Currently, nouveau doesn't actually bother to try probing whether or not it can actually handle interlaced modes over DisplayPort. As a result, on volta and later we'll end up trying to set an interlaced mode even when it's not supported and cause the front end for the display engine to hang.
So, let's teach nouveau to reject interlaced modes on hardware that can't actually handle it. Additionally for MST, since we accomplish this by simply reusing more of the SST mode validation we also get (some) basic bw validation for modes we detect on MST connectors completely for free.
Lyude Paul (4): drm/nouveau/kms/nv50-: Probe SOR caps for DP interlacing support drm/nouveau/kms/gv100-: Add support for interlaced modes drm/nouveau/kms/nv50-: Move 8BPC limit for MST into nv50_mstc_get_modes() drm/nouveau/kms/nv50-: Share DP SST mode_valid() handling with MST
drivers/gpu/drm/nouveau/dispnv50/disp.c | 55 ++++++++++++++------- drivers/gpu/drm/nouveau/dispnv50/headc37d.c | 5 +- drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 5 +- drivers/gpu/drm/nouveau/nouveau_connector.c | 43 ++++++++++------ drivers/gpu/drm/nouveau/nouveau_connector.h | 5 ++ drivers/gpu/drm/nouveau/nouveau_dp.c | 27 ++++++++++ drivers/gpu/drm/nouveau/nouveau_encoder.h | 7 +++ 7 files changed, 108 insertions(+), 39 deletions(-)