From 43fc6db016a01793a89904ec71793337961ae5b0 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Wed, 1 Jul 2020 18:29:25 +0200 Subject: [PATCH] drm/panel: st7703: Enter sleep after display off MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The datasheet suggests to issue sleep in after display off as a part of the panel's shutdown sequence. Signed-off-by: Ondrej Jirman Reviewed-by: Linus Walleij Tested-by: Guido Günther Reviewed-by: Guido Günther Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20200701162928.1638874-11-megous@megous.com --- drivers/gpu/drm/panel/panel-sitronix-st7703.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c index dadb482b244d4..7750179bca607 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c @@ -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; + + 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); - return mipi_dsi_dcs_set_display_off(dsi); + 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) -- 2.30.2