[PATCH] drm: Add PSR version 4 macro

[sunpeng.li at amd.com]

From: Leo Li <sunpeng.li at amd.com>

eDP 1.5 specification defines PSR version 4.

It defines PSR1 and PSR2 support with selective-update (SU)
capabilities, with additional support for Y-coordinate and Early
Transport of the selective-update region.

This differs from PSR version 3 in that early transport is supported
for version 4, but not for version 3.

Signed-off-by: Leo Li <sunpeng.li at amd.com>
---
 include/drm/drm_dp_helper.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 3f2715eb965f..05268c51acaa 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -360,6 +360,7 @@ struct drm_dp_aux;
 # define DP_PSR_IS_SUPPORTED                1
 # define DP_PSR2_IS_SUPPORTED		    2	    /* eDP 1.4 */
 # define DP_PSR2_WITH_Y_COORD_IS_SUPPORTED  3	    /* eDP 1.4a */
+# define DP_PSR2_WITH_ET_IS_SUPPORTED       4	    /* eDP 1.5 (eDP 1.4b SCR) */
 
 #define DP_PSR_CAPS                         0x071   /* XXX 1.2? */
 # define DP_PSR_NO_TRAIN_ON_EXIT            1
-- 
2.34.1