Commit Graph

218 Commits

Author SHA1 Message Date
Roland Stigge
6e20fb1805 drivers/gpio/pca953x.c: add a mutex to fix race condition
Add a mutex to register communication and handling.  Without the mutex,
GPIOs didn't switch as expected when toggled in a fast sequence of
status changes of multiple outputs.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Marc Zyngier <maz@misterjones.org>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-02-11 16:12:20 -08:00
Feng Tang
0766d20fdb langwell_gpio: modify EOI handling following change of kernel irq subsystem
Latest kernel has many changes in IRQ subsystem and its interfaces, like
adding "irq_eoi" for struct irq_chip, this patch is a follow up change
for that.

Also remove the unnecessary cast for a "void *".

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Alek Du <alek.du@intel.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-26 10:49:59 +10:00
Linus Torvalds
822e5215f9 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (59 commits)
  mfd: ab8500-core chip version cut 2.0 support
  mfd: Flag WM831x /IRQ as a wake source
  mfd: Convert WM831x away from legacy I2C PM operations
  regulator: Support MAX8998/LP3974 DVS-GPIO
  mfd: Support LP3974 RTC
  i2c: Convert SCx200 driver from using raw PCI to platform device
  x86: OLPC: convert olpc-xo1 driver from pci device to platform device
  mfd: MAX8998/LP3974 hibernation support
  mfd/ab8500: remove spi support
  mfd: Remove ARCH_U8500 dependency from AB8500
  misc: Make AB8500_PWM driver depend on U8500 due to PWM breakage
  mfd: Add __devexit annotation for vx855_remove
  mfd: twl6030 irq_data conversion.
  gpio: Fix cs5535 printk warnings
  misc: Fix cs5535 printk warnings
  mfd: Convert Wolfson MFD drivers to use irq_data accessor function
  mfd: Convert TWL4030 to new irq_ APIs
  mfd: Convert tps6586x driver to new irq_ API
  mfd: Convert tc6393xb driver to new irq_ APIs
  mfd: Convert t7166xb driver to new irq_ API
  ...
2011-01-14 09:08:00 -08:00
Lennert Buytenhek
7f5db6a802 gpio: timbgpio: Fix up irq_data conversion breakage.
Commit a1f5f22adc ("gpio: timbgpio:
irq_data conversion") was slightly too enthusiastic in converting
timbgpio_irq() over to take an irq_data * argument instead of an
unsigned int irq argument, as it is a flow handler, which still take
IRQ numbers for now.  (And on top of that, it was using the wrong
accessors.)

This fixes it up, and seems to build without warnings.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-14 08:13:13 -08:00
Joe Perches
1db0b427ee gpio: Fix cs5535 printk warnings
drivers/gpio/cs5535-gpio.c: In function 'cs5535_gpio_probe':
drivers/gpio/cs5535-gpio.c:269: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t'
drivers/gpio/cs5535-gpio.c:269: warning: format '%x' expects type 'unsigned int', but argument 4 has type 'resource_size_t'

Use vsprintf extension %pR to format resource.

Original-patch-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-01-14 12:38:11 +01:00
Andres Salomon
ec9d0cf578 gpio/misc: Add MODULE_ALIAS entries for CS5535 functions
This adds MODULE_ALIAS entries to the various cs5535 subdevice modules; this
allows the modules to automatically be loaded when cs5535-mfd loads.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-01-14 12:37:45 +01:00
Andres Salomon
df96669401 gpio: Convert cs5535 from pci device to platform device
The cs5535-mfd driver now takes care of the PCI BAR handling; this
simplifies the gpio driver a lot.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-01-14 12:37:44 +01:00
Linus Torvalds
66dc918d42 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (348 commits)
  ALSA: hda - Fix NULL-derefence with a single mic in STAC auto-mic detection
  ALSA: hda - Add missing NID 0x19 fixup for Sony VAIO
  ALSA: hda - Fix ALC275 enable hardware EQ for SONY VAIO
  ALSA: oxygen: fix Xonar DG input
  ALSA: hda - Fix EAPD on Lenovo NB ALC269 to low
  ALSA: hda - Fix missing EAPD for Acer 4930G
  ALSA: hda: Disable 4/6 channels on some NVIDIA GPUs.
  ALSA: hda - Add static_hdmi_pcm option to HDMI codec parser
  ALSA: hda - Don't refer ELD when unplugged
  ASoC: tpa6130a2: Fix compiler warning
  ASoC: tlv320dac33: Add DAPM selection for LOM invert
  ASoC: DMIC codec: Adding a generic DMIC codec
  ALSA: snd-usb-us122l: Fix missing NULL checks
  ALSA: snd-usb-us122l: Fix MIDI output
  ASoC: soc-cache: Fix invalid memory access during snd_soc_lzo_cache_sync()
  ASoC: Fix section mismatch in wm8995.c
  ALSA: oxygen: add S/PDIF source selection for Claro cards
  ALSA: oxygen: fix CD/MIDI for X-Meridian (2G)
  ASoC: fix migor audio build
  ALSA: include delay.h for msleep in Xonar DG support
  ...
2011-01-13 10:32:54 -08:00
Tomoya MORINAGA
49a367937f gpio/ml_ioh_gpio: ML7213 GPIO driver
ML7213 is a companion chip for Intel Atom E6xx series.  This driver can be
used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output Hub) which is for
IVI(In-Vehicle Infotainment) use.  This driver can access the IOH's GPIO
device.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Rabin Vincent <rabin.vincent@stericsson.com>
Cc: Marc Zyngier <maz@misterjones.org>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Randy Dunlap
32518863b4 GPIO_VX855: eliminate kconfig dependency warning
Fix kconfig dependency warning to satisfy dependencies:

warning: (GPIO_VX855 && GPIOLIB) selects MFD_VX855 which has unmet direct dependencies (MFD_SUPPORT && PCI)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Daniel Drake <dsd@laptop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Randy Dunlap
6f7ab5246d GPIO_RDC321X: select MFD_SUPPORT to squelch kconfig warning
Fix kconfig dependency warning to satisfy dependencies:

warning: (GPIO_RDC321X && PCI && GPIOLIB) selects MFD_RDC321X which has unmet direct dependencies (MFD_SUPPORT && PCI)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Lennert Buytenhek
67d15ed7df gpio: vr41xx_giu: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Cc: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Lennert Buytenhek
a1f5f22adc gpio: timbgpio: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Cc: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Lennert Buytenhek
33fcc1b802 gpio: tc35892-gpio: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Lennert Buytenhek
673860c107 gpio: sx150x: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Cc: Gregory Bean <gbean@codeaurora.org>
Tested-by: Rohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:14 -08:00
Lennert Buytenhek
2a866f3914 gpio: stmpe-gpio: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Rabin Vincent <rabin.vincent@stericsson.com>
Cc: Luotao Fu <l.fu@pengutronix.de>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Lennert Buytenhek
b2221869db gpio: pl061: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Lennert Buytenhek
6f5cfc0e2d gpio: pca953x: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Cc: Alek Du <alek.du@intel.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Lennert Buytenhek
fbc4667ab0 gpio: max732x: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: Marc Zyngier <maz@misterjones.org>
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Lennert Buytenhek
5ffd72c674 gpio: langwell_gpio: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Yin Kangkai <kangkai.yin@intel.com>
Cc: Alek Du <alek.du@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Lennert Buytenhek
12401eeddd gpio: adp5588-gpio: irq_data conversion
Converts irq_chips and flow handlers over to the new struct irq_data based
irq_chip functions.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Acked-by: "Hennerich, Michael" <Michael.Hennerich@analog.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Andres Salomon
1b912c1bca drivers/gpio/cs5535-gpio.c: add some additional cs5535-specific GPIO functionality
This adds (well, re-adds actually) handling for events/IRQs through cs5535
GPIOs.  In the wild and wooly world of CS5535, setup_event() is for
assigning an IRQ to a GPIO filter/event pair, and set_irq() sets up the
pair to trigger IRQs.

These should really only be used in highly platform-specific drivers (such
as OLPC's DCON driver).  Sadly, because set_irq() uses MSRs, this causes
the driver to become X86-specific.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Daniel Drake <dsd@laptop.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:13 -08:00
Takashi Iwai
6db9a0f326 Merge branch 'topic/asoc' into for-linus 2011-01-13 08:37:24 +01:00
Russell King
404a02cbd2 Merge branch 'devel-stable' into devel
Conflicts:
	arch/arm/mach-pxa/clock.c
	arch/arm/mach-pxa/clock.h
2011-01-06 22:33:32 +00:00
Russell King
cde9efef40 Merge branch 'ux500-core' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into devel-stable 2011-01-03 10:31:58 +00:00
Andres Salomon
44658a11f3 cs5535-gpio: handle GPIO regs where higher (clear) bits are set
The default for non-READ_BACK GPIO regs is to have the clear bits set;
this means that our original errata fix was too simplistic.  This
changes it to the following behavior:

 - when setting GPIOs, ignore the higher order bits (they're for
   clearing, we don't need to care about them).

 - when clearing GPIOs, keep all the bits, but unset (via XOR) the
   lower order bit that negates the clear bit that we care about.  That
   is, if we're clearing GPIO 26 (val = 0x04000000), we first XOR what's
   currently in the register with 0x0400 (GPIO 26's SET bit), and then
   OR that with the GPIO 26's CLEAR bit.

Tested-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-23 15:31:48 -08:00
Andres Salomon
0018516593 cs5535-gpio: don't apply errata #36 to edge detect GPIOs
The edge detect status GPIOs function differently from the other atomic
model CS5536 GPIO registers; writing 1 to the high bits clears the GPIO,
but writing 1 to the lower bits also clears the bit.

This means that read-modify-write doesn't actually work for it, so don't
apply the errata here.  If a negative edge status gets lost after
resume..  well, we tried our best!

Tested-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-23 15:31:48 -08:00
Linus Torvalds
ca5f73a05e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: Support additional parent IDs for wm831x
  mfd: Fix ab8500-core interrupt ffs bit bug
  mfd: Supply IRQ base for WM832x devices
  watchdog: Fix null pointer dereference while accessing rdc321x platform_data
  gpio: Fix null pointer dereference while accessing rdc321x platform_data
2010-12-22 19:47:04 -08:00
Aaro Koskinen
e254811c20 gpiolib: gpio_request_one(): add missing gpio_free()
If GPIO request succeeds, but configuration fails, it should be released.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: Eric Miao <eric.miao@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22 19:43:33 -08:00
Florian Fainelli
fa6469cb5b gpio: Fix null pointer dereference while accessing rdc321x platform_data
rdc321x-gpio currently fetches its driver specific data by using the
platform_device->platform_data pointer, this is wrong because the mfd
device which registers our platform_device has been added using
mfd_add_device() which sets the platform_device->driver_data pointer
instead.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
CC: stable@kernel.org
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-12-22 12:05:20 +01:00
Sundar Iyer
20406ebff4 mfd/tc3589x: rename tc35892 structs/registers to tc359x
Most of the register layout, client IRQ numbers on the TC35892 is shared also
by other variants. Make this generic as tc3589x

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
2010-12-19 19:27:46 +01:00
Sundar Iyer
f4e8afdc7a mfd/tc35892: rename tc35892 core driver to tc3589x
Rename the tc35892 core/gpio drivers to tc3589x to include
new variants in the same mfd core

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
2010-12-19 19:27:42 +01:00
Sundar Iyer
c6eda6c5ee mfd/tc35892: rename tc35892 header to tc3589x
Rename the header file to include further variants within
the same mfd core driver

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
2010-12-19 19:27:39 +01:00
Takashi Iwai
20aeeb356b Merge branch 'topic/workq-update' into topic/asoc
Conflicts:
	sound/soc/codecs/wm8350.c
	sound/soc/codecs/wm8753.c
	sound/soc/sh/fsi.c
	sound/soc/soc-core.c
2010-12-13 09:28:43 +01:00
Andres Salomon
853ff88324 cs5535-gpio: apply CS5536 errata workaround for GPIOs
The AMD Geode CS5536 Companion Device Silicon Revision B1 Specification
Update mentions the follow as issue #36:

 "Atomic write transactions to the atomic GPIO High Bank Feature Bit
  registers should only affect the bits selected [...]"

 "after Suspend, an atomic write transaction [...] will clear all
  non-selected bits of the accessed register."

In other words, writing to the high bank for a single GPIO bit will
clear every other GPIO bit (but only sometimes after a suspend).

The workaround described is obvious and simple; do a read-modify-write.
This patch does that, and documents why we're doing it.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-02 14:51:15 -08:00
Mark Brown
4b66672901 gpiolib: Add WM8958 support to the WM8994 driver
Several of the GPIOs on the WM8994 are fixed function on the WM8958 so
error out if the user tries to request them with gpiolib.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-26 15:16:19 +00:00
Daniel Drake
99ea2626a7 gpio: Add VIA VX855 GPIO driver
This is needed for supporting the upcoming VX855 camera and OLPC DCON
drivers, as well as the advanced viafb features on non-OLPC hardware
based on this chip.

Based on earlier work by Harald Welte.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29 00:29:51 +02:00
Vasiliy Kulikov
02bf074923 gpio: Fix stmpe error path
Free allocated memory.  Call stmpe_disable() if it was enabled.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29 00:29:32 +02:00
Virupax Sadashivpetimath
f4ebcab360 gpio: Handle stmpe-gpio platform data with no gpio base
This patch removes the requirement that gpio base be supplied in
platform data.

Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29 00:29:18 +02:00
Wolfram Sang
b8e9cf0b28 gpio: Add bitmask to block requests to unavailable stmpe GPIOs
GPIOs on these controller are multi-functional. If you decided to use
some of them e.g. as input channels for the ADC, you surely don't want
those pins to be reassigned as simple GPIOs (which may be triggered even
from userspace via 'export'). Same for the touchscreen controller pins.
Since knowledge about the hardware is needed to decide which GPIOs to
reserve, let this bitmask be inside platform_data and provide some
defines to assist potential users.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Rabin Vincent <rabin.vincent@stericsson.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29 00:28:43 +02:00
Mark Brown
deb26e92f9 gpiolib: Hook up WM8994 gpio_to_irq()
Not sure where this went.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-10-29 00:28:39 +02:00
Alan Cox
72b4379e95 langwell_gpio: add support for whitney point
In this case the logic is very similar but the IRQs are not exposed and
the device is not picked up via PCI

Based on a separate internal whitney point driver by Yin Kangkai.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: Yin Kangkai <kangkai.yin@intel.com>
Cc: Alek Du <alek.du@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:07 -07:00
Andrew Morton
fd0574cb54 drivers/gpio/langwell_gpio.c: remove semicolons after function definitions
Deweird this driver.

Cc: Alek Du <alek.du@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:07 -07:00
Tomoya MORINAGA
04c17aa893 gpio: add Topcliff PCH GPIO driver
Topcliff PCH is the platform controller hub that is going to be used in
Intel's upcoming general embedded platform.  All IO peripherals in
Topcliff PCH are actually devices sitting on AMBA bus.  Topcliff PCH has
GPIO I/F.  Using this I/F, it is able to access system devices connected
to GPIO.

[akpm@linux-foundation.org: ese DEFINE_PCI_DEVICE_TABLE (per Joe Perches)]
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Rabin Vincent <rabin.vincent@stericsson.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Tomoya MORINAGA <morinaga526@dsn.okisemi.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:07 -07:00
Michael Hennerich
459773ae8d gpio: adp5588-gpio: support interrupt controller
Implement irq_chip functionality on ADP5588/5587 GPIO expanders.  Only
level sensitive interrupts are supported.  Interrupts provided by this
irq_chip must be requested using request_threaded_irq().

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:07 -07:00
Miguel Gaio
ead6db0843 gpio: add support for 74x164 serial-in/parallel-out 8-bit shift register
Add support for generic 74x164 serial-in/parallel-out 8-bits shift
register.  This driver can be used as a GPIO output expander.

[akpm@linux-foundation.org: remove unused local `refresh']
Signed-off-by: Miguel Gaio <miguel.gaio@efixo.com>
Signed-off-by: Juhos Gabor <juhosg@openwrt.org>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:07 -07:00
Tomas Hallenberg
76d800a5b6 gpio: timbgpio: use a copy of the IER register to avoid it being trashed
Some versions of the hardware can trash the IER register if simultaneous
interrupts occur.  This patch works around it by using a local copy of the
register and restoring it after every interrupt.

Signed-off-by: Tomas Hallenberg <tomas.hallenberg@pelagicore.com>
Acked-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:07 -07:00
Anton Vorontsov
aeec56e331 gpio: add driver for basic memory-mapped GPIO controllers
The basic GPIO controllers may be found in various on-board FPGA and ASIC
solutions that are used to control board's switches, LEDs, chip-selects,
Ethernet/USB PHY power, etc.

These controllers may not provide any means of pin setup
(in/out/open drain).

The driver supports:
- 8/16/32/64 bits registers;
- GPIO controllers with clear/set registers;
- GPIO controllers with a single "data" register;
- Big endian bits/GPIOs ordering (mostly used on PowerPC).

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>,
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:06 -07:00
Alek Du
8a233f01b7 pca953x: pca953x driver fixes for x86 mrst
Our Moorestown platform has two max7315 chips which is covered by pca953x
i2c gpio driver.

A while ago this driver got updated with nested irq thread support, and it
broke the compatibity with "request_irq".  For example, the gpio_keys.c
driver can not work with this driver now.  This patch fixes the issue by
switching to generic_handle_irq.

Also fix the irq_base issue: irq_base == 0 is valid, and a "-1" value
should mean invalid. IRQ 0 is not a valid IRQ, irq_base of 0 is valid.

Signed-off-by: Alek Du <alek.du@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-26 16:52:15 -07:00
Linus Torvalds
51f00a471c Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6
* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  mtd/m25p80: add support to parse the partitions by OF node
  of/irq: of_irq.c needs to include linux/irq.h
  of/mips: Cleanup some include directives/files.
  of/mips: Add device tree support to MIPS
  of/flattree: Eliminate need to provide early_init_dt_scan_chosen_arch
  of/device: Rework to use common platform_device_alloc() for allocating devices
  of/xsysace: Fix OF probing on little-endian systems
  of: use __be32 types for big-endian device tree data
  of/irq: remove references to NO_IRQ in drivers/of/platform.c
  of/promtree: add package-to-path support to pdt
  of/promtree: add of_pdt namespace to pdt code
  of/promtree: no longer call prom_ functions directly; use an ops structure
  of/promtree: make drivers/of/pdt.c no longer sparc-only
  sparc: break out some PROM device-tree building code out into drivers/of
  of/sparc: convert various prom_* functions to use phandle
  sparc: stop exporting openprom.h header
  powerpc, of_serial: Endianness issues setting up the serial ports
  of: MTD: Fix OF probing on little-endian systems
  of: GPIO: Fix OF probing on little-endian systems
2010-10-25 08:19:14 -07:00