[2/3] drm/panel: jh057n00900: Move mipi_dsi_dcs_set_display_off to disable()

Submitted by Guido Günther on July 26, 2019, 9:21 a.m.

Details

Message ID b139adf5f47a0988b12542780963a5fbabb77389.1564132646.git.agx@sigxcpu.org
State New
Headers show
Series "drm/panel: jh057n00900: Move dsi init sequence to prepare" ( rev: 1 ) in DRI devel

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Commit Message

Guido Günther July 26, 2019, 9:21 a.m.
This makes it symmetric with the panel init happening in enable().

Signed-off-by: Guido Günther <agx@sigxcpu.org>
---
 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

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diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
index c6b4bfd79fde..cc89831e30a6 100644
--- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
@@ -158,19 +158,23 @@  static int jh057n_enable(struct drm_panel *panel)
 static int jh057n_disable(struct drm_panel *panel)
 {
 	struct jh057n *ctx = panel_to_jh057n(panel);
+	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+	int ret;
+
+	ret = backlight_disable(ctx->backlight);
+	if (ret < 0)
+		return ret;
 
-	return backlight_disable(ctx->backlight);
+	return mipi_dsi_dcs_set_display_off(dsi);
 }
 
 static int jh057n_unprepare(struct drm_panel *panel)
 {
 	struct jh057n *ctx = panel_to_jh057n(panel);
-	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
 
 	if (!ctx->prepared)
 		return 0;
 
-	mipi_dsi_dcs_set_display_off(dsi);
 	regulator_disable(ctx->iovcc);
 	regulator_disable(ctx->vcc);
 	ctx->prepared = false;

Comments

Hi Guido.

On Fri, Jul 26, 2019 at 11:21:42AM +0200, Guido Günther wrote:
> This makes it symmetric with the panel init happening in enable().
> 
> Signed-off-by: Guido Günther <agx@sigxcpu.org>
> ---
>  drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> index c6b4bfd79fde..cc89831e30a6 100644
> --- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> +++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> @@ -158,19 +158,23 @@ static int jh057n_enable(struct drm_panel *panel)
>  static int jh057n_disable(struct drm_panel *panel)
>  {
>  	struct jh057n *ctx = panel_to_jh057n(panel);
> +	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
> +	int ret;
> +
> +	ret = backlight_disable(ctx->backlight);
> +	if (ret < 0)
> +		return ret;
We most likely do not want to skip mipi_dsi_dcs_set_display_off()
just because we fail to disable backlight.
Most other panels disable backlight without a check for the return
value.

	Sam