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drm/imx: use drm_send_vblank_event() helper

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Also, slightly changes the behavior to always put the vblank irq,
even if userspace did not request a vblank event.  As far as I
can tell, the previous code would leak a vblank irq refcnt if
userspace requested a pageflip without event.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rob Clark 2012-10-08 19:50:46 +00:00 committed by Dave Airlie
parent f7e96d7e28
commit 0eca56f946
1 changed files with 2 additions and 19 deletions
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21
drivers/staging/imx-drm/ipuv3-crtc.c
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@ -311,31 +311,14 @@ static int ipu_crtc_mode_set(struct drm_crtc *crtc,
static void ipu_crtc_handle_pageflip(struct ipu_crtc *ipu_crtc) static void ipu_crtc_handle_pageflip(struct ipu_crtc *ipu_crtc)
{ {
struct drm_pending_vblank_event *e;
struct timeval now;
unsigned long flags; unsigned long flags;
struct drm_device *drm = ipu_crtc->base.dev; struct drm_device *drm = ipu_crtc->base.dev;
spin_lock_irqsave(&drm->event_lock, flags); spin_lock_irqsave(&drm->event_lock, flags);
if (ipu_crtc->page_flip_event)
e = ipu_crtc->page_flip_event; drm_send_vblank_event(drm, -1, ipu_crtc->page_flip_event);
if (!e) {
spin_unlock_irqrestore(&drm->event_lock, flags);
return;
}
do_gettimeofday(&now);
e->event.sequence = 0;
e->event.tv_sec = now.tv_sec;
e->event.tv_usec = now.tv_usec;
ipu_crtc->page_flip_event = NULL; ipu_crtc->page_flip_event = NULL;
imx_drm_crtc_vblank_put(ipu_crtc->imx_crtc); imx_drm_crtc_vblank_put(ipu_crtc->imx_crtc);
list_add_tail(&e->base.link, &e->base.file_priv->event_list);
wake_up_interruptible(&e->base.file_priv->event_wait);
spin_unlock_irqrestore(&drm->event_lock, flags); spin_unlock_irqrestore(&drm->event_lock, flags);
} }