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Commit | Line | Data |
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da607e19 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
4b316436 TS |
2 | /* |
3 | * ff-pcm.c - a part of driver for RME Fireface series | |
4 | * | |
5 | * Copyright (c) 2015-2017 Takashi Sakamoto | |
4b316436 TS |
6 | */ |
7 | ||
8 | #include "ff.h" | |
9 | ||
4b316436 TS |
10 | static int hw_rule_rate(struct snd_pcm_hw_params *params, |
11 | struct snd_pcm_hw_rule *rule) | |
12 | { | |
13 | const unsigned int *pcm_channels = rule->private; | |
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 | }; | |
76ea4688 | 21 | unsigned int i; |
4b316436 TS |
22 | |
23 | for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) { | |
76ea4688 TS |
24 | enum snd_ff_stream_mode mode; |
25 | int err; | |
26 | ||
27 | err = snd_ff_stream_get_multiplier_mode(i, &mode); | |
28 | if (err < 0) | |
29 | continue; | |
30 | ||
4b316436 TS |
31 | if (!snd_interval_test(c, pcm_channels[mode])) |
32 | continue; | |
33 | ||
34 | t.min = min(t.min, amdtp_rate_table[i]); | |
35 | t.max = max(t.max, amdtp_rate_table[i]); | |
36 | } | |
37 | ||
38 | return snd_interval_refine(r, &t); | |
39 | } | |
40 | ||
41 | static int hw_rule_channels(struct snd_pcm_hw_params *params, | |
42 | struct snd_pcm_hw_rule *rule) | |
43 | { | |
44 | const unsigned int *pcm_channels = rule->private; | |
45 | struct snd_interval *c = | |
46 | hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); | |
47 | const struct snd_interval *r = | |
48 | hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); | |
49 | struct snd_interval t = { | |
50 | .min = UINT_MAX, .max = 0, .integer = 1 | |
51 | }; | |
76ea4688 | 52 | unsigned int i; |
4b316436 TS |
53 | |
54 | for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) { | |
76ea4688 TS |
55 | enum snd_ff_stream_mode mode; |
56 | int err; | |
57 | ||
58 | err = snd_ff_stream_get_multiplier_mode(i, &mode); | |
59 | if (err < 0) | |
60 | continue; | |
61 | ||
4b316436 TS |
62 | if (!snd_interval_test(r, amdtp_rate_table[i])) |
63 | continue; | |
64 | ||
65 | t.min = min(t.min, pcm_channels[mode]); | |
66 | t.max = max(t.max, pcm_channels[mode]); | |
67 | } | |
68 | ||
69 | return snd_interval_refine(c, &t); | |
70 | } | |
71 | ||
72 | static void limit_channels_and_rates(struct snd_pcm_hardware *hw, | |
73 | const unsigned int *pcm_channels) | |
74 | { | |
4b316436 TS |
75 | unsigned int rate, channels; |
76 | int i; | |
77 | ||
78 | hw->channels_min = UINT_MAX; | |
79 | hw->channels_max = 0; | |
80 | hw->rate_min = UINT_MAX; | |
81 | hw->rate_max = 0; | |
82 | ||
83 | for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) { | |
76ea4688 TS |
84 | enum snd_ff_stream_mode mode; |
85 | int err; | |
86 | ||
87 | err = snd_ff_stream_get_multiplier_mode(i, &mode); | |
88 | if (err < 0) | |
89 | continue; | |
4b316436 TS |
90 | |
91 | channels = pcm_channels[mode]; | |
92 | if (pcm_channels[mode] == 0) | |
93 | continue; | |
94 | hw->channels_min = min(hw->channels_min, channels); | |
95 | hw->channels_max = max(hw->channels_max, channels); | |
96 | ||
97 | rate = amdtp_rate_table[i]; | |
98 | hw->rates |= snd_pcm_rate_to_rate_bit(rate); | |
99 | hw->rate_min = min(hw->rate_min, rate); | |
100 | hw->rate_max = max(hw->rate_max, rate); | |
101 | } | |
102 | } | |
103 | ||
4b316436 TS |
104 | static int pcm_init_hw_params(struct snd_ff *ff, |
105 | struct snd_pcm_substream *substream) | |
106 | { | |
107 | struct snd_pcm_runtime *runtime = substream->runtime; | |
108 | struct amdtp_stream *s; | |
109 | const unsigned int *pcm_channels; | |
110 | int err; | |
111 | ||
4b316436 TS |
112 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { |
113 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; | |
114 | s = &ff->tx_stream; | |
115 | pcm_channels = ff->spec->pcm_capture_channels; | |
116 | } else { | |
117 | runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; | |
118 | s = &ff->rx_stream; | |
119 | pcm_channels = ff->spec->pcm_playback_channels; | |
120 | } | |
121 | ||
4b316436 | 122 | limit_channels_and_rates(&runtime->hw, pcm_channels); |
4b316436 TS |
123 | |
124 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
125 | hw_rule_channels, (void *)pcm_channels, | |
126 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
127 | if (err < 0) | |
128 | return err; | |
129 | ||
130 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
131 | hw_rule_rate, (void *)pcm_channels, | |
132 | SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
133 | if (err < 0) | |
134 | return err; | |
135 | ||
136 | return amdtp_ff_add_pcm_hw_constraints(s, runtime); | |
137 | } | |
138 | ||
139 | static int pcm_open(struct snd_pcm_substream *substream) | |
140 | { | |
141 | struct snd_ff *ff = substream->private_data; | |
3aac3263 | 142 | struct amdtp_domain *d = &ff->domain; |
4b316436 TS |
143 | unsigned int rate; |
144 | enum snd_ff_clock_src src; | |
145 | int i, err; | |
146 | ||
f656edd5 | 147 | err = snd_ff_stream_lock_try(ff); |
4b316436 TS |
148 | if (err < 0) |
149 | return err; | |
150 | ||
f656edd5 | 151 | err = pcm_init_hw_params(ff, substream); |
af43173c ME |
152 | if (err < 0) |
153 | goto release_lock; | |
f656edd5 | 154 | |
b1d0cb0a | 155 | err = ff->spec->protocol->get_clock(ff, &rate, &src); |
af43173c ME |
156 | if (err < 0) |
157 | goto release_lock; | |
4b316436 | 158 | |
3aac3263 TS |
159 | mutex_lock(&ff->mutex); |
160 | ||
161 | // When source of clock is not internal or any stream is reserved for | |
162 | // transmission of PCM frames, the available sampling rate is limited | |
163 | // at current one. | |
4b316436 TS |
164 | if (src != SND_FF_CLOCK_SRC_INTERNAL) { |
165 | for (i = 0; i < CIP_SFC_COUNT; ++i) { | |
166 | if (amdtp_rate_table[i] == rate) | |
167 | break; | |
168 | } | |
3aac3263 TS |
169 | |
170 | // The unit is configured at sampling frequency which packet | |
171 | // streaming engine can't support. | |
f656edd5 | 172 | if (i >= CIP_SFC_COUNT) { |
3aac3263 | 173 | mutex_unlock(&ff->mutex); |
af43173c ME |
174 | err = -EIO; |
175 | goto release_lock; | |
f656edd5 | 176 | } |
4b316436 TS |
177 | |
178 | substream->runtime->hw.rate_min = rate; | |
179 | substream->runtime->hw.rate_max = rate; | |
180 | } else { | |
3aac3263 TS |
181 | if (ff->substreams_counter > 0) { |
182 | unsigned int frames_per_period = d->events_per_period; | |
4de3eb06 | 183 | unsigned int frames_per_buffer = d->events_per_buffer; |
3aac3263 | 184 | |
4b316436 TS |
185 | rate = amdtp_rate_table[ff->rx_stream.sfc]; |
186 | substream->runtime->hw.rate_min = rate; | |
187 | substream->runtime->hw.rate_max = rate; | |
3aac3263 TS |
188 | |
189 | err = snd_pcm_hw_constraint_minmax(substream->runtime, | |
190 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
191 | frames_per_period, frames_per_period); | |
192 | if (err < 0) { | |
193 | mutex_unlock(&ff->mutex); | |
194 | goto release_lock; | |
195 | } | |
4de3eb06 TS |
196 | |
197 | err = snd_pcm_hw_constraint_minmax(substream->runtime, | |
198 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
199 | frames_per_buffer, frames_per_buffer); | |
200 | if (err < 0) { | |
201 | mutex_unlock(&ff->mutex); | |
202 | goto release_lock; | |
203 | } | |
4b316436 TS |
204 | } |
205 | } | |
206 | ||
3aac3263 TS |
207 | mutex_unlock(&ff->mutex); |
208 | ||
4b316436 TS |
209 | snd_pcm_set_sync(substream); |
210 | ||
211 | return 0; | |
af43173c ME |
212 | |
213 | release_lock: | |
214 | snd_ff_stream_lock_release(ff); | |
215 | return err; | |
4b316436 TS |
216 | } |
217 | ||
218 | static int pcm_close(struct snd_pcm_substream *substream) | |
219 | { | |
f656edd5 TS |
220 | struct snd_ff *ff = substream->private_data; |
221 | ||
222 | snd_ff_stream_lock_release(ff); | |
223 | ||
4b316436 TS |
224 | return 0; |
225 | } | |
226 | ||
49f621fe TS |
227 | static int pcm_hw_params(struct snd_pcm_substream *substream, |
228 | struct snd_pcm_hw_params *hw_params) | |
4b316436 TS |
229 | { |
230 | struct snd_ff *ff = substream->private_data; | |
231 | int err; | |
232 | ||
a3f4f2d5 | 233 | err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); |
4b316436 TS |
234 | if (err < 0) |
235 | return err; | |
236 | ||
237 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
55162d2b | 238 | unsigned int rate = params_rate(hw_params); |
9d9ff58c | 239 | unsigned int frames_per_period = params_period_size(hw_params); |
4de3eb06 | 240 | unsigned int frames_per_buffer = params_buffer_size(hw_params); |
55162d2b | 241 | |
4b316436 | 242 | mutex_lock(&ff->mutex); |
4de3eb06 TS |
243 | err = snd_ff_stream_reserve_duplex(ff, rate, frames_per_period, |
244 | frames_per_buffer); | |
55162d2b TS |
245 | if (err >= 0) |
246 | ++ff->substreams_counter; | |
4b316436 TS |
247 | mutex_unlock(&ff->mutex); |
248 | } | |
249 | ||
48013634 | 250 | return err; |
4b316436 TS |
251 | } |
252 | ||
49f621fe | 253 | static int pcm_hw_free(struct snd_pcm_substream *substream) |
4b316436 TS |
254 | { |
255 | struct snd_ff *ff = substream->private_data; | |
256 | ||
257 | mutex_lock(&ff->mutex); | |
258 | ||
259 | if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) | |
55162d2b | 260 | --ff->substreams_counter; |
4b316436 TS |
261 | |
262 | snd_ff_stream_stop_duplex(ff); | |
263 | ||
264 | mutex_unlock(&ff->mutex); | |
265 | ||
a3f4f2d5 | 266 | return snd_pcm_lib_free_pages(substream); |
4b316436 TS |
267 | } |
268 | ||
269 | static int pcm_capture_prepare(struct snd_pcm_substream *substream) | |
270 | { | |
271 | struct snd_ff *ff = substream->private_data; | |
272 | struct snd_pcm_runtime *runtime = substream->runtime; | |
273 | int err; | |
274 | ||
275 | mutex_lock(&ff->mutex); | |
276 | ||
277 | err = snd_ff_stream_start_duplex(ff, runtime->rate); | |
278 | if (err >= 0) | |
279 | amdtp_stream_pcm_prepare(&ff->tx_stream); | |
280 | ||
281 | mutex_unlock(&ff->mutex); | |
282 | ||
283 | return err; | |
284 | } | |
285 | ||
286 | static int pcm_playback_prepare(struct snd_pcm_substream *substream) | |
287 | { | |
288 | struct snd_ff *ff = substream->private_data; | |
289 | struct snd_pcm_runtime *runtime = substream->runtime; | |
290 | int err; | |
291 | ||
292 | mutex_lock(&ff->mutex); | |
293 | ||
294 | err = snd_ff_stream_start_duplex(ff, runtime->rate); | |
295 | if (err >= 0) | |
296 | amdtp_stream_pcm_prepare(&ff->rx_stream); | |
297 | ||
298 | mutex_unlock(&ff->mutex); | |
299 | ||
300 | return err; | |
301 | } | |
302 | ||
303 | static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) | |
304 | { | |
305 | struct snd_ff *ff = substream->private_data; | |
306 | ||
307 | switch (cmd) { | |
308 | case SNDRV_PCM_TRIGGER_START: | |
309 | amdtp_stream_pcm_trigger(&ff->tx_stream, substream); | |
310 | break; | |
311 | case SNDRV_PCM_TRIGGER_STOP: | |
312 | amdtp_stream_pcm_trigger(&ff->tx_stream, NULL); | |
313 | break; | |
314 | default: | |
315 | return -EINVAL; | |
316 | } | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) | |
322 | { | |
323 | struct snd_ff *ff = substream->private_data; | |
324 | ||
325 | switch (cmd) { | |
326 | case SNDRV_PCM_TRIGGER_START: | |
327 | amdtp_stream_pcm_trigger(&ff->rx_stream, substream); | |
328 | break; | |
329 | case SNDRV_PCM_TRIGGER_STOP: | |
330 | amdtp_stream_pcm_trigger(&ff->rx_stream, NULL); | |
331 | break; | |
332 | default: | |
333 | return -EINVAL; | |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) | |
340 | { | |
341 | struct snd_ff *ff = sbstrm->private_data; | |
342 | ||
f890f9a0 | 343 | return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->tx_stream); |
4b316436 TS |
344 | } |
345 | ||
346 | static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) | |
347 | { | |
348 | struct snd_ff *ff = sbstrm->private_data; | |
349 | ||
f890f9a0 | 350 | return amdtp_domain_stream_pcm_pointer(&ff->domain, &ff->rx_stream); |
4b316436 TS |
351 | } |
352 | ||
875becf8 TS |
353 | static int pcm_capture_ack(struct snd_pcm_substream *substream) |
354 | { | |
355 | struct snd_ff *ff = substream->private_data; | |
356 | ||
e6dcc92f | 357 | return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->tx_stream); |
875becf8 TS |
358 | } |
359 | ||
360 | static int pcm_playback_ack(struct snd_pcm_substream *substream) | |
361 | { | |
362 | struct snd_ff *ff = substream->private_data; | |
363 | ||
e6dcc92f | 364 | return amdtp_domain_stream_pcm_ack(&ff->domain, &ff->rx_stream); |
875becf8 TS |
365 | } |
366 | ||
4b316436 TS |
367 | int snd_ff_create_pcm_devices(struct snd_ff *ff) |
368 | { | |
d2dc2a96 TS |
369 | static const struct snd_pcm_ops pcm_capture_ops = { |
370 | .open = pcm_open, | |
371 | .close = pcm_close, | |
372 | .ioctl = snd_pcm_lib_ioctl, | |
49f621fe TS |
373 | .hw_params = pcm_hw_params, |
374 | .hw_free = pcm_hw_free, | |
d2dc2a96 TS |
375 | .prepare = pcm_capture_prepare, |
376 | .trigger = pcm_capture_trigger, | |
377 | .pointer = pcm_capture_pointer, | |
378 | .ack = pcm_capture_ack, | |
d2dc2a96 TS |
379 | }; |
380 | static const struct snd_pcm_ops pcm_playback_ops = { | |
381 | .open = pcm_open, | |
382 | .close = pcm_close, | |
383 | .ioctl = snd_pcm_lib_ioctl, | |
49f621fe TS |
384 | .hw_params = pcm_hw_params, |
385 | .hw_free = pcm_hw_free, | |
d2dc2a96 TS |
386 | .prepare = pcm_playback_prepare, |
387 | .trigger = pcm_playback_trigger, | |
388 | .pointer = pcm_playback_pointer, | |
389 | .ack = pcm_playback_ack, | |
d2dc2a96 | 390 | }; |
4b316436 TS |
391 | struct snd_pcm *pcm; |
392 | int err; | |
393 | ||
394 | err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm); | |
395 | if (err < 0) | |
396 | return err; | |
397 | ||
398 | pcm->private_data = ff; | |
399 | snprintf(pcm->name, sizeof(pcm->name), | |
400 | "%s PCM", ff->card->shortname); | |
401 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops); | |
402 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops); | |
a3f4f2d5 TI |
403 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC, |
404 | NULL, 0, 0); | |
4b316436 TS |
405 | |
406 | return 0; | |
407 | } |