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