1 // SPDX-License-Identifier: GPL-2.0-or-later
21 	unsigned long rate, mult, fsize, l, post;  in snd_pcm_timer_resolution_change()  local
22 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_pcm_timer_resolution_change()
25 	rate = runtime->rate;  in snd_pcm_timer_resolution_change()
31 	fsize = runtime->period_size;  in snd_pcm_timer_resolution_change()
37 	post = 1;  in snd_pcm_timer_resolution_change()
40 		post *= 2;  in snd_pcm_timer_resolution_change()
43 		pcm_err(substream->pcm,  in snd_pcm_timer_resolution_change()
45 			runtime->rate, runtime->period_size);  in snd_pcm_timer_resolution_change()
46 		runtime->timer_resolution = -1;  in snd_pcm_timer_resolution_change()
49 	runtime->timer_resolution = (mult * fsize / rate) * post;  in snd_pcm_timer_resolution_change()
56 	substream = timer->private_data;  in snd_pcm_timer_resolution()
57 	return substream->runtime ? substream->runtime->timer_resolution : 0;  in snd_pcm_timer_resolution()
65 	substream->timer_running = 1;  in snd_pcm_timer_start()
74 	substream->timer_running = 0;  in snd_pcm_timer_stop()
94 	struct snd_pcm_substream *substream = timer->private_data;  in snd_pcm_timer_free()
95 	substream->timer = NULL;  in snd_pcm_timer_free()
105 	tid.card = substream->pcm->card->number;  in snd_pcm_timer_init()
106 	tid.device = substream->pcm->device;  in snd_pcm_timer_init()
107 	tid.subdevice = (substream->number << 1) | (substream->stream & 1);  in snd_pcm_timer_init()
108 	if (snd_timer_new(substream->pcm->card, "PCM", &tid, &timer) < 0)  in snd_pcm_timer_init()
110 	sprintf(timer->name, "PCM %s %i-%i-%i",  in snd_pcm_timer_init()
111 			substream->stream == SNDRV_PCM_STREAM_CAPTURE ?  in snd_pcm_timer_init()
114 	timer->hw = snd_pcm_timer;  in snd_pcm_timer_init()
115 	if (snd_device_register(timer->card, timer) < 0) {  in snd_pcm_timer_init()
116 		snd_device_free(timer->card, timer);  in snd_pcm_timer_init()
119 	timer->private_data = substream;  in snd_pcm_timer_init()
120 	timer->private_free = snd_pcm_timer_free;  in snd_pcm_timer_init()
121 	substream->timer = timer;  in snd_pcm_timer_init()
126 	if (substream->timer) {  in snd_pcm_timer_done()
127 		snd_device_free(substream->pcm->card, substream->timer);  in snd_pcm_timer_done()
128 		substream->timer = NULL;  in snd_pcm_timer_done()