Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-20 06:53:04 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Optimize vstartup position for AS-SDP

Browse Source 
[Why]
In current design, the vstartup position is adjusted to
vblank start position when AS-SDP is enabled.
However when the vblank length is too big, it may over
vstartup boundary.

[How]
To adjust vstartup position to 1 line before vsync position.

Reviewed-by: Anthony Koo <anthony.koo@amd.com>
Signed-off-by: Robin Chen <robin.chen@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Robin Chen 2024-07-18 16:48:26 +08:00 committed by Alex Deucher
parent 3bb41f2e91
commit 027347d17a
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
View File

@ -1132,7 +1132,8 @@ static void dcn20_adjust_freesync_v_startup(
patched_crtc_timing.v_addressable -
patched_crtc_timing.v_border_top;
newVstartup = asic_blank_end + (patched_crtc_timing.v_total - asic_blank_start);
/* The newVStartUp is 1 line before vsync point */
newVstartup = asic_blank_end + 1;
*vstartup_start = ((newVstartup > *vstartup_start) ? newVstartup : *vstartup_start);
}