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8cc72361 WYC |
1 | /** |
2 | * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. | |
3 | * | |
4 | * This source file is released under GPL v2 license (no other versions). | |
5 | * See the COPYING file included in the main directory of this source | |
6 | * distribution for the license terms and conditions. | |
7 | * | |
8 | * @File ctpcm.c | |
9 | * | |
10 | * @Brief | |
11 | * This file contains the definition of the pcm device functions. | |
12 | * | |
13 | * @Author Liu Chun | |
14 | * @Date Apr 2 2008 | |
15 | * | |
16 | */ | |
17 | ||
18 | #include "ctpcm.h" | |
b7bbf876 | 19 | #include "cttimer.h" |
5a0e3ad6 | 20 | #include <linux/slab.h> |
8cc72361 WYC |
21 | #include <sound/pcm.h> |
22 | ||
23 | /* Hardware descriptions for playback */ | |
24 | static struct snd_pcm_hardware ct_pcm_playback_hw = { | |
25 | .info = (SNDRV_PCM_INFO_MMAP | | |
26 | SNDRV_PCM_INFO_INTERLEAVED | | |
27 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
28 | SNDRV_PCM_INFO_MMAP_VALID | | |
29 | SNDRV_PCM_INFO_PAUSE), | |
30 | .formats = (SNDRV_PCM_FMTBIT_U8 | | |
8cc72361 | 31 | SNDRV_PCM_FMTBIT_S16_LE | |
8cc72361 | 32 | SNDRV_PCM_FMTBIT_S24_3LE | |
d2b9b96c TI |
33 | SNDRV_PCM_FMTBIT_S32_LE | |
34 | SNDRV_PCM_FMTBIT_FLOAT_LE), | |
8cc72361 WYC |
35 | .rates = (SNDRV_PCM_RATE_CONTINUOUS | |
36 | SNDRV_PCM_RATE_8000_192000), | |
37 | .rate_min = 8000, | |
38 | .rate_max = 192000, | |
39 | .channels_min = 1, | |
40 | .channels_max = 2, | |
41 | .buffer_bytes_max = (128*1024), | |
42 | .period_bytes_min = (64), | |
43 | .period_bytes_max = (128*1024), | |
775ffa1d | 44 | .periods_min = 2, |
8cc72361 WYC |
45 | .periods_max = 1024, |
46 | .fifo_size = 0, | |
47 | }; | |
48 | ||
49 | static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = { | |
50 | .info = (SNDRV_PCM_INFO_MMAP | | |
51 | SNDRV_PCM_INFO_INTERLEAVED | | |
52 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
53 | SNDRV_PCM_INFO_MMAP_VALID | | |
54 | SNDRV_PCM_INFO_PAUSE), | |
d2b9b96c | 55 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
8cc72361 WYC |
56 | .rates = (SNDRV_PCM_RATE_48000 | |
57 | SNDRV_PCM_RATE_44100 | | |
58 | SNDRV_PCM_RATE_32000), | |
59 | .rate_min = 32000, | |
60 | .rate_max = 48000, | |
61 | .channels_min = 2, | |
62 | .channels_max = 2, | |
63 | .buffer_bytes_max = (128*1024), | |
64 | .period_bytes_min = (64), | |
65 | .period_bytes_max = (128*1024), | |
775ffa1d | 66 | .periods_min = 2, |
8cc72361 WYC |
67 | .periods_max = 1024, |
68 | .fifo_size = 0, | |
69 | }; | |
70 | ||
71 | /* Hardware descriptions for capture */ | |
72 | static struct snd_pcm_hardware ct_pcm_capture_hw = { | |
73 | .info = (SNDRV_PCM_INFO_MMAP | | |
74 | SNDRV_PCM_INFO_INTERLEAVED | | |
75 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
76 | SNDRV_PCM_INFO_PAUSE | | |
77 | SNDRV_PCM_INFO_MMAP_VALID), | |
78 | .formats = (SNDRV_PCM_FMTBIT_U8 | | |
8cc72361 | 79 | SNDRV_PCM_FMTBIT_S16_LE | |
8cc72361 | 80 | SNDRV_PCM_FMTBIT_S24_3LE | |
d2b9b96c TI |
81 | SNDRV_PCM_FMTBIT_S32_LE | |
82 | SNDRV_PCM_FMTBIT_FLOAT_LE), | |
8cc72361 WYC |
83 | .rates = (SNDRV_PCM_RATE_CONTINUOUS | |
84 | SNDRV_PCM_RATE_8000_96000), | |
85 | .rate_min = 8000, | |
86 | .rate_max = 96000, | |
87 | .channels_min = 1, | |
88 | .channels_max = 2, | |
89 | .buffer_bytes_max = (128*1024), | |
90 | .period_bytes_min = (384), | |
91 | .period_bytes_max = (64*1024), | |
92 | .periods_min = 2, | |
93 | .periods_max = 1024, | |
94 | .fifo_size = 0, | |
95 | }; | |
96 | ||
97 | static void ct_atc_pcm_interrupt(struct ct_atc_pcm *atc_pcm) | |
98 | { | |
99 | struct ct_atc_pcm *apcm = atc_pcm; | |
100 | ||
35ebf6e7 | 101 | if (!apcm->substream) |
8cc72361 WYC |
102 | return; |
103 | ||
104 | snd_pcm_period_elapsed(apcm->substream); | |
105 | } | |
106 | ||
107 | static void ct_atc_pcm_free_substream(struct snd_pcm_runtime *runtime) | |
108 | { | |
109 | struct ct_atc_pcm *apcm = runtime->private_data; | |
110 | struct ct_atc *atc = snd_pcm_substream_chip(apcm->substream); | |
111 | ||
112 | atc->pcm_release_resources(atc, apcm); | |
b7bbf876 | 113 | ct_timer_instance_free(apcm->timer); |
8cc72361 WYC |
114 | kfree(apcm); |
115 | runtime->private_data = NULL; | |
116 | } | |
117 | ||
118 | /* pcm playback operations */ | |
119 | static int ct_pcm_playback_open(struct snd_pcm_substream *substream) | |
120 | { | |
121 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
122 | struct snd_pcm_runtime *runtime = substream->runtime; | |
123 | struct ct_atc_pcm *apcm; | |
124 | int err; | |
125 | ||
126 | apcm = kzalloc(sizeof(*apcm), GFP_KERNEL); | |
35ebf6e7 | 127 | if (!apcm) |
8cc72361 WYC |
128 | return -ENOMEM; |
129 | ||
8cc72361 WYC |
130 | apcm->substream = substream; |
131 | apcm->interrupt = ct_atc_pcm_interrupt; | |
8cc72361 WYC |
132 | if (IEC958 == substream->pcm->device) { |
133 | runtime->hw = ct_spdif_passthru_playback_hw; | |
134 | atc->spdif_out_passthru(atc, 1); | |
135 | } else { | |
136 | runtime->hw = ct_pcm_playback_hw; | |
137 | if (FRONT == substream->pcm->device) | |
138 | runtime->hw.channels_max = 8; | |
139 | } | |
140 | ||
141 | err = snd_pcm_hw_constraint_integer(runtime, | |
142 | SNDRV_PCM_HW_PARAM_PERIODS); | |
143 | if (err < 0) { | |
144 | kfree(apcm); | |
145 | return err; | |
146 | } | |
147 | err = snd_pcm_hw_constraint_minmax(runtime, | |
148 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
149 | 1024, UINT_MAX); | |
150 | if (err < 0) { | |
151 | kfree(apcm); | |
152 | return err; | |
153 | } | |
154 | ||
b7bbf876 | 155 | apcm->timer = ct_timer_instance_new(atc->timer, apcm); |
fa2b30af JL |
156 | if (!apcm->timer) { |
157 | kfree(apcm); | |
b7bbf876 | 158 | return -ENOMEM; |
fa2b30af JL |
159 | } |
160 | runtime->private_data = apcm; | |
161 | runtime->private_free = ct_atc_pcm_free_substream; | |
b7bbf876 | 162 | |
8cc72361 WYC |
163 | return 0; |
164 | } | |
165 | ||
166 | static int ct_pcm_playback_close(struct snd_pcm_substream *substream) | |
167 | { | |
168 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
169 | ||
170 | /* TODO: Notify mixer inactive. */ | |
171 | if (IEC958 == substream->pcm->device) | |
172 | atc->spdif_out_passthru(atc, 0); | |
173 | ||
174 | /* The ct_atc_pcm object will be freed by runtime->private_free */ | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | static int ct_pcm_hw_params(struct snd_pcm_substream *substream, | |
180 | struct snd_pcm_hw_params *hw_params) | |
181 | { | |
a5990dc5 TI |
182 | struct ct_atc *atc = snd_pcm_substream_chip(substream); |
183 | struct ct_atc_pcm *apcm = substream->runtime->private_data; | |
184 | int err; | |
185 | ||
186 | err = snd_pcm_lib_malloc_pages(substream, | |
8cc72361 | 187 | params_buffer_bytes(hw_params)); |
a5990dc5 TI |
188 | if (err < 0) |
189 | return err; | |
190 | /* clear previous resources */ | |
191 | atc->pcm_release_resources(atc, apcm); | |
192 | return err; | |
8cc72361 WYC |
193 | } |
194 | ||
195 | static int ct_pcm_hw_free(struct snd_pcm_substream *substream) | |
196 | { | |
a5990dc5 TI |
197 | struct ct_atc *atc = snd_pcm_substream_chip(substream); |
198 | struct ct_atc_pcm *apcm = substream->runtime->private_data; | |
199 | ||
200 | /* clear previous resources */ | |
201 | atc->pcm_release_resources(atc, apcm); | |
8cc72361 WYC |
202 | /* Free snd-allocated pages */ |
203 | return snd_pcm_lib_free_pages(substream); | |
204 | } | |
205 | ||
8cc72361 WYC |
206 | |
207 | static int ct_pcm_playback_prepare(struct snd_pcm_substream *substream) | |
208 | { | |
209 | int err; | |
210 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
211 | struct snd_pcm_runtime *runtime = substream->runtime; | |
212 | struct ct_atc_pcm *apcm = runtime->private_data; | |
213 | ||
214 | if (IEC958 == substream->pcm->device) | |
215 | err = atc->spdif_passthru_playback_prepare(atc, apcm); | |
216 | else | |
217 | err = atc->pcm_playback_prepare(atc, apcm); | |
218 | ||
219 | if (err < 0) { | |
0cae90a9 SM |
220 | dev_err(atc->card->dev, |
221 | "Preparing pcm playback failed!!!\n"); | |
8cc72361 WYC |
222 | return err; |
223 | } | |
224 | ||
8cc72361 WYC |
225 | return 0; |
226 | } | |
227 | ||
228 | static int | |
229 | ct_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) | |
230 | { | |
231 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
232 | struct snd_pcm_runtime *runtime = substream->runtime; | |
233 | struct ct_atc_pcm *apcm = runtime->private_data; | |
234 | ||
235 | switch (cmd) { | |
236 | case SNDRV_PCM_TRIGGER_START: | |
237 | case SNDRV_PCM_TRIGGER_RESUME: | |
238 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
239 | atc->pcm_playback_start(atc, apcm); | |
8cc72361 WYC |
240 | break; |
241 | case SNDRV_PCM_TRIGGER_STOP: | |
242 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
243 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
8cc72361 WYC |
244 | atc->pcm_playback_stop(atc, apcm); |
245 | break; | |
246 | default: | |
247 | break; | |
248 | } | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static snd_pcm_uframes_t | |
254 | ct_pcm_playback_pointer(struct snd_pcm_substream *substream) | |
255 | { | |
256 | unsigned long position; | |
257 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
258 | struct snd_pcm_runtime *runtime = substream->runtime; | |
259 | struct ct_atc_pcm *apcm = runtime->private_data; | |
260 | ||
261 | /* Read out playback position */ | |
262 | position = atc->pcm_playback_position(atc, apcm); | |
263 | position = bytes_to_frames(runtime, position); | |
af8500bb TI |
264 | if (position >= runtime->buffer_size) |
265 | position = 0; | |
8cc72361 WYC |
266 | return position; |
267 | } | |
268 | ||
269 | /* pcm capture operations */ | |
270 | static int ct_pcm_capture_open(struct snd_pcm_substream *substream) | |
271 | { | |
272 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
273 | struct snd_pcm_runtime *runtime = substream->runtime; | |
274 | struct ct_atc_pcm *apcm; | |
275 | int err; | |
276 | ||
277 | apcm = kzalloc(sizeof(*apcm), GFP_KERNEL); | |
35ebf6e7 | 278 | if (!apcm) |
8cc72361 WYC |
279 | return -ENOMEM; |
280 | ||
8cc72361 | 281 | apcm->started = 0; |
8cc72361 WYC |
282 | apcm->substream = substream; |
283 | apcm->interrupt = ct_atc_pcm_interrupt; | |
8cc72361 WYC |
284 | runtime->hw = ct_pcm_capture_hw; |
285 | runtime->hw.rate_max = atc->rsr * atc->msr; | |
286 | ||
287 | err = snd_pcm_hw_constraint_integer(runtime, | |
288 | SNDRV_PCM_HW_PARAM_PERIODS); | |
289 | if (err < 0) { | |
290 | kfree(apcm); | |
291 | return err; | |
292 | } | |
293 | err = snd_pcm_hw_constraint_minmax(runtime, | |
294 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
295 | 1024, UINT_MAX); | |
296 | if (err < 0) { | |
297 | kfree(apcm); | |
298 | return err; | |
299 | } | |
300 | ||
b7bbf876 | 301 | apcm->timer = ct_timer_instance_new(atc->timer, apcm); |
fa2b30af JL |
302 | if (!apcm->timer) { |
303 | kfree(apcm); | |
b7bbf876 | 304 | return -ENOMEM; |
fa2b30af JL |
305 | } |
306 | runtime->private_data = apcm; | |
307 | runtime->private_free = ct_atc_pcm_free_substream; | |
b7bbf876 | 308 | |
8cc72361 WYC |
309 | return 0; |
310 | } | |
311 | ||
312 | static int ct_pcm_capture_close(struct snd_pcm_substream *substream) | |
313 | { | |
314 | /* The ct_atc_pcm object will be freed by runtime->private_free */ | |
315 | /* TODO: Notify mixer inactive. */ | |
316 | return 0; | |
317 | } | |
318 | ||
319 | static int ct_pcm_capture_prepare(struct snd_pcm_substream *substream) | |
320 | { | |
321 | int err; | |
322 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
323 | struct snd_pcm_runtime *runtime = substream->runtime; | |
324 | struct ct_atc_pcm *apcm = runtime->private_data; | |
325 | ||
326 | err = atc->pcm_capture_prepare(atc, apcm); | |
327 | if (err < 0) { | |
0cae90a9 SM |
328 | dev_err(atc->card->dev, |
329 | "Preparing pcm capture failed!!!\n"); | |
8cc72361 WYC |
330 | return err; |
331 | } | |
332 | ||
8cc72361 WYC |
333 | return 0; |
334 | } | |
335 | ||
336 | static int | |
337 | ct_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) | |
338 | { | |
339 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
340 | struct snd_pcm_runtime *runtime = substream->runtime; | |
341 | struct ct_atc_pcm *apcm = runtime->private_data; | |
342 | ||
343 | switch (cmd) { | |
344 | case SNDRV_PCM_TRIGGER_START: | |
345 | atc->pcm_capture_start(atc, apcm); | |
8cc72361 WYC |
346 | break; |
347 | case SNDRV_PCM_TRIGGER_STOP: | |
8cc72361 WYC |
348 | atc->pcm_capture_stop(atc, apcm); |
349 | break; | |
350 | default: | |
8cc72361 WYC |
351 | atc->pcm_capture_stop(atc, apcm); |
352 | break; | |
353 | } | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | static snd_pcm_uframes_t | |
359 | ct_pcm_capture_pointer(struct snd_pcm_substream *substream) | |
360 | { | |
361 | unsigned long position; | |
362 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
363 | struct snd_pcm_runtime *runtime = substream->runtime; | |
364 | struct ct_atc_pcm *apcm = runtime->private_data; | |
365 | ||
366 | /* Read out playback position */ | |
367 | position = atc->pcm_capture_position(atc, apcm); | |
368 | position = bytes_to_frames(runtime, position); | |
af8500bb TI |
369 | if (position >= runtime->buffer_size) |
370 | position = 0; | |
8cc72361 WYC |
371 | return position; |
372 | } | |
373 | ||
374 | /* PCM operators for playback */ | |
6769e988 | 375 | static const struct snd_pcm_ops ct_pcm_playback_ops = { |
8cc72361 WYC |
376 | .open = ct_pcm_playback_open, |
377 | .close = ct_pcm_playback_close, | |
378 | .ioctl = snd_pcm_lib_ioctl, | |
379 | .hw_params = ct_pcm_hw_params, | |
380 | .hw_free = ct_pcm_hw_free, | |
381 | .prepare = ct_pcm_playback_prepare, | |
382 | .trigger = ct_pcm_playback_trigger, | |
383 | .pointer = ct_pcm_playback_pointer, | |
c76157d9 | 384 | .page = snd_pcm_sgbuf_ops_page, |
8cc72361 WYC |
385 | }; |
386 | ||
387 | /* PCM operators for capture */ | |
6769e988 | 388 | static const struct snd_pcm_ops ct_pcm_capture_ops = { |
8cc72361 WYC |
389 | .open = ct_pcm_capture_open, |
390 | .close = ct_pcm_capture_close, | |
391 | .ioctl = snd_pcm_lib_ioctl, | |
392 | .hw_params = ct_pcm_hw_params, | |
393 | .hw_free = ct_pcm_hw_free, | |
394 | .prepare = ct_pcm_capture_prepare, | |
395 | .trigger = ct_pcm_capture_trigger, | |
396 | .pointer = ct_pcm_capture_pointer, | |
c76157d9 | 397 | .page = snd_pcm_sgbuf_ops_page, |
8cc72361 WYC |
398 | }; |
399 | ||
8d50cdc1 TI |
400 | static const struct snd_pcm_chmap_elem surround_map[] = { |
401 | { .channels = 1, | |
7b31d009 | 402 | .map = { SNDRV_CHMAP_MONO } }, |
8d50cdc1 TI |
403 | { .channels = 2, |
404 | .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } }, | |
405 | { } | |
406 | }; | |
407 | ||
408 | static const struct snd_pcm_chmap_elem clfe_map[] = { | |
409 | { .channels = 1, | |
7b31d009 | 410 | .map = { SNDRV_CHMAP_MONO } }, |
8d50cdc1 TI |
411 | { .channels = 2, |
412 | .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } }, | |
413 | { } | |
414 | }; | |
415 | ||
416 | static const struct snd_pcm_chmap_elem side_map[] = { | |
417 | { .channels = 1, | |
7b31d009 | 418 | .map = { SNDRV_CHMAP_MONO } }, |
8d50cdc1 TI |
419 | { .channels = 2, |
420 | .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } }, | |
421 | { } | |
422 | }; | |
423 | ||
8cc72361 WYC |
424 | /* Create ALSA pcm device */ |
425 | int ct_alsa_pcm_create(struct ct_atc *atc, | |
426 | enum CTALSADEVS device, | |
427 | const char *device_name) | |
428 | { | |
429 | struct snd_pcm *pcm; | |
8d50cdc1 TI |
430 | const struct snd_pcm_chmap_elem *map; |
431 | int chs; | |
8cc72361 WYC |
432 | int err; |
433 | int playback_count, capture_count; | |
8cc72361 | 434 | |
391e6914 | 435 | playback_count = (IEC958 == device) ? 1 : 256; |
8cc72361 | 436 | capture_count = (FRONT == device) ? 1 : 0; |
8372d498 | 437 | err = snd_pcm_new(atc->card, "ctxfi", device, |
8cc72361 WYC |
438 | playback_count, capture_count, &pcm); |
439 | if (err < 0) { | |
0cae90a9 SM |
440 | dev_err(atc->card->dev, "snd_pcm_new failed!! Err=%d\n", |
441 | err); | |
8cc72361 WYC |
442 | return err; |
443 | } | |
444 | ||
445 | pcm->private_data = atc; | |
446 | pcm->info_flags = 0; | |
447 | pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; | |
8372d498 | 448 | strlcpy(pcm->name, device_name, sizeof(pcm->name)); |
8cc72361 WYC |
449 | |
450 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ct_pcm_playback_ops); | |
451 | ||
452 | if (FRONT == device) | |
453 | snd_pcm_set_ops(pcm, | |
454 | SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops); | |
455 | ||
c76157d9 | 456 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
8cc72361 WYC |
457 | snd_dma_pci_data(atc->pci), 128*1024, 128*1024); |
458 | ||
8d50cdc1 TI |
459 | chs = 2; |
460 | switch (device) { | |
461 | case FRONT: | |
462 | chs = 8; | |
463 | map = snd_pcm_std_chmaps; | |
464 | break; | |
465 | case SURROUND: | |
466 | map = surround_map; | |
467 | break; | |
468 | case CLFE: | |
469 | map = clfe_map; | |
470 | break; | |
471 | case SIDE: | |
472 | map = side_map; | |
473 | break; | |
474 | default: | |
475 | map = snd_pcm_std_chmaps; | |
476 | break; | |
477 | } | |
478 | err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, chs, | |
479 | 0, NULL); | |
480 | if (err < 0) | |
481 | return err; | |
482 | ||
c7561cd8 | 483 | #ifdef CONFIG_PM_SLEEP |
29959a09 WYC |
484 | atc->pcms[device] = pcm; |
485 | #endif | |
486 | ||
8cc72361 WYC |
487 | return 0; |
488 | } |