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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; | |
132 | runtime->private_data = apcm; | |
133 | runtime->private_free = ct_atc_pcm_free_substream; | |
134 | if (IEC958 == substream->pcm->device) { | |
135 | runtime->hw = ct_spdif_passthru_playback_hw; | |
136 | atc->spdif_out_passthru(atc, 1); | |
137 | } else { | |
138 | runtime->hw = ct_pcm_playback_hw; | |
139 | if (FRONT == substream->pcm->device) | |
140 | runtime->hw.channels_max = 8; | |
141 | } | |
142 | ||
143 | err = snd_pcm_hw_constraint_integer(runtime, | |
144 | SNDRV_PCM_HW_PARAM_PERIODS); | |
145 | if (err < 0) { | |
146 | kfree(apcm); | |
147 | return err; | |
148 | } | |
149 | err = snd_pcm_hw_constraint_minmax(runtime, | |
150 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
151 | 1024, UINT_MAX); | |
152 | if (err < 0) { | |
153 | kfree(apcm); | |
154 | return err; | |
155 | } | |
156 | ||
b7bbf876 TI |
157 | apcm->timer = ct_timer_instance_new(atc->timer, apcm); |
158 | if (!apcm->timer) | |
159 | return -ENOMEM; | |
160 | ||
8cc72361 WYC |
161 | return 0; |
162 | } | |
163 | ||
164 | static int ct_pcm_playback_close(struct snd_pcm_substream *substream) | |
165 | { | |
166 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
167 | ||
168 | /* TODO: Notify mixer inactive. */ | |
169 | if (IEC958 == substream->pcm->device) | |
170 | atc->spdif_out_passthru(atc, 0); | |
171 | ||
172 | /* The ct_atc_pcm object will be freed by runtime->private_free */ | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | static int ct_pcm_hw_params(struct snd_pcm_substream *substream, | |
178 | struct snd_pcm_hw_params *hw_params) | |
179 | { | |
a5990dc5 TI |
180 | struct ct_atc *atc = snd_pcm_substream_chip(substream); |
181 | struct ct_atc_pcm *apcm = substream->runtime->private_data; | |
182 | int err; | |
183 | ||
184 | err = snd_pcm_lib_malloc_pages(substream, | |
8cc72361 | 185 | params_buffer_bytes(hw_params)); |
a5990dc5 TI |
186 | if (err < 0) |
187 | return err; | |
188 | /* clear previous resources */ | |
189 | atc->pcm_release_resources(atc, apcm); | |
190 | return err; | |
8cc72361 WYC |
191 | } |
192 | ||
193 | static int ct_pcm_hw_free(struct snd_pcm_substream *substream) | |
194 | { | |
a5990dc5 TI |
195 | struct ct_atc *atc = snd_pcm_substream_chip(substream); |
196 | struct ct_atc_pcm *apcm = substream->runtime->private_data; | |
197 | ||
198 | /* clear previous resources */ | |
199 | atc->pcm_release_resources(atc, apcm); | |
8cc72361 WYC |
200 | /* Free snd-allocated pages */ |
201 | return snd_pcm_lib_free_pages(substream); | |
202 | } | |
203 | ||
8cc72361 WYC |
204 | |
205 | static int ct_pcm_playback_prepare(struct snd_pcm_substream *substream) | |
206 | { | |
207 | int err; | |
208 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
209 | struct snd_pcm_runtime *runtime = substream->runtime; | |
210 | struct ct_atc_pcm *apcm = runtime->private_data; | |
211 | ||
212 | if (IEC958 == substream->pcm->device) | |
213 | err = atc->spdif_passthru_playback_prepare(atc, apcm); | |
214 | else | |
215 | err = atc->pcm_playback_prepare(atc, apcm); | |
216 | ||
217 | if (err < 0) { | |
b3e0afe6 | 218 | printk(KERN_ERR "ctxfi: Preparing pcm playback failed!!!\n"); |
8cc72361 WYC |
219 | return err; |
220 | } | |
221 | ||
8cc72361 WYC |
222 | return 0; |
223 | } | |
224 | ||
225 | static int | |
226 | ct_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) | |
227 | { | |
228 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
229 | struct snd_pcm_runtime *runtime = substream->runtime; | |
230 | struct ct_atc_pcm *apcm = runtime->private_data; | |
231 | ||
232 | switch (cmd) { | |
233 | case SNDRV_PCM_TRIGGER_START: | |
234 | case SNDRV_PCM_TRIGGER_RESUME: | |
235 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
236 | atc->pcm_playback_start(atc, apcm); | |
8cc72361 WYC |
237 | break; |
238 | case SNDRV_PCM_TRIGGER_STOP: | |
239 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
240 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
8cc72361 WYC |
241 | atc->pcm_playback_stop(atc, apcm); |
242 | break; | |
243 | default: | |
244 | break; | |
245 | } | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
250 | static snd_pcm_uframes_t | |
251 | ct_pcm_playback_pointer(struct snd_pcm_substream *substream) | |
252 | { | |
253 | unsigned long position; | |
254 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
255 | struct snd_pcm_runtime *runtime = substream->runtime; | |
256 | struct ct_atc_pcm *apcm = runtime->private_data; | |
257 | ||
258 | /* Read out playback position */ | |
259 | position = atc->pcm_playback_position(atc, apcm); | |
260 | position = bytes_to_frames(runtime, position); | |
af8500bb TI |
261 | if (position >= runtime->buffer_size) |
262 | position = 0; | |
8cc72361 WYC |
263 | return position; |
264 | } | |
265 | ||
266 | /* pcm capture operations */ | |
267 | static int ct_pcm_capture_open(struct snd_pcm_substream *substream) | |
268 | { | |
269 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
270 | struct snd_pcm_runtime *runtime = substream->runtime; | |
271 | struct ct_atc_pcm *apcm; | |
272 | int err; | |
273 | ||
274 | apcm = kzalloc(sizeof(*apcm), GFP_KERNEL); | |
35ebf6e7 | 275 | if (!apcm) |
8cc72361 WYC |
276 | return -ENOMEM; |
277 | ||
8cc72361 | 278 | apcm->started = 0; |
8cc72361 WYC |
279 | apcm->substream = substream; |
280 | apcm->interrupt = ct_atc_pcm_interrupt; | |
281 | runtime->private_data = apcm; | |
282 | runtime->private_free = ct_atc_pcm_free_substream; | |
283 | runtime->hw = ct_pcm_capture_hw; | |
284 | runtime->hw.rate_max = atc->rsr * atc->msr; | |
285 | ||
286 | err = snd_pcm_hw_constraint_integer(runtime, | |
287 | SNDRV_PCM_HW_PARAM_PERIODS); | |
288 | if (err < 0) { | |
289 | kfree(apcm); | |
290 | return err; | |
291 | } | |
292 | err = snd_pcm_hw_constraint_minmax(runtime, | |
293 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
294 | 1024, UINT_MAX); | |
295 | if (err < 0) { | |
296 | kfree(apcm); | |
297 | return err; | |
298 | } | |
299 | ||
b7bbf876 TI |
300 | apcm->timer = ct_timer_instance_new(atc->timer, apcm); |
301 | if (!apcm->timer) | |
302 | return -ENOMEM; | |
303 | ||
8cc72361 WYC |
304 | return 0; |
305 | } | |
306 | ||
307 | static int ct_pcm_capture_close(struct snd_pcm_substream *substream) | |
308 | { | |
309 | /* The ct_atc_pcm object will be freed by runtime->private_free */ | |
310 | /* TODO: Notify mixer inactive. */ | |
311 | return 0; | |
312 | } | |
313 | ||
314 | static int ct_pcm_capture_prepare(struct snd_pcm_substream *substream) | |
315 | { | |
316 | int err; | |
317 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
318 | struct snd_pcm_runtime *runtime = substream->runtime; | |
319 | struct ct_atc_pcm *apcm = runtime->private_data; | |
320 | ||
321 | err = atc->pcm_capture_prepare(atc, apcm); | |
322 | if (err < 0) { | |
b3e0afe6 | 323 | printk(KERN_ERR "ctxfi: Preparing pcm capture failed!!!\n"); |
8cc72361 WYC |
324 | return err; |
325 | } | |
326 | ||
8cc72361 WYC |
327 | return 0; |
328 | } | |
329 | ||
330 | static int | |
331 | ct_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) | |
332 | { | |
333 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
334 | struct snd_pcm_runtime *runtime = substream->runtime; | |
335 | struct ct_atc_pcm *apcm = runtime->private_data; | |
336 | ||
337 | switch (cmd) { | |
338 | case SNDRV_PCM_TRIGGER_START: | |
339 | atc->pcm_capture_start(atc, apcm); | |
8cc72361 WYC |
340 | break; |
341 | case SNDRV_PCM_TRIGGER_STOP: | |
8cc72361 WYC |
342 | atc->pcm_capture_stop(atc, apcm); |
343 | break; | |
344 | default: | |
8cc72361 WYC |
345 | atc->pcm_capture_stop(atc, apcm); |
346 | break; | |
347 | } | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | static snd_pcm_uframes_t | |
353 | ct_pcm_capture_pointer(struct snd_pcm_substream *substream) | |
354 | { | |
355 | unsigned long position; | |
356 | struct ct_atc *atc = snd_pcm_substream_chip(substream); | |
357 | struct snd_pcm_runtime *runtime = substream->runtime; | |
358 | struct ct_atc_pcm *apcm = runtime->private_data; | |
359 | ||
360 | /* Read out playback position */ | |
361 | position = atc->pcm_capture_position(atc, apcm); | |
362 | position = bytes_to_frames(runtime, position); | |
af8500bb TI |
363 | if (position >= runtime->buffer_size) |
364 | position = 0; | |
8cc72361 WYC |
365 | return position; |
366 | } | |
367 | ||
368 | /* PCM operators for playback */ | |
369 | static struct snd_pcm_ops ct_pcm_playback_ops = { | |
370 | .open = ct_pcm_playback_open, | |
371 | .close = ct_pcm_playback_close, | |
372 | .ioctl = snd_pcm_lib_ioctl, | |
373 | .hw_params = ct_pcm_hw_params, | |
374 | .hw_free = ct_pcm_hw_free, | |
375 | .prepare = ct_pcm_playback_prepare, | |
376 | .trigger = ct_pcm_playback_trigger, | |
377 | .pointer = ct_pcm_playback_pointer, | |
c76157d9 | 378 | .page = snd_pcm_sgbuf_ops_page, |
8cc72361 WYC |
379 | }; |
380 | ||
381 | /* PCM operators for capture */ | |
382 | static struct snd_pcm_ops ct_pcm_capture_ops = { | |
383 | .open = ct_pcm_capture_open, | |
384 | .close = ct_pcm_capture_close, | |
385 | .ioctl = snd_pcm_lib_ioctl, | |
386 | .hw_params = ct_pcm_hw_params, | |
387 | .hw_free = ct_pcm_hw_free, | |
388 | .prepare = ct_pcm_capture_prepare, | |
389 | .trigger = ct_pcm_capture_trigger, | |
390 | .pointer = ct_pcm_capture_pointer, | |
c76157d9 | 391 | .page = snd_pcm_sgbuf_ops_page, |
8cc72361 WYC |
392 | }; |
393 | ||
394 | /* Create ALSA pcm device */ | |
395 | int ct_alsa_pcm_create(struct ct_atc *atc, | |
396 | enum CTALSADEVS device, | |
397 | const char *device_name) | |
398 | { | |
399 | struct snd_pcm *pcm; | |
400 | int err; | |
401 | int playback_count, capture_count; | |
8cc72361 | 402 | |
8cc72361 WYC |
403 | playback_count = (IEC958 == device) ? 1 : 8; |
404 | capture_count = (FRONT == device) ? 1 : 0; | |
8372d498 | 405 | err = snd_pcm_new(atc->card, "ctxfi", device, |
8cc72361 WYC |
406 | playback_count, capture_count, &pcm); |
407 | if (err < 0) { | |
b3e0afe6 | 408 | printk(KERN_ERR "ctxfi: snd_pcm_new failed!! Err=%d\n", err); |
8cc72361 WYC |
409 | return err; |
410 | } | |
411 | ||
412 | pcm->private_data = atc; | |
413 | pcm->info_flags = 0; | |
414 | pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX; | |
8372d498 | 415 | strlcpy(pcm->name, device_name, sizeof(pcm->name)); |
8cc72361 WYC |
416 | |
417 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ct_pcm_playback_ops); | |
418 | ||
419 | if (FRONT == device) | |
420 | snd_pcm_set_ops(pcm, | |
421 | SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops); | |
422 | ||
c76157d9 | 423 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
8cc72361 WYC |
424 | snd_dma_pci_data(atc->pci), 128*1024, 128*1024); |
425 | ||
29959a09 WYC |
426 | #ifdef CONFIG_PM |
427 | atc->pcms[device] = pcm; | |
428 | #endif | |
429 | ||
8cc72361 WYC |
430 | return 0; |
431 | } |