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 <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@perex.cz>");
  33 MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
  34 MODULE_LICENSE("GPL");
  35
  36 #define AK4114_ADDR                     0x00 /* fixed address */
  37
  38 static void ak4114_stats(struct work_struct *work);
  39 static void ak4114_init_regs(struct ak4114 *chip);
  40
  41 static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
  42 {
  43         ak4114->write(ak4114->private_data, reg, val);
  44         if (reg <= AK4114_REG_INT1_MASK)
  45                 ak4114->regmap[reg] = val;
  46         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
  47                 ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
  48 }
  49
  50 static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
  51 {
  52         return ak4114->read(ak4114->private_data, reg);
  53 }
  54
  55 #if 0
  56 static void reg_dump(struct ak4114 *ak4114)
  57 {
  58         int i;
  59
  60         printk(KERN_DEBUG "AK4114 REG DUMP:\n");
  61         for (i = 0; i < 0x20; i++)
  62                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < sizeof(ak4114->regmap) ? ak4114->regmap[i] : 0);
  63 }
  64 #endif
  65
  66 static void snd_ak4114_free(struct ak4114 *chip)
  67 {
  68         chip->init = 1; /* don't schedule new work */
  69         mb();
  70         cancel_delayed_work(&chip->work);
  71         flush_scheduled_work();
  72         kfree(chip);
  73 }
  74
  75 static int snd_ak4114_dev_free(struct snd_device *device)
  76 {
  77         struct ak4114 *chip = device->device_data;
  78         snd_ak4114_free(chip);
  79         return 0;
  80 }
  81
  82 int snd_ak4114_create(struct snd_card *card,
  83                       ak4114_read_t *read, ak4114_write_t *write,
  84                       const unsigned char pgm[7], const unsigned char txcsb[5],
  85                       void *private_data, struct ak4114 **r_ak4114)
  86 {
  87         struct ak4114 *chip;
  88         int err = 0;
  89         unsigned char reg;
  90         static struct snd_device_ops ops = {
  91                 .dev_free =     snd_ak4114_dev_free,
  92         };
  93
  94         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
  95         if (chip == NULL)
  96                 return -ENOMEM;
  97         spin_lock_init(&chip->lock);
  98         chip->card = card;
  99         chip->read = read;
 100         chip->write = write;
 101         chip->private_data = private_data;
 102         INIT_DELAYED_WORK(&chip->work, ak4114_stats);
 103
 104         for (reg = 0; reg < 7; reg++)
 105                 chip->regmap[reg] = pgm[reg];
 106         for (reg = 0; reg < 5; reg++)
 107                 chip->txcsb[reg] = txcsb[reg];
 108
 109         ak4114_init_regs(chip);
 110
 111         chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
 112         chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
 113
 114         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
 115                 goto __fail;
 116
 117         if (r_ak4114)
 118                 *r_ak4114 = chip;
 119         return 0;
 120
 121       __fail:
 122         snd_ak4114_free(chip);
 123         return err < 0 ? err : -EIO;
 124 }
 125
 126 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
 127 {
 128         if (reg <= AK4114_REG_INT1_MASK)
 129                 reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
 130         else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
 131                 reg_write(chip, reg,
 132                           (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
 133 }
 134
 135 static void ak4114_init_regs(struct ak4114 *chip)
 136 {
 137         unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
 138
 139         /* bring the chip to reset state and powerdown state */
 140         reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
 141         udelay(200);
 142         /* release reset, but leave powerdown */
 143         reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
 144         udelay(200);
 145         for (reg = 1; reg < 7; reg++)
 146                 reg_write(chip, reg, chip->regmap[reg]);
 147         for (reg = 0; reg < 5; reg++)
 148                 reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
 149         /* release powerdown, everything is initialized now */
 150         reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
 151 }
 152
 153 void snd_ak4114_reinit(struct ak4114 *chip)
 154 {
 155         chip->init = 1;
 156         mb();
 157         flush_scheduled_work();
 158         ak4114_init_regs(chip);
 159         /* bring up statistics / event queing */
 160         chip->init = 0;
 161         if (chip->kctls[0])
 162                 schedule_delayed_work(&chip->work, HZ / 10);
 163 }
 164
 165 static unsigned int external_rate(unsigned char rcs1)
 166 {
 167         switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
 168         case AK4114_FS_32000HZ: return 32000;
 169         case AK4114_FS_44100HZ: return 44100;
 170         case AK4114_FS_48000HZ: return 48000;
 171         case AK4114_FS_88200HZ: return 88200;
 172         case AK4114_FS_96000HZ: return 96000;
 173         case AK4114_FS_176400HZ: return 176400;
 174         case AK4114_FS_192000HZ: return 192000;
 175         default:                return 0;
 176         }
 177 }
 178
 179 static int snd_ak4114_in_error_info(struct snd_kcontrol *kcontrol,
 180                                     struct snd_ctl_elem_info *uinfo)
 181 {
 182         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 183         uinfo->count = 1;
 184         uinfo->value.integer.min = 0;
 185         uinfo->value.integer.max = LONG_MAX;
 186         return 0;
 187 }
 188
 189 static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
 190                                    struct snd_ctl_elem_value *ucontrol)
 191 {
 192         struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
 193         long *ptr;
 194
 195         spin_lock_irq(&chip->lock);
 196         ptr = (long *)(((char *)chip) + kcontrol->private_value);
 197         ucontrol->value.integer.value[0] = *ptr;
 198         *ptr = 0;
 199         spin_unlock_irq(&chip->lock);
 200         return 0;
 201 }
 202
 203 #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 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         /* trigger workq */
 483         schedule_delayed_work(&ak4114->work, HZ / 10);
 484         return 0;
 485 }
 486
 487 /* notify kcontrols if any parameters are changed */
 488 static void ak4114_notify(struct ak4114 *ak4114,
 489                           unsigned char rcs0, unsigned char rcs1,
 490                           unsigned char c0, unsigned char c1)
 491 {
 492         if (!ak4114->kctls[0])
 493                 return;
 494
 495         if (rcs0 & AK4114_PAR)
 496                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 497                                &ak4114->kctls[0]->id);
 498         if (rcs0 & AK4114_V)
 499                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 500                                &ak4114->kctls[1]->id);
 501         if (rcs1 & AK4114_CCRC)
 502                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 503                                &ak4114->kctls[2]->id);
 504         if (rcs1 & AK4114_QCRC)
 505                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 506                                &ak4114->kctls[3]->id);
 507
 508         /* rate change */
 509         if (c1 & 0xf0)
 510                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 511                                &ak4114->kctls[4]->id);
 512
 513         if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
 514                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 515                                &ak4114->kctls[9]->id);
 516         if (c0 & AK4114_QINT)
 517                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 518                                &ak4114->kctls[10]->id);
 519
 520         if (c0 & AK4114_AUDION)
 521                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 522                                &ak4114->kctls[11]->id);
 523         if (c0 & AK4114_AUTO)
 524                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 525                                &ak4114->kctls[12]->id);
 526         if (c0 & AK4114_DTSCD)
 527                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 528                                &ak4114->kctls[13]->id);
 529         if (c0 & AK4114_UNLCK)
 530                 snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
 531                                &ak4114->kctls[14]->id);
 532 }
 533
 534 int snd_ak4114_external_rate(struct ak4114 *ak4114)
 535 {
 536         unsigned char rcs1;
 537
 538         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 539         return external_rate(rcs1);
 540 }
 541
 542 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
 543 {
 544         struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
 545         unsigned long _flags;
 546         int res = 0;
 547         unsigned char rcs0, rcs1;
 548         unsigned char c0, c1;
 549
 550         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
 551         if (flags & AK4114_CHECK_NO_STAT)
 552                 goto __rate;
 553         rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
 554         spin_lock_irqsave(&ak4114->lock, _flags);
 555         if (rcs0 & AK4114_PAR)
 556                 ak4114->parity_errors++;
 557         if (rcs1 & AK4114_V)
 558                 ak4114->v_bit_errors++;
 559         if (rcs1 & AK4114_CCRC)
 560                 ak4114->ccrc_errors++;
 561         if (rcs1 & AK4114_QCRC)
 562                 ak4114->qcrc_errors++;
 563         c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
 564                      (rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
 565         c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
 566         ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
 567         ak4114->rcs1 = rcs1;
 568         spin_unlock_irqrestore(&ak4114->lock, _flags);
 569
 570         ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
 571         if (ak4114->change_callback && (c0 | c1) != 0)
 572                 ak4114->change_callback(ak4114, c0, c1);
 573
 574       __rate:
 575         /* compare rate */
 576         res = external_rate(rcs1);
 577         if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 578                 snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
 579                 if (snd_pcm_running(ak4114->capture_substream)) {
 580                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
 581                         snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
 582                         res = 1;
 583                 }
 584                 snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
 585         }
 586         return res;
 587 }
 588
 589 static void ak4114_stats(struct work_struct *work)
 590 {
 591         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
 592
 593         if (!chip->init)
 594                 snd_ak4114_check_rate_and_errors(chip, 0);
 595
 596         schedule_delayed_work(&chip->work, HZ / 10);
 597 }
 598
 599 EXPORT_SYMBOL(snd_ak4114_create);
 600 EXPORT_SYMBOL(snd_ak4114_reg_write);
 601 EXPORT_SYMBOL(snd_ak4114_reinit);
 602 EXPORT_SYMBOL(snd_ak4114_build);
 603 EXPORT_SYMBOL(snd_ak4114_external_rate);
 604 EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);