2 * tascam-pcm.c - a part of driver for TASCAM FireWire series
4 * Copyright (c) 2015 Takashi Sakamoto
6 * Licensed under the terms of the GNU General Public License, version 2.
11 static int pcm_init_hw_params(struct snd_tscm *tscm,
12 struct snd_pcm_substream *substream)
14 struct snd_pcm_runtime *runtime = substream->runtime;
15 struct snd_pcm_hardware *hw = &runtime->hw;
16 struct amdtp_stream *stream;
17 unsigned int pcm_channels;
19 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
20 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
21 stream = &tscm->tx_stream;
22 pcm_channels = tscm->spec->pcm_capture_analog_channels;
24 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
25 stream = &tscm->rx_stream;
26 pcm_channels = tscm->spec->pcm_playback_analog_channels;
29 if (tscm->spec->has_adat)
31 if (tscm->spec->has_spdif)
33 runtime->hw.channels_min = runtime->hw.channels_max = pcm_channels;
35 hw->rates = SNDRV_PCM_RATE_44100 |
36 SNDRV_PCM_RATE_48000 |
37 SNDRV_PCM_RATE_88200 |
39 snd_pcm_limit_hw_rates(runtime);
41 return amdtp_tscm_add_pcm_hw_constraints(stream, runtime);
44 static int pcm_open(struct snd_pcm_substream *substream)
46 struct snd_tscm *tscm = substream->private_data;
47 enum snd_tscm_clock clock;
51 err = snd_tscm_stream_lock_try(tscm);
55 err = pcm_init_hw_params(tscm, substream);
59 err = snd_tscm_stream_get_clock(tscm, &clock);
60 if (clock != SND_TSCM_CLOCK_INTERNAL ||
61 amdtp_stream_pcm_running(&tscm->rx_stream) ||
62 amdtp_stream_pcm_running(&tscm->tx_stream)) {
63 err = snd_tscm_stream_get_rate(tscm, &rate);
66 substream->runtime->hw.rate_min = rate;
67 substream->runtime->hw.rate_max = rate;
70 snd_pcm_set_sync(substream);
74 snd_tscm_stream_lock_release(tscm);
78 static int pcm_close(struct snd_pcm_substream *substream)
80 struct snd_tscm *tscm = substream->private_data;
82 snd_tscm_stream_lock_release(tscm);
87 static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
88 struct snd_pcm_hw_params *hw_params)
90 struct snd_tscm *tscm = substream->private_data;
93 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
94 params_buffer_bytes(hw_params));
98 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
99 mutex_lock(&tscm->mutex);
100 tscm->substreams_counter++;
101 mutex_unlock(&tscm->mutex);
107 static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
108 struct snd_pcm_hw_params *hw_params)
110 struct snd_tscm *tscm = substream->private_data;
113 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
114 params_buffer_bytes(hw_params));
118 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
119 mutex_lock(&tscm->mutex);
120 tscm->substreams_counter++;
121 mutex_unlock(&tscm->mutex);
127 static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
129 struct snd_tscm *tscm = substream->private_data;
131 mutex_lock(&tscm->mutex);
133 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
134 tscm->substreams_counter--;
136 snd_tscm_stream_stop_duplex(tscm);
138 mutex_unlock(&tscm->mutex);
140 return snd_pcm_lib_free_vmalloc_buffer(substream);
143 static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
145 struct snd_tscm *tscm = substream->private_data;
147 mutex_lock(&tscm->mutex);
149 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
150 tscm->substreams_counter--;
152 snd_tscm_stream_stop_duplex(tscm);
154 mutex_unlock(&tscm->mutex);
156 return snd_pcm_lib_free_vmalloc_buffer(substream);
159 static int pcm_capture_prepare(struct snd_pcm_substream *substream)
161 struct snd_tscm *tscm = substream->private_data;
162 struct snd_pcm_runtime *runtime = substream->runtime;
165 mutex_lock(&tscm->mutex);
167 err = snd_tscm_stream_start_duplex(tscm, runtime->rate);
169 amdtp_stream_pcm_prepare(&tscm->tx_stream);
171 mutex_unlock(&tscm->mutex);
176 static int pcm_playback_prepare(struct snd_pcm_substream *substream)
178 struct snd_tscm *tscm = substream->private_data;
179 struct snd_pcm_runtime *runtime = substream->runtime;
182 mutex_lock(&tscm->mutex);
184 err = snd_tscm_stream_start_duplex(tscm, runtime->rate);
186 amdtp_stream_pcm_prepare(&tscm->rx_stream);
188 mutex_unlock(&tscm->mutex);
193 static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
195 struct snd_tscm *tscm = substream->private_data;
198 case SNDRV_PCM_TRIGGER_START:
199 amdtp_stream_pcm_trigger(&tscm->tx_stream, substream);
201 case SNDRV_PCM_TRIGGER_STOP:
202 amdtp_stream_pcm_trigger(&tscm->tx_stream, NULL);
211 static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
213 struct snd_tscm *tscm = substream->private_data;
216 case SNDRV_PCM_TRIGGER_START:
217 amdtp_stream_pcm_trigger(&tscm->rx_stream, substream);
219 case SNDRV_PCM_TRIGGER_STOP:
220 amdtp_stream_pcm_trigger(&tscm->rx_stream, NULL);
229 static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
231 struct snd_tscm *tscm = sbstrm->private_data;
233 return amdtp_stream_pcm_pointer(&tscm->tx_stream);
236 static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
238 struct snd_tscm *tscm = sbstrm->private_data;
240 return amdtp_stream_pcm_pointer(&tscm->rx_stream);
243 static int pcm_capture_ack(struct snd_pcm_substream *substream)
245 struct snd_tscm *tscm = substream->private_data;
247 return amdtp_stream_pcm_ack(&tscm->tx_stream);
250 static int pcm_playback_ack(struct snd_pcm_substream *substream)
252 struct snd_tscm *tscm = substream->private_data;
254 return amdtp_stream_pcm_ack(&tscm->rx_stream);
257 int snd_tscm_create_pcm_devices(struct snd_tscm *tscm)
259 static const struct snd_pcm_ops capture_ops = {
262 .ioctl = snd_pcm_lib_ioctl,
263 .hw_params = pcm_capture_hw_params,
264 .hw_free = pcm_capture_hw_free,
265 .prepare = pcm_capture_prepare,
266 .trigger = pcm_capture_trigger,
267 .pointer = pcm_capture_pointer,
268 .ack = pcm_capture_ack,
269 .page = snd_pcm_lib_get_vmalloc_page,
271 static const struct snd_pcm_ops playback_ops = {
274 .ioctl = snd_pcm_lib_ioctl,
275 .hw_params = pcm_playback_hw_params,
276 .hw_free = pcm_playback_hw_free,
277 .prepare = pcm_playback_prepare,
278 .trigger = pcm_playback_trigger,
279 .pointer = pcm_playback_pointer,
280 .ack = pcm_playback_ack,
281 .page = snd_pcm_lib_get_vmalloc_page,
286 err = snd_pcm_new(tscm->card, tscm->card->driver, 0, 1, 1, &pcm);
290 pcm->private_data = tscm;
291 snprintf(pcm->name, sizeof(pcm->name),
292 "%s PCM", tscm->card->shortname);
293 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
294 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);