diff options
| -rw-r--r-- | drivers/gpu/drm/drm_atomic.c | 66 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_internal.h | 1 |
3 files changed, 73 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index d99ab2f6663f..dac0875e669c 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1564,6 +1564,72 @@ void drm_atomic_clean_old_fb(struct drm_device *dev, } EXPORT_SYMBOL(drm_atomic_clean_old_fb); +int drm_atomic_remove_fb(struct drm_framebuffer *fb) +{ + struct drm_modeset_acquire_ctx ctx; + struct drm_device *dev = fb->dev; + struct drm_atomic_state *state; + struct drm_plane *plane; + int ret = 0; + unsigned plane_mask; + + state = drm_atomic_state_alloc(dev); + if (!state) + return -ENOMEM; + + drm_modeset_acquire_init(&ctx, 0); + state->acquire_ctx = &ctx; + +retry: + plane_mask = 0; + ret = drm_modeset_lock_all_ctx(dev, &ctx); + if (ret) + goto unlock; + + drm_for_each_plane(plane, dev) { + struct drm_plane_state *plane_state; + + if (plane->state->fb != fb) + continue; + + plane_state = drm_atomic_get_plane_state(state, plane); + if (IS_ERR(plane_state)) { + ret = PTR_ERR(plane_state); + goto unlock; + } + + drm_atomic_set_fb_for_plane(plane_state, NULL); + ret = drm_atomic_set_crtc_for_plane(plane_state, NULL); + if (ret) + goto unlock; + + plane_mask |= BIT(drm_plane_index(plane)); + + plane->old_fb = plane->fb; + plane->fb = NULL; + } + + if (plane_mask) + ret = drm_atomic_commit(state); + +unlock: + if (plane_mask) + drm_atomic_clean_old_fb(dev, plane_mask, ret); + + if (ret == -EDEADLK) { + drm_modeset_backoff(&ctx); + goto retry; + } + + if (ret || !plane_mask) + drm_atomic_state_free(state); + + drm_modeset_drop_locks(&ctx); + drm_modeset_acquire_fini(&ctx); + + return ret; +} + int drm_mode_atomic_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 578bd6f5ce83..9d3f80efc9cc 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -613,6 +613,11 @@ void drm_framebuffer_remove(struct drm_framebuffer *fb) * in this manner. */ if (drm_framebuffer_read_refcount(fb) > 1) { + if (dev->mode_config.funcs->atomic_commit) { + drm_atomic_remove_fb(fb); + goto out; + } + drm_modeset_lock_all(dev); /* remove from any CRTC */ drm_for_each_crtc(crtc, dev) { @@ -630,6 +635,7 @@ void drm_framebuffer_remove(struct drm_framebuffer *fb) drm_modeset_unlock_all(dev); } +out: drm_framebuffer_unreference(fb); } EXPORT_SYMBOL(drm_framebuffer_remove); diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 47a500b90fd7..b248e2238a05 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -125,6 +125,7 @@ int drm_atomic_get_property(struct drm_mode_object *obj, struct drm_property *property, uint64_t *val); int drm_mode_atomic_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +int drm_atomic_remove_fb(struct drm_framebuffer *fb); int drm_modeset_register_all(struct drm_device *dev); void drm_modeset_unregister_all(struct drm_device *dev); |