drm/radeon/kms: parse the extended LCD info block
This block may contain various additional LCD info such
as physical size and a stored EDID.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 7b17e63..acebbc7 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -679,9 +679,17 @@
if (!radeon_connector->edid) {
radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
}
- /* some servers provide a hardcoded edid in rom for KVMs */
- if (!radeon_connector->edid)
- radeon_connector->edid = radeon_combios_get_hardcoded_edid(rdev);
+
+ if (!radeon_connector->edid) {
+ if (rdev->is_atom_bios) {
+ /* some laptops provide a hardcoded edid in rom for LCDs */
+ if (((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_LVDS) ||
+ (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)))
+ radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
+ } else
+ /* some servers provide a hardcoded edid in rom for KVMs */
+ radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev);
+ }
if (radeon_connector->edid) {
drm_mode_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid);
ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid);