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_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 } 106 107 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 .mute_stream = tfa9879_mute_stream, 255 .set_fmt = tfa9879_set_fmt, 256 .no_capture_mute = 1, 257 }; 258 259 #define TFA9879_RATES SNDRV_PCM_RATE_8000_96000 260 261 #define TFA9879_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 262 SNDRV_PCM_FMTBIT_S24_LE) 263 264 static struct snd_soc_dai_driver tfa9879_dai = { 265 .name = "tfa9879-hifi", 266 .playback = { 267 .stream_name = "Playback", 268 .channels_min = 2, 269 .channels_max = 2, 270 .rates = TFA9879_RATES, 271 .formats = TFA9879_FORMATS, }, 272 .ops = &tfa9879_dai_ops, 273 }; 274 275 static int tfa9879_i2c_probe(struct i2c_client *i2c) 276 { 277 struct tfa9879_priv *tfa9879; 278 int i; 279 280 tfa9879 = devm_kzalloc(&i2c->dev, sizeof(*tfa9879), GFP_KERNEL); 281 if (!tfa9879) 282 return -ENOMEM; 283 284 i2c_set_clientdata(i2c, tfa9879); 285 286 tfa9879->regmap = devm_regmap_init_i2c(i2c, &tfa9879_regmap); 287 if (IS_ERR(tfa9879->regmap)) 288 return PTR_ERR(tfa9879->regmap); 289 290 /* Ensure the device is in reset state */ 291 for (i = 0; i < ARRAY_SIZE(tfa9879_regs); i++) 292 regmap_write(tfa9879->regmap, 293 tfa9879_regs[i].reg, tfa9879_regs[i].def); 294 295 return devm_snd_soc_register_component(&i2c->dev, &tfa9879_component, 296 &tfa9879_dai, 1); 297 } 298 299 static const struct i2c_device_id tfa9879_i2c_id[] = { 300 { "tfa9879", 0 }, 301 { } 302 }; 303 MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id); 304 305 static const struct of_device_id tfa9879_of_match[] = { 306 { .compatible = "nxp,tfa9879", }, 307 { } 308 }; 309 MODULE_DEVICE_TABLE(of, tfa9879_of_match); 310 311 static struct i2c_driver tfa9879_i2c_driver = { 312 .driver = { 313 .name = "tfa9879", 314 .of_match_table = tfa9879_of_match, 315 }, 316 .probe_new = tfa9879_i2c_probe, 317 .id_table = tfa9879_i2c_id, 318 }; 319 320 module_i2c_driver(tfa9879_i2c_driver); 321 322 MODULE_DESCRIPTION("ASoC NXP Semiconductors TFA9879 driver"); 323 MODULE_AUTHOR("Peter Rosin <peda@axentia.se>"); 324 MODULE_LICENSE("GPL"); 325