Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 42 | struct snd_pcm_hw_params_old { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | unsigned int flags; |
| 44 | unsigned int masks[SNDRV_PCM_HW_PARAM_SUBFORMAT - |
| 45 | SNDRV_PCM_HW_PARAM_ACCESS + 1]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 46 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_TICK_TIME - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 54 | snd_pcm_uframes_t fifo_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | unsigned char reserved[64]; |
| 56 | }; |
| 57 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 58 | #define SNDRV_PCM_IOCTL_HW_REFINE_OLD _IOWR('A', 0x10, struct snd_pcm_hw_params_old) |
| 59 | #define SNDRV_PCM_IOCTL_HW_PARAMS_OLD _IOWR('A', 0x11, struct snd_pcm_hw_params_old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 61 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
| 62 | struct snd_pcm_hw_params_old __user * _oparams); |
| 63 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
| 64 | struct snd_pcm_hw_params_old __user * _oparams); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | /* |
| 67 | * |
| 68 | */ |
| 69 | |
| 70 | DEFINE_RWLOCK(snd_pcm_link_rwlock); |
| 71 | static DECLARE_RWSEM(snd_pcm_link_rwsem); |
| 72 | |
| 73 | |
| 74 | static inline mm_segment_t snd_enter_user(void) |
| 75 | { |
| 76 | mm_segment_t fs = get_fs(); |
| 77 | set_fs(get_ds()); |
| 78 | return fs; |
| 79 | } |
| 80 | |
| 81 | static inline void snd_leave_user(mm_segment_t fs) |
| 82 | { |
| 83 | set_fs(fs); |
| 84 | } |
| 85 | |
| 86 | |
| 87 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 88 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 90 | struct snd_pcm_runtime *runtime; |
| 91 | struct snd_pcm *pcm = substream->pcm; |
| 92 | struct snd_pcm_str *pstr = substream->pstr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
| 94 | snd_assert(substream != NULL, return -ENXIO); |
| 95 | memset(info, 0, sizeof(*info)); |
| 96 | info->card = pcm->card->number; |
| 97 | info->device = pcm->device; |
| 98 | info->stream = substream->stream; |
| 99 | info->subdevice = substream->number; |
| 100 | strlcpy(info->id, pcm->id, sizeof(info->id)); |
| 101 | strlcpy(info->name, pcm->name, sizeof(info->name)); |
| 102 | info->dev_class = pcm->dev_class; |
| 103 | info->dev_subclass = pcm->dev_subclass; |
| 104 | info->subdevices_count = pstr->substream_count; |
| 105 | info->subdevices_avail = pstr->substream_count - pstr->substream_opened; |
| 106 | strlcpy(info->subname, substream->name, sizeof(info->subname)); |
| 107 | runtime = substream->runtime; |
| 108 | /* AB: FIXME!!! This is definitely nonsense */ |
| 109 | if (runtime) { |
| 110 | info->sync = runtime->sync; |
| 111 | substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info); |
| 112 | } |
| 113 | return 0; |
| 114 | } |
| 115 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 116 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
| 117 | struct snd_pcm_info __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 119 | struct snd_pcm_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | int err; |
| 121 | |
| 122 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 123 | if (! info) |
| 124 | return -ENOMEM; |
| 125 | err = snd_pcm_info(substream, info); |
| 126 | if (err >= 0) { |
| 127 | if (copy_to_user(_info, info, sizeof(*info))) |
| 128 | err = -EFAULT; |
| 129 | } |
| 130 | kfree(info); |
| 131 | return err; |
| 132 | } |
| 133 | |
| 134 | #undef RULES_DEBUG |
| 135 | |
| 136 | #ifdef RULES_DEBUG |
| 137 | #define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v |
| 138 | char *snd_pcm_hw_param_names[] = { |
| 139 | HW_PARAM(ACCESS), |
| 140 | HW_PARAM(FORMAT), |
| 141 | HW_PARAM(SUBFORMAT), |
| 142 | HW_PARAM(SAMPLE_BITS), |
| 143 | HW_PARAM(FRAME_BITS), |
| 144 | HW_PARAM(CHANNELS), |
| 145 | HW_PARAM(RATE), |
| 146 | HW_PARAM(PERIOD_TIME), |
| 147 | HW_PARAM(PERIOD_SIZE), |
| 148 | HW_PARAM(PERIOD_BYTES), |
| 149 | HW_PARAM(PERIODS), |
| 150 | HW_PARAM(BUFFER_TIME), |
| 151 | HW_PARAM(BUFFER_SIZE), |
| 152 | HW_PARAM(BUFFER_BYTES), |
| 153 | HW_PARAM(TICK_TIME), |
| 154 | }; |
| 155 | #endif |
| 156 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 157 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, |
| 158 | struct snd_pcm_hw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
| 160 | unsigned int k; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 161 | struct snd_pcm_hardware *hw; |
| 162 | struct snd_interval *i = NULL; |
| 163 | struct snd_mask *m = NULL; |
| 164 | struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | unsigned int rstamps[constrs->rules_num]; |
| 166 | unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1]; |
| 167 | unsigned int stamp = 2; |
| 168 | int changed, again; |
| 169 | |
| 170 | params->info = 0; |
| 171 | params->fifo_size = 0; |
| 172 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS)) |
| 173 | params->msbits = 0; |
| 174 | if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) { |
| 175 | params->rate_num = 0; |
| 176 | params->rate_den = 0; |
| 177 | } |
| 178 | |
| 179 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { |
| 180 | m = hw_param_mask(params, k); |
| 181 | if (snd_mask_empty(m)) |
| 182 | return -EINVAL; |
| 183 | if (!(params->rmask & (1 << k))) |
| 184 | continue; |
| 185 | #ifdef RULES_DEBUG |
| 186 | printk("%s = ", snd_pcm_hw_param_names[k]); |
| 187 | printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
| 188 | #endif |
| 189 | changed = snd_mask_refine(m, constrs_mask(constrs, k)); |
| 190 | #ifdef RULES_DEBUG |
| 191 | printk("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]); |
| 192 | #endif |
| 193 | if (changed) |
| 194 | params->cmask |= 1 << k; |
| 195 | if (changed < 0) |
| 196 | return changed; |
| 197 | } |
| 198 | |
| 199 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { |
| 200 | i = hw_param_interval(params, k); |
| 201 | if (snd_interval_empty(i)) |
| 202 | return -EINVAL; |
| 203 | if (!(params->rmask & (1 << k))) |
| 204 | continue; |
| 205 | #ifdef RULES_DEBUG |
| 206 | printk("%s = ", snd_pcm_hw_param_names[k]); |
| 207 | if (i->empty) |
| 208 | printk("empty"); |
| 209 | else |
| 210 | printk("%c%u %u%c", |
| 211 | i->openmin ? '(' : '[', i->min, |
| 212 | i->max, i->openmax ? ')' : ']'); |
| 213 | printk(" -> "); |
| 214 | #endif |
| 215 | changed = snd_interval_refine(i, constrs_interval(constrs, k)); |
| 216 | #ifdef RULES_DEBUG |
| 217 | if (i->empty) |
| 218 | printk("empty\n"); |
| 219 | else |
| 220 | printk("%c%u %u%c\n", |
| 221 | i->openmin ? '(' : '[', i->min, |
| 222 | i->max, i->openmax ? ')' : ']'); |
| 223 | #endif |
| 224 | if (changed) |
| 225 | params->cmask |= 1 << k; |
| 226 | if (changed < 0) |
| 227 | return changed; |
| 228 | } |
| 229 | |
| 230 | for (k = 0; k < constrs->rules_num; k++) |
| 231 | rstamps[k] = 0; |
| 232 | for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) |
| 233 | vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0; |
| 234 | do { |
| 235 | again = 0; |
| 236 | for (k = 0; k < constrs->rules_num; k++) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 237 | struct snd_pcm_hw_rule *r = &constrs->rules[k]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | unsigned int d; |
| 239 | int doit = 0; |
| 240 | if (r->cond && !(r->cond & params->flags)) |
| 241 | continue; |
| 242 | for (d = 0; r->deps[d] >= 0; d++) { |
| 243 | if (vstamps[r->deps[d]] > rstamps[k]) { |
| 244 | doit = 1; |
| 245 | break; |
| 246 | } |
| 247 | } |
| 248 | if (!doit) |
| 249 | continue; |
| 250 | #ifdef RULES_DEBUG |
| 251 | printk("Rule %d [%p]: ", k, r->func); |
| 252 | if (r->var >= 0) { |
| 253 | printk("%s = ", snd_pcm_hw_param_names[r->var]); |
| 254 | if (hw_is_mask(r->var)) { |
| 255 | m = hw_param_mask(params, r->var); |
| 256 | printk("%x", *m->bits); |
| 257 | } else { |
| 258 | i = hw_param_interval(params, r->var); |
| 259 | if (i->empty) |
| 260 | printk("empty"); |
| 261 | else |
| 262 | printk("%c%u %u%c", |
| 263 | i->openmin ? '(' : '[', i->min, |
| 264 | i->max, i->openmax ? ')' : ']'); |
| 265 | } |
| 266 | } |
| 267 | #endif |
| 268 | changed = r->func(params, r); |
| 269 | #ifdef RULES_DEBUG |
| 270 | if (r->var >= 0) { |
| 271 | printk(" -> "); |
| 272 | if (hw_is_mask(r->var)) |
| 273 | printk("%x", *m->bits); |
| 274 | else { |
| 275 | if (i->empty) |
| 276 | printk("empty"); |
| 277 | else |
| 278 | printk("%c%u %u%c", |
| 279 | i->openmin ? '(' : '[', i->min, |
| 280 | i->max, i->openmax ? ')' : ']'); |
| 281 | } |
| 282 | } |
| 283 | printk("\n"); |
| 284 | #endif |
| 285 | rstamps[k] = stamp; |
| 286 | if (changed && r->var >= 0) { |
| 287 | params->cmask |= (1 << r->var); |
| 288 | vstamps[r->var] = stamp; |
| 289 | again = 1; |
| 290 | } |
| 291 | if (changed < 0) |
| 292 | return changed; |
| 293 | stamp++; |
| 294 | } |
| 295 | } while (again); |
| 296 | if (!params->msbits) { |
| 297 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS); |
| 298 | if (snd_interval_single(i)) |
| 299 | params->msbits = snd_interval_value(i); |
| 300 | } |
| 301 | |
| 302 | if (!params->rate_den) { |
| 303 | i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); |
| 304 | if (snd_interval_single(i)) { |
| 305 | params->rate_num = snd_interval_value(i); |
| 306 | params->rate_den = 1; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | hw = &substream->runtime->hw; |
| 311 | if (!params->info) |
| 312 | params->info = hw->info; |
| 313 | if (!params->fifo_size) |
| 314 | params->fifo_size = hw->fifo_size; |
| 315 | params->rmask = 0; |
| 316 | return 0; |
| 317 | } |
| 318 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 319 | static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream, |
| 320 | struct snd_pcm_hw_params __user * _params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 322 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | int err; |
| 324 | |
| 325 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 326 | if (!params) { |
| 327 | err = -ENOMEM; |
| 328 | goto out; |
| 329 | } |
| 330 | if (copy_from_user(params, _params, sizeof(*params))) { |
| 331 | err = -EFAULT; |
| 332 | goto out; |
| 333 | } |
| 334 | err = snd_pcm_hw_refine(substream, params); |
| 335 | if (copy_to_user(_params, params, sizeof(*params))) { |
| 336 | if (!err) |
| 337 | err = -EFAULT; |
| 338 | } |
| 339 | out: |
| 340 | kfree(params); |
| 341 | return err; |
| 342 | } |
| 343 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 344 | static int snd_pcm_hw_params(struct snd_pcm_substream *substream, |
| 345 | struct snd_pcm_hw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 347 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | int err; |
| 349 | unsigned int bits; |
| 350 | snd_pcm_uframes_t frames; |
| 351 | |
| 352 | snd_assert(substream != NULL, return -ENXIO); |
| 353 | runtime = substream->runtime; |
| 354 | snd_assert(runtime != NULL, return -ENXIO); |
| 355 | snd_pcm_stream_lock_irq(substream); |
| 356 | switch (runtime->status->state) { |
| 357 | case SNDRV_PCM_STATE_OPEN: |
| 358 | case SNDRV_PCM_STATE_SETUP: |
| 359 | case SNDRV_PCM_STATE_PREPARED: |
| 360 | break; |
| 361 | default: |
| 362 | snd_pcm_stream_unlock_irq(substream); |
| 363 | return -EBADFD; |
| 364 | } |
| 365 | snd_pcm_stream_unlock_irq(substream); |
| 366 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 367 | if (!substream->oss.oss) |
| 368 | #endif |
| 369 | if (atomic_read(&runtime->mmap_count)) |
| 370 | return -EBADFD; |
| 371 | |
| 372 | params->rmask = ~0U; |
| 373 | err = snd_pcm_hw_refine(substream, params); |
| 374 | if (err < 0) |
| 375 | goto _error; |
| 376 | |
| 377 | err = snd_pcm_hw_params_choose(substream, params); |
| 378 | if (err < 0) |
| 379 | goto _error; |
| 380 | |
| 381 | if (substream->ops->hw_params != NULL) { |
| 382 | err = substream->ops->hw_params(substream, params); |
| 383 | if (err < 0) |
| 384 | goto _error; |
| 385 | } |
| 386 | |
| 387 | runtime->access = params_access(params); |
| 388 | runtime->format = params_format(params); |
| 389 | runtime->subformat = params_subformat(params); |
| 390 | runtime->channels = params_channels(params); |
| 391 | runtime->rate = params_rate(params); |
| 392 | runtime->period_size = params_period_size(params); |
| 393 | runtime->periods = params_periods(params); |
| 394 | runtime->buffer_size = params_buffer_size(params); |
| 395 | runtime->tick_time = params_tick_time(params); |
| 396 | runtime->info = params->info; |
| 397 | runtime->rate_num = params->rate_num; |
| 398 | runtime->rate_den = params->rate_den; |
| 399 | |
| 400 | bits = snd_pcm_format_physical_width(runtime->format); |
| 401 | runtime->sample_bits = bits; |
| 402 | bits *= runtime->channels; |
| 403 | runtime->frame_bits = bits; |
| 404 | frames = 1; |
| 405 | while (bits % 8 != 0) { |
| 406 | bits *= 2; |
| 407 | frames *= 2; |
| 408 | } |
| 409 | runtime->byte_align = bits / 8; |
| 410 | runtime->min_align = frames; |
| 411 | |
| 412 | /* Default sw params */ |
| 413 | runtime->tstamp_mode = SNDRV_PCM_TSTAMP_NONE; |
| 414 | runtime->period_step = 1; |
| 415 | runtime->sleep_min = 0; |
| 416 | runtime->control->avail_min = runtime->period_size; |
| 417 | runtime->xfer_align = runtime->period_size; |
| 418 | runtime->start_threshold = 1; |
| 419 | runtime->stop_threshold = runtime->buffer_size; |
| 420 | runtime->silence_threshold = 0; |
| 421 | runtime->silence_size = 0; |
| 422 | runtime->boundary = runtime->buffer_size; |
| 423 | while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size) |
| 424 | runtime->boundary *= 2; |
| 425 | |
| 426 | snd_pcm_timer_resolution_change(substream); |
| 427 | runtime->status->state = SNDRV_PCM_STATE_SETUP; |
| 428 | return 0; |
| 429 | _error: |
| 430 | /* hardware might be unuseable from this time, |
| 431 | so we force application to retry to set |
| 432 | the correct hardware parameter settings */ |
| 433 | runtime->status->state = SNDRV_PCM_STATE_OPEN; |
| 434 | if (substream->ops->hw_free != NULL) |
| 435 | substream->ops->hw_free(substream); |
| 436 | return err; |
| 437 | } |
| 438 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 439 | static int snd_pcm_hw_params_user(struct snd_pcm_substream *substream, |
| 440 | struct snd_pcm_hw_params __user * _params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 442 | struct snd_pcm_hw_params *params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | int err; |
| 444 | |
| 445 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 446 | if (!params) { |
| 447 | err = -ENOMEM; |
| 448 | goto out; |
| 449 | } |
| 450 | if (copy_from_user(params, _params, sizeof(*params))) { |
| 451 | err = -EFAULT; |
| 452 | goto out; |
| 453 | } |
| 454 | err = snd_pcm_hw_params(substream, params); |
| 455 | if (copy_to_user(_params, params, sizeof(*params))) { |
| 456 | if (!err) |
| 457 | err = -EFAULT; |
| 458 | } |
| 459 | out: |
| 460 | kfree(params); |
| 461 | return err; |
| 462 | } |
| 463 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 464 | static int snd_pcm_hw_free(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 466 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | int result = 0; |
| 468 | |
| 469 | snd_assert(substream != NULL, return -ENXIO); |
| 470 | runtime = substream->runtime; |
| 471 | snd_assert(runtime != NULL, return -ENXIO); |
| 472 | snd_pcm_stream_lock_irq(substream); |
| 473 | switch (runtime->status->state) { |
| 474 | case SNDRV_PCM_STATE_SETUP: |
| 475 | case SNDRV_PCM_STATE_PREPARED: |
| 476 | break; |
| 477 | default: |
| 478 | snd_pcm_stream_unlock_irq(substream); |
| 479 | return -EBADFD; |
| 480 | } |
| 481 | snd_pcm_stream_unlock_irq(substream); |
| 482 | if (atomic_read(&runtime->mmap_count)) |
| 483 | return -EBADFD; |
| 484 | if (substream->ops->hw_free) |
| 485 | result = substream->ops->hw_free(substream); |
| 486 | runtime->status->state = SNDRV_PCM_STATE_OPEN; |
| 487 | return result; |
| 488 | } |
| 489 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 490 | static int snd_pcm_sw_params(struct snd_pcm_substream *substream, |
| 491 | struct snd_pcm_sw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 493 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
| 495 | snd_assert(substream != NULL, return -ENXIO); |
| 496 | runtime = substream->runtime; |
| 497 | snd_assert(runtime != NULL, return -ENXIO); |
| 498 | snd_pcm_stream_lock_irq(substream); |
| 499 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 500 | snd_pcm_stream_unlock_irq(substream); |
| 501 | return -EBADFD; |
| 502 | } |
| 503 | snd_pcm_stream_unlock_irq(substream); |
| 504 | |
| 505 | if (params->tstamp_mode > SNDRV_PCM_TSTAMP_LAST) |
| 506 | return -EINVAL; |
| 507 | if (params->avail_min == 0) |
| 508 | return -EINVAL; |
| 509 | if (params->xfer_align == 0 || |
| 510 | params->xfer_align % runtime->min_align != 0) |
| 511 | return -EINVAL; |
| 512 | if (params->silence_size >= runtime->boundary) { |
| 513 | if (params->silence_threshold != 0) |
| 514 | return -EINVAL; |
| 515 | } else { |
| 516 | if (params->silence_size > params->silence_threshold) |
| 517 | return -EINVAL; |
| 518 | if (params->silence_threshold > runtime->buffer_size) |
| 519 | return -EINVAL; |
| 520 | } |
| 521 | snd_pcm_stream_lock_irq(substream); |
| 522 | runtime->tstamp_mode = params->tstamp_mode; |
| 523 | runtime->sleep_min = params->sleep_min; |
| 524 | runtime->period_step = params->period_step; |
| 525 | runtime->control->avail_min = params->avail_min; |
| 526 | runtime->start_threshold = params->start_threshold; |
| 527 | runtime->stop_threshold = params->stop_threshold; |
| 528 | runtime->silence_threshold = params->silence_threshold; |
| 529 | runtime->silence_size = params->silence_size; |
| 530 | runtime->xfer_align = params->xfer_align; |
| 531 | params->boundary = runtime->boundary; |
| 532 | if (snd_pcm_running(substream)) { |
| 533 | if (runtime->sleep_min) |
| 534 | snd_pcm_tick_prepare(substream); |
| 535 | else |
| 536 | snd_pcm_tick_set(substream, 0); |
| 537 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 538 | runtime->silence_size > 0) |
| 539 | snd_pcm_playback_silence(substream, ULONG_MAX); |
| 540 | wake_up(&runtime->sleep); |
| 541 | } |
| 542 | snd_pcm_stream_unlock_irq(substream); |
| 543 | return 0; |
| 544 | } |
| 545 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 546 | static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream, |
| 547 | struct snd_pcm_sw_params __user * _params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 549 | struct snd_pcm_sw_params params; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | int err; |
| 551 | if (copy_from_user(¶ms, _params, sizeof(params))) |
| 552 | return -EFAULT; |
| 553 | err = snd_pcm_sw_params(substream, ¶ms); |
| 554 | if (copy_to_user(_params, ¶ms, sizeof(params))) |
| 555 | return -EFAULT; |
| 556 | return err; |
| 557 | } |
| 558 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 559 | int snd_pcm_status(struct snd_pcm_substream *substream, |
| 560 | struct snd_pcm_status *status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 562 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
| 564 | snd_pcm_stream_lock_irq(substream); |
| 565 | status->state = runtime->status->state; |
| 566 | status->suspended_state = runtime->status->suspended_state; |
| 567 | if (status->state == SNDRV_PCM_STATE_OPEN) |
| 568 | goto _end; |
| 569 | status->trigger_tstamp = runtime->trigger_tstamp; |
| 570 | if (snd_pcm_running(substream)) { |
| 571 | snd_pcm_update_hw_ptr(substream); |
| 572 | if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP) |
| 573 | status->tstamp = runtime->status->tstamp; |
| 574 | else |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 575 | getnstimeofday(&status->tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | } else |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 577 | getnstimeofday(&status->tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | status->appl_ptr = runtime->control->appl_ptr; |
| 579 | status->hw_ptr = runtime->status->hw_ptr; |
| 580 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 581 | status->avail = snd_pcm_playback_avail(runtime); |
| 582 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING || |
| 583 | runtime->status->state == SNDRV_PCM_STATE_DRAINING) |
| 584 | status->delay = runtime->buffer_size - status->avail; |
| 585 | else |
| 586 | status->delay = 0; |
| 587 | } else { |
| 588 | status->avail = snd_pcm_capture_avail(runtime); |
| 589 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) |
| 590 | status->delay = status->avail; |
| 591 | else |
| 592 | status->delay = 0; |
| 593 | } |
| 594 | status->avail_max = runtime->avail_max; |
| 595 | status->overrange = runtime->overrange; |
| 596 | runtime->avail_max = 0; |
| 597 | runtime->overrange = 0; |
| 598 | _end: |
| 599 | snd_pcm_stream_unlock_irq(substream); |
| 600 | return 0; |
| 601 | } |
| 602 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 603 | static int snd_pcm_status_user(struct snd_pcm_substream *substream, |
| 604 | struct snd_pcm_status __user * _status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 606 | struct snd_pcm_status status; |
| 607 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | int res; |
| 609 | |
| 610 | snd_assert(substream != NULL, return -ENXIO); |
| 611 | runtime = substream->runtime; |
| 612 | memset(&status, 0, sizeof(status)); |
| 613 | res = snd_pcm_status(substream, &status); |
| 614 | if (res < 0) |
| 615 | return res; |
| 616 | if (copy_to_user(_status, &status, sizeof(status))) |
| 617 | return -EFAULT; |
| 618 | return 0; |
| 619 | } |
| 620 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 621 | static int snd_pcm_channel_info(struct snd_pcm_substream *substream, |
| 622 | struct snd_pcm_channel_info * info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 624 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | unsigned int channel; |
| 626 | |
| 627 | snd_assert(substream != NULL, return -ENXIO); |
| 628 | channel = info->channel; |
| 629 | runtime = substream->runtime; |
| 630 | snd_pcm_stream_lock_irq(substream); |
| 631 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 632 | snd_pcm_stream_unlock_irq(substream); |
| 633 | return -EBADFD; |
| 634 | } |
| 635 | snd_pcm_stream_unlock_irq(substream); |
| 636 | if (channel >= runtime->channels) |
| 637 | return -EINVAL; |
| 638 | memset(info, 0, sizeof(*info)); |
| 639 | info->channel = channel; |
| 640 | return substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_CHANNEL_INFO, info); |
| 641 | } |
| 642 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 643 | static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream, |
| 644 | struct snd_pcm_channel_info __user * _info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 646 | struct snd_pcm_channel_info info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | int res; |
| 648 | |
| 649 | if (copy_from_user(&info, _info, sizeof(info))) |
| 650 | return -EFAULT; |
| 651 | res = snd_pcm_channel_info(substream, &info); |
| 652 | if (res < 0) |
| 653 | return res; |
| 654 | if (copy_to_user(_info, &info, sizeof(info))) |
| 655 | return -EFAULT; |
| 656 | return 0; |
| 657 | } |
| 658 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 659 | static void snd_pcm_trigger_tstamp(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 661 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | if (runtime->trigger_master == NULL) |
| 663 | return; |
| 664 | if (runtime->trigger_master == substream) { |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 665 | getnstimeofday(&runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | } else { |
| 667 | snd_pcm_trigger_tstamp(runtime->trigger_master); |
| 668 | runtime->trigger_tstamp = runtime->trigger_master->runtime->trigger_tstamp; |
| 669 | } |
| 670 | runtime->trigger_master = NULL; |
| 671 | } |
| 672 | |
| 673 | struct action_ops { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 674 | int (*pre_action)(struct snd_pcm_substream *substream, int state); |
| 675 | int (*do_action)(struct snd_pcm_substream *substream, int state); |
| 676 | void (*undo_action)(struct snd_pcm_substream *substream, int state); |
| 677 | void (*post_action)(struct snd_pcm_substream *substream, int state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | }; |
| 679 | |
| 680 | /* |
| 681 | * this functions is core for handling of linked stream |
| 682 | * Note: the stream state might be changed also on failure |
| 683 | * Note2: call with calling stream lock + link lock |
| 684 | */ |
| 685 | static int snd_pcm_action_group(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 686 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | int state, int do_lock) |
| 688 | { |
| 689 | struct list_head *pos; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 690 | struct snd_pcm_substream *s = NULL; |
| 691 | struct snd_pcm_substream *s1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | int res = 0; |
| 693 | |
| 694 | snd_pcm_group_for_each(pos, substream) { |
| 695 | s = snd_pcm_group_substream_entry(pos); |
| 696 | if (do_lock && s != substream) |
| 697 | spin_lock(&s->self_group.lock); |
| 698 | res = ops->pre_action(s, state); |
| 699 | if (res < 0) |
| 700 | goto _unlock; |
| 701 | } |
| 702 | snd_pcm_group_for_each(pos, substream) { |
| 703 | s = snd_pcm_group_substream_entry(pos); |
| 704 | res = ops->do_action(s, state); |
| 705 | if (res < 0) { |
| 706 | if (ops->undo_action) { |
| 707 | snd_pcm_group_for_each(pos, substream) { |
| 708 | s1 = snd_pcm_group_substream_entry(pos); |
| 709 | if (s1 == s) /* failed stream */ |
| 710 | break; |
| 711 | ops->undo_action(s1, state); |
| 712 | } |
| 713 | } |
| 714 | s = NULL; /* unlock all */ |
| 715 | goto _unlock; |
| 716 | } |
| 717 | } |
| 718 | snd_pcm_group_for_each(pos, substream) { |
| 719 | s = snd_pcm_group_substream_entry(pos); |
| 720 | ops->post_action(s, state); |
| 721 | } |
| 722 | _unlock: |
| 723 | if (do_lock) { |
| 724 | /* unlock streams */ |
| 725 | snd_pcm_group_for_each(pos, substream) { |
| 726 | s1 = snd_pcm_group_substream_entry(pos); |
| 727 | if (s1 != substream) |
| 728 | spin_unlock(&s1->self_group.lock); |
| 729 | if (s1 == s) /* end */ |
| 730 | break; |
| 731 | } |
| 732 | } |
| 733 | return res; |
| 734 | } |
| 735 | |
| 736 | /* |
| 737 | * Note: call with stream lock |
| 738 | */ |
| 739 | static int snd_pcm_action_single(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 740 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | int state) |
| 742 | { |
| 743 | int res; |
| 744 | |
| 745 | res = ops->pre_action(substream, state); |
| 746 | if (res < 0) |
| 747 | return res; |
| 748 | res = ops->do_action(substream, state); |
| 749 | if (res == 0) |
| 750 | ops->post_action(substream, state); |
| 751 | else if (ops->undo_action) |
| 752 | ops->undo_action(substream, state); |
| 753 | return res; |
| 754 | } |
| 755 | |
| 756 | /* |
| 757 | * Note: call with stream lock |
| 758 | */ |
| 759 | static int snd_pcm_action(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 760 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | int state) |
| 762 | { |
| 763 | int res; |
| 764 | |
| 765 | if (snd_pcm_stream_linked(substream)) { |
| 766 | if (!spin_trylock(&substream->group->lock)) { |
| 767 | spin_unlock(&substream->self_group.lock); |
| 768 | spin_lock(&substream->group->lock); |
| 769 | spin_lock(&substream->self_group.lock); |
| 770 | } |
| 771 | res = snd_pcm_action_group(ops, substream, state, 1); |
| 772 | spin_unlock(&substream->group->lock); |
| 773 | } else { |
| 774 | res = snd_pcm_action_single(ops, substream, state); |
| 775 | } |
| 776 | return res; |
| 777 | } |
| 778 | |
| 779 | /* |
| 780 | * Note: don't use any locks before |
| 781 | */ |
| 782 | static int snd_pcm_action_lock_irq(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 783 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | int state) |
| 785 | { |
| 786 | int res; |
| 787 | |
| 788 | read_lock_irq(&snd_pcm_link_rwlock); |
| 789 | if (snd_pcm_stream_linked(substream)) { |
| 790 | spin_lock(&substream->group->lock); |
| 791 | spin_lock(&substream->self_group.lock); |
| 792 | res = snd_pcm_action_group(ops, substream, state, 1); |
| 793 | spin_unlock(&substream->self_group.lock); |
| 794 | spin_unlock(&substream->group->lock); |
| 795 | } else { |
| 796 | spin_lock(&substream->self_group.lock); |
| 797 | res = snd_pcm_action_single(ops, substream, state); |
| 798 | spin_unlock(&substream->self_group.lock); |
| 799 | } |
| 800 | read_unlock_irq(&snd_pcm_link_rwlock); |
| 801 | return res; |
| 802 | } |
| 803 | |
| 804 | /* |
| 805 | */ |
| 806 | static int snd_pcm_action_nonatomic(struct action_ops *ops, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 807 | struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | int state) |
| 809 | { |
| 810 | int res; |
| 811 | |
| 812 | down_read(&snd_pcm_link_rwsem); |
| 813 | if (snd_pcm_stream_linked(substream)) |
| 814 | res = snd_pcm_action_group(ops, substream, state, 0); |
| 815 | else |
| 816 | res = snd_pcm_action_single(ops, substream, state); |
| 817 | up_read(&snd_pcm_link_rwsem); |
| 818 | return res; |
| 819 | } |
| 820 | |
| 821 | /* |
| 822 | * start callbacks |
| 823 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 824 | static int snd_pcm_pre_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 826 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | if (runtime->status->state != SNDRV_PCM_STATE_PREPARED) |
| 828 | return -EBADFD; |
| 829 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 830 | !snd_pcm_playback_data(substream)) |
| 831 | return -EPIPE; |
| 832 | runtime->trigger_master = substream; |
| 833 | return 0; |
| 834 | } |
| 835 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 836 | static int snd_pcm_do_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | { |
| 838 | if (substream->runtime->trigger_master != substream) |
| 839 | return 0; |
| 840 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_START); |
| 841 | } |
| 842 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 843 | static void snd_pcm_undo_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | { |
| 845 | if (substream->runtime->trigger_master == substream) |
| 846 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
| 847 | } |
| 848 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 849 | static void snd_pcm_post_start(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 851 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | snd_pcm_trigger_tstamp(substream); |
| 853 | runtime->status->state = state; |
| 854 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 855 | runtime->silence_size > 0) |
| 856 | snd_pcm_playback_silence(substream, ULONG_MAX); |
| 857 | if (runtime->sleep_min) |
| 858 | snd_pcm_tick_prepare(substream); |
| 859 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 860 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTART, |
| 861 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | } |
| 863 | |
| 864 | static struct action_ops snd_pcm_action_start = { |
| 865 | .pre_action = snd_pcm_pre_start, |
| 866 | .do_action = snd_pcm_do_start, |
| 867 | .undo_action = snd_pcm_undo_start, |
| 868 | .post_action = snd_pcm_post_start |
| 869 | }; |
| 870 | |
| 871 | /** |
| 872 | * snd_pcm_start |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 873 | * @substream: the PCM substream instance |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | * |
| 875 | * Start all linked streams. |
| 876 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 877 | int snd_pcm_start(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 879 | return snd_pcm_action(&snd_pcm_action_start, substream, |
| 880 | SNDRV_PCM_STATE_RUNNING); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | } |
| 882 | |
| 883 | /* |
| 884 | * stop callbacks |
| 885 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 886 | static int snd_pcm_pre_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 888 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 890 | return -EBADFD; |
| 891 | runtime->trigger_master = substream; |
| 892 | return 0; |
| 893 | } |
| 894 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 895 | static int snd_pcm_do_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | { |
| 897 | if (substream->runtime->trigger_master == substream && |
| 898 | snd_pcm_running(substream)) |
| 899 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_STOP); |
| 900 | return 0; /* unconditonally stop all substreams */ |
| 901 | } |
| 902 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 903 | static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 905 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | if (runtime->status->state != state) { |
| 907 | snd_pcm_trigger_tstamp(substream); |
| 908 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 909 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSTOP, |
| 910 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | runtime->status->state = state; |
| 912 | snd_pcm_tick_set(substream, 0); |
| 913 | } |
| 914 | wake_up(&runtime->sleep); |
| 915 | } |
| 916 | |
| 917 | static struct action_ops snd_pcm_action_stop = { |
| 918 | .pre_action = snd_pcm_pre_stop, |
| 919 | .do_action = snd_pcm_do_stop, |
| 920 | .post_action = snd_pcm_post_stop |
| 921 | }; |
| 922 | |
| 923 | /** |
| 924 | * snd_pcm_stop |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 925 | * @substream: the PCM substream instance |
| 926 | * @state: PCM state after stopping the stream |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | * |
| 928 | * Try to stop all running streams in the substream group. |
| 929 | * The state of each stream is changed to the given value after that unconditionally. |
| 930 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 931 | int snd_pcm_stop(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | { |
| 933 | return snd_pcm_action(&snd_pcm_action_stop, substream, state); |
| 934 | } |
| 935 | |
| 936 | /** |
| 937 | * snd_pcm_drain_done |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 938 | * @substream: the PCM substream |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | * |
| 940 | * Stop the DMA only when the given stream is playback. |
| 941 | * The state is changed to SETUP. |
| 942 | * Unlike snd_pcm_stop(), this affects only the given stream. |
| 943 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 944 | int snd_pcm_drain_done(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 946 | return snd_pcm_action_single(&snd_pcm_action_stop, substream, |
| 947 | SNDRV_PCM_STATE_SETUP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | } |
| 949 | |
| 950 | /* |
| 951 | * pause callbacks |
| 952 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 953 | static int snd_pcm_pre_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 955 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | if (!(runtime->info & SNDRV_PCM_INFO_PAUSE)) |
| 957 | return -ENOSYS; |
| 958 | if (push) { |
| 959 | if (runtime->status->state != SNDRV_PCM_STATE_RUNNING) |
| 960 | return -EBADFD; |
| 961 | } else if (runtime->status->state != SNDRV_PCM_STATE_PAUSED) |
| 962 | return -EBADFD; |
| 963 | runtime->trigger_master = substream; |
| 964 | return 0; |
| 965 | } |
| 966 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 967 | static int snd_pcm_do_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | { |
| 969 | if (substream->runtime->trigger_master != substream) |
| 970 | return 0; |
| 971 | return substream->ops->trigger(substream, |
| 972 | push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH : |
| 973 | SNDRV_PCM_TRIGGER_PAUSE_RELEASE); |
| 974 | } |
| 975 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 976 | static void snd_pcm_undo_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | { |
| 978 | if (substream->runtime->trigger_master == substream) |
| 979 | substream->ops->trigger(substream, |
| 980 | push ? SNDRV_PCM_TRIGGER_PAUSE_RELEASE : |
| 981 | SNDRV_PCM_TRIGGER_PAUSE_PUSH); |
| 982 | } |
| 983 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 984 | static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 986 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | snd_pcm_trigger_tstamp(substream); |
| 988 | if (push) { |
| 989 | runtime->status->state = SNDRV_PCM_STATE_PAUSED; |
| 990 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 991 | snd_timer_notify(substream->timer, |
| 992 | SNDRV_TIMER_EVENT_MPAUSE, |
| 993 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | snd_pcm_tick_set(substream, 0); |
| 995 | wake_up(&runtime->sleep); |
| 996 | } else { |
| 997 | runtime->status->state = SNDRV_PCM_STATE_RUNNING; |
| 998 | if (runtime->sleep_min) |
| 999 | snd_pcm_tick_prepare(substream); |
| 1000 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1001 | snd_timer_notify(substream->timer, |
| 1002 | SNDRV_TIMER_EVENT_MCONTINUE, |
| 1003 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | static struct action_ops snd_pcm_action_pause = { |
| 1008 | .pre_action = snd_pcm_pre_pause, |
| 1009 | .do_action = snd_pcm_do_pause, |
| 1010 | .undo_action = snd_pcm_undo_pause, |
| 1011 | .post_action = snd_pcm_post_pause |
| 1012 | }; |
| 1013 | |
| 1014 | /* |
| 1015 | * Push/release the pause for all linked streams. |
| 1016 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1017 | static int snd_pcm_pause(struct snd_pcm_substream *substream, int push) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | { |
| 1019 | return snd_pcm_action(&snd_pcm_action_pause, substream, push); |
| 1020 | } |
| 1021 | |
| 1022 | #ifdef CONFIG_PM |
| 1023 | /* suspend */ |
| 1024 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1025 | static int snd_pcm_pre_suspend(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1027 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
| 1029 | return -EBUSY; |
| 1030 | runtime->trigger_master = substream; |
| 1031 | return 0; |
| 1032 | } |
| 1033 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1034 | static int snd_pcm_do_suspend(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1036 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | if (runtime->trigger_master != substream) |
| 1038 | return 0; |
| 1039 | if (! snd_pcm_running(substream)) |
| 1040 | return 0; |
| 1041 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); |
| 1042 | return 0; /* suspend unconditionally */ |
| 1043 | } |
| 1044 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1045 | static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1047 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | snd_pcm_trigger_tstamp(substream); |
| 1049 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1050 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MSUSPEND, |
| 1051 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | runtime->status->suspended_state = runtime->status->state; |
| 1053 | runtime->status->state = SNDRV_PCM_STATE_SUSPENDED; |
| 1054 | snd_pcm_tick_set(substream, 0); |
| 1055 | wake_up(&runtime->sleep); |
| 1056 | } |
| 1057 | |
| 1058 | static struct action_ops snd_pcm_action_suspend = { |
| 1059 | .pre_action = snd_pcm_pre_suspend, |
| 1060 | .do_action = snd_pcm_do_suspend, |
| 1061 | .post_action = snd_pcm_post_suspend |
| 1062 | }; |
| 1063 | |
| 1064 | /** |
| 1065 | * snd_pcm_suspend |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 1066 | * @substream: the PCM substream |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | * |
| 1068 | * Trigger SUSPEND to all linked streams. |
| 1069 | * After this call, all streams are changed to SUSPENDED state. |
| 1070 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1071 | int snd_pcm_suspend(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | { |
| 1073 | int err; |
| 1074 | unsigned long flags; |
| 1075 | |
| 1076 | snd_pcm_stream_lock_irqsave(substream, flags); |
| 1077 | err = snd_pcm_action(&snd_pcm_action_suspend, substream, 0); |
| 1078 | snd_pcm_stream_unlock_irqrestore(substream, flags); |
| 1079 | return err; |
| 1080 | } |
| 1081 | |
| 1082 | /** |
| 1083 | * snd_pcm_suspend_all |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 1084 | * @pcm: the PCM instance |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | * |
| 1086 | * Trigger SUSPEND to all substreams in the given pcm. |
| 1087 | * After this call, all streams are changed to SUSPENDED state. |
| 1088 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1089 | int snd_pcm_suspend_all(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1091 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | int stream, err = 0; |
| 1093 | |
| 1094 | for (stream = 0; stream < 2; stream++) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1095 | for (substream = pcm->streams[stream].substream; |
| 1096 | substream; substream = substream->next) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | /* FIXME: the open/close code should lock this as well */ |
| 1098 | if (substream->runtime == NULL) |
| 1099 | continue; |
| 1100 | err = snd_pcm_suspend(substream); |
| 1101 | if (err < 0 && err != -EBUSY) |
| 1102 | return err; |
| 1103 | } |
| 1104 | } |
| 1105 | return 0; |
| 1106 | } |
| 1107 | |
| 1108 | /* resume */ |
| 1109 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1110 | static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1112 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | if (!(runtime->info & SNDRV_PCM_INFO_RESUME)) |
| 1114 | return -ENOSYS; |
| 1115 | runtime->trigger_master = substream; |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1119 | static int snd_pcm_do_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1121 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | if (runtime->trigger_master != substream) |
| 1123 | return 0; |
| 1124 | /* DMA not running previously? */ |
| 1125 | if (runtime->status->suspended_state != SNDRV_PCM_STATE_RUNNING && |
| 1126 | (runtime->status->suspended_state != SNDRV_PCM_STATE_DRAINING || |
| 1127 | substream->stream != SNDRV_PCM_STREAM_PLAYBACK)) |
| 1128 | return 0; |
| 1129 | return substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_RESUME); |
| 1130 | } |
| 1131 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1132 | static void snd_pcm_undo_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | { |
| 1134 | if (substream->runtime->trigger_master == substream && |
| 1135 | snd_pcm_running(substream)) |
| 1136 | substream->ops->trigger(substream, SNDRV_PCM_TRIGGER_SUSPEND); |
| 1137 | } |
| 1138 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1139 | static void snd_pcm_post_resume(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1141 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | snd_pcm_trigger_tstamp(substream); |
| 1143 | if (substream->timer) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1144 | snd_timer_notify(substream->timer, SNDRV_TIMER_EVENT_MRESUME, |
| 1145 | &runtime->trigger_tstamp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | runtime->status->state = runtime->status->suspended_state; |
| 1147 | if (runtime->sleep_min) |
| 1148 | snd_pcm_tick_prepare(substream); |
| 1149 | } |
| 1150 | |
| 1151 | static struct action_ops snd_pcm_action_resume = { |
| 1152 | .pre_action = snd_pcm_pre_resume, |
| 1153 | .do_action = snd_pcm_do_resume, |
| 1154 | .undo_action = snd_pcm_undo_resume, |
| 1155 | .post_action = snd_pcm_post_resume |
| 1156 | }; |
| 1157 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1158 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1160 | struct snd_card *card = substream->pcm->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | int res; |
| 1162 | |
| 1163 | snd_power_lock(card); |
| 1164 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile)) >= 0) |
| 1165 | res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0); |
| 1166 | snd_power_unlock(card); |
| 1167 | return res; |
| 1168 | } |
| 1169 | |
| 1170 | #else |
| 1171 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1172 | static int snd_pcm_resume(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | { |
| 1174 | return -ENOSYS; |
| 1175 | } |
| 1176 | |
| 1177 | #endif /* CONFIG_PM */ |
| 1178 | |
| 1179 | /* |
| 1180 | * xrun ioctl |
| 1181 | * |
| 1182 | * Change the RUNNING stream(s) to XRUN state. |
| 1183 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1184 | static int snd_pcm_xrun(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1186 | struct snd_card *card = substream->pcm->card; |
| 1187 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | int result; |
| 1189 | |
| 1190 | snd_power_lock(card); |
| 1191 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1192 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); |
| 1193 | if (result < 0) |
| 1194 | goto _unlock; |
| 1195 | } |
| 1196 | |
| 1197 | snd_pcm_stream_lock_irq(substream); |
| 1198 | switch (runtime->status->state) { |
| 1199 | case SNDRV_PCM_STATE_XRUN: |
| 1200 | result = 0; /* already there */ |
| 1201 | break; |
| 1202 | case SNDRV_PCM_STATE_RUNNING: |
| 1203 | result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); |
| 1204 | break; |
| 1205 | default: |
| 1206 | result = -EBADFD; |
| 1207 | } |
| 1208 | snd_pcm_stream_unlock_irq(substream); |
| 1209 | _unlock: |
| 1210 | snd_power_unlock(card); |
| 1211 | return result; |
| 1212 | } |
| 1213 | |
| 1214 | /* |
| 1215 | * reset ioctl |
| 1216 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1217 | static int snd_pcm_pre_reset(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1219 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | switch (runtime->status->state) { |
| 1221 | case SNDRV_PCM_STATE_RUNNING: |
| 1222 | case SNDRV_PCM_STATE_PREPARED: |
| 1223 | case SNDRV_PCM_STATE_PAUSED: |
| 1224 | case SNDRV_PCM_STATE_SUSPENDED: |
| 1225 | return 0; |
| 1226 | default: |
| 1227 | return -EBADFD; |
| 1228 | } |
| 1229 | } |
| 1230 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1231 | static int snd_pcm_do_reset(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1233 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL); |
| 1235 | if (err < 0) |
| 1236 | return err; |
| 1237 | // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, ); |
| 1238 | runtime->hw_ptr_base = 0; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1239 | runtime->hw_ptr_interrupt = runtime->status->hw_ptr - |
| 1240 | runtime->status->hw_ptr % runtime->period_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | runtime->silence_start = runtime->status->hw_ptr; |
| 1242 | runtime->silence_filled = 0; |
| 1243 | return 0; |
| 1244 | } |
| 1245 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1246 | static void snd_pcm_post_reset(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1248 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
| 1250 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| 1251 | runtime->silence_size > 0) |
| 1252 | snd_pcm_playback_silence(substream, ULONG_MAX); |
| 1253 | } |
| 1254 | |
| 1255 | static struct action_ops snd_pcm_action_reset = { |
| 1256 | .pre_action = snd_pcm_pre_reset, |
| 1257 | .do_action = snd_pcm_do_reset, |
| 1258 | .post_action = snd_pcm_post_reset |
| 1259 | }; |
| 1260 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1261 | static int snd_pcm_reset(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | { |
| 1263 | return snd_pcm_action_nonatomic(&snd_pcm_action_reset, substream, 0); |
| 1264 | } |
| 1265 | |
| 1266 | /* |
| 1267 | * prepare ioctl |
| 1268 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1269 | static int snd_pcm_pre_prepare(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1271 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 1273 | return -EBADFD; |
| 1274 | if (snd_pcm_running(substream)) |
| 1275 | return -EBUSY; |
| 1276 | return 0; |
| 1277 | } |
| 1278 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1279 | static int snd_pcm_do_prepare(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | { |
| 1281 | int err; |
| 1282 | err = substream->ops->prepare(substream); |
| 1283 | if (err < 0) |
| 1284 | return err; |
| 1285 | return snd_pcm_do_reset(substream, 0); |
| 1286 | } |
| 1287 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1288 | static void snd_pcm_post_prepare(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1290 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | runtime->control->appl_ptr = runtime->status->hw_ptr; |
| 1292 | runtime->status->state = SNDRV_PCM_STATE_PREPARED; |
| 1293 | } |
| 1294 | |
| 1295 | static struct action_ops snd_pcm_action_prepare = { |
| 1296 | .pre_action = snd_pcm_pre_prepare, |
| 1297 | .do_action = snd_pcm_do_prepare, |
| 1298 | .post_action = snd_pcm_post_prepare |
| 1299 | }; |
| 1300 | |
| 1301 | /** |
| 1302 | * snd_pcm_prepare |
Takashi Iwai | df8db93 | 2005-09-07 13:38:19 +0200 | [diff] [blame] | 1303 | * @substream: the PCM substream instance |
| 1304 | * |
| 1305 | * Prepare the PCM substream to be triggerable. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1307 | int snd_pcm_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | { |
| 1309 | int res; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1310 | struct snd_card *card = substream->pcm->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | |
| 1312 | snd_power_lock(card); |
| 1313 | if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile)) >= 0) |
| 1314 | res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare, substream, 0); |
| 1315 | snd_power_unlock(card); |
| 1316 | return res; |
| 1317 | } |
| 1318 | |
| 1319 | /* |
| 1320 | * drain ioctl |
| 1321 | */ |
| 1322 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1323 | static int snd_pcm_pre_drain_init(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | { |
| 1325 | if (substream->ffile->f_flags & O_NONBLOCK) |
| 1326 | return -EAGAIN; |
| 1327 | substream->runtime->trigger_master = substream; |
| 1328 | return 0; |
| 1329 | } |
| 1330 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1331 | static int snd_pcm_do_drain_init(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1333 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1335 | switch (runtime->status->state) { |
| 1336 | case SNDRV_PCM_STATE_PREPARED: |
| 1337 | /* start playback stream if possible */ |
| 1338 | if (! snd_pcm_playback_empty(substream)) { |
| 1339 | snd_pcm_do_start(substream, SNDRV_PCM_STATE_DRAINING); |
| 1340 | snd_pcm_post_start(substream, SNDRV_PCM_STATE_DRAINING); |
| 1341 | } |
| 1342 | break; |
| 1343 | case SNDRV_PCM_STATE_RUNNING: |
| 1344 | runtime->status->state = SNDRV_PCM_STATE_DRAINING; |
| 1345 | break; |
| 1346 | default: |
| 1347 | break; |
| 1348 | } |
| 1349 | } else { |
| 1350 | /* stop running stream */ |
| 1351 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING) { |
| 1352 | int state = snd_pcm_capture_avail(runtime) > 0 ? |
| 1353 | SNDRV_PCM_STATE_DRAINING : SNDRV_PCM_STATE_SETUP; |
| 1354 | snd_pcm_do_stop(substream, state); |
| 1355 | snd_pcm_post_stop(substream, state); |
| 1356 | } |
| 1357 | } |
| 1358 | return 0; |
| 1359 | } |
| 1360 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1361 | static void snd_pcm_post_drain_init(struct snd_pcm_substream *substream, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | { |
| 1363 | } |
| 1364 | |
| 1365 | static struct action_ops snd_pcm_action_drain_init = { |
| 1366 | .pre_action = snd_pcm_pre_drain_init, |
| 1367 | .do_action = snd_pcm_do_drain_init, |
| 1368 | .post_action = snd_pcm_post_drain_init |
| 1369 | }; |
| 1370 | |
| 1371 | struct drain_rec { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1372 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | wait_queue_t wait; |
| 1374 | snd_pcm_uframes_t stop_threshold; |
| 1375 | }; |
| 1376 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1377 | static int snd_pcm_drop(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | |
| 1379 | /* |
| 1380 | * Drain the stream(s). |
| 1381 | * When the substream is linked, sync until the draining of all playback streams |
| 1382 | * is finished. |
| 1383 | * After this call, all streams are supposed to be either SETUP or DRAINING |
| 1384 | * (capture only) state. |
| 1385 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1386 | static int snd_pcm_drain(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1388 | struct snd_card *card; |
| 1389 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | struct list_head *pos; |
| 1391 | int result = 0; |
| 1392 | int i, num_drecs; |
| 1393 | struct drain_rec *drec, drec_tmp, *d; |
| 1394 | |
| 1395 | snd_assert(substream != NULL, return -ENXIO); |
| 1396 | card = substream->pcm->card; |
| 1397 | runtime = substream->runtime; |
| 1398 | |
| 1399 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 1400 | return -EBADFD; |
| 1401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | snd_power_lock(card); |
| 1403 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1404 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1405 | if (result < 0) { |
| 1406 | snd_power_unlock(card); |
| 1407 | return result; |
| 1408 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | } |
| 1410 | |
| 1411 | /* allocate temporary record for drain sync */ |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1412 | down_read(&snd_pcm_link_rwsem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | if (snd_pcm_stream_linked(substream)) { |
| 1414 | drec = kmalloc(substream->group->count * sizeof(*drec), GFP_KERNEL); |
| 1415 | if (! drec) { |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1416 | up_read(&snd_pcm_link_rwsem); |
| 1417 | snd_power_unlock(card); |
| 1418 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | } |
| 1420 | } else |
| 1421 | drec = &drec_tmp; |
| 1422 | |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1423 | /* count only playback streams */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | num_drecs = 0; |
| 1425 | snd_pcm_group_for_each(pos, substream) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1426 | struct snd_pcm_substream *s = snd_pcm_group_substream_entry(pos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | runtime = s->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 1429 | d = &drec[num_drecs++]; |
| 1430 | d->substream = s; |
| 1431 | init_waitqueue_entry(&d->wait, current); |
| 1432 | add_wait_queue(&runtime->sleep, &d->wait); |
| 1433 | /* stop_threshold fixup to avoid endless loop when |
| 1434 | * stop_threshold > buffer_size |
| 1435 | */ |
| 1436 | d->stop_threshold = runtime->stop_threshold; |
| 1437 | if (runtime->stop_threshold > runtime->buffer_size) |
| 1438 | runtime->stop_threshold = runtime->buffer_size; |
| 1439 | } |
| 1440 | } |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1441 | up_read(&snd_pcm_link_rwsem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | if (! num_drecs) |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1443 | goto _error; |
| 1444 | |
| 1445 | snd_pcm_stream_lock_irq(substream); |
| 1446 | /* resume pause */ |
| 1447 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
| 1448 | snd_pcm_pause(substream, 0); |
| 1449 | |
| 1450 | /* pre-start/stop - all running streams are changed to DRAINING state */ |
| 1451 | result = snd_pcm_action(&snd_pcm_action_drain_init, substream, 0); |
| 1452 | if (result < 0) { |
| 1453 | snd_pcm_stream_unlock_irq(substream); |
| 1454 | goto _error; |
| 1455 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | |
| 1457 | for (;;) { |
| 1458 | long tout; |
| 1459 | if (signal_pending(current)) { |
| 1460 | result = -ERESTARTSYS; |
| 1461 | break; |
| 1462 | } |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1463 | /* all finished? */ |
| 1464 | for (i = 0; i < num_drecs; i++) { |
| 1465 | runtime = drec[i].substream->runtime; |
| 1466 | if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) |
| 1467 | break; |
| 1468 | } |
| 1469 | if (i == num_drecs) |
| 1470 | break; /* yes, all drained */ |
| 1471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | set_current_state(TASK_INTERRUPTIBLE); |
| 1473 | snd_pcm_stream_unlock_irq(substream); |
| 1474 | snd_power_unlock(card); |
| 1475 | tout = schedule_timeout(10 * HZ); |
| 1476 | snd_power_lock(card); |
| 1477 | snd_pcm_stream_lock_irq(substream); |
| 1478 | if (tout == 0) { |
| 1479 | if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) |
| 1480 | result = -ESTRPIPE; |
| 1481 | else { |
| 1482 | snd_printd("playback drain error (DMA or IRQ trouble?)\n"); |
| 1483 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); |
| 1484 | result = -EIO; |
| 1485 | } |
| 1486 | break; |
| 1487 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | } |
Takashi Iwai | 21cb2a2 | 2005-05-31 14:35:31 +0200 | [diff] [blame] | 1489 | |
| 1490 | snd_pcm_stream_unlock_irq(substream); |
| 1491 | |
| 1492 | _error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | for (i = 0; i < num_drecs; i++) { |
| 1494 | d = &drec[i]; |
| 1495 | runtime = d->substream->runtime; |
| 1496 | remove_wait_queue(&runtime->sleep, &d->wait); |
| 1497 | runtime->stop_threshold = d->stop_threshold; |
| 1498 | } |
| 1499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | if (drec != &drec_tmp) |
| 1501 | kfree(drec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | snd_power_unlock(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | |
| 1504 | return result; |
| 1505 | } |
| 1506 | |
| 1507 | /* |
| 1508 | * drop ioctl |
| 1509 | * |
| 1510 | * Immediately put all linked substreams into SETUP state. |
| 1511 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1512 | static int snd_pcm_drop(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1514 | struct snd_pcm_runtime *runtime; |
| 1515 | struct snd_card *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1516 | int result = 0; |
| 1517 | |
| 1518 | snd_assert(substream != NULL, return -ENXIO); |
| 1519 | runtime = substream->runtime; |
| 1520 | card = substream->pcm->card; |
| 1521 | |
| 1522 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 1523 | return -EBADFD; |
| 1524 | |
| 1525 | snd_power_lock(card); |
| 1526 | if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) { |
| 1527 | result = snd_power_wait(card, SNDRV_CTL_POWER_D0, substream->ffile); |
| 1528 | if (result < 0) |
| 1529 | goto _unlock; |
| 1530 | } |
| 1531 | |
| 1532 | snd_pcm_stream_lock_irq(substream); |
| 1533 | /* resume pause */ |
| 1534 | if (runtime->status->state == SNDRV_PCM_STATE_PAUSED) |
| 1535 | snd_pcm_pause(substream, 0); |
| 1536 | |
| 1537 | snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP); |
| 1538 | /* runtime->control->appl_ptr = runtime->status->hw_ptr; */ |
| 1539 | snd_pcm_stream_unlock_irq(substream); |
| 1540 | _unlock: |
| 1541 | snd_power_unlock(card); |
| 1542 | return result; |
| 1543 | } |
| 1544 | |
| 1545 | |
| 1546 | /* WARNING: Don't forget to fput back the file */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | static struct file *snd_pcm_file_fd(int fd) |
| 1548 | { |
| 1549 | struct file *file; |
| 1550 | struct inode *inode; |
| 1551 | unsigned short minor; |
| 1552 | file = fget(fd); |
| 1553 | if (!file) |
| 1554 | return NULL; |
| 1555 | inode = file->f_dentry->d_inode; |
| 1556 | if (!S_ISCHR(inode->i_mode) || |
| 1557 | imajor(inode) != snd_major) { |
| 1558 | fput(file); |
| 1559 | return NULL; |
| 1560 | } |
| 1561 | minor = iminor(inode); |
| 1562 | if (minor >= 256 || |
| 1563 | minor % SNDRV_MINOR_DEVICES < SNDRV_MINOR_PCM_PLAYBACK) { |
| 1564 | fput(file); |
| 1565 | return NULL; |
| 1566 | } |
| 1567 | return file; |
| 1568 | } |
| 1569 | |
| 1570 | /* |
| 1571 | * PCM link handling |
| 1572 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1573 | static int snd_pcm_link(struct snd_pcm_substream *substream, int fd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | { |
| 1575 | int res = 0; |
| 1576 | struct file *file; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1577 | struct snd_pcm_file *pcm_file; |
| 1578 | struct snd_pcm_substream *substream1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | |
| 1580 | file = snd_pcm_file_fd(fd); |
| 1581 | if (!file) |
| 1582 | return -EBADFD; |
| 1583 | pcm_file = file->private_data; |
| 1584 | substream1 = pcm_file->substream; |
| 1585 | down_write(&snd_pcm_link_rwsem); |
| 1586 | write_lock_irq(&snd_pcm_link_rwlock); |
| 1587 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN || |
| 1588 | substream->runtime->status->state != substream1->runtime->status->state) { |
| 1589 | res = -EBADFD; |
| 1590 | goto _end; |
| 1591 | } |
| 1592 | if (snd_pcm_stream_linked(substream1)) { |
| 1593 | res = -EALREADY; |
| 1594 | goto _end; |
| 1595 | } |
| 1596 | if (!snd_pcm_stream_linked(substream)) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1597 | substream->group = kmalloc(sizeof(struct snd_pcm_group), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | if (substream->group == NULL) { |
| 1599 | res = -ENOMEM; |
| 1600 | goto _end; |
| 1601 | } |
| 1602 | spin_lock_init(&substream->group->lock); |
| 1603 | INIT_LIST_HEAD(&substream->group->substreams); |
| 1604 | list_add_tail(&substream->link_list, &substream->group->substreams); |
| 1605 | substream->group->count = 1; |
| 1606 | } |
| 1607 | list_add_tail(&substream1->link_list, &substream->group->substreams); |
| 1608 | substream->group->count++; |
| 1609 | substream1->group = substream->group; |
| 1610 | _end: |
| 1611 | write_unlock_irq(&snd_pcm_link_rwlock); |
| 1612 | up_write(&snd_pcm_link_rwsem); |
| 1613 | fput(file); |
| 1614 | return res; |
| 1615 | } |
| 1616 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1617 | static void relink_to_local(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | { |
| 1619 | substream->group = &substream->self_group; |
| 1620 | INIT_LIST_HEAD(&substream->self_group.substreams); |
| 1621 | list_add_tail(&substream->link_list, &substream->self_group.substreams); |
| 1622 | } |
| 1623 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1624 | static int snd_pcm_unlink(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | { |
| 1626 | struct list_head *pos; |
| 1627 | int res = 0; |
| 1628 | |
| 1629 | down_write(&snd_pcm_link_rwsem); |
| 1630 | write_lock_irq(&snd_pcm_link_rwlock); |
| 1631 | if (!snd_pcm_stream_linked(substream)) { |
| 1632 | res = -EALREADY; |
| 1633 | goto _end; |
| 1634 | } |
| 1635 | list_del(&substream->link_list); |
| 1636 | substream->group->count--; |
| 1637 | if (substream->group->count == 1) { /* detach the last stream, too */ |
| 1638 | snd_pcm_group_for_each(pos, substream) { |
| 1639 | relink_to_local(snd_pcm_group_substream_entry(pos)); |
| 1640 | break; |
| 1641 | } |
| 1642 | kfree(substream->group); |
| 1643 | } |
| 1644 | relink_to_local(substream); |
| 1645 | _end: |
| 1646 | write_unlock_irq(&snd_pcm_link_rwlock); |
| 1647 | up_write(&snd_pcm_link_rwsem); |
| 1648 | return res; |
| 1649 | } |
| 1650 | |
| 1651 | /* |
| 1652 | * hw configurator |
| 1653 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1654 | static int snd_pcm_hw_rule_mul(struct snd_pcm_hw_params *params, |
| 1655 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1657 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | snd_interval_mul(hw_param_interval_c(params, rule->deps[0]), |
| 1659 | hw_param_interval_c(params, rule->deps[1]), &t); |
| 1660 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1661 | } |
| 1662 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1663 | static int snd_pcm_hw_rule_div(struct snd_pcm_hw_params *params, |
| 1664 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1666 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | snd_interval_div(hw_param_interval_c(params, rule->deps[0]), |
| 1668 | hw_param_interval_c(params, rule->deps[1]), &t); |
| 1669 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1670 | } |
| 1671 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1672 | static int snd_pcm_hw_rule_muldivk(struct snd_pcm_hw_params *params, |
| 1673 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1675 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | snd_interval_muldivk(hw_param_interval_c(params, rule->deps[0]), |
| 1677 | hw_param_interval_c(params, rule->deps[1]), |
| 1678 | (unsigned long) rule->private, &t); |
| 1679 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1680 | } |
| 1681 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1682 | static int snd_pcm_hw_rule_mulkdiv(struct snd_pcm_hw_params *params, |
| 1683 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1685 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | snd_interval_mulkdiv(hw_param_interval_c(params, rule->deps[0]), |
| 1687 | (unsigned long) rule->private, |
| 1688 | hw_param_interval_c(params, rule->deps[1]), &t); |
| 1689 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1690 | } |
| 1691 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1692 | static int snd_pcm_hw_rule_format(struct snd_pcm_hw_params *params, |
| 1693 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | { |
| 1695 | unsigned int k; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1696 | struct snd_interval *i = hw_param_interval(params, rule->deps[0]); |
| 1697 | struct snd_mask m; |
| 1698 | struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | snd_mask_any(&m); |
| 1700 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { |
| 1701 | int bits; |
| 1702 | if (! snd_mask_test(mask, k)) |
| 1703 | continue; |
| 1704 | bits = snd_pcm_format_physical_width(k); |
| 1705 | if (bits <= 0) |
| 1706 | continue; /* ignore invalid formats */ |
| 1707 | if ((unsigned)bits < i->min || (unsigned)bits > i->max) |
| 1708 | snd_mask_reset(&m, k); |
| 1709 | } |
| 1710 | return snd_mask_refine(mask, &m); |
| 1711 | } |
| 1712 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1713 | static int snd_pcm_hw_rule_sample_bits(struct snd_pcm_hw_params *params, |
| 1714 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1716 | struct snd_interval t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | unsigned int k; |
| 1718 | t.min = UINT_MAX; |
| 1719 | t.max = 0; |
| 1720 | t.openmin = 0; |
| 1721 | t.openmax = 0; |
| 1722 | for (k = 0; k <= SNDRV_PCM_FORMAT_LAST; ++k) { |
| 1723 | int bits; |
| 1724 | if (! snd_mask_test(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), k)) |
| 1725 | continue; |
| 1726 | bits = snd_pcm_format_physical_width(k); |
| 1727 | if (bits <= 0) |
| 1728 | continue; /* ignore invalid formats */ |
| 1729 | if (t.min > (unsigned)bits) |
| 1730 | t.min = bits; |
| 1731 | if (t.max < (unsigned)bits) |
| 1732 | t.max = bits; |
| 1733 | } |
| 1734 | t.integer = 1; |
| 1735 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1736 | } |
| 1737 | |
| 1738 | #if SNDRV_PCM_RATE_5512 != 1 << 0 || SNDRV_PCM_RATE_192000 != 1 << 12 |
| 1739 | #error "Change this table" |
| 1740 | #endif |
| 1741 | |
| 1742 | static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100, |
| 1743 | 48000, 64000, 88200, 96000, 176400, 192000 }; |
| 1744 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1745 | static int snd_pcm_hw_rule_rate(struct snd_pcm_hw_params *params, |
| 1746 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1748 | struct snd_pcm_hardware *hw = rule->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | return snd_interval_list(hw_param_interval(params, rule->var), |
| 1750 | ARRAY_SIZE(rates), rates, hw->rates); |
| 1751 | } |
| 1752 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1753 | static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params, |
| 1754 | struct snd_pcm_hw_rule *rule) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1756 | struct snd_interval t; |
| 1757 | struct snd_pcm_substream *substream = rule->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | t.min = 0; |
| 1759 | t.max = substream->buffer_bytes_max; |
| 1760 | t.openmin = 0; |
| 1761 | t.openmax = 0; |
| 1762 | t.integer = 1; |
| 1763 | return snd_interval_refine(hw_param_interval(params, rule->var), &t); |
| 1764 | } |
| 1765 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1766 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1768 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 1769 | struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | int k, err; |
| 1771 | |
| 1772 | for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) { |
| 1773 | snd_mask_any(constrs_mask(constrs, k)); |
| 1774 | } |
| 1775 | |
| 1776 | for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) { |
| 1777 | snd_interval_any(constrs_interval(constrs, k)); |
| 1778 | } |
| 1779 | |
| 1780 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_CHANNELS)); |
| 1781 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)); |
| 1782 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)); |
| 1783 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)); |
| 1784 | snd_interval_setinteger(constrs_interval(constrs, SNDRV_PCM_HW_PARAM_FRAME_BITS)); |
| 1785 | |
| 1786 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, |
| 1787 | snd_pcm_hw_rule_format, NULL, |
| 1788 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); |
| 1789 | if (err < 0) |
| 1790 | return err; |
| 1791 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| 1792 | snd_pcm_hw_rule_sample_bits, NULL, |
| 1793 | SNDRV_PCM_HW_PARAM_FORMAT, |
| 1794 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); |
| 1795 | if (err < 0) |
| 1796 | return err; |
| 1797 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, |
| 1798 | snd_pcm_hw_rule_div, NULL, |
| 1799 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
| 1800 | if (err < 0) |
| 1801 | return err; |
| 1802 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, |
| 1803 | snd_pcm_hw_rule_mul, NULL, |
| 1804 | SNDRV_PCM_HW_PARAM_SAMPLE_BITS, SNDRV_PCM_HW_PARAM_CHANNELS, -1); |
| 1805 | if (err < 0) |
| 1806 | return err; |
| 1807 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, |
| 1808 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1809 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); |
| 1810 | if (err < 0) |
| 1811 | return err; |
| 1812 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FRAME_BITS, |
| 1813 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1814 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, -1); |
| 1815 | if (err < 0) |
| 1816 | return err; |
| 1817 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 1818 | snd_pcm_hw_rule_div, NULL, |
| 1819 | SNDRV_PCM_HW_PARAM_FRAME_BITS, SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1); |
| 1820 | if (err < 0) |
| 1821 | return err; |
| 1822 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 1823 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1824 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_TIME, -1); |
| 1825 | if (err < 0) |
| 1826 | return err; |
| 1827 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 1828 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1829 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_BUFFER_TIME, -1); |
| 1830 | if (err < 0) |
| 1831 | return err; |
| 1832 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS, |
| 1833 | snd_pcm_hw_rule_div, NULL, |
| 1834 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, -1); |
| 1835 | if (err < 0) |
| 1836 | return err; |
| 1837 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
| 1838 | snd_pcm_hw_rule_div, NULL, |
| 1839 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); |
| 1840 | if (err < 0) |
| 1841 | return err; |
| 1842 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
| 1843 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1844 | SNDRV_PCM_HW_PARAM_PERIOD_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1845 | if (err < 0) |
| 1846 | return err; |
| 1847 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
| 1848 | snd_pcm_hw_rule_muldivk, (void*) 1000000, |
| 1849 | SNDRV_PCM_HW_PARAM_PERIOD_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1850 | if (err < 0) |
| 1851 | return err; |
| 1852 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| 1853 | snd_pcm_hw_rule_mul, NULL, |
| 1854 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_PERIODS, -1); |
| 1855 | if (err < 0) |
| 1856 | return err; |
| 1857 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| 1858 | snd_pcm_hw_rule_mulkdiv, (void*) 8, |
| 1859 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1860 | if (err < 0) |
| 1861 | return err; |
| 1862 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
| 1863 | snd_pcm_hw_rule_muldivk, (void*) 1000000, |
| 1864 | SNDRV_PCM_HW_PARAM_BUFFER_TIME, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1865 | if (err < 0) |
| 1866 | return err; |
| 1867 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, |
| 1868 | snd_pcm_hw_rule_muldivk, (void*) 8, |
| 1869 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1870 | if (err < 0) |
| 1871 | return err; |
| 1872 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, |
| 1873 | snd_pcm_hw_rule_muldivk, (void*) 8, |
| 1874 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_FRAME_BITS, -1); |
| 1875 | if (err < 0) |
| 1876 | return err; |
| 1877 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_TIME, |
| 1878 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1879 | SNDRV_PCM_HW_PARAM_PERIOD_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1880 | if (err < 0) |
| 1881 | return err; |
| 1882 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_TIME, |
| 1883 | snd_pcm_hw_rule_mulkdiv, (void*) 1000000, |
| 1884 | SNDRV_PCM_HW_PARAM_BUFFER_SIZE, SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1885 | if (err < 0) |
| 1886 | return err; |
| 1887 | return 0; |
| 1888 | } |
| 1889 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1890 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1892 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 1893 | struct snd_pcm_hardware *hw = &runtime->hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | int err; |
| 1895 | unsigned int mask = 0; |
| 1896 | |
| 1897 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 1898 | mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; |
| 1899 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) |
| 1900 | mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; |
| 1901 | if (hw->info & SNDRV_PCM_INFO_MMAP) { |
| 1902 | if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) |
| 1903 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; |
| 1904 | if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) |
| 1905 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED; |
| 1906 | if (hw->info & SNDRV_PCM_INFO_COMPLEX) |
| 1907 | mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX; |
| 1908 | } |
| 1909 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask); |
| 1910 | snd_assert(err >= 0, return -EINVAL); |
| 1911 | |
| 1912 | err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats); |
| 1913 | snd_assert(err >= 0, return -EINVAL); |
| 1914 | |
| 1915 | err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD); |
| 1916 | snd_assert(err >= 0, return -EINVAL); |
| 1917 | |
| 1918 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, |
| 1919 | hw->channels_min, hw->channels_max); |
| 1920 | snd_assert(err >= 0, return -EINVAL); |
| 1921 | |
| 1922 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE, |
| 1923 | hw->rate_min, hw->rate_max); |
| 1924 | snd_assert(err >= 0, return -EINVAL); |
| 1925 | |
| 1926 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, |
| 1927 | hw->period_bytes_min, hw->period_bytes_max); |
| 1928 | snd_assert(err >= 0, return -EINVAL); |
| 1929 | |
| 1930 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS, |
| 1931 | hw->periods_min, hw->periods_max); |
| 1932 | snd_assert(err >= 0, return -EINVAL); |
| 1933 | |
| 1934 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, |
| 1935 | hw->period_bytes_min, hw->buffer_bytes_max); |
| 1936 | snd_assert(err >= 0, return -EINVAL); |
| 1937 | |
| 1938 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, |
| 1939 | snd_pcm_hw_rule_buffer_bytes_max, substream, |
| 1940 | SNDRV_PCM_HW_PARAM_BUFFER_BYTES, -1); |
| 1941 | if (err < 0) |
| 1942 | return err; |
| 1943 | |
| 1944 | /* FIXME: remove */ |
| 1945 | if (runtime->dma_bytes) { |
| 1946 | err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes); |
| 1947 | snd_assert(err >= 0, return -EINVAL); |
| 1948 | } |
| 1949 | |
| 1950 | if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) { |
| 1951 | err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
| 1952 | snd_pcm_hw_rule_rate, hw, |
| 1953 | SNDRV_PCM_HW_PARAM_RATE, -1); |
| 1954 | if (err < 0) |
| 1955 | return err; |
| 1956 | } |
| 1957 | |
| 1958 | /* FIXME: this belong to lowlevel */ |
| 1959 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_TICK_TIME, |
| 1960 | 1000000 / HZ, 1000000 / HZ); |
| 1961 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE); |
| 1962 | |
| 1963 | return 0; |
| 1964 | } |
| 1965 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1966 | static void snd_pcm_add_file(struct snd_pcm_str *str, |
| 1967 | struct snd_pcm_file *pcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | { |
| 1969 | pcm_file->next = str->files; |
| 1970 | str->files = pcm_file; |
| 1971 | } |
| 1972 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1973 | static void snd_pcm_remove_file(struct snd_pcm_str *str, |
| 1974 | struct snd_pcm_file *pcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1976 | struct snd_pcm_file * pcm_file1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | if (str->files == pcm_file) { |
| 1978 | str->files = pcm_file->next; |
| 1979 | } else { |
| 1980 | pcm_file1 = str->files; |
| 1981 | while (pcm_file1 && pcm_file1->next != pcm_file) |
| 1982 | pcm_file1 = pcm_file1->next; |
| 1983 | if (pcm_file1 != NULL) |
| 1984 | pcm_file1->next = pcm_file->next; |
| 1985 | } |
| 1986 | } |
| 1987 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1988 | static int snd_pcm_release_file(struct snd_pcm_file * pcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 1990 | struct snd_pcm_substream *substream; |
| 1991 | struct snd_pcm_runtime *runtime; |
| 1992 | struct snd_pcm_str * str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | |
| 1994 | snd_assert(pcm_file != NULL, return -ENXIO); |
| 1995 | substream = pcm_file->substream; |
| 1996 | snd_assert(substream != NULL, return -ENXIO); |
| 1997 | runtime = substream->runtime; |
| 1998 | str = substream->pstr; |
| 1999 | snd_pcm_unlink(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 2000 | if (substream->ffile != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | if (substream->ops->hw_free != NULL) |
| 2002 | substream->ops->hw_free(substream); |
| 2003 | substream->ops->close(substream); |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 2004 | substream->ffile = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | snd_pcm_remove_file(str, pcm_file); |
| 2007 | snd_pcm_release_substream(substream); |
| 2008 | kfree(pcm_file); |
| 2009 | return 0; |
| 2010 | } |
| 2011 | |
| 2012 | static int snd_pcm_open_file(struct file *file, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2013 | struct snd_pcm *pcm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | int stream, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2015 | struct snd_pcm_file **rpcm_file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | { |
| 2017 | int err = 0; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2018 | struct snd_pcm_file *pcm_file; |
| 2019 | struct snd_pcm_substream *substream; |
| 2020 | struct snd_pcm_str *str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | |
| 2022 | snd_assert(rpcm_file != NULL, return -EINVAL); |
| 2023 | *rpcm_file = NULL; |
| 2024 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 2025 | pcm_file = kzalloc(sizeof(*pcm_file), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | if (pcm_file == NULL) { |
| 2027 | return -ENOMEM; |
| 2028 | } |
| 2029 | |
| 2030 | if ((err = snd_pcm_open_substream(pcm, stream, &substream)) < 0) { |
| 2031 | kfree(pcm_file); |
| 2032 | return err; |
| 2033 | } |
| 2034 | |
| 2035 | str = substream->pstr; |
| 2036 | substream->file = pcm_file; |
| 2037 | substream->no_mmap_ctrl = 0; |
| 2038 | |
| 2039 | pcm_file->substream = substream; |
| 2040 | |
| 2041 | snd_pcm_add_file(str, pcm_file); |
| 2042 | |
| 2043 | err = snd_pcm_hw_constraints_init(substream); |
| 2044 | if (err < 0) { |
| 2045 | snd_printd("snd_pcm_hw_constraints_init failed\n"); |
| 2046 | snd_pcm_release_file(pcm_file); |
| 2047 | return err; |
| 2048 | } |
| 2049 | |
| 2050 | if ((err = substream->ops->open(substream)) < 0) { |
| 2051 | snd_pcm_release_file(pcm_file); |
| 2052 | return err; |
| 2053 | } |
Karsten Wiese | 443feb8 | 2005-08-10 11:18:19 +0200 | [diff] [blame] | 2054 | substream->ffile = file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | |
| 2056 | err = snd_pcm_hw_constraints_complete(substream); |
| 2057 | if (err < 0) { |
| 2058 | snd_printd("snd_pcm_hw_constraints_complete failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2059 | snd_pcm_release_file(pcm_file); |
| 2060 | return err; |
| 2061 | } |
| 2062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | file->private_data = pcm_file; |
| 2064 | *rpcm_file = pcm_file; |
| 2065 | return 0; |
| 2066 | } |
| 2067 | |
| 2068 | static int snd_pcm_open(struct inode *inode, struct file *file) |
| 2069 | { |
| 2070 | int cardnum = SNDRV_MINOR_CARD(iminor(inode)); |
| 2071 | int device = SNDRV_MINOR_DEVICE(iminor(inode)); |
| 2072 | int err; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2073 | struct snd_pcm *pcm; |
| 2074 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | wait_queue_t wait; |
| 2076 | |
Takashi Iwai | 7c22f1a | 2005-10-10 11:46:31 +0200 | [diff] [blame] | 2077 | if (device < SNDRV_MINOR_PCM_PLAYBACK || device >= SNDRV_MINOR_DEVICES) |
| 2078 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | pcm = snd_pcm_devices[(cardnum * SNDRV_PCM_DEVICES) + (device % SNDRV_MINOR_PCMS)]; |
| 2080 | if (pcm == NULL) { |
| 2081 | err = -ENODEV; |
| 2082 | goto __error1; |
| 2083 | } |
| 2084 | err = snd_card_file_add(pcm->card, file); |
| 2085 | if (err < 0) |
| 2086 | goto __error1; |
| 2087 | if (!try_module_get(pcm->card->module)) { |
| 2088 | err = -EFAULT; |
| 2089 | goto __error2; |
| 2090 | } |
| 2091 | init_waitqueue_entry(&wait, current); |
| 2092 | add_wait_queue(&pcm->open_wait, &wait); |
| 2093 | down(&pcm->open_mutex); |
| 2094 | while (1) { |
| 2095 | err = snd_pcm_open_file(file, pcm, device >= SNDRV_MINOR_PCM_CAPTURE ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK, &pcm_file); |
| 2096 | if (err >= 0) |
| 2097 | break; |
| 2098 | if (err == -EAGAIN) { |
| 2099 | if (file->f_flags & O_NONBLOCK) { |
| 2100 | err = -EBUSY; |
| 2101 | break; |
| 2102 | } |
| 2103 | } else |
| 2104 | break; |
| 2105 | set_current_state(TASK_INTERRUPTIBLE); |
| 2106 | up(&pcm->open_mutex); |
| 2107 | schedule(); |
| 2108 | down(&pcm->open_mutex); |
| 2109 | if (signal_pending(current)) { |
| 2110 | err = -ERESTARTSYS; |
| 2111 | break; |
| 2112 | } |
| 2113 | } |
| 2114 | remove_wait_queue(&pcm->open_wait, &wait); |
| 2115 | up(&pcm->open_mutex); |
| 2116 | if (err < 0) |
| 2117 | goto __error; |
| 2118 | return err; |
| 2119 | |
| 2120 | __error: |
| 2121 | module_put(pcm->card->module); |
| 2122 | __error2: |
| 2123 | snd_card_file_remove(pcm->card, file); |
| 2124 | __error1: |
| 2125 | return err; |
| 2126 | } |
| 2127 | |
| 2128 | static int snd_pcm_release(struct inode *inode, struct file *file) |
| 2129 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2130 | struct snd_pcm *pcm; |
| 2131 | struct snd_pcm_substream *substream; |
| 2132 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | |
| 2134 | pcm_file = file->private_data; |
| 2135 | substream = pcm_file->substream; |
| 2136 | snd_assert(substream != NULL, return -ENXIO); |
| 2137 | snd_assert(!atomic_read(&substream->runtime->mmap_count), ); |
| 2138 | pcm = substream->pcm; |
| 2139 | snd_pcm_drop(substream); |
| 2140 | fasync_helper(-1, file, 0, &substream->runtime->fasync); |
| 2141 | down(&pcm->open_mutex); |
| 2142 | snd_pcm_release_file(pcm_file); |
| 2143 | up(&pcm->open_mutex); |
| 2144 | wake_up(&pcm->open_wait); |
| 2145 | module_put(pcm->card->module); |
| 2146 | snd_card_file_remove(pcm->card, file); |
| 2147 | return 0; |
| 2148 | } |
| 2149 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2150 | static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream, |
| 2151 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2153 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2154 | snd_pcm_sframes_t appl_ptr; |
| 2155 | snd_pcm_sframes_t ret; |
| 2156 | snd_pcm_sframes_t hw_avail; |
| 2157 | |
| 2158 | if (frames == 0) |
| 2159 | return 0; |
| 2160 | |
| 2161 | snd_pcm_stream_lock_irq(substream); |
| 2162 | switch (runtime->status->state) { |
| 2163 | case SNDRV_PCM_STATE_PREPARED: |
| 2164 | break; |
| 2165 | case SNDRV_PCM_STATE_DRAINING: |
| 2166 | case SNDRV_PCM_STATE_RUNNING: |
| 2167 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2168 | break; |
| 2169 | /* Fall through */ |
| 2170 | case SNDRV_PCM_STATE_XRUN: |
| 2171 | ret = -EPIPE; |
| 2172 | goto __end; |
| 2173 | default: |
| 2174 | ret = -EBADFD; |
| 2175 | goto __end; |
| 2176 | } |
| 2177 | |
| 2178 | hw_avail = snd_pcm_playback_hw_avail(runtime); |
| 2179 | if (hw_avail <= 0) { |
| 2180 | ret = 0; |
| 2181 | goto __end; |
| 2182 | } |
| 2183 | if (frames > (snd_pcm_uframes_t)hw_avail) |
| 2184 | frames = hw_avail; |
| 2185 | else |
| 2186 | frames -= frames % runtime->xfer_align; |
| 2187 | appl_ptr = runtime->control->appl_ptr - frames; |
| 2188 | if (appl_ptr < 0) |
| 2189 | appl_ptr += runtime->boundary; |
| 2190 | runtime->control->appl_ptr = appl_ptr; |
| 2191 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2192 | runtime->sleep_min) |
| 2193 | snd_pcm_tick_prepare(substream); |
| 2194 | ret = frames; |
| 2195 | __end: |
| 2196 | snd_pcm_stream_unlock_irq(substream); |
| 2197 | return ret; |
| 2198 | } |
| 2199 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2200 | static snd_pcm_sframes_t snd_pcm_capture_rewind(struct snd_pcm_substream *substream, |
| 2201 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2203 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | snd_pcm_sframes_t appl_ptr; |
| 2205 | snd_pcm_sframes_t ret; |
| 2206 | snd_pcm_sframes_t hw_avail; |
| 2207 | |
| 2208 | if (frames == 0) |
| 2209 | return 0; |
| 2210 | |
| 2211 | snd_pcm_stream_lock_irq(substream); |
| 2212 | switch (runtime->status->state) { |
| 2213 | case SNDRV_PCM_STATE_PREPARED: |
| 2214 | case SNDRV_PCM_STATE_DRAINING: |
| 2215 | break; |
| 2216 | case SNDRV_PCM_STATE_RUNNING: |
| 2217 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2218 | break; |
| 2219 | /* Fall through */ |
| 2220 | case SNDRV_PCM_STATE_XRUN: |
| 2221 | ret = -EPIPE; |
| 2222 | goto __end; |
| 2223 | default: |
| 2224 | ret = -EBADFD; |
| 2225 | goto __end; |
| 2226 | } |
| 2227 | |
| 2228 | hw_avail = snd_pcm_capture_hw_avail(runtime); |
| 2229 | if (hw_avail <= 0) { |
| 2230 | ret = 0; |
| 2231 | goto __end; |
| 2232 | } |
| 2233 | if (frames > (snd_pcm_uframes_t)hw_avail) |
| 2234 | frames = hw_avail; |
| 2235 | else |
| 2236 | frames -= frames % runtime->xfer_align; |
| 2237 | appl_ptr = runtime->control->appl_ptr - frames; |
| 2238 | if (appl_ptr < 0) |
| 2239 | appl_ptr += runtime->boundary; |
| 2240 | runtime->control->appl_ptr = appl_ptr; |
| 2241 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2242 | runtime->sleep_min) |
| 2243 | snd_pcm_tick_prepare(substream); |
| 2244 | ret = frames; |
| 2245 | __end: |
| 2246 | snd_pcm_stream_unlock_irq(substream); |
| 2247 | return ret; |
| 2248 | } |
| 2249 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2250 | static snd_pcm_sframes_t snd_pcm_playback_forward(struct snd_pcm_substream *substream, |
| 2251 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2253 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | snd_pcm_sframes_t appl_ptr; |
| 2255 | snd_pcm_sframes_t ret; |
| 2256 | snd_pcm_sframes_t avail; |
| 2257 | |
| 2258 | if (frames == 0) |
| 2259 | return 0; |
| 2260 | |
| 2261 | snd_pcm_stream_lock_irq(substream); |
| 2262 | switch (runtime->status->state) { |
| 2263 | case SNDRV_PCM_STATE_PREPARED: |
| 2264 | case SNDRV_PCM_STATE_PAUSED: |
| 2265 | break; |
| 2266 | case SNDRV_PCM_STATE_DRAINING: |
| 2267 | case SNDRV_PCM_STATE_RUNNING: |
| 2268 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2269 | break; |
| 2270 | /* Fall through */ |
| 2271 | case SNDRV_PCM_STATE_XRUN: |
| 2272 | ret = -EPIPE; |
| 2273 | goto __end; |
| 2274 | default: |
| 2275 | ret = -EBADFD; |
| 2276 | goto __end; |
| 2277 | } |
| 2278 | |
| 2279 | avail = snd_pcm_playback_avail(runtime); |
| 2280 | if (avail <= 0) { |
| 2281 | ret = 0; |
| 2282 | goto __end; |
| 2283 | } |
| 2284 | if (frames > (snd_pcm_uframes_t)avail) |
| 2285 | frames = avail; |
| 2286 | else |
| 2287 | frames -= frames % runtime->xfer_align; |
| 2288 | appl_ptr = runtime->control->appl_ptr + frames; |
| 2289 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) |
| 2290 | appl_ptr -= runtime->boundary; |
| 2291 | runtime->control->appl_ptr = appl_ptr; |
| 2292 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2293 | runtime->sleep_min) |
| 2294 | snd_pcm_tick_prepare(substream); |
| 2295 | ret = frames; |
| 2296 | __end: |
| 2297 | snd_pcm_stream_unlock_irq(substream); |
| 2298 | return ret; |
| 2299 | } |
| 2300 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2301 | static snd_pcm_sframes_t snd_pcm_capture_forward(struct snd_pcm_substream *substream, |
| 2302 | snd_pcm_uframes_t frames) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2304 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | snd_pcm_sframes_t appl_ptr; |
| 2306 | snd_pcm_sframes_t ret; |
| 2307 | snd_pcm_sframes_t avail; |
| 2308 | |
| 2309 | if (frames == 0) |
| 2310 | return 0; |
| 2311 | |
| 2312 | snd_pcm_stream_lock_irq(substream); |
| 2313 | switch (runtime->status->state) { |
| 2314 | case SNDRV_PCM_STATE_PREPARED: |
| 2315 | case SNDRV_PCM_STATE_DRAINING: |
| 2316 | case SNDRV_PCM_STATE_PAUSED: |
| 2317 | break; |
| 2318 | case SNDRV_PCM_STATE_RUNNING: |
| 2319 | if (snd_pcm_update_hw_ptr(substream) >= 0) |
| 2320 | break; |
| 2321 | /* Fall through */ |
| 2322 | case SNDRV_PCM_STATE_XRUN: |
| 2323 | ret = -EPIPE; |
| 2324 | goto __end; |
| 2325 | default: |
| 2326 | ret = -EBADFD; |
| 2327 | goto __end; |
| 2328 | } |
| 2329 | |
| 2330 | avail = snd_pcm_capture_avail(runtime); |
| 2331 | if (avail <= 0) { |
| 2332 | ret = 0; |
| 2333 | goto __end; |
| 2334 | } |
| 2335 | if (frames > (snd_pcm_uframes_t)avail) |
| 2336 | frames = avail; |
| 2337 | else |
| 2338 | frames -= frames % runtime->xfer_align; |
| 2339 | appl_ptr = runtime->control->appl_ptr + frames; |
| 2340 | if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary) |
| 2341 | appl_ptr -= runtime->boundary; |
| 2342 | runtime->control->appl_ptr = appl_ptr; |
| 2343 | if (runtime->status->state == SNDRV_PCM_STATE_RUNNING && |
| 2344 | runtime->sleep_min) |
| 2345 | snd_pcm_tick_prepare(substream); |
| 2346 | ret = frames; |
| 2347 | __end: |
| 2348 | snd_pcm_stream_unlock_irq(substream); |
| 2349 | return ret; |
| 2350 | } |
| 2351 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2352 | static int snd_pcm_hwsync(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2353 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2354 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | int err; |
| 2356 | |
| 2357 | snd_pcm_stream_lock_irq(substream); |
| 2358 | switch (runtime->status->state) { |
| 2359 | case SNDRV_PCM_STATE_DRAINING: |
| 2360 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 2361 | goto __badfd; |
| 2362 | case SNDRV_PCM_STATE_RUNNING: |
| 2363 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) |
| 2364 | break; |
| 2365 | /* Fall through */ |
| 2366 | case SNDRV_PCM_STATE_PREPARED: |
| 2367 | case SNDRV_PCM_STATE_SUSPENDED: |
| 2368 | err = 0; |
| 2369 | break; |
| 2370 | case SNDRV_PCM_STATE_XRUN: |
| 2371 | err = -EPIPE; |
| 2372 | break; |
| 2373 | default: |
| 2374 | __badfd: |
| 2375 | err = -EBADFD; |
| 2376 | break; |
| 2377 | } |
| 2378 | snd_pcm_stream_unlock_irq(substream); |
| 2379 | return err; |
| 2380 | } |
| 2381 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2382 | static int snd_pcm_delay(struct snd_pcm_substream *substream, |
| 2383 | snd_pcm_sframes_t __user *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2385 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | int err; |
| 2387 | snd_pcm_sframes_t n = 0; |
| 2388 | |
| 2389 | snd_pcm_stream_lock_irq(substream); |
| 2390 | switch (runtime->status->state) { |
| 2391 | case SNDRV_PCM_STATE_DRAINING: |
| 2392 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) |
| 2393 | goto __badfd; |
| 2394 | case SNDRV_PCM_STATE_RUNNING: |
| 2395 | if ((err = snd_pcm_update_hw_ptr(substream)) < 0) |
| 2396 | break; |
| 2397 | /* Fall through */ |
| 2398 | case SNDRV_PCM_STATE_PREPARED: |
| 2399 | case SNDRV_PCM_STATE_SUSPENDED: |
| 2400 | err = 0; |
| 2401 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 2402 | n = snd_pcm_playback_hw_avail(runtime); |
| 2403 | else |
| 2404 | n = snd_pcm_capture_avail(runtime); |
| 2405 | break; |
| 2406 | case SNDRV_PCM_STATE_XRUN: |
| 2407 | err = -EPIPE; |
| 2408 | break; |
| 2409 | default: |
| 2410 | __badfd: |
| 2411 | err = -EBADFD; |
| 2412 | break; |
| 2413 | } |
| 2414 | snd_pcm_stream_unlock_irq(substream); |
| 2415 | if (!err) |
| 2416 | if (put_user(n, res)) |
| 2417 | err = -EFAULT; |
| 2418 | return err; |
| 2419 | } |
| 2420 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2421 | static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream, |
| 2422 | struct snd_pcm_sync_ptr __user *_sync_ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2423 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2424 | struct snd_pcm_runtime *runtime = substream->runtime; |
| 2425 | struct snd_pcm_sync_ptr sync_ptr; |
| 2426 | volatile struct snd_pcm_mmap_status *status; |
| 2427 | volatile struct snd_pcm_mmap_control *control; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | int err; |
| 2429 | |
| 2430 | memset(&sync_ptr, 0, sizeof(sync_ptr)); |
| 2431 | if (get_user(sync_ptr.flags, (unsigned __user *)&(_sync_ptr->flags))) |
| 2432 | return -EFAULT; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2433 | if (copy_from_user(&sync_ptr.c.control, &(_sync_ptr->c.control), sizeof(struct snd_pcm_mmap_control))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | return -EFAULT; |
| 2435 | status = runtime->status; |
| 2436 | control = runtime->control; |
| 2437 | if (sync_ptr.flags & SNDRV_PCM_SYNC_PTR_HWSYNC) { |
| 2438 | err = snd_pcm_hwsync(substream); |
| 2439 | if (err < 0) |
| 2440 | return err; |
| 2441 | } |
| 2442 | snd_pcm_stream_lock_irq(substream); |
| 2443 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) |
| 2444 | control->appl_ptr = sync_ptr.c.control.appl_ptr; |
| 2445 | else |
| 2446 | sync_ptr.c.control.appl_ptr = control->appl_ptr; |
| 2447 | if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) |
| 2448 | control->avail_min = sync_ptr.c.control.avail_min; |
| 2449 | else |
| 2450 | sync_ptr.c.control.avail_min = control->avail_min; |
| 2451 | sync_ptr.s.status.state = status->state; |
| 2452 | sync_ptr.s.status.hw_ptr = status->hw_ptr; |
| 2453 | sync_ptr.s.status.tstamp = status->tstamp; |
| 2454 | sync_ptr.s.status.suspended_state = status->suspended_state; |
| 2455 | snd_pcm_stream_unlock_irq(substream); |
| 2456 | if (copy_to_user(_sync_ptr, &sync_ptr, sizeof(sync_ptr))) |
| 2457 | return -EFAULT; |
| 2458 | return 0; |
| 2459 | } |
| 2460 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2461 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | unsigned int cmd, void __user *arg); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2463 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2464 | unsigned int cmd, void __user *arg); |
| 2465 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2466 | static int snd_pcm_common_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2467 | unsigned int cmd, void __user *arg) |
| 2468 | { |
| 2469 | snd_assert(substream != NULL, return -ENXIO); |
| 2470 | |
| 2471 | switch (cmd) { |
| 2472 | case SNDRV_PCM_IOCTL_PVERSION: |
| 2473 | return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0; |
| 2474 | case SNDRV_PCM_IOCTL_INFO: |
| 2475 | return snd_pcm_info_user(substream, arg); |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 2476 | case SNDRV_PCM_IOCTL_TSTAMP: /* just for compatibility */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | case SNDRV_PCM_IOCTL_HW_REFINE: |
| 2479 | return snd_pcm_hw_refine_user(substream, arg); |
| 2480 | case SNDRV_PCM_IOCTL_HW_PARAMS: |
| 2481 | return snd_pcm_hw_params_user(substream, arg); |
| 2482 | case SNDRV_PCM_IOCTL_HW_FREE: |
| 2483 | return snd_pcm_hw_free(substream); |
| 2484 | case SNDRV_PCM_IOCTL_SW_PARAMS: |
| 2485 | return snd_pcm_sw_params_user(substream, arg); |
| 2486 | case SNDRV_PCM_IOCTL_STATUS: |
| 2487 | return snd_pcm_status_user(substream, arg); |
| 2488 | case SNDRV_PCM_IOCTL_CHANNEL_INFO: |
| 2489 | return snd_pcm_channel_info_user(substream, arg); |
| 2490 | case SNDRV_PCM_IOCTL_PREPARE: |
| 2491 | return snd_pcm_prepare(substream); |
| 2492 | case SNDRV_PCM_IOCTL_RESET: |
| 2493 | return snd_pcm_reset(substream); |
| 2494 | case SNDRV_PCM_IOCTL_START: |
| 2495 | return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING); |
| 2496 | case SNDRV_PCM_IOCTL_LINK: |
| 2497 | return snd_pcm_link(substream, (int)(unsigned long) arg); |
| 2498 | case SNDRV_PCM_IOCTL_UNLINK: |
| 2499 | return snd_pcm_unlink(substream); |
| 2500 | case SNDRV_PCM_IOCTL_RESUME: |
| 2501 | return snd_pcm_resume(substream); |
| 2502 | case SNDRV_PCM_IOCTL_XRUN: |
| 2503 | return snd_pcm_xrun(substream); |
| 2504 | case SNDRV_PCM_IOCTL_HWSYNC: |
| 2505 | return snd_pcm_hwsync(substream); |
| 2506 | case SNDRV_PCM_IOCTL_DELAY: |
| 2507 | return snd_pcm_delay(substream, arg); |
| 2508 | case SNDRV_PCM_IOCTL_SYNC_PTR: |
| 2509 | return snd_pcm_sync_ptr(substream, arg); |
| 2510 | case SNDRV_PCM_IOCTL_HW_REFINE_OLD: |
| 2511 | return snd_pcm_hw_refine_old_user(substream, arg); |
| 2512 | case SNDRV_PCM_IOCTL_HW_PARAMS_OLD: |
| 2513 | return snd_pcm_hw_params_old_user(substream, arg); |
| 2514 | case SNDRV_PCM_IOCTL_DRAIN: |
| 2515 | return snd_pcm_drain(substream); |
| 2516 | case SNDRV_PCM_IOCTL_DROP: |
| 2517 | return snd_pcm_drop(substream); |
| 2518 | } |
| 2519 | snd_printd("unknown ioctl = 0x%x\n", cmd); |
| 2520 | return -ENOTTY; |
| 2521 | } |
| 2522 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2523 | static int snd_pcm_playback_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2524 | unsigned int cmd, void __user *arg) |
| 2525 | { |
| 2526 | snd_assert(substream != NULL, return -ENXIO); |
| 2527 | snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL); |
| 2528 | switch (cmd) { |
| 2529 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES: |
| 2530 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2531 | struct snd_xferi xferi; |
| 2532 | struct snd_xferi __user *_xferi = arg; |
| 2533 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2534 | snd_pcm_sframes_t result; |
| 2535 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2536 | return -EBADFD; |
| 2537 | if (put_user(0, &_xferi->result)) |
| 2538 | return -EFAULT; |
| 2539 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) |
| 2540 | return -EFAULT; |
| 2541 | result = snd_pcm_lib_write(substream, xferi.buf, xferi.frames); |
| 2542 | __put_user(result, &_xferi->result); |
| 2543 | return result < 0 ? result : 0; |
| 2544 | } |
| 2545 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES: |
| 2546 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2547 | struct snd_xfern xfern; |
| 2548 | struct snd_xfern __user *_xfern = arg; |
| 2549 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | void __user **bufs; |
| 2551 | snd_pcm_sframes_t result; |
| 2552 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2553 | return -EBADFD; |
| 2554 | if (runtime->channels > 128) |
| 2555 | return -EINVAL; |
| 2556 | if (put_user(0, &_xfern->result)) |
| 2557 | return -EFAULT; |
| 2558 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) |
| 2559 | return -EFAULT; |
| 2560 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); |
| 2561 | if (bufs == NULL) |
| 2562 | return -ENOMEM; |
| 2563 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { |
| 2564 | kfree(bufs); |
| 2565 | return -EFAULT; |
| 2566 | } |
| 2567 | result = snd_pcm_lib_writev(substream, bufs, xfern.frames); |
| 2568 | kfree(bufs); |
| 2569 | __put_user(result, &_xfern->result); |
| 2570 | return result < 0 ? result : 0; |
| 2571 | } |
| 2572 | case SNDRV_PCM_IOCTL_REWIND: |
| 2573 | { |
| 2574 | snd_pcm_uframes_t frames; |
| 2575 | snd_pcm_uframes_t __user *_frames = arg; |
| 2576 | snd_pcm_sframes_t result; |
| 2577 | if (get_user(frames, _frames)) |
| 2578 | return -EFAULT; |
| 2579 | if (put_user(0, _frames)) |
| 2580 | return -EFAULT; |
| 2581 | result = snd_pcm_playback_rewind(substream, frames); |
| 2582 | __put_user(result, _frames); |
| 2583 | return result < 0 ? result : 0; |
| 2584 | } |
| 2585 | case SNDRV_PCM_IOCTL_FORWARD: |
| 2586 | { |
| 2587 | snd_pcm_uframes_t frames; |
| 2588 | snd_pcm_uframes_t __user *_frames = arg; |
| 2589 | snd_pcm_sframes_t result; |
| 2590 | if (get_user(frames, _frames)) |
| 2591 | return -EFAULT; |
| 2592 | if (put_user(0, _frames)) |
| 2593 | return -EFAULT; |
| 2594 | result = snd_pcm_playback_forward(substream, frames); |
| 2595 | __put_user(result, _frames); |
| 2596 | return result < 0 ? result : 0; |
| 2597 | } |
| 2598 | case SNDRV_PCM_IOCTL_PAUSE: |
| 2599 | { |
| 2600 | int res; |
| 2601 | snd_pcm_stream_lock_irq(substream); |
| 2602 | res = snd_pcm_pause(substream, (int)(unsigned long)arg); |
| 2603 | snd_pcm_stream_unlock_irq(substream); |
| 2604 | return res; |
| 2605 | } |
| 2606 | } |
| 2607 | return snd_pcm_common_ioctl1(substream, cmd, arg); |
| 2608 | } |
| 2609 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2610 | static int snd_pcm_capture_ioctl1(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2611 | unsigned int cmd, void __user *arg) |
| 2612 | { |
| 2613 | snd_assert(substream != NULL, return -ENXIO); |
| 2614 | snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL); |
| 2615 | switch (cmd) { |
| 2616 | case SNDRV_PCM_IOCTL_READI_FRAMES: |
| 2617 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2618 | struct snd_xferi xferi; |
| 2619 | struct snd_xferi __user *_xferi = arg; |
| 2620 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2621 | snd_pcm_sframes_t result; |
| 2622 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2623 | return -EBADFD; |
| 2624 | if (put_user(0, &_xferi->result)) |
| 2625 | return -EFAULT; |
| 2626 | if (copy_from_user(&xferi, _xferi, sizeof(xferi))) |
| 2627 | return -EFAULT; |
| 2628 | result = snd_pcm_lib_read(substream, xferi.buf, xferi.frames); |
| 2629 | __put_user(result, &_xferi->result); |
| 2630 | return result < 0 ? result : 0; |
| 2631 | } |
| 2632 | case SNDRV_PCM_IOCTL_READN_FRAMES: |
| 2633 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2634 | struct snd_xfern xfern; |
| 2635 | struct snd_xfern __user *_xfern = arg; |
| 2636 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | void *bufs; |
| 2638 | snd_pcm_sframes_t result; |
| 2639 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2640 | return -EBADFD; |
| 2641 | if (runtime->channels > 128) |
| 2642 | return -EINVAL; |
| 2643 | if (put_user(0, &_xfern->result)) |
| 2644 | return -EFAULT; |
| 2645 | if (copy_from_user(&xfern, _xfern, sizeof(xfern))) |
| 2646 | return -EFAULT; |
| 2647 | bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL); |
| 2648 | if (bufs == NULL) |
| 2649 | return -ENOMEM; |
| 2650 | if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) { |
| 2651 | kfree(bufs); |
| 2652 | return -EFAULT; |
| 2653 | } |
| 2654 | result = snd_pcm_lib_readv(substream, bufs, xfern.frames); |
| 2655 | kfree(bufs); |
| 2656 | __put_user(result, &_xfern->result); |
| 2657 | return result < 0 ? result : 0; |
| 2658 | } |
| 2659 | case SNDRV_PCM_IOCTL_REWIND: |
| 2660 | { |
| 2661 | snd_pcm_uframes_t frames; |
| 2662 | snd_pcm_uframes_t __user *_frames = arg; |
| 2663 | snd_pcm_sframes_t result; |
| 2664 | if (get_user(frames, _frames)) |
| 2665 | return -EFAULT; |
| 2666 | if (put_user(0, _frames)) |
| 2667 | return -EFAULT; |
| 2668 | result = snd_pcm_capture_rewind(substream, frames); |
| 2669 | __put_user(result, _frames); |
| 2670 | return result < 0 ? result : 0; |
| 2671 | } |
| 2672 | case SNDRV_PCM_IOCTL_FORWARD: |
| 2673 | { |
| 2674 | snd_pcm_uframes_t frames; |
| 2675 | snd_pcm_uframes_t __user *_frames = arg; |
| 2676 | snd_pcm_sframes_t result; |
| 2677 | if (get_user(frames, _frames)) |
| 2678 | return -EFAULT; |
| 2679 | if (put_user(0, _frames)) |
| 2680 | return -EFAULT; |
| 2681 | result = snd_pcm_capture_forward(substream, frames); |
| 2682 | __put_user(result, _frames); |
| 2683 | return result < 0 ? result : 0; |
| 2684 | } |
| 2685 | } |
| 2686 | return snd_pcm_common_ioctl1(substream, cmd, arg); |
| 2687 | } |
| 2688 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2689 | static long snd_pcm_playback_ioctl(struct file *file, unsigned int cmd, |
| 2690 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2691 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2692 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2693 | |
| 2694 | pcm_file = file->private_data; |
| 2695 | |
| 2696 | if (((cmd >> 8) & 0xff) != 'A') |
| 2697 | return -ENOTTY; |
| 2698 | |
| 2699 | return snd_pcm_playback_ioctl1(pcm_file->substream, cmd, (void __user *)arg); |
| 2700 | } |
| 2701 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2702 | static long snd_pcm_capture_ioctl(struct file *file, unsigned int cmd, |
| 2703 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2705 | struct snd_pcm_file *pcm_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2706 | |
| 2707 | pcm_file = file->private_data; |
| 2708 | |
| 2709 | if (((cmd >> 8) & 0xff) != 'A') |
| 2710 | return -ENOTTY; |
| 2711 | |
| 2712 | return snd_pcm_capture_ioctl1(pcm_file->substream, cmd, (void __user *)arg); |
| 2713 | } |
| 2714 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2715 | int snd_pcm_kernel_playback_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2716 | unsigned int cmd, void *arg) |
| 2717 | { |
| 2718 | mm_segment_t fs; |
| 2719 | int result; |
| 2720 | |
| 2721 | fs = snd_enter_user(); |
| 2722 | result = snd_pcm_playback_ioctl1(substream, cmd, (void __user *)arg); |
| 2723 | snd_leave_user(fs); |
| 2724 | return result; |
| 2725 | } |
| 2726 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2727 | int snd_pcm_kernel_capture_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | unsigned int cmd, void *arg) |
| 2729 | { |
| 2730 | mm_segment_t fs; |
| 2731 | int result; |
| 2732 | |
| 2733 | fs = snd_enter_user(); |
| 2734 | result = snd_pcm_capture_ioctl1(substream, cmd, (void __user *)arg); |
| 2735 | snd_leave_user(fs); |
| 2736 | return result; |
| 2737 | } |
| 2738 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2739 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2740 | unsigned int cmd, void *arg) |
| 2741 | { |
| 2742 | switch (substream->stream) { |
| 2743 | case SNDRV_PCM_STREAM_PLAYBACK: |
| 2744 | return snd_pcm_kernel_playback_ioctl(substream, cmd, arg); |
| 2745 | case SNDRV_PCM_STREAM_CAPTURE: |
| 2746 | return snd_pcm_kernel_capture_ioctl(substream, cmd, arg); |
| 2747 | default: |
| 2748 | return -EINVAL; |
| 2749 | } |
| 2750 | } |
| 2751 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2752 | static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count, |
| 2753 | loff_t * offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2755 | struct snd_pcm_file *pcm_file; |
| 2756 | struct snd_pcm_substream *substream; |
| 2757 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | snd_pcm_sframes_t result; |
| 2759 | |
| 2760 | pcm_file = file->private_data; |
| 2761 | substream = pcm_file->substream; |
| 2762 | snd_assert(substream != NULL, return -ENXIO); |
| 2763 | runtime = substream->runtime; |
| 2764 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2765 | return -EBADFD; |
| 2766 | if (!frame_aligned(runtime, count)) |
| 2767 | return -EINVAL; |
| 2768 | count = bytes_to_frames(runtime, count); |
| 2769 | result = snd_pcm_lib_read(substream, buf, count); |
| 2770 | if (result > 0) |
| 2771 | result = frames_to_bytes(runtime, result); |
| 2772 | return result; |
| 2773 | } |
| 2774 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2775 | static ssize_t snd_pcm_write(struct file *file, const char __user *buf, |
| 2776 | size_t count, loff_t * offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2777 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2778 | struct snd_pcm_file *pcm_file; |
| 2779 | struct snd_pcm_substream *substream; |
| 2780 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2781 | snd_pcm_sframes_t result; |
| 2782 | |
| 2783 | pcm_file = file->private_data; |
| 2784 | substream = pcm_file->substream; |
| 2785 | snd_assert(substream != NULL, result = -ENXIO; goto end); |
| 2786 | runtime = substream->runtime; |
| 2787 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 2788 | result = -EBADFD; |
| 2789 | goto end; |
| 2790 | } |
| 2791 | if (!frame_aligned(runtime, count)) { |
| 2792 | result = -EINVAL; |
| 2793 | goto end; |
| 2794 | } |
| 2795 | count = bytes_to_frames(runtime, count); |
| 2796 | result = snd_pcm_lib_write(substream, buf, count); |
| 2797 | if (result > 0) |
| 2798 | result = frames_to_bytes(runtime, result); |
| 2799 | end: |
| 2800 | return result; |
| 2801 | } |
| 2802 | |
| 2803 | static ssize_t snd_pcm_readv(struct file *file, const struct iovec *_vector, |
| 2804 | unsigned long count, loff_t * offset) |
| 2805 | |
| 2806 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2807 | struct snd_pcm_file *pcm_file; |
| 2808 | struct snd_pcm_substream *substream; |
| 2809 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | snd_pcm_sframes_t result; |
| 2811 | unsigned long i; |
| 2812 | void __user **bufs; |
| 2813 | snd_pcm_uframes_t frames; |
| 2814 | |
| 2815 | pcm_file = file->private_data; |
| 2816 | substream = pcm_file->substream; |
| 2817 | snd_assert(substream != NULL, return -ENXIO); |
| 2818 | runtime = substream->runtime; |
| 2819 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 2820 | return -EBADFD; |
| 2821 | if (count > 1024 || count != runtime->channels) |
| 2822 | return -EINVAL; |
| 2823 | if (!frame_aligned(runtime, _vector->iov_len)) |
| 2824 | return -EINVAL; |
| 2825 | frames = bytes_to_samples(runtime, _vector->iov_len); |
| 2826 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); |
| 2827 | if (bufs == NULL) |
| 2828 | return -ENOMEM; |
| 2829 | for (i = 0; i < count; ++i) |
| 2830 | bufs[i] = _vector[i].iov_base; |
| 2831 | result = snd_pcm_lib_readv(substream, bufs, frames); |
| 2832 | if (result > 0) |
| 2833 | result = frames_to_bytes(runtime, result); |
| 2834 | kfree(bufs); |
| 2835 | return result; |
| 2836 | } |
| 2837 | |
| 2838 | static ssize_t snd_pcm_writev(struct file *file, const struct iovec *_vector, |
| 2839 | unsigned long count, loff_t * offset) |
| 2840 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2841 | struct snd_pcm_file *pcm_file; |
| 2842 | struct snd_pcm_substream *substream; |
| 2843 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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, result = -ENXIO; goto end); |
| 2852 | runtime = substream->runtime; |
| 2853 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 2854 | result = -EBADFD; |
| 2855 | goto end; |
| 2856 | } |
| 2857 | if (count > 128 || count != runtime->channels || |
| 2858 | !frame_aligned(runtime, _vector->iov_len)) { |
| 2859 | result = -EINVAL; |
| 2860 | goto end; |
| 2861 | } |
| 2862 | frames = bytes_to_samples(runtime, _vector->iov_len); |
| 2863 | bufs = kmalloc(sizeof(void *) * count, GFP_KERNEL); |
| 2864 | if (bufs == NULL) |
| 2865 | return -ENOMEM; |
| 2866 | for (i = 0; i < count; ++i) |
| 2867 | bufs[i] = _vector[i].iov_base; |
| 2868 | result = snd_pcm_lib_writev(substream, bufs, frames); |
| 2869 | if (result > 0) |
| 2870 | result = frames_to_bytes(runtime, result); |
| 2871 | kfree(bufs); |
| 2872 | end: |
| 2873 | return result; |
| 2874 | } |
| 2875 | |
| 2876 | static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait) |
| 2877 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2878 | struct snd_pcm_file *pcm_file; |
| 2879 | struct snd_pcm_substream *substream; |
| 2880 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2881 | unsigned int mask; |
| 2882 | snd_pcm_uframes_t avail; |
| 2883 | |
| 2884 | pcm_file = file->private_data; |
| 2885 | |
| 2886 | substream = pcm_file->substream; |
| 2887 | snd_assert(substream != NULL, return -ENXIO); |
| 2888 | runtime = substream->runtime; |
| 2889 | |
| 2890 | poll_wait(file, &runtime->sleep, wait); |
| 2891 | |
| 2892 | snd_pcm_stream_lock_irq(substream); |
| 2893 | avail = snd_pcm_playback_avail(runtime); |
| 2894 | switch (runtime->status->state) { |
| 2895 | case SNDRV_PCM_STATE_RUNNING: |
| 2896 | case SNDRV_PCM_STATE_PREPARED: |
| 2897 | case SNDRV_PCM_STATE_PAUSED: |
| 2898 | if (avail >= runtime->control->avail_min) { |
| 2899 | mask = POLLOUT | POLLWRNORM; |
| 2900 | break; |
| 2901 | } |
| 2902 | /* Fall through */ |
| 2903 | case SNDRV_PCM_STATE_DRAINING: |
| 2904 | mask = 0; |
| 2905 | break; |
| 2906 | default: |
| 2907 | mask = POLLOUT | POLLWRNORM | POLLERR; |
| 2908 | break; |
| 2909 | } |
| 2910 | snd_pcm_stream_unlock_irq(substream); |
| 2911 | return mask; |
| 2912 | } |
| 2913 | |
| 2914 | static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait) |
| 2915 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2916 | struct snd_pcm_file *pcm_file; |
| 2917 | struct snd_pcm_substream *substream; |
| 2918 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2919 | unsigned int mask; |
| 2920 | snd_pcm_uframes_t avail; |
| 2921 | |
| 2922 | pcm_file = file->private_data; |
| 2923 | |
| 2924 | substream = pcm_file->substream; |
| 2925 | snd_assert(substream != NULL, return -ENXIO); |
| 2926 | runtime = substream->runtime; |
| 2927 | |
| 2928 | poll_wait(file, &runtime->sleep, wait); |
| 2929 | |
| 2930 | snd_pcm_stream_lock_irq(substream); |
| 2931 | avail = snd_pcm_capture_avail(runtime); |
| 2932 | switch (runtime->status->state) { |
| 2933 | case SNDRV_PCM_STATE_RUNNING: |
| 2934 | case SNDRV_PCM_STATE_PREPARED: |
| 2935 | case SNDRV_PCM_STATE_PAUSED: |
| 2936 | if (avail >= runtime->control->avail_min) { |
| 2937 | mask = POLLIN | POLLRDNORM; |
| 2938 | break; |
| 2939 | } |
| 2940 | mask = 0; |
| 2941 | break; |
| 2942 | case SNDRV_PCM_STATE_DRAINING: |
| 2943 | if (avail > 0) { |
| 2944 | mask = POLLIN | POLLRDNORM; |
| 2945 | break; |
| 2946 | } |
| 2947 | /* Fall through */ |
| 2948 | default: |
| 2949 | mask = POLLIN | POLLRDNORM | POLLERR; |
| 2950 | break; |
| 2951 | } |
| 2952 | snd_pcm_stream_unlock_irq(substream); |
| 2953 | return mask; |
| 2954 | } |
| 2955 | |
| 2956 | /* |
| 2957 | * mmap support |
| 2958 | */ |
| 2959 | |
| 2960 | /* |
| 2961 | * Only on coherent architectures, we can mmap the status and the control records |
| 2962 | * for effcient data transfer. On others, we have to use HWSYNC ioctl... |
| 2963 | */ |
| 2964 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) |
| 2965 | /* |
| 2966 | * mmap status record |
| 2967 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2968 | static struct page * snd_pcm_mmap_status_nopage(struct vm_area_struct *area, |
| 2969 | unsigned long address, int *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2970 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2971 | struct snd_pcm_substream *substream = area->vm_private_data; |
| 2972 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2973 | struct page * page; |
| 2974 | |
| 2975 | if (substream == NULL) |
| 2976 | return NOPAGE_OOM; |
| 2977 | runtime = substream->runtime; |
| 2978 | page = virt_to_page(runtime->status); |
Nick Piggin | b581003 | 2005-10-29 18:16:12 -0700 | [diff] [blame] | 2979 | get_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | if (type) |
| 2981 | *type = VM_FAULT_MINOR; |
| 2982 | return page; |
| 2983 | } |
| 2984 | |
| 2985 | static struct vm_operations_struct snd_pcm_vm_ops_status = |
| 2986 | { |
| 2987 | .nopage = snd_pcm_mmap_status_nopage, |
| 2988 | }; |
| 2989 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2990 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2991 | struct vm_area_struct *area) |
| 2992 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 2993 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | long size; |
| 2995 | if (!(area->vm_flags & VM_READ)) |
| 2996 | return -EINVAL; |
| 2997 | runtime = substream->runtime; |
| 2998 | snd_assert(runtime != NULL, return -EAGAIN); |
| 2999 | size = area->vm_end - area->vm_start; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3000 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | return -EINVAL; |
| 3002 | area->vm_ops = &snd_pcm_vm_ops_status; |
| 3003 | area->vm_private_data = substream; |
| 3004 | area->vm_flags |= VM_RESERVED; |
| 3005 | return 0; |
| 3006 | } |
| 3007 | |
| 3008 | /* |
| 3009 | * mmap control record |
| 3010 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3011 | static struct page * snd_pcm_mmap_control_nopage(struct vm_area_struct *area, |
| 3012 | unsigned long address, int *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3013 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3014 | struct snd_pcm_substream *substream = area->vm_private_data; |
| 3015 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3016 | struct page * page; |
| 3017 | |
| 3018 | if (substream == NULL) |
| 3019 | return NOPAGE_OOM; |
| 3020 | runtime = substream->runtime; |
| 3021 | page = virt_to_page(runtime->control); |
Nick Piggin | b581003 | 2005-10-29 18:16:12 -0700 | [diff] [blame] | 3022 | get_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | if (type) |
| 3024 | *type = VM_FAULT_MINOR; |
| 3025 | return page; |
| 3026 | } |
| 3027 | |
| 3028 | static struct vm_operations_struct snd_pcm_vm_ops_control = |
| 3029 | { |
| 3030 | .nopage = snd_pcm_mmap_control_nopage, |
| 3031 | }; |
| 3032 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3033 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3034 | struct vm_area_struct *area) |
| 3035 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3036 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3037 | long size; |
| 3038 | if (!(area->vm_flags & VM_READ)) |
| 3039 | return -EINVAL; |
| 3040 | runtime = substream->runtime; |
| 3041 | snd_assert(runtime != NULL, return -EAGAIN); |
| 3042 | size = area->vm_end - area->vm_start; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3043 | if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3044 | return -EINVAL; |
| 3045 | area->vm_ops = &snd_pcm_vm_ops_control; |
| 3046 | area->vm_private_data = substream; |
| 3047 | area->vm_flags |= VM_RESERVED; |
| 3048 | return 0; |
| 3049 | } |
| 3050 | #else /* ! coherent mmap */ |
| 3051 | /* |
| 3052 | * don't support mmap for status and control records. |
| 3053 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3054 | static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | struct vm_area_struct *area) |
| 3056 | { |
| 3057 | return -ENXIO; |
| 3058 | } |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3059 | static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3060 | struct vm_area_struct *area) |
| 3061 | { |
| 3062 | return -ENXIO; |
| 3063 | } |
| 3064 | #endif /* coherent mmap */ |
| 3065 | |
| 3066 | /* |
| 3067 | * nopage callback for mmapping a RAM page |
| 3068 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3069 | static struct page *snd_pcm_mmap_data_nopage(struct vm_area_struct *area, |
| 3070 | unsigned long address, int *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3071 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3072 | struct snd_pcm_substream *substream = area->vm_private_data; |
| 3073 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3074 | unsigned long offset; |
| 3075 | struct page * page; |
| 3076 | void *vaddr; |
| 3077 | size_t dma_bytes; |
| 3078 | |
| 3079 | if (substream == NULL) |
| 3080 | return NOPAGE_OOM; |
| 3081 | runtime = substream->runtime; |
| 3082 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3083 | offset += address - area->vm_start; |
| 3084 | snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM); |
| 3085 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
| 3086 | if (offset > dma_bytes - PAGE_SIZE) |
| 3087 | return NOPAGE_SIGBUS; |
| 3088 | if (substream->ops->page) { |
| 3089 | page = substream->ops->page(substream, offset); |
| 3090 | if (! page) |
| 3091 | return NOPAGE_OOM; |
| 3092 | } else { |
| 3093 | vaddr = runtime->dma_area + offset; |
| 3094 | page = virt_to_page(vaddr); |
| 3095 | } |
Nick Piggin | b581003 | 2005-10-29 18:16:12 -0700 | [diff] [blame] | 3096 | get_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3097 | if (type) |
| 3098 | *type = VM_FAULT_MINOR; |
| 3099 | return page; |
| 3100 | } |
| 3101 | |
| 3102 | static struct vm_operations_struct snd_pcm_vm_ops_data = |
| 3103 | { |
| 3104 | .open = snd_pcm_mmap_data_open, |
| 3105 | .close = snd_pcm_mmap_data_close, |
| 3106 | .nopage = snd_pcm_mmap_data_nopage, |
| 3107 | }; |
| 3108 | |
| 3109 | /* |
| 3110 | * mmap the DMA buffer on RAM |
| 3111 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3112 | static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, |
| 3113 | struct vm_area_struct *area) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3114 | { |
| 3115 | area->vm_ops = &snd_pcm_vm_ops_data; |
| 3116 | area->vm_private_data = substream; |
| 3117 | area->vm_flags |= VM_RESERVED; |
| 3118 | atomic_inc(&substream->runtime->mmap_count); |
| 3119 | return 0; |
| 3120 | } |
| 3121 | |
| 3122 | /* |
| 3123 | * mmap the DMA buffer on I/O memory area |
| 3124 | */ |
| 3125 | #if SNDRV_PCM_INFO_MMAP_IOMEM |
| 3126 | static struct vm_operations_struct snd_pcm_vm_ops_data_mmio = |
| 3127 | { |
| 3128 | .open = snd_pcm_mmap_data_open, |
| 3129 | .close = snd_pcm_mmap_data_close, |
| 3130 | }; |
| 3131 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3132 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, |
| 3133 | struct vm_area_struct *area) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3134 | { |
| 3135 | long size; |
| 3136 | unsigned long offset; |
| 3137 | |
| 3138 | #ifdef pgprot_noncached |
| 3139 | area->vm_page_prot = pgprot_noncached(area->vm_page_prot); |
| 3140 | #endif |
| 3141 | area->vm_ops = &snd_pcm_vm_ops_data_mmio; |
| 3142 | area->vm_private_data = substream; |
| 3143 | area->vm_flags |= VM_IO; |
| 3144 | size = area->vm_end - area->vm_start; |
| 3145 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3146 | if (io_remap_pfn_range(area, area->vm_start, |
| 3147 | (substream->runtime->dma_addr + offset) >> PAGE_SHIFT, |
| 3148 | size, area->vm_page_prot)) |
| 3149 | return -EAGAIN; |
| 3150 | atomic_inc(&substream->runtime->mmap_count); |
| 3151 | return 0; |
| 3152 | } |
| 3153 | #endif /* SNDRV_PCM_INFO_MMAP */ |
| 3154 | |
| 3155 | /* |
| 3156 | * mmap DMA buffer |
| 3157 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3158 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3159 | struct vm_area_struct *area) |
| 3160 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3161 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3162 | long size; |
| 3163 | unsigned long offset; |
| 3164 | size_t dma_bytes; |
| 3165 | |
| 3166 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 3167 | if (!(area->vm_flags & (VM_WRITE|VM_READ))) |
| 3168 | return -EINVAL; |
| 3169 | } else { |
| 3170 | if (!(area->vm_flags & VM_READ)) |
| 3171 | return -EINVAL; |
| 3172 | } |
| 3173 | runtime = substream->runtime; |
| 3174 | snd_assert(runtime != NULL, return -EAGAIN); |
| 3175 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 3176 | return -EBADFD; |
| 3177 | if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) |
| 3178 | return -ENXIO; |
| 3179 | if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED || |
| 3180 | runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) |
| 3181 | return -EINVAL; |
| 3182 | size = area->vm_end - area->vm_start; |
| 3183 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3184 | dma_bytes = PAGE_ALIGN(runtime->dma_bytes); |
| 3185 | if ((size_t)size > dma_bytes) |
| 3186 | return -EINVAL; |
| 3187 | if (offset > dma_bytes - size) |
| 3188 | return -EINVAL; |
| 3189 | |
| 3190 | if (substream->ops->mmap) |
| 3191 | return substream->ops->mmap(substream, area); |
| 3192 | else |
| 3193 | return snd_pcm_default_mmap(substream, area); |
| 3194 | } |
| 3195 | |
| 3196 | static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area) |
| 3197 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3198 | struct snd_pcm_file * pcm_file; |
| 3199 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3200 | unsigned long offset; |
| 3201 | |
| 3202 | pcm_file = file->private_data; |
| 3203 | substream = pcm_file->substream; |
| 3204 | snd_assert(substream != NULL, return -ENXIO); |
| 3205 | |
| 3206 | offset = area->vm_pgoff << PAGE_SHIFT; |
| 3207 | switch (offset) { |
| 3208 | case SNDRV_PCM_MMAP_OFFSET_STATUS: |
| 3209 | if (substream->no_mmap_ctrl) |
| 3210 | return -ENXIO; |
| 3211 | return snd_pcm_mmap_status(substream, file, area); |
| 3212 | case SNDRV_PCM_MMAP_OFFSET_CONTROL: |
| 3213 | if (substream->no_mmap_ctrl) |
| 3214 | return -ENXIO; |
| 3215 | return snd_pcm_mmap_control(substream, file, area); |
| 3216 | default: |
| 3217 | return snd_pcm_mmap_data(substream, file, area); |
| 3218 | } |
| 3219 | return 0; |
| 3220 | } |
| 3221 | |
| 3222 | static int snd_pcm_fasync(int fd, struct file * file, int on) |
| 3223 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3224 | struct snd_pcm_file * pcm_file; |
| 3225 | struct snd_pcm_substream *substream; |
| 3226 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3227 | int err; |
| 3228 | |
| 3229 | pcm_file = file->private_data; |
| 3230 | substream = pcm_file->substream; |
| 3231 | snd_assert(substream != NULL, return -ENXIO); |
| 3232 | runtime = substream->runtime; |
| 3233 | |
| 3234 | err = fasync_helper(fd, file, on, &runtime->fasync); |
| 3235 | if (err < 0) |
| 3236 | return err; |
| 3237 | return 0; |
| 3238 | } |
| 3239 | |
| 3240 | /* |
| 3241 | * ioctl32 compat |
| 3242 | */ |
| 3243 | #ifdef CONFIG_COMPAT |
| 3244 | #include "pcm_compat.c" |
| 3245 | #else |
| 3246 | #define snd_pcm_ioctl_compat NULL |
| 3247 | #endif |
| 3248 | |
| 3249 | /* |
| 3250 | * To be removed helpers to keep binary compatibility |
| 3251 | */ |
| 3252 | |
| 3253 | #define __OLD_TO_NEW_MASK(x) ((x&7)|((x&0x07fffff8)<<5)) |
| 3254 | #define __NEW_TO_OLD_MASK(x) ((x&7)|((x&0xffffff00)>>5)) |
| 3255 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3256 | static void snd_pcm_hw_convert_from_old_params(struct snd_pcm_hw_params *params, |
| 3257 | struct snd_pcm_hw_params_old *oparams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3258 | { |
| 3259 | unsigned int i; |
| 3260 | |
| 3261 | memset(params, 0, sizeof(*params)); |
| 3262 | params->flags = oparams->flags; |
| 3263 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) |
| 3264 | params->masks[i].bits[0] = oparams->masks[i]; |
| 3265 | memcpy(params->intervals, oparams->intervals, sizeof(oparams->intervals)); |
| 3266 | params->rmask = __OLD_TO_NEW_MASK(oparams->rmask); |
| 3267 | params->cmask = __OLD_TO_NEW_MASK(oparams->cmask); |
| 3268 | params->info = oparams->info; |
| 3269 | params->msbits = oparams->msbits; |
| 3270 | params->rate_num = oparams->rate_num; |
| 3271 | params->rate_den = oparams->rate_den; |
| 3272 | params->fifo_size = oparams->fifo_size; |
| 3273 | } |
| 3274 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3275 | static void snd_pcm_hw_convert_to_old_params(struct snd_pcm_hw_params_old *oparams, |
| 3276 | struct snd_pcm_hw_params *params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3277 | { |
| 3278 | unsigned int i; |
| 3279 | |
| 3280 | memset(oparams, 0, sizeof(*oparams)); |
| 3281 | oparams->flags = params->flags; |
| 3282 | for (i = 0; i < ARRAY_SIZE(oparams->masks); i++) |
| 3283 | oparams->masks[i] = params->masks[i].bits[0]; |
| 3284 | memcpy(oparams->intervals, params->intervals, sizeof(oparams->intervals)); |
| 3285 | oparams->rmask = __NEW_TO_OLD_MASK(params->rmask); |
| 3286 | oparams->cmask = __NEW_TO_OLD_MASK(params->cmask); |
| 3287 | oparams->info = params->info; |
| 3288 | oparams->msbits = params->msbits; |
| 3289 | oparams->rate_num = params->rate_num; |
| 3290 | oparams->rate_den = params->rate_den; |
| 3291 | oparams->fifo_size = params->fifo_size; |
| 3292 | } |
| 3293 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3294 | static int snd_pcm_hw_refine_old_user(struct snd_pcm_substream *substream, |
| 3295 | struct snd_pcm_hw_params_old __user * _oparams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3296 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3297 | struct snd_pcm_hw_params *params; |
| 3298 | struct snd_pcm_hw_params_old *oparams = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3299 | int err; |
| 3300 | |
| 3301 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 3302 | if (!params) { |
| 3303 | err = -ENOMEM; |
| 3304 | goto out; |
| 3305 | } |
| 3306 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); |
| 3307 | if (!oparams) { |
| 3308 | err = -ENOMEM; |
| 3309 | goto out; |
| 3310 | } |
| 3311 | |
| 3312 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { |
| 3313 | err = -EFAULT; |
| 3314 | goto out; |
| 3315 | } |
| 3316 | snd_pcm_hw_convert_from_old_params(params, oparams); |
| 3317 | err = snd_pcm_hw_refine(substream, params); |
| 3318 | snd_pcm_hw_convert_to_old_params(oparams, params); |
| 3319 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { |
| 3320 | if (!err) |
| 3321 | err = -EFAULT; |
| 3322 | } |
| 3323 | out: |
| 3324 | kfree(params); |
| 3325 | kfree(oparams); |
| 3326 | return err; |
| 3327 | } |
| 3328 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3329 | static int snd_pcm_hw_params_old_user(struct snd_pcm_substream *substream, |
| 3330 | struct snd_pcm_hw_params_old __user * _oparams) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3331 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3332 | struct snd_pcm_hw_params *params; |
| 3333 | struct snd_pcm_hw_params_old *oparams = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3334 | int err; |
| 3335 | |
| 3336 | params = kmalloc(sizeof(*params), GFP_KERNEL); |
| 3337 | if (!params) { |
| 3338 | err = -ENOMEM; |
| 3339 | goto out; |
| 3340 | } |
| 3341 | oparams = kmalloc(sizeof(*oparams), GFP_KERNEL); |
| 3342 | if (!oparams) { |
| 3343 | err = -ENOMEM; |
| 3344 | goto out; |
| 3345 | } |
| 3346 | if (copy_from_user(oparams, _oparams, sizeof(*oparams))) { |
| 3347 | err = -EFAULT; |
| 3348 | goto out; |
| 3349 | } |
| 3350 | snd_pcm_hw_convert_from_old_params(params, oparams); |
| 3351 | err = snd_pcm_hw_params(substream, params); |
| 3352 | snd_pcm_hw_convert_to_old_params(oparams, params); |
| 3353 | if (copy_to_user(_oparams, oparams, sizeof(*oparams))) { |
| 3354 | if (!err) |
| 3355 | err = -EFAULT; |
| 3356 | } |
| 3357 | out: |
| 3358 | kfree(params); |
| 3359 | kfree(oparams); |
| 3360 | return err; |
| 3361 | } |
| 3362 | |
| 3363 | /* |
| 3364 | * Register section |
| 3365 | */ |
| 3366 | |
| 3367 | static struct file_operations snd_pcm_f_ops_playback = { |
| 3368 | .owner = THIS_MODULE, |
| 3369 | .write = snd_pcm_write, |
| 3370 | .writev = snd_pcm_writev, |
| 3371 | .open = snd_pcm_open, |
| 3372 | .release = snd_pcm_release, |
| 3373 | .poll = snd_pcm_playback_poll, |
| 3374 | .unlocked_ioctl = snd_pcm_playback_ioctl, |
| 3375 | .compat_ioctl = snd_pcm_ioctl_compat, |
| 3376 | .mmap = snd_pcm_mmap, |
| 3377 | .fasync = snd_pcm_fasync, |
| 3378 | }; |
| 3379 | |
| 3380 | static struct file_operations snd_pcm_f_ops_capture = { |
| 3381 | .owner = THIS_MODULE, |
| 3382 | .read = snd_pcm_read, |
| 3383 | .readv = snd_pcm_readv, |
| 3384 | .open = snd_pcm_open, |
| 3385 | .release = snd_pcm_release, |
| 3386 | .poll = snd_pcm_capture_poll, |
| 3387 | .unlocked_ioctl = snd_pcm_capture_ioctl, |
| 3388 | .compat_ioctl = snd_pcm_ioctl_compat, |
| 3389 | .mmap = snd_pcm_mmap, |
| 3390 | .fasync = snd_pcm_fasync, |
| 3391 | }; |
| 3392 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame^] | 3393 | struct snd_minor snd_pcm_reg[2] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3394 | { |
| 3395 | { |
| 3396 | .comment = "digital audio playback", |
| 3397 | .f_ops = &snd_pcm_f_ops_playback, |
| 3398 | }, |
| 3399 | { |
| 3400 | .comment = "digital audio capture", |
| 3401 | .f_ops = &snd_pcm_f_ops_capture, |
| 3402 | } |
| 3403 | }; |