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path: root/drivers/gpio
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2013-11-11Merge tag 'cleanup-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Olof Johansson: "This branch contains code cleanups, moves and removals for 3.13. Qualcomm msm targets had a bunch of code removal for legacy non-DT platforms. Nomadik saw more device tree conversions and cleanup of old code. Tegra has some code refactoring, etc. One longish patch series from Sebastian Hasselbarth changes the init_time hooks and tries to use a generic implementation for most platforms, since they were all doing more or less the same things. Finally the "shark" platform is removed in this release. It's been abandoned for a while and nobody seems to care enough to keep it around. If someone comes along and wants to resurrect it, the removal can easily be reverted and code brought back. Beyond this, mostly a bunch of removals of stale content across the board, etc" * tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (79 commits) ARM: gemini: convert to GENERIC_CLOCKEVENTS ARM: EXYNOS: remove CONFIG_MACH_EXYNOS[4, 5]_DT config options ARM: OMAP3: control: add API for setting IVA bootmode ARM: OMAP3: CM/control: move CM scratchpad save to CM driver ARM: OMAP3: McBSP: do not access CM register directly ARM: OMAP3: clock: add API to enable/disable autoidle for a single clock ARM: OMAP2: CM/PM: remove direct register accesses outside CM code MAINTAINERS: Add patterns for DTS files for AT91 ARM: at91: remove init_machine() as default is suitable ARM: at91/dt: split sama5d3 peripheral definitions ARM: at91/dt: split sam9x5 peripheral definitions ARM: Remove temporary sched_clock.h header ARM: clps711x: Use linux/sched_clock.h MAINTAINERS: Add DTS files to patterns for Samsung platform ARM: EXYNOS: remove unnecessary header inclusions from exynos4/5 dt machine file ARM: tegra: fix ARCH_TEGRA_114_SOC select sort order clk: nomadik: fix missing __init on nomadik_src_init ARM: drop explicit selection of HAVE_CLK and CLKDEV_LOOKUP ARM: S3C64XX: Kill CONFIG_PLAT_S3C64XX ASoC: samsung: Use CONFIG_ARCH_S3C64XX to check for S3C64XX support ...
2013-10-28Merge tag 'omap-for-v3.13/cm-scm-cleanup-signed' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup From Paul Walmsley <paul@pwsan.com> via Tony Lindgren: Move some of the OMAP2+ CM and System Control Module direct register accesses into CM- and System Control Module-specific "drivers" underneath arch/arm/mach-omap2/. This is a prerequisite for moving this code out of arch/arm/mach-omap2/ into drivers/. Basic test logs are available here: http://www.pwsan.com/omap/testlogs/cm_scm_cleanup_a_v3.13/20131019101809/ * tag 'omap-for-v3.13/cm-scm-cleanup-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP3: control: add API for setting IVA bootmode ARM: OMAP3: CM/control: move CM scratchpad save to CM driver ARM: OMAP3: McBSP: do not access CM register directly ARM: OMAP3: clock: add API to enable/disable autoidle for a single clock ARM: OMAP2: CM/PM: remove direct register accesses outside CM code + Linux 3.12-rc4 Signed-off-by: Olof Johansson <olof@lixom.net>
2013-10-27Merge tag 'samsung-cleanup' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup From Kukjin Kim: Samsung Cleanup for v3.13 - remove unnecessary config options and header inclusions - use CONFIG_ARCH_S3C64XX instead of PLAT_S3C64XX * tag 'samsung-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: EXYNOS: remove CONFIG_MACH_EXYNOS[4, 5]_DT config options ARM: EXYNOS: remove unnecessary header inclusions from exynos4/5 dt machine file ARM: S3C64XX: Kill CONFIG_PLAT_S3C64XX ASoC: samsung: Use CONFIG_ARCH_S3C64XX to check for S3C64XX support s3c-camif: Use CONFIG_ARCH_S3C64XX to check for S3C64XX support gpio: samsung: Use CONFIG_ARCH_S3C64XX to check for S3C64XX support ARM: S3C64XX: Move if ARCH_S3C64XX statement into mach-s3c64xx Signed-off-by: Olof Johansson <olof@lixom.net>
2013-10-19Merge 3.12-rc6 into driver-core-nextGreg Kroah-Hartman
We want these fixes here too. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-11gpiolib: let gpiod_request() return -EPROBE_DEFERgpio-v3.12-3Alexandre Courbot
Patch be1a4b brought some improvements to the GPIO error handling code, but also changed the return value of gpiod_request() when called on a not yet initialized GPIO descriptor: it now returns -EINVAL instead of -EPROBE_DEFER, and this affects some drivers. This patch restores the original behavior for gpiod_request(). It is safe to do so now that desc_to_gpio() does not rely on the GPIO descriptor to be initialized. Other functions changed by patch be1a4b do not see their return value affected, so these are not reverted. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reported-by: Dr. H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-11gpiolib: safer implementation of desc_to_gpio()Alexandre Courbot
The current implementation of desc_to_gpio() relies on the chip pointer to be set to a valid value in order to compute the GPIO number. This was done in the hope that we can get rid of the gpio_desc global array, but this is not happening anytime soon. This patch reimplements desc_to_gpio() in a fashion similar to that of gpio_to_desc(). As a result, desc_to_gpio(gpio_to_desc(gpio)) == gpio is now always true. This allows to call desc_to_gpio() on non-initialized descriptors as some error-handling code currently does. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reported-by: Dr. H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-11gpio/lynxpoint: check if the interrupt is enabled in IRQ handlerMika Westerberg
Checking LP_INT_STAT is not enough in the interrupt handler because its contents get updated regardless of whether the pin has interrupt enabled or not. This causes the driver to loop forever for GPIOs that are pulled up. Fix this by checking the interrupt enable bit for the pin as well. Cc: stable@vger.kernel.org Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-06gpio: samsung: Use CONFIG_ARCH_S3C64XX to check for S3C64XX supportTomasz Figa
Since CONFIG_PLAT_S3C64XX is going to be removed, this patch modifies the gpio-samsung driver to use the proper way of checking for S3C64xx support - CONFIG_ARCH_S3C64XX. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2013-10-05Merge tag 'gpio-v3.12-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "Two patches for the OMAP driver, dealing with setting up IRQs properly on the device tree boot path" * tag 'gpio-v3.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio/omap: auto-setup a GPIO when used as an IRQ gpio/omap: maintain GPIO and IRQ usage separately
2013-10-01gpio/omap: auto-setup a GPIO when used as an IRQgpio-v3.12-2Javier Martinez Canillas
The OMAP GPIO controller HW requires a pin to be configured in GPIO input mode in order to operate as an interrupt input. Since drivers should not be aware of whether an interrupt pin is also a GPIO or not, the HW should be fully configured/enabled as an IRQ if a driver solely uses IRQ APIs such as request_irq(), and never calls any GPIO-related APIs. As such, add the missing HW setup to the OMAP GPIO controller's irq_chip driver. Since this bypasses the GPIO subsystem we have to ensure that another driver won't be able to request the same GPIO pin that is used as an IRQ and set its direction as output. Requesting the GPIO and setting its direction as input is allowed though. This fixes smsc911x ethernet support for tobi and igep OMAP3 boards and OMAP4 SDP SPI based ethernet that use a GPIO as an interrupt line. Cc: stable@vger.kernel.org Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: George Cherian <george.cherian@ti.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Tested-by: Lars Poeschel <poeschel@lemonage.de> Reviewed-by: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-01gpio/omap: maintain GPIO and IRQ usage separatelyJavier Martinez Canillas
The GPIO OMAP controller pins can be used as IRQ and GPIO independently so is necessary to keep track GPIO pins and IRQ lines usage separately to make sure that the bank will always be enabled while being used. Also move gpio_is_input() definition in preparation for the next patch that setups the controller's irq_chip driver when a caller requests an interrupt line. Cc: stable@vger.kernel.org Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: George Cherian <george.cherian@ti.com> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Tested-by: Lars Poeschel <poeschel@lemonage.de> Reviewed-by: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-26sysfs: clean up sysfs_get_dirent()Tejun Heo
The pre-existing sysfs interfaces which take explicit namespace argument are weird in that they place the optional @ns in front of @name which is contrary to the established convention. For example, we end up forcing vast majority of sysfs_get_dirent() users to do sysfs_get_dirent(parent, NULL, name), which is silly and error-prone especially as @ns and @name may be interchanged without causing compilation warning. This renames sysfs_get_dirent() to sysfs_get_dirent_ns() and swap the positions of @name and @ns, and sysfs_get_dirent() is now a wrapper around sysfs_get_dirent_ns(). This makes confusions a lot less likely. There are other interfaces which take @ns before @name. They'll be updated by following patches. This patch doesn't introduce any functional changes. v2: EXPORT_SYMBOL_GPL() wasn't updated leading to undefined symbol error on module builds. Reported by build test robot. Fixed. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Kay Sievers <kay@vrfy.org> Cc: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-22gpio: rcar: Remove #gpio-range-cells DT property usageLaurent Pinchart
Commit a1bc260bb5f5d95da854be7898202d788e94448d ("gpio: clean up gpio-ranges documentation") deprecated the #gpio-range-cells property. Replace its usage with a hardcoded value in the gpio-rcar driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-09-13Remove GENERIC_HARDIRQ config optionMartin Schwidefsky
After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-09-12Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: "This has been sitting in -next for a while with no objections and all MIPS defconfigs except one are building fine; that one platform got broken by another patch in your tree and I'm going to submit a patch separately. - a handful of fixes that didn't make 3.11 - a few bits of Octeon 3 support with more to come for a later release - platform enhancements for Octeon, ath79, Lantiq, Netlogic and Ralink SOCs - a GPIO driver for the Octeon - some dusting off of the DECstation code - the usual dose of cleanups" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (65 commits) MIPS: DMA: Fix BUG due to smp_processor_id() in preemptible code MIPS: kexec: Fix random crashes while loading crashkernel MIPS: kdump: Skip walking indirection page for crashkernels MIPS: DECstation HRT calibration bug fixes MIPS: Export copy_from_user_page() (needed by lustre) MIPS: Add driver for the built-in PCI controller of the RT3883 SoC MIPS: DMA: For BMIPS5000 cores flush region just like non-coherent R10000 MIPS: ralink: Add support for reset-controller API MIPS: ralink: mt7620: Add cpu-feature-override header MIPS: ralink: mt7620: Add spi clock definition MIPS: ralink: mt7620: Add wdt clock definition MIPS: ralink: mt7620: Improve clock frequency detection MIPS: ralink: mt7620: This SoC has EHCI and OHCI hosts MIPS: ralink: mt7620: Add verbose ram info MIPS: ralink: Probe clocksources from OF MIPS: ralink: Add support for systick timer found on newer ralink SoC MIPS: ralink: Add support for periodic timer irq MIPS: Netlogic: Built-in DTB for XLP2xx SoC boards MIPS: Netlogic: Add support for USB on XLP2xx MIPS: Netlogic: XLP2xx update for I2C controller ...
2013-09-10Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds
Pull device tree core updates from Grant Likely: "Generally minor changes. A bunch of bug fixes, particularly for initialization and some refactoring. Most notable change if feeding the entire flattened tree into the random pool at boot. May not be significant, but shouldn't hurt either" Tim Bird questions whether the boot time cost of the random feeding may be noticeable. And "add_device_randomness()" is definitely not some speed deamon of a function. * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: of/platform: add error reporting to of_amba_device_create() irq/of: Fix comment typo for irq_of_parse_and_map of: Feed entire flattened device tree into the random pool of/fdt: Clean up casting in unflattening path of/fdt: Remove duplicate memory clearing on FDT unflattening gpio: implement gpio-ranges binding document fix of: call __of_parse_phandle_with_args from of_parse_phandle of: introduce of_parse_phandle_with_fixed_args of: move of_parse_phandle() of: move documentation of of_parse_phandle_with_args of: Fix missing memory initialization on FDT unflattening of: consolidate definition of early_init_dt_alloc_memory_arch() of: Make of_get_phy_mode() return int i.s.o. const int include: dt-binding: input: create a DT header defining key codes. of/platform: Staticize of_platform_device_create_pdata() of: Specify initrd location using 64-bit dt: Typo fix OF: make of_property_for_each_{u32|string}() use parameters if OF is not enabled
2013-09-07Merge tag 'gpio-v3.12-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for the v3.12 series: - A new driver for the TZ1090 PDC which is used on the metag architecture. - A new driver for the Kontron ETX or COMexpress GPIO block. This is found on some ETX x86 devices. - A new driver for the Fintek Super-I/O chips, used on some x86 boards. - Added device tree probing on a few select GPIO blocks. - Drop the Exynos support from the Samsung GPIO driver. The Samsung maintainers have moved over to use the modernized pin control driver to provide GPIO for the modern platforms instead. - The usual bunch of non-critical fixes and cleanups" * tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (36 commits) gpio: return -ENOTSUPP if debounce cannot be set gpio: improve error path in gpiolib gpio: add GPIO support for F71882FG and F71889F of: add vendor prefix for Microchip Technology Inc gpio: mcp23s08: rename the device tree property gpio: samsung: Drop support for Exynos SoCs gpio: pcf857x: Remove pdata argument to pcf857x_irq_domain_init() gpio: pcf857x: Sort headers alphabetically gpio: max7301: Reverting "Do not force SPI speed when using OF Platform" gpio: Fix bit masking in Kontron PLD GPIO driver gpio: pca953x: fix gpio input on gpio offsets >= 8 drivers/gpio: simplify use of devm_ioremap_resource drivers/gpio/gpio-omap.c: convert comma to semicolon gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enable gpio: Fix platform driver name in Kontron PLD GPIO driver gpio: adnp: Fix segfault if request_threaded_irq fails gpio: msm: Staticize local variable 'msm_gpio' gpio: gpiolib-of.c: make error message more meaningful by adding the node name and index gpio: use dev_get_platdata() gpio/mxc: add chained_irq_enter/exit() to mx2_gpio_irq_handler ...
2013-09-04gpio: return -ENOTSUPP if debounce cannot be setgpio-v3.12-1Linus Walleij
It appears some drivers are using gpio_set_debounce() opportunistically, i.e. without knowing whether it works or not. (Example: input/keyboard/gpio_keys.c) to account for this use case, return -ENOTSUPP and do not print any warnings in this case. Took a round over the other gpio_set_debounce() consumers to make sure that none of them are relying on the returned error code to be something specific. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-03gpio: improve error path in gpiolibLinus Walleij
At several places the gpiolib will proceed to handle a GPIO descriptor even if it's ->chip member is NULL and no gpiochip is associated. Fix this by checking that both the descriptor cookie *and* the chip pointer are valid. Also bail out earlier with more specific diagnostic messages on missing operations for setting as input/output or debounce. ChangeLog v1->v2: - Also return -EIO on gpiod_set_debounce() with missing operations in the vtable - Fix indentations. Suggested-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Frank Rowand <frank.rowand@sonymobile.com> Cc: Tim Bird <tim.bird@sonymobile.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-30gpio: add GPIO support for F71882FG and F71889FSimon Guinot
This patch adds support for the GPIOs found on the Fintek super-I/O chips F71882FG and F71889F. A super-I/O is a legacy I/O controller embedded on x86 motherboards. It is used to connect the low-bandwidth devices. Among others functions the F71882FG/F71889F provides: a parallel port, two serial ports, a keyboard controller, an hardware monitoring controller and some GPIO pins. Note that this super-I/Os are embedded on some Atom-based LaCie NASes. The GPIOs are used to control the LEDs and the hard drive power. Changes since v3: - Use request_muxed_region to protect the I/O ports against concurrent accesses. Changes since v2: - Remove useless NULL setters for driver data. Changes since v1: - Enhance the commit message by describing what is a Super-I/O. - Use self-explanatory names for the GPIO register macros. - Add a comment to explain the platform device and driver registration. - Fix gpio_get when GPIO is configured in input mode. I only had the hardware to check this mode recently... Signed-off-by: Simon Guinot <simon.guinot@sequanux.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-30gpio: mcp23s08: rename the device tree propertyLars Poeschel
The device tree property should be more descriptive. microchip seems more reasonable than mcp. The old mcp prefix is still supported but marked as deprecated. Users of mcp have to switch to the microchip prefix. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-29gpio: implement gpio-ranges binding document fixStephen Warren
Use the new of_parse_phandle_with_fixed_args() to implement the corrected gpio-ranges DT property definition. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-08-29gpio: (gpio-pca953x) move header to linux/platform_data/Vivien Didelot
This patch moves the pca953x.h header from include/linux/i2c to include/linux/platform_data and updates existing support accordingly. Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-08-29gpio: samsung: Drop support for Exynos SoCsTomasz Figa
GPIO support on Exynos SoCs is provided by pinctrl-samsung driver, leaving all the support code in gpio-samsung driver unused. This dead code can be safely removed and so it is done by this patch. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-26gpio MIPS/OCTEON: Add a driver for OCTEON's on-chip GPIO pins.David Daney
The SOCs in the OCTEON family have 16 (or in some cases 20) on-chip GPIO pins, this driver handles them all. Configuring the pins as interrupt sources is handled elsewhere (OCTEON's irq handling code). Signed-off-by: David Daney <david.daney@cavium.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/5633/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23gpio: pcf857x: Remove pdata argument to pcf857x_irq_domain_init()Laurent Pinchart
The argument is not used, remove it. No board registers a pcf857x device with an IRQ without specifying platform data, IRQ domain registration behaviour is thus not affected by this change. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-23gpio: pcf857x: Sort headers alphabeticallyLaurent Pinchart
This makes checking for duplicates when adding a new #include easier. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-23gpio: max7301: Reverting "Do not force SPI speed when using OF Platform"Christophe Leroy
This patch reverts commit 047b93a35961f7a6561e6f5dcb040738f822b892 which breaks MAX7301 GPIO driver because that commit was dependant on a rejected patch that was implementing selection of SPI speed from the Device Tree. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Acked-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: Fix bit masking in Kontron PLD GPIO driverBrunner Michael
This patch fixes the bit masking within the GPIO driver. The masking is basically done twice which causes the wrong GPIOs to be addressed. Signed-off-by: Michael Brunner <michael.brunner@kontron.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: pca953x: fix gpio input on gpio offsets >= 8Andrew Ruder
This change fixes a regression introduced by commit f5f0b7aa8 (gpio: pca953x: make the register access by GPIO bank) When the pca953x driver was converted to using 8-bit reads/writes the bitmask in pca953x_gpio_get_value wasn't adjusted with a modulus BANK_SZ and consequently looks at the wrong bits in the input register. Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16drivers/gpio: simplify use of devm_ioremap_resourceJulia Lawall
Remove unneeded error handling on the result of a call to platform_get_resource when the value is passed to devm_ioremap_resource. Move the call to platform_get_resource adjacent to the call to devm_ioremap_resource to make the connection between them more clear. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression pdev,res,n,e,e1; expression ret != 0; identifier l; @@ - res = platform_get_resource(pdev, IORESOURCE_MEM, n); ... when != res - if (res == NULL) { ... \(goto l;\|return ret;\) } ... when != res + res = platform_get_resource(pdev, IORESOURCE_MEM, n); e = devm_ioremap_resource(e1, res); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16drivers/gpio/gpio-omap.c: convert comma to semicolonJulia Lawall
Replace a comma between expression statements by a semicolon. This changes the semantics of the code, but given the current indentation appears to be what is intended. A simplified version of the semantic patch that performs this transformation is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ expression e1,e2,e; type T; identifier i; @@ e1 -, +; e2; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio-lynxpoint: Fix warning about unbalanced pm_runtime_enableMathias Nyman
Missing pm_runtime_disable call in driver remove path caused an unbalanaced pm_runtime_enable warning when driver was reloaded Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: Fix platform driver name in Kontron PLD GPIO driverMichael Brunner
This patch changes the driver name to be consistent with the name that is registered as cell name in the MFD driver. Otherwise the driver won't load. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Kevin Strasser <strassek@engr.orst.edu> Signed-off-by: Michael Brunner <michael.brunner@kontron.com>
2013-08-16gpio: adnp: Fix segfault if request_threaded_irq failsLars Poeschel
In case request_threaded_irq inside adnp_irq_setup fails, the driver segfaults. This is because irq_domain_remove is called twice with the same pointer. First time in adnp_irq_setup and then a second time after leaving adnp_irq_setup in the error path of adnp_i2c_probe inside adnp_teardown. This fixes this by removing the call to irq_domain_remove from adnp_irq_setup. Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: msm: Staticize local variable 'msm_gpio'Jingoo Han
The local variable 'msm_gpio' is used only in this file. Fix the following sparse warning: drivers/gpio/gpio-msm-v2.c:109:21: warning: symbol 'msm_gpio' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: gpiolib-of.c: make error message more meaningful by adding the node ↵Lothar Waßmann
name and index Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: use dev_get_platdata()Jingoo Han
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio/mxc: add chained_irq_enter/exit() to mx2_gpio_irq_handlerUwe Kleine-König
Similar to commit 0e44b6e (gpio/mxc: add chained_irq_enter/exit() to mx3_gpio_irq_handler()) . It doesn't seem to be critical to make the irqs work, but still it is more correct. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio-mcp23s08: i2c: auto-select base if no DT match or platform dataDaniel M. Weeks
The call to gpiochip_add made by this driver is capable of auto-selecting a base if one is not provided. However, it was not called unless there was already a DT entry or platform data. This patch calls it even if the base is not already known so that gpiochip_add can attempt to find a usable base. Signed-off-by: Daniel M. Weeks <dan@danweeks.net> Acked-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-08-16gpio: palmas: Fix misreported GPIO out valueAndrew Chew
It seems that the value read back from the PALMAS_GPIO_DATA_IN register isn't valid if the GPIO direction is out. When that's the case, we can read back the PALMAS_GPIO_DATA_OUT register to get the proper output value. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-31gpio_msm: Fix build error due to missing err.hStephen Boyd
drivers/gpio/gpio-msm-v1.c: In function 'gpio_msm_v1_probe': drivers/gpio/gpio-msm-v1.c:656:2: error: implicit declaration of function 'IS_ERR' [-Werror=implicit-function-declaration] drivers/gpio/gpio-msm-v1.c:657:3: error: implicit declaration of function 'PTR_ERR' [-Werror=implicit-function-declaration] This driver failed to compile after commit 68515bb (gpio_msm: Convert to use devm_ioremap_resource, 2013-06-10). Acked-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-31Revert "gpio/omap: don't create an IRQ mapping for every GPIO on DT"Linus Walleij
This reverts commit 0e970cec05635adbe7b686063e2548a8e4afb8f4. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-31Revert "gpio/omap: auto request GPIO as input if used as IRQ via DT"Linus Walleij
This reverts commit b4419e1a15905191661ffe75ba2f9e649f5d565e. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-31Revert "gpio/omap: fix build error when OF_GPIO is not defined."Linus Walleij
This reverts commit 949eb1a4d29dc75e0b5b16b03747886b52ecf854. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-29gpio: palmas: add dt supportLaxman Dewangan
Add of_device_id table for Palma GPIO to be enable the driver from DT file. The driver can be registered from DT file as: palmas: tps65913@58 { ::::::::::: palmas_gpio: palmas_gpio { compatible = "ti,palmas-gpio"; gpio-controller; #gpio-cells = <2>; }; }; Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-23gpio: gpio-mxc: Include "<linux/err.h>"Fabio Estevam
Commit 8cd73e4e (gpio: gpio-mxc: Use devm functions) causes the following build error on imx_v4_v7_defconfig: drivers/gpio/gpio-mxc.c:414:2: error: implicit declaration of function 'IS_ERR' [-Werror=implicit-function-declaration] drivers/gpio/gpio-mxc.c:415:3: error: implicit declaration of function 'PTR_ERR' [-Werror=implicit-function-declaration] Note: imx_v6_v7_defconfig does not give this build error, probably due to some indirect header file inclusion. Reported-by: Olof Johansson <olof@lixom.net> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-21gpio: pxa: remove dead codeDaniel Mack
Commit f87311743 ("ARM: mmp: add more compatible names in gpio driver") changed the driver logic to determine the number of available GPIOs from the compatible string, and hence obsoleted the (undocumented) child nodes that were previously necessary. However, it left some remainder which can be safely removed now. Also, this patch makes pxa_gpio_probe_dt() return the correct value in case irq_alloc_descs() fails. Signed-off-by: Daniel Mack <zonque@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-21gpio: em: Add pinctrl supportMagnus Damm
Register the GPIO pin range, and request and free GPIO pins using the pinctrl API. The pctl_name platform data member should be used by platform devices to point out which pinctrl device to use. Follows same style as "dc3465a gpio-rcar: Add pinctrl support", by Laurent Pinchart, thanks to him. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-07-21gpio: Kontron PLD gpio driverGuenter Roeck
Add gpio support for the on-board PLD found on some Kontron embedded modules. Originally-from: Michael Brunner <michael.brunner@kontron.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Kevin Strasser <kevin.strasser@linux.intel.com> Acked-by: Darren Hart <dvhart@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>