[PATCH] drm/udl: Cut >165 MHz modes for DVI

[Robert Tarasov]

Filter out all modes with clock higher than 165 MHz for DVI connector in
drm/udl driver.

Signed-off-by: Robert Tarasov <tutankhamen at chromium.org>
---
 drivers/gpu/drm/udl/udl_connector.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c
index 68b221b9a01f..3b9be500b9ae 100644
--- a/drivers/gpu/drm/udl/udl_connector.c
+++ b/drivers/gpu/drm/udl/udl_connector.c
@@ -109,6 +109,14 @@ static int udl_mode_valid(struct drm_connector *connector,
 			  struct drm_display_mode *mode)
 {
 	struct udl_device *udl = connector->dev->dev_private;
+	int con_type = connector->connector_type;
+
+	if ((con_type == DRM_MODE_CONNECTOR_DVII ||
+	     con_type == DRM_MODE_CONNECTOR_DVID ||
+	     con_type == DRM_MODE_CONNECTOR_DVIA) &&
+	    mode->clock > 165000)
+		return MODE_CLOCK_HIGH;
+
 	if (!udl->sku_pixel_limit)
 		return 0;
 
-- 
2.21.0.360.g471c308f928-goog