51 		if (!ac->ss || !ac->curr_bufs[0] || !ac->curr_bufs[1]) {  in tw686x_audio_irq()
80 		snd_pcm_period_elapsed(ac->ss);  in tw686x_audio_irq()
84 static int tw686x_pcm_hw_params(struct snd_pcm_substream *ss,  in tw686x_pcm_hw_params()  argument
87 	return snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw_params));  in tw686x_pcm_hw_params()
90 static int tw686x_pcm_hw_free(struct snd_pcm_substream *ss)  in tw686x_pcm_hw_free()  argument
92 	return snd_pcm_lib_free_pages(ss);  in tw686x_pcm_hw_free()
118 static int tw686x_pcm_open(struct snd_pcm_substream *ss)  in tw686x_pcm_open()  argument
120 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_open()
121 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_open()
122 	struct snd_pcm_runtime *rt = ss->runtime;  in tw686x_pcm_open()
125 	ac->ss = ss;  in tw686x_pcm_open()
135 static int tw686x_pcm_close(struct snd_pcm_substream *ss)  in tw686x_pcm_close()  argument
137 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_close()
138 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_close()
140 	ac->ss = NULL;  in tw686x_pcm_close()
144 static int tw686x_pcm_prepare(struct snd_pcm_substream *ss)  in tw686x_pcm_prepare()  argument
146 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_prepare()
147 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_prepare()
148 	struct snd_pcm_runtime *rt = ss->runtime;  in tw686x_pcm_prepare()
149 	unsigned int period_size = snd_pcm_lib_period_bytes(ss);  in tw686x_pcm_prepare()
225 static int tw686x_pcm_trigger(struct snd_pcm_substream *ss, int cmd)  in tw686x_pcm_trigger()  argument
227 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_trigger()
228 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_trigger()
264 static snd_pcm_uframes_t tw686x_pcm_pointer(struct snd_pcm_substream *ss)  in tw686x_pcm_pointer()  argument
266 	struct tw686x_dev *dev = snd_pcm_substream_chip(ss);  in tw686x_pcm_pointer()
267 	struct tw686x_audio_channel *ac = &dev->audio_channels[ss->number];  in tw686x_pcm_pointer()
269 	return bytes_to_frames(ss->runtime, ac->ptr);  in tw686x_pcm_pointer()
287 	struct snd_pcm_substream *ss;  in tw686x_snd_pcm_init()  local
300 	for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;  in tw686x_snd_pcm_init()
301 	     ss; ss = ss->next, i++)  in tw686x_snd_pcm_init()
302 		snprintf(ss->name, sizeof(ss->name), "vch%u audio", i);  in tw686x_snd_pcm_init()