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1da177e4 LT |
1 | /* |
2 | * Digital Audio (PCM) abstract layer | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <sound/driver.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/smp_lock.h> | |
25 | #include <linux/file.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/time.h> | |
28 | #include <linux/uio.h> | |
29 | #include <sound/core.h> | |
30 | #include <sound/control.h> | |
31 | #include <sound/info.h> | |
32 | #include <sound/pcm.h> | |
33 | #include <sound/pcm_params.h> | |
34 | #include <sound/timer.h> | |
35 | #include <sound/minors.h> | |
36 | #include <asm/io.h> | |
37 | ||
38 | /* | |
39 | * Compatibility | |
40 | */ | |
41 | ||
877211f5 | 42 | struct snd_pcm_hw_params_old { |
1da177e4 LT |
43 | unsigned int flags; |
44 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - | |
45 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; | |
877211f5 | 46 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
1da177e4 LT |
47 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS + 1]; |
48 | unsigned int rmask; | |
49 | unsigned int cmask; | |
50 | unsigned int info; | |
51 | unsigned int msbits; | |
52 | unsigned int rate_num; | |
53 | unsigned int rate_den; | |
877211f5 | 54 | snd_pcm_uframes_t fifo_size; |
1da177e4 LT |
55 | unsigned char reserved[64]; |
56 | }; | |
57 | ||
59d48582 | 58 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
877211f5 TI |
59 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
60 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) | |
1da177e4 | 61 | |
877211f5 TI |
62 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
63 | struct snd_pcm_hw_params_old __user * _oparams); | |
64 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, | |
65 | struct snd_pcm_hw_params_old __user * _oparams); | |
59d48582 | 66 | #endif |
f87135f5 | 67 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream); |
1da177e4 LT |
68 | |
69 | /* | |
70 | * | |
71 | */ | |
72 | ||
73 | DEFINE_RWLOCK(snd_pcm_link_rwlock); | |
74 | static DECLARE_RWSEM(snd_pcm_link_rwsem); | |
75 | ||
76 | ||
77 | static inline mm_segment_t snd_enter_user(void) | |
78 | { | |
79 | mm_segment_t fs = get_fs(); | |
80 | set_fs(get_ds()); | |
81 | return fs; | |
82 | } | |
83 | ||
84 | static inline void snd_leave_user(mm_segment_t fs) | |
85 | { | |
86 | set_fs(fs); | |
87 | } | |
88 | ||
89 | ||
90 | ||
877211f5 | 91 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 92 | { |
877211f5 TI |
93 | struct snd_pcm_runtime *runtime; |
94 | struct snd_pcm *pcm = substream->pcm; | |
95 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 LT |
96 | |
97 | snd_assert(substream != NULL, return -ENXIO); | |
98 | memset(info, 0, sizeof(*info)); | |
99 | info->card = pcm->card->number; | |
100 | info->device = pcm->device; | |
101 | info->stream = substream->stream; | |
102 | info->subdevice = substream->number; | |
103 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
104 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
105 | info->dev_class = pcm->dev_class; | |
106 | info->dev_subclass = pcm->dev_subclass; | |
107 | info->subdevices_count = pstr->substream_count; | |
108 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
109 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
110 | runtime = substream->runtime; | |
111 | /* AB: FIXME!!! This is definitely nonsense */ | |
112 | if (runtime) { | |
113 | info->sync = runtime->sync; | |
114 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
877211f5 TI |
119 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
120 | struct snd_pcm_info __user * _info) | |
1da177e4 | 121 | { |
877211f5 | 122 | struct snd_pcm_info *info; |
1da177e4 LT |
123 | int err; |
124 | ||
125 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
126 | if (! info) | |
127 | return -ENOMEM; | |
128 | err = snd_pcm_info(substream, info); | |
129 | if (err >= 0) { | |
130 | if (copy_to_user(_info, info, sizeof(*info))) | |
131 | err = -EFAULT; | |
132 | } | |
133 | kfree(info); | |
134 | return err; | |
135 | } | |
136 | ||
137 | #undef RULES_DEBUG | |
138 | ||
139 | #ifdef RULES_DEBUG | |
140 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
141 | char *snd_pcm_hw_param_names[] = { | |
142 | HW_PARAM(ACCESS), | |
143 | HW_PARAM(FORMAT), | |
144 | HW_PARAM(SUBFORMAT), | |
145 | HW_PARAM(SAMPLE_BITS), | |
146 | HW_PARAM(FRAME_BITS), | |
147 | HW_PARAM(CHANNELS), | |
148 | HW_PARAM(RATE), | |
149 | HW_PARAM(PERIOD_TIME), | |
150 | HW_PARAM(PERIOD_SIZE), | |
151 | HW_PARAM(PERIOD_BYTES), | |
152 | HW_PARAM(PERIODS), | |
153 | HW_PARAM(BUFFER_TIME), | |
154 | HW_PARAM(BUFFER_SIZE), | |
155 | HW_PARAM(BUFFER_BYTES), | |
156 | HW_PARAM(TICK_TIME), | |
157 | }; | |
158 | #endif | |
159 | ||
877211f5 TI |
160 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
161 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
162 | { |
163 | unsigned int k; | |
877211f5 TI |
164 | struct snd_pcm_hardware *hw; |
165 | struct snd_interval *i = NULL; | |
166 | struct snd_mask *m = NULL; | |
167 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
168 | unsigned int rstamps[constrs->rules_num]; |
169 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
170 | unsigned int stamp = 2; | |
171 | int changed, again; | |
172 | ||
173 | params->info = 0; | |
174 | params->fifo_size = 0; | |
175 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
176 | params->msbits = 0; | |
177 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
178 | params->rate_num = 0; | |
179 | params->rate_den = 0; | |
180 | } | |
181 | ||
182 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
183 | m = hw_param_mask(params, k); | |
184 | if (snd_mask_empty(m)) | |
185 | return -EINVAL; | |
186 | if (!(params->rmask & (1 << k))) | |
187 | continue; | |
188 | #ifdef RULES_DEBUG | |
189 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
190 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
191 | #endif | |
192 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
193 | #ifdef RULES_DEBUG | |
194 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
195 | #endif | |
196 | if (changed) | |
197 | params->cmask |= 1 << k; | |
198 | if (changed < 0) | |
199 | return changed; | |
200 | } | |
201 | ||
202 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
203 | i = hw_param_interval(params, k); | |
204 | if (snd_interval_empty(i)) | |
205 | return -EINVAL; | |
206 | if (!(params->rmask & (1 << k))) | |
207 | continue; | |
208 | #ifdef RULES_DEBUG | |
209 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
210 | if (i->empty) | |
211 | printk("empty"); | |
212 | else | |
213 | printk("%c%u %u%c", | |
214 | i->openmin ? '(' : '[', i->min, | |
215 | i->max, i->openmax ? ')' : ']'); | |
216 | printk(" -> "); | |
217 | #endif | |
218 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
219 | #ifdef RULES_DEBUG | |
220 | if (i->empty) | |
221 | printk("empty\n"); | |
222 | else | |
223 | printk("%c%u %u%c\n", | |
224 | i->openmin ? '(' : '[', i->min, | |
225 | i->max, i->openmax ? ')' : ']'); | |
226 | #endif | |
227 | if (changed) | |
228 | params->cmask |= 1 << k; | |
229 | if (changed < 0) | |
230 | return changed; | |
231 | } | |
232 | ||
233 | for (k = 0; k < constrs->rules_num; k++) | |
234 | rstamps[k] = 0; | |
235 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
236 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
237 | do { | |
238 | again = 0; | |
239 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 240 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
241 | unsigned int d; |
242 | int doit = 0; | |
243 | if (r->cond && !(r->cond & params->flags)) | |
244 | continue; | |
245 | for (d = 0; r->deps[d] >= 0; d++) { | |
246 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
247 | doit = 1; | |
248 | break; | |
249 | } | |
250 | } | |
251 | if (!doit) | |
252 | continue; | |
253 | #ifdef RULES_DEBUG | |
254 | printk("Rule %d [%p]: ", k, r->func); | |
255 | if (r->var >= 0) { | |
256 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
257 | if (hw_is_mask(r->var)) { | |
258 | m = hw_param_mask(params, r->var); | |
259 | printk("%x", *m->bits); | |
260 | } else { | |
261 | i = hw_param_interval(params, r->var); | |
262 | if (i->empty) | |
263 | printk("empty"); | |
264 | else | |
265 | printk("%c%u %u%c", | |
266 | i->openmin ? '(' : '[', i->min, | |
267 | i->max, i->openmax ? ')' : ']'); | |
268 | } | |
269 | } | |
270 | #endif | |
271 | changed = r->func(params, r); | |
272 | #ifdef RULES_DEBUG | |
273 | if (r->var >= 0) { | |
274 | printk(" -> "); | |
275 | if (hw_is_mask(r->var)) | |
276 | printk("%x", *m->bits); | |
277 | else { | |
278 | if (i->empty) | |
279 | printk("empty"); | |
280 | else | |
281 | printk("%c%u %u%c", | |
282 | i->openmin ? '(' : '[', i->min, | |
283 | i->max, i->openmax ? ')' : ']'); | |
284 | } | |
285 | } | |
286 | printk("\n"); | |
287 | #endif | |
288 | rstamps[k] = stamp; | |
289 | if (changed && r->var >= 0) { | |
290 | params->cmask |= (1 << r->var); | |
291 | vstamps[r->var] = stamp; | |
292 | again = 1; | |
293 | } | |
294 | if (changed < 0) | |
295 | return changed; | |
296 | stamp++; | |
297 | } | |
298 | } while (again); | |
299 | if (!params->msbits) { | |
300 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
301 | if (snd_interval_single(i)) | |
302 | params->msbits = snd_interval_value(i); | |
303 | } | |
304 | ||
305 | if (!params->rate_den) { | |
306 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
307 | if (snd_interval_single(i)) { | |
308 | params->rate_num = snd_interval_value(i); | |
309 | params->rate_den = 1; | |
310 | } | |
311 | } | |
312 | ||
313 | hw = &substream->runtime->hw; | |
314 | if (!params->info) | |
315 | params->info = hw->info; | |
316 | if (!params->fifo_size) | |
317 | params->fifo_size = hw->fifo_size; | |
318 | params->rmask = 0; | |
319 | return 0; | |
320 | } | |
321 | ||
877211f5 TI |
322 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
323 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 324 | { |
877211f5 | 325 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
326 | int err; |
327 | ||
328 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
329 | if (!params) { | |
330 | err = -ENOMEM; | |
331 | goto out; | |
332 | } | |
333 | if (copy_from_user(params, _params, sizeof(*params))) { | |
334 | err = -EFAULT; | |
335 | goto out; | |
336 | } | |
337 | err = snd_pcm_hw_refine(substream, params); | |
338 | if (copy_to_user(_params, params, sizeof(*params))) { | |
339 | if (!err) | |
340 | err = -EFAULT; | |
341 | } | |
342 | out: | |
343 | kfree(params); | |
344 | return err; | |
345 | } | |
346 | ||
877211f5 TI |
347 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
348 | struct snd_pcm_hw_params *params) | |
1da177e4 | 349 | { |
877211f5 | 350 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
351 | int err; |
352 | unsigned int bits; | |
353 | snd_pcm_uframes_t frames; | |
354 | ||
355 | snd_assert(substream != NULL, return -ENXIO); | |
356 | runtime = substream->runtime; | |
357 | snd_assert(runtime != NULL, return -ENXIO); | |
358 | snd_pcm_stream_lock_irq(substream); | |
359 | switch (runtime->status->state) { | |
360 | case SNDRV_PCM_STATE_OPEN: | |
361 | case SNDRV_PCM_STATE_SETUP: | |
362 | case SNDRV_PCM_STATE_PREPARED: | |
363 | break; | |
364 | default: | |
365 | snd_pcm_stream_unlock_irq(substream); | |
366 | return -EBADFD; | |
367 | } | |
368 | snd_pcm_stream_unlock_irq(substream); | |
369 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
370 | if (!substream->oss.oss) | |
371 | #endif | |
372 | if (atomic_read(&runtime->mmap_count)) | |
373 | return -EBADFD; | |
374 | ||
375 | params->rmask = ~0U; | |
376 | err = snd_pcm_hw_refine(substream, params); | |
377 | if (err < 0) | |
378 | goto _error; | |
379 | ||
380 | err = snd_pcm_hw_params_choose(substream, params); | |
381 | if (err < 0) | |
382 | goto _error; | |
383 | ||
384 | if (substream->ops->hw_params != NULL) { | |
385 | err = substream->ops->hw_params(substream, params); | |
386 | if (err < 0) | |
387 | goto _error; | |
388 | } | |
389 | ||
390 | runtime->access = params_access(params); | |
391 | runtime->format = params_format(params); | |
392 | runtime->subformat = params_subformat(params); | |
393 | runtime->channels = params_channels(params); | |
394 | runtime->rate = params_rate(params); | |
395 | runtime->period_size = params_period_size(params); | |
396 | runtime->periods = params_periods(params); | |
397 | runtime->buffer_size = params_buffer_size(params); | |
398 | runtime->tick_time = params_tick_time(params); | |
399 | runtime->info = params->info; | |
400 | runtime->rate_num = params->rate_num; | |
401 | runtime->rate_den = params->rate_den; | |
402 | ||
403 | bits = snd_pcm_format_physical_width(runtime->format); | |
404 | runtime->sample_bits = bits; | |
405 | bits *= runtime->channels; | |
406 | runtime->frame_bits = bits; | |
407 | frames = 1; | |
408 | while (bits % 8 != 0) { | |
409 | bits *= 2; | |
410 | frames *= 2; | |
411 | } | |
412 | runtime->byte_align = bits / 8; | |
413 | runtime->min_align = frames; | |
414 | ||
415 | /* Default sw params */ | |
416 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
417 | runtime->period_step = 1; | |
418 | runtime->sleep_min = 0; | |
419 | runtime->control->avail_min = runtime->period_size; | |
420 | runtime->xfer_align = runtime->period_size; | |
421 | runtime->start_threshold = 1; | |
422 | runtime->stop_threshold = runtime->buffer_size; | |
423 | runtime->silence_threshold = 0; | |
424 | runtime->silence_size = 0; | |
425 | runtime->boundary = runtime->buffer_size; | |
426 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
427 | runtime->boundary *= 2; | |
428 | ||
429 | snd_pcm_timer_resolution_change(substream); | |
430 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
431 | return 0; | |
432 | _error: | |
433 | /* hardware might be unuseable from this time, | |
434 | so we force application to retry to set | |
435 | the correct hardware parameter settings */ | |
436 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
437 | if (substream->ops->hw_free != NULL) | |
438 | substream->ops->hw_free(substream); | |
439 | return err; | |
440 | } | |
441 | ||
877211f5 TI |
442 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
443 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 444 | { |
877211f5 | 445 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
446 | int err; |
447 | ||
448 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
449 | if (!params) { | |
450 | err = -ENOMEM; | |
451 | goto out; | |
452 | } | |
453 | if (copy_from_user(params, _params, sizeof(*params))) { | |
454 | err = -EFAULT; | |
455 | goto out; | |
456 | } | |
457 | err = snd_pcm_hw_params(substream, params); | |
458 | if (copy_to_user(_params, params, sizeof(*params))) { | |
459 | if (!err) | |
460 | err = -EFAULT; | |
461 | } | |
462 | out: | |
463 | kfree(params); | |
464 | return err; | |
465 | } | |
466 | ||
877211f5 | 467 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 468 | { |
877211f5 | 469 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
470 | int result = 0; |
471 | ||
472 | snd_assert(substream != NULL, return -ENXIO); | |
473 | runtime = substream->runtime; | |
474 | snd_assert(runtime != NULL, return -ENXIO); | |
475 | snd_pcm_stream_lock_irq(substream); | |
476 | switch (runtime->status->state) { | |
477 | case SNDRV_PCM_STATE_SETUP: | |
478 | case SNDRV_PCM_STATE_PREPARED: | |
479 | break; | |
480 | default: | |
481 | snd_pcm_stream_unlock_irq(substream); | |
482 | return -EBADFD; | |
483 | } | |
484 | snd_pcm_stream_unlock_irq(substream); | |
485 | if (atomic_read(&runtime->mmap_count)) | |
486 | return -EBADFD; | |
487 | if (substream->ops->hw_free) | |
488 | result = substream->ops->hw_free(substream); | |
489 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
490 | return result; | |
491 | } | |
492 | ||
877211f5 TI |
493 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
494 | struct snd_pcm_sw_params *params) | |
1da177e4 | 495 | { |
877211f5 | 496 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
497 | |
498 | snd_assert(substream != NULL, return -ENXIO); | |
499 | runtime = substream->runtime; | |
500 | snd_assert(runtime != NULL, return -ENXIO); | |
501 | snd_pcm_stream_lock_irq(substream); | |
502 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
503 | snd_pcm_stream_unlock_irq(substream); | |
504 | return -EBADFD; | |
505 | } | |
506 | snd_pcm_stream_unlock_irq(substream); | |
507 | ||
508 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
509 | return -EINVAL; | |
510 | if (params->avail_min == 0) | |
511 | return -EINVAL; | |
512 | if (params->xfer_align == 0 || | |
513 | params->xfer_align % runtime->min_align != 0) | |
514 | return -EINVAL; | |
515 | if (params->silence_size >= runtime->boundary) { | |
516 | if (params->silence_threshold != 0) | |
517 | return -EINVAL; | |
518 | } else { | |
519 | if (params->silence_size > params->silence_threshold) | |
520 | return -EINVAL; | |
521 | if (params->silence_threshold > runtime->buffer_size) | |
522 | return -EINVAL; | |
523 | } | |
524 | snd_pcm_stream_lock_irq(substream); | |
525 | runtime->tstamp_mode = params->tstamp_mode; | |
526 | runtime->sleep_min = params->sleep_min; | |
527 | runtime->period_step = params->period_step; | |
528 | runtime->control->avail_min = params->avail_min; | |
529 | runtime->start_threshold = params->start_threshold; | |
530 | runtime->stop_threshold = params->stop_threshold; | |
531 | runtime->silence_threshold = params->silence_threshold; | |
532 | runtime->silence_size = params->silence_size; | |
533 | runtime->xfer_align = params->xfer_align; | |
534 | params->boundary = runtime->boundary; | |
535 | if (snd_pcm_running(substream)) { | |
536 | if (runtime->sleep_min) | |
537 | snd_pcm_tick_prepare(substream); | |
538 | else | |
539 | snd_pcm_tick_set(substream, 0); | |
540 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
541 | runtime->silence_size > 0) | |
542 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
543 | wake_up(&runtime->sleep); | |
544 | } | |
545 | snd_pcm_stream_unlock_irq(substream); | |
546 | return 0; | |
547 | } | |
548 | ||
877211f5 TI |
549 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
550 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 551 | { |
877211f5 | 552 | struct snd_pcm_sw_params params; |
1da177e4 LT |
553 | int err; |
554 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
555 | return -EFAULT; | |
556 | err = snd_pcm_sw_params(substream, ¶ms); | |
557 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
558 | return -EFAULT; | |
559 | return err; | |
560 | } | |
561 | ||
877211f5 TI |
562 | int snd_pcm_status(struct snd_pcm_substream *substream, |
563 | struct snd_pcm_status *status) | |
1da177e4 | 564 | { |
877211f5 | 565 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
566 | |
567 | snd_pcm_stream_lock_irq(substream); | |
568 | status->state = runtime->status->state; | |
569 | status->suspended_state = runtime->status->suspended_state; | |
570 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
571 | goto _end; | |
572 | status->trigger_tstamp = runtime->trigger_tstamp; | |
573 | if (snd_pcm_running(substream)) { | |
574 | snd_pcm_update_hw_ptr(substream); | |
575 | if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP) | |
576 | status->tstamp = runtime->status->tstamp; | |
577 | else | |
07799e75 | 578 | getnstimeofday(&status->tstamp); |
1da177e4 | 579 | } else |
07799e75 | 580 | getnstimeofday(&status->tstamp); |
1da177e4 LT |
581 | status->appl_ptr = runtime->control->appl_ptr; |
582 | status->hw_ptr = runtime->status->hw_ptr; | |
583 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
584 | status->avail = snd_pcm_playback_avail(runtime); | |
585 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
586 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
587 | status->delay = runtime->buffer_size - status->avail; | |
588 | else | |
589 | status->delay = 0; | |
590 | } else { | |
591 | status->avail = snd_pcm_capture_avail(runtime); | |
592 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
593 | status->delay = status->avail; | |
594 | else | |
595 | status->delay = 0; | |
596 | } | |
597 | status->avail_max = runtime->avail_max; | |
598 | status->overrange = runtime->overrange; | |
599 | runtime->avail_max = 0; | |
600 | runtime->overrange = 0; | |
601 | _end: | |
602 | snd_pcm_stream_unlock_irq(substream); | |
603 | return 0; | |
604 | } | |
605 | ||
877211f5 TI |
606 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
607 | struct snd_pcm_status __user * _status) | |
1da177e4 | 608 | { |
877211f5 TI |
609 | struct snd_pcm_status status; |
610 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
611 | int res; |
612 | ||
613 | snd_assert(substream != NULL, return -ENXIO); | |
614 | runtime = substream->runtime; | |
615 | memset(&status, 0, sizeof(status)); | |
616 | res = snd_pcm_status(substream, &status); | |
617 | if (res < 0) | |
618 | return res; | |
619 | if (copy_to_user(_status, &status, sizeof(status))) | |
620 | return -EFAULT; | |
621 | return 0; | |
622 | } | |
623 | ||
877211f5 TI |
624 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
625 | struct snd_pcm_channel_info * info) | |
1da177e4 | 626 | { |
877211f5 | 627 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
628 | unsigned int channel; |
629 | ||
630 | snd_assert(substream != NULL, return -ENXIO); | |
631 | channel = info->channel; | |
632 | runtime = substream->runtime; | |
633 | snd_pcm_stream_lock_irq(substream); | |
634 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
635 | snd_pcm_stream_unlock_irq(substream); | |
636 | return -EBADFD; | |
637 | } | |
638 | snd_pcm_stream_unlock_irq(substream); | |
639 | if (channel >= runtime->channels) | |
640 | return -EINVAL; | |
641 | memset(info, 0, sizeof(*info)); | |
642 | info->channel = channel; | |
643 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
644 | } | |
645 | ||
877211f5 TI |
646 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
647 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 648 | { |
877211f5 | 649 | struct snd_pcm_channel_info info; |
1da177e4 LT |
650 | int res; |
651 | ||
652 | if (copy_from_user(&info, _info, sizeof(info))) | |
653 | return -EFAULT; | |
654 | res = snd_pcm_channel_info(substream, &info); | |
655 | if (res < 0) | |
656 | return res; | |
657 | if (copy_to_user(_info, &info, sizeof(info))) | |
658 | return -EFAULT; | |
659 | return 0; | |
660 | } | |
661 | ||
877211f5 | 662 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 663 | { |
877211f5 | 664 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
665 | if (runtime->trigger_master == NULL) |
666 | return; | |
667 | if (runtime->trigger_master == substream) { | |
07799e75 | 668 | getnstimeofday(&runtime->trigger_tstamp); |
1da177e4 LT |
669 | } else { |
670 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
671 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
672 | } | |
673 | runtime->trigger_master = NULL; | |
674 | } | |
675 | ||
676 | struct action_ops { | |
877211f5 TI |
677 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
678 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
679 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
680 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
681 | }; |
682 | ||
683 | /* | |
684 | * this functions is core for handling of linked stream | |
685 | * Note: the stream state might be changed also on failure | |
686 | * Note2: call with calling stream lock + link lock | |
687 | */ | |
688 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 689 | struct snd_pcm_substream *substream, |
1da177e4 LT |
690 | int state, int do_lock) |
691 | { | |
692 | struct list_head *pos; | |
877211f5 TI |
693 | struct snd_pcm_substream *s = NULL; |
694 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
695 | int res = 0; |
696 | ||
697 | snd_pcm_group_for_each(pos, substream) { | |
698 | s = snd_pcm_group_substream_entry(pos); | |
699 | if (do_lock && s != substream) | |
700 | spin_lock(&s->self_group.lock); | |
701 | res = ops->pre_action(s, state); | |
702 | if (res < 0) | |
703 | goto _unlock; | |
704 | } | |
705 | snd_pcm_group_for_each(pos, substream) { | |
706 | s = snd_pcm_group_substream_entry(pos); | |
707 | res = ops->do_action(s, state); | |
708 | if (res < 0) { | |
709 | if (ops->undo_action) { | |
710 | snd_pcm_group_for_each(pos, substream) { | |
711 | s1 = snd_pcm_group_substream_entry(pos); | |
712 | if (s1 == s) /* failed stream */ | |
713 | break; | |
714 | ops->undo_action(s1, state); | |
715 | } | |
716 | } | |
717 | s = NULL; /* unlock all */ | |
718 | goto _unlock; | |
719 | } | |
720 | } | |
721 | snd_pcm_group_for_each(pos, substream) { | |
722 | s = snd_pcm_group_substream_entry(pos); | |
723 | ops->post_action(s, state); | |
724 | } | |
725 | _unlock: | |
726 | if (do_lock) { | |
727 | /* unlock streams */ | |
728 | snd_pcm_group_for_each(pos, substream) { | |
729 | s1 = snd_pcm_group_substream_entry(pos); | |
730 | if (s1 != substream) | |
731 | spin_unlock(&s1->self_group.lock); | |
732 | if (s1 == s) /* end */ | |
733 | break; | |
734 | } | |
735 | } | |
736 | return res; | |
737 | } | |
738 | ||
739 | /* | |
740 | * Note: call with stream lock | |
741 | */ | |
742 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 743 | struct snd_pcm_substream *substream, |
1da177e4 LT |
744 | int state) |
745 | { | |
746 | int res; | |
747 | ||
748 | res = ops->pre_action(substream, state); | |
749 | if (res < 0) | |
750 | return res; | |
751 | res = ops->do_action(substream, state); | |
752 | if (res == 0) | |
753 | ops->post_action(substream, state); | |
754 | else if (ops->undo_action) | |
755 | ops->undo_action(substream, state); | |
756 | return res; | |
757 | } | |
758 | ||
759 | /* | |
760 | * Note: call with stream lock | |
761 | */ | |
762 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 763 | struct snd_pcm_substream *substream, |
1da177e4 LT |
764 | int state) |
765 | { | |
766 | int res; | |
767 | ||
768 | if (snd_pcm_stream_linked(substream)) { | |
769 | if (!spin_trylock(&substream->group->lock)) { | |
770 | spin_unlock(&substream->self_group.lock); | |
771 | spin_lock(&substream->group->lock); | |
772 | spin_lock(&substream->self_group.lock); | |
773 | } | |
774 | res = snd_pcm_action_group(ops, substream, state, 1); | |
775 | spin_unlock(&substream->group->lock); | |
776 | } else { | |
777 | res = snd_pcm_action_single(ops, substream, state); | |
778 | } | |
779 | return res; | |
780 | } | |
781 | ||
782 | /* | |
783 | * Note: don't use any locks before | |
784 | */ | |
785 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 786 | struct snd_pcm_substream *substream, |
1da177e4 LT |
787 | int state) |
788 | { | |
789 | int res; | |
790 | ||
791 | read_lock_irq(&snd_pcm_link_rwlock); | |
792 | if (snd_pcm_stream_linked(substream)) { | |
793 | spin_lock(&substream->group->lock); | |
794 | spin_lock(&substream->self_group.lock); | |
795 | res = snd_pcm_action_group(ops, substream, state, 1); | |
796 | spin_unlock(&substream->self_group.lock); | |
797 | spin_unlock(&substream->group->lock); | |
798 | } else { | |
799 | spin_lock(&substream->self_group.lock); | |
800 | res = snd_pcm_action_single(ops, substream, state); | |
801 | spin_unlock(&substream->self_group.lock); | |
802 | } | |
803 | read_unlock_irq(&snd_pcm_link_rwlock); | |
804 | return res; | |
805 | } | |
806 | ||
807 | /* | |
808 | */ | |
809 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 810 | struct snd_pcm_substream *substream, |
1da177e4 LT |
811 | int state) |
812 | { | |
813 | int res; | |
814 | ||
815 | down_read(&snd_pcm_link_rwsem); | |
816 | if (snd_pcm_stream_linked(substream)) | |
817 | res = snd_pcm_action_group(ops, substream, state, 0); | |
818 | else | |
819 | res = snd_pcm_action_single(ops, substream, state); | |
820 | up_read(&snd_pcm_link_rwsem); | |
821 | return res; | |
822 | } | |
823 | ||
824 | /* | |
825 | * start callbacks | |
826 | */ | |
877211f5 | 827 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 828 | { |
877211f5 | 829 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
830 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
831 | return -EBADFD; | |
832 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
833 | !snd_pcm_playback_data(substream)) | |
834 | return -EPIPE; | |
835 | runtime->trigger_master = substream; | |
836 | return 0; | |
837 | } | |
838 | ||
877211f5 | 839 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
840 | { |
841 | if (substream->runtime->trigger_master != substream) | |
842 | return 0; | |
843 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
844 | } | |
845 | ||
877211f5 | 846 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
847 | { |
848 | if (substream->runtime->trigger_master == substream) | |
849 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
850 | } | |
851 | ||
877211f5 | 852 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 853 | { |
877211f5 | 854 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
855 | snd_pcm_trigger_tstamp(substream); |
856 | runtime->status->state = state; | |
857 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
858 | runtime->silence_size > 0) | |
859 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
860 | if (runtime->sleep_min) | |
861 | snd_pcm_tick_prepare(substream); | |
862 | if (substream->timer) | |
877211f5 TI |
863 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
864 | &runtime->trigger_tstamp); | |
1da177e4 LT |
865 | } |
866 | ||
867 | static struct action_ops snd_pcm_action_start = { | |
868 | .pre_action = snd_pcm_pre_start, | |
869 | .do_action = snd_pcm_do_start, | |
870 | .undo_action = snd_pcm_undo_start, | |
871 | .post_action = snd_pcm_post_start | |
872 | }; | |
873 | ||
874 | /** | |
875 | * snd_pcm_start | |
df8db936 | 876 | * @substream: the PCM substream instance |
1da177e4 LT |
877 | * |
878 | * Start all linked streams. | |
879 | */ | |
877211f5 | 880 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 881 | { |
877211f5 TI |
882 | return snd_pcm_action(&snd_pcm_action_start, substream, |
883 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
884 | } |
885 | ||
886 | /* | |
887 | * stop callbacks | |
888 | */ | |
877211f5 | 889 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 890 | { |
877211f5 | 891 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
892 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
893 | return -EBADFD; | |
894 | runtime->trigger_master = substream; | |
895 | return 0; | |
896 | } | |
897 | ||
877211f5 | 898 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
899 | { |
900 | if (substream->runtime->trigger_master == substream && | |
901 | snd_pcm_running(substream)) | |
902 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
903 | return 0; /* unconditonally stop all substreams */ | |
904 | } | |
905 | ||
877211f5 | 906 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 907 | { |
877211f5 | 908 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
909 | if (runtime->status->state != state) { |
910 | snd_pcm_trigger_tstamp(substream); | |
911 | if (substream->timer) | |
877211f5 TI |
912 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
913 | &runtime->trigger_tstamp); | |
1da177e4 LT |
914 | runtime->status->state = state; |
915 | snd_pcm_tick_set(substream, 0); | |
916 | } | |
917 | wake_up(&runtime->sleep); | |
918 | } | |
919 | ||
920 | static struct action_ops snd_pcm_action_stop = { | |
921 | .pre_action = snd_pcm_pre_stop, | |
922 | .do_action = snd_pcm_do_stop, | |
923 | .post_action = snd_pcm_post_stop | |
924 | }; | |
925 | ||
926 | /** | |
927 | * snd_pcm_stop | |
df8db936 TI |
928 | * @substream: the PCM substream instance |
929 | * @state: PCM state after stopping the stream | |
1da177e4 LT |
930 | * |
931 | * Try to stop all running streams in the substream group. | |
932 | * The state of each stream is changed to the given value after that unconditionally. | |
933 | */ | |
877211f5 | 934 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
935 | { |
936 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
937 | } | |
938 | ||
939 | /** | |
940 | * snd_pcm_drain_done | |
df8db936 | 941 | * @substream: the PCM substream |
1da177e4 LT |
942 | * |
943 | * Stop the DMA only when the given stream is playback. | |
944 | * The state is changed to SETUP. | |
945 | * Unlike snd_pcm_stop(), this affects only the given stream. | |
946 | */ | |
877211f5 | 947 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 948 | { |
877211f5 TI |
949 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
950 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
951 | } |
952 | ||
953 | /* | |
954 | * pause callbacks | |
955 | */ | |
877211f5 | 956 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 957 | { |
877211f5 | 958 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
959 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
960 | return -ENOSYS; | |
961 | if (push) { | |
962 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
963 | return -EBADFD; | |
964 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
965 | return -EBADFD; | |
966 | runtime->trigger_master = substream; | |
967 | return 0; | |
968 | } | |
969 | ||
877211f5 | 970 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
971 | { |
972 | if (substream->runtime->trigger_master != substream) | |
973 | return 0; | |
974 | return substream->ops->trigger(substream, | |
975 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
976 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
977 | } | |
978 | ||
877211f5 | 979 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
980 | { |
981 | if (substream->runtime->trigger_master == substream) | |
982 | substream->ops->trigger(substream, | |
983 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
984 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
985 | } | |
986 | ||
877211f5 | 987 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 988 | { |
877211f5 | 989 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
990 | snd_pcm_trigger_tstamp(substream); |
991 | if (push) { | |
992 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
993 | if (substream->timer) | |
877211f5 TI |
994 | snd_timer_notify(substream->timer, |
995 | SNDRV_TIMER_EVENT_MPAUSE, | |
996 | &runtime->trigger_tstamp); | |
1da177e4 LT |
997 | snd_pcm_tick_set(substream, 0); |
998 | wake_up(&runtime->sleep); | |
999 | } else { | |
1000 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1001 | if (runtime->sleep_min) | |
1002 | snd_pcm_tick_prepare(substream); | |
1003 | if (substream->timer) | |
877211f5 TI |
1004 | snd_timer_notify(substream->timer, |
1005 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1006 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1007 | } |
1008 | } | |
1009 | ||
1010 | static struct action_ops snd_pcm_action_pause = { | |
1011 | .pre_action = snd_pcm_pre_pause, | |
1012 | .do_action = snd_pcm_do_pause, | |
1013 | .undo_action = snd_pcm_undo_pause, | |
1014 | .post_action = snd_pcm_post_pause | |
1015 | }; | |
1016 | ||
1017 | /* | |
1018 | * Push/release the pause for all linked streams. | |
1019 | */ | |
877211f5 | 1020 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1021 | { |
1022 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1023 | } | |
1024 | ||
1025 | #ifdef CONFIG_PM | |
1026 | /* suspend */ | |
1027 | ||
877211f5 | 1028 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1029 | { |
877211f5 | 1030 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1031 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1032 | return -EBUSY; | |
1033 | runtime->trigger_master = substream; | |
1034 | return 0; | |
1035 | } | |
1036 | ||
877211f5 | 1037 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1038 | { |
877211f5 | 1039 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1040 | if (runtime->trigger_master != substream) |
1041 | return 0; | |
1042 | if (! snd_pcm_running(substream)) | |
1043 | return 0; | |
1044 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1045 | return 0; /* suspend unconditionally */ | |
1046 | } | |
1047 | ||
877211f5 | 1048 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1049 | { |
877211f5 | 1050 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1051 | snd_pcm_trigger_tstamp(substream); |
1052 | if (substream->timer) | |
877211f5 TI |
1053 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1054 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1055 | runtime->status->suspended_state = runtime->status->state; |
1056 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1057 | snd_pcm_tick_set(substream, 0); | |
1058 | wake_up(&runtime->sleep); | |
1059 | } | |
1060 | ||
1061 | static struct action_ops snd_pcm_action_suspend = { | |
1062 | .pre_action = snd_pcm_pre_suspend, | |
1063 | .do_action = snd_pcm_do_suspend, | |
1064 | .post_action = snd_pcm_post_suspend | |
1065 | }; | |
1066 | ||
1067 | /** | |
1068 | * snd_pcm_suspend | |
df8db936 | 1069 | * @substream: the PCM substream |
1da177e4 LT |
1070 | * |
1071 | * Trigger SUSPEND to all linked streams. | |
1072 | * After this call, all streams are changed to SUSPENDED state. | |
1073 | */ | |
877211f5 | 1074 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1075 | { |
1076 | int err; | |
1077 | unsigned long flags; | |
1078 | ||
603bf524 TI |
1079 | if (! substream) |
1080 | return 0; | |
1081 | ||
1da177e4 LT |
1082 | snd_pcm_stream_lock_irqsave(substream, flags); |
1083 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1084 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1085 | return err; | |
1086 | } | |
1087 | ||
1088 | /** | |
1089 | * snd_pcm_suspend_all | |
df8db936 | 1090 | * @pcm: the PCM instance |
1da177e4 LT |
1091 | * |
1092 | * Trigger SUSPEND to all substreams in the given pcm. | |
1093 | * After this call, all streams are changed to SUSPENDED state. | |
1094 | */ | |
877211f5 | 1095 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1096 | { |
877211f5 | 1097 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1098 | int stream, err = 0; |
1099 | ||
603bf524 TI |
1100 | if (! pcm) |
1101 | return 0; | |
1102 | ||
1da177e4 | 1103 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1104 | for (substream = pcm->streams[stream].substream; |
1105 | substream; substream = substream->next) { | |
1da177e4 LT |
1106 | /* FIXME: the open/close code should lock this as well */ |
1107 | if (substream->runtime == NULL) | |
1108 | continue; | |
1109 | err = snd_pcm_suspend(substream); | |
1110 | if (err < 0 && err != -EBUSY) | |
1111 | return err; | |
1112 | } | |
1113 | } | |
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | /* resume */ | |
1118 | ||
877211f5 | 1119 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1120 | { |
877211f5 | 1121 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1122 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1123 | return -ENOSYS; | |
1124 | runtime->trigger_master = substream; | |
1125 | return 0; | |
1126 | } | |
1127 | ||
877211f5 | 1128 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1129 | { |
877211f5 | 1130 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1131 | if (runtime->trigger_master != substream) |
1132 | return 0; | |
1133 | /* DMA not running previously? */ | |
1134 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1135 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1136 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1137 | return 0; | |
1138 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1139 | } | |
1140 | ||
877211f5 | 1141 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1142 | { |
1143 | if (substream->runtime->trigger_master == substream && | |
1144 | snd_pcm_running(substream)) | |
1145 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1146 | } | |
1147 | ||
877211f5 | 1148 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1149 | { |
877211f5 | 1150 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1151 | snd_pcm_trigger_tstamp(substream); |
1152 | if (substream->timer) | |
877211f5 TI |
1153 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1154 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1155 | runtime->status->state = runtime->status->suspended_state; |
1156 | if (runtime->sleep_min) | |
1157 | snd_pcm_tick_prepare(substream); | |
1158 | } | |
1159 | ||
1160 | static struct action_ops snd_pcm_action_resume = { | |
1161 | .pre_action = snd_pcm_pre_resume, | |
1162 | .do_action = snd_pcm_do_resume, | |
1163 | .undo_action = snd_pcm_undo_resume, | |
1164 | .post_action = snd_pcm_post_resume | |
1165 | }; | |
1166 | ||
877211f5 | 1167 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1168 | { |
877211f5 | 1169 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1170 | int res; |
1171 | ||
1172 | snd_power_lock(card); | |
1173 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile)) >= 0) | |
1174 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); | |
1175 | snd_power_unlock(card); | |
1176 | return res; | |
1177 | } | |
1178 | ||
1179 | #else | |
1180 | ||
877211f5 | 1181 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1182 | { |
1183 | return -ENOSYS; | |
1184 | } | |
1185 | ||
1186 | #endif /* CONFIG_PM */ | |
1187 | ||
1188 | /* | |
1189 | * xrun ioctl | |
1190 | * | |
1191 | * Change the RUNNING stream(s) to XRUN state. | |
1192 | */ | |
877211f5 | 1193 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1194 | { |
877211f5 TI |
1195 | struct snd_card *card = substream->pcm->card; |
1196 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1197 | int result; |
1198 | ||
1199 | snd_power_lock(card); | |
1200 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1201 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); | |
1202 | if (result < 0) | |
1203 | goto _unlock; | |
1204 | } | |
1205 | ||
1206 | snd_pcm_stream_lock_irq(substream); | |
1207 | switch (runtime->status->state) { | |
1208 | case SNDRV_PCM_STATE_XRUN: | |
1209 | result = 0; /* already there */ | |
1210 | break; | |
1211 | case SNDRV_PCM_STATE_RUNNING: | |
1212 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1213 | break; | |
1214 | default: | |
1215 | result = -EBADFD; | |
1216 | } | |
1217 | snd_pcm_stream_unlock_irq(substream); | |
1218 | _unlock: | |
1219 | snd_power_unlock(card); | |
1220 | return result; | |
1221 | } | |
1222 | ||
1223 | /* | |
1224 | * reset ioctl | |
1225 | */ | |
877211f5 | 1226 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1227 | { |
877211f5 | 1228 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1229 | switch (runtime->status->state) { |
1230 | case SNDRV_PCM_STATE_RUNNING: | |
1231 | case SNDRV_PCM_STATE_PREPARED: | |
1232 | case SNDRV_PCM_STATE_PAUSED: | |
1233 | case SNDRV_PCM_STATE_SUSPENDED: | |
1234 | return 0; | |
1235 | default: | |
1236 | return -EBADFD; | |
1237 | } | |
1238 | } | |
1239 | ||
877211f5 | 1240 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1241 | { |
877211f5 | 1242 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1243 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1244 | if (err < 0) | |
1245 | return err; | |
1246 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); | |
1247 | runtime->hw_ptr_base = 0; | |
877211f5 TI |
1248 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1249 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1250 | runtime->silence_start = runtime->status->hw_ptr; |
1251 | runtime->silence_filled = 0; | |
1252 | return 0; | |
1253 | } | |
1254 | ||
877211f5 | 1255 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1256 | { |
877211f5 | 1257 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1258 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1259 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1260 | runtime->silence_size > 0) | |
1261 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1262 | } | |
1263 | ||
1264 | static struct action_ops snd_pcm_action_reset = { | |
1265 | .pre_action = snd_pcm_pre_reset, | |
1266 | .do_action = snd_pcm_do_reset, | |
1267 | .post_action = snd_pcm_post_reset | |
1268 | }; | |
1269 | ||
877211f5 | 1270 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1271 | { |
1272 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1273 | } | |
1274 | ||
1275 | /* | |
1276 | * prepare ioctl | |
1277 | */ | |
877211f5 | 1278 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1279 | { |
877211f5 | 1280 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1281 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
1282 | return -EBADFD; | |
1283 | if (snd_pcm_running(substream)) | |
1284 | return -EBUSY; | |
1285 | return 0; | |
1286 | } | |
1287 | ||
877211f5 | 1288 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1289 | { |
1290 | int err; | |
1291 | err = substream->ops->prepare(substream); | |
1292 | if (err < 0) | |
1293 | return err; | |
1294 | return snd_pcm_do_reset(substream, 0); | |
1295 | } | |
1296 | ||
877211f5 | 1297 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1298 | { |
877211f5 | 1299 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1300 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1301 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1302 | } | |
1303 | ||
1304 | static struct action_ops snd_pcm_action_prepare = { | |
1305 | .pre_action = snd_pcm_pre_prepare, | |
1306 | .do_action = snd_pcm_do_prepare, | |
1307 | .post_action = snd_pcm_post_prepare | |
1308 | }; | |
1309 | ||
1310 | /** | |
1311 | * snd_pcm_prepare | |
df8db936 TI |
1312 | * @substream: the PCM substream instance |
1313 | * | |
1314 | * Prepare the PCM substream to be triggerable. | |
1da177e4 | 1315 | */ |
877211f5 | 1316 | int snd_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
1317 | { |
1318 | int res; | |
877211f5 | 1319 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1320 | |
1321 | snd_power_lock(card); | |
1322 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile)) >= 0) | |
1323 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, substream, 0); | |
1324 | snd_power_unlock(card); | |
1325 | return res; | |
1326 | } | |
1327 | ||
1328 | /* | |
1329 | * drain ioctl | |
1330 | */ | |
1331 | ||
877211f5 | 1332 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1333 | { |
1334 | if (substream->ffile->f_flags & O_NONBLOCK) | |
1335 | return -EAGAIN; | |
1336 | substream->runtime->trigger_master = substream; | |
1337 | return 0; | |
1338 | } | |
1339 | ||
877211f5 | 1340 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1341 | { |
877211f5 | 1342 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1343 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1344 | switch (runtime->status->state) { | |
1345 | case SNDRV_PCM_STATE_PREPARED: | |
1346 | /* start playback stream if possible */ | |
1347 | if (! snd_pcm_playback_empty(substream)) { | |
1348 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1349 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1350 | } | |
1351 | break; | |
1352 | case SNDRV_PCM_STATE_RUNNING: | |
1353 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1354 | break; | |
1355 | default: | |
1356 | break; | |
1357 | } | |
1358 | } else { | |
1359 | /* stop running stream */ | |
1360 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
1361 | int state = snd_pcm_capture_avail(runtime) > 0 ? | |
1362 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; | |
1363 | snd_pcm_do_stop(substream, state); | |
1364 | snd_pcm_post_stop(substream, state); | |
1365 | } | |
1366 | } | |
1367 | return 0; | |
1368 | } | |
1369 | ||
877211f5 | 1370 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1371 | { |
1372 | } | |
1373 | ||
1374 | static struct action_ops snd_pcm_action_drain_init = { | |
1375 | .pre_action = snd_pcm_pre_drain_init, | |
1376 | .do_action = snd_pcm_do_drain_init, | |
1377 | .post_action = snd_pcm_post_drain_init | |
1378 | }; | |
1379 | ||
1380 | struct drain_rec { | |
877211f5 | 1381 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1382 | wait_queue_t wait; |
1383 | snd_pcm_uframes_t stop_threshold; | |
1384 | }; | |
1385 | ||
877211f5 | 1386 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1387 | |
1388 | /* | |
1389 | * Drain the stream(s). | |
1390 | * When the substream is linked, sync until the draining of all playback streams | |
1391 | * is finished. | |
1392 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1393 | * (capture only) state. | |
1394 | */ | |
877211f5 | 1395 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1396 | { |
877211f5 TI |
1397 | struct snd_card *card; |
1398 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1399 | struct list_head *pos; |
1400 | int result = 0; | |
1401 | int i, num_drecs; | |
1402 | struct drain_rec *drec, drec_tmp, *d; | |
1403 | ||
1404 | snd_assert(substream != NULL, return -ENXIO); | |
1405 | card = substream->pcm->card; | |
1406 | runtime = substream->runtime; | |
1407 | ||
1408 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1409 | return -EBADFD; | |
1410 | ||
1da177e4 LT |
1411 | snd_power_lock(card); |
1412 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1413 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); | |
21cb2a2e TI |
1414 | if (result < 0) { |
1415 | snd_power_unlock(card); | |
1416 | return result; | |
1417 | } | |
1da177e4 LT |
1418 | } |
1419 | ||
1420 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1421 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1422 | if (snd_pcm_stream_linked(substream)) { |
1423 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1424 | if (! drec) { | |
21cb2a2e TI |
1425 | up_read(&snd_pcm_link_rwsem); |
1426 | snd_power_unlock(card); | |
1427 | return -ENOMEM; | |
1da177e4 LT |
1428 | } |
1429 | } else | |
1430 | drec = &drec_tmp; | |
1431 | ||
21cb2a2e | 1432 | /* count only playback streams */ |
1da177e4 LT |
1433 | num_drecs = 0; |
1434 | snd_pcm_group_for_each(pos, substream) { | |
877211f5 | 1435 | struct snd_pcm_substream *s = snd_pcm_group_substream_entry(pos); |
1da177e4 | 1436 | runtime = s->runtime; |
1da177e4 LT |
1437 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1438 | d = &drec[num_drecs++]; | |
1439 | d->substream = s; | |
1440 | init_waitqueue_entry(&d->wait, current); | |
1441 | add_wait_queue(&runtime->sleep, &d->wait); | |
1442 | /* stop_threshold fixup to avoid endless loop when | |
1443 | * stop_threshold > buffer_size | |
1444 | */ | |
1445 | d->stop_threshold = runtime->stop_threshold; | |
1446 | if (runtime->stop_threshold > runtime->buffer_size) | |
1447 | runtime->stop_threshold = runtime->buffer_size; | |
1448 | } | |
1449 | } | |
21cb2a2e | 1450 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1451 | if (! num_drecs) |
21cb2a2e TI |
1452 | goto _error; |
1453 | ||
1454 | snd_pcm_stream_lock_irq(substream); | |
1455 | /* resume pause */ | |
1456 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1457 | snd_pcm_pause(substream, 0); | |
1458 | ||
1459 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1460 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1461 | if (result < 0) { | |
1462 | snd_pcm_stream_unlock_irq(substream); | |
1463 | goto _error; | |
1464 | } | |
1da177e4 LT |
1465 | |
1466 | for (;;) { | |
1467 | long tout; | |
1468 | if (signal_pending(current)) { | |
1469 | result = -ERESTARTSYS; | |
1470 | break; | |
1471 | } | |
21cb2a2e TI |
1472 | /* all finished? */ |
1473 | for (i = 0; i < num_drecs; i++) { | |
1474 | runtime = drec[i].substream->runtime; | |
1475 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1476 | break; | |
1477 | } | |
1478 | if (i == num_drecs) | |
1479 | break; /* yes, all drained */ | |
1480 | ||
1da177e4 LT |
1481 | set_current_state(TASK_INTERRUPTIBLE); |
1482 | snd_pcm_stream_unlock_irq(substream); | |
1483 | snd_power_unlock(card); | |
1484 | tout = schedule_timeout(10 * HZ); | |
1485 | snd_power_lock(card); | |
1486 | snd_pcm_stream_lock_irq(substream); | |
1487 | if (tout == 0) { | |
1488 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1489 | result = -ESTRPIPE; | |
1490 | else { | |
1491 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1492 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1493 | result = -EIO; | |
1494 | } | |
1495 | break; | |
1496 | } | |
1da177e4 | 1497 | } |
21cb2a2e TI |
1498 | |
1499 | snd_pcm_stream_unlock_irq(substream); | |
1500 | ||
1501 | _error: | |
1da177e4 LT |
1502 | for (i = 0; i < num_drecs; i++) { |
1503 | d = &drec[i]; | |
1504 | runtime = d->substream->runtime; | |
1505 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1506 | runtime->stop_threshold = d->stop_threshold; | |
1507 | } | |
1508 | ||
1da177e4 LT |
1509 | if (drec != &drec_tmp) |
1510 | kfree(drec); | |
1da177e4 | 1511 | snd_power_unlock(card); |
1da177e4 LT |
1512 | |
1513 | return result; | |
1514 | } | |
1515 | ||
1516 | /* | |
1517 | * drop ioctl | |
1518 | * | |
1519 | * Immediately put all linked substreams into SETUP state. | |
1520 | */ | |
877211f5 | 1521 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1522 | { |
877211f5 TI |
1523 | struct snd_pcm_runtime *runtime; |
1524 | struct snd_card *card; | |
1da177e4 LT |
1525 | int result = 0; |
1526 | ||
1527 | snd_assert(substream != NULL, return -ENXIO); | |
1528 | runtime = substream->runtime; | |
1529 | card = substream->pcm->card; | |
1530 | ||
1531 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1532 | return -EBADFD; | |
1533 | ||
1534 | snd_power_lock(card); | |
1535 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
1536 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); | |
1537 | if (result < 0) | |
1538 | goto _unlock; | |
1539 | } | |
1540 | ||
1541 | snd_pcm_stream_lock_irq(substream); | |
1542 | /* resume pause */ | |
1543 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1544 | snd_pcm_pause(substream, 0); | |
1545 | ||
1546 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1547 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1548 | snd_pcm_stream_unlock_irq(substream); | |
1549 | _unlock: | |
1550 | snd_power_unlock(card); | |
1551 | return result; | |
1552 | } | |
1553 | ||
1554 | ||
1555 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1556 | static struct file *snd_pcm_file_fd(int fd) |
1557 | { | |
1558 | struct file *file; | |
1559 | struct inode *inode; | |
f87135f5 CL |
1560 | unsigned int minor; |
1561 | ||
1da177e4 LT |
1562 | file = fget(fd); |
1563 | if (!file) | |
1564 | return NULL; | |
1565 | inode = file->f_dentry->d_inode; | |
1566 | if (!S_ISCHR(inode->i_mode) || | |
1567 | imajor(inode) != snd_major) { | |
1568 | fput(file); | |
1569 | return NULL; | |
1570 | } | |
1571 | minor = iminor(inode); | |
f87135f5 CL |
1572 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1573 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1574 | fput(file); |
1575 | return NULL; | |
1576 | } | |
1577 | return file; | |
1578 | } | |
1579 | ||
1580 | /* | |
1581 | * PCM link handling | |
1582 | */ | |
877211f5 | 1583 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1584 | { |
1585 | int res = 0; | |
1586 | struct file *file; | |
877211f5 TI |
1587 | struct snd_pcm_file *pcm_file; |
1588 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1589 | |
1590 | file = snd_pcm_file_fd(fd); | |
1591 | if (!file) | |
1592 | return -EBADFD; | |
1593 | pcm_file = file->private_data; | |
1594 | substream1 = pcm_file->substream; | |
1595 | down_write(&snd_pcm_link_rwsem); | |
1596 | write_lock_irq(&snd_pcm_link_rwlock); | |
1597 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1598 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1599 | res = -EBADFD; | |
1600 | goto _end; | |
1601 | } | |
1602 | if (snd_pcm_stream_linked(substream1)) { | |
1603 | res = -EALREADY; | |
1604 | goto _end; | |
1605 | } | |
1606 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1607 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1608 | if (substream->group == NULL) { |
1609 | res = -ENOMEM; | |
1610 | goto _end; | |
1611 | } | |
1612 | spin_lock_init(&substream->group->lock); | |
1613 | INIT_LIST_HEAD(&substream->group->substreams); | |
1614 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1615 | substream->group->count = 1; | |
1616 | } | |
1617 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1618 | substream->group->count++; | |
1619 | substream1->group = substream->group; | |
1620 | _end: | |
1621 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1622 | up_write(&snd_pcm_link_rwsem); | |
1623 | fput(file); | |
1624 | return res; | |
1625 | } | |
1626 | ||
877211f5 | 1627 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1628 | { |
1629 | substream->group = &substream->self_group; | |
1630 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1631 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1632 | } | |
1633 | ||
877211f5 | 1634 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 LT |
1635 | { |
1636 | struct list_head *pos; | |
1637 | int res = 0; | |
1638 | ||
1639 | down_write(&snd_pcm_link_rwsem); | |
1640 | write_lock_irq(&snd_pcm_link_rwlock); | |
1641 | if (!snd_pcm_stream_linked(substream)) { | |
1642 | res = -EALREADY; | |
1643 | goto _end; | |
1644 | } | |
1645 | list_del(&substream->link_list); | |
1646 | substream->group->count--; | |
1647 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
1648 | snd_pcm_group_for_each(pos, substream) { | |
1649 | relink_to_local(snd_pcm_group_substream_entry(pos)); | |
1650 | break; | |
1651 | } | |
1652 | kfree(substream->group); | |
1653 | } | |
1654 | relink_to_local(substream); | |
1655 | _end: | |
1656 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1657 | up_write(&snd_pcm_link_rwsem); | |
1658 | return res; | |
1659 | } | |
1660 | ||
1661 | /* | |
1662 | * hw configurator | |
1663 | */ | |
877211f5 TI |
1664 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
1665 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1666 | { |
877211f5 | 1667 | struct snd_interval t; |
1da177e4 LT |
1668 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
1669 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1670 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1671 | } | |
1672 | ||
877211f5 TI |
1673 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
1674 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1675 | { |
877211f5 | 1676 | struct snd_interval t; |
1da177e4 LT |
1677 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
1678 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1679 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1680 | } | |
1681 | ||
877211f5 TI |
1682 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1683 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1684 | { |
877211f5 | 1685 | struct snd_interval t; |
1da177e4 LT |
1686 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1687 | hw_param_interval_c(params, rule->deps[1]), | |
1688 | (unsigned long) rule->private, &t); | |
1689 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1690 | } | |
1691 | ||
877211f5 TI |
1692 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1693 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1694 | { |
877211f5 | 1695 | struct snd_interval t; |
1da177e4 LT |
1696 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1697 | (unsigned long) rule->private, | |
1698 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1699 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1700 | } | |
1701 | ||
877211f5 TI |
1702 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1703 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1704 | { |
1705 | unsigned int k; | |
877211f5 TI |
1706 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1707 | struct snd_mask m; | |
1708 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1709 | snd_mask_any(&m); |
1710 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1711 | int bits; | |
1712 | if (! snd_mask_test(mask, k)) | |
1713 | continue; | |
1714 | bits = snd_pcm_format_physical_width(k); | |
1715 | if (bits <= 0) | |
1716 | continue; /* ignore invalid formats */ | |
1717 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1718 | snd_mask_reset(&m, k); | |
1719 | } | |
1720 | return snd_mask_refine(mask, &m); | |
1721 | } | |
1722 | ||
877211f5 TI |
1723 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1724 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1725 | { |
877211f5 | 1726 | struct snd_interval t; |
1da177e4 LT |
1727 | unsigned int k; |
1728 | t.min = UINT_MAX; | |
1729 | t.max = 0; | |
1730 | t.openmin = 0; | |
1731 | t.openmax = 0; | |
1732 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1733 | int bits; | |
1734 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1735 | continue; | |
1736 | bits = snd_pcm_format_physical_width(k); | |
1737 | if (bits <= 0) | |
1738 | continue; /* ignore invalid formats */ | |
1739 | if (t.min > (unsigned)bits) | |
1740 | t.min = bits; | |
1741 | if (t.max < (unsigned)bits) | |
1742 | t.max = bits; | |
1743 | } | |
1744 | t.integer = 1; | |
1745 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1746 | } | |
1747 | ||
1748 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1749 | #error "Change this table" | |
1750 | #endif | |
1751 | ||
1752 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1753 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1754 | ||
877211f5 TI |
1755 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1756 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1757 | { |
877211f5 | 1758 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 LT |
1759 | return snd_interval_list(hw_param_interval(params, rule->var), |
1760 | ARRAY_SIZE(rates), rates, hw->rates); | |
1761 | } | |
1762 | ||
877211f5 TI |
1763 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1764 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1765 | { |
877211f5 TI |
1766 | struct snd_interval t; |
1767 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1768 | t.min = 0; |
1769 | t.max = substream->buffer_bytes_max; | |
1770 | t.openmin = 0; | |
1771 | t.openmax = 0; | |
1772 | t.integer = 1; | |
1773 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1774 | } | |
1775 | ||
877211f5 | 1776 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1777 | { |
877211f5 TI |
1778 | struct snd_pcm_runtime *runtime = substream->runtime; |
1779 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1780 | int k, err; |
1781 | ||
1782 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1783 | snd_mask_any(constrs_mask(constrs, k)); | |
1784 | } | |
1785 | ||
1786 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1787 | snd_interval_any(constrs_interval(constrs, k)); | |
1788 | } | |
1789 | ||
1790 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1791 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1792 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1793 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1794 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1795 | ||
1796 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1797 | snd_pcm_hw_rule_format, NULL, | |
1798 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1799 | if (err < 0) | |
1800 | return err; | |
1801 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1802 | snd_pcm_hw_rule_sample_bits, NULL, | |
1803 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1804 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1805 | if (err < 0) | |
1806 | return err; | |
1807 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1808 | snd_pcm_hw_rule_div, NULL, | |
1809 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1810 | if (err < 0) | |
1811 | return err; | |
1812 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1813 | snd_pcm_hw_rule_mul, NULL, | |
1814 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1815 | if (err < 0) | |
1816 | return err; | |
1817 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1818 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1819 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1820 | if (err < 0) | |
1821 | return err; | |
1822 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1823 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1824 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1825 | if (err < 0) | |
1826 | return err; | |
1827 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1828 | snd_pcm_hw_rule_div, NULL, | |
1829 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1830 | if (err < 0) | |
1831 | return err; | |
1832 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1833 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1834 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1835 | if (err < 0) | |
1836 | return err; | |
1837 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1838 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1839 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1840 | if (err < 0) | |
1841 | return err; | |
1842 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1843 | snd_pcm_hw_rule_div, NULL, | |
1844 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1845 | if (err < 0) | |
1846 | return err; | |
1847 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1848 | snd_pcm_hw_rule_div, NULL, | |
1849 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1850 | if (err < 0) | |
1851 | return err; | |
1852 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1853 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1854 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1855 | if (err < 0) | |
1856 | return err; | |
1857 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1858 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1859 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1860 | if (err < 0) | |
1861 | return err; | |
1862 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1863 | snd_pcm_hw_rule_mul, NULL, | |
1864 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1865 | if (err < 0) | |
1866 | return err; | |
1867 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1868 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1869 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1870 | if (err < 0) | |
1871 | return err; | |
1872 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1873 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1874 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1875 | if (err < 0) | |
1876 | return err; | |
1877 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1878 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1879 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1880 | if (err < 0) | |
1881 | return err; | |
1882 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1883 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1884 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1885 | if (err < 0) | |
1886 | return err; | |
1887 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1888 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1889 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1890 | if (err < 0) | |
1891 | return err; | |
1892 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1893 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1894 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1895 | if (err < 0) | |
1896 | return err; | |
1897 | return 0; | |
1898 | } | |
1899 | ||
877211f5 | 1900 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1901 | { |
877211f5 TI |
1902 | struct snd_pcm_runtime *runtime = substream->runtime; |
1903 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1904 | int err; |
1905 | unsigned int mask = 0; | |
1906 | ||
1907 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1908 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1909 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1910 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1911 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1912 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1913 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1914 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1915 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1916 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1917 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1918 | } | |
1919 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
1920 | snd_assert(err >= 0, return -EINVAL); | |
1921 | ||
1922 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
1923 | snd_assert(err >= 0, return -EINVAL); | |
1924 | ||
1925 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
1926 | snd_assert(err >= 0, return -EINVAL); | |
1927 | ||
1928 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1929 | hw->channels_min, hw->channels_max); | |
1930 | snd_assert(err >= 0, return -EINVAL); | |
1931 | ||
1932 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1933 | hw->rate_min, hw->rate_max); | |
1934 | snd_assert(err >= 0, return -EINVAL); | |
1935 | ||
1936 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1937 | hw->period_bytes_min, hw->period_bytes_max); | |
1938 | snd_assert(err >= 0, return -EINVAL); | |
1939 | ||
1940 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1941 | hw->periods_min, hw->periods_max); | |
1942 | snd_assert(err >= 0, return -EINVAL); | |
1943 | ||
1944 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1945 | hw->period_bytes_min, hw->buffer_bytes_max); | |
1946 | snd_assert(err >= 0, return -EINVAL); | |
1947 | ||
1948 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1949 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1950 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1951 | if (err < 0) | |
1952 | return err; | |
1953 | ||
1954 | /* FIXME: remove */ | |
1955 | if (runtime->dma_bytes) { | |
1956 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
1957 | snd_assert(err >= 0, return -EINVAL); | |
1958 | } | |
1959 | ||
1960 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1961 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1962 | snd_pcm_hw_rule_rate, hw, | |
1963 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1964 | if (err < 0) | |
1965 | return err; | |
1966 | } | |
1967 | ||
1968 | /* FIXME: this belong to lowlevel */ | |
1969 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME, | |
1970 | 1000000 / HZ, 1000000 / HZ); | |
1971 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
1972 | ||
1973 | return 0; | |
1974 | } | |
1975 | ||
877211f5 TI |
1976 | static void snd_pcm_add_file(struct snd_pcm_str *str, |
1977 | struct snd_pcm_file *pcm_file) | |
1da177e4 LT |
1978 | { |
1979 | pcm_file->next = str->files; | |
1980 | str->files = pcm_file; | |
1981 | } | |
1982 | ||
877211f5 TI |
1983 | static void snd_pcm_remove_file(struct snd_pcm_str *str, |
1984 | struct snd_pcm_file *pcm_file) | |
1da177e4 | 1985 | { |
877211f5 | 1986 | struct snd_pcm_file * pcm_file1; |
1da177e4 LT |
1987 | if (str->files == pcm_file) { |
1988 | str->files = pcm_file->next; | |
1989 | } else { | |
1990 | pcm_file1 = str->files; | |
1991 | while (pcm_file1 && pcm_file1->next != pcm_file) | |
1992 | pcm_file1 = pcm_file1->next; | |
1993 | if (pcm_file1 != NULL) | |
1994 | pcm_file1->next = pcm_file->next; | |
1995 | } | |
1996 | } | |
1997 | ||
877211f5 | 1998 | static int snd_pcm_release_file(struct snd_pcm_file * pcm_file) |
1da177e4 | 1999 | { |
877211f5 TI |
2000 | struct snd_pcm_substream *substream; |
2001 | struct snd_pcm_runtime *runtime; | |
2002 | struct snd_pcm_str * str; | |
1da177e4 LT |
2003 | |
2004 | snd_assert(pcm_file != NULL, return -ENXIO); | |
2005 | substream = pcm_file->substream; | |
2006 | snd_assert(substream != NULL, return -ENXIO); | |
2007 | runtime = substream->runtime; | |
2008 | str = substream->pstr; | |
2009 | snd_pcm_unlink(substream); | |
443feb88 | 2010 | if (substream->ffile != NULL) { |
1da177e4 LT |
2011 | if (substream->ops->hw_free != NULL) |
2012 | substream->ops->hw_free(substream); | |
2013 | substream->ops->close(substream); | |
443feb88 | 2014 | substream->ffile = NULL; |
1da177e4 | 2015 | } |
1da177e4 LT |
2016 | snd_pcm_remove_file(str, pcm_file); |
2017 | snd_pcm_release_substream(substream); | |
2018 | kfree(pcm_file); | |
2019 | return 0; | |
2020 | } | |
2021 | ||
2022 | static int snd_pcm_open_file(struct file *file, | |
877211f5 | 2023 | struct snd_pcm *pcm, |
1da177e4 | 2024 | int stream, |
877211f5 | 2025 | struct snd_pcm_file **rpcm_file) |
1da177e4 LT |
2026 | { |
2027 | int err = 0; | |
877211f5 TI |
2028 | struct snd_pcm_file *pcm_file; |
2029 | struct snd_pcm_substream *substream; | |
2030 | struct snd_pcm_str *str; | |
1da177e4 LT |
2031 | |
2032 | snd_assert(rpcm_file != NULL, return -EINVAL); | |
2033 | *rpcm_file = NULL; | |
2034 | ||
ca2c0966 | 2035 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
1da177e4 LT |
2036 | if (pcm_file == NULL) { |
2037 | return -ENOMEM; | |
2038 | } | |
2039 | ||
2040 | if ((err = snd_pcm_open_substream(pcm, stream, &substream)) < 0) { | |
2041 | kfree(pcm_file); | |
2042 | return err; | |
2043 | } | |
2044 | ||
2045 | str = substream->pstr; | |
2046 | substream->file = pcm_file; | |
2047 | substream->no_mmap_ctrl = 0; | |
2048 | ||
2049 | pcm_file->substream = substream; | |
2050 | ||
2051 | snd_pcm_add_file(str, pcm_file); | |
2052 | ||
2053 | err = snd_pcm_hw_constraints_init(substream); | |
2054 | if (err < 0) { | |
2055 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2056 | snd_pcm_release_file(pcm_file); | |
2057 | return err; | |
2058 | } | |
2059 | ||
2060 | if ((err = substream->ops->open(substream)) < 0) { | |
2061 | snd_pcm_release_file(pcm_file); | |
2062 | return err; | |
2063 | } | |
443feb88 | 2064 | substream->ffile = file; |
1da177e4 LT |
2065 | |
2066 | err = snd_pcm_hw_constraints_complete(substream); | |
2067 | if (err < 0) { | |
2068 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
1da177e4 LT |
2069 | snd_pcm_release_file(pcm_file); |
2070 | return err; | |
2071 | } | |
2072 | ||
1da177e4 LT |
2073 | file->private_data = pcm_file; |
2074 | *rpcm_file = pcm_file; | |
2075 | return 0; | |
2076 | } | |
2077 | ||
f87135f5 CL |
2078 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2079 | { | |
2080 | struct snd_pcm *pcm; | |
2081 | ||
2082 | pcm = snd_lookup_minor_data(iminor(inode), | |
2083 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2084 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2085 | } | |
2086 | ||
2087 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2088 | { |
877211f5 | 2089 | struct snd_pcm *pcm; |
f87135f5 CL |
2090 | |
2091 | pcm = snd_lookup_minor_data(iminor(inode), | |
2092 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2093 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2094 | } | |
2095 | ||
2096 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2097 | { | |
2098 | int err; | |
877211f5 | 2099 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2100 | wait_queue_t wait; |
2101 | ||
1da177e4 LT |
2102 | if (pcm == NULL) { |
2103 | err = -ENODEV; | |
2104 | goto __error1; | |
2105 | } | |
2106 | err = snd_card_file_add(pcm->card, file); | |
2107 | if (err < 0) | |
2108 | goto __error1; | |
2109 | if (!try_module_get(pcm->card->module)) { | |
2110 | err = -EFAULT; | |
2111 | goto __error2; | |
2112 | } | |
2113 | init_waitqueue_entry(&wait, current); | |
2114 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2115 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2116 | while (1) { |
f87135f5 | 2117 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2118 | if (err >= 0) |
2119 | break; | |
2120 | if (err == -EAGAIN) { | |
2121 | if (file->f_flags & O_NONBLOCK) { | |
2122 | err = -EBUSY; | |
2123 | break; | |
2124 | } | |
2125 | } else | |
2126 | break; | |
2127 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2128 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2129 | schedule(); |
1a60d4c5 | 2130 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2131 | if (signal_pending(current)) { |
2132 | err = -ERESTARTSYS; | |
2133 | break; | |
2134 | } | |
2135 | } | |
2136 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2137 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2138 | if (err < 0) |
2139 | goto __error; | |
2140 | return err; | |
2141 | ||
2142 | __error: | |
2143 | module_put(pcm->card->module); | |
2144 | __error2: | |
2145 | snd_card_file_remove(pcm->card, file); | |
2146 | __error1: | |
2147 | return err; | |
2148 | } | |
2149 | ||
2150 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2151 | { | |
877211f5 TI |
2152 | struct snd_pcm *pcm; |
2153 | struct snd_pcm_substream *substream; | |
2154 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2155 | |
2156 | pcm_file = file->private_data; | |
2157 | substream = pcm_file->substream; | |
2158 | snd_assert(substream != NULL, return -ENXIO); | |
2159 | snd_assert(!atomic_read(&substream->runtime->mmap_count), ); | |
2160 | pcm = substream->pcm; | |
2161 | snd_pcm_drop(substream); | |
2162 | fasync_helper(-1, file, 0, &substream->runtime->fasync); | |
1a60d4c5 | 2163 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2164 | snd_pcm_release_file(pcm_file); |
1a60d4c5 | 2165 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2166 | wake_up(&pcm->open_wait); |
2167 | module_put(pcm->card->module); | |
2168 | snd_card_file_remove(pcm->card, file); | |
2169 | return 0; | |
2170 | } | |
2171 | ||
877211f5 TI |
2172 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2173 | snd_pcm_uframes_t frames) | |
1da177e4 | 2174 | { |
877211f5 | 2175 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2176 | snd_pcm_sframes_t appl_ptr; |
2177 | snd_pcm_sframes_t ret; | |
2178 | snd_pcm_sframes_t hw_avail; | |
2179 | ||
2180 | if (frames == 0) | |
2181 | return 0; | |
2182 | ||
2183 | snd_pcm_stream_lock_irq(substream); | |
2184 | switch (runtime->status->state) { | |
2185 | case SNDRV_PCM_STATE_PREPARED: | |
2186 | break; | |
2187 | case SNDRV_PCM_STATE_DRAINING: | |
2188 | case SNDRV_PCM_STATE_RUNNING: | |
2189 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2190 | break; | |
2191 | /* Fall through */ | |
2192 | case SNDRV_PCM_STATE_XRUN: | |
2193 | ret = -EPIPE; | |
2194 | goto __end; | |
2195 | default: | |
2196 | ret = -EBADFD; | |
2197 | goto __end; | |
2198 | } | |
2199 | ||
2200 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2201 | if (hw_avail <= 0) { | |
2202 | ret = 0; | |
2203 | goto __end; | |
2204 | } | |
2205 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2206 | frames = hw_avail; | |
2207 | else | |
2208 | frames -= frames % runtime->xfer_align; | |
2209 | appl_ptr = runtime->control->appl_ptr - frames; | |
2210 | if (appl_ptr < 0) | |
2211 | appl_ptr += runtime->boundary; | |
2212 | runtime->control->appl_ptr = appl_ptr; | |
2213 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2214 | runtime->sleep_min) | |
2215 | snd_pcm_tick_prepare(substream); | |
2216 | ret = frames; | |
2217 | __end: | |
2218 | snd_pcm_stream_unlock_irq(substream); | |
2219 | return ret; | |
2220 | } | |
2221 | ||
877211f5 TI |
2222 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2223 | snd_pcm_uframes_t frames) | |
1da177e4 | 2224 | { |
877211f5 | 2225 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2226 | snd_pcm_sframes_t appl_ptr; |
2227 | snd_pcm_sframes_t ret; | |
2228 | snd_pcm_sframes_t hw_avail; | |
2229 | ||
2230 | if (frames == 0) | |
2231 | return 0; | |
2232 | ||
2233 | snd_pcm_stream_lock_irq(substream); | |
2234 | switch (runtime->status->state) { | |
2235 | case SNDRV_PCM_STATE_PREPARED: | |
2236 | case SNDRV_PCM_STATE_DRAINING: | |
2237 | break; | |
2238 | case SNDRV_PCM_STATE_RUNNING: | |
2239 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2240 | break; | |
2241 | /* Fall through */ | |
2242 | case SNDRV_PCM_STATE_XRUN: | |
2243 | ret = -EPIPE; | |
2244 | goto __end; | |
2245 | default: | |
2246 | ret = -EBADFD; | |
2247 | goto __end; | |
2248 | } | |
2249 | ||
2250 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2251 | if (hw_avail <= 0) { | |
2252 | ret = 0; | |
2253 | goto __end; | |
2254 | } | |
2255 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2256 | frames = hw_avail; | |
2257 | else | |
2258 | frames -= frames % runtime->xfer_align; | |
2259 | appl_ptr = runtime->control->appl_ptr - frames; | |
2260 | if (appl_ptr < 0) | |
2261 | appl_ptr += runtime->boundary; | |
2262 | runtime->control->appl_ptr = appl_ptr; | |
2263 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2264 | runtime->sleep_min) | |
2265 | snd_pcm_tick_prepare(substream); | |
2266 | ret = frames; | |
2267 | __end: | |
2268 | snd_pcm_stream_unlock_irq(substream); | |
2269 | return ret; | |
2270 | } | |
2271 | ||
877211f5 TI |
2272 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2273 | snd_pcm_uframes_t frames) | |
1da177e4 | 2274 | { |
877211f5 | 2275 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2276 | snd_pcm_sframes_t appl_ptr; |
2277 | snd_pcm_sframes_t ret; | |
2278 | snd_pcm_sframes_t avail; | |
2279 | ||
2280 | if (frames == 0) | |
2281 | return 0; | |
2282 | ||
2283 | snd_pcm_stream_lock_irq(substream); | |
2284 | switch (runtime->status->state) { | |
2285 | case SNDRV_PCM_STATE_PREPARED: | |
2286 | case SNDRV_PCM_STATE_PAUSED: | |
2287 | break; | |
2288 | case SNDRV_PCM_STATE_DRAINING: | |
2289 | case SNDRV_PCM_STATE_RUNNING: | |
2290 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2291 | break; | |
2292 | /* Fall through */ | |
2293 | case SNDRV_PCM_STATE_XRUN: | |
2294 | ret = -EPIPE; | |
2295 | goto __end; | |
2296 | default: | |
2297 | ret = -EBADFD; | |
2298 | goto __end; | |
2299 | } | |
2300 | ||
2301 | avail = snd_pcm_playback_avail(runtime); | |
2302 | if (avail <= 0) { | |
2303 | ret = 0; | |
2304 | goto __end; | |
2305 | } | |
2306 | if (frames > (snd_pcm_uframes_t)avail) | |
2307 | frames = avail; | |
2308 | else | |
2309 | frames -= frames % runtime->xfer_align; | |
2310 | appl_ptr = runtime->control->appl_ptr + frames; | |
2311 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2312 | appl_ptr -= runtime->boundary; | |
2313 | runtime->control->appl_ptr = appl_ptr; | |
2314 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2315 | runtime->sleep_min) | |
2316 | snd_pcm_tick_prepare(substream); | |
2317 | ret = frames; | |
2318 | __end: | |
2319 | snd_pcm_stream_unlock_irq(substream); | |
2320 | return ret; | |
2321 | } | |
2322 | ||
877211f5 TI |
2323 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2324 | snd_pcm_uframes_t frames) | |
1da177e4 | 2325 | { |
877211f5 | 2326 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2327 | snd_pcm_sframes_t appl_ptr; |
2328 | snd_pcm_sframes_t ret; | |
2329 | snd_pcm_sframes_t avail; | |
2330 | ||
2331 | if (frames == 0) | |
2332 | return 0; | |
2333 | ||
2334 | snd_pcm_stream_lock_irq(substream); | |
2335 | switch (runtime->status->state) { | |
2336 | case SNDRV_PCM_STATE_PREPARED: | |
2337 | case SNDRV_PCM_STATE_DRAINING: | |
2338 | case SNDRV_PCM_STATE_PAUSED: | |
2339 | break; | |
2340 | case SNDRV_PCM_STATE_RUNNING: | |
2341 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2342 | break; | |
2343 | /* Fall through */ | |
2344 | case SNDRV_PCM_STATE_XRUN: | |
2345 | ret = -EPIPE; | |
2346 | goto __end; | |
2347 | default: | |
2348 | ret = -EBADFD; | |
2349 | goto __end; | |
2350 | } | |
2351 | ||
2352 | avail = snd_pcm_capture_avail(runtime); | |
2353 | if (avail <= 0) { | |
2354 | ret = 0; | |
2355 | goto __end; | |
2356 | } | |
2357 | if (frames > (snd_pcm_uframes_t)avail) | |
2358 | frames = avail; | |
2359 | else | |
2360 | frames -= frames % runtime->xfer_align; | |
2361 | appl_ptr = runtime->control->appl_ptr + frames; | |
2362 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2363 | appl_ptr -= runtime->boundary; | |
2364 | runtime->control->appl_ptr = appl_ptr; | |
2365 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2366 | runtime->sleep_min) | |
2367 | snd_pcm_tick_prepare(substream); | |
2368 | ret = frames; | |
2369 | __end: | |
2370 | snd_pcm_stream_unlock_irq(substream); | |
2371 | return ret; | |
2372 | } | |
2373 | ||
877211f5 | 2374 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2375 | { |
877211f5 | 2376 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2377 | int err; |
2378 | ||
2379 | snd_pcm_stream_lock_irq(substream); | |
2380 | switch (runtime->status->state) { | |
2381 | case SNDRV_PCM_STATE_DRAINING: | |
2382 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2383 | goto __badfd; | |
2384 | case SNDRV_PCM_STATE_RUNNING: | |
2385 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2386 | break; | |
2387 | /* Fall through */ | |
2388 | case SNDRV_PCM_STATE_PREPARED: | |
2389 | case SNDRV_PCM_STATE_SUSPENDED: | |
2390 | err = 0; | |
2391 | break; | |
2392 | case SNDRV_PCM_STATE_XRUN: | |
2393 | err = -EPIPE; | |
2394 | break; | |
2395 | default: | |
2396 | __badfd: | |
2397 | err = -EBADFD; | |
2398 | break; | |
2399 | } | |
2400 | snd_pcm_stream_unlock_irq(substream); | |
2401 | return err; | |
2402 | } | |
2403 | ||
877211f5 TI |
2404 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2405 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2406 | { |
877211f5 | 2407 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2408 | int err; |
2409 | snd_pcm_sframes_t n = 0; | |
2410 | ||
2411 | snd_pcm_stream_lock_irq(substream); | |
2412 | switch (runtime->status->state) { | |
2413 | case SNDRV_PCM_STATE_DRAINING: | |
2414 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2415 | goto __badfd; | |
2416 | case SNDRV_PCM_STATE_RUNNING: | |
2417 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2418 | break; | |
2419 | /* Fall through */ | |
2420 | case SNDRV_PCM_STATE_PREPARED: | |
2421 | case SNDRV_PCM_STATE_SUSPENDED: | |
2422 | err = 0; | |
2423 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2424 | n = snd_pcm_playback_hw_avail(runtime); | |
2425 | else | |
2426 | n = snd_pcm_capture_avail(runtime); | |
2427 | break; | |
2428 | case SNDRV_PCM_STATE_XRUN: | |
2429 | err = -EPIPE; | |
2430 | break; | |
2431 | default: | |
2432 | __badfd: | |
2433 | err = -EBADFD; | |
2434 | break; | |
2435 | } | |
2436 | snd_pcm_stream_unlock_irq(substream); | |
2437 | if (!err) | |
2438 | if (put_user(n, res)) | |
2439 | err = -EFAULT; | |
2440 | return err; | |
2441 | } | |
2442 | ||
877211f5 TI |
2443 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2444 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2445 | { |
877211f5 TI |
2446 | struct snd_pcm_runtime *runtime = substream->runtime; |
2447 | struct snd_pcm_sync_ptr sync_ptr; | |
2448 | volatile struct snd_pcm_mmap_status *status; | |
2449 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2450 | int err; |
2451 | ||
2452 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2453 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2454 | return -EFAULT; | |
877211f5 | 2455 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2456 | return -EFAULT; |
2457 | status = runtime->status; | |
2458 | control = runtime->control; | |
2459 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2460 | err = snd_pcm_hwsync(substream); | |
2461 | if (err < 0) | |
2462 | return err; | |
2463 | } | |
2464 | snd_pcm_stream_lock_irq(substream); | |
2465 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2466 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2467 | else | |
2468 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2469 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2470 | control->avail_min = sync_ptr.c.control.avail_min; | |
2471 | else | |
2472 | sync_ptr.c.control.avail_min = control->avail_min; | |
2473 | sync_ptr.s.status.state = status->state; | |
2474 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2475 | sync_ptr.s.status.tstamp = status->tstamp; | |
2476 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2477 | snd_pcm_stream_unlock_irq(substream); | |
2478 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2479 | return -EFAULT; | |
2480 | return 0; | |
2481 | } | |
2482 | ||
877211f5 | 2483 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 | 2484 | unsigned int cmd, void __user *arg); |
877211f5 | 2485 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2486 | unsigned int cmd, void __user *arg); |
2487 | ||
877211f5 | 2488 | static int snd_pcm_common_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2489 | unsigned int cmd, void __user *arg) |
2490 | { | |
2491 | snd_assert(substream != NULL, return -ENXIO); | |
2492 | ||
2493 | switch (cmd) { | |
2494 | case SNDRV_PCM_IOCTL_PVERSION: | |
2495 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2496 | case SNDRV_PCM_IOCTL_INFO: | |
2497 | return snd_pcm_info_user(substream, arg); | |
07799e75 | 2498 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
1da177e4 | 2499 | return 0; |
1da177e4 LT |
2500 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2501 | return snd_pcm_hw_refine_user(substream, arg); | |
2502 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2503 | return snd_pcm_hw_params_user(substream, arg); | |
2504 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2505 | return snd_pcm_hw_free(substream); | |
2506 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2507 | return snd_pcm_sw_params_user(substream, arg); | |
2508 | case SNDRV_PCM_IOCTL_STATUS: | |
2509 | return snd_pcm_status_user(substream, arg); | |
2510 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2511 | return snd_pcm_channel_info_user(substream, arg); | |
2512 | case SNDRV_PCM_IOCTL_PREPARE: | |
2513 | return snd_pcm_prepare(substream); | |
2514 | case SNDRV_PCM_IOCTL_RESET: | |
2515 | return snd_pcm_reset(substream); | |
2516 | case SNDRV_PCM_IOCTL_START: | |
2517 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2518 | case SNDRV_PCM_IOCTL_LINK: | |
2519 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2520 | case SNDRV_PCM_IOCTL_UNLINK: | |
2521 | return snd_pcm_unlink(substream); | |
2522 | case SNDRV_PCM_IOCTL_RESUME: | |
2523 | return snd_pcm_resume(substream); | |
2524 | case SNDRV_PCM_IOCTL_XRUN: | |
2525 | return snd_pcm_xrun(substream); | |
2526 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2527 | return snd_pcm_hwsync(substream); | |
2528 | case SNDRV_PCM_IOCTL_DELAY: | |
2529 | return snd_pcm_delay(substream, arg); | |
2530 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2531 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2532 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2533 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2534 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2535 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2536 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2537 | #endif |
1da177e4 LT |
2538 | case SNDRV_PCM_IOCTL_DRAIN: |
2539 | return snd_pcm_drain(substream); | |
2540 | case SNDRV_PCM_IOCTL_DROP: | |
2541 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2542 | case SNDRV_PCM_IOCTL_PAUSE: |
2543 | { | |
2544 | int res; | |
2545 | snd_pcm_stream_lock_irq(substream); | |
2546 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2547 | snd_pcm_stream_unlock_irq(substream); | |
2548 | return res; | |
2549 | } | |
1da177e4 LT |
2550 | } |
2551 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2552 | return -ENOTTY; | |
2553 | } | |
2554 | ||
877211f5 | 2555 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2556 | unsigned int cmd, void __user *arg) |
2557 | { | |
2558 | snd_assert(substream != NULL, return -ENXIO); | |
2559 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); | |
2560 | switch (cmd) { | |
2561 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2562 | { | |
877211f5 TI |
2563 | struct snd_xferi xferi; |
2564 | struct snd_xferi __user *_xferi = arg; | |
2565 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2566 | snd_pcm_sframes_t result; |
2567 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2568 | return -EBADFD; | |
2569 | if (put_user(0, &_xferi->result)) | |
2570 | return -EFAULT; | |
2571 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2572 | return -EFAULT; | |
2573 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2574 | __put_user(result, &_xferi->result); | |
2575 | return result < 0 ? result : 0; | |
2576 | } | |
2577 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2578 | { | |
877211f5 TI |
2579 | struct snd_xfern xfern; |
2580 | struct snd_xfern __user *_xfern = arg; | |
2581 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2582 | void __user **bufs; |
2583 | snd_pcm_sframes_t result; | |
2584 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2585 | return -EBADFD; | |
2586 | if (runtime->channels > 128) | |
2587 | return -EINVAL; | |
2588 | if (put_user(0, &_xfern->result)) | |
2589 | return -EFAULT; | |
2590 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2591 | return -EFAULT; | |
2592 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2593 | if (bufs == NULL) | |
2594 | return -ENOMEM; | |
2595 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2596 | kfree(bufs); | |
2597 | return -EFAULT; | |
2598 | } | |
2599 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); | |
2600 | kfree(bufs); | |
2601 | __put_user(result, &_xfern->result); | |
2602 | return result < 0 ? result : 0; | |
2603 | } | |
2604 | case SNDRV_PCM_IOCTL_REWIND: | |
2605 | { | |
2606 | snd_pcm_uframes_t frames; | |
2607 | snd_pcm_uframes_t __user *_frames = arg; | |
2608 | snd_pcm_sframes_t result; | |
2609 | if (get_user(frames, _frames)) | |
2610 | return -EFAULT; | |
2611 | if (put_user(0, _frames)) | |
2612 | return -EFAULT; | |
2613 | result = snd_pcm_playback_rewind(substream, frames); | |
2614 | __put_user(result, _frames); | |
2615 | return result < 0 ? result : 0; | |
2616 | } | |
2617 | case SNDRV_PCM_IOCTL_FORWARD: | |
2618 | { | |
2619 | snd_pcm_uframes_t frames; | |
2620 | snd_pcm_uframes_t __user *_frames = arg; | |
2621 | snd_pcm_sframes_t result; | |
2622 | if (get_user(frames, _frames)) | |
2623 | return -EFAULT; | |
2624 | if (put_user(0, _frames)) | |
2625 | return -EFAULT; | |
2626 | result = snd_pcm_playback_forward(substream, frames); | |
2627 | __put_user(result, _frames); | |
2628 | return result < 0 ? result : 0; | |
2629 | } | |
1da177e4 LT |
2630 | } |
2631 | return snd_pcm_common_ioctl1(substream, cmd, arg); | |
2632 | } | |
2633 | ||
877211f5 | 2634 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2635 | unsigned int cmd, void __user *arg) |
2636 | { | |
2637 | snd_assert(substream != NULL, return -ENXIO); | |
2638 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); | |
2639 | switch (cmd) { | |
2640 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2641 | { | |
877211f5 TI |
2642 | struct snd_xferi xferi; |
2643 | struct snd_xferi __user *_xferi = arg; | |
2644 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2645 | snd_pcm_sframes_t result; |
2646 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2647 | return -EBADFD; | |
2648 | if (put_user(0, &_xferi->result)) | |
2649 | return -EFAULT; | |
2650 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2651 | return -EFAULT; | |
2652 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2653 | __put_user(result, &_xferi->result); | |
2654 | return result < 0 ? result : 0; | |
2655 | } | |
2656 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2657 | { | |
877211f5 TI |
2658 | struct snd_xfern xfern; |
2659 | struct snd_xfern __user *_xfern = arg; | |
2660 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2661 | void *bufs; |
2662 | snd_pcm_sframes_t result; | |
2663 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2664 | return -EBADFD; | |
2665 | if (runtime->channels > 128) | |
2666 | return -EINVAL; | |
2667 | if (put_user(0, &_xfern->result)) | |
2668 | return -EFAULT; | |
2669 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2670 | return -EFAULT; | |
2671 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2672 | if (bufs == NULL) | |
2673 | return -ENOMEM; | |
2674 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2675 | kfree(bufs); | |
2676 | return -EFAULT; | |
2677 | } | |
2678 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); | |
2679 | kfree(bufs); | |
2680 | __put_user(result, &_xfern->result); | |
2681 | return result < 0 ? result : 0; | |
2682 | } | |
2683 | case SNDRV_PCM_IOCTL_REWIND: | |
2684 | { | |
2685 | snd_pcm_uframes_t frames; | |
2686 | snd_pcm_uframes_t __user *_frames = arg; | |
2687 | snd_pcm_sframes_t result; | |
2688 | if (get_user(frames, _frames)) | |
2689 | return -EFAULT; | |
2690 | if (put_user(0, _frames)) | |
2691 | return -EFAULT; | |
2692 | result = snd_pcm_capture_rewind(substream, frames); | |
2693 | __put_user(result, _frames); | |
2694 | return result < 0 ? result : 0; | |
2695 | } | |
2696 | case SNDRV_PCM_IOCTL_FORWARD: | |
2697 | { | |
2698 | snd_pcm_uframes_t frames; | |
2699 | snd_pcm_uframes_t __user *_frames = arg; | |
2700 | snd_pcm_sframes_t result; | |
2701 | if (get_user(frames, _frames)) | |
2702 | return -EFAULT; | |
2703 | if (put_user(0, _frames)) | |
2704 | return -EFAULT; | |
2705 | result = snd_pcm_capture_forward(substream, frames); | |
2706 | __put_user(result, _frames); | |
2707 | return result < 0 ? result : 0; | |
2708 | } | |
2709 | } | |
2710 | return snd_pcm_common_ioctl1(substream, cmd, arg); | |
2711 | } | |
2712 | ||
877211f5 TI |
2713 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2714 | unsigned long arg) | |
1da177e4 | 2715 | { |
877211f5 | 2716 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2717 | |
2718 | pcm_file = file->private_data; | |
2719 | ||
2720 | if (((cmd >> 8) & 0xff) != 'A') | |
2721 | return -ENOTTY; | |
2722 | ||
2723 | return snd_pcm_playback_ioctl1(pcm_file->substream, cmd, (void __user *)arg); | |
2724 | } | |
2725 | ||
877211f5 TI |
2726 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2727 | unsigned long arg) | |
1da177e4 | 2728 | { |
877211f5 | 2729 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2730 | |
2731 | pcm_file = file->private_data; | |
2732 | ||
2733 | if (((cmd >> 8) & 0xff) != 'A') | |
2734 | return -ENOTTY; | |
2735 | ||
2736 | return snd_pcm_capture_ioctl1(pcm_file->substream, cmd, (void __user *)arg); | |
2737 | } | |
2738 | ||
877211f5 | 2739 | int snd_pcm_kernel_playback_ioctl(struct snd_pcm_substream *substream, |
1da177e4 LT |
2740 | unsigned int cmd, void *arg) |
2741 | { | |
2742 | mm_segment_t fs; | |
2743 | int result; | |
2744 | ||
2745 | fs = snd_enter_user(); | |
2746 | result = snd_pcm_playback_ioctl1(substream, cmd, (void __user *)arg); | |
2747 | snd_leave_user(fs); | |
2748 | return result; | |
2749 | } | |
2750 | ||
877211f5 | 2751 | int snd_pcm_kernel_capture_ioctl(struct snd_pcm_substream *substream, |
1da177e4 LT |
2752 | unsigned int cmd, void *arg) |
2753 | { | |
2754 | mm_segment_t fs; | |
2755 | int result; | |
2756 | ||
2757 | fs = snd_enter_user(); | |
2758 | result = snd_pcm_capture_ioctl1(substream, cmd, (void __user *)arg); | |
2759 | snd_leave_user(fs); | |
2760 | return result; | |
2761 | } | |
2762 | ||
877211f5 | 2763 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
1da177e4 LT |
2764 | unsigned int cmd, void *arg) |
2765 | { | |
2766 | switch (substream->stream) { | |
2767 | case SNDRV_PCM_STREAM_PLAYBACK: | |
2768 | return snd_pcm_kernel_playback_ioctl(substream, cmd, arg); | |
2769 | case SNDRV_PCM_STREAM_CAPTURE: | |
2770 | return snd_pcm_kernel_capture_ioctl(substream, cmd, arg); | |
2771 | default: | |
2772 | return -EINVAL; | |
2773 | } | |
2774 | } | |
2775 | ||
877211f5 TI |
2776 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2777 | loff_t * offset) | |
1da177e4 | 2778 | { |
877211f5 TI |
2779 | struct snd_pcm_file *pcm_file; |
2780 | struct snd_pcm_substream *substream; | |
2781 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2782 | snd_pcm_sframes_t result; |
2783 | ||
2784 | pcm_file = file->private_data; | |
2785 | substream = pcm_file->substream; | |
2786 | snd_assert(substream != NULL, return -ENXIO); | |
2787 | runtime = substream->runtime; | |
2788 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2789 | return -EBADFD; | |
2790 | if (!frame_aligned(runtime, count)) | |
2791 | return -EINVAL; | |
2792 | count = bytes_to_frames(runtime, count); | |
2793 | result = snd_pcm_lib_read(substream, buf, count); | |
2794 | if (result > 0) | |
2795 | result = frames_to_bytes(runtime, result); | |
2796 | return result; | |
2797 | } | |
2798 | ||
877211f5 TI |
2799 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2800 | size_t count, loff_t * offset) | |
1da177e4 | 2801 | { |
877211f5 TI |
2802 | struct snd_pcm_file *pcm_file; |
2803 | struct snd_pcm_substream *substream; | |
2804 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2805 | snd_pcm_sframes_t result; |
2806 | ||
2807 | pcm_file = file->private_data; | |
2808 | substream = pcm_file->substream; | |
2809 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2810 | runtime = substream->runtime; | |
2811 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2812 | result = -EBADFD; | |
2813 | goto end; | |
2814 | } | |
2815 | if (!frame_aligned(runtime, count)) { | |
2816 | result = -EINVAL; | |
2817 | goto end; | |
2818 | } | |
2819 | count = bytes_to_frames(runtime, count); | |
2820 | result = snd_pcm_lib_write(substream, buf, count); | |
2821 | if (result > 0) | |
2822 | result = frames_to_bytes(runtime, result); | |
2823 | end: | |
2824 | return result; | |
2825 | } | |
2826 | ||
2827 | static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector, | |
2828 | unsigned long count, loff_t * offset) | |
2829 | ||
2830 | { | |
877211f5 TI |
2831 | struct snd_pcm_file *pcm_file; |
2832 | struct snd_pcm_substream *substream; | |
2833 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2834 | snd_pcm_sframes_t result; |
2835 | unsigned long i; | |
2836 | void __user **bufs; | |
2837 | snd_pcm_uframes_t frames; | |
2838 | ||
2839 | pcm_file = file->private_data; | |
2840 | substream = pcm_file->substream; | |
2841 | snd_assert(substream != NULL, return -ENXIO); | |
2842 | runtime = substream->runtime; | |
2843 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2844 | return -EBADFD; | |
2845 | if (count > 1024 || count != runtime->channels) | |
2846 | return -EINVAL; | |
2847 | if (!frame_aligned(runtime, _vector->iov_len)) | |
2848 | return -EINVAL; | |
2849 | frames = bytes_to_samples(runtime, _vector->iov_len); | |
2850 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); | |
2851 | if (bufs == NULL) | |
2852 | return -ENOMEM; | |
2853 | for (i = 0; i < count; ++i) | |
2854 | bufs[i] = _vector[i].iov_base; | |
2855 | result = snd_pcm_lib_readv(substream, bufs, frames); | |
2856 | if (result > 0) | |
2857 | result = frames_to_bytes(runtime, result); | |
2858 | kfree(bufs); | |
2859 | return result; | |
2860 | } | |
2861 | ||
2862 | static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector, | |
2863 | unsigned long count, loff_t * offset) | |
2864 | { | |
877211f5 TI |
2865 | struct snd_pcm_file *pcm_file; |
2866 | struct snd_pcm_substream *substream; | |
2867 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2868 | snd_pcm_sframes_t result; |
2869 | unsigned long i; | |
2870 | void __user **bufs; | |
2871 | snd_pcm_uframes_t frames; | |
2872 | ||
2873 | pcm_file = file->private_data; | |
2874 | substream = pcm_file->substream; | |
2875 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2876 | runtime = substream->runtime; | |
2877 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2878 | result = -EBADFD; | |
2879 | goto end; | |
2880 | } | |
2881 | if (count > 128 || count != runtime->channels || | |
2882 | !frame_aligned(runtime, _vector->iov_len)) { | |
2883 | result = -EINVAL; | |
2884 | goto end; | |
2885 | } | |
2886 | frames = bytes_to_samples(runtime, _vector->iov_len); | |
2887 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); | |
2888 | if (bufs == NULL) | |
2889 | return -ENOMEM; | |
2890 | for (i = 0; i < count; ++i) | |
2891 | bufs[i] = _vector[i].iov_base; | |
2892 | result = snd_pcm_lib_writev(substream, bufs, frames); | |
2893 | if (result > 0) | |
2894 | result = frames_to_bytes(runtime, result); | |
2895 | kfree(bufs); | |
2896 | end: | |
2897 | return result; | |
2898 | } | |
2899 | ||
2900 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2901 | { | |
877211f5 TI |
2902 | struct snd_pcm_file *pcm_file; |
2903 | struct snd_pcm_substream *substream; | |
2904 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2905 | unsigned int mask; |
2906 | snd_pcm_uframes_t avail; | |
2907 | ||
2908 | pcm_file = file->private_data; | |
2909 | ||
2910 | substream = pcm_file->substream; | |
2911 | snd_assert(substream != NULL, return -ENXIO); | |
2912 | runtime = substream->runtime; | |
2913 | ||
2914 | poll_wait(file, &runtime->sleep, wait); | |
2915 | ||
2916 | snd_pcm_stream_lock_irq(substream); | |
2917 | avail = snd_pcm_playback_avail(runtime); | |
2918 | switch (runtime->status->state) { | |
2919 | case SNDRV_PCM_STATE_RUNNING: | |
2920 | case SNDRV_PCM_STATE_PREPARED: | |
2921 | case SNDRV_PCM_STATE_PAUSED: | |
2922 | if (avail >= runtime->control->avail_min) { | |
2923 | mask = POLLOUT | POLLWRNORM; | |
2924 | break; | |
2925 | } | |
2926 | /* Fall through */ | |
2927 | case SNDRV_PCM_STATE_DRAINING: | |
2928 | mask = 0; | |
2929 | break; | |
2930 | default: | |
2931 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2932 | break; | |
2933 | } | |
2934 | snd_pcm_stream_unlock_irq(substream); | |
2935 | return mask; | |
2936 | } | |
2937 | ||
2938 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2939 | { | |
877211f5 TI |
2940 | struct snd_pcm_file *pcm_file; |
2941 | struct snd_pcm_substream *substream; | |
2942 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2943 | unsigned int mask; |
2944 | snd_pcm_uframes_t avail; | |
2945 | ||
2946 | pcm_file = file->private_data; | |
2947 | ||
2948 | substream = pcm_file->substream; | |
2949 | snd_assert(substream != NULL, return -ENXIO); | |
2950 | runtime = substream->runtime; | |
2951 | ||
2952 | poll_wait(file, &runtime->sleep, wait); | |
2953 | ||
2954 | snd_pcm_stream_lock_irq(substream); | |
2955 | avail = snd_pcm_capture_avail(runtime); | |
2956 | switch (runtime->status->state) { | |
2957 | case SNDRV_PCM_STATE_RUNNING: | |
2958 | case SNDRV_PCM_STATE_PREPARED: | |
2959 | case SNDRV_PCM_STATE_PAUSED: | |
2960 | if (avail >= runtime->control->avail_min) { | |
2961 | mask = POLLIN | POLLRDNORM; | |
2962 | break; | |
2963 | } | |
2964 | mask = 0; | |
2965 | break; | |
2966 | case SNDRV_PCM_STATE_DRAINING: | |
2967 | if (avail > 0) { | |
2968 | mask = POLLIN | POLLRDNORM; | |
2969 | break; | |
2970 | } | |
2971 | /* Fall through */ | |
2972 | default: | |
2973 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2974 | break; | |
2975 | } | |
2976 | snd_pcm_stream_unlock_irq(substream); | |
2977 | return mask; | |
2978 | } | |
2979 | ||
2980 | /* | |
2981 | * mmap support | |
2982 | */ | |
2983 | ||
2984 | /* | |
2985 | * Only on coherent architectures, we can mmap the status and the control records | |
2986 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2987 | */ | |
2988 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2989 | /* | |
2990 | * mmap status record | |
2991 | */ | |
877211f5 TI |
2992 | static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area, |
2993 | unsigned long address, int *type) | |
1da177e4 | 2994 | { |
877211f5 TI |
2995 | struct snd_pcm_substream *substream = area->vm_private_data; |
2996 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2997 | struct page * page; |
2998 | ||
2999 | if (substream == NULL) | |
3000 | return NOPAGE_OOM; | |
3001 | runtime = substream->runtime; | |
3002 | page = virt_to_page(runtime->status); | |
b5810039 | 3003 | get_page(page); |
1da177e4 LT |
3004 | if (type) |
3005 | *type = VM_FAULT_MINOR; | |
3006 | return page; | |
3007 | } | |
3008 | ||
3009 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3010 | { | |
3011 | .nopage = snd_pcm_mmap_status_nopage, | |
3012 | }; | |
3013 | ||
877211f5 | 3014 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3015 | struct vm_area_struct *area) |
3016 | { | |
877211f5 | 3017 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3018 | long size; |
3019 | if (!(area->vm_flags & VM_READ)) | |
3020 | return -EINVAL; | |
3021 | runtime = substream->runtime; | |
3022 | snd_assert(runtime != NULL, return -EAGAIN); | |
3023 | size = area->vm_end - area->vm_start; | |
877211f5 | 3024 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3025 | return -EINVAL; |
3026 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3027 | area->vm_private_data = substream; | |
3028 | area->vm_flags |= VM_RESERVED; | |
3029 | return 0; | |
3030 | } | |
3031 | ||
3032 | /* | |
3033 | * mmap control record | |
3034 | */ | |
877211f5 TI |
3035 | static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area, |
3036 | unsigned long address, int *type) | |
1da177e4 | 3037 | { |
877211f5 TI |
3038 | struct snd_pcm_substream *substream = area->vm_private_data; |
3039 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3040 | struct page * page; |
3041 | ||
3042 | if (substream == NULL) | |
3043 | return NOPAGE_OOM; | |
3044 | runtime = substream->runtime; | |
3045 | page = virt_to_page(runtime->control); | |
b5810039 | 3046 | get_page(page); |
1da177e4 LT |
3047 | if (type) |
3048 | *type = VM_FAULT_MINOR; | |
3049 | return page; | |
3050 | } | |
3051 | ||
3052 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3053 | { | |
3054 | .nopage = snd_pcm_mmap_control_nopage, | |
3055 | }; | |
3056 | ||
877211f5 | 3057 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3058 | struct vm_area_struct *area) |
3059 | { | |
877211f5 | 3060 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3061 | long size; |
3062 | if (!(area->vm_flags & VM_READ)) | |
3063 | return -EINVAL; | |
3064 | runtime = substream->runtime; | |
3065 | snd_assert(runtime != NULL, return -EAGAIN); | |
3066 | size = area->vm_end - area->vm_start; | |
877211f5 | 3067 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3068 | return -EINVAL; |
3069 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3070 | area->vm_private_data = substream; | |
3071 | area->vm_flags |= VM_RESERVED; | |
3072 | return 0; | |
3073 | } | |
3074 | #else /* ! coherent mmap */ | |
3075 | /* | |
3076 | * don't support mmap for status and control records. | |
3077 | */ | |
877211f5 | 3078 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3079 | struct vm_area_struct *area) |
3080 | { | |
3081 | return -ENXIO; | |
3082 | } | |
877211f5 | 3083 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3084 | struct vm_area_struct *area) |
3085 | { | |
3086 | return -ENXIO; | |
3087 | } | |
3088 | #endif /* coherent mmap */ | |
3089 | ||
3090 | /* | |
3091 | * nopage callback for mmapping a RAM page | |
3092 | */ | |
877211f5 TI |
3093 | static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area, |
3094 | unsigned long address, int *type) | |
1da177e4 | 3095 | { |
877211f5 TI |
3096 | struct snd_pcm_substream *substream = area->vm_private_data; |
3097 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3098 | unsigned long offset; |
3099 | struct page * page; | |
3100 | void *vaddr; | |
3101 | size_t dma_bytes; | |
3102 | ||
3103 | if (substream == NULL) | |
3104 | return NOPAGE_OOM; | |
3105 | runtime = substream->runtime; | |
3106 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3107 | offset += address - area->vm_start; | |
3108 | snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM); | |
3109 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3110 | if (offset > dma_bytes - PAGE_SIZE) | |
3111 | return NOPAGE_SIGBUS; | |
3112 | if (substream->ops->page) { | |
3113 | page = substream->ops->page(substream, offset); | |
3114 | if (! page) | |
3115 | return NOPAGE_OOM; | |
3116 | } else { | |
3117 | vaddr = runtime->dma_area + offset; | |
3118 | page = virt_to_page(vaddr); | |
3119 | } | |
b5810039 | 3120 | get_page(page); |
1da177e4 LT |
3121 | if (type) |
3122 | *type = VM_FAULT_MINOR; | |
3123 | return page; | |
3124 | } | |
3125 | ||
3126 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3127 | { | |
3128 | .open = snd_pcm_mmap_data_open, | |
3129 | .close = snd_pcm_mmap_data_close, | |
3130 | .nopage = snd_pcm_mmap_data_nopage, | |
3131 | }; | |
3132 | ||
3133 | /* | |
3134 | * mmap the DMA buffer on RAM | |
3135 | */ | |
877211f5 TI |
3136 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3137 | struct vm_area_struct *area) | |
1da177e4 LT |
3138 | { |
3139 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3140 | area->vm_private_data = substream; | |
3141 | area->vm_flags |= VM_RESERVED; | |
3142 | atomic_inc(&substream->runtime->mmap_count); | |
3143 | return 0; | |
3144 | } | |
3145 | ||
3146 | /* | |
3147 | * mmap the DMA buffer on I/O memory area | |
3148 | */ | |
3149 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3150 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3151 | { | |
3152 | .open = snd_pcm_mmap_data_open, | |
3153 | .close = snd_pcm_mmap_data_close, | |
3154 | }; | |
3155 | ||
877211f5 TI |
3156 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3157 | struct vm_area_struct *area) | |
1da177e4 LT |
3158 | { |
3159 | long size; | |
3160 | unsigned long offset; | |
3161 | ||
3162 | #ifdef pgprot_noncached | |
3163 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3164 | #endif | |
3165 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3166 | area->vm_private_data = substream; | |
3167 | area->vm_flags |= VM_IO; | |
3168 | size = area->vm_end - area->vm_start; | |
3169 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3170 | if (io_remap_pfn_range(area, area->vm_start, | |
3171 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3172 | size, area->vm_page_prot)) | |
3173 | return -EAGAIN; | |
3174 | atomic_inc(&substream->runtime->mmap_count); | |
3175 | return 0; | |
3176 | } | |
3177 | #endif /* SNDRV_PCM_INFO_MMAP */ | |
3178 | ||
3179 | /* | |
3180 | * mmap DMA buffer | |
3181 | */ | |
877211f5 | 3182 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3183 | struct vm_area_struct *area) |
3184 | { | |
877211f5 | 3185 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3186 | long size; |
3187 | unsigned long offset; | |
3188 | size_t dma_bytes; | |
3189 | ||
3190 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3191 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3192 | return -EINVAL; | |
3193 | } else { | |
3194 | if (!(area->vm_flags & VM_READ)) | |
3195 | return -EINVAL; | |
3196 | } | |
3197 | runtime = substream->runtime; | |
3198 | snd_assert(runtime != NULL, return -EAGAIN); | |
3199 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
3200 | return -EBADFD; | |
3201 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3202 | return -ENXIO; | |
3203 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3204 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3205 | return -EINVAL; | |
3206 | size = area->vm_end - area->vm_start; | |
3207 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3208 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3209 | if ((size_t)size > dma_bytes) | |
3210 | return -EINVAL; | |
3211 | if (offset > dma_bytes - size) | |
3212 | return -EINVAL; | |
3213 | ||
3214 | if (substream->ops->mmap) | |
3215 | return substream->ops->mmap(substream, area); | |
3216 | else | |
3217 | return snd_pcm_default_mmap(substream, area); | |
3218 | } | |
3219 | ||
3220 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) | |
3221 | { | |
877211f5 TI |
3222 | struct snd_pcm_file * pcm_file; |
3223 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3224 | unsigned long offset; |
3225 | ||
3226 | pcm_file = file->private_data; | |
3227 | substream = pcm_file->substream; | |
3228 | snd_assert(substream != NULL, return -ENXIO); | |
3229 | ||
3230 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3231 | switch (offset) { | |
3232 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
3233 | if (substream->no_mmap_ctrl) | |
3234 | return -ENXIO; | |
3235 | return snd_pcm_mmap_status(substream, file, area); | |
3236 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
3237 | if (substream->no_mmap_ctrl) | |
3238 | return -ENXIO; | |
3239 | return snd_pcm_mmap_control(substream, file, area); | |
3240 | default: | |
3241 | return snd_pcm_mmap_data(substream, file, area); | |
3242 | } | |
3243 | return 0; | |
3244 | } | |
3245 | ||
3246 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3247 | { | |
877211f5 TI |
3248 | struct snd_pcm_file * pcm_file; |
3249 | struct snd_pcm_substream *substream; | |
3250 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3251 | int err; |
3252 | ||
3253 | pcm_file = file->private_data; | |
3254 | substream = pcm_file->substream; | |
3255 | snd_assert(substream != NULL, return -ENXIO); | |
3256 | runtime = substream->runtime; | |
3257 | ||
3258 | err = fasync_helper(fd, file, on, &runtime->fasync); | |
3259 | if (err < 0) | |
3260 | return err; | |
3261 | return 0; | |
3262 | } | |
3263 | ||
3264 | /* | |
3265 | * ioctl32 compat | |
3266 | */ | |
3267 | #ifdef CONFIG_COMPAT | |
3268 | #include "pcm_compat.c" | |
3269 | #else | |
3270 | #define snd_pcm_ioctl_compat NULL | |
3271 | #endif | |
3272 | ||
3273 | /* | |
3274 | * To be removed helpers to keep binary compatibility | |
3275 | */ | |
3276 | ||
59d48582 | 3277 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3278 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3279 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3280 | ||
877211f5 TI |
3281 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3282 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3283 | { |
3284 | unsigned int i; | |
3285 | ||
3286 | memset(params, 0, sizeof(*params)); | |
3287 | params->flags = oparams->flags; | |
3288 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3289 | params->masks[i].bits[0] = oparams->masks[i]; | |
3290 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3291 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3292 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3293 | params->info = oparams->info; | |
3294 | params->msbits = oparams->msbits; | |
3295 | params->rate_num = oparams->rate_num; | |
3296 | params->rate_den = oparams->rate_den; | |
3297 | params->fifo_size = oparams->fifo_size; | |
3298 | } | |
3299 | ||
877211f5 TI |
3300 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3301 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3302 | { |
3303 | unsigned int i; | |
3304 | ||
3305 | memset(oparams, 0, sizeof(*oparams)); | |
3306 | oparams->flags = params->flags; | |
3307 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3308 | oparams->masks[i] = params->masks[i].bits[0]; | |
3309 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3310 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3311 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3312 | oparams->info = params->info; | |
3313 | oparams->msbits = params->msbits; | |
3314 | oparams->rate_num = params->rate_num; | |
3315 | oparams->rate_den = params->rate_den; | |
3316 | oparams->fifo_size = params->fifo_size; | |
3317 | } | |
3318 | ||
877211f5 TI |
3319 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3320 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3321 | { |
877211f5 TI |
3322 | struct snd_pcm_hw_params *params; |
3323 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3324 | int err; |
3325 | ||
3326 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3327 | if (!params) { | |
3328 | err = -ENOMEM; | |
3329 | goto out; | |
3330 | } | |
3331 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3332 | if (!oparams) { | |
3333 | err = -ENOMEM; | |
3334 | goto out; | |
3335 | } | |
3336 | ||
3337 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3338 | err = -EFAULT; | |
3339 | goto out; | |
3340 | } | |
3341 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3342 | err = snd_pcm_hw_refine(substream, params); | |
3343 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3344 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3345 | if (!err) | |
3346 | err = -EFAULT; | |
3347 | } | |
3348 | out: | |
3349 | kfree(params); | |
3350 | kfree(oparams); | |
3351 | return err; | |
3352 | } | |
3353 | ||
877211f5 TI |
3354 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3355 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3356 | { |
877211f5 TI |
3357 | struct snd_pcm_hw_params *params; |
3358 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3359 | int err; |
3360 | ||
3361 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3362 | if (!params) { | |
3363 | err = -ENOMEM; | |
3364 | goto out; | |
3365 | } | |
3366 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3367 | if (!oparams) { | |
3368 | err = -ENOMEM; | |
3369 | goto out; | |
3370 | } | |
3371 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3372 | err = -EFAULT; | |
3373 | goto out; | |
3374 | } | |
3375 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3376 | err = snd_pcm_hw_params(substream, params); | |
3377 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3378 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3379 | if (!err) | |
3380 | err = -EFAULT; | |
3381 | } | |
3382 | out: | |
3383 | kfree(params); | |
3384 | kfree(oparams); | |
3385 | return err; | |
3386 | } | |
59d48582 | 3387 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 LT |
3388 | |
3389 | /* | |
3390 | * Register section | |
3391 | */ | |
3392 | ||
2af677fc | 3393 | struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3394 | { |
2af677fc CL |
3395 | .owner = THIS_MODULE, |
3396 | .write = snd_pcm_write, | |
3397 | .writev = snd_pcm_writev, | |
f87135f5 | 3398 | .open = snd_pcm_playback_open, |
2af677fc CL |
3399 | .release = snd_pcm_release, |
3400 | .poll = snd_pcm_playback_poll, | |
3401 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3402 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3403 | .mmap = snd_pcm_mmap, | |
3404 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3405 | }, |
3406 | { | |
2af677fc CL |
3407 | .owner = THIS_MODULE, |
3408 | .read = snd_pcm_read, | |
3409 | .readv = snd_pcm_readv, | |
f87135f5 | 3410 | .open = snd_pcm_capture_open, |
2af677fc CL |
3411 | .release = snd_pcm_release, |
3412 | .poll = snd_pcm_capture_poll, | |
3413 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3414 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3415 | .mmap = snd_pcm_mmap, | |
3416 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3417 | } |
3418 | }; |