From 75c35000235f3662f2810e9a59b0c8eed045432e Mon Sep 17 00:00:00 2001 From: Nikola Cornij Date: Wed, 19 Jun 2019 14:30:52 -0400 Subject: [PATCH] drm/amd/display: Power-gate all DSCs at driver init time [why] DSC should be powered-on only on as-needed basis, i.e. if the mode requires it [how] Loop over all the DSCs at driver init time and power-gate each Signed-off-by: Nikola Cornij Reviewed-by: Nevenko Stupar Acked-by: Leo Li Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index ddf15a3715e0..5ecf965bc3f5 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -624,6 +624,10 @@ static void dcn20_init_hw(struct dc *dc) } } + /* Power gate DSCs */ + for (i = 0; i < res_pool->res_cap->num_dsc; i++) + dcn20_dsc_pg_control(hws, res_pool->dscs[i]->inst, false); + /* Blank pixel data with OPP DPG */ for (i = 0; i < dc->res_pool->timing_generator_count; i++) { struct timing_generator *tg = dc->res_pool->timing_generators[i]; -- 2.11.0