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path: root/drivers/gpio
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2013-10-11gpio: bcm281xx: Fix nested interrupt handler issueMarkus Mayer
The GPIO interrupt handler does not need to be marked as nested. Signed-off-by: Markus Mayer <markus.mayer@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-11gpiolib: let gpiod_request() return -EPROBE_DEFERAlexandre 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-intel-mid: update prefixes and names from langwell to intel-midDavid Cohen
After file was renamed from gpio-langwell to gpio-intel-mid, this patch updates the variables, functions and structs to be based on intel-mid instead of langwell. There is no function change. Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-11gpio: rename gpio-langwell to gpio-intel-midDavid Cohen
gpio-langwell is a deprecated name. Despite the driver was made initially for Langwell, it supports now other Intel Mid SoC's. This patch does no change beside the file renaming with Kconfig/Makefile update. Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-11gpio: langwell: add Intel Merrifield supportDavid Cohen
This patch implements a better way to handle multiple SoC's and adds Intel Merrifield support to gpio-langwell. It was based on previous work from Ning Li <ning.li@intel.com> Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Signed-off-by: Fei Yang <fei.yang@intel.com> Signed-off-by: Ning Li <ning.li@intel.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>
2013-10-11gpiolib / ACPI: move acpi_gpiochip_free_interrupts next to the request functionMika Westerberg
It makes more sense to have these functions close to each other. No functional changes. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-09drivers: clean-up prom.h implicit includesRob Herring
Powerpc is a mess of implicit includes by prom.h. Add the necessary explicit includes to drivers in preparation of prom.h cleanup. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@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
2013-10-02gpio: arizona: Use the of_node from the Arizona deviceCharles Keepax
We need to use the of_node from the main Arizona device as that holds our configuration. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-02gpio: twl4030: Remove redundant of_match_ptrSachin Kamat
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-02gpio: clps711x: Remove redundant of_match_ptrSachin Kamat
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-02gpio: adnp: Remove redundant of_match_ptrSachin Kamat
The data structure of_match_ptr() protects is always compiled in. Hence of_match_ptr() is not needed. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-10-01gpio/omap: auto-setup a GPIO when used as an IRQJavier 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>
2013-09-25ARM: davinci: gpio: use gpiolib API instead of inline functionsPhilip Avinash
Remove NEED_MACH_GPIO_H config select option for ARCH_DAVINCI to start using gpiolib interface for davinci platforms. This makes it easier to use the gpio driver on other platforms as it breaks dependency on mach-davinci. Latencies for gpio_get/set APIs will increase. On measurement, latency was found to have increased by 18 microsecond with gpiolib API as compared to inline APIs. Measurement was done on DA850 EVM for gpio_get_value() API by taking the printk timing across the call with interrupts disabled. inline gpio API with interrupt disabled [ 29.734337] before gpio_get [ 29.736847] after gpio_get Time difference 0.00251 gpio library with interrupt disabled [ 272.876763] before gpio_get [ 272.879291] after gpio_get Time difference 0.002528 Latency increased by (0.002528 - 0.00251) = 18 microsecond. While at it, remove GPIO_TYPE_DAVINCI enum definition as gpio-davinci.c is converted to Linux device driver model. Signed-off-by: Philip Avinash <avinashphilip@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> [nsekhar@ti.com: minor edits to commit message] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-09-24gpio: davinci: move to platform deviceKV Sujith
Modify DaVinci GPIO driver to become a platform device driver. The driver does not have platform driver structure or a probe. Instead, it has pure_initcall function for initialization. The platform specific informaiton is obtained using the DaVinci specific davinci_soc_info structure. This is a problem for Device Tree (DT) implementation. As a first stage of DT conversion, we implement a probe. Additional notes: - The driver registration happens as postcore_initcall. This is required since machine init functions like da850_lcd_hw_init() make use of GPIO. - Start using devres APIs for simpler error handling. Signed-off-by: KV Sujith <sujithkv@ti.com> [avinashphilip@ti.com: Move global definition of "davinci_gpio_controller" to local] Signed-off-by: Philip Avinash <avinashphilip@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> [nsekhar@ti.com: drop unused structure member, rebase to new clean-up patch and fix error messages] Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
2013-09-24gpio: davinci: coding style correctionPhilip Avinash
Make some minor coding style fixes. Use proper multi-line commenting style, and use a macro for register offset. Signed-off-by: Philip Avinash <avinashphilip@ti.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> [nsekhar@ti.com: drop changes which are considered unnecessary churn - line break fixes variable name changes and include file reordering] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-09-23gpio: pcf857x: Add OF supportLaurent Pinchart
Add DT bindings for the pcf857x-compatible chips and parse the device tree node in the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-23gpio: pca953x: Don't flip bits on PCA957x GPIO expanders when probing them.Graeme Smecher
The pca957x driver supports a handful of I2C GPIO expanders from NXP, Maxim, and TI. For the PCA9574 and PCA9575 devices only, the driver resets the GPIO level and direction in the pca957x_probe function. This seems like the wrong thing to do, since it can cause hardware bit twiddles during warm reboots when the chip state and reset values don't match. This kind of initialization is best left upstream (in a bootloader) or downstream (in userspace). It's also an inconsistency across devices supported by this driver. This patch is NOT boot-tested: the SoC I'm using is stuck on 2.6.37, and the patch doesn't apply trivially. Signed-off-by: Graeme Smecher <gsmecher@threespeedlogic.com> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-23gpio: gpio-mc33880: Remove redundant spi_set_drvdataSachin Kamat
Driver core sets driver data to NULL upon failure or remove. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-23gpio: gpio-74x164: Remove redundant of_match_ptrSachin Kamat
'gen_74x164_dt_ids' is always compiled in. Hence the macro is not necessary. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-23gpio: gpio-74x164: Remove redundant spi_set_drvdataSachin Kamat
Driver core sets driver data to NULL upon failure or remove. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-23Merge branch 'iop-cleanup' into develLinus Walleij
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>
2013-09-20gpio: bcm-kona: only use set_irq_flags() on ARMLinus Walleij
As per the pattern from other GPIO drivers, use set_irq_flags() on ARM only, use irq_set_noprobe() on other archs. Also rename the argument "virq" to just "irq", this IRQ isn't any more "virtual" than any other Linux IRQ number, we use "hwirq" for the actual hw-numbers, "virq" is just bogus. Reviewed-by: Markus Mayer <mmayer@broadcom.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20ARM: plat-iop: pass physical base for GPIOLinus Walleij
This alters the IOP platforms to pass a physical base for their GPIO blocks and alters the driver to remap it when probing instead of relying on the virtual addresses to be used. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpio: iop: use readl/writel accessorsLinus Walleij
Use the standard 32bit I/O accessors instead of just assigning addresses. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20ARM: plat-iop: instantiate GPIO from platform deviceLinus Walleij
This converts the IOP32x and IOP33x platforms to pass their base address offset by a resource attached to a platform device instead of using static offset macros implicitly passed through <linux/gpio.h> including <mach/gpio.h>. Delete the local <mach/gpio.h> and <asm/hardware/iop3xx-gpio.h> headers and remove the selection of NEED_MACH_GPIO_H. Pass the virtual address as a resource in the platform device at this point for bisectability, next patch will pass the physical address as is custom. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20ARM: plat-iop: remove custom complex GPIO implementationLinus Walleij
The kernel will now only use gpiolib to access GPIOs, so remove the complex GPIO flag and the custom implementation. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpio: decouple the IOP GPIO driver from platformLinus Walleij
This removes the only dependence between the IOP GPIO driver and the GENERIC_GPIO header in <mach/gpio.h> and its common implementation in the <asm/*> namespace by copying the one constant it is using into the driver file. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20ARM: plat-iop: move the GPIO driver to drivers/gpioLinus Walleij
Move the IOP GPIO driver to live with its siblings in the GPIO subsystem. Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpio: ucb1400: Can be built as a moduleJean Delvare
With the recent code cleanup from Marek Vasut, driver gpio-ucb1400 can be built as a module, so change symbol GPIO_UCB1400 from bool to tristate. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Marek Vasut <marex@denx.de> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpio: bt8xx: remove unnecessary pci_set_drvdata()Jingoo Han
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpio: arizona: Add wm8997 support to probeCharles Keepax
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpio: bcm281xx: Add GPIO driverMarkus Mayer
Add the GPIO driver for the Broadcom bcm281xx family of mobile SoCs. These GPIO controllers may contain up to 8 banks where each bank includes 32 pins that can be driven high or low and act as an edge sensitive interrupt. Signed-off-by: Markus Mayer <markus.mayer@linaro.org> Reviewed-by: Christian Daudt <csd@broadcom.com> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Matt Porter <matt.porter@linaro.org> Reviewed-by: Stephen Warren <swarren@nvidia.com> [Added depends on OF_GPIO] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-20gpiolib: factorize gpiod_get/set functionsAlexandre Courbot
gpiod_get/set functions share common code between their regular and cansleep variants. The exporting of the gpiod interface will make the situation worse. This patch factorizes the common code to avoid code redundancy. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-19emev2: GPIOLIB: Enable support for OFIan Molton
EMEV2 is now a DT platform, however the GPIO driver cannot be used from a DT file since it does not fill out the of_node field in its gpio_chip structure. Signed-off-by: Ian Molton <ian.molton@codethink.co.uk> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-19gpio: palmas: add support for TPS80036Laxman Dewangan
TI Palmas series device TPS80036 supports 16 GPIOs. Register its all 16 gpios when this device is selected. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-19gpiolib: Include GPIO label in log messages for GPIOsMark Brown
Provide the human readable label for the GPIO as well as the number when we are recording it in order to improve the readability of log messages. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-19gpiolib: Provide helper macros for logging of GPIO eventsMark Brown
Currently many but not all GPIO log messages log the GPIO number and the formats vary. Ensure that this is done consistently by defining logging helpers which take the GPIO descriptor. The will help people pattern matching on logs and providing the number makes the log messages that omitted it more useful. Signed-off-by: Mark Brown <broonie@linaro.org> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-18gpio: pcf857x: only use set_irq_flags() on ARMLinus Walleij
As per the pattern from other GPIO drivers, use set_irq_flags() on ARM only, use irq_set_noprobe() on other archs. Also rename the argument "virq" to just "irq", this IRQ isn't any more "virtual" than any other Linux IRQ number, we use "hwirq" for the actual hw-numbers, "virq" is just bogus. Cc: George Cherian <george.cherian@ti.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-17gpiolib-acpi: convert acpi_evaluate_object() to acpi_execute_simple_method()Zhang Rui
acpi_execute_simple_method() is a new ACPI API introduced to invoke an ACPI control method that has single integer parameter and no return value. Convert acpi_evaluate_object() to acpi_execute_simple_method() in drivers/gpio/gpiolib-acpi.c Signed-off-by: Zhang Rui <rui.zhang@intel.com> Acked-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>
2013-09-17gpio: pcf857x: call the gpio user handler iff gpio_to_irq is doneGeorge Cherian
For pcf857x driver if the initial state is not set properly (proper n_latch is not passed), we get bad irq prints on console. We get this only for the first interrupt and doesnot repeat for further interrupts unles and until there are other gpio pins which are not flipping continously. following prints are seen on console. [ 40.983924] irq 0, desc: ce004080, depth: 1, count: 0, unhandled: 0 [ 40.990511] ->handle_irq(): c00aa538, handle_bad_irq+0x0/0x260 [ 40.996768] ->irq_data.chip(): c080b6ec, no_irq_chip+0x0/0x60 [ 41.002842] ->action(): (null) [ 41.006242] IRQ_NOPROBE set [ 41.009465] IRQ_NOREQUEST set Signed-off-by: George Cherian <george.cherian@ti.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-17gpio: pcf857x: remove the irq_demux_work and gpio->irqGeorge Cherian
Now that we are using devm_request_threaded_irq no need for irq_demux_work and gpio->irq. Remove all its references. Signed-off-by: George Cherian <george.cherian@ti.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-17gpio: pcf857x: change to devm_request_threaded_irqGeorge Cherian
Remove the request_irq and use devm_request_threaded_irq also cleanup free_irq. devm_* takes care of that. Signed-off-by: George Cherian <george.cherian@ti.com> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-09-17gpio: samsung: Skip initialization if device tree is presentTomasz Figa
Since this driver does not handle GPIO on device tree enabled platforms any more, it should be bypassed whenever device tree is available, to not conflict with the new pinctrl-samsung driver. 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>
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