diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/dispnv50/disp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/dispnv50/disp.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index f949767698fc..bcb0310a41b6 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -2237,6 +2237,33 @@ nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) interlock[NV50_DISP_INTERLOCK_CORE] = 0; } + /* Finish updating head(s)... + * + * NVD is rather picky about both where window assignments can change, + * *and* about certain core and window channel states matching. + * + * The EFI GOP driver on newer GPUs configures window channels with a + * different output format to what we do, and the core channel update + * in the assign_windows case above would result in a state mismatch. + * + * Delay some of the head update until after that point to workaround + * the issue. This only affects the initial modeset. + * + * TODO: handle this better when adding flexible window mapping + */ + for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { + struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state); + struct nv50_head *head = nv50_head(crtc); + + NV_ATOMIC(drm, "%s: set %04x (clr %04x)\n", crtc->name, + asyh->set.mask, asyh->clr.mask); + + if (asyh->set.mask) { + nv50_head_flush_set_wndw(head, asyh); + interlock[NV50_DISP_INTERLOCK_CORE] = 1; + } + } + /* Update plane(s). */ for_each_new_plane_in_state(state, plane, new_plane_state, i) { struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state); |