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@suse.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/ak4117.h>
  30 #include <sound/asoundef.h>
  31
  32 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  33 MODULE_DESCRIPTION("AK4117 IEC958 (S/PDIF) receiver by Asahi Kasei");
  34 MODULE_LICENSE("GPL");
  35
  36 #define AK4117_ADDR                     0x00 /* fixed address */
  37
  38 static void snd_ak4117_timer(unsigned long data);
  39
  40 static void reg_write(ak4117_t *ak4117, unsigned char reg, unsigned char val)
  41 {
  42         ak4117->write(ak4117->private_data, reg, val);
  43         if (reg < sizeof(ak4117->regmap))
  44                 ak4117->regmap[reg] = val;
  45 }
  46
  47 static inline unsigned char reg_read(ak4117_t *ak4117, unsigned char reg)
  48 {
  49         return ak4117->read(ak4117->private_data, reg);
  50 }
  51
  52 #if 0
  53 static void reg_dump(ak4117_t *ak4117)
  54 {
  55         int i;
  56
  57         printk("AK4117 REG DUMP:\n");
  58         for (i = 0; i < 0x1b; i++)
  59                 printk("reg[%02x] = %02x (%02x)\n", i, reg_read(ak4117, i), i < sizeof(ak4117->regmap) ? ak4117->regmap[i] : 0);
  60 }
  61 #endif
  62
  63 static void snd_ak4117_free(ak4117_t *chip)
  64 {
  65         del_timer(&chip->timer);
  66         kfree(chip);
  67 }
  68
  69 static int snd_ak4117_dev_free(snd_device_t *device)
  70 {
  71         ak4117_t *chip = device->device_data;
  72         snd_ak4117_free(chip);
  73         return 0;
  74 }
  75
  76 int snd_ak4117_create(snd_card_t *card, ak4117_read_t *read, ak4117_write_t *write,
  77                       unsigned char pgm[5], void *private_data, ak4117_t **r_ak4117)
  78 {
  79         ak4117_t *chip;
  80         int err = 0;
  81         unsigned char reg;
  82         static snd_device_ops_t ops = {
  83                 .dev_free =     snd_ak4117_dev_free,
  84         };
  85
  86         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
  87         if (chip == NULL)
  88                 return -ENOMEM;
  89         spin_lock_init(&chip->lock);
  90         chip->card = card;
  91         chip->read = read;
  92         chip->write = write;
  93         chip->private_data = private_data;
  94         init_timer(&chip->timer);
  95         chip->timer.data = (unsigned long)chip;
  96         chip->timer.function = snd_ak4117_timer;
  97
  98         for (reg = 0; reg < 5; reg++)
  99                 chip->regmap[reg] = pgm[reg];
 100         snd_ak4117_reinit(chip);
 101
 102         chip->rcs0 = reg_read(chip, AK4117_REG_RCS0) & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
 103         chip->rcs1 = reg_read(chip, AK4117_REG_RCS1);
 104         chip->rcs2 = reg_read(chip, AK4117_REG_RCS2);
 105
 106         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
 107                 goto __fail;
 108
 109         if (r_ak4117)
 110                 *r_ak4117 = chip;
 111         return 0;
 112
 113       __fail:
 114         snd_ak4117_free(chip);
 115         return err < 0 ? err : -EIO;
 116 }
 117
 118 void snd_ak4117_reg_write(ak4117_t *chip, unsigned char reg, unsigned char mask, unsigned char val)
 119 {
 120         if (reg >= 5)
 121                 return;
 122         reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
 123 }
 124
 125 void snd_ak4117_reinit(ak4117_t *chip)
 126 {
 127         unsigned char old = chip->regmap[AK4117_REG_PWRDN], reg;
 128
 129         del_timer(&chip->timer);
 130         chip->init = 1;
 131         /* bring the chip to reset state and powerdown state */
 132         reg_write(chip, AK4117_REG_PWRDN, 0);
 133         udelay(200);
 134         /* release reset, but leave powerdown */
 135         reg_write(chip, AK4117_REG_PWRDN, (old | AK4117_RST) & ~AK4117_PWN);
 136         udelay(200);
 137         for (reg = 1; reg < 5; reg++)
 138                 reg_write(chip, reg, chip->regmap[reg]);
 139         /* release powerdown, everything is initialized now */
 140         reg_write(chip, AK4117_REG_PWRDN, old | AK4117_RST | AK4117_PWN);
 141         chip->init = 0;
 142         chip->timer.expires = 1 + jiffies;
 143         add_timer(&chip->timer);
 144 }
 145
 146 static unsigned int external_rate(unsigned char rcs1)
 147 {
 148         switch (rcs1 & (AK4117_FS0|AK4117_FS1|AK4117_FS2|AK4117_FS3)) {
 149         case AK4117_FS_32000HZ: return 32000;
 150         case AK4117_FS_44100HZ: return 44100;
 151         case AK4117_FS_48000HZ: return 48000;
 152         case AK4117_FS_88200HZ: return 88200;
 153         case AK4117_FS_96000HZ: return 96000;
 154         case AK4117_FS_176400HZ: return 176400;
 155         case AK4117_FS_192000HZ: return 192000;
 156         default:                return 0;
 157         }
 158 }
 159
 160 static int snd_ak4117_in_error_info(snd_kcontrol_t *kcontrol,
 161                                     snd_ctl_elem_info_t *uinfo)
 162 {
 163         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 164         uinfo->count = 1;
 165         uinfo->value.integer.min = 0;
 166         uinfo->value.integer.max = LONG_MAX;
 167         return 0;
 168 }
 169
 170 static int snd_ak4117_in_error_get(snd_kcontrol_t *kcontrol,
 171                                    snd_ctl_elem_value_t *ucontrol)
 172 {
 173         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 174         long *ptr;
 175
 176         spin_lock_irq(&chip->lock);
 177         ptr = (long *)(((char *)chip) + kcontrol->private_value);
 178         ucontrol->value.integer.value[0] = *ptr;
 179         *ptr = 0;
 180         spin_unlock_irq(&chip->lock);
 181         return 0;
 182 }
 183
 184 static int snd_ak4117_in_bit_info(snd_kcontrol_t *kcontrol,
 185                                   snd_ctl_elem_info_t *uinfo)
 186 {
 187         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 188         uinfo->count = 1;
 189         uinfo->value.integer.min = 0;
 190         uinfo->value.integer.max = 1;
 191         return 0;
 192 }
 193
 194 static int snd_ak4117_in_bit_get(snd_kcontrol_t *kcontrol,
 195                                  snd_ctl_elem_value_t *ucontrol)
 196 {
 197         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 198         unsigned char reg = kcontrol->private_value & 0xff;
 199         unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
 200         unsigned char inv = (kcontrol->private_value >> 31) & 1;
 201
 202         ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
 203         return 0;
 204 }
 205
 206 static int snd_ak4117_rx_info(snd_kcontrol_t *kcontrol,
 207                               snd_ctl_elem_info_t *uinfo)
 208 {
 209         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 210         uinfo->count = 1;
 211         uinfo->value.integer.min = 0;
 212         uinfo->value.integer.max = 1;
 213         return 0;
 214 }
 215
 216 static int snd_ak4117_rx_get(snd_kcontrol_t *kcontrol,
 217                              snd_ctl_elem_value_t *ucontrol)
 218 {
 219         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 220
 221         ucontrol->value.integer.value[0] = (chip->regmap[AK4117_REG_IO] & AK4117_IPS) ? 1 : 0;
 222         return 0;
 223 }
 224
 225 static int snd_ak4117_rx_put(snd_kcontrol_t *kcontrol,
 226                              snd_ctl_elem_value_t *ucontrol)
 227 {
 228         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 229         int change;
 230         u8 old_val;
 231
 232         spin_lock_irq(&chip->lock);
 233         old_val = chip->regmap[AK4117_REG_IO];
 234         change = !!ucontrol->value.integer.value[0] != ((old_val & AK4117_IPS) ? 1 : 0);
 235         if (change)
 236                 reg_write(chip, AK4117_REG_IO, (old_val & ~AK4117_IPS) | (ucontrol->value.integer.value[0] ? AK4117_IPS : 0));
 237         spin_unlock_irq(&chip->lock);
 238         return change;
 239 }
 240
 241 static int snd_ak4117_rate_info(snd_kcontrol_t *kcontrol,
 242                                 snd_ctl_elem_info_t *uinfo)
 243 {
 244         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 245         uinfo->count = 1;
 246         uinfo->value.integer.min = 0;
 247         uinfo->value.integer.max = 192000;
 248         return 0;
 249 }
 250
 251 static int snd_ak4117_rate_get(snd_kcontrol_t *kcontrol,
 252                                snd_ctl_elem_value_t *ucontrol)
 253 {
 254         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 255
 256         ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4117_REG_RCS1));
 257         return 0;
 258 }
 259
 260 static int snd_ak4117_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 261 {
 262         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 263         uinfo->count = 1;
 264         return 0;
 265 }
 266
 267 static int snd_ak4117_spdif_get(snd_kcontrol_t * kcontrol,
 268                                 snd_ctl_elem_value_t * ucontrol)
 269 {
 270         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 271         unsigned i;
 272
 273         for (i = 0; i < AK4117_REG_RXCSB_SIZE; i++)
 274                 ucontrol->value.iec958.status[i] = reg_read(chip, AK4117_REG_RXCSB0 + i);
 275         return 0;
 276 }
 277
 278 static int snd_ak4117_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 279 {
 280         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 281         uinfo->count = 1;
 282         return 0;
 283 }
 284
 285 static int snd_ak4117_spdif_mask_get(snd_kcontrol_t * kcontrol,
 286                                       snd_ctl_elem_value_t * ucontrol)
 287 {
 288         memset(ucontrol->value.iec958.status, 0xff, AK4117_REG_RXCSB_SIZE);
 289         return 0;
 290 }
 291
 292 static int snd_ak4117_spdif_pinfo(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 293 {
 294         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 295         uinfo->value.integer.min = 0;
 296         uinfo->value.integer.max = 0xffff;
 297         uinfo->count = 4;
 298         return 0;
 299 }
 300
 301 static int snd_ak4117_spdif_pget(snd_kcontrol_t * kcontrol,
 302                                  snd_ctl_elem_value_t * ucontrol)
 303 {
 304         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 305         unsigned short tmp;
 306
 307         ucontrol->value.integer.value[0] = 0xf8f2;
 308         ucontrol->value.integer.value[1] = 0x4e1f;
 309         tmp = reg_read(chip, AK4117_REG_Pc0) | (reg_read(chip, AK4117_REG_Pc1) << 8);
 310         ucontrol->value.integer.value[2] = tmp;
 311         tmp = reg_read(chip, AK4117_REG_Pd0) | (reg_read(chip, AK4117_REG_Pd1) << 8);
 312         ucontrol->value.integer.value[3] = tmp;
 313         return 0;
 314 }
 315
 316 static int snd_ak4117_spdif_qinfo(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 317 {
 318         uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
 319         uinfo->count = AK4117_REG_QSUB_SIZE;
 320         return 0;
 321 }
 322
 323 static int snd_ak4117_spdif_qget(snd_kcontrol_t * kcontrol,
 324                                  snd_ctl_elem_value_t * ucontrol)
 325 {
 326         ak4117_t *chip = snd_kcontrol_chip(kcontrol);
 327         unsigned i;
 328
 329         for (i = 0; i < AK4117_REG_QSUB_SIZE; i++)
 330                 ucontrol->value.bytes.data[i] = reg_read(chip, AK4117_REG_QSUB_ADDR + i);
 331         return 0;
 332 }
 333
 334 /* Don't forget to change AK4117_CONTROLS define!!! */
 335 static snd_kcontrol_new_t snd_ak4117_iec958_controls[] = {
 336 {
 337         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 338         .name =         "IEC958 Parity Errors",
 339         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 340         .info =         snd_ak4117_in_error_info,
 341         .get =          snd_ak4117_in_error_get,
 342         .private_value = offsetof(ak4117_t, parity_errors),
 343 },
 344 {
 345         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 346         .name =         "IEC958 V-Bit Errors",
 347         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 348         .info =         snd_ak4117_in_error_info,
 349         .get =          snd_ak4117_in_error_get,
 350         .private_value = offsetof(ak4117_t, v_bit_errors),
 351 },
 352 {
 353         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 354         .name =         "IEC958 C-CRC Errors",
 355         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 356         .info =         snd_ak4117_in_error_info,
 357         .get =          snd_ak4117_in_error_get,
 358         .private_value = offsetof(ak4117_t, ccrc_errors),
 359 },
 360 {
 361         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 362         .name =         "IEC958 Q-CRC Errors",
 363         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 364         .info =         snd_ak4117_in_error_info,
 365         .get =          snd_ak4117_in_error_get,
 366         .private_value = offsetof(ak4117_t, qcrc_errors),
 367 },
 368 {
 369         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 370         .name =         "IEC958 External Rate",
 371         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 372         .info =         snd_ak4117_rate_info,
 373         .get =          snd_ak4117_rate_get,
 374 },
 375 {
 376         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 377         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
 378         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 379         .info =         snd_ak4117_spdif_mask_info,
 380         .get =          snd_ak4117_spdif_mask_get,
 381 },
 382 {
 383         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 384         .name =         SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
 385         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 386         .info =         snd_ak4117_spdif_info,
 387         .get =          snd_ak4117_spdif_get,
 388 },
 389 {
 390         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 391         .name =         "IEC958 Preample Capture Default",
 392         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 393         .info =         snd_ak4117_spdif_pinfo,
 394         .get =          snd_ak4117_spdif_pget,
 395 },
 396 {
 397         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 398         .name =         "IEC958 Q-subcode Capture Default",
 399         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 400         .info =         snd_ak4117_spdif_qinfo,
 401         .get =          snd_ak4117_spdif_qget,
 402 },
 403 {
 404         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 405         .name =         "IEC958 Audio",
 406         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 407         .info =         snd_ak4117_in_bit_info,
 408         .get =          snd_ak4117_in_bit_get,
 409         .private_value = (1<<31) | (3<<8) | AK4117_REG_RCS0,
 410 },
 411 {
 412         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 413         .name =         "IEC958 Non-PCM Bitstream",
 414         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 415         .info =         snd_ak4117_in_bit_info,
 416         .get =          snd_ak4117_in_bit_get,
 417         .private_value = (5<<8) | AK4117_REG_RCS1,
 418 },
 419 {
 420         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 421         .name =         "IEC958 DTS Bitstream",
 422         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 423         .info =         snd_ak4117_in_bit_info,
 424         .get =          snd_ak4117_in_bit_get,
 425         .private_value = (6<<8) | AK4117_REG_RCS1,
 426 },
 427 {
 428         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 429         .name =         "AK4117 Input Select",
 430         .access =       SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE,
 431         .info =         snd_ak4117_rx_info,
 432         .get =          snd_ak4117_rx_get,
 433         .put =          snd_ak4117_rx_put,
 434 }
 435 };
 436
 437 int snd_ak4117_build(ak4117_t *ak4117, snd_pcm_substream_t *cap_substream)
 438 {
 439         snd_kcontrol_t *kctl;
 440         unsigned int idx;
 441         int err;
 442
 443         snd_assert(cap_substream, return -EINVAL);
 444         ak4117->substream = cap_substream;
 445         for (idx = 0; idx < AK4117_CONTROLS; idx++) {
 446                 kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
 447                 if (kctl == NULL)
 448                         return -ENOMEM;
 449                 kctl->id.device = cap_substream->pcm->device;
 450                 kctl->id.subdevice = cap_substream->number;
 451                 err = snd_ctl_add(ak4117->card, kctl);
 452                 if (err < 0)
 453                         return err;
 454                 ak4117->kctls[idx] = kctl;
 455         }
 456         return 0;
 457 }
 458
 459 int snd_ak4117_external_rate(ak4117_t *ak4117)
 460 {
 461         unsigned char rcs1;
 462
 463         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
 464         return external_rate(rcs1);
 465 }
 466
 467 int snd_ak4117_check_rate_and_errors(ak4117_t *ak4117, unsigned int flags)
 468 {
 469         snd_pcm_runtime_t *runtime = ak4117->substream ? ak4117->substream->runtime : NULL;
 470         unsigned long _flags;
 471         int res = 0;
 472         unsigned char rcs0, rcs1, rcs2;
 473         unsigned char c0, c1;
 474
 475         rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
 476         if (flags & AK4117_CHECK_NO_STAT)
 477                 goto __rate;
 478         rcs0 = reg_read(ak4117, AK4117_REG_RCS0);
 479         rcs2 = reg_read(ak4117, AK4117_REG_RCS2);
 480         // printk("AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
 481         spin_lock_irqsave(&ak4117->lock, _flags);
 482         if (rcs0 & AK4117_PAR)
 483                 ak4117->parity_errors++;
 484         if (rcs0 & AK4117_V)
 485                 ak4117->v_bit_errors++;
 486         if (rcs2 & AK4117_CCRC)
 487                 ak4117->ccrc_errors++;
 488         if (rcs2 & AK4117_QCRC)
 489                 ak4117->qcrc_errors++;
 490         c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK)) ^
 491                      (rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK));
 492         c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^
 493                      (rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f));
 494         ak4117->rcs0 = rcs0 & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
 495         ak4117->rcs1 = rcs1;
 496         ak4117->rcs2 = rcs2;
 497         spin_unlock_irqrestore(&ak4117->lock, _flags);
 498
 499         if (rcs0 & AK4117_PAR)
 500                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[0]->id);
 501         if (rcs0 & AK4117_V)
 502                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[1]->id);
 503         if (rcs2 & AK4117_CCRC)
 504                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[2]->id);
 505         if (rcs2 & AK4117_QCRC)
 506                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[3]->id);
 507
 508         /* rate change */
 509         if (c1 & 0x0f)
 510                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[4]->id);
 511
 512         if ((c1 & AK4117_PEM) | (c0 & AK4117_CINT))
 513                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[6]->id);
 514         if (c0 & AK4117_QINT)
 515                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[8]->id);
 516
 517         if (c0 & AK4117_AUDION)
 518                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[9]->id);
 519         if (c1 & AK4117_NPCM)
 520                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[10]->id);
 521         if (c1 & AK4117_DTSCD)
 522                 snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[11]->id);
 523
 524         if (ak4117->change_callback && (c0 | c1) != 0)
 525                 ak4117->change_callback(ak4117, c0, c1);
 526
 527       __rate:
 528         /* compare rate */
 529         res = external_rate(rcs1);
 530         if (!(flags & AK4117_CHECK_NO_RATE) && runtime && runtime->rate != res) {
 531                 snd_pcm_stream_lock_irqsave(ak4117->substream, _flags);
 532                 if (snd_pcm_running(ak4117->substream)) {
 533                         // printk("rate changed (%i <- %i)\n", runtime->rate, res);
 534                         snd_pcm_stop(ak4117->substream, SNDRV_PCM_STATE_DRAINING);
 535                         wake_up(&runtime->sleep);
 536                         res = 1;
 537                 }
 538                 snd_pcm_stream_unlock_irqrestore(ak4117->substream, _flags);
 539         }
 540         return res;
 541 }
 542
 543 static void snd_ak4117_timer(unsigned long data)
 544 {
 545         ak4117_t *chip = (ak4117_t *)data;
 546
 547         if (chip->init)
 548                 return;
 549         snd_ak4117_check_rate_and_errors(chip, 0);
 550         chip->timer.expires = 1 + jiffies;
 551         add_timer(&chip->timer);
 552 }
 553
 554 EXPORT_SYMBOL(snd_ak4117_create);
 555 EXPORT_SYMBOL(snd_ak4117_reg_write);
 556 EXPORT_SYMBOL(snd_ak4117_reinit);
 557 EXPORT_SYMBOL(snd_ak4117_build);
 558 EXPORT_SYMBOL(snd_ak4117_external_rate);
 559 EXPORT_SYMBOL(snd_ak4117_check_rate_and_errors);