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