drm/radeon/kms: fix handling of DP to LVDS bridges

They need to be treated like eDP rather than DP.

May fix:
https://bugzilla.kernel.org/show_bug.cgi?id=34822

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 613e36f83b71..cbfca3a24fdf 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1075,7 +1075,8 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
         struct drm_encoder *encoder = radeon_best_single_encoder(connector);
         int ret;
 
-        if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+        if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
+            (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {
                 struct drm_display_mode *mode;
 
                 if (!radeon_dig_connector->edp_on)
@@ -1208,7 +1209,8 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
                 radeon_connector->edid = NULL;
         }
 
-        if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+        if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
+            (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {
                 if (encoder) {
                         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
                         struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
@@ -1271,7 +1273,8 @@ static int radeon_dp_mode_valid(struct drm_connector *connector,
 
         /* XXX check mode bandwidth */
 
-        if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+        if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
+            (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {
                 struct drm_encoder *encoder = radeon_best_single_encoder(connector);
 
                 if ((mode->hdisplay < 320) || (mode->vdisplay < 240))
@@ -1281,7 +1284,7 @@ static int radeon_dp_mode_valid(struct drm_connector *connector,
                         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
                         struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
 
-                /* AVIVO hardware supports downscaling modes larger than the panel
+                        /* AVIVO hardware supports downscaling modes larger than the panel
                          * to the panel size, but I'm not sure this is desirable.
                          */
                         if ((mode->hdisplay > native_mode->hdisplay) ||