soc/codecs/tfa9879.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002 //
0003 // tfa9879.c  --  driver for NXP Semiconductors TFA9879
0004 //
0005 // Copyright (C) 2014 Axentia Technologies AB
0006 // Author: Peter Rosin <peda@axentia.se>
0007
0008 #include <linux/module.h>
0009 #include <linux/init.h>
0010 #include <linux/i2c.h>
0011 #include <linux/regmap.h>
0012 #include <sound/soc.h>
0013 #include <sound/tlv.h>
0014 #include <sound/pcm_params.h>
0015
0016 #include "tfa9879.h"
0017
0018 struct tfa9879_priv {
0019     struct regmap *regmap;
0020     int lsb_justified;
0021 };
0022
0023 static int tfa9879_hw_params(struct snd_pcm_substream *substream,
0024                  struct snd_pcm_hw_params *params,
0025                  struct snd_soc_dai *dai)
0026 {
0027     struct snd_soc_component *component = dai->component;
0028     struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
0029     int fs;
0030     int i2s_set = 0;
0031
0032     switch (params_rate(params)) {
0033     case 8000:
0034         fs = TFA9879_I2S_FS_8000;
0035         break;
0036     case 11025:
0037         fs = TFA9879_I2S_FS_11025;
0038         break;
0039     case 12000:
0040         fs = TFA9879_I2S_FS_12000;
0041         break;
0042     case 16000:
0043         fs = TFA9879_I2S_FS_16000;
0044         break;
0045     case 22050:
0046         fs = TFA9879_I2S_FS_22050;
0047         break;
0048     case 24000:
0049         fs = TFA9879_I2S_FS_24000;
0050         break;
0051     case 32000:
0052         fs = TFA9879_I2S_FS_32000;
0053         break;
0054     case 44100:
0055         fs = TFA9879_I2S_FS_44100;
0056         break;
0057     case 48000:
0058         fs = TFA9879_I2S_FS_48000;
0059         break;
0060     case 64000:
0061         fs = TFA9879_I2S_FS_64000;
0062         break;
0063     case 88200:
0064         fs = TFA9879_I2S_FS_88200;
0065         break;
0066     case 96000:
0067         fs = TFA9879_I2S_FS_96000;
0068         break;
0069     default:
0070         return -EINVAL;
0071     }
0072
0073     switch (params_width(params)) {
0074     case 16:
0075         i2s_set = TFA9879_I2S_SET_LSB_J_16;
0076         break;
0077     case 24:
0078         i2s_set = TFA9879_I2S_SET_LSB_J_24;
0079         break;
0080     default:
0081         return -EINVAL;
0082     }
0083
0084     if (tfa9879->lsb_justified)
0085         snd_soc_component_update_bits(component,
0086                           TFA9879_SERIAL_INTERFACE_1,
0087                           TFA9879_I2S_SET_MASK,
0088                           i2s_set << TFA9879_I2S_SET_SHIFT);
0089
0090     snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
0091                       TFA9879_I2S_FS_MASK,
0092                       fs << TFA9879_I2S_FS_SHIFT);
0093     return 0;
0094 }
0095
0096 static int tfa9879_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
0097 {
0098     struct snd_soc_component *component = dai->component;
0099
0100     snd_soc_component_update_bits(component, TFA9879_MISC_CONTROL,
0101                       TFA9879_S_MUTE_MASK,
0102                       !!mute << TFA9879_S_MUTE_SHIFT);
0103
0104     return 0;
0105 }
0106
0107 static int tfa9879_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
0108 {
0109     struct snd_soc_component *component = dai->component;
0110     struct tfa9879_priv *tfa9879 = snd_soc_component_get_drvdata(component);
0111     int i2s_set;
0112     int sck_pol;
0113
0114     switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
0115     case SND_SOC_DAIFMT_CBC_CFC:
0116         break;
0117     default:
0118         return -EINVAL;
0119     }
0120
0121     switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
0122     case SND_SOC_DAIFMT_NB_NF:
0123         sck_pol = TFA9879_SCK_POL_NORMAL;
0124         break;
0125     case SND_SOC_DAIFMT_IB_NF:
0126         sck_pol = TFA9879_SCK_POL_INVERSE;
0127         break;
0128     default:
0129         return -EINVAL;
0130     }
0131
0132     switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
0133     case SND_SOC_DAIFMT_I2S:
0134         tfa9879->lsb_justified = 0;
0135         i2s_set = TFA9879_I2S_SET_I2S_24;
0136         break;
0137     case SND_SOC_DAIFMT_LEFT_J:
0138         tfa9879->lsb_justified = 0;
0139         i2s_set = TFA9879_I2S_SET_MSB_J_24;
0140         break;
0141     case SND_SOC_DAIFMT_RIGHT_J:
0142         tfa9879->lsb_justified = 1;
0143         i2s_set = TFA9879_I2S_SET_LSB_J_24;
0144         break;
0145     default:
0146         return -EINVAL;
0147     }
0148
0149     snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
0150                       TFA9879_SCK_POL_MASK,
0151                       sck_pol << TFA9879_SCK_POL_SHIFT);
0152     snd_soc_component_update_bits(component, TFA9879_SERIAL_INTERFACE_1,
0153                       TFA9879_I2S_SET_MASK,
0154                       i2s_set << TFA9879_I2S_SET_SHIFT);
0155     return 0;
0156 }
0157
0158 static const struct reg_default tfa9879_regs[] = {
0159     { TFA9879_DEVICE_CONTROL,   0x0000 }, /* 0x00 */
0160     { TFA9879_SERIAL_INTERFACE_1,   0x0a18 }, /* 0x01 */
0161     { TFA9879_PCM_IOM2_FORMAT_1,    0x0007 }, /* 0x02 */
0162     { TFA9879_SERIAL_INTERFACE_2,   0x0a18 }, /* 0x03 */
0163     { TFA9879_PCM_IOM2_FORMAT_2,    0x0007 }, /* 0x04 */
0164     { TFA9879_EQUALIZER_A1,     0x59dd }, /* 0x05 */
0165     { TFA9879_EQUALIZER_A2,     0xc63e }, /* 0x06 */
0166     { TFA9879_EQUALIZER_B1,     0x651a }, /* 0x07 */
0167     { TFA9879_EQUALIZER_B2,     0xe53e }, /* 0x08 */
0168     { TFA9879_EQUALIZER_C1,     0x4616 }, /* 0x09 */
0169     { TFA9879_EQUALIZER_C2,     0xd33e }, /* 0x0a */
0170     { TFA9879_EQUALIZER_D1,     0x4df3 }, /* 0x0b */
0171     { TFA9879_EQUALIZER_D2,     0xea3e }, /* 0x0c */
0172     { TFA9879_EQUALIZER_E1,     0x5ee0 }, /* 0x0d */
0173     { TFA9879_EQUALIZER_E2,     0xf93e }, /* 0x0e */
0174     { TFA9879_BYPASS_CONTROL,   0x0093 }, /* 0x0f */
0175     { TFA9879_DYNAMIC_RANGE_COMPR,  0x92ba }, /* 0x10 */
0176     { TFA9879_BASS_TREBLE,      0x12a5 }, /* 0x11 */
0177     { TFA9879_HIGH_PASS_FILTER, 0x0004 }, /* 0x12 */
0178     { TFA9879_VOLUME_CONTROL,   0x10bd }, /* 0x13 */
0179     { TFA9879_MISC_CONTROL,     0x0000 }, /* 0x14 */
0180 };
0181
0182 static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)
0183 {
0184     return reg == TFA9879_MISC_STATUS;
0185 }
0186
0187 static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);
0188 static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);
0189 static const char * const tb_freq_text[] = {
0190     "Low", "Mid", "High"
0191 };
0192 static const struct soc_enum treble_freq_enum =
0193     SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_TRBLE_SHIFT,
0194             ARRAY_SIZE(tb_freq_text), tb_freq_text);
0195 static const struct soc_enum bass_freq_enum =
0196     SOC_ENUM_SINGLE(TFA9879_BASS_TREBLE, TFA9879_F_BASS_SHIFT,
0197             ARRAY_SIZE(tb_freq_text), tb_freq_text);
0198
0199 static const struct snd_kcontrol_new tfa9879_controls[] = {
0200     SOC_SINGLE_TLV("PCM Playback Volume", TFA9879_VOLUME_CONTROL,
0201                TFA9879_VOL_SHIFT, 0xbd, 1, volume_tlv),
0202     SOC_SINGLE_TLV("Treble Volume", TFA9879_BASS_TREBLE,
0203                TFA9879_G_TRBLE_SHIFT, 18, 0, tb_gain_tlv),
0204     SOC_SINGLE_TLV("Bass Volume", TFA9879_BASS_TREBLE,
0205                TFA9879_G_BASS_SHIFT, 18, 0, tb_gain_tlv),
0206     SOC_ENUM("Treble Corner Freq", treble_freq_enum),
0207     SOC_ENUM("Bass Corner Freq", bass_freq_enum),
0208 };
0209
0210 static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {
0211 SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),
0212 SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),
0213 SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),
0214 SND_SOC_DAPM_OUTPUT("LINEOUT"),
0215 SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,
0216             NULL, 0),
0217 };
0218
0219 static const struct snd_soc_dapm_route tfa9879_dapm_routes[] = {
0220     { "DAC", NULL, "AIFINL" },
0221     { "DAC", NULL, "AIFINR" },
0222
0223     { "LINEOUT", NULL, "DAC" },
0224
0225     { "DAC", NULL, "POWER" },
0226 };
0227
0228 static const struct snd_soc_component_driver tfa9879_component = {
0229     .controls       = tfa9879_controls,
0230     .num_controls       = ARRAY_SIZE(tfa9879_controls),
0231     .dapm_widgets       = tfa9879_dapm_widgets,
0232     .num_dapm_widgets   = ARRAY_SIZE(tfa9879_dapm_widgets),
0233     .dapm_routes        = tfa9879_dapm_routes,
0234     .num_dapm_routes    = ARRAY_SIZE(tfa9879_dapm_routes),
0235     .idle_bias_on       = 1,
0236     .use_pmdown_time    = 1,
0237     .endianness     = 1,
0238 };
0239
0240 static const struct regmap_config tfa9879_regmap = {
0241     .reg_bits = 8,
0242     .val_bits = 16,
0243
0244     .volatile_reg = tfa9879_volatile_reg,
0245     .max_register = TFA9879_MISC_STATUS,
0246     .reg_defaults = tfa9879_regs,
0247     .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),
0248     .cache_type = REGCACHE_RBTREE,
0249 };
0250
0251 static const struct snd_soc_dai_ops tfa9879_dai_ops = {
0252     .hw_params = tfa9879_hw_params,
0253     .mute_stream = tfa9879_mute_stream,
0254     .set_fmt = tfa9879_set_fmt,
0255     .no_capture_mute = 1,
0256 };
0257
0258 #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000
0259
0260 #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
0261              SNDRV_PCM_FMTBIT_S24_LE)
0262
0263 static struct snd_soc_dai_driver tfa9879_dai = {
0264     .name = "tfa9879-hifi",
0265     .playback = {
0266         .stream_name = "Playback",
0267         .channels_min = 2,
0268         .channels_max = 2,
0269         .rates = TFA9879_RATES,
0270         .formats = TFA9879_FORMATS, },
0271     .ops = &tfa9879_dai_ops,
0272 };
0273
0274 static int tfa9879_i2c_probe(struct i2c_client *i2c)
0275 {
0276     struct tfa9879_priv *tfa9879;
0277     int i;
0278
0279     tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL);
0280     if (!tfa9879)
0281         return -ENOMEM;
0282
0283     i2c_set_clientdata(i2c, tfa9879);
0284
0285     tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap);
0286     if (IS_ERR(tfa9879->regmap))
0287         return PTR_ERR(tfa9879->regmap);
0288
0289     /* Ensure the device is in reset state */
0290     for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++)
0291         regmap_write(tfa9879->regmap,
0292                  tfa9879_regs[i].reg, tfa9879_regs[i].def);
0293
0294     return devm_snd_soc_register_component(&i2c->dev, &tfa9879_component,
0295                            &tfa9879_dai, 1);
0296 }
0297
0298 static const struct i2c_device_id tfa9879_i2c_id[] = {
0299     { "tfa9879", 0 },
0300     { }
0301 };
0302 MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
0303
0304 static const struct of_device_id tfa9879_of_match[] = {
0305     { .compatible = "nxp,tfa9879", },
0306     { }
0307 };
0308 MODULE_DEVICE_TABLE(of, tfa9879_of_match);
0309
0310 static struct i2c_driver tfa9879_i2c_driver = {
0311     .driver = {
0312         .name = "tfa9879",
0313         .of_match_table = tfa9879_of_match,
0314     },
0315     .probe_new = tfa9879_i2c_probe,
0316     .id_table = tfa9879_i2c_id,
0317 };
0318
0319 module_i2c_driver(tfa9879_i2c_driver);
0320
0321 MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");
0322 MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");
0323 MODULE_LICENSE("GPL");