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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megous@megous.com>
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Date: Fri, 26 Jun 2020 02:55:58 +0200
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Subject: [PATCH] drm/panel: st7703: Enter sleep after display off
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The datasheet suggests to issue sleep in after display off
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as a part of the panel's shutdown sequence.
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Signed-off-by: Ondrej Jirman <megous@megous.com>
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---
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drivers/gpu/drm/panel/panel-sitronix-st7703.c | 13 ++++++++++++-
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1 file changed, 12 insertions(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
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index 33611419059a..e771281eb547 100644
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--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
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+++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
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@@ -394,8 +394,19 @@ static int st7703_disable(struct drm_panel *panel)
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{
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struct st7703 *ctx = panel_to_st7703(panel);
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struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
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+ int ret;
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+
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+ ret = mipi_dsi_dcs_set_display_off(dsi);
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+ if (ret < 0)
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+ DRM_DEV_ERROR(ctx->dev,
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+ "Failed to turn off the display: %d\n", ret);
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- return mipi_dsi_dcs_set_display_off(dsi);
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+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
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+ if (ret < 0)
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+ DRM_DEV_ERROR(ctx->dev,
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+ "Failed to enter sleep mode: %d\n", ret);
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+
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+ return 0;
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}
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static int st7703_unprepare(struct drm_panel *panel)
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--
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2.26.2
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