/**
* drm_get_last_vbltimestamp - retrieve raw timestamp for the most recent
- * vblank interval
+ * vblank interval
* @dev: DRM device
* @crtc: which CRTC's vblank timestamp to retrieve
* @tvblank: Pointer to target struct timeval which should receive the timestamp
* vblank events since the system was booted, including lost events due to
* modesetting activity.
*
+ * This is the legacy version of drm_crtc_vblank_count().
+ *
* Returns:
* The software vblank counter.
*/
}
EXPORT_SYMBOL(drm_vblank_count);
+/**
+ * drm_crtc_vblank_count - retrieve "cooked" vblank counter value
+ * @crtc: which counter to retrieve
+ *
+ * Fetches the "cooked" vblank count value that represents the number of
+ * vblank events since the system was booted, including lost events due to
+ * modesetting activity.
+ *
+ * This is the native KMS version of drm_vblank_count().
+ *
+ * Returns:
+ * The software vblank counter.
+ */
+u32 drm_crtc_vblank_count(struct drm_crtc *crtc)
+{
+ return drm_vblank_count(crtc->dev, drm_crtc_index(crtc));
+}
+EXPORT_SYMBOL(drm_crtc_vblank_count);
+
/**
* drm_vblank_count_and_time - retrieve "cooked" vblank counter value
* and the system timestamp corresponding to that vblank counter value.
*
* Updates sequence # and timestamp on event, and sends it to userspace.
* Caller must hold event lock.
+ *
+ * This is the legacy version of drm_crtc_send_vblank_event().
*/
void drm_send_vblank_event(struct drm_device *dev, int crtc,
struct drm_pending_vblank_event *e)
{
struct timeval now;
unsigned int seq;
+
if (crtc >= 0) {
seq = drm_vblank_count_and_time(dev, crtc, &now);
} else {
}
EXPORT_SYMBOL(drm_send_vblank_event);
+/**
+ * drm_crtc_send_vblank_event - helper to send vblank event after pageflip
+ * @crtc: the source CRTC of the vblank event
+ * @e: the event to send
+ *
+ * Updates sequence # and timestamp on event, and sends it to userspace.
+ * Caller must hold event lock.
+ *
+ * This is the native KMS version of drm_send_vblank_event().
+ */
+void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
+ struct drm_pending_vblank_event *e)
+{
+ drm_send_vblank_event(crtc->dev, drm_crtc_index(crtc), e);
+}
+EXPORT_SYMBOL(drm_crtc_send_vblank_event);
+
/**
* drm_vblank_enable - enable the vblank interrupt on a CRTC
* @dev: DRM device
}
EXPORT_SYMBOL(drm_crtc_vblank_off);
+/**
+ * drm_crtc_vblank_reset - reset vblank state to off on a CRTC
+ * @crtc: CRTC in question
+ *
+ * Drivers can use this function to reset the vblank state to off at load time.
+ * Drivers should use this together with the drm_crtc_vblank_off() and
+ * drm_crtc_vblank_on() functions. The difference compared to
+ * drm_crtc_vblank_off() is that this function doesn't save the vblank counter
+ * and hence doesn't need to call any driver hooks.
+ */
+void drm_crtc_vblank_reset(struct drm_crtc *drm_crtc)
+{
+ struct drm_device *dev = drm_crtc->dev;
+ unsigned long irqflags;
+ int crtc = drm_crtc_index(drm_crtc);
+ struct drm_vblank_crtc *vblank = &dev->vblank[crtc];
+
+ spin_lock_irqsave(&dev->vbl_lock, irqflags);
+ /*
+ * Prevent subsequent drm_vblank_get() from enabling the vblank
+ * interrupt by bumping the refcount.
+ */
+ if (!vblank->inmodeset) {
+ atomic_inc(&vblank->refcount);
+ vblank->inmodeset = 1;
+ }
+ spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+
+ WARN_ON(!list_empty(&dev->vblank_event_list));
+}
+EXPORT_SYMBOL(drm_crtc_vblank_reset);
+
/**
* drm_vblank_on - enable vblank events on a CRTC
* @dev: DRM device
unsigned int seq;
int ret;
- e = kzalloc(sizeof *e, GFP_KERNEL);
+ e = kzalloc(sizeof(*e), GFP_KERNEL);
if (e == NULL) {
ret = -ENOMEM;
goto err_put;
e->pipe = pipe;
e->base.pid = current->pid;
e->event.base.type = DRM_EVENT_VBLANK;
- e->event.base.length = sizeof e->event;
+ e->event.base.length = sizeof(e->event);
e->event.user_data = vblwait->request.signal;
e->base.event = &e->event.base;
e->base.file_priv = file_priv;
goto err_unlock;
}
- if (file_priv->event_space < sizeof e->event) {
+ if (file_priv->event_space < sizeof(e->event)) {
ret = -EBUSY;
goto err_unlock;
}
- file_priv->event_space -= sizeof e->event;
+ file_priv->event_space -= sizeof(e->event);
seq = drm_vblank_count_and_time(dev, pipe, &now);
if ((vblwait->request.type & _DRM_VBLANK_NEXTONMISS) &&
*
* Drivers should call this routine in their vblank interrupt handlers to
* update the vblank counter and send any signals that may be pending.
+ *
+ * This is the legacy version of drm_crtc_handle_vblank().
*/
bool drm_handle_vblank(struct drm_device *dev, int crtc)
{
return true;
}
EXPORT_SYMBOL(drm_handle_vblank);
+
+/**
+ * drm_crtc_handle_vblank - handle a vblank event
+ * @crtc: where this event occurred
+ *
+ * Drivers should call this routine in their vblank interrupt handlers to
+ * update the vblank counter and send any signals that may be pending.
+ *
+ * This is the native KMS version of drm_handle_vblank().
+ *
+ * Returns:
+ * True if the event was successfully handled, false on failure.
+ */
+bool drm_crtc_handle_vblank(struct drm_crtc *crtc)
+{
+ return drm_handle_vblank(crtc->dev, drm_crtc_index(crtc));
+}
+EXPORT_SYMBOL(drm_crtc_handle_vblank);
projects / firefly-linux-kernel-4.4.55.git / blobdiff