From: Wenjing Liu wenjing.liu@amd.com

[why] When Subvp pipe's index is smaller than main pipe's index, the main pipe's ODM policy is not yet assigned. If we assign subvp pipe's ODM policy based on main pipe, we will assign uninitialized ODM policy.

[how] Instead of copying main pipe's policy we copy the main pipe ODM policy logic. So it doesn't matter whether if main pipe's ODM policy is set, phantom pipe will always have the same policy because it running the same calcualtion to derive ODM policy.

Cc: stable@vger.kernel.org Reviewed-by: Alvin Lee alvin.lee2@amd.com Acked-by: Hamza Mahfooz hamza.mahfooz@amd.com Signed-off-by: Wenjing Liu wenjing.liu@amd.com --- .../dc/resource/dcn32/dcn32_resource.c | 28 ++++++++++--------- 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c index e2bff9b9d55a..9aa39bd25be9 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c @@ -1824,6 +1824,7 @@ int dcn32_populate_dml_pipes_from_context( int num_subvp_main = 0; int num_subvp_phantom = 0; int num_subvp_none = 0; + int odm_slice_count;

dcn20_populate_dml_pipes_from_context(dc, context, pipes, fast_validate);

@@ -1852,7 +1853,7 @@ int dcn32_populate_dml_pipes_from_context( mall_type = dc_state_get_pipe_subvp_type(context, pipe); if (mall_type == SUBVP_MAIN) { if (resource_is_pipe_type(pipe, OTG_MASTER)) - subvp_main_pipe_index = pipe_cnt; + subvp_main_pipe_index = i; } pipe_cnt++; } @@ -1878,22 +1879,23 @@ int dcn32_populate_dml_pipes_from_context( mall_type = dc_state_get_pipe_subvp_type(context, pipe); if (single_display_subvp && (mall_type == SUBVP_PHANTOM)) { if (subvp_main_pipe_index < 0) { + odm_slice_count = -1; ASSERT(0); } else { - pipes[pipe_cnt].pipe.dest.odm_combine_policy = - pipes[subvp_main_pipe_index].pipe.dest.odm_combine_policy; + odm_slice_count = resource_get_odm_slice_count(&res_ctx->pipe_ctx[subvp_main_pipe_index]); } } else { - switch (resource_get_odm_slice_count(pipe)) { - case 2: - pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_2to1; - break; - case 4: - pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_4to1; - break; - default: - pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_dal; - } + odm_slice_count = resource_get_odm_slice_count(pipe); + } + switch (odm_slice_count) { + case 2: + pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_2to1; + break; + case 4: + pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_4to1; + break; + default: + pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_dal; } } else { pipes[pipe_cnt].pipe.dest.odm_combine_policy = dm_odm_combine_policy_dal;