
Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map, since it does not depend on device tree despite the current name. This will enforce a consistent naming in pinctr-utils.c and will make it clear it can be called from outside device tree (e.g. from ACPI handling code). Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-01pinctrl: bcm2835: Implement get_direction callbackStefan Wahren1-0/+13
Implement gpio_chip's get_direction() callback, that lets other drivers get particular GPIOs direction using gpiod_get_direction(). Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-03-17Merge tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpioLinus Torvalds1-19/+14
Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for kernel v4.6. There is quite a lot of interesting stuff going on. The patches to other subsystems and arch-wide are ACKed as far as possible, though I consider things like per-arch <asm/gpio.h> as essentially a part of the GPIO subsystem so it should not be needed. Core changes: - The gpio_chip is now a *real device*. Until now the gpio chips were just piggybacking the parent device or (gasp) floating in space outside of the device model. We now finally make GPIO chips devices. The gpio_chip will create a gpio_device which contains a struct device, and this gpio_device struct is kept private. Anything that needs to be kept private from the rest of the kernel will gradually be moved over to the gpio_device. - As a result of making the gpio_device a real device, we have added resource management, so devm_gpiochip_add_data() will cut down on overhead and reduce code lines. A huge slew of patches convert almost all drivers in the subsystem to use this. - Building on making the GPIO a real device, we add the first step of a new userspace ABI: the GPIO character device. We take small steps here, so we first add a pure *information* ABI and the tool "lsgpio" that will list all GPIO devices on the system and all lines on these devices. We can now discover GPIOs properly from userspace. We still have not come up with a way to actually *use* GPIOs from userspace. - To encourage people to use the character device for the future, we have it always-enabled when using GPIO. The old sysfs ABI is still opt-in (and can be used in parallel), but is marked as deprecated. We will keep it around for the foreseeable future, but it will not be extended to cover ever more use cases. Cleanup: - Bjorn Helgaas removed a whole slew of per-architecture <asm/gpio.h> includes. This dates back to when GPIO was an opt-in feature and no shared library even existed: just a header file with proper prototypes was provided and all semantics were up to the arch to implement. These patches make the GPIO chip even more a proper device and cleans out leftovers of the old in-kernel API here and there. Still some cruft is left but it's very little now. - There is still some clamping of return values for .get() going on, but we now return sane values in the vast majority of drivers and the errorpath is sanitized. Some patches for powerpc, blackfin and unicore still drop in. - We continue to switch the ARM, MIPS, blackfin, m68k local GPIO implementations to use gpiochip_add_data() and cut down on code lines. - MPC8xxx is converted to use the generic GPIO helpers. - ATH79 is converted to use the generic GPIO helpers. New drivers: - WinSystems WS16C48 - Acces 104-DIO-48E - F81866 (a F7188x variant) - Qoric (a MPC8xxx variant) - TS-4800 - SPI serializers (pisosr): simple 74xx shift registers connected to SPI to obtain a dirt-cheap output-only GPIO expander. - Texas Instruments TPIC2810 - Texas Instruments TPS65218 - Texas Instruments TPS65912 - X-Gene (ARM64) standby GPIO controller" * tag 'gpio-v4.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (194 commits) Revert "Share upstreaming patches" gpio: mcp23s08: Fix clearing of interrupt. gpiolib: Fix comment referring to gpio_*() in gpiod_*() gpio: pca953x: Fix pca953x_gpio_set_multiple() on 64-bit gpio: xgene: Fix kconfig for standby GIPO contoller gpio: Add generic serializer DT binding gpio: uapi: use 0xB4 as ioctl() major gpio: tps65912: fix bad merge Revert "gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free" gpio: omap: drop dev field from gpio_bank structure gpio: mpc8xxx: Slightly update the code for better readability gpio: mpc8xxx: Remove *read_reg and *write_reg from struct mpc8xxx_gpio_chip gpio: mpc8xxx: Fixup setting gpio direction output gpio: mcp23s08: Add support for mcp23s18 dt-bindings: gpio: altera: Fix altr,interrupt-type property gpio: add driver for MEN 16Z127 GPIO controller gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free gpio: timberdale: Switch to devm_ioremap_resource() gpio: ts4800: Add IMX51 dependency gpiolib: rewrite gpiodev_add_to_list ...
2016-03-08pinctrl-bcm2835: Fix cut-and-paste error in "pull" parsingPhil Elwell1-1/+1
The DT bindings for pinctrl-bcm2835 allow both the function and pull to contain either one entry or one per pin. However, an error in the DT parsing can cause failures if the number of pulls differs from the number of functions. Cc: stable@vger.kernel.org Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Phil Elwell <phil@raspberrypi.org> Reviewed-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-02-19pinctrl: cygnus-gpio: use gpiochip data pointerLinus Walleij1-19/+14
This makes the driver use the data pointer added to the gpio_chip to store a pointer to the state container instead of relying on container_of(). Cc: bcm-kernel-feedback-list@broadcom.com Cc: Scott Branden <sbranden@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Acked-by: Ray Jui <rjui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-01-17Merge tag 'gpio-v4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpioLinus Torvalds3-20/+15
Pull GPIO updates from Linus Walleij: "Here is the bulk of GPIO changes for v4.5. Notably there are big refactorings mostly by myself, aimed at getting the gpio_chip into a shape that makes me believe I can proceed to preserve state for a proper userspace ABI (character device) that has already been proposed once, but resulted in the feedback that I need to go back and restructure stuff. So I've been restructuring stuff. On the way I ran into brokenness (return code from the get_value() callback) and had to fix it. Also, refactored generic GPIO to be simpler. Some of that is still waiting to trickle down from the subsystems all over the kernel that provide random gpio_chips, I've touched every single GPIO driver in the kernel now, oh man I didn't know I was responsible for so much... Apart from that we're churning along as usual. I took some effort to test and retest so it should merge nicely and we shook out a couple of bugs in -next. Infrastructural changes: - In struct gpio_chip, rename the .dev node to .parent to better reflect the fact that this is not the GPIO struct device abstraction. We will add that soon so this would be totallt confusing. - It was noted that the driver .get_value() callbacks was sometimes reporting negative -ERR values to the gpiolib core, expecting them to be propagated to consumer gpiod_get_value() and gpio_get_value() calls. This was not happening, so as there was a mess of drivers returning negative errors and some returning "anything else than zero" to indicate that a line was active. As some would have bit 31 set to indicate "line active" it clashed with negative error codes. This is fixed by the largeish series clamping values in all drivers with !!value to [0,1] and then augmenting the code to propagate error codes to consumers. (Includes some ACKed patches in other subsystems.) - Add a void *data pointer to struct gpio_chip. The container_of() design pattern is indeed very nice, but we want to reform the struct gpio_chip to be a non-volative, stateless business, and keep states internal to the gpiolib to be able to hold on to the state when adding a proper userspace ABI (character device) further down the road. To achieve this, drivers need a handle at the internal state that is not dependent on their struct gpio_chip() so we add gpiochip_add_data() and gpiochip_get_data() following the pattern of many other subsystems. All the "use gpiochip data pointer" patches transforms drivers to this scheme. - The Generic GPIO chip header has been merged into the general <linux/gpio/driver.h> header, and the custom header for that removed. Instead of having a separate mm_gpio_chip struct for these generic drivers, merge that into struct gpio_chip, simplifying the code and removing the need for separate and confusing includes. Misc improvements: - Stabilize the way GPIOs are looked up from the ACPI legacy specification. - Incremental driver features for PXA, PCA953X, Lantiq (patches from the OpenWRT community), RCAR, Zynq, PL061, 104-idi-48 New drivers: - Add a GPIO chip to the ALSA SoC AC97 driver. - Add a new Broadcom NSP SoC driver (this lands in the pinctrl dir, but the branch is merged here too to account for infrastructural changes). - The sx150x driver now supports the sx1502" * tag 'gpio-v4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (220 commits) gpio: generic: make bgpio_pdata always visible gpiolib: fix chip order in gpio list gpio: mpc8xxx: Do not use gpiochip_get_data() in mpc8xxx_gpio_save_regs() gpio: mm-lantiq: Do not use gpiochip_get_data() in ltq_mm_save_regs() gpio: brcmstb: Allow building driver for BMIPS_GENERIC gpio: brcmstb: Set endian flags for big-endian MIPS gpio: moxart: fix build regression gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs() leds: pca9532: use gpiochip data pointer leds: tca6507: use gpiochip data pointer hid: cp2112: use gpiochip data pointer bcma: gpio: use gpiochip data pointer avr32: gpio: use gpiochip data pointer video: fbdev: via: use gpiochip data pointer gpio: pch: Optimize pch_gpio_get() Revert "pinctrl: lantiq: Implement gpio_chip.to_irq" pinctrl: nsp-gpio: use gpiochip data pointer pinctrl: vt8500-wmt: use gpiochip data pointer pinctrl: exynos5440: use gpiochip data pointer pinctrl: at91-pio4: use gpiochip data pointer ...
2016-01-11Merge tag 'pinctrl-v4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds5-202/+958
Pull pin control updates from Linus Walleij: "This is the bulk of pin control patches for the v4.5 series. Notably I have a patch to driver core from Stephen Boyd in the pull request, this has been ACKed by Greg so it should be OK. The internal API needed some tweaking to allow modular Qualcomm pin controllers. There is a bit of development history in here but it should all add up nicely and has boiled in linux-next. For example I merged in v4.4-rc5 to get rid of some nasty merge conflicts. Summary: - New drivers: - PXA2xx pin controller support - Broadcom NSP pin controller support - New subdrivers: - Samsung EXYNOS5410 support - Qualcomm MSM8996 support - Qualcomm PM8994 support - Qualcomm PM8994 MPP support - Allwinner sunxi H3 support - Allwinner sunxi A80 support - Rockchip RK3228 support - Rename the Cygnus pinctrl driver to "iproc" as it is more generic than was originally thought. - A bunch of Lantiq/Xway updates especially from the OpenWRT people. - Several refactorings for the Super-H SH PFC pin controllers. Adding SCIF_CLK support. - Several fixes to the Atlas 7 driver. - Various fixes all over the place" * tag 'pinctrl-v4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (91 commits) pinctrl: mediatek: Modify pinctrl bindings for mt2701 Revert "pinctrl: qcom: make PMIC drivers bool" pinctrl: qcom: Use platform_irq_count() instead of of_irq_count() driver-core: platform: Add platform_irq_count() pinctrl: lantiq: 2 pins have the wrong mux list pinctrl: qcom: make PMIC drivers bool pinctrl: nsp-gpio: forever loop in nsp_gpio_get_strength() pinctrl: mediatek: convert to arch_initcall pinctrl: bcm2835: Fix memory leak in error path pinctrl: mediatek: add missing of_node_put pinctrl: rockchip: add missing of_node_put pinctrl: sh-pfc: add missing of_node_put pinctrl: sirf: add missing of_node_put pinctrl-tegra: add missing of_node_put pinctrl: sunxi: Add A80 special pin controller pinctrl: bcm/cygnys/iproc: fixup rebase issue pinctrl: fixup problematic flag MAINTAINERS: Add co-maintainer for Renesas Pin Controllers pinctrl: sh-pfc: r8a7791: add EtherAVB pin groups pinctrl: sh-pfc: r8a7795: Add SATA support ...
2016-01-05pinctrl: nsp-gpio: use gpiochip data pointerLinus Walleij1-12/+7
This makes the driver use the data pointer added to the gpio_chip to store a pointer to the state container instead of relying on container_of(). Cc: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-01-05pinctrl: bcm2835: use gpiochip data pointerLinus Walleij1-5/+5
This makes the driver use the data pointer added to the gpio_chip to store a pointer to the state container instead of relying on container_of(). Cc: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-24pinctrl: nsp-gpio: forever loop in nsp_gpio_get_strength()Dan Carpenter1-1/+2
There is a signedness bug here so the loop will never exit. Fixes: 8bfcbbbcabe0 ('pinctrl: nsp: add gpio-a driver support for Broadcom NSP SoC') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-22pinctrl: bcm2835: Fix memory leak in error pathStefan Wahren1-1/+1
In case of an invalid pin value bcm2835_pctl_dt_node_to_map() would leak the pull configs of already assigned pins. So avoid this by calling the free map function in error case. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Fixes: e1b2dc70cd5b ("pinctrl: add bcm2835 driver") Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-21pinctrl: fixup problematic flagLinus Walleij1-1/+0
This removes the set_irq_flags() call that unfortunately slipped into the BCM NSP driver. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-21pinctrl: bcm/cygnys/iproc: fixup rebase issueLinus Walleij1-1/+1
Somehow this variable name screwed up in some rebase, fixed it. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reported-by: Pramod Kumar <pramodku@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-21Merge tag 'v4.4-rc6' into develLinus Walleij1-6/+7
Linux 4.4-rc6
2015-12-17pinctrl: fixup problematic flagLinus Walleij1-1/+0
This removes the set_irq_flags() call that unfortunately slipped into the BCM NSP driver. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-14pinctrl: bcm2835: Fix initial value for direction_outputStefan Wahren1-6/+7
Currently the provided initial value for bcm2835_gpio_direction_output has no effect. So fix this issue by changing the value before changing the GPIO direction. As a result we need to move the function below bcm2835_gpio_set. Suggested-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Fixes: e1b2dc70cd5b ("pinctrl: add bcm2835 driver") Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-10pinctrl: bcm: Default PINCTRL_BCM281XX to y for ARCH_BCM_MOBILEFlorian Fainelli1-0/+1
This driver is mandatory for proper operation on the platforms covered by the ARCH_BCM_MOBILE Kconfig symbol, make sure we do that driver on for these platforms. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-10pinctrl: nsp-gpio: fix up parent attributeLinus Walleij1-1/+1
The .dev field has been renamed .parent in the GPIO tree. Fix it up. Cc: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-10Merge branch 'bcm-nsp' of ../linux-pinctrl into develLinus Walleij3-0/+767
2015-12-10Merge branch 'bcm-nsp' into develLinus Walleij3-0/+767
2015-12-10pinctrl: nsp: add gpio-a driver support for Broadcom NSP SoCYendapally Reddy Dhananjaya Reddy3-0/+767
This adds the initial support of the Broadcom NSP gpio-a driver. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yrdreddy@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-30pinctrl: Rename gpio driver from cygnus to iprocPramod Kumar3-11/+24
Rename gpio driver file name from pinctrl-cygnus-gpio.c to pinctrl-iproc-gpio.c to make it more generic so that all iproc based future SoCs using the same gpio block could use this driver. Signed-off-by: Pramod Kumar <pramodku@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-30gpio: Rename func/macro/var to IP-block,iprocPramod Kumar1-152/+154
Change functions, macros and variables name from cygnus to IP block, iproc, so that it could be used in all iproc based future SoCs having same GPIO controller block. Signed-off-by: Pramod Kumar <pramodku@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-30pinctrl: Add new compatible string to GPIO controller driverPramod Kumar1-0/+1
This compatible string should be used for all new iproc based future SoCs having the same GPIO controller hardware. Signed-off-by: Pramod Kumar <pramodku@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-30pinctrl: use ngpios propety from DTPramod Kumar1-36/+9
Since identical hardware is used in several instances and every instance will have different in-use pins. Hence extracting this number from DT via "ngpios" property. Signed-off-by: Pramod Kumar <pramodku@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-19gpio: change member .dev to .parentLinus Walleij2-5/+5
The name .dev in a struct is normally reserved for a struct device that is let us say a superclass to the thing described by the struct. struct gpio_chip stands out by confusingly using a struct device *dev to point to the parent device (such as a platform_device) that represents the hardware. As we want to give gpio_chip:s real devices, this is not working. We need to rename this member to parent. This was done by two coccinelle scripts, I guess it is possible to combine them into one, but I don't know such stuff. They look like this: @@ struct gpio_chip *var; @@ -var->dev +var->parent and: @@ struct gpio_chip var; @@ -var.dev +var.parent and: @@ struct bgpio_chip *var; @@ -var->gc.dev +var->gc.parent Plus a few instances of bgpio that I couldn't figure out how to teach Coccinelle to rewrite. This patch hits all over the place, but I *strongly* prefer this solution to any piecemal approaches that just exercise patch mechanics all over the place. It mainly hits drivers/gpio and drivers/pinctrl which is my own backyard anyway. Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Rafał Miłecki <zajec5@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Alek Du <alek.du@intel.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-17pinctrl: Delete unnecessary checksMarkus Elfring1-2/+1
The pinctrl_unregister() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-02Merge tag 'gpio-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpioLinus Torvalds1-12/+2
Pull GPIO updates from Linus Walleij: "Here is the bulk of GPIO changes for the v4.4 development cycle. The only changes hitting outside drivers/gpio are in the pin control subsystem and these seem to have settled nicely in linux-next. Development mistakes and catfights are nicely documented in the reverts as you can see. The outcome of the ABI fight is that we're working on a chardev ABI for GPIO now, where hope to show results for the v4.5 kernel. Summary of changes: GPIO core: - Define and handle flags for open drain/open collector and open source/open emitter, also know as "single-ended" configurations. - Generic request/free operations that handle calling out to the (optional) pin control backend. - Some refactoring related to an ABI change that did not happen, yet provide useful. - Added a real-time compliance checklist. Many GPIO chips have irqchips, and need to think this over with the RT patches going upstream. - Restructure, fix and clean up Kconfig menus a bit. New drivers: - New driver for AMD Promony. - New driver for ACCES 104-IDIO-16, a port-mapped I/O card, ISA-style. Very retro. Subdriver changes: - OMAP changes to handle real time requirements. - Handle trigger types for edge and level IRQs on PL061 properly. As this hardware is very common it needs to set a proper example for others to follow. - Some container_of() cleanups. - Delete the unused MSM driver in favor of the driver that is embedded inside the pin control driver. - Cleanup of the ath79 GPIO driver used by many, many OpenWRT router targets. - A consolidated IT87xx driver replacing the earlier very specific IT8761e driver. - Handle the TI TCA9539 in the PCA953x driver. Also handle ACPI devices in this subdriver. - Drop xilinx arch dependencies as these FPGAs seem to profilate over a few different architectures. MIPS and ARM come to mind" * tag 'gpio-v4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (57 commits) gpio: fix up SPI submenu gpio: drop surplus I2C dependencies gpio: drop surplus X86 dependencies gpio: dt-bindings: document the official use of "ngpios" gpio: MAINTAINERS: Add an entry for the ATH79 GPIO driver gpio / ACPI: Allow shared GPIO event to be read via operation region gpio: group port-mapped I/O drivers in a menu gpio: Add ACCES 104-IDIO-16 driver maintainer entry gpio: zynq: Document interrupt-controller DT binding gpio: xilinx: Drop architecture dependencies gpio: generic: Revert to old error handling in bgpio_map gpio: add a real time compliance notes Revert "gpio: add a real time compliance checklist" gpio: Add GPIO support for the ACCES 104-IDIO-16 gpio: driver for AMD Promontory gpio: xlp: Convert to use gpiolib irqchip helpers gpio: add a real time compliance checklist gpio/xilinx: enable for MIPS gpiolib: Add and use OF_GPIO_SINGLE_ENDED flag gpiolib: Split GPIO flags parsing and GPIO configuration ...
2015-10-27pinctrl: cygnus: Remove GPIO to Pinctrl pin mapping from driverPramod Kumar1-128/+3
Remove gpio to pinctrl pin mapping code from driver and address this through standard property "gpio-ranges". Signed-off-by: Pramod Kumar <pramodku@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-10-16pinctrl: replace trivial implementations of gpio_chip request/freeJonas Gorski1-12/+2
Replace all trivial request/free callbacks that do nothing but call into pinctrl code with the generic versions. Signed-off-by: Jonas Gorski <jogo@openwrt.org> Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Eric Anholt <eric@anholt.net> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Baruch Siach <baruch@tkos.co.il> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Acked-by: Lee Jones <lee@kernel.org> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner1-1/+1
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
2015-09-04Merge tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds1-3/+2
Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for the v4.3 development cycle. Like with GPIO it's a lot of stuff. If my subsystems are any sign of the overall tempo of the kernel v4.3 will be a gigantic diff. [ It looks like 4.3 is calmer than 4.2 in most other subsystems, but we'll see - Linus ] Core changes: - It is possible configure groups in debugfs. - Consolidation of chained IRQ handler install/remove replacing all call sites where irq_set_handler_data() and irq_set_chained_handler() were done in succession with a combined call to irq_set_chained_handler_and_data(). This series was created by Thomas Gleixner after the problem was observed by Russell King. - Tglx also made another series of patches switching __irq_set_handler_locked() for irq_set_handler_locked() which is way cleaner. - Tglx also wrote a good bunch of patches to make use of irq_desc_get_xxx() accessors and avoid looking up irq_descs from IRQ numbers. The goal is to get rid of the irq number from the handlers in the IRQ flow which is nice. Driver feature enhancements: - Power management support for the SiRF SoC Atlas 7. - Power down support for the Qualcomm driver. - Intel Cherryview and Baytrail: switch drivers to use raw spinlocks in IRQ handlers to play nice with the realtime patch set. - Rework and new modes handling for Qualcomm SPMI-MPP. - Pinconf power source config for SH PFC. New drivers and subdrivers: - A new driver for Conexant Digicolor CX92755. - A new driver for UniPhier PH1-LD4, PH1-Pro4, PH1-sLD8, PH1-Pro5, ProXtream2 and PH1-LD6b SoC pin control support. - Reverse-egineered the S/PDIF settings for the Allwinner sun4i driver. - Support for Qualcomm Technologies QDF2xxx ARM64 SoCs - A new Freescale i.mx6ul subdriver. Cleanup: - Remove platform data support in a number of SH PFC subdrivers" * tag 'pinctrl-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (95 commits) pinctrl: at91: fix null pointer dereference pinctrl: mediatek: Implement wake handler and suspend resume pinctrl: mediatek: Fix multiple registration issue. pinctrl: sh-pfc: r8a7794: add USB pin groups pinctrl: at91: Use generic irq_{request,release}_resources() pinctrl: cherryview: Use raw_spinlock for locking pinctrl: baytrail: Use raw_spinlock for locking pinctrl: imx6ul: Remove .owner field pinctrl: zynq: Fix typos in smc0_nand_grp and smc0_nor_grp pinctrl: sh-pfc: Implement pinconf power-source param for voltage switching clk: rockchip: add pclk_pd_pmu to the list of rk3288 critical clocks pinctrl: sun4i: add spdif to pin description. pinctrl: atlas7: clear ugly branch statements for pull and drivestrength pinctrl: baytrail: Serialize all register access pinctrl: baytrail: Drop FSF mailing address pinctrl: rockchip: only enable gpio clock when it setting pinctrl/mediatek: fix spelling mistake in dev_err error message pinctrl: cherryview: Serialize all register access pinctrl: UniPhier: PH1-Pro5: add I2C ch6 pin-mux setting pinctrl: nomadik: reflect current input value ...
2015-07-28pinctrl: kill off set_irq_flags usageRob Herring1-1/+0
set_irq_flags is ARM specific with custom flags which have genirq equivalents. Convert drivers to use the genirq interfaces directly, so we can kill off set_irq_flags. The translation of flags is as follows: IRQF_VALID -> !IRQ_NOREQUEST IRQF_PROBE -> !IRQ_NOPROBE IRQF_NOAUTOEN -> IRQ_NOAUTOEN For IRQs managed by an irqdomain, the irqdomain core code handles clearing and setting IRQ_NOREQUEST already, so there is no need to do this in .map() functions and we can simply remove the set_irq_flags calls. Some users also modify IRQ_NOPROBE and this has been maintained although it is not clear that is really needed. There appears to be a great deal of blind copy and paste of this code. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Lee Jones <lee@kernel.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Kukjin Kim <kgene@kernel.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: linux-gpio@vger.kernel.org Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-20pinctrl: bcm2835: Clear the event latch register when disabling interruptsJonathan Bell1-0/+2
It's possible to hit a race condition if interrupts are generated on a GPIO pin when the IRQ line in question is being disabled. If the interrupt is freed, bcm2835_gpio_irq_disable() is called which disables the event generation sources (edge, level). If an event occurred between the last disabling of hard IRQs and the write to the event source registers, a bit would be set in the GPIO event detect register (GPEDSn) which goes unacknowledged by bcm2835_gpio_irq_handler() so Linux complains loudly. There is no per-GPIO mask register, so when disabling GPIO interrupts write 1 to the relevant bit in GPEDSn to clear out any stale events. Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-17pinctrl/bcm2835: Use irq_set_handler_locked()Thomas Gleixner1-2/+2
Use irq_set_handler_locked() as it avoids a redundant lookup of the irq descriptor. Search and replacement was done with coccinelle. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org
2015-06-24Merge tag 'pinctrl-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds4-10/+10
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 ...
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