/**
* hrtimer_forward - forward the timer expiry
* @timer: hrtimer to forward
* @now: forward past this time
* @interval: the interval to forward
*
* Forward the timer expiry so it will expire in the future.
* Returns the number of overruns.
*/
u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
{
u64 orun = 1;
ktime_t delta;
delta = ktime_sub(now, hrtimer_get_expires(timer));
if (delta.tv64 < 0)
return 0;
if (interval.tv64 < timer->base->resolution.tv64)
interval.tv64 = timer->base->resolution.tv64;
if (unlikely(delta.tv64 >= interval.tv64)) {
s64 incr = ktime_to_ns(interval);
orun = ktime_divns(delta, incr);
hrtimer_add_expires_ns(timer, incr * orun);
if (hrtimer_get_expires_tv64(timer) > now.tv64)
return orun;
/*
* This (and the ktime_add() below) is the
* correction for exact:
*/
orun++;
}
hrtimer_add_expires(timer, interval);
return orun;
}
static int __kvm_timer_fn(struct kvm_vcpu *vcpu, struct kvm_timer *ktimer)
{
int restart_timer = 0;
wait_queue_head_t *q = &vcpu->wq;
/*
* There is a race window between reading and incrementing, but we do
* not care about potentially loosing timer events in the !reinject
* case anyway. Note: KVM_REQ_PENDING_TIMER is implicitly checked
* in vcpu_enter_guest.
*/
if (ktimer->reinject || !atomic_read(&ktimer->pending)) {
atomic_inc(&ktimer->pending);
/* FIXME: this code should not know anything about vcpus */
kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
}
if (waitqueue_active(q))
wake_up_interruptible(q);
if (ktimer->t_ops->is_periodic(ktimer)) {
hrtimer_add_expires_ns(&ktimer->timer, ktimer->period);
restart_timer = 1;
}
return restart_timer;
}
/**
* hrtimer_forward - forward the timer expiry
* @timer: hrtimer to forward
* @now: forward past this time
* @interval: the interval to forward
*
* Forward the timer expiry so it will expire in the future.
* Returns the number of overruns.
*
* Can be safely called from the callback function of @timer. If
* called from other contexts @timer must neither be enqueued nor
* running the callback and the caller needs to take care of
* serialization.
*
* Note: This only updates the timer expiry value and does not requeue
* the timer.
*/
u64 hrtimer_forward(struct hrtimer *timer, ktime_t now, ktime_t interval)
{
u64 orun = 1;
ktime_t delta;
delta = ktime_sub(now, hrtimer_get_expires(timer));
if (delta < 0)
return 0;
if (WARN_ON(timer->state & HRTIMER_STATE_ENQUEUED))
return 0;
if (interval < hrtimer_resolution)
interval = hrtimer_resolution;
if (unlikely(delta >= interval)) {
s64 incr = ktime_to_ns(interval);
orun = ktime_divns(delta, incr);
hrtimer_add_expires_ns(timer, incr * orun);
if (hrtimer_get_expires_tv64(timer) > now)
return orun;
/*
* This (and the ktime_add() below) is the
* correction for exact:
*/
orun++;
}
hrtimer_add_expires(timer, interval);
return orun;
}
static enum hrtimer_restart dm_pcm_irq(struct hrtimer *handle)
{
int fifo, diff, per_size, buf_size;
static int last_ptr;
if (substream_loc->runtime && substream_loc->runtime->status &&
snd_pcm_running(substream_loc)) {
fifo = ops->get_fifo_status();
if (fifo >= (hw_fifo_size - 1))
ops->enable();
buf_size = substream_loc->runtime->buffer_size;
per_size = substream_loc->runtime->period_size;
for (; fifo < hw_fifo_size; fifo++) {
ops->write(local_buffer[pointer_sub++]);
pointer_sub %= buf_size;
if (ops->wait_fifo_ready)
ops->wait_fifo_ready();
}
if (last_ptr >= pointer_sub)
diff = buf_size + pointer_sub - last_ptr;
else
diff = pointer_sub - last_ptr;
if (diff >= per_size) {
snd_pcm_period_elapsed(substream_loc);
last_ptr += per_size;
if (last_ptr >= buf_size)
last_ptr -= buf_size;
}
} else
last_ptr = 0;
hrtimer_add_expires_ns(&hrtimer, ns_for_interrupt);
return HRTIMER_RESTART;
}
static enum hrtimer_restart lp5560_Callback(struct hrtimer *timer)
{
int delay,count,polarity;
int i=array_num;
if((i>=total_array) || (i>timeout))
return HRTIMER_NORESTART;
count = curr_data[i].count;
delay = curr_data[i].delay;
polarity = curr_data[i].polarity;
// printk("[JX] %s count=%d i=%d total_array=%d current_count=%d\n",__func__,count,i,total_array,current_count);
if(current_count>=count)
{
current_count=0;
if(i>=total_array)
return HRTIMER_NORESTART;
array_num++;
hrtimer_add_expires_ns(&g_timeOutTimer, delay*100000); // 100us
return HRTIMER_RESTART;
}
else
{
if(polarity==LOW_KEEP) {
lp5560_gpio_set(0);
}
else if(polarity==HIGH_KEEP){
lp5560_gpio_set(1);
}
else{
if(IsGPIOHigh)
{
lp5560_gpio_set(0);
}
else
{
lp5560_gpio_set(1);
}
}
current_count++;
hrtimer_add_expires_ns(&g_timeOutTimer, delay*100000); // 100us
return HRTIMER_RESTART;
}
}
enum hrtimer_restart kvm_timer_fn(struct hrtimer *data)
{
struct kvm_timer *ktimer = container_of(data, struct kvm_timer, timer);
struct kvm_vcpu *vcpu = ktimer->vcpu;
wait_queue_head_t *q = &vcpu->wq;
if (ktimer->reinject || !atomic_read(&ktimer->pending)) {
atomic_inc(&ktimer->pending);
kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
}
if (waitqueue_active(q))
wake_up_interruptible(q);
if (ktimer->t_ops->is_periodic(ktimer)) {
hrtimer_add_expires_ns(&ktimer->timer, ktimer->period);
return HRTIMER_RESTART;
} else
return HRTIMER_NORESTART;
}