sound/soc/codecs/wm8510.c

   1 /*
   2  * wm8510.c  --  WM8510 ALSA Soc Audio driver
   3  *
   4  * Copyright 2006 Wolfson Microelectronics PLC.
   5  *
   6  * Author: Liam Girdwood <lrg@slimlogic.co.uk>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/delay.h>
  18 #include <linux/pm.h>
  19 #include <linux/i2c.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/slab.h>
  22 #include <linux/of_device.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/initval.h>
  28
  29 #include "wm8510.h"
  30
  31 /*
  32  * wm8510 register cache
  33  * We can't read the WM8510 register space when we are
  34  * using 2 wire for device control, so we cache them instead.
  35  */
  36 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
  37         0x0000, 0x0000, 0x0000, 0x0000,
  38         0x0050, 0x0000, 0x0140, 0x0000,
  39         0x0000, 0x0000, 0x0000, 0x00ff,
  40         0x0000, 0x0000, 0x0100, 0x00ff,
  41         0x0000, 0x0000, 0x012c, 0x002c,
  42         0x002c, 0x002c, 0x002c, 0x0000,
  43         0x0032, 0x0000, 0x0000, 0x0000,
  44         0x0000, 0x0000, 0x0000, 0x0000,
  45         0x0038, 0x000b, 0x0032, 0x0000,
  46         0x0008, 0x000c, 0x0093, 0x00e9,
  47         0x0000, 0x0000, 0x0000, 0x0000,
  48         0x0003, 0x0010, 0x0000, 0x0000,
  49         0x0000, 0x0002, 0x0001, 0x0000,
  50         0x0000, 0x0000, 0x0039, 0x0000,
  51         0x0001,
  52 };
  53
  54 #define WM8510_POWER1_BIASEN  0x08
  55 #define WM8510_POWER1_BUFIOEN 0x10
  56
  57 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0)
  58
  59 /* codec private data */
  60 struct wm8510_priv {
  61         enum snd_soc_control_type control_type;
  62 };
  63
  64 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
  65 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  66 static const char *wm8510_alc[] = { "ALC", "Limiter" };
  67
  68 static const struct soc_enum wm8510_enum[] = {
  69         SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
  70         SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
  71         SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
  72         SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
  73 };
  74
  75 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
  76
  77 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
  78
  79 SOC_ENUM("DAC Companding", wm8510_enum[1]),
  80 SOC_ENUM("ADC Companding", wm8510_enum[0]),
  81
  82 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
  83 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
  84
  85 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
  86
  87 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
  88 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
  89 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
  90
  91 SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
  92
  93 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
  94 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
  95 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
  96
  97 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
  98 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
  99
 100 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
 101 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
 102 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
 103
 104 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
 105 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
 106 SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
 107
 108 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
 109 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
 110 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
 111
 112 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
 113 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
 114
 115 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
 116 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
 117
 118 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
 119 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
 120 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
 121 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
 122
 123 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
 124 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
 125 };
 126
 127 /* Speaker Output Mixer */
 128 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
 129 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
 130 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
 131 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
 132 };
 133
 134 /* Mono Output Mixer */
 135 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
 136 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
 137 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
 138 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
 139 };
 140
 141 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
 142 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 1),
 143 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
 144 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
 145 };
 146
 147 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
 148 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
 149 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
 150 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
 151 };
 152
 153 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
 154 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
 155         &wm8510_speaker_mixer_controls[0],
 156         ARRAY_SIZE(wm8510_speaker_mixer_controls)),
 157 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
 158         &wm8510_mono_mixer_controls[0],
 159         ARRAY_SIZE(wm8510_mono_mixer_controls)),
 160 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
 161 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
 162 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
 163 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
 164 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
 165 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
 166
 167 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
 168                    &wm8510_micpga_controls[0],
 169                    ARRAY_SIZE(wm8510_micpga_controls)),
 170 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
 171         &wm8510_boost_controls[0],
 172         ARRAY_SIZE(wm8510_boost_controls)),
 173
 174 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
 175
 176 SND_SOC_DAPM_INPUT("MICN"),
 177 SND_SOC_DAPM_INPUT("MICP"),
 178 SND_SOC_DAPM_INPUT("AUX"),
 179 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 180 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 181 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 182 };
 183
 184 static const struct snd_soc_dapm_route wm8510_dapm_routes[] = {
 185         /* Mono output mixer */
 186         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 187         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 188         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 189
 190         /* Speaker output mixer */
 191         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 192         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 193         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 194
 195         /* Outputs */
 196         {"Mono Out", NULL, "Mono Mixer"},
 197         {"MONOOUT", NULL, "Mono Out"},
 198         {"SpkN Out", NULL, "Speaker Mixer"},
 199         {"SpkP Out", NULL, "Speaker Mixer"},
 200         {"SPKOUTN", NULL, "SpkN Out"},
 201         {"SPKOUTP", NULL, "SpkP Out"},
 202
 203         /* Microphone PGA */
 204         {"Mic PGA", "MICN Switch", "MICN"},
 205         {"Mic PGA", "MICP Switch", "MICP"},
 206         { "Mic PGA", "AUX Switch", "Aux Input" },
 207
 208         /* Boost Mixer */
 209         {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
 210         {"Boost Mixer", "Mic Volume", "MICP"},
 211         {"Boost Mixer", "Aux Volume", "Aux Input"},
 212
 213         {"ADC", NULL, "Boost Mixer"},
 214 };
 215
 216 struct pll_ {
 217         unsigned int pre_div:4; /* prescale - 1 */
 218         unsigned int n:4;
 219         unsigned int k;
 220 };
 221
 222 static struct pll_ pll_div;
 223
 224 /* The size in bits of the pll divide multiplied by 10
 225  * to allow rounding later */
 226 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 227
 228 static void pll_factors(unsigned int target, unsigned int source)
 229 {
 230         unsigned long long Kpart;
 231         unsigned int K, Ndiv, Nmod;
 232
 233         Ndiv = target / source;
 234         if (Ndiv < 6) {
 235                 source >>= 1;
 236                 pll_div.pre_div = 1;
 237                 Ndiv = target / source;
 238         } else
 239                 pll_div.pre_div = 0;
 240
 241         if ((Ndiv < 6) || (Ndiv > 12))
 242                 printk(KERN_WARNING
 243                         "WM8510 N value %u outwith recommended range!d\n",
 244                         Ndiv);
 245
 246         pll_div.n = Ndiv;
 247         Nmod = target % source;
 248         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 249
 250         do_div(Kpart, source);
 251
 252         K = Kpart & 0xFFFFFFFF;
 253
 254         /* Check if we need to round */
 255         if ((K % 10) >= 5)
 256                 K += 5;
 257
 258         /* Move down to proper range now rounding is done */
 259         K /= 10;
 260
 261         pll_div.k = K;
 262 }
 263
 264 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 265                 int source, unsigned int freq_in, unsigned int freq_out)
 266 {
 267         struct snd_soc_codec *codec = codec_dai->codec;
 268         u16 reg;
 269
 270         if (freq_in == 0 || freq_out == 0) {
 271                 /* Clock CODEC directly from MCLK */
 272                 reg = snd_soc_read(codec, WM8510_CLOCK);
 273                 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff);
 274
 275                 /* Turn off PLL */
 276                 reg = snd_soc_read(codec, WM8510_POWER1);
 277                 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df);
 278                 return 0;
 279         }
 280
 281         pll_factors(freq_out*4, freq_in);
 282
 283         snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 284         snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18);
 285         snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
 286         snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
 287         reg = snd_soc_read(codec, WM8510_POWER1);
 288         snd_soc_write(codec, WM8510_POWER1, reg | 0x020);
 289
 290         /* Run CODEC from PLL instead of MCLK */
 291         reg = snd_soc_read(codec, WM8510_CLOCK);
 292         snd_soc_write(codec, WM8510_CLOCK, reg | 0x100);
 293
 294         return 0;
 295 }
 296
 297 /*
 298  * Configure WM8510 clock dividers.
 299  */
 300 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 301                 int div_id, int div)
 302 {
 303         struct snd_soc_codec *codec = codec_dai->codec;
 304         u16 reg;
 305
 306         switch (div_id) {
 307         case WM8510_OPCLKDIV:
 308                 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf;
 309                 snd_soc_write(codec, WM8510_GPIO, reg | div);
 310                 break;
 311         case WM8510_MCLKDIV:
 312                 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f;
 313                 snd_soc_write(codec, WM8510_CLOCK, reg | div);
 314                 break;
 315         case WM8510_ADCCLK:
 316                 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7;
 317                 snd_soc_write(codec, WM8510_ADC, reg | div);
 318                 break;
 319         case WM8510_DACCLK:
 320                 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7;
 321                 snd_soc_write(codec, WM8510_DAC, reg | div);
 322                 break;
 323         case WM8510_BCLKDIV:
 324                 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3;
 325                 snd_soc_write(codec, WM8510_CLOCK, reg | div);
 326                 break;
 327         default:
 328                 return -EINVAL;
 329         }
 330
 331         return 0;
 332 }
 333
 334 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
 335                 unsigned int fmt)
 336 {
 337         struct snd_soc_codec *codec = codec_dai->codec;
 338         u16 iface = 0;
 339         u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe;
 340
 341         /* set master/slave audio interface */
 342         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 343         case SND_SOC_DAIFMT_CBM_CFM:
 344                 clk |= 0x0001;
 345                 break;
 346         case SND_SOC_DAIFMT_CBS_CFS:
 347                 break;
 348         default:
 349                 return -EINVAL;
 350         }
 351
 352         /* interface format */
 353         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 354         case SND_SOC_DAIFMT_I2S:
 355                 iface |= 0x0010;
 356                 break;
 357         case SND_SOC_DAIFMT_RIGHT_J:
 358                 break;
 359         case SND_SOC_DAIFMT_LEFT_J:
 360                 iface |= 0x0008;
 361                 break;
 362         case SND_SOC_DAIFMT_DSP_A:
 363                 iface |= 0x00018;
 364                 break;
 365         default:
 366                 return -EINVAL;
 367         }
 368
 369         /* clock inversion */
 370         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 371         case SND_SOC_DAIFMT_NB_NF:
 372                 break;
 373         case SND_SOC_DAIFMT_IB_IF:
 374                 iface |= 0x0180;
 375                 break;
 376         case SND_SOC_DAIFMT_IB_NF:
 377                 iface |= 0x0100;
 378                 break;
 379         case SND_SOC_DAIFMT_NB_IF:
 380                 iface |= 0x0080;
 381                 break;
 382         default:
 383                 return -EINVAL;
 384         }
 385
 386         snd_soc_write(codec, WM8510_IFACE, iface);
 387         snd_soc_write(codec, WM8510_CLOCK, clk);
 388         return 0;
 389 }
 390
 391 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
 392                                 struct snd_pcm_hw_params *params,
 393                                 struct snd_soc_dai *dai)
 394 {
 395         struct snd_soc_codec *codec = dai->codec;
 396         u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f;
 397         u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1;
 398
 399         /* bit size */
 400         switch (params_format(params)) {
 401         case SNDRV_PCM_FORMAT_S16_LE:
 402                 break;
 403         case SNDRV_PCM_FORMAT_S20_3LE:
 404                 iface |= 0x0020;
 405                 break;
 406         case SNDRV_PCM_FORMAT_S24_LE:
 407                 iface |= 0x0040;
 408                 break;
 409         case SNDRV_PCM_FORMAT_S32_LE:
 410                 iface |= 0x0060;
 411                 break;
 412         }
 413
 414         /* filter coefficient */
 415         switch (params_rate(params)) {
 416         case 8000:
 417                 adn |= 0x5 << 1;
 418                 break;
 419         case 11025:
 420                 adn |= 0x4 << 1;
 421                 break;
 422         case 16000:
 423                 adn |= 0x3 << 1;
 424                 break;
 425         case 22050:
 426                 adn |= 0x2 << 1;
 427                 break;
 428         case 32000:
 429                 adn |= 0x1 << 1;
 430                 break;
 431         case 44100:
 432         case 48000:
 433                 break;
 434         }
 435
 436         snd_soc_write(codec, WM8510_IFACE, iface);
 437         snd_soc_write(codec, WM8510_ADD, adn);
 438         return 0;
 439 }
 440
 441 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
 442 {
 443         struct snd_soc_codec *codec = dai->codec;
 444         u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf;
 445
 446         if (mute)
 447                 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40);
 448         else
 449                 snd_soc_write(codec, WM8510_DAC, mute_reg);
 450         return 0;
 451 }
 452
 453 /* liam need to make this lower power with dapm */
 454 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
 455         enum snd_soc_bias_level level)
 456 {
 457         u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3;
 458
 459         switch (level) {
 460         case SND_SOC_BIAS_ON:
 461         case SND_SOC_BIAS_PREPARE:
 462                 power1 |= 0x1;  /* VMID 50k */
 463                 snd_soc_write(codec, WM8510_POWER1, power1);
 464                 break;
 465
 466         case SND_SOC_BIAS_STANDBY:
 467                 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
 468
 469                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 470                         snd_soc_cache_sync(codec);
 471
 472                         /* Initial cap charge at VMID 5k */
 473                         snd_soc_write(codec, WM8510_POWER1, power1 | 0x3);
 474                         mdelay(100);
 475                 }
 476
 477                 power1 |= 0x2;  /* VMID 500k */
 478                 snd_soc_write(codec, WM8510_POWER1, power1);
 479                 break;
 480
 481         case SND_SOC_BIAS_OFF:
 482                 snd_soc_write(codec, WM8510_POWER1, 0);
 483                 snd_soc_write(codec, WM8510_POWER2, 0);
 484                 snd_soc_write(codec, WM8510_POWER3, 0);
 485                 break;
 486         }
 487
 488         codec->dapm.bias_level = level;
 489         return 0;
 490 }
 491
 492 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 493                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 494                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 495
 496 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 497         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 498
 499 static const struct snd_soc_dai_ops wm8510_dai_ops = {
 500         .hw_params      = wm8510_pcm_hw_params,
 501         .digital_mute   = wm8510_mute,
 502         .set_fmt        = wm8510_set_dai_fmt,
 503         .set_clkdiv     = wm8510_set_dai_clkdiv,
 504         .set_pll        = wm8510_set_dai_pll,
 505 };
 506
 507 static struct snd_soc_dai_driver wm8510_dai = {
 508         .name = "wm8510-hifi",
 509         .playback = {
 510                 .stream_name = "Playback",
 511                 .channels_min = 2,
 512                 .channels_max = 2,
 513                 .rates = WM8510_RATES,
 514                 .formats = WM8510_FORMATS,},
 515         .capture = {
 516                 .stream_name = "Capture",
 517                 .channels_min = 2,
 518                 .channels_max = 2,
 519                 .rates = WM8510_RATES,
 520                 .formats = WM8510_FORMATS,},
 521         .ops = &wm8510_dai_ops,
 522         .symmetric_rates = 1,
 523 };
 524
 525 static int wm8510_suspend(struct snd_soc_codec *codec)
 526 {
 527         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 528         return 0;
 529 }
 530
 531 static int wm8510_resume(struct snd_soc_codec *codec)
 532 {
 533         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 534         return 0;
 535 }
 536
 537 static int wm8510_probe(struct snd_soc_codec *codec)
 538 {
 539         struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
 540         int ret;
 541
 542         ret = snd_soc_codec_set_cache_io(codec, 7, 9,  wm8510->control_type);
 543         if (ret < 0) {
 544                 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret);
 545                 return ret;
 546         }
 547
 548         wm8510_reset(codec);
 549
 550         /* power on device */
 551         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 552
 553         return ret;
 554 }
 555
 556 /* power down chip */
 557 static int wm8510_remove(struct snd_soc_codec *codec)
 558 {
 559         struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
 560
 561         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 562         kfree(wm8510);
 563         return 0;
 564 }
 565
 566 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = {
 567         .probe =        wm8510_probe,
 568         .remove =       wm8510_remove,
 569         .suspend =      wm8510_suspend,
 570         .resume =       wm8510_resume,
 571         .set_bias_level = wm8510_set_bias_level,
 572         .reg_cache_size = ARRAY_SIZE(wm8510_reg),
 573         .reg_word_size = sizeof(u16),
 574         .reg_cache_default =wm8510_reg,
 575
 576         .controls = wm8510_snd_controls,
 577         .num_controls = ARRAY_SIZE(wm8510_snd_controls),
 578         .dapm_widgets = wm8510_dapm_widgets,
 579         .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets),
 580         .dapm_routes = wm8510_dapm_routes,
 581         .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes),
 582 };
 583
 584 static const struct of_device_id wm8510_of_match[] = {
 585         { .compatible = "wlf,wm8510" },
 586         { },
 587 };
 588
 589 #if defined(CONFIG_SPI_MASTER)
 590 static int __devinit wm8510_spi_probe(struct spi_device *spi)
 591 {
 592         struct wm8510_priv *wm8510;
 593         int ret;
 594
 595         wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
 596         if (wm8510 == NULL)
 597                 return -ENOMEM;
 598
 599         wm8510->control_type = SND_SOC_SPI;
 600         spi_set_drvdata(spi, wm8510);
 601
 602         ret = snd_soc_register_codec(&spi->dev,
 603                         &soc_codec_dev_wm8510, &wm8510_dai, 1);
 604         if (ret < 0)
 605                 kfree(wm8510);
 606         return ret;
 607 }
 608
 609 static int __devexit wm8510_spi_remove(struct spi_device *spi)
 610 {
 611         snd_soc_unregister_codec(&spi->dev);
 612         return 0;
 613 }
 614
 615 static struct spi_driver wm8510_spi_driver = {
 616         .driver = {
 617                 .name   = "wm8510",
 618                 .owner  = THIS_MODULE,
 619                 .of_match_table = wm8510_of_match,
 620         },
 621         .probe          = wm8510_spi_probe,
 622         .remove         = __devexit_p(wm8510_spi_remove),
 623 };
 624 #endif /* CONFIG_SPI_MASTER */
 625
 626 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 627 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c,
 628                                       const struct i2c_device_id *id)
 629 {
 630         struct wm8510_priv *wm8510;
 631         int ret;
 632
 633         wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
 634         if (wm8510 == NULL)
 635                 return -ENOMEM;
 636
 637         i2c_set_clientdata(i2c, wm8510);
 638         wm8510->control_type = SND_SOC_I2C;
 639
 640         ret =  snd_soc_register_codec(&i2c->dev,
 641                         &soc_codec_dev_wm8510, &wm8510_dai, 1);
 642         if (ret < 0)
 643                 kfree(wm8510);
 644         return ret;
 645 }
 646
 647 static __devexit int wm8510_i2c_remove(struct i2c_client *client)
 648 {
 649         snd_soc_unregister_codec(&client->dev);
 650         return 0;
 651 }
 652
 653 static const struct i2c_device_id wm8510_i2c_id[] = {
 654         { "wm8510", 0 },
 655         { }
 656 };
 657 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
 658
 659 static struct i2c_driver wm8510_i2c_driver = {
 660         .driver = {
 661                 .name = "wm8510",
 662                 .owner = THIS_MODULE,
 663                 .of_match_table = wm8510_of_match,
 664         },
 665         .probe =    wm8510_i2c_probe,
 666         .remove =   __devexit_p(wm8510_i2c_remove),
 667         .id_table = wm8510_i2c_id,
 668 };
 669 #endif
 670
 671 static int __init wm8510_modinit(void)
 672 {
 673         int ret = 0;
 674 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 675         ret = i2c_add_driver(&wm8510_i2c_driver);
 676         if (ret != 0) {
 677                 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n",
 678                        ret);
 679         }
 680 #endif
 681 #if defined(CONFIG_SPI_MASTER)
 682         ret = spi_register_driver(&wm8510_spi_driver);
 683         if (ret != 0) {
 684                 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n",
 685                        ret);
 686         }
 687 #endif
 688         return ret;
 689 }
 690 module_init(wm8510_modinit);
 691
 692 static void __exit wm8510_exit(void)
 693 {
 694 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 695         i2c_del_driver(&wm8510_i2c_driver);
 696 #endif
 697 #if defined(CONFIG_SPI_MASTER)
 698         spi_unregister_driver(&wm8510_spi_driver);
 699 #endif
 700 }
 701 module_exit(wm8510_exit);
 702
 703 MODULE_DESCRIPTION("ASoC WM8510 driver");
 704 MODULE_AUTHOR("Liam Girdwood");
 705 MODULE_LICENSE("GPL");