[PATCH RFC 1/8] drm: Add a link_train_retry field to drm_connector

[Manasi Navare]

This is a boolean that is set to true if link training fails
during modeset in the atomic commit.
This will be used to detect a change in the connector properties
and to retrigger a full modeset so that the link can be retrained
at lower link rate value.

Cc: dri-devel at lists.freedesktop.org
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Daniel Vetter <daniel.vetter at intel.com>
Cc: Ville Syrjala <ville.syrjala at linux.intel.com>

Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
---
 include/drm/drm_connector.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index ac9d7d8..d499466 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -682,6 +682,11 @@ struct drm_connector {
 	uint8_t num_h_tile, num_v_tile;
 	uint8_t tile_h_loc, tile_v_loc;
 	uint16_t tile_h_size, tile_v_size;
+
+	/* Flag to indicate if link train retry is required for DisplayPort
+	 * in case of link train failure during current modeset
+	 */
+	bool link_train_retry;
 };
 
 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
-- 
1.9.1