diff options
| author | Ian Chen <ian.chen@amd.com> | 2022-11-28 16:17:34 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-12-15 12:18:18 -0500 |
| commit | 639f6ad6df7f47db48b59956b469a6917a136afb (patch) | |
| tree | b0858bc791b12d796575bf572dfaec7bd22e1e52 /drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | |
| parent | 6e18c9b35e2d5237ed8efa03724ee5de2d16ee74 (diff) | |
drm/amd/display: Revert Reduce delay when sink device not able to ACK 00340h write
[WHY]
It causes regression AMD source will not write DPCD 340.
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Ian Chen <ian.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index dedd1246ce58..475ad3eed002 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -6554,18 +6554,10 @@ void dpcd_set_source_specific_data(struct dc_link *link) uint8_t hblank_size = (uint8_t)link->dc->caps.min_horizontal_blanking_period; - if (link->preferred_link_setting.dpcd_source_device_specific_field_support) { - result_write_min_hblank = core_link_write_dpcd(link, - DP_SOURCE_MINIMUM_HBLANK_SUPPORTED, (uint8_t *)(&hblank_size), - sizeof(hblank_size)); - - if (result_write_min_hblank == DC_ERROR_UNEXPECTED) - link->preferred_link_setting.dpcd_source_device_specific_field_support = false; - } else { - DC_LOG_DC("Sink device does not support 00340h DPCD write. Skipping on purpose.\n"); - } + result_write_min_hblank = core_link_write_dpcd(link, + DP_SOURCE_MINIMUM_HBLANK_SUPPORTED, (uint8_t *)(&hblank_size), + sizeof(hblank_size)); } - DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, WPP_BIT_FLAG_DC_DETECTION_DP_CAPS, "result=%u link_index=%u enum dce_version=%d DPCD=0x%04X min_hblank=%u branch_dev_id=0x%x branch_dev_name='%c%c%c%c%c%c'", |