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>
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>
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>
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>
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>
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>
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>
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>
_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>
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>
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>
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>
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>
The GPIO driver should reside in drivers/gpio.
v3: Change Kconfig option to def_bool y
v2: Make the Kconfig symbol a silent option, dependent on ARCH_EP93XX
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The gpio-mxc controller complies with basic_mmio_gpio library. The
patch convert the driver to use the library.
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>
The patch makes necessary changes on gpio-mxc as below to turn it
into an upstanding gpio driver.
* Add a list to save all mx2 ports references, so that
mx2_gpio_irq_handler can walk through all interrupt status
registers
* Use readl/writel to replace mach-specific accessors
__raw_readl/__raw_writel
* Change mxc_gpio_init into mxc_gpio_probe function
* Move "struct mxc_gpio_port" into gpio-mxc.c, as it needs not to
be public at all, and also make some other cleanup on
plat-mxc/include/mach/gpio.h at the same time
And the patch then migrates mach-imx and mach-mx5 to the updated
driver by adding corresponding platform devices.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
GPIO drivers are getting moved to drivers/gpio for cleanup and
consolidation. This patch moves the plat-mxc driver. Follow up
patches will clean it up and make it a fine upstanding gpio driver.
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>
The patch makes necessary changes on gpio-mxs as below to turn it
into an upstanding gpio driver.
* Clean up the gpio port definition stuff
* Use readl/writel to replace mach-specific accessors
__raw_readl/__raw_writel
* Change mxs_gpio_init into mxs_gpio_probe function
And it then migrates mach-mxs to the updated driver by adding
corresponding platform devices.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
GPIO drivers are getting moved to drivers/gpio for cleanup and
consolidation. This patch moves the mxs driver. Follow up patches
will clean it up and make it a fine upstanding example of a gpio
driver.
v2: Removed header file entirely and put struct definition directly
into driver. The struct isn't used anywhere else in the kernel.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
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>
Remove the #define GEN_74X164_GPIO_COUNT since it's only used in
one place and it's meaning is obvious. Also remove the #define
GEN_74X164_DRIVER_NAME and use spi->modalias to set the gpio chip's
label and the string "74x164" for the driver name.
Reorder the code slightly to remove the need to prototype
gen_74x164_set_value.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
After the GPIO driver move, some symbols became selectable when they
shouldn't be. Tighten the dependencies.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
We had a few drivers move from arch/arm into drivers/gpio, but they
don't actually compile without the ARM platform headers etc. As a
result they were messing up allyesconfig on x86.
Make them depend on ARM.
Reported-by: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub).
The ML7223 IOH is for MP(Media Phone) use.
The ML7223 is companion chip for Intel Atom E6xx series.
The ML7223 is completely compatible for Intel EG20T PCH.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
gpio_{request,free}_array should not (and do not) modify the passed gpio
array, so make the parameter const.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
GPIO 1 to 8 are added for TPS65911 chip version. The gpio driver
now handles more than one gpio lines. Subsequent versions of the
chip family can add new GPIO lines with minimal driver changes.
Signed-off-by: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
The GPIO driver should reside in drivers/gpio/ for better
organization.
Signed-off-by: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Move the Samsung s5pc100 SoC GPIO driver to drivers/gpio
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Move the Samsung s5pv210 SoC GPIO driver to drivers/gpio
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Move the Samsung Exynos4 series SoCs GPIO driver to drivers/gpio
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
It's common gpiolib for recent Samsung SoCs. Move to drivers/gpio
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Useful to check the status of the runtime pin muxing.
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
[Squashed, modified to use chip-internal IRQ trigger state]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This moves the Nomadik GPIO driver out of arch/arm/plat-nomadik
and into the desired location indicated by the subsystem
maintainer.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[grant.likely: squashed with kconfig fixup]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This moves the U300 GPIO driver out of arch/arm/mach-u300 and into
the desired location indicated by the subsystem maintainer.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
While this is essentially a no-op for this driver, it has the
side effect of letting the PMU driver snoop D3 requests from
the PCI core for this driver.
This is only for langwell, not for whitney point.
Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
PCA957x is i2c gpio expander, and similar to PCA953x. Although register
configurations are different between PCA957x and PCA953x. They can share
a lot of components, such as IRQ handling, GPIO IN/OUT. So updating PCA953x
driver to support PCA957x chips.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
cs5535-gpio.c has been split into two, with various setup moved
into cs5535-mfd.c. Given that cs5535-gpio will not load without
the -mfd part, lets make that dependency explicit in Kconfig
Signed-off-by: Ed Wildgoose <kernel@wildgooses.com>
Acked-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
With the addition of a platform device mfd_cell pointer, MFD drivers
can go back to passing platform data back to their sub drivers.
This allows for an mfd_cell->mfd_data removal and thus keep the
sub drivers MFD agnostic. This is mostly needed for non MFD aware
sub drivers.
Cc: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
With the addition of a platform device mfd_cell pointer, MFD drivers
can go back to passing platform data back to their sub drivers.
This allows for an mfd_cell->mfd_data removal and thus keep the
sub drivers MFD agnostic. This is mostly needed for non MFD aware
sub drivers.
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
With the addition of a device platform mfd_cell pointer, MFD drivers
can go back to passing platform data back to their sub drivers.
This allows for an mfd_cell->mfd_data removal and thus keep the
sub drivers MFD agnostic. This is mostly needed for non MFD aware
sub drivers.
Acked-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
alpha allmodconfig:
drivers/gpio/ml_ioh_gpio.c: In function 'ioh_gpio_probe':
drivers/gpio/ml_ioh_gpio.c:205: error: implicit declaration of function 'kzalloc'
drivers/gpio/ml_ioh_gpio.c:205: warning: assignment makes pointer from integer without a cast
also fix this:
drivers/gpio/ml_ioh_gpio.c:145: warning: 'ioh_gpio_save_reg_conf' defined but not used
drivers/gpio/ml_ioh_gpio.c:154: warning: 'ioh_gpio_restore_reg_conf' defined but not used
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>
alpha allmodconfig:
drivers/gpio/vx855_gpio.c: In function 'vx855gpio_probe':
drivers/gpio/vx855_gpio.c:233: error: implicit declaration of function 'kzalloc'
drivers/gpio/vx855_gpio.c:233: warning: assignment makes pointer from integer without a cast
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>
Allow GPIO_BASIC_MMIO_CORE to be used to provide an accessor library
for implementing GPIO drivers whilst abstracting the register access
detail. Based on a patch from Anton Vorontsov[1] and adapted to allow
bgpio_chip to be embedded in another structure.
Changes since v1:
- Register the gpio_chip in the platform device probe
1. https://lkml.org/lkml/2011/4/19/401
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
The build files for drivers/gpio has some wording and comments
about the directory being reserved exclusively for GPIO expanders
(according to the gpio.txt file these are on external busses) and
this has been false for some time. We already have PL061 and
Xilinx drivers which are in silicon and now I'm moving more
silicon drivers here, so delete this and reword it a bit.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This patch allows to trace gpio operations using ftrace
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Make pca953x driver use the simple irq handler since no hardware control
is necessary and the driver lacks an irq_ack function. handle_edge_irq()
calls chip->irq_ack() which crashes since this function does not exist.
Signed-off-by: Erik Botö <erik.boto@pelagicore.com>
Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Export function gpiochip_find so that modules can use it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
David Jander