diff options
Diffstat (limited to 'drivers/gpu/drm/drm_blend.c')
| -rw-r--r-- | drivers/gpu/drm/drm_blend.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c index b4c8cab7158c..6852d73c931c 100644 --- a/drivers/gpu/drm/drm_blend.c +++ b/drivers/gpu/drm/drm_blend.c @@ -75,6 +75,12 @@ * the currently visible vertical area of the &drm_crtc. * FB_ID: * Mode object ID of the &drm_framebuffer this plane should scan out. + * + * When a KMS client is performing front-buffer rendering, it should set + * FB_ID to the same front-buffer FB on each atomic commit. This implies + * to the driver that it needs to re-read the same FB again. Otherwise + * drivers which do not employ continuously repeated scanout cycles might + * not update the screen. * CRTC_ID: * Mode object ID of the &drm_crtc this plane should be connected to. * @@ -450,8 +456,8 @@ static int drm_atomic_helper_crtc_normalize_zpos(struct drm_crtc *crtc, int i, n = 0; int ret = 0; - DRM_DEBUG_ATOMIC("[CRTC:%d:%s] calculating normalized zpos values\n", - crtc->base.id, crtc->name); + drm_dbg_atomic(dev, "[CRTC:%d:%s] calculating normalized zpos values\n", + crtc->base.id, crtc->name); states = kmalloc_array(total_planes, sizeof(*states), GFP_KERNEL); if (!states) @@ -469,9 +475,8 @@ static int drm_atomic_helper_crtc_normalize_zpos(struct drm_crtc *crtc, goto done; } states[n++] = plane_state; - DRM_DEBUG_ATOMIC("[PLANE:%d:%s] processing zpos value %d\n", - plane->base.id, plane->name, - plane_state->zpos); + drm_dbg_atomic(dev, "[PLANE:%d:%s] processing zpos value %d\n", + plane->base.id, plane->name, plane_state->zpos); } sort(states, n, sizeof(*states), drm_atomic_state_zpos_cmp, NULL); @@ -480,8 +485,8 @@ static int drm_atomic_helper_crtc_normalize_zpos(struct drm_crtc *crtc, plane = states[i]->plane; states[i]->normalized_zpos = i; - DRM_DEBUG_ATOMIC("[PLANE:%d:%s] normalized zpos value %d\n", - plane->base.id, plane->name, i); + drm_dbg_atomic(dev, "[PLANE:%d:%s] normalized zpos value %d\n", + plane->base.id, plane->name, i); } crtc_state->zpos_changed = true; |