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drm/amd/display: Fix max vstartup calculation for modes with borders

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[Why]
Vertical and horizontal borders in timings are treated as increasing the
active area - vblank and hblank actually shrink.

Our input into DML does not include these borders so it incorrectly
assumes it has more time than available for vstartup and tmdl
calculations for some modes with borders.

An example of such a timing would be 640x480@72Hz:

h_total: 832
h_border_left: 8
h_addressable: 640
h_border_right: 8
h_front_porch: 16
h_sync_width: 40
v_total: 520
v_border_top: 8
v_addressable: 480
v_border_bottom: 8
v_front_porch: 1
v_sync_width: 3
pix_clk_100hz: 315000

[How]
Include borders as part of destination vactive/hactive.

This change DCN20+ so it has wide impact, but the destination vactive
and hactive are only really used for vstartup calculation anyway.

Most modes do not have vertical or horizontal borders.

Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas 2021-07-07 13:19:14 -04:00 committed by Alex Deucher
parent 328fe6e27c
commit 2e63f4064e
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
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@ -2093,8 +2093,10 @@ int dcn20_populate_dml_pipes_from_context(
- timing->v_border_bottom;
pipes[pipe_cnt].pipe.dest.htotal = timing->h_total;
pipes[pipe_cnt].pipe.dest.vtotal = v_total;
pipes[pipe_cnt].pipe.dest.hactive = timing->h_addressable;
pipes[pipe_cnt].pipe.dest.vactive = timing->v_addressable;
pipes[pipe_cnt].pipe.dest.hactive =
timing->h_addressable + timing->h_border_left + timing->h_border_right;
pipes[pipe_cnt].pipe.dest.vactive =
timing->v_addressable + timing->v_border_top + timing->v_border_bottom;
pipes[pipe_cnt].pipe.dest.interlaced = timing->flags.INTERLACE;
pipes[pipe_cnt].pipe.dest.pixel_rate_mhz = timing->pix_clk_100hz/10000.0;
if (timing->timing_3d_format == TIMING_3D_FORMAT_HW_FRAME_PACKING)