sound/soc/codecs/tfa9879.c

   1 /*
   2  * tfa9879.c  --  driver for NXP Semiconductors TFA9879
   3  *
   4  * Copyright (C) 2014 Axentia Technologies AB
   5  * Author: Peter Rosin <peda@axentia.se>
   6  *
   7  *  This program is free software; you can redistribute  it and/or modify it
   8  *  under  the terms of  the GNU General  Public License as published by the
   9  *  Free Software Foundation;  either version 2 of the  License, or (at your
  10  *  option) any later version.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/init.h>
  16 #include <linux/i2c.h>
  17 #include <linux/regmap.h>
  18 #include <sound/soc.h>
  19 #include <sound/tlv.h>
  20 #include <sound/pcm_params.h>
  21
  22 #include "tfa9879.h"
  23
  24 struct tfa9879_priv {
  25         struct regmap *regmap;
  26         int lsb_justified;
  27 };
  28
  29 static int tfa9879_hw_params(struct snd_pcm_substream *substream,
  30                              struct snd_pcm_hw_params *params,
  31                              struct snd_soc_dai *dai)
  32 {
  33         struct snd_soc_codec *codec = dai->codec;
  34         struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
  35         int fs;
  36         int i2s_set = 0;
  37
  38         switch (params_rate(params)) {
  39         case 8000:
  40                 fs = TFA9879_I2S_FS_8000;
  41                 break;
  42         case 11025:
  43                 fs = TFA9879_I2S_FS_11025;
  44                 break;
  45         case 12000:
  46                 fs = TFA9879_I2S_FS_12000;
  47                 break;
  48         case 16000:
  49                 fs = TFA9879_I2S_FS_16000;
  50                 break;
  51         case 22050:
  52                 fs = TFA9879_I2S_FS_22050;
  53                 break;
  54         case 24000:
  55                 fs = TFA9879_I2S_FS_24000;
  56                 break;
  57         case 32000:
  58                 fs = TFA9879_I2S_FS_32000;
  59                 break;
  60         case 44100:
  61                 fs = TFA9879_I2S_FS_44100;
  62                 break;
  63         case 48000:
  64                 fs = TFA9879_I2S_FS_48000;
  65                 break;
  66         case 64000:
  67                 fs = TFA9879_I2S_FS_64000;
  68                 break;
  69         case 88200:
  70                 fs = TFA9879_I2S_FS_88200;
  71                 break;
  72         case 96000:
  73                 fs = TFA9879_I2S_FS_96000;
  74                 break;
  75         default:
  76                 return -EINVAL;
  77         }
  78
  79         switch (params_width(params)) {
  80         case 16:
  81                 i2s_set = TFA9879_I2S_SET_LSB_J_16;
  82                 break;
  83         case 24:
  84                 i2s_set = TFA9879_I2S_SET_LSB_J_24;
  85                 break;
  86         default:
  87                 return -EINVAL;
  88         }
  89
  90         if (tfa9879->lsb_justified)
  91                 snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
  92                                     TFA9879_I2S_SET_MASK,
  93                                     i2s_set << TFA9879_I2S_SET_SHIFT);
  94
  95         snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
  96                             TFA9879_I2S_FS_MASK,
  97                             fs << TFA9879_I2S_FS_SHIFT);
  98         return 0;
  99 }
 100
 101 static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
 102 {
 103         struct snd_soc_codec *codec = dai->codec;
 104
 105         snd_soc_update_bits(codec, TFA9879_MISC_CONTROL,
 106                             TFA9879_S_MUTE_MASK,
 107                             !!mute << TFA9879_S_MUTE_SHIFT);
 108
 109         return 0;
 110 }
 111
 112 static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 113 {
 114         struct snd_soc_codec *codec = dai->codec;
 115         struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec);
 116         int i2s_set;
 117         int sck_pol;
 118
 119         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 120         case SND_SOC_DAIFMT_CBS_CFS:
 121                 break;
 122         default:
 123                 return -EINVAL;
 124         }
 125
 126         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 127         case SND_SOC_DAIFMT_NB_NF:
 128                 sck_pol = TFA9879_SCK_POL_NORMAL;
 129                 break;
 130         case SND_SOC_DAIFMT_IB_NF:
 131                 sck_pol = TFA9879_SCK_POL_INVERSE;
 132                 break;
 133         default:
 134                 return -EINVAL;
 135         }
 136
 137         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 138         case SND_SOC_DAIFMT_I2S:
 139                 tfa9879->lsb_justified = 0;
 140                 i2s_set = TFA9879_I2S_SET_I2S_24;
 141                 break;
 142         case SND_SOC_DAIFMT_LEFT_J:
 143                 tfa9879->lsb_justified = 0;
 144                 i2s_set = TFA9879_I2S_SET_MSB_J_24;
 145                 break;
 146         case SND_SOC_DAIFMT_RIGHT_J:
 147                 tfa9879->lsb_justified = 1;
 148                 i2s_set = TFA9879_I2S_SET_LSB_J_24;
 149                 break;
 150         default:
 151                 return -EINVAL;
 152         }
 153
 154         snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
 155                             TFA9879_SCK_POL_MASK,
 156                             sck_pol << TFA9879_SCK_POL_SHIFT);
 157         snd_soc_update_bits(codec, TFA9879_SERIAL_INTERFACE_1,
 158                             TFA9879_I2S_SET_MASK,
 159                             i2s_set << TFA9879_I2S_SET_SHIFT);
 160         return 0;
 161 }
 162
 163 static const struct reg_default tfa9879_regs[] = {
 164         { TFA9879_DEVICE_CONTROL,       0x0000 }, /* 0x00 */
 165         { TFA9879_SERIAL_INTERFACE_1,   0x0a18 }, /* 0x01 */
 166         { TFA9879_PCM_IOM2_FORMAT_1,    0x0007 }, /* 0x02 */
 167         { TFA9879_SERIAL_INTERFACE_2,   0x0a18 }, /* 0x03 */
 168         { TFA9879_PCM_IOM2_FORMAT_2,    0x0007 }, /* 0x04 */
 169         { TFA9879_EQUALIZER_A1,         0x59dd }, /* 0x05 */
 170         { TFA9879_EQUALIZER_A2,         0xc63e }, /* 0x06 */
 171         { TFA9879_EQUALIZER_B1,         0x651a }, /* 0x07 */
 172         { TFA9879_EQUALIZER_B2,         0xe53e }, /* 0x08 */
 173         { TFA9879_EQUALIZER_C1,         0x4616 }, /* 0x09 */
 174         { TFA9879_EQUALIZER_C2,         0xd33e }, /* 0x0a */
 175         { TFA9879_EQUALIZER_D1,         0x4df3 }, /* 0x0b */
 176         { TFA9879_EQUALIZER_D2,         0xea3e }, /* 0x0c */
 177         { TFA9879_EQUALIZER_E1,         0x5ee0 }, /* 0x0d */
 178         { TFA9879_EQUALIZER_E2,         0xf93e }, /* 0x0e */
 179         { TFA9879_BYPASS_CONTROL,       0x0093 }, /* 0x0f */
 180         { TFA9879_DYNAMIC_RANGE_COMPR,  0x92ba }, /* 0x10 */
 181         { TFA9879_BASS_TREBLE,          0x12a5 }, /* 0x11 */
 182         { TFA9879_HIGH_PASS_FILTER,     0x0004 }, /* 0x12 */
 183         { TFA9879_VOLUME_CONTROL,       0x10bd }, /* 0x13 */
 184         { TFA9879_MISC_CONTROL,         0x0000 }, /* 0x14 */
 185 };
 186
 187 static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
 188 {
 189         return reg == TFA9879_MISC_STATUS;
 190 }
 191
 192 static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
 193 static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
 194 static const char * const tb_freq_text[] = {
 195         "Low", "Mid", "High"
 196 };
 197 static const struct soc_enum treble_freq_enum =
 198         SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
 199                         ARRAY_SIZE(tb_freq_text), tb_freq_text);
 200 static const struct soc_enum bass_freq_enum =
 201         SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
 202                         ARRAY_SIZE(tb_freq_text), tb_freq_text);
 203
 204 static const struct snd_kcontrol_new tfa9879_controls[] = {
 205         SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
 206                        TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
 207         SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
 208                        TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
 209         SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
 210                        TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
 211         SOC_ENUM("Treble Corner Freq", treble_freq_enum),
 212         SOC_ENUM("Bass Corner Freq", bass_freq_enum),
 213 };
 214
 215 static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
 216 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
 217 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
 218 SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
 219 SND_SOC_DAPM_OUTPUT("LINEOUT"),
 220 SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
 221                     NULL, 0),
 222 };
 223
 224 static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
 225         { "DAC", NULL, "AIFINL" },
 226         { "DAC", NULL, "AIFINR" },
 227
 228         { "LINEOUT", NULL, "DAC" },
 229
 230         { "DAC", NULL, "POWER" },
 231 };
 232
 233 static const struct snd_soc_codec_driver tfa9879_codec = {
 234         .component_driver = {
 235                 .controls               = tfa9879_controls,
 236                 .num_controls           = ARRAY_SIZE(tfa9879_controls),
 237                 .dapm_widgets           = tfa9879_dapm_widgets,
 238                 .num_dapm_widgets       = ARRAY_SIZE(tfa9879_dapm_widgets),
 239                 .dapm_routes            = tfa9879_dapm_routes,
 240                 .num_dapm_routes        = ARRAY_SIZE(tfa9879_dapm_routes),
 241         },
 242 };
 243
 244 static const struct regmap_config tfa9879_regmap = {
 245         .reg_bits = 8,
 246         .val_bits = 16,
 247
 248         .volatile_reg = tfa9879_volatile_reg,
 249         .max_register = TFA9879_MISC_STATUS,
 250         .reg_defaults = tfa9879_regs,
 251         .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
 252         .cache_type = REGCACHE_RBTREE,
 253 };
 254
 255 static const struct snd_soc_dai_ops tfa9879_dai_ops = {
 256         .hw_params = tfa9879_hw_params,
 257         .digital_mute = tfa9879_digital_mute,
 258         .set_fmt = tfa9879_set_fmt,
 259 };
 260
 261 #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
 262
 263 #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
 264                          SNDRV_PCM_FMTBIT_S24_LE)
 265
 266 static struct snd_soc_dai_driver tfa9879_dai = {
 267         .name = "tfa9879-hifi",
 268         .playback = {
 269                 .stream_name = "Playback",
 270                 .channels_min = 2,
 271                 .channels_max = 2,
 272                 .rates = TFA9879_RATES,
 273                 .formats = TFA9879_FORMATS, },
 274         .ops = &tfa9879_dai_ops,
 275 };
 276
 277 static int tfa9879_i2c_probe(struct i2c_client *i2c,
 278                              const struct i2c_device_id *id)
 279 {
 280         struct tfa9879_priv *tfa9879;
 281         int i;
 282
 283         tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
 284         if (!tfa9879)
 285                 return -ENOMEM;
 286
 287         i2c_set_clientdata(i2c, tfa9879);
 288
 289         tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
 290         if (IS_ERR(tfa9879->regmap))
 291                 return PTR_ERR(tfa9879->regmap);
 292
 293         /* Ensure the device is in reset state */
 294         for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
 295                 regmap_write(tfa9879->regmap,
 296                              tfa9879_regs[i].reg, tfa9879_regs[i].def);
 297
 298         return snd_soc_register_codec(&i2c->dev, &tfa9879_codec,
 299                                       &tfa9879_dai, 1);
 300 }
 301
 302 static int tfa9879_i2c_remove(struct i2c_client *client)
 303 {
 304         snd_soc_unregister_codec(&client->dev);
 305
 306         return 0;
 307 }
 308
 309 static const struct i2c_device_id tfa9879_i2c_id[] = {
 310         { "tfa9879", 0 },
 311         { }
 312 };
 313 MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
 314
 315 static struct i2c_driver tfa9879_i2c_driver = {
 316         .driver = {
 317                 .name = "tfa9879",
 318         },
 319         .probe = tfa9879_i2c_probe,
 320         .remove = tfa9879_i2c_remove,
 321         .id_table = tfa9879_i2c_id,
 322 };
 323
 324 module_i2c_driver(tfa9879_i2c_driver);
 325
 326 MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
 327 MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
 328 MODULE_LICENSE("GPL");