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/platform_device.h>
  21 #include <linux/spi/spi.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include <sound/soc-dapm.h>
  27 #include <sound/initval.h>
  28
  29 #include "wm8510.h"
  30
  31 #define WM8510_VERSION "0.6"
  32
  33 struct snd_soc_codec_device soc_codec_dev_wm8510;
  34
  35 /*
  36  * wm8510 register cache
  37  * We can't read the WM8510 register space when we are
  38  * using 2 wire for device control, so we cache them instead.
  39  */
  40 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
  41         0x0000, 0x0000, 0x0000, 0x0000,
  42         0x0050, 0x0000, 0x0140, 0x0000,
  43         0x0000, 0x0000, 0x0000, 0x00ff,
  44         0x0000, 0x0000, 0x0100, 0x00ff,
  45         0x0000, 0x0000, 0x012c, 0x002c,
  46         0x002c, 0x002c, 0x002c, 0x0000,
  47         0x0032, 0x0000, 0x0000, 0x0000,
  48         0x0000, 0x0000, 0x0000, 0x0000,
  49         0x0038, 0x000b, 0x0032, 0x0000,
  50         0x0008, 0x000c, 0x0093, 0x00e9,
  51         0x0000, 0x0000, 0x0000, 0x0000,
  52         0x0003, 0x0010, 0x0000, 0x0000,
  53         0x0000, 0x0002, 0x0001, 0x0000,
  54         0x0000, 0x0000, 0x0039, 0x0000,
  55         0x0001,
  56 };
  57
  58 #define WM8510_POWER1_BIASEN  0x08
  59 #define WM8510_POWER1_BUFIOEN 0x10
  60
  61 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0)
  62
  63 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
  64 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  65 static const char *wm8510_alc[] = { "ALC", "Limiter" };
  66
  67 static const struct soc_enum wm8510_enum[] = {
  68         SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
  69         SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
  70         SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
  71         SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
  72 };
  73
  74 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
  75
  76 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
  77
  78 SOC_ENUM("DAC Companding", wm8510_enum[1]),
  79 SOC_ENUM("ADC Companding", wm8510_enum[0]),
  80
  81 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
  82 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
  83
  84 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
  85
  86 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
  87 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
  88 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
  89
  90 SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
  91
  92 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
  93 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
  94 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
  95
  96 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
  97 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
  98
  99 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
 100 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
 101 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
 102
 103 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
 104 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
 105 SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
 106
 107 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
 108 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
 109 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
 110
 111 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
 112 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
 113
 114 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
 115 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
 116
 117 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
 118 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
 119 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
 120 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
 121
 122 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
 123 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
 124 };
 125
 126 /* Speaker Output Mixer */
 127 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
 128 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
 129 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
 130 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
 131 };
 132
 133 /* Mono Output Mixer */
 134 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
 135 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
 136 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
 137 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
 138 };
 139
 140 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
 141 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 1),
 142 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
 143 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
 144 };
 145
 146 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
 147 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
 148 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
 149 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
 150 };
 151
 152 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
 153 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
 154         &wm8510_speaker_mixer_controls[0],
 155         ARRAY_SIZE(wm8510_speaker_mixer_controls)),
 156 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
 157         &wm8510_mono_mixer_controls[0],
 158         ARRAY_SIZE(wm8510_mono_mixer_controls)),
 159 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
 160 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
 161 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
 162 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
 163 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
 164 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
 165
 166 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
 167                    &wm8510_micpga_controls[0],
 168                    ARRAY_SIZE(wm8510_micpga_controls)),
 169 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
 170         &wm8510_boost_controls[0],
 171         ARRAY_SIZE(wm8510_boost_controls)),
 172
 173 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
 174
 175 SND_SOC_DAPM_INPUT("MICN"),
 176 SND_SOC_DAPM_INPUT("MICP"),
 177 SND_SOC_DAPM_INPUT("AUX"),
 178 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 179 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 180 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 181 };
 182
 183 static const struct snd_soc_dapm_route audio_map[] = {
 184         /* Mono output mixer */
 185         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 186         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 187         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 188
 189         /* Speaker output mixer */
 190         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 191         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 192         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 193
 194         /* Outputs */
 195         {"Mono Out", NULL, "Mono Mixer"},
 196         {"MONOOUT", NULL, "Mono Out"},
 197         {"SpkN Out", NULL, "Speaker Mixer"},
 198         {"SpkP Out", NULL, "Speaker Mixer"},
 199         {"SPKOUTN", NULL, "SpkN Out"},
 200         {"SPKOUTP", NULL, "SpkP Out"},
 201
 202         /* Microphone PGA */
 203         {"Mic PGA", "MICN Switch", "MICN"},
 204         {"Mic PGA", "MICP Switch", "MICP"},
 205         { "Mic PGA", "AUX Switch", "Aux Input" },
 206
 207         /* Boost Mixer */
 208         {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
 209         {"Boost Mixer", "Mic Volume", "MICP"},
 210         {"Boost Mixer", "Aux Volume", "Aux Input"},
 211
 212         {"ADC", NULL, "Boost Mixer"},
 213 };
 214
 215 static int wm8510_add_widgets(struct snd_soc_codec *codec)
 216 {
 217         snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
 218                                   ARRAY_SIZE(wm8510_dapm_widgets));
 219
 220         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 221
 222         snd_soc_dapm_new_widgets(codec);
 223         return 0;
 224 }
 225
 226 struct pll_ {
 227         unsigned int pre_div:4; /* prescale - 1 */
 228         unsigned int n:4;
 229         unsigned int k;
 230 };
 231
 232 static struct pll_ pll_div;
 233
 234 /* The size in bits of the pll divide multiplied by 10
 235  * to allow rounding later */
 236 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 237
 238 static void pll_factors(unsigned int target, unsigned int source)
 239 {
 240         unsigned long long Kpart;
 241         unsigned int K, Ndiv, Nmod;
 242
 243         Ndiv = target / source;
 244         if (Ndiv < 6) {
 245                 source >>= 1;
 246                 pll_div.pre_div = 1;
 247                 Ndiv = target / source;
 248         } else
 249                 pll_div.pre_div = 0;
 250
 251         if ((Ndiv < 6) || (Ndiv > 12))
 252                 printk(KERN_WARNING
 253                         "WM8510 N value %u outwith recommended range!d\n",
 254                         Ndiv);
 255
 256         pll_div.n = Ndiv;
 257         Nmod = target % source;
 258         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 259
 260         do_div(Kpart, source);
 261
 262         K = Kpart & 0xFFFFFFFF;
 263
 264         /* Check if we need to round */
 265         if ((K % 10) >= 5)
 266                 K += 5;
 267
 268         /* Move down to proper range now rounding is done */
 269         K /= 10;
 270
 271         pll_div.k = K;
 272 }
 273
 274 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai,
 275                 int pll_id, unsigned int freq_in, unsigned int freq_out)
 276 {
 277         struct snd_soc_codec *codec = codec_dai->codec;
 278         u16 reg;
 279
 280         if (freq_in == 0 || freq_out == 0) {
 281                 /* Clock CODEC directly from MCLK */
 282                 reg = snd_soc_read(codec, WM8510_CLOCK);
 283                 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff);
 284
 285                 /* Turn off PLL */
 286                 reg = snd_soc_read(codec, WM8510_POWER1);
 287                 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df);
 288                 return 0;
 289         }
 290
 291         pll_factors(freq_out*4, freq_in);
 292
 293         snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 294         snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18);
 295         snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
 296         snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
 297         reg = snd_soc_read(codec, WM8510_POWER1);
 298         snd_soc_write(codec, WM8510_POWER1, reg | 0x020);
 299
 300         /* Run CODEC from PLL instead of MCLK */
 301         reg = snd_soc_read(codec, WM8510_CLOCK);
 302         snd_soc_write(codec, WM8510_CLOCK, reg | 0x100);
 303
 304         return 0;
 305 }
 306
 307 /*
 308  * Configure WM8510 clock dividers.
 309  */
 310 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 311                 int div_id, int div)
 312 {
 313         struct snd_soc_codec *codec = codec_dai->codec;
 314         u16 reg;
 315
 316         switch (div_id) {
 317         case WM8510_OPCLKDIV:
 318                 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf;
 319                 snd_soc_write(codec, WM8510_GPIO, reg | div);
 320                 break;
 321         case WM8510_MCLKDIV:
 322                 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f;
 323                 snd_soc_write(codec, WM8510_CLOCK, reg | div);
 324                 break;
 325         case WM8510_ADCCLK:
 326                 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7;
 327                 snd_soc_write(codec, WM8510_ADC, reg | div);
 328                 break;
 329         case WM8510_DACCLK:
 330                 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7;
 331                 snd_soc_write(codec, WM8510_DAC, reg | div);
 332                 break;
 333         case WM8510_BCLKDIV:
 334                 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3;
 335                 snd_soc_write(codec, WM8510_CLOCK, reg | div);
 336                 break;
 337         default:
 338                 return -EINVAL;
 339         }
 340
 341         return 0;
 342 }
 343
 344 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
 345                 unsigned int fmt)
 346 {
 347         struct snd_soc_codec *codec = codec_dai->codec;
 348         u16 iface = 0;
 349         u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe;
 350
 351         /* set master/slave audio interface */
 352         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 353         case SND_SOC_DAIFMT_CBM_CFM:
 354                 clk |= 0x0001;
 355                 break;
 356         case SND_SOC_DAIFMT_CBS_CFS:
 357                 break;
 358         default:
 359                 return -EINVAL;
 360         }
 361
 362         /* interface format */
 363         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 364         case SND_SOC_DAIFMT_I2S:
 365                 iface |= 0x0010;
 366                 break;
 367         case SND_SOC_DAIFMT_RIGHT_J:
 368                 break;
 369         case SND_SOC_DAIFMT_LEFT_J:
 370                 iface |= 0x0008;
 371                 break;
 372         case SND_SOC_DAIFMT_DSP_A:
 373                 iface |= 0x00018;
 374                 break;
 375         default:
 376                 return -EINVAL;
 377         }
 378
 379         /* clock inversion */
 380         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 381         case SND_SOC_DAIFMT_NB_NF:
 382                 break;
 383         case SND_SOC_DAIFMT_IB_IF:
 384                 iface |= 0x0180;
 385                 break;
 386         case SND_SOC_DAIFMT_IB_NF:
 387                 iface |= 0x0100;
 388                 break;
 389         case SND_SOC_DAIFMT_NB_IF:
 390                 iface |= 0x0080;
 391                 break;
 392         default:
 393                 return -EINVAL;
 394         }
 395
 396         snd_soc_write(codec, WM8510_IFACE, iface);
 397         snd_soc_write(codec, WM8510_CLOCK, clk);
 398         return 0;
 399 }
 400
 401 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
 402                                 struct snd_pcm_hw_params *params,
 403                                 struct snd_soc_dai *dai)
 404 {
 405         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 406         struct snd_soc_device *socdev = rtd->socdev;
 407         struct snd_soc_codec *codec = socdev->card->codec;
 408         u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f;
 409         u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1;
 410
 411         /* bit size */
 412         switch (params_format(params)) {
 413         case SNDRV_PCM_FORMAT_S16_LE:
 414                 break;
 415         case SNDRV_PCM_FORMAT_S20_3LE:
 416                 iface |= 0x0020;
 417                 break;
 418         case SNDRV_PCM_FORMAT_S24_LE:
 419                 iface |= 0x0040;
 420                 break;
 421         case SNDRV_PCM_FORMAT_S32_LE:
 422                 iface |= 0x0060;
 423                 break;
 424         }
 425
 426         /* filter coefficient */
 427         switch (params_rate(params)) {
 428         case SNDRV_PCM_RATE_8000:
 429                 adn |= 0x5 << 1;
 430                 break;
 431         case SNDRV_PCM_RATE_11025:
 432                 adn |= 0x4 << 1;
 433                 break;
 434         case SNDRV_PCM_RATE_16000:
 435                 adn |= 0x3 << 1;
 436                 break;
 437         case SNDRV_PCM_RATE_22050:
 438                 adn |= 0x2 << 1;
 439                 break;
 440         case SNDRV_PCM_RATE_32000:
 441                 adn |= 0x1 << 1;
 442                 break;
 443         case SNDRV_PCM_RATE_44100:
 444         case SNDRV_PCM_RATE_48000:
 445                 break;
 446         }
 447
 448         snd_soc_write(codec, WM8510_IFACE, iface);
 449         snd_soc_write(codec, WM8510_ADD, adn);
 450         return 0;
 451 }
 452
 453 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
 454 {
 455         struct snd_soc_codec *codec = dai->codec;
 456         u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf;
 457
 458         if (mute)
 459                 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40);
 460         else
 461                 snd_soc_write(codec, WM8510_DAC, mute_reg);
 462         return 0;
 463 }
 464
 465 /* liam need to make this lower power with dapm */
 466 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
 467         enum snd_soc_bias_level level)
 468 {
 469         u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3;
 470
 471         switch (level) {
 472         case SND_SOC_BIAS_ON:
 473         case SND_SOC_BIAS_PREPARE:
 474                 power1 |= 0x1;  /* VMID 50k */
 475                 snd_soc_write(codec, WM8510_POWER1, power1);
 476                 break;
 477
 478         case SND_SOC_BIAS_STANDBY:
 479                 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
 480
 481                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 482                         /* Initial cap charge at VMID 5k */
 483                         snd_soc_write(codec, WM8510_POWER1, power1 | 0x3);
 484                         mdelay(100);
 485                 }
 486
 487                 power1 |= 0x2;  /* VMID 500k */
 488                 snd_soc_write(codec, WM8510_POWER1, power1);
 489                 break;
 490
 491         case SND_SOC_BIAS_OFF:
 492                 snd_soc_write(codec, WM8510_POWER1, 0);
 493                 snd_soc_write(codec, WM8510_POWER2, 0);
 494                 snd_soc_write(codec, WM8510_POWER3, 0);
 495                 break;
 496         }
 497
 498         codec->bias_level = level;
 499         return 0;
 500 }
 501
 502 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 503                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 504                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 505
 506 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 507         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 508
 509 static struct snd_soc_dai_ops wm8510_dai_ops = {
 510         .hw_params      = wm8510_pcm_hw_params,
 511         .digital_mute   = wm8510_mute,
 512         .set_fmt        = wm8510_set_dai_fmt,
 513         .set_clkdiv     = wm8510_set_dai_clkdiv,
 514         .set_pll        = wm8510_set_dai_pll,
 515 };
 516
 517 struct snd_soc_dai wm8510_dai = {
 518         .name = "WM8510 HiFi",
 519         .playback = {
 520                 .stream_name = "Playback",
 521                 .channels_min = 2,
 522                 .channels_max = 2,
 523                 .rates = WM8510_RATES,
 524                 .formats = WM8510_FORMATS,},
 525         .capture = {
 526                 .stream_name = "Capture",
 527                 .channels_min = 2,
 528                 .channels_max = 2,
 529                 .rates = WM8510_RATES,
 530                 .formats = WM8510_FORMATS,},
 531         .ops = &wm8510_dai_ops,
 532         .symmetric_rates = 1,
 533 };
 534 EXPORT_SYMBOL_GPL(wm8510_dai);
 535
 536 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
 537 {
 538         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 539         struct snd_soc_codec *codec = socdev->card->codec;
 540
 541         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 542         return 0;
 543 }
 544
 545 static int wm8510_resume(struct platform_device *pdev)
 546 {
 547         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 548         struct snd_soc_codec *codec = socdev->card->codec;
 549         int i;
 550         u8 data[2];
 551         u16 *cache = codec->reg_cache;
 552
 553         /* Sync reg_cache with the hardware */
 554         for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
 555                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 556                 data[1] = cache[i] & 0x00ff;
 557                 codec->hw_write(codec->control_data, data, 2);
 558         }
 559         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 560         wm8510_set_bias_level(codec, codec->suspend_bias_level);
 561         return 0;
 562 }
 563
 564 /*
 565  * initialise the WM8510 driver
 566  * register the mixer and dsp interfaces with the kernel
 567  */
 568 static int wm8510_init(struct snd_soc_device *socdev,
 569                        enum snd_soc_control_type control)
 570 {
 571         struct snd_soc_codec *codec = socdev->card->codec;
 572         int ret = 0;
 573
 574         codec->name = "WM8510";
 575         codec->owner = THIS_MODULE;
 576         codec->set_bias_level = wm8510_set_bias_level;
 577         codec->dai = &wm8510_dai;
 578         codec->num_dai = 1;
 579         codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
 580         codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
 581
 582         if (codec->reg_cache == NULL)
 583                 return -ENOMEM;
 584
 585         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 586         if (ret < 0) {
 587                 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n",
 588                        ret);
 589                 goto err;
 590         }
 591
 592         wm8510_reset(codec);
 593
 594         /* register pcms */
 595         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 596         if (ret < 0) {
 597                 printk(KERN_ERR "wm8510: failed to create pcms\n");
 598                 goto err;
 599         }
 600
 601         /* power on device */
 602         codec->bias_level = SND_SOC_BIAS_OFF;
 603         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 604         snd_soc_add_controls(codec, wm8510_snd_controls,
 605                                 ARRAY_SIZE(wm8510_snd_controls));
 606         wm8510_add_widgets(codec);
 607         ret = snd_soc_init_card(socdev);
 608         if (ret < 0) {
 609                 printk(KERN_ERR "wm8510: failed to register card\n");
 610                 goto card_err;
 611         }
 612         return ret;
 613
 614 card_err:
 615         snd_soc_free_pcms(socdev);
 616         snd_soc_dapm_free(socdev);
 617 err:
 618         kfree(codec->reg_cache);
 619         return ret;
 620 }
 621
 622 static struct snd_soc_device *wm8510_socdev;
 623
 624 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 625
 626 /*
 627  * WM8510 2 wire address is 0x1a
 628  */
 629
 630 static int wm8510_i2c_probe(struct i2c_client *i2c,
 631                             const struct i2c_device_id *id)
 632 {
 633         struct snd_soc_device *socdev = wm8510_socdev;
 634         struct snd_soc_codec *codec = socdev->card->codec;
 635         int ret;
 636
 637         i2c_set_clientdata(i2c, codec);
 638         codec->control_data = i2c;
 639
 640         ret = wm8510_init(socdev, SND_SOC_I2C);
 641         if (ret < 0)
 642                 pr_err("failed to initialise WM8510\n");
 643
 644         return ret;
 645 }
 646
 647 static int wm8510_i2c_remove(struct i2c_client *client)
 648 {
 649         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 650         kfree(codec->reg_cache);
 651         return 0;
 652 }
 653
 654 static const struct i2c_device_id wm8510_i2c_id[] = {
 655         { "wm8510", 0 },
 656         { }
 657 };
 658 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
 659
 660 static struct i2c_driver wm8510_i2c_driver = {
 661         .driver = {
 662                 .name = "WM8510 I2C Codec",
 663                 .owner = THIS_MODULE,
 664         },
 665         .probe =    wm8510_i2c_probe,
 666         .remove =   wm8510_i2c_remove,
 667         .id_table = wm8510_i2c_id,
 668 };
 669
 670 static int wm8510_add_i2c_device(struct platform_device *pdev,
 671                                  const struct wm8510_setup_data *setup)
 672 {
 673         struct i2c_board_info info;
 674         struct i2c_adapter *adapter;
 675         struct i2c_client *client;
 676         int ret;
 677
 678         ret = i2c_add_driver(&wm8510_i2c_driver);
 679         if (ret != 0) {
 680                 dev_err(&pdev->dev, "can't add i2c driver\n");
 681                 return ret;
 682         }
 683
 684         memset(&info, 0, sizeof(struct i2c_board_info));
 685         info.addr = setup->i2c_address;
 686         strlcpy(info.type, "wm8510", I2C_NAME_SIZE);
 687
 688         adapter = i2c_get_adapter(setup->i2c_bus);
 689         if (!adapter) {
 690                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 691                         setup->i2c_bus);
 692                 goto err_driver;
 693         }
 694
 695         client = i2c_new_device(adapter, &info);
 696         i2c_put_adapter(adapter);
 697         if (!client) {
 698                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 699                         (unsigned int)info.addr);
 700                 goto err_driver;
 701         }
 702
 703         return 0;
 704
 705 err_driver:
 706         i2c_del_driver(&wm8510_i2c_driver);
 707         return -ENODEV;
 708 }
 709 #endif
 710
 711 #if defined(CONFIG_SPI_MASTER)
 712 static int __devinit wm8510_spi_probe(struct spi_device *spi)
 713 {
 714         struct snd_soc_device *socdev = wm8510_socdev;
 715         struct snd_soc_codec *codec = socdev->card->codec;
 716         int ret;
 717
 718         codec->control_data = spi;
 719
 720         ret = wm8510_init(socdev, SND_SOC_SPI);
 721         if (ret < 0)
 722                 dev_err(&spi->dev, "failed to initialise WM8510\n");
 723
 724         return ret;
 725 }
 726
 727 static int __devexit wm8510_spi_remove(struct spi_device *spi)
 728 {
 729         return 0;
 730 }
 731
 732 static struct spi_driver wm8510_spi_driver = {
 733         .driver = {
 734                 .name   = "wm8510",
 735                 .bus    = &spi_bus_type,
 736                 .owner  = THIS_MODULE,
 737         },
 738         .probe          = wm8510_spi_probe,
 739         .remove         = __devexit_p(wm8510_spi_remove),
 740 };
 741 #endif /* CONFIG_SPI_MASTER */
 742
 743 static int wm8510_probe(struct platform_device *pdev)
 744 {
 745         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 746         struct wm8510_setup_data *setup;
 747         struct snd_soc_codec *codec;
 748         int ret = 0;
 749
 750         pr_info("WM8510 Audio Codec %s", WM8510_VERSION);
 751
 752         setup = socdev->codec_data;
 753         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 754         if (codec == NULL)
 755                 return -ENOMEM;
 756
 757         socdev->card->codec = codec;
 758         mutex_init(&codec->mutex);
 759         INIT_LIST_HEAD(&codec->dapm_widgets);
 760         INIT_LIST_HEAD(&codec->dapm_paths);
 761
 762         wm8510_socdev = socdev;
 763 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 764         if (setup->i2c_address) {
 765                 ret = wm8510_add_i2c_device(pdev, setup);
 766         }
 767 #endif
 768 #if defined(CONFIG_SPI_MASTER)
 769         if (setup->spi) {
 770                 ret = spi_register_driver(&wm8510_spi_driver);
 771                 if (ret != 0)
 772                         printk(KERN_ERR "can't add spi driver");
 773         }
 774 #endif
 775
 776         if (ret != 0)
 777                 kfree(codec);
 778         return ret;
 779 }
 780
 781 /* power down chip */
 782 static int wm8510_remove(struct platform_device *pdev)
 783 {
 784         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 785         struct snd_soc_codec *codec = socdev->card->codec;
 786
 787         if (codec->control_data)
 788                 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 789
 790         snd_soc_free_pcms(socdev);
 791         snd_soc_dapm_free(socdev);
 792 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 793         i2c_unregister_device(codec->control_data);
 794         i2c_del_driver(&wm8510_i2c_driver);
 795 #endif
 796 #if defined(CONFIG_SPI_MASTER)
 797         spi_unregister_driver(&wm8510_spi_driver);
 798 #endif
 799         kfree(codec);
 800
 801         return 0;
 802 }
 803
 804 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
 805         .probe =        wm8510_probe,
 806         .remove =       wm8510_remove,
 807         .suspend =      wm8510_suspend,
 808         .resume =       wm8510_resume,
 809 };
 810 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
 811
 812 static int __init wm8510_modinit(void)
 813 {
 814         return snd_soc_register_dai(&wm8510_dai);
 815 }
 816 module_init(wm8510_modinit);
 817
 818 static void __exit wm8510_exit(void)
 819 {
 820         snd_soc_unregister_dai(&wm8510_dai);
 821 }
 822 module_exit(wm8510_exit);
 823
 824 MODULE_DESCRIPTION("ASoC WM8510 driver");
 825 MODULE_AUTHOR("Liam Girdwood");
 826 MODULE_LICENSE("GPL");