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 /*
  62  * read wm8510 register cache
  63  */
  64 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
  65         unsigned int reg)
  66 {
  67         u16 *cache = codec->reg_cache;
  68         if (reg == WM8510_RESET)
  69                 return 0;
  70         if (reg >= WM8510_CACHEREGNUM)
  71                 return -1;
  72         return cache[reg];
  73 }
  74
  75 /*
  76  * write wm8510 register cache
  77  */
  78 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
  79         u16 reg, unsigned int value)
  80 {
  81         u16 *cache = codec->reg_cache;
  82         if (reg >= WM8510_CACHEREGNUM)
  83                 return;
  84         cache[reg] = value;
  85 }
  86
  87 /*
  88  * write to the WM8510 register space
  89  */
  90 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
  91         unsigned int value)
  92 {
  93         u8 data[2];
  94
  95         /* data is
  96          *   D15..D9 WM8510 register offset
  97          *   D8...D0 register data
  98          */
  99         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
 100         data[1] = value & 0x00ff;
 101
 102         wm8510_write_reg_cache(codec, reg, value);
 103         if (codec->hw_write(codec->control_data, data, 2) == 2)
 104                 return 0;
 105         else
 106                 return -EIO;
 107 }
 108
 109 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0)
 110
 111 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
 112 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
 113 static const char *wm8510_alc[] = { "ALC", "Limiter" };
 114
 115 static const struct soc_enum wm8510_enum[] = {
 116         SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
 117         SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
 118         SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
 119         SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
 120 };
 121
 122 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
 123
 124 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
 125
 126 SOC_ENUM("DAC Companding", wm8510_enum[1]),
 127 SOC_ENUM("ADC Companding", wm8510_enum[0]),
 128
 129 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
 130 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
 131
 132 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
 133
 134 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
 135 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
 136 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
 137
 138 SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
 139
 140 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
 141 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
 142 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
 143
 144 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
 145 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
 146
 147 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
 148 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
 149 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
 150
 151 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
 152 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
 153 SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
 154
 155 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
 156 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
 157 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
 158
 159 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
 160 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
 161
 162 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
 163 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
 164
 165 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
 166 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
 167 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
 168 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
 169
 170 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
 171 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
 172 };
 173
 174 /* add non dapm controls */
 175 static int wm8510_add_controls(struct snd_soc_codec *codec)
 176 {
 177         int err, i;
 178
 179         for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
 180                 err = snd_ctl_add(codec->card,
 181                                 snd_soc_cnew(&wm8510_snd_controls[i], codec,
 182                                         NULL));
 183                 if (err < 0)
 184                         return err;
 185         }
 186
 187         return 0;
 188 }
 189
 190 /* Speaker Output Mixer */
 191 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
 192 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
 193 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
 194 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
 195 };
 196
 197 /* Mono Output Mixer */
 198 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
 199 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
 200 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
 201 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
 202 };
 203
 204 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
 205 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 1),
 206 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
 207 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
 208 };
 209
 210 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
 211 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
 212 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
 213 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
 214 };
 215
 216 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
 217 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
 218         &wm8510_speaker_mixer_controls[0],
 219         ARRAY_SIZE(wm8510_speaker_mixer_controls)),
 220 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
 221         &wm8510_mono_mixer_controls[0],
 222         ARRAY_SIZE(wm8510_mono_mixer_controls)),
 223 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
 224 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
 225 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
 226 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
 227 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
 228 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
 229
 230 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
 231                    &wm8510_micpga_controls[0],
 232                    ARRAY_SIZE(wm8510_micpga_controls)),
 233 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
 234         &wm8510_boost_controls[0],
 235         ARRAY_SIZE(wm8510_boost_controls)),
 236
 237 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
 238
 239 SND_SOC_DAPM_INPUT("MICN"),
 240 SND_SOC_DAPM_INPUT("MICP"),
 241 SND_SOC_DAPM_INPUT("AUX"),
 242 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 243 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 244 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 245 };
 246
 247 static const struct snd_soc_dapm_route audio_map[] = {
 248         /* Mono output mixer */
 249         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 250         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 251         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 252
 253         /* Speaker output mixer */
 254         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 255         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 256         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 257
 258         /* Outputs */
 259         {"Mono Out", NULL, "Mono Mixer"},
 260         {"MONOOUT", NULL, "Mono Out"},
 261         {"SpkN Out", NULL, "Speaker Mixer"},
 262         {"SpkP Out", NULL, "Speaker Mixer"},
 263         {"SPKOUTN", NULL, "SpkN Out"},
 264         {"SPKOUTP", NULL, "SpkP Out"},
 265
 266         /* Microphone PGA */
 267         {"Mic PGA", "MICN Switch", "MICN"},
 268         {"Mic PGA", "MICP Switch", "MICP"},
 269         { "Mic PGA", "AUX Switch", "Aux Input" },
 270
 271         /* Boost Mixer */
 272         {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
 273         {"Boost Mixer", "Mic Volume", "MICP"},
 274         {"Boost Mixer", "Aux Volume", "Aux Input"},
 275
 276         {"ADC", NULL, "Boost Mixer"},
 277 };
 278
 279 static int wm8510_add_widgets(struct snd_soc_codec *codec)
 280 {
 281         snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
 282                                   ARRAY_SIZE(wm8510_dapm_widgets));
 283
 284         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 285
 286         snd_soc_dapm_new_widgets(codec);
 287         return 0;
 288 }
 289
 290 struct pll_ {
 291         unsigned int pre_div:4; /* prescale - 1 */
 292         unsigned int n:4;
 293         unsigned int k;
 294 };
 295
 296 static struct pll_ pll_div;
 297
 298 /* The size in bits of the pll divide multiplied by 10
 299  * to allow rounding later */
 300 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 301
 302 static void pll_factors(unsigned int target, unsigned int source)
 303 {
 304         unsigned long long Kpart;
 305         unsigned int K, Ndiv, Nmod;
 306
 307         Ndiv = target / source;
 308         if (Ndiv < 6) {
 309                 source >>= 1;
 310                 pll_div.pre_div = 1;
 311                 Ndiv = target / source;
 312         } else
 313                 pll_div.pre_div = 0;
 314
 315         if ((Ndiv < 6) || (Ndiv > 12))
 316                 printk(KERN_WARNING
 317                         "WM8510 N value %d outwith recommended range!d\n",
 318                         Ndiv);
 319
 320         pll_div.n = Ndiv;
 321         Nmod = target % source;
 322         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 323
 324         do_div(Kpart, source);
 325
 326         K = Kpart & 0xFFFFFFFF;
 327
 328         /* Check if we need to round */
 329         if ((K % 10) >= 5)
 330                 K += 5;
 331
 332         /* Move down to proper range now rounding is done */
 333         K /= 10;
 334
 335         pll_div.k = K;
 336 }
 337
 338 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai,
 339                 int pll_id, unsigned int freq_in, unsigned int freq_out)
 340 {
 341         struct snd_soc_codec *codec = codec_dai->codec;
 342         u16 reg;
 343
 344         if (freq_in == 0 || freq_out == 0) {
 345                 /* Clock CODEC directly from MCLK */
 346                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
 347                 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
 348
 349                 /* Turn off PLL */
 350                 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
 351                 wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
 352                 return 0;
 353         }
 354
 355         pll_factors(freq_out*8, freq_in);
 356
 357         wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 358         wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
 359         wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
 360         wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
 361         reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
 362         wm8510_write(codec, WM8510_POWER1, reg | 0x020);
 363
 364         /* Run CODEC from PLL instead of MCLK */
 365         reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
 366         wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
 367
 368         return 0;
 369 }
 370
 371 /*
 372  * Configure WM8510 clock dividers.
 373  */
 374 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 375                 int div_id, int div)
 376 {
 377         struct snd_soc_codec *codec = codec_dai->codec;
 378         u16 reg;
 379
 380         switch (div_id) {
 381         case WM8510_OPCLKDIV:
 382                 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
 383                 wm8510_write(codec, WM8510_GPIO, reg | div);
 384                 break;
 385         case WM8510_MCLKDIV:
 386                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
 387                 wm8510_write(codec, WM8510_CLOCK, reg | div);
 388                 break;
 389         case WM8510_ADCCLK:
 390                 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
 391                 wm8510_write(codec, WM8510_ADC, reg | div);
 392                 break;
 393         case WM8510_DACCLK:
 394                 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
 395                 wm8510_write(codec, WM8510_DAC, reg | div);
 396                 break;
 397         case WM8510_BCLKDIV:
 398                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
 399                 wm8510_write(codec, WM8510_CLOCK, reg | div);
 400                 break;
 401         default:
 402                 return -EINVAL;
 403         }
 404
 405         return 0;
 406 }
 407
 408 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
 409                 unsigned int fmt)
 410 {
 411         struct snd_soc_codec *codec = codec_dai->codec;
 412         u16 iface = 0;
 413         u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
 414
 415         /* set master/slave audio interface */
 416         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 417         case SND_SOC_DAIFMT_CBM_CFM:
 418                 clk |= 0x0001;
 419                 break;
 420         case SND_SOC_DAIFMT_CBS_CFS:
 421                 break;
 422         default:
 423                 return -EINVAL;
 424         }
 425
 426         /* interface format */
 427         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 428         case SND_SOC_DAIFMT_I2S:
 429                 iface |= 0x0010;
 430                 break;
 431         case SND_SOC_DAIFMT_RIGHT_J:
 432                 break;
 433         case SND_SOC_DAIFMT_LEFT_J:
 434                 iface |= 0x0008;
 435                 break;
 436         case SND_SOC_DAIFMT_DSP_A:
 437                 iface |= 0x00018;
 438                 break;
 439         default:
 440                 return -EINVAL;
 441         }
 442
 443         /* clock inversion */
 444         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 445         case SND_SOC_DAIFMT_NB_NF:
 446                 break;
 447         case SND_SOC_DAIFMT_IB_IF:
 448                 iface |= 0x0180;
 449                 break;
 450         case SND_SOC_DAIFMT_IB_NF:
 451                 iface |= 0x0100;
 452                 break;
 453         case SND_SOC_DAIFMT_NB_IF:
 454                 iface |= 0x0080;
 455                 break;
 456         default:
 457                 return -EINVAL;
 458         }
 459
 460         wm8510_write(codec, WM8510_IFACE, iface);
 461         wm8510_write(codec, WM8510_CLOCK, clk);
 462         return 0;
 463 }
 464
 465 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
 466                                 struct snd_pcm_hw_params *params,
 467                                 struct snd_soc_dai *dai)
 468 {
 469         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 470         struct snd_soc_device *socdev = rtd->socdev;
 471         struct snd_soc_codec *codec = socdev->codec;
 472         u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
 473         u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
 474
 475         /* bit size */
 476         switch (params_format(params)) {
 477         case SNDRV_PCM_FORMAT_S16_LE:
 478                 break;
 479         case SNDRV_PCM_FORMAT_S20_3LE:
 480                 iface |= 0x0020;
 481                 break;
 482         case SNDRV_PCM_FORMAT_S24_LE:
 483                 iface |= 0x0040;
 484                 break;
 485         case SNDRV_PCM_FORMAT_S32_LE:
 486                 iface |= 0x0060;
 487                 break;
 488         }
 489
 490         /* filter coefficient */
 491         switch (params_rate(params)) {
 492         case SNDRV_PCM_RATE_8000:
 493                 adn |= 0x5 << 1;
 494                 break;
 495         case SNDRV_PCM_RATE_11025:
 496                 adn |= 0x4 << 1;
 497                 break;
 498         case SNDRV_PCM_RATE_16000:
 499                 adn |= 0x3 << 1;
 500                 break;
 501         case SNDRV_PCM_RATE_22050:
 502                 adn |= 0x2 << 1;
 503                 break;
 504         case SNDRV_PCM_RATE_32000:
 505                 adn |= 0x1 << 1;
 506                 break;
 507         case SNDRV_PCM_RATE_44100:
 508         case SNDRV_PCM_RATE_48000:
 509                 break;
 510         }
 511
 512         wm8510_write(codec, WM8510_IFACE, iface);
 513         wm8510_write(codec, WM8510_ADD, adn);
 514         return 0;
 515 }
 516
 517 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
 518 {
 519         struct snd_soc_codec *codec = dai->codec;
 520         u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
 521
 522         if (mute)
 523                 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
 524         else
 525                 wm8510_write(codec, WM8510_DAC, mute_reg);
 526         return 0;
 527 }
 528
 529 /* liam need to make this lower power with dapm */
 530 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
 531         enum snd_soc_bias_level level)
 532 {
 533         u16 power1 = wm8510_read_reg_cache(codec, WM8510_POWER1) & ~0x3;
 534
 535         switch (level) {
 536         case SND_SOC_BIAS_ON:
 537         case SND_SOC_BIAS_PREPARE:
 538                 power1 |= 0x1;  /* VMID 50k */
 539                 wm8510_write(codec, WM8510_POWER1, power1);
 540                 break;
 541
 542         case SND_SOC_BIAS_STANDBY:
 543                 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
 544
 545                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 546                         /* Initial cap charge at VMID 5k */
 547                         wm8510_write(codec, WM8510_POWER1, power1 | 0x3);
 548                         mdelay(100);
 549                 }
 550
 551                 power1 |= 0x2;  /* VMID 500k */
 552                 wm8510_write(codec, WM8510_POWER1, power1);
 553                 break;
 554
 555         case SND_SOC_BIAS_OFF:
 556                 wm8510_write(codec, WM8510_POWER1, 0);
 557                 wm8510_write(codec, WM8510_POWER2, 0);
 558                 wm8510_write(codec, WM8510_POWER3, 0);
 559                 break;
 560         }
 561
 562         codec->bias_level = level;
 563         return 0;
 564 }
 565
 566 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 567                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 568                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 569
 570 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 571         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 572
 573 struct snd_soc_dai wm8510_dai = {
 574         .name = "WM8510 HiFi",
 575         .playback = {
 576                 .stream_name = "Playback",
 577                 .channels_min = 2,
 578                 .channels_max = 2,
 579                 .rates = WM8510_RATES,
 580                 .formats = WM8510_FORMATS,},
 581         .capture = {
 582                 .stream_name = "Capture",
 583                 .channels_min = 2,
 584                 .channels_max = 2,
 585                 .rates = WM8510_RATES,
 586                 .formats = WM8510_FORMATS,},
 587         .ops = {
 588                 .hw_params = wm8510_pcm_hw_params,
 589                 .digital_mute = wm8510_mute,
 590                 .set_fmt = wm8510_set_dai_fmt,
 591                 .set_clkdiv = wm8510_set_dai_clkdiv,
 592                 .set_pll = wm8510_set_dai_pll,
 593         },
 594 };
 595 EXPORT_SYMBOL_GPL(wm8510_dai);
 596
 597 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
 598 {
 599         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 600         struct snd_soc_codec *codec = socdev->codec;
 601
 602         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 603         return 0;
 604 }
 605
 606 static int wm8510_resume(struct platform_device *pdev)
 607 {
 608         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 609         struct snd_soc_codec *codec = socdev->codec;
 610         int i;
 611         u8 data[2];
 612         u16 *cache = codec->reg_cache;
 613
 614         /* Sync reg_cache with the hardware */
 615         for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
 616                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 617                 data[1] = cache[i] & 0x00ff;
 618                 codec->hw_write(codec->control_data, data, 2);
 619         }
 620         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 621         wm8510_set_bias_level(codec, codec->suspend_bias_level);
 622         return 0;
 623 }
 624
 625 /*
 626  * initialise the WM8510 driver
 627  * register the mixer and dsp interfaces with the kernel
 628  */
 629 static int wm8510_init(struct snd_soc_device *socdev)
 630 {
 631         struct snd_soc_codec *codec = socdev->codec;
 632         int ret = 0;
 633
 634         codec->name = "WM8510";
 635         codec->owner = THIS_MODULE;
 636         codec->read = wm8510_read_reg_cache;
 637         codec->write = wm8510_write;
 638         codec->set_bias_level = wm8510_set_bias_level;
 639         codec->dai = &wm8510_dai;
 640         codec->num_dai = 1;
 641         codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
 642         codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
 643
 644         if (codec->reg_cache == NULL)
 645                 return -ENOMEM;
 646
 647         wm8510_reset(codec);
 648
 649         /* register pcms */
 650         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 651         if (ret < 0) {
 652                 printk(KERN_ERR "wm8510: failed to create pcms\n");
 653                 goto pcm_err;
 654         }
 655
 656         /* power on device */
 657         codec->bias_level = SND_SOC_BIAS_OFF;
 658         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 659         wm8510_add_controls(codec);
 660         wm8510_add_widgets(codec);
 661         ret = snd_soc_init_card(socdev);
 662         if (ret < 0) {
 663                 printk(KERN_ERR "wm8510: failed to register card\n");
 664                 goto card_err;
 665         }
 666         return ret;
 667
 668 card_err:
 669         snd_soc_free_pcms(socdev);
 670         snd_soc_dapm_free(socdev);
 671 pcm_err:
 672         kfree(codec->reg_cache);
 673         return ret;
 674 }
 675
 676 static struct snd_soc_device *wm8510_socdev;
 677
 678 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 679
 680 /*
 681  * WM8510 2 wire address is 0x1a
 682  */
 683
 684 static int wm8510_i2c_probe(struct i2c_client *i2c,
 685                             const struct i2c_device_id *id)
 686 {
 687         struct snd_soc_device *socdev = wm8510_socdev;
 688         struct snd_soc_codec *codec = socdev->codec;
 689         int ret;
 690
 691         i2c_set_clientdata(i2c, codec);
 692         codec->control_data = i2c;
 693
 694         ret = wm8510_init(socdev);
 695         if (ret < 0)
 696                 pr_err("failed to initialise WM8510\n");
 697
 698         return ret;
 699 }
 700
 701 static int wm8510_i2c_remove(struct i2c_client *client)
 702 {
 703         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 704         kfree(codec->reg_cache);
 705         return 0;
 706 }
 707
 708 static const struct i2c_device_id wm8510_i2c_id[] = {
 709         { "wm8510", 0 },
 710         { }
 711 };
 712 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
 713
 714 static struct i2c_driver wm8510_i2c_driver = {
 715         .driver = {
 716                 .name = "WM8510 I2C Codec",
 717                 .owner = THIS_MODULE,
 718         },
 719         .probe =    wm8510_i2c_probe,
 720         .remove =   wm8510_i2c_remove,
 721         .id_table = wm8510_i2c_id,
 722 };
 723
 724 static int wm8510_add_i2c_device(struct platform_device *pdev,
 725                                  const struct wm8510_setup_data *setup)
 726 {
 727         struct i2c_board_info info;
 728         struct i2c_adapter *adapter;
 729         struct i2c_client *client;
 730         int ret;
 731
 732         ret = i2c_add_driver(&wm8510_i2c_driver);
 733         if (ret != 0) {
 734                 dev_err(&pdev->dev, "can't add i2c driver\n");
 735                 return ret;
 736         }
 737
 738         memset(&info, 0, sizeof(struct i2c_board_info));
 739         info.addr = setup->i2c_address;
 740         strlcpy(info.type, "wm8510", I2C_NAME_SIZE);
 741
 742         adapter = i2c_get_adapter(setup->i2c_bus);
 743         if (!adapter) {
 744                 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
 745                         setup->i2c_bus);
 746                 goto err_driver;
 747         }
 748
 749         client = i2c_new_device(adapter, &info);
 750         i2c_put_adapter(adapter);
 751         if (!client) {
 752                 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
 753                         (unsigned int)info.addr);
 754                 goto err_driver;
 755         }
 756
 757         return 0;
 758
 759 err_driver:
 760         i2c_del_driver(&wm8510_i2c_driver);
 761         return -ENODEV;
 762 }
 763 #endif
 764
 765 #if defined(CONFIG_SPI_MASTER)
 766 static int __devinit wm8510_spi_probe(struct spi_device *spi)
 767 {
 768         struct snd_soc_device *socdev = wm8510_socdev;
 769         struct snd_soc_codec *codec = socdev->codec;
 770         int ret;
 771
 772         codec->control_data = spi;
 773
 774         ret = wm8510_init(socdev);
 775         if (ret < 0)
 776                 dev_err(&spi->dev, "failed to initialise WM8510\n");
 777
 778         return ret;
 779 }
 780
 781 static int __devexit wm8510_spi_remove(struct spi_device *spi)
 782 {
 783         return 0;
 784 }
 785
 786 static struct spi_driver wm8510_spi_driver = {
 787         .driver = {
 788                 .name   = "wm8510",
 789                 .bus    = &spi_bus_type,
 790                 .owner  = THIS_MODULE,
 791         },
 792         .probe          = wm8510_spi_probe,
 793         .remove         = __devexit_p(wm8510_spi_remove),
 794 };
 795
 796 static int wm8510_spi_write(struct spi_device *spi, const char *data, int len)
 797 {
 798         struct spi_transfer t;
 799         struct spi_message m;
 800         u8 msg[2];
 801
 802         if (len <= 0)
 803                 return 0;
 804
 805         msg[0] = data[0];
 806         msg[1] = data[1];
 807
 808         spi_message_init(&m);
 809         memset(&t, 0, (sizeof t));
 810
 811         t.tx_buf = &msg[0];
 812         t.len = len;
 813
 814         spi_message_add_tail(&t, &m);
 815         spi_sync(spi, &m);
 816
 817         return len;
 818 }
 819 #endif /* CONFIG_SPI_MASTER */
 820
 821 static int wm8510_probe(struct platform_device *pdev)
 822 {
 823         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 824         struct wm8510_setup_data *setup;
 825         struct snd_soc_codec *codec;
 826         int ret = 0;
 827
 828         pr_info("WM8510 Audio Codec %s", WM8510_VERSION);
 829
 830         setup = socdev->codec_data;
 831         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 832         if (codec == NULL)
 833                 return -ENOMEM;
 834
 835         socdev->codec = codec;
 836         mutex_init(&codec->mutex);
 837         INIT_LIST_HEAD(&codec->dapm_widgets);
 838         INIT_LIST_HEAD(&codec->dapm_paths);
 839
 840         wm8510_socdev = socdev;
 841 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 842         if (setup->i2c_address) {
 843                 codec->hw_write = (hw_write_t)i2c_master_send;
 844                 ret = wm8510_add_i2c_device(pdev, setup);
 845         }
 846 #endif
 847 #if defined(CONFIG_SPI_MASTER)
 848         if (setup->spi) {
 849                 codec->hw_write = (hw_write_t)wm8510_spi_write;
 850                 ret = spi_register_driver(&wm8510_spi_driver);
 851                 if (ret != 0)
 852                         printk(KERN_ERR "can't add spi driver");
 853         }
 854 #endif
 855
 856         if (ret != 0)
 857                 kfree(codec);
 858         return ret;
 859 }
 860
 861 /* power down chip */
 862 static int wm8510_remove(struct platform_device *pdev)
 863 {
 864         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 865         struct snd_soc_codec *codec = socdev->codec;
 866
 867         if (codec->control_data)
 868                 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 869
 870         snd_soc_free_pcms(socdev);
 871         snd_soc_dapm_free(socdev);
 872 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 873         i2c_unregister_device(codec->control_data);
 874         i2c_del_driver(&wm8510_i2c_driver);
 875 #endif
 876 #if defined(CONFIG_SPI_MASTER)
 877         spi_unregister_driver(&wm8510_spi_driver);
 878 #endif
 879         kfree(codec);
 880
 881         return 0;
 882 }
 883
 884 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
 885         .probe =        wm8510_probe,
 886         .remove =       wm8510_remove,
 887         .suspend =      wm8510_suspend,
 888         .resume =       wm8510_resume,
 889 };
 890 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
 891
 892 static int __init wm8510_modinit(void)
 893 {
 894         return snd_soc_register_dai(&wm8510_dai);
 895 }
 896 module_init(wm8510_modinit);
 897
 898 static void __exit wm8510_exit(void)
 899 {
 900         snd_soc_unregister_dai(&wm8510_dai);
 901 }
 902 module_exit(wm8510_exit);
 903
 904 MODULE_DESCRIPTION("ASoC WM8510 driver");
 905 MODULE_AUTHOR("Liam Girdwood");
 906 MODULE_LICENSE("GPL");