staging: drm/omap: use current time for page-flip event

Because we don't have vblank hooked up via drm_irq (which is a bit
awkward due to separation between omapdss (which knows the irq #)
and omapdrm, for now use gettimeofday to have a semi-sane timestamp
in the page-flip event.  Otherwise apps like weston drm compositor,
which use the timestamp in it's animations, get highly confused.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/staging/omapdrm/omap_crtc.c b/drivers/staging/omapdrm/omap_crtc.c
index 13e3c7f7d2b9..490a7f15604b 100644
--- a/drivers/staging/omapdrm/omap_crtc.c
+++ b/drivers/staging/omapdrm/omap_crtc.c
@@ -134,9 +134,19 @@ static void vblank_cb(void *arg)
 
         /* wakeup userspace */
         if (event) {
+                do_gettimeofday(&now);
+
                 spin_lock_irqsave(&dev->event_lock, flags);
+                /* TODO: we can't yet use the vblank time accounting,
+                 * because omapdss lower layer is the one that knows
+                 * the irq # and registers the handler, which more or
+                 * less defeats how drm_irq works.. for now just fake
+                 * the sequence number and use gettimeofday..
+                 *
                 event->event.sequence = drm_vblank_count_and_time(
                                 dev, omap_crtc->id, &now);
+                 */
+                event->event.sequence = sequence++;
                 event->event.tv_sec = now.tv_sec;
                 event->event.tv_usec = now.tv_usec;
                 list_add_tail(&event->base.link,