drm/radeon/kms: add quirk for acer 5102

doesn't have a tv-out port
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon_combios.c

@@ -1579,6 +1579,17 @@ static bool radeon_apply_legacy_quirks(struct drm_device *dev,
 	return true;
 }
 
+static bool radeon_apply_legacy_tv_quirks(struct drm_device *dev)
+{
+	/* Acer 5102 has non-existent TV port */
+	if (dev->pdev->device == 0x5975 &&
+	    dev->pdev->subsystem_vendor == 0x1025 &&
+	    dev->pdev->subsystem_device == 0x009f)
+		return false;
+
+	return true;
+}
+
 bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
 {
 	struct radeon_device *rdev = dev->dev_private;
@@ -1896,6 +1907,7 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
 		    combios_get_table_offset(dev, COMBIOS_TV_INFO_TABLE);
 		if (tv_info) {
 			if (RBIOS8(tv_info + 6) == 'T') {
+				if (radeon_apply_legacy_tv_quirks(dev)) {
 					radeon_add_legacy_encoder(dev,
 								  radeon_get_encoder_id
 								  (dev,
@@ -1909,6 +1921,7 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
 				}
 			}
 		}
+	}
 
 	radeon_link_encoder_connector(dev);