1 // SPDX-License-Identifier: GPL-2.0-only
3 * digi00x-pcm.c - a part of driver for Digidesign Digi 002/003 family
5 * Copyright (c) 2014-2015 Takashi Sakamoto
10 static int hw_rule_rate(struct snd_pcm_hw_params *params,
11 struct snd_pcm_hw_rule *rule)
13 struct snd_interval *r =
14 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
15 const struct snd_interval *c =
16 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
17 struct snd_interval t = {
18 .min = UINT_MAX, .max = 0, .integer = 1,
22 for (i = 0; i < SND_DG00X_RATE_COUNT; i++) {
23 if (!snd_interval_test(c,
24 snd_dg00x_stream_pcm_channels[i]))
27 t.min = min(t.min, snd_dg00x_stream_rates[i]);
28 t.max = max(t.max, snd_dg00x_stream_rates[i]);
31 return snd_interval_refine(r, &t);
34 static int hw_rule_channels(struct snd_pcm_hw_params *params,
35 struct snd_pcm_hw_rule *rule)
37 struct snd_interval *c =
38 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
39 const struct snd_interval *r =
40 hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
41 struct snd_interval t = {
42 .min = UINT_MAX, .max = 0, .integer = 1,
46 for (i = 0; i < SND_DG00X_RATE_COUNT; i++) {
47 if (!snd_interval_test(r, snd_dg00x_stream_rates[i]))
50 t.min = min(t.min, snd_dg00x_stream_pcm_channels[i]);
51 t.max = max(t.max, snd_dg00x_stream_pcm_channels[i]);
54 return snd_interval_refine(c, &t);
57 static int pcm_init_hw_params(struct snd_dg00x *dg00x,
58 struct snd_pcm_substream *substream)
60 struct snd_pcm_runtime *runtime = substream->runtime;
61 struct snd_pcm_hardware *hw = &runtime->hw;
62 struct amdtp_stream *s;
66 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
67 substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
68 s = &dg00x->tx_stream;
70 substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
71 s = &dg00x->rx_stream;
74 hw->channels_min = 10;
75 hw->channels_max = 18;
77 hw->rates = SNDRV_PCM_RATE_44100 |
78 SNDRV_PCM_RATE_48000 |
79 SNDRV_PCM_RATE_88200 |
81 snd_pcm_limit_hw_rates(runtime);
83 err = snd_pcm_hw_rule_add(substream->runtime, 0,
84 SNDRV_PCM_HW_PARAM_CHANNELS,
85 hw_rule_channels, NULL,
86 SNDRV_PCM_HW_PARAM_RATE, -1);
90 err = snd_pcm_hw_rule_add(substream->runtime, 0,
91 SNDRV_PCM_HW_PARAM_RATE,
93 SNDRV_PCM_HW_PARAM_CHANNELS, -1);
97 return amdtp_dot_add_pcm_hw_constraints(s, substream->runtime);
100 static int pcm_open(struct snd_pcm_substream *substream)
102 struct snd_dg00x *dg00x = substream->private_data;
103 enum snd_dg00x_clock clock;
108 err = snd_dg00x_stream_lock_try(dg00x);
112 err = pcm_init_hw_params(dg00x, substream);
116 /* Check current clock source. */
117 err = snd_dg00x_stream_get_clock(dg00x, &clock);
120 if (clock != SND_DG00X_CLOCK_INTERNAL) {
121 err = snd_dg00x_stream_check_external_clock(dg00x, &detect);
130 if ((clock != SND_DG00X_CLOCK_INTERNAL) ||
131 amdtp_stream_pcm_running(&dg00x->rx_stream) ||
132 amdtp_stream_pcm_running(&dg00x->tx_stream)) {
133 err = snd_dg00x_stream_get_external_rate(dg00x, &rate);
136 substream->runtime->hw.rate_min = rate;
137 substream->runtime->hw.rate_max = rate;
140 snd_pcm_set_sync(substream);
144 snd_dg00x_stream_lock_release(dg00x);
148 static int pcm_close(struct snd_pcm_substream *substream)
150 struct snd_dg00x *dg00x = substream->private_data;
152 snd_dg00x_stream_lock_release(dg00x);
157 static int pcm_hw_params(struct snd_pcm_substream *substream,
158 struct snd_pcm_hw_params *hw_params)
160 struct snd_dg00x *dg00x = substream->private_data;
163 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
164 params_buffer_bytes(hw_params));
168 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
169 unsigned int rate = params_rate(hw_params);
171 mutex_lock(&dg00x->mutex);
172 err = snd_dg00x_stream_reserve_duplex(dg00x, rate);
174 ++dg00x->substreams_counter;
175 mutex_unlock(&dg00x->mutex);
181 static int pcm_hw_free(struct snd_pcm_substream *substream)
183 struct snd_dg00x *dg00x = substream->private_data;
185 mutex_lock(&dg00x->mutex);
187 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
188 --dg00x->substreams_counter;
190 snd_dg00x_stream_stop_duplex(dg00x);
192 mutex_unlock(&dg00x->mutex);
194 return snd_pcm_lib_free_vmalloc_buffer(substream);
197 static int pcm_capture_prepare(struct snd_pcm_substream *substream)
199 struct snd_dg00x *dg00x = substream->private_data;
202 mutex_lock(&dg00x->mutex);
204 err = snd_dg00x_stream_start_duplex(dg00x);
206 amdtp_stream_pcm_prepare(&dg00x->tx_stream);
208 mutex_unlock(&dg00x->mutex);
213 static int pcm_playback_prepare(struct snd_pcm_substream *substream)
215 struct snd_dg00x *dg00x = substream->private_data;
218 mutex_lock(&dg00x->mutex);
220 err = snd_dg00x_stream_start_duplex(dg00x);
222 amdtp_stream_pcm_prepare(&dg00x->rx_stream);
223 amdtp_dot_reset(&dg00x->rx_stream);
226 mutex_unlock(&dg00x->mutex);
231 static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
233 struct snd_dg00x *dg00x = substream->private_data;
236 case SNDRV_PCM_TRIGGER_START:
237 amdtp_stream_pcm_trigger(&dg00x->tx_stream, substream);
239 case SNDRV_PCM_TRIGGER_STOP:
240 amdtp_stream_pcm_trigger(&dg00x->tx_stream, NULL);
249 static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
251 struct snd_dg00x *dg00x = substream->private_data;
254 case SNDRV_PCM_TRIGGER_START:
255 amdtp_stream_pcm_trigger(&dg00x->rx_stream, substream);
257 case SNDRV_PCM_TRIGGER_STOP:
258 amdtp_stream_pcm_trigger(&dg00x->rx_stream, NULL);
267 static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
269 struct snd_dg00x *dg00x = sbstrm->private_data;
271 return amdtp_stream_pcm_pointer(&dg00x->tx_stream);
274 static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
276 struct snd_dg00x *dg00x = sbstrm->private_data;
278 return amdtp_stream_pcm_pointer(&dg00x->rx_stream);
281 static int pcm_capture_ack(struct snd_pcm_substream *substream)
283 struct snd_dg00x *dg00x = substream->private_data;
285 return amdtp_stream_pcm_ack(&dg00x->tx_stream);
288 static int pcm_playback_ack(struct snd_pcm_substream *substream)
290 struct snd_dg00x *dg00x = substream->private_data;
292 return amdtp_stream_pcm_ack(&dg00x->rx_stream);
295 int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x)
297 static const struct snd_pcm_ops capture_ops = {
300 .ioctl = snd_pcm_lib_ioctl,
301 .hw_params = pcm_hw_params,
302 .hw_free = pcm_hw_free,
303 .prepare = pcm_capture_prepare,
304 .trigger = pcm_capture_trigger,
305 .pointer = pcm_capture_pointer,
306 .ack = pcm_capture_ack,
307 .page = snd_pcm_lib_get_vmalloc_page,
309 static const struct snd_pcm_ops playback_ops = {
312 .ioctl = snd_pcm_lib_ioctl,
313 .hw_params = pcm_hw_params,
314 .hw_free = pcm_hw_free,
315 .prepare = pcm_playback_prepare,
316 .trigger = pcm_playback_trigger,
317 .pointer = pcm_playback_pointer,
318 .ack = pcm_playback_ack,
319 .page = snd_pcm_lib_get_vmalloc_page,
324 err = snd_pcm_new(dg00x->card, dg00x->card->driver, 0, 1, 1, &pcm);
328 pcm->private_data = dg00x;
329 snprintf(pcm->name, sizeof(pcm->name),
330 "%s PCM", dg00x->card->shortname);
331 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
332 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);