sound/pci/ak4531_codec.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   3  *  Universal routines for AK4531 codec
   4  *
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  *
  20  */
  21
  22 #include <linux/delay.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/mutex.h>
  26 #include <linux/module.h>
  27
  28 #include <sound/core.h>
  29 #include <sound/ak4531_codec.h>
  30 #include <sound/tlv.h>
  31
  32 /*
  33 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  34 MODULE_DESCRIPTION("Universal routines for AK4531 codec");
  35 MODULE_LICENSE("GPL");
  36 */
  37
  38 #ifdef CONFIG_PROC_FS
  39 static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531);
  40 #else
  41 #define snd_ak4531_proc_init(card,ak)
  42 #endif
  43
  44 /*
  45  *
  46  */
  47
  48 #if 0
  49
  50 static void snd_ak4531_dump(struct snd_ak4531 *ak4531)
  51 {
  52         int idx;
  53
  54         for (idx = 0; idx < 0x19; idx++)
  55                 printk(KERN_DEBUG "ak4531 0x%x: 0x%x\n",
  56                        idx, ak4531->regs[idx]);
  57 }
  58
  59 #endif
  60
  61 /*
  62  *
  63  */
  64
  65 #define AK4531_SINGLE(xname, xindex, reg, shift, mask, invert) \
  66 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  67   .info = snd_ak4531_info_single, \
  68   .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \
  69   .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22) }
  70 #define AK4531_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
  71 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  72   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
  73   .name = xname, .index = xindex, \
  74   .info = snd_ak4531_info_single, \
  75   .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \
  76   .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22), \
  77   .tlv = { .p = (xtlv) } }
  78
  79 static int snd_ak4531_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  80 {
  81         int mask = (kcontrol->private_value >> 24) & 0xff;
  82
  83         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
  84         uinfo->count = 1;
  85         uinfo->value.integer.min = 0;
  86         uinfo->value.integer.max = mask;
  87         return 0;
  88 }
  89
  90 static int snd_ak4531_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  91 {
  92         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
  93         int reg = kcontrol->private_value & 0xff;
  94         int shift = (kcontrol->private_value >> 16) & 0x07;
  95         int mask = (kcontrol->private_value >> 24) & 0xff;
  96         int invert = (kcontrol->private_value >> 22) & 1;
  97         int val;
  98
  99         mutex_lock(&ak4531->reg_mutex);
 100         val = (ak4531->regs[reg] >> shift) & mask;
 101         mutex_unlock(&ak4531->reg_mutex);
 102         if (invert) {
 103                 val = mask - val;
 104         }
 105         ucontrol->value.integer.value[0] = val;
 106         return 0;
 107 }
 108
 109 static int snd_ak4531_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 110 {
 111         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 112         int reg = kcontrol->private_value & 0xff;
 113         int shift = (kcontrol->private_value >> 16) & 0x07;
 114         int mask = (kcontrol->private_value >> 24) & 0xff;
 115         int invert = (kcontrol->private_value >> 22) & 1;
 116         int change;
 117         int val;
 118
 119         val = ucontrol->value.integer.value[0] & mask;
 120         if (invert) {
 121                 val = mask - val;
 122         }
 123         val <<= shift;
 124         mutex_lock(&ak4531->reg_mutex);
 125         val = (ak4531->regs[reg] & ~(mask << shift)) | val;
 126         change = val != ak4531->regs[reg];
 127         ak4531->write(ak4531, reg, ak4531->regs[reg] = val);
 128         mutex_unlock(&ak4531->reg_mutex);
 129         return change;
 130 }
 131
 132 #define AK4531_DOUBLE(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert) \
 133 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 134   .info = snd_ak4531_info_double, \
 135   .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
 136   .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22) }
 137 #define AK4531_DOUBLE_TLV(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert, xtlv) \
 138 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
 139   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
 140   .name = xname, .index = xindex, \
 141   .info = snd_ak4531_info_double, \
 142   .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
 143   .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22), \
 144   .tlv = { .p = (xtlv) } }
 145
 146 static int snd_ak4531_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 147 {
 148         int mask = (kcontrol->private_value >> 24) & 0xff;
 149
 150         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 151         uinfo->count = 2;
 152         uinfo->value.integer.min = 0;
 153         uinfo->value.integer.max = mask;
 154         return 0;
 155 }
 156
 157 static int snd_ak4531_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 158 {
 159         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 160         int left_reg = kcontrol->private_value & 0xff;
 161         int right_reg = (kcontrol->private_value >> 8) & 0xff;
 162         int left_shift = (kcontrol->private_value >> 16) & 0x07;
 163         int right_shift = (kcontrol->private_value >> 19) & 0x07;
 164         int mask = (kcontrol->private_value >> 24) & 0xff;
 165         int invert = (kcontrol->private_value >> 22) & 1;
 166         int left, right;
 167
 168         mutex_lock(&ak4531->reg_mutex);
 169         left = (ak4531->regs[left_reg] >> left_shift) & mask;
 170         right = (ak4531->regs[right_reg] >> right_shift) & mask;
 171         mutex_unlock(&ak4531->reg_mutex);
 172         if (invert) {
 173                 left = mask - left;
 174                 right = mask - right;
 175         }
 176         ucontrol->value.integer.value[0] = left;
 177         ucontrol->value.integer.value[1] = right;
 178         return 0;
 179 }
 180
 181 static int snd_ak4531_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 182 {
 183         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 184         int left_reg = kcontrol->private_value & 0xff;
 185         int right_reg = (kcontrol->private_value >> 8) & 0xff;
 186         int left_shift = (kcontrol->private_value >> 16) & 0x07;
 187         int right_shift = (kcontrol->private_value >> 19) & 0x07;
 188         int mask = (kcontrol->private_value >> 24) & 0xff;
 189         int invert = (kcontrol->private_value >> 22) & 1;
 190         int change;
 191         int left, right;
 192
 193         left = ucontrol->value.integer.value[0] & mask;
 194         right = ucontrol->value.integer.value[1] & mask;
 195         if (invert) {
 196                 left = mask - left;
 197                 right = mask - right;
 198         }
 199         left <<= left_shift;
 200         right <<= right_shift;
 201         mutex_lock(&ak4531->reg_mutex);
 202         if (left_reg == right_reg) {
 203                 left = (ak4531->regs[left_reg] & ~((mask << left_shift) | (mask << right_shift))) | left | right;
 204                 change = left != ak4531->regs[left_reg];
 205                 ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
 206         } else {
 207                 left = (ak4531->regs[left_reg] & ~(mask << left_shift)) | left;
 208                 right = (ak4531->regs[right_reg] & ~(mask << right_shift)) | right;
 209                 change = left != ak4531->regs[left_reg] || right != ak4531->regs[right_reg];
 210                 ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
 211                 ak4531->write(ak4531, right_reg, ak4531->regs[right_reg] = right);
 212         }
 213         mutex_unlock(&ak4531->reg_mutex);
 214         return change;
 215 }
 216
 217 #define AK4531_INPUT_SW(xname, xindex, reg1, reg2, left_shift, right_shift) \
 218 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 219   .info = snd_ak4531_info_input_sw, \
 220   .get = snd_ak4531_get_input_sw, .put = snd_ak4531_put_input_sw, \
 221   .private_value = reg1 | (reg2 << 8) | (left_shift << 16) | (right_shift << 24) }
 222
 223 static int snd_ak4531_info_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 224 {
 225         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 226         uinfo->count = 4;
 227         uinfo->value.integer.min = 0;
 228         uinfo->value.integer.max = 1;
 229         return 0;
 230 }
 231
 232 static int snd_ak4531_get_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 233 {
 234         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 235         int reg1 = kcontrol->private_value & 0xff;
 236         int reg2 = (kcontrol->private_value >> 8) & 0xff;
 237         int left_shift = (kcontrol->private_value >> 16) & 0x0f;
 238         int right_shift = (kcontrol->private_value >> 24) & 0x0f;
 239
 240         mutex_lock(&ak4531->reg_mutex);
 241         ucontrol->value.integer.value[0] = (ak4531->regs[reg1] >> left_shift) & 1;
 242         ucontrol->value.integer.value[1] = (ak4531->regs[reg2] >> left_shift) & 1;
 243         ucontrol->value.integer.value[2] = (ak4531->regs[reg1] >> right_shift) & 1;
 244         ucontrol->value.integer.value[3] = (ak4531->regs[reg2] >> right_shift) & 1;
 245         mutex_unlock(&ak4531->reg_mutex);
 246         return 0;
 247 }
 248
 249 static int snd_ak4531_put_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 250 {
 251         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 252         int reg1 = kcontrol->private_value & 0xff;
 253         int reg2 = (kcontrol->private_value >> 8) & 0xff;
 254         int left_shift = (kcontrol->private_value >> 16) & 0x0f;
 255         int right_shift = (kcontrol->private_value >> 24) & 0x0f;
 256         int change;
 257         int val1, val2;
 258
 259         mutex_lock(&ak4531->reg_mutex);
 260         val1 = ak4531->regs[reg1] & ~((1 << left_shift) | (1 << right_shift));
 261         val2 = ak4531->regs[reg2] & ~((1 << left_shift) | (1 << right_shift));
 262         val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift;
 263         val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift;
 264         val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift;
 265         val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift;
 266         change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2];
 267         ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1);
 268         ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2);
 269         mutex_unlock(&ak4531->reg_mutex);
 270         return change;
 271 }
 272
 273 static const DECLARE_TLV_DB_SCALE(db_scale_master, -6200, 200, 0);
 274 static const DECLARE_TLV_DB_SCALE(db_scale_mono, -2800, 400, 0);
 275 static const DECLARE_TLV_DB_SCALE(db_scale_input, -5000, 200, 0);
 276
 277 static struct snd_kcontrol_new snd_ak4531_controls[] __devinitdata = {
 278
 279 AK4531_DOUBLE_TLV("Master Playback Switch", 0,
 280                   AK4531_LMASTER, AK4531_RMASTER, 7, 7, 1, 1,
 281                   db_scale_master),
 282 AK4531_DOUBLE("Master Playback Volume", 0, AK4531_LMASTER, AK4531_RMASTER, 0, 0, 0x1f, 1),
 283
 284 AK4531_SINGLE_TLV("Master Mono Playback Switch", 0, AK4531_MONO_OUT, 7, 1, 1,
 285                   db_scale_mono),
 286 AK4531_SINGLE("Master Mono Playback Volume", 0, AK4531_MONO_OUT, 0, 0x07, 1),
 287
 288 AK4531_DOUBLE("PCM Switch", 0, AK4531_LVOICE, AK4531_RVOICE, 7, 7, 1, 1),
 289 AK4531_DOUBLE_TLV("PCM Volume", 0, AK4531_LVOICE, AK4531_RVOICE, 0, 0, 0x1f, 1,
 290                   db_scale_input),
 291 AK4531_DOUBLE("PCM Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 3, 2, 1, 0),
 292 AK4531_DOUBLE("PCM Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 2, 2, 1, 0),
 293
 294 AK4531_DOUBLE("PCM Switch", 1, AK4531_LFM, AK4531_RFM, 7, 7, 1, 1),
 295 AK4531_DOUBLE_TLV("PCM Volume", 1, AK4531_LFM, AK4531_RFM, 0, 0, 0x1f, 1,
 296                   db_scale_input),
 297 AK4531_DOUBLE("PCM Playback Switch", 1, AK4531_OUT_SW1, AK4531_OUT_SW1, 6, 5, 1, 0),
 298 AK4531_INPUT_SW("PCM Capture Route", 1, AK4531_LIN_SW1, AK4531_RIN_SW1, 6, 5),
 299
 300 AK4531_DOUBLE("CD Switch", 0, AK4531_LCD, AK4531_RCD, 7, 7, 1, 1),
 301 AK4531_DOUBLE_TLV("CD Volume", 0, AK4531_LCD, AK4531_RCD, 0, 0, 0x1f, 1,
 302                   db_scale_input),
 303 AK4531_DOUBLE("CD Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 2, 1, 1, 0),
 304 AK4531_INPUT_SW("CD Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 2, 1),
 305
 306 AK4531_DOUBLE("Line Switch", 0, AK4531_LLINE, AK4531_RLINE, 7, 7, 1, 1),
 307 AK4531_DOUBLE_TLV("Line Volume", 0, AK4531_LLINE, AK4531_RLINE, 0, 0, 0x1f, 1,
 308                   db_scale_input),
 309 AK4531_DOUBLE("Line Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 4, 3, 1, 0),
 310 AK4531_INPUT_SW("Line Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 4, 3),
 311
 312 AK4531_DOUBLE("Aux Switch", 0, AK4531_LAUXA, AK4531_RAUXA, 7, 7, 1, 1),
 313 AK4531_DOUBLE_TLV("Aux Volume", 0, AK4531_LAUXA, AK4531_RAUXA, 0, 0, 0x1f, 1,
 314                   db_scale_input),
 315 AK4531_DOUBLE("Aux Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 5, 4, 1, 0),
 316 AK4531_INPUT_SW("Aux Capture Route", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 4, 3),
 317
 318 AK4531_SINGLE("Mono Switch", 0, AK4531_MONO1, 7, 1, 1),
 319 AK4531_SINGLE_TLV("Mono Volume", 0, AK4531_MONO1, 0, 0x1f, 1, db_scale_input),
 320 AK4531_SINGLE("Mono Playback Switch", 0, AK4531_OUT_SW2, 0, 1, 0),
 321 AK4531_DOUBLE("Mono Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 0, 0, 1, 0),
 322
 323 AK4531_SINGLE("Mono Switch", 1, AK4531_MONO2, 7, 1, 1),
 324 AK4531_SINGLE_TLV("Mono Volume", 1, AK4531_MONO2, 0, 0x1f, 1, db_scale_input),
 325 AK4531_SINGLE("Mono Playback Switch", 1, AK4531_OUT_SW2, 1, 1, 0),
 326 AK4531_DOUBLE("Mono Capture Switch", 1, AK4531_LIN_SW2, AK4531_RIN_SW2, 1, 1, 1, 0),
 327
 328 AK4531_SINGLE_TLV("Mic Volume", 0, AK4531_MIC, 0, 0x1f, 1, db_scale_input),
 329 AK4531_SINGLE("Mic Switch", 0, AK4531_MIC, 7, 1, 1),
 330 AK4531_SINGLE("Mic Playback Switch", 0, AK4531_OUT_SW1, 0, 1, 0),
 331 AK4531_DOUBLE("Mic Capture Switch", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 0, 0, 1, 0),
 332
 333 AK4531_DOUBLE("Mic Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 7, 7, 1, 0),
 334 AK4531_DOUBLE("Mono1 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 6, 6, 1, 0),
 335 AK4531_DOUBLE("Mono2 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 5, 5, 1, 0),
 336
 337 AK4531_SINGLE("AD Input Select", 0, AK4531_AD_IN, 0, 1, 0),
 338 AK4531_SINGLE("Mic Boost (+30dB)", 0, AK4531_MIC_GAIN, 0, 1, 0)
 339 };
 340
 341 static int snd_ak4531_free(struct snd_ak4531 *ak4531)
 342 {
 343         if (ak4531) {
 344                 if (ak4531->private_free)
 345                         ak4531->private_free(ak4531);
 346                 kfree(ak4531);
 347         }
 348         return 0;
 349 }
 350
 351 static int snd_ak4531_dev_free(struct snd_device *device)
 352 {
 353         struct snd_ak4531 *ak4531 = device->device_data;
 354         return snd_ak4531_free(ak4531);
 355 }
 356
 357 static u8 snd_ak4531_initial_map[0x19 + 1] = {
 358         0x9f,           /* 00: Master Volume Lch */
 359         0x9f,           /* 01: Master Volume Rch */
 360         0x9f,           /* 02: Voice Volume Lch */
 361         0x9f,           /* 03: Voice Volume Rch */
 362         0x9f,           /* 04: FM Volume Lch */
 363         0x9f,           /* 05: FM Volume Rch */
 364         0x9f,           /* 06: CD Audio Volume Lch */
 365         0x9f,           /* 07: CD Audio Volume Rch */
 366         0x9f,           /* 08: Line Volume Lch */
 367         0x9f,           /* 09: Line Volume Rch */
 368         0x9f,           /* 0a: Aux Volume Lch */
 369         0x9f,           /* 0b: Aux Volume Rch */
 370         0x9f,           /* 0c: Mono1 Volume */
 371         0x9f,           /* 0d: Mono2 Volume */
 372         0x9f,           /* 0e: Mic Volume */
 373         0x87,           /* 0f: Mono-out Volume */
 374         0x00,           /* 10: Output Mixer SW1 */
 375         0x00,           /* 11: Output Mixer SW2 */
 376         0x00,           /* 12: Lch Input Mixer SW1 */
 377         0x00,           /* 13: Rch Input Mixer SW1 */
 378         0x00,           /* 14: Lch Input Mixer SW2 */
 379         0x00,           /* 15: Rch Input Mixer SW2 */
 380         0x00,           /* 16: Reset & Power Down */
 381         0x00,           /* 17: Clock Select */
 382         0x00,           /* 18: AD Input Select */
 383         0x01            /* 19: Mic Amp Setup */
 384 };
 385
 386 int __devinit snd_ak4531_mixer(struct snd_card *card,
 387                                struct snd_ak4531 *_ak4531,
 388                                struct snd_ak4531 **rak4531)
 389 {
 390         unsigned int idx;
 391         int err;
 392         struct snd_ak4531 *ak4531;
 393         static struct snd_device_ops ops = {
 394                 .dev_free =     snd_ak4531_dev_free,
 395         };
 396
 397         if (snd_BUG_ON(!card || !_ak4531))
 398                 return -EINVAL;
 399         if (rak4531)
 400                 *rak4531 = NULL;
 401         ak4531 = kzalloc(sizeof(*ak4531), GFP_KERNEL);
 402         if (ak4531 == NULL)
 403                 return -ENOMEM;
 404         *ak4531 = *_ak4531;
 405         mutex_init(&ak4531->reg_mutex);
 406         if ((err = snd_component_add(card, "AK4531")) < 0) {
 407                 snd_ak4531_free(ak4531);
 408                 return err;
 409         }
 410         strcpy(card->mixername, "Asahi Kasei AK4531");
 411         ak4531->write(ak4531, AK4531_RESET, 0x03);      /* no RST, PD */
 412         udelay(100);
 413         ak4531->write(ak4531, AK4531_CLOCK, 0x00);      /* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */
 414         for (idx = 0; idx <= 0x19; idx++) {
 415                 if (idx == AK4531_RESET || idx == AK4531_CLOCK)
 416                         continue;
 417                 ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]);    /* recording source is mixer */
 418         }
 419         for (idx = 0; idx < ARRAY_SIZE(snd_ak4531_controls); idx++) {
 420                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ak4531_controls[idx], ak4531))) < 0) {
 421                         snd_ak4531_free(ak4531);
 422                         return err;
 423                 }
 424         }
 425         snd_ak4531_proc_init(card, ak4531);
 426         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, ak4531, &ops)) < 0) {
 427                 snd_ak4531_free(ak4531);
 428                 return err;
 429         }
 430
 431 #if 0
 432         snd_ak4531_dump(ak4531);
 433 #endif
 434         if (rak4531)
 435                 *rak4531 = ak4531;
 436         return 0;
 437 }
 438
 439 /*
 440  * power management
 441  */
 442 #ifdef CONFIG_PM
 443 void snd_ak4531_suspend(struct snd_ak4531 *ak4531)
 444 {
 445         /* mute */
 446         ak4531->write(ak4531, AK4531_LMASTER, 0x9f);
 447         ak4531->write(ak4531, AK4531_RMASTER, 0x9f);
 448         /* powerdown */
 449         ak4531->write(ak4531, AK4531_RESET, 0x01);
 450 }
 451
 452 void snd_ak4531_resume(struct snd_ak4531 *ak4531)
 453 {
 454         int idx;
 455
 456         /* initialize */
 457         ak4531->write(ak4531, AK4531_RESET, 0x03);
 458         udelay(100);
 459         ak4531->write(ak4531, AK4531_CLOCK, 0x00);
 460         /* restore mixer registers */
 461         for (idx = 0; idx <= 0x19; idx++) {
 462                 if (idx == AK4531_RESET || idx == AK4531_CLOCK)
 463                         continue;
 464                 ak4531->write(ak4531, idx, ak4531->regs[idx]);
 465         }
 466 }
 467 #endif
 468
 469 #ifdef CONFIG_PROC_FS
 470 /*
 471  * /proc interface
 472  */
 473
 474 static void snd_ak4531_proc_read(struct snd_info_entry *entry,
 475                                  struct snd_info_buffer *buffer)
 476 {
 477         struct snd_ak4531 *ak4531 = entry->private_data;
 478
 479         snd_iprintf(buffer, "Asahi Kasei AK4531\n\n");
 480         snd_iprintf(buffer, "Recording source   : %s\n"
 481                     "MIC gain           : %s\n",
 482                     ak4531->regs[AK4531_AD_IN] & 1 ? "external" : "mixer",
 483                     ak4531->regs[AK4531_MIC_GAIN] & 1 ? "+30dB" : "+0dB");
 484 }
 485
 486 static void __devinit
 487 snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531)
 488 {
 489         struct snd_info_entry *entry;
 490
 491         if (! snd_card_proc_new(card, "ak4531", &entry))
 492                 snd_info_set_text_ops(entry, ak4531, snd_ak4531_proc_read);
 493 }
 494 #endif