48 		if (!ac->ss || !ac->curr_bufs[0] || !ac->curr_bufs[1]) {  in tw686x_audio_irq()
77 		snd_pcm_period_elapsed(ac->ss);  in tw686x_audio_irq()
104 static int tw686x_pcm_open(struct snd_pcm_substream *ss)  in tw686x_pcm_open()  argument
106 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_open()
107 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_open()
108 	struct snd_pcm_runtime *rt = ss->runtime;  in tw686x_pcm_open()
111 	ac->ss = ss;  in tw686x_pcm_open()
121 static int tw686x_pcm_close(struct snd_pcm_substream *ss)  in tw686x_pcm_close()  argument
123 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_close()
124 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_close()
126 	ac->ss = NULL;  in tw686x_pcm_close()
130 static int tw686x_pcm_prepare(struct snd_pcm_substream *ss)  in tw686x_pcm_prepare()  argument
132 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_prepare()
133 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_prepare()
134 	struct snd_pcm_runtime *rt = ss->runtime;  in tw686x_pcm_prepare()
135 	unsigned int period_size = snd_pcm_lib_period_bytes(ss);  in tw686x_pcm_prepare()
211 static int tw686x_pcm_trigger(struct snd_pcm_substream *ss, int cmd)  in tw686x_pcm_trigger()  argument
213 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_trigger()
214 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_trigger()
250 static snd_pcm_uframes_t tw686x_pcm_pointer(struct snd_pcm_substream *ss)  in tw686x_pcm_pointer()  argument
252 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_pointer()
253 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_pointer()
255 	return bytes_to_frames(ss->runtime, ac->ptr);  in tw686x_pcm_pointer()
270 	struct snd_pcm_substream *ss;  in tw686x_snd_pcm_init()  local
283 	for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;  in tw686x_snd_pcm_init()
284 	     ss; ss = ss->next, i++)  in tw686x_snd_pcm_init()
285 		snprintf(ss->name, sizeof(ss->name), "vch%u audio", i);  in tw686x_snd_pcm_init()