1 /* 2 * AD193X Audio Codec driver supporting AD1936/7/8/9 3 * 4 * Copyright 2010 Analog Devices Inc. 5 * 6 * Licensed under the GPL-2 or later. 7 */ 8 9 #include <linux/init.h> 10 #include <linux/module.h> 11 #include <linux/kernel.h> 12 #include <linux/device.h> 13 #include <linux/i2c.h> 14 #include <linux/spi/spi.h> 15 #include <linux/slab.h> 16 #include <sound/core.h> 17 #include <sound/pcm.h> 18 #include <sound/pcm_params.h> 19 #include <sound/initval.h> 20 #include <sound/soc.h> 21 #include <sound/tlv.h> 22 #include "ad193x.h" 23 24 /* codec private data */ 25 struct ad193x_priv { 26 struct regmap *regmap; 27 int sysclk; 28 }; 29 30 /* 31 * AD193X volume/mute/de-emphasis etc. controls 32 */ 33 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"}; 34 35 static const struct soc_enum ad193x_deemp_enum = 36 SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp); 37 38 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0); 39 40 static const struct snd_kcontrol_new ad193x_snd_controls[] = { 41 /* DAC volume control */ 42 SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL, 43 AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv), 44 SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL, 45 AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv), 46 SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL, 47 AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv), 48 SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL, 49 AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv), 50 51 /* ADC switch control */ 52 SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE, 53 AD193X_ADCR1_MUTE, 1, 1), 54 SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE, 55 AD193X_ADCR2_MUTE, 1, 1), 56 57 /* DAC switch control */ 58 SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE, 59 AD193X_DACR1_MUTE, 1, 1), 60 SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE, 61 AD193X_DACR2_MUTE, 1, 1), 62 SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE, 63 AD193X_DACR3_MUTE, 1, 1), 64 SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE, 65 AD193X_DACR4_MUTE, 1, 1), 66 67 /* ADC high-pass filter */ 68 SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0, 69 AD193X_ADC_HIGHPASS_FILTER, 1, 0), 70 71 /* DAC de-emphasis */ 72 SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum), 73 }; 74 75 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = { 76 SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1), 77 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), 78 SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0), 79 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0), 80 SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0), 81 SND_SOC_DAPM_OUTPUT("DAC1OUT"), 82 SND_SOC_DAPM_OUTPUT("DAC2OUT"), 83 SND_SOC_DAPM_OUTPUT("DAC3OUT"), 84 SND_SOC_DAPM_OUTPUT("DAC4OUT"), 85 SND_SOC_DAPM_INPUT("ADC1IN"), 86 SND_SOC_DAPM_INPUT("ADC2IN"), 87 }; 88 89 static const struct snd_soc_dapm_route audio_paths[] = { 90 { "DAC", NULL, "SYSCLK" }, 91 { "ADC", NULL, "SYSCLK" }, 92 { "DAC", NULL, "ADC_PWR" }, 93 { "ADC", NULL, "ADC_PWR" }, 94 { "DAC1OUT", NULL, "DAC" }, 95 { "DAC2OUT", NULL, "DAC" }, 96 { "DAC3OUT", NULL, "DAC" }, 97 { "DAC4OUT", NULL, "DAC" }, 98 { "ADC", NULL, "ADC1IN" }, 99 { "ADC", NULL, "ADC2IN" }, 100 { "SYSCLK", NULL, "PLL_PWR" }, 101 }; 102 103 /* 104 * DAI ops entries 105 */ 106 107 static int ad193x_mute(struct snd_soc_dai *dai, int mute) 108 { 109 struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec); 110 111 if (mute) 112 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2, 113 AD193X_DAC_MASTER_MUTE, 114 AD193X_DAC_MASTER_MUTE); 115 else 116 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2, 117 AD193X_DAC_MASTER_MUTE, 0); 118 119 return 0; 120 } 121 122 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 123 unsigned int rx_mask, int slots, int width) 124 { 125 struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec); 126 unsigned int channels; 127 128 switch (slots) { 129 case 2: 130 channels = AD193X_2_CHANNELS; 131 break; 132 case 4: 133 channels = AD193X_4_CHANNELS; 134 break; 135 case 8: 136 channels = AD193X_8_CHANNELS; 137 break; 138 case 16: 139 channels = AD193X_16_CHANNELS; 140 break; 141 default: 142 return -EINVAL; 143 } 144 145 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1, 146 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT); 147 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2, 148 AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT); 149 150 return 0; 151 } 152 153 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai, 154 unsigned int fmt) 155 { 156 struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec); 157 unsigned int adc_serfmt = 0; 158 unsigned int adc_fmt = 0; 159 unsigned int dac_fmt = 0; 160 161 /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S 162 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) 163 */ 164 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 165 case SND_SOC_DAIFMT_I2S: 166 adc_serfmt |= AD193X_ADC_SERFMT_TDM; 167 break; 168 case SND_SOC_DAIFMT_DSP_A: 169 adc_serfmt |= AD193X_ADC_SERFMT_AUX; 170 break; 171 default: 172 return -EINVAL; 173 } 174 175 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 176 case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */ 177 break; 178 case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */ 179 adc_fmt |= AD193X_ADC_LEFT_HIGH; 180 dac_fmt |= AD193X_DAC_LEFT_HIGH; 181 break; 182 case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */ 183 adc_fmt |= AD193X_ADC_BCLK_INV; 184 dac_fmt |= AD193X_DAC_BCLK_INV; 185 break; 186 case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */ 187 adc_fmt |= AD193X_ADC_LEFT_HIGH; 188 adc_fmt |= AD193X_ADC_BCLK_INV; 189 dac_fmt |= AD193X_DAC_LEFT_HIGH; 190 dac_fmt |= AD193X_DAC_BCLK_INV; 191 break; 192 default: 193 return -EINVAL; 194 } 195 196 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 197 case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ 198 adc_fmt |= AD193X_ADC_LCR_MASTER; 199 adc_fmt |= AD193X_ADC_BCLK_MASTER; 200 dac_fmt |= AD193X_DAC_LCR_MASTER; 201 dac_fmt |= AD193X_DAC_BCLK_MASTER; 202 break; 203 case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */ 204 adc_fmt |= AD193X_ADC_LCR_MASTER; 205 dac_fmt |= AD193X_DAC_LCR_MASTER; 206 break; 207 case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */ 208 adc_fmt |= AD193X_ADC_BCLK_MASTER; 209 dac_fmt |= AD193X_DAC_BCLK_MASTER; 210 break; 211 case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */ 212 break; 213 default: 214 return -EINVAL; 215 } 216 217 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1, 218 AD193X_ADC_SERFMT_MASK, adc_serfmt); 219 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2, 220 AD193X_ADC_FMT_MASK, adc_fmt); 221 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1, 222 AD193X_DAC_FMT_MASK, dac_fmt); 223 224 return 0; 225 } 226 227 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai, 228 int clk_id, unsigned int freq, int dir) 229 { 230 struct snd_soc_codec *codec = codec_dai->codec; 231 struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec); 232 switch (freq) { 233 case 12288000: 234 case 18432000: 235 case 24576000: 236 case 36864000: 237 ad193x->sysclk = freq; 238 return 0; 239 } 240 return -EINVAL; 241 } 242 243 static int ad193x_hw_params(struct snd_pcm_substream *substream, 244 struct snd_pcm_hw_params *params, 245 struct snd_soc_dai *dai) 246 { 247 int word_len = 0, master_rate = 0; 248 struct snd_soc_codec *codec = dai->codec; 249 struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec); 250 251 /* bit size */ 252 switch (params_format(params)) { 253 case SNDRV_PCM_FORMAT_S16_LE: 254 word_len = 3; 255 break; 256 case SNDRV_PCM_FORMAT_S20_3LE: 257 word_len = 1; 258 break; 259 case SNDRV_PCM_FORMAT_S24_LE: 260 case SNDRV_PCM_FORMAT_S32_LE: 261 word_len = 0; 262 break; 263 } 264 265 switch (ad193x->sysclk) { 266 case 12288000: 267 master_rate = AD193X_PLL_INPUT_256; 268 break; 269 case 18432000: 270 master_rate = AD193X_PLL_INPUT_384; 271 break; 272 case 24576000: 273 master_rate = AD193X_PLL_INPUT_512; 274 break; 275 case 36864000: 276 master_rate = AD193X_PLL_INPUT_768; 277 break; 278 } 279 280 regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 281 AD193X_PLL_INPUT_MASK, master_rate); 282 283 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2, 284 AD193X_DAC_WORD_LEN_MASK, 285 word_len << AD193X_DAC_WORD_LEN_SHFT); 286 287 regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1, 288 AD193X_ADC_WORD_LEN_MASK, word_len); 289 290 return 0; 291 } 292 293 static const struct snd_soc_dai_ops ad193x_dai_ops = { 294 .hw_params = ad193x_hw_params, 295 .digital_mute = ad193x_mute, 296 .set_tdm_slot = ad193x_set_tdm_slot, 297 .set_sysclk = ad193x_set_dai_sysclk, 298 .set_fmt = ad193x_set_dai_fmt, 299 }; 300 301 /* codec DAI instance */ 302 static struct snd_soc_dai_driver ad193x_dai = { 303 .name = "ad193x-hifi", 304 .playback = { 305 .stream_name = "Playback", 306 .channels_min = 2, 307 .channels_max = 8, 308 .rates = SNDRV_PCM_RATE_48000, 309 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | 310 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, 311 }, 312 .capture = { 313 .stream_name = "Capture", 314 .channels_min = 2, 315 .channels_max = 4, 316 .rates = SNDRV_PCM_RATE_48000, 317 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | 318 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, 319 }, 320 .ops = &ad193x_dai_ops, 321 }; 322 323 static int ad193x_probe(struct snd_soc_codec *codec) 324 { 325 struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec); 326 int ret; 327 328 codec->control_data = ad193x->regmap; 329 ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP); 330 if (ret < 0) { 331 dev_err(codec->dev, "failed to set cache I/O: %d\n", ret); 332 return ret; 333 } 334 335 /* default setting for ad193x */ 336 337 /* unmute dac channels */ 338 regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0); 339 /* de-emphasis: 48kHz, powedown dac */ 340 regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A); 341 /* powerdown dac, dac in tdm mode */ 342 regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x41); 343 /* high-pass filter enable */ 344 regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3); 345 /* sata delay=1, adc aux mode */ 346 regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43); 347 /* pll input: mclki/xi */ 348 regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */ 349 regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04); 350 351 return ret; 352 } 353 354 static struct snd_soc_codec_driver soc_codec_dev_ad193x = { 355 .probe = ad193x_probe, 356 .controls = ad193x_snd_controls, 357 .num_controls = ARRAY_SIZE(ad193x_snd_controls), 358 .dapm_widgets = ad193x_dapm_widgets, 359 .num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets), 360 .dapm_routes = audio_paths, 361 .num_dapm_routes = ARRAY_SIZE(audio_paths), 362 }; 363 364 static bool adau193x_reg_volatile(struct device *dev, unsigned int reg) 365 { 366 return false; 367 } 368 369 #if defined(CONFIG_SPI_MASTER) 370 371 static const struct regmap_config ad193x_spi_regmap_config = { 372 .val_bits = 8, 373 .reg_bits = 16, 374 .read_flag_mask = 0x09, 375 .write_flag_mask = 0x08, 376 377 .max_register = AD193X_NUM_REGS - 1, 378 .volatile_reg = adau193x_reg_volatile, 379 }; 380 381 static int ad193x_spi_probe(struct spi_device *spi) 382 { 383 struct ad193x_priv *ad193x; 384 385 ad193x = devm_kzalloc(&spi->dev, sizeof(struct ad193x_priv), 386 GFP_KERNEL); 387 if (ad193x == NULL) 388 return -ENOMEM; 389 390 ad193x->regmap = devm_regmap_init_spi(spi, &ad193x_spi_regmap_config); 391 if (IS_ERR(ad193x->regmap)) 392 return PTR_ERR(ad193x->regmap); 393 394 spi_set_drvdata(spi, ad193x); 395 396 return snd_soc_register_codec(&spi->dev, &soc_codec_dev_ad193x, 397 &ad193x_dai, 1); 398 } 399 400 static int ad193x_spi_remove(struct spi_device *spi) 401 { 402 snd_soc_unregister_codec(&spi->dev); 403 return 0; 404 } 405 406 static struct spi_driver ad193x_spi_driver = { 407 .driver = { 408 .name = "ad193x", 409 .owner = THIS_MODULE, 410 }, 411 .probe = ad193x_spi_probe, 412 .remove = ad193x_spi_remove, 413 }; 414 #endif 415 416 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 417 418 static const struct regmap_config ad193x_i2c_regmap_config = { 419 .val_bits = 8, 420 .reg_bits = 8, 421 422 .max_register = AD193X_NUM_REGS - 1, 423 .volatile_reg = adau193x_reg_volatile, 424 }; 425 426 static const struct i2c_device_id ad193x_id[] = { 427 { "ad1936", 0 }, 428 { "ad1937", 0 }, 429 { } 430 }; 431 MODULE_DEVICE_TABLE(i2c, ad193x_id); 432 433 static int ad193x_i2c_probe(struct i2c_client *client, 434 const struct i2c_device_id *id) 435 { 436 struct ad193x_priv *ad193x; 437 438 ad193x = devm_kzalloc(&client->dev, sizeof(struct ad193x_priv), 439 GFP_KERNEL); 440 if (ad193x == NULL) 441 return -ENOMEM; 442 443 ad193x->regmap = devm_regmap_init_i2c(client, &ad193x_i2c_regmap_config); 444 if (IS_ERR(ad193x->regmap)) 445 return PTR_ERR(ad193x->regmap); 446 447 i2c_set_clientdata(client, ad193x); 448 449 return snd_soc_register_codec(&client->dev, &soc_codec_dev_ad193x, 450 &ad193x_dai, 1); 451 } 452 453 static int ad193x_i2c_remove(struct i2c_client *client) 454 { 455 snd_soc_unregister_codec(&client->dev); 456 return 0; 457 } 458 459 static struct i2c_driver ad193x_i2c_driver = { 460 .driver = { 461 .name = "ad193x", 462 }, 463 .probe = ad193x_i2c_probe, 464 .remove = ad193x_i2c_remove, 465 .id_table = ad193x_id, 466 }; 467 #endif 468 469 static int __init ad193x_modinit(void) 470 { 471 int ret; 472 473 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 474 ret = i2c_add_driver(&ad193x_i2c_driver); 475 if (ret != 0) { 476 printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n", 477 ret); 478 } 479 #endif 480 481 #if defined(CONFIG_SPI_MASTER) 482 ret = spi_register_driver(&ad193x_spi_driver); 483 if (ret != 0) { 484 printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n", 485 ret); 486 } 487 #endif 488 return ret; 489 } 490 module_init(ad193x_modinit); 491 492 static void __exit ad193x_modexit(void) 493 { 494 #if defined(CONFIG_SPI_MASTER) 495 spi_unregister_driver(&ad193x_spi_driver); 496 #endif 497 498 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 499 i2c_del_driver(&ad193x_i2c_driver); 500 #endif 501 } 502 module_exit(ad193x_modexit); 503 504 MODULE_DESCRIPTION("ASoC ad193x driver"); 505 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 506 MODULE_LICENSE("GPL"); 507