250 static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm)  in dummy_systimer_rearm()  argument
252 	mod_timer(&dpcm->timer, jiffies +  in dummy_systimer_rearm()
253 		(dpcm->frac_period_rest + dpcm->rate - 1) / dpcm->rate);  in dummy_systimer_rearm()
256 static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm)  in dummy_systimer_update()  argument
260 	delta = jiffies - dpcm->base_time;  in dummy_systimer_update()
263 	dpcm->base_time += delta;  in dummy_systimer_update()
264 	delta *= dpcm->rate;  in dummy_systimer_update()
265 	dpcm->frac_pos += delta;  in dummy_systimer_update()
266 	while (dpcm->frac_pos >= dpcm->frac_buffer_size)  in dummy_systimer_update()
267 		dpcm->frac_pos -= dpcm->frac_buffer_size;  in dummy_systimer_update()
268 	while (dpcm->frac_period_rest <= delta) {  in dummy_systimer_update()
269 		dpcm->elapsed++;  in dummy_systimer_update()
270 		dpcm->frac_period_rest += dpcm->frac_period_size;  in dummy_systimer_update()
272 	dpcm->frac_period_rest -= delta;  in dummy_systimer_update()
277 	struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;  in dummy_systimer_start()  local
278 	spin_lock(&dpcm->lock);  in dummy_systimer_start()
279 	dpcm->base_time = jiffies;  in dummy_systimer_start()
280 	dummy_systimer_rearm(dpcm);  in dummy_systimer_start()
281 	spin_unlock(&dpcm->lock);  in dummy_systimer_start()
287 	struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;  in dummy_systimer_stop()  local
288 	spin_lock(&dpcm->lock);  in dummy_systimer_stop()
289 	del_timer(&dpcm->timer);  in dummy_systimer_stop()
290 	spin_unlock(&dpcm->lock);  in dummy_systimer_stop()
297 	struct dummy_systimer_pcm *dpcm = runtime->private_data;  in dummy_systimer_prepare()  local
299 	dpcm->frac_pos = 0;  in dummy_systimer_prepare()
300 	dpcm->rate = runtime->rate;  in dummy_systimer_prepare()
301 	dpcm->frac_buffer_size = runtime->buffer_size * HZ;  in dummy_systimer_prepare()
302 	dpcm->frac_period_size = runtime->period_size * HZ;  in dummy_systimer_prepare()
303 	dpcm->frac_period_rest = dpcm->frac_period_size;  in dummy_systimer_prepare()
304 	dpcm->elapsed = 0;  in dummy_systimer_prepare()
311 	struct dummy_systimer_pcm *dpcm = from_timer(dpcm, t, timer);  in dummy_systimer_callback()  local
315 	spin_lock_irqsave(&dpcm->lock, flags);  in dummy_systimer_callback()
316 	dummy_systimer_update(dpcm);  in dummy_systimer_callback()
317 	dummy_systimer_rearm(dpcm);  in dummy_systimer_callback()
318 	elapsed = dpcm->elapsed;  in dummy_systimer_callback()
319 	dpcm->elapsed = 0;  in dummy_systimer_callback()
320 	spin_unlock_irqrestore(&dpcm->lock, flags);  in dummy_systimer_callback()
322 		snd_pcm_period_elapsed(dpcm->substream);  in dummy_systimer_callback()
328 	struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;  in dummy_systimer_pointer()  local
331 	spin_lock(&dpcm->lock);  in dummy_systimer_pointer()
332 	dummy_systimer_update(dpcm);  in dummy_systimer_pointer()
333 	pos = dpcm->frac_pos / HZ;  in dummy_systimer_pointer()
334 	spin_unlock(&dpcm->lock);  in dummy_systimer_pointer()
340 	struct dummy_systimer_pcm *dpcm;  in dummy_systimer_create()  local
342 	dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);  in dummy_systimer_create()
343 	if (!dpcm)  in dummy_systimer_create()
345 	substream->runtime->private_data = dpcm;  in dummy_systimer_create()
346 	timer_setup(&dpcm->timer, dummy_systimer_callback, 0);  in dummy_systimer_create()
347 	spin_lock_init(&dpcm->lock);  in dummy_systimer_create()
348 	dpcm->substream = substream;  in dummy_systimer_create()
383 	struct dummy_hrtimer_pcm *dpcm;  in dummy_hrtimer_callback()  local
385 	dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer);  in dummy_hrtimer_callback()
386 	if (!atomic_read(&dpcm->running))  in dummy_hrtimer_callback()
392 	snd_pcm_period_elapsed(dpcm->substream);  in dummy_hrtimer_callback()
393 	if (!atomic_read(&dpcm->running))  in dummy_hrtimer_callback()
396 	hrtimer_forward_now(timer, dpcm->period_time);  in dummy_hrtimer_callback()
402 	struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;  in dummy_hrtimer_start()  local
404 	dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer);  in dummy_hrtimer_start()
405 	hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL_SOFT);  in dummy_hrtimer_start()
406 	atomic_set(&dpcm->running, 1);  in dummy_hrtimer_start()
412 	struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;  in dummy_hrtimer_stop()  local
414 	atomic_set(&dpcm->running, 0);  in dummy_hrtimer_stop()
415 	if (!hrtimer_callback_running(&dpcm->timer))  in dummy_hrtimer_stop()
416 		hrtimer_cancel(&dpcm->timer);  in dummy_hrtimer_stop()
420 static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm)  in dummy_hrtimer_sync()  argument
422 	hrtimer_cancel(&dpcm->timer);  in dummy_hrtimer_sync()
429 	struct dummy_hrtimer_pcm *dpcm = runtime->private_data;  in dummy_hrtimer_pointer()  local
433 	delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer),  in dummy_hrtimer_pointer()
434 			       dpcm->base_time);  in dummy_hrtimer_pointer()
443 	struct dummy_hrtimer_pcm *dpcm = runtime->private_data;  in dummy_hrtimer_prepare()  local
448 	dummy_hrtimer_sync(dpcm);  in dummy_hrtimer_prepare()
454 	dpcm->period_time = ktime_set(sec, nsecs);  in dummy_hrtimer_prepare()
461 	struct dummy_hrtimer_pcm *dpcm;  in dummy_hrtimer_create()  local
463 	dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);  in dummy_hrtimer_create()
464 	if (!dpcm)  in dummy_hrtimer_create()
466 	substream->runtime->private_data = dpcm;  in dummy_hrtimer_create()
467 	hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT);  in dummy_hrtimer_create()
468 	dpcm->timer.function = dummy_hrtimer_callback;  in dummy_hrtimer_create()
469 	dpcm->substream = substream;  in dummy_hrtimer_create()
470 	atomic_set(&dpcm->running, 0);  in dummy_hrtimer_create()
476 	struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;  in dummy_hrtimer_free()  local
477 	dummy_hrtimer_sync(dpcm);  in dummy_hrtimer_free()
478 	kfree(dpcm);  in dummy_hrtimer_free()