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 493