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Subject[PATCH 0/4] Add a generic driver for LED-based backlight
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:

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 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


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