diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index 135e2b58cc73..c50427bfab77 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1362,6 +1362,43 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context) tg->funcs->tg_init(tg); } + + /* Power gate DSCs */ + if (hws->funcs.dsc_pg_control != NULL) { + uint32_t num_opps = 0; + uint32_t opp_id_src0 = OPP_ID_INVALID; + uint32_t opp_id_src1 = OPP_ID_INVALID; + + // Step 1: To find out which OPTC is running & OPTC DSC is ON + for (i = 0; i < dc->res_pool->res_cap->num_timing_generator; i++) { + uint32_t optc_dsc_state = 0; + struct timing_generator *tg = dc->res_pool->timing_generators[i]; + + if (tg->funcs->is_tg_enabled(tg)) { + if (tg->funcs->get_dsc_status) + tg->funcs->get_dsc_status(tg, &optc_dsc_state); + // Only one OPTC with DSC is ON, so if we got one result, we would exit this block. + // non-zero value is DSC enabled + if (optc_dsc_state != 0) { + tg->funcs->get_optc_source(tg, &num_opps, &opp_id_src0, &opp_id_src1); + break; + } + } + } + + // Step 2: To power down DSC but skip DSC of running OPTC + for (i = 0; i < dc->res_pool->res_cap->num_dsc; i++) { + struct dcn_dsc_state s = {0}; + + dc->res_pool->dscs[i]->funcs->dsc_read_state(dc->res_pool->dscs[i], &s); + + if ((s.dsc_opp_source == opp_id_src0 || s.dsc_opp_source == opp_id_src1) && + s.dsc_clock_en && s.dsc_fw_en) + continue; + + hws->funcs.dsc_pg_control(hws, dc->res_pool->dscs[i]->inst, false); + } + } } void dcn10_init_hw(struct dc *dc) |