Commit | Line | Data |
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0120d0f1 TS |
1 | /* |
2 | * digi00x-pcm.c - a part of driver for Digidesign Digi 002/003 family | |
3 | * | |
4 | * Copyright (c) 2014-2015 Takashi Sakamoto | |
5 | * | |
6 | * Licensed under the terms of the GNU General Public License, version 2. | |
7 | */ | |
8 | ||
9 | #include "digi00x.h" | |
10 | ||
11 | static int hw_rule_rate(struct snd_pcm_hw_params *params, | |
12 | struct snd_pcm_hw_rule *rule) | |
13 | { | |
14 | struct snd_interval *r = | |
15 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
16 | const struct snd_interval *c = | |
17 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
18 | struct snd_interval t = { | |
19 | .min = UINT_MAX, .max = 0, .integer = 1, | |
20 | }; | |
21 | unsigned int i; | |
22 | ||
23 | for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { | |
24 | if (!snd_interval_test(c, | |
25 | snd_dg00x_stream_pcm_channels[i])) | |
26 | continue; | |
27 | ||
28 | t.min = min(t.min, snd_dg00x_stream_rates[i]); | |
29 | t.max = max(t.max, snd_dg00x_stream_rates[i]); | |
30 | } | |
31 | ||
32 | return snd_interval_refine(r, &t); | |
33 | } | |
34 | ||
35 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
36 | struct snd_pcm_hw_rule *rule) | |
37 | { | |
38 | struct snd_interval *c = | |
39 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
40 | const struct snd_interval *r = | |
41 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); | |
42 | struct snd_interval t = { | |
43 | .min = UINT_MAX, .max = 0, .integer = 1, | |
44 | }; | |
45 | unsigned int i; | |
46 | ||
47 | for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { | |
48 | if (!snd_interval_test(r, snd_dg00x_stream_rates[i])) | |
49 | continue; | |
50 | ||
51 | t.min = min(t.min, snd_dg00x_stream_pcm_channels[i]); | |
52 | t.max = max(t.max, snd_dg00x_stream_pcm_channels[i]); | |
53 | } | |
54 | ||
55 | return snd_interval_refine(c, &t); | |
56 | } | |
57 | ||
58 | static int pcm_init_hw_params(struct snd_dg00x *dg00x, | |
59 | struct snd_pcm_substream *substream) | |
60 | { | |
61 | static const struct snd_pcm_hardware hardware = { | |
62 | .info = SNDRV_PCM_INFO_BATCH | | |
63 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
64 | SNDRV_PCM_INFO_INTERLEAVED | | |
65 | SNDRV_PCM_INFO_JOINT_DUPLEX | | |
66 | SNDRV_PCM_INFO_MMAP | | |
67 | SNDRV_PCM_INFO_MMAP_VALID, | |
68 | .rates = SNDRV_PCM_RATE_44100 | | |
69 | SNDRV_PCM_RATE_48000 | | |
70 | SNDRV_PCM_RATE_88200 | | |
71 | SNDRV_PCM_RATE_96000, | |
72 | .rate_min = 44100, | |
73 | .rate_max = 96000, | |
74 | .channels_min = 10, | |
75 | .channels_max = 18, | |
76 | .period_bytes_min = 4 * 18, | |
77 | .period_bytes_max = 4 * 18 * 2048, | |
78 | .buffer_bytes_max = 4 * 18 * 2048 * 2, | |
79 | .periods_min = 2, | |
80 | .periods_max = UINT_MAX, | |
81 | }; | |
82 | struct amdtp_stream *s; | |
83 | int err; | |
84 | ||
85 | substream->runtime->hw = hardware; | |
86 | ||
87 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
88 | substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; | |
89 | s = &dg00x->tx_stream; | |
90 | } else { | |
91 | substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S16 | | |
92 | SNDRV_PCM_FMTBIT_S32; | |
93 | s = &dg00x->rx_stream; | |
94 | } | |
95 | ||
96 | err = snd_pcm_hw_rule_add(substream->runtime, 0, | |
97 | SNDRV_PCM_HW_PARAM_CHANNELS, | |
98 | hw_rule_channels, NULL, | |
99 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
100 | if (err < 0) | |
101 | return err; | |
102 | ||
103 | err = snd_pcm_hw_rule_add(substream->runtime, 0, | |
104 | SNDRV_PCM_HW_PARAM_RATE, | |
105 | hw_rule_rate, NULL, | |
106 | SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
107 | if (err < 0) | |
108 | return err; | |
109 | ||
110 | return amdtp_dot_add_pcm_hw_constraints(s, substream->runtime); | |
111 | } | |
112 | ||
113 | static int pcm_open(struct snd_pcm_substream *substream) | |
114 | { | |
115 | struct snd_dg00x *dg00x = substream->private_data; | |
116 | enum snd_dg00x_clock clock; | |
117 | bool detect; | |
118 | unsigned int rate; | |
119 | int err; | |
120 | ||
660dd3d5 TS |
121 | err = snd_dg00x_stream_lock_try(dg00x); |
122 | if (err < 0) | |
123 | goto end; | |
124 | ||
0120d0f1 TS |
125 | err = pcm_init_hw_params(dg00x, substream); |
126 | if (err < 0) | |
660dd3d5 | 127 | goto err_locked; |
0120d0f1 TS |
128 | |
129 | /* Check current clock source. */ | |
130 | err = snd_dg00x_stream_get_clock(dg00x, &clock); | |
131 | if (err < 0) | |
660dd3d5 | 132 | goto err_locked; |
0120d0f1 TS |
133 | if (clock != SND_DG00X_CLOCK_INTERNAL) { |
134 | err = snd_dg00x_stream_check_external_clock(dg00x, &detect); | |
135 | if (err < 0) | |
660dd3d5 | 136 | goto err_locked; |
0120d0f1 TS |
137 | if (!detect) { |
138 | err = -EBUSY; | |
660dd3d5 | 139 | goto err_locked; |
0120d0f1 TS |
140 | } |
141 | } | |
142 | ||
143 | if ((clock != SND_DG00X_CLOCK_INTERNAL) || | |
144 | amdtp_stream_pcm_running(&dg00x->rx_stream) || | |
145 | amdtp_stream_pcm_running(&dg00x->tx_stream)) { | |
146 | err = snd_dg00x_stream_get_external_rate(dg00x, &rate); | |
147 | if (err < 0) | |
660dd3d5 | 148 | goto err_locked; |
0120d0f1 TS |
149 | substream->runtime->hw.rate_min = rate; |
150 | substream->runtime->hw.rate_max = rate; | |
151 | } | |
152 | ||
153 | snd_pcm_set_sync(substream); | |
660dd3d5 TS |
154 | end: |
155 | return err; | |
156 | err_locked: | |
157 | snd_dg00x_stream_lock_release(dg00x); | |
0120d0f1 TS |
158 | return err; |
159 | } | |
160 | ||
161 | static int pcm_close(struct snd_pcm_substream *substream) | |
162 | { | |
660dd3d5 TS |
163 | struct snd_dg00x *dg00x = substream->private_data; |
164 | ||
165 | snd_dg00x_stream_lock_release(dg00x); | |
166 | ||
0120d0f1 TS |
167 | return 0; |
168 | } | |
169 | ||
170 | static int pcm_capture_hw_params(struct snd_pcm_substream *substream, | |
171 | struct snd_pcm_hw_params *hw_params) | |
172 | { | |
173 | struct snd_dg00x *dg00x = substream->private_data; | |
174 | int err; | |
175 | ||
176 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
177 | params_buffer_bytes(hw_params)); | |
178 | if (err < 0) | |
179 | return err; | |
180 | ||
181 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
182 | mutex_lock(&dg00x->mutex); | |
183 | dg00x->substreams_counter++; | |
184 | mutex_unlock(&dg00x->mutex); | |
185 | } | |
186 | ||
187 | amdtp_dot_set_pcm_format(&dg00x->tx_stream, params_format(hw_params)); | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
192 | static int pcm_playback_hw_params(struct snd_pcm_substream *substream, | |
193 | struct snd_pcm_hw_params *hw_params) | |
194 | { | |
195 | struct snd_dg00x *dg00x = substream->private_data; | |
196 | int err; | |
197 | ||
198 | err = snd_pcm_lib_alloc_vmalloc_buffer(substream, | |
199 | params_buffer_bytes(hw_params)); | |
200 | if (err < 0) | |
201 | return err; | |
202 | ||
203 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
204 | mutex_lock(&dg00x->mutex); | |
205 | dg00x->substreams_counter++; | |
206 | mutex_unlock(&dg00x->mutex); | |
207 | } | |
208 | ||
209 | amdtp_dot_set_pcm_format(&dg00x->rx_stream, params_format(hw_params)); | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
214 | static int pcm_capture_hw_free(struct snd_pcm_substream *substream) | |
215 | { | |
216 | struct snd_dg00x *dg00x = substream->private_data; | |
217 | ||
218 | mutex_lock(&dg00x->mutex); | |
219 | ||
220 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) | |
221 | dg00x->substreams_counter--; | |
222 | ||
223 | snd_dg00x_stream_stop_duplex(dg00x); | |
224 | ||
225 | mutex_unlock(&dg00x->mutex); | |
226 | ||
227 | return snd_pcm_lib_free_vmalloc_buffer(substream); | |
228 | } | |
229 | ||
230 | static int pcm_playback_hw_free(struct snd_pcm_substream *substream) | |
231 | { | |
232 | struct snd_dg00x *dg00x = substream->private_data; | |
233 | ||
234 | mutex_lock(&dg00x->mutex); | |
235 | ||
236 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) | |
237 | dg00x->substreams_counter--; | |
238 | ||
239 | snd_dg00x_stream_stop_duplex(dg00x); | |
240 | ||
241 | mutex_unlock(&dg00x->mutex); | |
242 | ||
243 | return snd_pcm_lib_free_vmalloc_buffer(substream); | |
244 | } | |
245 | ||
246 | static int pcm_capture_prepare(struct snd_pcm_substream *substream) | |
247 | { | |
248 | struct snd_dg00x *dg00x = substream->private_data; | |
249 | struct snd_pcm_runtime *runtime = substream->runtime; | |
250 | int err; | |
251 | ||
252 | mutex_lock(&dg00x->mutex); | |
253 | ||
254 | err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate); | |
255 | if (err >= 0) | |
256 | amdtp_stream_pcm_prepare(&dg00x->tx_stream); | |
257 | ||
258 | mutex_unlock(&dg00x->mutex); | |
259 | ||
260 | return err; | |
261 | } | |
262 | ||
263 | static int pcm_playback_prepare(struct snd_pcm_substream *substream) | |
264 | { | |
265 | struct snd_dg00x *dg00x = substream->private_data; | |
266 | struct snd_pcm_runtime *runtime = substream->runtime; | |
267 | int err; | |
268 | ||
269 | mutex_lock(&dg00x->mutex); | |
270 | ||
271 | err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate); | |
272 | if (err >= 0) { | |
273 | amdtp_stream_pcm_prepare(&dg00x->rx_stream); | |
274 | amdtp_dot_reset(&dg00x->rx_stream); | |
275 | } | |
276 | ||
277 | mutex_unlock(&dg00x->mutex); | |
278 | ||
279 | return err; | |
280 | } | |
281 | ||
282 | static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) | |
283 | { | |
284 | struct snd_dg00x *dg00x = substream->private_data; | |
285 | ||
286 | switch (cmd) { | |
287 | case SNDRV_PCM_TRIGGER_START: | |
288 | amdtp_stream_pcm_trigger(&dg00x->tx_stream, substream); | |
289 | break; | |
290 | case SNDRV_PCM_TRIGGER_STOP: | |
291 | amdtp_stream_pcm_trigger(&dg00x->tx_stream, NULL); | |
292 | break; | |
293 | default: | |
294 | return -EINVAL; | |
295 | } | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) | |
301 | { | |
302 | struct snd_dg00x *dg00x = substream->private_data; | |
303 | ||
304 | switch (cmd) { | |
305 | case SNDRV_PCM_TRIGGER_START: | |
306 | amdtp_stream_pcm_trigger(&dg00x->rx_stream, substream); | |
307 | break; | |
308 | case SNDRV_PCM_TRIGGER_STOP: | |
309 | amdtp_stream_pcm_trigger(&dg00x->rx_stream, NULL); | |
310 | break; | |
311 | default: | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) | |
319 | { | |
320 | struct snd_dg00x *dg00x = sbstrm->private_data; | |
321 | ||
322 | return amdtp_stream_pcm_pointer(&dg00x->tx_stream); | |
323 | } | |
324 | ||
325 | static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) | |
326 | { | |
327 | struct snd_dg00x *dg00x = sbstrm->private_data; | |
328 | ||
329 | return amdtp_stream_pcm_pointer(&dg00x->rx_stream); | |
330 | } | |
331 | ||
332 | static struct snd_pcm_ops pcm_capture_ops = { | |
333 | .open = pcm_open, | |
334 | .close = pcm_close, | |
335 | .ioctl = snd_pcm_lib_ioctl, | |
336 | .hw_params = pcm_capture_hw_params, | |
337 | .hw_free = pcm_capture_hw_free, | |
338 | .prepare = pcm_capture_prepare, | |
339 | .trigger = pcm_capture_trigger, | |
340 | .pointer = pcm_capture_pointer, | |
341 | .page = snd_pcm_lib_get_vmalloc_page, | |
342 | }; | |
343 | ||
344 | static struct snd_pcm_ops pcm_playback_ops = { | |
345 | .open = pcm_open, | |
346 | .close = pcm_close, | |
347 | .ioctl = snd_pcm_lib_ioctl, | |
348 | .hw_params = pcm_playback_hw_params, | |
349 | .hw_free = pcm_playback_hw_free, | |
350 | .prepare = pcm_playback_prepare, | |
351 | .trigger = pcm_playback_trigger, | |
352 | .pointer = pcm_playback_pointer, | |
353 | .page = snd_pcm_lib_get_vmalloc_page, | |
354 | .mmap = snd_pcm_lib_mmap_vmalloc, | |
355 | }; | |
356 | ||
357 | int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x) | |
358 | { | |
359 | struct snd_pcm *pcm; | |
360 | int err; | |
361 | ||
362 | err = snd_pcm_new(dg00x->card, dg00x->card->driver, 0, 1, 1, &pcm); | |
363 | if (err < 0) | |
364 | return err; | |
365 | ||
366 | pcm->private_data = dg00x; | |
367 | snprintf(pcm->name, sizeof(pcm->name), | |
368 | "%s PCM", dg00x->card->shortname); | |
369 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops); | |
370 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops); | |
371 | ||
372 | return 0; | |
373 | } |