sound/soc/codecs/cs35l32.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * cs35l32.c -- CS35L32 ALSA SoC audio driver
   4  *
   5  * Copyright 2014 CirrusLogic, Inc.
   6  *
   7  * Author: Brian Austin <brian.austin@cirrus.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/delay.h>
  15 #include <linux/i2c.h>
  16 #include <linux/gpio.h>
  17 #include <linux/regmap.h>
  18 #include <linux/slab.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/regulator/consumer.h>
  21 #include <linux/gpio/consumer.h>
  22 #include <linux/of_device.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/soc.h>
  27 #include <sound/soc-dapm.h>
  28 #include <sound/initval.h>
  29 #include <sound/tlv.h>
  30 #include <dt-bindings/sound/cs35l32.h>
  31
  32 #include "cs35l32.h"
  33
  34 #define CS35L32_NUM_SUPPLIES 2
  35 static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = {
  36         "VA",
  37         "VP",
  38 };
  39
  40 struct  cs35l32_private {
  41         struct regmap *regmap;
  42         struct snd_soc_component *component;
  43         struct regulator_bulk_data supplies[CS35L32_NUM_SUPPLIES];
  44         struct cs35l32_platform_data pdata;
  45         struct gpio_desc *reset_gpio;
  46 };
  47
  48 static const struct reg_default cs35l32_reg_defaults[] = {
  49
  50         { 0x06, 0x04 }, /* Power Ctl 1 */
  51         { 0x07, 0xE8 }, /* Power Ctl 2 */
  52         { 0x08, 0x40 }, /* Clock Ctl */
  53         { 0x09, 0x20 }, /* Low Battery Threshold */
  54         { 0x0A, 0x00 }, /* Voltage Monitor [RO] */
  55         { 0x0B, 0x40 }, /* Conv Peak Curr Protection CTL */
  56         { 0x0C, 0x07 }, /* IMON Scaling */
  57         { 0x0D, 0x03 }, /* Audio/LED Pwr Manager */
  58         { 0x0F, 0x20 }, /* Serial Port Control */
  59         { 0x10, 0x14 }, /* Class D Amp CTL */
  60         { 0x11, 0x00 }, /* Protection Release CTL */
  61         { 0x12, 0xFF }, /* Interrupt Mask 1 */
  62         { 0x13, 0xFF }, /* Interrupt Mask 2 */
  63         { 0x14, 0xFF }, /* Interrupt Mask 3 */
  64         { 0x19, 0x00 }, /* LED Flash Mode Current */
  65         { 0x1A, 0x00 }, /* LED Movie Mode Current */
  66         { 0x1B, 0x20 }, /* LED Flash Timer */
  67         { 0x1C, 0x00 }, /* LED Flash Inhibit Current */
  68 };
  69
  70 static bool cs35l32_readable_register(struct device *dev, unsigned int reg)
  71 {
  72         switch (reg) {
  73         case CS35L32_DEVID_AB ... CS35L32_AUDIO_LED_MNGR:
  74         case CS35L32_ADSP_CTL ... CS35L32_FLASH_INHIBIT:
  75                 return true;
  76         default:
  77                 return false;
  78         }
  79 }
  80
  81 static bool cs35l32_volatile_register(struct device *dev, unsigned int reg)
  82 {
  83         switch (reg) {
  84         case CS35L32_DEVID_AB ... CS35L32_REV_ID:
  85         case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
  86                 return true;
  87         default:
  88                 return false;
  89         }
  90 }
  91
  92 static bool cs35l32_precious_register(struct device *dev, unsigned int reg)
  93 {
  94         switch (reg) {
  95         case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
  96                 return true;
  97         default:
  98                 return false;
  99         }
 100 }
 101
 102 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0);
 103
 104 static const struct snd_kcontrol_new imon_ctl =
 105         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1);
 106
 107 static const struct snd_kcontrol_new vmon_ctl =
 108         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1);
 109
 110 static const struct snd_kcontrol_new vpmon_ctl =
 111         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1);
 112
 113 static const struct snd_kcontrol_new cs35l32_snd_controls[] = {
 114         SOC_SINGLE_TLV("Speaker Volume", CS35L32_CLASSD_CTL,
 115                        3, 0x04, 1, classd_ctl_tlv),
 116         SOC_SINGLE("Zero Cross Switch", CS35L32_CLASSD_CTL, 2, 1, 0),
 117         SOC_SINGLE("Gain Manager Switch", CS35L32_AUDIO_LED_MNGR, 3, 1, 0),
 118 };
 119
 120 static const struct snd_soc_dapm_widget cs35l32_dapm_widgets[] = {
 121
 122         SND_SOC_DAPM_SUPPLY("BOOST", CS35L32_PWRCTL1, 2, 1, NULL, 0),
 123         SND_SOC_DAPM_OUT_DRV("Speaker", CS35L32_PWRCTL1, 7, 1, NULL, 0),
 124
 125         SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L32_PWRCTL2, 3, 1),
 126
 127         SND_SOC_DAPM_INPUT("VP"),
 128         SND_SOC_DAPM_INPUT("ISENSE"),
 129         SND_SOC_DAPM_INPUT("VSENSE"),
 130
 131         SND_SOC_DAPM_SWITCH("VMON ADC", CS35L32_PWRCTL2, 7, 1, &vmon_ctl),
 132         SND_SOC_DAPM_SWITCH("IMON ADC", CS35L32_PWRCTL2, 6, 1, &imon_ctl),
 133         SND_SOC_DAPM_SWITCH("VPMON ADC", CS35L32_PWRCTL2, 5, 1, &vpmon_ctl),
 134 };
 135
 136 static const struct snd_soc_dapm_route cs35l32_audio_map[] = {
 137
 138         {"Speaker", NULL, "BOOST"},
 139
 140         {"VMON ADC", NULL, "VSENSE"},
 141         {"IMON ADC", NULL, "ISENSE"},
 142         {"VPMON ADC", NULL, "VP"},
 143
 144         {"SDOUT", "Switch", "VMON ADC"},
 145         {"SDOUT",  "Switch", "IMON ADC"},
 146         {"SDOUT", "Switch", "VPMON ADC"},
 147
 148         {"Capture", NULL, "SDOUT"},
 149 };
 150
 151 static int cs35l32_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 152 {
 153         struct snd_soc_component *component = codec_dai->component;
 154
 155         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 156         case SND_SOC_DAIFMT_CBM_CFM:
 157                 snd_soc_component_update_bits(component, CS35L32_ADSP_CTL,
 158                                     CS35L32_ADSP_MASTER_MASK,
 159                                 CS35L32_ADSP_MASTER_MASK);
 160                 break;
 161         case SND_SOC_DAIFMT_CBS_CFS:
 162                 snd_soc_component_update_bits(component, CS35L32_ADSP_CTL,
 163                                     CS35L32_ADSP_MASTER_MASK, 0);
 164                 break;
 165         default:
 166                 return -EINVAL;
 167         }
 168
 169         return 0;
 170 }
 171
 172 static int cs35l32_set_tristate(struct snd_soc_dai *dai, int tristate)
 173 {
 174         struct snd_soc_component *component = dai->component;
 175
 176         return snd_soc_component_update_bits(component, CS35L32_PWRCTL2,
 177                                         CS35L32_SDOUT_3ST, tristate << 3);
 178 }
 179
 180 static const struct snd_soc_dai_ops cs35l32_ops = {
 181         .set_fmt = cs35l32_set_dai_fmt,
 182         .set_tristate = cs35l32_set_tristate,
 183 };
 184
 185 static struct snd_soc_dai_driver cs35l32_dai[] = {
 186         {
 187                 .name = "cs35l32-monitor",
 188                 .id = 0,
 189                 .capture = {
 190                         .stream_name = "Capture",
 191                         .channels_min = 2,
 192                         .channels_max = 2,
 193                         .rates = CS35L32_RATES,
 194                         .formats = CS35L32_FORMATS,
 195                 },
 196                 .ops = &cs35l32_ops,
 197                 .symmetric_rate = 1,
 198         }
 199 };
 200
 201 static int cs35l32_component_set_sysclk(struct snd_soc_component *component,
 202                               int clk_id, int source, unsigned int freq, int dir)
 203 {
 204         unsigned int val;
 205
 206         switch (freq) {
 207         case 6000000:
 208                 val = CS35L32_MCLK_RATIO;
 209                 break;
 210         case 12000000:
 211                 val = CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO;
 212                 break;
 213         case 6144000:
 214                 val = 0;
 215                 break;
 216         case 12288000:
 217                 val = CS35L32_MCLK_DIV2_MASK;
 218                 break;
 219         default:
 220                 return -EINVAL;
 221         }
 222
 223         return snd_soc_component_update_bits(component, CS35L32_CLK_CTL,
 224                         CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val);
 225 }
 226
 227 static const struct snd_soc_component_driver soc_component_dev_cs35l32 = {
 228         .set_sysclk             = cs35l32_component_set_sysclk,
 229         .controls               = cs35l32_snd_controls,
 230         .num_controls           = ARRAY_SIZE(cs35l32_snd_controls),
 231         .dapm_widgets           = cs35l32_dapm_widgets,
 232         .num_dapm_widgets       = ARRAY_SIZE(cs35l32_dapm_widgets),
 233         .dapm_routes            = cs35l32_audio_map,
 234         .num_dapm_routes        = ARRAY_SIZE(cs35l32_audio_map),
 235         .idle_bias_on           = 1,
 236         .use_pmdown_time        = 1,
 237         .endianness             = 1,
 238         .non_legacy_dai_naming  = 1,
 239 };
 240
 241 /* Current and threshold powerup sequence Pg37 in datasheet */
 242 static const struct reg_sequence cs35l32_monitor_patch[] = {
 243
 244         { 0x00, 0x99 },
 245         { 0x48, 0x17 },
 246         { 0x49, 0x56 },
 247         { 0x43, 0x01 },
 248         { 0x3B, 0x62 },
 249         { 0x3C, 0x80 },
 250         { 0x00, 0x00 },
 251 };
 252
 253 static const struct regmap_config cs35l32_regmap = {
 254         .reg_bits = 8,
 255         .val_bits = 8,
 256
 257         .max_register = CS35L32_MAX_REGISTER,
 258         .reg_defaults = cs35l32_reg_defaults,
 259         .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
 260         .volatile_reg = cs35l32_volatile_register,
 261         .readable_reg = cs35l32_readable_register,
 262         .precious_reg = cs35l32_precious_register,
 263         .cache_type = REGCACHE_RBTREE,
 264
 265         .use_single_read = true,
 266         .use_single_write = true,
 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         cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(*cs35l32), GFP_KERNEL);
 359         if (!cs35l32)
 360                 return -ENOMEM;
 361
 362         i2c_set_clientdata(i2c_client, cs35l32);
 363
 364         cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
 365         if (IS_ERR(cs35l32->regmap)) {
 366                 ret = PTR_ERR(cs35l32->regmap);
 367                 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
 368                 return ret;
 369         }
 370
 371         if (pdata) {
 372                 cs35l32->pdata = *pdata;
 373         } else {
 374                 pdata = devm_kzalloc(&i2c_client->dev, sizeof(*pdata),
 375                                      GFP_KERNEL);
 376                 if (!pdata)
 377                         return -ENOMEM;
 378
 379                 if (i2c_client->dev.of_node) {
 380                         ret = cs35l32_handle_of_data(i2c_client,
 381                                                      &cs35l32->pdata);
 382                         if (ret != 0)
 383                                 return ret;
 384                 }
 385         }
 386
 387         for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
 388                 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
 389
 390         ret = devm_regulator_bulk_get(&i2c_client->dev,
 391                                       ARRAY_SIZE(cs35l32->supplies),
 392                                       cs35l32->supplies);
 393         if (ret != 0) {
 394                 dev_err(&i2c_client->dev,
 395                         "Failed to request supplies: %d\n", ret);
 396                 return ret;
 397         }
 398
 399         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 400                                     cs35l32->supplies);
 401         if (ret != 0) {
 402                 dev_err(&i2c_client->dev,
 403                         "Failed to enable supplies: %d\n", ret);
 404                 return ret;
 405         }
 406
 407         /* Reset the Device */
 408         cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
 409                 "reset", GPIOD_OUT_LOW);
 410         if (IS_ERR(cs35l32->reset_gpio))
 411                 return PTR_ERR(cs35l32->reset_gpio);
 412
 413         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 414
 415         /* initialize codec */
 416         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
 417         devid = (reg & 0xFF) << 12;
 418
 419         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, &reg);
 420         devid |= (reg & 0xFF) << 4;
 421
 422         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, &reg);
 423         devid |= (reg & 0xF0) >> 4;
 424
 425         if (devid != CS35L32_CHIP_ID) {
 426                 ret = -ENODEV;
 427                 dev_err(&i2c_client->dev,
 428                         "CS35L32 Device ID (%X). Expected %X\n",
 429                         devid, CS35L32_CHIP_ID);
 430                 return ret;
 431         }
 432
 433         ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
 434         if (ret < 0) {
 435                 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
 436                 return ret;
 437         }
 438
 439         ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
 440                                     ARRAY_SIZE(cs35l32_monitor_patch));
 441         if (ret < 0) {
 442                 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
 443                 return ret;
 444         }
 445
 446         dev_info(&i2c_client->dev,
 447                  "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
 448
 449         /* Setup VBOOST Management */
 450         if (cs35l32->pdata.boost_mng)
 451                 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
 452                                    CS35L32_BOOST_MASK,
 453                                 cs35l32->pdata.boost_mng);
 454
 455         /* Setup ADSP Format Config */
 456         if (cs35l32->pdata.sdout_share)
 457                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 458                                     CS35L32_ADSP_SHARE_MASK,
 459                                 cs35l32->pdata.sdout_share << 3);
 460
 461         /* Setup ADSP Data Configuration */
 462         if (cs35l32->pdata.sdout_datacfg)
 463                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 464                                    CS35L32_ADSP_DATACFG_MASK,
 465                                 cs35l32->pdata.sdout_datacfg << 4);
 466
 467         /* Setup Low Battery Recovery  */
 468         if (cs35l32->pdata.batt_recov)
 469                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 470                                    CS35L32_BATT_REC_MASK,
 471                                 cs35l32->pdata.batt_recov << 1);
 472
 473         /* Setup Low Battery Threshold */
 474         if (cs35l32->pdata.batt_thresh)
 475                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 476                                    CS35L32_BATT_THRESH_MASK,
 477                                 cs35l32->pdata.batt_thresh << 4);
 478
 479         /* Power down the AMP */
 480         regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
 481                             CS35L32_PDN_AMP);
 482
 483         /* Clear MCLK Error Bit since we don't have the clock yet */
 484         ret = regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
 485
 486         ret = devm_snd_soc_register_component(&i2c_client->dev,
 487                         &soc_component_dev_cs35l32, cs35l32_dai,
 488                         ARRAY_SIZE(cs35l32_dai));
 489         if (ret < 0)
 490                 goto err_disable;
 491
 492         return 0;
 493
 494 err_disable:
 495         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 496                                cs35l32->supplies);
 497         return ret;
 498 }
 499
 500 static int cs35l32_i2c_remove(struct i2c_client *i2c_client)
 501 {
 502         struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
 503
 504         /* Hold down reset */
 505         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 506
 507         return 0;
 508 }
 509
 510 #ifdef CONFIG_PM
 511 static int cs35l32_runtime_suspend(struct device *dev)
 512 {
 513         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 514
 515         regcache_cache_only(cs35l32->regmap, true);
 516         regcache_mark_dirty(cs35l32->regmap);
 517
 518         /* Hold down reset */
 519         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 520
 521         /* remove power */
 522         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 523                                cs35l32->supplies);
 524
 525         return 0;
 526 }
 527
 528 static int cs35l32_runtime_resume(struct device *dev)
 529 {
 530         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 531         int ret;
 532
 533         /* Enable power */
 534         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 535                                     cs35l32->supplies);
 536         if (ret != 0) {
 537                 dev_err(dev, "Failed to enable supplies: %d\n",
 538                         ret);
 539                 return ret;
 540         }
 541
 542         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 543
 544         regcache_cache_only(cs35l32->regmap, false);
 545         regcache_sync(cs35l32->regmap);
 546
 547         return 0;
 548 }
 549 #endif
 550
 551 static const struct dev_pm_ops cs35l32_runtime_pm = {
 552         SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
 553                            NULL)
 554 };
 555
 556 static const struct of_device_id cs35l32_of_match[] = {
 557         { .compatible = "cirrus,cs35l32", },
 558         {},
 559 };
 560 MODULE_DEVICE_TABLE(of, cs35l32_of_match);
 561
 562
 563 static const struct i2c_device_id cs35l32_id[] = {
 564         {"cs35l32", 0},
 565         {}
 566 };
 567
 568 MODULE_DEVICE_TABLE(i2c, cs35l32_id);
 569
 570 static struct i2c_driver cs35l32_i2c_driver = {
 571         .driver = {
 572                    .name = "cs35l32",
 573                    .pm = &cs35l32_runtime_pm,
 574                    .of_match_table = cs35l32_of_match,
 575                    },
 576         .id_table = cs35l32_id,
 577         .probe = cs35l32_i2c_probe,
 578         .remove = cs35l32_i2c_remove,
 579 };
 580
 581 module_i2c_driver(cs35l32_i2c_driver);
 582
 583 MODULE_DESCRIPTION("ASoC CS35L32 driver");
 584 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
 585 MODULE_LICENSE("GPL");