linux-stable.git/include/linux/leds.h, branch v4.5.3

leds: core: add managed version of led_trigger_register

2016-01-04T08:57:40+00:00

Complementing devm_led_classdev_register add a managed version of
led_trigger_register.

I omit a managed version of led_classdev_unregister as the equivalent
devm_led_classdev_unregister isn't used in the kernel as of today.

Signed-off-by: Heiner Kallweit 
Signed-off-by: Jacek Anaszewski

leds: core: Drivers shouldn't enforce SYNC/ASYNC brightness setting

2016-01-04T08:57:31+00:00

This patch removes SET_BRIGHTNESS_ASYNC and SET_BRIGHTNESS_SYNC flags.
led_set_brightness() now calls led_set_brightness_nosleep() instead of
choosing between sync and async op basing on the flags defined by the
driver.

From now on, if a user wants to make sure that brightness will be set
synchronously, they have to use led_set_brightness_sync() API. It is now
being made publicly available since it has become apparent that it is
a caller who should decide whether brightness is to be set in
a synchronous or an asynchronous way.

Signed-off-by: Jacek Anaszewski 
Acked-by: Sakari Ailus

leds: core: Use set_brightness_work for the blocking op

2016-01-04T08:57:30+00:00

This patch makes LED core capable of setting brightness for drivers
that implement brightness_set_blocking op. It removes from LED class
drivers responsibility for using work queues on their own.

In order to achieve this set_brightness_delayed callback is being
modified to directly call one of available ops for brightness setting.

led_set_brightness_async() function didn't set brightness in an
asynchronous way in all cases. It was mistakenly assuming that all
LED subsystem drivers used work queue in their brightness_set op,
whereas only half of them did that. Since it has no users now,
it is being removed.

Signed-off-by: Jacek Anaszewski 
Acked-by: Sakari Ailus

leds: Rename brightness_set_sync op to brightness_set_blocking

2016-01-04T08:57:30+00:00

The initial purpose of brightness_set_sync op, introduced along with
the LED flash class extension, was to add a means for setting torch LED
brightness as soon as possible, which couldn't have been guaranteed by
brightness_set op. This patch renames the op to brightness_set_blocking,
which describes its purpose in a more generic way. It is beneficial
in view of the prospective changes in the LED core, aiming at removing
the need for using work queues in LED class drivers that can sleep
or use delays while setting brightness.

Signed-off-by: Jacek Anaszewski 
Acked-by: Andrew Lunn 
Acked-by: Pavel Machek 
Acked-by: Sakari Ailus

leds: core: Add two new LED_BLINK_ flags

2016-01-04T08:57:30+00:00

This patch adds LED_BLINK_BRIGHTNESS_CHANGE flag to indicate that blink
brightness has changed, and LED_BLINK_DISABLE flag to indicate that
blinking deactivation has been requested. In order to use the flags
led_timer_function and set_brightness_delayed callbacks as well as
led_set_brightness() function are being modified. The main goal of these
modifications is to prepare set_brightness_work for extension of the
scope of its responsibilities.

Signed-off-by: Jacek Anaszewski 
Acked-by: Pavel Machek 
Acked-by: Sakari Ailus

arcnet: com20020-pci: add led trigger support

2015-10-26T08:10:56+00:00

The EAE PLX-PCI card has special leds on the the main io pci resource
bar. This patch adds support to trigger the conflict and data leds with
the packages.

Signed-off-by: Michael Grzeschik

leds: unify the location of led-trigger API

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

Part of led-trigger API was in the private drivers/leds/leds.h header.
Move it to the include/linux/leds.h header to unify the API location
and announce it as public. It has been already exported from
led-triggers.c with EXPORT_SYMBOL_GPL macro. The no-op definitions are
changed from macros to inline to match the style of the surrounding code.

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

leds: flash: Remove synchronized flash strobe feature

2015-03-10T00:16:23+00:00

Synchronized flash strobe feature has been considered not fitting
for LED subsystem sysfs interface and thus is being removed.

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

leds: Introduce devres helper for led_classdev_register

2015-03-09T20:43:41+00:00

(cooloney@gmail.com: add _unregister function into the document)

Suggested-by: Stephen Boyd 
Signed-off-by: Bjorn Andersson 
Signed-off-by: Bryan Wu

leds: Add LED Flash class extension to the LED subsystem

2015-01-26T22:59:08+00:00

Some LED devices support two operation modes - torch and flash.
This patch provides support for flash LED devices in the LED subsystem
by introducing new sysfs attributes and kernel internal interface.
The attributes being introduced are: flash_brightness, flash_strobe,
flash_timeout, max_flash_timeout, max_flash_brightness, flash_fault,
flash_sync_strobe and available_sync_leds. All the flash related
features are placed in a separate module.

The modifications aim to be compatible with V4L2 framework requirements
related to the flash devices management. The design assumes that V4L2
sub-device can take of the LED class device control and communicate
with it through the kernel internal interface. When V4L2 Flash sub-device
file is opened, the LED class device sysfs interface is made
unavailable.

Signed-off-by: Jacek Anaszewski 
Acked-by: Kyungmin Park 
Cc: Richard Purdie 
Acked-by: Pavel Machek 
Signed-off-by: Bryan Wu