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path: root/drivers/gpio
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2011-10-13gpio/tegra: Convert to a platform deviceStephen Warren
v3: Make regs variable static. Remove empty init of tegra_gpio_banks. v2: Retrieve IRQ and memory addresses from resources instead of hard- coding them. Add back initialization of tegra_gpio_chip.of_node. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> [olof: switched probe routine to __devinit] Signed-off-by: Olof Johansson <olof@lixom.net>
2011-10-13gpio-pca953x: fix gpio_baseHartmut Knaack
gpio_base was set to 0 if no system platform data or open firmware platform data was provided. This led to conflicts, if any other gpiochip with a gpiobase of 0 was instantiated already. Setting it to -1 will automatically use the first one available. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-13gpio/omap: fix build error with certain OMAP1 configsJanusz Krzysztofik
With commit f64ad1a0e21a, "gpio/omap: cleanup _set_gpio_wakeup(), remove ifdefs", access to build time conditionally omitted 'suspend_wakeup' member of the 'gpio_bank' structure has been placed unconditionally in function _set_gpio_wakeup(), which is always built. This resulted in the driver compilation broken for certain OMAP1, i.e., non-OMAP16xx, configurations. Really required or not in previously excluded cases, define this structure member unconditionally as a fix. Tested with a custom OMAP1510 only configuration. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Acked-by: Kevin Hilman <khilman@ti.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-12gpio/samsung: Move SoC specific codes within macroTushar Behera
In drivers/gpio/gpio-samsung.c, there are certain structures and functions which are not getting used if the particular CPU is not selected. These code segments are moved under CPU specific macros to remove compilation warnings. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-12gpio/samsung: Fix incorrect gpio pull up/down callback for EXYNOS4Thomas Abraham
Some of the gpio chips of exynos4 are assigned a default gpio config without the exynos4 specific pull up/down callbacks which resulted in incorrect setting of pull up/down configuration. Fix this by adding two new exynos4 specific entries in the array of default configs with set_pull and get_pull callbacks set to exynos4 specific callbacks The new default gpio configs can then be used for exynos4 gpio chips. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-12gpio/samsung: only register available gpio banksPeter Korsgaard
Only register gpio banks provided by SoC instead of the maximum possible to lessen confusion, get rid of a warning from gpiolib and stop it from eating into the extra gpios for configs with S3C24XX_GPIO_EXTRA != 0. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-07Merge branch 'sirf/cleanup' into next/cleanupArnd Bergmann
2011-10-06gpio: langwell: ensure alternate function is clearedAdrian Hunter
Alternate function must be zero for the pin to act as a GPIO. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-pch: Support interrupt functionTomoya MORINAGA
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-pch: Save register value in suspend()Tomoya MORINAGA
Currently, when suspend is occurred, register im0/1 and gpio_use_sel are not saved. This patch modifies so that register im0/1 and gpio_use_sel are saved. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-pch: modify gpio_nums and maskTomoya MORINAGA
Currently, the number of GPIO pins is set fixed value(=12). Also PIN MASK is set as '0xfff'. However the pins differs by IOH. This patch sets the value correctly. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-pch: support ML7223 IOH n-BusTomoya MORINAGA
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-pch: add spinlock in suspend/resume processingTomoya MORINAGA
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-pch: Delete invalid "restore" code in suspend()Tomoya MORINAGA
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-ml-ioh: Fix suspend/resume issueTomoya MORINAGA
Currently, some registers are not saved in case changing to suspend state. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-ml-ioh: Support interrupt functionTomoya MORINAGA
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-05gpio-ml-ioh: Delete unnecessary codeTomoya MORINAGA
This register restore processing is unnecessary in suspend processing. (The restore processing is already in resume processing) Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-10-04Merge branch 'next/topic-gpio-samsung' into next-samsung-develKukjin Kim
2011-10-04gpio/samsung: correct pin configuration for S5PC100/S5PC110/EXYNOS4Marek Szyprowski
Commit 1b39d5f2cc introduced new common gpio driver for all Samsung GPIO SoCs. The new driver use wrong configuration setup for all gpio pins on S5PC100 and S5PV210 SoCs and external interrupt lines on Exynos4 SoCs. This patch fixes this issue. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-04gpio/samsung: fix GPIO interrupt registration for EXYNOS4 SoCsMarek Szyprowski
Commit 1b39d5f2cc introduced new common gpio driver for all Samsung GPIO SoCs. The new driver doesn't correctly register GPIO interrupts on Samsung Exynos4 SoCs. This is caused by a typo in define name. This patch fixes this issue. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-04gpio/samsung: fix broken configuration for EXYNOS4 GPIO banksMarek Szyprowski
Commit 1b39d5f2cc introduced new common gpio driver for all Samsung GPIO SoCs. The new driver doesn't work correctly on Samsung Exynos4 SoC. It fails to set configuration for all but external interrupt pins. This patch fixes this issue. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-01ARM: 7104/1: plat-pxa: break out GPIO driver specificsLinus Walleij
The <mach/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Cc: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-01ARM: 7103/1: plat-pxa: move PXA GPIO driver to GPIO subsystemLinus Walleij
As per example from the other ARM boards, push the PXA GPIO driver down to the GPIO subsystem so it can be consolidated. Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-10-01ARM: 7042/3: mach-ep93xx: break out GPIO driver specificsLinus Walleij
The <mach/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Cc: Ryan Mallon <rmallon@gmail.com> Acked-by: Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-26ARM: 7101/1: arm/tegra: Replace <mach/gpio.h> with <mach/gpio-tegra.h>Stephen Warren
This will eventually allow <mach/gpio.h> to be deleted. This mirrors LinusW's recent equivalent work on various other ARM platforms. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-22gpio: move mpc8xxx/512x gpio driver to drivers/gpioWolfram Sang
Move the driver to the place where it is expected to be nowadays. Also rename its CONFIG-name to match the rest and adapt the defconfigs. Finally, move selection of REQUIRE_GPIOLIB or WANTS_OPTIONAL_GPIOLIB to the platforms, because this option is per-platform and not per-driver. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Anatolij Gustschin <agust@denx.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-09-21gpio/mxc: add chained_irq_enter/exit() to mx3_gpio_irq_handler()Shawn Guo
The mx3_gpio_irq_handler() is also called on imx6q which has GIC as the primary interrupt controller. As GIC implements the fasteoi flow control, we need to add chained_irq_enter/exit() to mx3_gpio_irq_handler() for signaling EOI, otherwise system will hang whenever there is a gpio irq triggered. v2: use chained_irq_{enter,exit}() Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-09-21gpio/samsung: gpio-samsung.c to support Samsung GPIOsKukjin Kim
This patch adds support for Samsung GPIOs with one gpio driver and removes old GPIO drivers which are drivers/gpio-s3c24xx.c, gpio-s3c64xx.c, gpio-s5p64x0.c, gpio-s5pc100.c, gpio-s5pv210.c, gpio-exynos4.c, gpio-plat-samsung.c, plat-samsung/gpio-config.c and gpio.c to support each Samsung SoCs before. Because the gpio-samsung.c can replace old Samsung GPIO drivers. Basically, the gpio-samsung.c has been made by their merging and removing duplicated definitions. Note: gpio-samsung.c includes some SoC dependent codes and it will be replaced next time. Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> [kgene.kim@samsung.com: squash the removing and adding patches] [kgene.kim@samsung.com: fixes bug during to register of gpio_chips] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-21gpio/s5p64x0: move gpio driver into drivers/gpio/Kukjin Kim
Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-21gpio/s3c64xx: move gpio driver into drivers/gpio/Kukjin Kim
Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-21gpio/s3c24xx: move gpio driver into drivers/gpio/Kukjin Kim
Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-20gpio/nomadik: use genirq core to track enablementLinus Walleij
Currently the Nomadik GPIO driver tracks enabled/disabled interrupt status with a local variable, switch to using the interrupt core. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-09-20gpio/nomadik: disable clocks when unusedRabin Vincent
The GPIO clock is required for register access and interrupt detection. When interrupt detection is not required on any of the pin in a block, the block's clock can be disabled when the registers are not being accessed. Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> [Adjust for new IRQ chip core code, use only local functions] Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-09-15drivers/gpio/gpio-generic.c: fix build errorsRussell King
Building a kernel with hotplug disabled results in a link failure: `bgpio_remove' referenced in section `___ksymtab_gpl+bgpio_remove' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o This is because of bgpio_remove() is exported. It is illegal to export symbols which are discarded either at link time or as part of an init/exit section. Fix this by dropping the __devexit attributation from bgpio_remove(). Also drop the __devinit attributation from bgpio_init(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-08ARM: 7083/1: rewrite U300 GPIO to use gpiolibLinus Walleij
This rewrites the U300 GPIO so as to use gpiolib and struct gpio_chip instead of just generic GPIO, hiding all the platform specifics and passing in GPIO chip variant as platform data at runtime instead of the compiletime kludges. As a result <mach/gpio.h> is now empty for U300 and using just defaults. Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Debian kernel maintainers <debian-kernel@lists.debian.org> Cc: Arnaud Patard <arnaud.patard@rtp-net.org> Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-09-05ARM: 7074/1: gpio: davinci: eliminate unused variable warningsAxel Lin
Since commit 5093aec872e5be7a55d8dd2b639e8a3818dc19db "arm: davinci: Cleanup irq chip code", the variable 'mask' and 'g' are not being used. This patch eliminate below unused variable warnings: CC drivers/gpio/gpio-davinci.o drivers/gpio/gpio-davinci.c: In function 'gpio_irq_type': drivers/gpio/gpio-davinci.c:234: warning: unused variable 'mask' drivers/gpio/gpio-davinci.c:233: warning: unused variable 'g' Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-24ARM: 7053/1: gpio/tegra: Implement gpio_chip.to_irqStephen Warren
Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-24ARM: 7052/1: gpio/tegra: Remove use of irq_to_gpioStephen Warren
irq_to_gpio is being removed. Replace the only use of that API by the ARM Tegra sub-architecture. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-23gpio/omap: check return value from irq_alloc_generic_chipTodd Poynor
Ensure return value of irq_alloc_generic_chip() is checked before continuing on to use it. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-08-23gpio/omap: replace MOD_REG_BIT macro with static inlineKevin Hilman
This macro is ugly and confusing, especially since it passes in most arguments, but uses an implied 'base' from the caller. Replace it with an equivalent static inline. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-08-22ARM: 7049/1: mach-sa1100: move SA1100 GPIO driver to GPIO subsystemLinus Walleij
As per example from the other ARM boards, push the SA100 GPIO driver down to the GPIO subsystem so it can be consolidated. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7045/1: mach-lpc32xx: break out GPIO driver specificsLinus Walleij
The <mach/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Cc: Wolfram Sang <w.sang@pengutronix.de> Cc: Barry Song <bs14@csr.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7044/1: mach-lpc32xx: move LPC32XX GPIO driver to GPIO subsystemLinus Walleij
As per example from the other ARM boards, push the LPC32XX GPIO driver down to the GPIO subsystem so it can be consolidated. Cc: Wolfram Sang <w.sang@pengutronix.de> Cc: Barry Song <bs14@csr.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7041/1: gpio-ep93xx: hookup the to_irq callback in the driverLinus Walleij
Remove the ep93xx machine specific dependencies for gpio_to_irq() by hooking up the callback in the driver and using __gpio_to_irq. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7039/1: mach-davinci: move DaVinci TNET GPIO driver to GPIO subsystemLinus Walleij
As per example from the other ARM boards, push the DaVinci TNET GPIO driver down to the GPIO subsystem so it can be consolidated. Cc: Sekhar Nori <nsekhar@ti.com> Cc: Kevin Hilman <khilman@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7038/1: mach-davinci: move GPIO driver to GPIO subsystemLinus Walleij
As per example from the other ARM boards, push the DaVinci GPIO driver down to the GPIO subsystem so it can be consolidated. Cc: Sekhar Nori <nsekhar@ti.com> Cc: Kevin Hilman <khilman@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7036/1: mach-ks8695: break out GPIO driver specificsLinus Walleij
The <mach/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Cc: zeal <zealcook@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Daniel Silverstone <dsilvers@simtec.co.uk> Acked-by: Simtec Linux Team <linux@simtec.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7035/1: mach-ks8695: move GPIO driver to GPIO subsystemLinus Walleij
As per example from the other ARM boards, push the KS8695 GPIO driver down to the GPIO subsystem so it can be consolidated. Cc: zeal <zealcook@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Acked-by: Daniel Silverstone <dsilvers@simtec.co.uk> Acked-by: Simtec Linux Team <linux@simtec.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7033/1: mach-u300: break out GPIO driver specificsLinus Walleij
The <mach/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-08-22ARM: 7032/1: plat-nomadik: break out GPIO driver specificsLinus Walleij
The <[plat|mach]/gpio.h> file is included from upper directories and deal with generic GPIO and gpiolib stuff. Break out the platform and driver specific defines and functions into its own header file. Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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