leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm: add PSR2 support and capability definition as per eDP 1.5

Browse Source 
[why & how]
As per eDP 1.5 spec, add the below two DPCD bit fields for PSR-SU
support and capability:

1. DP_PSR2_WITH_Y_COORD_ET_SUPPORTED
2. DP_PSR2_SU_AUX_FRAME_SYNC_NOT_NEEDED

changes in v2
------------------
* fixed the typo
* explicitly list what DPCD bit fields are added

Signed-off-by: David Zhang <dingchen.zhang@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
David Zhang 2022-03-31 11:55:49 -04:00 committed by Alex Deucher
parent c2e4b0a97c
commit 72907bff3b
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/drm/dp/drm_dp_helper.h
View File

@ -361,6 +361,7 @@ struct drm_panel;
# 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_Y_COORD_ET_SUPPORTED 4 /* eDP 1.5, adopted eDP 1.4b SCR */
#define DP_PSR_CAPS 0x071 /* XXX 1.2? */
# define DP_PSR_NO_TRAIN_ON_EXIT 1
@ -375,6 +376,7 @@ struct drm_panel;
# define DP_PSR_SETUP_TIME_SHIFT 1
# define DP_PSR2_SU_Y_COORDINATE_REQUIRED (1 << 4) /* eDP 1.4a */
# define DP_PSR2_SU_GRANULARITY_REQUIRED (1 << 5) /* eDP 1.4b */
# define DP_PSR2_SU_AUX_FRAME_SYNC_NOT_NEEDED (1 << 6)/* eDP 1.5, adopted eDP 1.4b SCR */
#define DP_PSR2_SU_X_GRANULARITY 0x072 /* eDP 1.4b */
#define DP_PSR2_SU_Y_GRANULARITY 0x074 /* eDP 1.4b */