[PATCH v11 3/4] drm/panel: lvds: Read panel orientation

[Dmitry Osipenko <digetx@gmail.com>]

The panel orientation needs to parsed from a device-tree and assigned to
the panel's connector in order to make orientation property available to
userspace. That's what this patch does for the generic LVDS panel.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/gpu/drm/panel/panel-lvds.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 5ce3f4a2b7a1..f62227059090 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -37,6 +37,8 @@ struct panel_lvds {
 
 	struct gpio_desc *enable_gpio;
 	struct gpio_desc *reset_gpio;
+
+	enum drm_panel_orientation orientation;
 };
 
 static inline struct panel_lvds *to_panel_lvds(struct drm_panel *panel)
@@ -99,6 +101,7 @@ static int panel_lvds_get_modes(struct drm_panel *panel,
 	connector->display_info.bus_flags = lvds->data_mirror
 					  ? DRM_BUS_FLAG_DATA_LSB_TO_MSB
 					  : DRM_BUS_FLAG_DATA_MSB_TO_LSB;
+	drm_connector_set_panel_orientation(connector, lvds->orientation);
 
 	return 1;
 }
@@ -116,6 +119,13 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds)
 	const char *mapping;
 	int ret;
 
+	ret = of_drm_get_panel_orientation(np, &lvds->orientation);
+	if (ret < 0) {
+		dev_err(lvds->dev, "%pOF: problems parsing rotation (%d)\n",
+			np, ret);
+		return ret;
+	}
+
 	ret = of_get_display_timing(np, "panel-timing", &timing);
 	if (ret < 0) {
 		dev_err(lvds->dev, "%pOF: problems parsing panel-timing (%d)\n",
-- 
2.26.0

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