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 < ARRAY_SIZE(ak4114->regmap) ? ak4114->regmap[i] : 0);
  64 }
  65 #endif
  66
  67 static void snd_ak4114_free(struct ak4114 *chip)
  68 {
  69         atomic_inc(&chip->wq_processing);       /* don't schedule new work */
  70         cancel_delayed_work_sync(&chip->work);
  71         kfree(chip);
  72 }
  73
  74 static int snd_ak4114_dev_free(struct snd_device *device)
  75 {
  76         struct ak4114 *chip = device->device_data;
  77         snd_ak4114_free(chip);
  78         return 0;
  79 }
  80
  81 int snd_ak4114_create(struct snd_card *card,
  82                       ak4114_read_t *read, ak4114_write_t *write,
  83                       const unsigned char pgm[6], const unsigned char txcsb[5],
  84                       void *private_data, struct ak4114 **r_ak4114)
  85 {
  86         struct ak4114 *chip;
  87         int err = 0;
  88         unsigned char reg;
  89         static struct snd_device_ops ops = {
  90                 .dev_free =     snd_ak4114_dev_free,
  91         };
  92
  93         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
  94         if (chip == NULL)
  95                 return -ENOMEM;
  96         spin_lock_init(&chip->lock);
  97         chip->card = card;
  98         chip->read = read;
  99         chip->write = write;
 100         chip->private_data = private_data;
 101         INIT_DELAYED_WORK(&chip->work, ak4114_stats);
 102         atomic_set(&chip->wq_processing, 0);
 103         mutex_init(&chip->reinit_mutex);
 104
 105         for (reg = 0; reg < 6; reg++)
 106                 chip->regmap[reg] = pgm[reg];
 107         for (reg = 0; reg < 5; reg++)
 108                 chip->txcsb[reg] = txcsb[reg];
 109
 110         ak4114_init_regs(chip);
 111
 112         chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
 113         chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
 114
 115         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
 116                 goto __fail;
 117
 118         if (r_ak4114)
 119                 *r_ak4114 = chip;
 120         return 0;
 121
 122       __fail:
 123         snd_ak4114_free(chip);
 124         return err;
 125 }
 126 EXPORT_SYMBOL(snd_ak4114_create);
 127
 128 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
 129 {
 130         if (reg <= AK4114_REG_INT1_MASK)
 131                 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
 132         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
 133                 reg_write(chip, reg,
 134                           (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
 135 }
 136 EXPORT_SYMBOL(snd_ak4114_reg_write);
 137
 138 static void ak4114_init_regs(struct ak4114 *chip)
 139 {
 140         unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
 141
 142         /* bring the chip to reset state and powerdown state */
 143         reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
 144         udelay(200);
 145         /* release reset, but leave powerdown */
 146         reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
 147         udelay(200);
 148         for (reg = 1; reg < 6; reg++)
 149                 reg_write(chip, reg, chip->regmap[reg]);
 150         for (reg = 0; reg < 5; reg++)
 151                 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
 152         /* release powerdown, everything is initialized now */
 153         reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
 154 }
 155
 156 void snd_ak4114_reinit(struct ak4114 *chip)
 157 {
 158         if (atomic_inc_return(&chip->wq_processing) == 1)
 159                 cancel_delayed_work_sync(&chip->work);
 160         mutex_lock(&chip->reinit_mutex);
 161         ak4114_init_regs(chip);
 162         mutex_unlock(&chip->reinit_mutex);
 163         /* bring up statistics / event queing */
 164         if (atomic_dec_and_test(&chip->wq_processing))
 165                 schedule_delayed_work(&chip->work, HZ / 10);
 166 }
 167 EXPORT_SYMBOL(snd_ak4114_reinit);
 168
 169 static unsigned int external_rate(unsigned char rcs1)
 170 {
 171         switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
 172         case AK4114_FS_32000HZ: return 32000;
 173         case AK4114_FS_44100HZ: return 44100;
 174         case AK4114_FS_48000HZ: return 48000;
 175         case AK4114_FS_88200HZ: return 88200;
 176         case AK4114_FS_96000HZ: return 96000;
 177         case AK4114_FS_176400HZ: return 176400;
 178         case AK4114_FS_192000HZ: return 192000;
 179         default:                return 0;
 180         }
 181 }
 182
 183 static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
 184                                     struct snd_ctl_elem_info *uinfo)
 185 {
 186         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 187         uinfo->count = 1;
 188         uinfo->value.integer.min = 0;
 189         uinfo->value.integer.max = LONG_MAX;
 190         return 0;
 191 }
 192
 193 static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
 194                                    struct snd_ctl_elem_value *ucontrol)
 195 {
 196         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 197
 198         spin_lock_irq(&chip->lock);
 199         ucontrol->value.integer.value[0] =
 200                 chip->errors[kcontrol->private_value];
 201         chip->errors[kcontrol->private_value] = 0;
 202         spin_unlock_irq(&chip->lock);
 203         return 0;
 204 }
 205
 206 #define snd_ak4114_in_bit_info          snd_ctl_boolean_mono_info
 207
 208 static int snd_ak4114_in_bit_get(struct snd_kcontrol *kcontrol,
 209                                  struct snd_ctl_elem_value *ucontrol)
 210 {
 211         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 212         unsigned char reg = kcontrol->private_value & 0xff;
 213         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
 214         unsigned char inv = (kcontrol->private_value >> 31) & 1;
 215
 216         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
 217         return 0;
 218 }
 219
 220 static int snd_ak4114_rate_info(struct snd_kcontrol *kcontrol,
 221                                 struct snd_ctl_elem_info *uinfo)
 222 {
 223         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 224         uinfo->count = 1;
 225         uinfo->value.integer.min = 0;
 226         uinfo->value.integer.max = 192000;
 227         return 0;
 228 }
 229
 230 static int snd_ak4114_rate_get(struct snd_kcontrol *kcontrol,
 231                                struct snd_ctl_elem_value *ucontrol)
 232 {
 233         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 234
 235         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
 236         return 0;
 237 }
 238
 239 static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 240 {
 241         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 242         uinfo->count = 1;
 243         return 0;
 244 }
 245
 246 static int snd_ak4114_spdif_get(struct snd_kcontrol *kcontrol,
 247                                 struct snd_ctl_elem_value *ucontrol)
 248 {
 249         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 250         unsigned i;
 251
 252         for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
 253                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
 254         return 0;
 255 }
 256
 257 static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
 258                                          struct snd_ctl_elem_value *ucontrol)
 259 {
 260         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 261         unsigned i;
 262
 263         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
 264                 ucontrol->value.iec958.status[i] = chip->txcsb[i];
 265         return 0;
 266 }
 267
 268 static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
 269                                          struct snd_ctl_elem_value *ucontrol)
 270 {
 271         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 272         unsigned i;
 273
 274         for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
 275                 reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
 276         return 0;
 277 }
 278
 279 static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 280 {
 281         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 282         uinfo->count = 1;
 283         return 0;
 284 }
 285
 286 static int snd_ak4114_spdif_mask_get(struct snd_kcontrol *kcontrol,
 287                                       struct snd_ctl_elem_value *ucontrol)
 288 {
 289         memset(ucontrol->value.iec958.status, 0xff, AK4114_REG_RXCSB_SIZE);
 290         return 0;
 291 }
 292
 293 static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 294 {
 295         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 296         uinfo->value.integer.min = 0;
 297         uinfo->value.integer.max = 0xffff;
 298         uinfo->count = 4;
 299         return 0;
 300 }
 301
 302 static int snd_ak4114_spdif_pget(struct snd_kcontrol *kcontrol,
 303                                  struct snd_ctl_elem_value *ucontrol)
 304 {
 305         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 306         unsigned short tmp;
 307
 308         ucontrol->value.integer.value[0] = 0xf8f2;
 309         ucontrol->value.integer.value[1] = 0x4e1f;
 310         tmp = reg_read(chip, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
 311         ucontrol->value.integer.value[2] = tmp;
 312         tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_REG_Pd1) << 8);
 313         ucontrol->value.integer.value[3] = tmp;
 314         return 0;
 315 }
 316
 317 static int snd_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 318 {
 319         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 320         uinfo->count = AK4114_REG_QSUB_SIZE;
 321         return 0;
 322 }
 323
 324 static int snd_ak4114_spdif_qget(struct snd_kcontrol *kcontrol,
 325                                  struct snd_ctl_elem_value *ucontrol)
 326 {
 327         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 328         unsigned i;
 329
 330         for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
 331                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
 332         return 0;
 333 }
 334
 335 /* Don't forget to change AK4114_CONTROLS define!!! */
 336 static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
 337 {
 338         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 339         .name =         "IEC958 Parity Errors",
 340         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 341         .info =         snd_ak4114_in_error_info,
 342         .get =          snd_ak4114_in_error_get,
 343         .private_value = AK4114_PARITY_ERRORS,
 344 },
 345 {
 346         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 347         .name =         "IEC958 V-Bit Errors",
 348         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 349         .info =         snd_ak4114_in_error_info,
 350         .get =          snd_ak4114_in_error_get,
 351         .private_value = AK4114_V_BIT_ERRORS,
 352 },
 353 {
 354         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 355         .name =         "IEC958 C-CRC Errors",
 356         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 357         .info =         snd_ak4114_in_error_info,
 358         .get =          snd_ak4114_in_error_get,
 359         .private_value = AK4114_CCRC_ERRORS,
 360 },
 361 {
 362         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 363         .name =         "IEC958 Q-CRC Errors",
 364         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 365         .info =         snd_ak4114_in_error_info,
 366         .get =          snd_ak4114_in_error_get,
 367         .private_value = AK4114_QCRC_ERRORS,
 368 },
 369 {
 370         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 371         .name =         "IEC958 External Rate",
 372         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 373         .info =         snd_ak4114_rate_info,
 374         .get =          snd_ak4114_rate_get,
 375 },
 376 {
 377         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 378         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,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("",PLAYBACK,DEFAULT),
 386         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 387         .info =         snd_ak4114_spdif_info,
 388         .get =          snd_ak4114_spdif_playback_get,
 389         .put =          snd_ak4114_spdif_playback_put,
 390 },
 391 {
 392         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 393         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
 394         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 395         .info =         snd_ak4114_spdif_mask_info,
 396         .get =          snd_ak4114_spdif_mask_get,
 397 },
 398 {
 399         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 400         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
 401         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 402         .info =         snd_ak4114_spdif_info,
 403         .get =          snd_ak4114_spdif_get,
 404 },
 405 {
 406         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 407         .name =         "IEC958 Preamble Capture Default",
 408         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 409         .info =         snd_ak4114_spdif_pinfo,
 410         .get =          snd_ak4114_spdif_pget,
 411 },
 412 {
 413         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 414         .name =         "IEC958 Q-subcode Capture Default",
 415         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 416         .info =         snd_ak4114_spdif_qinfo,
 417         .get =          snd_ak4114_spdif_qget,
 418 },
 419 {
 420         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 421         .name =         "IEC958 Audio",
 422         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 423         .info =         snd_ak4114_in_bit_info,
 424         .get =          snd_ak4114_in_bit_get,
 425         .private_value = (1<<31) | (1<<8) | AK4114_REG_RCS0,
 426 },
 427 {
 428         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 429         .name =         "IEC958 Non-PCM Bitstream",
 430         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 431         .info =         snd_ak4114_in_bit_info,
 432         .get =          snd_ak4114_in_bit_get,
 433         .private_value = (6<<8) | AK4114_REG_RCS0,
 434 },
 435 {
 436         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 437         .name =         "IEC958 DTS Bitstream",
 438         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 439         .info =         snd_ak4114_in_bit_info,
 440         .get =          snd_ak4114_in_bit_get,
 441         .private_value = (3<<8) | AK4114_REG_RCS0,
 442 },
 443 {
 444         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 445         .name =         "IEC958 PPL Lock Status",
 446         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 447         .info =         snd_ak4114_in_bit_info,
 448         .get =          snd_ak4114_in_bit_get,
 449         .private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0,
 450 }
 451 };
 452
 453
 454 static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
 455                 struct snd_info_buffer *buffer)
 456 {
 457         struct ak4114 *ak4114 = entry->private_data;
 458         int reg, val;
 459         /* all ak4114 registers 0x00 - 0x1f */
 460         for (reg = 0; reg < 0x20; reg++) {
 461                 val = reg_read(ak4114, reg);
 462                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
 463         }
 464 }
 465
 466 static void snd_ak4114_proc_init(struct ak4114 *ak4114)
 467 {
 468         struct snd_info_entry *entry;
 469         if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
 470                 snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
 471 }
 472
 473 int snd_ak4114_build(struct ak4114 *ak4114,
 474                      struct snd_pcm_substream *ply_substream,
 475                      struct snd_pcm_substream *cap_substream)
 476 {
 477         struct snd_kcontrol *kctl;
 478         unsigned int idx;
 479         int err;
 480
 481         if (snd_BUG_ON(!cap_substream))
 482                 return -EINVAL;
 483         ak4114->playback_substream = ply_substream;
 484         ak4114->capture_substream = cap_substream;
 485         for (idx = 0; idx < AK4114_CONTROLS; idx++) {
 486                 kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
 487                 if (kctl == NULL)
 488                         return -ENOMEM;
 489                 if (strstr(kctl->id.name, "Playback")) {
 490                         if (ply_substream == NULL) {
 491                                 snd_ctl_free_one(kctl);
 492                                 ak4114->kctls[idx] = NULL;
 493                                 continue;
 494                         }
 495                         kctl->id.device = ply_substream->pcm->device;
 496                         kctl->id.subdevice = ply_substream->number;
 497                 } else {
 498                         kctl->id.device = cap_substream->pcm->device;
 499                         kctl->id.subdevice = cap_substream->number;
 500                 }
 501                 err = snd_ctl_add(ak4114->card, kctl);
 502                 if (err < 0)
 503                         return err;
 504                 ak4114->kctls[idx] = kctl;
 505         }
 506         snd_ak4114_proc_init(ak4114);
 507         /* trigger workq */
 508         schedule_delayed_work(&ak4114->work, HZ / 10);
 509         return 0;
 510 }
 511 EXPORT_SYMBOL(snd_ak4114_build);
 512
 513 /* notify kcontrols if any parameters are changed */
 514 static void ak4114_notify(struct ak4114 *ak4114,
 515                           unsigned char rcs0, unsigned char rcs1,
 516                           unsigned char c0, unsigned char c1)
 517 {
 518         if (!ak4114->kctls[0])
 519                 return;
 520
 521         if (rcs0 & AK4114_PAR)
 522                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 523                                &ak4114->kctls[0]->id);
 524         if (rcs0 & AK4114_V)
 525                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 526                                &ak4114->kctls[1]->id);
 527         if (rcs1 & AK4114_CCRC)
 528                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 529                                &ak4114->kctls[2]->id);
 530         if (rcs1 & AK4114_QCRC)
 531                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 532                                &ak4114->kctls[3]->id);
 533
 534         /* rate change */
 535         if (c1 & 0xf0)
 536                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 537                                &ak4114->kctls[4]->id);
 538
 539         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
 540                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 541                                &ak4114->kctls[9]->id);
 542         if (c0 & AK4114_QINT)
 543                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 544                                &ak4114->kctls[10]->id);
 545
 546         if (c0 & AK4114_AUDION)
 547                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 548                                &ak4114->kctls[11]->id);
 549         if (c0 & AK4114_AUTO)
 550                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 551                                &ak4114->kctls[12]->id);
 552         if (c0 & AK4114_DTSCD)
 553                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 554                                &ak4114->kctls[13]->id);
 555         if (c0 & AK4114_UNLCK)
 556                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 557                                &ak4114->kctls[14]->id);
 558 }
 559
 560 int snd_ak4114_external_rate(struct ak4114 *ak4114)
 561 {
 562         unsigned char rcs1;
 563
 564         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 565         return external_rate(rcs1);
 566 }
 567 EXPORT_SYMBOL(snd_ak4114_external_rate);
 568
 569 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
 570 {
 571         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
 572         unsigned long _flags;
 573         int res = 0;
 574         unsigned char rcs0, rcs1;
 575         unsigned char c0, c1;
 576
 577         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 578         if (flags & AK4114_CHECK_NO_STAT)
 579                 goto __rate;
 580         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
 581         spin_lock_irqsave(&ak4114->lock, _flags);
 582         if (rcs0 & AK4114_PAR)
 583                 ak4114->errors[AK4114_PARITY_ERRORS]++;
 584         if (rcs1 & AK4114_V)
 585                 ak4114->errors[AK4114_V_BIT_ERRORS]++;
 586         if (rcs1 & AK4114_CCRC)
 587                 ak4114->errors[AK4114_CCRC_ERRORS]++;
 588         if (rcs1 & AK4114_QCRC)
 589                 ak4114->errors[AK4114_QCRC_ERRORS]++;
 590         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
 591                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
 592         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
 593         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
 594         ak4114->rcs1 = rcs1;
 595         spin_unlock_irqrestore(&ak4114->lock, _flags);
 596
 597         ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
 598         if (ak4114->change_callback && (c0 | c1) != 0)
 599                 ak4114->change_callback(ak4114, c0, c1);
 600
 601       __rate:
 602         /* compare rate */
 603         res = external_rate(rcs1);
 604         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 605                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
 606                 if (snd_pcm_running(ak4114->capture_substream)) {
 607                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
 608                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
 609                         res = 1;
 610                 }
 611                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
 612         }
 613         return res;
 614 }
 615 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
 616
 617 static void ak4114_stats(struct work_struct *work)
 618 {
 619         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
 620
 621         if (atomic_inc_return(&chip->wq_processing) == 1)
 622                 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
 623         if (atomic_dec_and_test(&chip->wq_processing))
 624                 schedule_delayed_work(&chip->work, HZ / 10);
 625 }
 626
 627 #ifdef CONFIG_PM
 628 void snd_ak4114_suspend(struct ak4114 *chip)
 629 {
 630         atomic_inc(&chip->wq_processing); /* don't schedule new work */
 631         cancel_delayed_work_sync(&chip->work);
 632 }
 633 EXPORT_SYMBOL(snd_ak4114_suspend);
 634
 635 void snd_ak4114_resume(struct ak4114 *chip)
 636 {
 637         atomic_dec(&chip->wq_processing);
 638         snd_ak4114_reinit(chip);
 639 }
 640 EXPORT_SYMBOL(snd_ak4114_resume);
 641 #endif