Hi!
This patch adds a led-backlight driver (led_bl), which is similar to pwm_bl except the driver uses a LED class driver to adjust the brightness in the HW. Multiple LEDs can be used for a single backlight.
Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com Acked-by: Pavel Machek pavel@ucw.cz Reviewed-by: Daniel Thompson daniel.thompson@linaro.org Acked-by: Lee Jones lee.jones@linaro.org Acked-by: Tony Lindgren tony@atomide.com Tested-by: Tony Lindgren tony@atomide.com Signed-off-by: Pavel Machek pavel@ucw.cz
drivers/video/backlight/Kconfig | 7 ++ drivers/video/backlight/Makefile | 1 + drivers/video/backlight/led_bl.c | 260 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 268 insertions(+) create mode 100644 drivers/video/backlight/led_bl.c
Here's the version of the driver I have. AFAICT default-brightness-level handling is ok, so does not need to be changed.
Lee, it would be easiest for me if you could apply it to your tree and push, but given enough time I can push it to Linus, too.
Oh you're using quoted-printable for patches.. Got it applied now, and it still works. Below is also the related dts change that I tested with.
Feel free to pick the dts change too, naturally that should not be applied before the driver.
If you guys instead want me to pick these both into my fixes branch, just let me know and I'll do the explaining why these are needed as fixes. Basically we no longer have a way to enable the LCD backlight for droid4 manually starting with v5.6-rc1 unlike earlier.
If you are willing to do that, it looks like good solution from my point of view.
Thanks, Pavel