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 <linux/slab.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dapm.h>
  28 #include <sound/initval.h>
  29
  30 #include "wm8510.h"
  31
  32 /*
  33  * wm8510 register cache
  34  * We can't read the WM8510 register space when we are
  35  * using 2 wire for device control, so we cache them instead.
  36  */
  37 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
  38         0x0000, 0x0000, 0x0000, 0x0000,
  39         0x0050, 0x0000, 0x0140, 0x0000,
  40         0x0000, 0x0000, 0x0000, 0x00ff,
  41         0x0000, 0x0000, 0x0100, 0x00ff,
  42         0x0000, 0x0000, 0x012c, 0x002c,
  43         0x002c, 0x002c, 0x002c, 0x0000,
  44         0x0032, 0x0000, 0x0000, 0x0000,
  45         0x0000, 0x0000, 0x0000, 0x0000,
  46         0x0038, 0x000b, 0x0032, 0x0000,
  47         0x0008, 0x000c, 0x0093, 0x00e9,
  48         0x0000, 0x0000, 0x0000, 0x0000,
  49         0x0003, 0x0010, 0x0000, 0x0000,
  50         0x0000, 0x0002, 0x0001, 0x0000,
  51         0x0000, 0x0000, 0x0039, 0x0000,
  52         0x0001,
  53 };
  54
  55 #define WM8510_POWER1_BIASEN  0x08
  56 #define WM8510_POWER1_BUFIOEN 0x10
  57
  58 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0)
  59
  60 /* codec private data */
  61 struct wm8510_priv {
  62         enum snd_soc_control_type control_type;
  63 };
  64
  65 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
  66 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
  67 static const char *wm8510_alc[] = { "ALC", "Limiter" };
  68
  69 static const struct soc_enum wm8510_enum[] = {
  70         SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
  71         SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
  72         SOC_ENUM_SINGLE(WM8510_DAC,  4, 4, wm8510_deemp),
  73         SOC_ENUM_SINGLE(WM8510_ALC3,  8, 2, wm8510_alc),
  74 };
  75
  76 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
  77
  78 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
  79
  80 SOC_ENUM("DAC Companding", wm8510_enum[1]),
  81 SOC_ENUM("ADC Companding", wm8510_enum[0]),
  82
  83 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
  84 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
  85
  86 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
  87
  88 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
  89 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
  90 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
  91
  92 SOC_SINGLE("Capture Volume", WM8510_ADCVOL,  0, 127, 0),
  93
  94 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1,  8, 1, 0),
  95 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1,  4, 15, 0),
  96 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1,  0, 15, 0),
  97
  98 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2,  4, 7, 0),
  99 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2,  0, 15, 0),
 100
 101 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1,  8, 1, 0),
 102 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1,  3, 7, 0),
 103 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1,  0, 7, 0),
 104
 105 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2,  8, 1, 0),
 106 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2,  4, 7, 0),
 107 SOC_SINGLE("ALC Capture Target", WM8510_ALC2,  0, 15, 0),
 108
 109 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
 110 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3,  4, 15, 0),
 111 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3,  0, 15, 0),
 112
 113 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE,  3, 1, 0),
 114 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE,  0, 7, 0),
 115
 116 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA,  7, 1, 0),
 117 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA,  0, 63, 0),
 118
 119 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL,  7, 1, 0),
 120 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL,  6, 1, 1),
 121 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL,  0, 63, 0),
 122 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
 123
 124 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST,  8, 1, 0),
 125 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
 126 };
 127
 128 /* Speaker Output Mixer */
 129 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
 130 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
 131 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
 132 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
 133 };
 134
 135 /* Mono Output Mixer */
 136 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
 137 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
 138 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
 139 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
 140 };
 141
 142 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
 143 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA,  6, 1, 1),
 144 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
 145 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
 146 };
 147
 148 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
 149 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
 150 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
 151 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
 152 };
 153
 154 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
 155 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
 156         &wm8510_speaker_mixer_controls[0],
 157         ARRAY_SIZE(wm8510_speaker_mixer_controls)),
 158 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
 159         &wm8510_mono_mixer_controls[0],
 160         ARRAY_SIZE(wm8510_mono_mixer_controls)),
 161 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
 162 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
 163 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
 164 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
 165 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
 166 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
 167
 168 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
 169                    &wm8510_micpga_controls[0],
 170                    ARRAY_SIZE(wm8510_micpga_controls)),
 171 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
 172         &wm8510_boost_controls[0],
 173         ARRAY_SIZE(wm8510_boost_controls)),
 174
 175 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
 176
 177 SND_SOC_DAPM_INPUT("MICN"),
 178 SND_SOC_DAPM_INPUT("MICP"),
 179 SND_SOC_DAPM_INPUT("AUX"),
 180 SND_SOC_DAPM_OUTPUT("MONOOUT"),
 181 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
 182 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
 183 };
 184
 185 static const struct snd_soc_dapm_route audio_map[] = {
 186         /* Mono output mixer */
 187         {"Mono Mixer", "PCM Playback Switch", "DAC"},
 188         {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
 189         {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
 190
 191         /* Speaker output mixer */
 192         {"Speaker Mixer", "PCM Playback Switch", "DAC"},
 193         {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
 194         {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
 195
 196         /* Outputs */
 197         {"Mono Out", NULL, "Mono Mixer"},
 198         {"MONOOUT", NULL, "Mono Out"},
 199         {"SpkN Out", NULL, "Speaker Mixer"},
 200         {"SpkP Out", NULL, "Speaker Mixer"},
 201         {"SPKOUTN", NULL, "SpkN Out"},
 202         {"SPKOUTP", NULL, "SpkP Out"},
 203
 204         /* Microphone PGA */
 205         {"Mic PGA", "MICN Switch", "MICN"},
 206         {"Mic PGA", "MICP Switch", "MICP"},
 207         { "Mic PGA", "AUX Switch", "Aux Input" },
 208
 209         /* Boost Mixer */
 210         {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
 211         {"Boost Mixer", "Mic Volume", "MICP"},
 212         {"Boost Mixer", "Aux Volume", "Aux Input"},
 213
 214         {"ADC", NULL, "Boost Mixer"},
 215 };
 216
 217 static int wm8510_add_widgets(struct snd_soc_codec *codec)
 218 {
 219         struct snd_soc_dapm_context *dapm = &codec->dapm;
 220
 221         snd_soc_dapm_new_controls(dapm, wm8510_dapm_widgets,
 222                                   ARRAY_SIZE(wm8510_dapm_widgets));
 223         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 224
 225         return 0;
 226 }
 227
 228 struct pll_ {
 229         unsigned int pre_div:4; /* prescale - 1 */
 230         unsigned int n:4;
 231         unsigned int k;
 232 };
 233
 234 static struct pll_ pll_div;
 235
 236 /* The size in bits of the pll divide multiplied by 10
 237  * to allow rounding later */
 238 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 239
 240 static void pll_factors(unsigned int target, unsigned int source)
 241 {
 242         unsigned long long Kpart;
 243         unsigned int K, Ndiv, Nmod;
 244
 245         Ndiv = target / source;
 246         if (Ndiv < 6) {
 247                 source >>= 1;
 248                 pll_div.pre_div = 1;
 249                 Ndiv = target / source;
 250         } else
 251                 pll_div.pre_div = 0;
 252
 253         if ((Ndiv < 6) || (Ndiv > 12))
 254                 printk(KERN_WARNING
 255                         "WM8510 N value %u outwith recommended range!d\n",
 256                         Ndiv);
 257
 258         pll_div.n = Ndiv;
 259         Nmod = target % source;
 260         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 261
 262         do_div(Kpart, source);
 263
 264         K = Kpart & 0xFFFFFFFF;
 265
 266         /* Check if we need to round */
 267         if ((K % 10) >= 5)
 268                 K += 5;
 269
 270         /* Move down to proper range now rounding is done */
 271         K /= 10;
 272
 273         pll_div.k = K;
 274 }
 275
 276 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 277                 int source, unsigned int freq_in, unsigned int freq_out)
 278 {
 279         struct snd_soc_codec *codec = codec_dai->codec;
 280         u16 reg;
 281
 282         if (freq_in == 0 || freq_out == 0) {
 283                 /* Clock CODEC directly from MCLK */
 284                 reg = snd_soc_read(codec, WM8510_CLOCK);
 285                 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff);
 286
 287                 /* Turn off PLL */
 288                 reg = snd_soc_read(codec, WM8510_POWER1);
 289                 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df);
 290                 return 0;
 291         }
 292
 293         pll_factors(freq_out*4, freq_in);
 294
 295         snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
 296         snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18);
 297         snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
 298         snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
 299         reg = snd_soc_read(codec, WM8510_POWER1);
 300         snd_soc_write(codec, WM8510_POWER1, reg | 0x020);
 301
 302         /* Run CODEC from PLL instead of MCLK */
 303         reg = snd_soc_read(codec, WM8510_CLOCK);
 304         snd_soc_write(codec, WM8510_CLOCK, reg | 0x100);
 305
 306         return 0;
 307 }
 308
 309 /*
 310  * Configure WM8510 clock dividers.
 311  */
 312 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 313                 int div_id, int div)
 314 {
 315         struct snd_soc_codec *codec = codec_dai->codec;
 316         u16 reg;
 317
 318         switch (div_id) {
 319         case WM8510_OPCLKDIV:
 320                 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf;
 321                 snd_soc_write(codec, WM8510_GPIO, reg | div);
 322                 break;
 323         case WM8510_MCLKDIV:
 324                 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f;
 325                 snd_soc_write(codec, WM8510_CLOCK, reg | div);
 326                 break;
 327         case WM8510_ADCCLK:
 328                 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7;
 329                 snd_soc_write(codec, WM8510_ADC, reg | div);
 330                 break;
 331         case WM8510_DACCLK:
 332                 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7;
 333                 snd_soc_write(codec, WM8510_DAC, reg | div);
 334                 break;
 335         case WM8510_BCLKDIV:
 336                 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3;
 337                 snd_soc_write(codec, WM8510_CLOCK, reg | div);
 338                 break;
 339         default:
 340                 return -EINVAL;
 341         }
 342
 343         return 0;
 344 }
 345
 346 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
 347                 unsigned int fmt)
 348 {
 349         struct snd_soc_codec *codec = codec_dai->codec;
 350         u16 iface = 0;
 351         u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe;
 352
 353         /* set master/slave audio interface */
 354         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 355         case SND_SOC_DAIFMT_CBM_CFM:
 356                 clk |= 0x0001;
 357                 break;
 358         case SND_SOC_DAIFMT_CBS_CFS:
 359                 break;
 360         default:
 361                 return -EINVAL;
 362         }
 363
 364         /* interface format */
 365         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 366         case SND_SOC_DAIFMT_I2S:
 367                 iface |= 0x0010;
 368                 break;
 369         case SND_SOC_DAIFMT_RIGHT_J:
 370                 break;
 371         case SND_SOC_DAIFMT_LEFT_J:
 372                 iface |= 0x0008;
 373                 break;
 374         case SND_SOC_DAIFMT_DSP_A:
 375                 iface |= 0x00018;
 376                 break;
 377         default:
 378                 return -EINVAL;
 379         }
 380
 381         /* clock inversion */
 382         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 383         case SND_SOC_DAIFMT_NB_NF:
 384                 break;
 385         case SND_SOC_DAIFMT_IB_IF:
 386                 iface |= 0x0180;
 387                 break;
 388         case SND_SOC_DAIFMT_IB_NF:
 389                 iface |= 0x0100;
 390                 break;
 391         case SND_SOC_DAIFMT_NB_IF:
 392                 iface |= 0x0080;
 393                 break;
 394         default:
 395                 return -EINVAL;
 396         }
 397
 398         snd_soc_write(codec, WM8510_IFACE, iface);
 399         snd_soc_write(codec, WM8510_CLOCK, clk);
 400         return 0;
 401 }
 402
 403 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
 404                                 struct snd_pcm_hw_params *params,
 405                                 struct snd_soc_dai *dai)
 406 {
 407         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 408         struct snd_soc_codec *codec = rtd->codec;
 409         u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f;
 410         u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1;
 411
 412         /* bit size */
 413         switch (params_format(params)) {
 414         case SNDRV_PCM_FORMAT_S16_LE:
 415                 break;
 416         case SNDRV_PCM_FORMAT_S20_3LE:
 417                 iface |= 0x0020;
 418                 break;
 419         case SNDRV_PCM_FORMAT_S24_LE:
 420                 iface |= 0x0040;
 421                 break;
 422         case SNDRV_PCM_FORMAT_S32_LE:
 423                 iface |= 0x0060;
 424                 break;
 425         }
 426
 427         /* filter coefficient */
 428         switch (params_rate(params)) {
 429         case 8000:
 430                 adn |= 0x5 << 1;
 431                 break;
 432         case 11025:
 433                 adn |= 0x4 << 1;
 434                 break;
 435         case 16000:
 436                 adn |= 0x3 << 1;
 437                 break;
 438         case 22050:
 439                 adn |= 0x2 << 1;
 440                 break;
 441         case 32000:
 442                 adn |= 0x1 << 1;
 443                 break;
 444         case 44100:
 445         case 48000:
 446                 break;
 447         }
 448
 449         snd_soc_write(codec, WM8510_IFACE, iface);
 450         snd_soc_write(codec, WM8510_ADD, adn);
 451         return 0;
 452 }
 453
 454 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
 455 {
 456         struct snd_soc_codec *codec = dai->codec;
 457         u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf;
 458
 459         if (mute)
 460                 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40);
 461         else
 462                 snd_soc_write(codec, WM8510_DAC, mute_reg);
 463         return 0;
 464 }
 465
 466 /* liam need to make this lower power with dapm */
 467 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
 468         enum snd_soc_bias_level level)
 469 {
 470         u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3;
 471
 472         switch (level) {
 473         case SND_SOC_BIAS_ON:
 474         case SND_SOC_BIAS_PREPARE:
 475                 power1 |= 0x1;  /* VMID 50k */
 476                 snd_soc_write(codec, WM8510_POWER1, power1);
 477                 break;
 478
 479         case SND_SOC_BIAS_STANDBY:
 480                 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
 481
 482                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 483                         /* Initial cap charge at VMID 5k */
 484                         snd_soc_write(codec, WM8510_POWER1, power1 | 0x3);
 485                         mdelay(100);
 486                 }
 487
 488                 power1 |= 0x2;  /* VMID 500k */
 489                 snd_soc_write(codec, WM8510_POWER1, power1);
 490                 break;
 491
 492         case SND_SOC_BIAS_OFF:
 493                 snd_soc_write(codec, WM8510_POWER1, 0);
 494                 snd_soc_write(codec, WM8510_POWER2, 0);
 495                 snd_soc_write(codec, WM8510_POWER3, 0);
 496                 break;
 497         }
 498
 499         codec->dapm.bias_level = level;
 500         return 0;
 501 }
 502
 503 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 504                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 505                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 506
 507 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 508         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 509
 510 static struct snd_soc_dai_ops wm8510_dai_ops = {
 511         .hw_params      = wm8510_pcm_hw_params,
 512         .digital_mute   = wm8510_mute,
 513         .set_fmt        = wm8510_set_dai_fmt,
 514         .set_clkdiv     = wm8510_set_dai_clkdiv,
 515         .set_pll        = wm8510_set_dai_pll,
 516 };
 517
 518 static struct snd_soc_dai_driver wm8510_dai = {
 519         .name = "wm8510-hifi",
 520         .playback = {
 521                 .stream_name = "Playback",
 522                 .channels_min = 2,
 523                 .channels_max = 2,
 524                 .rates = WM8510_RATES,
 525                 .formats = WM8510_FORMATS,},
 526         .capture = {
 527                 .stream_name = "Capture",
 528                 .channels_min = 2,
 529                 .channels_max = 2,
 530                 .rates = WM8510_RATES,
 531                 .formats = WM8510_FORMATS,},
 532         .ops = &wm8510_dai_ops,
 533         .symmetric_rates = 1,
 534 };
 535
 536 static int wm8510_suspend(struct snd_soc_codec *codec, pm_message_t state)
 537 {
 538         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 539         return 0;
 540 }
 541
 542 static int wm8510_resume(struct snd_soc_codec *codec)
 543 {
 544         int i;
 545         u8 data[2];
 546         u16 *cache = codec->reg_cache;
 547
 548         /* Sync reg_cache with the hardware */
 549         for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
 550                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 551                 data[1] = cache[i] & 0x00ff;
 552                 codec->hw_write(codec->control_data, data, 2);
 553         }
 554         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 555
 556         return 0;
 557 }
 558
 559 static int wm8510_probe(struct snd_soc_codec *codec)
 560 {
 561         struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
 562         int ret;
 563
 564         ret = snd_soc_codec_set_cache_io(codec, 7, 9,  wm8510->control_type);
 565         if (ret < 0) {
 566                 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret);
 567                 return ret;
 568         }
 569
 570         wm8510_reset(codec);
 571
 572         /* power on device */
 573         wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 574         snd_soc_add_controls(codec, wm8510_snd_controls,
 575                                 ARRAY_SIZE(wm8510_snd_controls));
 576         wm8510_add_widgets(codec);
 577
 578         return ret;
 579 }
 580
 581 /* power down chip */
 582 static int wm8510_remove(struct snd_soc_codec *codec)
 583 {
 584         struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
 585
 586         wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
 587         kfree(wm8510);
 588         return 0;
 589 }
 590
 591 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = {
 592         .probe =        wm8510_probe,
 593         .remove =       wm8510_remove,
 594         .suspend =      wm8510_suspend,
 595         .resume =       wm8510_resume,
 596         .set_bias_level = wm8510_set_bias_level,
 597         .reg_cache_size = ARRAY_SIZE(wm8510_reg),
 598         .reg_word_size = sizeof(u16),
 599         .reg_cache_default =wm8510_reg,
 600 };
 601
 602 #if defined(CONFIG_SPI_MASTER)
 603 static int __devinit wm8510_spi_probe(struct spi_device *spi)
 604 {
 605         struct wm8510_priv *wm8510;
 606         int ret;
 607
 608         wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
 609         if (wm8510 == NULL)
 610                 return -ENOMEM;
 611
 612         wm8510->control_type = SND_SOC_SPI;
 613         spi_set_drvdata(spi, wm8510);
 614
 615         ret = snd_soc_register_codec(&spi->dev,
 616                         &soc_codec_dev_wm8510, &wm8510_dai, 1);
 617         if (ret < 0)
 618                 kfree(wm8510);
 619         return ret;
 620 }
 621
 622 static int __devexit wm8510_spi_remove(struct spi_device *spi)
 623 {
 624         snd_soc_unregister_codec(&spi->dev);
 625         return 0;
 626 }
 627
 628 static struct spi_driver wm8510_spi_driver = {
 629         .driver = {
 630                 .name   = "wm8510",
 631                 .owner  = THIS_MODULE,
 632         },
 633         .probe          = wm8510_spi_probe,
 634         .remove         = __devexit_p(wm8510_spi_remove),
 635 };
 636 #endif /* CONFIG_SPI_MASTER */
 637
 638 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 639 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c,
 640                                       const struct i2c_device_id *id)
 641 {
 642         struct wm8510_priv *wm8510;
 643         int ret;
 644
 645         wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
 646         if (wm8510 == NULL)
 647                 return -ENOMEM;
 648
 649         i2c_set_clientdata(i2c, wm8510);
 650         wm8510->control_type = SND_SOC_I2C;
 651
 652         ret =  snd_soc_register_codec(&i2c->dev,
 653                         &soc_codec_dev_wm8510, &wm8510_dai, 1);
 654         if (ret < 0)
 655                 kfree(wm8510);
 656         return ret;
 657 }
 658
 659 static __devexit int wm8510_i2c_remove(struct i2c_client *client)
 660 {
 661         snd_soc_unregister_codec(&client->dev);
 662         return 0;
 663 }
 664
 665 static const struct i2c_device_id wm8510_i2c_id[] = {
 666         { "wm8510", 0 },
 667         { }
 668 };
 669 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
 670
 671 static struct i2c_driver wm8510_i2c_driver = {
 672         .driver = {
 673                 .name = "wm8510-codec",
 674                 .owner = THIS_MODULE,
 675         },
 676         .probe =    wm8510_i2c_probe,
 677         .remove =   __devexit_p(wm8510_i2c_remove),
 678         .id_table = wm8510_i2c_id,
 679 };
 680 #endif
 681
 682 static int __init wm8510_modinit(void)
 683 {
 684         int ret = 0;
 685 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 686         ret = i2c_add_driver(&wm8510_i2c_driver);
 687         if (ret != 0) {
 688                 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n",
 689                        ret);
 690         }
 691 #endif
 692 #if defined(CONFIG_SPI_MASTER)
 693         ret = spi_register_driver(&wm8510_spi_driver);
 694         if (ret != 0) {
 695                 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n",
 696                        ret);
 697         }
 698 #endif
 699         return ret;
 700 }
 701 module_init(wm8510_modinit);
 702
 703 static void __exit wm8510_exit(void)
 704 {
 705 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 706         i2c_del_driver(&wm8510_i2c_driver);
 707 #endif
 708 #if defined(CONFIG_SPI_MASTER)
 709         spi_unregister_driver(&wm8510_spi_driver);
 710 #endif
 711 }
 712 module_exit(wm8510_exit);
 713
 714 MODULE_DESCRIPTION("ASoC WM8510 driver");
 715 MODULE_AUTHOR("Liam Girdwood");
 716 MODULE_LICENSE("GPL");