sound/soc/codecs/wm8960.c

   1 /*
   2  * wm8960.c  --  WM8960 ALSA SoC Audio driver
   3  *
   4  * Author: Liam Girdwood
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/init.h>
  14 #include <linux/delay.h>
  15 #include <linux/pm.h>
  16 #include <linux/i2c.h>
  17 #include <linux/platform_device.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/soc-dapm.h>
  23 #include <sound/initval.h>
  24 #include <sound/tlv.h>
  25
  26 #include "wm8960.h"
  27
  28 #define AUDIO_NAME "wm8960"
  29
  30 struct snd_soc_codec_device soc_codec_dev_wm8960;
  31
  32 /* R25 - Power 1 */
  33 #define WM8960_VREF      0x40
  34
  35 /* R28 - Anti-pop 1 */
  36 #define WM8960_POBCTRL   0x80
  37 #define WM8960_BUFDCOPEN 0x10
  38 #define WM8960_BUFIOEN   0x08
  39 #define WM8960_SOFT_ST   0x04
  40 #define WM8960_HPSTBY    0x01
  41
  42 /* R29 - Anti-pop 2 */
  43 #define WM8960_DISOP     0x40
  44
  45 /*
  46  * wm8960 register cache
  47  * We can't read the WM8960 register space when we are
  48  * using 2 wire for device control, so we cache them instead.
  49  */
  50 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  51         0x0097, 0x0097, 0x0000, 0x0000,
  52         0x0000, 0x0008, 0x0000, 0x000a,
  53         0x01c0, 0x0000, 0x00ff, 0x00ff,
  54         0x0000, 0x0000, 0x0000, 0x0000,
  55         0x0000, 0x007b, 0x0100, 0x0032,
  56         0x0000, 0x00c3, 0x00c3, 0x01c0,
  57         0x0000, 0x0000, 0x0000, 0x0000,
  58         0x0000, 0x0000, 0x0000, 0x0000,
  59         0x0100, 0x0100, 0x0050, 0x0050,
  60         0x0050, 0x0050, 0x0000, 0x0000,
  61         0x0000, 0x0000, 0x0040, 0x0000,
  62         0x0000, 0x0050, 0x0050, 0x0000,
  63         0x0002, 0x0037, 0x004d, 0x0080,
  64         0x0008, 0x0031, 0x0026, 0x00e9,
  65 };
  66
  67 struct wm8960_priv {
  68         u16 reg_cache[WM8960_CACHEREGNUM];
  69         struct snd_soc_codec codec;
  70 };
  71
  72 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  73
  74 /* enumerated controls */
  75 static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  76 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  77         "Right Inverted", "Stereo Inversion"};
  78 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  79 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  80 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  81 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  82
  83 static const struct soc_enum wm8960_enum[] = {
  84         SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph),
  85         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  86         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
  87         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
  88         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
  89         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
  90         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
  91 };
  92
  93 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
  94 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
  95 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
  96 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
  97
  98 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
  99 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 100                  0, 63, 0, adc_tlv),
 101 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 102         6, 1, 0),
 103 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 104         7, 1, 0),
 105
 106 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 107                  0, 255, 0, dac_tlv),
 108
 109 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 110                  0, 127, 0, out_tlv),
 111 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 112         7, 1, 0),
 113
 114 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 115                  0, 127, 0, out_tlv),
 116 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 117         7, 1, 0),
 118 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 119 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 120
 121 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 122 SOC_ENUM("ADC Polarity", wm8960_enum[1]),
 123 SOC_ENUM("Playback De-emphasis", wm8960_enum[0]),
 124 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 125
 126 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 127
 128 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]),
 129 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]),
 130 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 131 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 132
 133 SOC_ENUM("ALC Function", wm8960_enum[5]),
 134 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 135 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 136 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 137 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 138 SOC_ENUM("ALC Mode", wm8960_enum[6]),
 139 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 140 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 141
 142 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 143 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 144
 145 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 146         0, 127, 0),
 147
 148 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 149                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 150 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 151                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 152 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 153                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 154 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 155                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 156 };
 157
 158 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 159 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 160 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 161 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 162 };
 163
 164 static const struct snd_kcontrol_new wm8960_lin[] = {
 165 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 166 };
 167
 168 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 169 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 170 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 171 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 172 };
 173
 174 static const struct snd_kcontrol_new wm8960_rin[] = {
 175 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 176 };
 177
 178 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 179 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 180 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 181 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 182 };
 183
 184 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 185 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 186 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 187 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 188 };
 189
 190 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 191 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 192 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 193 };
 194
 195 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 196 SND_SOC_DAPM_INPUT("LINPUT1"),
 197 SND_SOC_DAPM_INPUT("RINPUT1"),
 198 SND_SOC_DAPM_INPUT("LINPUT2"),
 199 SND_SOC_DAPM_INPUT("RINPUT2"),
 200 SND_SOC_DAPM_INPUT("LINPUT3"),
 201 SND_SOC_DAPM_INPUT("RINPUT3"),
 202
 203 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
 204
 205 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 206                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 207 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 208                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 209
 210 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 211                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 212 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 213                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 214
 215 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 216 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 217
 218 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 219 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 220
 221 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 222         &wm8960_loutput_mixer[0],
 223         ARRAY_SIZE(wm8960_loutput_mixer)),
 224 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 225         &wm8960_routput_mixer[0],
 226         ARRAY_SIZE(wm8960_routput_mixer)),
 227
 228 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 229         &wm8960_mono_out[0],
 230         ARRAY_SIZE(wm8960_mono_out)),
 231
 232 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 233 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 234
 235 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 236 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 237
 238 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 239 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 240
 241 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 242 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 243 SND_SOC_DAPM_OUTPUT("HP_L"),
 244 SND_SOC_DAPM_OUTPUT("HP_R"),
 245 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 246 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 247 SND_SOC_DAPM_OUTPUT("OUT3"),
 248 };
 249
 250 static const struct snd_soc_dapm_route audio_paths[] = {
 251         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 252         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 253         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 254
 255         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 256         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 257         { "Left Input Mixer", NULL, "LINPUT2" },
 258         { "Left Input Mixer", NULL, "LINPUT3" },
 259
 260         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 261         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 262         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 263
 264         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 265         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 266         { "Right Input Mixer", NULL, "RINPUT2" },
 267         { "Right Input Mixer", NULL, "LINPUT3" },
 268
 269         { "Left ADC", NULL, "Left Input Mixer" },
 270         { "Right ADC", NULL, "Right Input Mixer" },
 271
 272         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 273         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 274         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 275
 276         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 277         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 278         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 279
 280         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 281         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 282
 283         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 284         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 285
 286         { "HP_L", NULL, "LOUT1 PGA" },
 287         { "HP_R", NULL, "ROUT1 PGA" },
 288
 289         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 290         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 291
 292         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 293         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 294
 295         { "SPK_LN", NULL, "Left Speaker Output" },
 296         { "SPK_LP", NULL, "Left Speaker Output" },
 297         { "SPK_RN", NULL, "Right Speaker Output" },
 298         { "SPK_RP", NULL, "Right Speaker Output" },
 299
 300         { "OUT3", NULL, "Mono Output Mixer", }
 301 };
 302
 303 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 304 {
 305         snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
 306                                   ARRAY_SIZE(wm8960_dapm_widgets));
 307
 308         snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
 309
 310         return 0;
 311 }
 312
 313 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 314                 unsigned int fmt)
 315 {
 316         struct snd_soc_codec *codec = codec_dai->codec;
 317         u16 iface = 0;
 318
 319         /* set master/slave audio interface */
 320         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 321         case SND_SOC_DAIFMT_CBM_CFM:
 322                 iface |= 0x0040;
 323                 break;
 324         case SND_SOC_DAIFMT_CBS_CFS:
 325                 break;
 326         default:
 327                 return -EINVAL;
 328         }
 329
 330         /* interface format */
 331         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 332         case SND_SOC_DAIFMT_I2S:
 333                 iface |= 0x0002;
 334                 break;
 335         case SND_SOC_DAIFMT_RIGHT_J:
 336                 break;
 337         case SND_SOC_DAIFMT_LEFT_J:
 338                 iface |= 0x0001;
 339                 break;
 340         case SND_SOC_DAIFMT_DSP_A:
 341                 iface |= 0x0003;
 342                 break;
 343         case SND_SOC_DAIFMT_DSP_B:
 344                 iface |= 0x0013;
 345                 break;
 346         default:
 347                 return -EINVAL;
 348         }
 349
 350         /* clock inversion */
 351         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 352         case SND_SOC_DAIFMT_NB_NF:
 353                 break;
 354         case SND_SOC_DAIFMT_IB_IF:
 355                 iface |= 0x0090;
 356                 break;
 357         case SND_SOC_DAIFMT_IB_NF:
 358                 iface |= 0x0080;
 359                 break;
 360         case SND_SOC_DAIFMT_NB_IF:
 361                 iface |= 0x0010;
 362                 break;
 363         default:
 364                 return -EINVAL;
 365         }
 366
 367         /* set iface */
 368         snd_soc_write(codec, WM8960_IFACE1, iface);
 369         return 0;
 370 }
 371
 372 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 373                             struct snd_pcm_hw_params *params,
 374                             struct snd_soc_dai *dai)
 375 {
 376         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 377         struct snd_soc_device *socdev = rtd->socdev;
 378         struct snd_soc_codec *codec = socdev->card->codec;
 379         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 380
 381         /* bit size */
 382         switch (params_format(params)) {
 383         case SNDRV_PCM_FORMAT_S16_LE:
 384                 break;
 385         case SNDRV_PCM_FORMAT_S20_3LE:
 386                 iface |= 0x0004;
 387                 break;
 388         case SNDRV_PCM_FORMAT_S24_LE:
 389                 iface |= 0x0008;
 390                 break;
 391         }
 392
 393         /* set iface */
 394         snd_soc_write(codec, WM8960_IFACE1, iface);
 395         return 0;
 396 }
 397
 398 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 399 {
 400         struct snd_soc_codec *codec = dai->codec;
 401         u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
 402
 403         if (mute)
 404                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
 405         else
 406                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
 407         return 0;
 408 }
 409
 410 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 411                                  enum snd_soc_bias_level level)
 412 {
 413         struct wm8960_data *pdata = codec->dev->platform_data;
 414         u16 reg;
 415
 416         switch (level) {
 417         case SND_SOC_BIAS_ON:
 418                 break;
 419
 420         case SND_SOC_BIAS_PREPARE:
 421                 /* Set VMID to 2x50k */
 422                 reg = snd_soc_read(codec, WM8960_POWER1);
 423                 reg &= ~0x180;
 424                 reg |= 0x80;
 425                 snd_soc_write(codec, WM8960_POWER1, reg);
 426                 break;
 427
 428         case SND_SOC_BIAS_STANDBY:
 429                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 430                         /* Enable anti-pop features */
 431                         snd_soc_write(codec, WM8960_APOP1,
 432                                      WM8960_POBCTRL | WM8960_SOFT_ST |
 433                                      WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 434
 435                         /* Discharge HP output */
 436                         reg = WM8960_DISOP;
 437                         if (pdata)
 438                                 reg |= pdata->dres << 4;
 439                         snd_soc_write(codec, WM8960_APOP2, reg);
 440
 441                         msleep(400);
 442
 443                         snd_soc_write(codec, WM8960_APOP2, 0);
 444
 445                         /* Enable & ramp VMID at 2x50k */
 446                         reg = snd_soc_read(codec, WM8960_POWER1);
 447                         reg |= 0x80;
 448                         snd_soc_write(codec, WM8960_POWER1, reg);
 449                         msleep(100);
 450
 451                         /* Enable VREF */
 452                         snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
 453
 454                         /* Disable anti-pop features */
 455                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 456                 }
 457
 458                 /* Set VMID to 2x250k */
 459                 reg = snd_soc_read(codec, WM8960_POWER1);
 460                 reg &= ~0x180;
 461                 reg |= 0x100;
 462                 snd_soc_write(codec, WM8960_POWER1, reg);
 463                 break;
 464
 465         case SND_SOC_BIAS_OFF:
 466                 /* Enable anti-pop features */
 467                 snd_soc_write(codec, WM8960_APOP1,
 468                              WM8960_POBCTRL | WM8960_SOFT_ST |
 469                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 470
 471                 /* Disable VMID and VREF, let them discharge */
 472                 snd_soc_write(codec, WM8960_POWER1, 0);
 473                 msleep(600);
 474
 475                 snd_soc_write(codec, WM8960_APOP1, 0);
 476                 break;
 477         }
 478
 479         codec->bias_level = level;
 480
 481         return 0;
 482 }
 483
 484 /* PLL divisors */
 485 struct _pll_div {
 486         u32 pre_div:1;
 487         u32 n:4;
 488         u32 k:24;
 489 };
 490
 491 /* The size in bits of the pll divide multiplied by 10
 492  * to allow rounding later */
 493 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 494
 495 static int pll_factors(unsigned int source, unsigned int target,
 496                        struct _pll_div *pll_div)
 497 {
 498         unsigned long long Kpart;
 499         unsigned int K, Ndiv, Nmod;
 500
 501         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 502
 503         /* Scale up target to PLL operating frequency */
 504         target *= 4;
 505
 506         Ndiv = target / source;
 507         if (Ndiv < 6) {
 508                 source >>= 1;
 509                 pll_div->pre_div = 1;
 510                 Ndiv = target / source;
 511         } else
 512                 pll_div->pre_div = 0;
 513
 514         if ((Ndiv < 6) || (Ndiv > 12)) {
 515                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 516                 return -EINVAL;
 517         }
 518
 519         pll_div->n = Ndiv;
 520         Nmod = target % source;
 521         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 522
 523         do_div(Kpart, source);
 524
 525         K = Kpart & 0xFFFFFFFF;
 526
 527         /* Check if we need to round */
 528         if ((K % 10) >= 5)
 529                 K += 5;
 530
 531         /* Move down to proper range now rounding is done */
 532         K /= 10;
 533
 534         pll_div->k = K;
 535
 536         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 537                  pll_div->n, pll_div->k, pll_div->pre_div);
 538
 539         return 0;
 540 }
 541
 542 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 543                 int source, unsigned int freq_in, unsigned int freq_out)
 544 {
 545         struct snd_soc_codec *codec = codec_dai->codec;
 546         u16 reg;
 547         static struct _pll_div pll_div;
 548         int ret;
 549
 550         if (freq_in && freq_out) {
 551                 ret = pll_factors(freq_in, freq_out, &pll_div);
 552                 if (ret != 0)
 553                         return ret;
 554         }
 555
 556         /* Disable the PLL: even if we are changing the frequency the
 557          * PLL needs to be disabled while we do so. */
 558         snd_soc_write(codec, WM8960_CLOCK1,
 559                      snd_soc_read(codec, WM8960_CLOCK1) & ~1);
 560         snd_soc_write(codec, WM8960_POWER2,
 561                      snd_soc_read(codec, WM8960_POWER2) & ~1);
 562
 563         if (!freq_in || !freq_out)
 564                 return 0;
 565
 566         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 567         reg |= pll_div.pre_div << 4;
 568         reg |= pll_div.n;
 569
 570         if (pll_div.k) {
 571                 reg |= 0x20;
 572
 573                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 574                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 575                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 576         }
 577         snd_soc_write(codec, WM8960_PLL1, reg);
 578
 579         /* Turn it on */
 580         snd_soc_write(codec, WM8960_POWER2,
 581                      snd_soc_read(codec, WM8960_POWER2) | 1);
 582         msleep(250);
 583         snd_soc_write(codec, WM8960_CLOCK1,
 584                      snd_soc_read(codec, WM8960_CLOCK1) | 1);
 585
 586         return 0;
 587 }
 588
 589 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 590                 int div_id, int div)
 591 {
 592         struct snd_soc_codec *codec = codec_dai->codec;
 593         u16 reg;
 594
 595         switch (div_id) {
 596         case WM8960_SYSCLKSEL:
 597                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe;
 598                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 599                 break;
 600         case WM8960_SYSCLKDIV:
 601                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 602                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 603                 break;
 604         case WM8960_DACDIV:
 605                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 606                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 607                 break;
 608         case WM8960_OPCLKDIV:
 609                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 610                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 611                 break;
 612         case WM8960_DCLKDIV:
 613                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 614                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 615                 break;
 616         case WM8960_TOCLKSEL:
 617                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 618                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 619                 break;
 620         default:
 621                 return -EINVAL;
 622         }
 623
 624         return 0;
 625 }
 626
 627 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 628
 629 #define WM8960_FORMATS \
 630         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 631         SNDRV_PCM_FMTBIT_S24_LE)
 632
 633 static struct snd_soc_dai_ops wm8960_dai_ops = {
 634         .hw_params = wm8960_hw_params,
 635         .digital_mute = wm8960_mute,
 636         .set_fmt = wm8960_set_dai_fmt,
 637         .set_clkdiv = wm8960_set_dai_clkdiv,
 638         .set_pll = wm8960_set_dai_pll,
 639 };
 640
 641 struct snd_soc_dai wm8960_dai = {
 642         .name = "WM8960",
 643         .playback = {
 644                 .stream_name = "Playback",
 645                 .channels_min = 1,
 646                 .channels_max = 2,
 647                 .rates = WM8960_RATES,
 648                 .formats = WM8960_FORMATS,},
 649         .capture = {
 650                 .stream_name = "Capture",
 651                 .channels_min = 1,
 652                 .channels_max = 2,
 653                 .rates = WM8960_RATES,
 654                 .formats = WM8960_FORMATS,},
 655         .ops = &wm8960_dai_ops,
 656         .symmetric_rates = 1,
 657 };
 658 EXPORT_SYMBOL_GPL(wm8960_dai);
 659
 660 static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
 661 {
 662         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 663         struct snd_soc_codec *codec = socdev->card->codec;
 664
 665         wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF);
 666         return 0;
 667 }
 668
 669 static int wm8960_resume(struct platform_device *pdev)
 670 {
 671         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 672         struct snd_soc_codec *codec = socdev->card->codec;
 673         int i;
 674         u8 data[2];
 675         u16 *cache = codec->reg_cache;
 676
 677         /* Sync reg_cache with the hardware */
 678         for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
 679                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 680                 data[1] = cache[i] & 0x00ff;
 681                 codec->hw_write(codec->control_data, data, 2);
 682         }
 683
 684         wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 685         wm8960_set_bias_level(codec, codec->suspend_bias_level);
 686         return 0;
 687 }
 688
 689 static struct snd_soc_codec *wm8960_codec;
 690
 691 static int wm8960_probe(struct platform_device *pdev)
 692 {
 693         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 694         struct snd_soc_codec *codec;
 695         int ret = 0;
 696
 697         if (wm8960_codec == NULL) {
 698                 dev_err(&pdev->dev, "Codec device not registered\n");
 699                 return -ENODEV;
 700         }
 701
 702         socdev->card->codec = wm8960_codec;
 703         codec = wm8960_codec;
 704
 705         /* register pcms */
 706         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 707         if (ret < 0) {
 708                 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
 709                 goto pcm_err;
 710         }
 711
 712         snd_soc_add_controls(codec, wm8960_snd_controls,
 713                              ARRAY_SIZE(wm8960_snd_controls));
 714         wm8960_add_widgets(codec);
 715
 716         return ret;
 717
 718 pcm_err:
 719         return ret;
 720 }
 721
 722 /* power down chip */
 723 static int wm8960_remove(struct platform_device *pdev)
 724 {
 725         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 726
 727         snd_soc_free_pcms(socdev);
 728         snd_soc_dapm_free(socdev);
 729
 730         return 0;
 731 }
 732
 733 struct snd_soc_codec_device soc_codec_dev_wm8960 = {
 734         .probe =        wm8960_probe,
 735         .remove =       wm8960_remove,
 736         .suspend =      wm8960_suspend,
 737         .resume =       wm8960_resume,
 738 };
 739 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
 740
 741 static int wm8960_register(struct wm8960_priv *wm8960,
 742                            enum snd_soc_control_type control)
 743 {
 744         struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
 745         struct snd_soc_codec *codec = &wm8960->codec;
 746         int ret;
 747         u16 reg;
 748
 749         if (wm8960_codec) {
 750                 dev_err(codec->dev, "Another WM8960 is registered\n");
 751                 ret = -EINVAL;
 752                 goto err;
 753         }
 754
 755         if (!pdata) {
 756                 dev_warn(codec->dev, "No platform data supplied\n");
 757         } else {
 758                 if (pdata->dres > WM8960_DRES_MAX) {
 759                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 760                         pdata->dres = 0;
 761                 }
 762         }
 763
 764         mutex_init(&codec->mutex);
 765         INIT_LIST_HEAD(&codec->dapm_widgets);
 766         INIT_LIST_HEAD(&codec->dapm_paths);
 767
 768         codec->private_data = wm8960;
 769         codec->name = "WM8960";
 770         codec->owner = THIS_MODULE;
 771         codec->bias_level = SND_SOC_BIAS_OFF;
 772         codec->set_bias_level = wm8960_set_bias_level;
 773         codec->dai = &wm8960_dai;
 774         codec->num_dai = 1;
 775         codec->reg_cache_size = WM8960_CACHEREGNUM;
 776         codec->reg_cache = &wm8960->reg_cache;
 777
 778         memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
 779
 780         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 781         if (ret < 0) {
 782                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 783                 goto err;
 784         }
 785
 786         ret = wm8960_reset(codec);
 787         if (ret < 0) {
 788                 dev_err(codec->dev, "Failed to issue reset\n");
 789                 goto err;
 790         }
 791
 792         wm8960_dai.dev = codec->dev;
 793
 794         wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 795
 796         /* Latch the update bits */
 797         reg = snd_soc_read(codec, WM8960_LINVOL);
 798         snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
 799         reg = snd_soc_read(codec, WM8960_RINVOL);
 800         snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
 801         reg = snd_soc_read(codec, WM8960_LADC);
 802         snd_soc_write(codec, WM8960_LADC, reg | 0x100);
 803         reg = snd_soc_read(codec, WM8960_RADC);
 804         snd_soc_write(codec, WM8960_RADC, reg | 0x100);
 805         reg = snd_soc_read(codec, WM8960_LDAC);
 806         snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
 807         reg = snd_soc_read(codec, WM8960_RDAC);
 808         snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
 809         reg = snd_soc_read(codec, WM8960_LOUT1);
 810         snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
 811         reg = snd_soc_read(codec, WM8960_ROUT1);
 812         snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
 813         reg = snd_soc_read(codec, WM8960_LOUT2);
 814         snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
 815         reg = snd_soc_read(codec, WM8960_ROUT2);
 816         snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
 817
 818         wm8960_codec = codec;
 819
 820         ret = snd_soc_register_codec(codec);
 821         if (ret != 0) {
 822                 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
 823                 goto err;
 824         }
 825
 826         ret = snd_soc_register_dai(&wm8960_dai);
 827         if (ret != 0) {
 828                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 829                 goto err_codec;
 830         }
 831
 832         return 0;
 833
 834 err_codec:
 835         snd_soc_unregister_codec(codec);
 836 err:
 837         kfree(wm8960);
 838         return ret;
 839 }
 840
 841 static void wm8960_unregister(struct wm8960_priv *wm8960)
 842 {
 843         wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
 844         snd_soc_unregister_dai(&wm8960_dai);
 845         snd_soc_unregister_codec(&wm8960->codec);
 846         kfree(wm8960);
 847         wm8960_codec = NULL;
 848 }
 849
 850 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
 851                                       const struct i2c_device_id *id)
 852 {
 853         struct wm8960_priv *wm8960;
 854         struct snd_soc_codec *codec;
 855
 856         wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
 857         if (wm8960 == NULL)
 858                 return -ENOMEM;
 859
 860         codec = &wm8960->codec;
 861
 862         i2c_set_clientdata(i2c, wm8960);
 863         codec->control_data = i2c;
 864
 865         codec->dev = &i2c->dev;
 866
 867         return wm8960_register(wm8960, SND_SOC_I2C);
 868 }
 869
 870 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
 871 {
 872         struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
 873         wm8960_unregister(wm8960);
 874         return 0;
 875 }
 876
 877 static const struct i2c_device_id wm8960_i2c_id[] = {
 878         { "wm8960", 0 },
 879         { }
 880 };
 881 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
 882
 883 static struct i2c_driver wm8960_i2c_driver = {
 884         .driver = {
 885                 .name = "WM8960 I2C Codec",
 886                 .owner = THIS_MODULE,
 887         },
 888         .probe =    wm8960_i2c_probe,
 889         .remove =   __devexit_p(wm8960_i2c_remove),
 890         .id_table = wm8960_i2c_id,
 891 };
 892
 893 static int __init wm8960_modinit(void)
 894 {
 895         int ret;
 896
 897         ret = i2c_add_driver(&wm8960_i2c_driver);
 898         if (ret != 0) {
 899                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
 900                        ret);
 901         }
 902
 903         return ret;
 904 }
 905 module_init(wm8960_modinit);
 906
 907 static void __exit wm8960_exit(void)
 908 {
 909         i2c_del_driver(&wm8960_i2c_driver);
 910 }
 911 module_exit(wm8960_exit);
 912
 913
 914 MODULE_DESCRIPTION("ASoC WM8960 driver");
 915 MODULE_AUTHOR("Liam Girdwood");
 916 MODULE_LICENSE("GPL");