Merge branch 'drm-fixes-3.18' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

one fix for PX laptops.

* 'drm-fixes-3.18' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: report disconnected for LVDS/eDP with PX if ddc fails

1 files changed, 18 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 300c4b3d4669..26baa9c05f6c 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -322,6 +322,12 @@ static void radeon_connector_get_edid(struct drm_connector *connector)
         }
 
         if (!radeon_connector->edid) {
+                /* don't fetch the edid from the vbios if ddc fails and runpm is
+                 * enabled so we report disconnected.
+                 */
+                if ((rdev->flags & RADEON_IS_PX) && (radeon_runtime_pm != 0))
+                        return;
+
                 if (rdev->is_atom_bios) {
                         /* some laptops provide a hardcoded edid in rom for LCDs */
                         if (((connector->connector_type == DRM_MODE_CONNECTOR_LVDS) ||
@@ -826,6 +832,8 @@ static int radeon_lvds_mode_valid(struct drm_connector *connector,
 static enum drm_connector_status
 radeon_lvds_detect(struct drm_connector *connector, bool force)
 {
+        struct drm_device *dev = connector->dev;
+        struct radeon_device *rdev = dev->dev_private;
         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
         struct drm_encoder *encoder = radeon_best_single_encoder(connector);
         enum drm_connector_status ret = connector_status_disconnected;
@@ -842,7 +850,11 @@ radeon_lvds_detect(struct drm_connector *connector, bool force)
                 /* check if panel is valid */
                 if (native_mode->hdisplay >= 320 && native_mode->vdisplay >= 240)
                         ret = connector_status_connected;
-
+                /* don't fetch the edid from the vbios if ddc fails and runpm is
+                 * enabled so we report disconnected.
+                 */
+                if ((rdev->flags & RADEON_IS_PX) && (radeon_runtime_pm != 0))
+                        ret = connector_status_disconnected;
         }
 
         /* check for edid as well */
@@ -1589,6 +1601,11 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
                         /* check if panel is valid */
                         if (native_mode->hdisplay >= 320 && native_mode->vdisplay >= 240)
                                 ret = connector_status_connected;
+                        /* don't fetch the edid from the vbios if ddc fails and runpm is
+                         * enabled so we report disconnected.
+                         */
+                        if ((rdev->flags & RADEON_IS_PX) && (radeon_runtime_pm != 0))
+                                ret = connector_status_disconnected;
                 }
                 /* eDP is always DP */
                 radeon_dig_connector->dp_sink_type = CONNECTOR_OBJECT_ID_DISPLAYPORT;