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