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[] = { 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 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 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 495