This series aims to add a led-backlight driver, similar to pwm-backlight, but using a LED class device underneath. A few years ago (2015), Tomi Valkeinen posted a series implementing a backlight driver on top of a LED device: https://patchwork.kernel.org/patch/7293991/ https://patchwork.kernel.org/patch/7294001/ https://patchwork.kernel.org/patch/7293981/ The discussion stopped because Tomi lacked the time to work on it. The series affects the LED core and add a new backlight driver. changes in v2: - bkl: the backlight can use more than one LED. As a consequence don't make the backlight device a child of a LED controller. - bkl: make brightness-levels and default-brightness-level optional - bkl: removed the option to use a GPIO enable. - bkl: removed the option to use a regulator. It should be handled by the LED core - led: removed the mechanism to bind a child device for each LED - led: improve the way of_get_led() works and add a managed version of it Jean-Jacques Hiblot (2): leds: Add managed API to get a LED from a device driver dt-bindings: backlight: Add led-backlight binding Tomi Valkeinen (2): leds: Add of_led_get() and led_put() backlight: add led-backlight driver .../bindings/leds/backlight/led-backlight.txt | 29 +++ drivers/leds/led-class.c | 92 +++++++ drivers/video/backlight/Kconfig | 7 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/led_bl.c | 235 ++++++++++++++++++ include/linux/leds.h | 6 + 6 files changed, 370 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/led-backlight.txt create mode 100644 drivers/video/backlight/led_bl.c -- 2.17.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
