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 <linux/slab.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/soc.h>
  23 #include <sound/soc-dapm.h>
  24 #include <sound/initval.h>
  25 #include <sound/tlv.h>
  26 #include <sound/wm8960.h>
  27
  28 #include "wm8960.h"
  29
  30 #define AUDIO_NAME "wm8960"
  31
  32 struct snd_soc_codec_device soc_codec_dev_wm8960;
  33
  34 /* R25 - Power 1 */
  35 #define WM8960_VMID_MASK 0x180
  36 #define WM8960_VREF      0x40
  37
  38 /* R26 - Power 2 */
  39 #define WM8960_PWR2_LOUT1       0x40
  40 #define WM8960_PWR2_ROUT1       0x20
  41 #define WM8960_PWR2_OUT3        0x02
  42
  43 /* R28 - Anti-pop 1 */
  44 #define WM8960_POBCTRL   0x80
  45 #define WM8960_BUFDCOPEN 0x10
  46 #define WM8960_BUFIOEN   0x08
  47 #define WM8960_SOFT_ST   0x04
  48 #define WM8960_HPSTBY    0x01
  49
  50 /* R29 - Anti-pop 2 */
  51 #define WM8960_DISOP     0x40
  52 #define WM8960_DRES_MASK 0x30
  53
  54 /*
  55  * wm8960 register cache
  56  * We can't read the WM8960 register space when we are
  57  * using 2 wire for device control, so we cache them instead.
  58  */
  59 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  60         0x0097, 0x0097, 0x0000, 0x0000,
  61         0x0000, 0x0008, 0x0000, 0x000a,
  62         0x01c0, 0x0000, 0x00ff, 0x00ff,
  63         0x0000, 0x0000, 0x0000, 0x0000,
  64         0x0000, 0x007b, 0x0100, 0x0032,
  65         0x0000, 0x00c3, 0x00c3, 0x01c0,
  66         0x0000, 0x0000, 0x0000, 0x0000,
  67         0x0000, 0x0000, 0x0000, 0x0000,
  68         0x0100, 0x0100, 0x0050, 0x0050,
  69         0x0050, 0x0050, 0x0000, 0x0000,
  70         0x0000, 0x0000, 0x0040, 0x0000,
  71         0x0000, 0x0050, 0x0050, 0x0000,
  72         0x0002, 0x0037, 0x004d, 0x0080,
  73         0x0008, 0x0031, 0x0026, 0x00e9,
  74 };
  75
  76 struct wm8960_priv {
  77         u16 reg_cache[WM8960_CACHEREGNUM];
  78         struct snd_soc_codec codec;
  79         struct snd_soc_dapm_widget *lout1;
  80         struct snd_soc_dapm_widget *rout1;
  81         struct snd_soc_dapm_widget *out3;
  82 };
  83
  84 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  85
  86 /* enumerated controls */
  87 static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
  88 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  89         "Right Inverted", "Stereo Inversion"};
  90 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  91 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  92 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  93 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  94
  95 static const struct soc_enum wm8960_enum[] = {
  96         SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph),
  97         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  98         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
  99         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
 100         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
 101         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
 102         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 103 };
 104
 105 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 106 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 107 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 108 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 109
 110 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 111 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 112                  0, 63, 0, adc_tlv),
 113 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 114         6, 1, 0),
 115 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 116         7, 1, 0),
 117
 118 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 119                  0, 255, 0, dac_tlv),
 120
 121 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 122                  0, 127, 0, out_tlv),
 123 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 124         7, 1, 0),
 125
 126 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 127                  0, 127, 0, out_tlv),
 128 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 129         7, 1, 0),
 130 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 131 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 132
 133 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 134 SOC_ENUM("ADC Polarity", wm8960_enum[1]),
 135 SOC_ENUM("Playback De-emphasis", wm8960_enum[0]),
 136 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 137
 138 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 139
 140 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]),
 141 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]),
 142 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 143 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 144
 145 SOC_ENUM("ALC Function", wm8960_enum[5]),
 146 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 147 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 148 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 149 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 150 SOC_ENUM("ALC Mode", wm8960_enum[6]),
 151 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 152 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 153
 154 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 155 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 156
 157 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 158         0, 127, 0),
 159
 160 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 161                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 162 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 163                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 164 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 165                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 166 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 167                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 168 };
 169
 170 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 171 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 172 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 173 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 174 };
 175
 176 static const struct snd_kcontrol_new wm8960_lin[] = {
 177 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 178 };
 179
 180 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 181 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 182 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 183 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 184 };
 185
 186 static const struct snd_kcontrol_new wm8960_rin[] = {
 187 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 188 };
 189
 190 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 191 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 192 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 193 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 194 };
 195
 196 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 197 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 198 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 199 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 200 };
 201
 202 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 203 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 204 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 205 };
 206
 207 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 208 SND_SOC_DAPM_INPUT("LINPUT1"),
 209 SND_SOC_DAPM_INPUT("RINPUT1"),
 210 SND_SOC_DAPM_INPUT("LINPUT2"),
 211 SND_SOC_DAPM_INPUT("RINPUT2"),
 212 SND_SOC_DAPM_INPUT("LINPUT3"),
 213 SND_SOC_DAPM_INPUT("RINPUT3"),
 214
 215 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
 216
 217 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 218                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 219 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 220                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 221
 222 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 223                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 224 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 225                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 226
 227 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 228 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 229
 230 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 231 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 232
 233 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 234         &wm8960_loutput_mixer[0],
 235         ARRAY_SIZE(wm8960_loutput_mixer)),
 236 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 237         &wm8960_routput_mixer[0],
 238         ARRAY_SIZE(wm8960_routput_mixer)),
 239
 240 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 241 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 242
 243 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 244 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 245
 246 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 247 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 248
 249 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 250 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 251 SND_SOC_DAPM_OUTPUT("HP_L"),
 252 SND_SOC_DAPM_OUTPUT("HP_R"),
 253 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 254 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 255 SND_SOC_DAPM_OUTPUT("OUT3"),
 256 };
 257
 258 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 259 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 260         &wm8960_mono_out[0],
 261         ARRAY_SIZE(wm8960_mono_out)),
 262 };
 263
 264 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 265 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 266 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 267 };
 268
 269 static const struct snd_soc_dapm_route audio_paths[] = {
 270         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 271         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 272         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 273
 274         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 275         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 276         { "Left Input Mixer", NULL, "LINPUT2" },
 277         { "Left Input Mixer", NULL, "LINPUT3" },
 278
 279         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 280         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 281         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 282
 283         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 284         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 285         { "Right Input Mixer", NULL, "RINPUT2" },
 286         { "Right Input Mixer", NULL, "LINPUT3" },
 287
 288         { "Left ADC", NULL, "Left Input Mixer" },
 289         { "Right ADC", NULL, "Right Input Mixer" },
 290
 291         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 292         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 293         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 294
 295         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 296         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 297         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 298
 299         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 300         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 301
 302         { "HP_L", NULL, "LOUT1 PGA" },
 303         { "HP_R", NULL, "ROUT1 PGA" },
 304
 305         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 306         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 307
 308         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 309         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 310
 311         { "SPK_LN", NULL, "Left Speaker Output" },
 312         { "SPK_LP", NULL, "Left Speaker Output" },
 313         { "SPK_RN", NULL, "Right Speaker Output" },
 314         { "SPK_RP", NULL, "Right Speaker Output" },
 315 };
 316
 317 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 318         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 319         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 320
 321         { "OUT3", NULL, "Mono Output Mixer", }
 322 };
 323
 324 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 325         { "HP_L", NULL, "OUT3 VMID" },
 326         { "HP_R", NULL, "OUT3 VMID" },
 327
 328         { "OUT3 VMID", NULL, "Left Output Mixer" },
 329         { "OUT3 VMID", NULL, "Right Output Mixer" },
 330 };
 331
 332 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 333 {
 334         struct wm8960_data *pdata = codec->dev->platform_data;
 335         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 336         struct snd_soc_dapm_widget *w;
 337
 338         snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
 339                                   ARRAY_SIZE(wm8960_dapm_widgets));
 340
 341         snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
 342
 343         /* In capless mode OUT3 is used to provide VMID for the
 344          * headphone outputs, otherwise it is used as a mono mixer.
 345          */
 346         if (pdata && pdata->capless) {
 347                 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_capless,
 348                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 349
 350                 snd_soc_dapm_add_routes(codec, audio_paths_capless,
 351                                         ARRAY_SIZE(audio_paths_capless));
 352         } else {
 353                 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_out3,
 354                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 355
 356                 snd_soc_dapm_add_routes(codec, audio_paths_out3,
 357                                         ARRAY_SIZE(audio_paths_out3));
 358         }
 359
 360         /* We need to power up the headphone output stage out of
 361          * sequence for capless mode.  To save scanning the widget
 362          * list each time to find the desired power state do so now
 363          * and save the result.
 364          */
 365         list_for_each_entry(w, &codec->dapm_widgets, list) {
 366                 if (strcmp(w->name, "LOUT1 PGA") == 0)
 367                         wm8960->lout1 = w;
 368                 if (strcmp(w->name, "ROUT1 PGA") == 0)
 369                         wm8960->rout1 = w;
 370                 if (strcmp(w->name, "OUT3 VMID") == 0)
 371                         wm8960->out3 = w;
 372         }
 373
 374         return 0;
 375 }
 376
 377 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 378                 unsigned int fmt)
 379 {
 380         struct snd_soc_codec *codec = codec_dai->codec;
 381         u16 iface = 0;
 382
 383         /* set master/slave audio interface */
 384         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 385         case SND_SOC_DAIFMT_CBM_CFM:
 386                 iface |= 0x0040;
 387                 break;
 388         case SND_SOC_DAIFMT_CBS_CFS:
 389                 break;
 390         default:
 391                 return -EINVAL;
 392         }
 393
 394         /* interface format */
 395         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 396         case SND_SOC_DAIFMT_I2S:
 397                 iface |= 0x0002;
 398                 break;
 399         case SND_SOC_DAIFMT_RIGHT_J:
 400                 break;
 401         case SND_SOC_DAIFMT_LEFT_J:
 402                 iface |= 0x0001;
 403                 break;
 404         case SND_SOC_DAIFMT_DSP_A:
 405                 iface |= 0x0003;
 406                 break;
 407         case SND_SOC_DAIFMT_DSP_B:
 408                 iface |= 0x0013;
 409                 break;
 410         default:
 411                 return -EINVAL;
 412         }
 413
 414         /* clock inversion */
 415         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 416         case SND_SOC_DAIFMT_NB_NF:
 417                 break;
 418         case SND_SOC_DAIFMT_IB_IF:
 419                 iface |= 0x0090;
 420                 break;
 421         case SND_SOC_DAIFMT_IB_NF:
 422                 iface |= 0x0080;
 423                 break;
 424         case SND_SOC_DAIFMT_NB_IF:
 425                 iface |= 0x0010;
 426                 break;
 427         default:
 428                 return -EINVAL;
 429         }
 430
 431         /* set iface */
 432         snd_soc_write(codec, WM8960_IFACE1, iface);
 433         return 0;
 434 }
 435
 436 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 437                             struct snd_pcm_hw_params *params,
 438                             struct snd_soc_dai *dai)
 439 {
 440         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 441         struct snd_soc_device *socdev = rtd->socdev;
 442         struct snd_soc_codec *codec = socdev->card->codec;
 443         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 444
 445         /* bit size */
 446         switch (params_format(params)) {
 447         case SNDRV_PCM_FORMAT_S16_LE:
 448                 break;
 449         case SNDRV_PCM_FORMAT_S20_3LE:
 450                 iface |= 0x0004;
 451                 break;
 452         case SNDRV_PCM_FORMAT_S24_LE:
 453                 iface |= 0x0008;
 454                 break;
 455         }
 456
 457         /* set iface */
 458         snd_soc_write(codec, WM8960_IFACE1, iface);
 459         return 0;
 460 }
 461
 462 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 463 {
 464         struct snd_soc_codec *codec = dai->codec;
 465         u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
 466
 467         if (mute)
 468                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
 469         else
 470                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
 471         return 0;
 472 }
 473
 474 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 475                                       enum snd_soc_bias_level level)
 476 {
 477         u16 reg;
 478
 479         switch (level) {
 480         case SND_SOC_BIAS_ON:
 481                 break;
 482
 483         case SND_SOC_BIAS_PREPARE:
 484                 /* Set VMID to 2x50k */
 485                 reg = snd_soc_read(codec, WM8960_POWER1);
 486                 reg &= ~0x180;
 487                 reg |= 0x80;
 488                 snd_soc_write(codec, WM8960_POWER1, reg);
 489                 break;
 490
 491         case SND_SOC_BIAS_STANDBY:
 492                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 493                         /* Enable anti-pop features */
 494                         snd_soc_write(codec, WM8960_APOP1,
 495                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 496                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 497
 498                         /* Enable & ramp VMID at 2x50k */
 499                         reg = snd_soc_read(codec, WM8960_POWER1);
 500                         reg |= 0x80;
 501                         snd_soc_write(codec, WM8960_POWER1, reg);
 502                         msleep(100);
 503
 504                         /* Enable VREF */
 505                         snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
 506
 507                         /* Disable anti-pop features */
 508                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 509                 }
 510
 511                 /* Set VMID to 2x250k */
 512                 reg = snd_soc_read(codec, WM8960_POWER1);
 513                 reg &= ~0x180;
 514                 reg |= 0x100;
 515                 snd_soc_write(codec, WM8960_POWER1, reg);
 516                 break;
 517
 518         case SND_SOC_BIAS_OFF:
 519                 /* Enable anti-pop features */
 520                 snd_soc_write(codec, WM8960_APOP1,
 521                              WM8960_POBCTRL | WM8960_SOFT_ST |
 522                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 523
 524                 /* Disable VMID and VREF, let them discharge */
 525                 snd_soc_write(codec, WM8960_POWER1, 0);
 526                 msleep(600);
 527                 break;
 528         }
 529
 530         codec->bias_level = level;
 531
 532         return 0;
 533 }
 534
 535 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 536                                          enum snd_soc_bias_level level)
 537 {
 538         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 539         int reg;
 540
 541         switch (level) {
 542         case SND_SOC_BIAS_ON:
 543                 break;
 544
 545         case SND_SOC_BIAS_PREPARE:
 546                 switch (codec->bias_level) {
 547                 case SND_SOC_BIAS_STANDBY:
 548                         /* Enable anti pop mode */
 549                         snd_soc_update_bits(codec, WM8960_APOP1,
 550                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 551                                             WM8960_BUFDCOPEN,
 552                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 553                                             WM8960_BUFDCOPEN);
 554
 555                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 556                         reg = 0;
 557                         if (wm8960->lout1 && wm8960->lout1->power)
 558                                 reg |= WM8960_PWR2_LOUT1;
 559                         if (wm8960->rout1 && wm8960->rout1->power)
 560                                 reg |= WM8960_PWR2_ROUT1;
 561                         if (wm8960->out3 && wm8960->out3->power)
 562                                 reg |= WM8960_PWR2_OUT3;
 563                         snd_soc_update_bits(codec, WM8960_POWER2,
 564                                             WM8960_PWR2_LOUT1 |
 565                                             WM8960_PWR2_ROUT1 |
 566                                             WM8960_PWR2_OUT3, reg);
 567
 568                         /* Enable VMID at 2*50k */
 569                         snd_soc_update_bits(codec, WM8960_POWER1,
 570                                             WM8960_VMID_MASK, 0x80);
 571
 572                         /* Ramp */
 573                         msleep(100);
 574
 575                         /* Enable VREF */
 576                         snd_soc_update_bits(codec, WM8960_POWER1,
 577                                             WM8960_VREF, WM8960_VREF);
 578
 579                         msleep(100);
 580                         break;
 581
 582                 case SND_SOC_BIAS_ON:
 583                         /* Enable anti-pop mode */
 584                         snd_soc_update_bits(codec, WM8960_APOP1,
 585                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 586                                             WM8960_BUFDCOPEN,
 587                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 588                                             WM8960_BUFDCOPEN);
 589
 590                         /* Disable VMID and VREF */
 591                         snd_soc_update_bits(codec, WM8960_POWER1,
 592                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 593                         break;
 594
 595                 default:
 596                         break;
 597                 }
 598                 break;
 599
 600         case SND_SOC_BIAS_STANDBY:
 601                 switch (codec->bias_level) {
 602                 case SND_SOC_BIAS_PREPARE:
 603                         /* Disable HP discharge */
 604                         snd_soc_update_bits(codec, WM8960_APOP2,
 605                                             WM8960_DISOP | WM8960_DRES_MASK,
 606                                             0);
 607
 608                         /* Disable anti-pop features */
 609                         snd_soc_update_bits(codec, WM8960_APOP1,
 610                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 611                                             WM8960_BUFDCOPEN,
 612                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 613                                             WM8960_BUFDCOPEN);
 614                         break;
 615
 616                 default:
 617                         break;
 618                 }
 619                 break;
 620
 621         case SND_SOC_BIAS_OFF:
 622                 break;
 623         }
 624
 625         codec->bias_level = level;
 626
 627         return 0;
 628 }
 629
 630 /* PLL divisors */
 631 struct _pll_div {
 632         u32 pre_div:1;
 633         u32 n:4;
 634         u32 k:24;
 635 };
 636
 637 /* The size in bits of the pll divide multiplied by 10
 638  * to allow rounding later */
 639 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 640
 641 static int pll_factors(unsigned int source, unsigned int target,
 642                        struct _pll_div *pll_div)
 643 {
 644         unsigned long long Kpart;
 645         unsigned int K, Ndiv, Nmod;
 646
 647         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 648
 649         /* Scale up target to PLL operating frequency */
 650         target *= 4;
 651
 652         Ndiv = target / source;
 653         if (Ndiv < 6) {
 654                 source >>= 1;
 655                 pll_div->pre_div = 1;
 656                 Ndiv = target / source;
 657         } else
 658                 pll_div->pre_div = 0;
 659
 660         if ((Ndiv < 6) || (Ndiv > 12)) {
 661                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 662                 return -EINVAL;
 663         }
 664
 665         pll_div->n = Ndiv;
 666         Nmod = target % source;
 667         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 668
 669         do_div(Kpart, source);
 670
 671         K = Kpart & 0xFFFFFFFF;
 672
 673         /* Check if we need to round */
 674         if ((K % 10) >= 5)
 675                 K += 5;
 676
 677         /* Move down to proper range now rounding is done */
 678         K /= 10;
 679
 680         pll_div->k = K;
 681
 682         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 683                  pll_div->n, pll_div->k, pll_div->pre_div);
 684
 685         return 0;
 686 }
 687
 688 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 689                 int source, unsigned int freq_in, unsigned int freq_out)
 690 {
 691         struct snd_soc_codec *codec = codec_dai->codec;
 692         u16 reg;
 693         static struct _pll_div pll_div;
 694         int ret;
 695
 696         if (freq_in && freq_out) {
 697                 ret = pll_factors(freq_in, freq_out, &pll_div);
 698                 if (ret != 0)
 699                         return ret;
 700         }
 701
 702         /* Disable the PLL: even if we are changing the frequency the
 703          * PLL needs to be disabled while we do so. */
 704         snd_soc_write(codec, WM8960_CLOCK1,
 705                      snd_soc_read(codec, WM8960_CLOCK1) & ~1);
 706         snd_soc_write(codec, WM8960_POWER2,
 707                      snd_soc_read(codec, WM8960_POWER2) & ~1);
 708
 709         if (!freq_in || !freq_out)
 710                 return 0;
 711
 712         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 713         reg |= pll_div.pre_div << 4;
 714         reg |= pll_div.n;
 715
 716         if (pll_div.k) {
 717                 reg |= 0x20;
 718
 719                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 720                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 721                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 722         }
 723         snd_soc_write(codec, WM8960_PLL1, reg);
 724
 725         /* Turn it on */
 726         snd_soc_write(codec, WM8960_POWER2,
 727                      snd_soc_read(codec, WM8960_POWER2) | 1);
 728         msleep(250);
 729         snd_soc_write(codec, WM8960_CLOCK1,
 730                      snd_soc_read(codec, WM8960_CLOCK1) | 1);
 731
 732         return 0;
 733 }
 734
 735 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 736                 int div_id, int div)
 737 {
 738         struct snd_soc_codec *codec = codec_dai->codec;
 739         u16 reg;
 740
 741         switch (div_id) {
 742         case WM8960_SYSCLKDIV:
 743                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 744                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 745                 break;
 746         case WM8960_DACDIV:
 747                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 748                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 749                 break;
 750         case WM8960_OPCLKDIV:
 751                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 752                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 753                 break;
 754         case WM8960_DCLKDIV:
 755                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 756                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 757                 break;
 758         case WM8960_TOCLKSEL:
 759                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 760                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 761                 break;
 762         default:
 763                 return -EINVAL;
 764         }
 765
 766         return 0;
 767 }
 768
 769 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 770
 771 #define WM8960_FORMATS \
 772         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 773         SNDRV_PCM_FMTBIT_S24_LE)
 774
 775 static struct snd_soc_dai_ops wm8960_dai_ops = {
 776         .hw_params = wm8960_hw_params,
 777         .digital_mute = wm8960_mute,
 778         .set_fmt = wm8960_set_dai_fmt,
 779         .set_clkdiv = wm8960_set_dai_clkdiv,
 780         .set_pll = wm8960_set_dai_pll,
 781 };
 782
 783 struct snd_soc_dai wm8960_dai = {
 784         .name = "WM8960",
 785         .playback = {
 786                 .stream_name = "Playback",
 787                 .channels_min = 1,
 788                 .channels_max = 2,
 789                 .rates = WM8960_RATES,
 790                 .formats = WM8960_FORMATS,},
 791         .capture = {
 792                 .stream_name = "Capture",
 793                 .channels_min = 1,
 794                 .channels_max = 2,
 795                 .rates = WM8960_RATES,
 796                 .formats = WM8960_FORMATS,},
 797         .ops = &wm8960_dai_ops,
 798         .symmetric_rates = 1,
 799 };
 800 EXPORT_SYMBOL_GPL(wm8960_dai);
 801
 802 static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
 803 {
 804         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 805         struct snd_soc_codec *codec = socdev->card->codec;
 806
 807         codec->set_bias_level(codec, SND_SOC_BIAS_OFF);
 808         return 0;
 809 }
 810
 811 static int wm8960_resume(struct platform_device *pdev)
 812 {
 813         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 814         struct snd_soc_codec *codec = socdev->card->codec;
 815         int i;
 816         u8 data[2];
 817         u16 *cache = codec->reg_cache;
 818
 819         /* Sync reg_cache with the hardware */
 820         for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
 821                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 822                 data[1] = cache[i] & 0x00ff;
 823                 codec->hw_write(codec->control_data, data, 2);
 824         }
 825
 826         codec->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 827
 828         return 0;
 829 }
 830
 831 static struct snd_soc_codec *wm8960_codec;
 832
 833 static int wm8960_probe(struct platform_device *pdev)
 834 {
 835         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 836         struct snd_soc_codec *codec;
 837         int ret = 0;
 838
 839         if (wm8960_codec == NULL) {
 840                 dev_err(&pdev->dev, "Codec device not registered\n");
 841                 return -ENODEV;
 842         }
 843
 844         socdev->card->codec = wm8960_codec;
 845         codec = wm8960_codec;
 846
 847         /* register pcms */
 848         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 849         if (ret < 0) {
 850                 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
 851                 goto pcm_err;
 852         }
 853
 854         snd_soc_add_controls(codec, wm8960_snd_controls,
 855                              ARRAY_SIZE(wm8960_snd_controls));
 856         wm8960_add_widgets(codec);
 857
 858         return ret;
 859
 860 pcm_err:
 861         return ret;
 862 }
 863
 864 /* power down chip */
 865 static int wm8960_remove(struct platform_device *pdev)
 866 {
 867         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 868
 869         snd_soc_free_pcms(socdev);
 870         snd_soc_dapm_free(socdev);
 871
 872         return 0;
 873 }
 874
 875 struct snd_soc_codec_device soc_codec_dev_wm8960 = {
 876         .probe =        wm8960_probe,
 877         .remove =       wm8960_remove,
 878         .suspend =      wm8960_suspend,
 879         .resume =       wm8960_resume,
 880 };
 881 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
 882
 883 static int wm8960_register(struct wm8960_priv *wm8960,
 884                            enum snd_soc_control_type control)
 885 {
 886         struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
 887         struct snd_soc_codec *codec = &wm8960->codec;
 888         int ret;
 889         u16 reg;
 890
 891         if (wm8960_codec) {
 892                 dev_err(codec->dev, "Another WM8960 is registered\n");
 893                 ret = -EINVAL;
 894                 goto err;
 895         }
 896
 897         codec->set_bias_level = wm8960_set_bias_level_out3;
 898
 899         if (!pdata) {
 900                 dev_warn(codec->dev, "No platform data supplied\n");
 901         } else {
 902                 if (pdata->dres > WM8960_DRES_MAX) {
 903                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 904                         pdata->dres = 0;
 905                 }
 906
 907                 if (pdata->capless)
 908                         codec->set_bias_level = wm8960_set_bias_level_capless;
 909         }
 910
 911         mutex_init(&codec->mutex);
 912         INIT_LIST_HEAD(&codec->dapm_widgets);
 913         INIT_LIST_HEAD(&codec->dapm_paths);
 914
 915         snd_soc_codec_set_drvdata(codec, wm8960);
 916         codec->name = "WM8960";
 917         codec->owner = THIS_MODULE;
 918         codec->bias_level = SND_SOC_BIAS_OFF;
 919         codec->dai = &wm8960_dai;
 920         codec->num_dai = 1;
 921         codec->reg_cache_size = WM8960_CACHEREGNUM;
 922         codec->reg_cache = &wm8960->reg_cache;
 923
 924         memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
 925
 926         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 927         if (ret < 0) {
 928                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 929                 goto err;
 930         }
 931
 932         ret = wm8960_reset(codec);
 933         if (ret < 0) {
 934                 dev_err(codec->dev, "Failed to issue reset\n");
 935                 goto err;
 936         }
 937
 938         wm8960_dai.dev = codec->dev;
 939
 940         codec->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 941
 942         /* Latch the update bits */
 943         reg = snd_soc_read(codec, WM8960_LINVOL);
 944         snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
 945         reg = snd_soc_read(codec, WM8960_RINVOL);
 946         snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
 947         reg = snd_soc_read(codec, WM8960_LADC);
 948         snd_soc_write(codec, WM8960_LADC, reg | 0x100);
 949         reg = snd_soc_read(codec, WM8960_RADC);
 950         snd_soc_write(codec, WM8960_RADC, reg | 0x100);
 951         reg = snd_soc_read(codec, WM8960_LDAC);
 952         snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
 953         reg = snd_soc_read(codec, WM8960_RDAC);
 954         snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
 955         reg = snd_soc_read(codec, WM8960_LOUT1);
 956         snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
 957         reg = snd_soc_read(codec, WM8960_ROUT1);
 958         snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
 959         reg = snd_soc_read(codec, WM8960_LOUT2);
 960         snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
 961         reg = snd_soc_read(codec, WM8960_ROUT2);
 962         snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
 963
 964         wm8960_codec = codec;
 965
 966         ret = snd_soc_register_codec(codec);
 967         if (ret != 0) {
 968                 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
 969                 goto err;
 970         }
 971
 972         ret = snd_soc_register_dai(&wm8960_dai);
 973         if (ret != 0) {
 974                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 975                 goto err_codec;
 976         }
 977
 978         return 0;
 979
 980 err_codec:
 981         snd_soc_unregister_codec(codec);
 982 err:
 983         kfree(wm8960);
 984         return ret;
 985 }
 986
 987 static void wm8960_unregister(struct wm8960_priv *wm8960)
 988 {
 989         wm8960->codec.set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
 990         snd_soc_unregister_dai(&wm8960_dai);
 991         snd_soc_unregister_codec(&wm8960->codec);
 992         kfree(wm8960);
 993         wm8960_codec = NULL;
 994 }
 995
 996 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
 997                                       const struct i2c_device_id *id)
 998 {
 999         struct wm8960_priv *wm8960;
1000         struct snd_soc_codec *codec;
1001
1002         wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
1003         if (wm8960 == NULL)
1004                 return -ENOMEM;
1005
1006         codec = &wm8960->codec;
1007
1008         i2c_set_clientdata(i2c, wm8960);
1009         codec->control_data = i2c;
1010
1011         codec->dev = &i2c->dev;
1012
1013         return wm8960_register(wm8960, SND_SOC_I2C);
1014 }
1015
1016 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
1017 {
1018         struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
1019         wm8960_unregister(wm8960);
1020         return 0;
1021 }
1022
1023 static const struct i2c_device_id wm8960_i2c_id[] = {
1024         { "wm8960", 0 },
1025         { }
1026 };
1027 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1028
1029 static struct i2c_driver wm8960_i2c_driver = {
1030         .driver = {
1031                 .name = "wm8960",
1032                 .owner = THIS_MODULE,
1033         },
1034         .probe =    wm8960_i2c_probe,
1035         .remove =   __devexit_p(wm8960_i2c_remove),
1036         .id_table = wm8960_i2c_id,
1037 };
1038
1039 static int __init wm8960_modinit(void)
1040 {
1041         int ret;
1042
1043         ret = i2c_add_driver(&wm8960_i2c_driver);
1044         if (ret != 0) {
1045                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1046                        ret);
1047         }
1048
1049         return ret;
1050 }
1051 module_init(wm8960_modinit);
1052
1053 static void __exit wm8960_exit(void)
1054 {
1055         i2c_del_driver(&wm8960_i2c_driver);
1056 }
1057 module_exit(wm8960_exit);
1058
1059
1060 MODULE_DESCRIPTION("ASoC WM8960 driver");
1061 MODULE_AUTHOR("Liam Girdwood");
1062 MODULE_LICENSE("GPL");