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/i2c.h>
  19 #include <linux/slab.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/soc.h>
  24 #include <sound/initval.h>
  25 #include <sound/tlv.h>
  26 #include <sound/wm8960.h>
  27
  28 #include "wm8960.h"
  29
  30 /* R25 - Power 1 */
  31 #define WM8960_VMID_MASK 0x180
  32 #define WM8960_VREF      0x40
  33
  34 /* R26 - Power 2 */
  35 #define WM8960_PWR2_LOUT1       0x40
  36 #define WM8960_PWR2_ROUT1       0x20
  37 #define WM8960_PWR2_OUT3        0x02
  38
  39 /* R28 - Anti-pop 1 */
  40 #define WM8960_POBCTRL   0x80
  41 #define WM8960_BUFDCOPEN 0x10
  42 #define WM8960_BUFIOEN   0x08
  43 #define WM8960_SOFT_ST   0x04
  44 #define WM8960_HPSTBY    0x01
  45
  46 /* R29 - Anti-pop 2 */
  47 #define WM8960_DISOP     0x40
  48 #define WM8960_DRES_MASK 0x30
  49
  50 /*
  51  * wm8960 register cache
  52  * We can't read the WM8960 register space when we are
  53  * using 2 wire for device control, so we cache them instead.
  54  */
  55 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  56         0x0097, 0x0097, 0x0000, 0x0000,
  57         0x0000, 0x0008, 0x0000, 0x000a,
  58         0x01c0, 0x0000, 0x00ff, 0x00ff,
  59         0x0000, 0x0000, 0x0000, 0x0000,
  60         0x0000, 0x007b, 0x0100, 0x0032,
  61         0x0000, 0x00c3, 0x00c3, 0x01c0,
  62         0x0000, 0x0000, 0x0000, 0x0000,
  63         0x0000, 0x0000, 0x0000, 0x0000,
  64         0x0100, 0x0100, 0x0050, 0x0050,
  65         0x0050, 0x0050, 0x0000, 0x0000,
  66         0x0000, 0x0000, 0x0040, 0x0000,
  67         0x0000, 0x0050, 0x0050, 0x0000,
  68         0x0002, 0x0037, 0x004d, 0x0080,
  69         0x0008, 0x0031, 0x0026, 0x00e9,
  70 };
  71
  72 struct wm8960_priv {
  73         enum snd_soc_control_type control_type;
  74         int (*set_bias_level)(struct snd_soc_codec *,
  75                               enum snd_soc_bias_level level);
  76         struct snd_soc_dapm_widget *lout1;
  77         struct snd_soc_dapm_widget *rout1;
  78         struct snd_soc_dapm_widget *out3;
  79         bool deemph;
  80         int playback_fs;
  81 };
  82
  83 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  84
  85 /* enumerated controls */
  86 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  87         "Right Inverted", "Stereo Inversion"};
  88 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  89 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  90 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  91 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  92
  93 static const struct soc_enum wm8960_enum[] = {
  94         SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  95         SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
  96         SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
  97         SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
  98         SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
  99         SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 100 };
 101
 102 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 103
 104 static int wm8960_set_deemph(struct snd_soc_codec *codec)
 105 {
 106         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 107         int val, i, best;
 108
 109         /* If we're using deemphasis select the nearest available sample
 110          * rate.
 111          */
 112         if (wm8960->deemph) {
 113                 best = 1;
 114                 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 115                         if (abs(deemph_settings[i] - wm8960->playback_fs) <
 116                             abs(deemph_settings[best] - wm8960->playback_fs))
 117                                 best = i;
 118                 }
 119
 120                 val = best << 1;
 121         } else {
 122                 val = 0;
 123         }
 124
 125         dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 126
 127         return snd_soc_update_bits(codec, WM8960_DACCTL1,
 128                                    0x6, val);
 129 }
 130
 131 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 132                              struct snd_ctl_elem_value *ucontrol)
 133 {
 134         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 135         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 136
 137         ucontrol->value.enumerated.item[0] = wm8960->deemph;
 138         return 0;
 139 }
 140
 141 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 142                              struct snd_ctl_elem_value *ucontrol)
 143 {
 144         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 145         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 146         int deemph = ucontrol->value.enumerated.item[0];
 147
 148         if (deemph > 1)
 149                 return -EINVAL;
 150
 151         wm8960->deemph = deemph;
 152
 153         return wm8960_set_deemph(codec);
 154 }
 155
 156 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 157 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 158 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 159 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 160
 161 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 162 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 163                  0, 63, 0, adc_tlv),
 164 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 165         6, 1, 0),
 166 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 167         7, 1, 0),
 168
 169 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 170                  0, 255, 0, dac_tlv),
 171
 172 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 173                  0, 127, 0, out_tlv),
 174 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 175         7, 1, 0),
 176
 177 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 178                  0, 127, 0, out_tlv),
 179 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 180         7, 1, 0),
 181 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 182 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 183
 184 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 185 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 186 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 187
 188 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 189 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 190                     wm8960_get_deemph, wm8960_put_deemph),
 191
 192 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 193 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 194 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 195 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 196
 197 SOC_ENUM("ALC Function", wm8960_enum[4]),
 198 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 199 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 200 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 201 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 202 SOC_ENUM("ALC Mode", wm8960_enum[5]),
 203 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 204 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 205
 206 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 207 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 208
 209 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 210         0, 127, 0),
 211
 212 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 213                WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 214 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 215                WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 216 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 217                WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 218 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 219                WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 220 };
 221
 222 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 223 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 224 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 225 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 226 };
 227
 228 static const struct snd_kcontrol_new wm8960_lin[] = {
 229 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 230 };
 231
 232 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 233 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 234 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 235 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 236 };
 237
 238 static const struct snd_kcontrol_new wm8960_rin[] = {
 239 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 240 };
 241
 242 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 243 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 244 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 245 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 246 };
 247
 248 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 249 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 250 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 251 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 252 };
 253
 254 static const struct snd_kcontrol_new wm8960_mono_out[] = {
 255 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 256 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 257 };
 258
 259 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 260 SND_SOC_DAPM_INPUT("LINPUT1"),
 261 SND_SOC_DAPM_INPUT("RINPUT1"),
 262 SND_SOC_DAPM_INPUT("LINPUT2"),
 263 SND_SOC_DAPM_INPUT("RINPUT2"),
 264 SND_SOC_DAPM_INPUT("LINPUT3"),
 265 SND_SOC_DAPM_INPUT("RINPUT3"),
 266
 267 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
 268
 269 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 270                    wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 271 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 272                    wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 273
 274 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 275                    wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 276 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 277                    wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 278
 279 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 280 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 281
 282 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 283 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 284
 285 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 286         &wm8960_loutput_mixer[0],
 287         ARRAY_SIZE(wm8960_loutput_mixer)),
 288 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 289         &wm8960_routput_mixer[0],
 290         ARRAY_SIZE(wm8960_routput_mixer)),
 291
 292 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 293 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 294
 295 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 296 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 297
 298 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 299 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 300
 301 SND_SOC_DAPM_OUTPUT("SPK_LP"),
 302 SND_SOC_DAPM_OUTPUT("SPK_LN"),
 303 SND_SOC_DAPM_OUTPUT("HP_L"),
 304 SND_SOC_DAPM_OUTPUT("HP_R"),
 305 SND_SOC_DAPM_OUTPUT("SPK_RP"),
 306 SND_SOC_DAPM_OUTPUT("SPK_RN"),
 307 SND_SOC_DAPM_OUTPUT("OUT3"),
 308 };
 309
 310 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 311 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 312         &wm8960_mono_out[0],
 313         ARRAY_SIZE(wm8960_mono_out)),
 314 };
 315
 316 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 317 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 318 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 319 };
 320
 321 static const struct snd_soc_dapm_route audio_paths[] = {
 322         { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 323         { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 324         { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 325
 326         { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 327         { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 328         { "Left Input Mixer", NULL, "LINPUT2" },
 329         { "Left Input Mixer", NULL, "LINPUT3" },
 330
 331         { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 332         { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 333         { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 334
 335         { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 336         { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 337         { "Right Input Mixer", NULL, "RINPUT2" },
 338         { "Right Input Mixer", NULL, "LINPUT3" },
 339
 340         { "Left ADC", NULL, "Left Input Mixer" },
 341         { "Right ADC", NULL, "Right Input Mixer" },
 342
 343         { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 344         { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 345         { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 346
 347         { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 348         { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 349         { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 350
 351         { "LOUT1 PGA", NULL, "Left Output Mixer" },
 352         { "ROUT1 PGA", NULL, "Right Output Mixer" },
 353
 354         { "HP_L", NULL, "LOUT1 PGA" },
 355         { "HP_R", NULL, "ROUT1 PGA" },
 356
 357         { "Left Speaker PGA", NULL, "Left Output Mixer" },
 358         { "Right Speaker PGA", NULL, "Right Output Mixer" },
 359
 360         { "Left Speaker Output", NULL, "Left Speaker PGA" },
 361         { "Right Speaker Output", NULL, "Right Speaker PGA" },
 362
 363         { "SPK_LN", NULL, "Left Speaker Output" },
 364         { "SPK_LP", NULL, "Left Speaker Output" },
 365         { "SPK_RN", NULL, "Right Speaker Output" },
 366         { "SPK_RP", NULL, "Right Speaker Output" },
 367 };
 368
 369 static const struct snd_soc_dapm_route audio_paths_out3[] = {
 370         { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 371         { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 372
 373         { "OUT3", NULL, "Mono Output Mixer", }
 374 };
 375
 376 static const struct snd_soc_dapm_route audio_paths_capless[] = {
 377         { "HP_L", NULL, "OUT3 VMID" },
 378         { "HP_R", NULL, "OUT3 VMID" },
 379
 380         { "OUT3 VMID", NULL, "Left Output Mixer" },
 381         { "OUT3 VMID", NULL, "Right Output Mixer" },
 382 };
 383
 384 static int wm8960_add_widgets(struct snd_soc_codec *codec)
 385 {
 386         struct wm8960_data *pdata = codec->dev->platform_data;
 387         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 388         struct snd_soc_dapm_context *dapm = &codec->dapm;
 389         struct snd_soc_dapm_widget *w;
 390
 391         snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
 392                                   ARRAY_SIZE(wm8960_dapm_widgets));
 393
 394         snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
 395
 396         /* In capless mode OUT3 is used to provide VMID for the
 397          * headphone outputs, otherwise it is used as a mono mixer.
 398          */
 399         if (pdata && pdata->capless) {
 400                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
 401                                           ARRAY_SIZE(wm8960_dapm_widgets_capless));
 402
 403                 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
 404                                         ARRAY_SIZE(audio_paths_capless));
 405         } else {
 406                 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
 407                                           ARRAY_SIZE(wm8960_dapm_widgets_out3));
 408
 409                 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
 410                                         ARRAY_SIZE(audio_paths_out3));
 411         }
 412
 413         /* We need to power up the headphone output stage out of
 414          * sequence for capless mode.  To save scanning the widget
 415          * list each time to find the desired power state do so now
 416          * and save the result.
 417          */
 418         list_for_each_entry(w, &codec->card->widgets, list) {
 419                 if (w->dapm != &codec->dapm)
 420                         continue;
 421                 if (strcmp(w->name, "LOUT1 PGA") == 0)
 422                         wm8960->lout1 = w;
 423                 if (strcmp(w->name, "ROUT1 PGA") == 0)
 424                         wm8960->rout1 = w;
 425                 if (strcmp(w->name, "OUT3 VMID") == 0)
 426                         wm8960->out3 = w;
 427         }
 428
 429         return 0;
 430 }
 431
 432 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 433                 unsigned int fmt)
 434 {
 435         struct snd_soc_codec *codec = codec_dai->codec;
 436         u16 iface = 0;
 437
 438         /* set master/slave audio interface */
 439         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 440         case SND_SOC_DAIFMT_CBM_CFM:
 441                 iface |= 0x0040;
 442                 break;
 443         case SND_SOC_DAIFMT_CBS_CFS:
 444                 break;
 445         default:
 446                 return -EINVAL;
 447         }
 448
 449         /* interface format */
 450         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 451         case SND_SOC_DAIFMT_I2S:
 452                 iface |= 0x0002;
 453                 break;
 454         case SND_SOC_DAIFMT_RIGHT_J:
 455                 break;
 456         case SND_SOC_DAIFMT_LEFT_J:
 457                 iface |= 0x0001;
 458                 break;
 459         case SND_SOC_DAIFMT_DSP_A:
 460                 iface |= 0x0003;
 461                 break;
 462         case SND_SOC_DAIFMT_DSP_B:
 463                 iface |= 0x0013;
 464                 break;
 465         default:
 466                 return -EINVAL;
 467         }
 468
 469         /* clock inversion */
 470         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 471         case SND_SOC_DAIFMT_NB_NF:
 472                 break;
 473         case SND_SOC_DAIFMT_IB_IF:
 474                 iface |= 0x0090;
 475                 break;
 476         case SND_SOC_DAIFMT_IB_NF:
 477                 iface |= 0x0080;
 478                 break;
 479         case SND_SOC_DAIFMT_NB_IF:
 480                 iface |= 0x0010;
 481                 break;
 482         default:
 483                 return -EINVAL;
 484         }
 485
 486         /* set iface */
 487         snd_soc_write(codec, WM8960_IFACE1, iface);
 488         return 0;
 489 }
 490
 491 static struct {
 492         int rate;
 493         unsigned int val;
 494 } alc_rates[] = {
 495         { 48000, 0 },
 496         { 44100, 0 },
 497         { 32000, 1 },
 498         { 22050, 2 },
 499         { 24000, 2 },
 500         { 16000, 3 },
 501         { 11250, 4 },
 502         { 12000, 4 },
 503         {  8000, 5 },
 504 };
 505
 506 static int wm8960_hw_params(struct snd_pcm_substream *substream,
 507                             struct snd_pcm_hw_params *params,
 508                             struct snd_soc_dai *dai)
 509 {
 510         struct snd_soc_codec *codec = dai->codec;
 511         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 512         u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 513         int i;
 514
 515         /* bit size */
 516         switch (params_format(params)) {
 517         case SNDRV_PCM_FORMAT_S16_LE:
 518                 break;
 519         case SNDRV_PCM_FORMAT_S20_3LE:
 520                 iface |= 0x0004;
 521                 break;
 522         case SNDRV_PCM_FORMAT_S24_LE:
 523                 iface |= 0x0008;
 524                 break;
 525         }
 526
 527         /* Update filters for the new rate */
 528         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 529                 wm8960->playback_fs = params_rate(params);
 530                 wm8960_set_deemph(codec);
 531         } else {
 532                 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
 533                         if (alc_rates[i].rate == params_rate(params))
 534                                 snd_soc_update_bits(codec,
 535                                                     WM8960_ADDCTL3, 0x7,
 536                                                     alc_rates[i].val);
 537         }
 538
 539         /* set iface */
 540         snd_soc_write(codec, WM8960_IFACE1, iface);
 541         return 0;
 542 }
 543
 544 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 545 {
 546         struct snd_soc_codec *codec = dai->codec;
 547
 548         if (mute)
 549                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
 550         else
 551                 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
 552         return 0;
 553 }
 554
 555 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 556                                       enum snd_soc_bias_level level)
 557 {
 558         switch (level) {
 559         case SND_SOC_BIAS_ON:
 560                 break;
 561
 562         case SND_SOC_BIAS_PREPARE:
 563                 /* Set VMID to 2x50k */
 564                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
 565                 break;
 566
 567         case SND_SOC_BIAS_STANDBY:
 568                 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 569                         snd_soc_cache_sync(codec);
 570
 571                         /* Enable anti-pop features */
 572                         snd_soc_write(codec, WM8960_APOP1,
 573                                       WM8960_POBCTRL | WM8960_SOFT_ST |
 574                                       WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 575
 576                         /* Enable & ramp VMID at 2x50k */
 577                         snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
 578                         msleep(100);
 579
 580                         /* Enable VREF */
 581                         snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
 582                                             WM8960_VREF);
 583
 584                         /* Disable anti-pop features */
 585                         snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 586                 }
 587
 588                 /* Set VMID to 2x250k */
 589                 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
 590                 break;
 591
 592         case SND_SOC_BIAS_OFF:
 593                 /* Enable anti-pop features */
 594                 snd_soc_write(codec, WM8960_APOP1,
 595                              WM8960_POBCTRL | WM8960_SOFT_ST |
 596                              WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 597
 598                 /* Disable VMID and VREF, let them discharge */
 599                 snd_soc_write(codec, WM8960_POWER1, 0);
 600                 msleep(600);
 601                 break;
 602         }
 603
 604         codec->dapm.bias_level = level;
 605
 606         return 0;
 607 }
 608
 609 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 610                                          enum snd_soc_bias_level level)
 611 {
 612         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 613         int reg;
 614
 615         switch (level) {
 616         case SND_SOC_BIAS_ON:
 617                 break;
 618
 619         case SND_SOC_BIAS_PREPARE:
 620                 switch (codec->dapm.bias_level) {
 621                 case SND_SOC_BIAS_STANDBY:
 622                         /* Enable anti pop mode */
 623                         snd_soc_update_bits(codec, WM8960_APOP1,
 624                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 625                                             WM8960_BUFDCOPEN,
 626                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 627                                             WM8960_BUFDCOPEN);
 628
 629                         /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 630                         reg = 0;
 631                         if (wm8960->lout1 && wm8960->lout1->power)
 632                                 reg |= WM8960_PWR2_LOUT1;
 633                         if (wm8960->rout1 && wm8960->rout1->power)
 634                                 reg |= WM8960_PWR2_ROUT1;
 635                         if (wm8960->out3 && wm8960->out3->power)
 636                                 reg |= WM8960_PWR2_OUT3;
 637                         snd_soc_update_bits(codec, WM8960_POWER2,
 638                                             WM8960_PWR2_LOUT1 |
 639                                             WM8960_PWR2_ROUT1 |
 640                                             WM8960_PWR2_OUT3, reg);
 641
 642                         /* Enable VMID at 2*50k */
 643                         snd_soc_update_bits(codec, WM8960_POWER1,
 644                                             WM8960_VMID_MASK, 0x80);
 645
 646                         /* Ramp */
 647                         msleep(100);
 648
 649                         /* Enable VREF */
 650                         snd_soc_update_bits(codec, WM8960_POWER1,
 651                                             WM8960_VREF, WM8960_VREF);
 652
 653                         msleep(100);
 654                         break;
 655
 656                 case SND_SOC_BIAS_ON:
 657                         /* Enable anti-pop mode */
 658                         snd_soc_update_bits(codec, WM8960_APOP1,
 659                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 660                                             WM8960_BUFDCOPEN,
 661                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 662                                             WM8960_BUFDCOPEN);
 663
 664                         /* Disable VMID and VREF */
 665                         snd_soc_update_bits(codec, WM8960_POWER1,
 666                                             WM8960_VREF | WM8960_VMID_MASK, 0);
 667                         break;
 668
 669                 case SND_SOC_BIAS_OFF:
 670                         snd_soc_cache_sync(codec);
 671                         break;
 672                 default:
 673                         break;
 674                 }
 675                 break;
 676
 677         case SND_SOC_BIAS_STANDBY:
 678                 switch (codec->dapm.bias_level) {
 679                 case SND_SOC_BIAS_PREPARE:
 680                         /* Disable HP discharge */
 681                         snd_soc_update_bits(codec, WM8960_APOP2,
 682                                             WM8960_DISOP | WM8960_DRES_MASK,
 683                                             0);
 684
 685                         /* Disable anti-pop features */
 686                         snd_soc_update_bits(codec, WM8960_APOP1,
 687                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 688                                             WM8960_BUFDCOPEN,
 689                                             WM8960_POBCTRL | WM8960_SOFT_ST |
 690                                             WM8960_BUFDCOPEN);
 691                         break;
 692
 693                 default:
 694                         break;
 695                 }
 696                 break;
 697
 698         case SND_SOC_BIAS_OFF:
 699                 break;
 700         }
 701
 702         codec->dapm.bias_level = level;
 703
 704         return 0;
 705 }
 706
 707 /* PLL divisors */
 708 struct _pll_div {
 709         u32 pre_div:1;
 710         u32 n:4;
 711         u32 k:24;
 712 };
 713
 714 /* The size in bits of the pll divide multiplied by 10
 715  * to allow rounding later */
 716 #define FIXED_PLL_SIZE ((1 << 24) * 10)
 717
 718 static int pll_factors(unsigned int source, unsigned int target,
 719                        struct _pll_div *pll_div)
 720 {
 721         unsigned long long Kpart;
 722         unsigned int K, Ndiv, Nmod;
 723
 724         pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 725
 726         /* Scale up target to PLL operating frequency */
 727         target *= 4;
 728
 729         Ndiv = target / source;
 730         if (Ndiv < 6) {
 731                 source >>= 1;
 732                 pll_div->pre_div = 1;
 733                 Ndiv = target / source;
 734         } else
 735                 pll_div->pre_div = 0;
 736
 737         if ((Ndiv < 6) || (Ndiv > 12)) {
 738                 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 739                 return -EINVAL;
 740         }
 741
 742         pll_div->n = Ndiv;
 743         Nmod = target % source;
 744         Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 745
 746         do_div(Kpart, source);
 747
 748         K = Kpart & 0xFFFFFFFF;
 749
 750         /* Check if we need to round */
 751         if ((K % 10) >= 5)
 752                 K += 5;
 753
 754         /* Move down to proper range now rounding is done */
 755         K /= 10;
 756
 757         pll_div->k = K;
 758
 759         pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 760                  pll_div->n, pll_div->k, pll_div->pre_div);
 761
 762         return 0;
 763 }
 764
 765 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 766                 int source, unsigned int freq_in, unsigned int freq_out)
 767 {
 768         struct snd_soc_codec *codec = codec_dai->codec;
 769         u16 reg;
 770         static struct _pll_div pll_div;
 771         int ret;
 772
 773         if (freq_in && freq_out) {
 774                 ret = pll_factors(freq_in, freq_out, &pll_div);
 775                 if (ret != 0)
 776                         return ret;
 777         }
 778
 779         /* Disable the PLL: even if we are changing the frequency the
 780          * PLL needs to be disabled while we do so. */
 781         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
 782         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
 783
 784         if (!freq_in || !freq_out)
 785                 return 0;
 786
 787         reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 788         reg |= pll_div.pre_div << 4;
 789         reg |= pll_div.n;
 790
 791         if (pll_div.k) {
 792                 reg |= 0x20;
 793
 794                 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 795                 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 796                 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 797         }
 798         snd_soc_write(codec, WM8960_PLL1, reg);
 799
 800         /* Turn it on */
 801         snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
 802         msleep(250);
 803         snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
 804
 805         return 0;
 806 }
 807
 808 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 809                 int div_id, int div)
 810 {
 811         struct snd_soc_codec *codec = codec_dai->codec;
 812         u16 reg;
 813
 814         switch (div_id) {
 815         case WM8960_SYSCLKDIV:
 816                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 817                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 818                 break;
 819         case WM8960_DACDIV:
 820                 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 821                 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 822                 break;
 823         case WM8960_OPCLKDIV:
 824                 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 825                 snd_soc_write(codec, WM8960_PLL1, reg | div);
 826                 break;
 827         case WM8960_DCLKDIV:
 828                 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 829                 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 830                 break;
 831         case WM8960_TOCLKSEL:
 832                 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 833                 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 834                 break;
 835         default:
 836                 return -EINVAL;
 837         }
 838
 839         return 0;
 840 }
 841
 842 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 843                                  enum snd_soc_bias_level level)
 844 {
 845         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 846
 847         return wm8960->set_bias_level(codec, level);
 848 }
 849
 850 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 851
 852 #define WM8960_FORMATS \
 853         (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 854         SNDRV_PCM_FMTBIT_S24_LE)
 855
 856 static const struct snd_soc_dai_ops wm8960_dai_ops = {
 857         .hw_params = wm8960_hw_params,
 858         .digital_mute = wm8960_mute,
 859         .set_fmt = wm8960_set_dai_fmt,
 860         .set_clkdiv = wm8960_set_dai_clkdiv,
 861         .set_pll = wm8960_set_dai_pll,
 862 };
 863
 864 static struct snd_soc_dai_driver wm8960_dai = {
 865         .name = "wm8960-hifi",
 866         .playback = {
 867                 .stream_name = "Playback",
 868                 .channels_min = 1,
 869                 .channels_max = 2,
 870                 .rates = WM8960_RATES,
 871                 .formats = WM8960_FORMATS,},
 872         .capture = {
 873                 .stream_name = "Capture",
 874                 .channels_min = 1,
 875                 .channels_max = 2,
 876                 .rates = WM8960_RATES,
 877                 .formats = WM8960_FORMATS,},
 878         .ops = &wm8960_dai_ops,
 879         .symmetric_rates = 1,
 880 };
 881
 882 static int wm8960_suspend(struct snd_soc_codec *codec)
 883 {
 884         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 885
 886         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 887         return 0;
 888 }
 889
 890 static int wm8960_resume(struct snd_soc_codec *codec)
 891 {
 892         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 893
 894         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 895         return 0;
 896 }
 897
 898 static int wm8960_probe(struct snd_soc_codec *codec)
 899 {
 900         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 901         struct wm8960_data *pdata = dev_get_platdata(codec->dev);
 902         int ret;
 903
 904         wm8960->set_bias_level = wm8960_set_bias_level_out3;
 905
 906         if (!pdata) {
 907                 dev_warn(codec->dev, "No platform data supplied\n");
 908         } else {
 909                 if (pdata->dres > WM8960_DRES_MAX) {
 910                         dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 911                         pdata->dres = 0;
 912                 }
 913
 914                 if (pdata->capless)
 915                         wm8960->set_bias_level = wm8960_set_bias_level_capless;
 916         }
 917
 918         ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8960->control_type);
 919         if (ret < 0) {
 920                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 921                 return ret;
 922         }
 923
 924         ret = wm8960_reset(codec);
 925         if (ret < 0) {
 926                 dev_err(codec->dev, "Failed to issue reset\n");
 927                 return ret;
 928         }
 929
 930         wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 931
 932         /* Latch the update bits */
 933         snd_soc_update_bits(codec, WM8960_LINVOL, 0x100, 0x100);
 934         snd_soc_update_bits(codec, WM8960_RINVOL, 0x100, 0x100);
 935         snd_soc_update_bits(codec, WM8960_LADC, 0x100, 0x100);
 936         snd_soc_update_bits(codec, WM8960_RADC, 0x100, 0x100);
 937         snd_soc_update_bits(codec, WM8960_LDAC, 0x100, 0x100);
 938         snd_soc_update_bits(codec, WM8960_RDAC, 0x100, 0x100);
 939         snd_soc_update_bits(codec, WM8960_LOUT1, 0x100, 0x100);
 940         snd_soc_update_bits(codec, WM8960_ROUT1, 0x100, 0x100);
 941         snd_soc_update_bits(codec, WM8960_LOUT2, 0x100, 0x100);
 942         snd_soc_update_bits(codec, WM8960_ROUT2, 0x100, 0x100);
 943
 944         snd_soc_add_codec_controls(codec, wm8960_snd_controls,
 945                                      ARRAY_SIZE(wm8960_snd_controls));
 946         wm8960_add_widgets(codec);
 947
 948         return 0;
 949 }
 950
 951 /* power down chip */
 952 static int wm8960_remove(struct snd_soc_codec *codec)
 953 {
 954         struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 955
 956         wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 957         return 0;
 958 }
 959
 960 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
 961         .probe =        wm8960_probe,
 962         .remove =       wm8960_remove,
 963         .suspend =      wm8960_suspend,
 964         .resume =       wm8960_resume,
 965         .set_bias_level = wm8960_set_bias_level,
 966         .reg_cache_size = ARRAY_SIZE(wm8960_reg),
 967         .reg_word_size = sizeof(u16),
 968         .reg_cache_default = wm8960_reg,
 969 };
 970
 971 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
 972                                       const struct i2c_device_id *id)
 973 {
 974         struct wm8960_priv *wm8960;
 975         int ret;
 976
 977         wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
 978                               GFP_KERNEL);
 979         if (wm8960 == NULL)
 980                 return -ENOMEM;
 981
 982         i2c_set_clientdata(i2c, wm8960);
 983         wm8960->control_type = SND_SOC_I2C;
 984
 985         ret = snd_soc_register_codec(&i2c->dev,
 986                         &soc_codec_dev_wm8960, &wm8960_dai, 1);
 987
 988         return ret;
 989 }
 990
 991 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
 992 {
 993         snd_soc_unregister_codec(&client->dev);
 994         return 0;
 995 }
 996
 997 static const struct i2c_device_id wm8960_i2c_id[] = {
 998         { "wm8960", 0 },
 999         { }
1000 };
1001 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1002
1003 static struct i2c_driver wm8960_i2c_driver = {
1004         .driver = {
1005                 .name = "wm8960",
1006                 .owner = THIS_MODULE,
1007         },
1008         .probe =    wm8960_i2c_probe,
1009         .remove =   __devexit_p(wm8960_i2c_remove),
1010         .id_table = wm8960_i2c_id,
1011 };
1012
1013 static int __init wm8960_modinit(void)
1014 {
1015         int ret = 0;
1016         ret = i2c_add_driver(&wm8960_i2c_driver);
1017         if (ret != 0) {
1018                 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1019                        ret);
1020         }
1021         return ret;
1022 }
1023 module_init(wm8960_modinit);
1024
1025 static void __exit wm8960_exit(void)
1026 {
1027         i2c_del_driver(&wm8960_i2c_driver);
1028 }
1029 module_exit(wm8960_exit);
1030
1031 MODULE_DESCRIPTION("ASoC WM8960 driver");
1032 MODULE_AUTHOR("Liam Girdwood");
1033 MODULE_LICENSE("GPL");