sound/soc/codecs/cs35l32.c

   1 /*
   2  * cs35l32.c -- CS35L32 ALSA SoC audio driver
   3  *
   4  * Copyright 2014 CirrusLogic, Inc.
   5  *
   6  * Author: Brian Austin <brian.austin@cirrus.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/delay.h>
  19 #include <linux/i2c.h>
  20 #include <linux/gpio.h>
  21 #include <linux/regmap.h>
  22 #include <linux/slab.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/regulator/consumer.h>
  25 #include <linux/gpio/consumer.h>
  26 #include <linux/of_device.h>
  27 #include <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/pcm_params.h>
  30 #include <sound/soc.h>
  31 #include <sound/soc-dapm.h>
  32 #include <sound/initval.h>
  33 #include <sound/tlv.h>
  34 #include <dt-bindings/sound/cs35l32.h>
  35
  36 #include "cs35l32.h"
  37
  38 #define CS35L32_NUM_SUPPLIES 2
  39 static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = {
  40         "VA",
  41         "VP",
  42 };
  43
  44 struct  cs35l32_private {
  45         struct regmap *regmap;
  46         struct snd_soc_codec *codec;
  47         struct regulator_bulk_data supplies[CS35L32_NUM_SUPPLIES];
  48         struct cs35l32_platform_data pdata;
  49         struct gpio_desc *reset_gpio;
  50 };
  51
  52 static const struct reg_default cs35l32_reg_defaults[] = {
  53
  54         { 0x06, 0x04 }, /* Power Ctl 1 */
  55         { 0x07, 0xE8 }, /* Power Ctl 2 */
  56         { 0x08, 0x40 }, /* Clock Ctl */
  57         { 0x09, 0x20 }, /* Low Battery Threshold */
  58         { 0x0A, 0x00 }, /* Voltage Monitor [RO] */
  59         { 0x0B, 0x40 }, /* Conv Peak Curr Protection CTL */
  60         { 0x0C, 0x07 }, /* IMON Scaling */
  61         { 0x0D, 0x03 }, /* Audio/LED Pwr Manager */
  62         { 0x0F, 0x20 }, /* Serial Port Control */
  63         { 0x10, 0x14 }, /* Class D Amp CTL */
  64         { 0x11, 0x00 }, /* Protection Release CTL */
  65         { 0x12, 0xFF }, /* Interrupt Mask 1 */
  66         { 0x13, 0xFF }, /* Interrupt Mask 2 */
  67         { 0x14, 0xFF }, /* Interrupt Mask 3 */
  68         { 0x19, 0x00 }, /* LED Flash Mode Current */
  69         { 0x1A, 0x00 }, /* LED Movie Mode Current */
  70         { 0x1B, 0x20 }, /* LED Flash Timer */
  71         { 0x1C, 0x00 }, /* LED Flash Inhibit Current */
  72 };
  73
  74 static bool cs35l32_readable_register(struct device *dev, unsigned int reg)
  75 {
  76         switch (reg) {
  77         case CS35L32_DEVID_AB ... CS35L32_AUDIO_LED_MNGR:
  78         case CS35L32_ADSP_CTL ... CS35L32_FLASH_INHIBIT:
  79                 return true;
  80         default:
  81                 return false;
  82         }
  83 }
  84
  85 static bool cs35l32_volatile_register(struct device *dev, unsigned int reg)
  86 {
  87         switch (reg) {
  88         case CS35L32_DEVID_AB ... CS35L32_REV_ID:
  89         case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
  90                 return true;
  91         default:
  92                 return false;
  93         }
  94 }
  95
  96 static bool cs35l32_precious_register(struct device *dev, unsigned int reg)
  97 {
  98         switch (reg) {
  99         case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
 100                 return true;
 101         default:
 102                 return false;
 103         }
 104 }
 105
 106 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0);
 107
 108 static const struct snd_kcontrol_new imon_ctl =
 109         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1);
 110
 111 static const struct snd_kcontrol_new vmon_ctl =
 112         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1);
 113
 114 static const struct snd_kcontrol_new vpmon_ctl =
 115         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1);
 116
 117 static const struct snd_kcontrol_new cs35l32_snd_controls[] = {
 118         SOC_SINGLE_TLV("Speaker Volume", CS35L32_CLASSD_CTL,
 119                        3, 0x04, 1, classd_ctl_tlv),
 120         SOC_SINGLE("Zero Cross Switch", CS35L32_CLASSD_CTL, 2, 1, 0),
 121         SOC_SINGLE("Gain Manager Switch", CS35L32_AUDIO_LED_MNGR, 3, 1, 0),
 122 };
 123
 124 static const struct snd_soc_dapm_widget cs35l32_dapm_widgets[] = {
 125
 126         SND_SOC_DAPM_SUPPLY("BOOST", CS35L32_PWRCTL1, 2, 1, NULL, 0),
 127         SND_SOC_DAPM_OUT_DRV("Speaker", CS35L32_PWRCTL1, 7, 1, NULL, 0),
 128
 129         SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L32_PWRCTL2, 3, 1),
 130
 131         SND_SOC_DAPM_INPUT("VP"),
 132         SND_SOC_DAPM_INPUT("ISENSE"),
 133         SND_SOC_DAPM_INPUT("VSENSE"),
 134
 135         SND_SOC_DAPM_SWITCH("VMON ADC", CS35L32_PWRCTL2, 7, 1, &vmon_ctl),
 136         SND_SOC_DAPM_SWITCH("IMON ADC", CS35L32_PWRCTL2, 6, 1, &imon_ctl),
 137         SND_SOC_DAPM_SWITCH("VPMON ADC", CS35L32_PWRCTL2, 5, 1, &vpmon_ctl),
 138 };
 139
 140 static const struct snd_soc_dapm_route cs35l32_audio_map[] = {
 141
 142         {"Speaker", NULL, "BOOST"},
 143
 144         {"VMON ADC", NULL, "VSENSE"},
 145         {"IMON ADC", NULL, "ISENSE"},
 146         {"VPMON ADC", NULL, "VP"},
 147
 148         {"SDOUT", "Switch", "VMON ADC"},
 149         {"SDOUT",  "Switch", "IMON ADC"},
 150         {"SDOUT", "Switch", "VPMON ADC"},
 151
 152         {"Capture", NULL, "SDOUT"},
 153 };
 154
 155 static int cs35l32_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 156 {
 157         struct snd_soc_codec *codec = codec_dai->codec;
 158
 159         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 160         case SND_SOC_DAIFMT_CBM_CFM:
 161                 snd_soc_update_bits(codec, CS35L32_ADSP_CTL,
 162                                     CS35L32_ADSP_MASTER_MASK,
 163                                 CS35L32_ADSP_MASTER_MASK);
 164                 break;
 165         case SND_SOC_DAIFMT_CBS_CFS:
 166                 snd_soc_update_bits(codec, CS35L32_ADSP_CTL,
 167                                     CS35L32_ADSP_MASTER_MASK, 0);
 168                 break;
 169         default:
 170                 return -EINVAL;
 171         }
 172
 173         return 0;
 174 }
 175
 176 static int cs35l32_set_tristate(struct snd_soc_dai *dai, int tristate)
 177 {
 178         struct snd_soc_codec *codec = dai->codec;
 179
 180         return snd_soc_update_bits(codec, CS35L32_PWRCTL2,
 181                                         CS35L32_SDOUT_3ST, tristate << 3);
 182 }
 183
 184 static const struct snd_soc_dai_ops cs35l32_ops = {
 185         .set_fmt = cs35l32_set_dai_fmt,
 186         .set_tristate = cs35l32_set_tristate,
 187 };
 188
 189 static struct snd_soc_dai_driver cs35l32_dai[] = {
 190         {
 191                 .name = "cs35l32-monitor",
 192                 .id = 0,
 193                 .capture = {
 194                         .stream_name = "Capture",
 195                         .channels_min = 2,
 196                         .channels_max = 2,
 197                         .rates = CS35L32_RATES,
 198                         .formats = CS35L32_FORMATS,
 199                 },
 200                 .ops = &cs35l32_ops,
 201                 .symmetric_rates = 1,
 202         }
 203 };
 204
 205 static int cs35l32_codec_set_sysclk(struct snd_soc_codec *codec,
 206                               int clk_id, int source, unsigned int freq, int dir)
 207 {
 208         unsigned int val;
 209
 210         switch (freq) {
 211         case 6000000:
 212                 val = CS35L32_MCLK_RATIO;
 213                 break;
 214         case 12000000:
 215                 val = CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO;
 216                 break;
 217         case 6144000:
 218                 val = 0;
 219                 break;
 220         case 12288000:
 221                 val = CS35L32_MCLK_DIV2_MASK;
 222                 break;
 223         default:
 224                 return -EINVAL;
 225         }
 226
 227         return snd_soc_update_bits(codec, CS35L32_CLK_CTL,
 228                         CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val);
 229 }
 230
 231 static const struct snd_soc_codec_driver soc_codec_dev_cs35l32 = {
 232         .set_sysclk = cs35l32_codec_set_sysclk,
 233
 234         .dapm_widgets = cs35l32_dapm_widgets,
 235         .num_dapm_widgets = ARRAY_SIZE(cs35l32_dapm_widgets),
 236         .dapm_routes = cs35l32_audio_map,
 237         .num_dapm_routes = ARRAY_SIZE(cs35l32_audio_map),
 238
 239         .controls = cs35l32_snd_controls,
 240         .num_controls = ARRAY_SIZE(cs35l32_snd_controls),
 241 };
 242
 243 /* Current and threshold powerup sequence Pg37 in datasheet */
 244 static const struct reg_sequence cs35l32_monitor_patch[] = {
 245
 246         { 0x00, 0x99 },
 247         { 0x48, 0x17 },
 248         { 0x49, 0x56 },
 249         { 0x43, 0x01 },
 250         { 0x3B, 0x62 },
 251         { 0x3C, 0x80 },
 252         { 0x00, 0x00 },
 253 };
 254
 255 static const struct regmap_config cs35l32_regmap = {
 256         .reg_bits = 8,
 257         .val_bits = 8,
 258
 259         .max_register = CS35L32_MAX_REGISTER,
 260         .reg_defaults = cs35l32_reg_defaults,
 261         .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
 262         .volatile_reg = cs35l32_volatile_register,
 263         .readable_reg = cs35l32_readable_register,
 264         .precious_reg = cs35l32_precious_register,
 265         .cache_type = REGCACHE_RBTREE,
 266 };
 267
 268 static int cs35l32_handle_of_data(struct i2c_client *i2c_client,
 269                                     struct cs35l32_platform_data *pdata)
 270 {
 271         struct device_node *np = i2c_client->dev.of_node;
 272         unsigned int val;
 273
 274         if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0)
 275                 pdata->sdout_share = val;
 276
 277         if (of_property_read_u32(np, "cirrus,boost-manager", &val))
 278                 val = -1u;
 279
 280         switch (val) {
 281         case CS35L32_BOOST_MGR_AUTO:
 282         case CS35L32_BOOST_MGR_AUTO_AUDIO:
 283         case CS35L32_BOOST_MGR_BYPASS:
 284         case CS35L32_BOOST_MGR_FIXED:
 285                 pdata->boost_mng = val;
 286                 break;
 287         case -1u:
 288         default:
 289                 dev_err(&i2c_client->dev,
 290                         "Wrong cirrus,boost-manager DT value %d\n", val);
 291                 pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS;
 292         }
 293
 294         if (of_property_read_u32(np, "cirrus,sdout-datacfg", &val))
 295                 val = -1u;
 296         switch (val) {
 297         case CS35L32_DATA_CFG_LR_VP:
 298         case CS35L32_DATA_CFG_LR_STAT:
 299         case CS35L32_DATA_CFG_LR:
 300         case CS35L32_DATA_CFG_LR_VPSTAT:
 301                 pdata->sdout_datacfg = val;
 302                 break;
 303         case -1u:
 304         default:
 305                 dev_err(&i2c_client->dev,
 306                         "Wrong cirrus,sdout-datacfg DT value %d\n", val);
 307                 pdata->sdout_datacfg = CS35L32_DATA_CFG_LR;
 308         }
 309
 310         if (of_property_read_u32(np, "cirrus,battery-threshold", &val))
 311                 val = -1u;
 312         switch (val) {
 313         case CS35L32_BATT_THRESH_3_1V:
 314         case CS35L32_BATT_THRESH_3_2V:
 315         case CS35L32_BATT_THRESH_3_3V:
 316         case CS35L32_BATT_THRESH_3_4V:
 317                 pdata->batt_thresh = val;
 318                 break;
 319         case -1u:
 320         default:
 321                 dev_err(&i2c_client->dev,
 322                         "Wrong cirrus,battery-threshold DT value %d\n", val);
 323                 pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V;
 324         }
 325
 326         if (of_property_read_u32(np, "cirrus,battery-recovery", &val))
 327                 val = -1u;
 328         switch (val) {
 329         case CS35L32_BATT_RECOV_3_1V:
 330         case CS35L32_BATT_RECOV_3_2V:
 331         case CS35L32_BATT_RECOV_3_3V:
 332         case CS35L32_BATT_RECOV_3_4V:
 333         case CS35L32_BATT_RECOV_3_5V:
 334         case CS35L32_BATT_RECOV_3_6V:
 335                 pdata->batt_recov = val;
 336                 break;
 337         case -1u:
 338         default:
 339                 dev_err(&i2c_client->dev,
 340                         "Wrong cirrus,battery-recovery DT value %d\n", val);
 341                 pdata->batt_recov = CS35L32_BATT_RECOV_3_4V;
 342         }
 343
 344         return 0;
 345 }
 346
 347 static int cs35l32_i2c_probe(struct i2c_client *i2c_client,
 348                                        const struct i2c_device_id *id)
 349 {
 350         struct cs35l32_private *cs35l32;
 351         struct cs35l32_platform_data *pdata =
 352                 dev_get_platdata(&i2c_client->dev);
 353         int ret, i;
 354         unsigned int devid = 0;
 355         unsigned int reg;
 356
 357
 358         cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l32_private),
 359                                GFP_KERNEL);
 360         if (!cs35l32) {
 361                 dev_err(&i2c_client->dev, "could not allocate codec\n");
 362                 return -ENOMEM;
 363         }
 364
 365         i2c_set_clientdata(i2c_client, cs35l32);
 366
 367         cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
 368         if (IS_ERR(cs35l32->regmap)) {
 369                 ret = PTR_ERR(cs35l32->regmap);
 370                 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
 371                 return ret;
 372         }
 373
 374         if (pdata) {
 375                 cs35l32->pdata = *pdata;
 376         } else {
 377                 pdata = devm_kzalloc(&i2c_client->dev,
 378                                      sizeof(struct cs35l32_platform_data),
 379                                 GFP_KERNEL);
 380                 if (!pdata) {
 381                         dev_err(&i2c_client->dev, "could not allocate pdata\n");
 382                         return -ENOMEM;
 383                 }
 384                 if (i2c_client->dev.of_node) {
 385                         ret = cs35l32_handle_of_data(i2c_client,
 386                                                      &cs35l32->pdata);
 387                         if (ret != 0)
 388                                 return ret;
 389                 }
 390         }
 391
 392         for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
 393                 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
 394
 395         ret = devm_regulator_bulk_get(&i2c_client->dev,
 396                                       ARRAY_SIZE(cs35l32->supplies),
 397                                       cs35l32->supplies);
 398         if (ret != 0) {
 399                 dev_err(&i2c_client->dev,
 400                         "Failed to request supplies: %d\n", ret);
 401                 return ret;
 402         }
 403
 404         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 405                                     cs35l32->supplies);
 406         if (ret != 0) {
 407                 dev_err(&i2c_client->dev,
 408                         "Failed to enable supplies: %d\n", ret);
 409                 return ret;
 410         }
 411
 412         /* Reset the Device */
 413         cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
 414                 "reset", GPIOD_OUT_LOW);
 415         if (IS_ERR(cs35l32->reset_gpio))
 416                 return PTR_ERR(cs35l32->reset_gpio);
 417
 418         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 419
 420         /* initialize codec */
 421         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
 422         devid = (reg & 0xFF) << 12;
 423
 424         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, &reg);
 425         devid |= (reg & 0xFF) << 4;
 426
 427         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, &reg);
 428         devid |= (reg & 0xF0) >> 4;
 429
 430         if (devid != CS35L32_CHIP_ID) {
 431                 ret = -ENODEV;
 432                 dev_err(&i2c_client->dev,
 433                         "CS35L32 Device ID (%X). Expected %X\n",
 434                         devid, CS35L32_CHIP_ID);
 435                 return ret;
 436         }
 437
 438         ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
 439         if (ret < 0) {
 440                 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
 441                 return ret;
 442         }
 443
 444         ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
 445                                     ARRAY_SIZE(cs35l32_monitor_patch));
 446         if (ret < 0) {
 447                 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
 448                 return ret;
 449         }
 450
 451         dev_info(&i2c_client->dev,
 452                  "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
 453
 454         /* Setup VBOOST Management */
 455         if (cs35l32->pdata.boost_mng)
 456                 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
 457                                    CS35L32_BOOST_MASK,
 458                                 cs35l32->pdata.boost_mng);
 459
 460         /* Setup ADSP Format Config */
 461         if (cs35l32->pdata.sdout_share)
 462                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 463                                     CS35L32_ADSP_SHARE_MASK,
 464                                 cs35l32->pdata.sdout_share << 3);
 465
 466         /* Setup ADSP Data Configuration */
 467         if (cs35l32->pdata.sdout_datacfg)
 468                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 469                                    CS35L32_ADSP_DATACFG_MASK,
 470                                 cs35l32->pdata.sdout_datacfg << 4);
 471
 472         /* Setup Low Battery Recovery  */
 473         if (cs35l32->pdata.batt_recov)
 474                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 475                                    CS35L32_BATT_REC_MASK,
 476                                 cs35l32->pdata.batt_recov << 1);
 477
 478         /* Setup Low Battery Threshold */
 479         if (cs35l32->pdata.batt_thresh)
 480                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 481                                    CS35L32_BATT_THRESH_MASK,
 482                                 cs35l32->pdata.batt_thresh << 4);
 483
 484         /* Power down the AMP */
 485         regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
 486                             CS35L32_PDN_AMP);
 487
 488         /* Clear MCLK Error Bit since we don't have the clock yet */
 489         ret = regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
 490
 491         ret =  snd_soc_register_codec(&i2c_client->dev,
 492                         &soc_codec_dev_cs35l32, cs35l32_dai,
 493                         ARRAY_SIZE(cs35l32_dai));
 494         if (ret < 0)
 495                 goto err_disable;
 496
 497         return 0;
 498
 499 err_disable:
 500         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 501                                cs35l32->supplies);
 502         return ret;
 503 }
 504
 505 static int cs35l32_i2c_remove(struct i2c_client *i2c_client)
 506 {
 507         struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
 508
 509         snd_soc_unregister_codec(&i2c_client->dev);
 510
 511         /* Hold down reset */
 512         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 513
 514         return 0;
 515 }
 516
 517 #ifdef CONFIG_PM
 518 static int cs35l32_runtime_suspend(struct device *dev)
 519 {
 520         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 521
 522         regcache_cache_only(cs35l32->regmap, true);
 523         regcache_mark_dirty(cs35l32->regmap);
 524
 525         /* Hold down reset */
 526         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 527
 528         /* remove power */
 529         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 530                                cs35l32->supplies);
 531
 532         return 0;
 533 }
 534
 535 static int cs35l32_runtime_resume(struct device *dev)
 536 {
 537         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 538         int ret;
 539
 540         /* Enable power */
 541         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 542                                     cs35l32->supplies);
 543         if (ret != 0) {
 544                 dev_err(dev, "Failed to enable supplies: %d\n",
 545                         ret);
 546                 return ret;
 547         }
 548
 549         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 550
 551         regcache_cache_only(cs35l32->regmap, false);
 552         regcache_sync(cs35l32->regmap);
 553
 554         return 0;
 555 }
 556 #endif
 557
 558 static const struct dev_pm_ops cs35l32_runtime_pm = {
 559         SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
 560                            NULL)
 561 };
 562
 563 static const struct of_device_id cs35l32_of_match[] = {
 564         { .compatible = "cirrus,cs35l32", },
 565         {},
 566 };
 567 MODULE_DEVICE_TABLE(of, cs35l32_of_match);
 568
 569
 570 static const struct i2c_device_id cs35l32_id[] = {
 571         {"cs35l32", 0},
 572         {}
 573 };
 574
 575 MODULE_DEVICE_TABLE(i2c, cs35l32_id);
 576
 577 static struct i2c_driver cs35l32_i2c_driver = {
 578         .driver = {
 579                    .name = "cs35l32",
 580                    .pm = &cs35l32_runtime_pm,
 581                    .of_match_table = cs35l32_of_match,
 582                    },
 583         .id_table = cs35l32_id,
 584         .probe = cs35l32_i2c_probe,
 585         .remove = cs35l32_i2c_remove,
 586 };
 587
 588 module_i2c_driver(cs35l32_i2c_driver);
 589
 590 MODULE_DESCRIPTION("ASoC CS35L32 driver");
 591 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
 592 MODULE_LICENSE("GPL");