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drm/panel: st7703: Enter sleep after display off 

The datasheet suggests to issue sleep in after display off
as a part of the panel's shutdown sequence.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701162928.1638874-11-megous@megous.com
This commit is contained in:
Ondrej Jirman 2020-07-01 18:29:25 +02:00 committed by Sam Ravnborg
parent 67680f8782
commit 43fc6db016
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/panel/panel-sitronix-st7703.c
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@ -393,8 +393,19 @@ static int st7703_disable(struct drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
int ret;
return mipi_dsi_dcs_set_display_off(dsi);
ret = mipi_dsi_dcs_set_display_off(dsi);
if (ret < 0)
DRM_DEV_ERROR(ctx->dev,
"Failed to turn off the display: %d\n", ret);
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0)
DRM_DEV_ERROR(ctx->dev,
"Failed to enter sleep mode: %d\n", ret);
return 0;
}
static int st7703_unprepare(struct drm_panel *panel)