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[3/3] staging: drm/omap: use current time for page-flip event

Message ID 1331518282-6870-3-git-send-email-rob.clark@linaro.org
State Accepted
Commit 7411f9cfe67f5dd54333d2fe7e2a677c42666f99
Headers show

Commit Message

Rob Clark March 12, 2012, 2:11 a.m. UTC 
From: Rob Clark <rob@ti.com>

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>
---
 drivers/staging/omapdrm/omap_crtc.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
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Patch

diff --git a/drivers/staging/omapdrm/omap_crtc.c b/drivers/staging/omapdrm/omap_crtc.c
index 13e3c7f..490a7f1 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,