[PATCH 28/35] drm/amd/display: Factor in immediate flip support into DLG calculations

Rodrigo Siqueira Rodrigo.Siqueira at amd.com
Thu Apr 16 23:40:37 UTC 2020


From: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>

[Why]
We expect to be able to perform immediate flipping without having to
recalculate and update all the watermarks.

There are certain usecases today (1080p @ 90deg, 2160p @ 90deg) such
that we get a urgency value of 0 for frac_urg_bw_flip because we're
explicitly passing in a value of "false" for requiring immediate
flip support into the DLG calculation.

[How]
Always pass in true into the calculation. With this we get a correct
non-zero value for frac_urg_bw_flip.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas at amd.com>
Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 219aaed6e06e..6472c3a2d270 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -3033,7 +3033,7 @@ void dcn20_calculate_dlg_params(
 				pipe_idx,
 				cstate_en,
 				context->bw_ctx.bw.dcn.clk.p_state_change_support,
-				false, false, false);
+				false, false, true);
 
 		context->bw_ctx.dml.funcs.rq_dlg_get_rq_reg(&context->bw_ctx.dml,
 				&context->res_ctx.pipe_ctx[i].rq_regs,
-- 
2.26.0



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