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_reg1, adc_reg2, dac_reg; 167 168 adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1); 169 adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2); 170 dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); 171 172 /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S 173 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) 174 */ 175 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 176 case SND_SOC_DAIFMT_I2S: 177 adc_reg1 &= ~AD193X_ADC_SERFMT_MASK; 178 adc_reg1 |= AD193X_ADC_SERFMT_TDM; 179 break; 180 case SND_SOC_DAIFMT_DSP_A: 181 adc_reg1 &= ~AD193X_ADC_SERFMT_MASK; 182 adc_reg1 |= AD193X_ADC_SERFMT_AUX; 183 break; 184 default: 185 return -EINVAL; 186 } 187 188 switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 189 case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */ 190 adc_reg2 &= ~AD193X_ADC_LEFT_HIGH; 191 adc_reg2 &= ~AD193X_ADC_BCLK_INV; 192 dac_reg &= ~AD193X_DAC_LEFT_HIGH; 193 dac_reg &= ~AD193X_DAC_BCLK_INV; 194 break; 195 case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */ 196 adc_reg2 |= AD193X_ADC_LEFT_HIGH; 197 adc_reg2 &= ~AD193X_ADC_BCLK_INV; 198 dac_reg |= AD193X_DAC_LEFT_HIGH; 199 dac_reg &= ~AD193X_DAC_BCLK_INV; 200 break; 201 case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */ 202 adc_reg2 &= ~AD193X_ADC_LEFT_HIGH; 203 adc_reg2 |= AD193X_ADC_BCLK_INV; 204 dac_reg &= ~AD193X_DAC_LEFT_HIGH; 205 dac_reg |= AD193X_DAC_BCLK_INV; 206 break; 207 208 case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */ 209 adc_reg2 |= AD193X_ADC_LEFT_HIGH; 210 adc_reg2 |= AD193X_ADC_BCLK_INV; 211 dac_reg |= AD193X_DAC_LEFT_HIGH; 212 dac_reg |= AD193X_DAC_BCLK_INV; 213 break; 214 default: 215 return -EINVAL; 216 } 217 218 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 219 case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ 220 adc_reg2 |= AD193X_ADC_LCR_MASTER; 221 adc_reg2 |= AD193X_ADC_BCLK_MASTER; 222 dac_reg |= AD193X_DAC_LCR_MASTER; 223 dac_reg |= AD193X_DAC_BCLK_MASTER; 224 break; 225 case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */ 226 adc_reg2 |= AD193X_ADC_LCR_MASTER; 227 adc_reg2 &= ~AD193X_ADC_BCLK_MASTER; 228 dac_reg |= AD193X_DAC_LCR_MASTER; 229 dac_reg &= ~AD193X_DAC_BCLK_MASTER; 230 break; 231 case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */ 232 adc_reg2 &= ~AD193X_ADC_LCR_MASTER; 233 adc_reg2 |= AD193X_ADC_BCLK_MASTER; 234 dac_reg &= ~AD193X_DAC_LCR_MASTER; 235 dac_reg |= AD193X_DAC_BCLK_MASTER; 236 break; 237 case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */ 238 adc_reg2 &= ~AD193X_ADC_LCR_MASTER; 239 adc_reg2 &= ~AD193X_ADC_BCLK_MASTER; 240 dac_reg &= ~AD193X_DAC_LCR_MASTER; 241 dac_reg &= ~AD193X_DAC_BCLK_MASTER; 242 break; 243 default: 244 return -EINVAL; 245 } 246 247 snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1); 248 snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2); 249 snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); 250 251 return 0; 252 } 253 254 static int ad193x_hw_params(struct snd_pcm_substream *substream, 255 struct snd_pcm_hw_params *params, 256 struct snd_soc_dai *dai) 257 { 258 int word_len = 0, reg = 0; 259 260 struct snd_soc_pcm_runtime *rtd = substream->private_data; 261 struct snd_soc_device *socdev = rtd->socdev; 262 struct snd_soc_codec *codec = socdev->card->codec; 263 264 /* bit size */ 265 switch (params_format(params)) { 266 case SNDRV_PCM_FORMAT_S16_LE: 267 word_len = 3; 268 break; 269 case SNDRV_PCM_FORMAT_S20_3LE: 270 word_len = 1; 271 break; 272 case SNDRV_PCM_FORMAT_S24_LE: 273 case SNDRV_PCM_FORMAT_S32_LE: 274 word_len = 0; 275 break; 276 } 277 278 reg = snd_soc_read(codec, AD193X_DAC_CTRL2); 279 reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len; 280 snd_soc_write(codec, AD193X_DAC_CTRL2, reg); 281 282 reg = snd_soc_read(codec, AD193X_ADC_CTRL1); 283 reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) | word_len; 284 snd_soc_write(codec, AD193X_ADC_CTRL1, reg); 285 286 return 0; 287 } 288 289 static int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type) 290 { 291 struct snd_soc_codec *codec; 292 struct ad193x_priv *ad193x; 293 int ret; 294 295 if (ad193x_codec) { 296 dev_err(dev, "Another ad193x is registered\n"); 297 return -EINVAL; 298 } 299 300 ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL); 301 if (ad193x == NULL) 302 return -ENOMEM; 303 304 dev_set_drvdata(dev, ad193x); 305 306 codec = &ad193x->codec; 307 mutex_init(&codec->mutex); 308 codec->control_data = ctrl_data; 309 codec->dev = dev; 310 snd_soc_codec_set_drvdata(codec, ad193x); 311 codec->reg_cache = ad193x->reg_cache; 312 codec->reg_cache_size = AD193X_NUM_REGS; 313 codec->name = "AD193X"; 314 codec->owner = THIS_MODULE; 315 codec->dai = &ad193x_dai; 316 codec->num_dai = 1; 317 INIT_LIST_HEAD(&codec->dapm_widgets); 318 INIT_LIST_HEAD(&codec->dapm_paths); 319 320 ad193x_dai.dev = codec->dev; 321 ad193x_codec = codec; 322 323 memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS); 324 325 if (bus_type == SND_SOC_I2C) 326 ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type); 327 else 328 ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type); 329 if (ret < 0) { 330 dev_err(codec->dev, "failed to set cache I/O: %d\n", 331 ret); 332 kfree(ad193x); 333 return ret; 334 } 335 336 /* default setting for ad193x */ 337 338 /* unmute dac channels */ 339 snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0); 340 /* de-emphasis: 48kHz, powedown dac */ 341 snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A); 342 /* powerdown dac, dac in tdm mode */ 343 snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41); 344 /* high-pass filter enable */ 345 snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3); 346 /* sata delay=1, adc aux mode */ 347 snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43); 348 /* pll input: mclki/xi */ 349 snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */ 350 snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04); 351 352 ret = snd_soc_register_codec(codec); 353 if (ret != 0) { 354 dev_err(codec->dev, "Failed to register codec: %d\n", ret); 355 kfree(ad193x); 356 return ret; 357 } 358 359 ret = snd_soc_register_dai(&ad193x_dai); 360 if (ret != 0) { 361 dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 362 snd_soc_unregister_codec(codec); 363 kfree(ad193x); 364 return ret; 365 } 366 367 return 0; 368 } 369 370 static int ad193x_bus_remove(struct device *dev) 371 { 372 struct ad193x_priv *ad193x = dev_get_drvdata(dev); 373 374 snd_soc_unregister_dai(&ad193x_dai); 375 snd_soc_unregister_codec(&ad193x->codec); 376 kfree(ad193x); 377 ad193x_codec = NULL; 378 379 return 0; 380 } 381 382 static struct snd_soc_dai_ops ad193x_dai_ops = { 383 .hw_params = ad193x_hw_params, 384 .digital_mute = ad193x_mute, 385 .set_tdm_slot = ad193x_set_tdm_slot, 386 .set_fmt = ad193x_set_dai_fmt, 387 }; 388 389 /* codec DAI instance */ 390 struct snd_soc_dai ad193x_dai = { 391 .name = "AD193X", 392 .playback = { 393 .stream_name = "Playback", 394 .channels_min = 2, 395 .channels_max = 8, 396 .rates = SNDRV_PCM_RATE_48000, 397 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | 398 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, 399 }, 400 .capture = { 401 .stream_name = "Capture", 402 .channels_min = 2, 403 .channels_max = 4, 404 .rates = SNDRV_PCM_RATE_48000, 405 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | 406 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, 407 }, 408 .ops = &ad193x_dai_ops, 409 }; 410 EXPORT_SYMBOL_GPL(ad193x_dai); 411 412 static int ad193x_probe(struct platform_device *pdev) 413 { 414 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 415 struct snd_soc_codec *codec; 416 int ret = 0; 417 418 if (ad193x_codec == NULL) { 419 dev_err(&pdev->dev, "Codec device not registered\n"); 420 return -ENODEV; 421 } 422 423 socdev->card->codec = ad193x_codec; 424 codec = ad193x_codec; 425 426 /* register pcms */ 427 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 428 if (ret < 0) { 429 dev_err(codec->dev, "failed to create pcms: %d\n", ret); 430 goto pcm_err; 431 } 432 433 snd_soc_add_controls(codec, ad193x_snd_controls, 434 ARRAY_SIZE(ad193x_snd_controls)); 435 snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets, 436 ARRAY_SIZE(ad193x_dapm_widgets)); 437 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); 438 439 pcm_err: 440 return ret; 441 } 442 443 /* power down chip */ 444 static int ad193x_remove(struct platform_device *pdev) 445 { 446 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 447 448 snd_soc_free_pcms(socdev); 449 snd_soc_dapm_free(socdev); 450 451 return 0; 452 } 453 454 struct snd_soc_codec_device soc_codec_dev_ad193x = { 455 .probe = ad193x_probe, 456 .remove = ad193x_remove, 457 }; 458 EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x); 459 460 #if defined(CONFIG_SPI_MASTER) 461 static int __devinit ad193x_spi_probe(struct spi_device *spi) 462 { 463 return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI); 464 } 465 466 static int __devexit ad193x_spi_remove(struct spi_device *spi) 467 { 468 return ad193x_bus_remove(&spi->dev); 469 } 470 471 static struct spi_driver ad193x_spi_driver = { 472 .driver = { 473 .name = "ad193x", 474 .owner = THIS_MODULE, 475 }, 476 .probe = ad193x_spi_probe, 477 .remove = __devexit_p(ad193x_spi_remove), 478 }; 479 #endif 480 481 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 482 static const struct i2c_device_id ad193x_id[] = { 483 { "ad1936", 0 }, 484 { "ad1937", 0 }, 485 { } 486 }; 487 MODULE_DEVICE_TABLE(i2c, ad193x_id); 488 489 static int __devinit ad193x_i2c_probe(struct i2c_client *client, 490 const struct i2c_device_id *id) 491 { 492 return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C); 493 } 494 495 static int __devexit ad193x_i2c_remove(struct i2c_client *client) 496 { 497 return ad193x_bus_remove(&client->dev); 498 } 499 500 static struct i2c_driver ad193x_i2c_driver = { 501 .driver = { 502 .name = "ad193x", 503 }, 504 .probe = ad193x_i2c_probe, 505 .remove = __devexit_p(ad193x_i2c_remove), 506 .id_table = ad193x_id, 507 }; 508 #endif 509 510 static int __init ad193x_modinit(void) 511 { 512 int ret; 513 514 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 515 ret = i2c_add_driver(&ad193x_i2c_driver); 516 if (ret != 0) { 517 printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n", 518 ret); 519 } 520 #endif 521 522 #if defined(CONFIG_SPI_MASTER) 523 ret = spi_register_driver(&ad193x_spi_driver); 524 if (ret != 0) { 525 printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n", 526 ret); 527 } 528 #endif 529 return ret; 530 } 531 module_init(ad193x_modinit); 532 533 static void __exit ad193x_modexit(void) 534 { 535 #if defined(CONFIG_SPI_MASTER) 536 spi_unregister_driver(&ad193x_spi_driver); 537 #endif 538 539 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 540 i2c_del_driver(&ad193x_i2c_driver); 541 #endif 542 } 543 module_exit(ad193x_modexit); 544 545 MODULE_DESCRIPTION("ASoC ad193x driver"); 546 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); 547 MODULE_LICENSE("GPL"); 548