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flip_test: fixup zero timestamp for premature vblanks

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Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Imre Deak 2012-10-22 20:40:05 +03:00 committed by Daniel Vetter
parent 5fc312e9f1
commit 429dc01636
1 changed files with 25 additions and 0 deletions
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25
tests/flip_test.c
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@ -291,6 +291,30 @@ static void page_flip_handler(int fd, unsigned int frame, unsigned int sec,
event_handler(&o->flip_state, frame, sec, usec);
}
static void fixup_premature_vblank_ts(struct test_output *o,
struct event_state *es)
{
/*
* In case a power off event preempts the completion of a
* wait-for-vblank event the kernel will return a wf-vblank event with
* a zeroed-out timestamp. In order that check_state() doesn't
* complain replace this ts with a valid ts. As we can't calculate the
* exact timestamp, just use the time we received the event.
*/
struct timeval tv;
if (!(o->flags & (TEST_DPMS | TEST_MODESET)))
return;
if (o->vblank_state.current_ts.tv_sec != 0 ||
o->vblank_state.current_ts.tv_usec != 0)
return;
tv.tv_sec = 0;
tv.tv_usec = 1;
timersub(&es->current_received_ts, &tv, &es->current_ts);
}
static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
unsigned int usec, void *data)
{
@ -298,6 +322,7 @@ static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
clear_flag(&o->pending_events, EVENT_VBLANK);
event_handler(&o->vblank_state, frame, sec, usec);
fixup_premature_vblank_ts(o, &o->vblank_state);
}
static void check_state(struct test_output *o, struct event_state *es)