diff options
| author | Peichen Huang <PeiChen.Huang@amd.com> | 2024-12-04 15:20:10 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-01-06 14:44:27 -0500 |
| commit | 44063dbcdbd8abf172b8cc30e18d7e2948e9d699 (patch) | |
| tree | 877462dcff72cf9fb138066bd7bb81f38e4f98b9 /drivers/gpu/drm/amd/display/dc/link/link_detection.c | |
| parent | drm/amd/display: Implement Replay Low Hz Visual Confirm (diff) | |
| download | linux-44063dbcdbd8abf172b8cc30e18d7e2948e9d699.tar.gz linux-44063dbcdbd8abf172b8cc30e18d7e2948e9d699.zip | |
drm/amd/display: have pretrain for dpia
[WHY]
We like to have pretrain for dpia link so that dp and dp tunneling
have aligned behavior. The Main difficult for dpia pretrain is that
encoder can not get corresponded dpia port when link detection
in current implementation.
[HOW]
1. create enable/disable dpia output functions for dcn35 encoder
and have dpia_id and other necessary info as inputs.
2. dcn35 dpia use the new functions to enable/disable output.
3. have a option to enable/disable the change.
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Signed-off-by: Peichen Huang <PeiChen.Huang@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>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/link_detection.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_detection.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index e026c728042a..550e1a098fa2 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -829,7 +829,8 @@ static bool should_verify_link_capability_destructively(struct dc_link *link, if (link->dc->debug.skip_detection_link_training || dc_is_embedded_signal(link->local_sink->sink_signal) || - link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) { + (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && + !link->dc->config.enable_dpia_pre_training)) { destrictive = false; } else if (link_dp_get_encoding_format(&max_link_cap) == DP_8b_10b_ENCODING) { |