sound/soc/codecs/adau1701.c

   1 /*
   2  * Driver for ADAU1701 SigmaDSP processor
   3  *
   4  * Copyright 2011 Analog Devices Inc.
   5  * Author: Lars-Peter Clausen <lars@metafoo.de>
   6  *      based on an inital version by Cliff Cai <cliff.cai@analog.com>
   7  *
   8  * Licensed under the GPL-2 or later.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/init.h>
  13 #include <linux/i2c.h>
  14 #include <linux/delay.h>
  15 #include <linux/slab.h>
  16 #include <linux/of.h>
  17 #include <linux/of_gpio.h>
  18 #include <linux/of_device.h>
  19 #include <linux/regmap.h>
  20 #include <sound/core.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/soc.h>
  24
  25 #include "sigmadsp.h"
  26 #include "adau1701.h"
  27
  28 #define ADAU1701_DSPCTRL        0x081c
  29 #define ADAU1701_SEROCTL        0x081e
  30 #define ADAU1701_SERICTL        0x081f
  31
  32 #define ADAU1701_AUXNPOW        0x0822
  33 #define ADAU1701_PINCONF_0      0x0820
  34 #define ADAU1701_PINCONF_1      0x0821
  35 #define ADAU1701_AUXNPOW        0x0822
  36
  37 #define ADAU1701_OSCIPOW        0x0826
  38 #define ADAU1701_DACSET         0x0827
  39
  40 #define ADAU1701_MAX_REGISTER   0x0828
  41
  42 #define ADAU1701_DSPCTRL_CR             (1 << 2)
  43 #define ADAU1701_DSPCTRL_DAM            (1 << 3)
  44 #define ADAU1701_DSPCTRL_ADM            (1 << 4)
  45 #define ADAU1701_DSPCTRL_SR_48          0x00
  46 #define ADAU1701_DSPCTRL_SR_96          0x01
  47 #define ADAU1701_DSPCTRL_SR_192         0x02
  48 #define ADAU1701_DSPCTRL_SR_MASK        0x03
  49
  50 #define ADAU1701_SEROCTL_INV_LRCLK      0x2000
  51 #define ADAU1701_SEROCTL_INV_BCLK       0x1000
  52 #define ADAU1701_SEROCTL_MASTER         0x0800
  53
  54 #define ADAU1701_SEROCTL_OBF16          0x0000
  55 #define ADAU1701_SEROCTL_OBF8           0x0200
  56 #define ADAU1701_SEROCTL_OBF4           0x0400
  57 #define ADAU1701_SEROCTL_OBF2           0x0600
  58 #define ADAU1701_SEROCTL_OBF_MASK       0x0600
  59
  60 #define ADAU1701_SEROCTL_OLF1024        0x0000
  61 #define ADAU1701_SEROCTL_OLF512         0x0080
  62 #define ADAU1701_SEROCTL_OLF256         0x0100
  63 #define ADAU1701_SEROCTL_OLF_MASK       0x0180
  64
  65 #define ADAU1701_SEROCTL_MSB_DEALY1     0x0000
  66 #define ADAU1701_SEROCTL_MSB_DEALY0     0x0004
  67 #define ADAU1701_SEROCTL_MSB_DEALY8     0x0008
  68 #define ADAU1701_SEROCTL_MSB_DEALY12    0x000c
  69 #define ADAU1701_SEROCTL_MSB_DEALY16    0x0010
  70 #define ADAU1701_SEROCTL_MSB_DEALY_MASK 0x001c
  71
  72 #define ADAU1701_SEROCTL_WORD_LEN_24    0x0000
  73 #define ADAU1701_SEROCTL_WORD_LEN_20    0x0001
  74 #define ADAU1701_SEROCTL_WORD_LEN_16    0x0010
  75 #define ADAU1701_SEROCTL_WORD_LEN_MASK  0x0003
  76
  77 #define ADAU1701_AUXNPOW_VBPD           0x40
  78 #define ADAU1701_AUXNPOW_VRPD           0x20
  79
  80 #define ADAU1701_SERICTL_I2S            0
  81 #define ADAU1701_SERICTL_LEFTJ          1
  82 #define ADAU1701_SERICTL_TDM            2
  83 #define ADAU1701_SERICTL_RIGHTJ_24      3
  84 #define ADAU1701_SERICTL_RIGHTJ_20      4
  85 #define ADAU1701_SERICTL_RIGHTJ_18      5
  86 #define ADAU1701_SERICTL_RIGHTJ_16      6
  87 #define ADAU1701_SERICTL_MODE_MASK      7
  88 #define ADAU1701_SERICTL_INV_BCLK       BIT(3)
  89 #define ADAU1701_SERICTL_INV_LRCLK      BIT(4)
  90
  91 #define ADAU1701_OSCIPOW_OPD            0x04
  92 #define ADAU1701_DACSET_DACINIT         1
  93
  94 #define ADAU1707_CLKDIV_UNSET           (-1U)
  95
  96 #define ADAU1701_FIRMWARE "adau1701.bin"
  97
  98 struct adau1701 {
  99         int gpio_nreset;
 100         int gpio_pll_mode[2];
 101         unsigned int dai_fmt;
 102         unsigned int pll_clkdiv;
 103         unsigned int sysclk;
 104         struct regmap *regmap;
 105         u8 pin_config[12];
 106 };
 107
 108 static const struct snd_kcontrol_new adau1701_controls[] = {
 109         SOC_SINGLE("Master Capture Switch", ADAU1701_DSPCTRL, 4, 1, 0),
 110 };
 111
 112 static const struct snd_soc_dapm_widget adau1701_dapm_widgets[] = {
 113         SND_SOC_DAPM_DAC("DAC0", "Playback", ADAU1701_AUXNPOW, 3, 1),
 114         SND_SOC_DAPM_DAC("DAC1", "Playback", ADAU1701_AUXNPOW, 2, 1),
 115         SND_SOC_DAPM_DAC("DAC2", "Playback", ADAU1701_AUXNPOW, 1, 1),
 116         SND_SOC_DAPM_DAC("DAC3", "Playback", ADAU1701_AUXNPOW, 0, 1),
 117         SND_SOC_DAPM_ADC("ADC", "Capture", ADAU1701_AUXNPOW, 7, 1),
 118
 119         SND_SOC_DAPM_OUTPUT("OUT0"),
 120         SND_SOC_DAPM_OUTPUT("OUT1"),
 121         SND_SOC_DAPM_OUTPUT("OUT2"),
 122         SND_SOC_DAPM_OUTPUT("OUT3"),
 123         SND_SOC_DAPM_INPUT("IN0"),
 124         SND_SOC_DAPM_INPUT("IN1"),
 125 };
 126
 127 static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
 128         { "OUT0", NULL, "DAC0" },
 129         { "OUT1", NULL, "DAC1" },
 130         { "OUT2", NULL, "DAC2" },
 131         { "OUT3", NULL, "DAC3" },
 132
 133         { "ADC", NULL, "IN0" },
 134         { "ADC", NULL, "IN1" },
 135 };
 136
 137 static unsigned int adau1701_register_size(struct device *dev,
 138                 unsigned int reg)
 139 {
 140         switch (reg) {
 141         case ADAU1701_PINCONF_0:
 142         case ADAU1701_PINCONF_1:
 143                 return 3;
 144         case ADAU1701_DSPCTRL:
 145         case ADAU1701_SEROCTL:
 146         case ADAU1701_AUXNPOW:
 147         case ADAU1701_OSCIPOW:
 148         case ADAU1701_DACSET:
 149                 return 2;
 150         case ADAU1701_SERICTL:
 151                 return 1;
 152         }
 153
 154         dev_err(dev, "Unsupported register address: %d\n", reg);
 155         return 0;
 156 }
 157
 158 static bool adau1701_volatile_reg(struct device *dev, unsigned int reg)
 159 {
 160         switch (reg) {
 161         case ADAU1701_DACSET:
 162                 return true;
 163         default:
 164                 return false;
 165         }
 166 }
 167
 168 static int adau1701_reg_write(void *context, unsigned int reg,
 169                               unsigned int value)
 170 {
 171         struct i2c_client *client = context;
 172         unsigned int i;
 173         unsigned int size;
 174         uint8_t buf[5];
 175         int ret;
 176
 177         size = adau1701_register_size(&client->dev, reg);
 178         if (size == 0)
 179                 return -EINVAL;
 180
 181         buf[0] = reg >> 8;
 182         buf[1] = reg & 0xff;
 183
 184         for (i = size + 1; i >= 2; --i) {
 185                 buf[i] = value;
 186                 value >>= 8;
 187         }
 188
 189         ret = i2c_master_send(client, buf, size + 2);
 190         if (ret == size + 2)
 191                 return 0;
 192         else if (ret < 0)
 193                 return ret;
 194         else
 195                 return -EIO;
 196 }
 197
 198 static int adau1701_reg_read(void *context, unsigned int reg,
 199                              unsigned int *value)
 200 {
 201         int ret;
 202         unsigned int i;
 203         unsigned int size;
 204         uint8_t send_buf[2], recv_buf[3];
 205         struct i2c_client *client = context;
 206         struct i2c_msg msgs[2];
 207
 208         size = adau1701_register_size(&client->dev, reg);
 209         if (size == 0)
 210                 return -EINVAL;
 211
 212         send_buf[0] = reg >> 8;
 213         send_buf[1] = reg & 0xff;
 214
 215         msgs[0].addr = client->addr;
 216         msgs[0].len = sizeof(send_buf);
 217         msgs[0].buf = send_buf;
 218         msgs[0].flags = 0;
 219
 220         msgs[1].addr = client->addr;
 221         msgs[1].len = size;
 222         msgs[1].buf = recv_buf;
 223         msgs[1].flags = I2C_M_RD;
 224
 225         ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
 226         if (ret < 0)
 227                 return ret;
 228         else if (ret != ARRAY_SIZE(msgs))
 229                 return -EIO;
 230
 231         *value = 0;
 232
 233         for (i = 0; i < size; i++)
 234                 *value |= recv_buf[i] << (i * 8);
 235
 236         return 0;
 237 }
 238
 239 static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv)
 240 {
 241         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 242         struct i2c_client *client = to_i2c_client(codec->dev);
 243         int ret;
 244
 245         if (clkdiv != ADAU1707_CLKDIV_UNSET &&
 246             gpio_is_valid(adau1701->gpio_pll_mode[0]) &&
 247             gpio_is_valid(adau1701->gpio_pll_mode[1])) {
 248                 switch (clkdiv) {
 249                 case 64:
 250                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 0);
 251                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 0);
 252                         break;
 253                 case 256:
 254                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 0);
 255                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 1);
 256                         break;
 257                 case 384:
 258                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 1);
 259                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 0);
 260                         break;
 261                 case 0: /* fallback */
 262                 case 512:
 263                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 1);
 264                         gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 1);
 265                         break;
 266                 }
 267         }
 268
 269         adau1701->pll_clkdiv = clkdiv;
 270
 271         if (gpio_is_valid(adau1701->gpio_nreset)) {
 272                 gpio_set_value_cansleep(adau1701->gpio_nreset, 0);
 273                 /* minimum reset time is 20ns */
 274                 udelay(1);
 275                 gpio_set_value_cansleep(adau1701->gpio_nreset, 1);
 276                 /* power-up time may be as long as 85ms */
 277                 mdelay(85);
 278         }
 279
 280         /*
 281          * Postpone the firmware download to a point in time when we
 282          * know the correct PLL setup
 283          */
 284         if (clkdiv != ADAU1707_CLKDIV_UNSET) {
 285                 ret = process_sigma_firmware(client, ADAU1701_FIRMWARE);
 286                 if (ret) {
 287                         dev_warn(codec->dev, "Failed to load firmware\n");
 288                         return ret;
 289                 }
 290         }
 291
 292         regmap_write(adau1701->regmap, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
 293         regmap_write(adau1701->regmap, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
 294
 295         regcache_mark_dirty(adau1701->regmap);
 296         regcache_sync(adau1701->regmap);
 297
 298         return 0;
 299 }
 300
 301 static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec,
 302                 snd_pcm_format_t format)
 303 {
 304         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 305         unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK;
 306         unsigned int val;
 307
 308         switch (format) {
 309         case SNDRV_PCM_FORMAT_S16_LE:
 310                 val = ADAU1701_SEROCTL_WORD_LEN_16;
 311                 break;
 312         case SNDRV_PCM_FORMAT_S20_3LE:
 313                 val = ADAU1701_SEROCTL_WORD_LEN_20;
 314                 break;
 315         case SNDRV_PCM_FORMAT_S24_LE:
 316                 val = ADAU1701_SEROCTL_WORD_LEN_24;
 317                 break;
 318         default:
 319                 return -EINVAL;
 320         }
 321
 322         if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) {
 323                 switch (format) {
 324                 case SNDRV_PCM_FORMAT_S16_LE:
 325                         val |= ADAU1701_SEROCTL_MSB_DEALY16;
 326                         break;
 327                 case SNDRV_PCM_FORMAT_S20_3LE:
 328                         val |= ADAU1701_SEROCTL_MSB_DEALY12;
 329                         break;
 330                 case SNDRV_PCM_FORMAT_S24_LE:
 331                         val |= ADAU1701_SEROCTL_MSB_DEALY8;
 332                         break;
 333                 }
 334                 mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK;
 335         }
 336
 337         regmap_update_bits(adau1701->regmap, ADAU1701_SEROCTL, mask, val);
 338
 339         return 0;
 340 }
 341
 342 static int adau1701_set_playback_pcm_format(struct snd_soc_codec *codec,
 343                         snd_pcm_format_t format)
 344 {
 345         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 346         unsigned int val;
 347
 348         if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
 349                 return 0;
 350
 351         switch (format) {
 352         case SNDRV_PCM_FORMAT_S16_LE:
 353                 val = ADAU1701_SERICTL_RIGHTJ_16;
 354                 break;
 355         case SNDRV_PCM_FORMAT_S20_3LE:
 356                 val = ADAU1701_SERICTL_RIGHTJ_20;
 357                 break;
 358         case SNDRV_PCM_FORMAT_S24_LE:
 359                 val = ADAU1701_SERICTL_RIGHTJ_24;
 360                 break;
 361         default:
 362                 return -EINVAL;
 363         }
 364
 365         regmap_update_bits(adau1701->regmap, ADAU1701_SERICTL,
 366                 ADAU1701_SERICTL_MODE_MASK, val);
 367
 368         return 0;
 369 }
 370
 371 static int adau1701_hw_params(struct snd_pcm_substream *substream,
 372                 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 373 {
 374         struct snd_soc_codec *codec = dai->codec;
 375         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 376         unsigned int clkdiv = adau1701->sysclk / params_rate(params);
 377         snd_pcm_format_t format;
 378         unsigned int val;
 379         int ret;
 380
 381         /*
 382          * If the mclk/lrclk ratio changes, the chip needs updated PLL
 383          * mode GPIO settings, and a full reset cycle, including a new
 384          * firmware upload.
 385          */
 386         if (clkdiv != adau1701->pll_clkdiv) {
 387                 ret = adau1701_reset(codec, clkdiv);
 388                 if (ret < 0)
 389                         return ret;
 390         }
 391
 392         switch (params_rate(params)) {
 393         case 192000:
 394                 val = ADAU1701_DSPCTRL_SR_192;
 395                 break;
 396         case 96000:
 397                 val = ADAU1701_DSPCTRL_SR_96;
 398                 break;
 399         case 48000:
 400                 val = ADAU1701_DSPCTRL_SR_48;
 401                 break;
 402         default:
 403                 return -EINVAL;
 404         }
 405
 406         regmap_update_bits(adau1701->regmap, ADAU1701_DSPCTRL,
 407                 ADAU1701_DSPCTRL_SR_MASK, val);
 408
 409         format = params_format(params);
 410         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 411                 return adau1701_set_playback_pcm_format(codec, format);
 412         else
 413                 return adau1701_set_capture_pcm_format(codec, format);
 414 }
 415
 416 static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
 417                 unsigned int fmt)
 418 {
 419         struct snd_soc_codec *codec = codec_dai->codec;
 420         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 421         unsigned int serictl = 0x00, seroctl = 0x00;
 422         bool invert_lrclk;
 423
 424         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 425         case SND_SOC_DAIFMT_CBM_CFM:
 426                 /* master, 64-bits per sample, 1 frame per sample */
 427                 seroctl |= ADAU1701_SEROCTL_MASTER | ADAU1701_SEROCTL_OBF16
 428                                 | ADAU1701_SEROCTL_OLF1024;
 429                 break;
 430         case SND_SOC_DAIFMT_CBS_CFS:
 431                 break;
 432         default:
 433                 return -EINVAL;
 434         }
 435
 436         /* clock inversion */
 437         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 438         case SND_SOC_DAIFMT_NB_NF:
 439                 invert_lrclk = false;
 440                 break;
 441         case SND_SOC_DAIFMT_NB_IF:
 442                 invert_lrclk = true;
 443                 break;
 444         case SND_SOC_DAIFMT_IB_NF:
 445                 invert_lrclk = false;
 446                 serictl |= ADAU1701_SERICTL_INV_BCLK;
 447                 seroctl |= ADAU1701_SEROCTL_INV_BCLK;
 448                 break;
 449         case SND_SOC_DAIFMT_IB_IF:
 450                 invert_lrclk = true;
 451                 serictl |= ADAU1701_SERICTL_INV_BCLK;
 452                 seroctl |= ADAU1701_SEROCTL_INV_BCLK;
 453                 break;
 454         default:
 455                 return -EINVAL;
 456         }
 457
 458         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 459         case SND_SOC_DAIFMT_I2S:
 460                 break;
 461         case SND_SOC_DAIFMT_LEFT_J:
 462                 serictl |= ADAU1701_SERICTL_LEFTJ;
 463                 seroctl |= ADAU1701_SEROCTL_MSB_DEALY0;
 464                 invert_lrclk = !invert_lrclk;
 465                 break;
 466         case SND_SOC_DAIFMT_RIGHT_J:
 467                 serictl |= ADAU1701_SERICTL_RIGHTJ_24;
 468                 seroctl |= ADAU1701_SEROCTL_MSB_DEALY8;
 469                 invert_lrclk = !invert_lrclk;
 470                 break;
 471         default:
 472                 return -EINVAL;
 473         }
 474
 475         if (invert_lrclk) {
 476                 seroctl |= ADAU1701_SEROCTL_INV_LRCLK;
 477                 serictl |= ADAU1701_SERICTL_INV_LRCLK;
 478         }
 479
 480         adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
 481
 482         regmap_write(adau1701->regmap, ADAU1701_SERICTL, serictl);
 483         regmap_update_bits(adau1701->regmap, ADAU1701_SEROCTL,
 484                 ~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl);
 485
 486         return 0;
 487 }
 488
 489 static int adau1701_set_bias_level(struct snd_soc_codec *codec,
 490                 enum snd_soc_bias_level level)
 491 {
 492         unsigned int mask = ADAU1701_AUXNPOW_VBPD | ADAU1701_AUXNPOW_VRPD;
 493         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 494
 495         switch (level) {
 496         case SND_SOC_BIAS_ON:
 497                 break;
 498         case SND_SOC_BIAS_PREPARE:
 499                 break;
 500         case SND_SOC_BIAS_STANDBY:
 501                 /* Enable VREF and VREF buffer */
 502                 regmap_update_bits(adau1701->regmap,
 503                                    ADAU1701_AUXNPOW, mask, 0x00);
 504                 break;
 505         case SND_SOC_BIAS_OFF:
 506                 /* Disable VREF and VREF buffer */
 507                 regmap_update_bits(adau1701->regmap,
 508                                    ADAU1701_AUXNPOW, mask, mask);
 509                 break;
 510         }
 511
 512         codec->dapm.bias_level = level;
 513         return 0;
 514 }
 515
 516 static int adau1701_digital_mute(struct snd_soc_dai *dai, int mute)
 517 {
 518         struct snd_soc_codec *codec = dai->codec;
 519         unsigned int mask = ADAU1701_DSPCTRL_DAM;
 520         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 521         unsigned int val;
 522
 523         if (mute)
 524                 val = 0;
 525         else
 526                 val = mask;
 527
 528         regmap_update_bits(adau1701->regmap, ADAU1701_DSPCTRL, mask, val);
 529
 530         return 0;
 531 }
 532
 533 static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
 534         int source, unsigned int freq, int dir)
 535 {
 536         unsigned int val;
 537         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 538
 539         switch (clk_id) {
 540         case ADAU1701_CLK_SRC_OSC:
 541                 val = 0x0;
 542                 break;
 543         case ADAU1701_CLK_SRC_MCLK:
 544                 val = ADAU1701_OSCIPOW_OPD;
 545                 break;
 546         default:
 547                 return -EINVAL;
 548         }
 549
 550         regmap_update_bits(adau1701->regmap, ADAU1701_OSCIPOW,
 551                            ADAU1701_OSCIPOW_OPD, val);
 552         adau1701->sysclk = freq;
 553
 554         return 0;
 555 }
 556
 557 #define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
 558         SNDRV_PCM_RATE_192000)
 559
 560 #define ADAU1701_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 561         SNDRV_PCM_FMTBIT_S24_LE)
 562
 563 static const struct snd_soc_dai_ops adau1701_dai_ops = {
 564         .set_fmt        = adau1701_set_dai_fmt,
 565         .hw_params      = adau1701_hw_params,
 566         .digital_mute   = adau1701_digital_mute,
 567 };
 568
 569 static struct snd_soc_dai_driver adau1701_dai = {
 570         .name = "adau1701",
 571         .playback = {
 572                 .stream_name = "Playback",
 573                 .channels_min = 2,
 574                 .channels_max = 8,
 575                 .rates = ADAU1701_RATES,
 576                 .formats = ADAU1701_FORMATS,
 577         },
 578         .capture = {
 579                 .stream_name = "Capture",
 580                 .channels_min = 2,
 581                 .channels_max = 8,
 582                 .rates = ADAU1701_RATES,
 583                 .formats = ADAU1701_FORMATS,
 584         },
 585         .ops = &adau1701_dai_ops,
 586         .symmetric_rates = 1,
 587 };
 588
 589 #ifdef CONFIG_OF
 590 static const struct of_device_id adau1701_dt_ids[] = {
 591         { .compatible = "adi,adau1701", },
 592         { }
 593 };
 594 MODULE_DEVICE_TABLE(of, adau1701_dt_ids);
 595 #endif
 596
 597 static int adau1701_probe(struct snd_soc_codec *codec)
 598 {
 599         int i, ret;
 600         unsigned int val;
 601         struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
 602
 603         /*
 604          * Let the pll_clkdiv variable default to something that won't happen
 605          * at runtime. That way, we can postpone the firmware download from
 606          * adau1701_reset() to a point in time when we know the correct PLL
 607          * mode parameters.
 608          */
 609         adau1701->pll_clkdiv = ADAU1707_CLKDIV_UNSET;
 610
 611         /* initalize with pre-configured pll mode settings */
 612         ret = adau1701_reset(codec, adau1701->pll_clkdiv);
 613         if (ret < 0)
 614                 return ret;
 615
 616         /* set up pin config */
 617         val = 0;
 618         for (i = 0; i < 6; i++)
 619                 val |= adau1701->pin_config[i] << (i * 4);
 620
 621         regmap_write(adau1701->regmap, ADAU1701_PINCONF_0, val);
 622
 623         val = 0;
 624         for (i = 0; i < 6; i++)
 625                 val |= adau1701->pin_config[i + 6] << (i * 4);
 626
 627         regmap_write(adau1701->regmap, ADAU1701_PINCONF_1, val);
 628
 629         return 0;
 630 }
 631
 632 static struct snd_soc_codec_driver adau1701_codec_drv = {
 633         .probe                  = adau1701_probe,
 634         .set_bias_level         = adau1701_set_bias_level,
 635         .idle_bias_off          = true,
 636
 637         .controls               = adau1701_controls,
 638         .num_controls           = ARRAY_SIZE(adau1701_controls),
 639         .dapm_widgets           = adau1701_dapm_widgets,
 640         .num_dapm_widgets       = ARRAY_SIZE(adau1701_dapm_widgets),
 641         .dapm_routes            = adau1701_dapm_routes,
 642         .num_dapm_routes        = ARRAY_SIZE(adau1701_dapm_routes),
 643
 644         .set_sysclk             = adau1701_set_sysclk,
 645 };
 646
 647 static const struct regmap_config adau1701_regmap = {
 648         .reg_bits               = 16,
 649         .val_bits               = 32,
 650         .max_register           = ADAU1701_MAX_REGISTER,
 651         .cache_type             = REGCACHE_RBTREE,
 652         .volatile_reg           = adau1701_volatile_reg,
 653         .reg_write              = adau1701_reg_write,
 654         .reg_read               = adau1701_reg_read,
 655 };
 656
 657 static int adau1701_i2c_probe(struct i2c_client *client,
 658                               const struct i2c_device_id *id)
 659 {
 660         struct adau1701 *adau1701;
 661         struct device *dev = &client->dev;
 662         int gpio_nreset = -EINVAL;
 663         int gpio_pll_mode[2] = { -EINVAL, -EINVAL };
 664         int ret;
 665
 666         adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL);
 667         if (!adau1701)
 668                 return -ENOMEM;
 669
 670         adau1701->regmap = devm_regmap_init(dev, NULL, client,
 671                                             &adau1701_regmap);
 672         if (IS_ERR(adau1701->regmap))
 673                 return PTR_ERR(adau1701->regmap);
 674
 675         if (dev->of_node) {
 676                 gpio_nreset = of_get_named_gpio(dev->of_node, "reset-gpio", 0);
 677                 if (gpio_nreset < 0 && gpio_nreset != -ENOENT)
 678                         return gpio_nreset;
 679
 680                 gpio_pll_mode[0] = of_get_named_gpio(dev->of_node,
 681                                                    "adi,pll-mode-gpios", 0);
 682                 if (gpio_pll_mode[0] < 0 && gpio_pll_mode[0] != -ENOENT)
 683                         return gpio_pll_mode[0];
 684
 685                 gpio_pll_mode[1] = of_get_named_gpio(dev->of_node,
 686                                                    "adi,pll-mode-gpios", 1);
 687                 if (gpio_pll_mode[1] < 0 && gpio_pll_mode[1] != -ENOENT)
 688                         return gpio_pll_mode[1];
 689
 690                 of_property_read_u32(dev->of_node, "adi,pll-clkdiv",
 691                                      &adau1701->pll_clkdiv);
 692
 693                 of_property_read_u8_array(dev->of_node, "adi,pin-config",
 694                                           adau1701->pin_config,
 695                                           ARRAY_SIZE(adau1701->pin_config));
 696         }
 697
 698         if (gpio_is_valid(gpio_nreset)) {
 699                 ret = devm_gpio_request_one(dev, gpio_nreset, GPIOF_OUT_INIT_LOW,
 700                                             "ADAU1701 Reset");
 701                 if (ret < 0)
 702                         return ret;
 703         }
 704
 705         if (gpio_is_valid(gpio_pll_mode[0]) &&
 706             gpio_is_valid(gpio_pll_mode[1])) {
 707                 ret = devm_gpio_request_one(dev, gpio_pll_mode[0],
 708                                             GPIOF_OUT_INIT_LOW,
 709                                             "ADAU1701 PLL mode 0");
 710                 if (ret < 0)
 711                         return ret;
 712
 713                 ret = devm_gpio_request_one(dev, gpio_pll_mode[1],
 714                                             GPIOF_OUT_INIT_LOW,
 715                                             "ADAU1701 PLL mode 1");
 716                 if (ret < 0)
 717                         return ret;
 718         }
 719
 720         adau1701->gpio_nreset = gpio_nreset;
 721         adau1701->gpio_pll_mode[0] = gpio_pll_mode[0];
 722         adau1701->gpio_pll_mode[1] = gpio_pll_mode[1];
 723
 724         i2c_set_clientdata(client, adau1701);
 725         ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
 726                         &adau1701_dai, 1);
 727         return ret;
 728 }
 729
 730 static int adau1701_i2c_remove(struct i2c_client *client)
 731 {
 732         snd_soc_unregister_codec(&client->dev);
 733         return 0;
 734 }
 735
 736 static const struct i2c_device_id adau1701_i2c_id[] = {
 737         { "adau1401", 0 },
 738         { "adau1401a", 0 },
 739         { "adau1701", 0 },
 740         { "adau1702", 0 },
 741         { }
 742 };
 743 MODULE_DEVICE_TABLE(i2c, adau1701_i2c_id);
 744
 745 static struct i2c_driver adau1701_i2c_driver = {
 746         .driver = {
 747                 .name   = "adau1701",
 748                 .owner  = THIS_MODULE,
 749                 .of_match_table = of_match_ptr(adau1701_dt_ids),
 750         },
 751         .probe          = adau1701_i2c_probe,
 752         .remove         = adau1701_i2c_remove,
 753         .id_table       = adau1701_i2c_id,
 754 };
 755
 756 module_i2c_driver(adau1701_i2c_driver);
 757
 758 MODULE_DESCRIPTION("ASoC ADAU1701 SigmaDSP driver");
 759 MODULE_AUTHOR("Cliff Cai <cliff.cai@analog.com>");
 760 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 761 MODULE_LICENSE("GPL");