[PATCH] amd/display: enable panel orientation quirks

[Simon Ser]

This patch allows panel orientation quirks from DRM core to be
used. They attach a DRM connector property "panel orientation"
which indicates in which direction the panel has been mounted.
Some machines have the internal screen mounted with a rotation.

Since the panel orientation quirks need the native mode from the
EDID, check for it in amdgpu_dm_connector_ddc_get_modes.

Signed-off-by: Simon Ser <cont...@emersion.fr>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: Harry Wentland <hwent...@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 53363728dbbd..a420602f1794 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7680,6 +7680,32 @@ static void amdgpu_dm_connector_add_common_modes(struct 
drm_encoder *encoder,
        }
 }
 
+static void amdgpu_set_panel_orientation(struct drm_connector *connector)
+{
+       struct drm_encoder *encoder;
+       struct amdgpu_encoder *amdgpu_encoder;
+       const struct drm_display_mode *native_mode;
+
+       if (connector->connector_type != DRM_MODE_CONNECTOR_eDP &&
+           connector->connector_type != DRM_MODE_CONNECTOR_LVDS)
+               return;
+
+       encoder = amdgpu_dm_connector_to_encoder(connector);
+       if (!encoder)
+               return;
+
+       amdgpu_encoder = to_amdgpu_encoder(encoder);
+
+       native_mode = &amdgpu_encoder->native_mode;
+       if (native_mode->hdisplay == 0 || native_mode->vdisplay == 0)
+               return;
+
+       drm_connector_set_panel_orientation_with_quirk(connector,
+                                                      
DRM_MODE_PANEL_ORIENTATION_UNKNOWN,
+                                                      native_mode->hdisplay,
+                                                      native_mode->vdisplay);
+}
+
 static void amdgpu_dm_connector_ddc_get_modes(struct drm_connector *connector,
                                              struct edid *edid)
 {
@@ -7708,6 +7734,8 @@ static void amdgpu_dm_connector_ddc_get_modes(struct 
drm_connector *connector,
                 * restored here.
                 */
                amdgpu_dm_update_freesync_caps(connector, edid);
+
+               amdgpu_set_panel_orientation(connector);
        } else {
                amdgpu_dm_connector->num_modes = 0;
        }
-- 
2.33.0