To return the orientation property to drm/kms driver.
Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
v2->v3: add comments for notice.
---
drivers/gpu/drm/panel/panel-lvds.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 27a1c9923b09..239527409b00 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -102,15 +102,29 @@ 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 drivers are expected to call drm_panel_get_orientation() to get
+ * panel's orientation then drm_connector_set_panel_orientation() to
+ * set the property before drm_dev_register(). Otherwise there will be
+ * a WARN_ON if orientation is set after drm is registered.
+ */
drm_connector_set_panel_orientation(connector, lvds->orientation);
return 1;
}
+static enum drm_panel_orientation panel_lvds_get_orientation,(struct drm_panel *panel)
+{
+ struct panel_lvds *lvds = to_panel_lvds(panel);
+
+ return lvds->orientation;
+}
+
static const struct drm_panel_funcs panel_lvds_funcs = {
.unprepare = panel_lvds_unprepare,
.prepare = panel_lvds_prepare,
.get_modes = panel_lvds_get_modes,
+ .get_orientation = panel_lvds_get_orientation,
};
static int panel_lvds_parse_dt(struct panel_lvds *lvds)
--
2.36.1.255.ge46751e96f-goog
