diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2022-06-01 20:46:35 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2022-11-09 10:43:10 +1000 |
| commit | 8bb30c882334c0fdbec9b604f09d2e9120b509ab (patch) | |
| tree | 467441811efe8c1185e771639667f8e0f304782c /drivers/gpu/drm/nouveau/nouveau_dp.c | |
| parent | 016dacb60e6d4b301c5941a0dedb49d337926832 (diff) | |
drm/nouveau/disp: add method to trigger DP link retrain
This moves control of link retraining in response to HPD IRQ to the
KMS driver's HPD IRQ handler.
NVKM still handles checking link status for the moment, this can be
moved to the KMS driver when it takes explicit control of link rate
selection.
v2:
- skip source config on retrain (fixes some retrain failures)
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dp.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index d349dc24a003..bde58d00fbf5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -211,6 +211,17 @@ out: return ret; } +bool +nouveau_dp_link_check(struct nouveau_connector *nv_connector) +{ + struct nouveau_encoder *nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP); + + if (!nv_encoder || nv_encoder->outp.or.id < 0) + return true; + + return nvif_outp_dp_retrain(&nv_encoder->outp) == 0; +} + void nouveau_dp_irq(struct nouveau_drm *drm, struct nouveau_connector *nv_connector) { |