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authorDave Airlie <airlied@redhat.com>2016-07-15 04:01:37 +0300
committerDave Airlie <airlied@redhat.com>2016-07-15 04:01:37 +0300
commit6c181c82106e12dced317e93a7a396cbb8c64f75 (patch)
tree95f81eaf5fa9e5539411f5d9690b31c7c0c20044 /drivers/gpu/drm/drm_atomic.c
parent1640142b3d900cd7e5bc593d130a84f9187d9819 (diff)
parent01d3434a565ada5ca084c68ec1e087ada5a7b157 (diff)
downloadlinux-6c181c82106e12dced317e93a7a396cbb8c64f75.tar.xz
Merge tag 'topic/drm-misc-2016-07-14' of git://anongit.freedesktop.org/drm-intel into drm-next
I recovered dri-devel backlog from my vacation, more misc stuff: - of_put_node fixes from Peter Chen (not all yet) - more patches from Gustavo to use kms-native drm_crtc_vblank_* funcs - docs sphinxification from Lukas Wunner - bunch of fixes all over from Dan Carpenter - more follow up work from Chris register/unregister rework in various places - vgem dma-buf export (for writing testcases) - small things all over from tons of different people * tag 'topic/drm-misc-2016-07-14' of git://anongit.freedesktop.org/drm-intel: (52 commits) drm: Don't overwrite user ioctl arg unless requested dma-buf/sync_file: improve Kconfig description for Sync Files MAINTAINERS: add entry for the Sync File Framework drm: Resurrect atomic rmfb code drm/vgem: Use PAGE_KERNEL in place of x86-specific PAGE_KERNEL_IO qxl: silence uninitialized variable warning qxl: check for kmap failures vga_switcheroo: Sphinxify docs drm: Restore double clflush on the last partial cacheline gpu: drm: rockchip_drm_drv: add missing of_node_put after calling of_parse_phandle gpu: drm: sti_vtg: add missing of_node_put after calling of_parse_phandle gpu: drm: sti_hqvdp: add missing of_node_put after calling of_parse_phandle gpu: drm: sti_vdo: add missing of_node_put after calling of_parse_phandle gpu: drm: sti_compositor: add missing of_node_put after calling of_parse_phandle drm/tilcdc: use drm_crtc_handle_vblank() drm/rcar-du: use drm_crtc_handle_vblank() drm/nouveau: use drm_crtc_handle_vblank() drm/atmel: use drm_crtc_handle_vblank() drm/armada: use drm_crtc_handle_vblank() drm: make drm_vblank_count_and_time() static ...
Diffstat (limited to 'drivers/gpu/drm/drm_atomic.c')
-rw-r--r--drivers/gpu/drm/drm_atomic.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 3cee084e9d28..9359be4a0ca9 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1589,6 +1589,72 @@ 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)
{