diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/interrupt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/interrupt.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/interrupt.c b/drivers/gpu/drm/i915/gvt/interrupt.c index d90c5f660b00..84d7174d0081 100644 --- a/drivers/gpu/drm/i915/gvt/interrupt.c +++ b/drivers/gpu/drm/i915/gvt/interrupt.c @@ -667,6 +667,21 @@ static void init_events( } } +static enum hrtimer_restart vblank_timer_fn(struct hrtimer *data) +{ + struct intel_gvt_vblank_timer *vblank_timer; + struct intel_gvt_irq *irq; + struct intel_gvt *gvt; + + vblank_timer = container_of(data, struct intel_gvt_vblank_timer, timer); + irq = container_of(vblank_timer, struct intel_gvt_irq, vblank_timer); + gvt = container_of(irq, struct intel_gvt, irq); + + intel_gvt_request_service(gvt, INTEL_GVT_REQUEST_EMULATE_VBLANK); + hrtimer_add_expires_ns(&vblank_timer->timer, vblank_timer->period); + return HRTIMER_RESTART; +} + /** * intel_gvt_clean_irq - clean up GVT-g IRQ emulation subsystem * @gvt: a GVT device @@ -677,8 +692,13 @@ static void init_events( */ void intel_gvt_clean_irq(struct intel_gvt *gvt) { + struct intel_gvt_irq *irq = &gvt->irq; + + hrtimer_cancel(&irq->vblank_timer.timer); } +#define VBLNAK_TIMER_PERIOD 16000000 + /** * intel_gvt_init_irq - initialize GVT-g IRQ emulation subsystem * @gvt: a GVT device @@ -692,6 +712,7 @@ void intel_gvt_clean_irq(struct intel_gvt *gvt) int intel_gvt_init_irq(struct intel_gvt *gvt) { struct intel_gvt_irq *irq = &gvt->irq; + struct intel_gvt_vblank_timer *vblank_timer = &irq->vblank_timer; gvt_dbg_core("init irq framework\n"); @@ -710,5 +731,10 @@ int intel_gvt_init_irq(struct intel_gvt *gvt) irq->ops->init_irq(irq); init_irq_map(irq); + + hrtimer_init(&vblank_timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + vblank_timer->timer.function = vblank_timer_fn; + vblank_timer->period = VBLNAK_TIMER_PERIOD; + return 0; } |
