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