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@perex.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 <linux/slab.h>
  24 #include <linux/delay.h>
  25 #include <linux/module.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 #include <sound/info.h>
  32
  33 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  34 MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
  35 MODULE_LICENSE("GPL");
  36
  37 #define AK4114_ADDR                     0x00 /* fixed address */
  38
  39 static void ak4114_stats(struct work_struct *work);
  40 static void ak4114_init_regs(struct ak4114 *chip);
  41
  42 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
  43 {
  44         ak4114->write(ak4114->private_data, reg, val);
  45         if (reg <= AK4114_REG_INT1_MASK)
  46                 ak4114->regmap[reg] = val;
  47         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
  48                 ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
  49 }
  50
  51 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
  52 {
  53         return ak4114->read(ak4114->private_data, reg);
  54 }
  55
  56 #if 0
  57 static void reg_dump(struct ak4114 *ak4114)
  58 {
  59         int i;
  60
  61         printk(KERN_DEBUG "AK4114 REG DUMP:\n");
  62         for (i = 0; i < 0x20; i++)
  63                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
  64 }
  65 #endif
  66
  67 static void snd_ak4114_free(struct ak4114 *chip)
  68 {
  69         chip->init = 1; /* don't schedule new work */
  70         mb();
  71         cancel_delayed_work_sync(&chip->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_delayed_work_sync(&chip->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 #define snd_ak4114_in_bit_info          snd_ctl_boolean_mono_info
 204
 205 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
 206                                  struct snd_ctl_elem_value *ucontrol)
 207 {
 208         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 209         unsigned char reg = kcontrol->private_value & 0xff;
 210         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
 211         unsigned char inv = (kcontrol->private_value >> 31) & 1;
 212
 213         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
 214         return 0;
 215 }
 216
 217 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
 218                                 struct snd_ctl_elem_info *uinfo)
 219 {
 220         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 221         uinfo->count = 1;
 222         uinfo->value.integer.min = 0;
 223         uinfo->value.integer.max = 192000;
 224         return 0;
 225 }
 226
 227 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
 228                                struct snd_ctl_elem_value *ucontrol)
 229 {
 230         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 231
 232         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
 233         return 0;
 234 }
 235
 236 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 237 {
 238         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 239         uinfo->count = 1;
 240         return 0;
 241 }
 242
 243 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
 244                                 struct snd_ctl_elem_value *ucontrol)
 245 {
 246         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 247         unsigned i;
 248
 249         for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
 250                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
 251         return 0;
 252 }
 253
 254 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
 255                                          struct snd_ctl_elem_value *ucontrol)
 256 {
 257         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 258         unsigned i;
 259
 260         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
 261                 ucontrol->value.iec958.status[i] = chip->txcsb[i];
 262         return 0;
 263 }
 264
 265 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
 266                                          struct snd_ctl_elem_value *ucontrol)
 267 {
 268         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 269         unsigned i;
 270
 271         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
 272                 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
 273         return 0;
 274 }
 275
 276 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 277 {
 278         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 279         uinfo->count = 1;
 280         return 0;
 281 }
 282
 283 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
 284                                       struct snd_ctl_elem_value *ucontrol)
 285 {
 286         memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
 287         return 0;
 288 }
 289
 290 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 291 {
 292         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 293         uinfo->value.integer.min = 0;
 294         uinfo->value.integer.max = 0xffff;
 295         uinfo->count = 4;
 296         return 0;
 297 }
 298
 299 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
 300                                  struct snd_ctl_elem_value *ucontrol)
 301 {
 302         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 303         unsigned short tmp;
 304
 305         ucontrol->value.integer.value[0] = 0xf8f2;
 306         ucontrol->value.integer.value[1] = 0x4e1f;
 307         tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
 308         ucontrol->value.integer.value[2] = tmp;
 309         tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
 310         ucontrol->value.integer.value[3] = tmp;
 311         return 0;
 312 }
 313
 314 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 315 {
 316         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 317         uinfo->count = AK4114_REG_QSUB_SIZE;
 318         return 0;
 319 }
 320
 321 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
 322                                  struct snd_ctl_elem_value *ucontrol)
 323 {
 324         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 325         unsigned i;
 326
 327         for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
 328                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
 329         return 0;
 330 }
 331
 332 /* Don't forget to change AK4114_CONTROLS define!!! */
 333 static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
 334 {
 335         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 336         .name =         "IEC958 Parity Errors",
 337         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 338         .info =         snd_ak4114_in_error_info,
 339         .get =          snd_ak4114_in_error_get,
 340         .private_value = offsetof(struct ak4114, parity_errors),
 341 },
 342 {
 343         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 344         .name =         "IEC958 V-Bit 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, v_bit_errors),
 349 },
 350 {
 351         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 352         .name =         "IEC958 C-CRC 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, ccrc_errors),
 357 },
 358 {
 359         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 360         .name =         "IEC958 Q-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, qcrc_errors),
 365 },
 366 {
 367         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 368         .name =         "IEC958 External Rate",
 369         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 370         .info =         snd_ak4114_rate_info,
 371         .get =          snd_ak4114_rate_get,
 372 },
 373 {
 374         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 375         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
 376         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 377         .info =         snd_ak4114_spdif_mask_info,
 378         .get =          snd_ak4114_spdif_mask_get,
 379 },
 380 {
 381         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 382         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
 383         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 384         .info =         snd_ak4114_spdif_info,
 385         .get =          snd_ak4114_spdif_playback_get,
 386         .put =          snd_ak4114_spdif_playback_put,
 387 },
 388 {
 389         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 390         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
 391         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 392         .info =         snd_ak4114_spdif_mask_info,
 393         .get =          snd_ak4114_spdif_mask_get,
 394 },
 395 {
 396         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 397         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
 398         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 399         .info =         snd_ak4114_spdif_info,
 400         .get =          snd_ak4114_spdif_get,
 401 },
 402 {
 403         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 404         .name =         "IEC958 Preample Capture Default",
 405         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 406         .info =         snd_ak4114_spdif_pinfo,
 407         .get =          snd_ak4114_spdif_pget,
 408 },
 409 {
 410         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 411         .name =         "IEC958 Q-subcode Capture Default",
 412         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 413         .info =         snd_ak4114_spdif_qinfo,
 414         .get =          snd_ak4114_spdif_qget,
 415 },
 416 {
 417         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 418         .name =         "IEC958 Audio",
 419         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 420         .info =         snd_ak4114_in_bit_info,
 421         .get =          snd_ak4114_in_bit_get,
 422         .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
 423 },
 424 {
 425         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 426         .name =         "IEC958 Non-PCM Bitstream",
 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 = (6<<8) | AK4114_REG_RCS0,
 431 },
 432 {
 433         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 434         .name =         "IEC958 DTS 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 = (3<<8) | AK4114_REG_RCS0,
 439 },
 440 {
 441         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 442         .name =         "IEC958 PPL Lock Status",
 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 = (1<<31) | (4<<8) | AK4114_REG_RCS0,
 447 }
 448 };
 449
 450
 451 static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
 452                 struct snd_info_buffer *buffer)
 453 {
 454         struct ak4114 *ak4114 = entry->private_data;
 455         int reg, val;
 456         /* all ak4114 registers 0x00 - 0x1f */
 457         for (reg = 0; reg < 0x20; reg++) {
 458                 val = reg_read(ak4114, reg);
 459                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
 460         }
 461 }
 462
 463 static void snd_ak4114_proc_init(struct ak4114 *ak4114)
 464 {
 465         struct snd_info_entry *entry;
 466         if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
 467                 snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
 468 }
 469
 470 int snd_ak4114_build(struct ak4114 *ak4114,
 471                      struct snd_pcm_substream *ply_substream,
 472                      struct snd_pcm_substream *cap_substream)
 473 {
 474         struct snd_kcontrol *kctl;
 475         unsigned int idx;
 476         int err;
 477
 478         if (snd_BUG_ON(!cap_substream))
 479                 return -EINVAL;
 480         ak4114->playback_substream = ply_substream;
 481         ak4114->capture_substream = cap_substream;
 482         for (idx = 0; idx < AK4114_CONTROLS; idx++) {
 483                 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
 484                 if (kctl == NULL)
 485                         return -ENOMEM;
 486                 if (strstr(kctl->id.name, "Playback")) {
 487                         if (ply_substream == NULL) {
 488                                 snd_ctl_free_one(kctl);
 489                                 ak4114->kctls[idx] = NULL;
 490                                 continue;
 491                         }
 492                         kctl->id.device = ply_substream->pcm->device;
 493                         kctl->id.subdevice = ply_substream->number;
 494                 } else {
 495                         kctl->id.device = cap_substream->pcm->device;
 496                         kctl->id.subdevice = cap_substream->number;
 497                 }
 498                 err = snd_ctl_add(ak4114->card, kctl);
 499                 if (err < 0)
 500                         return err;
 501                 ak4114->kctls[idx] = kctl;
 502         }
 503         snd_ak4114_proc_init(ak4114);
 504         /* trigger workq */
 505         schedule_delayed_work(&ak4114->work, HZ / 10);
 506         return 0;
 507 }
 508
 509 /* notify kcontrols if any parameters are changed */
 510 static void ak4114_notify(struct ak4114 *ak4114,
 511                           unsigned char rcs0, unsigned char rcs1,
 512                           unsigned char c0, unsigned char c1)
 513 {
 514         if (!ak4114->kctls[0])
 515                 return;
 516
 517         if (rcs0 & AK4114_PAR)
 518                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 519                                &ak4114->kctls[0]->id);
 520         if (rcs0 & AK4114_V)
 521                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 522                                &ak4114->kctls[1]->id);
 523         if (rcs1 & AK4114_CCRC)
 524                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 525                                &ak4114->kctls[2]->id);
 526         if (rcs1 & AK4114_QCRC)
 527                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 528                                &ak4114->kctls[3]->id);
 529
 530         /* rate change */
 531         if (c1 & 0xf0)
 532                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 533                                &ak4114->kctls[4]->id);
 534
 535         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
 536                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 537                                &ak4114->kctls[9]->id);
 538         if (c0 & AK4114_QINT)
 539                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 540                                &ak4114->kctls[10]->id);
 541
 542         if (c0 & AK4114_AUDION)
 543                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 544                                &ak4114->kctls[11]->id);
 545         if (c0 & AK4114_AUTO)
 546                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 547                                &ak4114->kctls[12]->id);
 548         if (c0 & AK4114_DTSCD)
 549                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 550                                &ak4114->kctls[13]->id);
 551         if (c0 & AK4114_UNLCK)
 552                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 553                                &ak4114->kctls[14]->id);
 554 }
 555
 556 int snd_ak4114_external_rate(struct ak4114 *ak4114)
 557 {
 558         unsigned char rcs1;
 559
 560         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 561         return external_rate(rcs1);
 562 }
 563
 564 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
 565 {
 566         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
 567         unsigned long _flags;
 568         int res = 0;
 569         unsigned char rcs0, rcs1;
 570         unsigned char c0, c1;
 571
 572         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 573         if (flags & AK4114_CHECK_NO_STAT)
 574                 goto __rate;
 575         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
 576         spin_lock_irqsave(&ak4114->lock, _flags);
 577         if (rcs0 & AK4114_PAR)
 578                 ak4114->parity_errors++;
 579         if (rcs1 & AK4114_V)
 580                 ak4114->v_bit_errors++;
 581         if (rcs1 & AK4114_CCRC)
 582                 ak4114->ccrc_errors++;
 583         if (rcs1 & AK4114_QCRC)
 584                 ak4114->qcrc_errors++;
 585         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
 586                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
 587         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
 588         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
 589         ak4114->rcs1 = rcs1;
 590         spin_unlock_irqrestore(&ak4114->lock, _flags);
 591
 592         ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
 593         if (ak4114->change_callback && (c0 | c1) != 0)
 594                 ak4114->change_callback(ak4114, c0, c1);
 595
 596       __rate:
 597         /* compare rate */
 598         res = external_rate(rcs1);
 599         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 600                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
 601                 if (snd_pcm_running(ak4114->capture_substream)) {
 602                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
 603                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
 604                         res = 1;
 605                 }
 606                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
 607         }
 608         return res;
 609 }
 610
 611 static void ak4114_stats(struct work_struct *work)
 612 {
 613         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
 614
 615         if (!chip->init)
 616                 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
 617
 618         schedule_delayed_work(&chip->work, HZ / 10);
 619 }
 620
 621 EXPORT_SYMBOL(snd_ak4114_create);
 622 EXPORT_SYMBOL(snd_ak4114_reg_write);
 623 EXPORT_SYMBOL(snd_ak4114_reinit);
 624 EXPORT_SYMBOL(snd_ak4114_build);
 625 EXPORT_SYMBOL(snd_ak4114_external_rate);
 626 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);