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 <linux/of_device.h> 26 #include <sound/core.h> 27 #include <sound/pcm.h> 28 #include <sound/pcm_params.h> 29 #include <sound/soc.h> 30 #include <sound/initval.h> 31 #include <sound/tlv.h> 32 33 #include "wm8731.h" 34 35 #define WM8731_NUM_SUPPLIES 4 36 static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = { 37 "AVDD", 38 "HPVDD", 39 "DCVDD", 40 "DBVDD", 41 }; 42 43 /* codec private data */ 44 struct wm8731_priv { 45 enum snd_soc_control_type control_type; 46 struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES]; 47 unsigned int sysclk; 48 int sysclk_type; 49 int playback_fs; 50 bool deemph; 51 }; 52 53 54 /* 55 * wm8731 register cache 56 * We can't read the WM8731 register space when we are 57 * using 2 wire for device control, so we cache them instead. 58 * There is no point in caching the reset register 59 */ 60 static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { 61 0x0097, 0x0097, 0x0079, 0x0079, 62 0x000a, 0x0008, 0x009f, 0x000a, 63 0x0000, 0x0000 64 }; 65 66 #define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0) 67 68 static const char *wm8731_input_select[] = {"Line In", "Mic"}; 69 70 static const struct soc_enum wm8731_insel_enum = 71 SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select); 72 73 static int wm8731_deemph[] = { 0, 32000, 44100, 48000 }; 74 75 static int wm8731_set_deemph(struct snd_soc_codec *codec) 76 { 77 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 78 int val, i, best; 79 80 /* If we're using deemphasis select the nearest available sample 81 * rate. 82 */ 83 if (wm8731->deemph) { 84 best = 1; 85 for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) { 86 if (abs(wm8731_deemph[i] - wm8731->playback_fs) < 87 abs(wm8731_deemph[best] - wm8731->playback_fs)) 88 best = i; 89 } 90 91 val = best << 1; 92 } else { 93 best = 0; 94 val = 0; 95 } 96 97 dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n", 98 best, wm8731_deemph[best]); 99 100 return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val); 101 } 102 103 static int wm8731_get_deemph(struct snd_kcontrol *kcontrol, 104 struct snd_ctl_elem_value *ucontrol) 105 { 106 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 107 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 108 109 ucontrol->value.enumerated.item[0] = wm8731->deemph; 110 111 return 0; 112 } 113 114 static int wm8731_put_deemph(struct snd_kcontrol *kcontrol, 115 struct snd_ctl_elem_value *ucontrol) 116 { 117 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 118 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 119 int deemph = ucontrol->value.enumerated.item[0]; 120 int ret = 0; 121 122 if (deemph > 1) 123 return -EINVAL; 124 125 mutex_lock(&codec->mutex); 126 if (wm8731->deemph != deemph) { 127 wm8731->deemph = deemph; 128 129 wm8731_set_deemph(codec); 130 131 ret = 1; 132 } 133 mutex_unlock(&codec->mutex); 134 135 return ret; 136 } 137 138 static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0); 139 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0); 140 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); 141 static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0); 142 143 static const struct snd_kcontrol_new wm8731_snd_controls[] = { 144 145 SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, 146 0, 127, 0, out_tlv), 147 SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, 148 7, 1, 0), 149 150 SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0, 151 in_tlv), 152 SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), 153 154 SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv), 155 SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1), 156 157 SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1, 158 sidetone_tlv), 159 160 SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), 161 SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), 162 163 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, 164 wm8731_get_deemph, wm8731_put_deemph), 165 }; 166 167 /* Output Mixer */ 168 static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { 169 SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), 170 SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), 171 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), 172 }; 173 174 /* Input mux */ 175 static const struct snd_kcontrol_new wm8731_input_mux_controls = 176 SOC_DAPM_ENUM("Input Select", wm8731_insel_enum); 177 178 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { 179 SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0), 180 SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0), 181 SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, 182 &wm8731_output_mixer_controls[0], 183 ARRAY_SIZE(wm8731_output_mixer_controls)), 184 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), 185 SND_SOC_DAPM_OUTPUT("LOUT"), 186 SND_SOC_DAPM_OUTPUT("LHPOUT"), 187 SND_SOC_DAPM_OUTPUT("ROUT"), 188 SND_SOC_DAPM_OUTPUT("RHPOUT"), 189 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), 190 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), 191 SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), 192 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), 193 SND_SOC_DAPM_INPUT("MICIN"), 194 SND_SOC_DAPM_INPUT("RLINEIN"), 195 SND_SOC_DAPM_INPUT("LLINEIN"), 196 }; 197 198 static int wm8731_check_osc(struct snd_soc_dapm_widget *source, 199 struct snd_soc_dapm_widget *sink) 200 { 201 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(source->codec); 202 203 return wm8731->sysclk_type == WM8731_SYSCLK_XTAL; 204 } 205 206 static const struct snd_soc_dapm_route wm8731_intercon[] = { 207 {"DAC", NULL, "OSC", wm8731_check_osc}, 208 {"ADC", NULL, "OSC", wm8731_check_osc}, 209 {"DAC", NULL, "ACTIVE"}, 210 {"ADC", NULL, "ACTIVE"}, 211 212 /* output mixer */ 213 {"Output Mixer", "Line Bypass Switch", "Line Input"}, 214 {"Output Mixer", "HiFi Playback Switch", "DAC"}, 215 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, 216 217 /* outputs */ 218 {"RHPOUT", NULL, "Output Mixer"}, 219 {"ROUT", NULL, "Output Mixer"}, 220 {"LHPOUT", NULL, "Output Mixer"}, 221 {"LOUT", NULL, "Output Mixer"}, 222 223 /* input mux */ 224 {"Input Mux", "Line In", "Line Input"}, 225 {"Input Mux", "Mic", "Mic Bias"}, 226 {"ADC", NULL, "Input Mux"}, 227 228 /* inputs */ 229 {"Line Input", NULL, "LLINEIN"}, 230 {"Line Input", NULL, "RLINEIN"}, 231 {"Mic Bias", NULL, "MICIN"}, 232 }; 233 234 struct _coeff_div { 235 u32 mclk; 236 u32 rate; 237 u16 fs; 238 u8 sr:4; 239 u8 bosr:1; 240 u8 usb:1; 241 }; 242 243 /* codec mclk clock divider coefficients */ 244 static const struct _coeff_div coeff_div[] = { 245 /* 48k */ 246 {12288000, 48000, 256, 0x0, 0x0, 0x0}, 247 {18432000, 48000, 384, 0x0, 0x1, 0x0}, 248 {12000000, 48000, 250, 0x0, 0x0, 0x1}, 249 250 /* 32k */ 251 {12288000, 32000, 384, 0x6, 0x0, 0x0}, 252 {18432000, 32000, 576, 0x6, 0x1, 0x0}, 253 {12000000, 32000, 375, 0x6, 0x0, 0x1}, 254 255 /* 8k */ 256 {12288000, 8000, 1536, 0x3, 0x0, 0x0}, 257 {18432000, 8000, 2304, 0x3, 0x1, 0x0}, 258 {11289600, 8000, 1408, 0xb, 0x0, 0x0}, 259 {16934400, 8000, 2112, 0xb, 0x1, 0x0}, 260 {12000000, 8000, 1500, 0x3, 0x0, 0x1}, 261 262 /* 96k */ 263 {12288000, 96000, 128, 0x7, 0x0, 0x0}, 264 {18432000, 96000, 192, 0x7, 0x1, 0x0}, 265 {12000000, 96000, 125, 0x7, 0x0, 0x1}, 266 267 /* 44.1k */ 268 {11289600, 44100, 256, 0x8, 0x0, 0x0}, 269 {16934400, 44100, 384, 0x8, 0x1, 0x0}, 270 {12000000, 44100, 272, 0x8, 0x1, 0x1}, 271 272 /* 88.2k */ 273 {11289600, 88200, 128, 0xf, 0x0, 0x0}, 274 {16934400, 88200, 192, 0xf, 0x1, 0x0}, 275 {12000000, 88200, 136, 0xf, 0x1, 0x1}, 276 }; 277 278 static inline int get_coeff(int mclk, int rate) 279 { 280 int i; 281 282 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { 283 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) 284 return i; 285 } 286 return 0; 287 } 288 289 static int wm8731_hw_params(struct snd_pcm_substream *substream, 290 struct snd_pcm_hw_params *params, 291 struct snd_soc_dai *dai) 292 { 293 struct snd_soc_codec *codec = dai->codec; 294 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 295 u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3; 296 int i = get_coeff(wm8731->sysclk, params_rate(params)); 297 u16 srate = (coeff_div[i].sr << 2) | 298 (coeff_div[i].bosr << 1) | coeff_div[i].usb; 299 300 wm8731->playback_fs = params_rate(params); 301 302 snd_soc_write(codec, WM8731_SRATE, srate); 303 304 /* bit size */ 305 switch (params_format(params)) { 306 case SNDRV_PCM_FORMAT_S16_LE: 307 break; 308 case SNDRV_PCM_FORMAT_S20_3LE: 309 iface |= 0x0004; 310 break; 311 case SNDRV_PCM_FORMAT_S24_LE: 312 iface |= 0x0008; 313 break; 314 } 315 316 wm8731_set_deemph(codec); 317 318 snd_soc_write(codec, WM8731_IFACE, iface); 319 return 0; 320 } 321 322 static int wm8731_mute(struct snd_soc_dai *dai, int mute) 323 { 324 struct snd_soc_codec *codec = dai->codec; 325 u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7; 326 327 if (mute) 328 snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8); 329 else 330 snd_soc_write(codec, WM8731_APDIGI, mute_reg); 331 return 0; 332 } 333 334 static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, 335 int clk_id, unsigned int freq, int dir) 336 { 337 struct snd_soc_codec *codec = codec_dai->codec; 338 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 339 340 switch (clk_id) { 341 case WM8731_SYSCLK_XTAL: 342 case WM8731_SYSCLK_MCLK: 343 wm8731->sysclk_type = clk_id; 344 break; 345 default: 346 return -EINVAL; 347 } 348 349 switch (freq) { 350 case 11289600: 351 case 12000000: 352 case 12288000: 353 case 16934400: 354 case 18432000: 355 wm8731->sysclk = freq; 356 break; 357 default: 358 return -EINVAL; 359 } 360 361 snd_soc_dapm_sync(&codec->dapm); 362 363 return 0; 364 } 365 366 367 static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, 368 unsigned int fmt) 369 { 370 struct snd_soc_codec *codec = codec_dai->codec; 371 u16 iface = 0; 372 373 /* set master/slave audio interface */ 374 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 375 case SND_SOC_DAIFMT_CBM_CFM: 376 iface |= 0x0040; 377 break; 378 case SND_SOC_DAIFMT_CBS_CFS: 379 break; 380 default: 381 return -EINVAL; 382 } 383 384 /* interface format */ 385 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 386 case SND_SOC_DAIFMT_I2S: 387 iface |= 0x0002; 388 break; 389 case SND_SOC_DAIFMT_RIGHT_J: 390 break; 391 case SND_SOC_DAIFMT_LEFT_J: 392 iface |= 0x0001; 393 break; 394 case SND_SOC_DAIFMT_DSP_A: 395 iface |= 0x0003; 396 break; 397 case SND_SOC_DAIFMT_DSP_B: 398 iface |= 0x0013; 399 break; 400 default: 401 return -EINVAL; 402 } 403 404 /* clock inversion */ 405 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 406 case SND_SOC_DAIFMT_NB_NF: 407 break; 408 case SND_SOC_DAIFMT_IB_IF: 409 iface |= 0x0090; 410 break; 411 case SND_SOC_DAIFMT_IB_NF: 412 iface |= 0x0080; 413 break; 414 case SND_SOC_DAIFMT_NB_IF: 415 iface |= 0x0010; 416 break; 417 default: 418 return -EINVAL; 419 } 420 421 /* set iface */ 422 snd_soc_write(codec, WM8731_IFACE, iface); 423 return 0; 424 } 425 426 static int wm8731_set_bias_level(struct snd_soc_codec *codec, 427 enum snd_soc_bias_level level) 428 { 429 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 430 int ret; 431 u16 reg; 432 433 switch (level) { 434 case SND_SOC_BIAS_ON: 435 break; 436 case SND_SOC_BIAS_PREPARE: 437 break; 438 case SND_SOC_BIAS_STANDBY: 439 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { 440 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), 441 wm8731->supplies); 442 if (ret != 0) 443 return ret; 444 445 snd_soc_cache_sync(codec); 446 } 447 448 /* Clear PWROFF, gate CLKOUT, everything else as-is */ 449 reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f; 450 snd_soc_write(codec, WM8731_PWR, reg | 0x0040); 451 break; 452 case SND_SOC_BIAS_OFF: 453 snd_soc_write(codec, WM8731_PWR, 0xffff); 454 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), 455 wm8731->supplies); 456 break; 457 } 458 codec->dapm.bias_level = level; 459 return 0; 460 } 461 462 #define WM8731_RATES SNDRV_PCM_RATE_8000_96000 463 464 #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 465 SNDRV_PCM_FMTBIT_S24_LE) 466 467 static struct snd_soc_dai_ops wm8731_dai_ops = { 468 .hw_params = wm8731_hw_params, 469 .digital_mute = wm8731_mute, 470 .set_sysclk = wm8731_set_dai_sysclk, 471 .set_fmt = wm8731_set_dai_fmt, 472 }; 473 474 static struct snd_soc_dai_driver wm8731_dai = { 475 .name = "wm8731-hifi", 476 .playback = { 477 .stream_name = "Playback", 478 .channels_min = 1, 479 .channels_max = 2, 480 .rates = WM8731_RATES, 481 .formats = WM8731_FORMATS,}, 482 .capture = { 483 .stream_name = "Capture", 484 .channels_min = 1, 485 .channels_max = 2, 486 .rates = WM8731_RATES, 487 .formats = WM8731_FORMATS,}, 488 .ops = &wm8731_dai_ops, 489 .symmetric_rates = 1, 490 }; 491 492 #ifdef CONFIG_PM 493 static int wm8731_suspend(struct snd_soc_codec *codec, pm_message_t state) 494 { 495 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); 496 497 return 0; 498 } 499 500 static int wm8731_resume(struct snd_soc_codec *codec) 501 { 502 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 503 504 return 0; 505 } 506 #else 507 #define wm8731_suspend NULL 508 #define wm8731_resume NULL 509 #endif 510 511 static int wm8731_probe(struct snd_soc_codec *codec) 512 { 513 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 514 int ret = 0, i; 515 516 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8731->control_type); 517 if (ret < 0) { 518 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 519 return ret; 520 } 521 522 for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++) 523 wm8731->supplies[i].supply = wm8731_supply_names[i]; 524 525 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies), 526 wm8731->supplies); 527 if (ret != 0) { 528 dev_err(codec->dev, "Failed to request supplies: %d\n", ret); 529 return ret; 530 } 531 532 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), 533 wm8731->supplies); 534 if (ret != 0) { 535 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); 536 goto err_regulator_get; 537 } 538 539 ret = wm8731_reset(codec); 540 if (ret < 0) { 541 dev_err(codec->dev, "Failed to issue reset: %d\n", ret); 542 goto err_regulator_enable; 543 } 544 545 wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 546 547 /* Latch the update bits */ 548 snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0); 549 snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0); 550 snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0); 551 snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0); 552 553 /* Disable bypass path by default */ 554 snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0); 555 556 /* Regulators will have been enabled by bias management */ 557 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 558 559 return 0; 560 561 err_regulator_enable: 562 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 563 err_regulator_get: 564 regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 565 566 return ret; 567 } 568 569 /* power down chip */ 570 static int wm8731_remove(struct snd_soc_codec *codec) 571 { 572 struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); 573 574 wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); 575 576 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 577 regulator_bulk_free(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); 578 579 return 0; 580 } 581 582 static struct snd_soc_codec_driver soc_codec_dev_wm8731 = { 583 .probe = wm8731_probe, 584 .remove = wm8731_remove, 585 .suspend = wm8731_suspend, 586 .resume = wm8731_resume, 587 .set_bias_level = wm8731_set_bias_level, 588 .reg_cache_size = ARRAY_SIZE(wm8731_reg), 589 .reg_word_size = sizeof(u16), 590 .reg_cache_default = wm8731_reg, 591 .dapm_widgets = wm8731_dapm_widgets, 592 .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets), 593 .dapm_routes = wm8731_intercon, 594 .num_dapm_routes = ARRAY_SIZE(wm8731_intercon), 595 .controls = wm8731_snd_controls, 596 .num_controls = ARRAY_SIZE(wm8731_snd_controls), 597 }; 598 599 static const struct of_device_id wm8731_of_match[] = { 600 { .compatible = "wlf,wm8731", }, 601 { } 602 }; 603 604 MODULE_DEVICE_TABLE(of, wm8731_of_match); 605 606 #if defined(CONFIG_SPI_MASTER) 607 static int __devinit wm8731_spi_probe(struct spi_device *spi) 608 { 609 struct wm8731_priv *wm8731; 610 int ret; 611 612 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); 613 if (wm8731 == NULL) 614 return -ENOMEM; 615 616 wm8731->control_type = SND_SOC_SPI; 617 spi_set_drvdata(spi, wm8731); 618 619 ret = snd_soc_register_codec(&spi->dev, 620 &soc_codec_dev_wm8731, &wm8731_dai, 1); 621 if (ret < 0) 622 kfree(wm8731); 623 return ret; 624 } 625 626 static int __devexit wm8731_spi_remove(struct spi_device *spi) 627 { 628 snd_soc_unregister_codec(&spi->dev); 629 kfree(spi_get_drvdata(spi)); 630 return 0; 631 } 632 633 static struct spi_driver wm8731_spi_driver = { 634 .driver = { 635 .name = "wm8731", 636 .owner = THIS_MODULE, 637 .of_match_table = wm8731_of_match, 638 }, 639 .probe = wm8731_spi_probe, 640 .remove = __devexit_p(wm8731_spi_remove), 641 }; 642 #endif /* CONFIG_SPI_MASTER */ 643 644 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 645 static __devinit int wm8731_i2c_probe(struct i2c_client *i2c, 646 const struct i2c_device_id *id) 647 { 648 struct wm8731_priv *wm8731; 649 int ret; 650 651 wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); 652 if (wm8731 == NULL) 653 return -ENOMEM; 654 655 i2c_set_clientdata(i2c, wm8731); 656 wm8731->control_type = SND_SOC_I2C; 657 658 ret = snd_soc_register_codec(&i2c->dev, 659 &soc_codec_dev_wm8731, &wm8731_dai, 1); 660 if (ret < 0) 661 kfree(wm8731); 662 return ret; 663 } 664 665 static __devexit int wm8731_i2c_remove(struct i2c_client *client) 666 { 667 snd_soc_unregister_codec(&client->dev); 668 kfree(i2c_get_clientdata(client)); 669 return 0; 670 } 671 672 static const struct i2c_device_id wm8731_i2c_id[] = { 673 { "wm8731", 0 }, 674 { } 675 }; 676 MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); 677 678 static struct i2c_driver wm8731_i2c_driver = { 679 .driver = { 680 .name = "wm8731", 681 .owner = THIS_MODULE, 682 .of_match_table = wm8731_of_match, 683 }, 684 .probe = wm8731_i2c_probe, 685 .remove = __devexit_p(wm8731_i2c_remove), 686 .id_table = wm8731_i2c_id, 687 }; 688 #endif 689 690 static int __init wm8731_modinit(void) 691 { 692 int ret = 0; 693 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 694 ret = i2c_add_driver(&wm8731_i2c_driver); 695 if (ret != 0) { 696 printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n", 697 ret); 698 } 699 #endif 700 #if defined(CONFIG_SPI_MASTER) 701 ret = spi_register_driver(&wm8731_spi_driver); 702 if (ret != 0) { 703 printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n", 704 ret); 705 } 706 #endif 707 return ret; 708 } 709 module_init(wm8731_modinit); 710 711 static void __exit wm8731_exit(void) 712 { 713 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 714 i2c_del_driver(&wm8731_i2c_driver); 715 #endif 716 #if defined(CONFIG_SPI_MASTER) 717 spi_unregister_driver(&wm8731_spi_driver); 718 #endif 719 } 720 module_exit(wm8731_exit); 721 722 MODULE_DESCRIPTION("ASoC WM8731 driver"); 723 MODULE_AUTHOR("Richard Purdie"); 724 MODULE_LICENSE("GPL"); 725