[PATCH 3/3 v3] backlight: Add Kinetic KTD253 backlight driver

[Lee Jones]

On Wed, 19 Aug 2020, Linus Walleij wrote:

> The Kinetic KTD253 backlight driver is controlled with a
> single GPIO line, but still supports a range of brightness
> settings by sending fast pulses on the line.
> 
> This is based off the source code release for the Samsung
> GT-S7710 mobile phone.
> 
> Cc: Sam Ravnborg <sam at ravnborg.org>
> Reviewed-by: Daniel Thompson <daniel.thompson at linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
> ---
> ChangeLog v2->v3:
> - Collect Daniel's review tag.
> ChangeLog v1->v2:
> - Expose the 32 actual hardware levels of brightness directly
>   instead of using an interpolated "brightness" table.
> - Use the new backlight_get_brightness() helper.
> - Call backlight_update_status() in probe instead of calling
>   local functions to sync brightness.
> - Sort includes alphabetically.
> - Name the GPIO line "enable" and grab that in accordance
>   with the change to the DT bindings.
> ---
>  MAINTAINERS                                |   6 +
>  drivers/video/backlight/Kconfig            |   8 +
>  drivers/video/backlight/Makefile           |   1 +
>  drivers/video/backlight/ktd253-backlight.c | 198 +++++++++++++++++++++
>  4 files changed, 213 insertions(+)
>  create mode 100644 drivers/video/backlight/ktd253-backlight.c

Applied, thanks.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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