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/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
  28 #include "ak4535.h"
  29
  30 #define AK4535_VERSION "0.3"
  31
  32 /* codec private data */
  33 struct ak4535_priv {
  34         unsigned int sysclk;
  35         enum snd_soc_control_type control_type;
  36 };
  37
  38 /*
  39  * ak4535 register cache
  40  */
  41 static const u8 ak4535_reg[AK4535_CACHEREGNUM] = {
  42         0x00, 0x80, 0x00, 0x03,
  43         0x02, 0x00, 0x11, 0x01,
  44         0x00, 0x40, 0x36, 0x10,
  45         0x00, 0x00, 0x57, 0x00,
  46 };
  47
  48 static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
  49 static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
  50 static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
  51 static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
  52 static const char *ak4535_mic_select[] = {"Internal", "External"};
  53
  54 static const struct soc_enum ak4535_enum[] = {
  55         SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
  56         SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
  57         SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
  58         SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
  59         SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
  60 };
  61
  62 static const struct snd_kcontrol_new ak4535_snd_controls[] = {
  63         SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
  64         SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
  65         SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
  66         SOC_ENUM("Headphone Output", ak4535_enum[2]),
  67         SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
  68         SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
  69         SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
  70         SOC_ENUM("Mic Select", ak4535_enum[4]),
  71         SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
  72         SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
  73         SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
  74         SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
  75         SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
  76         SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
  77         SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
  78         SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
  79         SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
  80         SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
  81         SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
  82 };
  83
  84 /* Mono 1 Mixer */
  85 static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
  86         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
  87         SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
  88 };
  89
  90 /* Stereo Mixer */
  91 static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
  92         SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
  93         SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
  94         SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
  95 };
  96
  97 /* Input Mixer */
  98 static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
  99         SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
 100         SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
 101 };
 102
 103 /* Input mux */
 104 static const struct snd_kcontrol_new ak4535_input_mux_control =
 105         SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
 106
 107 /* HP L switch */
 108 static const struct snd_kcontrol_new ak4535_hpl_control =
 109         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
 110
 111 /* HP R switch */
 112 static const struct snd_kcontrol_new ak4535_hpr_control =
 113         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
 114
 115 /* mono 2 switch */
 116 static const struct snd_kcontrol_new ak4535_mono2_control =
 117         SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
 118
 119 /* Line out switch */
 120 static const struct snd_kcontrol_new ak4535_line_control =
 121         SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
 122
 123 /* ak4535 dapm widgets */
 124 static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
 125         SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
 126                 &ak4535_stereo_mixer_controls[0],
 127                 ARRAY_SIZE(ak4535_stereo_mixer_controls)),
 128         SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
 129                 &ak4535_mono1_mixer_controls[0],
 130                 ARRAY_SIZE(ak4535_mono1_mixer_controls)),
 131         SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
 132                 &ak4535_input_mixer_controls[0],
 133                 ARRAY_SIZE(ak4535_input_mixer_controls)),
 134         SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
 135                 &ak4535_input_mux_control),
 136         SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
 137         SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
 138                 &ak4535_mono2_control),
 139         /* speaker powersave bit */
 140         SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
 141         SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
 142                 &ak4535_line_control),
 143         SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
 144                 &ak4535_hpl_control),
 145         SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
 146                 &ak4535_hpr_control),
 147         SND_SOC_DAPM_OUTPUT("LOUT"),
 148         SND_SOC_DAPM_OUTPUT("HPL"),
 149         SND_SOC_DAPM_OUTPUT("ROUT"),
 150         SND_SOC_DAPM_OUTPUT("HPR"),
 151         SND_SOC_DAPM_OUTPUT("SPP"),
 152         SND_SOC_DAPM_OUTPUT("SPN"),
 153         SND_SOC_DAPM_OUTPUT("MOUT1"),
 154         SND_SOC_DAPM_OUTPUT("MOUT2"),
 155         SND_SOC_DAPM_OUTPUT("MICOUT"),
 156         SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
 157         SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
 158         SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
 159         SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
 160         SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
 161         SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
 162         SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
 163         SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
 164
 165         SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
 166         SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
 167         SND_SOC_DAPM_INPUT("MICIN"),
 168         SND_SOC_DAPM_INPUT("MICEXT"),
 169         SND_SOC_DAPM_INPUT("AUX"),
 170         SND_SOC_DAPM_INPUT("MIN"),
 171         SND_SOC_DAPM_INPUT("AIN"),
 172 };
 173
 174 static const struct snd_soc_dapm_route ak4535_audio_map[] = {
 175         /*stereo mixer */
 176         {"Stereo Mixer", "Playback Switch", "DAC"},
 177         {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
 178         {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
 179
 180         /* mono1 mixer */
 181         {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
 182         {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
 183
 184         /* Mic */
 185         {"Mic", NULL, "AIN"},
 186         {"Input Mux", "Internal", "Mic Int Bias"},
 187         {"Input Mux", "External", "Mic Ext Bias"},
 188         {"Mic Int Bias", NULL, "MICIN"},
 189         {"Mic Ext Bias", NULL, "MICEXT"},
 190         {"MICOUT", NULL, "Input Mux"},
 191
 192         /* line out */
 193         {"LOUT", NULL, "Line Out Enable"},
 194         {"ROUT", NULL, "Line Out Enable"},
 195         {"Line Out Enable", "Switch", "Line Out"},
 196         {"Line Out", NULL, "Stereo Mixer"},
 197
 198         /* mono1 out */
 199         {"MOUT1", NULL, "Mono Out"},
 200         {"Mono Out", NULL, "Mono1 Mixer"},
 201
 202         /* left HP */
 203         {"HPL", NULL, "Left HP Enable"},
 204         {"Left HP Enable", "Switch", "HP L Amp"},
 205         {"HP L Amp", NULL, "Stereo Mixer"},
 206
 207         /* right HP */
 208         {"HPR", NULL, "Right HP Enable"},
 209         {"Right HP Enable", "Switch", "HP R Amp"},
 210         {"HP R Amp", NULL, "Stereo Mixer"},
 211
 212         /* speaker */
 213         {"SPP", NULL, "Speaker Enable"},
 214         {"SPN", NULL, "Speaker Enable"},
 215         {"Speaker Enable", "Switch", "Spk Amp"},
 216         {"Spk Amp", NULL, "MIN"},
 217
 218         /* mono 2 */
 219         {"MOUT2", NULL, "Mono 2 Enable"},
 220         {"Mono 2 Enable", "Switch", "Stereo Mixer"},
 221
 222         /* Aux In */
 223         {"Aux In", NULL, "AUX"},
 224
 225         /* ADC */
 226         {"ADC", NULL, "Input Mixer"},
 227         {"Input Mixer", "Mic Capture Switch", "Mic"},
 228         {"Input Mixer", "Aux Capture Switch", "Aux In"},
 229 };
 230
 231 static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 232         int clk_id, unsigned int freq, int dir)
 233 {
 234         struct snd_soc_codec *codec = codec_dai->codec;
 235         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 236
 237         ak4535->sysclk = freq;
 238         return 0;
 239 }
 240
 241 static int ak4535_hw_params(struct snd_pcm_substream *substream,
 242                             struct snd_pcm_hw_params *params,
 243                             struct snd_soc_dai *dai)
 244 {
 245         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 246         struct snd_soc_codec *codec = rtd->codec;
 247         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 248         u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
 249         int rate = params_rate(params), fs = 256;
 250
 251         if (rate)
 252                 fs = ak4535->sysclk / rate;
 253
 254         /* set fs */
 255         switch (fs) {
 256         case 1024:
 257                 mode2 |= (0x2 << 5);
 258                 break;
 259         case 512:
 260                 mode2 |= (0x1 << 5);
 261                 break;
 262         case 256:
 263                 break;
 264         }
 265
 266         /* set rate */
 267         snd_soc_write(codec, AK4535_MODE2, mode2);
 268         return 0;
 269 }
 270
 271 static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
 272                 unsigned int fmt)
 273 {
 274         struct snd_soc_codec *codec = codec_dai->codec;
 275         u8 mode1 = 0;
 276
 277         /* interface format */
 278         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 279         case SND_SOC_DAIFMT_I2S:
 280                 mode1 = 0x0002;
 281                 break;
 282         case SND_SOC_DAIFMT_LEFT_J:
 283                 mode1 = 0x0001;
 284                 break;
 285         default:
 286                 return -EINVAL;
 287         }
 288
 289         /* use 32 fs for BCLK to save power */
 290         mode1 |= 0x4;
 291
 292         snd_soc_write(codec, AK4535_MODE1, mode1);
 293         return 0;
 294 }
 295
 296 static int ak4535_mute(struct snd_soc_dai *dai, int mute)
 297 {
 298         struct snd_soc_codec *codec = dai->codec;
 299         u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
 300         if (!mute)
 301                 snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
 302         else
 303                 snd_soc_write(codec, AK4535_DAC, mute_reg | 0x20);
 304         return 0;
 305 }
 306
 307 static int ak4535_set_bias_level(struct snd_soc_codec *codec,
 308         enum snd_soc_bias_level level)
 309 {
 310         switch (level) {
 311         case SND_SOC_BIAS_ON:
 312                 snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
 313                 break;
 314         case SND_SOC_BIAS_PREPARE:
 315                 snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
 316                 break;
 317         case SND_SOC_BIAS_STANDBY:
 318                 snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
 319                 snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
 320                 break;
 321         case SND_SOC_BIAS_OFF:
 322                 snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
 323                 break;
 324         }
 325         codec->dapm.bias_level = level;
 326         return 0;
 327 }
 328
 329 #define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
 330                 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
 331                 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
 332
 333 static const struct snd_soc_dai_ops ak4535_dai_ops = {
 334         .hw_params      = ak4535_hw_params,
 335         .set_fmt        = ak4535_set_dai_fmt,
 336         .digital_mute   = ak4535_mute,
 337         .set_sysclk     = ak4535_set_dai_sysclk,
 338 };
 339
 340 static struct snd_soc_dai_driver ak4535_dai = {
 341         .name = "ak4535-hifi",
 342         .playback = {
 343                 .stream_name = "Playback",
 344                 .channels_min = 1,
 345                 .channels_max = 2,
 346                 .rates = AK4535_RATES,
 347                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 348         .capture = {
 349                 .stream_name = "Capture",
 350                 .channels_min = 1,
 351                 .channels_max = 2,
 352                 .rates = AK4535_RATES,
 353                 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
 354         .ops = &ak4535_dai_ops,
 355 };
 356
 357 static int ak4535_suspend(struct snd_soc_codec *codec)
 358 {
 359         ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
 360         return 0;
 361 }
 362
 363 static int ak4535_resume(struct snd_soc_codec *codec)
 364 {
 365         snd_soc_cache_sync(codec);
 366         ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 367         return 0;
 368 }
 369
 370 static int ak4535_probe(struct snd_soc_codec *codec)
 371 {
 372         struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
 373         int ret;
 374
 375         printk(KERN_INFO "AK4535 Audio Codec %s", AK4535_VERSION);
 376
 377         ret = snd_soc_codec_set_cache_io(codec, 8, 8, ak4535->control_type);
 378         if (ret < 0) {
 379                 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 380                 return ret;
 381         }
 382         /* power on device */
 383         ak4535_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 384
 385         snd_soc_add_controls(codec, ak4535_snd_controls,
 386                                 ARRAY_SIZE(ak4535_snd_controls));
 387         return 0;
 388 }
 389
 390 /* power down chip */
 391 static int ak4535_remove(struct snd_soc_codec *codec)
 392 {
 393         ak4535_set_bias_level(codec, SND_SOC_BIAS_OFF);
 394         return 0;
 395 }
 396
 397 static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
 398         .probe =        ak4535_probe,
 399         .remove =       ak4535_remove,
 400         .suspend =      ak4535_suspend,
 401         .resume =       ak4535_resume,
 402         .set_bias_level = ak4535_set_bias_level,
 403         .reg_cache_size = ARRAY_SIZE(ak4535_reg),
 404         .reg_word_size = sizeof(u8),
 405         .reg_cache_default = ak4535_reg,
 406         .dapm_widgets = ak4535_dapm_widgets,
 407         .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
 408         .dapm_routes = ak4535_audio_map,
 409         .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
 410 };
 411
 412 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 413 static __devinit int ak4535_i2c_probe(struct i2c_client *i2c,
 414                                       const struct i2c_device_id *id)
 415 {
 416         struct ak4535_priv *ak4535;
 417         int ret;
 418
 419         ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
 420                               GFP_KERNEL);
 421         if (ak4535 == NULL)
 422                 return -ENOMEM;
 423
 424         i2c_set_clientdata(i2c, ak4535);
 425         ak4535->control_type = SND_SOC_I2C;
 426
 427         ret = snd_soc_register_codec(&i2c->dev,
 428                         &soc_codec_dev_ak4535, &ak4535_dai, 1);
 429         return ret;
 430 }
 431
 432 static __devexit 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-codec",
 447                 .owner = THIS_MODULE,
 448         },
 449         .probe =    ak4535_i2c_probe,
 450         .remove =   __devexit_p(ak4535_i2c_remove),
 451         .id_table = ak4535_i2c_id,
 452 };
 453 #endif
 454
 455 static int __init ak4535_modinit(void)
 456 {
 457         int ret = 0;
 458 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 459         ret = i2c_add_driver(&ak4535_i2c_driver);
 460         if (ret != 0) {
 461                 printk(KERN_ERR "Failed to register AK4535 I2C driver: %d\n",
 462                        ret);
 463         }
 464 #endif
 465         return ret;
 466 }
 467 module_init(ak4535_modinit);
 468
 469 static void __exit ak4535_exit(void)
 470 {
 471 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 472         i2c_del_driver(&ak4535_i2c_driver);
 473 #endif
 474 }
 475 module_exit(ak4535_exit);
 476
 477 MODULE_DESCRIPTION("Soc AK4535 driver");
 478 MODULE_AUTHOR("Richard Purdie");
 479 MODULE_LICENSE("GPL");