sound/i2c/other/ak4114.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Routines for control of the AK4114 via I2C and 4-wire serial interface
   4  *  IEC958 (S/PDIF) receiver by Asahi Kasei
   5  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   6  */
   7
   8 #include <linux/slab.h>
   9 #include <linux/delay.h>
  10 #include <linux/module.h>
  11 #include <sound/core.h>
  12 #include <sound/control.h>
  13 #include <sound/pcm.h>
  14 #include <sound/ak4114.h>
  15 #include <sound/asoundef.h>
  16 #include <sound/info.h>
  17
  18 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  19 MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
  20 MODULE_LICENSE("GPL");
  21
  22 #define AK4114_ADDR                     0x00 /* fixed address */
  23
  24 static void ak4114_stats(struct work_struct *work);
  25 static void ak4114_init_regs(struct ak4114 *chip);
  26
  27 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
  28 {
  29         ak4114->write(ak4114->private_data, reg, val);
  30         if (reg <= AK4114_REG_INT1_MASK)
  31                 ak4114->regmap[reg] = val;
  32         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
  33                 ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
  34 }
  35
  36 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
  37 {
  38         return ak4114->read(ak4114->private_data, reg);
  39 }
  40
  41 #if 0
  42 static void reg_dump(struct ak4114 *ak4114)
  43 {
  44         int i;
  45
  46         printk(KERN_DEBUG "AK4114 REG DUMP:\n");
  47         for (i = 0; i < 0x20; i++)
  48                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < ARRAY_SIZE(ak4114->regmap) ? ak4114->regmap[i] : 0);
  49 }
  50 #endif
  51
  52 static void snd_ak4114_free(struct ak4114 *chip)
  53 {
  54         atomic_inc(&chip->wq_processing);       /* don't schedule new work */
  55         cancel_delayed_work_sync(&chip->work);
  56         kfree(chip);
  57 }
  58
  59 static int snd_ak4114_dev_free(struct snd_device *device)
  60 {
  61         struct ak4114 *chip = device->device_data;
  62         snd_ak4114_free(chip);
  63         return 0;
  64 }
  65
  66 int snd_ak4114_create(struct snd_card *card,
  67                       ak4114_read_t *read, ak4114_write_t *write,
  68                       const unsigned char pgm[6], const unsigned char txcsb[5],
  69                       void *private_data, struct ak4114 **r_ak4114)
  70 {
  71         struct ak4114 *chip;
  72         int err = 0;
  73         unsigned char reg;
  74         static const struct snd_device_ops ops = {
  75                 .dev_free =     snd_ak4114_dev_free,
  76         };
  77
  78         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
  79         if (chip == NULL)
  80                 return -ENOMEM;
  81         spin_lock_init(&chip->lock);
  82         chip->card = card;
  83         chip->read = read;
  84         chip->write = write;
  85         chip->private_data = private_data;
  86         INIT_DELAYED_WORK(&chip->work, ak4114_stats);
  87         atomic_set(&chip->wq_processing, 0);
  88         mutex_init(&chip->reinit_mutex);
  89
  90         for (reg = 0; reg < 6; reg++)
  91                 chip->regmap[reg] = pgm[reg];
  92         for (reg = 0; reg < 5; reg++)
  93                 chip->txcsb[reg] = txcsb[reg];
  94
  95         ak4114_init_regs(chip);
  96
  97         chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
  98         chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
  99
 100         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
 101                 goto __fail;
 102
 103         if (r_ak4114)
 104                 *r_ak4114 = chip;
 105         return 0;
 106
 107       __fail:
 108         snd_ak4114_free(chip);
 109         return err;
 110 }
 111 EXPORT_SYMBOL(snd_ak4114_create);
 112
 113 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
 114 {
 115         if (reg <= AK4114_REG_INT1_MASK)
 116                 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
 117         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
 118                 reg_write(chip, reg,
 119                           (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
 120 }
 121 EXPORT_SYMBOL(snd_ak4114_reg_write);
 122
 123 static void ak4114_init_regs(struct ak4114 *chip)
 124 {
 125         unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
 126
 127         /* bring the chip to reset state and powerdown state */
 128         reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
 129         udelay(200);
 130         /* release reset, but leave powerdown */
 131         reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
 132         udelay(200);
 133         for (reg = 1; reg < 6; reg++)
 134                 reg_write(chip, reg, chip->regmap[reg]);
 135         for (reg = 0; reg < 5; reg++)
 136                 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
 137         /* release powerdown, everything is initialized now */
 138         reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
 139 }
 140
 141 void snd_ak4114_reinit(struct ak4114 *chip)
 142 {
 143         if (atomic_inc_return(&chip->wq_processing) == 1)
 144                 cancel_delayed_work_sync(&chip->work);
 145         mutex_lock(&chip->reinit_mutex);
 146         ak4114_init_regs(chip);
 147         mutex_unlock(&chip->reinit_mutex);
 148         /* bring up statistics / event queing */
 149         if (atomic_dec_and_test(&chip->wq_processing))
 150                 schedule_delayed_work(&chip->work, HZ / 10);
 151 }
 152 EXPORT_SYMBOL(snd_ak4114_reinit);
 153
 154 static unsigned int external_rate(unsigned char rcs1)
 155 {
 156         switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
 157         case AK4114_FS_32000HZ: return 32000;
 158         case AK4114_FS_44100HZ: return 44100;
 159         case AK4114_FS_48000HZ: return 48000;
 160         case AK4114_FS_88200HZ: return 88200;
 161         case AK4114_FS_96000HZ: return 96000;
 162         case AK4114_FS_176400HZ: return 176400;
 163         case AK4114_FS_192000HZ: return 192000;
 164         default:                return 0;
 165         }
 166 }
 167
 168 static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
 169                                     struct snd_ctl_elem_info *uinfo)
 170 {
 171         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 172         uinfo->count = 1;
 173         uinfo->value.integer.min = 0;
 174         uinfo->value.integer.max = LONG_MAX;
 175         return 0;
 176 }
 177
 178 static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
 179                                    struct snd_ctl_elem_value *ucontrol)
 180 {
 181         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 182
 183         spin_lock_irq(&chip->lock);
 184         ucontrol->value.integer.value[0] =
 185                 chip->errors[kcontrol->private_value];
 186         chip->errors[kcontrol->private_value] = 0;
 187         spin_unlock_irq(&chip->lock);
 188         return 0;
 189 }
 190
 191 #define snd_ak4114_in_bit_info          snd_ctl_boolean_mono_info
 192
 193 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
 194                                  struct snd_ctl_elem_value *ucontrol)
 195 {
 196         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 197         unsigned char reg = kcontrol->private_value & 0xff;
 198         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
 199         unsigned char inv = (kcontrol->private_value >> 31) & 1;
 200
 201         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
 202         return 0;
 203 }
 204
 205 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
 206                                 struct snd_ctl_elem_info *uinfo)
 207 {
 208         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 209         uinfo->count = 1;
 210         uinfo->value.integer.min = 0;
 211         uinfo->value.integer.max = 192000;
 212         return 0;
 213 }
 214
 215 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
 216                                struct snd_ctl_elem_value *ucontrol)
 217 {
 218         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 219
 220         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
 221         return 0;
 222 }
 223
 224 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 225 {
 226         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 227         uinfo->count = 1;
 228         return 0;
 229 }
 230
 231 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
 232                                 struct snd_ctl_elem_value *ucontrol)
 233 {
 234         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 235         unsigned i;
 236
 237         for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
 238                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
 239         return 0;
 240 }
 241
 242 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
 243                                          struct snd_ctl_elem_value *ucontrol)
 244 {
 245         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 246         unsigned i;
 247
 248         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
 249                 ucontrol->value.iec958.status[i] = chip->txcsb[i];
 250         return 0;
 251 }
 252
 253 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
 254                                          struct snd_ctl_elem_value *ucontrol)
 255 {
 256         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 257         unsigned i;
 258
 259         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
 260                 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
 261         return 0;
 262 }
 263
 264 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 265 {
 266         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 267         uinfo->count = 1;
 268         return 0;
 269 }
 270
 271 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
 272                                       struct snd_ctl_elem_value *ucontrol)
 273 {
 274         memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
 275         return 0;
 276 }
 277
 278 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 279 {
 280         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 281         uinfo->value.integer.min = 0;
 282         uinfo->value.integer.max = 0xffff;
 283         uinfo->count = 4;
 284         return 0;
 285 }
 286
 287 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
 288                                  struct snd_ctl_elem_value *ucontrol)
 289 {
 290         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 291         unsigned short tmp;
 292
 293         ucontrol->value.integer.value[0] = 0xf8f2;
 294         ucontrol->value.integer.value[1] = 0x4e1f;
 295         tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
 296         ucontrol->value.integer.value[2] = tmp;
 297         tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
 298         ucontrol->value.integer.value[3] = tmp;
 299         return 0;
 300 }
 301
 302 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 303 {
 304         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 305         uinfo->count = AK4114_REG_QSUB_SIZE;
 306         return 0;
 307 }
 308
 309 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
 310                                  struct snd_ctl_elem_value *ucontrol)
 311 {
 312         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 313         unsigned i;
 314
 315         for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
 316                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
 317         return 0;
 318 }
 319
 320 /* Don't forget to change AK4114_CONTROLS define!!! */
 321 static const struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
 322 {
 323         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 324         .name =         "IEC958 Parity Errors",
 325         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 326         .info =         snd_ak4114_in_error_info,
 327         .get =          snd_ak4114_in_error_get,
 328         .private_value = AK4114_PARITY_ERRORS,
 329 },
 330 {
 331         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 332         .name =         "IEC958 V-Bit Errors",
 333         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 334         .info =         snd_ak4114_in_error_info,
 335         .get =          snd_ak4114_in_error_get,
 336         .private_value = AK4114_V_BIT_ERRORS,
 337 },
 338 {
 339         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 340         .name =         "IEC958 C-CRC Errors",
 341         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 342         .info =         snd_ak4114_in_error_info,
 343         .get =          snd_ak4114_in_error_get,
 344         .private_value = AK4114_CCRC_ERRORS,
 345 },
 346 {
 347         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 348         .name =         "IEC958 Q-CRC Errors",
 349         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 350         .info =         snd_ak4114_in_error_info,
 351         .get =          snd_ak4114_in_error_get,
 352         .private_value = AK4114_QCRC_ERRORS,
 353 },
 354 {
 355         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 356         .name =         "IEC958 External Rate",
 357         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 358         .info =         snd_ak4114_rate_info,
 359         .get =          snd_ak4114_rate_get,
 360 },
 361 {
 362         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 363         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
 364         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 365         .info =         snd_ak4114_spdif_mask_info,
 366         .get =          snd_ak4114_spdif_mask_get,
 367 },
 368 {
 369         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 370         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
 371         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 372         .info =         snd_ak4114_spdif_info,
 373         .get =          snd_ak4114_spdif_playback_get,
 374         .put =          snd_ak4114_spdif_playback_put,
 375 },
 376 {
 377         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 378         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
 379         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 380         .info =         snd_ak4114_spdif_mask_info,
 381         .get =          snd_ak4114_spdif_mask_get,
 382 },
 383 {
 384         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 385         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
 386         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 387         .info =         snd_ak4114_spdif_info,
 388         .get =          snd_ak4114_spdif_get,
 389 },
 390 {
 391         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 392         .name =         "IEC958 Preamble Capture Default",
 393         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 394         .info =         snd_ak4114_spdif_pinfo,
 395         .get =          snd_ak4114_spdif_pget,
 396 },
 397 {
 398         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 399         .name =         "IEC958 Q-subcode Capture Default",
 400         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 401         .info =         snd_ak4114_spdif_qinfo,
 402         .get =          snd_ak4114_spdif_qget,
 403 },
 404 {
 405         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 406         .name =         "IEC958 Audio",
 407         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 408         .info =         snd_ak4114_in_bit_info,
 409         .get =          snd_ak4114_in_bit_get,
 410         .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
 411 },
 412 {
 413         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 414         .name =         "IEC958 Non-PCM Bitstream",
 415         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 416         .info =         snd_ak4114_in_bit_info,
 417         .get =          snd_ak4114_in_bit_get,
 418         .private_value = (6<<8) | AK4114_REG_RCS0,
 419 },
 420 {
 421         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 422         .name =         "IEC958 DTS Bitstream",
 423         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 424         .info =         snd_ak4114_in_bit_info,
 425         .get =          snd_ak4114_in_bit_get,
 426         .private_value = (3<<8) | AK4114_REG_RCS0,
 427 },
 428 {
 429         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 430         .name =         "IEC958 PPL Lock Status",
 431         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 432         .info =         snd_ak4114_in_bit_info,
 433         .get =          snd_ak4114_in_bit_get,
 434         .private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0,
 435 }
 436 };
 437
 438
 439 static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
 440                 struct snd_info_buffer *buffer)
 441 {
 442         struct ak4114 *ak4114 = entry->private_data;
 443         int reg, val;
 444         /* all ak4114 registers 0x00 - 0x1f */
 445         for (reg = 0; reg < 0x20; reg++) {
 446                 val = reg_read(ak4114, reg);
 447                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
 448         }
 449 }
 450
 451 static void snd_ak4114_proc_init(struct ak4114 *ak4114)
 452 {
 453         snd_card_ro_proc_new(ak4114->card, "ak4114", ak4114,
 454                              snd_ak4114_proc_regs_read);
 455 }
 456
 457 int snd_ak4114_build(struct ak4114 *ak4114,
 458                      struct snd_pcm_substream *ply_substream,
 459                      struct snd_pcm_substream *cap_substream)
 460 {
 461         struct snd_kcontrol *kctl;
 462         unsigned int idx;
 463         int err;
 464
 465         if (snd_BUG_ON(!cap_substream))
 466                 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         snd_ak4114_proc_init(ak4114);
 491         /* trigger workq */
 492         schedule_delayed_work(&ak4114->work, HZ / 10);
 493         return 0;
 494 }
 495 EXPORT_SYMBOL(snd_ak4114_build);
 496
 497 /* notify kcontrols if any parameters are changed */
 498 static void ak4114_notify(struct ak4114 *ak4114,
 499                           unsigned char rcs0, unsigned char rcs1,
 500                           unsigned char c0, unsigned char c1)
 501 {
 502         if (!ak4114->kctls[0])
 503                 return;
 504
 505         if (rcs0 & AK4114_PAR)
 506                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 507                                &ak4114->kctls[0]->id);
 508         if (rcs0 & AK4114_V)
 509                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 510                                &ak4114->kctls[1]->id);
 511         if (rcs1 & AK4114_CCRC)
 512                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 513                                &ak4114->kctls[2]->id);
 514         if (rcs1 & AK4114_QCRC)
 515                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 516                                &ak4114->kctls[3]->id);
 517
 518         /* rate change */
 519         if (c1 & 0xf0)
 520                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 521                                &ak4114->kctls[4]->id);
 522
 523         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
 524                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 525                                &ak4114->kctls[9]->id);
 526         if (c0 & AK4114_QINT)
 527                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 528                                &ak4114->kctls[10]->id);
 529
 530         if (c0 & AK4114_AUDION)
 531                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 532                                &ak4114->kctls[11]->id);
 533         if (c0 & AK4114_AUTO)
 534                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 535                                &ak4114->kctls[12]->id);
 536         if (c0 & AK4114_DTSCD)
 537                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 538                                &ak4114->kctls[13]->id);
 539         if (c0 & AK4114_UNLCK)
 540                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 541                                &ak4114->kctls[14]->id);
 542 }
 543
 544 int snd_ak4114_external_rate(struct ak4114 *ak4114)
 545 {
 546         unsigned char rcs1;
 547
 548         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 549         return external_rate(rcs1);
 550 }
 551 EXPORT_SYMBOL(snd_ak4114_external_rate);
 552
 553 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
 554 {
 555         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
 556         unsigned long _flags;
 557         int res = 0;
 558         unsigned char rcs0, rcs1;
 559         unsigned char c0, c1;
 560
 561         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 562         if (flags & AK4114_CHECK_NO_STAT)
 563                 goto __rate;
 564         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
 565         spin_lock_irqsave(&ak4114->lock, _flags);
 566         if (rcs0 & AK4114_PAR)
 567                 ak4114->errors[AK4114_PARITY_ERRORS]++;
 568         if (rcs1 & AK4114_V)
 569                 ak4114->errors[AK4114_V_BIT_ERRORS]++;
 570         if (rcs1 & AK4114_CCRC)
 571                 ak4114->errors[AK4114_CCRC_ERRORS]++;
 572         if (rcs1 & AK4114_QCRC)
 573                 ak4114->errors[AK4114_QCRC_ERRORS]++;
 574         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
 575                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
 576         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
 577         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
 578         ak4114->rcs1 = rcs1;
 579         spin_unlock_irqrestore(&ak4114->lock, _flags);
 580
 581         ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
 582         if (ak4114->change_callback && (c0 | c1) != 0)
 583                 ak4114->change_callback(ak4114, c0, c1);
 584
 585       __rate:
 586         /* compare rate */
 587         res = external_rate(rcs1);
 588         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 589                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
 590                 if (snd_pcm_running(ak4114->capture_substream)) {
 591                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
 592                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
 593                         res = 1;
 594                 }
 595                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
 596         }
 597         return res;
 598 }
 599 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
 600
 601 static void ak4114_stats(struct work_struct *work)
 602 {
 603         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
 604
 605         if (atomic_inc_return(&chip->wq_processing) == 1)
 606                 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
 607         if (atomic_dec_and_test(&chip->wq_processing))
 608                 schedule_delayed_work(&chip->work, HZ / 10);
 609 }
 610
 611 #ifdef CONFIG_PM
 612 void snd_ak4114_suspend(struct ak4114 *chip)
 613 {
 614         atomic_inc(&chip->wq_processing); /* don't schedule new work */
 615         cancel_delayed_work_sync(&chip->work);
 616 }
 617 EXPORT_SYMBOL(snd_ak4114_suspend);
 618
 619 void snd_ak4114_resume(struct ak4114 *chip)
 620 {
 621         atomic_dec(&chip->wq_processing);
 622         snd_ak4114_reinit(chip);
 623 }
 624 EXPORT_SYMBOL(snd_ak4114_resume);
 625 #endif