user/sven/linux.git/include/linux/leds.h, branch v4.2.4

leds: unify the location of led-trigger API

2015-05-04T18:05:55Z

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

2015-03-10T00:16:23Z

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

2015-03-09T20:43:41Z

(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

2015-01-26T22:59:08Z

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

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

2014-12-16T02:28:25Z

Pull LED subsystem update from Bryan Wu: "We got some cleanup and driver for LP8860 as well as some patches for LED Flash Class" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: leds: lp8860: Fix module dependency leds: lp8860: Introduce TI lp8860 4 channel LED driver leds: Add support for setting brightness in a synchronous way leds: implement sysfs interface locking mechanism leds: syscon: handle multiple syscon instances leds: delete copy/paste mistake leds: regulator: Convert to devm_regulator_get_exclusive

leds: Add support for setting brightness in a synchronous way

2014-11-14T22:29:35Z

There are use cases when setting a LED brightness has to have immediate effect (e.g. setting a torch LED brightness). This patch extends LED subsystem to support such operations. The LED subsystem internal API __led_set_brightness is changed to led_set_brightness_async and new led_set_brightness_sync API is added. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Richard Purdie Signed-off-by: Bryan Wu

leds: implement sysfs interface locking mechanism

2014-11-14T22:29:35Z

Add a mechanism for locking LED subsystem sysfs interface. This patch prepares ground for addition of LED Flash Class extension, whose API will be integrated with V4L2 Flash API. Such a fusion enforces introducing a locking scheme, which will secure consistent access to the LED Flash Class device. The mechanism being introduced allows for disabling LED subsystem sysfs interface by calling led_sysfs_disable function and enabling it by calling led_sysfs_enable. The functions alter the LED_SYSFS_DISABLE flag state and must be called under mutex lock. The state of the lock is checked with use of led_sysfs_is_disabled function. Such a design allows for providing immediate feedback to the user space on whether the LED Flash Class device is available or is under V4L2 Flash sub-device control. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Richard Purdie Signed-off-by: Bryan Wu

leds: leds-gpio: Convert gpio_blink_set() to use GPIO descriptors

2014-11-04T20:58:25Z

Commit 21f2aae91e902aad ("leds: leds-gpio: Add support for GPIO descriptors") already converted most of the driver to use GPIO descriptors. What is still missing is the platform specific hook gpio_blink_set() and board files which pass legacy GPIO numbers to this driver in platform data. In this patch we handle the former and convert gpio_blink_set() to take GPIO descriptor instead. In order to do this we convert the existing four users to accept GPIO descriptor and translate it to legacy GPIO number in the platform code. This effectively "pushes" legacy GPIO number usage from the driver to platforms. Also add comment to the remaining block describing that it is legacy code path and we are getting rid of it eventually. Suggested-by: Linus Walleij Signed-off-by: Mika Westerberg Acked-by: Andrew Lunn Reviewed-by: Linus Walleij Acked-by: Alexandre Courbot Signed-off-by: Rafael J. Wysocki

leds: leds-gpio: Add support for GPIO descriptors

2014-11-04T20:58:22Z

GPIO descriptors are the preferred way over legacy GPIO numbers nowadays. Convert the driver to use GPIO descriptors internally but still allow passing legacy GPIO numbers from platform data to support existing platforms. Signed-off-by: Mika Westerberg Acked-by: Alexandre Courbot Acked-by: Bryan Wu Acked-by: Arnd Bergmann Acked-by: Grant Likely Signed-off-by: Rafael J. Wysocki

leds: Improve and export led_update_brightness

2014-09-12T21:01:54Z

led_update_brightness helper function used to be exploited only locally in the led-class.c module, where its result was being passed to the brightness_show sysfs callback. With the introduction of v4l2-flash subdevice the same functionality becomes required for reading current brightness from a LED device. This patch adds checking of return value of the brightness_get callback and moves the led_update_brightness() function to the LED subsystem public API. Signed-off-by: Jacek Anaszewski Acked-by: Kyungmin Park Cc: Richard Purdie Signed-off-by: Bryan Wu