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path: root/drivers/gpio
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2011-07-14gpio/da9052: remove a redundant assignment for gpio->da9052Axel Lin
We just set it twice in da9052_gpio_probe. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-08gpio/mxc: add device tree probe supportShawn Guo
The patch adds device tree probe support for gpio-mxc driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-08gpio/mxc: get rid of the uses of cpu_is_mx()Shawn Guo
The patch removes all the uses of cpu_is_mx(). Instead, it utilizes platform_device_id to distinguish the different gpio types, IMX1_GPIO on i.mx1, IMX21_GPIO on i.mx21 and i.mx27, IMX31_GPIO on all other i.mx SoCs. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-07gpio/mxc: add missing initialization of basic_mmio_gpio shadow variablesLothar Waßmann
The bgpio_init() function does not initialise the shadow register for the GPIO direction register. Thus, when configuring the first GPIO with gpio_set_direction() all other GPIOs of the same bank will be configured as inputs. Since the bgpio layer cannot know whether the register is readable, the initialisation should be done by the caller of bgpio_init(). Also, the 'data' shadow variable that is used inside basic_mmio_gpio to cache the current value of the GPIO_DR register is initialised from the GPIO_PSR register within bgpio_init(). Thus when setting the output value of a certain GPIO, the other GPIO outputs of the same bank will be set or cleared depending on the pin state of the GPIO inputs during bgpio_init(). Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-06gpio: Move mpc5200 gpio driver to drivers/gpioGrant Likely
GPIO drivers are getting consolidated into drivers/gpio. While at it, change the driver name to mpc5200-gpio* to avoid collisions. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-06GPIO: DA9052 GPIO module v3ashishj3
DA9052 PMIC has 16 bit GPIO bus for peripheral control. This patch add support for the GPIO pins on the DA9052. Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-05gpio/tegra: Use engineering names in DT compatible propertyStephen Warren
Engineering names are more stable than marketing names. Hence, use them for Device Tree compatible properties instead. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16gpio/ml-ioh: fix off-by-one for displaying variable i in dev_errAxel Lin
with the "for (; i != 0; i--)" sytax, i-- will be executed after the iteration. thus dev_err shows wrong i value. Switch to "while(--i >= 0)" which is better in readability. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16gpio/pca953x: Deprecate meaningless device-tree bindingsDavid Jander
The property 'polarity' is handled by the GPIO core, and the 'gpio-base' should be assigned automatically. It is meaningless in the device-tree, since GPIO's are identified by the "chip-name"/offset pair. This way, the whole pca953x_get_alt_pdata() can hopefully soon go away. We still need to check whether we really want GPIO-interrupt functionality by simply looking if the I2C node has an interrupts property defined, since this property is not used for anything else. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16gpio/pca953x: Remove dynamic platform data pointerDavid Jander
In the case that we obtain device-tree data to fill in platform_data, the new platform data struct was dynamically allocated, but the pointer to it was not used everywhere it should. It seems easier to fix this issue by removing the dynamic allocation altogether since its data is only used during driver probing. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16gpio/pca953x: Fix IRQ support.David Jander
It seems that in the normal case, IRQ_NOREQUEST needs to be explicitly cleared, otherwise claiming the interrupt fails. In the case of sparse interrupts, the descriptor needs to be allocated first. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-16Merge branch 'for_3.1/gpio-cleanup' of ↵Grant Likely
git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into gpio/next
2011-06-16gpio/omap: cleanup show revision, remove cpu_is checks, display only onceKevin Hilman
Remove cpu_is_* checks from gpio_show_revision() by passing in the revision address offset from platform data. SoCs with no revision register (15xx, 7xx, and all MPUIOs) use -1 (actually, USHRT_MAX) to signify no register. While here, all GPIO banks are assumed to be the same revision, so fix show_revision() to only show the revision for the first bank it finds. This removes duplicate GPIO revision prints during boot. Thanks to Charulatha V <charu@ti.com> for finding/fixing a few -1s that were missed in the original patch. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: debounce remove SoC specific registers, use pdataKevin Hilman
Use register offsets passed in from pdata for accessing debounce registers. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: cleanup _set_gpio_wakeup(), remove ifdefsKevin Hilman
Make _set_gpio_wakeup() generic by removing ifdefs. Code for the various SoCs/bank-methods was already the same, except for the non-wakeup GPIO checking. But that flag is set on a per-SoC basis, so can be used for all SoCs. While here, use dev_err() and remove GPIO bank calculation assumption based on subtracting bank pointers. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: remove useless gpio_valid() & check_gpio() checksKevin Hilman
These functions are useless. They are only called in a few places, and where they are called, the GPIO has already been converted from an IRQ or masked, so these functions will never fail. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: convert MPUIO IRQ over to generic irq_chipKevin Hilman
MPUIO banks have their own dedicated IRQ chip interface, separate from the "normal" GPIO banks. Convert the MPUIO IRQ chip over to using the new generic IRQ chip interface. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: conslidate enable/disable of GPIO IRQs, remove ifdefsKevin Hilman
Cleanup GPIO IRQ enable/disable handling by removing SoC-specific Also split enable/disable IRQ into separate functions for better readability and also facilitate potentially moving to generic irq_chip in the future. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: consolidate IRQ status handling, remove #ifdefsKevin Hilman
Cleanup IRQ status handling by passing IRQ status register offsets via platform data. Cleans up clearing of GPIO IRQ status and GPIO ISR handler. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: consolidate direction, input, output, remove #ifdefsKevin Hilman
Add register offset fields to GPIO platform_data for registers. This patch adds registers that control direction, input and output data. Using these register offsets in the common driver allows removal of #ifdefs and greatly improves readability. Also create dedicated data out functions: one for banks with dedicated set/clear registers, and another for banks with a single mask register. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: remove get_gpio_bank()Charulatha V
use chip info to get the pointer to the struct gpio_bank for a given GPIO bank and remove get_gpio_bank(). Signed-off-by: Charulatha V <charu@ti.com>
2011-06-16gpio/omap: replace get_gpio_index() by using bank widthKevin Hilman
The get_gpio_index() function, littered with cpu_is_* checks can be easily replaced by using bitops based on the GPIO bank width. Do so. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: _get_gpio_irqbank_mask: replace hard-coded mask with bank->widthKevin Hilman
Replace hard-coded mask values with bank->width which is already coming from platform_data. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: move bank width into struct gpio_bankKevin Hilman
Rather than having a file-global bank_width variable, move it into struct gpio_bank so it can be bank-specific. Note the bank width is already passed per-bank via platform_data, so current code would be incorrect if any banks had different width. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: remove MPUIO handling from _clear_gpio_irqbank()Kevin Hilman
Remove the OMAP1 #ifdef and MPUIO special case for _clear_gpio_irqbank() The MPUIOs do not need a register access to ack/clear the IRQ status, since reading the IRQ status clears it. In addition, the MPUIO irq_chip has an empty ack method, so _clear_gpio_irqbank() is never used for MPUIOs. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-16gpio/omap: _clear_gpio_irqbank: fix flushing of posted writeKevin Hilman
In commit 78a1a6d3411de1a8b0dc1cb92754b5f12f251912 (ARM: OMAP4: Update the GPIO support) braces were mistakenly added to included the register read-back inside the cpu_is_* checking. Remove the braces, ensuring that a register read-back is done, even when the IRQSTATUS2 register is not written. Note that the register read-back might be IRQSTATUS1 or IRQSTATUS2 depending on the CPU, but a read-back of any register in that region will cause a flush of the posted writes. Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-15Merge branch 'gpio/next-tegra' into gpio/nextGrant Likely
Conflicts: drivers/gpio/Kconfig drivers/gpio/Makefile
2011-06-15gpio/tegra: add devicetree supportGrant Likely
Add support for decoding gpios from the device tree Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Olof Johansson <olof@lixom.net>
2011-06-15gpio/tegra: Move Tegra gpio driver to drivers/gpioGrant Likely
As part of the gpio driver consolidation, this patch moves the Tegra driver into drivers/gpio Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Colin Cross <ccross@android.com>
2011-06-13gpio/74x164: fix clash with gpiolib namespaceLinus Walleij
The 74x164 GPIO driver has a static inline helper called gpio_to_chip which clashes with the gpiolib namespace if we try to expose the function with the same name from gpiolib, and it's still confusing even if we don't do that. So rename it to gpio_to_74x164_chip(). Reported-by: H Hartley Sweeten <hartleys@visionengravers.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-11gpio/mxc: fix a bug with gpio_get_value callingShawn Guo
When calling gpio_get_value, the gpio number other than bit offset should be passed as the argument. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-10gpio/vr41xx: Convert use of struct resource to resource_size(ptr)Joe Perches
Remove miscellaneous use of direct calculation by using resource_size(). Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-09gpio/nomadik: fix sleepmode for elder NomadikLinus Walleij
The mach-nomadik machine did not compile properly due to bad ux500-specific functions being called. Introduce new state variables to fix this up. Reported-by: Axel Lin <axel.lin@gmail.com> Cc: Alessandro Rubini <rubini@unipv.it> Cc: Prafulla Wadaskar <prafulla.wadaskar@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-09gpio/ep93xx: Remove superfluous debug pr_info statementGrant Likely
Reported-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08gpio/ep93xx: convert to platform_driver and use basic_mmio_gpio libraryH Hartley Sweeten
This converts the gpio-ep93xx driver into a platform_driver and uses the basic_mmio_gpio library. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08gpio/pca953x: Fix warning of enabled interrupts in handlerDavid Jander
When using nested threaded irqs, use handle_nested_irq(). This function does not call the chip handler, so no handler is set. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08gpio/pca953x: Interrupt pin is active-lowDavid Jander
The interrupt pin of the PCA953x is active low, and on the rising edge no interrupt should be produced. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08gpio/pca953x: Fix IRQ support.David Jander
It seems that in the normal case, IRQ_NOREQUEST needs to be explicitly cleared, otherwise claiming the interrupt fails. In the case of sparse interrupts, the descriptor needs to be allocated first. Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-08Merge branch 'for_3.0/gpio-fixes' of ↵Grant Likely
git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into gpio/merge
2011-06-07gpio/ep93xx: fix pr_fmt outputH Hartley Sweeten
With this driver now being moved from arch/arm/mach-ep93xx/gpio.c to drivers/gpio/gpio-ep93xx.c the prefix "ep93xx" is now redundant in the pr_* output. Using KBUILD_MODNAME is sufficient. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/samsung: make Kconfig options def_boolH Hartley Sweeten
The Samsung GPIO drivers are always built-in when the relevant platform is selected.  Change the Kconfig symbol to def_bool y dependant on the platform. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/exynos4: Fix incorrect mapping of gpio pull-up macro to register settingThomas Abraham
The S3C_GPIO_PULL_UP macro value incorrectly maps to a reserved setting of GPIO pull up/down registers on Exynos4 platform. Fix this incorrect mapping by adding wrappers to the s3c_gpio_setpull_updown and s3c_gpio_getpull_updown functions. Signed-off-by: Thomas Abraham <thomas.ab@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/mxs: convert gpio-mxs to use generic irq chipShawn Guo
The patch converts gpio-mxs driver to use generic irq chip. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/mxs: remove irq_high related implementationShawn Guo
The irq_high stuff was mistakenly copied from mxc gpio driver. The mxs gpio controller has only one irq line for each 32-pin gpio port. The patch remove irq_high related codes. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/mxs: convert gpio-mxs to use basic_mmio_gpio libraryShawn Guo
The gpio-mxs controller complies with basic_mmio_gpio library. This patch converts the driver to use the library. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-07gpio/mxc: convert gpio-mxc to use generic irq chipShawn Guo
The patch converts gpio-mxc driver to use generic irq chip. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-06-06GPIO: OMAP: add locking around calls to _set_gpio_triggeringColin Cross
_set_gpio_triggering uses read-modify-write on bank registers, lock bank->lock around all calls to it to prevent register corruption if two cpus access gpios in the same bank at the same time. Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-06GPIO: OMAP: fix setting IRQWAKEN bits for OMAP4Colin Cross
Setting the IRQWAKEN bit was overwriting previous IRQWAKEN bits, causing only the last bit set to take effect, resulting in lost wakeups when the GPIO controller is in idle. Replace direct writes to IRQWAKEN with MOD_REG_BIT calls to perform a read-modify-write on the register. Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-06GPIO: OMAP: fix section mismatch warningsRussell King
WARNING: arch/arm/plat-omap/built-in.o(.devinit.text+0x46c): Section mismatch in reference from the function omap_gpio_probe() to the function .init.text:omap_gpio_chip_init() The function __devinit omap_gpio_probe() references a function __init omap_gpio_chip_init(). If omap_gpio_chip_init is only used by omap_gpio_probe then annotate omap_gpio_chip_init with a matching annotation. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-06-06gpio: reorganize driversGrant Likely
Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-29 16:50:08 +0000