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drm/amd/display: Add expanded HBlank field to dc_crtc_timing

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[Why]
For DP HBlank expansion/reduction, the HBlank parameters of the original
EDID timing needs to be notified to the sink in order for the timing to
be reduced back to the original HBlank size.

[How]
Add parameter in dc_crtc_timing to track the increased HBlank.

Reviewed-by: Michael Strauss <michael.strauss@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
George Shen
2024-12-09 10:57:31 -05:00
committed by Alex Deucher
parent 3ed56d9e8f
commit bce2dc0094
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/dc_hw_types.h
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@@ -975,6 +975,9 @@ struct dc_crtc_timing {
struct dc_crtc_timing_flags flags;
uint32_t dsc_fixed_bits_per_pixel_x16; /* DSC target bitrate in 1/16 of bpp (e.g. 128 -> 8bpp) */
struct dc_dsc_config dsc_cfg;
/* The number of pixels that HBlank has been expanded by from the original EDID timing. */
uint32_t expanded_hblank;
};
enum trigger_delay {