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| author | George Shen <george.shen@amd.com> | 2023-11-22 02:32:52 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-16 02:35:39 +0300 |
| commit | 12f72a1599dc90b7f698b6a86a477ca4f2ef1f8e (patch) | |
| tree | dbf59bfadda3fc5ed456695b3a565378e60895f5 /drivers/gpu/drm/amd/display/include | |
| parent | d451b534e0b409abc3c5733c66e32708f443abf1 (diff) | |
| download | linux-12f72a1599dc90b7f698b6a86a477ca4f2ef1f8e.tar.xz | |
drm/amd/display: Add DP audio BW validation
[Why]
Timings with small HBlank (such as CVT RBv2) can result in insufficient
HBlank bandwidth for audio SDP transmission when DSC is active. This
will cause some higher bandwidth audio modes to fail.
The combination of CVT RBv2 timings + DSC can commonly be encountered
in MST scenarios.
[How]
Add DP audio bandwidth validation for 8b/10b MST and 128b/132b SST/MST
cases and filter out modes that cannot be supported with the current
timing config.
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/include')
| -rw-r--r-- | drivers/gpu/drm/amd/display/include/audio_types.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/include/audio_types.h b/drivers/gpu/drm/amd/display/include/audio_types.h index 915a031a43cb..e4a26143f14c 100644 --- a/drivers/gpu/drm/amd/display/include/audio_types.h +++ b/drivers/gpu/drm/amd/display/include/audio_types.h @@ -27,11 +27,21 @@ #define __AUDIO_TYPES_H__ #include "signal_types.h" +#include "fixed31_32.h" +#include "dc_dp_types.h" #define AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS 20 #define MAX_HW_AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS 18 #define MULTI_CHANNEL_SPLIT_NO_ASSO_INFO 0xFFFFFFFF +struct audio_dp_link_info { + uint32_t link_bandwidth_kbps; + uint32_t hblank_min_symbol_width; + enum dp_link_encoding encoding; + enum dc_link_rate link_rate; + enum dc_lane_count lane_count; + bool is_mst; +}; struct audio_crtc_info { uint32_t h_total; @@ -42,7 +52,10 @@ struct audio_crtc_info { uint32_t calculated_pixel_clock_100Hz; /* in 100Hz */ uint32_t refresh_rate; enum dc_color_depth color_depth; + enum dc_pixel_encoding pixel_encoding; bool interlaced; + uint32_t dsc_bits_per_pixel; + uint32_t dsc_num_slices; }; struct azalia_clock_info { uint32_t pixel_clock_in_10khz; @@ -95,6 +108,8 @@ struct audio_output { enum signal_type signal; /* video timing */ struct audio_crtc_info crtc_info; + /* DP link info */ + struct audio_dp_link_info dp_link_info; /* PLL for audio */ struct audio_pll_info pll_info; }; |