sound/soc/codecs/ak4641.c

   1 /*
   2  * ak4641.c  --  AK4641 ALSA Soc Audio driver
   3  *
   4  * Copyright (C) 2008 Harald Welte <laforge@gnufiish.org>
   5  * Copyright (C) 2011 Dmitry Artamonow <mad_soft@inbox.ru>
   6  *
   7  * Based on ak4535.c by Richard Purdie
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/init.h>
  16 #include <linux/delay.h>
  17 #include <linux/gpio.h>
  18 #include <linux/pm.h>
  19 #include <linux/i2c.h>
  20 #include <linux/regmap.h>
  21 #include <linux/slab.h>
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include <sound/initval.h>
  27 #include <sound/tlv.h>
  28 #include <sound/ak4641.h>
  29
  30 /* AK4641 register space */
  31 #define AK4641_PM1              0x00
  32 #define AK4641_PM2              0x01
  33 #define AK4641_SIG1             0x02
  34 #define AK4641_SIG2             0x03
  35 #define AK4641_MODE1            0x04
  36 #define AK4641_MODE2            0x05
  37 #define AK4641_DAC              0x06
  38 #define AK4641_MIC              0x07
  39 #define AK4641_TIMER            0x08
  40 #define AK4641_ALC1             0x09
  41 #define AK4641_ALC2             0x0a
  42 #define AK4641_PGA              0x0b
  43 #define AK4641_LATT             0x0c
  44 #define AK4641_RATT             0x0d
  45 #define AK4641_VOL              0x0e
  46 #define AK4641_STATUS           0x0f
  47 #define AK4641_EQLO             0x10
  48 #define AK4641_EQMID            0x11
  49 #define AK4641_EQHI             0x12
  50 #define AK4641_BTIF             0x13
  51
  52 /* codec private data */
  53 struct ak4641_priv {
  54         struct regmap *regmap;
  55         unsigned int sysclk;
  56         int deemph;
  57         int playback_fs;
  58 };
  59
  60 /*
  61  * ak4641 register cache
  62  */
  63 static const struct reg_default ak4641_reg_defaults[] = {
  64         {  0, 0x00 }, {  1, 0x80 }, {  2, 0x00 }, {  3, 0x80 },
  65         {  4, 0x02 }, {  5, 0x00 }, {  6, 0x11 }, {  7, 0x05 },
  66         {  8, 0x00 }, {  9, 0x00 }, { 10, 0x36 }, { 11, 0x10 },
  67         { 12, 0x00 }, { 13, 0x00 }, { 14, 0x57 }, { 15, 0x00 },
  68         { 16, 0x88 }, { 17, 0x88 }, { 18, 0x08 }, { 19, 0x08 }
  69 };
  70
  71 static const int deemph_settings[] = {44100, 0, 48000, 32000};
  72
  73 static int ak4641_set_deemph(struct snd_soc_codec *codec)
  74 {
  75         struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
  76         int i, best = 0;
  77
  78         for (i = 0 ; i < ARRAY_SIZE(deemph_settings); i++) {
  79                 /* if deemphasis is on, select the nearest available rate */
  80                 if (ak4641->deemph && deemph_settings[i] != 0 &&
  81                     abs(deemph_settings[i] - ak4641->playback_fs) <
  82                     abs(deemph_settings[best] - ak4641->playback_fs))
  83                         best = i;
  84
  85                 if (!ak4641->deemph && deemph_settings[i] == 0)
  86                         best = i;
  87         }
  88
  89         dev_dbg(codec->dev, "Set deemphasis %d\n", best);
  90
  91         return snd_soc_update_bits(codec, AK4641_DAC, 0x3, best);
  92 }
  93
  94 static int ak4641_put_deemph(struct snd_kcontrol *kcontrol,
  95                                 struct snd_ctl_elem_value *ucontrol)
  96 {
  97         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
  98         struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
  99         int deemph = ucontrol->value.integer.value[0];
 100
 101         if (deemph > 1)
 102                 return -EINVAL;
 103
 104         ak4641->deemph = deemph;
 105
 106         return ak4641_set_deemph(codec);
 107 }
 108
 109 static int ak4641_get_deemph(struct snd_kcontrol *kcontrol,
 110                                 struct snd_ctl_elem_value *ucontrol)
 111 {
 112         struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
 113         struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
 114
 115         ucontrol->value.integer.value[0] = ak4641->deemph;
 116         return 0;
 117 };
 118
 119 static const char *ak4641_mono_out[] = {"(L + R)/2", "Hi-Z"};
 120 static const char *ak4641_hp_out[] = {"Stereo", "Mono"};
 121 static const char *ak4641_mic_select[] = {"Internal", "External"};
 122 static const char *ak4641_mic_or_dac[] = {"Microphone", "Voice DAC"};
 123
 124
 125 static const DECLARE_TLV_DB_SCALE(mono_gain_tlv, -1700, 2300, 0);
 126 static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 2000, 0);
 127 static const DECLARE_TLV_DB_SCALE(eq_tlv, -1050, 150, 0);
 128 static const DECLARE_TLV_DB_SCALE(master_tlv, -12750, 50, 0);
 129 static const DECLARE_TLV_DB_SCALE(mic_stereo_sidetone_tlv, -2700, 300, 0);
 130 static const DECLARE_TLV_DB_SCALE(mic_mono_sidetone_tlv, -400, 400, 0);
 131 static const DECLARE_TLV_DB_SCALE(capture_tlv, -800, 50, 0);
 132 static const DECLARE_TLV_DB_SCALE(alc_tlv, -800, 50, 0);
 133 static const DECLARE_TLV_DB_SCALE(aux_in_tlv, -2100, 300, 0);
 134
 135
 136 static SOC_ENUM_SINGLE_DECL(ak4641_mono_out_enum,
 137                             AK4641_SIG1, 6, ak4641_mono_out);
 138 static SOC_ENUM_SINGLE_DECL(ak4641_hp_out_enum,
 139                             AK4641_MODE2, 2, ak4641_hp_out);
 140 static SOC_ENUM_SINGLE_DECL(ak4641_mic_select_enum,
 141                             AK4641_MIC, 1, ak4641_mic_select);
 142 static SOC_ENUM_SINGLE_DECL(ak4641_mic_or_dac_enum,
 143                             AK4641_BTIF, 4, ak4641_mic_or_dac);
 144
 145 static const struct snd_kcontrol_new ak4641_snd_controls[] = {
 146         SOC_ENUM("Mono 1 Output", ak4641_mono_out_enum),
 147         SOC_SINGLE_TLV("Mono 1 Gain Volume", AK4641_SIG1, 7, 1, 1,
 148                                                         mono_gain_tlv),
 149         SOC_ENUM("Headphone Output", ak4641_hp_out_enum),
 150         SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
 151                                         ak4641_get_deemph, ak4641_put_deemph),
 152
 153         SOC_SINGLE_TLV("Mic Boost Volume", AK4641_MIC, 0, 1, 0, mic_boost_tlv),
 154
 155         SOC_SINGLE("ALC Operation Time", AK4641_TIMER, 0, 3, 0),
 156         SOC_SINGLE("ALC Recovery Time", AK4641_TIMER, 2, 3, 0),
 157         SOC_SINGLE("ALC ZC Time", AK4641_TIMER, 4, 3, 0),
 158
 159         SOC_SINGLE("ALC 1 Switch", AK4641_ALC1, 5, 1, 0),
 160
 161         SOC_SINGLE_TLV("ALC Volume", AK4641_ALC2, 0, 71, 0, alc_tlv),
 162         SOC_SINGLE("Left Out Enable Switch", AK4641_SIG2, 1, 1, 0),
 163         SOC_SINGLE("Right Out Enable Switch", AK4641_SIG2, 0, 1, 0),
 164
 165         SOC_SINGLE_TLV("Capture Volume", AK4641_PGA, 0, 71, 0, capture_tlv),
 166
 167         SOC_DOUBLE_R_TLV("Master Playback Volume", AK4641_LATT,
 168                                 AK4641_RATT, 0, 255, 1, master_tlv),
 169
 170         SOC_SINGLE_TLV("AUX In Volume", AK4641_VOL, 0, 15, 0, aux_in_tlv),
 171
 172         SOC_SINGLE("Equalizer Switch", AK4641_DAC, 2, 1, 0),
 173         SOC_SINGLE_TLV("EQ1 100 Hz Volume", AK4641_EQLO, 0, 15, 1, eq_tlv),
 174         SOC_SINGLE_TLV("EQ2 250 Hz Volume", AK4641_EQLO, 4, 15, 1, eq_tlv),
 175         SOC_SINGLE_TLV("EQ3 1 kHz Volume", AK4641_EQMID, 0, 15, 1, eq_tlv),
 176         SOC_SINGLE_TLV("EQ4 3.5 kHz Volume", AK4641_EQMID, 4, 15, 1, eq_tlv),
 177         SOC_SINGLE_TLV("EQ5 10 kHz Volume", AK4641_EQHI, 0, 15, 1, eq_tlv),
 178 };
 179
 180 /* Mono 1 Mixer */
 181 static const struct snd_kcontrol_new ak4641_mono1_mixer_controls[] = {
 182         SOC_DAPM_SINGLE_TLV("Mic Mono Sidetone Volume", AK4641_VOL, 7, 1, 0,
 183                                                 mic_mono_sidetone_tlv),
 184         SOC_DAPM_SINGLE("Mic Mono Sidetone Switch", AK4641_SIG1, 4, 1, 0),
 185         SOC_DAPM_SINGLE("Mono Playback Switch", AK4641_SIG1, 5, 1, 0),
 186 };
 187
 188 /* Stereo Mixer */
 189 static const struct snd_kcontrol_new ak4641_stereo_mixer_controls[] = {
 190         SOC_DAPM_SINGLE_TLV("Mic Sidetone Volume", AK4641_VOL, 4, 7, 0,
 191                                                 mic_stereo_sidetone_tlv),
 192         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4641_SIG2, 4, 1, 0),
 193         SOC_DAPM_SINGLE("Playback Switch", AK4641_SIG2, 7, 1, 0),
 194         SOC_DAPM_SINGLE("Aux Bypass Switch", AK4641_SIG2, 5, 1, 0),
 195 };
 196
 197 /* Input Mixer */
 198 static const struct snd_kcontrol_new ak4641_input_mixer_controls[] = {
 199         SOC_DAPM_SINGLE("Mic Capture Switch", AK4641_MIC, 2, 1, 0),
 200         SOC_DAPM_SINGLE("Aux Capture Switch", AK4641_MIC, 5, 1, 0),
 201 };
 202
 203 /* Mic mux */
 204 static const struct snd_kcontrol_new ak4641_mic_mux_control =
 205         SOC_DAPM_ENUM("Mic Select", ak4641_mic_select_enum);
 206
 207 /* Input mux */
 208 static const struct snd_kcontrol_new ak4641_input_mux_control =
 209         SOC_DAPM_ENUM("Input Select", ak4641_mic_or_dac_enum);
 210
 211 /* mono 2 switch */
 212 static const struct snd_kcontrol_new ak4641_mono2_control =
 213         SOC_DAPM_SINGLE("Switch", AK4641_SIG1, 0, 1, 0);
 214
 215 /* ak4641 dapm widgets */
 216 static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
 217         SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
 218                 &ak4641_stereo_mixer_controls[0],
 219                 ARRAY_SIZE(ak4641_stereo_mixer_controls)),
 220         SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
 221                 &ak4641_mono1_mixer_controls[0],
 222                 ARRAY_SIZE(ak4641_mono1_mixer_controls)),
 223         SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
 224                 &ak4641_input_mixer_controls[0],
 225                 ARRAY_SIZE(ak4641_input_mixer_controls)),
 226         SND_SOC_DAPM_MUX("Mic Mux", SND_SOC_NOPM, 0, 0,
 227                 &ak4641_mic_mux_control),
 228         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 229                 &ak4641_input_mux_control),
 230         SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
 231                 &ak4641_mono2_control),
 232
 233         SND_SOC_DAPM_OUTPUT("LOUT"),
 234         SND_SOC_DAPM_OUTPUT("ROUT"),
 235         SND_SOC_DAPM_OUTPUT("MOUT1"),
 236         SND_SOC_DAPM_OUTPUT("MOUT2"),
 237         SND_SOC_DAPM_OUTPUT("MICOUT"),
 238
 239         SND_SOC_DAPM_ADC("ADC", "HiFi Capture", AK4641_PM1, 0, 0),
 240         SND_SOC_DAPM_PGA("Mic", AK4641_PM1, 1, 0, NULL, 0),
 241         SND_SOC_DAPM_PGA("AUX In", AK4641_PM1, 2, 0, NULL, 0),
 242         SND_SOC_DAPM_PGA("Mono Out", AK4641_PM1, 3, 0, NULL, 0),
 243         SND_SOC_DAPM_PGA("Line Out", AK4641_PM1, 4, 0, NULL, 0),
 244
 245         SND_SOC_DAPM_DAC("DAC", "HiFi Playback", AK4641_PM2, 0, 0),
 246         SND_SOC_DAPM_PGA("Mono Out 2", AK4641_PM2, 3, 0, NULL, 0),
 247
 248         SND_SOC_DAPM_ADC("Voice ADC", "Voice Capture", AK4641_BTIF, 0, 0),
 249         SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", AK4641_BTIF, 1, 0),
 250
 251         SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4641_MIC, 3, 0),
 252         SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4641_MIC, 4, 0),
 253
 254         SND_SOC_DAPM_INPUT("MICIN"),
 255         SND_SOC_DAPM_INPUT("MICEXT"),
 256         SND_SOC_DAPM_INPUT("AUX"),
 257         SND_SOC_DAPM_INPUT("AIN"),
 258 };
 259
 260 static const struct snd_soc_dapm_route ak4641_audio_map[] = {
 261         /* Stereo Mixer */
 262         {"Stereo Mixer", "Playback Switch", "DAC"},
 263         {"Stereo Mixer", "Mic Sidetone Switch", "Input Mux"},
 264         {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
 265
 266         /* Mono 1 Mixer */
 267         {"Mono1 Mixer", "Mic Mono Sidetone Switch", "Input Mux"},
 268         {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
 269
 270         /* Mic */
 271         {"Mic", NULL, "AIN"},
 272         {"Mic Mux", "Internal", "Mic Int Bias"},
 273         {"Mic Mux", "External", "Mic Ext Bias"},
 274         {"Mic Int Bias", NULL, "MICIN"},
 275         {"Mic Ext Bias", NULL, "MICEXT"},
 276         {"MICOUT", NULL, "Mic Mux"},
 277
 278         /* Input Mux */
 279         {"Input Mux", "Microphone", "Mic"},
 280         {"Input Mux", "Voice DAC", "Voice DAC"},
 281
 282         /* Line Out */
 283         {"LOUT", NULL, "Line Out"},
 284         {"ROUT", NULL, "Line Out"},
 285         {"Line Out", NULL, "Stereo Mixer"},
 286
 287         /* Mono 1 Out */
 288         {"MOUT1", NULL, "Mono Out"},
 289         {"Mono Out", NULL, "Mono1 Mixer"},
 290
 291         /* Mono 2 Out */
 292         {"MOUT2", NULL, "Mono 2 Enable"},
 293         {"Mono 2 Enable", "Switch", "Mono Out 2"},
 294         {"Mono Out 2", NULL, "Stereo Mixer"},
 295
 296         {"Voice ADC", NULL, "Mono 2 Enable"},
 297
 298         /* Aux In */
 299         {"AUX In", NULL, "AUX"},
 300
 301         /* ADC */
 302         {"ADC", NULL, "Input Mixer"},
 303         {"Input Mixer", "Mic Capture Switch", "Mic"},
 304         {"Input Mixer", "Aux Capture Switch", "AUX In"},
 305 };
 306
 307 static int ak4641_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 308         int clk_id, unsigned int freq, int dir)
 309 {
 310         struct snd_soc_codec *codec = codec_dai->codec;
 311         struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
 312
 313         ak4641->sysclk = freq;
 314         return 0;
 315 }
 316
 317 static int ak4641_i2s_hw_params(struct snd_pcm_substream *substream,
 318                                  struct snd_pcm_hw_params *params,
 319                                  struct snd_soc_dai *dai)
 320 {
 321         struct snd_soc_codec *codec = dai->codec;
 322         struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
 323         int rate = params_rate(params), fs = 256;
 324         u8 mode2;
 325
 326         if (rate)
 327                 fs = ak4641->sysclk / rate;
 328         else
 329                 return -EINVAL;
 330
 331         /* set fs */
 332         switch (fs) {
 333         case 1024:
 334                 mode2 = (0x2 << 5);
 335                 break;
 336         case 512:
 337                 mode2 = (0x1 << 5);
 338                 break;
 339         case 256:
 340                 mode2 = (0x0 << 5);
 341                 break;
 342         default:
 343                 dev_err(codec->dev, "Error: unsupported fs=%d\n", fs);
 344                 return -EINVAL;
 345         }
 346
 347         snd_soc_update_bits(codec, AK4641_MODE2, (0x3 << 5), mode2);
 348
 349         /* Update de-emphasis filter for the new rate */
 350         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 351                 ak4641->playback_fs = rate;
 352                 ak4641_set_deemph(codec);
 353         }
 354
 355         return 0;
 356 }
 357
 358 static int ak4641_pcm_set_dai_fmt(struct snd_soc_dai *codec_dai,
 359                                   unsigned int fmt)
 360 {
 361         struct snd_soc_codec *codec = codec_dai->codec;
 362         u8 btif;
 363         int ret;
 364
 365         /* interface format */
 366         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 367         case SND_SOC_DAIFMT_I2S:
 368                 btif = (0x3 << 5);
 369                 break;
 370         case SND_SOC_DAIFMT_LEFT_J:
 371                 btif = (0x2 << 5);
 372                 break;
 373         case SND_SOC_DAIFMT_DSP_A:      /* MSB after FRM */
 374                 btif = (0x0 << 5);
 375                 break;
 376         case SND_SOC_DAIFMT_DSP_B:      /* MSB during FRM */
 377                 btif = (0x1 << 5);
 378                 break;
 379         default:
 380                 return -EINVAL;
 381         }
 382
 383         ret = snd_soc_update_bits(codec, AK4641_BTIF, (0x3 << 5), btif);
 384         if (ret < 0)
 385                 return ret;
 386
 387         return 0;
 388 }
 389
 390 static int ak4641_i2s_set_dai_fmt(struct snd_soc_dai *codec_dai,
 391                 unsigned int fmt)
 392 {
 393         struct snd_soc_codec *codec = codec_dai->codec;
 394         u8 mode1 = 0;
 395
 396         /* interface format */
 397         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 398         case SND_SOC_DAIFMT_I2S:
 399                 mode1 = 0x02;
 400                 break;
 401         case SND_SOC_DAIFMT_LEFT_J:
 402                 mode1 = 0x01;
 403                 break;
 404         default:
 405                 return -EINVAL;
 406         }
 407
 408         return snd_soc_write(codec, AK4641_MODE1, mode1);
 409 }
 410
 411 static int ak4641_mute(struct snd_soc_dai *dai, int mute)
 412 {
 413         struct snd_soc_codec *codec = dai->codec;
 414
 415         return snd_soc_update_bits(codec, AK4641_DAC, 0x20, mute ? 0x20 : 0);
 416 }
 417
 418 static int ak4641_set_bias_level(struct snd_soc_codec *codec,
 419         enum snd_soc_bias_level level)
 420 {
 421         struct ak4641_priv *ak4641 = snd_soc_codec_get_drvdata(codec);
 422         struct ak4641_platform_data *pdata = codec->dev->platform_data;
 423         int ret;
 424
 425         switch (level) {
 426         case SND_SOC_BIAS_ON:
 427                 /* unmute */
 428                 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0);
 429                 break;
 430         case SND_SOC_BIAS_PREPARE:
 431                 /* mute */
 432                 snd_soc_update_bits(codec, AK4641_DAC, 0x20, 0x20);
 433                 break;
 434         case SND_SOC_BIAS_STANDBY:
 435                 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
 436                         if (pdata && gpio_is_valid(pdata->gpio_power))
 437                                 gpio_set_value(pdata->gpio_power, 1);
 438                         mdelay(1);
 439                         if (pdata && gpio_is_valid(pdata->gpio_npdn))
 440                                 gpio_set_value(pdata->gpio_npdn, 1);
 441                         mdelay(1);
 442
 443                         ret = regcache_sync(ak4641->regmap);
 444                         if (ret) {
 445                                 dev_err(codec->dev,
 446                                         "Failed to sync cache: %d\n", ret);
 447                                 return ret;
 448                         }
 449                 }
 450                 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0x80);
 451                 snd_soc_update_bits(codec, AK4641_PM2, 0x80, 0);
 452                 break;
 453         case SND_SOC_BIAS_OFF:
 454                 snd_soc_update_bits(codec, AK4641_PM1, 0x80, 0);
 455                 if (pdata && gpio_is_valid(pdata->gpio_npdn))
 456                         gpio_set_value(pdata->gpio_npdn, 0);
 457                 if (pdata && gpio_is_valid(pdata->gpio_power))
 458                         gpio_set_value(pdata->gpio_power, 0);
 459                 regcache_mark_dirty(ak4641->regmap);
 460                 break;
 461         }
 462         return 0;
 463 }
 464
 465 #define AK4641_RATES    (SNDRV_PCM_RATE_8000_48000)
 466 #define AK4641_RATES_BT (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 467                          SNDRV_PCM_RATE_16000)
 468 #define AK4641_FORMATS  (SNDRV_PCM_FMTBIT_S16_LE)
 469
 470 static const struct snd_soc_dai_ops ak4641_i2s_dai_ops = {
 471         .hw_params    = ak4641_i2s_hw_params,
 472         .set_fmt      = ak4641_i2s_set_dai_fmt,
 473         .digital_mute = ak4641_mute,
 474         .set_sysclk   = ak4641_set_dai_sysclk,
 475 };
 476
 477 static const struct snd_soc_dai_ops ak4641_pcm_dai_ops = {
 478         .hw_params    = NULL, /* rates are controlled by BT chip */
 479         .set_fmt      = ak4641_pcm_set_dai_fmt,
 480         .digital_mute = ak4641_mute,
 481         .set_sysclk   = ak4641_set_dai_sysclk,
 482 };
 483
 484 static struct snd_soc_dai_driver ak4641_dai[] = {
 485 {
 486         .name = "ak4641-hifi",
 487         .id = 1,
 488         .playback = {
 489                 .stream_name = "HiFi Playback",
 490                 .channels_min = 1,
 491                 .channels_max = 2,
 492                 .rates = AK4641_RATES,
 493                 .formats = AK4641_FORMATS,
 494         },
 495         .capture = {
 496                 .stream_name = "HiFi Capture",
 497                 .channels_min = 1,
 498                 .channels_max = 2,
 499                 .rates = AK4641_RATES,
 500                 .formats = AK4641_FORMATS,
 501         },
 502         .ops = &ak4641_i2s_dai_ops,
 503         .symmetric_rates = 1,
 504 },
 505 {
 506         .name = "ak4641-voice",
 507         .id = 1,
 508         .playback = {
 509                 .stream_name = "Voice Playback",
 510                 .channels_min = 1,
 511                 .channels_max = 1,
 512                 .rates = AK4641_RATES_BT,
 513                 .formats = AK4641_FORMATS,
 514         },
 515         .capture = {
 516                 .stream_name = "Voice Capture",
 517                 .channels_min = 1,
 518                 .channels_max = 1,
 519                 .rates = AK4641_RATES_BT,
 520                 .formats = AK4641_FORMATS,
 521         },
 522         .ops = &ak4641_pcm_dai_ops,
 523         .symmetric_rates = 1,
 524 },
 525 };
 526
 527 static struct snd_soc_codec_driver soc_codec_dev_ak4641 = {
 528         .component_driver = {
 529                 .controls               = ak4641_snd_controls,
 530                 .num_controls           = ARRAY_SIZE(ak4641_snd_controls),
 531                 .dapm_widgets           = ak4641_dapm_widgets,
 532                 .num_dapm_widgets       = ARRAY_SIZE(ak4641_dapm_widgets),
 533                 .dapm_routes            = ak4641_audio_map,
 534                 .num_dapm_routes        = ARRAY_SIZE(ak4641_audio_map),
 535         },
 536         .set_bias_level         = ak4641_set_bias_level,
 537         .suspend_bias_off       = true,
 538 };
 539
 540 static const struct regmap_config ak4641_regmap = {
 541         .reg_bits = 8,
 542         .val_bits = 8,
 543
 544         .max_register = AK4641_BTIF,
 545         .reg_defaults = ak4641_reg_defaults,
 546         .num_reg_defaults = ARRAY_SIZE(ak4641_reg_defaults),
 547         .cache_type = REGCACHE_RBTREE,
 548 };
 549
 550 static int ak4641_i2c_probe(struct i2c_client *i2c,
 551                             const struct i2c_device_id *id)
 552 {
 553         struct ak4641_platform_data *pdata = i2c->dev.platform_data;
 554         struct ak4641_priv *ak4641;
 555         int ret;
 556
 557         ak4641 = devm_kzalloc(&i2c->dev, sizeof(struct ak4641_priv),
 558                               GFP_KERNEL);
 559         if (!ak4641)
 560                 return -ENOMEM;
 561
 562         ak4641->regmap = devm_regmap_init_i2c(i2c, &ak4641_regmap);
 563         if (IS_ERR(ak4641->regmap))
 564                 return PTR_ERR(ak4641->regmap);
 565
 566         if (pdata) {
 567                 if (gpio_is_valid(pdata->gpio_power)) {
 568                         ret = gpio_request_one(pdata->gpio_power,
 569                                         GPIOF_OUT_INIT_LOW, "ak4641 power");
 570                         if (ret)
 571                                 goto err_out;
 572                 }
 573                 if (gpio_is_valid(pdata->gpio_npdn)) {
 574                         ret = gpio_request_one(pdata->gpio_npdn,
 575                                         GPIOF_OUT_INIT_LOW, "ak4641 npdn");
 576                         if (ret)
 577                                 goto err_gpio;
 578
 579                         udelay(1); /* > 150 ns */
 580                         gpio_set_value(pdata->gpio_npdn, 1);
 581                 }
 582         }
 583
 584         i2c_set_clientdata(i2c, ak4641);
 585
 586         ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_ak4641,
 587                                 ak4641_dai, ARRAY_SIZE(ak4641_dai));
 588         if (ret != 0)
 589                 goto err_gpio2;
 590
 591         return 0;
 592
 593 err_gpio2:
 594         if (pdata) {
 595                 if (gpio_is_valid(pdata->gpio_power))
 596                         gpio_set_value(pdata->gpio_power, 0);
 597                 if (gpio_is_valid(pdata->gpio_npdn))
 598                         gpio_free(pdata->gpio_npdn);
 599         }
 600 err_gpio:
 601         if (pdata && gpio_is_valid(pdata->gpio_power))
 602                 gpio_free(pdata->gpio_power);
 603 err_out:
 604         return ret;
 605 }
 606
 607 static int ak4641_i2c_remove(struct i2c_client *i2c)
 608 {
 609         struct ak4641_platform_data *pdata = i2c->dev.platform_data;
 610
 611         snd_soc_unregister_codec(&i2c->dev);
 612
 613         if (pdata) {
 614                 if (gpio_is_valid(pdata->gpio_power)) {
 615                         gpio_set_value(pdata->gpio_power, 0);
 616                         gpio_free(pdata->gpio_power);
 617                 }
 618                 if (gpio_is_valid(pdata->gpio_npdn))
 619                         gpio_free(pdata->gpio_npdn);
 620         }
 621
 622         return 0;
 623 }
 624
 625 static const struct i2c_device_id ak4641_i2c_id[] = {
 626         { "ak4641", 0 },
 627         { }
 628 };
 629 MODULE_DEVICE_TABLE(i2c, ak4641_i2c_id);
 630
 631 static struct i2c_driver ak4641_i2c_driver = {
 632         .driver = {
 633                 .name = "ak4641",
 634         },
 635         .probe =    ak4641_i2c_probe,
 636         .remove =   ak4641_i2c_remove,
 637         .id_table = ak4641_i2c_id,
 638 };
 639
 640 module_i2c_driver(ak4641_i2c_driver);
 641
 642 MODULE_DESCRIPTION("SoC AK4641 driver");
 643 MODULE_AUTHOR("Harald Welte <laforge@gnufiish.org>");
 644 MODULE_LICENSE("GPL");