drm/amd/display: Parse RECEIVE_PORT0_CAP capabilities from DPCD

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[Why]
DPCD register RECEIVE_PORT0_CAP contains HBlank expansion/reduction
capabilities of a DP device. These capabilities are required to enable
HBlank expansion/reduction logic.

[How]
Read raw RECEIVE_PORT0_CAP register values and store parsed fields.

Reviewed-by: Wenjing Liu <wenjing.liu@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>

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George Shen 2024-12-04 18:10:18 -05:00 • committed by Alex Deucher

parent f0aece43ee

commit e79cba63de

4 changed files with 37 additions and 0 deletions

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8

drivers/gpu/drm/amd/display/dc/dc.h

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16

drivers/gpu/drm/amd/display/dc/dc_dp_types.h

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8

drivers/gpu/drm/amd/display/dc/dc_types.h

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5

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c

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