linux/sound/soc/codecs/wm8960.c
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   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/initval.h>
  24#include <sound/tlv.h>
  25#include <sound/wm8960.h>
  26
  27#include "wm8960.h"
  28
  29#define AUDIO_NAME "wm8960"
  30
  31/* R25 - Power 1 */
  32#define WM8960_VMID_MASK 0x180
  33#define WM8960_VREF      0x40
  34
  35/* R26 - Power 2 */
  36#define WM8960_PWR2_LOUT1       0x40
  37#define WM8960_PWR2_ROUT1       0x20
  38#define WM8960_PWR2_OUT3        0x02
  39
  40/* R28 - Anti-pop 1 */
  41#define WM8960_POBCTRL   0x80
  42#define WM8960_BUFDCOPEN 0x10
  43#define WM8960_BUFIOEN   0x08
  44#define WM8960_SOFT_ST   0x04
  45#define WM8960_HPSTBY    0x01
  46
  47/* R29 - Anti-pop 2 */
  48#define WM8960_DISOP     0x40
  49#define WM8960_DRES_MASK 0x30
  50
  51/*
  52 * wm8960 register cache
  53 * We can't read the WM8960 register space when we are
  54 * using 2 wire for device control, so we cache them instead.
  55 */
  56static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
  57        0x0097, 0x0097, 0x0000, 0x0000,
  58        0x0000, 0x0008, 0x0000, 0x000a,
  59        0x01c0, 0x0000, 0x00ff, 0x00ff,
  60        0x0000, 0x0000, 0x0000, 0x0000,
  61        0x0000, 0x007b, 0x0100, 0x0032,
  62        0x0000, 0x00c3, 0x00c3, 0x01c0,
  63        0x0000, 0x0000, 0x0000, 0x0000,
  64        0x0000, 0x0000, 0x0000, 0x0000,
  65        0x0100, 0x0100, 0x0050, 0x0050,
  66        0x0050, 0x0050, 0x0000, 0x0000,
  67        0x0000, 0x0000, 0x0040, 0x0000,
  68        0x0000, 0x0050, 0x0050, 0x0000,
  69        0x0002, 0x0037, 0x004d, 0x0080,
  70        0x0008, 0x0031, 0x0026, 0x00e9,
  71};
  72
  73struct wm8960_priv {
  74        enum snd_soc_control_type control_type;
  75        int (*set_bias_level)(struct snd_soc_codec *,
  76                              enum snd_soc_bias_level level);
  77        struct snd_soc_dapm_widget *lout1;
  78        struct snd_soc_dapm_widget *rout1;
  79        struct snd_soc_dapm_widget *out3;
  80        bool deemph;
  81        int playback_fs;
  82};
  83
  84#define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
  85
  86/* enumerated controls */
  87static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
  88        "Right Inverted", "Stereo Inversion"};
  89static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
  90static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
  91static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
  92static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
  93
  94static const struct soc_enum wm8960_enum[] = {
  95        SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
  96        SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
  97        SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
  98        SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
  99        SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
 100        SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
 101};
 102
 103static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
 104
 105static int wm8960_set_deemph(struct snd_soc_codec *codec)
 106{
 107        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 108        int val, i, best;
 109
 110        /* If we're using deemphasis select the nearest available sample
 111         * rate.
 112         */
 113        if (wm8960->deemph) {
 114                best = 1;
 115                for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
 116                        if (abs(deemph_settings[i] - wm8960->playback_fs) <
 117                            abs(deemph_settings[best] - wm8960->playback_fs))
 118                                best = i;
 119                }
 120
 121                val = best << 1;
 122        } else {
 123                val = 0;
 124        }
 125
 126        dev_dbg(codec->dev, "Set deemphasis %d\n", val);
 127
 128        return snd_soc_update_bits(codec, WM8960_DACCTL1,
 129                                   0x6, val);
 130}
 131
 132static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
 133                             struct snd_ctl_elem_value *ucontrol)
 134{
 135        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 136        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 137
 138        ucontrol->value.enumerated.item[0] = wm8960->deemph;
 139        return 0;
 140}
 141
 142static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
 143                             struct snd_ctl_elem_value *ucontrol)
 144{
 145        struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 146        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 147        int deemph = ucontrol->value.enumerated.item[0];
 148
 149        if (deemph > 1)
 150                return -EINVAL;
 151
 152        wm8960->deemph = deemph;
 153
 154        return wm8960_set_deemph(codec);
 155}
 156
 157static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
 158static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
 159static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
 160static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
 161
 162static const struct snd_kcontrol_new wm8960_snd_controls[] = {
 163SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
 164                 0, 63, 0, adc_tlv),
 165SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
 166        6, 1, 0),
 167SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
 168        7, 1, 0),
 169
 170SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
 171                 0, 255, 0, dac_tlv),
 172
 173SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
 174                 0, 127, 0, out_tlv),
 175SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
 176        7, 1, 0),
 177
 178SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
 179                 0, 127, 0, out_tlv),
 180SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
 181        7, 1, 0),
 182SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
 183SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
 184
 185SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
 186SOC_ENUM("ADC Polarity", wm8960_enum[0]),
 187SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
 188
 189SOC_ENUM("DAC Polarity", wm8960_enum[2]),
 190SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
 191                    wm8960_get_deemph, wm8960_put_deemph),
 192
 193SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
 194SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
 195SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
 196SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
 197
 198SOC_ENUM("ALC Function", wm8960_enum[4]),
 199SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
 200SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
 201SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
 202SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
 203SOC_ENUM("ALC Mode", wm8960_enum[5]),
 204SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
 205SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
 206
 207SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
 208SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
 209
 210SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
 211        0, 127, 0),
 212
 213SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
 214               WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
 215SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
 216               WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
 217SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 218               WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 219SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 220               WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
 221};
 222
 223static const struct snd_kcontrol_new wm8960_lin_boost[] = {
 224SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
 225SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
 226SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
 227};
 228
 229static const struct snd_kcontrol_new wm8960_lin[] = {
 230SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
 231};
 232
 233static const struct snd_kcontrol_new wm8960_rin_boost[] = {
 234SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
 235SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
 236SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
 237};
 238
 239static const struct snd_kcontrol_new wm8960_rin[] = {
 240SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
 241};
 242
 243static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
 244SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
 245SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
 246SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
 247};
 248
 249static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
 250SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
 251SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
 252SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
 253};
 254
 255static const struct snd_kcontrol_new wm8960_mono_out[] = {
 256SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
 257SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
 258};
 259
 260static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
 261SND_SOC_DAPM_INPUT("LINPUT1"),
 262SND_SOC_DAPM_INPUT("RINPUT1"),
 263SND_SOC_DAPM_INPUT("LINPUT2"),
 264SND_SOC_DAPM_INPUT("RINPUT2"),
 265SND_SOC_DAPM_INPUT("LINPUT3"),
 266SND_SOC_DAPM_INPUT("RINPUT3"),
 267
 268SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
 269
 270SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
 271                   wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
 272SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
 273                   wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
 274
 275SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
 276                   wm8960_lin, ARRAY_SIZE(wm8960_lin)),
 277SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
 278                   wm8960_rin, ARRAY_SIZE(wm8960_rin)),
 279
 280SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
 281SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
 282
 283SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
 284SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
 285
 286SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
 287        &wm8960_loutput_mixer[0],
 288        ARRAY_SIZE(wm8960_loutput_mixer)),
 289SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
 290        &wm8960_routput_mixer[0],
 291        ARRAY_SIZE(wm8960_routput_mixer)),
 292
 293SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
 294SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
 295
 296SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
 297SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
 298
 299SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
 300SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
 301
 302SND_SOC_DAPM_OUTPUT("SPK_LP"),
 303SND_SOC_DAPM_OUTPUT("SPK_LN"),
 304SND_SOC_DAPM_OUTPUT("HP_L"),
 305SND_SOC_DAPM_OUTPUT("HP_R"),
 306SND_SOC_DAPM_OUTPUT("SPK_RP"),
 307SND_SOC_DAPM_OUTPUT("SPK_RN"),
 308SND_SOC_DAPM_OUTPUT("OUT3"),
 309};
 310
 311static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
 312SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
 313        &wm8960_mono_out[0],
 314        ARRAY_SIZE(wm8960_mono_out)),
 315};
 316
 317/* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
 318static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
 319SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
 320};
 321
 322static const struct snd_soc_dapm_route audio_paths[] = {
 323        { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
 324        { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
 325        { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
 326
 327        { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
 328        { "Left Input Mixer", NULL, "LINPUT1", },  /* Really Boost Switch */
 329        { "Left Input Mixer", NULL, "LINPUT2" },
 330        { "Left Input Mixer", NULL, "LINPUT3" },
 331
 332        { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
 333        { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
 334        { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
 335
 336        { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
 337        { "Right Input Mixer", NULL, "RINPUT1", },  /* Really Boost Switch */
 338        { "Right Input Mixer", NULL, "RINPUT2" },
 339        { "Right Input Mixer", NULL, "LINPUT3" },
 340
 341        { "Left ADC", NULL, "Left Input Mixer" },
 342        { "Right ADC", NULL, "Right Input Mixer" },
 343
 344        { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
 345        { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
 346        { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
 347
 348        { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
 349        { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
 350        { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
 351
 352        { "LOUT1 PGA", NULL, "Left Output Mixer" },
 353        { "ROUT1 PGA", NULL, "Right Output Mixer" },
 354
 355        { "HP_L", NULL, "LOUT1 PGA" },
 356        { "HP_R", NULL, "ROUT1 PGA" },
 357
 358        { "Left Speaker PGA", NULL, "Left Output Mixer" },
 359        { "Right Speaker PGA", NULL, "Right Output Mixer" },
 360
 361        { "Left Speaker Output", NULL, "Left Speaker PGA" },
 362        { "Right Speaker Output", NULL, "Right Speaker PGA" },
 363
 364        { "SPK_LN", NULL, "Left Speaker Output" },
 365        { "SPK_LP", NULL, "Left Speaker Output" },
 366        { "SPK_RN", NULL, "Right Speaker Output" },
 367        { "SPK_RP", NULL, "Right Speaker Output" },
 368};
 369
 370static const struct snd_soc_dapm_route audio_paths_out3[] = {
 371        { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
 372        { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
 373
 374        { "OUT3", NULL, "Mono Output Mixer", }
 375};
 376
 377static const struct snd_soc_dapm_route audio_paths_capless[] = {
 378        { "HP_L", NULL, "OUT3 VMID" },
 379        { "HP_R", NULL, "OUT3 VMID" },
 380
 381        { "OUT3 VMID", NULL, "Left Output Mixer" },
 382        { "OUT3 VMID", NULL, "Right Output Mixer" },
 383};
 384
 385static int wm8960_add_widgets(struct snd_soc_codec *codec)
 386{
 387        struct wm8960_data *pdata = codec->dev->platform_data;
 388        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 389        struct snd_soc_dapm_context *dapm = &codec->dapm;
 390        struct snd_soc_dapm_widget *w;
 391
 392        snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
 393                                  ARRAY_SIZE(wm8960_dapm_widgets));
 394
 395        snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
 396
 397        /* In capless mode OUT3 is used to provide VMID for the
 398         * headphone outputs, otherwise it is used as a mono mixer.
 399         */
 400        if (pdata && pdata->capless) {
 401                snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
 402                                          ARRAY_SIZE(wm8960_dapm_widgets_capless));
 403
 404                snd_soc_dapm_add_routes(dapm, audio_paths_capless,
 405                                        ARRAY_SIZE(audio_paths_capless));
 406        } else {
 407                snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
 408                                          ARRAY_SIZE(wm8960_dapm_widgets_out3));
 409
 410                snd_soc_dapm_add_routes(dapm, audio_paths_out3,
 411                                        ARRAY_SIZE(audio_paths_out3));
 412        }
 413
 414        /* We need to power up the headphone output stage out of
 415         * sequence for capless mode.  To save scanning the widget
 416         * list each time to find the desired power state do so now
 417         * and save the result.
 418         */
 419        list_for_each_entry(w, &codec->card->widgets, list) {
 420                if (w->dapm != &codec->dapm)
 421                        continue;
 422                if (strcmp(w->name, "LOUT1 PGA") == 0)
 423                        wm8960->lout1 = w;
 424                if (strcmp(w->name, "ROUT1 PGA") == 0)
 425                        wm8960->rout1 = w;
 426                if (strcmp(w->name, "OUT3 VMID") == 0)
 427                        wm8960->out3 = w;
 428        }
 429        
 430        return 0;
 431}
 432
 433static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
 434                unsigned int fmt)
 435{
 436        struct snd_soc_codec *codec = codec_dai->codec;
 437        u16 iface = 0;
 438
 439        /* set master/slave audio interface */
 440        switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 441        case SND_SOC_DAIFMT_CBM_CFM:
 442                iface |= 0x0040;
 443                break;
 444        case SND_SOC_DAIFMT_CBS_CFS:
 445                break;
 446        default:
 447                return -EINVAL;
 448        }
 449
 450        /* interface format */
 451        switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 452        case SND_SOC_DAIFMT_I2S:
 453                iface |= 0x0002;
 454                break;
 455        case SND_SOC_DAIFMT_RIGHT_J:
 456                break;
 457        case SND_SOC_DAIFMT_LEFT_J:
 458                iface |= 0x0001;
 459                break;
 460        case SND_SOC_DAIFMT_DSP_A:
 461                iface |= 0x0003;
 462                break;
 463        case SND_SOC_DAIFMT_DSP_B:
 464                iface |= 0x0013;
 465                break;
 466        default:
 467                return -EINVAL;
 468        }
 469
 470        /* clock inversion */
 471        switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 472        case SND_SOC_DAIFMT_NB_NF:
 473                break;
 474        case SND_SOC_DAIFMT_IB_IF:
 475                iface |= 0x0090;
 476                break;
 477        case SND_SOC_DAIFMT_IB_NF:
 478                iface |= 0x0080;
 479                break;
 480        case SND_SOC_DAIFMT_NB_IF:
 481                iface |= 0x0010;
 482                break;
 483        default:
 484                return -EINVAL;
 485        }
 486
 487        /* set iface */
 488        snd_soc_write(codec, WM8960_IFACE1, iface);
 489        return 0;
 490}
 491
 492static struct {
 493        int rate;
 494        unsigned int val;
 495} alc_rates[] = {
 496        { 48000, 0 },
 497        { 44100, 0 },
 498        { 32000, 1 },
 499        { 22050, 2 },
 500        { 24000, 2 },
 501        { 16000, 3 },
 502        { 11250, 4 },
 503        { 12000, 4 },
 504        {  8000, 5 },
 505};
 506
 507static int wm8960_hw_params(struct snd_pcm_substream *substream,
 508                            struct snd_pcm_hw_params *params,
 509                            struct snd_soc_dai *dai)
 510{
 511        struct snd_soc_pcm_runtime *rtd = substream->private_data;
 512        struct snd_soc_codec *codec = rtd->codec;
 513        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 514        u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
 515        int i;
 516
 517        /* bit size */
 518        switch (params_format(params)) {
 519        case SNDRV_PCM_FORMAT_S16_LE:
 520                break;
 521        case SNDRV_PCM_FORMAT_S20_3LE:
 522                iface |= 0x0004;
 523                break;
 524        case SNDRV_PCM_FORMAT_S24_LE:
 525                iface |= 0x0008;
 526                break;
 527        }
 528
 529        /* Update filters for the new rate */
 530        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 531                wm8960->playback_fs = params_rate(params);
 532                wm8960_set_deemph(codec);
 533        } else {
 534                for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
 535                        if (alc_rates[i].rate == params_rate(params))
 536                                snd_soc_update_bits(codec,
 537                                                    WM8960_ADDCTL3, 0x7,
 538                                                    alc_rates[i].val);
 539        }
 540
 541        /* set iface */
 542        snd_soc_write(codec, WM8960_IFACE1, iface);
 543        return 0;
 544}
 545
 546static int wm8960_mute(struct snd_soc_dai *dai, int mute)
 547{
 548        struct snd_soc_codec *codec = dai->codec;
 549        u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
 550
 551        if (mute)
 552                snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
 553        else
 554                snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
 555        return 0;
 556}
 557
 558static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
 559                                      enum snd_soc_bias_level level)
 560{
 561        u16 reg;
 562
 563        switch (level) {
 564        case SND_SOC_BIAS_ON:
 565                break;
 566
 567        case SND_SOC_BIAS_PREPARE:
 568                /* Set VMID to 2x50k */
 569                reg = snd_soc_read(codec, WM8960_POWER1);
 570                reg &= ~0x180;
 571                reg |= 0x80;
 572                snd_soc_write(codec, WM8960_POWER1, reg);
 573                break;
 574
 575        case SND_SOC_BIAS_STANDBY:
 576                if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 577                        snd_soc_cache_sync(codec);
 578
 579                        /* Enable anti-pop features */
 580                        snd_soc_write(codec, WM8960_APOP1,
 581                                      WM8960_POBCTRL | WM8960_SOFT_ST |
 582                                      WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 583
 584                        /* Enable & ramp VMID at 2x50k */
 585                        reg = snd_soc_read(codec, WM8960_POWER1);
 586                        reg |= 0x80;
 587                        snd_soc_write(codec, WM8960_POWER1, reg);
 588                        msleep(100);
 589
 590                        /* Enable VREF */
 591                        snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
 592
 593                        /* Disable anti-pop features */
 594                        snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
 595                }
 596
 597                /* Set VMID to 2x250k */
 598                reg = snd_soc_read(codec, WM8960_POWER1);
 599                reg &= ~0x180;
 600                reg |= 0x100;
 601                snd_soc_write(codec, WM8960_POWER1, reg);
 602                break;
 603
 604        case SND_SOC_BIAS_OFF:
 605                /* Enable anti-pop features */
 606                snd_soc_write(codec, WM8960_APOP1,
 607                             WM8960_POBCTRL | WM8960_SOFT_ST |
 608                             WM8960_BUFDCOPEN | WM8960_BUFIOEN);
 609
 610                /* Disable VMID and VREF, let them discharge */
 611                snd_soc_write(codec, WM8960_POWER1, 0);
 612                msleep(600);
 613                break;
 614        }
 615
 616        codec->dapm.bias_level = level;
 617
 618        return 0;
 619}
 620
 621static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
 622                                         enum snd_soc_bias_level level)
 623{
 624        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 625        int reg;
 626
 627        switch (level) {
 628        case SND_SOC_BIAS_ON:
 629                break;
 630
 631        case SND_SOC_BIAS_PREPARE:
 632                switch (codec->dapm.bias_level) {
 633                case SND_SOC_BIAS_STANDBY:
 634                        /* Enable anti pop mode */
 635                        snd_soc_update_bits(codec, WM8960_APOP1,
 636                                            WM8960_POBCTRL | WM8960_SOFT_ST |
 637                                            WM8960_BUFDCOPEN,
 638                                            WM8960_POBCTRL | WM8960_SOFT_ST |
 639                                            WM8960_BUFDCOPEN);
 640
 641                        /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
 642                        reg = 0;
 643                        if (wm8960->lout1 && wm8960->lout1->power)
 644                                reg |= WM8960_PWR2_LOUT1;
 645                        if (wm8960->rout1 && wm8960->rout1->power)
 646                                reg |= WM8960_PWR2_ROUT1;
 647                        if (wm8960->out3 && wm8960->out3->power)
 648                                reg |= WM8960_PWR2_OUT3;
 649                        snd_soc_update_bits(codec, WM8960_POWER2,
 650                                            WM8960_PWR2_LOUT1 |
 651                                            WM8960_PWR2_ROUT1 |
 652                                            WM8960_PWR2_OUT3, reg);
 653
 654                        /* Enable VMID at 2*50k */
 655                        snd_soc_update_bits(codec, WM8960_POWER1,
 656                                            WM8960_VMID_MASK, 0x80);
 657
 658                        /* Ramp */
 659                        msleep(100);
 660
 661                        /* Enable VREF */
 662                        snd_soc_update_bits(codec, WM8960_POWER1,
 663                                            WM8960_VREF, WM8960_VREF);
 664
 665                        msleep(100);
 666                        break;
 667
 668                case SND_SOC_BIAS_ON:
 669                        /* Enable anti-pop mode */
 670                        snd_soc_update_bits(codec, WM8960_APOP1,
 671                                            WM8960_POBCTRL | WM8960_SOFT_ST |
 672                                            WM8960_BUFDCOPEN,
 673                                            WM8960_POBCTRL | WM8960_SOFT_ST |
 674                                            WM8960_BUFDCOPEN);
 675
 676                        /* Disable VMID and VREF */
 677                        snd_soc_update_bits(codec, WM8960_POWER1,
 678                                            WM8960_VREF | WM8960_VMID_MASK, 0);
 679                        break;
 680
 681                case SND_SOC_BIAS_OFF:
 682                        snd_soc_cache_sync(codec);
 683                        break;
 684                default:
 685                        break;
 686                }
 687                break;
 688
 689        case SND_SOC_BIAS_STANDBY:
 690                switch (codec->dapm.bias_level) {
 691                case SND_SOC_BIAS_PREPARE:
 692                        /* Disable HP discharge */
 693                        snd_soc_update_bits(codec, WM8960_APOP2,
 694                                            WM8960_DISOP | WM8960_DRES_MASK,
 695                                            0);
 696
 697                        /* Disable anti-pop features */
 698                        snd_soc_update_bits(codec, WM8960_APOP1,
 699                                            WM8960_POBCTRL | WM8960_SOFT_ST |
 700                                            WM8960_BUFDCOPEN,
 701                                            WM8960_POBCTRL | WM8960_SOFT_ST |
 702                                            WM8960_BUFDCOPEN);
 703                        break;
 704
 705                default:
 706                        break;
 707                }
 708                break;
 709
 710        case SND_SOC_BIAS_OFF:
 711                break;
 712        }
 713
 714        codec->dapm.bias_level = level;
 715
 716        return 0;
 717}
 718
 719/* PLL divisors */
 720struct _pll_div {
 721        u32 pre_div:1;
 722        u32 n:4;
 723        u32 k:24;
 724};
 725
 726/* The size in bits of the pll divide multiplied by 10
 727 * to allow rounding later */
 728#define FIXED_PLL_SIZE ((1 << 24) * 10)
 729
 730static int pll_factors(unsigned int source, unsigned int target,
 731                       struct _pll_div *pll_div)
 732{
 733        unsigned long long Kpart;
 734        unsigned int K, Ndiv, Nmod;
 735
 736        pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
 737
 738        /* Scale up target to PLL operating frequency */
 739        target *= 4;
 740
 741        Ndiv = target / source;
 742        if (Ndiv < 6) {
 743                source >>= 1;
 744                pll_div->pre_div = 1;
 745                Ndiv = target / source;
 746        } else
 747                pll_div->pre_div = 0;
 748
 749        if ((Ndiv < 6) || (Ndiv > 12)) {
 750                pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
 751                return -EINVAL;
 752        }
 753
 754        pll_div->n = Ndiv;
 755        Nmod = target % source;
 756        Kpart = FIXED_PLL_SIZE * (long long)Nmod;
 757
 758        do_div(Kpart, source);
 759
 760        K = Kpart & 0xFFFFFFFF;
 761
 762        /* Check if we need to round */
 763        if ((K % 10) >= 5)
 764                K += 5;
 765
 766        /* Move down to proper range now rounding is done */
 767        K /= 10;
 768
 769        pll_div->k = K;
 770
 771        pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
 772                 pll_div->n, pll_div->k, pll_div->pre_div);
 773
 774        return 0;
 775}
 776
 777static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
 778                int source, unsigned int freq_in, unsigned int freq_out)
 779{
 780        struct snd_soc_codec *codec = codec_dai->codec;
 781        u16 reg;
 782        static struct _pll_div pll_div;
 783        int ret;
 784
 785        if (freq_in && freq_out) {
 786                ret = pll_factors(freq_in, freq_out, &pll_div);
 787                if (ret != 0)
 788                        return ret;
 789        }
 790
 791        /* Disable the PLL: even if we are changing the frequency the
 792         * PLL needs to be disabled while we do so. */
 793        snd_soc_write(codec, WM8960_CLOCK1,
 794                     snd_soc_read(codec, WM8960_CLOCK1) & ~1);
 795        snd_soc_write(codec, WM8960_POWER2,
 796                     snd_soc_read(codec, WM8960_POWER2) & ~1);
 797
 798        if (!freq_in || !freq_out)
 799                return 0;
 800
 801        reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
 802        reg |= pll_div.pre_div << 4;
 803        reg |= pll_div.n;
 804
 805        if (pll_div.k) {
 806                reg |= 0x20;
 807
 808                snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
 809                snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
 810                snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
 811        }
 812        snd_soc_write(codec, WM8960_PLL1, reg);
 813
 814        /* Turn it on */
 815        snd_soc_write(codec, WM8960_POWER2,
 816                     snd_soc_read(codec, WM8960_POWER2) | 1);
 817        msleep(250);
 818        snd_soc_write(codec, WM8960_CLOCK1,
 819                     snd_soc_read(codec, WM8960_CLOCK1) | 1);
 820
 821        return 0;
 822}
 823
 824static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
 825                int div_id, int div)
 826{
 827        struct snd_soc_codec *codec = codec_dai->codec;
 828        u16 reg;
 829
 830        switch (div_id) {
 831        case WM8960_SYSCLKDIV:
 832                reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
 833                snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 834                break;
 835        case WM8960_DACDIV:
 836                reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
 837                snd_soc_write(codec, WM8960_CLOCK1, reg | div);
 838                break;
 839        case WM8960_OPCLKDIV:
 840                reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
 841                snd_soc_write(codec, WM8960_PLL1, reg | div);
 842                break;
 843        case WM8960_DCLKDIV:
 844                reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
 845                snd_soc_write(codec, WM8960_CLOCK2, reg | div);
 846                break;
 847        case WM8960_TOCLKSEL:
 848                reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
 849                snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
 850                break;
 851        default:
 852                return -EINVAL;
 853        }
 854
 855        return 0;
 856}
 857
 858static int wm8960_set_bias_level(struct snd_soc_codec *codec,
 859                                 enum snd_soc_bias_level level)
 860{
 861        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 862
 863        return wm8960->set_bias_level(codec, level);
 864}
 865
 866#define WM8960_RATES SNDRV_PCM_RATE_8000_48000
 867
 868#define WM8960_FORMATS \
 869        (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 870        SNDRV_PCM_FMTBIT_S24_LE)
 871
 872static struct snd_soc_dai_ops wm8960_dai_ops = {
 873        .hw_params = wm8960_hw_params,
 874        .digital_mute = wm8960_mute,
 875        .set_fmt = wm8960_set_dai_fmt,
 876        .set_clkdiv = wm8960_set_dai_clkdiv,
 877        .set_pll = wm8960_set_dai_pll,
 878};
 879
 880static struct snd_soc_dai_driver wm8960_dai = {
 881        .name = "wm8960-hifi",
 882        .playback = {
 883                .stream_name = "Playback",
 884                .channels_min = 1,
 885                .channels_max = 2,
 886                .rates = WM8960_RATES,
 887                .formats = WM8960_FORMATS,},
 888        .capture = {
 889                .stream_name = "Capture",
 890                .channels_min = 1,
 891                .channels_max = 2,
 892                .rates = WM8960_RATES,
 893                .formats = WM8960_FORMATS,},
 894        .ops = &wm8960_dai_ops,
 895        .symmetric_rates = 1,
 896};
 897
 898static int wm8960_suspend(struct snd_soc_codec *codec, pm_message_t state)
 899{
 900        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 901
 902        wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 903        return 0;
 904}
 905
 906static int wm8960_resume(struct snd_soc_codec *codec)
 907{
 908        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 909
 910        wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 911        return 0;
 912}
 913
 914static int wm8960_probe(struct snd_soc_codec *codec)
 915{
 916        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 917        struct wm8960_data *pdata = dev_get_platdata(codec->dev);
 918        int ret;
 919        u16 reg;
 920
 921        wm8960->set_bias_level = wm8960_set_bias_level_out3;
 922
 923        if (!pdata) {
 924                dev_warn(codec->dev, "No platform data supplied\n");
 925        } else {
 926                if (pdata->dres > WM8960_DRES_MAX) {
 927                        dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
 928                        pdata->dres = 0;
 929                }
 930
 931                if (pdata->capless)
 932                        wm8960->set_bias_level = wm8960_set_bias_level_capless;
 933        }
 934
 935        ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8960->control_type);
 936        if (ret < 0) {
 937                dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 938                return ret;
 939        }
 940
 941        ret = wm8960_reset(codec);
 942        if (ret < 0) {
 943                dev_err(codec->dev, "Failed to issue reset\n");
 944                return ret;
 945        }
 946
 947        wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 948
 949        /* Latch the update bits */
 950        reg = snd_soc_read(codec, WM8960_LINVOL);
 951        snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
 952        reg = snd_soc_read(codec, WM8960_RINVOL);
 953        snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
 954        reg = snd_soc_read(codec, WM8960_LADC);
 955        snd_soc_write(codec, WM8960_LADC, reg | 0x100);
 956        reg = snd_soc_read(codec, WM8960_RADC);
 957        snd_soc_write(codec, WM8960_RADC, reg | 0x100);
 958        reg = snd_soc_read(codec, WM8960_LDAC);
 959        snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
 960        reg = snd_soc_read(codec, WM8960_RDAC);
 961        snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
 962        reg = snd_soc_read(codec, WM8960_LOUT1);
 963        snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
 964        reg = snd_soc_read(codec, WM8960_ROUT1);
 965        snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
 966        reg = snd_soc_read(codec, WM8960_LOUT2);
 967        snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
 968        reg = snd_soc_read(codec, WM8960_ROUT2);
 969        snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
 970
 971        snd_soc_add_controls(codec, wm8960_snd_controls,
 972                                     ARRAY_SIZE(wm8960_snd_controls));
 973        wm8960_add_widgets(codec);
 974
 975        return 0;
 976}
 977
 978/* power down chip */
 979static int wm8960_remove(struct snd_soc_codec *codec)
 980{
 981        struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
 982
 983        wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
 984        return 0;
 985}
 986
 987static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
 988        .probe =        wm8960_probe,
 989        .remove =       wm8960_remove,
 990        .suspend =      wm8960_suspend,
 991        .resume =       wm8960_resume,
 992        .set_bias_level = wm8960_set_bias_level,
 993        .reg_cache_size = ARRAY_SIZE(wm8960_reg),
 994        .reg_word_size = sizeof(u16),
 995        .reg_cache_default = wm8960_reg,
 996};
 997
 998#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 999static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
1000                                      const struct i2c_device_id *id)
1001{
1002        struct wm8960_priv *wm8960;
1003        int ret;
1004
1005        wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
1006        if (wm8960 == NULL)
1007                return -ENOMEM;
1008
1009        i2c_set_clientdata(i2c, wm8960);
1010        wm8960->control_type = SND_SOC_I2C;
1011
1012        ret = snd_soc_register_codec(&i2c->dev,
1013                        &soc_codec_dev_wm8960, &wm8960_dai, 1);
1014        if (ret < 0)
1015                kfree(wm8960);
1016        return ret;
1017}
1018
1019static __devexit int wm8960_i2c_remove(struct i2c_client *client)
1020{
1021        snd_soc_unregister_codec(&client->dev);
1022        kfree(i2c_get_clientdata(client));
1023        return 0;
1024}
1025
1026static const struct i2c_device_id wm8960_i2c_id[] = {
1027        { "wm8960", 0 },
1028        { }
1029};
1030MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1031
1032static struct i2c_driver wm8960_i2c_driver = {
1033        .driver = {
1034                .name = "wm8960-codec",
1035                .owner = THIS_MODULE,
1036        },
1037        .probe =    wm8960_i2c_probe,
1038        .remove =   __devexit_p(wm8960_i2c_remove),
1039        .id_table = wm8960_i2c_id,
1040};
1041#endif
1042
1043static int __init wm8960_modinit(void)
1044{
1045        int ret = 0;
1046#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1047        ret = i2c_add_driver(&wm8960_i2c_driver);
1048        if (ret != 0) {
1049                printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1050                       ret);
1051        }
1052#endif
1053        return ret;
1054}
1055module_init(wm8960_modinit);
1056
1057static void __exit wm8960_exit(void)
1058{
1059#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1060        i2c_del_driver(&wm8960_i2c_driver);
1061#endif
1062}
1063module_exit(wm8960_exit);
1064
1065MODULE_DESCRIPTION("ASoC WM8960 driver");
1066MODULE_AUTHOR("Liam Girdwood");
1067MODULE_LICENSE("GPL");
1068
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