linux/sound/soc/codecs/ak4613.c
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   1// SPDX-License-Identifier: GPL-2.0
   2//
   3// ak4613.c  --  Asahi Kasei ALSA Soc Audio driver
   4//
   5// Copyright (C) 2015 Renesas Electronics Corporation
   6// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   7//
   8// Based on ak4642.c by Kuninori Morimoto
   9// Based on wm8731.c by Richard Purdie
  10// Based on ak4535.c by Richard Purdie
  11// Based on wm8753.c by Liam Girdwood
  12
  13#include <linux/clk.h>
  14#include <linux/delay.h>
  15#include <linux/i2c.h>
  16#include <linux/slab.h>
  17#include <linux/of_device.h>
  18#include <linux/module.h>
  19#include <linux/regmap.h>
  20#include <sound/soc.h>
  21#include <sound/pcm_params.h>
  22#include <sound/tlv.h>
  23
  24#define PW_MGMT1        0x00 /* Power Management 1 */
  25#define PW_MGMT2        0x01 /* Power Management 2 */
  26#define PW_MGMT3        0x02 /* Power Management 3 */
  27#define CTRL1           0x03 /* Control 1 */
  28#define CTRL2           0x04 /* Control 2 */
  29#define DEMP1           0x05 /* De-emphasis1 */
  30#define DEMP2           0x06 /* De-emphasis2 */
  31#define OFD             0x07 /* Overflow Detect */
  32#define ZRD             0x08 /* Zero Detect */
  33#define ICTRL           0x09 /* Input Control */
  34#define OCTRL           0x0a /* Output Control */
  35#define LOUT1           0x0b /* LOUT1 Volume Control */
  36#define ROUT1           0x0c /* ROUT1 Volume Control */
  37#define LOUT2           0x0d /* LOUT2 Volume Control */
  38#define ROUT2           0x0e /* ROUT2 Volume Control */
  39#define LOUT3           0x0f /* LOUT3 Volume Control */
  40#define ROUT3           0x10 /* ROUT3 Volume Control */
  41#define LOUT4           0x11 /* LOUT4 Volume Control */
  42#define ROUT4           0x12 /* ROUT4 Volume Control */
  43#define LOUT5           0x13 /* LOUT5 Volume Control */
  44#define ROUT5           0x14 /* ROUT5 Volume Control */
  45#define LOUT6           0x15 /* LOUT6 Volume Control */
  46#define ROUT6           0x16 /* ROUT6 Volume Control */
  47
  48/* PW_MGMT1 */
  49#define RSTN            BIT(0)
  50#define PMDAC           BIT(1)
  51#define PMADC           BIT(2)
  52#define PMVR            BIT(3)
  53
  54/* PW_MGMT2 */
  55#define PMAD_ALL        0x7
  56
  57/* PW_MGMT3 */
  58#define PMDA_ALL        0x3f
  59
  60/* CTRL1 */
  61#define DIF0            BIT(3)
  62#define DIF1            BIT(4)
  63#define DIF2            BIT(5)
  64#define TDM0            BIT(6)
  65#define TDM1            BIT(7)
  66#define NO_FMT          (0xff)
  67#define FMT_MASK        (0xf8)
  68
  69/* CTRL2 */
  70#define DFS_MASK                (3 << 2)
  71#define DFS_NORMAL_SPEED        (0 << 2)
  72#define DFS_DOUBLE_SPEED        (1 << 2)
  73#define DFS_QUAD_SPEED          (2 << 2)
  74
  75/* ICTRL */
  76#define ICTRL_MASK      (0x3)
  77
  78/* OCTRL */
  79#define OCTRL_MASK      (0x3F)
  80
  81struct ak4613_formats {
  82        unsigned int width;
  83        unsigned int fmt;
  84};
  85
  86struct ak4613_interface {
  87        struct ak4613_formats capture;
  88        struct ak4613_formats playback;
  89};
  90
  91struct ak4613_priv {
  92        struct mutex lock;
  93        const struct ak4613_interface *iface;
  94        struct snd_pcm_hw_constraint_list constraint;
  95        struct work_struct dummy_write_work;
  96        struct snd_soc_component *component;
  97        unsigned int rate;
  98        unsigned int sysclk;
  99
 100        unsigned int fmt;
 101        u8 oc;
 102        u8 ic;
 103        int cnt;
 104};
 105
 106/*
 107 * Playback Volume
 108 *
 109 * max : 0x00 : 0 dB
 110 *       ( 0.5 dB step )
 111 * min : 0xFE : -127.0 dB
 112 * mute: 0xFF
 113 */
 114static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
 115
 116static const struct snd_kcontrol_new ak4613_snd_controls[] = {
 117        SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
 118                         0, 0xFF, 1, out_tlv),
 119        SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
 120                         0, 0xFF, 1, out_tlv),
 121        SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
 122                         0, 0xFF, 1, out_tlv),
 123        SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
 124                         0, 0xFF, 1, out_tlv),
 125        SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
 126                         0, 0xFF, 1, out_tlv),
 127        SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
 128                         0, 0xFF, 1, out_tlv),
 129};
 130
 131static const struct reg_default ak4613_reg[] = {
 132        { 0x0,  0x0f }, { 0x1,  0x07 }, { 0x2,  0x3f }, { 0x3,  0x20 },
 133        { 0x4,  0x20 }, { 0x5,  0x55 }, { 0x6,  0x05 }, { 0x7,  0x07 },
 134        { 0x8,  0x0f }, { 0x9,  0x07 }, { 0xa,  0x3f }, { 0xb,  0x00 },
 135        { 0xc,  0x00 }, { 0xd,  0x00 }, { 0xe,  0x00 }, { 0xf,  0x00 },
 136        { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
 137        { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
 138};
 139
 140#define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3)
 141#define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt }
 142static const struct ak4613_interface ak4613_iface[] = {
 143        /* capture */                           /* playback */
 144        /* [0] - [2] are not supported */
 145        [3] = { AUDIO_IFACE(24, LEFT_J),        AUDIO_IFACE(24, LEFT_J) },
 146        [4] = { AUDIO_IFACE(24, I2S),           AUDIO_IFACE(24, I2S) },
 147};
 148
 149static const struct regmap_config ak4613_regmap_cfg = {
 150        .reg_bits               = 8,
 151        .val_bits               = 8,
 152        .max_register           = 0x16,
 153        .reg_defaults           = ak4613_reg,
 154        .num_reg_defaults       = ARRAY_SIZE(ak4613_reg),
 155        .cache_type             = REGCACHE_RBTREE,
 156};
 157
 158static const struct of_device_id ak4613_of_match[] = {
 159        { .compatible = "asahi-kasei,ak4613",   .data = &ak4613_regmap_cfg },
 160        {},
 161};
 162MODULE_DEVICE_TABLE(of, ak4613_of_match);
 163
 164static const struct i2c_device_id ak4613_i2c_id[] = {
 165        { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
 166        { }
 167};
 168MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
 169
 170static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
 171
 172        /* Outputs */
 173        SND_SOC_DAPM_OUTPUT("LOUT1"),
 174        SND_SOC_DAPM_OUTPUT("LOUT2"),
 175        SND_SOC_DAPM_OUTPUT("LOUT3"),
 176        SND_SOC_DAPM_OUTPUT("LOUT4"),
 177        SND_SOC_DAPM_OUTPUT("LOUT5"),
 178        SND_SOC_DAPM_OUTPUT("LOUT6"),
 179
 180        SND_SOC_DAPM_OUTPUT("ROUT1"),
 181        SND_SOC_DAPM_OUTPUT("ROUT2"),
 182        SND_SOC_DAPM_OUTPUT("ROUT3"),
 183        SND_SOC_DAPM_OUTPUT("ROUT4"),
 184        SND_SOC_DAPM_OUTPUT("ROUT5"),
 185        SND_SOC_DAPM_OUTPUT("ROUT6"),
 186
 187        /* Inputs */
 188        SND_SOC_DAPM_INPUT("LIN1"),
 189        SND_SOC_DAPM_INPUT("LIN2"),
 190
 191        SND_SOC_DAPM_INPUT("RIN1"),
 192        SND_SOC_DAPM_INPUT("RIN2"),
 193
 194        /* DAC */
 195        SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
 196        SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
 197        SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
 198        SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
 199        SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
 200        SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
 201
 202        /* ADC */
 203        SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
 204        SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
 205};
 206
 207static const struct snd_soc_dapm_route ak4613_intercon[] = {
 208        {"LOUT1", NULL, "DAC1"},
 209        {"LOUT2", NULL, "DAC2"},
 210        {"LOUT3", NULL, "DAC3"},
 211        {"LOUT4", NULL, "DAC4"},
 212        {"LOUT5", NULL, "DAC5"},
 213        {"LOUT6", NULL, "DAC6"},
 214
 215        {"ROUT1", NULL, "DAC1"},
 216        {"ROUT2", NULL, "DAC2"},
 217        {"ROUT3", NULL, "DAC3"},
 218        {"ROUT4", NULL, "DAC4"},
 219        {"ROUT5", NULL, "DAC5"},
 220        {"ROUT6", NULL, "DAC6"},
 221
 222        {"DAC1", NULL, "Playback"},
 223        {"DAC2", NULL, "Playback"},
 224        {"DAC3", NULL, "Playback"},
 225        {"DAC4", NULL, "Playback"},
 226        {"DAC5", NULL, "Playback"},
 227        {"DAC6", NULL, "Playback"},
 228
 229        {"Capture", NULL, "ADC1"},
 230        {"Capture", NULL, "ADC2"},
 231
 232        {"ADC1", NULL, "LIN1"},
 233        {"ADC2", NULL, "LIN2"},
 234
 235        {"ADC1", NULL, "RIN1"},
 236        {"ADC2", NULL, "RIN2"},
 237};
 238
 239static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
 240                               struct snd_soc_dai *dai)
 241{
 242        struct snd_soc_component *component = dai->component;
 243        struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
 244        struct device *dev = component->dev;
 245
 246        mutex_lock(&priv->lock);
 247        priv->cnt--;
 248        if (priv->cnt < 0) {
 249                dev_err(dev, "unexpected counter error\n");
 250                priv->cnt = 0;
 251        }
 252        if (!priv->cnt)
 253                priv->iface = NULL;
 254        mutex_unlock(&priv->lock);
 255}
 256
 257static void ak4613_hw_constraints(struct ak4613_priv *priv,
 258                                  struct snd_pcm_runtime *runtime)
 259{
 260        static const unsigned int ak4613_rates[] = {
 261                 32000,
 262                 44100,
 263                 48000,
 264                 64000,
 265                 88200,
 266                 96000,
 267                176400,
 268                192000,
 269        };
 270        struct snd_pcm_hw_constraint_list *constraint = &priv->constraint;
 271        unsigned int fs;
 272        int i;
 273
 274        constraint->list        = ak4613_rates;
 275        constraint->mask        = 0;
 276        constraint->count       = 0;
 277
 278        /*
 279         * Slave Mode
 280         *      Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
 281         *      Double: [64kHz, 96kHz] : 256fs
 282         *      Quad  : [128kHz,192kHz]: 128fs
 283         *
 284         * Master mode
 285         *      Normal: [32kHz, 48kHz] : 256fs or 512fs
 286         *      Double: [64kHz, 96kHz] : 256fs
 287         *      Quad  : [128kHz,192kHz]: 128fs
 288        */
 289        for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
 290                /* minimum fs on each range */
 291                fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
 292
 293                if (priv->sysclk >= ak4613_rates[i] * fs)
 294                        constraint->count = i + 1;
 295        }
 296
 297        snd_pcm_hw_constraint_list(runtime, 0,
 298                                SNDRV_PCM_HW_PARAM_RATE, constraint);
 299}
 300
 301static int ak4613_dai_startup(struct snd_pcm_substream *substream,
 302                              struct snd_soc_dai *dai)
 303{
 304        struct snd_soc_component *component = dai->component;
 305        struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
 306
 307        priv->cnt++;
 308
 309        ak4613_hw_constraints(priv, substream->runtime);
 310
 311        return 0;
 312}
 313
 314static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
 315                                 int clk_id, unsigned int freq, int dir)
 316{
 317        struct snd_soc_component *component = codec_dai->component;
 318        struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
 319
 320        priv->sysclk = freq;
 321
 322        return 0;
 323}
 324
 325static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 326{
 327        struct snd_soc_component *component = dai->component;
 328        struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
 329
 330        fmt &= SND_SOC_DAIFMT_FORMAT_MASK;
 331
 332        switch (fmt) {
 333        case SND_SOC_DAIFMT_LEFT_J:
 334        case SND_SOC_DAIFMT_I2S:
 335                priv->fmt = fmt;
 336                break;
 337        default:
 338                return -EINVAL;
 339        }
 340
 341        return 0;
 342}
 343
 344static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface,
 345                                    int is_play,
 346                                    unsigned int fmt, unsigned int width)
 347{
 348        const struct ak4613_formats *fmts;
 349
 350        fmts = (is_play) ? &iface->playback : &iface->capture;
 351
 352        if (fmts->fmt != fmt)
 353                return false;
 354
 355        if (fmts->width != width)
 356                return false;
 357
 358        return true;
 359}
 360
 361static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
 362                                struct snd_pcm_hw_params *params,
 363                                struct snd_soc_dai *dai)
 364{
 365        struct snd_soc_component *component = dai->component;
 366        struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
 367        const struct ak4613_interface *iface;
 368        struct device *dev = component->dev;
 369        unsigned int width = params_width(params);
 370        unsigned int fmt = priv->fmt;
 371        unsigned int rate;
 372        int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 373        int i, ret;
 374        u8 fmt_ctrl, ctrl2;
 375
 376        rate = params_rate(params);
 377        switch (rate) {
 378        case 32000:
 379        case 44100:
 380        case 48000:
 381                ctrl2 = DFS_NORMAL_SPEED;
 382                break;
 383        case 64000:
 384        case 88200:
 385        case 96000:
 386                ctrl2 = DFS_DOUBLE_SPEED;
 387                break;
 388        case 176400:
 389        case 192000:
 390                ctrl2 = DFS_QUAD_SPEED;
 391                break;
 392        default:
 393                return -EINVAL;
 394        }
 395        priv->rate = rate;
 396
 397        /*
 398         * FIXME
 399         *
 400         * It doesn't support TDM at this point
 401         */
 402        fmt_ctrl = NO_FMT;
 403        ret = -EINVAL;
 404        iface = NULL;
 405
 406        mutex_lock(&priv->lock);
 407        if (priv->iface) {
 408                if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width))
 409                        iface = priv->iface;
 410        } else {
 411                for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
 412                        if (!ak4613_dai_fmt_matching(ak4613_iface + i,
 413                                                     is_play,
 414                                                     fmt, width))
 415                                continue;
 416                        iface = ak4613_iface + i;
 417                        break;
 418                }
 419        }
 420
 421        if ((priv->iface == NULL) ||
 422            (priv->iface == iface)) {
 423                priv->iface = iface;
 424                ret = 0;
 425        }
 426        mutex_unlock(&priv->lock);
 427
 428        if (ret < 0)
 429                goto hw_params_end;
 430
 431        fmt_ctrl = AUDIO_IFACE_TO_VAL(iface);
 432
 433        snd_soc_component_update_bits(component, CTRL1, FMT_MASK, fmt_ctrl);
 434        snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
 435
 436        snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
 437        snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
 438
 439hw_params_end:
 440        if (ret < 0)
 441                dev_warn(dev, "unsupported data width/format combination\n");
 442
 443        return ret;
 444}
 445
 446static int ak4613_set_bias_level(struct snd_soc_component *component,
 447                                 enum snd_soc_bias_level level)
 448{
 449        u8 mgmt1 = 0;
 450
 451        switch (level) {
 452        case SND_SOC_BIAS_ON:
 453                mgmt1 |= RSTN;
 454                fallthrough;
 455        case SND_SOC_BIAS_PREPARE:
 456                mgmt1 |= PMADC | PMDAC;
 457                fallthrough;
 458        case SND_SOC_BIAS_STANDBY:
 459                mgmt1 |= PMVR;
 460                fallthrough;
 461        case SND_SOC_BIAS_OFF:
 462        default:
 463                break;
 464        }
 465
 466        snd_soc_component_write(component, PW_MGMT1, mgmt1);
 467
 468        return 0;
 469}
 470
 471static void ak4613_dummy_write(struct work_struct *work)
 472{
 473        struct ak4613_priv *priv = container_of(work,
 474                                                struct ak4613_priv,
 475                                                dummy_write_work);
 476        struct snd_soc_component *component = priv->component;
 477        unsigned int mgmt1;
 478        unsigned int mgmt3;
 479
 480        /*
 481         * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
 482         *
 483         * Note
 484         *
 485         * To avoid extra delay, we want to avoid preemption here,
 486         * but we can't. Because it uses I2C access which is using IRQ
 487         * and sleep. Thus, delay might be more than 5 LR clocks
 488         * see also
 489         *      ak4613_dai_trigger()
 490         */
 491        udelay(5000000 / priv->rate);
 492
 493        mgmt1 = snd_soc_component_read(component, PW_MGMT1);
 494        mgmt3 = snd_soc_component_read(component, PW_MGMT3);
 495
 496        snd_soc_component_write(component, PW_MGMT1, mgmt1);
 497        snd_soc_component_write(component, PW_MGMT3, mgmt3);
 498}
 499
 500static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 501                              struct snd_soc_dai *dai)
 502{
 503        struct snd_soc_component *component = dai->component;
 504        struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
 505
 506        /*
 507         * FIXME
 508         *
 509         * PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
 510         * from Power Down Release. Otherwise, Playback volume will be 0dB.
 511         * To avoid complex multiple delay/dummy_write method from
 512         * ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
 513         * call it once here.
 514         *
 515         * But, unfortunately, we can't "write" here because here is atomic
 516         * context (It uses I2C access for writing).
 517         * Thus, use schedule_work() to switching to normal context
 518         * immediately.
 519         *
 520         * Note
 521         *
 522         * Calling ak4613_dummy_write() function might be delayed.
 523         * In such case, ak4613 volume might be temporarily 0dB when
 524         * beggining of playback.
 525         * see also
 526         *      ak4613_dummy_write()
 527         */
 528
 529        if ((cmd != SNDRV_PCM_TRIGGER_START) &&
 530            (cmd != SNDRV_PCM_TRIGGER_RESUME))
 531                return 0;
 532
 533        if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
 534                return  0;
 535
 536        priv->component = component;
 537        schedule_work(&priv->dummy_write_work);
 538
 539        return 0;
 540}
 541
 542static const struct snd_soc_dai_ops ak4613_dai_ops = {
 543        .startup        = ak4613_dai_startup,
 544        .shutdown       = ak4613_dai_shutdown,
 545        .set_sysclk     = ak4613_dai_set_sysclk,
 546        .set_fmt        = ak4613_dai_set_fmt,
 547        .trigger        = ak4613_dai_trigger,
 548        .hw_params      = ak4613_dai_hw_params,
 549};
 550
 551#define AK4613_PCM_RATE         (SNDRV_PCM_RATE_32000  |\
 552                                 SNDRV_PCM_RATE_44100  |\
 553                                 SNDRV_PCM_RATE_48000  |\
 554                                 SNDRV_PCM_RATE_64000  |\
 555                                 SNDRV_PCM_RATE_88200  |\
 556                                 SNDRV_PCM_RATE_96000  |\
 557                                 SNDRV_PCM_RATE_176400 |\
 558                                 SNDRV_PCM_RATE_192000)
 559#define AK4613_PCM_FMTBIT       (SNDRV_PCM_FMTBIT_S24_LE)
 560
 561static struct snd_soc_dai_driver ak4613_dai = {
 562        .name = "ak4613-hifi",
 563        .playback = {
 564                .stream_name    = "Playback",
 565                .channels_min   = 2,
 566                .channels_max   = 2,
 567                .rates          = AK4613_PCM_RATE,
 568                .formats        = AK4613_PCM_FMTBIT,
 569        },
 570        .capture = {
 571                .stream_name    = "Capture",
 572                .channels_min   = 2,
 573                .channels_max   = 2,
 574                .rates          = AK4613_PCM_RATE,
 575                .formats        = AK4613_PCM_FMTBIT,
 576        },
 577        .ops = &ak4613_dai_ops,
 578        .symmetric_rates = 1,
 579};
 580
 581static int ak4613_suspend(struct snd_soc_component *component)
 582{
 583        struct regmap *regmap = dev_get_regmap(component->dev, NULL);
 584
 585        regcache_cache_only(regmap, true);
 586        regcache_mark_dirty(regmap);
 587        return 0;
 588}
 589
 590static int ak4613_resume(struct snd_soc_component *component)
 591{
 592        struct regmap *regmap = dev_get_regmap(component->dev, NULL);
 593
 594        regcache_cache_only(regmap, false);
 595        return regcache_sync(regmap);
 596}
 597
 598static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
 599        .suspend                = ak4613_suspend,
 600        .resume                 = ak4613_resume,
 601        .set_bias_level         = ak4613_set_bias_level,
 602        .controls               = ak4613_snd_controls,
 603        .num_controls           = ARRAY_SIZE(ak4613_snd_controls),
 604        .dapm_widgets           = ak4613_dapm_widgets,
 605        .num_dapm_widgets       = ARRAY_SIZE(ak4613_dapm_widgets),
 606        .dapm_routes            = ak4613_intercon,
 607        .num_dapm_routes        = ARRAY_SIZE(ak4613_intercon),
 608        .idle_bias_on           = 1,
 609        .endianness             = 1,
 610        .non_legacy_dai_naming  = 1,
 611};
 612
 613static void ak4613_parse_of(struct ak4613_priv *priv,
 614                            struct device *dev)
 615{
 616        struct device_node *np = dev->of_node;
 617        char prop[32];
 618        int i;
 619
 620        /* Input 1 - 2 */
 621        for (i = 0; i < 2; i++) {
 622                snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
 623                if (!of_get_property(np, prop, NULL))
 624                        priv->ic |= 1 << i;
 625        }
 626
 627        /* Output 1 - 6 */
 628        for (i = 0; i < 6; i++) {
 629                snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
 630                if (!of_get_property(np, prop, NULL))
 631                        priv->oc |= 1 << i;
 632        }
 633}
 634
 635static int ak4613_i2c_probe(struct i2c_client *i2c,
 636                            const struct i2c_device_id *id)
 637{
 638        struct device *dev = &i2c->dev;
 639        struct device_node *np = dev->of_node;
 640        const struct regmap_config *regmap_cfg;
 641        struct regmap *regmap;
 642        struct ak4613_priv *priv;
 643
 644        regmap_cfg = NULL;
 645        if (np) {
 646                const struct of_device_id *of_id;
 647
 648                of_id = of_match_device(ak4613_of_match, dev);
 649                if (of_id)
 650                        regmap_cfg = of_id->data;
 651        } else {
 652                regmap_cfg = (const struct regmap_config *)id->driver_data;
 653        }
 654
 655        if (!regmap_cfg)
 656                return -EINVAL;
 657
 658        priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 659        if (!priv)
 660                return -ENOMEM;
 661
 662        ak4613_parse_of(priv, dev);
 663
 664        priv->iface             = NULL;
 665        priv->cnt               = 0;
 666        priv->sysclk            = 0;
 667        INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
 668
 669        mutex_init(&priv->lock);
 670
 671        i2c_set_clientdata(i2c, priv);
 672
 673        regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
 674        if (IS_ERR(regmap))
 675                return PTR_ERR(regmap);
 676
 677        return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
 678                                      &ak4613_dai, 1);
 679}
 680
 681static int ak4613_i2c_remove(struct i2c_client *client)
 682{
 683        return 0;
 684}
 685
 686static struct i2c_driver ak4613_i2c_driver = {
 687        .driver = {
 688                .name = "ak4613-codec",
 689                .of_match_table = ak4613_of_match,
 690        },
 691        .probe          = ak4613_i2c_probe,
 692        .remove         = ak4613_i2c_remove,
 693        .id_table       = ak4613_i2c_id,
 694};
 695
 696module_i2c_driver(ak4613_i2c_driver);
 697
 698MODULE_DESCRIPTION("Soc AK4613 driver");
 699MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
 700MODULE_LICENSE("GPL v2");
 701