Merge tag 'topic/core-stuff-2014-12-19' of git://anongit.freedesktop.org/drm-intel...

[uclinux-h8/linux.git] / drivers / gpu / drm / drm_irq.c

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index f5a5f18..75647e7 100644 (file)
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -778,7 +778,7 @@ static struct timeval get_drm_timestamp(void)
 
 /**
  * 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
@@ -830,6 +830,8 @@ drm_get_last_vbltimestamp(struct drm_device *dev, int crtc,
  * 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.
  */
@@ -844,6 +846,25 @@ u32 drm_vblank_count(struct drm_device *dev, int crtc)
 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.
  *
@@ -904,12 +925,15 @@ static void send_vblank_event(struct drm_device *dev,
  *
  * 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 {
@@ -923,6 +947,23 @@ void drm_send_vblank_event(struct drm_device *dev, int crtc,
 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
  * @crtc: CRTC in question
@@ -1382,7 +1423,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
        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;
@@ -1391,7 +1432,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
        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;
@@ -1411,12 +1452,12 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
                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) &&
@@ -1594,6 +1635,8 @@ static void drm_handle_vblank_events(struct drm_device *dev, int crtc)
  *
  * 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)
 {
@@ -1670,3 +1713,21 @@ 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);