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/module.h>
  10 #include <linux/kernel.h>
  11 #include <linux/device.h>
  12 #include <linux/regmap.h>
  13 #include <linux/slab.h>
  14 #include <sound/core.h>
  15 #include <sound/pcm.h>
  16 #include <sound/pcm_params.h>
  17 #include <sound/initval.h>
  18 #include <sound/soc.h>
  19 #include <sound/tlv.h>
  20
  21 #include "ad193x.h"
  22
  23 /* codec private data */
  24 struct ad193x_priv {
  25         struct regmap *regmap;
  26         int sysclk;
  27 };
  28
  29 /*
  30  * AD193X volume/mute/de-emphasis etc. controls
  31  */
  32 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
  33
  34 static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
  35                             ad193x_deemp);
  36
  37 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
  38
  39 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
  40         /* DAC volume control */
  41         SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
  42                         AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
  43         SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
  44                         AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
  45         SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
  46                         AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
  47         SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
  48                         AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
  49
  50         /* ADC switch control */
  51         SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
  52                 AD193X_ADCR1_MUTE, 1, 1),
  53         SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
  54                 AD193X_ADCR2_MUTE, 1, 1),
  55
  56         /* DAC switch control */
  57         SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
  58                 AD193X_DACR1_MUTE, 1, 1),
  59         SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
  60                 AD193X_DACR2_MUTE, 1, 1),
  61         SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
  62                 AD193X_DACR3_MUTE, 1, 1),
  63         SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
  64                 AD193X_DACR4_MUTE, 1, 1),
  65
  66         /* ADC high-pass filter */
  67         SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
  68                         AD193X_ADC_HIGHPASS_FILTER, 1, 0),
  69
  70         /* DAC de-emphasis */
  71         SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
  72 };
  73
  74 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
  75         SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1),
  76         SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
  77         SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
  78         SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
  79         SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
  80         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  81         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  82         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  83         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  84         SND_SOC_DAPM_INPUT("ADC1IN"),
  85         SND_SOC_DAPM_INPUT("ADC2IN"),
  86 };
  87
  88 static const struct snd_soc_dapm_route audio_paths[] = {
  89         { "DAC", NULL, "SYSCLK" },
  90         { "ADC", NULL, "SYSCLK" },
  91         { "DAC", NULL, "ADC_PWR" },
  92         { "ADC", NULL, "ADC_PWR" },
  93         { "DAC1OUT", NULL, "DAC" },
  94         { "DAC2OUT", NULL, "DAC" },
  95         { "DAC3OUT", NULL, "DAC" },
  96         { "DAC4OUT", NULL, "DAC" },
  97         { "ADC", NULL, "ADC1IN" },
  98         { "ADC", NULL, "ADC2IN" },
  99         { "SYSCLK", NULL, "PLL_PWR" },
 100 };
 101
 102 /*
 103  * DAI ops entries
 104  */
 105
 106 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
 107 {
 108         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 109
 110         if (mute)
 111                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 112                                     AD193X_DAC_MASTER_MUTE,
 113                                     AD193X_DAC_MASTER_MUTE);
 114         else
 115                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 116                                     AD193X_DAC_MASTER_MUTE, 0);
 117
 118         return 0;
 119 }
 120
 121 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 122                                unsigned int rx_mask, int slots, int width)
 123 {
 124         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 125         unsigned int channels;
 126
 127         switch (slots) {
 128         case 2:
 129                 channels = AD193X_2_CHANNELS;
 130                 break;
 131         case 4:
 132                 channels = AD193X_4_CHANNELS;
 133                 break;
 134         case 8:
 135                 channels = AD193X_8_CHANNELS;
 136                 break;
 137         case 16:
 138                 channels = AD193X_16_CHANNELS;
 139                 break;
 140         default:
 141                 return -EINVAL;
 142         }
 143
 144         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 145                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
 146         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 147                 AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
 148
 149         return 0;
 150 }
 151
 152 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 153                 unsigned int fmt)
 154 {
 155         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
 156         unsigned int adc_serfmt = 0;
 157         unsigned int adc_fmt = 0;
 158         unsigned int dac_fmt = 0;
 159
 160         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 161          * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
 162          */
 163         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 164         case SND_SOC_DAIFMT_I2S:
 165                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
 166                 break;
 167         case SND_SOC_DAIFMT_DSP_A:
 168                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
 169                 break;
 170         default:
 171                 return -EINVAL;
 172         }
 173
 174         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 175         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 176                 break;
 177         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 178                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 179                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 180                 break;
 181         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 182                 adc_fmt |= AD193X_ADC_BCLK_INV;
 183                 dac_fmt |= AD193X_DAC_BCLK_INV;
 184                 break;
 185         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 186                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 187                 adc_fmt |= AD193X_ADC_BCLK_INV;
 188                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 189                 dac_fmt |= AD193X_DAC_BCLK_INV;
 190                 break;
 191         default:
 192                 return -EINVAL;
 193         }
 194
 195         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 196         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
 197                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 198                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 199                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 200                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 201                 break;
 202         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
 203                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 204                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 205                 break;
 206         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
 207                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 208                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 209                 break;
 210         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
 211                 break;
 212         default:
 213                 return -EINVAL;
 214         }
 215
 216         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 217                 AD193X_ADC_SERFMT_MASK, adc_serfmt);
 218         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 219                 AD193X_ADC_FMT_MASK, adc_fmt);
 220         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 221                 AD193X_DAC_FMT_MASK, dac_fmt);
 222
 223         return 0;
 224 }
 225
 226 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 227                 int clk_id, unsigned int freq, int dir)
 228 {
 229         struct snd_soc_codec *codec = codec_dai->codec;
 230         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 231         switch (freq) {
 232         case 12288000:
 233         case 18432000:
 234         case 24576000:
 235         case 36864000:
 236                 ad193x->sysclk = freq;
 237                 return 0;
 238         }
 239         return -EINVAL;
 240 }
 241
 242 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 243                 struct snd_pcm_hw_params *params,
 244                 struct snd_soc_dai *dai)
 245 {
 246         int word_len = 0, master_rate = 0;
 247         struct snd_soc_codec *codec = dai->codec;
 248         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 249
 250         /* bit size */
 251         switch (params_width(params)) {
 252         case 16:
 253                 word_len = 3;
 254                 break;
 255         case 20:
 256                 word_len = 1;
 257                 break;
 258         case 24:
 259         case 32:
 260                 word_len = 0;
 261                 break;
 262         }
 263
 264         switch (ad193x->sysclk) {
 265         case 12288000:
 266                 master_rate = AD193X_PLL_INPUT_256;
 267                 break;
 268         case 18432000:
 269                 master_rate = AD193X_PLL_INPUT_384;
 270                 break;
 271         case 24576000:
 272                 master_rate = AD193X_PLL_INPUT_512;
 273                 break;
 274         case 36864000:
 275                 master_rate = AD193X_PLL_INPUT_768;
 276                 break;
 277         }
 278
 279         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
 280                             AD193X_PLL_INPUT_MASK, master_rate);
 281
 282         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 283                             AD193X_DAC_WORD_LEN_MASK,
 284                             word_len << AD193X_DAC_WORD_LEN_SHFT);
 285
 286         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 287                             AD193X_ADC_WORD_LEN_MASK, word_len);
 288
 289         return 0;
 290 }
 291
 292 static const struct snd_soc_dai_ops ad193x_dai_ops = {
 293         .hw_params = ad193x_hw_params,
 294         .digital_mute = ad193x_mute,
 295         .set_tdm_slot = ad193x_set_tdm_slot,
 296         .set_sysclk     = ad193x_set_dai_sysclk,
 297         .set_fmt = ad193x_set_dai_fmt,
 298 };
 299
 300 /* codec DAI instance */
 301 static struct snd_soc_dai_driver ad193x_dai = {
 302         .name = "ad193x-hifi",
 303         .playback = {
 304                 .stream_name = "Playback",
 305                 .channels_min = 2,
 306                 .channels_max = 8,
 307                 .rates = SNDRV_PCM_RATE_48000,
 308                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 309                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 310         },
 311         .capture = {
 312                 .stream_name = "Capture",
 313                 .channels_min = 2,
 314                 .channels_max = 4,
 315                 .rates = SNDRV_PCM_RATE_48000,
 316                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 317                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 318         },
 319         .ops = &ad193x_dai_ops,
 320 };
 321
 322 static int ad193x_codec_probe(struct snd_soc_codec *codec)
 323 {
 324         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 325         int ret;
 326
 327         codec->control_data = ad193x->regmap;
 328         ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
 329         if (ret < 0) {
 330                 dev_err(codec->dev, "failed to set cache I/O: %d\n", ret);
 331                 return ret;
 332         }
 333
 334         /* default setting for ad193x */
 335
 336         /* unmute dac channels */
 337         regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
 338         /* de-emphasis: 48kHz, powedown dac */
 339         regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
 340         /* powerdown dac, dac in tdm mode */
 341         regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x41);
 342         /* high-pass filter enable */
 343         regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
 344         /* sata delay=1, adc aux mode */
 345         regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
 346         /* pll input: mclki/xi */
 347         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
 348         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
 349
 350         return ret;
 351 }
 352
 353 static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 354         .probe = ad193x_codec_probe,
 355         .controls = ad193x_snd_controls,
 356         .num_controls = ARRAY_SIZE(ad193x_snd_controls),
 357         .dapm_widgets = ad193x_dapm_widgets,
 358         .num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
 359         .dapm_routes = audio_paths,
 360         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 361 };
 362
 363 static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
 364 {
 365         return false;
 366 }
 367
 368 const struct regmap_config ad193x_regmap_config = {
 369         .max_register = AD193X_NUM_REGS - 1,
 370         .volatile_reg = adau193x_reg_volatile,
 371 };
 372 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
 373
 374 int ad193x_probe(struct device *dev, struct regmap *regmap)
 375 {
 376         struct ad193x_priv *ad193x;
 377
 378         if (IS_ERR(regmap))
 379                 return PTR_ERR(regmap);
 380
 381         ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
 382         if (ad193x == NULL)
 383                 return -ENOMEM;
 384
 385         ad193x->regmap = regmap;
 386
 387         dev_set_drvdata(dev, ad193x);
 388
 389         return snd_soc_register_codec(dev, &soc_codec_dev_ad193x,
 390                 &ad193x_dai, 1);
 391 }
 392 EXPORT_SYMBOL_GPL(ad193x_probe);
 393
 394 MODULE_DESCRIPTION("ASoC ad193x driver");
 395 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 396 MODULE_LICENSE("GPL");