sound/soc/codecs/ak4535.c

   1 /*
   2  * ak4535.c  --  AK4535 ALSA Soc Audio driver
   3  *
   4  * Copyright 2005 Openedhand Ltd.
   5  *
   6  * Author: Richard Purdie <richard@openedhand.com>
   7  *
   8  * Based on wm8753.c by Liam Girdwood
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/init.h>
  18 #include <linux/delay.h>
  19 #include <linux/pm.h>
  20 #include <linux/i2c.h>
  21 #include <linux/regmap.h>
  22 #include <linux/slab.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/initval.h>
  28
  29 #include "ak4535.h"
  30
  31 /* codec private data */
  32 struct ak4535_priv {
  33         struct regmap *regmap;
  34         unsigned int sysclk;
  35 };
  36
  37 /*
  38  * ak4535 register cache
  39  */
  40 static const struct reg_default ak4535_reg_defaults[] = {
  41         { 0, 0x00 },
  42         { 1, 0x80 },
  43         { 2, 0x00 },
  44         { 3, 0x03 },
  45         { 4, 0x02 },
  46         { 5, 0x00 },
  47         { 6, 0x11 },
  48         { 7, 0x01 },
  49         { 8, 0x00 },
  50         { 9, 0x40 },
  51         { 10, 0x36 },
  52         { 11, 0x10 },
  53         { 12, 0x00 },
  54         { 13, 0x00 },
  55         { 14, 0x57 },
  56 };
  57
  58 static bool ak4535_volatile(struct device *dev, unsigned int reg)
  59 {
  60         switch (reg) {
  61         case AK4535_STATUS:
  62                 return true;
  63         default:
  64                 return false;
  65         }
  66 }
  67
  68 static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
  69 static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
  70 static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
  71 static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
  72 static const char *ak4535_mic_select[] = {"Internal", "External"};
  73
  74 static const struct soc_enum ak4535_enum[] = {
  75         SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
  76         SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
  77         SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
  78         SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
  79         SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
  80 };
  81
  82 static const struct snd_kcontrol_new ak4535_snd_controls[] = {
  83         SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
  84         SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
  85         SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
  86         SOC_ENUM("Headphone Output", ak4535_enum[2]),
  87         SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
  88         SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
  89         SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
  90         SOC_ENUM("Mic Select", ak4535_enum[4]),
  91         SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
  92         SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
  93         SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
  94         SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
  95         SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
  96         SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
  97         SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
  98         SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
  99         SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
 100         SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
 101         SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
 102 };
 103
 104 /* Mono 1 Mixer */
 105 static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
 106         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
 107         SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
 108 };
 109
 110 /* Stereo Mixer */
 111 static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
 112         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
 113         SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
 114         SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
 115 };
 116
 117 /* Input Mixer */
 118 static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
 119         SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
 120         SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
 121 };
 122
 123 /* Input mux */
 124 static const struct snd_kcontrol_new ak4535_input_mux_control =
 125         SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
 126
 127 /* HP L switch */
 128 static const struct snd_kcontrol_new ak4535_hpl_control =
 129         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
 130
 131 /* HP R switch */
 132 static const struct snd_kcontrol_new ak4535_hpr_control =
 133         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
 134
 135 /* mono 2 switch */
 136 static const struct snd_kcontrol_new ak4535_mono2_control =
 137         SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
 138
 139 /* Line out switch */
 140 static const struct snd_kcontrol_new ak4535_line_control =
 141         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
 142
 143 /* ak4535 dapm widgets */
 144 static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
 145         SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
 146                 &ak4535_stereo_mixer_controls[0],
 147                 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
 148         SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
 149                 &ak4535_mono1_mixer_controls[0],
 150                 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
 151         SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
 152                 &ak4535_input_mixer_controls[0],
 153                 ARRAY_SIZE(ak4535_input_mixer_controls)),
 154         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 155                 &ak4535_input_mux_control),
 156         SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
 157         SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
 158                 &ak4535_mono2_control),
 159         /* speaker powersave bit */
 160         SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
 161         SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
 162                 &ak4535_line_control),
 163         SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
 164                 &ak4535_hpl_control),
 165         SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
 166                 &ak4535_hpr_control),
 167         SND_SOC_DAPM_OUTPUT("LOUT"),
 168         SND_SOC_DAPM_OUTPUT("HPL"),
 169         SND_SOC_DAPM_OUTPUT("ROUT"),
 170         SND_SOC_DAPM_OUTPUT("HPR"),
 171         SND_SOC_DAPM_OUTPUT("SPP"),
 172         SND_SOC_DAPM_OUTPUT("SPN"),
 173         SND_SOC_DAPM_OUTPUT("MOUT1"),
 174         SND_SOC_DAPM_OUTPUT("MOUT2"),
 175         SND_SOC_DAPM_OUTPUT("MICOUT"),
 176         SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
 177         SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
 178         SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
 179         SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
 180         SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
 181         SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
 182         SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
 183         SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
 184
 185         SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
 186         SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
 187         SND_SOC_DAPM_INPUT("MICIN"),
 188         SND_SOC_DAPM_INPUT("MICEXT"),
 189         SND_SOC_DAPM_INPUT("AUX"),
 190         SND_SOC_DAPM_INPUT("MIN"),
 191         SND_SOC_DAPM_INPUT("AIN"),
 192 };
 193
 194 static const struct snd_soc_dapm_route ak4535_audio_map[] = {
 195         /*stereo mixer */
 196         {"Stereo Mixer", "Playback Switch", "DAC"},
 197         {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
 198         {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
 199
 200         /* mono1 mixer */
 201         {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
 202         {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
 203
 204         /* Mic */
 205         {"Mic", NULL, "AIN"},
 206         {"Input Mux", "Internal", "Mic Int Bias"},
 207         {"Input Mux", "External", "Mic Ext Bias"},
 208         {"Mic Int Bias", NULL, "MICIN"},
 209         {"Mic Ext Bias", NULL, "MICEXT"},
 210         {"MICOUT", NULL, "Input Mux"},
 211
 212         /* line out */
 213         {"LOUT", NULL, "Line Out Enable"},
 214         {"ROUT", NULL, "Line Out Enable"},
 215         {"Line Out Enable", "Switch", "Line Out"},
 216         {"Line Out", NULL, "Stereo Mixer"},
 217
 218         /* mono1 out */
 219         {"MOUT1", NULL, "Mono Out"},
 220         {"Mono Out", NULL, "Mono1 Mixer"},
 221
 222         /* left HP */
 223         {"HPL", NULL, "Left HP Enable"},
 224         {"Left HP Enable", "Switch", "HP L Amp"},
 225         {"HP L Amp", NULL, "Stereo Mixer"},
 226
 227         /* right HP */
 228         {"HPR", NULL, "Right HP Enable"},
 229         {"Right HP Enable", "Switch", "HP R Amp"},
 230         {"HP R Amp", NULL, "Stereo Mixer"},
 231
 232         /* speaker */
 233         {"SPP", NULL, "Speaker Enable"},
 234         {"SPN", NULL, "Speaker Enable"},
 235         {"Speaker Enable", "Switch", "Spk Amp"},
 236         {"Spk Amp", NULL, "MIN"},
 237
 238         /* mono 2 */
 239         {"MOUT2", NULL, "Mono 2 Enable"},
 240         {"Mono 2 Enable", "Switch", "Stereo Mixer"},
 241
 242         /* Aux In */
 243         {"Aux In", NULL, "AUX"},
 244
 245         /* ADC */
 246         {"ADC", NULL, "Input Mixer"},
 247         {"Input Mixer", "Mic Capture Switch", "Mic"},
 248         {"Input Mixer", "Aux Capture Switch", "Aux In"},
 249 };
 250
 251 static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 252         int clk_id, unsigned int freq, int dir)
 253 {
 254         struct snd_soc_codec *codec = codec_dai->codec;
 255         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 256
 257         ak4535->sysclk = freq;
 258         return 0;
 259 }
 260
 261 static int ak4535_hw_params(struct snd_pcm_substream *substream,
 262                             struct snd_pcm_hw_params *params,
 263                             struct snd_soc_dai *dai)
 264 {
 265         struct snd_soc_codec *codec = dai->codec;
 266         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 267         u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
 268         int rate = params_rate(params), fs = 256;
 269
 270         if (rate)
 271                 fs = ak4535->sysclk / rate;
 272
 273         /* set fs */
 274         switch (fs) {
 275         case 1024:
 276                 mode2 |= (0x2 << 5);
 277                 break;
 278         case 512:
 279                 mode2 |= (0x1 << 5);
 280                 break;
 281         case 256:
 282                 break;
 283         }
 284
 285         /* set rate */
 286         snd_soc_write(codec, AK4535_MODE2, mode2);
 287         return 0;
 288 }
 289
 290 static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
 291                 unsigned int fmt)
 292 {
 293         struct snd_soc_codec *codec = codec_dai->codec;
 294         u8 mode1 = 0;
 295
 296         /* interface format */
 297         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 298         case SND_SOC_DAIFMT_I2S:
 299                 mode1 = 0x0002;
 300                 break;
 301         case SND_SOC_DAIFMT_LEFT_J:
 302                 mode1 = 0x0001;
 303                 break;
 304         default:
 305                 return -EINVAL;
 306         }
 307
 308         /* use 32 fs for BCLK to save power */
 309         mode1 |= 0x4;
 310
 311         snd_soc_write(codec, AK4535_MODE1, mode1);
 312         return 0;
 313 }
 314
 315 static int ak4535_mute(struct snd_soc_dai *dai, int mute)
 316 {
 317         struct snd_soc_codec *codec = dai->codec;
 318         u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
 319         if (!mute)
 320                 snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
 321         else
 322                 snd_soc_write(codec, AK4535_DAC, mute_reg | 0x20);
 323         return 0;
 324 }
 325
 326 static int ak4535_set_bias_level(struct snd_soc_codec *codec,
 327         enum snd_soc_bias_level level)
 328 {
 329         switch (level) {
 330         case SND_SOC_BIAS_ON:
 331                 snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
 332                 break;
 333         case SND_SOC_BIAS_PREPARE:
 334                 snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
 335                 break;
 336         case SND_SOC_BIAS_STANDBY:
 337                 snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
 338                 snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
 339                 break;
 340         case SND_SOC_BIAS_OFF:
 341                 snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
 342                 break;
 343         }
 344         return 0;
 345 }
 346
 347 #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 348                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 349                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 350
 351 static const struct snd_soc_dai_ops ak4535_dai_ops = {
 352         .hw_params      = ak4535_hw_params,
 353         .set_fmt        = ak4535_set_dai_fmt,
 354         .digital_mute   = ak4535_mute,
 355         .set_sysclk     = ak4535_set_dai_sysclk,
 356 };
 357
 358 static struct snd_soc_dai_driver ak4535_dai = {
 359         .name = "ak4535-hifi",
 360         .playback = {
 361                 .stream_name = "Playback",
 362                 .channels_min = 1,
 363                 .channels_max = 2,
 364                 .rates = AK4535_RATES,
 365                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 366         .capture = {
 367                 .stream_name = "Capture",
 368                 .channels_min = 1,
 369                 .channels_max = 2,
 370                 .rates = AK4535_RATES,
 371                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 372         .ops = &ak4535_dai_ops,
 373 };
 374
 375 static int ak4535_resume(struct snd_soc_codec *codec)
 376 {
 377         snd_soc_cache_sync(codec);
 378         return 0;
 379 }
 380
 381 static const struct regmap_config ak4535_regmap = {
 382         .reg_bits = 8,
 383         .val_bits = 8,
 384
 385         .max_register = AK4535_STATUS,
 386         .volatile_reg = ak4535_volatile,
 387
 388         .cache_type = REGCACHE_RBTREE,
 389         .reg_defaults = ak4535_reg_defaults,
 390         .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
 391 };
 392
 393 static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
 394         .resume =       ak4535_resume,
 395         .set_bias_level = ak4535_set_bias_level,
 396         .suspend_bias_off = true,
 397
 398         .controls = ak4535_snd_controls,
 399         .num_controls = ARRAY_SIZE(ak4535_snd_controls),
 400         .dapm_widgets = ak4535_dapm_widgets,
 401         .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
 402         .dapm_routes = ak4535_audio_map,
 403         .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
 404 };
 405
 406 static int ak4535_i2c_probe(struct i2c_client *i2c,
 407                             const struct i2c_device_id *id)
 408 {
 409         struct ak4535_priv *ak4535;
 410         int ret;
 411
 412         ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
 413                               GFP_KERNEL);
 414         if (ak4535 == NULL)
 415                 return -ENOMEM;
 416
 417         ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
 418         if (IS_ERR(ak4535->regmap)) {
 419                 ret = PTR_ERR(ak4535->regmap);
 420                 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
 421                 return ret;
 422         }
 423
 424         i2c_set_clientdata(i2c, ak4535);
 425
 426         ret = snd_soc_register_codec(&i2c->dev,
 427                         &soc_codec_dev_ak4535, &ak4535_dai, 1);
 428
 429         return ret;
 430 }
 431
 432 static int ak4535_i2c_remove(struct i2c_client *client)
 433 {
 434         snd_soc_unregister_codec(&client->dev);
 435         return 0;
 436 }
 437
 438 static const struct i2c_device_id ak4535_i2c_id[] = {
 439         { "ak4535", 0 },
 440         { }
 441 };
 442 MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
 443
 444 static struct i2c_driver ak4535_i2c_driver = {
 445         .driver = {
 446                 .name = "ak4535",
 447         },
 448         .probe =    ak4535_i2c_probe,
 449         .remove =   ak4535_i2c_remove,
 450         .id_table = ak4535_i2c_id,
 451 };
 452
 453 module_i2c_driver(ak4535_i2c_driver);
 454
 455 MODULE_DESCRIPTION("Soc AK4535 driver");
 456 MODULE_AUTHOR("Richard Purdie");
 457 MODULE_LICENSE("GPL");