sound/soc/codecs/tfa9879.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // tfa9879.c  --  driver for NXP Semiconductors TFA9879
   4 //
   5 // Copyright (C) 2014 Axentia Technologies AB
   6 // Author: Peter Rosin <peda@axentia.se>
   7
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/i2c.h>
  11 #include <linux/regmap.h>
  12 #include <sound/soc.h>
  13 #include <sound/tlv.h>
  14 #include <sound/pcm_params.h>
  15
  16 #include "tfa9879.h"
  17
  18 struct tfa9879_priv {
  19         struct regmap *regmap;
  20         int lsb_justified;
  21 };
  22
  23 static int tfa9879_hw_params(struct snd_pcm_substream *substream,
  24                              struct snd_pcm_hw_params *params,
  25                              struct snd_soc_dai *dai)
  26 {
  27         struct snd_soc_component *component = dai->component;
  28         struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
  29         int fs;
  30         int i2s_set = 0;
  31
  32         switch (params_rate(params)) {
  33         case 8000:
  34                 fs = TFA9879_I2S_FS_8000;
  35                 break;
  36         case 11025:
  37                 fs = TFA9879_I2S_FS_11025;
  38                 break;
  39         case 12000:
  40                 fs = TFA9879_I2S_FS_12000;
  41                 break;
  42         case 16000:
  43                 fs = TFA9879_I2S_FS_16000;
  44                 break;
  45         case 22050:
  46                 fs = TFA9879_I2S_FS_22050;
  47                 break;
  48         case 24000:
  49                 fs = TFA9879_I2S_FS_24000;
  50                 break;
  51         case 32000:
  52                 fs = TFA9879_I2S_FS_32000;
  53                 break;
  54         case 44100:
  55                 fs = TFA9879_I2S_FS_44100;
  56                 break;
  57         case 48000:
  58                 fs = TFA9879_I2S_FS_48000;
  59                 break;
  60         case 64000:
  61                 fs = TFA9879_I2S_FS_64000;
  62                 break;
  63         case 88200:
  64                 fs = TFA9879_I2S_FS_88200;
  65                 break;
  66         case 96000:
  67                 fs = TFA9879_I2S_FS_96000;
  68                 break;
  69         default:
  70                 return -EINVAL;
  71         }
  72
  73         switch (params_width(params)) {
  74         case 16:
  75                 i2s_set = TFA9879_I2S_SET_LSB_J_16;
  76                 break;
  77         case 24:
  78                 i2s_set = TFA9879_I2S_SET_LSB_J_24;
  79                 break;
  80         default:
  81                 return -EINVAL;
  82         }
  83
  84         if (tfa9879->lsb_justified)
  85                 snd_soc_component_update_bits(component,
  86                                               TFA9879_SERIAL_INTERFACE_1,
  87                                               TFA9879_I2S_SET_MASK,
  88                                               i2s_set << TFA9879_I2S_SET_SHIFT);
  89
  90         snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
  91                                       TFA9879_I2S_FS_MASK,
  92                                       fs << TFA9879_I2S_FS_SHIFT);
  93         return 0;
  94 }
  95
  96 static int tfa9879_digital_mute(struct snd_soc_dai *dai, int mute)
  97 {
  98         struct snd_soc_component *component = dai->component;
  99
 100         snd_soc_component_update_bits(component, TFA9879_MISC_CONTROL,
 101                                       TFA9879_S_MUTE_MASK,
 102                                       !!mute << TFA9879_S_MUTE_SHIFT);
 103
 104         return 0;
 105 }
 106
 107 static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 108 {
 109         struct snd_soc_component *component = dai->component;
 110         struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
 111         int i2s_set;
 112         int sck_pol;
 113
 114         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 115         case SND_SOC_DAIFMT_CBS_CFS:
 116                 break;
 117         default:
 118                 return -EINVAL;
 119         }
 120
 121         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 122         case SND_SOC_DAIFMT_NB_NF:
 123                 sck_pol = TFA9879_SCK_POL_NORMAL;
 124                 break;
 125         case SND_SOC_DAIFMT_IB_NF:
 126                 sck_pol = TFA9879_SCK_POL_INVERSE;
 127                 break;
 128         default:
 129                 return -EINVAL;
 130         }
 131
 132         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 133         case SND_SOC_DAIFMT_I2S:
 134                 tfa9879->lsb_justified = 0;
 135                 i2s_set = TFA9879_I2S_SET_I2S_24;
 136                 break;
 137         case SND_SOC_DAIFMT_LEFT_J:
 138                 tfa9879->lsb_justified = 0;
 139                 i2s_set = TFA9879_I2S_SET_MSB_J_24;
 140                 break;
 141         case SND_SOC_DAIFMT_RIGHT_J:
 142                 tfa9879->lsb_justified = 1;
 143                 i2s_set = TFA9879_I2S_SET_LSB_J_24;
 144                 break;
 145         default:
 146                 return -EINVAL;
 147         }
 148
 149         snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
 150                                       TFA9879_SCK_POL_MASK,
 151                                       sck_pol << TFA9879_SCK_POL_SHIFT);
 152         snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
 153                                       TFA9879_I2S_SET_MASK,
 154                                       i2s_set << TFA9879_I2S_SET_SHIFT);
 155         return 0;
 156 }
 157
 158 static const struct reg_default tfa9879_regs[] = {
 159         { TFA9879_DEVICE_CONTROL,       0x0000 }, /* 0x00 */
 160         { TFA9879_SERIAL_INTERFACE_1,   0x0a18 }, /* 0x01 */
 161         { TFA9879_PCM_IOM2_FORMAT_1,    0x0007 }, /* 0x02 */
 162         { TFA9879_SERIAL_INTERFACE_2,   0x0a18 }, /* 0x03 */
 163         { TFA9879_PCM_IOM2_FORMAT_2,    0x0007 }, /* 0x04 */
 164         { TFA9879_EQUALIZER_A1,         0x59dd }, /* 0x05 */
 165         { TFA9879_EQUALIZER_A2,         0xc63e }, /* 0x06 */
 166         { TFA9879_EQUALIZER_B1,         0x651a }, /* 0x07 */
 167         { TFA9879_EQUALIZER_B2,         0xe53e }, /* 0x08 */
 168         { TFA9879_EQUALIZER_C1,         0x4616 }, /* 0x09 */
 169         { TFA9879_EQUALIZER_C2,         0xd33e }, /* 0x0a */
 170         { TFA9879_EQUALIZER_D1,         0x4df3 }, /* 0x0b */
 171         { TFA9879_EQUALIZER_D2,         0xea3e }, /* 0x0c */
 172         { TFA9879_EQUALIZER_E1,         0x5ee0 }, /* 0x0d */
 173         { TFA9879_EQUALIZER_E2,         0xf93e }, /* 0x0e */
 174         { TFA9879_BYPASS_CONTROL,       0x0093 }, /* 0x0f */
 175         { TFA9879_DYNAMIC_RANGE_COMPR,  0x92ba }, /* 0x10 */
 176         { TFA9879_BASS_TREBLE,          0x12a5 }, /* 0x11 */
 177         { TFA9879_HIGH_PASS_FILTER,     0x0004 }, /* 0x12 */
 178         { TFA9879_VOLUME_CONTROL,       0x10bd }, /* 0x13 */
 179         { TFA9879_MISC_CONTROL,         0x0000 }, /* 0x14 */
 180 };
 181
 182 static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
 183 {
 184         return reg == TFA9879_MISC_STATUS;
 185 }
 186
 187 static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
 188 static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
 189 static const char * const tb_freq_text[] = {
 190         "Low", "Mid", "High"
 191 };
 192 static const struct soc_enum treble_freq_enum =
 193         SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
 194                         ARRAY_SIZE(tb_freq_text), tb_freq_text);
 195 static const struct soc_enum bass_freq_enum =
 196         SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
 197                         ARRAY_SIZE(tb_freq_text), tb_freq_text);
 198
 199 static const struct snd_kcontrol_new tfa9879_controls[] = {
 200         SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
 201                        TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
 202         SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
 203                        TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
 204         SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
 205                        TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
 206         SOC_ENUM("Treble Corner Freq", treble_freq_enum),
 207         SOC_ENUM("Bass Corner Freq", bass_freq_enum),
 208 };
 209
 210 static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
 211 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
 212 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
 213 SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
 214 SND_SOC_DAPM_OUTPUT("LINEOUT"),
 215 SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
 216                     NULL, 0),
 217 };
 218
 219 static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
 220         { "DAC", NULL, "AIFINL" },
 221         { "DAC", NULL, "AIFINR" },
 222
 223         { "LINEOUT", NULL, "DAC" },
 224
 225         { "DAC", NULL, "POWER" },
 226 };
 227
 228 static const struct snd_soc_component_driver tfa9879_component = {
 229         .controls               = tfa9879_controls,
 230         .num_controls           = ARRAY_SIZE(tfa9879_controls),
 231         .dapm_widgets           = tfa9879_dapm_widgets,
 232         .num_dapm_widgets       = ARRAY_SIZE(tfa9879_dapm_widgets),
 233         .dapm_routes            = tfa9879_dapm_routes,
 234         .num_dapm_routes        = ARRAY_SIZE(tfa9879_dapm_routes),
 235         .idle_bias_on           = 1,
 236         .use_pmdown_time        = 1,
 237         .endianness             = 1,
 238         .non_legacy_dai_naming  = 1,
 239 };
 240
 241 static const struct regmap_config tfa9879_regmap = {
 242         .reg_bits = 8,
 243         .val_bits = 16,
 244
 245         .volatile_reg = tfa9879_volatile_reg,
 246         .max_register = TFA9879_MISC_STATUS,
 247         .reg_defaults = tfa9879_regs,
 248         .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
 249         .cache_type = REGCACHE_RBTREE,
 250 };
 251
 252 static const struct snd_soc_dai_ops tfa9879_dai_ops = {
 253         .hw_params = tfa9879_hw_params,
 254         .digital_mute = tfa9879_digital_mute,
 255         .set_fmt = tfa9879_set_fmt,
 256 };
 257
 258 #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
 259
 260 #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
 261                          SNDRV_PCM_FMTBIT_S24_LE)
 262
 263 static struct snd_soc_dai_driver tfa9879_dai = {
 264         .name = "tfa9879-hifi",
 265         .playback = {
 266                 .stream_name = "Playback",
 267                 .channels_min = 2,
 268                 .channels_max = 2,
 269                 .rates = TFA9879_RATES,
 270                 .formats = TFA9879_FORMATS, },
 271         .ops = &tfa9879_dai_ops,
 272 };
 273
 274 static int tfa9879_i2c_probe(struct i2c_client *i2c)
 275 {
 276         struct tfa9879_priv *tfa9879;
 277         int i;
 278
 279         tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
 280         if (!tfa9879)
 281                 return -ENOMEM;
 282
 283         i2c_set_clientdata(i2c, tfa9879);
 284
 285         tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
 286         if (IS_ERR(tfa9879->regmap))
 287                 return PTR_ERR(tfa9879->regmap);
 288
 289         /* Ensure the device is in reset state */
 290         for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
 291                 regmap_write(tfa9879->regmap,
 292                              tfa9879_regs[i].reg, tfa9879_regs[i].def);
 293
 294         return devm_snd_soc_register_component(&i2c->dev, &tfa9879_component,
 295                                                &tfa9879_dai, 1);
 296 }
 297
 298 static const struct i2c_device_id tfa9879_i2c_id[] = {
 299         { "tfa9879", 0 },
 300         { }
 301 };
 302 MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
 303
 304 static const struct of_device_id tfa9879_of_match[] = {
 305         { .compatible = "nxp,tfa9879", },
 306         { }
 307 };
 308 MODULE_DEVICE_TABLE(of, tfa9879_of_match);
 309
 310 static struct i2c_driver tfa9879_i2c_driver = {
 311         .driver = {
 312                 .name = "tfa9879",
 313                 .of_match_table = tfa9879_of_match,
 314         },
 315         .probe_new = tfa9879_i2c_probe,
 316         .id_table = tfa9879_i2c_id,
 317 };
 318
 319 module_i2c_driver(tfa9879_i2c_driver);
 320
 321 MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
 322 MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
 323 MODULE_LICENSE("GPL");