diff options
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 77 |
1 files changed, 65 insertions, 12 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index a17b8e9..4a78a77 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -751,6 +751,33 @@ static void wait_for_fences(struct drm_device *dev, } } +static bool framebuffer_changed(struct drm_device *dev, + struct drm_atomic_state *old_state, + struct drm_crtc *crtc) +{ + struct drm_plane *plane; + struct drm_plane_state *old_plane_state; + int nplanes = old_state->dev->mode_config.num_total_plane; + int i; + + for (i = 0; i < nplanes; i++) { + plane = old_state->planes[i]; + old_plane_state = old_state->plane_states[i]; + + if (!plane) + continue; + + if (plane->state->crtc != crtc && + old_plane_state->crtc != crtc) + continue; + + if (plane->state->fb != old_plane_state->fb) + return true; + } + + return false; +} + /** * drm_atomic_helper_wait_for_vblanks - wait for vblank on crtcs * @dev: DRM device @@ -758,7 +785,9 @@ static void wait_for_fences(struct drm_device *dev, * * Helper to, after atomic commit, wait for vblanks on all effected * crtcs (ie. before cleaning up old framebuffers using - * drm_atomic_helper_cleanup_planes()) + * drm_atomic_helper_cleanup_planes()). It will only wait on crtcs where the + * framebuffers have actually changed to optimize for the legacy cursor and + * plane update use-case. */ void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, @@ -784,6 +813,9 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device *dev, if (!crtc->state->enable) continue; + if (!framebuffer_changed(dev, old_state, crtc)) + continue; + ret = drm_crtc_vblank_get(crtc); if (ret != 0) continue; @@ -1014,6 +1046,7 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev, for (i = 0; i < nplanes; i++) { struct drm_plane_helper_funcs *funcs; struct drm_plane *plane = old_state->planes[i]; + struct drm_plane_state *old_plane_state; if (!plane) continue; @@ -1023,7 +1056,9 @@ void drm_atomic_helper_commit_planes(struct drm_device *dev, if (!funcs || !funcs->atomic_update) continue; - funcs->atomic_update(plane); + old_plane_state = old_state->plane_states[i]; + + funcs->atomic_update(plane, old_plane_state); } for (i = 0; i < ncrtcs; i++) { @@ -1187,7 +1222,7 @@ retry: goto fail; } - ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); + ret = drm_atomic_set_crtc_for_plane(state, plane, crtc); if (ret != 0) goto fail; drm_atomic_set_fb_for_plane(plane_state, fb); @@ -1243,6 +1278,17 @@ int drm_atomic_helper_disable_plane(struct drm_plane *plane) struct drm_plane_state *plane_state; int ret = 0; + /* + * FIXME: Without plane->crtc set we can't get at the implicit legacy + * acquire context. The real fix will be to wire the acquire ctx through + * everywhere we need it, but meanwhile prevent chaos by just skipping + * this noop. The critical case is the cursor ioctls which a) only grab + * crtc/cursor-plane locks (so we need the crtc to get at the right + * acquire context) and b) can try to disable the plane multiple times. + */ + if (!plane->crtc) + return 0; + state = drm_atomic_state_alloc(plane->dev); if (!state) return -ENOMEM; @@ -1255,7 +1301,7 @@ retry: goto fail; } - ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); + ret = drm_atomic_set_crtc_for_plane(state, plane, NULL); if (ret != 0) goto fail; drm_atomic_set_fb_for_plane(plane_state, NULL); @@ -1406,11 +1452,24 @@ retry: goto fail; } + primary_state = drm_atomic_get_plane_state(state, crtc->primary); + if (IS_ERR(primary_state)) { + ret = PTR_ERR(primary_state); + goto fail; + } + if (!set->mode) { WARN_ON(set->fb); WARN_ON(set->num_connectors); crtc_state->enable = false; + + ret = drm_atomic_set_crtc_for_plane(state, crtc->primary, NULL); + if (ret != 0) + goto fail; + + drm_atomic_set_fb_for_plane(primary_state, NULL); + goto commit; } @@ -1420,13 +1479,7 @@ retry: crtc_state->enable = true; drm_mode_copy(&crtc_state->mode, set->mode); - primary_state = drm_atomic_get_plane_state(state, crtc->primary); - if (IS_ERR(primary_state)) { - ret = PTR_ERR(primary_state); - goto fail; - } - - ret = drm_atomic_set_crtc_for_plane(primary_state, crtc); + ret = drm_atomic_set_crtc_for_plane(state, crtc->primary, crtc); if (ret != 0) goto fail; drm_atomic_set_fb_for_plane(primary_state, set->fb); @@ -1698,7 +1751,7 @@ retry: goto fail; } - ret = drm_atomic_set_crtc_for_plane(plane_state, crtc); + ret = drm_atomic_set_crtc_for_plane(state, plane, crtc); if (ret != 0) goto fail; drm_atomic_set_fb_for_plane(plane_state, fb); |
