Move the Samsung s5pc100 SoC GPIO driver to drivers/gpio
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Move the Samsung s5pv210 SoC GPIO driver to drivers/gpio
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Move the Samsung Exynos4 series SoCs GPIO driver to drivers/gpio
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

It's common gpiolib for recent Samsung SoCs. Move to drivers/gpio
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Signed-off-by: NRickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: NMartin Persson <martin.persson@stericsson.com>
[Split off from larger patch]
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Useful to check the status of the runtime pin muxing.
Signed-off-by: NRabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>
[Squashed, modified to use chip-internal IRQ trigger state]
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NGrant 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: NLinus Walleij <linus.walleij@linaro.org>
[grant.likely: squashed with kconfig fixup]
Signed-off-by: NGrant 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: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NGrant 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: NKristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NDirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: NGrant 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: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NGrant 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: NEd Wildgoose <kernel@wildgooses.com>
Acked-by: NAndres Salomon <dilinger@queued.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NGrant 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: NSamuel 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: NSamuel 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: NRichard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: NSamuel 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: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus 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: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus 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/2011/4/19/401Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NGrant 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: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This patch allows to trace gpio operations using ftrace
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGrant 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: NErik Botö <erik.boto@pelagicore.com>
Signed-off-by: NRichard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Export function gpiochip_find so that modules can use it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Since all the drivers are in a 'if GPIOLIB/endif block', the depends on GPIOLIB
is redundant so remove them.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

The __raw_* accessors don't include memory barriers and can cause
problems when writes get stuck in write buffers.
Suggested-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Most controllers require the direction of a GPIO to be set by writing to
a direction register.  Add support for either an input direction
register or an output direction register.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Some controllers have separate input and output registers.  For these
controllers, use "set" for the output and "dat" for the input.

Changes since v2: reuse "set" for output and "dat" for input rather than
adding a new "in" register.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Rather than detecting the output method each time in the .set()
callback, do it at probe time and set the appropriate callback.

Changes since v2: moved the reg_dat initialization into
bgpio_setup_io().
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Make sure that we get the register regions with request_mem_region()
before ioremap() to make sure we have exclusive access.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Some platforms may have a number of GPIO that is less than the register
width of the peripheral.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Use the platform drvdata helpers rather than working on the struct
device itself.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Remove endianness/width calculations at runtime by installing function
pointers for bit-to-mask conversion and register accessors.
Reported-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Using C line continuation inside format strings is error prone.
Clean up the unintended whitespace introduced by misuse of \.
Neaten correctly used line continations as well for consistency.

drivers/scsi/arcmsr/arcmsr_hba.c has these errors as well,
but arcmsr needs a lot more work and the driver should likely be
moved to staging instead.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Signed-off-by: NJustin P. Mattock <justinmattock@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The pch_gpio_direction_output() function was missing a write to set the
desired output value.  The function would properly set the GPIO
direction, but not the output value.  The value would have to manually
be set with a follow up call to pch_gpio_set().

Add the missing write so that pch_gpio_direction_output() sets both the
GPIO direction and value.
Signed-off-by: NPeter Tyser <ptyser@xes-inc.com>
Tested-by: NTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

The ioh_gpio_direction_output() function was missing a write to set the
desired output value.  The function would properly set the GPIO
direction, but not the output value.  The value would have to manually
be set with a follow up call to ioh_gpio_set().

Add the missing write so that ioh_gpio_direction_output() sets both the
GPIO direction and value.
Signed-off-by: NPeter Tyser <ptyser@xes-inc.com>
Tested-by: NTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>

If the device fails to respond, then the error path tries to remove an
interrupt that never got registered, which causes an backtrace from the
interrupt handling code.

Fix this by ensuring that the cleanup path has two labels and use the
correct path as needed.

fixes the following error:

WARNING: at kernel/irq/manage.c:908 __free_irq+0x80/0x160()
Trying to free already-free IRQ 0
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This driver is broken in several aspects.

 1) old style irq_chip functions. Sigh

 2) Abuse of the unlock callback. That's not supposed to be a state
    machine for evrything and some more.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

To get rid of port expanders, the free GPIOs of ab8500
can be used. There are 42 GPIO pins. Out of which 16
are interrupt capable.This patch implements 16 virtual
IRQ mapped to 16 interrupt capable AB8500 GPIOs.
Signed-off-by: NBibek Basu <bibek.basu@stericsson.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
[Renamed header file as per MFD structure]
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Converted with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
LKML-Reference: <20110324212509.118888535@linutronix.de>

Converted with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
LKML-Reference: <20110324212509.025730689@linutronix.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>