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", SND_SOC_NOPM, 0, 0),
  76         SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
  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_VMID("VMID"),
  82         SND_SOC_DAPM_OUTPUT("DAC1OUT"),
  83         SND_SOC_DAPM_OUTPUT("DAC2OUT"),
  84         SND_SOC_DAPM_OUTPUT("DAC3OUT"),
  85         SND_SOC_DAPM_OUTPUT("DAC4OUT"),
  86         SND_SOC_DAPM_INPUT("ADC1IN"),
  87         SND_SOC_DAPM_INPUT("ADC2IN"),
  88 };
  89
  90 static const struct snd_soc_dapm_route audio_paths[] = {
  91         { "DAC", NULL, "SYSCLK" },
  92         { "DAC Output", NULL, "DAC" },
  93         { "DAC Output", NULL, "VMID" },
  94         { "ADC", NULL, "SYSCLK" },
  95         { "DAC", NULL, "ADC_PWR" },
  96         { "ADC", NULL, "ADC_PWR" },
  97         { "DAC1OUT", NULL, "DAC Output" },
  98         { "DAC2OUT", NULL, "DAC Output" },
  99         { "DAC3OUT", NULL, "DAC Output" },
 100         { "DAC4OUT", NULL, "DAC Output" },
 101         { "ADC", NULL, "ADC1IN" },
 102         { "ADC", NULL, "ADC2IN" },
 103         { "SYSCLK", NULL, "PLL_PWR" },
 104 };
 105
 106 /*
 107  * DAI ops entries
 108  */
 109
 110 static int ad193x_mute(struct snd_soc_dai *dai, int mute)
 111 {
 112         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 113
 114         if (mute)
 115                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 116                                     AD193X_DAC_MASTER_MUTE,
 117                                     AD193X_DAC_MASTER_MUTE);
 118         else
 119                 regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 120                                     AD193X_DAC_MASTER_MUTE, 0);
 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 ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
 129         unsigned int channels;
 130
 131         switch (slots) {
 132         case 2:
 133                 channels = AD193X_2_CHANNELS;
 134                 break;
 135         case 4:
 136                 channels = AD193X_4_CHANNELS;
 137                 break;
 138         case 8:
 139                 channels = AD193X_8_CHANNELS;
 140                 break;
 141         case 16:
 142                 channels = AD193X_16_CHANNELS;
 143                 break;
 144         default:
 145                 return -EINVAL;
 146         }
 147
 148         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 149                 AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
 150         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 151                 AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
 152
 153         return 0;
 154 }
 155
 156 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
 157                 unsigned int fmt)
 158 {
 159         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
 160         unsigned int adc_serfmt = 0;
 161         unsigned int adc_fmt = 0;
 162         unsigned int dac_fmt = 0;
 163
 164         /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
 165          * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
 166          */
 167         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 168         case SND_SOC_DAIFMT_I2S:
 169                 adc_serfmt |= AD193X_ADC_SERFMT_TDM;
 170                 break;
 171         case SND_SOC_DAIFMT_DSP_A:
 172                 adc_serfmt |= AD193X_ADC_SERFMT_AUX;
 173                 break;
 174         default:
 175                 return -EINVAL;
 176         }
 177
 178         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 179         case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
 180                 break;
 181         case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
 182                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 183                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 184                 break;
 185         case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
 186                 adc_fmt |= AD193X_ADC_BCLK_INV;
 187                 dac_fmt |= AD193X_DAC_BCLK_INV;
 188                 break;
 189         case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
 190                 adc_fmt |= AD193X_ADC_LEFT_HIGH;
 191                 adc_fmt |= AD193X_ADC_BCLK_INV;
 192                 dac_fmt |= AD193X_DAC_LEFT_HIGH;
 193                 dac_fmt |= AD193X_DAC_BCLK_INV;
 194                 break;
 195         default:
 196                 return -EINVAL;
 197         }
 198
 199         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 200         case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
 201                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 202                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 203                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 204                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 205                 break;
 206         case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
 207                 adc_fmt |= AD193X_ADC_LCR_MASTER;
 208                 dac_fmt |= AD193X_DAC_LCR_MASTER;
 209                 break;
 210         case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
 211                 adc_fmt |= AD193X_ADC_BCLK_MASTER;
 212                 dac_fmt |= AD193X_DAC_BCLK_MASTER;
 213                 break;
 214         case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
 215                 break;
 216         default:
 217                 return -EINVAL;
 218         }
 219
 220         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 221                 AD193X_ADC_SERFMT_MASK, adc_serfmt);
 222         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
 223                 AD193X_ADC_FMT_MASK, adc_fmt);
 224         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
 225                 AD193X_DAC_FMT_MASK, dac_fmt);
 226
 227         return 0;
 228 }
 229
 230 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 231                 int clk_id, unsigned int freq, int dir)
 232 {
 233         struct snd_soc_codec *codec = codec_dai->codec;
 234         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 235         switch (freq) {
 236         case 12288000:
 237         case 18432000:
 238         case 24576000:
 239         case 36864000:
 240                 ad193x->sysclk = freq;
 241                 return 0;
 242         }
 243         return -EINVAL;
 244 }
 245
 246 static int ad193x_hw_params(struct snd_pcm_substream *substream,
 247                 struct snd_pcm_hw_params *params,
 248                 struct snd_soc_dai *dai)
 249 {
 250         int word_len = 0, master_rate = 0;
 251         struct snd_soc_codec *codec = dai->codec;
 252         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 253
 254         /* bit size */
 255         switch (params_width(params)) {
 256         case 16:
 257                 word_len = 3;
 258                 break;
 259         case 20:
 260                 word_len = 1;
 261                 break;
 262         case 24:
 263         case 32:
 264                 word_len = 0;
 265                 break;
 266         }
 267
 268         switch (ad193x->sysclk) {
 269         case 12288000:
 270                 master_rate = AD193X_PLL_INPUT_256;
 271                 break;
 272         case 18432000:
 273                 master_rate = AD193X_PLL_INPUT_384;
 274                 break;
 275         case 24576000:
 276                 master_rate = AD193X_PLL_INPUT_512;
 277                 break;
 278         case 36864000:
 279                 master_rate = AD193X_PLL_INPUT_768;
 280                 break;
 281         }
 282
 283         regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
 284                             AD193X_PLL_INPUT_MASK, master_rate);
 285
 286         regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
 287                             AD193X_DAC_WORD_LEN_MASK,
 288                             word_len << AD193X_DAC_WORD_LEN_SHFT);
 289
 290         regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
 291                             AD193X_ADC_WORD_LEN_MASK, word_len);
 292
 293         return 0;
 294 }
 295
 296 static const struct snd_soc_dai_ops ad193x_dai_ops = {
 297         .hw_params = ad193x_hw_params,
 298         .digital_mute = ad193x_mute,
 299         .set_tdm_slot = ad193x_set_tdm_slot,
 300         .set_sysclk     = ad193x_set_dai_sysclk,
 301         .set_fmt = ad193x_set_dai_fmt,
 302 };
 303
 304 /* codec DAI instance */
 305 static struct snd_soc_dai_driver ad193x_dai = {
 306         .name = "ad193x-hifi",
 307         .playback = {
 308                 .stream_name = "Playback",
 309                 .channels_min = 2,
 310                 .channels_max = 8,
 311                 .rates = SNDRV_PCM_RATE_48000,
 312                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 313                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 314         },
 315         .capture = {
 316                 .stream_name = "Capture",
 317                 .channels_min = 2,
 318                 .channels_max = 4,
 319                 .rates = SNDRV_PCM_RATE_48000,
 320                 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
 321                         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
 322         },
 323         .ops = &ad193x_dai_ops,
 324 };
 325
 326 static int ad193x_codec_probe(struct snd_soc_codec *codec)
 327 {
 328         struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
 329
 330         /* default setting for ad193x */
 331
 332         /* unmute dac channels */
 333         regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
 334         /* de-emphasis: 48kHz, powedown dac */
 335         regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
 336         /* dac in tdm mode */
 337         regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
 338         /* high-pass filter enable */
 339         regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
 340         /* sata delay=1, adc aux mode */
 341         regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
 342         /* pll input: mclki/xi */
 343         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
 344         regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
 345
 346         return 0;
 347 }
 348
 349 static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
 350         .probe = ad193x_codec_probe,
 351         .controls = ad193x_snd_controls,
 352         .num_controls = ARRAY_SIZE(ad193x_snd_controls),
 353         .dapm_widgets = ad193x_dapm_widgets,
 354         .num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
 355         .dapm_routes = audio_paths,
 356         .num_dapm_routes = ARRAY_SIZE(audio_paths),
 357 };
 358
 359 static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
 360 {
 361         return false;
 362 }
 363
 364 const struct regmap_config ad193x_regmap_config = {
 365         .max_register = AD193X_NUM_REGS - 1,
 366         .volatile_reg = adau193x_reg_volatile,
 367 };
 368 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
 369
 370 int ad193x_probe(struct device *dev, struct regmap *regmap)
 371 {
 372         struct ad193x_priv *ad193x;
 373
 374         if (IS_ERR(regmap))
 375                 return PTR_ERR(regmap);
 376
 377         ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
 378         if (ad193x == NULL)
 379                 return -ENOMEM;
 380
 381         ad193x->regmap = regmap;
 382
 383         dev_set_drvdata(dev, ad193x);
 384
 385         return snd_soc_register_codec(dev, &soc_codec_dev_ad193x,
 386                 &ad193x_dai, 1);
 387 }
 388 EXPORT_SYMBOL_GPL(ad193x_probe);
 389
 390 MODULE_DESCRIPTION("ASoC ad193x driver");
 391 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 392 MODULE_LICENSE("GPL");