diff options
author | Eric Anholt <eric@anholt.net> | 2009-12-01 09:01:54 -0800 |
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committer | Eric Anholt <eric@anholt.net> | 2009-12-01 09:01:54 -0800 |
commit | f40d6817a5c2bf84f5fe7b5d1a83f1e8f8669951 (patch) | |
tree | 1c515a34a60f65cbfd3cf1a387427d0a9fdf878f /drivers/gpu/drm/drm_crtc.c | |
parent | 103a196f4224dc6872081305cf7f82ebf67aa7bd (diff) | |
parent | 46557bef3f3834ac33031c7be27d39d90d507442 (diff) | |
download | linux-next-f40d6817a5c2bf84f5fe7b5d1a83f1e8f8669951.tar.gz |
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.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index ee0cde1ecca5..ac2fa193072b 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; +} |