linux-toradex.git/drivers/leds/leds-gpio.c, branch v4.8-rc1

leds: leds-gpio: Set of_node for created LED devices

2016-07-11T08:15:03+00:00

When working with Device Tree we iterate over children of "gpio-leds"
compatible node and create LED device for each of them. We take care of
all common DT properties (label, default trigger, state, etc.), however
some triggers may want to support more of them.

It could be useful for timer trigger to support setting delay on/off
values with Device Tree property. Or for transient trigger to support
e.g. duration property.

We obviously should handle such properties in triggers, not in generic
code. To let trigger drivers read properties from DT node we need to set
of_node to point the relevant node. This change allows using all kind of
of helpers in e.g. "activate" callbacks.

Signed-off-by: Rafał Miłecki 
Signed-off-by: Jacek Anaszewski

leds: gpio: Support the "panic-indicator" firmware property

2016-05-06T08:26:07+00:00

Calling a GPIO LEDs is quite likely to work even if the kernel
has paniced, so they are ideal to blink in this situation.
This commit adds support for the new "panic-indicator"
firmware property, allowing to mark a given LED to blink on
a kernel panic.

Signed-off-by: Ezequiel Garcia 
Reviewed-by: Matthias Brugger 
Acked-by: Pavel Machek 
Signed-off-by: Jacek Anaszewski

leds: gpio: Use GPIOF_OUT_INIT_LOW instead of hardcoded zero

2016-03-14T08:22:21+00:00

Use the GPIO flag definition instead of a numeric literal, so the casual
reader grepping for GPIOF_ will find the GPIO flags used.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Jacek Anaszewski

leds: leds-gpio: Fix return value check in create_gpio_led()

2016-03-14T08:22:20+00:00

In case of error, the function gpio_to_desc() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.

Signed-off-by: Wei Yongjun 
Signed-off-by: Jacek Anaszewski

leds: gpio: Remove work queue

2016-01-04T08:57:35+00:00

Now the core implements the work queue, remove it from the drivers,
and switch to using brightness_set_blocking op.

Signed-off-by: Jacek Anaszewski 
Cc: Raphael Assenat

leds: leds-gpio: add shutdown function

2015-11-03T07:59:48+00:00

add a shutdown function for setting the gpio-leds
into off state when shuting down.

Signed-off-by: Heiko Schocher 
Signed-off-by: Jacek Anaszewski

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds

2015-07-02T02:09:11+00:00

Pull LED subsystem updates from Bryan Wu:
 "In this cycle, we finished to merge patches for LED Flash class
  driver.

  Other than that we have some bug fixes and new drivers for LED
  controllers"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (33 commits)
  leds:lp55xx: fix firmware loading error
  leds: fix max77693-led build errors
  leds: fix aat1290 build errors
  leds: aat1290: pass flags parameter to devm_gpiod_get
  leds: ktd2692: pass flags parameter to devm_gpiod_get
  drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c
  leds: aat1290: add support for V4L2 Flash sub-device
  DT: aat1290: Document handling external strobe sources
  leds: max77693: add support for V4L2 Flash sub-device
  media: Add registration helpers for V4L2 flash sub-devices
  v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
  Documentation: leds: Add description of v4l2-flash sub-device
  leds: add BCM6358 LED driver
  leds: add DT binding for BCM6358 LED controller
  leds: fix brightness changing when software blinking is active
  Documentation: leds-lp5523: describe master fader attributes
  leds: lp5523: add master_fader support
  leds: leds-gpio: Allow compile test if !GPIOLIB
  leds: leds-gpio: Add missing #include 
  gpiolib: Add missing dummies for the unified device properties interface
  ...

ACPI / OF: Rename of_node() and acpi_node() to to_of_node() and to_acpi_node()

2015-06-24T18:03:10+00:00

Commit 8a0662d9 introduced of_node and acpi_node symbols in global namespace
but there were already ~63 of_node local variables or function parameters
(no single acpi_node though, but anyway).

After debugging undefined but used of_node local varible (which turned out
to reference static function of_node() instead) it became clear that the names
for the functions are too short and too generic for global scope.

Signed-off-by: Alexander Sverdlin 
Signed-off-by: Rafael J. Wysocki

leds: leds-gpio: Add missing #include

2015-05-25T20:26:45+00:00

Signed-off-by: Geert Uytterhoeven 
Acked-by: Jacek Anaszewski 
Signed-off-by: Bryan Wu

leds: gpio: Fix error handling for led name null pointer case

2015-05-04T18:05:55+00:00

Make sure that already registered LEDs will be torn down properly
if the name of the next LED to create is unavailable.

Signed-off-by: Jacek Anaszewski 
Cc: Richard Purdie 
Signed-off-by: Bryan Wu