sound/pci/ac97/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 <sound/driver.h>
  23 #include <linux/delay.h>
  24 #include <linux/init.h>
  25 #include <linux/slab.h>
  26 #include <linux/mutex.h>
  27
  28 #include <sound/core.h>
  29 #include <sound/ak4531_codec.h>
  30 #include <sound/tlv.h>
  31
  32 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  33 MODULE_DESCRIPTION("Universal routines for AK4531 codec");
  34 MODULE_LICENSE("GPL");
  35
  36 #ifdef CONFIG_PROC_FS
  37 static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531);
  38 #else
  39 #define snd_ak4531_proc_init(card,ak)
  40 #endif
  41
  42 /*
  43  *
  44  */
  45
  46 #if 0
  47
  48 static void snd_ak4531_dump(struct snd_ak4531 *ak4531)
  49 {
  50         int idx;
  51
  52         for (idx = 0; idx < 0x19; idx++)
  53                 printk("ak4531 0x%x: 0x%x\n", idx, ak4531->regs[idx]);
  54 }
  55
  56 #endif
  57
  58 /*
  59  *
  60  */
  61
  62 #define AK4531_SINGLE(xname, xindex, reg, shift, mask, invert) \
  63 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  64   .info = snd_ak4531_info_single, \
  65   .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \
  66   .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22) }
  67 #define AK4531_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
  68 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  69   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
  70   .name = xname, .index = xindex, \
  71   .info = snd_ak4531_info_single, \
  72   .get = snd_ak4531_get_single, .put = snd_ak4531_put_single, \
  73   .private_value = reg | (shift << 16) | (mask << 24) | (invert << 22), \
  74   .tlv = { .p = (xtlv) } }
  75
  76 static int snd_ak4531_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
  77 {
  78         int mask = (kcontrol->private_value >> 24) & 0xff;
  79
  80         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
  81         uinfo->count = 1;
  82         uinfo->value.integer.min = 0;
  83         uinfo->value.integer.max = mask;
  84         return 0;
  85 }
  86
  87 static int snd_ak4531_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
  88 {
  89         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
  90         int reg = kcontrol->private_value & 0xff;
  91         int shift = (kcontrol->private_value >> 16) & 0x07;
  92         int mask = (kcontrol->private_value >> 24) & 0xff;
  93         int invert = (kcontrol->private_value >> 22) & 1;
  94         int val;
  95
  96         mutex_lock(&ak4531->reg_mutex);
  97         val = (ak4531->regs[reg] >> shift) & mask;
  98         mutex_unlock(&ak4531->reg_mutex);
  99         if (invert) {
 100                 val = mask - val;
 101         }
 102         ucontrol->value.integer.value[0] = val;
 103         return 0;
 104 }
 105
 106 static int snd_ak4531_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 107 {
 108         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 109         int reg = kcontrol->private_value & 0xff;
 110         int shift = (kcontrol->private_value >> 16) & 0x07;
 111         int mask = (kcontrol->private_value >> 24) & 0xff;
 112         int invert = (kcontrol->private_value >> 22) & 1;
 113         int change;
 114         int val;
 115
 116         val = ucontrol->value.integer.value[0] & mask;
 117         if (invert) {
 118                 val = mask - val;
 119         }
 120         val <<= shift;
 121         mutex_lock(&ak4531->reg_mutex);
 122         val = (ak4531->regs[reg] & ~(mask << shift)) | val;
 123         change = val != ak4531->regs[reg];
 124         ak4531->write(ak4531, reg, ak4531->regs[reg] = val);
 125         mutex_unlock(&ak4531->reg_mutex);
 126         return change;
 127 }
 128
 129 #define AK4531_DOUBLE(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert) \
 130 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 131   .info = snd_ak4531_info_double, \
 132   .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
 133   .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22) }
 134 #define AK4531_DOUBLE_TLV(xname, xindex, left_reg, right_reg, left_shift, right_shift, mask, invert, xtlv) \
 135 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
 136   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
 137   .name = xname, .index = xindex, \
 138   .info = snd_ak4531_info_double, \
 139   .get = snd_ak4531_get_double, .put = snd_ak4531_put_double, \
 140   .private_value = left_reg | (right_reg << 8) | (left_shift << 16) | (right_shift << 19) | (mask << 24) | (invert << 22), \
 141   .tlv = { .p = (xtlv) } }
 142
 143 static int snd_ak4531_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 144 {
 145         int mask = (kcontrol->private_value >> 24) & 0xff;
 146
 147         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 148         uinfo->count = 2;
 149         uinfo->value.integer.min = 0;
 150         uinfo->value.integer.max = mask;
 151         return 0;
 152 }
 153
 154 static int snd_ak4531_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 155 {
 156         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 157         int left_reg = kcontrol->private_value & 0xff;
 158         int right_reg = (kcontrol->private_value >> 8) & 0xff;
 159         int left_shift = (kcontrol->private_value >> 16) & 0x07;
 160         int right_shift = (kcontrol->private_value >> 19) & 0x07;
 161         int mask = (kcontrol->private_value >> 24) & 0xff;
 162         int invert = (kcontrol->private_value >> 22) & 1;
 163         int left, right;
 164
 165         mutex_lock(&ak4531->reg_mutex);
 166         left = (ak4531->regs[left_reg] >> left_shift) & mask;
 167         right = (ak4531->regs[right_reg] >> right_shift) & mask;
 168         mutex_unlock(&ak4531->reg_mutex);
 169         if (invert) {
 170                 left = mask - left;
 171                 right = mask - right;
 172         }
 173         ucontrol->value.integer.value[0] = left;
 174         ucontrol->value.integer.value[1] = right;
 175         return 0;
 176 }
 177
 178 static int snd_ak4531_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 179 {
 180         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 181         int left_reg = kcontrol->private_value & 0xff;
 182         int right_reg = (kcontrol->private_value >> 8) & 0xff;
 183         int left_shift = (kcontrol->private_value >> 16) & 0x07;
 184         int right_shift = (kcontrol->private_value >> 19) & 0x07;
 185         int mask = (kcontrol->private_value >> 24) & 0xff;
 186         int invert = (kcontrol->private_value >> 22) & 1;
 187         int change;
 188         int left, right;
 189
 190         left = ucontrol->value.integer.value[0] & mask;
 191         right = ucontrol->value.integer.value[1] & mask;
 192         if (invert) {
 193                 left = mask - left;
 194                 right = mask - right;
 195         }
 196         left <<= left_shift;
 197         right <<= right_shift;
 198         mutex_lock(&ak4531->reg_mutex);
 199         if (left_reg == right_reg) {
 200                 left = (ak4531->regs[left_reg] & ~((mask << left_shift) | (mask << right_shift))) | left | right;
 201                 change = left != ak4531->regs[left_reg];
 202                 ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
 203         } else {
 204                 left = (ak4531->regs[left_reg] & ~(mask << left_shift)) | left;
 205                 right = (ak4531->regs[right_reg] & ~(mask << right_shift)) | right;
 206                 change = left != ak4531->regs[left_reg] || right != ak4531->regs[right_reg];
 207                 ak4531->write(ak4531, left_reg, ak4531->regs[left_reg] = left);
 208                 ak4531->write(ak4531, right_reg, ak4531->regs[right_reg] = right);
 209         }
 210         mutex_unlock(&ak4531->reg_mutex);
 211         return change;
 212 }
 213
 214 #define AK4531_INPUT_SW(xname, xindex, reg1, reg2, left_shift, right_shift) \
 215 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 216   .info = snd_ak4531_info_input_sw, \
 217   .get = snd_ak4531_get_input_sw, .put = snd_ak4531_put_input_sw, \
 218   .private_value = reg1 | (reg2 << 8) | (left_shift << 16) | (right_shift << 24) }
 219
 220 static int snd_ak4531_info_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 221 {
 222         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 223         uinfo->count = 4;
 224         uinfo->value.integer.min = 0;
 225         uinfo->value.integer.max = 1;
 226         return 0;
 227 }
 228
 229 static int snd_ak4531_get_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 230 {
 231         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 232         int reg1 = kcontrol->private_value & 0xff;
 233         int reg2 = (kcontrol->private_value >> 8) & 0xff;
 234         int left_shift = (kcontrol->private_value >> 16) & 0x0f;
 235         int right_shift = (kcontrol->private_value >> 24) & 0x0f;
 236
 237         mutex_lock(&ak4531->reg_mutex);
 238         ucontrol->value.integer.value[0] = (ak4531->regs[reg1] >> left_shift) & 1;
 239         ucontrol->value.integer.value[1] = (ak4531->regs[reg2] >> left_shift) & 1;
 240         ucontrol->value.integer.value[2] = (ak4531->regs[reg1] >> right_shift) & 1;
 241         ucontrol->value.integer.value[3] = (ak4531->regs[reg2] >> right_shift) & 1;
 242         mutex_unlock(&ak4531->reg_mutex);
 243         return 0;
 244 }
 245
 246 static int snd_ak4531_put_input_sw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 247 {
 248         struct snd_ak4531 *ak4531 = snd_kcontrol_chip(kcontrol);
 249         int reg1 = kcontrol->private_value & 0xff;
 250         int reg2 = (kcontrol->private_value >> 8) & 0xff;
 251         int left_shift = (kcontrol->private_value >> 16) & 0x0f;
 252         int right_shift = (kcontrol->private_value >> 24) & 0x0f;
 253         int change;
 254         int val1, val2;
 255
 256         mutex_lock(&ak4531->reg_mutex);
 257         val1 = ak4531->regs[reg1] & ~((1 << left_shift) | (1 << right_shift));
 258         val2 = ak4531->regs[reg2] & ~((1 << left_shift) | (1 << right_shift));
 259         val1 |= (ucontrol->value.integer.value[0] & 1) << left_shift;
 260         val2 |= (ucontrol->value.integer.value[1] & 1) << left_shift;
 261         val1 |= (ucontrol->value.integer.value[2] & 1) << right_shift;
 262         val2 |= (ucontrol->value.integer.value[3] & 1) << right_shift;
 263         change = val1 != ak4531->regs[reg1] || val2 != ak4531->regs[reg2];
 264         ak4531->write(ak4531, reg1, ak4531->regs[reg1] = val1);
 265         ak4531->write(ak4531, reg2, ak4531->regs[reg2] = val2);
 266         mutex_unlock(&ak4531->reg_mutex);
 267         return change;
 268 }
 269
 270 static const DECLARE_TLV_DB_SCALE(db_scale_master, -6200, 200, 0);
 271 static const DECLARE_TLV_DB_SCALE(db_scale_mono, -2800, 400, 0);
 272 static const DECLARE_TLV_DB_SCALE(db_scale_input, -5000, 200, 0);
 273
 274 static struct snd_kcontrol_new snd_ak4531_controls[] = {
 275
 276 AK4531_DOUBLE_TLV("Master Playback Switch", 0,
 277                   AK4531_LMASTER, AK4531_RMASTER, 7, 7, 1, 1,
 278                   db_scale_master),
 279 AK4531_DOUBLE("Master Playback Volume", 0, AK4531_LMASTER, AK4531_RMASTER, 0, 0, 0x1f, 1),
 280
 281 AK4531_SINGLE_TLV("Master Mono Playback Switch", 0, AK4531_MONO_OUT, 7, 1, 1,
 282                   db_scale_mono),
 283 AK4531_SINGLE("Master Mono Playback Volume", 0, AK4531_MONO_OUT, 0, 0x07, 1),
 284
 285 AK4531_DOUBLE("PCM Switch", 0, AK4531_LVOICE, AK4531_RVOICE, 7, 7, 1, 1),
 286 AK4531_DOUBLE_TLV("PCM Volume", 0, AK4531_LVOICE, AK4531_RVOICE, 0, 0, 0x1f, 1,
 287                   db_scale_input),
 288 AK4531_DOUBLE("PCM Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 3, 2, 1, 0),
 289 AK4531_DOUBLE("PCM Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 2, 2, 1, 0),
 290
 291 AK4531_DOUBLE("PCM Switch", 1, AK4531_LFM, AK4531_RFM, 7, 7, 1, 1),
 292 AK4531_DOUBLE_TLV("PCM Volume", 1, AK4531_LFM, AK4531_RFM, 0, 0, 0x1f, 1,
 293                   db_scale_input),
 294 AK4531_DOUBLE("PCM Playback Switch", 1, AK4531_OUT_SW1, AK4531_OUT_SW1, 6, 5, 1, 0),
 295 AK4531_INPUT_SW("PCM Capture Route", 1, AK4531_LIN_SW1, AK4531_RIN_SW1, 6, 5),
 296
 297 AK4531_DOUBLE("CD Switch", 0, AK4531_LCD, AK4531_RCD, 7, 7, 1, 1),
 298 AK4531_DOUBLE_TLV("CD Volume", 0, AK4531_LCD, AK4531_RCD, 0, 0, 0x1f, 1,
 299                   db_scale_input),
 300 AK4531_DOUBLE("CD Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 2, 1, 1, 0),
 301 AK4531_INPUT_SW("CD Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 2, 1),
 302
 303 AK4531_DOUBLE("Line Switch", 0, AK4531_LLINE, AK4531_RLINE, 7, 7, 1, 1),
 304 AK4531_DOUBLE_TLV("Line Volume", 0, AK4531_LLINE, AK4531_RLINE, 0, 0, 0x1f, 1,
 305                   db_scale_input),
 306 AK4531_DOUBLE("Line Playback Switch", 0, AK4531_OUT_SW1, AK4531_OUT_SW1, 4, 3, 1, 0),
 307 AK4531_INPUT_SW("Line Capture Route", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 4, 3),
 308
 309 AK4531_DOUBLE("Aux Switch", 0, AK4531_LAUXA, AK4531_RAUXA, 7, 7, 1, 1),
 310 AK4531_DOUBLE_TLV("Aux Volume", 0, AK4531_LAUXA, AK4531_RAUXA, 0, 0, 0x1f, 1,
 311                   db_scale_input),
 312 AK4531_DOUBLE("Aux Playback Switch", 0, AK4531_OUT_SW2, AK4531_OUT_SW2, 5, 4, 1, 0),
 313 AK4531_INPUT_SW("Aux Capture Route", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 4, 3),
 314
 315 AK4531_SINGLE("Mono Switch", 0, AK4531_MONO1, 7, 1, 1),
 316 AK4531_SINGLE_TLV("Mono Volume", 0, AK4531_MONO1, 0, 0x1f, 1, db_scale_input),
 317 AK4531_SINGLE("Mono Playback Switch", 0, AK4531_OUT_SW2, 0, 1, 0),
 318 AK4531_DOUBLE("Mono Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 0, 0, 1, 0),
 319
 320 AK4531_SINGLE("Mono Switch", 1, AK4531_MONO2, 7, 1, 1),
 321 AK4531_SINGLE_TLV("Mono Volume", 1, AK4531_MONO2, 0, 0x1f, 1, db_scale_input),
 322 AK4531_SINGLE("Mono Playback Switch", 1, AK4531_OUT_SW2, 1, 1, 0),
 323 AK4531_DOUBLE("Mono Capture Switch", 1, AK4531_LIN_SW2, AK4531_RIN_SW2, 1, 1, 1, 0),
 324
 325 AK4531_SINGLE_TLV("Mic Volume", 0, AK4531_MIC, 0, 0x1f, 1, db_scale_input),
 326 AK4531_SINGLE("Mic Switch", 0, AK4531_MIC, 7, 1, 1),
 327 AK4531_SINGLE("Mic Playback Switch", 0, AK4531_OUT_SW1, 0, 1, 0),
 328 AK4531_DOUBLE("Mic Capture Switch", 0, AK4531_LIN_SW1, AK4531_RIN_SW1, 0, 0, 1, 0),
 329
 330 AK4531_DOUBLE("Mic Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 7, 7, 1, 0),
 331 AK4531_DOUBLE("Mono1 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 6, 6, 1, 0),
 332 AK4531_DOUBLE("Mono2 Bypass Capture Switch", 0, AK4531_LIN_SW2, AK4531_RIN_SW2, 5, 5, 1, 0),
 333
 334 AK4531_SINGLE("AD Input Select", 0, AK4531_AD_IN, 0, 1, 0),
 335 AK4531_SINGLE("Mic Boost (+30dB)", 0, AK4531_MIC_GAIN, 0, 1, 0)
 336 };
 337
 338 static int snd_ak4531_free(struct snd_ak4531 *ak4531)
 339 {
 340         if (ak4531) {
 341                 if (ak4531->private_free)
 342                         ak4531->private_free(ak4531);
 343                 kfree(ak4531);
 344         }
 345         return 0;
 346 }
 347
 348 static int snd_ak4531_dev_free(struct snd_device *device)
 349 {
 350         struct snd_ak4531 *ak4531 = device->device_data;
 351         return snd_ak4531_free(ak4531);
 352 }
 353
 354 static u8 snd_ak4531_initial_map[0x19 + 1] = {
 355         0x9f,           /* 00: Master Volume Lch */
 356         0x9f,           /* 01: Master Volume Rch */
 357         0x9f,           /* 02: Voice Volume Lch */
 358         0x9f,           /* 03: Voice Volume Rch */
 359         0x9f,           /* 04: FM Volume Lch */
 360         0x9f,           /* 05: FM Volume Rch */
 361         0x9f,           /* 06: CD Audio Volume Lch */
 362         0x9f,           /* 07: CD Audio Volume Rch */
 363         0x9f,           /* 08: Line Volume Lch */
 364         0x9f,           /* 09: Line Volume Rch */
 365         0x9f,           /* 0a: Aux Volume Lch */
 366         0x9f,           /* 0b: Aux Volume Rch */
 367         0x9f,           /* 0c: Mono1 Volume */
 368         0x9f,           /* 0d: Mono2 Volume */
 369         0x9f,           /* 0e: Mic Volume */
 370         0x87,           /* 0f: Mono-out Volume */
 371         0x00,           /* 10: Output Mixer SW1 */
 372         0x00,           /* 11: Output Mixer SW2 */
 373         0x00,           /* 12: Lch Input Mixer SW1 */
 374         0x00,           /* 13: Rch Input Mixer SW1 */
 375         0x00,           /* 14: Lch Input Mixer SW2 */
 376         0x00,           /* 15: Rch Input Mixer SW2 */
 377         0x00,           /* 16: Reset & Power Down */
 378         0x00,           /* 17: Clock Select */
 379         0x00,           /* 18: AD Input Select */
 380         0x01            /* 19: Mic Amp Setup */
 381 };
 382
 383 int snd_ak4531_mixer(struct snd_card *card, struct snd_ak4531 *_ak4531,
 384                      struct snd_ak4531 **rak4531)
 385 {
 386         unsigned int idx;
 387         int err;
 388         struct snd_ak4531 *ak4531;
 389         static struct snd_device_ops ops = {
 390                 .dev_free =     snd_ak4531_dev_free,
 391         };
 392
 393         snd_assert(rak4531 != NULL, return -EINVAL);
 394         *rak4531 = NULL;
 395         snd_assert(card != NULL && _ak4531 != NULL, return -EINVAL);
 396         ak4531 = kzalloc(sizeof(*ak4531), GFP_KERNEL);
 397         if (ak4531 == NULL)
 398                 return -ENOMEM;
 399         *ak4531 = *_ak4531;
 400         mutex_init(&ak4531->reg_mutex);
 401         if ((err = snd_component_add(card, "AK4531")) < 0) {
 402                 snd_ak4531_free(ak4531);
 403                 return err;
 404         }
 405         strcpy(card->mixername, "Asahi Kasei AK4531");
 406         ak4531->write(ak4531, AK4531_RESET, 0x03);      /* no RST, PD */
 407         udelay(100);
 408         ak4531->write(ak4531, AK4531_CLOCK, 0x00);      /* CODEC ADC and CODEC DAC use {LR,B}CLK2 and run off LRCLK2 PLL */
 409         for (idx = 0; idx <= 0x19; idx++) {
 410                 if (idx == AK4531_RESET || idx == AK4531_CLOCK)
 411                         continue;
 412                 ak4531->write(ak4531, idx, ak4531->regs[idx] = snd_ak4531_initial_map[idx]);    /* recording source is mixer */
 413         }
 414         for (idx = 0; idx < ARRAY_SIZE(snd_ak4531_controls); idx++) {
 415                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ak4531_controls[idx], ak4531))) < 0) {
 416                         snd_ak4531_free(ak4531);
 417                         return err;
 418                 }
 419         }
 420         snd_ak4531_proc_init(card, ak4531);
 421         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, ak4531, &ops)) < 0) {
 422                 snd_ak4531_free(ak4531);
 423                 return err;
 424         }
 425
 426 #if 0
 427         snd_ak4531_dump(ak4531);
 428 #endif
 429         *rak4531 = ak4531;
 430         return 0;
 431 }
 432
 433 /*
 434  * power management
 435  */
 436 #ifdef CONFIG_PM
 437 void snd_ak4531_suspend(struct snd_ak4531 *ak4531)
 438 {
 439         /* mute */
 440         ak4531->write(ak4531, AK4531_LMASTER, 0x9f);
 441         ak4531->write(ak4531, AK4531_RMASTER, 0x9f);
 442         /* powerdown */
 443         ak4531->write(ak4531, AK4531_RESET, 0x01);
 444 }
 445
 446 void snd_ak4531_resume(struct snd_ak4531 *ak4531)
 447 {
 448         int idx;
 449
 450         /* initialize */
 451         ak4531->write(ak4531, AK4531_RESET, 0x03);
 452         udelay(100);
 453         ak4531->write(ak4531, AK4531_CLOCK, 0x00);
 454         /* restore mixer registers */
 455         for (idx = 0; idx <= 0x19; idx++) {
 456                 if (idx == AK4531_RESET || idx == AK4531_CLOCK)
 457                         continue;
 458                 ak4531->write(ak4531, idx, ak4531->regs[idx]);
 459         }
 460 }
 461 #endif
 462
 463 #ifdef CONFIG_PROC_FS
 464 /*
 465  * /proc interface
 466  */
 467
 468 static void snd_ak4531_proc_read(struct snd_info_entry *entry,
 469                                  struct snd_info_buffer *buffer)
 470 {
 471         struct snd_ak4531 *ak4531 = entry->private_data;
 472
 473         snd_iprintf(buffer, "Asahi Kasei AK4531\n\n");
 474         snd_iprintf(buffer, "Recording source   : %s\n"
 475                     "MIC gain           : %s\n",
 476                     ak4531->regs[AK4531_AD_IN] & 1 ? "external" : "mixer",
 477                     ak4531->regs[AK4531_MIC_GAIN] & 1 ? "+30dB" : "+0dB");
 478 }
 479
 480 static void snd_ak4531_proc_init(struct snd_card *card, struct snd_ak4531 *ak4531)
 481 {
 482         struct snd_info_entry *entry;
 483
 484         if (! snd_card_proc_new(card, "ak4531", &entry))
 485                 snd_info_set_text_ops(entry, ak4531, snd_ak4531_proc_read);
 486 }
 487 #endif
 488
 489 EXPORT_SYMBOL(snd_ak4531_mixer);
 490 #ifdef CONFIG_PM
 491 EXPORT_SYMBOL(snd_ak4531_suspend);
 492 EXPORT_SYMBOL(snd_ak4531_resume);
 493 #endif
 494
 495 /*
 496  *  INIT part
 497  */
 498
 499 static int __init alsa_ak4531_init(void)
 500 {
 501         return 0;
 502 }
 503
 504 static void __exit alsa_ak4531_exit(void)
 505 {
 506 }
 507
 508 module_init(alsa_ak4531_init)
 509 module_exit(alsa_ak4531_exit)