From: Alvin Lee <[email protected]> [Description] - To reduce vlevel further, we can try to apply subvp on configs that already support p-state since the natural p-state support may not allow for DPM0. - Add code to try subvp to reduce UCLK DPM level further if already supported, but don't use subvp if it does not optimize the DPM level even lower
Reviewed-by: Samson Tam <[email protected]> Acked-by: Hamza Mahfooz <[email protected]> Signed-off-by: Alvin Lee <[email protected]> --- drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) 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 c4ffb4b92b56..26411d4e9730 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 @@ -1416,6 +1416,7 @@ static void dcn32_full_validate_bw_helper(struct dc *dc, unsigned int dc_pipe_idx = 0; int i = 0; bool found_supported_config = false; + int vlevel_temp = 0; dc_assert_fp_enabled(); @@ -1448,13 +1449,15 @@ static void dcn32_full_validate_bw_helper(struct dc *dc, */ if (!dc->debug.force_disable_subvp && !dc->caps.dmub_caps.gecc_enable && dcn32_all_pipes_have_stream_and_plane(dc, context) && !dcn32_mpo_in_use(context) && !dcn32_any_surfaces_rotated(dc, context) && !is_test_pattern_enabled(context) && - (*vlevel == context->bw_ctx.dml.soc.num_states || + (*vlevel == context->bw_ctx.dml.soc.num_states || (vba->DRAMSpeedPerState[*vlevel] != vba->DRAMSpeedPerState[0] && + vba->DRAMClockChangeSupport[*vlevel][vba->maxMpcComb] != dm_dram_clock_change_unsupported) || vba->DRAMClockChangeSupport[*vlevel][vba->maxMpcComb] == dm_dram_clock_change_unsupported || dc->debug.force_subvp_mclk_switch)) { dcn32_merge_pipes_for_subvp(dc, context); memset(merge, 0, MAX_PIPES * sizeof(bool)); + vlevel_temp = *vlevel; /* to re-initialize viewport after the pipe merge */ for (i = 0; i < dc->res_pool->pipe_count; i++) { struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; @@ -1523,6 +1526,9 @@ static void dcn32_full_validate_bw_helper(struct dc *dc, } } + if (vba->DRAMSpeedPerState[*vlevel] >= vba->DRAMSpeedPerState[vlevel_temp]) + found_supported_config = false; + // If SubVP pipe config is unsupported (or cannot be used for UCLK switching) // remove phantom pipes and repopulate dml pipes if (!found_supported_config) { -- 2.42.0
