git.oblomov.eu Git - linux-2.6/blob - sound/i2c/other/ak4117.c

   1 /*
   2  *  Routines for control of the AK4117 via 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 <sound/core.h>
  26 #include <sound/control.h>
  27 #include <sound/pcm.h>
  28 #include <sound/ak4117.h>
  29 #include <sound/asoundef.h>
  30
  31 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  32 MODULE_DESCRIPTION("AK4117 IEC958 (S/PDIF) receiver by Asahi Kasei");
  33 MODULE_LICENSE("GPL");
  34
  35 #define AK4117_ADDR                     0x00 /* fixed address */
  36
  37 static void snd_ak4117_timer(unsigned long data);
  38
  39 static void reg_write(struct ak4117 *ak4117, unsigned char reg, unsigned char val)
  40 {
  41         ak4117->write(ak4117->private_data, reg, val);
  42         if (reg < sizeof(ak4117->regmap))
  43                 ak4117->regmap[reg] = val;
  44 }
  45
  46 static inline unsigned char reg_read(struct ak4117 *ak4117, unsigned char reg)
  47 {
  48         return ak4117->read(ak4117->private_data, reg);
  49 }
  50
  51 #if 0
  52 static void reg_dump(struct ak4117 *ak4117)
  53 {
  54         int i;
  55
  56         printk(KERN_DEBUG "AK4117 REG DUMP:\n");
  57         for (i = 0; i < 0x1b; i++)
  58                 printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4117, i), i < sizeof(ak4117->regmap) ? ak4117->regmap[i] : 0);
  59 }
  60 #endif
  61
  62 static void snd_ak4117_free(struct ak4117 *chip)
  63 {
  64         del_timer(&chip->timer);
  65         kfree(chip);
  66 }
  67
  68 static int snd_ak4117_dev_free(struct snd_device *device)
  69 {
  70         struct ak4117 *chip = device->device_data;
  71         snd_ak4117_free(chip);
  72         return 0;
  73 }
  74
  75 int snd_ak4117_create(struct snd_card *card, ak4117_read_t *read, ak4117_write_t *write,
  76                       const unsigned char pgm[5], void *private_data, struct ak4117 **r_ak4117)
  77 {
  78         struct ak4117 *chip;
  79         int err = 0;
  80         unsigned char reg;
  81         static struct snd_device_ops ops = {
  82                 .dev_free =     snd_ak4117_dev_free,
  83         };
  84
  85         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
  86         if (chip == NULL)
  87                 return -ENOMEM;
  88         spin_lock_init(&chip->lock);
  89         chip->card = card;
  90         chip->read = read;
  91         chip->write = write;
  92         chip->private_data = private_data;
  93         init_timer(&chip->timer);
  94         chip->timer.data = (unsigned long)chip;
  95         chip->timer.function = snd_ak4117_timer;
  96
  97         for (reg = 0; reg < 5; reg++)
  98                 chip->regmap[reg] = pgm[reg];
  99         snd_ak4117_reinit(chip);
 100
 101         chip->rcs0 = reg_read(chip, AK4117_REG_RCS0) & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
 102         chip->rcs1 = reg_read(chip, AK4117_REG_RCS1);
 103         chip->rcs2 = reg_read(chip, AK4117_REG_RCS2);
 104
 105         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
 106                 goto __fail;
 107
 108         if (r_ak4117)
 109                 *r_ak4117 = chip;
 110         return 0;
 111
 112       __fail:
 113         snd_ak4117_free(chip);
 114         return err < 0 ? err : -EIO;
 115 }
 116
 117 void snd_ak4117_reg_write(struct ak4117 *chip, unsigned char reg, unsigned char mask, unsigned char val)
 118 {
 119         if (reg >= 5)
 120                 return;
 121         reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
 122 }
 123
 124 void snd_ak4117_reinit(struct ak4117 *chip)
 125 {
 126         unsigned char old = chip->regmap[AK4117_REG_PWRDN], reg;
 127
 128         del_timer(&chip->timer);
 129         chip->init = 1;
 130         /* bring the chip to reset state and powerdown state */
 131         reg_write(chip, AK4117_REG_PWRDN, 0);
 132         udelay(200);
 133         /* release reset, but leave powerdown */
 134         reg_write(chip, AK4117_REG_PWRDN, (old | AK4117_RST) & ~AK4117_PWN);
 135         udelay(200);
 136         for (reg = 1; reg < 5; reg++)
 137                 reg_write(chip, reg, chip->regmap[reg]);
 138         /* release powerdown, everything is initialized now */
 139         reg_write(chip, AK4117_REG_PWRDN, old | AK4117_RST | AK4117_PWN);
 140         chip->init = 0;
 141         chip->timer.expires = 1 + jiffies;
 142         add_timer(&chip->timer);
 143 }
 144
 145 static unsigned int external_rate(unsigned char rcs1)
 146 {
 147         switch (rcs1 & (AK4117_FS0|AK4117_FS1|AK4117_FS2|AK4117_FS3)) {
 148         case AK4117_FS_32000HZ: return 32000;
 149         case AK4117_FS_44100HZ: return 44100;
 150         case AK4117_FS_48000HZ: return 48000;
 151         case AK4117_FS_88200HZ: return 88200;
 152         case AK4117_FS_96000HZ: return 96000;
 153         case AK4117_FS_176400HZ: return 176400;
 154         case AK4117_FS_192000HZ: return 192000;
 155         default:                return 0;
 156         }
 157 }
 158
 159 static int snd_ak4117_in_error_info(struct snd_kcontrol *kcontrol,
 160                                     struct snd_ctl_elem_info *uinfo)
 161 {
 162         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 163         uinfo->count = 1;
 164         uinfo->value.integer.min = 0;
 165         uinfo->value.integer.max = LONG_MAX;
 166         return 0;
 167 }
 168
 169 static int snd_ak4117_in_error_get(struct snd_kcontrol *kcontrol,
 170                                    struct snd_ctl_elem_value *ucontrol)
 171 {
 172         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 173         long *ptr;
 174
 175         spin_lock_irq(&chip->lock);
 176         ptr = (long *)(((char *)chip) + kcontrol->private_value);
 177         ucontrol->value.integer.value[0] = *ptr;
 178         *ptr = 0;
 179         spin_unlock_irq(&chip->lock);
 180         return 0;
 181 }
 182
 183 #define snd_ak4117_in_bit_info          snd_ctl_boolean_mono_info
 184
 185 static int snd_ak4117_in_bit_get(struct snd_kcontrol *kcontrol,
 186                                  struct snd_ctl_elem_value *ucontrol)
 187 {
 188         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 189         unsigned char reg = kcontrol->private_value & 0xff;
 190         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
 191         unsigned char inv = (kcontrol->private_value >> 31) & 1;
 192
 193         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
 194         return 0;
 195 }
 196
 197 static int snd_ak4117_rx_info(struct snd_kcontrol *kcontrol,
 198                               struct snd_ctl_elem_info *uinfo)
 199 {
 200         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 201         uinfo->count = 1;
 202         uinfo->value.integer.min = 0;
 203         uinfo->value.integer.max = 1;
 204         return 0;
 205 }
 206
 207 static int snd_ak4117_rx_get(struct snd_kcontrol *kcontrol,
 208                              struct snd_ctl_elem_value *ucontrol)
 209 {
 210         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 211
 212         ucontrol->value.integer.value[0] = (chip->regmap[AK4117_REG_IO] & AK4117_IPS) ? 1 : 0;
 213         return 0;
 214 }
 215
 216 static int snd_ak4117_rx_put(struct snd_kcontrol *kcontrol,
 217                              struct snd_ctl_elem_value *ucontrol)
 218 {
 219         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 220         int change;
 221         u8 old_val;
 222
 223         spin_lock_irq(&chip->lock);
 224         old_val = chip->regmap[AK4117_REG_IO];
 225         change = !!ucontrol->value.integer.value[0] != ((old_val & AK4117_IPS) ? 1 : 0);
 226         if (change)
 227                 reg_write(chip, AK4117_REG_IO, (old_val & ~AK4117_IPS) | (ucontrol->value.integer.value[0] ? AK4117_IPS : 0));
 228         spin_unlock_irq(&chip->lock);
 229         return change;
 230 }
 231
 232 static int snd_ak4117_rate_info(struct snd_kcontrol *kcontrol,
 233                                 struct snd_ctl_elem_info *uinfo)
 234 {
 235         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 236         uinfo->count = 1;
 237         uinfo->value.integer.min = 0;
 238         uinfo->value.integer.max = 192000;
 239         return 0;
 240 }
 241
 242 static int snd_ak4117_rate_get(struct snd_kcontrol *kcontrol,
 243                                struct snd_ctl_elem_value *ucontrol)
 244 {
 245         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 246
 247         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4117_REG_RCS1));
 248         return 0;
 249 }
 250
 251 static int snd_ak4117_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 252 {
 253         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 254         uinfo->count = 1;
 255         return 0;
 256 }
 257
 258 static int snd_ak4117_spdif_get(struct snd_kcontrol *kcontrol,
 259                                 struct snd_ctl_elem_value *ucontrol)
 260 {
 261         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 262         unsigned i;
 263
 264         for (i = 0; i < AK4117_REG_RXCSB_SIZE; i++)
 265                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4117_REG_RXCSB0 + i);
 266         return 0;
 267 }
 268
 269 static int snd_ak4117_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 270 {
 271         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 272         uinfo->count = 1;
 273         return 0;
 274 }
 275
 276 static int snd_ak4117_spdif_mask_get(struct snd_kcontrol *kcontrol,
 277                                       struct snd_ctl_elem_value *ucontrol)
 278 {
 279         memset(ucontrol->value.iec958.status, 0xff, AK4117_REG_RXCSB_SIZE);
 280         return 0;
 281 }
 282
 283 static int snd_ak4117_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 284 {
 285         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 286         uinfo->value.integer.min = 0;
 287         uinfo->value.integer.max = 0xffff;
 288         uinfo->count = 4;
 289         return 0;
 290 }
 291
 292 static int snd_ak4117_spdif_pget(struct snd_kcontrol *kcontrol,
 293                                  struct snd_ctl_elem_value *ucontrol)
 294 {
 295         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 296         unsigned short tmp;
 297
 298         ucontrol->value.integer.value[0] = 0xf8f2;
 299         ucontrol->value.integer.value[1] = 0x4e1f;
 300         tmp = reg_read(chip, AK4117_REG_Pc0) | (reg_read(chip, AK4117_REG_Pc1) << 8);
 301         ucontrol->value.integer.value[2] = tmp;
 302         tmp = reg_read(chip, AK4117_REG_Pd0) | (reg_read(chip, AK4117_REG_Pd1) << 8);
 303         ucontrol->value.integer.value[3] = tmp;
 304         return 0;
 305 }
 306
 307 static int snd_ak4117_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 308 {
 309         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 310         uinfo->count = AK4117_REG_QSUB_SIZE;
 311         return 0;
 312 }
 313
 314 static int snd_ak4117_spdif_qget(struct snd_kcontrol *kcontrol,
 315                                  struct snd_ctl_elem_value *ucontrol)
 316 {
 317         struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
 318         unsigned i;
 319
 320         for (i = 0; i < AK4117_REG_QSUB_SIZE; i++)
 321                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4117_REG_QSUB_ADDR + i);
 322         return 0;
 323 }
 324
 325 /* Don't forget to change AK4117_CONTROLS define!!! */
 326 static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
 327 {
 328         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 329         .name =         "IEC958 Parity Errors",
 330         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 331         .info =         snd_ak4117_in_error_info,
 332         .get =          snd_ak4117_in_error_get,
 333         .private_value = offsetof(struct ak4117, parity_errors),
 334 },
 335 {
 336         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 337         .name =         "IEC958 V-Bit Errors",
 338         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 339         .info =         snd_ak4117_in_error_info,
 340         .get =          snd_ak4117_in_error_get,
 341         .private_value = offsetof(struct ak4117, v_bit_errors),
 342 },
 343 {
 344         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 345         .name =         "IEC958 C-CRC Errors",
 346         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 347         .info =         snd_ak4117_in_error_info,
 348         .get =          snd_ak4117_in_error_get,
 349         .private_value = offsetof(struct ak4117, ccrc_errors),
 350 },
 351 {
 352         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 353         .name =         "IEC958 Q-CRC Errors",
 354         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 355         .info =         snd_ak4117_in_error_info,
 356         .get =          snd_ak4117_in_error_get,
 357         .private_value = offsetof(struct ak4117, qcrc_errors),
 358 },
 359 {
 360         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 361         .name =         "IEC958 External Rate",
 362         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 363         .info =         snd_ak4117_rate_info,
 364         .get =          snd_ak4117_rate_get,
 365 },
 366 {
 367         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 368         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
 369         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 370         .info =         snd_ak4117_spdif_mask_info,
 371         .get =          snd_ak4117_spdif_mask_get,
 372 },
 373 {
 374         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 375         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
 376         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 377         .info =         snd_ak4117_spdif_info,
 378         .get =          snd_ak4117_spdif_get,
 379 },
 380 {
 381         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 382         .name =         "IEC958 Preample Capture Default",
 383         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 384         .info =         snd_ak4117_spdif_pinfo,
 385         .get =          snd_ak4117_spdif_pget,
 386 },
 387 {
 388         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 389         .name =         "IEC958 Q-subcode Capture Default",
 390         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 391         .info =         snd_ak4117_spdif_qinfo,
 392         .get =          snd_ak4117_spdif_qget,
 393 },
 394 {
 395         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 396         .name =         "IEC958 Audio",
 397         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 398         .info =         snd_ak4117_in_bit_info,
 399         .get =          snd_ak4117_in_bit_get,
 400         .private_value = (1<<31) | (3<<8) | AK4117_REG_RCS0,
 401 },
 402 {
 403         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 404         .name =         "IEC958 Non-PCM Bitstream",
 405         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 406         .info =         snd_ak4117_in_bit_info,
 407         .get =          snd_ak4117_in_bit_get,
 408         .private_value = (5<<8) | AK4117_REG_RCS1,
 409 },
 410 {
 411         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 412         .name =         "IEC958 DTS Bitstream",
 413         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 414         .info =         snd_ak4117_in_bit_info,
 415         .get =          snd_ak4117_in_bit_get,
 416         .private_value = (6<<8) | AK4117_REG_RCS1,
 417 },
 418 {
 419         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 420         .name =         "AK4117 Input Select",
 421         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE,
 422         .info =         snd_ak4117_rx_info,
 423         .get =          snd_ak4117_rx_get,
 424         .put =          snd_ak4117_rx_put,
 425 }
 426 };
 427
 428 int snd_ak4117_build(struct ak4117 *ak4117, struct snd_pcm_substream *cap_substream)
 429 {
 430         struct snd_kcontrol *kctl;
 431         unsigned int idx;
 432         int err;
 433
 434         snd_assert(cap_substream, return -EINVAL);
 435         ak4117->substream = cap_substream;
 436         for (idx = 0; idx < AK4117_CONTROLS; idx++) {
 437                 kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
 438                 if (kctl == NULL)
 439                         return -ENOMEM;
 440                 kctl->id.device = cap_substream->pcm->device;
 441                 kctl->id.subdevice = cap_substream->number;
 442                 err = snd_ctl_add(ak4117->card, kctl);
 443                 if (err < 0)
 444                         return err;
 445                 ak4117->kctls[idx] = kctl;
 446         }
 447         return 0;
 448 }
 449
 450 int snd_ak4117_external_rate(struct ak4117 *ak4117)
 451 {
 452         unsigned char rcs1;
 453
 454         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
 455         return external_rate(rcs1);
 456 }
 457
 458 int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
 459 {
 460         struct snd_pcm_runtime *runtime = ak4117->substream ? ak4117->substream->runtime : NULL;
 461         unsigned long _flags;
 462         int res = 0;
 463         unsigned char rcs0, rcs1, rcs2;
 464         unsigned char c0, c1;
 465
 466         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
 467         if (flags & AK4117_CHECK_NO_STAT)
 468                 goto __rate;
 469         rcs0 = reg_read(ak4117, AK4117_REG_RCS0);
 470         rcs2 = reg_read(ak4117, AK4117_REG_RCS2);
 471         // printk(KERN_DEBUG "AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
 472         spin_lock_irqsave(&ak4117->lock, _flags);
 473         if (rcs0 & AK4117_PAR)
 474                 ak4117->parity_errors++;
 475         if (rcs0 & AK4117_V)
 476                 ak4117->v_bit_errors++;
 477         if (rcs2 & AK4117_CCRC)
 478                 ak4117->ccrc_errors++;
 479         if (rcs2 & AK4117_QCRC)
 480                 ak4117->qcrc_errors++;
 481         c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK)) ^
 482                      (rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK));
 483         c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^
 484                      (rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f));
 485         ak4117->rcs0 = rcs0 & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
 486         ak4117->rcs1 = rcs1;
 487         ak4117->rcs2 = rcs2;
 488         spin_unlock_irqrestore(&ak4117->lock, _flags);
 489
 490         if (rcs0 & AK4117_PAR)
 491                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[0]->id);
 492         if (rcs0 & AK4117_V)
 493                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[1]->id);
 494         if (rcs2 & AK4117_CCRC)
 495                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[2]->id);
 496         if (rcs2 & AK4117_QCRC)
 497                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[3]->id);
 498
 499         /* rate change */
 500         if (c1 & 0x0f)
 501                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[4]->id);
 502
 503         if ((c1 & AK4117_PEM) | (c0 & AK4117_CINT))
 504                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[6]->id);
 505         if (c0 & AK4117_QINT)
 506                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[8]->id);
 507
 508         if (c0 & AK4117_AUDION)
 509                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[9]->id);
 510         if (c1 & AK4117_NPCM)
 511                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[10]->id);
 512         if (c1 & AK4117_DTSCD)
 513                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[11]->id);
 514
 515         if (ak4117->change_callback && (c0 | c1) != 0)
 516                 ak4117->change_callback(ak4117, c0, c1);
 517
 518       __rate:
 519         /* compare rate */
 520         res = external_rate(rcs1);
 521         if (!(flags & AK4117_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 522                 snd_pcm_stream_lock_irqsave(ak4117->substream, _flags);
 523                 if (snd_pcm_running(ak4117->substream)) {
 524                         // printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
 525                         snd_pcm_stop(ak4117->substream, SNDRV_PCM_STATE_DRAINING);
 526                         wake_up(&runtime->sleep);
 527                         res = 1;
 528                 }
 529                 snd_pcm_stream_unlock_irqrestore(ak4117->substream, _flags);
 530         }
 531         return res;
 532 }
 533
 534 static void snd_ak4117_timer(unsigned long data)
 535 {
 536         struct ak4117 *chip = (struct ak4117 *)data;
 537
 538         if (chip->init)
 539                 return;
 540         snd_ak4117_check_rate_and_errors(chip, 0);
 541         chip->timer.expires = 1 + jiffies;
 542         add_timer(&chip->timer);
 543 }
 544
 545 EXPORT_SYMBOL(snd_ak4117_create);
 546 EXPORT_SYMBOL(snd_ak4117_reg_write);
 547 EXPORT_SYMBOL(snd_ak4117_reinit);
 548 EXPORT_SYMBOL(snd_ak4117_build);
 549 EXPORT_SYMBOL(snd_ak4117_external_rate);
 550 EXPORT_SYMBOL(snd_ak4117_check_rate_and_errors);