diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c index bd309dbdf7b2..3cb4e9907411 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c @@ -841,6 +841,7 @@ void dcn35_init_pipes(struct dc *dc, struct dc_state *context) uint32_t num_opps = 0; uint32_t opp_id_src0 = OPP_ID_INVALID; uint32_t opp_id_src1 = OPP_ID_INVALID; + uint32_t optc_dsc_state = 0; // Step 1: To find out which OPTC is running & OPTC DSC is ON // We can't use res_pool->res_cap->num_timing_generator to check @@ -849,7 +850,6 @@ void dcn35_init_pipes(struct dc *dc, struct dc_state *context) // Some ASICs would be fused display pipes less than the default setting. // In dcnxx_resource_construct function, driver would obatin real information. for (i = 0; i < dc->res_pool->timing_generator_count; i++) { - uint32_t optc_dsc_state = 0; struct timing_generator *tg = dc->res_pool->timing_generators[i]; if (tg->funcs->is_tg_enabled(tg)) { @@ -864,15 +864,18 @@ void dcn35_init_pipes(struct dc *dc, struct dc_state *context) } } - // Step 2: To power down DSC but skip DSC of running OPTC + // 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); + /* avoid reading DSC state when it is not in use as it may be power gated */ + if (optc_dsc_state) { + 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; + if ((s.dsc_opp_source == opp_id_src0 || s.dsc_opp_source == opp_id_src1) && + s.dsc_clock_en && s.dsc_fw_en) + continue; + } pg_cntl->funcs->dsc_pg_control(pg_cntl, dc->res_pool->dscs[i]->inst, false); } |