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

drm/amd/display: Do not disable pipe split if mode is not supported

Browse Source 
[WHY]
If mode is not supported, pipe split should not be disabled.
This may cause more modes to fail.

[HOW]
Check for mode support before disabling pipe split.

This commit was previously reverted as it was thought to
have problems, but those issues have been resolved.

Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Lee 2020-04-22 18:07:48 -04:00 committed by Alex Deucher
parent 1349f6fc33
commit 1dfedb39d3
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
View File

@ -2623,19 +2623,24 @@ int dcn20_validate_apply_pipe_split_flags(
/* Avoid split loop looks for lowest voltage level that allows most unsplit pipes possible */
if (avoid_split) {
int max_mpc_comb = context->bw_ctx.dml.vba.maxMpcComb;
for (i = 0, pipe_idx = 0; i < dc->res_pool->pipe_count; i++) {
if (!context->res_ctx.pipe_ctx[i].stream)
continue;
for (vlevel_split = vlevel; vlevel <= context->bw_ctx.dml.soc.num_states; vlevel++)
if (context->bw_ctx.dml.vba.NoOfDPP[vlevel][0][pipe_idx] == 1)
if (context->bw_ctx.dml.vba.NoOfDPP[vlevel][0][pipe_idx] == 1 &&
context->bw_ctx.dml.vba.ModeSupport[vlevel][0])
break;
/* Impossible to not split this pipe */
if (vlevel > context->bw_ctx.dml.soc.num_states)
vlevel = vlevel_split;
else
max_mpc_comb = 0;
pipe_idx++;
}
context->bw_ctx.dml.vba.maxMpcComb = 0;
context->bw_ctx.dml.vba.maxMpcComb = max_mpc_comb;
}
/* Split loop sets which pipe should be split based on dml outputs and dc flags */