[PATCH 2/2] backlight: pwm: Add backlight-boot-off property

[Ajay kumar]

Hi Huang,

On Thu, Feb 26, 2015 at 9:09 AM, huang lin <hl at rock-chips.com> wrote:
> Add backlight-boot-off property, so we can keeping the
> backlight disabled at boot until it is enabled implicitly
> by a panel driver, or explicitly by userspace
>
> Signed-off-by: huang lin <hl at rock-chips.com>
>
> ---
>
>  drivers/video/backlight/pwm_bl.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
> index 3a145a6..dece351 100644
> --- a/drivers/video/backlight/pwm_bl.c
> +++ b/drivers/video/backlight/pwm_bl.c
> @@ -319,6 +319,10 @@ static int pwm_backlight_probe(struct platform_device *pdev)
>         }
>
>         bl->props.brightness = data->dft_brightness;
> +
> +       if (of_find_property(pdev->dev.of_node, "backlight-boot-off", NULL))
> +               bl->props.power = FB_BLANK_POWERDOWN;
> +

You need to check this. Originally, Thierry proposed it.
http://permalink.gmane.org/gmane.linux.drivers.devicetree/84604

>         backlight_update_status(bl);
>
>         platform_set_drvdata(pdev, bl);
> --
> 1.9.1
>
>
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