[PATCH v5 05/29] drm/panel: panel-dsi-cm: set column & page at setup

[Tomi Valkeinen]

Set the column & page address once during setup, instead of relying the
DSI host driver to set those.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
Reviewed-by: Sam Ravnborg <sam at ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 drivers/gpu/drm/panel/panel-dsi-cm.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-dsi-cm.c b/drivers/gpu/drm/panel/panel-dsi-cm.c
index 38f79dca1fd0..556f9a2c5c0c 100644
--- a/drivers/gpu/drm/panel/panel-dsi-cm.c
+++ b/drivers/gpu/drm/panel/panel-dsi-cm.c
@@ -170,6 +170,22 @@ static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3)
 	return 0;
 }
 
+static int dsicm_set_update_window(struct panel_drv_data *ddata)
+{
+	struct mipi_dsi_device *dsi = ddata->dsi;
+	int r;
+
+	r = mipi_dsi_dcs_set_column_address(dsi, 0, ddata->mode.hdisplay - 1);
+	if (r < 0)
+		return r;
+
+	r = mipi_dsi_dcs_set_page_address(dsi, 0, ddata->mode.vdisplay - 1);
+	if (r < 0)
+		return r;
+
+	return 0;
+}
+
 static int dsicm_bl_update_status(struct backlight_device *dev)
 {
 	struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);
@@ -307,6 +323,10 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
 	if (r)
 		goto err;
 
+	r = dsicm_set_update_window(ddata);
+	if (r)
+		goto err;
+
 	r = mipi_dsi_dcs_set_display_on(ddata->dsi);
 	if (r)
 		goto err;
-- 
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