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| author | Ben Skeggs <bskeggs@redhat.com> | 2016-11-04 10:20:36 +0300 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2016-11-07 07:04:50 +0300 |
| commit | 52aa30f2524d065c6f251d78e906966fed8291eb (patch) | |
| tree | cfe4ef0804a8f29ced0c164c0224e43ae9508a2b /drivers/gpu/drm/nouveau/nouveau_connector.c | |
| parent | fc21a4a0993a9d8d72facccad3ab6f19d8d706fb (diff) | |
| download | linux-52aa30f2524d065c6f251d78e906966fed8291eb.tar.xz | |
drm/nouveau/kms/nv50: switch mst sink back into sst mode
Sometimes we load with a sink already in MST mode. If, however, we can't
or don't want to use MST, we need to be able to switch it back to SST.
This commit instantiates a stub topology manager for any output path that
we believe (the detection of this could use some improvement) has support
for MST, and adds the connector detect() logic for detecting sink support
and switching between modes.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_connector.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_connector.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c index 794b161c889c..b69ba828d916 100644 --- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -447,7 +447,9 @@ nouveau_connector_ddc_detect(struct drm_connector *connector) if (nv_encoder->dcb->type == DCB_OUTPUT_DP) { int ret = nouveau_dp_detect(nv_encoder); - if (ret == 0) + if (ret == NOUVEAU_DP_MST) + return NULL; + if (ret == NOUVEAU_DP_SST) break; } else if ((vga_switcheroo_handler_flags() & |