To return the orientation property to drm/kms driver.

Signed-off-by: Hsin-Yi Wang <hsi...@chromium.org>
Reviewed-by: Hans de Goede <hdego...@redhat.com>
Reviewed-by: Douglas Anderson <diand...@chromium.org>
---
 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c 
b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index 1be150ac758f..a9cd07234179 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -1511,16 +1511,30 @@ static int boe_panel_get_modes(struct drm_panel *panel,
        connector->display_info.width_mm = boe->desc->size.width_mm;
        connector->display_info.height_mm = boe->desc->size.height_mm;
        connector->display_info.bpc = boe->desc->bpc;
+       /*
+        * 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, boe->orientation);
 
        return 1;
 }
 
+static enum drm_panel_orientation boe_panel_get_orientation(struct drm_panel 
*panel)
+{
+       struct boe_panel *boe = to_boe_panel(panel);
+
+       return boe->orientation;
+}
+
 static const struct drm_panel_funcs boe_panel_funcs = {
        .unprepare = boe_panel_unprepare,
        .prepare = boe_panel_prepare,
        .enable = boe_panel_enable,
        .get_modes = boe_panel_get_modes,
+       .get_orientation = boe_panel_get_orientation,
 };
 
 static int boe_panel_add(struct boe_panel *boe)
-- 
2.36.1.255.ge46751e96f-goog

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