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         snd_soc_dapm_new_widgets(codec);
 311         return 0;
 312 }
 313
 314 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 315                 unsigned int fmt)
 316 {
 317         struct snd_soc_codec *codec = codec_dai->codec;
 318         u16 iface = 0;
 319
 320         /* set master/slave audio interface */
 321         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 322         case SND_SOC_DAIFMT_CBM_CFM:
 323                 iface |= 0x0040;
 324                 break;
 325         case SND_SOC_DAIFMT_CBS_CFS:
 326                 break;
 327         default:
 328                 return -EINVAL;
 329         }
 330
 331         /* interface format */
 332         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 333         case SND_SOC_DAIFMT_I2S:
 334                 iface |= 0x0002;
 335                 break;
 336         case SND_SOC_DAIFMT_RIGHT_J:
 337                 break;
 338         case SND_SOC_DAIFMT_LEFT_J:
 339                 iface |= 0x0001;
 340                 break;
 341         case SND_SOC_DAIFMT_DSP_A:
 342                 iface |= 0x0003;
 343                 break;
 344         case SND_SOC_DAIFMT_DSP_B:
 345                 iface |= 0x0013;
 346                 break;
 347         default:
 348                 return -EINVAL;
 349         }
 350
 351         /* clock inversion */
 352         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 353         case SND_SOC_DAIFMT_NB_NF:
 354                 break;
 355         case SND_SOC_DAIFMT_IB_IF:
 356                 iface |= 0x0090;
 357                 break;
 358         case SND_SOC_DAIFMT_IB_NF:
 359                 iface |= 0x0080;
 360                 break;
 361         case SND_SOC_DAIFMT_NB_IF:
 362                 iface |= 0x0010;
 363                 break;
 364         default:
 365                 return -EINVAL;
 366         }
 367
 368         /* set iface */
 369         snd_soc_write(codec, WM8960_IFACE1, iface);
 370         return 0;
 371 }
 372
 373 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 374                             struct snd_pcm_hw_params *params,
 375                             struct snd_soc_dai *dai)
 376 {
 377         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 378         struct snd_soc_device *socdev = rtd->socdev;
 379         struct snd_soc_codec *codec = socdev->card->codec;
 380         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 381
 382         /* bit size */
 383         switch (params_format(params)) {
 384         case SNDRV_PCM_FORMAT_S16_LE:
 385                 break;
 386         case SNDRV_PCM_FORMAT_S20_3LE:
 387                 iface |= 0x0004;
 388                 break;
 389         case SNDRV_PCM_FORMAT_S24_LE:
 390                 iface |= 0x0008;
 391                 break;
 392         }
 393
 394         /* set iface */
 395         snd_soc_write(codec, WM8960_IFACE1, iface);
 396         return 0;
 397 }
 398
 399 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 400 {
 401         struct snd_soc_codec *codec = dai->codec;
 402         u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
 403
 404         if (mute)
 405                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
 406         else
 407                 snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
 408         return 0;
 409 }
 410
 411 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 412                                  enum snd_soc_bias_level level)
 413 {
 414         struct wm8960_data *pdata = codec->dev->platform_data;
 415         u16 reg;
 416
 417         switch (level) {
 418         case SND_SOC_BIAS_ON:
 419                 break;
 420
 421         case SND_SOC_BIAS_PREPARE:
 422                 /* Set VMID to 2x50k */
 423                 reg = snd_soc_read(codec, WM8960_POWER1);
 424                 reg &= ~0x180;
 425                 reg |= 0x80;
 426                 snd_soc_write(codec, WM8960_POWER1, reg);
 427                 break;
 428
 429         case SND_SOC_BIAS_STANDBY:
 430                 if (codec->bias_level == SND_SOC_BIAS_OFF) {
 431                         /* Enable anti-pop features */
 432                         snd_soc_write(codec, WM8960_APOP1,
 433                                      WM8960_POBCTRL | WM8960_SOFT_ST |
 434                                      WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 435
 436                         /* Discharge HP output */
 437                         reg = WM8960_DISOP;
 438                         if (pdata)
 439                                 reg |= pdata->dres << 4;
 440                         snd_soc_write(codec, WM8960_APOP2, reg);
 441
 442                         msleep(400);
 443
 444                         snd_soc_write(codec, WM8960_APOP2, 0);
 445
 446                         /* Enable & ramp VMID at 2x50k */
 447                         reg = snd_soc_read(codec, WM8960_POWER1);
 448                         reg |= 0x80;
 449                         snd_soc_write(codec, WM8960_POWER1, reg);
 450                         msleep(100);
 451
 452                         /* Enable VREF */
 453                         snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
 454
 455                         /* Disable anti-pop features */
 456                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 457                 }
 458
 459                 /* Set VMID to 2x250k */
 460                 reg = snd_soc_read(codec, WM8960_POWER1);
 461                 reg &= ~0x180;
 462                 reg |= 0x100;
 463                 snd_soc_write(codec, WM8960_POWER1, reg);
 464                 break;
 465
 466         case SND_SOC_BIAS_OFF:
 467                 /* Enable anti-pop features */
 468                 snd_soc_write(codec, WM8960_APOP1,
 469                              WM8960_POBCTRL | WM8960_SOFT_ST |
 470                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 471
 472                 /* Disable VMID and VREF, let them discharge */
 473                 snd_soc_write(codec, WM8960_POWER1, 0);
 474                 msleep(600);
 475
 476                 snd_soc_write(codec, WM8960_APOP1, 0);
 477                 break;
 478         }
 479
 480         codec->bias_level = level;
 481
 482         return 0;
 483 }
 484
 485 /* PLL divisors */
 486 struct _pll_div {
 487         u32 pre_div:1;
 488         u32 n:4;
 489         u32 k:24;
 490 };
 491
 492 /* The size in bits of the pll divide multiplied by 10
 493  * to allow rounding later */
 494 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 495
 496 static int pll_factors(unsigned int source, unsigned int target,
 497                        struct _pll_div *pll_div)
 498 {
 499         unsigned long long Kpart;
 500         unsigned int K, Ndiv, Nmod;
 501
 502         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 503
 504         /* Scale up target to PLL operating frequency */
 505         target *= 4;
 506
 507         Ndiv = target / source;
 508         if (Ndiv < 6) {
 509                 source >>= 1;
 510                 pll_div->pre_div = 1;
 511                 Ndiv = target / source;
 512         } else
 513                 pll_div->pre_div = 0;
 514
 515         if ((Ndiv < 6) || (Ndiv > 12)) {
 516                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 517                 return -EINVAL;
 518         }
 519
 520         pll_div->n = Ndiv;
 521         Nmod = target % source;
 522         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 523
 524         do_div(Kpart, source);
 525
 526         K = Kpart & 0xFFFFFFFF;
 527
 528         /* Check if we need to round */
 529         if ((K % 10) >= 5)
 530                 K += 5;
 531
 532         /* Move down to proper range now rounding is done */
 533         K /= 10;
 534
 535         pll_div->k = K;
 536
 537         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 538                  pll_div->n, pll_div->k, pll_div->pre_div);
 539
 540         return 0;
 541 }
 542
 543 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai,
 544                 int pll_id, unsigned int freq_in, unsigned int freq_out)
 545 {
 546         struct snd_soc_codec *codec = codec_dai->codec;
 547         u16 reg;
 548         static struct _pll_div pll_div;
 549         int ret;
 550
 551         if (freq_in && freq_out) {
 552                 ret = pll_factors(freq_in, freq_out, &pll_div);
 553                 if (ret != 0)
 554                         return ret;
 555         }
 556
 557         /* Disable the PLL: even if we are changing the frequency the
 558          * PLL needs to be disabled while we do so. */
 559         snd_soc_write(codec, WM8960_CLOCK1,
 560                      snd_soc_read(codec, WM8960_CLOCK1) & ~1);
 561         snd_soc_write(codec, WM8960_POWER2,
 562                      snd_soc_read(codec, WM8960_POWER2) & ~1);
 563
 564         if (!freq_in || !freq_out)
 565                 return 0;
 566
 567         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 568         reg |= pll_div.pre_div << 4;
 569         reg |= pll_div.n;
 570
 571         if (pll_div.k) {
 572                 reg |= 0x20;
 573
 574                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 575                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 576                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 577         }
 578         snd_soc_write(codec, WM8960_PLL1, reg);
 579
 580         /* Turn it on */
 581         snd_soc_write(codec, WM8960_POWER2,
 582                      snd_soc_read(codec, WM8960_POWER2) | 1);
 583         msleep(250);
 584         snd_soc_write(codec, WM8960_CLOCK1,
 585                      snd_soc_read(codec, WM8960_CLOCK1) | 1);
 586
 587         return 0;
 588 }
 589
 590 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 591                 int div_id, int div)
 592 {
 593         struct snd_soc_codec *codec = codec_dai->codec;
 594         u16 reg;
 595
 596         switch (div_id) {
 597         case WM8960_SYSCLKSEL:
 598                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe;
 599                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 600                 break;
 601         case WM8960_SYSCLKDIV:
 602                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 603                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 604                 break;
 605         case WM8960_DACDIV:
 606                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 607                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 608                 break;
 609         case WM8960_OPCLKDIV:
 610                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 611                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 612                 break;
 613         case WM8960_DCLKDIV:
 614                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 615                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 616                 break;
 617         case WM8960_TOCLKSEL:
 618                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 619                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 620                 break;
 621         default:
 622                 return -EINVAL;
 623         }
 624
 625         return 0;
 626 }
 627
 628 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 629
 630 #define WM8960_FORMATS \
 631         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 632         SNDRV_PCM_FMTBIT_S24_LE)
 633
 634 static struct snd_soc_dai_ops wm8960_dai_ops = {
 635         .hw_params = wm8960_hw_params,
 636         .digital_mute = wm8960_mute,
 637         .set_fmt = wm8960_set_dai_fmt,
 638         .set_clkdiv = wm8960_set_dai_clkdiv,
 639         .set_pll = wm8960_set_dai_pll,
 640 };
 641
 642 struct snd_soc_dai wm8960_dai = {
 643         .name = "WM8960",
 644         .playback = {
 645                 .stream_name = "Playback",
 646                 .channels_min = 1,
 647                 .channels_max = 2,
 648                 .rates = WM8960_RATES,
 649                 .formats = WM8960_FORMATS,},
 650         .capture = {
 651                 .stream_name = "Capture",
 652                 .channels_min = 1,
 653                 .channels_max = 2,
 654                 .rates = WM8960_RATES,
 655                 .formats = WM8960_FORMATS,},
 656         .ops = &wm8960_dai_ops,
 657         .symmetric_rates = 1,
 658 };
 659 EXPORT_SYMBOL_GPL(wm8960_dai);
 660
 661 static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
 662 {
 663         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 664         struct snd_soc_codec *codec = socdev->card->codec;
 665
 666         wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF);
 667         return 0;
 668 }
 669
 670 static int wm8960_resume(struct platform_device *pdev)
 671 {
 672         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 673         struct snd_soc_codec *codec = socdev->card->codec;
 674         int i;
 675         u8 data[2];
 676         u16 *cache = codec->reg_cache;
 677
 678         /* Sync reg_cache with the hardware */
 679         for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
 680                 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
 681                 data[1] = cache[i] & 0x00ff;
 682                 codec->hw_write(codec->control_data, data, 2);
 683         }
 684
 685         wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 686         wm8960_set_bias_level(codec, codec->suspend_bias_level);
 687         return 0;
 688 }
 689
 690 static struct snd_soc_codec *wm8960_codec;
 691
 692 static int wm8960_probe(struct platform_device *pdev)
 693 {
 694         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 695         struct snd_soc_codec *codec;
 696         int ret = 0;
 697
 698         if (wm8960_codec == NULL) {
 699                 dev_err(&pdev->dev, "Codec device not registered\n");
 700                 return -ENODEV;
 701         }
 702
 703         socdev->card->codec = wm8960_codec;
 704         codec = wm8960_codec;
 705
 706         /* register pcms */
 707         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 708         if (ret < 0) {
 709                 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
 710                 goto pcm_err;
 711         }
 712
 713         snd_soc_add_controls(codec, wm8960_snd_controls,
 714                              ARRAY_SIZE(wm8960_snd_controls));
 715         wm8960_add_widgets(codec);
 716         ret = snd_soc_init_card(socdev);
 717         if (ret < 0) {
 718                 dev_err(codec->dev, "failed to register card: %d\n", ret);
 719                 goto card_err;
 720         }
 721
 722         return ret;
 723
 724 card_err:
 725         snd_soc_free_pcms(socdev);
 726         snd_soc_dapm_free(socdev);
 727 pcm_err:
 728         return ret;
 729 }
 730
 731 /* power down chip */
 732 static int wm8960_remove(struct platform_device *pdev)
 733 {
 734         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 735
 736         snd_soc_free_pcms(socdev);
 737         snd_soc_dapm_free(socdev);
 738
 739         return 0;
 740 }
 741
 742 struct snd_soc_codec_device soc_codec_dev_wm8960 = {
 743         .probe =        wm8960_probe,
 744         .remove =       wm8960_remove,
 745         .suspend =      wm8960_suspend,
 746         .resume =       wm8960_resume,
 747 };
 748 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
 749
 750 static int wm8960_register(struct wm8960_priv *wm8960,
 751                            enum snd_soc_control_type control)
 752 {
 753         struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
 754         struct snd_soc_codec *codec = &wm8960->codec;
 755         int ret;
 756         u16 reg;
 757
 758         if (wm8960_codec) {
 759                 dev_err(codec->dev, "Another WM8960 is registered\n");
 760                 ret = -EINVAL;
 761                 goto err;
 762         }
 763
 764         if (!pdata) {
 765                 dev_warn(codec->dev, "No platform data supplied\n");
 766         } else {
 767                 if (pdata->dres > WM8960_DRES_MAX) {
 768                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 769                         pdata->dres = 0;
 770                 }
 771         }
 772
 773         mutex_init(&codec->mutex);
 774         INIT_LIST_HEAD(&codec->dapm_widgets);
 775         INIT_LIST_HEAD(&codec->dapm_paths);
 776
 777         codec->private_data = wm8960;
 778         codec->name = "WM8960";
 779         codec->owner = THIS_MODULE;
 780         codec->bias_level = SND_SOC_BIAS_OFF;
 781         codec->set_bias_level = wm8960_set_bias_level;
 782         codec->dai = &wm8960_dai;
 783         codec->num_dai = 1;
 784         codec->reg_cache_size = WM8960_CACHEREGNUM;
 785         codec->reg_cache = &wm8960->reg_cache;
 786
 787         memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
 788
 789         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
 790         if (ret < 0) {
 791                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 792                 goto err;
 793         }
 794
 795         ret = wm8960_reset(codec);
 796         if (ret < 0) {
 797                 dev_err(codec->dev, "Failed to issue reset\n");
 798                 goto err;
 799         }
 800
 801         wm8960_dai.dev = codec->dev;
 802
 803         wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 804
 805         /* Latch the update bits */
 806         reg = snd_soc_read(codec, WM8960_LINVOL);
 807         snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
 808         reg = snd_soc_read(codec, WM8960_RINVOL);
 809         snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
 810         reg = snd_soc_read(codec, WM8960_LADC);
 811         snd_soc_write(codec, WM8960_LADC, reg | 0x100);
 812         reg = snd_soc_read(codec, WM8960_RADC);
 813         snd_soc_write(codec, WM8960_RADC, reg | 0x100);
 814         reg = snd_soc_read(codec, WM8960_LDAC);
 815         snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
 816         reg = snd_soc_read(codec, WM8960_RDAC);
 817         snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
 818         reg = snd_soc_read(codec, WM8960_LOUT1);
 819         snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
 820         reg = snd_soc_read(codec, WM8960_ROUT1);
 821         snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
 822         reg = snd_soc_read(codec, WM8960_LOUT2);
 823         snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
 824         reg = snd_soc_read(codec, WM8960_ROUT2);
 825         snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
 826
 827         wm8960_codec = codec;
 828
 829         ret = snd_soc_register_codec(codec);
 830         if (ret != 0) {
 831                 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
 832                 goto err;
 833         }
 834
 835         ret = snd_soc_register_dai(&wm8960_dai);
 836         if (ret != 0) {
 837                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 838                 goto err_codec;
 839         }
 840
 841         return 0;
 842
 843 err_codec:
 844         snd_soc_unregister_codec(codec);
 845 err:
 846         kfree(wm8960);
 847         return ret;
 848 }
 849
 850 static void wm8960_unregister(struct wm8960_priv *wm8960)
 851 {
 852         wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
 853         snd_soc_unregister_dai(&wm8960_dai);
 854         snd_soc_unregister_codec(&wm8960->codec);
 855         kfree(wm8960);
 856         wm8960_codec = NULL;
 857 }
 858
 859 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
 860                                       const struct i2c_device_id *id)
 861 {
 862         struct wm8960_priv *wm8960;
 863         struct snd_soc_codec *codec;
 864
 865         wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
 866         if (wm8960 == NULL)
 867                 return -ENOMEM;
 868
 869         codec = &wm8960->codec;
 870
 871         i2c_set_clientdata(i2c, wm8960);
 872         codec->control_data = i2c;
 873
 874         codec->dev = &i2c->dev;
 875
 876         return wm8960_register(wm8960, SND_SOC_I2C);
 877 }
 878
 879 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
 880 {
 881         struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
 882         wm8960_unregister(wm8960);
 883         return 0;
 884 }
 885
 886 #ifdef CONFIG_PM
 887 static int wm8960_i2c_suspend(struct i2c_client *client, pm_message_t msg)
 888 {
 889         return snd_soc_suspend_device(&client->dev);
 890 }
 891
 892 static int wm8960_i2c_resume(struct i2c_client *client)
 893 {
 894         return snd_soc_resume_device(&client->dev);
 895 }
 896 #else
 897 #define wm8960_i2c_suspend NULL
 898 #define wm8960_i2c_resume NULL
 899 #endif
 900
 901 static const struct i2c_device_id wm8960_i2c_id[] = {
 902         { "wm8960", 0 },
 903         { }
 904 };
 905 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
 906
 907 static struct i2c_driver wm8960_i2c_driver = {
 908         .driver = {
 909                 .name = "WM8960 I2C Codec",
 910                 .owner = THIS_MODULE,
 911         },
 912         .probe =    wm8960_i2c_probe,
 913         .remove =   __devexit_p(wm8960_i2c_remove),
 914         .suspend =  wm8960_i2c_suspend,
 915         .resume =   wm8960_i2c_resume,
 916         .id_table = wm8960_i2c_id,
 917 };
 918
 919 static int __init wm8960_modinit(void)
 920 {
 921         int ret;
 922
 923         ret = i2c_add_driver(&wm8960_i2c_driver);
 924         if (ret != 0) {
 925                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
 926                        ret);
 927         }
 928
 929         return ret;
 930 }
 931 module_init(wm8960_modinit);
 932
 933 static void __exit wm8960_exit(void)
 934 {
 935         i2c_del_driver(&wm8960_i2c_driver);
 936 }
 937 module_exit(wm8960_exit);
 938
 939
 940 MODULE_DESCRIPTION("ASoC WM8960 driver");
 941 MODULE_AUTHOR("Liam Girdwood");
 942 MODULE_LICENSE("GPL");