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