drivers/pcsp/pcsp_lib.c

32 		struct snd_pcm_substream *substream;
33 		substream = pcsp_chip.playback_substream;
34 		if (substream)
35 			snd_pcm_period_elapsed(substream);
48 	struct snd_pcm_substream *substream;
58 	substream = chip->playback_substream;
59 	if (!substream)
62 	runtime = substream->runtime;
90 	struct snd_pcm_substream *substream;
96 	substream = chip->playback_substream;
97 	if (!substream)
100 	period_bytes = snd_pcm_lib_period_bytes(substream);
101 	buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
200 static int snd_pcsp_playback_close(struct snd_pcm_substream *substream)
202 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
211 static int snd_pcsp_playback_hw_params(struct snd_pcm_substream *substream,
214 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
219 static int snd_pcsp_playback_hw_free(struct snd_pcm_substream *substream)
221 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
229 static int snd_pcsp_playback_prepare(struct snd_pcm_substream *substream)
231 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
236 		snd_pcm_format_physical_width(substream->runtime->format) >> 3;
237 	chip->is_signed = snd_pcm_format_signed(substream->runtime->format);
241 			snd_pcm_lib_buffer_bytes(substream),
242 			snd_pcm_lib_period_bytes(substream),
243 			snd_pcm_lib_buffer_bytes(substream) /
244 			snd_pcm_lib_period_bytes(substream),
245 			substream->runtime->periods,
251 static int snd_pcsp_trigger(struct snd_pcm_substream *substream, int cmd)
253 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
272 						   *substream)
274 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
279 	return bytes_to_frames(substream->runtime, pos);
304 static int snd_pcsp_playback_open(struct snd_pcm_substream *substream)
306 	struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
307 	struct snd_pcm_runtime *runtime = substream->runtime;
316 	chip->playback_substream = substream;