[RESEND PATCH v5 3/5] pwm-backlight: add support for PWM delays proprieties.

[Thierry Reding]

On Fri, Feb 16, 2018 at 06:40:32PM +0100, Enric Balletbo i Serra wrote:
> Some panels (i.e. N116BGE-L41), in their power sequence specifications,
> request a delay between set the PWM signal and enable the backlight and
> between clear the PWM signal and disable the backlight. Add support for
> the new post-pwm-on-delay-ms and pwm-off-delay-ms proprieties to meet
> the timings.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo at collabora.com>
> Acked-by: Pavel Machek <pavel at ucw.cz>
> Acked-by: Daniel Thompson <daniel.thompson at linaro.org>
> Acked-by: Jingoo Han <jingoohan1 at gmail.com>
> ---
> Changes since v4:
>  - Rebased on top of mainline.
>  - Added the acks from Pavel Machek, Daniel thompson and Jingoo Han
> Changes since v3:
>  - Use two named members instead of pwm_delay[] (Daniel and Pavel)
>  - Use msleep instead of usleep_range. (Pavel)
> Changes since v2:
>  - Move the pwm/enable sequence to another patch (Thierry Reding)
> Changes since v1:
>  - As suggested by Daniel Thompson
>    - Do not assume power-on delay and power-off delay will be the same
>  - Move the check of dt property to the parse dt function.
> 
>  drivers/video/backlight/pwm_bl.c | 19 +++++++++++++++++++
>  include/linux/pwm_backlight.h    |  2 ++
>  2 files changed, 21 insertions(+)

Acked-by: Thierry Reding <thierry.reding at gmail.com>
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