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9#include "tascam.h"
10
11static int pcm_init_hw_params(struct snd_tscm *tscm,
12 struct snd_pcm_substream *substream)
13{
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;
18
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;
23 } else {
24 runtime->hw.formats = SNDRV_PCM_FMTBIT_S32;
25 stream = &tscm->rx_stream;
26 pcm_channels = tscm->spec->pcm_playback_analog_channels;
27 }
28
29 if (tscm->spec->has_adat)
30 pcm_channels += 8;
31 if (tscm->spec->has_spdif)
32 pcm_channels += 2;
33 runtime->hw.channels_min = runtime->hw.channels_max = pcm_channels;
34
35 hw->rates = SNDRV_PCM_RATE_44100 |
36 SNDRV_PCM_RATE_48000 |
37 SNDRV_PCM_RATE_88200 |
38 SNDRV_PCM_RATE_96000;
39 snd_pcm_limit_hw_rates(runtime);
40
41 return amdtp_tscm_add_pcm_hw_constraints(stream, runtime);
42}
43
44static int pcm_open(struct snd_pcm_substream *substream)
45{
46 struct snd_tscm *tscm = substream->private_data;
47 enum snd_tscm_clock clock;
48 unsigned int rate;
49 int err;
50
51 err = snd_tscm_stream_lock_try(tscm);
52 if (err < 0)
53 goto end;
54
55 err = pcm_init_hw_params(tscm, substream);
56 if (err < 0)
57 goto err_locked;
58
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);
64 if (err < 0)
65 goto err_locked;
66 substream->runtime->hw.rate_min = rate;
67 substream->runtime->hw.rate_max = rate;
68 }
69
70 snd_pcm_set_sync(substream);
71end:
72 return err;
73err_locked:
74 snd_tscm_stream_lock_release(tscm);
75 return err;
76}
77
78static int pcm_close(struct snd_pcm_substream *substream)
79{
80 struct snd_tscm *tscm = substream->private_data;
81
82 snd_tscm_stream_lock_release(tscm);
83
84 return 0;
85}
86
87static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
88 struct snd_pcm_hw_params *hw_params)
89{
90 struct snd_tscm *tscm = substream->private_data;
91 int err;
92
93 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
94 params_buffer_bytes(hw_params));
95 if (err < 0)
96 return err;
97
98 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
99 mutex_lock(&tscm->mutex);
100 tscm->substreams_counter++;
101 mutex_unlock(&tscm->mutex);
102 }
103
104 return 0;
105}
106
107static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
108 struct snd_pcm_hw_params *hw_params)
109{
110 struct snd_tscm *tscm = substream->private_data;
111 int err;
112
113 err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
114 params_buffer_bytes(hw_params));
115 if (err < 0)
116 return err;
117
118 if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
119 mutex_lock(&tscm->mutex);
120 tscm->substreams_counter++;
121 mutex_unlock(&tscm->mutex);
122 }
123
124 return 0;
125}
126
127static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
128{
129 struct snd_tscm *tscm = substream->private_data;
130
131 mutex_lock(&tscm->mutex);
132
133 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
134 tscm->substreams_counter--;
135
136 snd_tscm_stream_stop_duplex(tscm);
137
138 mutex_unlock(&tscm->mutex);
139
140 return snd_pcm_lib_free_vmalloc_buffer(substream);
141}
142
143static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
144{
145 struct snd_tscm *tscm = substream->private_data;
146
147 mutex_lock(&tscm->mutex);
148
149 if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
150 tscm->substreams_counter--;
151
152 snd_tscm_stream_stop_duplex(tscm);
153
154 mutex_unlock(&tscm->mutex);
155
156 return snd_pcm_lib_free_vmalloc_buffer(substream);
157}
158
159static int pcm_capture_prepare(struct snd_pcm_substream *substream)
160{
161 struct snd_tscm *tscm = substream->private_data;
162 struct snd_pcm_runtime *runtime = substream->runtime;
163 int err;
164
165 mutex_lock(&tscm->mutex);
166
167 err = snd_tscm_stream_start_duplex(tscm, runtime->rate);
168 if (err >= 0)
169 amdtp_stream_pcm_prepare(&tscm->tx_stream);
170
171 mutex_unlock(&tscm->mutex);
172
173 return err;
174}
175
176static int pcm_playback_prepare(struct snd_pcm_substream *substream)
177{
178 struct snd_tscm *tscm = substream->private_data;
179 struct snd_pcm_runtime *runtime = substream->runtime;
180 int err;
181
182 mutex_lock(&tscm->mutex);
183
184 err = snd_tscm_stream_start_duplex(tscm, runtime->rate);
185 if (err >= 0)
186 amdtp_stream_pcm_prepare(&tscm->rx_stream);
187
188 mutex_unlock(&tscm->mutex);
189
190 return err;
191}
192
193static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
194{
195 struct snd_tscm *tscm = substream->private_data;
196
197 switch (cmd) {
198 case SNDRV_PCM_TRIGGER_START:
199 amdtp_stream_pcm_trigger(&tscm->tx_stream, substream);
200 break;
201 case SNDRV_PCM_TRIGGER_STOP:
202 amdtp_stream_pcm_trigger(&tscm->tx_stream, NULL);
203 break;
204 default:
205 return -EINVAL;
206 }
207
208 return 0;
209}
210
211static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
212{
213 struct snd_tscm *tscm = substream->private_data;
214
215 switch (cmd) {
216 case SNDRV_PCM_TRIGGER_START:
217 amdtp_stream_pcm_trigger(&tscm->rx_stream, substream);
218 break;
219 case SNDRV_PCM_TRIGGER_STOP:
220 amdtp_stream_pcm_trigger(&tscm->rx_stream, NULL);
221 break;
222 default:
223 return -EINVAL;
224 }
225
226 return 0;
227}
228
229static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm)
230{
231 struct snd_tscm *tscm = sbstrm->private_data;
232
233 return amdtp_stream_pcm_pointer(&tscm->tx_stream);
234}
235
236static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm)
237{
238 struct snd_tscm *tscm = sbstrm->private_data;
239
240 return amdtp_stream_pcm_pointer(&tscm->rx_stream);
241}
242
243static int pcm_capture_ack(struct snd_pcm_substream *substream)
244{
245 struct snd_tscm *tscm = substream->private_data;
246
247 return amdtp_stream_pcm_ack(&tscm->tx_stream);
248}
249
250static int pcm_playback_ack(struct snd_pcm_substream *substream)
251{
252 struct snd_tscm *tscm = substream->private_data;
253
254 return amdtp_stream_pcm_ack(&tscm->rx_stream);
255}
256
257int snd_tscm_create_pcm_devices(struct snd_tscm *tscm)
258{
259 static const struct snd_pcm_ops capture_ops = {
260 .open = pcm_open,
261 .close = pcm_close,
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,
270 };
271 static const struct snd_pcm_ops playback_ops = {
272 .open = pcm_open,
273 .close = pcm_close,
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,
282 .mmap = snd_pcm_lib_mmap_vmalloc,
283 };
284 struct snd_pcm *pcm;
285 int err;
286
287 err = snd_pcm_new(tscm->card, tscm->card->driver, 0, 1, 1, &pcm);
288 if (err < 0)
289 return err;
290
291 pcm->private_data = tscm;
292 snprintf(pcm->name, sizeof(pcm->name),
293 "%s PCM", tscm->card->shortname);
294 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
295 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
296
297 return 0;
298}
299
