235 static void dummy_systimer_rearm(struct dummy_systimer_pcm *dpcm)  in dummy_systimer_rearm()  argument
237 	mod_timer(&dpcm->timer, jiffies +  in dummy_systimer_rearm()
238 		DIV_ROUND_UP(dpcm->frac_period_rest, dpcm->rate));  in dummy_systimer_rearm()
241 static void dummy_systimer_update(struct dummy_systimer_pcm *dpcm)  in dummy_systimer_update()  argument
245 	delta = jiffies - dpcm->base_time;  in dummy_systimer_update()
248 	dpcm->base_time += delta;  in dummy_systimer_update()
249 	delta *= dpcm->rate;  in dummy_systimer_update()
250 	dpcm->frac_pos += delta;  in dummy_systimer_update()
251 	while (dpcm->frac_pos >= dpcm->frac_buffer_size)  in dummy_systimer_update()
252 		dpcm->frac_pos -= dpcm->frac_buffer_size;  in dummy_systimer_update()
253 	while (dpcm->frac_period_rest <= delta) {  in dummy_systimer_update()
254 		dpcm->elapsed++;  in dummy_systimer_update()
255 		dpcm->frac_period_rest += dpcm->frac_period_size;  in dummy_systimer_update()
257 	dpcm->frac_period_rest -= delta;  in dummy_systimer_update()
262 	struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;  in dummy_systimer_start()  local
263 	spin_lock(&dpcm->lock);  in dummy_systimer_start()
264 	dpcm->base_time = jiffies;  in dummy_systimer_start()
265 	dummy_systimer_rearm(dpcm);  in dummy_systimer_start()
266 	spin_unlock(&dpcm->lock);  in dummy_systimer_start()
272 	struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;  in dummy_systimer_stop()  local
273 	spin_lock(&dpcm->lock);  in dummy_systimer_stop()
274 	del_timer(&dpcm->timer);  in dummy_systimer_stop()
275 	spin_unlock(&dpcm->lock);  in dummy_systimer_stop()
282 	struct dummy_systimer_pcm *dpcm = runtime->private_data;  in dummy_systimer_prepare()  local
284 	dpcm->frac_pos = 0;  in dummy_systimer_prepare()
285 	dpcm->rate = runtime->rate;  in dummy_systimer_prepare()
286 	dpcm->frac_buffer_size = runtime->buffer_size * HZ;  in dummy_systimer_prepare()
287 	dpcm->frac_period_size = runtime->period_size * HZ;  in dummy_systimer_prepare()
288 	dpcm->frac_period_rest = dpcm->frac_period_size;  in dummy_systimer_prepare()
289 	dpcm->elapsed = 0;  in dummy_systimer_prepare()
296 	struct dummy_systimer_pcm *dpcm = from_timer(dpcm, t, timer);  in dummy_systimer_callback()  local
300 	spin_lock_irqsave(&dpcm->lock, flags);  in dummy_systimer_callback()
301 	dummy_systimer_update(dpcm);  in dummy_systimer_callback()
302 	dummy_systimer_rearm(dpcm);  in dummy_systimer_callback()
303 	elapsed = dpcm->elapsed;  in dummy_systimer_callback()
304 	dpcm->elapsed = 0;  in dummy_systimer_callback()
305 	spin_unlock_irqrestore(&dpcm->lock, flags);  in dummy_systimer_callback()
307 		snd_pcm_period_elapsed(dpcm->substream);  in dummy_systimer_callback()
313 	struct dummy_systimer_pcm *dpcm = substream->runtime->private_data;  in dummy_systimer_pointer()  local
316 	spin_lock(&dpcm->lock);  in dummy_systimer_pointer()
317 	dummy_systimer_update(dpcm);  in dummy_systimer_pointer()
318 	pos = dpcm->frac_pos / HZ;  in dummy_systimer_pointer()
319 	spin_unlock(&dpcm->lock);  in dummy_systimer_pointer()
325 	struct dummy_systimer_pcm *dpcm;  in dummy_systimer_create()  local
327 	dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);  in dummy_systimer_create()
328 	if (!dpcm)  in dummy_systimer_create()
330 	substream->runtime->private_data = dpcm;  in dummy_systimer_create()
331 	timer_setup(&dpcm->timer, dummy_systimer_callback, 0);  in dummy_systimer_create()
332 	spin_lock_init(&dpcm->lock);  in dummy_systimer_create()
333 	dpcm->substream = substream;  in dummy_systimer_create()
368 	struct dummy_hrtimer_pcm *dpcm;  in dummy_hrtimer_callback()  local
370 	dpcm = container_of(timer, struct dummy_hrtimer_pcm, timer);  in dummy_hrtimer_callback()
371 	if (!atomic_read(&dpcm->running))  in dummy_hrtimer_callback()
377 	snd_pcm_period_elapsed(dpcm->substream);  in dummy_hrtimer_callback()
378 	if (!atomic_read(&dpcm->running))  in dummy_hrtimer_callback()
381 	hrtimer_forward_now(timer, dpcm->period_time);  in dummy_hrtimer_callback()
387 	struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;  in dummy_hrtimer_start()  local
389 	dpcm->base_time = hrtimer_cb_get_time(&dpcm->timer);  in dummy_hrtimer_start()
390 	hrtimer_start(&dpcm->timer, dpcm->period_time, HRTIMER_MODE_REL_SOFT);  in dummy_hrtimer_start()
391 	atomic_set(&dpcm->running, 1);  in dummy_hrtimer_start()
397 	struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;  in dummy_hrtimer_stop()  local
399 	atomic_set(&dpcm->running, 0);  in dummy_hrtimer_stop()
400 	if (!hrtimer_callback_running(&dpcm->timer))  in dummy_hrtimer_stop()
401 		hrtimer_cancel(&dpcm->timer);  in dummy_hrtimer_stop()
405 static inline void dummy_hrtimer_sync(struct dummy_hrtimer_pcm *dpcm)  in dummy_hrtimer_sync()  argument
407 	hrtimer_cancel(&dpcm->timer);  in dummy_hrtimer_sync()
414 	struct dummy_hrtimer_pcm *dpcm = runtime->private_data;  in dummy_hrtimer_pointer()  local
418 	delta = ktime_us_delta(hrtimer_cb_get_time(&dpcm->timer),  in dummy_hrtimer_pointer()
419 			       dpcm->base_time);  in dummy_hrtimer_pointer()
428 	struct dummy_hrtimer_pcm *dpcm = runtime->private_data;  in dummy_hrtimer_prepare()  local
433 	dummy_hrtimer_sync(dpcm);  in dummy_hrtimer_prepare()
439 	dpcm->period_time = ktime_set(sec, nsecs);  in dummy_hrtimer_prepare()
446 	struct dummy_hrtimer_pcm *dpcm;  in dummy_hrtimer_create()  local
448 	dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);  in dummy_hrtimer_create()
449 	if (!dpcm)  in dummy_hrtimer_create()
451 	substream->runtime->private_data = dpcm;  in dummy_hrtimer_create()
452 	hrtimer_init(&dpcm->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT);  in dummy_hrtimer_create()
453 	dpcm->timer.function = dummy_hrtimer_callback;  in dummy_hrtimer_create()
454 	dpcm->substream = substream;  in dummy_hrtimer_create()
455 	atomic_set(&dpcm->running, 0);  in dummy_hrtimer_create()
461 	struct dummy_hrtimer_pcm *dpcm = substream->runtime->private_data;  in dummy_hrtimer_free()  local
462 	dummy_hrtimer_sync(dpcm);  in dummy_hrtimer_free()
463 	kfree(dpcm);  in dummy_hrtimer_free()