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authorEric Anholt <eric@anholt.net>2009-12-01 09:01:54 -0800
committerEric Anholt <eric@anholt.net>2009-12-01 09:01:54 -0800
commitf40d6817a5c2bf84f5fe7b5d1a83f1e8f8669951 (patch)
tree1c515a34a60f65cbfd3cf1a387427d0a9fdf878f /drivers/gpu/drm/drm_crtc.c
parent103a196f4224dc6872081305cf7f82ebf67aa7bd (diff)
parent46557bef3f3834ac33031c7be27d39d90d507442 (diff)
Merge remote branch 'airlied/drm-next' into drm-intel-next
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
-rw-r--r--drivers/gpu/drm/drm_crtc.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index ee0cde1ecca..ac2fa193072 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2479,3 +2479,72 @@ out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
+
+int drm_mode_page_flip_ioctl(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_crtc_page_flip *page_flip = data;
+ struct drm_mode_object *obj;
+ struct drm_crtc *crtc;
+ struct drm_framebuffer *fb;
+ struct drm_pending_vblank_event *e = NULL;
+ unsigned long flags;
+ int ret = -EINVAL;
+
+ if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS ||
+ page_flip->reserved != 0)
+ return -EINVAL;
+
+ mutex_lock(&dev->mode_config.mutex);
+ obj = drm_mode_object_find(dev, page_flip->crtc_id, DRM_MODE_OBJECT_CRTC);
+ if (!obj)
+ goto out;
+ crtc = obj_to_crtc(obj);
+
+ if (crtc->funcs->page_flip == NULL)
+ goto out;
+
+ obj = drm_mode_object_find(dev, page_flip->fb_id, DRM_MODE_OBJECT_FB);
+ if (!obj)
+ goto out;
+ fb = obj_to_fb(obj);
+
+ if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
+ ret = -ENOMEM;
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (file_priv->event_space < sizeof e->event) {
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ goto out;
+ }
+ file_priv->event_space -= sizeof e->event;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+
+ e = kzalloc(sizeof *e, GFP_KERNEL);
+ if (e == NULL) {
+ spin_lock_irqsave(&dev->event_lock, flags);
+ file_priv->event_space += sizeof e->event;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ goto out;
+ }
+
+ e->event.base.type = DRM_EVENT_VBLANK;
+ e->event.base.length = sizeof e->event;
+ e->event.user_data = page_flip->user_data;
+ e->base.event = &e->event.base;
+ e->base.file_priv = file_priv;
+ e->base.destroy =
+ (void (*) (struct drm_pending_event *)) kfree;
+ }
+
+ ret = crtc->funcs->page_flip(crtc, fb, e);
+ if (ret) {
+ spin_lock_irqsave(&dev->event_lock, flags);
+ file_priv->event_space += sizeof e->event;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ kfree(e);
+ }
+
+out:
+ mutex_unlock(&dev->mode_config.mutex);
+ return ret;
+}