linux-toradex.git/drivers/gpio, branch v2.6.32.50

gpiolib: Actually set output state in wm831x_gpio_direction_output()

2010-03-15T15:49:57+00:00

commit 3383d23d86791503559cb87837491af37469d9e5 upstream.

wm831x_gpio_direction_output() ignored the state passed into it.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz 
Signed-off-by: Greg Kroah-Hartman

gpio: Langwell GPIO driver bugfixes

2009-12-02T00:32:19+00:00

- Remove wrong and unnecessary unmask operation

- Remove extra GEDR reading

This fixes the loss of interrupts which occurs when two or more pins are
triggered in close succession.

Signed-off-by: Alek Du 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gpiolib: fix device_create() result check

2009-11-12T15:26:00+00:00

In case of failure, device_create() returns not NULL but the error code.
The current code checks for non-NULL though which causes kernel oops in
sysfs_create_group() when device_create() fails.  Check for error using
IS_ERR() and propagate the error value using PTR_ERR() instead of fixed
-ENODEV code returned now...

Signed-off-by: Sergei Shtylyov 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

twl4030-gpio: remove __devexit markings from remove func

2009-10-29T14:39:30+00:00

The gpio_twl4030_probe() function calls gpio_twl4030_remove(), and the
former has __devinit, so the latter cannot use __devexit.  Otherwise we
hit the section mismatch warning:

WARNING: drivers/gpio/built-in.o(.devinit.text+0x71a): Section mismatch
	in reference from the function _gpio_twl4030_probe() to the function
	.devexit.text:_gpio_twl4030_remove()
The function __devinit _gpio_twl4030_probe() references a function
	__devexit _gpio_twl4030_remove().
This is often seen when error handling in the init function uses
	functionality in the exit path.
The fix is often to remove the __devexit annotation of
	_gpio_twl4030_remove() so it may be used outside an exit section.

Signed-off-by: Mike Frysinger 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

const: constify remaining file_operations

2009-10-01T23:11:11+00:00

[akpm@linux-foundation.org: fix KVM]
Signed-off-by: Alexey Dobriyan 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

2009-09-23T16:30:48+00:00

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Clearly mark ACPI drivers as such
  i2c: Add driver for SMBus Control Method Interface
  i2c-pnx: Correct use of request_region/request_mem_region
  MAINTAINERS: Add maintainer for AT24 and PCA9564/PCA9665
  i2c-piix4: Add AMD SB900 SMBus device ID
  i2c/chips: Remove deprecated pcf8574 driver
  i2c/chips: Remove deprecated pca9539 driver
  i2c/chips: Remove deprecated pcf8575 driver
  gpio/pcf857x: Copy i2c_device_id from old pcf8574 driver
  i2c/scx200_acb: Provide more information on bus errors
  i2c: Provide compatibility links for i2c adapters
  i2c: Convert i2c adapters to bus devices
  i2c: Convert i2c clients to a device type
  i2c/tsl2550: Use combined SMBus transactions
  i2c-taos-evm: Switch echo off to improve performance
  i2c: Drop unused i2c_driver.id field

gpio: gpio support for ADP5520/ADP5501 MFD PMICs

2009-09-23T14:39:48+00:00

Signed-off-by: Michael Hennerich 
Signed-off-by: Bryan Wu 
Signed-off-by: Mike Frysinger 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gpiolib: allow poll() on value

2009-09-23T14:39:48+00:00

Many gpio chips allow to generate interrupts when the value of a pin
changes.  This patch gives usermode application the opportunity to make
use of this feature by calling poll(2) on the /sys/class/gpio/gpioN/value
sysfs file.  The edge to trigger can be set in the edge file in the same
directory.  Possible values are "none", "rising", "falling", and "both".

Using level triggers is not possible with current sysfs since nothing
changes the GPIO value (and the IRQ keeps triggering).  Edge triggering
will "just work".  Note that if there was an event between read() and
poll(), the poll() returns immediately.

Also note that this version only supports true GPIO interrupts.  Some
later patch might be able to synthesize this behavior by timer-driven
polling; some systems seem to need that.

[dbrownell@users.sourceforge.net: align ids to 16 bit ids; whitespace]
Signed-off-by: Daniel Glöckner 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gpio: include not

2009-09-23T14:39:48+00:00

Drivers should be including  not .

Signed-off-by: H Hartley Sweeten 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gpio: pca953x: add support for MAX7315

2009-09-23T14:39:48+00:00

MAX7315 is pin and software compatible with PCA9534, so add it to the I2C
device ID table of pca953x driver.
http://www.datasheetcatalog.org/datasheet/maxim/MAX7315.pdf

Signed-off-by: Alek Du 
Acked-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds