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 .controls = tfa9879_controls, 235 .num_controls = ARRAY_SIZE(tfa9879_controls), 236 237 .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 static const struct regmap_config tfa9879_regmap = { 244 .reg_bits = 8, 245 .val_bits = 16, 246 247 .volatile_reg = tfa9879_volatile_reg, 248 .max_register = TFA9879_MISC_STATUS, 249 .reg_defaults = tfa9879_regs, 250 .num_reg_defaults = ARRAY_SIZE(tfa9879_regs), 251 .cache_type = REGCACHE_RBTREE, 252 }; 253 254 static const struct snd_soc_dai_ops tfa9879_dai_ops = { 255 .hw_params = tfa9879_hw_params, 256 .digital_mute = tfa9879_digital_mute, 257 .set_fmt = tfa9879_set_fmt, 258 }; 259 260 #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000 261 262 #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 263 SNDRV_PCM_FMTBIT_S24_LE) 264 265 static struct snd_soc_dai_driver tfa9879_dai = { 266 .name = "tfa9879-hifi", 267 .playback = { 268 .stream_name = "Playback", 269 .channels_min = 2, 270 .channels_max = 2, 271 .rates = TFA9879_RATES, 272 .formats = TFA9879_FORMATS, }, 273 .ops = &tfa9879_dai_ops, 274 }; 275 276 static int tfa9879_i2c_probe(struct i2c_client *i2c, 277 const struct i2c_device_id *id) 278 { 279 struct tfa9879_priv *tfa9879; 280 int i; 281 282 tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL); 283 if (!tfa9879) 284 return -ENOMEM; 285 286 i2c_set_clientdata(i2c, tfa9879); 287 288 tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap); 289 if (IS_ERR(tfa9879->regmap)) 290 return PTR_ERR(tfa9879->regmap); 291 292 /* Ensure the device is in reset state */ 293 for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++) 294 regmap_write(tfa9879->regmap, 295 tfa9879_regs[i].reg, tfa9879_regs[i].def); 296 297 return snd_soc_register_codec(&i2c->dev, &tfa9879_codec, 298 &tfa9879_dai, 1); 299 } 300 301 static int tfa9879_i2c_remove(struct i2c_client *client) 302 { 303 snd_soc_unregister_codec(&client->dev); 304 305 return 0; 306 } 307 308 static const struct i2c_device_id tfa9879_i2c_id[] = { 309 { "tfa9879", 0 }, 310 { } 311 }; 312 MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id); 313 314 static struct i2c_driver tfa9879_i2c_driver = { 315 .driver = { 316 .name = "tfa9879", 317 }, 318 .probe = tfa9879_i2c_probe, 319 .remove = tfa9879_i2c_remove, 320 .id_table = tfa9879_i2c_id, 321 }; 322 323 module_i2c_driver(tfa9879_i2c_driver); 324 325 MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver"); 326 MODULE_AUTHOR("Peter Rosin <peda@axentia.se>"); 327 MODULE_LICENSE("GPL"); 328