diff options
| author |   Jimmy Kizito <Jimmy.Kizito@amd.com> | 2021-04-05 18:05:09 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-05-10 18:09:53 -0400 |
| commit | ede4f6dac99e4b59a7319b9617eff10705045aa2 (patch) | |
| tree | 17499b49c0ca318352636da6116f59af2fe10f61 /drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | |
| parent | drm/amd/display: Update DPRX detection. (diff) | |
| download | linux-dev-ede4f6dac99e4b59a7319b9617eff10705045aa2.tar.xz linux-dev-ede4f6dac99e4b59a7319b9617eff10705045aa2.zip | |
drm/amd/display: Update setting of DP training parameters.
[Why]
Some links are dynamically assigned link encoders on stream enablement.
[How]
Update DisplayPort training parameter determination stage that assumes
link encoder statically assigned to link.
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Stylon Wang <stylon.wang@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/core/dc_link_ddc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c index 3bdd54e6248a..ba6b56f20269 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c @@ -685,6 +685,10 @@ bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc, bool result = false; struct ddc *ddc_pin = ddc->ddc_pin; + /* Do not try to access nonexistent DDC pin. */ + if (ddc->link->ep_type != DISPLAY_ENDPOINT_PHY) + return true; + if (ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout) { ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout(ddc, timeout); result = true; |