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drm/amd/display: Enable Freesync over PCon

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[why]
Enable Freesync over PCon on Linux environment.

[how]
Adding Freesync over PCon support in amdgpu_dm
- Read DPCD for Freesync over PCon capabilitiy
- Add whitelist for compatible branch devices

Reviewed-by: Chao-kai Wang <Stylon.Wang@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Sung Joon Kim <sungkim@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Joon Kim
2023-01-12 10:38:10 -05:00
committed by Alex Deucher
parent 634d0aa54e
commit 5b49da02dd
7 changed files with 118 additions and 37 deletions
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1
drivers/gpu/drm/amd/display/dc/dm_helpers.h
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@@ -199,6 +199,7 @@ int dm_helpers_dmub_set_config_sync(struct dc_context *ctx,
const struct dc_link *link,
struct set_config_cmd_payload *payload,
enum set_config_status *operation_result);
enum adaptive_sync_type dm_get_adaptive_sync_support_type(struct dc_link *link);
enum dc_edid_status dm_helpers_get_sbios_edid(struct dc_link *link, struct dc_edid *edid);