From: Samson Tam <samson.tam@amd.com>
Date: Fri, 5 Aug 2022 22:41:01 +0000 (-0400)
Subject: drm/amd/display: fix odm 2:1 policy not being applied consistently in 4k144 modes
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f577c7c76bf9f0e0a6dd3daf5b9a3d3f2b3880cc;p=linux.git

drm/amd/display: fix odm 2:1 policy not being applied consistently in 4k144 modes

[Why]
odm 2:1 policy is splitting the pipes in 4k144.
then in subvp code, we merge the pipes. but since the
 configuration is unsupported, we keep the pipes split

[How]
for unsupported subvp configuration, redo the dml and
 pipe split calls

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Samson Tam <samson.tam@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 8118cfc5b405..edefb3fc1c3c 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -1082,6 +1082,11 @@ static void dcn32_full_validate_bw_helper(struct dc *dc,
 			dc->res_pool->funcs->remove_phantom_pipes(dc, context);
 			vba->DRAMClockChangeSupport[*vlevel][vba->maxMpcComb] = dm_dram_clock_change_unsupported;
 			*pipe_cnt = dc->res_pool->funcs->populate_dml_pipes(dc, context, pipes, false);
+
+			*vlevel = dml_get_voltage_level(&context->bw_ctx.dml, pipes, *pipe_cnt);
+			/* This may adjust vlevel and maxMpcComb */
+			if (*vlevel < context->bw_ctx.dml.soc.num_states)
+				*vlevel = dcn20_validate_apply_pipe_split_flags(dc, context, *vlevel, split, merge);
 		} else {
 			// only call dcn20_validate_apply_pipe_split_flags if we found a supported config
 			memset(split, 0, MAX_PIPES * sizeof(int));