sound/soc/codecs/wm8960.c

   1 /*
   2  * wm8960.c  --  WM8960 ALSA SoC Audio driver
   3  *
   4  * Copyright 2007-11 Wolfson Microelectronics, plc
   5  *
   6  * Author: Liam Girdwood
   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/init.h>
  16 #include <linux/delay.h>
  17 #include <linux/pm.h>
  18 #include <linux/clk.h>
  19 #include <linux/i2c.h>
  20 #include <linux/slab.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/initval.h>
  26 #include <sound/tlv.h>
  27 #include <sound/wm8960.h>
  28
  29 #include "wm8960.h"
  30
  31 /* R25 - Power 1 */
  32 #define WM8960_VMID_MASK 0x180
  33 #define WM8960_VREF      0x40
  34
  35 /* R26 - Power 2 */
  36 #define WM8960_PWR2_LOUT1       0x40
  37 #define WM8960_PWR2_ROUT1       0x20
  38 #define WM8960_PWR2_OUT3        0x02
  39
  40 /* R28 - Anti-pop 1 */
  41 #define WM8960_POBCTRL   0x80
  42 #define WM8960_BUFDCOPEN 0x10
  43 #define WM8960_BUFIOEN   0x08
  44 #define WM8960_SOFT_ST   0x04
  45 #define WM8960_HPSTBY    0x01
  46
  47 /* R29 - Anti-pop 2 */
  48 #define WM8960_DISOP     0x40
  49 #define WM8960_DRES_MASK 0x30
  50
  51 /*
  52  * wm8960 register cache
  53  * We can't read the WM8960 register space when we are
  54  * using 2 wire for device control, so we cache them instead.
  55  */
  56 static const struct reg_default wm8960_reg_defaults[] = {
  57         {  0x0, 0x00a7 },
  58         {  0x1, 0x00a7 },
  59         {  0x2, 0x0000 },
  60         {  0x3, 0x0000 },
  61         {  0x4, 0x0000 },
  62         {  0x5, 0x0008 },
  63         {  0x6, 0x0000 },
  64         {  0x7, 0x000a },
  65         {  0x8, 0x01c0 },
  66         {  0x9, 0x0000 },
  67         {  0xa, 0x00ff },
  68         {  0xb, 0x00ff },
  69
  70         { 0x10, 0x0000 },
  71         { 0x11, 0x007b },
  72         { 0x12, 0x0100 },
  73         { 0x13, 0x0032 },
  74         { 0x14, 0x0000 },
  75         { 0x15, 0x00c3 },
  76         { 0x16, 0x00c3 },
  77         { 0x17, 0x01c0 },
  78         { 0x18, 0x0000 },
  79         { 0x19, 0x0000 },
  80         { 0x1a, 0x0000 },
  81         { 0x1b, 0x0000 },
  82         { 0x1c, 0x0000 },
  83         { 0x1d, 0x0000 },
  84
  85         { 0x20, 0x0100 },
  86         { 0x21, 0x0100 },
  87         { 0x22, 0x0050 },
  88
  89         { 0x25, 0x0050 },
  90         { 0x26, 0x0000 },
  91         { 0x27, 0x0000 },
  92         { 0x28, 0x0000 },
  93         { 0x29, 0x0000 },
  94         { 0x2a, 0x0040 },
  95         { 0x2b, 0x0000 },
  96         { 0x2c, 0x0000 },
  97         { 0x2d, 0x0050 },
  98         { 0x2e, 0x0050 },
  99         { 0x2f, 0x0000 },
 100         { 0x30, 0x0002 },
 101         { 0x31, 0x0037 },
 102
 103         { 0x33, 0x0080 },
 104         { 0x34, 0x0008 },
 105         { 0x35, 0x0031 },
 106         { 0x36, 0x0026 },
 107         { 0x37, 0x00e9 },
 108 };
 109
 110 static bool wm8960_volatile(struct device *dev, unsigned int reg)
 111 {
 112         switch (reg) {
 113         case WM8960_RESET:
 114                 return true;
 115         default:
 116                 return false;
 117         }
 118 }
 119
 120 struct wm8960_priv {
 121         struct clk *mclk;
 122         struct regmap *regmap;
 123         int (*set_bias_level)(struct snd_soc_codec *,
 124                               enum snd_soc_bias_level level);
 125         struct snd_soc_dapm_widget *lout1;
 126         struct snd_soc_dapm_widget *rout1;
 127         struct snd_soc_dapm_widget *out3;
 128         bool deemph;
 129         int playback_fs;
 130         int bclk;
 131         int sysclk;
 132         struct wm8960_data pdata;
 133 };
 134
 135 #define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0)
 136
 137 /* enumerated controls */
 138 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
 139         "Right Inverted", "Stereo Inversion"};
 140 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
 141 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
 142 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
 143 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
 144
 145 static const struct soc_enum wm8960_enum[] = {
 146         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
 147         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
 148         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
 149         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
 150         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
 151         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 152 };
 153
 154 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 155
 156 static int wm8960_set_deemph(struct snd_soc_codec *codec)
 157 {
 158         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 159         int val, i, best;
 160
 161         /* If we're using deemphasis select the nearest available sample
 162          * rate.
 163          */
 164         if (wm8960->deemph) {
 165                 best = 1;
 166                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 167                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
 168                             abs(deemph_settings[best] - wm8960->playback_fs))
 169                                 best = i;
 170                 }
 171
 172                 val = best << 1;
 173         } else {
 174                 val = 0;
 175         }
 176
 177         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 178
 179         return snd_soc_update_bits(codec, WM8960_DACCTL1,
 180                                    0x6, val);
 181 }
 182
 183 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 184                              struct snd_ctl_elem_value *ucontrol)
 185 {
 186         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 187         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 188
 189         ucontrol->value.integer.value[0] = wm8960->deemph;
 190         return 0;
 191 }
 192
 193 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 194                              struct snd_ctl_elem_value *ucontrol)
 195 {
 196         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 197         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 198         int deemph = ucontrol->value.integer.value[0];
 199
 200         if (deemph > 1)
 201                 return -EINVAL;
 202
 203         wm8960->deemph = deemph;
 204
 205         return wm8960_set_deemph(codec);
 206 }
 207
 208 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
 209 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
 210 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 211 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 212 static const DECLARE_TLV_DB_SCALE(boost_tlv, -1500, 300, 1);
 213
 214 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 215 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 216                  0, 63, 0, adc_tlv),
 217 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 218         6, 1, 0),
 219 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 220         7, 1, 0),
 221
 222 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume",
 223                WM8960_INBMIX1, 4, 7, 0, boost_tlv),
 224 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume",
 225                WM8960_INBMIX1, 1, 7, 0, boost_tlv),
 226 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume",
 227                WM8960_INBMIX2, 4, 7, 0, boost_tlv),
 228 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume",
 229                WM8960_INBMIX2, 1, 7, 0, boost_tlv),
 230
 231 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 232                  0, 255, 0, dac_tlv),
 233
 234 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 235                  0, 127, 0, out_tlv),
 236 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 237         7, 1, 0),
 238
 239 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 240                  0, 127, 0, out_tlv),
 241 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 242         7, 1, 0),
 243 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 244 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 245
 246 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 247 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 248 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 249
 250 SOC_ENUM("DAC Polarity", wm8960_enum[1]),
 251 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 252                     wm8960_get_deemph, wm8960_put_deemph),
 253
 254 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 255 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 256 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 257 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 258
 259 SOC_ENUM("ALC Function", wm8960_enum[4]),
 260 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 261 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 262 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 263 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 264 SOC_ENUM("ALC Mode", wm8960_enum[5]),
 265 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 266 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 267
 268 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 269 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 270
 271 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC,
 272         0, 255, 0, adc_tlv),
 273
 274 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 275                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 276 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 277                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 278 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 279                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 280 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 281                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 282 };
 283
 284 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 285 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 286 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 287 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 288 };
 289
 290 static const struct snd_kcontrol_new wm8960_lin[] = {
 291 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 292 };
 293
 294 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 295 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 296 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 297 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 298 };
 299
 300 static const struct snd_kcontrol_new wm8960_rin[] = {
 301 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 302 };
 303
 304 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 305 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 306 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 307 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 308 };
 309
 310 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 311 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 312 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 313 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 314 };
 315
 316 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 317 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 318 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 319 };
 320
 321 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 322 SND_SOC_DAPM_INPUT("LINPUT1"),
 323 SND_SOC_DAPM_INPUT("RINPUT1"),
 324 SND_SOC_DAPM_INPUT("LINPUT2"),
 325 SND_SOC_DAPM_INPUT("RINPUT2"),
 326 SND_SOC_DAPM_INPUT("LINPUT3"),
 327 SND_SOC_DAPM_INPUT("RINPUT3"),
 328
 329 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
 330
 331 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 332                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 333 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 334                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 335
 336 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 337                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 338 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 339                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 340
 341 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0),
 342 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0),
 343
 344 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 345 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 346
 347 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 348         &wm8960_loutput_mixer[0],
 349         ARRAY_SIZE(wm8960_loutput_mixer)),
 350 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 351         &wm8960_routput_mixer[0],
 352         ARRAY_SIZE(wm8960_routput_mixer)),
 353
 354 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 355 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 356
 357 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 358 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 359
 360 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 361 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 362
 363 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 364 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 365 SND_SOC_DAPM_OUTPUT("HP_L"),
 366 SND_SOC_DAPM_OUTPUT("HP_R"),
 367 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 368 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 369 SND_SOC_DAPM_OUTPUT("OUT3"),
 370 };
 371
 372 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 373 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 374         &wm8960_mono_out[0],
 375         ARRAY_SIZE(wm8960_mono_out)),
 376 };
 377
 378 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 379 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 380 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 381 };
 382
 383 static const struct snd_soc_dapm_route audio_paths[] = {
 384         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 385         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 386         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 387
 388         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 389         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 390         { "Left Input Mixer", NULL, "LINPUT2" },
 391         { "Left Input Mixer", NULL, "LINPUT3" },
 392
 393         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 394         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 395         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 396
 397         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 398         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 399         { "Right Input Mixer", NULL, "RINPUT2" },
 400         { "Right Input Mixer", NULL, "RINPUT3" },
 401
 402         { "Left ADC", NULL, "Left Input Mixer" },
 403         { "Right ADC", NULL, "Right Input Mixer" },
 404
 405         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 406         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 407         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 408
 409         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 410         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 411         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 412
 413         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 414         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 415
 416         { "HP_L", NULL, "LOUT1 PGA" },
 417         { "HP_R", NULL, "ROUT1 PGA" },
 418
 419         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 420         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 421
 422         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 423         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 424
 425         { "SPK_LN", NULL, "Left Speaker Output" },
 426         { "SPK_LP", NULL, "Left Speaker Output" },
 427         { "SPK_RN", NULL, "Right Speaker Output" },
 428         { "SPK_RP", NULL, "Right Speaker Output" },
 429 };
 430
 431 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 432         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 433         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 434
 435         { "OUT3", NULL, "Mono Output Mixer", }
 436 };
 437
 438 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 439         { "HP_L", NULL, "OUT3 VMID" },
 440         { "HP_R", NULL, "OUT3 VMID" },
 441
 442         { "OUT3 VMID", NULL, "Left Output Mixer" },
 443         { "OUT3 VMID", NULL, "Right Output Mixer" },
 444 };
 445
 446 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 447 {
 448         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 449         struct wm8960_data *pdata = &wm8960->pdata;
 450         struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
 451         struct snd_soc_dapm_widget *w;
 452
 453         snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
 454                                   ARRAY_SIZE(wm8960_dapm_widgets));
 455
 456         snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
 457
 458         /* In capless mode OUT3 is used to provide VMID for the
 459          * headphone outputs, otherwise it is used as a mono mixer.
 460          */
 461         if (pdata && pdata->capless) {
 462                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
 463                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 464
 465                 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
 466                                         ARRAY_SIZE(audio_paths_capless));
 467         } else {
 468                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
 469                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 470
 471                 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
 472                                         ARRAY_SIZE(audio_paths_out3));
 473         }
 474
 475         /* We need to power up the headphone output stage out of
 476          * sequence for capless mode.  To save scanning the widget
 477          * list each time to find the desired power state do so now
 478          * and save the result.
 479          */
 480         list_for_each_entry(w, &codec->component.card->widgets, list) {
 481                 if (w->dapm != dapm)
 482                         continue;
 483                 if (strcmp(w->name, "LOUT1 PGA") == 0)
 484                         wm8960->lout1 = w;
 485                 if (strcmp(w->name, "ROUT1 PGA") == 0)
 486                         wm8960->rout1 = w;
 487                 if (strcmp(w->name, "OUT3 VMID") == 0)
 488                         wm8960->out3 = w;
 489         }
 490
 491         return 0;
 492 }
 493
 494 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 495                 unsigned int fmt)
 496 {
 497         struct snd_soc_codec *codec = codec_dai->codec;
 498         u16 iface = 0;
 499
 500         /* set master/slave audio interface */
 501         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 502         case SND_SOC_DAIFMT_CBM_CFM:
 503                 iface |= 0x0040;
 504                 break;
 505         case SND_SOC_DAIFMT_CBS_CFS:
 506                 break;
 507         default:
 508                 return -EINVAL;
 509         }
 510
 511         /* interface format */
 512         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 513         case SND_SOC_DAIFMT_I2S:
 514                 iface |= 0x0002;
 515                 break;
 516         case SND_SOC_DAIFMT_RIGHT_J:
 517                 break;
 518         case SND_SOC_DAIFMT_LEFT_J:
 519                 iface |= 0x0001;
 520                 break;
 521         case SND_SOC_DAIFMT_DSP_A:
 522                 iface |= 0x0003;
 523                 break;
 524         case SND_SOC_DAIFMT_DSP_B:
 525                 iface |= 0x0013;
 526                 break;
 527         default:
 528                 return -EINVAL;
 529         }
 530
 531         /* clock inversion */
 532         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 533         case SND_SOC_DAIFMT_NB_NF:
 534                 break;
 535         case SND_SOC_DAIFMT_IB_IF:
 536                 iface |= 0x0090;
 537                 break;
 538         case SND_SOC_DAIFMT_IB_NF:
 539                 iface |= 0x0080;
 540                 break;
 541         case SND_SOC_DAIFMT_NB_IF:
 542                 iface |= 0x0010;
 543                 break;
 544         default:
 545                 return -EINVAL;
 546         }
 547
 548         /* set iface */
 549         snd_soc_write(codec, WM8960_IFACE1, iface);
 550         return 0;
 551 }
 552
 553 static struct {
 554         int rate;
 555         unsigned int val;
 556 } alc_rates[] = {
 557         { 48000, 0 },
 558         { 44100, 0 },
 559         { 32000, 1 },
 560         { 22050, 2 },
 561         { 24000, 2 },
 562         { 16000, 3 },
 563         { 11025, 4 },
 564         { 12000, 4 },
 565         {  8000, 5 },
 566 };
 567
 568 /* Multiply 256 for internal 256 div */
 569 static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 };
 570
 571 /* Multiply 10 to eliminate decimials */
 572 static const int bclk_divs[] = {
 573         10, 15, 20, 30, 40, 55, 60, 80, 110,
 574         120, 160, 220, 240, 320, 320, 320
 575 };
 576
 577 static void wm8960_configure_clocking(struct snd_soc_codec *codec,
 578                 bool tx, int lrclk)
 579 {
 580         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 581         u16 iface1 = snd_soc_read(codec, WM8960_IFACE1);
 582         u16 iface2 = snd_soc_read(codec, WM8960_IFACE2);
 583         u32 sysclk;
 584         int i, j;
 585
 586         if (!(iface1 & (1<<6))) {
 587                 dev_dbg(codec->dev,
 588                         "Codec is slave mode, no need to configure clock\n");
 589                 return;
 590         }
 591
 592         if (!wm8960->sysclk) {
 593                 dev_dbg(codec->dev, "No SYSCLK configured\n");
 594                 return;
 595         }
 596
 597         if (!wm8960->bclk || !lrclk) {
 598                 dev_dbg(codec->dev, "No audio clocks configured\n");
 599                 return;
 600         }
 601
 602         for (i = 0; i < ARRAY_SIZE(dac_divs); ++i) {
 603                 if (wm8960->sysclk == lrclk * dac_divs[i]) {
 604                         for (j = 0; j < ARRAY_SIZE(bclk_divs); ++j) {
 605                                 sysclk = wm8960->bclk * bclk_divs[j] / 10;
 606                                 if (wm8960->sysclk == sysclk)
 607                                         break;
 608                         }
 609                         if(j != ARRAY_SIZE(bclk_divs))
 610                                 break;
 611                 }
 612         }
 613
 614         if (i == ARRAY_SIZE(dac_divs)) {
 615                 dev_err(codec->dev, "Unsupported sysclk %d\n", wm8960->sysclk);
 616                 return;
 617         }
 618
 619         /*
 620          * configure frame clock. If ADCLRC configure as GPIO pin, DACLRC
 621          * pin is used as a frame clock for ADCs and DACs.
 622          */
 623         if (iface2 & (1<<6))
 624                 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x7 << 3, i << 3);
 625         else if (tx)
 626                 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x7 << 3, i << 3);
 627         else if (!tx)
 628                 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x7 << 6, i << 6);
 629
 630         /* configure bit clock */
 631         snd_soc_update_bits(codec, WM8960_CLOCK2, 0xf, j);
 632 }
 633
 634 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 635                             struct snd_pcm_hw_params *params,
 636                             struct snd_soc_dai *dai)
 637 {
 638         struct snd_soc_codec *codec = dai->codec;
 639         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 640         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 641         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 642         int i;
 643
 644         wm8960->bclk = snd_soc_params_to_bclk(params);
 645         if (params_channels(params) == 1)
 646                 wm8960->bclk *= 2;
 647
 648         /* bit size */
 649         switch (params_width(params)) {
 650         case 16:
 651                 break;
 652         case 20:
 653                 iface |= 0x0004;
 654                 break;
 655         case 24:
 656                 iface |= 0x0008;
 657                 break;
 658         case 32:
 659                 /* right justify mode does not support 32 word length */
 660                 if ((iface & 0x3) != 0) {
 661                         iface |= 0x000c;
 662                         break;
 663                 }
 664         default:
 665                 dev_err(codec->dev, "unsupported width %d\n",
 666                         params_width(params));
 667                 return -EINVAL;
 668         }
 669
 670         /* Update filters for the new rate */
 671         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 672                 wm8960->playback_fs = params_rate(params);
 673                 wm8960_set_deemph(codec);
 674         } else {
 675                 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
 676                         if (alc_rates[i].rate == params_rate(params))
 677                                 snd_soc_update_bits(codec,
 678                                                     WM8960_ADDCTL3, 0x7,
 679                                                     alc_rates[i].val);
 680         }
 681
 682         /* set iface */
 683         snd_soc_write(codec, WM8960_IFACE1, iface);
 684
 685         wm8960_configure_clocking(codec, tx, params_rate(params));
 686
 687         return 0;
 688 }
 689
 690 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 691 {
 692         struct snd_soc_codec *codec = dai->codec;
 693
 694         if (mute)
 695                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
 696         else
 697                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
 698         return 0;
 699 }
 700
 701 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 702                                       enum snd_soc_bias_level level)
 703 {
 704         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 705         int ret;
 706
 707         switch (level) {
 708         case SND_SOC_BIAS_ON:
 709                 break;
 710
 711         case SND_SOC_BIAS_PREPARE:
 712                 switch (snd_soc_codec_get_bias_level(codec)) {
 713                 case SND_SOC_BIAS_STANDBY:
 714                         if (!IS_ERR(wm8960->mclk)) {
 715                                 ret = clk_prepare_enable(wm8960->mclk);
 716                                 if (ret) {
 717                                         dev_err(codec->dev,
 718                                                 "Failed to enable MCLK: %d\n",
 719                                                 ret);
 720                                         return ret;
 721                                 }
 722                         }
 723
 724                         /* Set VMID to 2x50k */
 725                         snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
 726                         break;
 727
 728                 case SND_SOC_BIAS_ON:
 729                         if (!IS_ERR(wm8960->mclk))
 730                                 clk_disable_unprepare(wm8960->mclk);
 731                         break;
 732
 733                 default:
 734                         break;
 735                 }
 736
 737                 break;
 738
 739         case SND_SOC_BIAS_STANDBY:
 740                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
 741                         regcache_sync(wm8960->regmap);
 742
 743                         /* Enable anti-pop features */
 744                         snd_soc_write(codec, WM8960_APOP1,
 745                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 746                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 747
 748                         /* Enable & ramp VMID at 2x50k */
 749                         snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
 750                         msleep(100);
 751
 752                         /* Enable VREF */
 753                         snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
 754                                             WM8960_VREF);
 755
 756                         /* Disable anti-pop features */
 757                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 758                 }
 759
 760                 /* Set VMID to 2x250k */
 761                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
 762                 break;
 763
 764         case SND_SOC_BIAS_OFF:
 765                 /* Enable anti-pop features */
 766                 snd_soc_write(codec, WM8960_APOP1,
 767                              WM8960_POBCTRL | WM8960_SOFT_ST |
 768                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 769
 770                 /* Disable VMID and VREF, let them discharge */
 771                 snd_soc_write(codec, WM8960_POWER1, 0);
 772                 msleep(600);
 773                 break;
 774         }
 775
 776         return 0;
 777 }
 778
 779 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 780                                          enum snd_soc_bias_level level)
 781 {
 782         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 783         int reg, ret;
 784
 785         switch (level) {
 786         case SND_SOC_BIAS_ON:
 787                 break;
 788
 789         case SND_SOC_BIAS_PREPARE:
 790                 switch (snd_soc_codec_get_bias_level(codec)) {
 791                 case SND_SOC_BIAS_STANDBY:
 792                         /* Enable anti pop mode */
 793                         snd_soc_update_bits(codec, WM8960_APOP1,
 794                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 795                                             WM8960_BUFDCOPEN,
 796                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 797                                             WM8960_BUFDCOPEN);
 798
 799                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 800                         reg = 0;
 801                         if (wm8960->lout1 && wm8960->lout1->power)
 802                                 reg |= WM8960_PWR2_LOUT1;
 803                         if (wm8960->rout1 && wm8960->rout1->power)
 804                                 reg |= WM8960_PWR2_ROUT1;
 805                         if (wm8960->out3 && wm8960->out3->power)
 806                                 reg |= WM8960_PWR2_OUT3;
 807                         snd_soc_update_bits(codec, WM8960_POWER2,
 808                                             WM8960_PWR2_LOUT1 |
 809                                             WM8960_PWR2_ROUT1 |
 810                                             WM8960_PWR2_OUT3, reg);
 811
 812                         /* Enable VMID at 2*50k */
 813                         snd_soc_update_bits(codec, WM8960_POWER1,
 814                                             WM8960_VMID_MASK, 0x80);
 815
 816                         /* Ramp */
 817                         msleep(100);
 818
 819                         /* Enable VREF */
 820                         snd_soc_update_bits(codec, WM8960_POWER1,
 821                                             WM8960_VREF, WM8960_VREF);
 822
 823                         msleep(100);
 824
 825                         if (!IS_ERR(wm8960->mclk)) {
 826                                 ret = clk_prepare_enable(wm8960->mclk);
 827                                 if (ret) {
 828                                         dev_err(codec->dev,
 829                                                 "Failed to enable MCLK: %d\n",
 830                                                 ret);
 831                                         return ret;
 832                                 }
 833                         }
 834                         break;
 835
 836                 case SND_SOC_BIAS_ON:
 837                         if (!IS_ERR(wm8960->mclk))
 838                                 clk_disable_unprepare(wm8960->mclk);
 839
 840                         /* Enable anti-pop mode */
 841                         snd_soc_update_bits(codec, WM8960_APOP1,
 842                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 843                                             WM8960_BUFDCOPEN,
 844                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 845                                             WM8960_BUFDCOPEN);
 846
 847                         /* Disable VMID and VREF */
 848                         snd_soc_update_bits(codec, WM8960_POWER1,
 849                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 850                         break;
 851
 852                 case SND_SOC_BIAS_OFF:
 853                         regcache_sync(wm8960->regmap);
 854                         break;
 855                 default:
 856                         break;
 857                 }
 858                 break;
 859
 860         case SND_SOC_BIAS_STANDBY:
 861                 switch (snd_soc_codec_get_bias_level(codec)) {
 862                 case SND_SOC_BIAS_PREPARE:
 863                         /* Disable HP discharge */
 864                         snd_soc_update_bits(codec, WM8960_APOP2,
 865                                             WM8960_DISOP | WM8960_DRES_MASK,
 866                                             0);
 867
 868                         /* Disable anti-pop features */
 869                         snd_soc_update_bits(codec, WM8960_APOP1,
 870                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 871                                             WM8960_BUFDCOPEN,
 872                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 873                                             WM8960_BUFDCOPEN);
 874                         break;
 875
 876                 default:
 877                         break;
 878                 }
 879                 break;
 880
 881         case SND_SOC_BIAS_OFF:
 882                 break;
 883         }
 884
 885         return 0;
 886 }
 887
 888 /* PLL divisors */
 889 struct _pll_div {
 890         u32 pre_div:1;
 891         u32 n:4;
 892         u32 k:24;
 893 };
 894
 895 /* The size in bits of the pll divide multiplied by 10
 896  * to allow rounding later */
 897 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 898
 899 static int pll_factors(unsigned int source, unsigned int target,
 900                        struct _pll_div *pll_div)
 901 {
 902         unsigned long long Kpart;
 903         unsigned int K, Ndiv, Nmod;
 904
 905         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 906
 907         /* Scale up target to PLL operating frequency */
 908         target *= 4;
 909
 910         Ndiv = target / source;
 911         if (Ndiv < 6) {
 912                 source >>= 1;
 913                 pll_div->pre_div = 1;
 914                 Ndiv = target / source;
 915         } else
 916                 pll_div->pre_div = 0;
 917
 918         if ((Ndiv < 6) || (Ndiv > 12)) {
 919                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 920                 return -EINVAL;
 921         }
 922
 923         pll_div->n = Ndiv;
 924         Nmod = target % source;
 925         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 926
 927         do_div(Kpart, source);
 928
 929         K = Kpart & 0xFFFFFFFF;
 930
 931         /* Check if we need to round */
 932         if ((K % 10) >= 5)
 933                 K += 5;
 934
 935         /* Move down to proper range now rounding is done */
 936         K /= 10;
 937
 938         pll_div->k = K;
 939
 940         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 941                  pll_div->n, pll_div->k, pll_div->pre_div);
 942
 943         return 0;
 944 }
 945
 946 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 947                 int source, unsigned int freq_in, unsigned int freq_out)
 948 {
 949         struct snd_soc_codec *codec = codec_dai->codec;
 950         u16 reg;
 951         static struct _pll_div pll_div;
 952         int ret;
 953
 954         if (freq_in && freq_out) {
 955                 ret = pll_factors(freq_in, freq_out, &pll_div);
 956                 if (ret != 0)
 957                         return ret;
 958         }
 959
 960         /* Disable the PLL: even if we are changing the frequency the
 961          * PLL needs to be disabled while we do so. */
 962         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
 963         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
 964
 965         if (!freq_in || !freq_out)
 966                 return 0;
 967
 968         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 969         reg |= pll_div.pre_div << 4;
 970         reg |= pll_div.n;
 971
 972         if (pll_div.k) {
 973                 reg |= 0x20;
 974
 975                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 16) & 0xff);
 976                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 8) & 0xff);
 977                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0xff);
 978         }
 979         snd_soc_write(codec, WM8960_PLL1, reg);
 980
 981         /* Turn it on */
 982         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
 983         msleep(250);
 984         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
 985
 986         return 0;
 987 }
 988
 989 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 990                 int div_id, int div)
 991 {
 992         struct snd_soc_codec *codec = codec_dai->codec;
 993         u16 reg;
 994
 995         switch (div_id) {
 996         case WM8960_SYSCLKDIV:
 997                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 998                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 999                 break;
1000         case WM8960_DACDIV:
1001                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
1002                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
1003                 break;
1004         case WM8960_OPCLKDIV:
1005                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
1006                 snd_soc_write(codec, WM8960_PLL1, reg | div);
1007                 break;
1008         case WM8960_DCLKDIV:
1009                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
1010                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
1011                 break;
1012         case WM8960_TOCLKSEL:
1013                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
1014                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
1015                 break;
1016         default:
1017                 return -EINVAL;
1018         }
1019
1020         return 0;
1021 }
1022
1023 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
1024                                  enum snd_soc_bias_level level)
1025 {
1026         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1027
1028         return wm8960->set_bias_level(codec, level);
1029 }
1030
1031 static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
1032                                         unsigned int freq, int dir)
1033 {
1034         struct snd_soc_codec *codec = dai->codec;
1035         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1036
1037         switch (clk_id) {
1038         case WM8960_SYSCLK_MCLK:
1039                 snd_soc_update_bits(codec, WM8960_CLOCK1,
1040                                         0x1, WM8960_SYSCLK_MCLK);
1041                 break;
1042         case WM8960_SYSCLK_PLL:
1043                 snd_soc_update_bits(codec, WM8960_CLOCK1,
1044                                         0x1, WM8960_SYSCLK_PLL);
1045                 break;
1046         default:
1047                 return -EINVAL;
1048         }
1049
1050         wm8960->sysclk = freq;
1051
1052         return 0;
1053 }
1054
1055 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
1056
1057 #define WM8960_FORMATS \
1058         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1059         SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1060
1061 static const struct snd_soc_dai_ops wm8960_dai_ops = {
1062         .hw_params = wm8960_hw_params,
1063         .digital_mute = wm8960_mute,
1064         .set_fmt = wm8960_set_dai_fmt,
1065         .set_clkdiv = wm8960_set_dai_clkdiv,
1066         .set_pll = wm8960_set_dai_pll,
1067         .set_sysclk = wm8960_set_dai_sysclk,
1068 };
1069
1070 static struct snd_soc_dai_driver wm8960_dai = {
1071         .name = "wm8960-hifi",
1072         .playback = {
1073                 .stream_name = "Playback",
1074                 .channels_min = 1,
1075                 .channels_max = 2,
1076                 .rates = WM8960_RATES,
1077                 .formats = WM8960_FORMATS,},
1078         .capture = {
1079                 .stream_name = "Capture",
1080                 .channels_min = 1,
1081                 .channels_max = 2,
1082                 .rates = WM8960_RATES,
1083                 .formats = WM8960_FORMATS,},
1084         .ops = &wm8960_dai_ops,
1085         .symmetric_rates = 1,
1086 };
1087
1088 static int wm8960_probe(struct snd_soc_codec *codec)
1089 {
1090         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1091         struct wm8960_data *pdata = &wm8960->pdata;
1092
1093         if (pdata->capless)
1094                 wm8960->set_bias_level = wm8960_set_bias_level_capless;
1095         else
1096                 wm8960->set_bias_level = wm8960_set_bias_level_out3;
1097
1098         snd_soc_add_codec_controls(codec, wm8960_snd_controls,
1099                                      ARRAY_SIZE(wm8960_snd_controls));
1100         wm8960_add_widgets(codec);
1101
1102         return 0;
1103 }
1104
1105 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
1106         .probe =        wm8960_probe,
1107         .set_bias_level = wm8960_set_bias_level,
1108         .suspend_bias_off = true,
1109 };
1110
1111 static const struct regmap_config wm8960_regmap = {
1112         .reg_bits = 7,
1113         .val_bits = 9,
1114         .max_register = WM8960_PLL4,
1115
1116         .reg_defaults = wm8960_reg_defaults,
1117         .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
1118         .cache_type = REGCACHE_RBTREE,
1119
1120         .volatile_reg = wm8960_volatile,
1121 };
1122
1123 static void wm8960_set_pdata_from_of(struct i2c_client *i2c,
1124                                 struct wm8960_data *pdata)
1125 {
1126         const struct device_node *np = i2c->dev.of_node;
1127
1128         if (of_property_read_bool(np, "wlf,capless"))
1129                 pdata->capless = true;
1130
1131         if (of_property_read_bool(np, "wlf,shared-lrclk"))
1132                 pdata->shared_lrclk = true;
1133 }
1134
1135 static int wm8960_i2c_probe(struct i2c_client *i2c,
1136                             const struct i2c_device_id *id)
1137 {
1138         struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
1139         struct wm8960_priv *wm8960;
1140         int ret;
1141
1142         wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
1143                               GFP_KERNEL);
1144         if (wm8960 == NULL)
1145                 return -ENOMEM;
1146
1147         wm8960->mclk = devm_clk_get(&i2c->dev, "mclk");
1148         if (IS_ERR(wm8960->mclk)) {
1149                 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER)
1150                         return -EPROBE_DEFER;
1151         }
1152
1153         wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
1154         if (IS_ERR(wm8960->regmap))
1155                 return PTR_ERR(wm8960->regmap);
1156
1157         if (pdata)
1158                 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data));
1159         else if (i2c->dev.of_node)
1160                 wm8960_set_pdata_from_of(i2c, &wm8960->pdata);
1161
1162         ret = wm8960_reset(wm8960->regmap);
1163         if (ret != 0) {
1164                 dev_err(&i2c->dev, "Failed to issue reset\n");
1165                 return ret;
1166         }
1167
1168         if (wm8960->pdata.shared_lrclk) {
1169                 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
1170                                          0x4, 0x4);
1171                 if (ret != 0) {
1172                         dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
1173                                 ret);
1174                         return ret;
1175                 }
1176         }
1177
1178         /* Latch the update bits */
1179         regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100);
1180         regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100);
1181         regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100);
1182         regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100);
1183         regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100);
1184         regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100);
1185         regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100);
1186         regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100);
1187         regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100);
1188         regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100);
1189
1190         i2c_set_clientdata(i2c, wm8960);
1191
1192         ret = snd_soc_register_codec(&i2c->dev,
1193                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
1194
1195         return ret;
1196 }
1197
1198 static int wm8960_i2c_remove(struct i2c_client *client)
1199 {
1200         snd_soc_unregister_codec(&client->dev);
1201         return 0;
1202 }
1203
1204 static const struct i2c_device_id wm8960_i2c_id[] = {
1205         { "wm8960", 0 },
1206         { }
1207 };
1208 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1209
1210 static const struct of_device_id wm8960_of_match[] = {
1211        { .compatible = "wlf,wm8960", },
1212        { }
1213 };
1214 MODULE_DEVICE_TABLE(of, wm8960_of_match);
1215
1216 static struct i2c_driver wm8960_i2c_driver = {
1217         .driver = {
1218                 .name = "wm8960",
1219                 .owner = THIS_MODULE,
1220                 .of_match_table = wm8960_of_match,
1221         },
1222         .probe =    wm8960_i2c_probe,
1223         .remove =   wm8960_i2c_remove,
1224         .id_table = wm8960_i2c_id,
1225 };
1226
1227 module_i2c_driver(wm8960_i2c_driver);
1228
1229 MODULE_DESCRIPTION("ASoC WM8960 driver");
1230 MODULE_AUTHOR("Liam Girdwood");
1231 MODULE_LICENSE("GPL");