release/src-rt-6.x.4708/linux/linux-2.6.36/sound/soc/codecs/ad193x.c

   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         unsigned int sysclk;
  28         struct snd_soc_codec codec;
  29         u8 reg_cache[AD193X_NUM_REGS];
  30 };
  31
  32 /* ad193x register cache & default register settings */
  33 static const u8 ad193x_reg[AD193X_NUM_REGS] = {
  34         0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
  35 };
  36
  37 static struct snd_soc_codec *ad193x_codec;
  38 struct snd_soc_codec_device soc_codec_dev_ad193x;
  39
  40 /*
  41  * AD193X volume/mute/de-emphasis etc. controls
  42  */
  43 static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
  44
  45 static const struct soc_enum ad193x_deemp_enum =
  46         SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp);
  47
  48 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
  49         /* DAC volume control */
  50         SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL,
  51                         AD193X_DAC_R1_VOL, 0, 0xFF, 1),
  52         SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL,
  53                         AD193X_DAC_R2_VOL, 0, 0xFF, 1),
  54         SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL,
  55                         AD193X_DAC_R3_VOL, 0, 0xFF, 1),
  56         SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL,
  57                         AD193X_DAC_R4_VOL, 0, 0xFF, 1),
  58
  59         /* ADC switch control */
  60         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
  61                 AD193X_ADCR1_MUTE, 1, 1),
  62         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
  63                 AD193X_ADCR2_MUTE, 1, 1),
  64
  65         /* DAC switch control */
  66         SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
  67                 AD193X_DACR1_MUTE, 1, 1),
  68         SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
  69                 AD193X_DACR2_MUTE, 1, 1),
  70         SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
  71                 AD193X_DACR3_MUTE, 1, 1),
  72         SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
  73                 AD193X_DACR4_MUTE, 1, 1),
  74
  75         /* ADC high-pass filter */
  76         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
  77                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
  78
  79         /* DAC de-emphasis */
  80         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
  81 };
  82
  83 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
  84         SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
  85         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
  86         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
  87         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
  88         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  89         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  90         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  91         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  92         SND_SOC_DAPM_INPUT("ADC1IN"),
  93         SND_SOC_DAPM_INPUT("ADC2IN"),
  94 };
  95
  96 static const struct snd_soc_dapm_route audio_paths[] = {
  97         { "DAC", NULL, "PLL_PWR" },
  98         { "ADC", NULL, "PLL_PWR" },
  99         { "DAC", NULL, "ADC_PWR" },
 100         { "ADC", NULL, "ADC_PWR" },
 101         { "DAC1OUT", "DAC1 Switch", "DAC" },
 102         { "DAC2OUT", "DAC2 Switch", "DAC" },
 103         { "DAC3OUT", "DAC3 Switch", "DAC" },
 104         { "DAC4OUT", "DAC4 Switch", "DAC" },
 105         { "ADC", "ADC1 Switch", "ADC1IN" },
 106         { "ADC", "ADC2 Switch", "ADC2IN" },
 107 };
 108
 109 /*
 110  * DAI ops entries
 111  */
 112
 113 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
 114 {
 115         struct snd_soc_codec *codec = dai->codec;
 116         int reg;
 117
 118         reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
 119         reg = (mute > 0) ? reg | AD193X_DAC_MASTER_MUTE : reg &
 120                 (~AD193X_DAC_MASTER_MUTE);
 121         snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
 122
 123         return 0;
 124 }
 125
 126 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 127                                unsigned int rx_mask, int slots, int width)
 128 {
 129         struct snd_soc_codec *codec = dai->codec;
 130         int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
 131         int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2);
 132
 133         dac_reg &= ~AD193X_DAC_CHAN_MASK;
 134         adc_reg &= ~AD193X_ADC_CHAN_MASK;
 135
 136         switch (slots) {
 137         case 2:
 138                 dac_reg |= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT;
 139                 adc_reg |= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT;
 140                 break;
 141         case 4:
 142                 dac_reg |= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT;
 143                 adc_reg |= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT;
 144                 break;
 145         case 8:
 146                 dac_reg |= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT;
 147                 adc_reg |= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT;
 148                 break;
 149         case 16:
 150                 dac_reg |= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT;
 151                 adc_reg |= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT;
 152                 break;
 153         default:
 154                 return -EINVAL;
 155         }
 156
 157         snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
 158         snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg);
 159
 160         return 0;
 161 }
 162
 163 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 164                 unsigned int fmt)
 165 {
 166         struct snd_soc_codec *codec = codec_dai->codec;
 167         int adc_reg1, adc_reg2, dac_reg;
 168
 169         adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1);
 170         adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2);
 171         dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1);
 172
 173         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 174          * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
 175          */
 176         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 177         case SND_SOC_DAIFMT_I2S:
 178                 adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
 179                 adc_reg1 |= AD193X_ADC_SERFMT_TDM;
 180                 break;
 181         case SND_SOC_DAIFMT_DSP_A:
 182                 adc_reg1 &= ~AD193X_ADC_SERFMT_MASK;
 183                 adc_reg1 |= AD193X_ADC_SERFMT_AUX;
 184                 break;
 185         default:
 186                 return -EINVAL;
 187         }
 188
 189         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 190         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 191                 adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
 192                 adc_reg2 &= ~AD193X_ADC_BCLK_INV;
 193                 dac_reg &= ~AD193X_DAC_LEFT_HIGH;
 194                 dac_reg &= ~AD193X_DAC_BCLK_INV;
 195                 break;
 196         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 197                 adc_reg2 |= AD193X_ADC_LEFT_HIGH;
 198                 adc_reg2 &= ~AD193X_ADC_BCLK_INV;
 199                 dac_reg |= AD193X_DAC_LEFT_HIGH;
 200                 dac_reg &= ~AD193X_DAC_BCLK_INV;
 201                 break;
 202         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 203                 adc_reg2 &= ~AD193X_ADC_LEFT_HIGH;
 204                 adc_reg2 |= AD193X_ADC_BCLK_INV;
 205                 dac_reg &= ~AD193X_DAC_LEFT_HIGH;
 206                 dac_reg |= AD193X_DAC_BCLK_INV;
 207                 break;
 208
 209         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 210                 adc_reg2 |= AD193X_ADC_LEFT_HIGH;
 211                 adc_reg2 |= AD193X_ADC_BCLK_INV;
 212                 dac_reg |= AD193X_DAC_LEFT_HIGH;
 213                 dac_reg |= AD193X_DAC_BCLK_INV;
 214                 break;
 215         default:
 216                 return -EINVAL;
 217         }
 218
 219         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 220         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
 221                 adc_reg2 |= AD193X_ADC_LCR_MASTER;
 222                 adc_reg2 |= AD193X_ADC_BCLK_MASTER;
 223                 dac_reg |= AD193X_DAC_LCR_MASTER;
 224                 dac_reg |= AD193X_DAC_BCLK_MASTER;
 225                 break;
 226         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
 227                 adc_reg2 |= AD193X_ADC_LCR_MASTER;
 228                 adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
 229                 dac_reg |= AD193X_DAC_LCR_MASTER;
 230                 dac_reg &= ~AD193X_DAC_BCLK_MASTER;
 231                 break;
 232         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
 233                 adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
 234                 adc_reg2 |= AD193X_ADC_BCLK_MASTER;
 235                 dac_reg &= ~AD193X_DAC_LCR_MASTER;
 236                 dac_reg |= AD193X_DAC_BCLK_MASTER;
 237                 break;
 238         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
 239                 adc_reg2 &= ~AD193X_ADC_LCR_MASTER;
 240                 adc_reg2 &= ~AD193X_ADC_BCLK_MASTER;
 241                 dac_reg &= ~AD193X_DAC_LCR_MASTER;
 242                 dac_reg &= ~AD193X_DAC_BCLK_MASTER;
 243                 break;
 244         default:
 245                 return -EINVAL;
 246         }
 247
 248         snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1);
 249         snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2);
 250         snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
 251
 252         return 0;
 253 }
 254
 255 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 256                 int clk_id, unsigned int freq, int dir)
 257 {
 258         struct snd_soc_codec *codec = codec_dai->codec;
 259         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 260         switch (freq) {
 261         case 12288000:
 262         case 18432000:
 263         case 24576000:
 264         case 36864000:
 265                 ad193x->sysclk = freq;
 266                 return 0;
 267         }
 268         return -EINVAL;
 269 }
 270
 271 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 272                 struct snd_pcm_hw_params *params,
 273                 struct snd_soc_dai *dai)
 274 {
 275         int word_len = 0, reg = 0, master_rate = 0;
 276
 277         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 278         struct snd_soc_device *socdev = rtd->socdev;
 279         struct snd_soc_codec *codec = socdev->card->codec;
 280         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 281
 282         /* bit size */
 283         switch (params_format(params)) {
 284         case SNDRV_PCM_FORMAT_S16_LE:
 285                 word_len = 3;
 286                 break;
 287         case SNDRV_PCM_FORMAT_S20_3LE:
 288                 word_len = 1;
 289                 break;
 290         case SNDRV_PCM_FORMAT_S24_LE:
 291         case SNDRV_PCM_FORMAT_S32_LE:
 292                 word_len = 0;
 293                 break;
 294         }
 295
 296         switch (ad193x->sysclk) {
 297         case 12288000:
 298                 master_rate = AD193X_PLL_INPUT_256;
 299                 break;
 300         case 18432000:
 301                 master_rate = AD193X_PLL_INPUT_384;
 302                 break;
 303         case 24576000:
 304                 master_rate = AD193X_PLL_INPUT_512;
 305                 break;
 306         case 36864000:
 307                 master_rate = AD193X_PLL_INPUT_768;
 308                 break;
 309         }
 310
 311         reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0);
 312         reg = (reg & AD193X_PLL_INPUT_MASK) | master_rate;
 313         snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg);
 314
 315         reg = snd_soc_read(codec, AD193X_DAC_CTRL2);
 316         reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len;
 317         snd_soc_write(codec, AD193X_DAC_CTRL2, reg);
 318
 319         reg = snd_soc_read(codec, AD193X_ADC_CTRL1);
 320         reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) | word_len;
 321         snd_soc_write(codec, AD193X_ADC_CTRL1, reg);
 322
 323         return 0;
 324 }
 325
 326 static int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type)
 327 {
 328         struct snd_soc_codec *codec;
 329         struct ad193x_priv *ad193x;
 330         int ret;
 331
 332         if (ad193x_codec) {
 333                 dev_err(dev, "Another ad193x is registered\n");
 334                 return -EINVAL;
 335         }
 336
 337         ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
 338         if (ad193x == NULL)
 339                 return -ENOMEM;
 340
 341         dev_set_drvdata(dev, ad193x);
 342
 343         codec = &ad193x->codec;
 344         mutex_init(&codec->mutex);
 345         codec->control_data = ctrl_data;
 346         codec->dev = dev;
 347         snd_soc_codec_set_drvdata(codec, ad193x);
 348         codec->reg_cache = ad193x->reg_cache;
 349         codec->reg_cache_size = AD193X_NUM_REGS;
 350         codec->name = "AD193X";
 351         codec->owner = THIS_MODULE;
 352         codec->dai = &ad193x_dai;
 353         codec->num_dai = 1;
 354         INIT_LIST_HEAD(&codec->dapm_widgets);
 355         INIT_LIST_HEAD(&codec->dapm_paths);
 356
 357         ad193x_dai.dev = codec->dev;
 358         ad193x_codec = codec;
 359
 360         memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS);
 361
 362         if (bus_type == SND_SOC_I2C)
 363                 ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type);
 364         else
 365                 ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type);
 366         if (ret < 0) {
 367                 dev_err(codec->dev, "failed to set cache I/O: %d\n",
 368                                 ret);
 369                 kfree(ad193x);
 370                 return ret;
 371         }
 372
 373         /* default setting for ad193x */
 374
 375         /* unmute dac channels */
 376         snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0);
 377         /* de-emphasis: 48kHz, powedown dac */
 378         snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A);
 379         /* powerdown dac, dac in tdm mode */
 380         snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41);
 381         /* high-pass filter enable */
 382         snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3);
 383         /* sata delay=1, adc aux mode */
 384         snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43);
 385         /* pll input: mclki/xi */
 386         snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
 387         snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04);
 388         ad193x->sysclk = 12288000;
 389
 390         ret = snd_soc_register_codec(codec);
 391         if (ret != 0) {
 392                 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
 393                 kfree(ad193x);
 394                 return ret;
 395         }
 396
 397         ret = snd_soc_register_dai(&ad193x_dai);
 398         if (ret != 0) {
 399                 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
 400                 snd_soc_unregister_codec(codec);
 401                 kfree(ad193x);
 402                 return ret;
 403         }
 404
 405         return 0;
 406 }
 407
 408 static int ad193x_bus_remove(struct device *dev)
 409 {
 410         struct ad193x_priv *ad193x = dev_get_drvdata(dev);
 411
 412         snd_soc_unregister_dai(&ad193x_dai);
 413         snd_soc_unregister_codec(&ad193x->codec);
 414         kfree(ad193x);
 415         ad193x_codec = NULL;
 416
 417         return 0;
 418 }
 419
 420 static struct snd_soc_dai_ops ad193x_dai_ops = {
 421         .hw_params = ad193x_hw_params,
 422         .digital_mute = ad193x_mute,
 423         .set_tdm_slot = ad193x_set_tdm_slot,
 424         .set_sysclk     = ad193x_set_dai_sysclk,
 425         .set_fmt = ad193x_set_dai_fmt,
 426 };
 427
 428 /* codec DAI instance */
 429 struct snd_soc_dai ad193x_dai = {
 430         .name = "AD193X",
 431         .playback = {
 432                 .stream_name = "Playback",
 433                 .channels_min = 2,
 434                 .channels_max = 8,
 435                 .rates = SNDRV_PCM_RATE_48000,
 436                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 437                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 438         },
 439         .capture = {
 440                 .stream_name = "Capture",
 441                 .channels_min = 2,
 442                 .channels_max = 4,
 443                 .rates = SNDRV_PCM_RATE_48000,
 444                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 445                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 446         },
 447         .ops = &ad193x_dai_ops,
 448 };
 449 EXPORT_SYMBOL_GPL(ad193x_dai);
 450
 451 static int ad193x_probe(struct platform_device *pdev)
 452 {
 453         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 454         struct snd_soc_codec *codec;
 455         int ret = 0;
 456
 457         if (ad193x_codec == NULL) {
 458                 dev_err(&pdev->dev, "Codec device not registered\n");
 459                 return -ENODEV;
 460         }
 461
 462         socdev->card->codec = ad193x_codec;
 463         codec = ad193x_codec;
 464
 465         /* register pcms */
 466         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
 467         if (ret < 0) {
 468                 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
 469                 goto pcm_err;
 470         }
 471
 472         snd_soc_add_controls(codec, ad193x_snd_controls,
 473                              ARRAY_SIZE(ad193x_snd_controls));
 474         snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets,
 475                                   ARRAY_SIZE(ad193x_dapm_widgets));
 476         snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
 477
 478 pcm_err:
 479         return ret;
 480 }
 481
 482 /* power down chip */
 483 static int ad193x_remove(struct platform_device *pdev)
 484 {
 485         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
 486
 487         snd_soc_free_pcms(socdev);
 488         snd_soc_dapm_free(socdev);
 489
 490         return 0;
 491 }
 492
 493 struct snd_soc_codec_device soc_codec_dev_ad193x = {
 494         .probe =        ad193x_probe,
 495         .remove =       ad193x_remove,
 496 };
 497 EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x);
 498
 499 #if defined(CONFIG_SPI_MASTER)
 500 static int __devinit ad193x_spi_probe(struct spi_device *spi)
 501 {
 502         return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI);
 503 }
 504
 505 static int __devexit ad193x_spi_remove(struct spi_device *spi)
 506 {
 507         return ad193x_bus_remove(&spi->dev);
 508 }
 509
 510 static struct spi_driver ad193x_spi_driver = {
 511         .driver = {
 512                 .name   = "ad193x",
 513                 .owner  = THIS_MODULE,
 514         },
 515         .probe          = ad193x_spi_probe,
 516         .remove         = __devexit_p(ad193x_spi_remove),
 517 };
 518 #endif
 519
 520 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 521 static const struct i2c_device_id ad193x_id[] = {
 522         { "ad1936", 0 },
 523         { "ad1937", 0 },
 524         { }
 525 };
 526 MODULE_DEVICE_TABLE(i2c, ad193x_id);
 527
 528 static int __devinit ad193x_i2c_probe(struct i2c_client *client,
 529                 const struct i2c_device_id *id)
 530 {
 531         return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C);
 532 }
 533
 534 static int __devexit ad193x_i2c_remove(struct i2c_client *client)
 535 {
 536         return ad193x_bus_remove(&client->dev);
 537 }
 538
 539 static struct i2c_driver ad193x_i2c_driver = {
 540         .driver = {
 541                 .name = "ad193x",
 542         },
 543         .probe    = ad193x_i2c_probe,
 544         .remove   = __devexit_p(ad193x_i2c_remove),
 545         .id_table = ad193x_id,
 546 };
 547 #endif
 548
 549 static int __init ad193x_modinit(void)
 550 {
 551         int ret;
 552
 553 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 554         ret =  i2c_add_driver(&ad193x_i2c_driver);
 555         if (ret != 0) {
 556                 printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n",
 557                                 ret);
 558         }
 559 #endif
 560
 561 #if defined(CONFIG_SPI_MASTER)
 562         ret = spi_register_driver(&ad193x_spi_driver);
 563         if (ret != 0) {
 564                 printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n",
 565                                 ret);
 566         }
 567 #endif
 568         return ret;
 569 }
 570 module_init(ad193x_modinit);
 571
 572 static void __exit ad193x_modexit(void)
 573 {
 574 #if defined(CONFIG_SPI_MASTER)
 575         spi_unregister_driver(&ad193x_spi_driver);
 576 #endif
 577
 578 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 579         i2c_del_driver(&ad193x_i2c_driver);
 580 #endif
 581 }
 582 module_exit(ad193x_modexit);
 583
 584 MODULE_DESCRIPTION("ASoC ad193x driver");
 585 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 586 MODULE_LICENSE("GPL");