Ping. Any chance of getting this into 3.4?
On Thu, Apr 19, 2012 at 10:55:35AM -0500, Seth Forshee wrote:
> After S3, the brightness might not be restored to the pre-suspend value.
> Request status update calls from the backlight core on suspend/resume to
> ensure the brightness value is restored.
>
> Reported-and-tested-by: Austin Lund <austin.lund@xxxxxxxxx>
> Signed-off-by: Seth Forshee <seth.forshee@xxxxxxxxxxxxx>
> ---
> drivers/platform/x86/apple-gmux.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
> index 8a582bd..6dcef4f 100644
> --- a/drivers/platform/x86/apple-gmux.c
> +++ b/drivers/platform/x86/apple-gmux.c
> @@ -87,6 +87,9 @@ static int gmux_update_status(struct backlight_device *bd)
> struct apple_gmux_data *gmux_data = bl_get_data(bd);
> u32 brightness = bd->props.brightness;
>
> + if (bd->props.state & BL_CORE_SUSPENDED)
> + brightness = 0;
> +
> /*
> * Older gmux versions require writing out lower bytes first then
> * setting the upper byte to 0 to flush the values. Newer versions
> @@ -102,6 +105,7 @@ static int gmux_update_status(struct backlight_device *bd)
> }
>
> static const struct backlight_ops gmux_bl_ops = {
> + .options = BL_CORE_SUSPENDRESUME,
> .get_brightness = gmux_get_brightness,
> .update_status = gmux_update_status,
> };
> --
> 1.7.9.5
>
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