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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); | |
e88e8ae6 | 74 | EXPORT_SYMBOL(snd_pcm_link_rwlock); |
1da177e4 | 75 | |
e88e8ae6 | 76 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
1da177e4 LT |
77 | |
78 | static inline mm_segment_t snd_enter_user(void) | |
79 | { | |
80 | mm_segment_t fs = get_fs(); | |
81 | set_fs(get_ds()); | |
82 | return fs; | |
83 | } | |
84 | ||
85 | static inline void snd_leave_user(mm_segment_t fs) | |
86 | { | |
87 | set_fs(fs); | |
88 | } | |
89 | ||
90 | ||
91 | ||
877211f5 | 92 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
1da177e4 | 93 | { |
877211f5 TI |
94 | struct snd_pcm_runtime *runtime; |
95 | struct snd_pcm *pcm = substream->pcm; | |
96 | struct snd_pcm_str *pstr = substream->pstr; | |
1da177e4 LT |
97 | |
98 | snd_assert(substream != NULL, return -ENXIO); | |
99 | memset(info, 0, sizeof(*info)); | |
100 | info->card = pcm->card->number; | |
101 | info->device = pcm->device; | |
102 | info->stream = substream->stream; | |
103 | info->subdevice = substream->number; | |
104 | strlcpy(info->id, pcm->id, sizeof(info->id)); | |
105 | strlcpy(info->name, pcm->name, sizeof(info->name)); | |
106 | info->dev_class = pcm->dev_class; | |
107 | info->dev_subclass = pcm->dev_subclass; | |
108 | info->subdevices_count = pstr->substream_count; | |
109 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; | |
110 | strlcpy(info->subname, substream->name, sizeof(info->subname)); | |
111 | runtime = substream->runtime; | |
112 | /* AB: FIXME!!! This is definitely nonsense */ | |
113 | if (runtime) { | |
114 | info->sync = runtime->sync; | |
115 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); | |
116 | } | |
117 | return 0; | |
118 | } | |
119 | ||
877211f5 TI |
120 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
121 | struct snd_pcm_info __user * _info) | |
1da177e4 | 122 | { |
877211f5 | 123 | struct snd_pcm_info *info; |
1da177e4 LT |
124 | int err; |
125 | ||
126 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
127 | if (! info) | |
128 | return -ENOMEM; | |
129 | err = snd_pcm_info(substream, info); | |
130 | if (err >= 0) { | |
131 | if (copy_to_user(_info, info, sizeof(*info))) | |
132 | err = -EFAULT; | |
133 | } | |
134 | kfree(info); | |
135 | return err; | |
136 | } | |
137 | ||
138 | #undef RULES_DEBUG | |
139 | ||
140 | #ifdef RULES_DEBUG | |
141 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v | |
142 | char *snd_pcm_hw_param_names[] = { | |
143 | HW_PARAM(ACCESS), | |
144 | HW_PARAM(FORMAT), | |
145 | HW_PARAM(SUBFORMAT), | |
146 | HW_PARAM(SAMPLE_BITS), | |
147 | HW_PARAM(FRAME_BITS), | |
148 | HW_PARAM(CHANNELS), | |
149 | HW_PARAM(RATE), | |
150 | HW_PARAM(PERIOD_TIME), | |
151 | HW_PARAM(PERIOD_SIZE), | |
152 | HW_PARAM(PERIOD_BYTES), | |
153 | HW_PARAM(PERIODS), | |
154 | HW_PARAM(BUFFER_TIME), | |
155 | HW_PARAM(BUFFER_SIZE), | |
156 | HW_PARAM(BUFFER_BYTES), | |
157 | HW_PARAM(TICK_TIME), | |
158 | }; | |
159 | #endif | |
160 | ||
877211f5 TI |
161 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
162 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
163 | { |
164 | unsigned int k; | |
877211f5 TI |
165 | struct snd_pcm_hardware *hw; |
166 | struct snd_interval *i = NULL; | |
167 | struct snd_mask *m = NULL; | |
168 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; | |
1da177e4 LT |
169 | unsigned int rstamps[constrs->rules_num]; |
170 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; | |
171 | unsigned int stamp = 2; | |
172 | int changed, again; | |
173 | ||
174 | params->info = 0; | |
175 | params->fifo_size = 0; | |
176 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) | |
177 | params->msbits = 0; | |
178 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { | |
179 | params->rate_num = 0; | |
180 | params->rate_den = 0; | |
181 | } | |
182 | ||
183 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
184 | m = hw_param_mask(params, k); | |
185 | if (snd_mask_empty(m)) | |
186 | return -EINVAL; | |
187 | if (!(params->rmask & (1 << k))) | |
188 | continue; | |
189 | #ifdef RULES_DEBUG | |
190 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
191 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
192 | #endif | |
193 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); | |
194 | #ifdef RULES_DEBUG | |
195 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); | |
196 | #endif | |
197 | if (changed) | |
198 | params->cmask |= 1 << k; | |
199 | if (changed < 0) | |
200 | return changed; | |
201 | } | |
202 | ||
203 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
204 | i = hw_param_interval(params, k); | |
205 | if (snd_interval_empty(i)) | |
206 | return -EINVAL; | |
207 | if (!(params->rmask & (1 << k))) | |
208 | continue; | |
209 | #ifdef RULES_DEBUG | |
210 | printk("%s = ", snd_pcm_hw_param_names[k]); | |
211 | if (i->empty) | |
212 | printk("empty"); | |
213 | else | |
214 | printk("%c%u %u%c", | |
215 | i->openmin ? '(' : '[', i->min, | |
216 | i->max, i->openmax ? ')' : ']'); | |
217 | printk(" -> "); | |
218 | #endif | |
219 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); | |
220 | #ifdef RULES_DEBUG | |
221 | if (i->empty) | |
222 | printk("empty\n"); | |
223 | else | |
224 | printk("%c%u %u%c\n", | |
225 | i->openmin ? '(' : '[', i->min, | |
226 | i->max, i->openmax ? ')' : ']'); | |
227 | #endif | |
228 | if (changed) | |
229 | params->cmask |= 1 << k; | |
230 | if (changed < 0) | |
231 | return changed; | |
232 | } | |
233 | ||
234 | for (k = 0; k < constrs->rules_num; k++) | |
235 | rstamps[k] = 0; | |
236 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) | |
237 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; | |
238 | do { | |
239 | again = 0; | |
240 | for (k = 0; k < constrs->rules_num; k++) { | |
877211f5 | 241 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
1da177e4 LT |
242 | unsigned int d; |
243 | int doit = 0; | |
244 | if (r->cond && !(r->cond & params->flags)) | |
245 | continue; | |
246 | for (d = 0; r->deps[d] >= 0; d++) { | |
247 | if (vstamps[r->deps[d]] > rstamps[k]) { | |
248 | doit = 1; | |
249 | break; | |
250 | } | |
251 | } | |
252 | if (!doit) | |
253 | continue; | |
254 | #ifdef RULES_DEBUG | |
255 | printk("Rule %d [%p]: ", k, r->func); | |
256 | if (r->var >= 0) { | |
257 | printk("%s = ", snd_pcm_hw_param_names[r->var]); | |
258 | if (hw_is_mask(r->var)) { | |
259 | m = hw_param_mask(params, r->var); | |
260 | printk("%x", *m->bits); | |
261 | } else { | |
262 | i = hw_param_interval(params, r->var); | |
263 | if (i->empty) | |
264 | printk("empty"); | |
265 | else | |
266 | printk("%c%u %u%c", | |
267 | i->openmin ? '(' : '[', i->min, | |
268 | i->max, i->openmax ? ')' : ']'); | |
269 | } | |
270 | } | |
271 | #endif | |
272 | changed = r->func(params, r); | |
273 | #ifdef RULES_DEBUG | |
274 | if (r->var >= 0) { | |
275 | printk(" -> "); | |
276 | if (hw_is_mask(r->var)) | |
277 | printk("%x", *m->bits); | |
278 | else { | |
279 | if (i->empty) | |
280 | printk("empty"); | |
281 | else | |
282 | printk("%c%u %u%c", | |
283 | i->openmin ? '(' : '[', i->min, | |
284 | i->max, i->openmax ? ')' : ']'); | |
285 | } | |
286 | } | |
287 | printk("\n"); | |
288 | #endif | |
289 | rstamps[k] = stamp; | |
290 | if (changed && r->var >= 0) { | |
291 | params->cmask |= (1 << r->var); | |
292 | vstamps[r->var] = stamp; | |
293 | again = 1; | |
294 | } | |
295 | if (changed < 0) | |
296 | return changed; | |
297 | stamp++; | |
298 | } | |
299 | } while (again); | |
300 | if (!params->msbits) { | |
301 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); | |
302 | if (snd_interval_single(i)) | |
303 | params->msbits = snd_interval_value(i); | |
304 | } | |
305 | ||
306 | if (!params->rate_den) { | |
307 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); | |
308 | if (snd_interval_single(i)) { | |
309 | params->rate_num = snd_interval_value(i); | |
310 | params->rate_den = 1; | |
311 | } | |
312 | } | |
313 | ||
314 | hw = &substream->runtime->hw; | |
315 | if (!params->info) | |
316 | params->info = hw->info; | |
317 | if (!params->fifo_size) | |
318 | params->fifo_size = hw->fifo_size; | |
319 | params->rmask = 0; | |
320 | return 0; | |
321 | } | |
322 | ||
e88e8ae6 TI |
323 | EXPORT_SYMBOL(snd_pcm_hw_refine); |
324 | ||
877211f5 TI |
325 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
326 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 327 | { |
877211f5 | 328 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
329 | int err; |
330 | ||
331 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
332 | if (!params) { | |
333 | err = -ENOMEM; | |
334 | goto out; | |
335 | } | |
336 | if (copy_from_user(params, _params, sizeof(*params))) { | |
337 | err = -EFAULT; | |
338 | goto out; | |
339 | } | |
340 | err = snd_pcm_hw_refine(substream, params); | |
341 | if (copy_to_user(_params, params, sizeof(*params))) { | |
342 | if (!err) | |
343 | err = -EFAULT; | |
344 | } | |
345 | out: | |
346 | kfree(params); | |
347 | return err; | |
348 | } | |
349 | ||
877211f5 TI |
350 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
351 | struct snd_pcm_hw_params *params) | |
1da177e4 | 352 | { |
877211f5 | 353 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
354 | int err; |
355 | unsigned int bits; | |
356 | snd_pcm_uframes_t frames; | |
357 | ||
358 | snd_assert(substream != NULL, return -ENXIO); | |
359 | runtime = substream->runtime; | |
360 | snd_assert(runtime != NULL, return -ENXIO); | |
361 | snd_pcm_stream_lock_irq(substream); | |
362 | switch (runtime->status->state) { | |
363 | case SNDRV_PCM_STATE_OPEN: | |
364 | case SNDRV_PCM_STATE_SETUP: | |
365 | case SNDRV_PCM_STATE_PREPARED: | |
366 | break; | |
367 | default: | |
368 | snd_pcm_stream_unlock_irq(substream); | |
369 | return -EBADFD; | |
370 | } | |
371 | snd_pcm_stream_unlock_irq(substream); | |
372 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
373 | if (!substream->oss.oss) | |
374 | #endif | |
375 | if (atomic_read(&runtime->mmap_count)) | |
376 | return -EBADFD; | |
377 | ||
378 | params->rmask = ~0U; | |
379 | err = snd_pcm_hw_refine(substream, params); | |
380 | if (err < 0) | |
381 | goto _error; | |
382 | ||
383 | err = snd_pcm_hw_params_choose(substream, params); | |
384 | if (err < 0) | |
385 | goto _error; | |
386 | ||
387 | if (substream->ops->hw_params != NULL) { | |
388 | err = substream->ops->hw_params(substream, params); | |
389 | if (err < 0) | |
390 | goto _error; | |
391 | } | |
392 | ||
393 | runtime->access = params_access(params); | |
394 | runtime->format = params_format(params); | |
395 | runtime->subformat = params_subformat(params); | |
396 | runtime->channels = params_channels(params); | |
397 | runtime->rate = params_rate(params); | |
398 | runtime->period_size = params_period_size(params); | |
399 | runtime->periods = params_periods(params); | |
400 | runtime->buffer_size = params_buffer_size(params); | |
401 | runtime->tick_time = params_tick_time(params); | |
402 | runtime->info = params->info; | |
403 | runtime->rate_num = params->rate_num; | |
404 | runtime->rate_den = params->rate_den; | |
405 | ||
406 | bits = snd_pcm_format_physical_width(runtime->format); | |
407 | runtime->sample_bits = bits; | |
408 | bits *= runtime->channels; | |
409 | runtime->frame_bits = bits; | |
410 | frames = 1; | |
411 | while (bits % 8 != 0) { | |
412 | bits *= 2; | |
413 | frames *= 2; | |
414 | } | |
415 | runtime->byte_align = bits / 8; | |
416 | runtime->min_align = frames; | |
417 | ||
418 | /* Default sw params */ | |
419 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; | |
420 | runtime->period_step = 1; | |
421 | runtime->sleep_min = 0; | |
422 | runtime->control->avail_min = runtime->period_size; | |
423 | runtime->xfer_align = runtime->period_size; | |
424 | runtime->start_threshold = 1; | |
425 | runtime->stop_threshold = runtime->buffer_size; | |
426 | runtime->silence_threshold = 0; | |
427 | runtime->silence_size = 0; | |
428 | runtime->boundary = runtime->buffer_size; | |
429 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) | |
430 | runtime->boundary *= 2; | |
431 | ||
432 | snd_pcm_timer_resolution_change(substream); | |
433 | runtime->status->state = SNDRV_PCM_STATE_SETUP; | |
434 | return 0; | |
435 | _error: | |
436 | /* hardware might be unuseable from this time, | |
437 | so we force application to retry to set | |
438 | the correct hardware parameter settings */ | |
439 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
440 | if (substream->ops->hw_free != NULL) | |
441 | substream->ops->hw_free(substream); | |
442 | return err; | |
443 | } | |
444 | ||
877211f5 TI |
445 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
446 | struct snd_pcm_hw_params __user * _params) | |
1da177e4 | 447 | { |
877211f5 | 448 | struct snd_pcm_hw_params *params; |
1da177e4 LT |
449 | int err; |
450 | ||
451 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
452 | if (!params) { | |
453 | err = -ENOMEM; | |
454 | goto out; | |
455 | } | |
456 | if (copy_from_user(params, _params, sizeof(*params))) { | |
457 | err = -EFAULT; | |
458 | goto out; | |
459 | } | |
460 | err = snd_pcm_hw_params(substream, params); | |
461 | if (copy_to_user(_params, params, sizeof(*params))) { | |
462 | if (!err) | |
463 | err = -EFAULT; | |
464 | } | |
465 | out: | |
466 | kfree(params); | |
467 | return err; | |
468 | } | |
469 | ||
877211f5 | 470 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 471 | { |
877211f5 | 472 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
473 | int result = 0; |
474 | ||
475 | snd_assert(substream != NULL, return -ENXIO); | |
476 | runtime = substream->runtime; | |
477 | snd_assert(runtime != NULL, return -ENXIO); | |
478 | snd_pcm_stream_lock_irq(substream); | |
479 | switch (runtime->status->state) { | |
480 | case SNDRV_PCM_STATE_SETUP: | |
481 | case SNDRV_PCM_STATE_PREPARED: | |
482 | break; | |
483 | default: | |
484 | snd_pcm_stream_unlock_irq(substream); | |
485 | return -EBADFD; | |
486 | } | |
487 | snd_pcm_stream_unlock_irq(substream); | |
488 | if (atomic_read(&runtime->mmap_count)) | |
489 | return -EBADFD; | |
490 | if (substream->ops->hw_free) | |
491 | result = substream->ops->hw_free(substream); | |
492 | runtime->status->state = SNDRV_PCM_STATE_OPEN; | |
493 | return result; | |
494 | } | |
495 | ||
877211f5 TI |
496 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
497 | struct snd_pcm_sw_params *params) | |
1da177e4 | 498 | { |
877211f5 | 499 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
500 | |
501 | snd_assert(substream != NULL, return -ENXIO); | |
502 | runtime = substream->runtime; | |
503 | snd_assert(runtime != NULL, return -ENXIO); | |
504 | snd_pcm_stream_lock_irq(substream); | |
505 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
506 | snd_pcm_stream_unlock_irq(substream); | |
507 | return -EBADFD; | |
508 | } | |
509 | snd_pcm_stream_unlock_irq(substream); | |
510 | ||
511 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) | |
512 | return -EINVAL; | |
513 | if (params->avail_min == 0) | |
514 | return -EINVAL; | |
515 | if (params->xfer_align == 0 || | |
516 | params->xfer_align % runtime->min_align != 0) | |
517 | return -EINVAL; | |
518 | if (params->silence_size >= runtime->boundary) { | |
519 | if (params->silence_threshold != 0) | |
520 | return -EINVAL; | |
521 | } else { | |
522 | if (params->silence_size > params->silence_threshold) | |
523 | return -EINVAL; | |
524 | if (params->silence_threshold > runtime->buffer_size) | |
525 | return -EINVAL; | |
526 | } | |
527 | snd_pcm_stream_lock_irq(substream); | |
528 | runtime->tstamp_mode = params->tstamp_mode; | |
529 | runtime->sleep_min = params->sleep_min; | |
530 | runtime->period_step = params->period_step; | |
531 | runtime->control->avail_min = params->avail_min; | |
532 | runtime->start_threshold = params->start_threshold; | |
533 | runtime->stop_threshold = params->stop_threshold; | |
534 | runtime->silence_threshold = params->silence_threshold; | |
535 | runtime->silence_size = params->silence_size; | |
536 | runtime->xfer_align = params->xfer_align; | |
537 | params->boundary = runtime->boundary; | |
538 | if (snd_pcm_running(substream)) { | |
539 | if (runtime->sleep_min) | |
540 | snd_pcm_tick_prepare(substream); | |
541 | else | |
542 | snd_pcm_tick_set(substream, 0); | |
543 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
544 | runtime->silence_size > 0) | |
545 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
546 | wake_up(&runtime->sleep); | |
547 | } | |
548 | snd_pcm_stream_unlock_irq(substream); | |
549 | return 0; | |
550 | } | |
551 | ||
877211f5 TI |
552 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
553 | struct snd_pcm_sw_params __user * _params) | |
1da177e4 | 554 | { |
877211f5 | 555 | struct snd_pcm_sw_params params; |
1da177e4 LT |
556 | int err; |
557 | if (copy_from_user(¶ms, _params, sizeof(params))) | |
558 | return -EFAULT; | |
559 | err = snd_pcm_sw_params(substream, ¶ms); | |
560 | if (copy_to_user(_params, ¶ms, sizeof(params))) | |
561 | return -EFAULT; | |
562 | return err; | |
563 | } | |
564 | ||
877211f5 TI |
565 | int snd_pcm_status(struct snd_pcm_substream *substream, |
566 | struct snd_pcm_status *status) | |
1da177e4 | 567 | { |
877211f5 | 568 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
569 | |
570 | snd_pcm_stream_lock_irq(substream); | |
571 | status->state = runtime->status->state; | |
572 | status->suspended_state = runtime->status->suspended_state; | |
573 | if (status->state == SNDRV_PCM_STATE_OPEN) | |
574 | goto _end; | |
575 | status->trigger_tstamp = runtime->trigger_tstamp; | |
576 | if (snd_pcm_running(substream)) { | |
577 | snd_pcm_update_hw_ptr(substream); | |
578 | if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP) | |
579 | status->tstamp = runtime->status->tstamp; | |
580 | else | |
07799e75 | 581 | getnstimeofday(&status->tstamp); |
1da177e4 | 582 | } else |
07799e75 | 583 | getnstimeofday(&status->tstamp); |
1da177e4 LT |
584 | status->appl_ptr = runtime->control->appl_ptr; |
585 | status->hw_ptr = runtime->status->hw_ptr; | |
586 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
587 | status->avail = snd_pcm_playback_avail(runtime); | |
588 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
589 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
590 | status->delay = runtime->buffer_size - status->avail; | |
591 | else | |
592 | status->delay = 0; | |
593 | } else { | |
594 | status->avail = snd_pcm_capture_avail(runtime); | |
595 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) | |
596 | status->delay = status->avail; | |
597 | else | |
598 | status->delay = 0; | |
599 | } | |
600 | status->avail_max = runtime->avail_max; | |
601 | status->overrange = runtime->overrange; | |
602 | runtime->avail_max = 0; | |
603 | runtime->overrange = 0; | |
604 | _end: | |
605 | snd_pcm_stream_unlock_irq(substream); | |
606 | return 0; | |
607 | } | |
608 | ||
877211f5 TI |
609 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
610 | struct snd_pcm_status __user * _status) | |
1da177e4 | 611 | { |
877211f5 TI |
612 | struct snd_pcm_status status; |
613 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
614 | int res; |
615 | ||
616 | snd_assert(substream != NULL, return -ENXIO); | |
617 | runtime = substream->runtime; | |
618 | memset(&status, 0, sizeof(status)); | |
619 | res = snd_pcm_status(substream, &status); | |
620 | if (res < 0) | |
621 | return res; | |
622 | if (copy_to_user(_status, &status, sizeof(status))) | |
623 | return -EFAULT; | |
624 | return 0; | |
625 | } | |
626 | ||
877211f5 TI |
627 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
628 | struct snd_pcm_channel_info * info) | |
1da177e4 | 629 | { |
877211f5 | 630 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
631 | unsigned int channel; |
632 | ||
633 | snd_assert(substream != NULL, return -ENXIO); | |
634 | channel = info->channel; | |
635 | runtime = substream->runtime; | |
636 | snd_pcm_stream_lock_irq(substream); | |
637 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
638 | snd_pcm_stream_unlock_irq(substream); | |
639 | return -EBADFD; | |
640 | } | |
641 | snd_pcm_stream_unlock_irq(substream); | |
642 | if (channel >= runtime->channels) | |
643 | return -EINVAL; | |
644 | memset(info, 0, sizeof(*info)); | |
645 | info->channel = channel; | |
646 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); | |
647 | } | |
648 | ||
877211f5 TI |
649 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
650 | struct snd_pcm_channel_info __user * _info) | |
1da177e4 | 651 | { |
877211f5 | 652 | struct snd_pcm_channel_info info; |
1da177e4 LT |
653 | int res; |
654 | ||
655 | if (copy_from_user(&info, _info, sizeof(info))) | |
656 | return -EFAULT; | |
657 | res = snd_pcm_channel_info(substream, &info); | |
658 | if (res < 0) | |
659 | return res; | |
660 | if (copy_to_user(_info, &info, sizeof(info))) | |
661 | return -EFAULT; | |
662 | return 0; | |
663 | } | |
664 | ||
877211f5 | 665 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
1da177e4 | 666 | { |
877211f5 | 667 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
668 | if (runtime->trigger_master == NULL) |
669 | return; | |
670 | if (runtime->trigger_master == substream) { | |
07799e75 | 671 | getnstimeofday(&runtime->trigger_tstamp); |
1da177e4 LT |
672 | } else { |
673 | snd_pcm_trigger_tstamp(runtime->trigger_master); | |
674 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; | |
675 | } | |
676 | runtime->trigger_master = NULL; | |
677 | } | |
678 | ||
679 | struct action_ops { | |
877211f5 TI |
680 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
681 | int (*do_action)(struct snd_pcm_substream *substream, int state); | |
682 | void (*undo_action)(struct snd_pcm_substream *substream, int state); | |
683 | void (*post_action)(struct snd_pcm_substream *substream, int state); | |
1da177e4 LT |
684 | }; |
685 | ||
686 | /* | |
687 | * this functions is core for handling of linked stream | |
688 | * Note: the stream state might be changed also on failure | |
689 | * Note2: call with calling stream lock + link lock | |
690 | */ | |
691 | static int snd_pcm_action_group(struct action_ops *ops, | |
877211f5 | 692 | struct snd_pcm_substream *substream, |
1da177e4 LT |
693 | int state, int do_lock) |
694 | { | |
695 | struct list_head *pos; | |
877211f5 TI |
696 | struct snd_pcm_substream *s = NULL; |
697 | struct snd_pcm_substream *s1; | |
1da177e4 LT |
698 | int res = 0; |
699 | ||
700 | snd_pcm_group_for_each(pos, substream) { | |
701 | s = snd_pcm_group_substream_entry(pos); | |
702 | if (do_lock && s != substream) | |
703 | spin_lock(&s->self_group.lock); | |
704 | res = ops->pre_action(s, state); | |
705 | if (res < 0) | |
706 | goto _unlock; | |
707 | } | |
708 | snd_pcm_group_for_each(pos, substream) { | |
709 | s = snd_pcm_group_substream_entry(pos); | |
710 | res = ops->do_action(s, state); | |
711 | if (res < 0) { | |
712 | if (ops->undo_action) { | |
713 | snd_pcm_group_for_each(pos, substream) { | |
714 | s1 = snd_pcm_group_substream_entry(pos); | |
715 | if (s1 == s) /* failed stream */ | |
716 | break; | |
717 | ops->undo_action(s1, state); | |
718 | } | |
719 | } | |
720 | s = NULL; /* unlock all */ | |
721 | goto _unlock; | |
722 | } | |
723 | } | |
724 | snd_pcm_group_for_each(pos, substream) { | |
725 | s = snd_pcm_group_substream_entry(pos); | |
726 | ops->post_action(s, state); | |
727 | } | |
728 | _unlock: | |
729 | if (do_lock) { | |
730 | /* unlock streams */ | |
731 | snd_pcm_group_for_each(pos, substream) { | |
732 | s1 = snd_pcm_group_substream_entry(pos); | |
733 | if (s1 != substream) | |
734 | spin_unlock(&s1->self_group.lock); | |
735 | if (s1 == s) /* end */ | |
736 | break; | |
737 | } | |
738 | } | |
739 | return res; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Note: call with stream lock | |
744 | */ | |
745 | static int snd_pcm_action_single(struct action_ops *ops, | |
877211f5 | 746 | struct snd_pcm_substream *substream, |
1da177e4 LT |
747 | int state) |
748 | { | |
749 | int res; | |
750 | ||
751 | res = ops->pre_action(substream, state); | |
752 | if (res < 0) | |
753 | return res; | |
754 | res = ops->do_action(substream, state); | |
755 | if (res == 0) | |
756 | ops->post_action(substream, state); | |
757 | else if (ops->undo_action) | |
758 | ops->undo_action(substream, state); | |
759 | return res; | |
760 | } | |
761 | ||
762 | /* | |
763 | * Note: call with stream lock | |
764 | */ | |
765 | static int snd_pcm_action(struct action_ops *ops, | |
877211f5 | 766 | struct snd_pcm_substream *substream, |
1da177e4 LT |
767 | int state) |
768 | { | |
769 | int res; | |
770 | ||
771 | if (snd_pcm_stream_linked(substream)) { | |
772 | if (!spin_trylock(&substream->group->lock)) { | |
773 | spin_unlock(&substream->self_group.lock); | |
774 | spin_lock(&substream->group->lock); | |
775 | spin_lock(&substream->self_group.lock); | |
776 | } | |
777 | res = snd_pcm_action_group(ops, substream, state, 1); | |
778 | spin_unlock(&substream->group->lock); | |
779 | } else { | |
780 | res = snd_pcm_action_single(ops, substream, state); | |
781 | } | |
782 | return res; | |
783 | } | |
784 | ||
785 | /* | |
786 | * Note: don't use any locks before | |
787 | */ | |
788 | static int snd_pcm_action_lock_irq(struct action_ops *ops, | |
877211f5 | 789 | struct snd_pcm_substream *substream, |
1da177e4 LT |
790 | int state) |
791 | { | |
792 | int res; | |
793 | ||
794 | read_lock_irq(&snd_pcm_link_rwlock); | |
795 | if (snd_pcm_stream_linked(substream)) { | |
796 | spin_lock(&substream->group->lock); | |
797 | spin_lock(&substream->self_group.lock); | |
798 | res = snd_pcm_action_group(ops, substream, state, 1); | |
799 | spin_unlock(&substream->self_group.lock); | |
800 | spin_unlock(&substream->group->lock); | |
801 | } else { | |
802 | spin_lock(&substream->self_group.lock); | |
803 | res = snd_pcm_action_single(ops, substream, state); | |
804 | spin_unlock(&substream->self_group.lock); | |
805 | } | |
806 | read_unlock_irq(&snd_pcm_link_rwlock); | |
807 | return res; | |
808 | } | |
809 | ||
810 | /* | |
811 | */ | |
812 | static int snd_pcm_action_nonatomic(struct action_ops *ops, | |
877211f5 | 813 | struct snd_pcm_substream *substream, |
1da177e4 LT |
814 | int state) |
815 | { | |
816 | int res; | |
817 | ||
818 | down_read(&snd_pcm_link_rwsem); | |
819 | if (snd_pcm_stream_linked(substream)) | |
820 | res = snd_pcm_action_group(ops, substream, state, 0); | |
821 | else | |
822 | res = snd_pcm_action_single(ops, substream, state); | |
823 | up_read(&snd_pcm_link_rwsem); | |
824 | return res; | |
825 | } | |
826 | ||
827 | /* | |
828 | * start callbacks | |
829 | */ | |
877211f5 | 830 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 831 | { |
877211f5 | 832 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
833 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
834 | return -EBADFD; | |
835 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
836 | !snd_pcm_playback_data(substream)) | |
837 | return -EPIPE; | |
838 | runtime->trigger_master = substream; | |
839 | return 0; | |
840 | } | |
841 | ||
877211f5 | 842 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
843 | { |
844 | if (substream->runtime->trigger_master != substream) | |
845 | return 0; | |
846 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); | |
847 | } | |
848 | ||
877211f5 | 849 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
850 | { |
851 | if (substream->runtime->trigger_master == substream) | |
852 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
853 | } | |
854 | ||
877211f5 | 855 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
1da177e4 | 856 | { |
877211f5 | 857 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
858 | snd_pcm_trigger_tstamp(substream); |
859 | runtime->status->state = state; | |
860 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
861 | runtime->silence_size > 0) | |
862 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
863 | if (runtime->sleep_min) | |
864 | snd_pcm_tick_prepare(substream); | |
865 | if (substream->timer) | |
877211f5 TI |
866 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
867 | &runtime->trigger_tstamp); | |
1da177e4 LT |
868 | } |
869 | ||
870 | static struct action_ops snd_pcm_action_start = { | |
871 | .pre_action = snd_pcm_pre_start, | |
872 | .do_action = snd_pcm_do_start, | |
873 | .undo_action = snd_pcm_undo_start, | |
874 | .post_action = snd_pcm_post_start | |
875 | }; | |
876 | ||
877 | /** | |
878 | * snd_pcm_start | |
df8db936 | 879 | * @substream: the PCM substream instance |
1da177e4 LT |
880 | * |
881 | * Start all linked streams. | |
882 | */ | |
877211f5 | 883 | int snd_pcm_start(struct snd_pcm_substream *substream) |
1da177e4 | 884 | { |
877211f5 TI |
885 | return snd_pcm_action(&snd_pcm_action_start, substream, |
886 | SNDRV_PCM_STATE_RUNNING); | |
1da177e4 LT |
887 | } |
888 | ||
889 | /* | |
890 | * stop callbacks | |
891 | */ | |
877211f5 | 892 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 893 | { |
877211f5 | 894 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
895 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
896 | return -EBADFD; | |
897 | runtime->trigger_master = substream; | |
898 | return 0; | |
899 | } | |
900 | ||
877211f5 | 901 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
902 | { |
903 | if (substream->runtime->trigger_master == substream && | |
904 | snd_pcm_running(substream)) | |
905 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); | |
906 | return 0; /* unconditonally stop all substreams */ | |
907 | } | |
908 | ||
877211f5 | 909 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 | 910 | { |
877211f5 | 911 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
912 | if (runtime->status->state != state) { |
913 | snd_pcm_trigger_tstamp(substream); | |
914 | if (substream->timer) | |
877211f5 TI |
915 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
916 | &runtime->trigger_tstamp); | |
1da177e4 LT |
917 | runtime->status->state = state; |
918 | snd_pcm_tick_set(substream, 0); | |
919 | } | |
920 | wake_up(&runtime->sleep); | |
921 | } | |
922 | ||
923 | static struct action_ops snd_pcm_action_stop = { | |
924 | .pre_action = snd_pcm_pre_stop, | |
925 | .do_action = snd_pcm_do_stop, | |
926 | .post_action = snd_pcm_post_stop | |
927 | }; | |
928 | ||
929 | /** | |
930 | * snd_pcm_stop | |
df8db936 TI |
931 | * @substream: the PCM substream instance |
932 | * @state: PCM state after stopping the stream | |
1da177e4 LT |
933 | * |
934 | * Try to stop all running streams in the substream group. | |
935 | * The state of each stream is changed to the given value after that unconditionally. | |
936 | */ | |
877211f5 | 937 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
938 | { |
939 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); | |
940 | } | |
941 | ||
e88e8ae6 TI |
942 | EXPORT_SYMBOL(snd_pcm_stop); |
943 | ||
1da177e4 LT |
944 | /** |
945 | * snd_pcm_drain_done | |
df8db936 | 946 | * @substream: the PCM substream |
1da177e4 LT |
947 | * |
948 | * Stop the DMA only when the given stream is playback. | |
949 | * The state is changed to SETUP. | |
950 | * Unlike snd_pcm_stop(), this affects only the given stream. | |
951 | */ | |
877211f5 | 952 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
1da177e4 | 953 | { |
877211f5 TI |
954 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
955 | SNDRV_PCM_STATE_SETUP); | |
1da177e4 LT |
956 | } |
957 | ||
958 | /* | |
959 | * pause callbacks | |
960 | */ | |
877211f5 | 961 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 962 | { |
877211f5 | 963 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
964 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
965 | return -ENOSYS; | |
966 | if (push) { | |
967 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) | |
968 | return -EBADFD; | |
969 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) | |
970 | return -EBADFD; | |
971 | runtime->trigger_master = substream; | |
972 | return 0; | |
973 | } | |
974 | ||
877211f5 | 975 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
976 | { |
977 | if (substream->runtime->trigger_master != substream) | |
978 | return 0; | |
979 | return substream->ops->trigger(substream, | |
980 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : | |
981 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); | |
982 | } | |
983 | ||
877211f5 | 984 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
985 | { |
986 | if (substream->runtime->trigger_master == substream) | |
987 | substream->ops->trigger(substream, | |
988 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : | |
989 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); | |
990 | } | |
991 | ||
877211f5 | 992 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 | 993 | { |
877211f5 | 994 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
995 | snd_pcm_trigger_tstamp(substream); |
996 | if (push) { | |
997 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; | |
998 | if (substream->timer) | |
877211f5 TI |
999 | snd_timer_notify(substream->timer, |
1000 | SNDRV_TIMER_EVENT_MPAUSE, | |
1001 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1002 | snd_pcm_tick_set(substream, 0); |
1003 | wake_up(&runtime->sleep); | |
1004 | } else { | |
1005 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; | |
1006 | if (runtime->sleep_min) | |
1007 | snd_pcm_tick_prepare(substream); | |
1008 | if (substream->timer) | |
877211f5 TI |
1009 | snd_timer_notify(substream->timer, |
1010 | SNDRV_TIMER_EVENT_MCONTINUE, | |
1011 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1012 | } |
1013 | } | |
1014 | ||
1015 | static struct action_ops snd_pcm_action_pause = { | |
1016 | .pre_action = snd_pcm_pre_pause, | |
1017 | .do_action = snd_pcm_do_pause, | |
1018 | .undo_action = snd_pcm_undo_pause, | |
1019 | .post_action = snd_pcm_post_pause | |
1020 | }; | |
1021 | ||
1022 | /* | |
1023 | * Push/release the pause for all linked streams. | |
1024 | */ | |
877211f5 | 1025 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
1da177e4 LT |
1026 | { |
1027 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); | |
1028 | } | |
1029 | ||
1030 | #ifdef CONFIG_PM | |
1031 | /* suspend */ | |
1032 | ||
877211f5 | 1033 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1034 | { |
877211f5 | 1035 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1036 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
1037 | return -EBUSY; | |
1038 | runtime->trigger_master = substream; | |
1039 | return 0; | |
1040 | } | |
1041 | ||
877211f5 | 1042 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1043 | { |
877211f5 | 1044 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1045 | if (runtime->trigger_master != substream) |
1046 | return 0; | |
1047 | if (! snd_pcm_running(substream)) | |
1048 | return 0; | |
1049 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1050 | return 0; /* suspend unconditionally */ | |
1051 | } | |
1052 | ||
877211f5 | 1053 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1054 | { |
877211f5 | 1055 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1056 | snd_pcm_trigger_tstamp(substream); |
1057 | if (substream->timer) | |
877211f5 TI |
1058 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
1059 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1060 | runtime->status->suspended_state = runtime->status->state; |
1061 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; | |
1062 | snd_pcm_tick_set(substream, 0); | |
1063 | wake_up(&runtime->sleep); | |
1064 | } | |
1065 | ||
1066 | static struct action_ops snd_pcm_action_suspend = { | |
1067 | .pre_action = snd_pcm_pre_suspend, | |
1068 | .do_action = snd_pcm_do_suspend, | |
1069 | .post_action = snd_pcm_post_suspend | |
1070 | }; | |
1071 | ||
1072 | /** | |
1073 | * snd_pcm_suspend | |
df8db936 | 1074 | * @substream: the PCM substream |
1da177e4 LT |
1075 | * |
1076 | * Trigger SUSPEND to all linked streams. | |
1077 | * After this call, all streams are changed to SUSPENDED state. | |
1078 | */ | |
877211f5 | 1079 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
1da177e4 LT |
1080 | { |
1081 | int err; | |
1082 | unsigned long flags; | |
1083 | ||
603bf524 TI |
1084 | if (! substream) |
1085 | return 0; | |
1086 | ||
1da177e4 LT |
1087 | snd_pcm_stream_lock_irqsave(substream, flags); |
1088 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); | |
1089 | snd_pcm_stream_unlock_irqrestore(substream, flags); | |
1090 | return err; | |
1091 | } | |
1092 | ||
e88e8ae6 TI |
1093 | EXPORT_SYMBOL(snd_pcm_suspend); |
1094 | ||
1da177e4 LT |
1095 | /** |
1096 | * snd_pcm_suspend_all | |
df8db936 | 1097 | * @pcm: the PCM instance |
1da177e4 LT |
1098 | * |
1099 | * Trigger SUSPEND to all substreams in the given pcm. | |
1100 | * After this call, all streams are changed to SUSPENDED state. | |
1101 | */ | |
877211f5 | 1102 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
1da177e4 | 1103 | { |
877211f5 | 1104 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1105 | int stream, err = 0; |
1106 | ||
603bf524 TI |
1107 | if (! pcm) |
1108 | return 0; | |
1109 | ||
1da177e4 | 1110 | for (stream = 0; stream < 2; stream++) { |
877211f5 TI |
1111 | for (substream = pcm->streams[stream].substream; |
1112 | substream; substream = substream->next) { | |
1da177e4 LT |
1113 | /* FIXME: the open/close code should lock this as well */ |
1114 | if (substream->runtime == NULL) | |
1115 | continue; | |
1116 | err = snd_pcm_suspend(substream); | |
1117 | if (err < 0 && err != -EBUSY) | |
1118 | return err; | |
1119 | } | |
1120 | } | |
1121 | return 0; | |
1122 | } | |
1123 | ||
e88e8ae6 TI |
1124 | EXPORT_SYMBOL(snd_pcm_suspend_all); |
1125 | ||
1da177e4 LT |
1126 | /* resume */ |
1127 | ||
877211f5 | 1128 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1129 | { |
877211f5 | 1130 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1131 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
1132 | return -ENOSYS; | |
1133 | runtime->trigger_master = substream; | |
1134 | return 0; | |
1135 | } | |
1136 | ||
877211f5 | 1137 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1138 | { |
877211f5 | 1139 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1140 | if (runtime->trigger_master != substream) |
1141 | return 0; | |
1142 | /* DMA not running previously? */ | |
1143 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && | |
1144 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || | |
1145 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) | |
1146 | return 0; | |
1147 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); | |
1148 | } | |
1149 | ||
877211f5 | 1150 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1151 | { |
1152 | if (substream->runtime->trigger_master == substream && | |
1153 | snd_pcm_running(substream)) | |
1154 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); | |
1155 | } | |
1156 | ||
877211f5 | 1157 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1158 | { |
877211f5 | 1159 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1160 | snd_pcm_trigger_tstamp(substream); |
1161 | if (substream->timer) | |
877211f5 TI |
1162 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
1163 | &runtime->trigger_tstamp); | |
1da177e4 LT |
1164 | runtime->status->state = runtime->status->suspended_state; |
1165 | if (runtime->sleep_min) | |
1166 | snd_pcm_tick_prepare(substream); | |
1167 | } | |
1168 | ||
1169 | static struct action_ops snd_pcm_action_resume = { | |
1170 | .pre_action = snd_pcm_pre_resume, | |
1171 | .do_action = snd_pcm_do_resume, | |
1172 | .undo_action = snd_pcm_undo_resume, | |
1173 | .post_action = snd_pcm_post_resume | |
1174 | }; | |
1175 | ||
877211f5 | 1176 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 | 1177 | { |
877211f5 | 1178 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1179 | int res; |
1180 | ||
1181 | snd_power_lock(card); | |
cbac4b0c | 1182 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1183 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
1184 | snd_power_unlock(card); | |
1185 | return res; | |
1186 | } | |
1187 | ||
1188 | #else | |
1189 | ||
877211f5 | 1190 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
1da177e4 LT |
1191 | { |
1192 | return -ENOSYS; | |
1193 | } | |
1194 | ||
1195 | #endif /* CONFIG_PM */ | |
1196 | ||
1197 | /* | |
1198 | * xrun ioctl | |
1199 | * | |
1200 | * Change the RUNNING stream(s) to XRUN state. | |
1201 | */ | |
877211f5 | 1202 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
1da177e4 | 1203 | { |
877211f5 TI |
1204 | struct snd_card *card = substream->pcm->card; |
1205 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
1206 | int result; |
1207 | ||
1208 | snd_power_lock(card); | |
1209 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1210 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1211 | if (result < 0) |
1212 | goto _unlock; | |
1213 | } | |
1214 | ||
1215 | snd_pcm_stream_lock_irq(substream); | |
1216 | switch (runtime->status->state) { | |
1217 | case SNDRV_PCM_STATE_XRUN: | |
1218 | result = 0; /* already there */ | |
1219 | break; | |
1220 | case SNDRV_PCM_STATE_RUNNING: | |
1221 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); | |
1222 | break; | |
1223 | default: | |
1224 | result = -EBADFD; | |
1225 | } | |
1226 | snd_pcm_stream_unlock_irq(substream); | |
1227 | _unlock: | |
1228 | snd_power_unlock(card); | |
1229 | return result; | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * reset ioctl | |
1234 | */ | |
877211f5 | 1235 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1236 | { |
877211f5 | 1237 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1238 | switch (runtime->status->state) { |
1239 | case SNDRV_PCM_STATE_RUNNING: | |
1240 | case SNDRV_PCM_STATE_PREPARED: | |
1241 | case SNDRV_PCM_STATE_PAUSED: | |
1242 | case SNDRV_PCM_STATE_SUSPENDED: | |
1243 | return 0; | |
1244 | default: | |
1245 | return -EBADFD; | |
1246 | } | |
1247 | } | |
1248 | ||
877211f5 | 1249 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1250 | { |
877211f5 | 1251 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1252 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
1253 | if (err < 0) | |
1254 | return err; | |
1255 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); | |
1256 | runtime->hw_ptr_base = 0; | |
877211f5 TI |
1257 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
1258 | runtime->status->hw_ptr % runtime->period_size; | |
1da177e4 LT |
1259 | runtime->silence_start = runtime->status->hw_ptr; |
1260 | runtime->silence_filled = 0; | |
1261 | return 0; | |
1262 | } | |
1263 | ||
877211f5 | 1264 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1265 | { |
877211f5 | 1266 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1267 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1268 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && | |
1269 | runtime->silence_size > 0) | |
1270 | snd_pcm_playback_silence(substream, ULONG_MAX); | |
1271 | } | |
1272 | ||
1273 | static struct action_ops snd_pcm_action_reset = { | |
1274 | .pre_action = snd_pcm_pre_reset, | |
1275 | .do_action = snd_pcm_do_reset, | |
1276 | .post_action = snd_pcm_post_reset | |
1277 | }; | |
1278 | ||
877211f5 | 1279 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
1da177e4 LT |
1280 | { |
1281 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * prepare ioctl | |
1286 | */ | |
877211f5 | 1287 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1288 | { |
877211f5 | 1289 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1290 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
1291 | return -EBADFD; | |
1292 | if (snd_pcm_running(substream)) | |
1293 | return -EBUSY; | |
1294 | return 0; | |
1295 | } | |
1296 | ||
877211f5 | 1297 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1298 | { |
1299 | int err; | |
1300 | err = substream->ops->prepare(substream); | |
1301 | if (err < 0) | |
1302 | return err; | |
1303 | return snd_pcm_do_reset(substream, 0); | |
1304 | } | |
1305 | ||
877211f5 | 1306 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1307 | { |
877211f5 | 1308 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1309 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
1310 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; | |
1311 | } | |
1312 | ||
1313 | static struct action_ops snd_pcm_action_prepare = { | |
1314 | .pre_action = snd_pcm_pre_prepare, | |
1315 | .do_action = snd_pcm_do_prepare, | |
1316 | .post_action = snd_pcm_post_prepare | |
1317 | }; | |
1318 | ||
1319 | /** | |
1320 | * snd_pcm_prepare | |
df8db936 TI |
1321 | * @substream: the PCM substream instance |
1322 | * | |
1323 | * Prepare the PCM substream to be triggerable. | |
1da177e4 | 1324 | */ |
bf1bbb5a | 1325 | static int snd_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 LT |
1326 | { |
1327 | int res; | |
877211f5 | 1328 | struct snd_card *card = substream->pcm->card; |
1da177e4 LT |
1329 | |
1330 | snd_power_lock(card); | |
cbac4b0c | 1331 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0) |
1da177e4 LT |
1332 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, substream, 0); |
1333 | snd_power_unlock(card); | |
1334 | return res; | |
1335 | } | |
1336 | ||
1337 | /* | |
1338 | * drain ioctl | |
1339 | */ | |
1340 | ||
877211f5 | 1341 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1342 | { |
1343 | if (substream->ffile->f_flags & O_NONBLOCK) | |
1344 | return -EAGAIN; | |
1345 | substream->runtime->trigger_master = substream; | |
1346 | return 0; | |
1347 | } | |
1348 | ||
877211f5 | 1349 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 | 1350 | { |
877211f5 | 1351 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
1352 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1353 | switch (runtime->status->state) { | |
1354 | case SNDRV_PCM_STATE_PREPARED: | |
1355 | /* start playback stream if possible */ | |
1356 | if (! snd_pcm_playback_empty(substream)) { | |
1357 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1358 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); | |
1359 | } | |
1360 | break; | |
1361 | case SNDRV_PCM_STATE_RUNNING: | |
1362 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; | |
1363 | break; | |
1364 | default: | |
1365 | break; | |
1366 | } | |
1367 | } else { | |
1368 | /* stop running stream */ | |
1369 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { | |
1370 | int state = snd_pcm_capture_avail(runtime) > 0 ? | |
1371 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; | |
1372 | snd_pcm_do_stop(substream, state); | |
1373 | snd_pcm_post_stop(substream, state); | |
1374 | } | |
1375 | } | |
1376 | return 0; | |
1377 | } | |
1378 | ||
877211f5 | 1379 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
1da177e4 LT |
1380 | { |
1381 | } | |
1382 | ||
1383 | static struct action_ops snd_pcm_action_drain_init = { | |
1384 | .pre_action = snd_pcm_pre_drain_init, | |
1385 | .do_action = snd_pcm_do_drain_init, | |
1386 | .post_action = snd_pcm_post_drain_init | |
1387 | }; | |
1388 | ||
1389 | struct drain_rec { | |
877211f5 | 1390 | struct snd_pcm_substream *substream; |
1da177e4 LT |
1391 | wait_queue_t wait; |
1392 | snd_pcm_uframes_t stop_threshold; | |
1393 | }; | |
1394 | ||
877211f5 | 1395 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
1da177e4 LT |
1396 | |
1397 | /* | |
1398 | * Drain the stream(s). | |
1399 | * When the substream is linked, sync until the draining of all playback streams | |
1400 | * is finished. | |
1401 | * After this call, all streams are supposed to be either SETUP or DRAINING | |
1402 | * (capture only) state. | |
1403 | */ | |
877211f5 | 1404 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
1da177e4 | 1405 | { |
877211f5 TI |
1406 | struct snd_card *card; |
1407 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
1408 | struct list_head *pos; |
1409 | int result = 0; | |
1410 | int i, num_drecs; | |
1411 | struct drain_rec *drec, drec_tmp, *d; | |
1412 | ||
1413 | snd_assert(substream != NULL, return -ENXIO); | |
1414 | card = substream->pcm->card; | |
1415 | runtime = substream->runtime; | |
1416 | ||
1417 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1418 | return -EBADFD; | |
1419 | ||
1da177e4 LT |
1420 | snd_power_lock(card); |
1421 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1422 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
21cb2a2e TI |
1423 | if (result < 0) { |
1424 | snd_power_unlock(card); | |
1425 | return result; | |
1426 | } | |
1da177e4 LT |
1427 | } |
1428 | ||
1429 | /* allocate temporary record for drain sync */ | |
21cb2a2e | 1430 | down_read(&snd_pcm_link_rwsem); |
1da177e4 LT |
1431 | if (snd_pcm_stream_linked(substream)) { |
1432 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); | |
1433 | if (! drec) { | |
21cb2a2e TI |
1434 | up_read(&snd_pcm_link_rwsem); |
1435 | snd_power_unlock(card); | |
1436 | return -ENOMEM; | |
1da177e4 LT |
1437 | } |
1438 | } else | |
1439 | drec = &drec_tmp; | |
1440 | ||
21cb2a2e | 1441 | /* count only playback streams */ |
1da177e4 LT |
1442 | num_drecs = 0; |
1443 | snd_pcm_group_for_each(pos, substream) { | |
877211f5 | 1444 | struct snd_pcm_substream *s = snd_pcm_group_substream_entry(pos); |
1da177e4 | 1445 | runtime = s->runtime; |
1da177e4 LT |
1446 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
1447 | d = &drec[num_drecs++]; | |
1448 | d->substream = s; | |
1449 | init_waitqueue_entry(&d->wait, current); | |
1450 | add_wait_queue(&runtime->sleep, &d->wait); | |
1451 | /* stop_threshold fixup to avoid endless loop when | |
1452 | * stop_threshold > buffer_size | |
1453 | */ | |
1454 | d->stop_threshold = runtime->stop_threshold; | |
1455 | if (runtime->stop_threshold > runtime->buffer_size) | |
1456 | runtime->stop_threshold = runtime->buffer_size; | |
1457 | } | |
1458 | } | |
21cb2a2e | 1459 | up_read(&snd_pcm_link_rwsem); |
1da177e4 | 1460 | if (! num_drecs) |
21cb2a2e TI |
1461 | goto _error; |
1462 | ||
1463 | snd_pcm_stream_lock_irq(substream); | |
1464 | /* resume pause */ | |
1465 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1466 | snd_pcm_pause(substream, 0); | |
1467 | ||
1468 | /* pre-start/stop - all running streams are changed to DRAINING state */ | |
1469 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); | |
1470 | if (result < 0) { | |
1471 | snd_pcm_stream_unlock_irq(substream); | |
1472 | goto _error; | |
1473 | } | |
1da177e4 LT |
1474 | |
1475 | for (;;) { | |
1476 | long tout; | |
1477 | if (signal_pending(current)) { | |
1478 | result = -ERESTARTSYS; | |
1479 | break; | |
1480 | } | |
21cb2a2e TI |
1481 | /* all finished? */ |
1482 | for (i = 0; i < num_drecs; i++) { | |
1483 | runtime = drec[i].substream->runtime; | |
1484 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) | |
1485 | break; | |
1486 | } | |
1487 | if (i == num_drecs) | |
1488 | break; /* yes, all drained */ | |
1489 | ||
1da177e4 LT |
1490 | set_current_state(TASK_INTERRUPTIBLE); |
1491 | snd_pcm_stream_unlock_irq(substream); | |
1492 | snd_power_unlock(card); | |
1493 | tout = schedule_timeout(10 * HZ); | |
1494 | snd_power_lock(card); | |
1495 | snd_pcm_stream_lock_irq(substream); | |
1496 | if (tout == 0) { | |
1497 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) | |
1498 | result = -ESTRPIPE; | |
1499 | else { | |
1500 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); | |
1501 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1502 | result = -EIO; | |
1503 | } | |
1504 | break; | |
1505 | } | |
1da177e4 | 1506 | } |
21cb2a2e TI |
1507 | |
1508 | snd_pcm_stream_unlock_irq(substream); | |
1509 | ||
1510 | _error: | |
1da177e4 LT |
1511 | for (i = 0; i < num_drecs; i++) { |
1512 | d = &drec[i]; | |
1513 | runtime = d->substream->runtime; | |
1514 | remove_wait_queue(&runtime->sleep, &d->wait); | |
1515 | runtime->stop_threshold = d->stop_threshold; | |
1516 | } | |
1517 | ||
1da177e4 LT |
1518 | if (drec != &drec_tmp) |
1519 | kfree(drec); | |
1da177e4 | 1520 | snd_power_unlock(card); |
1da177e4 LT |
1521 | |
1522 | return result; | |
1523 | } | |
1524 | ||
1525 | /* | |
1526 | * drop ioctl | |
1527 | * | |
1528 | * Immediately put all linked substreams into SETUP state. | |
1529 | */ | |
877211f5 | 1530 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
1da177e4 | 1531 | { |
877211f5 TI |
1532 | struct snd_pcm_runtime *runtime; |
1533 | struct snd_card *card; | |
1da177e4 LT |
1534 | int result = 0; |
1535 | ||
1536 | snd_assert(substream != NULL, return -ENXIO); | |
1537 | runtime = substream->runtime; | |
1538 | card = substream->pcm->card; | |
1539 | ||
1540 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
1541 | return -EBADFD; | |
1542 | ||
1543 | snd_power_lock(card); | |
1544 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { | |
cbac4b0c | 1545 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1546 | if (result < 0) |
1547 | goto _unlock; | |
1548 | } | |
1549 | ||
1550 | snd_pcm_stream_lock_irq(substream); | |
1551 | /* resume pause */ | |
1552 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) | |
1553 | snd_pcm_pause(substream, 0); | |
1554 | ||
1555 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); | |
1556 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ | |
1557 | snd_pcm_stream_unlock_irq(substream); | |
1558 | _unlock: | |
1559 | snd_power_unlock(card); | |
1560 | return result; | |
1561 | } | |
1562 | ||
1563 | ||
1564 | /* WARNING: Don't forget to fput back the file */ | |
1da177e4 LT |
1565 | static struct file *snd_pcm_file_fd(int fd) |
1566 | { | |
1567 | struct file *file; | |
1568 | struct inode *inode; | |
f87135f5 CL |
1569 | unsigned int minor; |
1570 | ||
1da177e4 LT |
1571 | file = fget(fd); |
1572 | if (!file) | |
1573 | return NULL; | |
1574 | inode = file->f_dentry->d_inode; | |
1575 | if (!S_ISCHR(inode->i_mode) || | |
1576 | imajor(inode) != snd_major) { | |
1577 | fput(file); | |
1578 | return NULL; | |
1579 | } | |
1580 | minor = iminor(inode); | |
f87135f5 CL |
1581 | if (!snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_PLAYBACK) && |
1582 | !snd_lookup_minor_data(minor, SNDRV_DEVICE_TYPE_PCM_CAPTURE)) { | |
1da177e4 LT |
1583 | fput(file); |
1584 | return NULL; | |
1585 | } | |
1586 | return file; | |
1587 | } | |
1588 | ||
1589 | /* | |
1590 | * PCM link handling | |
1591 | */ | |
877211f5 | 1592 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
1da177e4 LT |
1593 | { |
1594 | int res = 0; | |
1595 | struct file *file; | |
877211f5 TI |
1596 | struct snd_pcm_file *pcm_file; |
1597 | struct snd_pcm_substream *substream1; | |
1da177e4 LT |
1598 | |
1599 | file = snd_pcm_file_fd(fd); | |
1600 | if (!file) | |
1601 | return -EBADFD; | |
1602 | pcm_file = file->private_data; | |
1603 | substream1 = pcm_file->substream; | |
1604 | down_write(&snd_pcm_link_rwsem); | |
1605 | write_lock_irq(&snd_pcm_link_rwlock); | |
1606 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || | |
1607 | substream->runtime->status->state != substream1->runtime->status->state) { | |
1608 | res = -EBADFD; | |
1609 | goto _end; | |
1610 | } | |
1611 | if (snd_pcm_stream_linked(substream1)) { | |
1612 | res = -EALREADY; | |
1613 | goto _end; | |
1614 | } | |
1615 | if (!snd_pcm_stream_linked(substream)) { | |
877211f5 | 1616 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
1da177e4 LT |
1617 | if (substream->group == NULL) { |
1618 | res = -ENOMEM; | |
1619 | goto _end; | |
1620 | } | |
1621 | spin_lock_init(&substream->group->lock); | |
1622 | INIT_LIST_HEAD(&substream->group->substreams); | |
1623 | list_add_tail(&substream->link_list, &substream->group->substreams); | |
1624 | substream->group->count = 1; | |
1625 | } | |
1626 | list_add_tail(&substream1->link_list, &substream->group->substreams); | |
1627 | substream->group->count++; | |
1628 | substream1->group = substream->group; | |
1629 | _end: | |
1630 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1631 | up_write(&snd_pcm_link_rwsem); | |
1632 | fput(file); | |
1633 | return res; | |
1634 | } | |
1635 | ||
877211f5 | 1636 | static void relink_to_local(struct snd_pcm_substream *substream) |
1da177e4 LT |
1637 | { |
1638 | substream->group = &substream->self_group; | |
1639 | INIT_LIST_HEAD(&substream->self_group.substreams); | |
1640 | list_add_tail(&substream->link_list, &substream->self_group.substreams); | |
1641 | } | |
1642 | ||
877211f5 | 1643 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
1da177e4 LT |
1644 | { |
1645 | struct list_head *pos; | |
1646 | int res = 0; | |
1647 | ||
1648 | down_write(&snd_pcm_link_rwsem); | |
1649 | write_lock_irq(&snd_pcm_link_rwlock); | |
1650 | if (!snd_pcm_stream_linked(substream)) { | |
1651 | res = -EALREADY; | |
1652 | goto _end; | |
1653 | } | |
1654 | list_del(&substream->link_list); | |
1655 | substream->group->count--; | |
1656 | if (substream->group->count == 1) { /* detach the last stream, too */ | |
1657 | snd_pcm_group_for_each(pos, substream) { | |
1658 | relink_to_local(snd_pcm_group_substream_entry(pos)); | |
1659 | break; | |
1660 | } | |
1661 | kfree(substream->group); | |
1662 | } | |
1663 | relink_to_local(substream); | |
1664 | _end: | |
1665 | write_unlock_irq(&snd_pcm_link_rwlock); | |
1666 | up_write(&snd_pcm_link_rwsem); | |
1667 | return res; | |
1668 | } | |
1669 | ||
1670 | /* | |
1671 | * hw configurator | |
1672 | */ | |
877211f5 TI |
1673 | static int snd_pcm_hw_rule_mul(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_mul(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_div(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_div(hw_param_interval_c(params, rule->deps[0]), |
1687 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1688 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1689 | } | |
1690 | ||
877211f5 TI |
1691 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
1692 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1693 | { |
877211f5 | 1694 | struct snd_interval t; |
1da177e4 LT |
1695 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
1696 | hw_param_interval_c(params, rule->deps[1]), | |
1697 | (unsigned long) rule->private, &t); | |
1698 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1699 | } | |
1700 | ||
877211f5 TI |
1701 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
1702 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1703 | { |
877211f5 | 1704 | struct snd_interval t; |
1da177e4 LT |
1705 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
1706 | (unsigned long) rule->private, | |
1707 | hw_param_interval_c(params, rule->deps[1]), &t); | |
1708 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1709 | } | |
1710 | ||
877211f5 TI |
1711 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
1712 | struct snd_pcm_hw_rule *rule) | |
1da177e4 LT |
1713 | { |
1714 | unsigned int k; | |
877211f5 TI |
1715 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
1716 | struct snd_mask m; | |
1717 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); | |
1da177e4 LT |
1718 | snd_mask_any(&m); |
1719 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1720 | int bits; | |
1721 | if (! snd_mask_test(mask, k)) | |
1722 | continue; | |
1723 | bits = snd_pcm_format_physical_width(k); | |
1724 | if (bits <= 0) | |
1725 | continue; /* ignore invalid formats */ | |
1726 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) | |
1727 | snd_mask_reset(&m, k); | |
1728 | } | |
1729 | return snd_mask_refine(mask, &m); | |
1730 | } | |
1731 | ||
877211f5 TI |
1732 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
1733 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1734 | { |
877211f5 | 1735 | struct snd_interval t; |
1da177e4 LT |
1736 | unsigned int k; |
1737 | t.min = UINT_MAX; | |
1738 | t.max = 0; | |
1739 | t.openmin = 0; | |
1740 | t.openmax = 0; | |
1741 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { | |
1742 | int bits; | |
1743 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) | |
1744 | continue; | |
1745 | bits = snd_pcm_format_physical_width(k); | |
1746 | if (bits <= 0) | |
1747 | continue; /* ignore invalid formats */ | |
1748 | if (t.min > (unsigned)bits) | |
1749 | t.min = bits; | |
1750 | if (t.max < (unsigned)bits) | |
1751 | t.max = bits; | |
1752 | } | |
1753 | t.integer = 1; | |
1754 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1755 | } | |
1756 | ||
1757 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 | |
1758 | #error "Change this table" | |
1759 | #endif | |
1760 | ||
1761 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
1762 | 48000, 64000, 88200, 96000, 176400, 192000 }; | |
1763 | ||
877211f5 TI |
1764 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
1765 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1766 | { |
877211f5 | 1767 | struct snd_pcm_hardware *hw = rule->private; |
1da177e4 LT |
1768 | return snd_interval_list(hw_param_interval(params, rule->var), |
1769 | ARRAY_SIZE(rates), rates, hw->rates); | |
1770 | } | |
1771 | ||
877211f5 TI |
1772 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
1773 | struct snd_pcm_hw_rule *rule) | |
1da177e4 | 1774 | { |
877211f5 TI |
1775 | struct snd_interval t; |
1776 | struct snd_pcm_substream *substream = rule->private; | |
1da177e4 LT |
1777 | t.min = 0; |
1778 | t.max = substream->buffer_bytes_max; | |
1779 | t.openmin = 0; | |
1780 | t.openmax = 0; | |
1781 | t.integer = 1; | |
1782 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); | |
1783 | } | |
1784 | ||
877211f5 | 1785 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
1da177e4 | 1786 | { |
877211f5 TI |
1787 | struct snd_pcm_runtime *runtime = substream->runtime; |
1788 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; | |
1da177e4 LT |
1789 | int k, err; |
1790 | ||
1791 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { | |
1792 | snd_mask_any(constrs_mask(constrs, k)); | |
1793 | } | |
1794 | ||
1795 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { | |
1796 | snd_interval_any(constrs_interval(constrs, k)); | |
1797 | } | |
1798 | ||
1799 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); | |
1800 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); | |
1801 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); | |
1802 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); | |
1803 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); | |
1804 | ||
1805 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, | |
1806 | snd_pcm_hw_rule_format, NULL, | |
1807 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1808 | if (err < 0) | |
1809 | return err; | |
1810 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1811 | snd_pcm_hw_rule_sample_bits, NULL, | |
1812 | SNDRV_PCM_HW_PARAM_FORMAT, | |
1813 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1814 | if (err < 0) | |
1815 | return err; | |
1816 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, | |
1817 | snd_pcm_hw_rule_div, NULL, | |
1818 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1819 | if (err < 0) | |
1820 | return err; | |
1821 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1822 | snd_pcm_hw_rule_mul, NULL, | |
1823 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); | |
1824 | if (err < 0) | |
1825 | return err; | |
1826 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1827 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1828 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1829 | if (err < 0) | |
1830 | return err; | |
1831 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, | |
1832 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1833 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1837 | snd_pcm_hw_rule_div, NULL, | |
1838 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); | |
1839 | if (err < 0) | |
1840 | return err; | |
1841 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1842 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1843 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); | |
1844 | if (err < 0) | |
1845 | return err; | |
1846 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1847 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1848 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); | |
1849 | if (err < 0) | |
1850 | return err; | |
1851 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, | |
1852 | snd_pcm_hw_rule_div, NULL, | |
1853 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); | |
1854 | if (err < 0) | |
1855 | return err; | |
1856 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1857 | snd_pcm_hw_rule_div, NULL, | |
1858 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1859 | if (err < 0) | |
1860 | return err; | |
1861 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1862 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1863 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, | |
1867 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1868 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1869 | if (err < 0) | |
1870 | return err; | |
1871 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1872 | snd_pcm_hw_rule_mul, NULL, | |
1873 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); | |
1874 | if (err < 0) | |
1875 | return err; | |
1876 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1877 | snd_pcm_hw_rule_mulkdiv, (void*) 8, | |
1878 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1879 | if (err < 0) | |
1880 | return err; | |
1881 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, | |
1882 | snd_pcm_hw_rule_muldivk, (void*) 1000000, | |
1883 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1884 | if (err < 0) | |
1885 | return err; | |
1886 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1887 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1888 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1889 | if (err < 0) | |
1890 | return err; | |
1891 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1892 | snd_pcm_hw_rule_muldivk, (void*) 8, | |
1893 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); | |
1894 | if (err < 0) | |
1895 | return err; | |
1896 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, | |
1897 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1898 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1899 | if (err < 0) | |
1900 | return err; | |
1901 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
1902 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, | |
1903 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); | |
1904 | if (err < 0) | |
1905 | return err; | |
1906 | return 0; | |
1907 | } | |
1908 | ||
877211f5 | 1909 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
1da177e4 | 1910 | { |
877211f5 TI |
1911 | struct snd_pcm_runtime *runtime = substream->runtime; |
1912 | struct snd_pcm_hardware *hw = &runtime->hw; | |
1da177e4 LT |
1913 | int err; |
1914 | unsigned int mask = 0; | |
1915 | ||
1916 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1917 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; | |
1918 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1919 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; | |
1920 | if (hw->info & SNDRV_PCM_INFO_MMAP) { | |
1921 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) | |
1922 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; | |
1923 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) | |
1924 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; | |
1925 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) | |
1926 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; | |
1927 | } | |
1928 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); | |
1929 | snd_assert(err >= 0, return -EINVAL); | |
1930 | ||
1931 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); | |
1932 | snd_assert(err >= 0, return -EINVAL); | |
1933 | ||
1934 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); | |
1935 | snd_assert(err >= 0, return -EINVAL); | |
1936 | ||
1937 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, | |
1938 | hw->channels_min, hw->channels_max); | |
1939 | snd_assert(err >= 0, return -EINVAL); | |
1940 | ||
1941 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, | |
1942 | hw->rate_min, hw->rate_max); | |
1943 | snd_assert(err >= 0, return -EINVAL); | |
1944 | ||
1945 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
1946 | hw->period_bytes_min, hw->period_bytes_max); | |
1947 | snd_assert(err >= 0, return -EINVAL); | |
1948 | ||
1949 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, | |
1950 | hw->periods_min, hw->periods_max); | |
1951 | snd_assert(err >= 0, return -EINVAL); | |
1952 | ||
1953 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1954 | hw->period_bytes_min, hw->buffer_bytes_max); | |
1955 | snd_assert(err >= 0, return -EINVAL); | |
1956 | ||
1957 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
1958 | snd_pcm_hw_rule_buffer_bytes_max, substream, | |
1959 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); | |
1960 | if (err < 0) | |
1961 | return err; | |
1962 | ||
1963 | /* FIXME: remove */ | |
1964 | if (runtime->dma_bytes) { | |
1965 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); | |
1966 | snd_assert(err >= 0, return -EINVAL); | |
1967 | } | |
1968 | ||
1969 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { | |
1970 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, | |
1971 | snd_pcm_hw_rule_rate, hw, | |
1972 | SNDRV_PCM_HW_PARAM_RATE, -1); | |
1973 | if (err < 0) | |
1974 | return err; | |
1975 | } | |
1976 | ||
1977 | /* FIXME: this belong to lowlevel */ | |
1978 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME, | |
1979 | 1000000 / HZ, 1000000 / HZ); | |
1980 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); | |
1981 | ||
1982 | return 0; | |
1983 | } | |
1984 | ||
877211f5 TI |
1985 | static void snd_pcm_add_file(struct snd_pcm_str *str, |
1986 | struct snd_pcm_file *pcm_file) | |
1da177e4 LT |
1987 | { |
1988 | pcm_file->next = str->files; | |
1989 | str->files = pcm_file; | |
1990 | } | |
1991 | ||
877211f5 TI |
1992 | static void snd_pcm_remove_file(struct snd_pcm_str *str, |
1993 | struct snd_pcm_file *pcm_file) | |
1da177e4 | 1994 | { |
877211f5 | 1995 | struct snd_pcm_file * pcm_file1; |
1da177e4 LT |
1996 | if (str->files == pcm_file) { |
1997 | str->files = pcm_file->next; | |
1998 | } else { | |
1999 | pcm_file1 = str->files; | |
2000 | while (pcm_file1 && pcm_file1->next != pcm_file) | |
2001 | pcm_file1 = pcm_file1->next; | |
2002 | if (pcm_file1 != NULL) | |
2003 | pcm_file1->next = pcm_file->next; | |
2004 | } | |
2005 | } | |
2006 | ||
3bf75f9b | 2007 | static void pcm_release_private(struct snd_pcm_substream *substream) |
1da177e4 | 2008 | { |
3bf75f9b | 2009 | struct snd_pcm_file *pcm_file = substream->file; |
1da177e4 | 2010 | |
1da177e4 | 2011 | snd_pcm_unlink(substream); |
3bf75f9b TI |
2012 | snd_pcm_remove_file(substream->pstr, pcm_file); |
2013 | kfree(pcm_file); | |
2014 | } | |
2015 | ||
2016 | void snd_pcm_release_substream(struct snd_pcm_substream *substream) | |
2017 | { | |
2018 | snd_pcm_drop(substream); | |
3bf75f9b | 2019 | if (substream->hw_opened) { |
1da177e4 LT |
2020 | if (substream->ops->hw_free != NULL) |
2021 | substream->ops->hw_free(substream); | |
2022 | substream->ops->close(substream); | |
3bf75f9b | 2023 | substream->hw_opened = 0; |
1da177e4 | 2024 | } |
1576274d TI |
2025 | if (substream->pcm_release) { |
2026 | substream->pcm_release(substream); | |
2027 | substream->pcm_release = NULL; | |
2028 | } | |
3bf75f9b TI |
2029 | snd_pcm_detach_substream(substream); |
2030 | } | |
2031 | ||
e88e8ae6 TI |
2032 | EXPORT_SYMBOL(snd_pcm_release_substream); |
2033 | ||
3bf75f9b TI |
2034 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, |
2035 | struct file *file, | |
2036 | struct snd_pcm_substream **rsubstream) | |
2037 | { | |
2038 | struct snd_pcm_substream *substream; | |
2039 | int err; | |
2040 | ||
2041 | err = snd_pcm_attach_substream(pcm, stream, file, &substream); | |
2042 | if (err < 0) | |
2043 | return err; | |
2044 | substream->no_mmap_ctrl = 0; | |
2045 | err = snd_pcm_hw_constraints_init(substream); | |
2046 | if (err < 0) { | |
2047 | snd_printd("snd_pcm_hw_constraints_init failed\n"); | |
2048 | goto error; | |
2049 | } | |
2050 | ||
2051 | if ((err = substream->ops->open(substream)) < 0) | |
2052 | goto error; | |
2053 | ||
2054 | substream->hw_opened = 1; | |
2055 | ||
2056 | err = snd_pcm_hw_constraints_complete(substream); | |
2057 | if (err < 0) { | |
2058 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); | |
2059 | goto error; | |
2060 | } | |
2061 | ||
2062 | *rsubstream = substream; | |
1da177e4 | 2063 | return 0; |
3bf75f9b TI |
2064 | |
2065 | error: | |
2066 | snd_pcm_release_substream(substream); | |
2067 | return err; | |
1da177e4 LT |
2068 | } |
2069 | ||
e88e8ae6 TI |
2070 | EXPORT_SYMBOL(snd_pcm_open_substream); |
2071 | ||
1da177e4 | 2072 | static int snd_pcm_open_file(struct file *file, |
877211f5 | 2073 | struct snd_pcm *pcm, |
1da177e4 | 2074 | int stream, |
877211f5 | 2075 | struct snd_pcm_file **rpcm_file) |
1da177e4 | 2076 | { |
877211f5 TI |
2077 | struct snd_pcm_file *pcm_file; |
2078 | struct snd_pcm_substream *substream; | |
2079 | struct snd_pcm_str *str; | |
3bf75f9b | 2080 | int err; |
1da177e4 LT |
2081 | |
2082 | snd_assert(rpcm_file != NULL, return -EINVAL); | |
2083 | *rpcm_file = NULL; | |
2084 | ||
3bf75f9b TI |
2085 | err = snd_pcm_open_substream(pcm, stream, file, &substream); |
2086 | if (err < 0) | |
2087 | return err; | |
2088 | ||
ca2c0966 | 2089 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
1da177e4 | 2090 | if (pcm_file == NULL) { |
3bf75f9b | 2091 | snd_pcm_release_substream(substream); |
1da177e4 LT |
2092 | return -ENOMEM; |
2093 | } | |
1da177e4 LT |
2094 | str = substream->pstr; |
2095 | substream->file = pcm_file; | |
3bf75f9b | 2096 | substream->pcm_release = pcm_release_private; |
1da177e4 | 2097 | pcm_file->substream = substream; |
1da177e4 LT |
2098 | snd_pcm_add_file(str, pcm_file); |
2099 | ||
1da177e4 LT |
2100 | file->private_data = pcm_file; |
2101 | *rpcm_file = pcm_file; | |
2102 | return 0; | |
2103 | } | |
2104 | ||
f87135f5 CL |
2105 | static int snd_pcm_playback_open(struct inode *inode, struct file *file) |
2106 | { | |
2107 | struct snd_pcm *pcm; | |
2108 | ||
2109 | pcm = snd_lookup_minor_data(iminor(inode), | |
2110 | SNDRV_DEVICE_TYPE_PCM_PLAYBACK); | |
2111 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK); | |
2112 | } | |
2113 | ||
2114 | static int snd_pcm_capture_open(struct inode *inode, struct file *file) | |
1da177e4 | 2115 | { |
877211f5 | 2116 | struct snd_pcm *pcm; |
f87135f5 CL |
2117 | |
2118 | pcm = snd_lookup_minor_data(iminor(inode), | |
2119 | SNDRV_DEVICE_TYPE_PCM_CAPTURE); | |
2120 | return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE); | |
2121 | } | |
2122 | ||
2123 | static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream) | |
2124 | { | |
2125 | int err; | |
877211f5 | 2126 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2127 | wait_queue_t wait; |
2128 | ||
1da177e4 LT |
2129 | if (pcm == NULL) { |
2130 | err = -ENODEV; | |
2131 | goto __error1; | |
2132 | } | |
2133 | err = snd_card_file_add(pcm->card, file); | |
2134 | if (err < 0) | |
2135 | goto __error1; | |
2136 | if (!try_module_get(pcm->card->module)) { | |
2137 | err = -EFAULT; | |
2138 | goto __error2; | |
2139 | } | |
2140 | init_waitqueue_entry(&wait, current); | |
2141 | add_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2142 | mutex_lock(&pcm->open_mutex); |
1da177e4 | 2143 | while (1) { |
f87135f5 | 2144 | err = snd_pcm_open_file(file, pcm, stream, &pcm_file); |
1da177e4 LT |
2145 | if (err >= 0) |
2146 | break; | |
2147 | if (err == -EAGAIN) { | |
2148 | if (file->f_flags & O_NONBLOCK) { | |
2149 | err = -EBUSY; | |
2150 | break; | |
2151 | } | |
2152 | } else | |
2153 | break; | |
2154 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 2155 | mutex_unlock(&pcm->open_mutex); |
1da177e4 | 2156 | schedule(); |
1a60d4c5 | 2157 | mutex_lock(&pcm->open_mutex); |
1da177e4 LT |
2158 | if (signal_pending(current)) { |
2159 | err = -ERESTARTSYS; | |
2160 | break; | |
2161 | } | |
2162 | } | |
2163 | remove_wait_queue(&pcm->open_wait, &wait); | |
1a60d4c5 | 2164 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2165 | if (err < 0) |
2166 | goto __error; | |
2167 | return err; | |
2168 | ||
2169 | __error: | |
2170 | module_put(pcm->card->module); | |
2171 | __error2: | |
2172 | snd_card_file_remove(pcm->card, file); | |
2173 | __error1: | |
2174 | return err; | |
2175 | } | |
2176 | ||
2177 | static int snd_pcm_release(struct inode *inode, struct file *file) | |
2178 | { | |
877211f5 TI |
2179 | struct snd_pcm *pcm; |
2180 | struct snd_pcm_substream *substream; | |
2181 | struct snd_pcm_file *pcm_file; | |
1da177e4 LT |
2182 | |
2183 | pcm_file = file->private_data; | |
2184 | substream = pcm_file->substream; | |
2185 | snd_assert(substream != NULL, return -ENXIO); | |
2186 | snd_assert(!atomic_read(&substream->runtime->mmap_count), ); | |
2187 | pcm = substream->pcm; | |
1da177e4 | 2188 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
1a60d4c5 | 2189 | mutex_lock(&pcm->open_mutex); |
3bf75f9b | 2190 | snd_pcm_release_substream(substream); |
1a60d4c5 | 2191 | mutex_unlock(&pcm->open_mutex); |
1da177e4 LT |
2192 | wake_up(&pcm->open_wait); |
2193 | module_put(pcm->card->module); | |
2194 | snd_card_file_remove(pcm->card, file); | |
2195 | return 0; | |
2196 | } | |
2197 | ||
877211f5 TI |
2198 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
2199 | snd_pcm_uframes_t frames) | |
1da177e4 | 2200 | { |
877211f5 | 2201 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2202 | snd_pcm_sframes_t appl_ptr; |
2203 | snd_pcm_sframes_t ret; | |
2204 | snd_pcm_sframes_t hw_avail; | |
2205 | ||
2206 | if (frames == 0) | |
2207 | return 0; | |
2208 | ||
2209 | snd_pcm_stream_lock_irq(substream); | |
2210 | switch (runtime->status->state) { | |
2211 | case SNDRV_PCM_STATE_PREPARED: | |
2212 | break; | |
2213 | case SNDRV_PCM_STATE_DRAINING: | |
2214 | case SNDRV_PCM_STATE_RUNNING: | |
2215 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2216 | break; | |
2217 | /* Fall through */ | |
2218 | case SNDRV_PCM_STATE_XRUN: | |
2219 | ret = -EPIPE; | |
2220 | goto __end; | |
2221 | default: | |
2222 | ret = -EBADFD; | |
2223 | goto __end; | |
2224 | } | |
2225 | ||
2226 | hw_avail = snd_pcm_playback_hw_avail(runtime); | |
2227 | if (hw_avail <= 0) { | |
2228 | ret = 0; | |
2229 | goto __end; | |
2230 | } | |
2231 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2232 | frames = hw_avail; | |
2233 | else | |
2234 | frames -= frames % runtime->xfer_align; | |
2235 | appl_ptr = runtime->control->appl_ptr - frames; | |
2236 | if (appl_ptr < 0) | |
2237 | appl_ptr += runtime->boundary; | |
2238 | runtime->control->appl_ptr = appl_ptr; | |
2239 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2240 | runtime->sleep_min) | |
2241 | snd_pcm_tick_prepare(substream); | |
2242 | ret = frames; | |
2243 | __end: | |
2244 | snd_pcm_stream_unlock_irq(substream); | |
2245 | return ret; | |
2246 | } | |
2247 | ||
877211f5 TI |
2248 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
2249 | snd_pcm_uframes_t frames) | |
1da177e4 | 2250 | { |
877211f5 | 2251 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2252 | snd_pcm_sframes_t appl_ptr; |
2253 | snd_pcm_sframes_t ret; | |
2254 | snd_pcm_sframes_t hw_avail; | |
2255 | ||
2256 | if (frames == 0) | |
2257 | return 0; | |
2258 | ||
2259 | snd_pcm_stream_lock_irq(substream); | |
2260 | switch (runtime->status->state) { | |
2261 | case SNDRV_PCM_STATE_PREPARED: | |
2262 | case SNDRV_PCM_STATE_DRAINING: | |
2263 | break; | |
2264 | case SNDRV_PCM_STATE_RUNNING: | |
2265 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2266 | break; | |
2267 | /* Fall through */ | |
2268 | case SNDRV_PCM_STATE_XRUN: | |
2269 | ret = -EPIPE; | |
2270 | goto __end; | |
2271 | default: | |
2272 | ret = -EBADFD; | |
2273 | goto __end; | |
2274 | } | |
2275 | ||
2276 | hw_avail = snd_pcm_capture_hw_avail(runtime); | |
2277 | if (hw_avail <= 0) { | |
2278 | ret = 0; | |
2279 | goto __end; | |
2280 | } | |
2281 | if (frames > (snd_pcm_uframes_t)hw_avail) | |
2282 | frames = hw_avail; | |
2283 | else | |
2284 | frames -= frames % runtime->xfer_align; | |
2285 | appl_ptr = runtime->control->appl_ptr - frames; | |
2286 | if (appl_ptr < 0) | |
2287 | appl_ptr += runtime->boundary; | |
2288 | runtime->control->appl_ptr = appl_ptr; | |
2289 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2290 | runtime->sleep_min) | |
2291 | snd_pcm_tick_prepare(substream); | |
2292 | ret = frames; | |
2293 | __end: | |
2294 | snd_pcm_stream_unlock_irq(substream); | |
2295 | return ret; | |
2296 | } | |
2297 | ||
877211f5 TI |
2298 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
2299 | snd_pcm_uframes_t frames) | |
1da177e4 | 2300 | { |
877211f5 | 2301 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2302 | snd_pcm_sframes_t appl_ptr; |
2303 | snd_pcm_sframes_t ret; | |
2304 | snd_pcm_sframes_t avail; | |
2305 | ||
2306 | if (frames == 0) | |
2307 | return 0; | |
2308 | ||
2309 | snd_pcm_stream_lock_irq(substream); | |
2310 | switch (runtime->status->state) { | |
2311 | case SNDRV_PCM_STATE_PREPARED: | |
2312 | case SNDRV_PCM_STATE_PAUSED: | |
2313 | break; | |
2314 | case SNDRV_PCM_STATE_DRAINING: | |
2315 | case SNDRV_PCM_STATE_RUNNING: | |
2316 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2317 | break; | |
2318 | /* Fall through */ | |
2319 | case SNDRV_PCM_STATE_XRUN: | |
2320 | ret = -EPIPE; | |
2321 | goto __end; | |
2322 | default: | |
2323 | ret = -EBADFD; | |
2324 | goto __end; | |
2325 | } | |
2326 | ||
2327 | avail = snd_pcm_playback_avail(runtime); | |
2328 | if (avail <= 0) { | |
2329 | ret = 0; | |
2330 | goto __end; | |
2331 | } | |
2332 | if (frames > (snd_pcm_uframes_t)avail) | |
2333 | frames = avail; | |
2334 | else | |
2335 | frames -= frames % runtime->xfer_align; | |
2336 | appl_ptr = runtime->control->appl_ptr + frames; | |
2337 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2338 | appl_ptr -= runtime->boundary; | |
2339 | runtime->control->appl_ptr = appl_ptr; | |
2340 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2341 | runtime->sleep_min) | |
2342 | snd_pcm_tick_prepare(substream); | |
2343 | ret = frames; | |
2344 | __end: | |
2345 | snd_pcm_stream_unlock_irq(substream); | |
2346 | return ret; | |
2347 | } | |
2348 | ||
877211f5 TI |
2349 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
2350 | snd_pcm_uframes_t frames) | |
1da177e4 | 2351 | { |
877211f5 | 2352 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2353 | snd_pcm_sframes_t appl_ptr; |
2354 | snd_pcm_sframes_t ret; | |
2355 | snd_pcm_sframes_t avail; | |
2356 | ||
2357 | if (frames == 0) | |
2358 | return 0; | |
2359 | ||
2360 | snd_pcm_stream_lock_irq(substream); | |
2361 | switch (runtime->status->state) { | |
2362 | case SNDRV_PCM_STATE_PREPARED: | |
2363 | case SNDRV_PCM_STATE_DRAINING: | |
2364 | case SNDRV_PCM_STATE_PAUSED: | |
2365 | break; | |
2366 | case SNDRV_PCM_STATE_RUNNING: | |
2367 | if (snd_pcm_update_hw_ptr(substream) >= 0) | |
2368 | break; | |
2369 | /* Fall through */ | |
2370 | case SNDRV_PCM_STATE_XRUN: | |
2371 | ret = -EPIPE; | |
2372 | goto __end; | |
2373 | default: | |
2374 | ret = -EBADFD; | |
2375 | goto __end; | |
2376 | } | |
2377 | ||
2378 | avail = snd_pcm_capture_avail(runtime); | |
2379 | if (avail <= 0) { | |
2380 | ret = 0; | |
2381 | goto __end; | |
2382 | } | |
2383 | if (frames > (snd_pcm_uframes_t)avail) | |
2384 | frames = avail; | |
2385 | else | |
2386 | frames -= frames % runtime->xfer_align; | |
2387 | appl_ptr = runtime->control->appl_ptr + frames; | |
2388 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) | |
2389 | appl_ptr -= runtime->boundary; | |
2390 | runtime->control->appl_ptr = appl_ptr; | |
2391 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && | |
2392 | runtime->sleep_min) | |
2393 | snd_pcm_tick_prepare(substream); | |
2394 | ret = frames; | |
2395 | __end: | |
2396 | snd_pcm_stream_unlock_irq(substream); | |
2397 | return ret; | |
2398 | } | |
2399 | ||
877211f5 | 2400 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
1da177e4 | 2401 | { |
877211f5 | 2402 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2403 | int err; |
2404 | ||
2405 | snd_pcm_stream_lock_irq(substream); | |
2406 | switch (runtime->status->state) { | |
2407 | case SNDRV_PCM_STATE_DRAINING: | |
2408 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2409 | goto __badfd; | |
2410 | case SNDRV_PCM_STATE_RUNNING: | |
2411 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2412 | break; | |
2413 | /* Fall through */ | |
2414 | case SNDRV_PCM_STATE_PREPARED: | |
2415 | case SNDRV_PCM_STATE_SUSPENDED: | |
2416 | err = 0; | |
2417 | break; | |
2418 | case SNDRV_PCM_STATE_XRUN: | |
2419 | err = -EPIPE; | |
2420 | break; | |
2421 | default: | |
2422 | __badfd: | |
2423 | err = -EBADFD; | |
2424 | break; | |
2425 | } | |
2426 | snd_pcm_stream_unlock_irq(substream); | |
2427 | return err; | |
2428 | } | |
2429 | ||
877211f5 TI |
2430 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
2431 | snd_pcm_sframes_t __user *res) | |
1da177e4 | 2432 | { |
877211f5 | 2433 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
2434 | int err; |
2435 | snd_pcm_sframes_t n = 0; | |
2436 | ||
2437 | snd_pcm_stream_lock_irq(substream); | |
2438 | switch (runtime->status->state) { | |
2439 | case SNDRV_PCM_STATE_DRAINING: | |
2440 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
2441 | goto __badfd; | |
2442 | case SNDRV_PCM_STATE_RUNNING: | |
2443 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) | |
2444 | break; | |
2445 | /* Fall through */ | |
2446 | case SNDRV_PCM_STATE_PREPARED: | |
2447 | case SNDRV_PCM_STATE_SUSPENDED: | |
2448 | err = 0; | |
2449 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
2450 | n = snd_pcm_playback_hw_avail(runtime); | |
2451 | else | |
2452 | n = snd_pcm_capture_avail(runtime); | |
2453 | break; | |
2454 | case SNDRV_PCM_STATE_XRUN: | |
2455 | err = -EPIPE; | |
2456 | break; | |
2457 | default: | |
2458 | __badfd: | |
2459 | err = -EBADFD; | |
2460 | break; | |
2461 | } | |
2462 | snd_pcm_stream_unlock_irq(substream); | |
2463 | if (!err) | |
2464 | if (put_user(n, res)) | |
2465 | err = -EFAULT; | |
2466 | return err; | |
2467 | } | |
2468 | ||
877211f5 TI |
2469 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
2470 | struct snd_pcm_sync_ptr __user *_sync_ptr) | |
1da177e4 | 2471 | { |
877211f5 TI |
2472 | struct snd_pcm_runtime *runtime = substream->runtime; |
2473 | struct snd_pcm_sync_ptr sync_ptr; | |
2474 | volatile struct snd_pcm_mmap_status *status; | |
2475 | volatile struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
2476 | int err; |
2477 | ||
2478 | memset(&sync_ptr, 0, sizeof(sync_ptr)); | |
2479 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) | |
2480 | return -EFAULT; | |
877211f5 | 2481 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
2482 | return -EFAULT; |
2483 | status = runtime->status; | |
2484 | control = runtime->control; | |
2485 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { | |
2486 | err = snd_pcm_hwsync(substream); | |
2487 | if (err < 0) | |
2488 | return err; | |
2489 | } | |
2490 | snd_pcm_stream_lock_irq(substream); | |
2491 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) | |
2492 | control->appl_ptr = sync_ptr.c.control.appl_ptr; | |
2493 | else | |
2494 | sync_ptr.c.control.appl_ptr = control->appl_ptr; | |
2495 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) | |
2496 | control->avail_min = sync_ptr.c.control.avail_min; | |
2497 | else | |
2498 | sync_ptr.c.control.avail_min = control->avail_min; | |
2499 | sync_ptr.s.status.state = status->state; | |
2500 | sync_ptr.s.status.hw_ptr = status->hw_ptr; | |
2501 | sync_ptr.s.status.tstamp = status->tstamp; | |
2502 | sync_ptr.s.status.suspended_state = status->suspended_state; | |
2503 | snd_pcm_stream_unlock_irq(substream); | |
2504 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) | |
2505 | return -EFAULT; | |
2506 | return 0; | |
2507 | } | |
2508 | ||
877211f5 | 2509 | static int snd_pcm_common_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2510 | unsigned int cmd, void __user *arg) |
2511 | { | |
2512 | snd_assert(substream != NULL, return -ENXIO); | |
2513 | ||
2514 | switch (cmd) { | |
2515 | case SNDRV_PCM_IOCTL_PVERSION: | |
2516 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; | |
2517 | case SNDRV_PCM_IOCTL_INFO: | |
2518 | return snd_pcm_info_user(substream, arg); | |
07799e75 | 2519 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
1da177e4 | 2520 | return 0; |
1da177e4 LT |
2521 | case SNDRV_PCM_IOCTL_HW_REFINE: |
2522 | return snd_pcm_hw_refine_user(substream, arg); | |
2523 | case SNDRV_PCM_IOCTL_HW_PARAMS: | |
2524 | return snd_pcm_hw_params_user(substream, arg); | |
2525 | case SNDRV_PCM_IOCTL_HW_FREE: | |
2526 | return snd_pcm_hw_free(substream); | |
2527 | case SNDRV_PCM_IOCTL_SW_PARAMS: | |
2528 | return snd_pcm_sw_params_user(substream, arg); | |
2529 | case SNDRV_PCM_IOCTL_STATUS: | |
2530 | return snd_pcm_status_user(substream, arg); | |
2531 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: | |
2532 | return snd_pcm_channel_info_user(substream, arg); | |
2533 | case SNDRV_PCM_IOCTL_PREPARE: | |
2534 | return snd_pcm_prepare(substream); | |
2535 | case SNDRV_PCM_IOCTL_RESET: | |
2536 | return snd_pcm_reset(substream); | |
2537 | case SNDRV_PCM_IOCTL_START: | |
2538 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); | |
2539 | case SNDRV_PCM_IOCTL_LINK: | |
2540 | return snd_pcm_link(substream, (int)(unsigned long) arg); | |
2541 | case SNDRV_PCM_IOCTL_UNLINK: | |
2542 | return snd_pcm_unlink(substream); | |
2543 | case SNDRV_PCM_IOCTL_RESUME: | |
2544 | return snd_pcm_resume(substream); | |
2545 | case SNDRV_PCM_IOCTL_XRUN: | |
2546 | return snd_pcm_xrun(substream); | |
2547 | case SNDRV_PCM_IOCTL_HWSYNC: | |
2548 | return snd_pcm_hwsync(substream); | |
2549 | case SNDRV_PCM_IOCTL_DELAY: | |
2550 | return snd_pcm_delay(substream, arg); | |
2551 | case SNDRV_PCM_IOCTL_SYNC_PTR: | |
2552 | return snd_pcm_sync_ptr(substream, arg); | |
59d48582 | 2553 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
2554 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
2555 | return snd_pcm_hw_refine_old_user(substream, arg); | |
2556 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: | |
2557 | return snd_pcm_hw_params_old_user(substream, arg); | |
59d48582 | 2558 | #endif |
1da177e4 LT |
2559 | case SNDRV_PCM_IOCTL_DRAIN: |
2560 | return snd_pcm_drain(substream); | |
2561 | case SNDRV_PCM_IOCTL_DROP: | |
2562 | return snd_pcm_drop(substream); | |
e661d0dd TI |
2563 | case SNDRV_PCM_IOCTL_PAUSE: |
2564 | { | |
2565 | int res; | |
2566 | snd_pcm_stream_lock_irq(substream); | |
2567 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); | |
2568 | snd_pcm_stream_unlock_irq(substream); | |
2569 | return res; | |
2570 | } | |
1da177e4 LT |
2571 | } |
2572 | snd_printd("unknown ioctl = 0x%x\n", cmd); | |
2573 | return -ENOTTY; | |
2574 | } | |
2575 | ||
877211f5 | 2576 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2577 | unsigned int cmd, void __user *arg) |
2578 | { | |
2579 | snd_assert(substream != NULL, return -ENXIO); | |
2580 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); | |
2581 | switch (cmd) { | |
2582 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: | |
2583 | { | |
877211f5 TI |
2584 | struct snd_xferi xferi; |
2585 | struct snd_xferi __user *_xferi = arg; | |
2586 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2587 | snd_pcm_sframes_t result; |
2588 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2589 | return -EBADFD; | |
2590 | if (put_user(0, &_xferi->result)) | |
2591 | return -EFAULT; | |
2592 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2593 | return -EFAULT; | |
2594 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); | |
2595 | __put_user(result, &_xferi->result); | |
2596 | return result < 0 ? result : 0; | |
2597 | } | |
2598 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: | |
2599 | { | |
877211f5 TI |
2600 | struct snd_xfern xfern; |
2601 | struct snd_xfern __user *_xfern = arg; | |
2602 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2603 | void __user **bufs; |
2604 | snd_pcm_sframes_t result; | |
2605 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2606 | return -EBADFD; | |
2607 | if (runtime->channels > 128) | |
2608 | return -EINVAL; | |
2609 | if (put_user(0, &_xfern->result)) | |
2610 | return -EFAULT; | |
2611 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2612 | return -EFAULT; | |
2613 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2614 | if (bufs == NULL) | |
2615 | return -ENOMEM; | |
2616 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2617 | kfree(bufs); | |
2618 | return -EFAULT; | |
2619 | } | |
2620 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); | |
2621 | kfree(bufs); | |
2622 | __put_user(result, &_xfern->result); | |
2623 | return result < 0 ? result : 0; | |
2624 | } | |
2625 | case SNDRV_PCM_IOCTL_REWIND: | |
2626 | { | |
2627 | snd_pcm_uframes_t frames; | |
2628 | snd_pcm_uframes_t __user *_frames = arg; | |
2629 | snd_pcm_sframes_t result; | |
2630 | if (get_user(frames, _frames)) | |
2631 | return -EFAULT; | |
2632 | if (put_user(0, _frames)) | |
2633 | return -EFAULT; | |
2634 | result = snd_pcm_playback_rewind(substream, frames); | |
2635 | __put_user(result, _frames); | |
2636 | return result < 0 ? result : 0; | |
2637 | } | |
2638 | case SNDRV_PCM_IOCTL_FORWARD: | |
2639 | { | |
2640 | snd_pcm_uframes_t frames; | |
2641 | snd_pcm_uframes_t __user *_frames = arg; | |
2642 | snd_pcm_sframes_t result; | |
2643 | if (get_user(frames, _frames)) | |
2644 | return -EFAULT; | |
2645 | if (put_user(0, _frames)) | |
2646 | return -EFAULT; | |
2647 | result = snd_pcm_playback_forward(substream, frames); | |
2648 | __put_user(result, _frames); | |
2649 | return result < 0 ? result : 0; | |
2650 | } | |
1da177e4 LT |
2651 | } |
2652 | return snd_pcm_common_ioctl1(substream, cmd, arg); | |
2653 | } | |
2654 | ||
877211f5 | 2655 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
1da177e4 LT |
2656 | unsigned int cmd, void __user *arg) |
2657 | { | |
2658 | snd_assert(substream != NULL, return -ENXIO); | |
2659 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); | |
2660 | switch (cmd) { | |
2661 | case SNDRV_PCM_IOCTL_READI_FRAMES: | |
2662 | { | |
877211f5 TI |
2663 | struct snd_xferi xferi; |
2664 | struct snd_xferi __user *_xferi = arg; | |
2665 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2666 | snd_pcm_sframes_t result; |
2667 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2668 | return -EBADFD; | |
2669 | if (put_user(0, &_xferi->result)) | |
2670 | return -EFAULT; | |
2671 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) | |
2672 | return -EFAULT; | |
2673 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); | |
2674 | __put_user(result, &_xferi->result); | |
2675 | return result < 0 ? result : 0; | |
2676 | } | |
2677 | case SNDRV_PCM_IOCTL_READN_FRAMES: | |
2678 | { | |
877211f5 TI |
2679 | struct snd_xfern xfern; |
2680 | struct snd_xfern __user *_xfern = arg; | |
2681 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1da177e4 LT |
2682 | void *bufs; |
2683 | snd_pcm_sframes_t result; | |
2684 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2685 | return -EBADFD; | |
2686 | if (runtime->channels > 128) | |
2687 | return -EINVAL; | |
2688 | if (put_user(0, &_xfern->result)) | |
2689 | return -EFAULT; | |
2690 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) | |
2691 | return -EFAULT; | |
2692 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); | |
2693 | if (bufs == NULL) | |
2694 | return -ENOMEM; | |
2695 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { | |
2696 | kfree(bufs); | |
2697 | return -EFAULT; | |
2698 | } | |
2699 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); | |
2700 | kfree(bufs); | |
2701 | __put_user(result, &_xfern->result); | |
2702 | return result < 0 ? result : 0; | |
2703 | } | |
2704 | case SNDRV_PCM_IOCTL_REWIND: | |
2705 | { | |
2706 | snd_pcm_uframes_t frames; | |
2707 | snd_pcm_uframes_t __user *_frames = arg; | |
2708 | snd_pcm_sframes_t result; | |
2709 | if (get_user(frames, _frames)) | |
2710 | return -EFAULT; | |
2711 | if (put_user(0, _frames)) | |
2712 | return -EFAULT; | |
2713 | result = snd_pcm_capture_rewind(substream, frames); | |
2714 | __put_user(result, _frames); | |
2715 | return result < 0 ? result : 0; | |
2716 | } | |
2717 | case SNDRV_PCM_IOCTL_FORWARD: | |
2718 | { | |
2719 | snd_pcm_uframes_t frames; | |
2720 | snd_pcm_uframes_t __user *_frames = arg; | |
2721 | snd_pcm_sframes_t result; | |
2722 | if (get_user(frames, _frames)) | |
2723 | return -EFAULT; | |
2724 | if (put_user(0, _frames)) | |
2725 | return -EFAULT; | |
2726 | result = snd_pcm_capture_forward(substream, frames); | |
2727 | __put_user(result, _frames); | |
2728 | return result < 0 ? result : 0; | |
2729 | } | |
2730 | } | |
2731 | return snd_pcm_common_ioctl1(substream, cmd, arg); | |
2732 | } | |
2733 | ||
877211f5 TI |
2734 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
2735 | unsigned long arg) | |
1da177e4 | 2736 | { |
877211f5 | 2737 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2738 | |
2739 | pcm_file = file->private_data; | |
2740 | ||
2741 | if (((cmd >> 8) & 0xff) != 'A') | |
2742 | return -ENOTTY; | |
2743 | ||
2744 | return snd_pcm_playback_ioctl1(pcm_file->substream, cmd, (void __user *)arg); | |
2745 | } | |
2746 | ||
877211f5 TI |
2747 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
2748 | unsigned long arg) | |
1da177e4 | 2749 | { |
877211f5 | 2750 | struct snd_pcm_file *pcm_file; |
1da177e4 LT |
2751 | |
2752 | pcm_file = file->private_data; | |
2753 | ||
2754 | if (((cmd >> 8) & 0xff) != 'A') | |
2755 | return -ENOTTY; | |
2756 | ||
2757 | return snd_pcm_capture_ioctl1(pcm_file->substream, cmd, (void __user *)arg); | |
2758 | } | |
2759 | ||
bf1bbb5a TI |
2760 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
2761 | unsigned int cmd, void *arg) | |
1da177e4 LT |
2762 | { |
2763 | mm_segment_t fs; | |
2764 | int result; | |
2765 | ||
2766 | fs = snd_enter_user(); | |
1da177e4 LT |
2767 | switch (substream->stream) { |
2768 | case SNDRV_PCM_STREAM_PLAYBACK: | |
bf1bbb5a TI |
2769 | result = snd_pcm_playback_ioctl1(substream, |
2770 | cmd, (void __user *)arg); | |
2771 | break; | |
1da177e4 | 2772 | case SNDRV_PCM_STREAM_CAPTURE: |
bf1bbb5a TI |
2773 | result = snd_pcm_capture_ioctl1(substream, |
2774 | cmd, (void __user *)arg); | |
2775 | break; | |
1da177e4 | 2776 | default: |
bf1bbb5a TI |
2777 | result = -EINVAL; |
2778 | break; | |
1da177e4 | 2779 | } |
bf1bbb5a TI |
2780 | snd_leave_user(fs); |
2781 | return result; | |
1da177e4 LT |
2782 | } |
2783 | ||
e88e8ae6 TI |
2784 | EXPORT_SYMBOL(snd_pcm_kernel_ioctl); |
2785 | ||
877211f5 TI |
2786 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
2787 | loff_t * offset) | |
1da177e4 | 2788 | { |
877211f5 TI |
2789 | struct snd_pcm_file *pcm_file; |
2790 | struct snd_pcm_substream *substream; | |
2791 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2792 | snd_pcm_sframes_t result; |
2793 | ||
2794 | pcm_file = file->private_data; | |
2795 | substream = pcm_file->substream; | |
2796 | snd_assert(substream != NULL, return -ENXIO); | |
2797 | runtime = substream->runtime; | |
2798 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2799 | return -EBADFD; | |
2800 | if (!frame_aligned(runtime, count)) | |
2801 | return -EINVAL; | |
2802 | count = bytes_to_frames(runtime, count); | |
2803 | result = snd_pcm_lib_read(substream, buf, count); | |
2804 | if (result > 0) | |
2805 | result = frames_to_bytes(runtime, result); | |
2806 | return result; | |
2807 | } | |
2808 | ||
877211f5 TI |
2809 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
2810 | size_t count, loff_t * offset) | |
1da177e4 | 2811 | { |
877211f5 TI |
2812 | struct snd_pcm_file *pcm_file; |
2813 | struct snd_pcm_substream *substream; | |
2814 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2815 | snd_pcm_sframes_t result; |
2816 | ||
2817 | pcm_file = file->private_data; | |
2818 | substream = pcm_file->substream; | |
2819 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2820 | runtime = substream->runtime; | |
2821 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2822 | result = -EBADFD; | |
2823 | goto end; | |
2824 | } | |
2825 | if (!frame_aligned(runtime, count)) { | |
2826 | result = -EINVAL; | |
2827 | goto end; | |
2828 | } | |
2829 | count = bytes_to_frames(runtime, count); | |
2830 | result = snd_pcm_lib_write(substream, buf, count); | |
2831 | if (result > 0) | |
2832 | result = frames_to_bytes(runtime, result); | |
2833 | end: | |
2834 | return result; | |
2835 | } | |
2836 | ||
2837 | static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector, | |
2838 | unsigned long count, loff_t * offset) | |
2839 | ||
2840 | { | |
877211f5 TI |
2841 | struct snd_pcm_file *pcm_file; |
2842 | struct snd_pcm_substream *substream; | |
2843 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2844 | snd_pcm_sframes_t result; |
2845 | unsigned long i; | |
2846 | void __user **bufs; | |
2847 | snd_pcm_uframes_t frames; | |
2848 | ||
2849 | pcm_file = file->private_data; | |
2850 | substream = pcm_file->substream; | |
2851 | snd_assert(substream != NULL, return -ENXIO); | |
2852 | runtime = substream->runtime; | |
2853 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
2854 | return -EBADFD; | |
2855 | if (count > 1024 || count != runtime->channels) | |
2856 | return -EINVAL; | |
2857 | if (!frame_aligned(runtime, _vector->iov_len)) | |
2858 | return -EINVAL; | |
2859 | frames = bytes_to_samples(runtime, _vector->iov_len); | |
2860 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); | |
2861 | if (bufs == NULL) | |
2862 | return -ENOMEM; | |
2863 | for (i = 0; i < count; ++i) | |
2864 | bufs[i] = _vector[i].iov_base; | |
2865 | result = snd_pcm_lib_readv(substream, bufs, frames); | |
2866 | if (result > 0) | |
2867 | result = frames_to_bytes(runtime, result); | |
2868 | kfree(bufs); | |
2869 | return result; | |
2870 | } | |
2871 | ||
2872 | static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector, | |
2873 | unsigned long count, loff_t * offset) | |
2874 | { | |
877211f5 TI |
2875 | struct snd_pcm_file *pcm_file; |
2876 | struct snd_pcm_substream *substream; | |
2877 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2878 | snd_pcm_sframes_t result; |
2879 | unsigned long i; | |
2880 | void __user **bufs; | |
2881 | snd_pcm_uframes_t frames; | |
2882 | ||
2883 | pcm_file = file->private_data; | |
2884 | substream = pcm_file->substream; | |
2885 | snd_assert(substream != NULL, result = -ENXIO; goto end); | |
2886 | runtime = substream->runtime; | |
2887 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { | |
2888 | result = -EBADFD; | |
2889 | goto end; | |
2890 | } | |
2891 | if (count > 128 || count != runtime->channels || | |
2892 | !frame_aligned(runtime, _vector->iov_len)) { | |
2893 | result = -EINVAL; | |
2894 | goto end; | |
2895 | } | |
2896 | frames = bytes_to_samples(runtime, _vector->iov_len); | |
2897 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); | |
2898 | if (bufs == NULL) | |
2899 | return -ENOMEM; | |
2900 | for (i = 0; i < count; ++i) | |
2901 | bufs[i] = _vector[i].iov_base; | |
2902 | result = snd_pcm_lib_writev(substream, bufs, frames); | |
2903 | if (result > 0) | |
2904 | result = frames_to_bytes(runtime, result); | |
2905 | kfree(bufs); | |
2906 | end: | |
2907 | return result; | |
2908 | } | |
2909 | ||
2910 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) | |
2911 | { | |
877211f5 TI |
2912 | struct snd_pcm_file *pcm_file; |
2913 | struct snd_pcm_substream *substream; | |
2914 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2915 | unsigned int mask; |
2916 | snd_pcm_uframes_t avail; | |
2917 | ||
2918 | pcm_file = file->private_data; | |
2919 | ||
2920 | substream = pcm_file->substream; | |
2921 | snd_assert(substream != NULL, return -ENXIO); | |
2922 | runtime = substream->runtime; | |
2923 | ||
2924 | poll_wait(file, &runtime->sleep, wait); | |
2925 | ||
2926 | snd_pcm_stream_lock_irq(substream); | |
2927 | avail = snd_pcm_playback_avail(runtime); | |
2928 | switch (runtime->status->state) { | |
2929 | case SNDRV_PCM_STATE_RUNNING: | |
2930 | case SNDRV_PCM_STATE_PREPARED: | |
2931 | case SNDRV_PCM_STATE_PAUSED: | |
2932 | if (avail >= runtime->control->avail_min) { | |
2933 | mask = POLLOUT | POLLWRNORM; | |
2934 | break; | |
2935 | } | |
2936 | /* Fall through */ | |
2937 | case SNDRV_PCM_STATE_DRAINING: | |
2938 | mask = 0; | |
2939 | break; | |
2940 | default: | |
2941 | mask = POLLOUT | POLLWRNORM | POLLERR; | |
2942 | break; | |
2943 | } | |
2944 | snd_pcm_stream_unlock_irq(substream); | |
2945 | return mask; | |
2946 | } | |
2947 | ||
2948 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) | |
2949 | { | |
877211f5 TI |
2950 | struct snd_pcm_file *pcm_file; |
2951 | struct snd_pcm_substream *substream; | |
2952 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
2953 | unsigned int mask; |
2954 | snd_pcm_uframes_t avail; | |
2955 | ||
2956 | pcm_file = file->private_data; | |
2957 | ||
2958 | substream = pcm_file->substream; | |
2959 | snd_assert(substream != NULL, return -ENXIO); | |
2960 | runtime = substream->runtime; | |
2961 | ||
2962 | poll_wait(file, &runtime->sleep, wait); | |
2963 | ||
2964 | snd_pcm_stream_lock_irq(substream); | |
2965 | avail = snd_pcm_capture_avail(runtime); | |
2966 | switch (runtime->status->state) { | |
2967 | case SNDRV_PCM_STATE_RUNNING: | |
2968 | case SNDRV_PCM_STATE_PREPARED: | |
2969 | case SNDRV_PCM_STATE_PAUSED: | |
2970 | if (avail >= runtime->control->avail_min) { | |
2971 | mask = POLLIN | POLLRDNORM; | |
2972 | break; | |
2973 | } | |
2974 | mask = 0; | |
2975 | break; | |
2976 | case SNDRV_PCM_STATE_DRAINING: | |
2977 | if (avail > 0) { | |
2978 | mask = POLLIN | POLLRDNORM; | |
2979 | break; | |
2980 | } | |
2981 | /* Fall through */ | |
2982 | default: | |
2983 | mask = POLLIN | POLLRDNORM | POLLERR; | |
2984 | break; | |
2985 | } | |
2986 | snd_pcm_stream_unlock_irq(substream); | |
2987 | return mask; | |
2988 | } | |
2989 | ||
2990 | /* | |
2991 | * mmap support | |
2992 | */ | |
2993 | ||
2994 | /* | |
2995 | * Only on coherent architectures, we can mmap the status and the control records | |
2996 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... | |
2997 | */ | |
2998 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
2999 | /* | |
3000 | * mmap status record | |
3001 | */ | |
877211f5 TI |
3002 | static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area, |
3003 | unsigned long address, int *type) | |
1da177e4 | 3004 | { |
877211f5 TI |
3005 | struct snd_pcm_substream *substream = area->vm_private_data; |
3006 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3007 | struct page * page; |
3008 | ||
3009 | if (substream == NULL) | |
3010 | return NOPAGE_OOM; | |
3011 | runtime = substream->runtime; | |
3012 | page = virt_to_page(runtime->status); | |
b5810039 | 3013 | get_page(page); |
1da177e4 LT |
3014 | if (type) |
3015 | *type = VM_FAULT_MINOR; | |
3016 | return page; | |
3017 | } | |
3018 | ||
3019 | static struct vm_operations_struct snd_pcm_vm_ops_status = | |
3020 | { | |
3021 | .nopage = snd_pcm_mmap_status_nopage, | |
3022 | }; | |
3023 | ||
877211f5 | 3024 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3025 | struct vm_area_struct *area) |
3026 | { | |
877211f5 | 3027 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3028 | long size; |
3029 | if (!(area->vm_flags & VM_READ)) | |
3030 | return -EINVAL; | |
3031 | runtime = substream->runtime; | |
3032 | snd_assert(runtime != NULL, return -EAGAIN); | |
3033 | size = area->vm_end - area->vm_start; | |
877211f5 | 3034 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
1da177e4 LT |
3035 | return -EINVAL; |
3036 | area->vm_ops = &snd_pcm_vm_ops_status; | |
3037 | area->vm_private_data = substream; | |
3038 | area->vm_flags |= VM_RESERVED; | |
3039 | return 0; | |
3040 | } | |
3041 | ||
3042 | /* | |
3043 | * mmap control record | |
3044 | */ | |
877211f5 TI |
3045 | static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area, |
3046 | unsigned long address, int *type) | |
1da177e4 | 3047 | { |
877211f5 TI |
3048 | struct snd_pcm_substream *substream = area->vm_private_data; |
3049 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3050 | struct page * page; |
3051 | ||
3052 | if (substream == NULL) | |
3053 | return NOPAGE_OOM; | |
3054 | runtime = substream->runtime; | |
3055 | page = virt_to_page(runtime->control); | |
b5810039 | 3056 | get_page(page); |
1da177e4 LT |
3057 | if (type) |
3058 | *type = VM_FAULT_MINOR; | |
3059 | return page; | |
3060 | } | |
3061 | ||
3062 | static struct vm_operations_struct snd_pcm_vm_ops_control = | |
3063 | { | |
3064 | .nopage = snd_pcm_mmap_control_nopage, | |
3065 | }; | |
3066 | ||
877211f5 | 3067 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3068 | struct vm_area_struct *area) |
3069 | { | |
877211f5 | 3070 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3071 | long size; |
3072 | if (!(area->vm_flags & VM_READ)) | |
3073 | return -EINVAL; | |
3074 | runtime = substream->runtime; | |
3075 | snd_assert(runtime != NULL, return -EAGAIN); | |
3076 | size = area->vm_end - area->vm_start; | |
877211f5 | 3077 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
1da177e4 LT |
3078 | return -EINVAL; |
3079 | area->vm_ops = &snd_pcm_vm_ops_control; | |
3080 | area->vm_private_data = substream; | |
3081 | area->vm_flags |= VM_RESERVED; | |
3082 | return 0; | |
3083 | } | |
3084 | #else /* ! coherent mmap */ | |
3085 | /* | |
3086 | * don't support mmap for status and control records. | |
3087 | */ | |
877211f5 | 3088 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3089 | struct vm_area_struct *area) |
3090 | { | |
3091 | return -ENXIO; | |
3092 | } | |
877211f5 | 3093 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3094 | struct vm_area_struct *area) |
3095 | { | |
3096 | return -ENXIO; | |
3097 | } | |
3098 | #endif /* coherent mmap */ | |
3099 | ||
3100 | /* | |
3101 | * nopage callback for mmapping a RAM page | |
3102 | */ | |
877211f5 TI |
3103 | static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area, |
3104 | unsigned long address, int *type) | |
1da177e4 | 3105 | { |
877211f5 TI |
3106 | struct snd_pcm_substream *substream = area->vm_private_data; |
3107 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3108 | unsigned long offset; |
3109 | struct page * page; | |
3110 | void *vaddr; | |
3111 | size_t dma_bytes; | |
3112 | ||
3113 | if (substream == NULL) | |
3114 | return NOPAGE_OOM; | |
3115 | runtime = substream->runtime; | |
3116 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3117 | offset += address - area->vm_start; | |
3118 | snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM); | |
3119 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3120 | if (offset > dma_bytes - PAGE_SIZE) | |
3121 | return NOPAGE_SIGBUS; | |
3122 | if (substream->ops->page) { | |
3123 | page = substream->ops->page(substream, offset); | |
3124 | if (! page) | |
3125 | return NOPAGE_OOM; | |
3126 | } else { | |
3127 | vaddr = runtime->dma_area + offset; | |
3128 | page = virt_to_page(vaddr); | |
3129 | } | |
b5810039 | 3130 | get_page(page); |
1da177e4 LT |
3131 | if (type) |
3132 | *type = VM_FAULT_MINOR; | |
3133 | return page; | |
3134 | } | |
3135 | ||
3136 | static struct vm_operations_struct snd_pcm_vm_ops_data = | |
3137 | { | |
3138 | .open = snd_pcm_mmap_data_open, | |
3139 | .close = snd_pcm_mmap_data_close, | |
3140 | .nopage = snd_pcm_mmap_data_nopage, | |
3141 | }; | |
3142 | ||
3143 | /* | |
3144 | * mmap the DMA buffer on RAM | |
3145 | */ | |
877211f5 TI |
3146 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
3147 | struct vm_area_struct *area) | |
1da177e4 LT |
3148 | { |
3149 | area->vm_ops = &snd_pcm_vm_ops_data; | |
3150 | area->vm_private_data = substream; | |
3151 | area->vm_flags |= VM_RESERVED; | |
3152 | atomic_inc(&substream->runtime->mmap_count); | |
3153 | return 0; | |
3154 | } | |
3155 | ||
3156 | /* | |
3157 | * mmap the DMA buffer on I/O memory area | |
3158 | */ | |
3159 | #if SNDRV_PCM_INFO_MMAP_IOMEM | |
3160 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = | |
3161 | { | |
3162 | .open = snd_pcm_mmap_data_open, | |
3163 | .close = snd_pcm_mmap_data_close, | |
3164 | }; | |
3165 | ||
877211f5 TI |
3166 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
3167 | struct vm_area_struct *area) | |
1da177e4 LT |
3168 | { |
3169 | long size; | |
3170 | unsigned long offset; | |
3171 | ||
3172 | #ifdef pgprot_noncached | |
3173 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); | |
3174 | #endif | |
3175 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; | |
3176 | area->vm_private_data = substream; | |
3177 | area->vm_flags |= VM_IO; | |
3178 | size = area->vm_end - area->vm_start; | |
3179 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3180 | if (io_remap_pfn_range(area, area->vm_start, | |
3181 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, | |
3182 | size, area->vm_page_prot)) | |
3183 | return -EAGAIN; | |
3184 | atomic_inc(&substream->runtime->mmap_count); | |
3185 | return 0; | |
3186 | } | |
e88e8ae6 TI |
3187 | |
3188 | EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem); | |
1da177e4 LT |
3189 | #endif /* SNDRV_PCM_INFO_MMAP */ |
3190 | ||
3191 | /* | |
3192 | * mmap DMA buffer | |
3193 | */ | |
877211f5 | 3194 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
1da177e4 LT |
3195 | struct vm_area_struct *area) |
3196 | { | |
877211f5 | 3197 | struct snd_pcm_runtime *runtime; |
1da177e4 LT |
3198 | long size; |
3199 | unsigned long offset; | |
3200 | size_t dma_bytes; | |
3201 | ||
3202 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
3203 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) | |
3204 | return -EINVAL; | |
3205 | } else { | |
3206 | if (!(area->vm_flags & VM_READ)) | |
3207 | return -EINVAL; | |
3208 | } | |
3209 | runtime = substream->runtime; | |
3210 | snd_assert(runtime != NULL, return -EAGAIN); | |
3211 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) | |
3212 | return -EBADFD; | |
3213 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) | |
3214 | return -ENXIO; | |
3215 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || | |
3216 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) | |
3217 | return -EINVAL; | |
3218 | size = area->vm_end - area->vm_start; | |
3219 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3220 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); | |
3221 | if ((size_t)size > dma_bytes) | |
3222 | return -EINVAL; | |
3223 | if (offset > dma_bytes - size) | |
3224 | return -EINVAL; | |
3225 | ||
3226 | if (substream->ops->mmap) | |
3227 | return substream->ops->mmap(substream, area); | |
3228 | else | |
3229 | return snd_pcm_default_mmap(substream, area); | |
3230 | } | |
3231 | ||
e88e8ae6 TI |
3232 | EXPORT_SYMBOL(snd_pcm_mmap_data); |
3233 | ||
1da177e4 LT |
3234 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
3235 | { | |
877211f5 TI |
3236 | struct snd_pcm_file * pcm_file; |
3237 | struct snd_pcm_substream *substream; | |
1da177e4 LT |
3238 | unsigned long offset; |
3239 | ||
3240 | pcm_file = file->private_data; | |
3241 | substream = pcm_file->substream; | |
3242 | snd_assert(substream != NULL, return -ENXIO); | |
3243 | ||
3244 | offset = area->vm_pgoff << PAGE_SHIFT; | |
3245 | switch (offset) { | |
3246 | case SNDRV_PCM_MMAP_OFFSET_STATUS: | |
3247 | if (substream->no_mmap_ctrl) | |
3248 | return -ENXIO; | |
3249 | return snd_pcm_mmap_status(substream, file, area); | |
3250 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: | |
3251 | if (substream->no_mmap_ctrl) | |
3252 | return -ENXIO; | |
3253 | return snd_pcm_mmap_control(substream, file, area); | |
3254 | default: | |
3255 | return snd_pcm_mmap_data(substream, file, area); | |
3256 | } | |
3257 | return 0; | |
3258 | } | |
3259 | ||
3260 | static int snd_pcm_fasync(int fd, struct file * file, int on) | |
3261 | { | |
877211f5 TI |
3262 | struct snd_pcm_file * pcm_file; |
3263 | struct snd_pcm_substream *substream; | |
3264 | struct snd_pcm_runtime *runtime; | |
1da177e4 LT |
3265 | int err; |
3266 | ||
3267 | pcm_file = file->private_data; | |
3268 | substream = pcm_file->substream; | |
3269 | snd_assert(substream != NULL, return -ENXIO); | |
3270 | runtime = substream->runtime; | |
3271 | ||
3272 | err = fasync_helper(fd, file, on, &runtime->fasync); | |
3273 | if (err < 0) | |
3274 | return err; | |
3275 | return 0; | |
3276 | } | |
3277 | ||
3278 | /* | |
3279 | * ioctl32 compat | |
3280 | */ | |
3281 | #ifdef CONFIG_COMPAT | |
3282 | #include "pcm_compat.c" | |
3283 | #else | |
3284 | #define snd_pcm_ioctl_compat NULL | |
3285 | #endif | |
3286 | ||
3287 | /* | |
3288 | * To be removed helpers to keep binary compatibility | |
3289 | */ | |
3290 | ||
59d48582 | 3291 | #ifdef CONFIG_SND_SUPPORT_OLD_API |
1da177e4 LT |
3292 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
3293 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) | |
3294 | ||
877211f5 TI |
3295 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
3296 | struct snd_pcm_hw_params_old *oparams) | |
1da177e4 LT |
3297 | { |
3298 | unsigned int i; | |
3299 | ||
3300 | memset(params, 0, sizeof(*params)); | |
3301 | params->flags = oparams->flags; | |
3302 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3303 | params->masks[i].bits[0] = oparams->masks[i]; | |
3304 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); | |
3305 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); | |
3306 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); | |
3307 | params->info = oparams->info; | |
3308 | params->msbits = oparams->msbits; | |
3309 | params->rate_num = oparams->rate_num; | |
3310 | params->rate_den = oparams->rate_den; | |
3311 | params->fifo_size = oparams->fifo_size; | |
3312 | } | |
3313 | ||
877211f5 TI |
3314 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
3315 | struct snd_pcm_hw_params *params) | |
1da177e4 LT |
3316 | { |
3317 | unsigned int i; | |
3318 | ||
3319 | memset(oparams, 0, sizeof(*oparams)); | |
3320 | oparams->flags = params->flags; | |
3321 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) | |
3322 | oparams->masks[i] = params->masks[i].bits[0]; | |
3323 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); | |
3324 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); | |
3325 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); | |
3326 | oparams->info = params->info; | |
3327 | oparams->msbits = params->msbits; | |
3328 | oparams->rate_num = params->rate_num; | |
3329 | oparams->rate_den = params->rate_den; | |
3330 | oparams->fifo_size = params->fifo_size; | |
3331 | } | |
3332 | ||
877211f5 TI |
3333 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
3334 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3335 | { |
877211f5 TI |
3336 | struct snd_pcm_hw_params *params; |
3337 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3338 | int err; |
3339 | ||
3340 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3341 | if (!params) { | |
3342 | err = -ENOMEM; | |
3343 | goto out; | |
3344 | } | |
3345 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3346 | if (!oparams) { | |
3347 | err = -ENOMEM; | |
3348 | goto out; | |
3349 | } | |
3350 | ||
3351 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3352 | err = -EFAULT; | |
3353 | goto out; | |
3354 | } | |
3355 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3356 | err = snd_pcm_hw_refine(substream, params); | |
3357 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3358 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3359 | if (!err) | |
3360 | err = -EFAULT; | |
3361 | } | |
3362 | out: | |
3363 | kfree(params); | |
3364 | kfree(oparams); | |
3365 | return err; | |
3366 | } | |
3367 | ||
877211f5 TI |
3368 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
3369 | struct snd_pcm_hw_params_old __user * _oparams) | |
1da177e4 | 3370 | { |
877211f5 TI |
3371 | struct snd_pcm_hw_params *params; |
3372 | struct snd_pcm_hw_params_old *oparams = NULL; | |
1da177e4 LT |
3373 | int err; |
3374 | ||
3375 | params = kmalloc(sizeof(*params), GFP_KERNEL); | |
3376 | if (!params) { | |
3377 | err = -ENOMEM; | |
3378 | goto out; | |
3379 | } | |
3380 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); | |
3381 | if (!oparams) { | |
3382 | err = -ENOMEM; | |
3383 | goto out; | |
3384 | } | |
3385 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { | |
3386 | err = -EFAULT; | |
3387 | goto out; | |
3388 | } | |
3389 | snd_pcm_hw_convert_from_old_params(params, oparams); | |
3390 | err = snd_pcm_hw_params(substream, params); | |
3391 | snd_pcm_hw_convert_to_old_params(oparams, params); | |
3392 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { | |
3393 | if (!err) | |
3394 | err = -EFAULT; | |
3395 | } | |
3396 | out: | |
3397 | kfree(params); | |
3398 | kfree(oparams); | |
3399 | return err; | |
3400 | } | |
59d48582 | 3401 | #endif /* CONFIG_SND_SUPPORT_OLD_API */ |
1da177e4 LT |
3402 | |
3403 | /* | |
3404 | * Register section | |
3405 | */ | |
3406 | ||
2af677fc | 3407 | struct file_operations snd_pcm_f_ops[2] = { |
1da177e4 | 3408 | { |
2af677fc CL |
3409 | .owner = THIS_MODULE, |
3410 | .write = snd_pcm_write, | |
3411 | .writev = snd_pcm_writev, | |
f87135f5 | 3412 | .open = snd_pcm_playback_open, |
2af677fc CL |
3413 | .release = snd_pcm_release, |
3414 | .poll = snd_pcm_playback_poll, | |
3415 | .unlocked_ioctl = snd_pcm_playback_ioctl, | |
3416 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3417 | .mmap = snd_pcm_mmap, | |
3418 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3419 | }, |
3420 | { | |
2af677fc CL |
3421 | .owner = THIS_MODULE, |
3422 | .read = snd_pcm_read, | |
3423 | .readv = snd_pcm_readv, | |
f87135f5 | 3424 | .open = snd_pcm_capture_open, |
2af677fc CL |
3425 | .release = snd_pcm_release, |
3426 | .poll = snd_pcm_capture_poll, | |
3427 | .unlocked_ioctl = snd_pcm_capture_ioctl, | |
3428 | .compat_ioctl = snd_pcm_ioctl_compat, | |
3429 | .mmap = snd_pcm_mmap, | |
3430 | .fasync = snd_pcm_fasync, | |
1da177e4 LT |
3431 | } |
3432 | }; |