diff options
| author | Gary Li <garyli12@amd.com> | 2022-04-14 16:01:48 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-04-26 00:11:27 +0300 |
| commit | 9fbfeaf110714dd6176e209230569c2dd9a9ad08 (patch) | |
| tree | d4e393cbf088bb85bb5d81234dee57e1cb582f2d /drivers/gpu/drm | |
| parent | e953cd08d78256764721e459ce11f9d41e8934f9 (diff) | |
| download | linux-9fbfeaf110714dd6176e209230569c2dd9a9ad08.tar.xz | |
drm/amd/display: Maintain current link settings in link loss interrupt
[Why]
DP compliance test case 400.3.2.3 is failed because in link loss interrupt
the current link settings is not used in the DP link training.
[How]
In link loss interrupt, use the current link settings in the following DP
link training.
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Gary Li <garyli12@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')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 9 |
1 files changed, 9 insertions, 0 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 10f990eefe7d..50a12fd08f4a 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 @@ -4576,6 +4576,7 @@ void dc_link_dp_handle_link_loss(struct dc_link *link) { int i; struct pipe_ctx *pipe_ctx; + struct dc_link_settings prev_link_settings = link->preferred_link_setting; for (i = 0; i < MAX_PIPES; i++) { pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i]; @@ -4586,6 +4587,10 @@ void dc_link_dp_handle_link_loss(struct dc_link *link) if (pipe_ctx == NULL || pipe_ctx->stream == NULL) return; + /* toggle stream state with the preference for current link settings */ + dc_link_set_preferred_training_settings((struct dc *)link->dc, + &link->cur_link_settings, NULL, link, true); + for (i = 0; i < MAX_PIPES; i++) { pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i]; if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off && @@ -4601,6 +4606,10 @@ void dc_link_dp_handle_link_loss(struct dc_link *link) core_link_enable_stream(link->dc->current_state, pipe_ctx); } } + + /* restore previous link settings preference */ + dc_link_set_preferred_training_settings((struct dc *)link->dc, + &prev_link_settings, NULL, link, true); } bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss, |