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 <liam.girdwood@wolfsonmicro.com>
   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 <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/pcm_params.h>
  24 #include <sound/soc.h>
  25 #include <sound/soc-dapm.h>
  26 #include <sound/initval.h>
  27
  28 #include "wm8510.h"
  29
  30 #define AUDIO_NAME "wm8510"
  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 /*
  59  * read wm8510 register cache
  60  */
  61 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
  62         unsigned int reg)
  63 {
  64         u16 *cache = codec->reg_cache;
  65         if (reg == WM8510_RESET)
  66                 return 0;
  67         if (reg >= WM8510_CACHEREGNUM)
  68                 return -1;
  69         return cache[reg];
  70 }
  71
  72 /*
  73  * write wm8510 register cache
  74  */
  75 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
  76         u16 reg, unsigned int value)
  77 {
  78         u16 *cache = codec->reg_cache;
  79         if (reg >= WM8510_CACHEREGNUM)
  80                 return;
  81         cache[reg] = value;
  82 }
  83
  84 /*
  85  * write to the WM8510 register space
  86  */
  87 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
  88         unsigned int value)
  89 {
  90         u8 data[2];
  91
  92         /* data is
  93          *   D15..D9 WM8510 register offset
  94          *   D8...D0 register data
  95          */
  96         data[0] = (reg << 1) | ((value >> 8) & 0x0001);
  97         data[1] = value & 0x00ff;
  98
  99         wm8510_write_reg_cache(codec, reg, value);
 100         if (codec->hw_write(codec->control_data, data, 2) == 2)
 101                 return 0;
 102         else
 103                 return -EIO;
 104 }
 105
 106 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0)
 107
 108 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
 109 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
 110 static const char *wm8510_alc[] = { "ALC", "Limiter" };
 111
 112 static const struct soc_enum wm8510_enum[] = {
 113         SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
 114         SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
 115         SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
 116         SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
 117 };
 118
 119 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
 120
 121 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
 122
 123 SOC_ENUM("DAC Companding", wm8510_enum[1]),
 124 SOC_ENUM("ADC Companding", wm8510_enum[0]),
 125
 126 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
 127 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
 128
 129 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
 130
 131 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
 132 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
 133 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
 134
 135 SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
 136
 137 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
 138 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
 139 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
 140
 141 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
 142 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
 143
 144 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
 145 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
 146 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
 147
 148 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
 149 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
 150 SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
 151
 152 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
 153 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
 154 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
 155
 156 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
 157 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
 158
 159 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
 160 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
 161
 162 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
 163 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
 164 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
 165 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
 166
 167 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
 168 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
 169 };
 170
 171 /* add non dapm controls */
 172 static int wm8510_add_controls(struct snd_soc_codec *codec)
 173 {
 174         int err, i;
 175
 176         for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
 177                 err = snd_ctl_add(codec->card,
 178                                 snd_soc_cnew(&wm8510_snd_controls[i], codec,
 179                                         NULL));
 180                 if (err < 0)
 181                         return err;
 182         }
 183
 184         return 0;
 185 }
 186
 187 /* Speaker Output Mixer */
 188 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
 189 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
 190 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
 191 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
 192 };
 193
 194 /* Mono Output Mixer */
 195 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
 196 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
 197 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
 198 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
 199 };
 200
 201 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
 202 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 0),
 203 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
 204 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
 205 };
 206
 207 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
 208 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
 209 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
 210 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
 211 };
 212
 213 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
 214 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
 215         &wm8510_speaker_mixer_controls[0],
 216         ARRAY_SIZE(wm8510_speaker_mixer_controls)),
 217 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
 218         &wm8510_mono_mixer_controls[0],
 219         ARRAY_SIZE(wm8510_mono_mixer_controls)),
 220 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
 221 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
 222 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
 223 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
 224 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
 225 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
 226
 227 SND_SOC_DAPM_PGA("Mic PGA", WM8510_POWER2, 2, 0,
 228                  &wm8510_micpga_controls[0],
 229                  ARRAY_SIZE(wm8510_micpga_controls)),
 230 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
 231         &wm8510_boost_controls[0],
 232         ARRAY_SIZE(wm8510_boost_controls)),
 233
 234 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
 235
 236 SND_SOC_DAPM_INPUT("MICN"),
 237 SND_SOC_DAPM_INPUT("MICP"),
 238 SND_SOC_DAPM_INPUT("AUX"),
 239 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 240 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 241 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 242 };
 243
 244 static const struct snd_soc_dapm_route audio_map[] = {
 245         /* Mono output mixer */
 246         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 247         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 248         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 249
 250         /* Speaker output mixer */
 251         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 252         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 253         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 254
 255         /* Outputs */
 256         {"Mono Out", NULL, "Mono Mixer"},
 257         {"MONOOUT", NULL, "Mono Out"},
 258         {"SpkN Out", NULL, "Speaker Mixer"},
 259         {"SpkP Out", NULL, "Speaker Mixer"},
 260         {"SPKOUTN", NULL, "SpkN Out"},
 261         {"SPKOUTP", NULL, "SpkP Out"},
 262
 263         /* Microphone PGA */
 264         {"Mic PGA", "MICN Switch", "MICN"},
 265         {"Mic PGA", "MICP Switch", "MICP"},
 266         { "Mic PGA", "AUX Switch", "Aux Input" },
 267
 268         /* Boost Mixer */
 269         {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
 270         {"Boost Mixer", "Mic Volume", "MICP"},
 271         {"Boost Mixer", "Aux Volume", "Aux Input"},
 272
 273         {"ADC", NULL, "Boost Mixer"},
 274 };
 275
 276 static int wm8510_add_widgets(struct snd_soc_codec *codec)
 277 {
 278         snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
 279                                   ARRAY_SIZE(wm8510_dapm_widgets));
 280
 281         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 282
 283         snd_soc_dapm_new_widgets(codec);
 284         return 0;
 285 }
 286
 287 struct pll_ {
 288         unsigned int pre_div:4; /* prescale - 1 */
 289         unsigned int n:4;
 290         unsigned int k;
 291 };
 292
 293 static struct pll_ pll_div;
 294
 295 /* The size in bits of the pll divide multiplied by 10
 296  * to allow rounding later */
 297 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 298
 299 static void pll_factors(unsigned int target, unsigned int source)
 300 {
 301         unsigned long long Kpart;
 302         unsigned int K, Ndiv, Nmod;
 303
 304         Ndiv = target / source;
 305         if (Ndiv < 6) {
 306                 source >>= 1;
 307                 pll_div.pre_div = 1;
 308                 Ndiv = target / source;
 309         } else
 310                 pll_div.pre_div = 0;
 311
 312         if ((Ndiv < 6) || (Ndiv > 12))
 313                 printk(KERN_WARNING
 314                         "WM8510 N value %d outwith recommended range!d\n",
 315                         Ndiv);
 316
 317         pll_div.n = Ndiv;
 318         Nmod = target % source;
 319         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 320
 321         do_div(Kpart, source);
 322
 323         K = Kpart & 0xFFFFFFFF;
 324
 325         /* Check if we need to round */
 326         if ((K % 10) >= 5)
 327                 K += 5;
 328
 329         /* Move down to proper range now rounding is done */
 330         K /= 10;
 331
 332         pll_div.k = K;
 333 }
 334
 335 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai,
 336                 int pll_id, unsigned int freq_in, unsigned int freq_out)
 337 {
 338         struct snd_soc_codec *codec = codec_dai->codec;
 339         u16 reg;
 340
 341         if (freq_in == 0 || freq_out == 0) {
 342                 /* Clock CODEC directly from MCLK */
 343                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
 344                 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
 345
 346                 /* Turn off PLL */
 347                 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
 348                 wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
 349                 return 0;
 350         }
 351
 352         pll_factors(freq_out*8, freq_in);
 353
 354         wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 355         wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
 356         wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
 357         wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
 358         reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
 359         wm8510_write(codec, WM8510_POWER1, reg | 0x020);
 360
 361         /* Run CODEC from PLL instead of MCLK */
 362         reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
 363         wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
 364
 365         return 0;
 366 }
 367
 368 /*
 369  * Configure WM8510 clock dividers.
 370  */
 371 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 372                 int div_id, int div)
 373 {
 374         struct snd_soc_codec *codec = codec_dai->codec;
 375         u16 reg;
 376
 377         switch (div_id) {
 378         case WM8510_OPCLKDIV:
 379                 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
 380                 wm8510_write(codec, WM8510_GPIO, reg | div);
 381                 break;
 382         case WM8510_MCLKDIV:
 383                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
 384                 wm8510_write(codec, WM8510_CLOCK, reg | div);
 385                 break;
 386         case WM8510_ADCCLK:
 387                 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
 388                 wm8510_write(codec, WM8510_ADC, reg | div);
 389                 break;
 390         case WM8510_DACCLK:
 391                 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
 392                 wm8510_write(codec, WM8510_DAC, reg | div);
 393                 break;
 394         case WM8510_BCLKDIV:
 395                 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
 396                 wm8510_write(codec, WM8510_CLOCK, reg | div);
 397                 break;
 398         default:
 399                 return -EINVAL;
 400         }
 401
 402         return 0;
 403 }
 404
 405 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
 406                 unsigned int fmt)
 407 {
 408         struct snd_soc_codec *codec = codec_dai->codec;
 409         u16 iface = 0;
 410         u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
 411
 412         /* set master/slave audio interface */
 413         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 414         case SND_SOC_DAIFMT_CBM_CFM:
 415                 clk |= 0x0001;
 416                 break;
 417         case SND_SOC_DAIFMT_CBS_CFS:
 418                 break;
 419         default:
 420                 return -EINVAL;
 421         }
 422
 423         /* interface format */
 424         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 425         case SND_SOC_DAIFMT_I2S:
 426                 iface |= 0x0010;
 427                 break;
 428         case SND_SOC_DAIFMT_RIGHT_J:
 429                 break;
 430         case SND_SOC_DAIFMT_LEFT_J:
 431                 iface |= 0x0008;
 432                 break;
 433         case SND_SOC_DAIFMT_DSP_A:
 434                 iface |= 0x00018;
 435                 break;
 436         default:
 437                 return -EINVAL;
 438         }
 439
 440         /* clock inversion */
 441         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 442         case SND_SOC_DAIFMT_NB_NF:
 443                 break;
 444         case SND_SOC_DAIFMT_IB_IF:
 445                 iface |= 0x0180;
 446                 break;
 447         case SND_SOC_DAIFMT_IB_NF:
 448                 iface |= 0x0100;
 449                 break;
 450         case SND_SOC_DAIFMT_NB_IF:
 451                 iface |= 0x0080;
 452                 break;
 453         default:
 454                 return -EINVAL;
 455         }
 456
 457         wm8510_write(codec, WM8510_IFACE, iface);
 458         wm8510_write(codec, WM8510_CLOCK, clk);
 459         return 0;
 460 }
 461
 462 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
 463         struct snd_pcm_hw_params *params)
 464 {
 465         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 466         struct snd_soc_device *socdev = rtd->socdev;
 467         struct snd_soc_codec *codec = socdev->codec;
 468         u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
 469         u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
 470
 471         /* bit size */
 472         switch (params_format(params)) {
 473         case SNDRV_PCM_FORMAT_S16_LE:
 474                 break;
 475         case SNDRV_PCM_FORMAT_S20_3LE:
 476                 iface |= 0x0020;
 477                 break;
 478         case SNDRV_PCM_FORMAT_S24_LE:
 479                 iface |= 0x0040;
 480                 break;
 481         case SNDRV_PCM_FORMAT_S32_LE:
 482                 iface |= 0x0060;
 483                 break;
 484         }
 485
 486         /* filter coefficient */
 487         switch (params_rate(params)) {
 488         case SNDRV_PCM_RATE_8000:
 489                 adn |= 0x5 << 1;
 490                 break;
 491         case SNDRV_PCM_RATE_11025:
 492                 adn |= 0x4 << 1;
 493                 break;
 494         case SNDRV_PCM_RATE_16000:
 495                 adn |= 0x3 << 1;
 496                 break;
 497         case SNDRV_PCM_RATE_22050:
 498                 adn |= 0x2 << 1;
 499                 break;
 500         case SNDRV_PCM_RATE_32000:
 501                 adn |= 0x1 << 1;
 502                 break;
 503         case SNDRV_PCM_RATE_44100:
 504         case SNDRV_PCM_RATE_48000:
 505                 break;
 506         }
 507
 508         wm8510_write(codec, WM8510_IFACE, iface);
 509         wm8510_write(codec, WM8510_ADD, adn);
 510         return 0;
 511 }
 512
 513 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
 514 {
 515         struct snd_soc_codec *codec = dai->codec;
 516         u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
 517
 518         if (mute)
 519                 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
 520         else
 521                 wm8510_write(codec, WM8510_DAC, mute_reg);
 522         return 0;
 523 }
 524
 525 /* liam need to make this lower power with dapm */
 526 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
 527         enum snd_soc_bias_level level)
 528 {
 529
 530         switch (level) {
 531         case SND_SOC_BIAS_ON:
 532                 wm8510_write(codec, WM8510_POWER1, 0x1ff);
 533                 wm8510_write(codec, WM8510_POWER2, 0x1ff);
 534                 wm8510_write(codec, WM8510_POWER3, 0x1ff);
 535                 break;
 536         case SND_SOC_BIAS_PREPARE:
 537         case SND_SOC_BIAS_STANDBY:
 538                 break;
 539         case SND_SOC_BIAS_OFF:
 540                 /* everything off, dac mute, inactive */
 541                 wm8510_write(codec, WM8510_POWER1, 0x0);
 542                 wm8510_write(codec, WM8510_POWER2, 0x0);
 543                 wm8510_write(codec, WM8510_POWER3, 0x0);
 544                 break;
 545         }
 546         codec->bias_level = level;
 547         return 0;
 548 }
 549
 550 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 551                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 552                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 553
 554 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 555         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 556
 557 struct snd_soc_dai wm8510_dai = {
 558         .name = "WM8510 HiFi",
 559         .playback = {
 560                 .stream_name = "Playback",
 561                 .channels_min = 2,
 562                 .channels_max = 2,
 563                 .rates = WM8510_RATES,
 564                 .formats = WM8510_FORMATS,},
 565         .capture = {
 566                 .stream_name = "Capture",
 567                 .channels_min = 2,
 568                 .channels_max = 2,
 569                 .rates = WM8510_RATES,
 570                 .formats = WM8510_FORMATS,},
 571         .ops = {
 572                 .hw_params = wm8510_pcm_hw_params,
 573         },
 574         .dai_ops = {
 575                 .digital_mute = wm8510_mute,
 576                 .set_fmt = wm8510_set_dai_fmt,
 577                 .set_clkdiv = wm8510_set_dai_clkdiv,
 578                 .set_pll = wm8510_set_dai_pll,
 579         },
 580 };
 581 EXPORT_SYMBOL_GPL(wm8510_dai);
 582
 583 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
 584 {
 585         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 586         struct snd_soc_codec *codec = socdev->codec;
 587
 588         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 589         return 0;
 590 }
 591
 592 static int wm8510_resume(struct platform_device *pdev)
 593 {
 594         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 595         struct snd_soc_codec *codec = socdev->codec;
 596         int i;
 597         u8 data[2];
 598         u16 *cache = codec->reg_cache;
 599
 600         /* Sync reg_cache with the hardware */
 601         for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
 602                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 603                 data[1] = cache[i] & 0x00ff;
 604                 codec->hw_write(codec->control_data, data, 2);
 605         }
 606         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 607         wm8510_set_bias_level(codec, codec->suspend_bias_level);
 608         return 0;
 609 }
 610
 611 /*
 612  * initialise the WM8510 driver
 613  * register the mixer and dsp interfaces with the kernel
 614  */
 615 static int wm8510_init(struct snd_soc_device *socdev)
 616 {
 617         struct snd_soc_codec *codec = socdev->codec;
 618         int ret = 0;
 619
 620         codec->name = "WM8510";
 621         codec->owner = THIS_MODULE;
 622         codec->read = wm8510_read_reg_cache;
 623         codec->write = wm8510_write;
 624         codec->set_bias_level = wm8510_set_bias_level;
 625         codec->dai = &wm8510_dai;
 626         codec->num_dai = 1;
 627         codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
 628         codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
 629
 630         if (codec->reg_cache == NULL)
 631                 return -ENOMEM;
 632
 633         wm8510_reset(codec);
 634
 635         /* register pcms */
 636         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 637         if (ret < 0) {
 638                 printk(KERN_ERR "wm8510: failed to create pcms\n");
 639                 goto pcm_err;
 640         }
 641
 642         /* power on device */
 643         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 644         wm8510_add_controls(codec);
 645         wm8510_add_widgets(codec);
 646         ret = snd_soc_register_card(socdev);
 647         if (ret < 0) {
 648                 printk(KERN_ERR "wm8510: failed to register card\n");
 649                 goto card_err;
 650         }
 651         return ret;
 652
 653 card_err:
 654         snd_soc_free_pcms(socdev);
 655         snd_soc_dapm_free(socdev);
 656 pcm_err:
 657         kfree(codec->reg_cache);
 658         return ret;
 659 }
 660
 661 static struct snd_soc_device *wm8510_socdev;
 662
 663 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 664
 665 /*
 666  * WM8510 2 wire address is 0x1a
 667  */
 668 #define I2C_DRIVERID_WM8510 0xfefe /* liam -  need a proper id */
 669
 670 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
 671
 672 /* Magic definition of all other variables and things */
 673 I2C_CLIENT_INSMOD;
 674
 675 static struct i2c_driver wm8510_i2c_driver;
 676 static struct i2c_client client_template;
 677
 678 /* If the i2c layer weren't so broken, we could pass this kind of data
 679    around */
 680
 681 static int wm8510_codec_probe(struct i2c_adapter *adap, int addr, int kind)
 682 {
 683         struct snd_soc_device *socdev = wm8510_socdev;
 684         struct wm8510_setup_data *setup = socdev->codec_data;
 685         struct snd_soc_codec *codec = socdev->codec;
 686         struct i2c_client *i2c;
 687         int ret;
 688
 689         if (addr != setup->i2c_address)
 690                 return -ENODEV;
 691
 692         client_template.adapter = adap;
 693         client_template.addr = addr;
 694
 695         i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
 696         if (i2c == NULL) {
 697                 kfree(codec);
 698                 return -ENOMEM;
 699         }
 700         i2c_set_clientdata(i2c, codec);
 701         codec->control_data = i2c;
 702
 703         ret = i2c_attach_client(i2c);
 704         if (ret < 0) {
 705                 pr_err("failed to attach codec at addr %x\n", addr);
 706                 goto err;
 707         }
 708
 709         ret = wm8510_init(socdev);
 710         if (ret < 0) {
 711                 pr_err("failed to initialise WM8510\n");
 712                 goto err;
 713         }
 714         return ret;
 715
 716 err:
 717         kfree(codec);
 718         kfree(i2c);
 719         return ret;
 720 }
 721
 722 static int wm8510_i2c_detach(struct i2c_client *client)
 723 {
 724         struct snd_soc_codec *codec = i2c_get_clientdata(client);
 725         i2c_detach_client(client);
 726         kfree(codec->reg_cache);
 727         kfree(client);
 728         return 0;
 729 }
 730
 731 static int wm8510_i2c_attach(struct i2c_adapter *adap)
 732 {
 733         return i2c_probe(adap, &addr_data, wm8510_codec_probe);
 734 }
 735
 736 /* corgi i2c codec control layer */
 737 static struct i2c_driver wm8510_i2c_driver = {
 738         .driver = {
 739                 .name = "WM8510 I2C Codec",
 740                 .owner = THIS_MODULE,
 741         },
 742         .id =             I2C_DRIVERID_WM8510,
 743         .attach_adapter = wm8510_i2c_attach,
 744         .detach_client =  wm8510_i2c_detach,
 745         .command =        NULL,
 746 };
 747
 748 static struct i2c_client client_template = {
 749         .name =   "WM8510",
 750         .driver = &wm8510_i2c_driver,
 751 };
 752 #endif
 753
 754 static int wm8510_probe(struct platform_device *pdev)
 755 {
 756         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 757         struct wm8510_setup_data *setup;
 758         struct snd_soc_codec *codec;
 759         int ret = 0;
 760
 761         pr_info("WM8510 Audio Codec %s", WM8510_VERSION);
 762
 763         setup = socdev->codec_data;
 764         codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
 765         if (codec == NULL)
 766                 return -ENOMEM;
 767
 768         socdev->codec = codec;
 769         mutex_init(&codec->mutex);
 770         INIT_LIST_HEAD(&codec->dapm_widgets);
 771         INIT_LIST_HEAD(&codec->dapm_paths);
 772
 773         wm8510_socdev = socdev;
 774 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 775         if (setup->i2c_address) {
 776                 normal_i2c[0] = setup->i2c_address;
 777                 codec->hw_write = (hw_write_t)i2c_master_send;
 778                 ret = i2c_add_driver(&wm8510_i2c_driver);
 779                 if (ret != 0)
 780                         printk(KERN_ERR "can't add i2c driver");
 781         }
 782 #else
 783         /* Add other interfaces here */
 784 #endif
 785         return ret;
 786 }
 787
 788 /* power down chip */
 789 static int wm8510_remove(struct platform_device *pdev)
 790 {
 791         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 792         struct snd_soc_codec *codec = socdev->codec;
 793
 794         if (codec->control_data)
 795                 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 796
 797         snd_soc_free_pcms(socdev);
 798         snd_soc_dapm_free(socdev);
 799 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 800         i2c_del_driver(&wm8510_i2c_driver);
 801 #endif
 802         kfree(codec);
 803
 804         return 0;
 805 }
 806
 807 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
 808         .probe =        wm8510_probe,
 809         .remove =       wm8510_remove,
 810         .suspend =      wm8510_suspend,
 811         .resume =       wm8510_resume,
 812 };
 813 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
 814
 815 MODULE_DESCRIPTION("ASoC WM8510 driver");
 816 MODULE_AUTHOR("Liam Girdwood");
 817 MODULE_LICENSE("GPL");