github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-30 10:04:04 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/amd/display: Fix timing bandwidth calculation for HDMI

Browse Source 
[Why && How]
The current bandwidth calculation for timing doesn't account for
certain HDMI modes overhead which leads to DSC can't be enabled.
Add support to calculate the actual bandwidth for these HDMI modes.

Reviewed-by: Chris Park <chris.park@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Hanghong) Ma 2024-01-04 13:29:32 -05:00 committed by Alex Deucher
parent aa708057c4
commit c597479f27
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/amd/display/dc/dc_hw_types.h
View File

@ -942,6 +942,7 @@ struct dc_crtc_timing {
uint32_t hdmi_vic;
uint32_t rid;
uint32_t fr_index;
uint32_t frl_uncompressed_video_bandwidth_in_kbps;
enum dc_timing_3d_format timing_3d_format;
enum dc_color_depth display_color_depth;
enum dc_pixel_encoding pixel_encoding;

5
drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
View File

@ -137,6 +137,11 @@ uint32_t dc_bandwidth_in_kbps_from_timing(
if (link_encoding == DC_LINK_ENCODING_DP_128b_132b)
kbps = apply_128b_132b_stream_overhead(timing, kbps);
if (link_encoding == DC_LINK_ENCODING_HDMI_FRL &&
timing->vic == 0 && timing->hdmi_vic == 0 &&
timing->frl_uncompressed_video_bandwidth_in_kbps != 0)
kbps = timing->frl_uncompressed_video_bandwidth_in_kbps;
return kbps;
}