Hi Philippe,
Reviewed-by: Vincent Abriou <vincent.abriou@xxxxxx>
BR
Vincent
On 04/23/2018 04:10 PM, Philippe Cornu wrote:
> The backlight 1st update was in the otm8009a_prepare() function
> for a bad reason: backlight was not working in video mode and the
> otm8009a_prepare() is in command mode for the init sequence. As the
> backlight is now fixed (no lpm), it is good to put it back in the
> otm8009a_enable() function, avoiding also image glitches visible
> on some "slow" devices.
>
> Signed-off-by: Philippe Cornu <philippe.cornu@xxxxxx>
> ---
> drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 17 ++++++++++-------
> 1 file changed, 10 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
> index 0fd2e0144d2b..de4a16d5275c 100644
> --- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
> +++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
> @@ -330,13 +330,6 @@ static int otm8009a_prepare(struct drm_panel *panel)
>
> ctx->prepared = true;
>
> - /*
> - * Power on the backlight. Note: end-user still controls brightness
> - * Note: ctx->prepared must be true before updating the backlight.
> - */
> - ctx->bl_dev->props.power = FB_BLANK_UNBLANK;
> - backlight_update_status(ctx->bl_dev);
> -
> return 0;
> }
>
> @@ -344,6 +337,16 @@ static int otm8009a_enable(struct drm_panel *panel)
> {
> struct otm8009a *ctx = panel_to_otm8009a(panel);
>
> + if (ctx->enabled)
> + return 0;
> +
> + /*
> + * Power on the backlight. Note: end-user still controls brightness
> + * Note: ctx->prepared must be true before updating the backlight.
> + */
> + ctx->bl_dev->props.power = FB_BLANK_UNBLANK;
> + backlight_update_status(ctx->bl_dev);
> +
> ctx->enabled = true;
>
> return 0;
>
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