Messages in this thread | | | From | Jean-Jacques Hiblot <> | Subject | [PATCH 0/4] Add a generic driver for LED-based backlight | Date | Mon, 1 Jul 2019 17:14:19 +0200 |
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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.
This series takes it from there and implements the binding that was discussed in https://patchwork.kernel.org/patch/7293991/. In this new binding the backlight device is a child of the LED controller instead of being another platform device that uses a phandle to reference a LED.
Jean-Jacques Hiblot (2): leds: of: create a child device if the LED node contains a "compatible" string devicetree: Update led binding
Tomi Valkeinen (2): backlight: add led-backlight driver devicetree: Add led-backlight binding
.../devicetree/bindings/leds/common.txt | 3 + .../video/backlight/led-backlight.txt | 39 ++++ drivers/leds/led-class.c | 16 ++ drivers/video/backlight/Kconfig | 7 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/led_bl.c | 217 ++++++++++++++++++ include/linux/leds.h | 11 + 7 files changed, 294 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/backlight/led-backlight.txt create mode 100644 drivers/video/backlight/led_bl.c
-- 2.17.1
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