1 /* 2 * Routines for control of the AK4114 via I2C and 4-wire serial interface 3 * IEC958 (S/PDIF) receiver by Asahi Kasei 4 * Copyright (c) by Jaroslav Kysela <perex@suse.cz> 5 * 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 * 21 */ 22 23 #include <sound/driver.h> 24 #include <linux/slab.h> 25 #include <linux/delay.h> 26 #include <sound/core.h> 27 #include <sound/control.h> 28 #include <sound/pcm.h> 29 #include <sound/ak4114.h> 30 #include <sound/asoundef.h> 31 32 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); 33 MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei"); 34 MODULE_LICENSE("GPL"); 35 36 #define AK4114_ADDR 0x00 /* fixed address */ 37 38 static void ak4114_stats(struct work_struct *work); 39 static void ak4114_init_regs(struct ak4114 *chip); 40 41 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val) 42 { 43 ak4114->write(ak4114->private_data, reg, val); 44 if (reg <= AK4114_REG_INT1_MASK) 45 ak4114->regmap[reg] = val; 46 else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4) 47 ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val; 48 } 49 50 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg) 51 { 52 return ak4114->read(ak4114->private_data, reg); 53 } 54 55 #if 0 56 static void reg_dump(struct ak4114 *ak4114) 57 { 58 int i; 59 60 printk(KERN_DEBUG "AK4114 REG DUMP:\n"); 61 for (i = 0; i < 0x20; i++) 62 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0); 63 } 64 #endif 65 66 static void snd_ak4114_free(struct ak4114 *chip) 67 { 68 chip->init = 1; /* don't schedule new work */ 69 mb(); 70 cancel_delayed_work(&chip->work); 71 flush_scheduled_work(); 72 kfree(chip); 73 } 74 75 static int snd_ak4114_dev_free(struct snd_device *device) 76 { 77 struct ak4114 *chip = device->device_data; 78 snd_ak4114_free(chip); 79 return 0; 80 } 81 82 int snd_ak4114_create(struct snd_card *card, 83 ak4114_read_t *read, ak4114_write_t *write, 84 const unsigned char pgm[7], const unsigned char txcsb[5], 85 void *private_data, struct ak4114 **r_ak4114) 86 { 87 struct ak4114 *chip; 88 int err = 0; 89 unsigned char reg; 90 static struct snd_device_ops ops = { 91 .dev_free = snd_ak4114_dev_free, 92 }; 93 94 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 95 if (chip == NULL) 96 return -ENOMEM; 97 spin_lock_init(&chip->lock); 98 chip->card = card; 99 chip->read = read; 100 chip->write = write; 101 chip->private_data = private_data; 102 INIT_DELAYED_WORK(&chip->work, ak4114_stats); 103 104 for (reg = 0; reg < 7; reg++) 105 chip->regmap[reg] = pgm[reg]; 106 for (reg = 0; reg < 5; reg++) 107 chip->txcsb[reg] = txcsb[reg]; 108 109 ak4114_init_regs(chip); 110 111 chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT); 112 chip->rcs1 = reg_read(chip, AK4114_REG_RCS1); 113 114 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 115 goto __fail; 116 117 if (r_ak4114) 118 *r_ak4114 = chip; 119 return 0; 120 121 __fail: 122 snd_ak4114_free(chip); 123 return err < 0 ? err : -EIO; 124 } 125 126 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val) 127 { 128 if (reg <= AK4114_REG_INT1_MASK) 129 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val); 130 else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4) 131 reg_write(chip, reg, 132 (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val); 133 } 134 135 static void ak4114_init_regs(struct ak4114 *chip) 136 { 137 unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg; 138 139 /* bring the chip to reset state and powerdown state */ 140 reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN)); 141 udelay(200); 142 /* release reset, but leave powerdown */ 143 reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN); 144 udelay(200); 145 for (reg = 1; reg < 7; reg++) 146 reg_write(chip, reg, chip->regmap[reg]); 147 for (reg = 0; reg < 5; reg++) 148 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]); 149 /* release powerdown, everything is initialized now */ 150 reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN); 151 } 152 153 void snd_ak4114_reinit(struct ak4114 *chip) 154 { 155 chip->init = 1; 156 mb(); 157 flush_scheduled_work(); 158 ak4114_init_regs(chip); 159 /* bring up statistics / event queing */ 160 chip->init = 0; 161 if (chip->kctls[0]) 162 schedule_delayed_work(&chip->work, HZ / 10); 163 } 164 165 static unsigned int external_rate(unsigned char rcs1) 166 { 167 switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) { 168 case AK4114_FS_32000HZ: return 32000; 169 case AK4114_FS_44100HZ: return 44100; 170 case AK4114_FS_48000HZ: return 48000; 171 case AK4114_FS_88200HZ: return 88200; 172 case AK4114_FS_96000HZ: return 96000; 173 case AK4114_FS_176400HZ: return 176400; 174 case AK4114_FS_192000HZ: return 192000; 175 default: return 0; 176 } 177 } 178 179 static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol, 180 struct snd_ctl_elem_info *uinfo) 181 { 182 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 183 uinfo->count = 1; 184 uinfo->value.integer.min = 0; 185 uinfo->value.integer.max = LONG_MAX; 186 return 0; 187 } 188 189 static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol, 190 struct snd_ctl_elem_value *ucontrol) 191 { 192 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 193 long *ptr; 194 195 spin_lock_irq(&chip->lock); 196 ptr = (long *)(((char *)chip) + kcontrol->private_value); 197 ucontrol->value.integer.value[0] = *ptr; 198 *ptr = 0; 199 spin_unlock_irq(&chip->lock); 200 return 0; 201 } 202 203 static int snd_ak4114_in_bit_info(struct snd_kcontrol *kcontrol, 204 struct snd_ctl_elem_info *uinfo) 205 { 206 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; 207 uinfo->count = 1; 208 uinfo->value.integer.min = 0; 209 uinfo->value.integer.max = 1; 210 return 0; 211 } 212 213 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol, 214 struct snd_ctl_elem_value *ucontrol) 215 { 216 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 217 unsigned char reg = kcontrol->private_value & 0xff; 218 unsigned char bit = (kcontrol->private_value >> 8) & 0xff; 219 unsigned char inv = (kcontrol->private_value >> 31) & 1; 220 221 ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv; 222 return 0; 223 } 224 225 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol, 226 struct snd_ctl_elem_info *uinfo) 227 { 228 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 229 uinfo->count = 1; 230 uinfo->value.integer.min = 0; 231 uinfo->value.integer.max = 192000; 232 return 0; 233 } 234 235 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol, 236 struct snd_ctl_elem_value *ucontrol) 237 { 238 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 239 240 ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1)); 241 return 0; 242 } 243 244 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 245 { 246 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 247 uinfo->count = 1; 248 return 0; 249 } 250 251 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol, 252 struct snd_ctl_elem_value *ucontrol) 253 { 254 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 255 unsigned i; 256 257 for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++) 258 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i); 259 return 0; 260 } 261 262 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol, 263 struct snd_ctl_elem_value *ucontrol) 264 { 265 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 266 unsigned i; 267 268 for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++) 269 ucontrol->value.iec958.status[i] = chip->txcsb[i]; 270 return 0; 271 } 272 273 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol, 274 struct snd_ctl_elem_value *ucontrol) 275 { 276 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 277 unsigned i; 278 279 for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++) 280 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]); 281 return 0; 282 } 283 284 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 285 { 286 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 287 uinfo->count = 1; 288 return 0; 289 } 290 291 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol, 292 struct snd_ctl_elem_value *ucontrol) 293 { 294 memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE); 295 return 0; 296 } 297 298 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 299 { 300 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 301 uinfo->value.integer.min = 0; 302 uinfo->value.integer.max = 0xffff; 303 uinfo->count = 4; 304 return 0; 305 } 306 307 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol, 308 struct snd_ctl_elem_value *ucontrol) 309 { 310 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 311 unsigned short tmp; 312 313 ucontrol->value.integer.value[0] = 0xf8f2; 314 ucontrol->value.integer.value[1] = 0x4e1f; 315 tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8); 316 ucontrol->value.integer.value[2] = tmp; 317 tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8); 318 ucontrol->value.integer.value[3] = tmp; 319 return 0; 320 } 321 322 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) 323 { 324 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; 325 uinfo->count = AK4114_REG_QSUB_SIZE; 326 return 0; 327 } 328 329 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol, 330 struct snd_ctl_elem_value *ucontrol) 331 { 332 struct ak4114 *chip = snd_kcontrol_chip(kcontrol); 333 unsigned i; 334 335 for (i = 0; i < AK4114_REG_QSUB_SIZE; i++) 336 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i); 337 return 0; 338 } 339 340 /* Don't forget to change AK4114_CONTROLS define!!! */ 341 static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = { 342 { 343 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 344 .name = "IEC958 Parity Errors", 345 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 346 .info = snd_ak4114_in_error_info, 347 .get = snd_ak4114_in_error_get, 348 .private_value = offsetof(struct ak4114, parity_errors), 349 }, 350 { 351 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 352 .name = "IEC958 V-Bit Errors", 353 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 354 .info = snd_ak4114_in_error_info, 355 .get = snd_ak4114_in_error_get, 356 .private_value = offsetof(struct ak4114, v_bit_errors), 357 }, 358 { 359 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 360 .name = "IEC958 C-CRC Errors", 361 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 362 .info = snd_ak4114_in_error_info, 363 .get = snd_ak4114_in_error_get, 364 .private_value = offsetof(struct ak4114, ccrc_errors), 365 }, 366 { 367 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 368 .name = "IEC958 Q-CRC Errors", 369 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 370 .info = snd_ak4114_in_error_info, 371 .get = snd_ak4114_in_error_get, 372 .private_value = offsetof(struct ak4114, qcrc_errors), 373 }, 374 { 375 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 376 .name = "IEC958 External Rate", 377 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 378 .info = snd_ak4114_rate_info, 379 .get = snd_ak4114_rate_get, 380 }, 381 { 382 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 383 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK), 384 .access = SNDRV_CTL_ELEM_ACCESS_READ, 385 .info = snd_ak4114_spdif_mask_info, 386 .get = snd_ak4114_spdif_mask_get, 387 }, 388 { 389 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 390 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT), 391 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 392 .info = snd_ak4114_spdif_info, 393 .get = snd_ak4114_spdif_playback_get, 394 .put = snd_ak4114_spdif_playback_put, 395 }, 396 { 397 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 398 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK), 399 .access = SNDRV_CTL_ELEM_ACCESS_READ, 400 .info = snd_ak4114_spdif_mask_info, 401 .get = snd_ak4114_spdif_mask_get, 402 }, 403 { 404 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 405 .name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT), 406 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 407 .info = snd_ak4114_spdif_info, 408 .get = snd_ak4114_spdif_get, 409 }, 410 { 411 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 412 .name = "IEC958 Preample Capture Default", 413 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 414 .info = snd_ak4114_spdif_pinfo, 415 .get = snd_ak4114_spdif_pget, 416 }, 417 { 418 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 419 .name = "IEC958 Q-subcode Capture Default", 420 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 421 .info = snd_ak4114_spdif_qinfo, 422 .get = snd_ak4114_spdif_qget, 423 }, 424 { 425 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 426 .name = "IEC958 Audio", 427 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 428 .info = snd_ak4114_in_bit_info, 429 .get = snd_ak4114_in_bit_get, 430 .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0, 431 }, 432 { 433 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 434 .name = "IEC958 Non-PCM Bitstream", 435 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 436 .info = snd_ak4114_in_bit_info, 437 .get = snd_ak4114_in_bit_get, 438 .private_value = (6<<8) | AK4114_REG_RCS0, 439 }, 440 { 441 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 442 .name = "IEC958 DTS Bitstream", 443 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 444 .info = snd_ak4114_in_bit_info, 445 .get = snd_ak4114_in_bit_get, 446 .private_value = (3<<8) | AK4114_REG_RCS0, 447 }, 448 { 449 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 450 .name = "IEC958 PPL Lock Status", 451 .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, 452 .info = snd_ak4114_in_bit_info, 453 .get = snd_ak4114_in_bit_get, 454 .private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0, 455 } 456 }; 457 458 int snd_ak4114_build(struct ak4114 *ak4114, 459 struct snd_pcm_substream *ply_substream, 460 struct snd_pcm_substream *cap_substream) 461 { 462 struct snd_kcontrol *kctl; 463 unsigned int idx; 464 int err; 465 466 snd_assert(cap_substream, return -EINVAL); 467 ak4114->playback_substream = ply_substream; 468 ak4114->capture_substream = cap_substream; 469 for (idx = 0; idx < AK4114_CONTROLS; idx++) { 470 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114); 471 if (kctl == NULL) 472 return -ENOMEM; 473 if (strstr(kctl->id.name, "Playback")) { 474 if (ply_substream == NULL) { 475 snd_ctl_free_one(kctl); 476 ak4114->kctls[idx] = NULL; 477 continue; 478 } 479 kctl->id.device = ply_substream->pcm->device; 480 kctl->id.subdevice = ply_substream->number; 481 } else { 482 kctl->id.device = cap_substream->pcm->device; 483 kctl->id.subdevice = cap_substream->number; 484 } 485 err = snd_ctl_add(ak4114->card, kctl); 486 if (err < 0) 487 return err; 488 ak4114->kctls[idx] = kctl; 489 } 490 /* trigger workq */ 491 schedule_delayed_work(&ak4114->work, HZ / 10); 492 return 0; 493 } 494 495 /* notify kcontrols if any parameters are changed */ 496 static void ak4114_notify(struct ak4114 *ak4114, 497 unsigned char rcs0, unsigned char rcs1, 498 unsigned char c0, unsigned char c1) 499 { 500 if (!ak4114->kctls[0]) 501 return; 502 503 if (rcs0 & AK4114_PAR) 504 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 505 &ak4114->kctls[0]->id); 506 if (rcs0 & AK4114_V) 507 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 508 &ak4114->kctls[1]->id); 509 if (rcs1 & AK4114_CCRC) 510 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 511 &ak4114->kctls[2]->id); 512 if (rcs1 & AK4114_QCRC) 513 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 514 &ak4114->kctls[3]->id); 515 516 /* rate change */ 517 if (c1 & 0xf0) 518 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 519 &ak4114->kctls[4]->id); 520 521 if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT)) 522 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 523 &ak4114->kctls[9]->id); 524 if (c0 & AK4114_QINT) 525 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 526 &ak4114->kctls[10]->id); 527 528 if (c0 & AK4114_AUDION) 529 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 530 &ak4114->kctls[11]->id); 531 if (c0 & AK4114_AUTO) 532 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 533 &ak4114->kctls[12]->id); 534 if (c0 & AK4114_DTSCD) 535 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 536 &ak4114->kctls[13]->id); 537 if (c0 & AK4114_UNLCK) 538 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, 539 &ak4114->kctls[14]->id); 540 } 541 542 int snd_ak4114_external_rate(struct ak4114 *ak4114) 543 { 544 unsigned char rcs1; 545 546 rcs1 = reg_read(ak4114, AK4114_REG_RCS1); 547 return external_rate(rcs1); 548 } 549 550 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags) 551 { 552 struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL; 553 unsigned long _flags; 554 int res = 0; 555 unsigned char rcs0, rcs1; 556 unsigned char c0, c1; 557 558 rcs1 = reg_read(ak4114, AK4114_REG_RCS1); 559 if (flags & AK4114_CHECK_NO_STAT) 560 goto __rate; 561 rcs0 = reg_read(ak4114, AK4114_REG_RCS0); 562 spin_lock_irqsave(&ak4114->lock, _flags); 563 if (rcs0 & AK4114_PAR) 564 ak4114->parity_errors++; 565 if (rcs1 & AK4114_V) 566 ak4114->v_bit_errors++; 567 if (rcs1 & AK4114_CCRC) 568 ak4114->ccrc_errors++; 569 if (rcs1 & AK4114_QCRC) 570 ak4114->qcrc_errors++; 571 c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^ 572 (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)); 573 c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0); 574 ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT); 575 ak4114->rcs1 = rcs1; 576 spin_unlock_irqrestore(&ak4114->lock, _flags); 577 578 ak4114_notify(ak4114, rcs0, rcs1, c0, c1); 579 if (ak4114->change_callback && (c0 | c1) != 0) 580 ak4114->change_callback(ak4114, c0, c1); 581 582 __rate: 583 /* compare rate */ 584 res = external_rate(rcs1); 585 if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) { 586 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags); 587 if (snd_pcm_running(ak4114->capture_substream)) { 588 // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res); 589 snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING); 590 res = 1; 591 } 592 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags); 593 } 594 return res; 595 } 596 597 static void ak4114_stats(struct work_struct *work) 598 { 599 struct ak4114 *chip = container_of(work, struct ak4114, work.work); 600 601 if (!chip->init) 602 snd_ak4114_check_rate_and_errors(chip, 0); 603 604 schedule_delayed_work(&chip->work, HZ / 10); 605 } 606 607 EXPORT_SYMBOL(snd_ak4114_create); 608 EXPORT_SYMBOL(snd_ak4114_reg_write); 609 EXPORT_SYMBOL(snd_ak4114_reinit); 610 EXPORT_SYMBOL(snd_ak4114_build); 611 EXPORT_SYMBOL(snd_ak4114_external_rate); 612 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors); 613