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         .component_driver = {
 235                 .controls               = cs35l32_snd_controls,
 236                 .num_controls           = ARRAY_SIZE(cs35l32_snd_controls),
 237                 .dapm_widgets           = cs35l32_dapm_widgets,
 238                 .num_dapm_widgets       = ARRAY_SIZE(cs35l32_dapm_widgets),
 239                 .dapm_routes            = cs35l32_audio_map,
 240                 .num_dapm_routes        = ARRAY_SIZE(cs35l32_audio_map),
 241         },
 242 };
 243
 244 /* Current and threshold powerup sequence Pg37 in datasheet */
 245 static const struct reg_sequence cs35l32_monitor_patch[] = {
 246
 247         { 0x00, 0x99 },
 248         { 0x48, 0x17 },
 249         { 0x49, 0x56 },
 250         { 0x43, 0x01 },
 251         { 0x3B, 0x62 },
 252         { 0x3C, 0x80 },
 253         { 0x00, 0x00 },
 254 };
 255
 256 static const struct regmap_config cs35l32_regmap = {
 257         .reg_bits = 8,
 258         .val_bits = 8,
 259
 260         .max_register = CS35L32_MAX_REGISTER,
 261         .reg_defaults = cs35l32_reg_defaults,
 262         .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
 263         .volatile_reg = cs35l32_volatile_register,
 264         .readable_reg = cs35l32_readable_register,
 265         .precious_reg = cs35l32_precious_register,
 266         .cache_type = REGCACHE_RBTREE,
 267 };
 268
 269 static int cs35l32_handle_of_data(struct i2c_client *i2c_client,
 270                                     struct cs35l32_platform_data *pdata)
 271 {
 272         struct device_node *np = i2c_client->dev.of_node;
 273         unsigned int val;
 274
 275         if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0)
 276                 pdata->sdout_share = val;
 277
 278         if (of_property_read_u32(np, "cirrus,boost-manager", &val))
 279                 val = -1u;
 280
 281         switch (val) {
 282         case CS35L32_BOOST_MGR_AUTO:
 283         case CS35L32_BOOST_MGR_AUTO_AUDIO:
 284         case CS35L32_BOOST_MGR_BYPASS:
 285         case CS35L32_BOOST_MGR_FIXED:
 286                 pdata->boost_mng = val;
 287                 break;
 288         case -1u:
 289         default:
 290                 dev_err(&i2c_client->dev,
 291                         "Wrong cirrus,boost-manager DT value %d\n", val);
 292                 pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS;
 293         }
 294
 295         if (of_property_read_u32(np, "cirrus,sdout-datacfg", &val))
 296                 val = -1u;
 297         switch (val) {
 298         case CS35L32_DATA_CFG_LR_VP:
 299         case CS35L32_DATA_CFG_LR_STAT:
 300         case CS35L32_DATA_CFG_LR:
 301         case CS35L32_DATA_CFG_LR_VPSTAT:
 302                 pdata->sdout_datacfg = val;
 303                 break;
 304         case -1u:
 305         default:
 306                 dev_err(&i2c_client->dev,
 307                         "Wrong cirrus,sdout-datacfg DT value %d\n", val);
 308                 pdata->sdout_datacfg = CS35L32_DATA_CFG_LR;
 309         }
 310
 311         if (of_property_read_u32(np, "cirrus,battery-threshold", &val))
 312                 val = -1u;
 313         switch (val) {
 314         case CS35L32_BATT_THRESH_3_1V:
 315         case CS35L32_BATT_THRESH_3_2V:
 316         case CS35L32_BATT_THRESH_3_3V:
 317         case CS35L32_BATT_THRESH_3_4V:
 318                 pdata->batt_thresh = val;
 319                 break;
 320         case -1u:
 321         default:
 322                 dev_err(&i2c_client->dev,
 323                         "Wrong cirrus,battery-threshold DT value %d\n", val);
 324                 pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V;
 325         }
 326
 327         if (of_property_read_u32(np, "cirrus,battery-recovery", &val))
 328                 val = -1u;
 329         switch (val) {
 330         case CS35L32_BATT_RECOV_3_1V:
 331         case CS35L32_BATT_RECOV_3_2V:
 332         case CS35L32_BATT_RECOV_3_3V:
 333         case CS35L32_BATT_RECOV_3_4V:
 334         case CS35L32_BATT_RECOV_3_5V:
 335         case CS35L32_BATT_RECOV_3_6V:
 336                 pdata->batt_recov = val;
 337                 break;
 338         case -1u:
 339         default:
 340                 dev_err(&i2c_client->dev,
 341                         "Wrong cirrus,battery-recovery DT value %d\n", val);
 342                 pdata->batt_recov = CS35L32_BATT_RECOV_3_4V;
 343         }
 344
 345         return 0;
 346 }
 347
 348 static int cs35l32_i2c_probe(struct i2c_client *i2c_client,
 349                                        const struct i2c_device_id *id)
 350 {
 351         struct cs35l32_private *cs35l32;
 352         struct cs35l32_platform_data *pdata =
 353                 dev_get_platdata(&i2c_client->dev);
 354         int ret, i;
 355         unsigned int devid = 0;
 356         unsigned int reg;
 357
 358
 359         cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l32_private),
 360                                GFP_KERNEL);
 361         if (!cs35l32) {
 362                 dev_err(&i2c_client->dev, "could not allocate codec\n");
 363                 return -ENOMEM;
 364         }
 365
 366         i2c_set_clientdata(i2c_client, cs35l32);
 367
 368         cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
 369         if (IS_ERR(cs35l32->regmap)) {
 370                 ret = PTR_ERR(cs35l32->regmap);
 371                 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
 372                 return ret;
 373         }
 374
 375         if (pdata) {
 376                 cs35l32->pdata = *pdata;
 377         } else {
 378                 pdata = devm_kzalloc(&i2c_client->dev,
 379                                      sizeof(struct cs35l32_platform_data),
 380                                 GFP_KERNEL);
 381                 if (!pdata) {
 382                         dev_err(&i2c_client->dev, "could not allocate pdata\n");
 383                         return -ENOMEM;
 384                 }
 385                 if (i2c_client->dev.of_node) {
 386                         ret = cs35l32_handle_of_data(i2c_client,
 387                                                      &cs35l32->pdata);
 388                         if (ret != 0)
 389                                 return ret;
 390                 }
 391         }
 392
 393         for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
 394                 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
 395
 396         ret = devm_regulator_bulk_get(&i2c_client->dev,
 397                                       ARRAY_SIZE(cs35l32->supplies),
 398                                       cs35l32->supplies);
 399         if (ret != 0) {
 400                 dev_err(&i2c_client->dev,
 401                         "Failed to request supplies: %d\n", ret);
 402                 return ret;
 403         }
 404
 405         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 406                                     cs35l32->supplies);
 407         if (ret != 0) {
 408                 dev_err(&i2c_client->dev,
 409                         "Failed to enable supplies: %d\n", ret);
 410                 return ret;
 411         }
 412
 413         /* Reset the Device */
 414         cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
 415                 "reset", GPIOD_OUT_LOW);
 416         if (IS_ERR(cs35l32->reset_gpio))
 417                 return PTR_ERR(cs35l32->reset_gpio);
 418
 419         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 420
 421         /* initialize codec */
 422         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
 423         devid = (reg & 0xFF) << 12;
 424
 425         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, &reg);
 426         devid |= (reg & 0xFF) << 4;
 427
 428         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, &reg);
 429         devid |= (reg & 0xF0) >> 4;
 430
 431         if (devid != CS35L32_CHIP_ID) {
 432                 ret = -ENODEV;
 433                 dev_err(&i2c_client->dev,
 434                         "CS35L32 Device ID (%X). Expected %X\n",
 435                         devid, CS35L32_CHIP_ID);
 436                 return ret;
 437         }
 438
 439         ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
 440         if (ret < 0) {
 441                 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
 442                 return ret;
 443         }
 444
 445         ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
 446                                     ARRAY_SIZE(cs35l32_monitor_patch));
 447         if (ret < 0) {
 448                 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
 449                 return ret;
 450         }
 451
 452         dev_info(&i2c_client->dev,
 453                  "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
 454
 455         /* Setup VBOOST Management */
 456         if (cs35l32->pdata.boost_mng)
 457                 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
 458                                    CS35L32_BOOST_MASK,
 459                                 cs35l32->pdata.boost_mng);
 460
 461         /* Setup ADSP Format Config */
 462         if (cs35l32->pdata.sdout_share)
 463                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 464                                     CS35L32_ADSP_SHARE_MASK,
 465                                 cs35l32->pdata.sdout_share << 3);
 466
 467         /* Setup ADSP Data Configuration */
 468         if (cs35l32->pdata.sdout_datacfg)
 469                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 470                                    CS35L32_ADSP_DATACFG_MASK,
 471                                 cs35l32->pdata.sdout_datacfg << 4);
 472
 473         /* Setup Low Battery Recovery  */
 474         if (cs35l32->pdata.batt_recov)
 475                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 476                                    CS35L32_BATT_REC_MASK,
 477                                 cs35l32->pdata.batt_recov << 1);
 478
 479         /* Setup Low Battery Threshold */
 480         if (cs35l32->pdata.batt_thresh)
 481                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 482                                    CS35L32_BATT_THRESH_MASK,
 483                                 cs35l32->pdata.batt_thresh << 4);
 484
 485         /* Power down the AMP */
 486         regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
 487                             CS35L32_PDN_AMP);
 488
 489         /* Clear MCLK Error Bit since we don't have the clock yet */
 490         ret = regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
 491
 492         ret =  snd_soc_register_codec(&i2c_client->dev,
 493                         &soc_codec_dev_cs35l32, cs35l32_dai,
 494                         ARRAY_SIZE(cs35l32_dai));
 495         if (ret < 0)
 496                 goto err_disable;
 497
 498         return 0;
 499
 500 err_disable:
 501         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 502                                cs35l32->supplies);
 503         return ret;
 504 }
 505
 506 static int cs35l32_i2c_remove(struct i2c_client *i2c_client)
 507 {
 508         struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
 509
 510         snd_soc_unregister_codec(&i2c_client->dev);
 511
 512         /* Hold down reset */
 513         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 514
 515         return 0;
 516 }
 517
 518 #ifdef CONFIG_PM
 519 static int cs35l32_runtime_suspend(struct device *dev)
 520 {
 521         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 522
 523         regcache_cache_only(cs35l32->regmap, true);
 524         regcache_mark_dirty(cs35l32->regmap);
 525
 526         /* Hold down reset */
 527         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 528
 529         /* remove power */
 530         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 531                                cs35l32->supplies);
 532
 533         return 0;
 534 }
 535
 536 static int cs35l32_runtime_resume(struct device *dev)
 537 {
 538         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 539         int ret;
 540
 541         /* Enable power */
 542         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 543                                     cs35l32->supplies);
 544         if (ret != 0) {
 545                 dev_err(dev, "Failed to enable supplies: %d\n",
 546                         ret);
 547                 return ret;
 548         }
 549
 550         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 551
 552         regcache_cache_only(cs35l32->regmap, false);
 553         regcache_sync(cs35l32->regmap);
 554
 555         return 0;
 556 }
 557 #endif
 558
 559 static const struct dev_pm_ops cs35l32_runtime_pm = {
 560         SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
 561                            NULL)
 562 };
 563
 564 static const struct of_device_id cs35l32_of_match[] = {
 565         { .compatible = "cirrus,cs35l32", },
 566         {},
 567 };
 568 MODULE_DEVICE_TABLE(of, cs35l32_of_match);
 569
 570
 571 static const struct i2c_device_id cs35l32_id[] = {
 572         {"cs35l32", 0},
 573         {}
 574 };
 575
 576 MODULE_DEVICE_TABLE(i2c, cs35l32_id);
 577
 578 static struct i2c_driver cs35l32_i2c_driver = {
 579         .driver = {
 580                    .name = "cs35l32",
 581                    .pm = &cs35l32_runtime_pm,
 582                    .of_match_table = cs35l32_of_match,
 583                    },
 584         .id_table = cs35l32_id,
 585         .probe = cs35l32_i2c_probe,
 586         .remove = cs35l32_i2c_remove,
 587 };
 588
 589 module_i2c_driver(cs35l32_i2c_driver);
 590
 591 MODULE_DESCRIPTION("ASoC CS35L32 driver");
 592 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
 593 MODULE_LICENSE("GPL");