sound/i2c/other/ak4114.c

   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(void *);
  39
  40 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
  41 {
  42         ak4114->write(ak4114->private_data, reg, val);
  43         if (reg <= AK4114_REG_INT1_MASK)
  44                 ak4114->regmap[reg] = val;
  45         else if (reg >= AK4114_REG_RXCSB0 && reg <= AK4114_REG_TXCSB4)
  46                 ak4114->txcsb[reg-AK4114_REG_RXCSB0] = val;
  47 }
  48
  49 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
  50 {
  51         return ak4114->read(ak4114->private_data, reg);
  52 }
  53
  54 #if 0
  55 static void reg_dump(struct ak4114 *ak4114)
  56 {
  57         int i;
  58
  59         printk(KERN_DEBUG "AK4114 REG DUMP:\n");
  60         for (i = 0; i < 0x20; i++)
  61                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
  62 }
  63 #endif
  64
  65 static void snd_ak4114_free(struct ak4114 *chip)
  66 {
  67         chip->init = 1; /* don't schedule new work */
  68         mb();
  69         if (chip->workqueue != NULL) {
  70                 flush_workqueue(chip->workqueue);
  71                 destroy_workqueue(chip->workqueue);
  72         }
  73         kfree(chip);
  74 }
  75
  76 static int snd_ak4114_dev_free(struct snd_device *device)
  77 {
  78         struct ak4114 *chip = device->device_data;
  79         snd_ak4114_free(chip);
  80         return 0;
  81 }
  82
  83 int snd_ak4114_create(struct snd_card *card,
  84                       ak4114_read_t *read, ak4114_write_t *write,
  85                       unsigned char pgm[7], unsigned char txcsb[5],
  86                       void *private_data, struct ak4114 **r_ak4114)
  87 {
  88         struct ak4114 *chip;
  89         int err = 0;
  90         unsigned char reg;
  91         static struct snd_device_ops ops = {
  92                 .dev_free =     snd_ak4114_dev_free,
  93         };
  94
  95         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
  96         if (chip == NULL)
  97                 return -ENOMEM;
  98         spin_lock_init(&chip->lock);
  99         chip->card = card;
 100         chip->read = read;
 101         chip->write = write;
 102         chip->private_data = private_data;
 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         chip->workqueue = create_workqueue("snd-ak4114");
 110         if (chip->workqueue == NULL) {
 111                 kfree(chip);
 112                 return -ENOMEM;
 113         }
 114
 115         snd_ak4114_reinit(chip);
 116
 117         chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
 118         chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
 119
 120         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
 121                 goto __fail;
 122
 123         if (r_ak4114)
 124                 *r_ak4114 = chip;
 125         return 0;
 126
 127       __fail:
 128         snd_ak4114_free(chip);
 129         return err < 0 ? err : -EIO;
 130 }
 131
 132 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
 133 {
 134         if (reg <= AK4114_REG_INT1_MASK)
 135                 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
 136         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
 137                 reg_write(chip, reg, (chip->txcsb[reg] & ~mask) | val);
 138 }
 139
 140 void snd_ak4114_reinit(struct ak4114 *chip)
 141 {
 142         unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
 143
 144         chip->init = 1;
 145         mb();
 146         flush_workqueue(chip->workqueue);
 147         /* bring the chip to reset state and powerdown state */
 148         reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
 149         udelay(200);
 150         /* release reset, but leave powerdown */
 151         reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
 152         udelay(200);
 153         for (reg = 1; reg < 7; reg++)
 154                 reg_write(chip, reg, chip->regmap[reg]);
 155         for (reg = 0; reg < 5; reg++)
 156                 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
 157         /* release powerdown, everything is initialized now */
 158         reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
 159         /* bring up statistics / event queing */
 160         chip->init = 0;
 161         INIT_WORK(&chip->work, ak4114_stats, chip);
 162         queue_delayed_work(chip->workqueue, &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_RCS1,
 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_RCS1,
 447 }
 448 };
 449
 450 int snd_ak4114_build(struct ak4114 *ak4114,
 451                      struct snd_pcm_substream *ply_substream,
 452                      struct snd_pcm_substream *cap_substream)
 453 {
 454         struct snd_kcontrol *kctl;
 455         unsigned int idx;
 456         int err;
 457
 458         snd_assert(cap_substream, return -EINVAL);
 459         ak4114->playback_substream = ply_substream;
 460         ak4114->capture_substream = cap_substream;
 461         for (idx = 0; idx < AK4114_CONTROLS; idx++) {
 462                 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
 463                 if (kctl == NULL)
 464                         return -ENOMEM;
 465                 if (!strstr(kctl->id.name, "Playback")) {
 466                         if (ply_substream == NULL) {
 467                                 snd_ctl_free_one(kctl);
 468                                 ak4114->kctls[idx] = NULL;
 469                                 continue;
 470                         }
 471                         kctl->id.device = ply_substream->pcm->device;
 472                         kctl->id.subdevice = ply_substream->number;
 473                 } else {
 474                         kctl->id.device = cap_substream->pcm->device;
 475                         kctl->id.subdevice = cap_substream->number;
 476                 }
 477                 err = snd_ctl_add(ak4114->card, kctl);
 478                 if (err < 0)
 479                         return err;
 480                 ak4114->kctls[idx] = kctl;
 481         }
 482         return 0;
 483 }
 484
 485 int snd_ak4114_external_rate(struct ak4114 *ak4114)
 486 {
 487         unsigned char rcs1;
 488
 489         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 490         return external_rate(rcs1);
 491 }
 492
 493 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
 494 {
 495         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
 496         unsigned long _flags;
 497         int res = 0;
 498         unsigned char rcs0, rcs1;
 499         unsigned char c0, c1;
 500
 501         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 502         if (flags & AK4114_CHECK_NO_STAT)
 503                 goto __rate;
 504         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
 505         spin_lock_irqsave(&ak4114->lock, _flags);
 506         if (rcs0 & AK4114_PAR)
 507                 ak4114->parity_errors++;
 508         if (rcs1 & AK4114_V)
 509                 ak4114->v_bit_errors++;
 510         if (rcs1 & AK4114_CCRC)
 511                 ak4114->ccrc_errors++;
 512         if (rcs1 & AK4114_QCRC)
 513                 ak4114->qcrc_errors++;
 514         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
 515                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
 516         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
 517         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
 518         ak4114->rcs1 = rcs1;
 519         spin_unlock_irqrestore(&ak4114->lock, _flags);
 520
 521         if (rcs0 & AK4114_PAR)
 522                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[0]->id);
 523         if (rcs0 & AK4114_V)
 524                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[1]->id);
 525         if (rcs1 & AK4114_CCRC)
 526                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[2]->id);
 527         if (rcs1 & AK4114_QCRC)
 528                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[3]->id);
 529
 530         /* rate change */
 531         if (c1 & 0xf0)
 532                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[4]->id);
 533
 534         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
 535                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[9]->id);
 536         if (c0 & AK4114_QINT)
 537                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[10]->id);
 538
 539         if (c0 & AK4114_AUDION)
 540                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[11]->id);
 541         if (c0 & AK4114_AUTO)
 542                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[12]->id);
 543         if (c0 & AK4114_DTSCD)
 544                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4114->kctls[13]->id);
 545
 546         if (ak4114->change_callback && (c0 | c1) != 0)
 547                 ak4114->change_callback(ak4114, c0, c1);
 548
 549       __rate:
 550         /* compare rate */
 551         res = external_rate(rcs1);
 552         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 553                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
 554                 if (snd_pcm_running(ak4114->capture_substream)) {
 555                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
 556                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
 557                         res = 1;
 558                 }
 559                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
 560         }
 561         return res;
 562 }
 563
 564 static void ak4114_stats(void *data)
 565 {
 566         struct ak4114 *chip = (struct ak4114 *)data;
 567
 568         if (chip->init)
 569                 return;
 570         snd_ak4114_check_rate_and_errors(chip, 0);
 571         queue_delayed_work(chip->workqueue, &chip->work, HZ / 10);
 572 }
 573
 574 EXPORT_SYMBOL(snd_ak4114_create);
 575 EXPORT_SYMBOL(snd_ak4114_reg_write);
 576 EXPORT_SYMBOL(snd_ak4114_reinit);
 577 EXPORT_SYMBOL(snd_ak4114_build);
 578 EXPORT_SYMBOL(snd_ak4114_external_rate);
 579 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);