1 /* 2 * wm8731.c -- WM8731 ALSA SoC Audio driver 3 * 4 * Copyright 2005 Openedhand Ltd. 5 * 6 * Author: Richard Purdie <richard@openedhand.com> 7 * 8 * Based on wm8753.c by Liam Girdwood 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/module.h> 16 #include <linux/moduleparam.h> 17 #include <linux/init.h> 18 #include <linux/delay.h> 19 #include <linux/pm.h> 20 #include <linux/i2c.h> 21 #include <linux/slab.h> 22 #include <linux/platform_device.h> 23 #include <linux/regulator/consumer.h> 24 #include <linux/spi/spi.h> 25 #include <sound/core.h> 26 #include <sound/pcm.h> 27 #include <sound/pcm_params.h> 28 #include <sound/soc.h> 29 #include <sound/initval.h> 30 #include <sound/tlv.h> 31 32 #include "wm8731.h" 33 34 #define WM8731_NUM_SUPPLIES 4 35 static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = { 36 "AVDD", 37 "HPVDD", 38 "DCVDD", 39 "DBVDD", 40 }; 41 42 /* codec private data */ 43 struct wm8731_priv { 44 enum snd_soc_control_type control_type; 45 struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES]; 46 unsigned int sysclk; 47 int sysclk_type; 48 int playback_fs; 49 bool deemph; 50 }; 51 52 53 /* 54 * wm8731 register cache 55 * We can't read the WM8731 register space when we are 56 * using 2 wire for device control, so we cache them instead. 57 * There is no point in caching the reset register 58 */ 59 static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { 60 0x0097, 0x0097, 0x0079, 0x0079, 61 0x000a, 0x0008, 0x009f, 0x000a, 62 0x0000, 0x0000 63 }; 64 65 #define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0) 66 67 static const char *wm8731_input_select[] = {"Line In", "Mic"}; 68 69 static const struct soc_enum wm8731_insel_enum = 70 SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select); 71 72 static int wm8731_deemph[] = { 0, 32000, 44100, 48000 }; 73 74 static int wm8731_set_deemph(struct snd_soc_codec *codec) 75 { 76 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 77 int val, i, best; 78 79 /* If we're using deemphasis select the nearest available sample 80 * rate. 81 */ 82 if (wm8731->deemph) { 83 best = 1; 84 for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) { 85 if (abs(wm8731_deemph[i] - wm8731->playback_fs) < 86 abs(wm8731_deemph[best] - wm8731->playback_fs)) 87 best = i; 88 } 89 90 val = best << 1; 91 } else { 92 best = 0; 93 val = 0; 94 } 95 96 dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n", 97 best, wm8731_deemph[best]); 98 99 return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val); 100 } 101 102 static int wm8731_get_deemph(struct snd_kcontrol *kcontrol, 103 struct snd_ctl_elem_value *ucontrol) 104 { 105 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 106 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 107 108 ucontrol->value.enumerated.item[0] = wm8731->deemph; 109 110 return 0; 111 } 112 113 static int wm8731_put_deemph(struct snd_kcontrol *kcontrol, 114 struct snd_ctl_elem_value *ucontrol) 115 { 116 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 117 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 118 int deemph = ucontrol->value.enumerated.item[0]; 119 int ret = 0; 120 121 if (deemph > 1) 122 return -EINVAL; 123 124 mutex_lock(&codec->mutex); 125 if (wm8731->deemph != deemph) { 126 wm8731->deemph = deemph; 127 128 wm8731_set_deemph(codec); 129 130 ret = 1; 131 } 132 mutex_unlock(&codec->mutex); 133 134 return ret; 135 } 136 137 static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0); 138 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0); 139 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 140 static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0); 141 142 static const struct snd_kcontrol_new wm8731_snd_controls[] = { 143 144 SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, 145 0, 127, 0, out_tlv), 146 SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, 147 7, 1, 0), 148 149 SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0, 150 in_tlv), 151 SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), 152 153 SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv), 154 SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1), 155 156 SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1, 157 sidetone_tlv), 158 159 SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), 160 SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), 161 162 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, 163 wm8731_get_deemph, wm8731_put_deemph), 164 }; 165 166 /* Output Mixer */ 167 static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { 168 SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), 169 SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), 170 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), 171 }; 172 173 /* Input mux */ 174 static const struct snd_kcontrol_new wm8731_input_mux_controls = 175 SOC_DAPM_ENUM("Input Select", wm8731_insel_enum); 176 177 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { 178 SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0), 179 SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, 180 &wm8731_output_mixer_controls[0], 181 ARRAY_SIZE(wm8731_output_mixer_controls)), 182 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), 183 SND_SOC_DAPM_OUTPUT("LOUT"), 184 SND_SOC_DAPM_OUTPUT("LHPOUT"), 185 SND_SOC_DAPM_OUTPUT("ROUT"), 186 SND_SOC_DAPM_OUTPUT("RHPOUT"), 187 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), 188 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), 189 SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), 190 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), 191 SND_SOC_DAPM_INPUT("MICIN"), 192 SND_SOC_DAPM_INPUT("RLINEIN"), 193 SND_SOC_DAPM_INPUT("LLINEIN"), 194 }; 195 196 static int wm8731_check_osc(struct snd_soc_dapm_widget *source, 197 struct snd_soc_dapm_widget *sink) 198 { 199 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(source->codec); 200 201 return wm8731->sysclk_type == WM8731_SYSCLK_MCLK; 202 } 203 204 static const struct snd_soc_dapm_route intercon[] = { 205 {"DAC", NULL, "OSC", wm8731_check_osc}, 206 {"ADC", NULL, "OSC", wm8731_check_osc}, 207 208 /* output mixer */ 209 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 210 {"Output Mixer", "HiFi Playback Switch", "DAC"}, 211 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, 212 213 /* outputs */ 214 {"RHPOUT", NULL, "Output Mixer"}, 215 {"ROUT", NULL, "Output Mixer"}, 216 {"LHPOUT", NULL, "Output Mixer"}, 217 {"LOUT", NULL, "Output Mixer"}, 218 219 /* input mux */ 220 {"Input Mux", "Line In", "Line Input"}, 221 {"Input Mux", "Mic", "Mic Bias"}, 222 {"ADC", NULL, "Input Mux"}, 223 224 /* inputs */ 225 {"Line Input", NULL, "LLINEIN"}, 226 {"Line Input", NULL, "RLINEIN"}, 227 {"Mic Bias", NULL, "MICIN"}, 228 }; 229 230 static int wm8731_add_widgets(struct snd_soc_codec *codec) 231 { 232 struct snd_soc_dapm_context *dapm = &codec->dapm; 233 234 snd_soc_dapm_new_controls(dapm, wm8731_dapm_widgets, 235 ARRAY_SIZE(wm8731_dapm_widgets)); 236 snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); 237 238 return 0; 239 } 240 241 struct _coeff_div { 242 u32 mclk; 243 u32 rate; 244 u16 fs; 245 u8 sr:4; 246 u8 bosr:1; 247 u8 usb:1; 248 }; 249 250 /* codec mclk clock divider coefficients */ 251 static const struct _coeff_div coeff_div[] = { 252 /* 48k */ 253 {12288000, 48000, 256, 0x0, 0x0, 0x0}, 254 {18432000, 48000, 384, 0x0, 0x1, 0x0}, 255 {12000000, 48000, 250, 0x0, 0x0, 0x1}, 256 257 /* 32k */ 258 {12288000, 32000, 384, 0x6, 0x0, 0x0}, 259 {18432000, 32000, 576, 0x6, 0x1, 0x0}, 260 {12000000, 32000, 375, 0x6, 0x0, 0x1}, 261 262 /* 8k */ 263 {12288000, 8000, 1536, 0x3, 0x0, 0x0}, 264 {18432000, 8000, 2304, 0x3, 0x1, 0x0}, 265 {11289600, 8000, 1408, 0xb, 0x0, 0x0}, 266 {16934400, 8000, 2112, 0xb, 0x1, 0x0}, 267 {12000000, 8000, 1500, 0x3, 0x0, 0x1}, 268 269 /* 96k */ 270 {12288000, 96000, 128, 0x7, 0x0, 0x0}, 271 {18432000, 96000, 192, 0x7, 0x1, 0x0}, 272 {12000000, 96000, 125, 0x7, 0x0, 0x1}, 273 274 /* 44.1k */ 275 {11289600, 44100, 256, 0x8, 0x0, 0x0}, 276 {16934400, 44100, 384, 0x8, 0x1, 0x0}, 277 {12000000, 44100, 272, 0x8, 0x1, 0x1}, 278 279 /* 88.2k */ 280 {11289600, 88200, 128, 0xf, 0x0, 0x0}, 281 {16934400, 88200, 192, 0xf, 0x1, 0x0}, 282 {12000000, 88200, 136, 0xf, 0x1, 0x1}, 283 }; 284 285 static inline int get_coeff(int mclk, int rate) 286 { 287 int i; 288 289 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 290 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 291 return i; 292 } 293 return 0; 294 } 295 296 static int wm8731_hw_params(struct snd_pcm_substream *substream, 297 struct snd_pcm_hw_params *params, 298 struct snd_soc_dai *dai) 299 { 300 struct snd_soc_codec *codec = dai->codec; 301 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 302 u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3; 303 int i = get_coeff(wm8731->sysclk, params_rate(params)); 304 u16 srate = (coeff_div[i].sr << 2) | 305 (coeff_div[i].bosr << 1) | coeff_div[i].usb; 306 307 wm8731->playback_fs = params_rate(params); 308 309 snd_soc_write(codec, WM8731_SRATE, srate); 310 311 /* bit size */ 312 switch (params_format(params)) { 313 case SNDRV_PCM_FORMAT_S16_LE: 314 break; 315 case SNDRV_PCM_FORMAT_S20_3LE: 316 iface |= 0x0004; 317 break; 318 case SNDRV_PCM_FORMAT_S24_LE: 319 iface |= 0x0008; 320 break; 321 } 322 323 wm8731_set_deemph(codec); 324 325 snd_soc_write(codec, WM8731_IFACE, iface); 326 return 0; 327 } 328 329 static int wm8731_pcm_prepare(struct snd_pcm_substream *substream, 330 struct snd_soc_dai *dai) 331 { 332 struct snd_soc_codec *codec = dai->codec; 333 334 /* set active */ 335 snd_soc_write(codec, WM8731_ACTIVE, 0x0001); 336 337 return 0; 338 } 339 340 static void wm8731_shutdown(struct snd_pcm_substream *substream, 341 struct snd_soc_dai *dai) 342 { 343 struct snd_soc_codec *codec = dai->codec; 344 345 /* deactivate */ 346 if (!codec->active) { 347 udelay(50); 348 snd_soc_write(codec, WM8731_ACTIVE, 0x0); 349 } 350 } 351 352 static int wm8731_mute(struct snd_soc_dai *dai, int mute) 353 { 354 struct snd_soc_codec *codec = dai->codec; 355 u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7; 356 357 if (mute) 358 snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8); 359 else 360 snd_soc_write(codec, WM8731_APDIGI, mute_reg); 361 return 0; 362 } 363 364 static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, 365 int clk_id, unsigned int freq, int dir) 366 { 367 struct snd_soc_codec *codec = codec_dai->codec; 368 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 369 370 switch (clk_id) { 371 case WM8731_SYSCLK_XTAL: 372 case WM8731_SYSCLK_MCLK: 373 wm8731->sysclk_type = clk_id; 374 break; 375 default: 376 return -EINVAL; 377 } 378 379 switch (freq) { 380 case 11289600: 381 case 12000000: 382 case 12288000: 383 case 16934400: 384 case 18432000: 385 wm8731->sysclk = freq; 386 break; 387 default: 388 return -EINVAL; 389 } 390 391 snd_soc_dapm_sync(&codec->dapm); 392 393 return 0; 394 } 395 396 397 static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, 398 unsigned int fmt) 399 { 400 struct snd_soc_codec *codec = codec_dai->codec; 401 u16 iface = 0; 402 403 /* set master/slave audio interface */ 404 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 405 case SND_SOC_DAIFMT_CBM_CFM: 406 iface |= 0x0040; 407 break; 408 case SND_SOC_DAIFMT_CBS_CFS: 409 break; 410 default: 411 return -EINVAL; 412 } 413 414 /* interface format */ 415 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 416 case SND_SOC_DAIFMT_I2S: 417 iface |= 0x0002; 418 break; 419 case SND_SOC_DAIFMT_RIGHT_J: 420 break; 421 case SND_SOC_DAIFMT_LEFT_J: 422 iface |= 0x0001; 423 break; 424 case SND_SOC_DAIFMT_DSP_A: 425 iface |= 0x0003; 426 break; 427 case SND_SOC_DAIFMT_DSP_B: 428 iface |= 0x0013; 429 break; 430 default: 431 return -EINVAL; 432 } 433 434 /* clock inversion */ 435 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 436 case SND_SOC_DAIFMT_NB_NF: 437 break; 438 case SND_SOC_DAIFMT_IB_IF: 439 iface |= 0x0090; 440 break; 441 case SND_SOC_DAIFMT_IB_NF: 442 iface |= 0x0080; 443 break; 444 case SND_SOC_DAIFMT_NB_IF: 445 iface |= 0x0010; 446 break; 447 default: 448 return -EINVAL; 449 } 450 451 /* set iface */ 452 snd_soc_write(codec, WM8731_IFACE, iface); 453 return 0; 454 } 455 456 static int wm8731_set_bias_level(struct snd_soc_codec *codec, 457 enum snd_soc_bias_level level) 458 { 459 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 460 int i, ret; 461 u8 data[2]; 462 u16 *cache = codec->reg_cache; 463 u16 reg; 464 465 switch (level) { 466 case SND_SOC_BIAS_ON: 467 break; 468 case SND_SOC_BIAS_PREPARE: 469 break; 470 case SND_SOC_BIAS_STANDBY: 471 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 472 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), 473 wm8731->supplies); 474 if (ret != 0) 475 return ret; 476 477 /* Sync reg_cache with the hardware */ 478 for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) { 479 if (cache[i] == wm8731_reg[i]) 480 continue; 481 482 data[0] = (i << 1) | ((cache[i] >> 8) 483 & 0x0001); 484 data[1] = cache[i] & 0x00ff; 485 codec->hw_write(codec->control_data, data, 2); 486 } 487 } 488 489 /* Clear PWROFF, gate CLKOUT, everything else as-is */ 490 reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f; 491 snd_soc_write(codec, WM8731_PWR, reg | 0x0040); 492 break; 493 case SND_SOC_BIAS_OFF: 494 snd_soc_write(codec, WM8731_ACTIVE, 0x0); 495 snd_soc_write(codec, WM8731_PWR, 0xffff); 496 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), 497 wm8731->supplies); 498 break; 499 } 500 codec->dapm.bias_level = level; 501 return 0; 502 } 503 504 #define WM8731_RATES SNDRV_PCM_RATE_8000_96000 505 506 #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 507 SNDRV_PCM_FMTBIT_S24_LE) 508 509 static struct snd_soc_dai_ops wm8731_dai_ops = { 510 .prepare = wm8731_pcm_prepare, 511 .hw_params = wm8731_hw_params, 512 .shutdown = wm8731_shutdown, 513 .digital_mute = wm8731_mute, 514 .set_sysclk = wm8731_set_dai_sysclk, 515 .set_fmt = wm8731_set_dai_fmt, 516 }; 517 518 static struct snd_soc_dai_driver wm8731_dai = { 519 .name = "wm8731-hifi", 520 .playback = { 521 .stream_name = "Playback", 522 .channels_min = 1, 523 .channels_max = 2, 524 .rates = WM8731_RATES, 525 .formats = WM8731_FORMATS,}, 526 .capture = { 527 .stream_name = "Capture", 528 .channels_min = 1, 529 .channels_max = 2, 530 .rates = WM8731_RATES, 531 .formats = WM8731_FORMATS,}, 532 .ops = &wm8731_dai_ops, 533 .symmetric_rates = 1, 534 }; 535 536 #ifdef CONFIG_PM 537 static int wm8731_suspend(struct snd_soc_codec *codec, pm_message_t state) 538 { 539 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); 540 541 return 0; 542 } 543 544 static int wm8731_resume(struct snd_soc_codec *codec) 545 { 546 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 547 548 return 0; 549 } 550 #else 551 #define wm8731_suspend NULL 552 #define wm8731_resume NULL 553 #endif 554 555 static int wm8731_probe(struct snd_soc_codec *codec) 556 { 557 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 558 int ret = 0, i; 559 560 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8731->control_type); 561 if (ret < 0) { 562 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 563 return ret; 564 } 565 566 for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++) 567 wm8731->supplies[i].supply = wm8731_supply_names[i]; 568 569 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies), 570 wm8731->supplies); 571 if (ret != 0) { 572 dev_err(codec->dev, "Failed to request supplies: %d\n", ret); 573 return ret; 574 } 575 576 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), 577 wm8731->supplies); 578 if (ret != 0) { 579 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); 580 goto err_regulator_get; 581 } 582 583 ret = wm8731_reset(codec); 584 if (ret < 0) { 585 dev_err(codec->dev, "Failed to issue reset: %d\n", ret); 586 goto err_regulator_enable; 587 } 588 589 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 590 591 /* Latch the update bits */ 592 snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0); 593 snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0); 594 snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0); 595 snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0); 596 597 /* Disable bypass path by default */ 598 snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0); 599 600 snd_soc_add_controls(codec, wm8731_snd_controls, 601 ARRAY_SIZE(wm8731_snd_controls)); 602 wm8731_add_widgets(codec); 603 604 /* Regulators will have been enabled by bias management */ 605 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 606 607 return 0; 608 609 err_regulator_enable: 610 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 611 err_regulator_get: 612 regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 613 614 return ret; 615 } 616 617 /* power down chip */ 618 static int wm8731_remove(struct snd_soc_codec *codec) 619 { 620 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 621 622 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); 623 624 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 625 regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 626 627 return 0; 628 } 629 630 static struct snd_soc_codec_driver soc_codec_dev_wm8731 = { 631 .probe = wm8731_probe, 632 .remove = wm8731_remove, 633 .suspend = wm8731_suspend, 634 .resume = wm8731_resume, 635 .set_bias_level = wm8731_set_bias_level, 636 .reg_cache_size = ARRAY_SIZE(wm8731_reg), 637 .reg_word_size = sizeof(u16), 638 .reg_cache_default = wm8731_reg, 639 }; 640 641 #if defined(CONFIG_SPI_MASTER) 642 static int __devinit wm8731_spi_probe(struct spi_device *spi) 643 { 644 struct wm8731_priv *wm8731; 645 int ret; 646 647 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); 648 if (wm8731 == NULL) 649 return -ENOMEM; 650 651 wm8731->control_type = SND_SOC_SPI; 652 spi_set_drvdata(spi, wm8731); 653 654 ret = snd_soc_register_codec(&spi->dev, 655 &soc_codec_dev_wm8731, &wm8731_dai, 1); 656 if (ret < 0) 657 kfree(wm8731); 658 return ret; 659 } 660 661 static int __devexit wm8731_spi_remove(struct spi_device *spi) 662 { 663 snd_soc_unregister_codec(&spi->dev); 664 kfree(spi_get_drvdata(spi)); 665 return 0; 666 } 667 668 static struct spi_driver wm8731_spi_driver = { 669 .driver = { 670 .name = "wm8731-codec", 671 .owner = THIS_MODULE, 672 }, 673 .probe = wm8731_spi_probe, 674 .remove = __devexit_p(wm8731_spi_remove), 675 }; 676 #endif /* CONFIG_SPI_MASTER */ 677 678 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 679 static __devinit int wm8731_i2c_probe(struct i2c_client *i2c, 680 const struct i2c_device_id *id) 681 { 682 struct wm8731_priv *wm8731; 683 int ret; 684 685 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); 686 if (wm8731 == NULL) 687 return -ENOMEM; 688 689 i2c_set_clientdata(i2c, wm8731); 690 wm8731->control_type = SND_SOC_I2C; 691 692 ret = snd_soc_register_codec(&i2c->dev, 693 &soc_codec_dev_wm8731, &wm8731_dai, 1); 694 if (ret < 0) 695 kfree(wm8731); 696 return ret; 697 } 698 699 static __devexit int wm8731_i2c_remove(struct i2c_client *client) 700 { 701 snd_soc_unregister_codec(&client->dev); 702 kfree(i2c_get_clientdata(client)); 703 return 0; 704 } 705 706 static const struct i2c_device_id wm8731_i2c_id[] = { 707 { "wm8731", 0 }, 708 { } 709 }; 710 MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); 711 712 static struct i2c_driver wm8731_i2c_driver = { 713 .driver = { 714 .name = "wm8731-codec", 715 .owner = THIS_MODULE, 716 }, 717 .probe = wm8731_i2c_probe, 718 .remove = __devexit_p(wm8731_i2c_remove), 719 .id_table = wm8731_i2c_id, 720 }; 721 #endif 722 723 static int __init wm8731_modinit(void) 724 { 725 int ret = 0; 726 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 727 ret = i2c_add_driver(&wm8731_i2c_driver); 728 if (ret != 0) { 729 printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n", 730 ret); 731 } 732 #endif 733 #if defined(CONFIG_SPI_MASTER) 734 ret = spi_register_driver(&wm8731_spi_driver); 735 if (ret != 0) { 736 printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n", 737 ret); 738 } 739 #endif 740 return ret; 741 } 742 module_init(wm8731_modinit); 743 744 static void __exit wm8731_exit(void) 745 { 746 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 747 i2c_del_driver(&wm8731_i2c_driver); 748 #endif 749 #if defined(CONFIG_SPI_MASTER) 750 spi_unregister_driver(&wm8731_spi_driver); 751 #endif 752 } 753 module_exit(wm8731_exit); 754 755 MODULE_DESCRIPTION("ASoC WM8731 driver"); 756 MODULE_AUTHOR("Richard Purdie"); 757 MODULE_LICENSE("GPL"); 758