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1// SPDX-License-Identifier: GPL-2.0+2//3// tfa9879.c -- driver for NXP Semiconductors TFA98794//5// Copyright (C) 2014 Axentia Technologies AB6// 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 18struct tfa9879_priv {19 struct regmap *regmap;20 int lsb_justified;21};22 23static 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 96static int tfa9879_mute_stream(struct snd_soc_dai *dai, int mute, int direction)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 107static 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_CLOCK_PROVIDER_MASK) {115 case SND_SOC_DAIFMT_CBC_CFC: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 158static 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 182static bool tfa9879_volatile_reg(struct device *dev, unsigned int reg)183{184 return reg == TFA9879_MISC_STATUS;185}186 187static const DECLARE_TLV_DB_SCALE(volume_tlv, -7050, 50, 1);188static const DECLARE_TLV_DB_SCALE(tb_gain_tlv, -1800, 200, 0);189static const char * const tb_freq_text[] = {190 "Low", "Mid", "High"191};192static 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);195static 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 199static 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 210static const struct snd_soc_dapm_widget tfa9879_dapm_widgets[] = {211SND_SOC_DAPM_AIF_IN("AIFINL", "Playback", 0, SND_SOC_NOPM, 0, 0),212SND_SOC_DAPM_AIF_IN("AIFINR", "Playback", 1, SND_SOC_NOPM, 0, 0),213SND_SOC_DAPM_DAC("DAC", NULL, TFA9879_DEVICE_CONTROL, TFA9879_OPMODE_SHIFT, 0),214SND_SOC_DAPM_OUTPUT("LINEOUT"),215SND_SOC_DAPM_SUPPLY("POWER", TFA9879_DEVICE_CONTROL, TFA9879_POWERUP_SHIFT, 0,216 NULL, 0),217};218 219static 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 228static 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};239 240static const struct regmap_config tfa9879_regmap = {241 .reg_bits = 8,242 .val_bits = 16,243 244 .volatile_reg = tfa9879_volatile_reg,245 .max_register = TFA9879_MISC_STATUS,246 .reg_defaults = tfa9879_regs,247 .num_reg_defaults = ARRAY_SIZE(tfa9879_regs),248 .cache_type = REGCACHE_RBTREE,249};250 251static const struct snd_soc_dai_ops tfa9879_dai_ops = {252 .hw_params = tfa9879_hw_params,253 .mute_stream = tfa9879_mute_stream,254 .set_fmt = tfa9879_set_fmt,255 .no_capture_mute = 1,256};257 258#define TFA9879_RATES SNDRV_PCM_RATE_8000_96000259 260#define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \261 SNDRV_PCM_FMTBIT_S24_LE)262 263static 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 274static 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 298static const struct i2c_device_id tfa9879_i2c_id[] = {299 { "tfa9879" },300 { }301};302MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);303 304static const struct of_device_id tfa9879_of_match[] = {305 { .compatible = "nxp,tfa9879", },306 { }307};308MODULE_DEVICE_TABLE(of, tfa9879_of_match);309 310static struct i2c_driver tfa9879_i2c_driver = {311 .driver = {312 .name = "tfa9879",313 .of_match_table = tfa9879_of_match,314 },315 .probe = tfa9879_i2c_probe,316 .id_table = tfa9879_i2c_id,317};318 319module_i2c_driver(tfa9879_i2c_driver);320 321MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver");322MODULE_AUTHOR("Peter Rosin <peda@axentia.se>");323MODULE_LICENSE("GPL");324