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 <sound/soc-dapm.h> 23 #include "ad193x.h" 24 25 /* codec private data */ 26 struct ad193x_priv { 27 struct snd_soc_codec codec; 28 u8 reg_cache[AD193X_NUM_REGS]; 29 }; 30 31 /* ad193x register cache & default register settings */ 32 static const u8 ad193x_reg[AD193X_NUM_REGS] = { 33 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 34 }; 35 36 static struct snd_soc_codec *ad193x_codec; 37 struct snd_soc_codec_device soc_codec_dev_ad193x; 38 39 /* 40 * AD193X volume/mute/de-emphasis etc. controls 41 */ 42 static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"}; 43 44 static const struct soc_enum ad193x_deemp_enum = 45 SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp); 46 47 static const struct snd_kcontrol_new ad193x_snd_controls[] = { 48 /* DAC volume control */ 49 SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL, 50 AD193X_DAC_R1_VOL, 0, 0xFF, 1), 51 SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL, 52 AD193X_DAC_R2_VOL, 0, 0xFF, 1), 53 SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL, 54 AD193X_DAC_R3_VOL, 0, 0xFF, 1), 55 SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL, 56 AD193X_DAC_R4_VOL, 0, 0xFF, 1), 57 58 /* ADC switch control */ 59 SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE, 60 AD193X_ADCR1_MUTE, 1, 1), 61 SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE, 62 AD193X_ADCR2_MUTE, 1, 1), 63 64 /* DAC switch control */ 65 SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE, 66 AD193X_DACR1_MUTE, 1, 1), 67 SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE, 68 AD193X_DACR2_MUTE, 1, 1), 69 SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE, 70 AD193X_DACR3_MUTE, 1, 1), 71 SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE, 72 AD193X_DACR4_MUTE, 1, 1), 73 74 /* ADC high-pass filter */ 75 SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0, 76 AD193X_ADC_HIGHPASS_FILTER, 1, 0), 77 78 /* DAC de-emphasis */ 79 SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum), 80 }; 81 82 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = { 83 SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1), 84 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), 85 SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0), 86 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0), 87 SND_SOC_DAPM_OUTPUT("DAC1OUT"), 88 SND_SOC_DAPM_OUTPUT("DAC2OUT"), 89 SND_SOC_DAPM_OUTPUT("DAC3OUT"), 90 SND_SOC_DAPM_OUTPUT("DAC4OUT"), 91 SND_SOC_DAPM_INPUT("ADC1IN"), 92 SND_SOC_DAPM_INPUT("ADC2IN"), 93 }; 94 95 static const struct snd_soc_dapm_route audio_paths[] = { 96 { "DAC", NULL, "PLL_PWR" }, 97 { "ADC", NULL, "PLL_PWR" }, 98 { "DAC", NULL, "ADC_PWR" }, 99 { "ADC", NULL, "ADC_PWR" }, 100 { "DAC1OUT", "DAC1 Switch", "DAC" }, 101 { "DAC2OUT", "DAC2 Switch", "DAC" }, 102 { "DAC3OUT", "DAC3 Switch", "DAC" }, 103 { "DAC4OUT", "DAC4 Switch", "DAC" }, 104 { "ADC", "ADC1 Switch", "ADC1IN" }, 105 { "ADC", "ADC2 Switch", "ADC2IN" }, 106 }; 107 108 /* 109 * DAI ops entries 110 */ 111 112 static int ad193x_mute(struct snd_soc_dai *dai, int mute) 113 { 114 struct snd_soc_codec *codec = dai->codec; 115 int reg; 116 117 reg = snd_soc_read(codec, AD193X_DAC_CTRL2); 118 reg = (mute > 0) ? reg | AD193X_DAC_MASTER_MUTE : reg & 119 (~AD193X_DAC_MASTER_MUTE); 120 snd_soc_write(codec, AD193X_DAC_CTRL2, reg); 121 122 return 0; 123 } 124 125 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, 126 unsigned int rx_mask, int slots, int width) 127 { 128 struct snd_soc_codec *codec = dai->codec; 129 int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); 130 int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2); 131 132 dac_reg &= ~AD193X_DAC_CHAN_MASK; 133 adc_reg &= ~AD193X_ADC_CHAN_MASK; 134 135 switch (slots) { 136 case 2: 137 dac_reg |= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT; 138 adc_reg |= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT; 139 break; 140 case 4: 141 dac_reg |= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT; 142 adc_reg |= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT; 143 break; 144 case 8: 145 dac_reg |= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT; 146 adc_reg |= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT; 147 break; 148 case 16: 149 dac_reg |= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT; 150 adc_reg |= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT; 151 break; 152 default: 153 return -EINVAL; 154 } 155 156 snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); 157 snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg); 158 159 return 0; 160 } 161 162 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai, 163 unsigned int fmt) 164 { 165 struct snd_soc_codec *codec = codec_dai->codec; 166 int adc_reg, dac_reg; 167 168 adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2); 169 dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); 170 171 /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S 172 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) 173 */ 174 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 175 case SND_SOC_DAIFMT_I2S: 176 adc_reg &= ~AD193X_ADC_SERFMT_MASK; 177 adc_reg |= AD193X_ADC_SERFMT_TDM; 178 break; 179 case SND_SOC_DAIFMT_DSP_A: 180 adc_reg &= ~AD193X_ADC_SERFMT_MASK; 181 adc_reg |= AD193X_ADC_SERFMT_AUX; 182 break; 183 default: 184 return -EINVAL; 185 } 186 187 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 188 case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */ 189 adc_reg &= ~AD193X_ADC_LEFT_HIGH; 190 adc_reg &= ~AD193X_ADC_BCLK_INV; 191 dac_reg &= ~AD193X_DAC_LEFT_HIGH; 192 dac_reg &= ~AD193X_DAC_BCLK_INV; 193 break; 194 case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */ 195 adc_reg |= AD193X_ADC_LEFT_HIGH; 196 adc_reg &= ~AD193X_ADC_BCLK_INV; 197 dac_reg |= AD193X_DAC_LEFT_HIGH; 198 dac_reg &= ~AD193X_DAC_BCLK_INV; 199 break; 200 case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */ 201 adc_reg &= ~AD193X_ADC_LEFT_HIGH; 202 adc_reg |= AD193X_ADC_BCLK_INV; 203 dac_reg &= ~AD193X_DAC_LEFT_HIGH; 204 dac_reg |= AD193X_DAC_BCLK_INV; 205 break; 206 207 case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */ 208 adc_reg |= AD193X_ADC_LEFT_HIGH; 209 adc_reg |= AD193X_ADC_BCLK_INV; 210 dac_reg |= AD193X_DAC_LEFT_HIGH; 211 dac_reg |= AD193X_DAC_BCLK_INV; 212 break; 213 default: 214 return -EINVAL; 215 } 216 217 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 218 case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ 219 adc_reg |= AD193X_ADC_LCR_MASTER; 220 adc_reg |= AD193X_ADC_BCLK_MASTER; 221 dac_reg |= AD193X_DAC_LCR_MASTER; 222 dac_reg |= AD193X_DAC_BCLK_MASTER; 223 break; 224 case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */ 225 adc_reg |= AD193X_ADC_LCR_MASTER; 226 adc_reg &= ~AD193X_ADC_BCLK_MASTER; 227 dac_reg |= AD193X_DAC_LCR_MASTER; 228 dac_reg &= ~AD193X_DAC_BCLK_MASTER; 229 break; 230 case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */ 231 adc_reg &= ~AD193X_ADC_LCR_MASTER; 232 adc_reg |= AD193X_ADC_BCLK_MASTER; 233 dac_reg &= ~AD193X_DAC_LCR_MASTER; 234 dac_reg |= AD193X_DAC_BCLK_MASTER; 235 break; 236 case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */ 237 adc_reg &= ~AD193X_ADC_LCR_MASTER; 238 adc_reg &= ~AD193X_ADC_BCLK_MASTER; 239 dac_reg &= ~AD193X_DAC_LCR_MASTER; 240 dac_reg &= ~AD193X_DAC_BCLK_MASTER; 241 break; 242 default: 243 return -EINVAL; 244 } 245 246 snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg); 247 snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); 248 249 return 0; 250 } 251 252 static int ad193x_hw_params(struct snd_pcm_substream *substream, 253 struct snd_pcm_hw_params *params, 254 struct snd_soc_dai *dai) 255 { 256 int word_len = 0, reg = 0; 257 258 struct snd_soc_pcm_runtime *rtd = substream->private_data; 259 struct snd_soc_device *socdev = rtd->socdev; 260 struct snd_soc_codec *codec = socdev->card->codec; 261 262 /* bit size */ 263 switch (params_format(params)) { 264 case SNDRV_PCM_FORMAT_S16_LE: 265 word_len = 3; 266 break; 267 case SNDRV_PCM_FORMAT_S20_3LE: 268 word_len = 1; 269 break; 270 case SNDRV_PCM_FORMAT_S24_LE: 271 case SNDRV_PCM_FORMAT_S32_LE: 272 word_len = 0; 273 break; 274 } 275 276 reg = snd_soc_read(codec, AD193X_DAC_CTRL2); 277 reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len; 278 snd_soc_write(codec, AD193X_DAC_CTRL2, reg); 279 280 reg = snd_soc_read(codec, AD193X_ADC_CTRL1); 281 reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) | word_len; 282 snd_soc_write(codec, AD193X_ADC_CTRL1, reg); 283 284 return 0; 285 } 286 287 static int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type) 288 { 289 struct snd_soc_codec *codec; 290 struct ad193x_priv *ad193x; 291 int ret; 292 293 if (ad193x_codec) { 294 dev_err(dev, "Another ad193x is registered\n"); 295 return -EINVAL; 296 } 297 298 ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL); 299 if (ad193x == NULL) 300 return -ENOMEM; 301 302 dev_set_drvdata(dev, ad193x); 303 304 codec = &ad193x->codec; 305 mutex_init(&codec->mutex); 306 codec->control_data = ctrl_data; 307 codec->dev = dev; 308 snd_soc_codec_set_drvdata(codec, ad193x); 309 codec->reg_cache = ad193x->reg_cache; 310 codec->reg_cache_size = AD193X_NUM_REGS; 311 codec->name = "AD193X"; 312 codec->owner = THIS_MODULE; 313 codec->dai = &ad193x_dai; 314 codec->num_dai = 1; 315 INIT_LIST_HEAD(&codec->dapm_widgets); 316 INIT_LIST_HEAD(&codec->dapm_paths); 317 318 ad193x_dai.dev = codec->dev; 319 ad193x_codec = codec; 320 321 memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS); 322 323 if (bus_type == SND_SOC_I2C) 324 ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type); 325 else 326 ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type); 327 if (ret < 0) { 328 dev_err(codec->dev, "failed to set cache I/O: %d\n", 329 ret); 330 kfree(ad193x); 331 return ret; 332 } 333 334 /* default setting for ad193x */ 335 336 /* unmute dac channels */ 337 snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0); 338 /* de-emphasis: 48kHz, powedown dac */ 339 snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A); 340 /* powerdown dac, dac in tdm mode */ 341 snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41); 342 /* high-pass filter enable */ 343 snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3); 344 /* sata delay=1, adc aux mode */ 345 snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43); 346 /* pll input: mclki/xi */ 347 snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */ 348 snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04); 349 350 ret = snd_soc_register_codec(codec); 351 if (ret != 0) { 352 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 353 kfree(ad193x); 354 return ret; 355 } 356 357 ret = snd_soc_register_dai(&ad193x_dai); 358 if (ret != 0) { 359 dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 360 snd_soc_unregister_codec(codec); 361 kfree(ad193x); 362 return ret; 363 } 364 365 return 0; 366 } 367 368 static int ad193x_bus_remove(struct device *dev) 369 { 370 struct ad193x_priv *ad193x = dev_get_drvdata(dev); 371 372 snd_soc_unregister_dai(&ad193x_dai); 373 snd_soc_unregister_codec(&ad193x->codec); 374 kfree(ad193x); 375 ad193x_codec = NULL; 376 377 return 0; 378 } 379 380 static struct snd_soc_dai_ops ad193x_dai_ops = { 381 .hw_params = ad193x_hw_params, 382 .digital_mute = ad193x_mute, 383 .set_tdm_slot = ad193x_set_tdm_slot, 384 .set_fmt = ad193x_set_dai_fmt, 385 }; 386 387 /* codec DAI instance */ 388 struct snd_soc_dai ad193x_dai = { 389 .name = "AD193X", 390 .playback = { 391 .stream_name = "Playback", 392 .channels_min = 2, 393 .channels_max = 8, 394 .rates = SNDRV_PCM_RATE_48000, 395 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | 396 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, 397 }, 398 .capture = { 399 .stream_name = "Capture", 400 .channels_min = 2, 401 .channels_max = 4, 402 .rates = SNDRV_PCM_RATE_48000, 403 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | 404 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, 405 }, 406 .ops = &ad193x_dai_ops, 407 }; 408 EXPORT_SYMBOL_GPL(ad193x_dai); 409 410 static int ad193x_probe(struct platform_device *pdev) 411 { 412 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 413 struct snd_soc_codec *codec; 414 int ret = 0; 415 416 if (ad193x_codec == NULL) { 417 dev_err(&pdev->dev, "Codec device not registered\n"); 418 return -ENODEV; 419 } 420 421 socdev->card->codec = ad193x_codec; 422 codec = ad193x_codec; 423 424 /* register pcms */ 425 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 426 if (ret < 0) { 427 dev_err(codec->dev, "failed to create pcms: %d\n", ret); 428 goto pcm_err; 429 } 430 431 snd_soc_add_controls(codec, ad193x_snd_controls, 432 ARRAY_SIZE(ad193x_snd_controls)); 433 snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets, 434 ARRAY_SIZE(ad193x_dapm_widgets)); 435 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); 436 437 pcm_err: 438 return ret; 439 } 440 441 /* power down chip */ 442 static int ad193x_remove(struct platform_device *pdev) 443 { 444 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 445 446 snd_soc_free_pcms(socdev); 447 snd_soc_dapm_free(socdev); 448 449 return 0; 450 } 451 452 struct snd_soc_codec_device soc_codec_dev_ad193x = { 453 .probe = ad193x_probe, 454 .remove = ad193x_remove, 455 }; 456 EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x); 457 458 #if defined(CONFIG_SPI_MASTER) 459 static int __devinit ad193x_spi_probe(struct spi_device *spi) 460 { 461 return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI); 462 } 463 464 static int __devexit ad193x_spi_remove(struct spi_device *spi) 465 { 466 return ad193x_bus_remove(&spi->dev); 467 } 468 469 static struct spi_driver ad193x_spi_driver = { 470 .driver = { 471 .name = "ad193x", 472 .owner = THIS_MODULE, 473 }, 474 .probe = ad193x_spi_probe, 475 .remove = __devexit_p(ad193x_spi_remove), 476 }; 477 #endif 478 479 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 480 static const struct i2c_device_id ad193x_id[] = { 481 { "ad1936", 0 }, 482 { "ad1937", 0 }, 483 { } 484 }; 485 MODULE_DEVICE_TABLE(i2c, ad193x_id); 486 487 static int __devinit ad193x_i2c_probe(struct i2c_client *client, 488 const struct i2c_device_id *id) 489 { 490 return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C); 491 } 492 493 static int __devexit ad193x_i2c_remove(struct i2c_client *client) 494 { 495 return ad193x_bus_remove(&client->dev); 496 } 497 498 static struct i2c_driver ad193x_i2c_driver = { 499 .driver = { 500 .name = "ad193x", 501 }, 502 .probe = ad193x_i2c_probe, 503 .remove = __devexit_p(ad193x_i2c_remove), 504 .id_table = ad193x_id, 505 }; 506 #endif 507 508 static int __init ad193x_modinit(void) 509 { 510 int ret; 511 512 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 513 ret = i2c_add_driver(&ad193x_i2c_driver); 514 if (ret != 0) { 515 printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n", 516 ret); 517 } 518 #endif 519 520 #if defined(CONFIG_SPI_MASTER) 521 ret = spi_register_driver(&ad193x_spi_driver); 522 if (ret != 0) { 523 printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n", 524 ret); 525 } 526 #endif 527 return ret; 528 } 529 module_init(ad193x_modinit); 530 531 static void __exit ad193x_modexit(void) 532 { 533 #if defined(CONFIG_SPI_MASTER) 534 spi_unregister_driver(&ad193x_spi_driver); 535 #endif 536 537 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 538 i2c_del_driver(&ad193x_i2c_driver); 539 #endif 540 } 541 module_exit(ad193x_modexit); 542 543 MODULE_DESCRIPTION("ASoC ad193x driver"); 544 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 545 MODULE_LICENSE("GPL"); 546