Hi, On 6/1/22 10:18, Hsin-Yi Wang wrote: > Panels usually call drm_connector_set_panel_orientation(), which is > later than drm/kms driver calling drm_dev_register(). This leads to a > WARN()[1]. > > The orientation property is known earlier. For example, some panels > parse the property through device tree during probe. > > The series add a panel API drm_panel_get_orientation() for drm/kms > drivers. The drivers can use the API to get panel's orientation, so they > can call drm_connector_set_panel_orientation() before drm_dev_register(). > > Panel needs to implement .get_orientation callback to return the property. > > [1] https://patchwork.kernel.org/project/linux-mediatek/patch/20220530081910.3947168-2-hsinyi@xxxxxxxxxxxx/ Thank you for implementing this. Patches 1-7 look good to me: Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx> I've a few small remarks on patch 8, see my reply to that patch. Regards, Hans > > Hsin-Yi Wang (8): > drm/panel: Add an API drm_panel_get_orientation() to return panel > orientation > drm/panel: boe-tv101wum-nl6: Implement .get_orientation callback > drm/panel: panel-edp: Implement .get_orientation callback > drm/panel: lvds: Implement .get_orientation callback > drm/panel: panel-simple: Implement .get_orientation callback > drm/panel: ili9881c: Implement .get_orientation callback > drm/panel: elida-kd35t133: Implement .get_orientation callback > drm/mediatek: Config orientation property if panel provides it > > drivers/gpu/drm/drm_panel.c | 8 ++++++++ > drivers/gpu/drm/mediatek/mtk_dsi.c | 14 ++++++++++++++ > drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 8 ++++++++ > drivers/gpu/drm/panel/panel-edp.c | 8 ++++++++ > drivers/gpu/drm/panel/panel-elida-kd35t133.c | 8 ++++++++ > drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 8 ++++++++ > drivers/gpu/drm/panel/panel-lvds.c | 8 ++++++++ > drivers/gpu/drm/panel/panel-simple.c | 9 +++++++++ > include/drm/drm_panel.h | 10 ++++++++++ > 9 files changed, 81 insertions(+) >
