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 #include "cirrus_legacy.h"
  34
  35 #define CS35L32_NUM_SUPPLIES 2
  36 static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = {
  37         "VA",
  38         "VP",
  39 };
  40
  41 struct  cs35l32_private {
  42         struct regmap *regmap;
  43         struct snd_soc_component *component;
  44         struct regulator_bulk_data supplies[CS35L32_NUM_SUPPLIES];
  45         struct cs35l32_platform_data pdata;
  46         struct gpio_desc *reset_gpio;
  47 };
  48
  49 static const struct reg_default cs35l32_reg_defaults[] = {
  50
  51         { 0x06, 0x04 }, /* Power Ctl 1 */
  52         { 0x07, 0xE8 }, /* Power Ctl 2 */
  53         { 0x08, 0x40 }, /* Clock Ctl */
  54         { 0x09, 0x20 }, /* Low Battery Threshold */
  55         { 0x0A, 0x00 }, /* Voltage Monitor [RO] */
  56         { 0x0B, 0x40 }, /* Conv Peak Curr Protection CTL */
  57         { 0x0C, 0x07 }, /* IMON Scaling */
  58         { 0x0D, 0x03 }, /* Audio/LED Pwr Manager */
  59         { 0x0F, 0x20 }, /* Serial Port Control */
  60         { 0x10, 0x14 }, /* Class D Amp CTL */
  61         { 0x11, 0x00 }, /* Protection Release CTL */
  62         { 0x12, 0xFF }, /* Interrupt Mask 1 */
  63         { 0x13, 0xFF }, /* Interrupt Mask 2 */
  64         { 0x14, 0xFF }, /* Interrupt Mask 3 */
  65         { 0x19, 0x00 }, /* LED Flash Mode Current */
  66         { 0x1A, 0x00 }, /* LED Movie Mode Current */
  67         { 0x1B, 0x20 }, /* LED Flash Timer */
  68         { 0x1C, 0x00 }, /* LED Flash Inhibit Current */
  69 };
  70
  71 static bool cs35l32_readable_register(struct device *dev, unsigned int reg)
  72 {
  73         switch (reg) {
  74         case CS35L32_DEVID_AB ... CS35L32_AUDIO_LED_MNGR:
  75         case CS35L32_ADSP_CTL ... CS35L32_FLASH_INHIBIT:
  76                 return true;
  77         default:
  78                 return false;
  79         }
  80 }
  81
  82 static bool cs35l32_volatile_register(struct device *dev, unsigned int reg)
  83 {
  84         switch (reg) {
  85         case CS35L32_DEVID_AB ... CS35L32_REV_ID:
  86         case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
  87                 return true;
  88         default:
  89                 return false;
  90         }
  91 }
  92
  93 static bool cs35l32_precious_register(struct device *dev, unsigned int reg)
  94 {
  95         switch (reg) {
  96         case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
  97                 return true;
  98         default:
  99                 return false;
 100         }
 101 }
 102
 103 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0);
 104
 105 static const struct snd_kcontrol_new imon_ctl =
 106         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1);
 107
 108 static const struct snd_kcontrol_new vmon_ctl =
 109         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1);
 110
 111 static const struct snd_kcontrol_new vpmon_ctl =
 112         SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1);
 113
 114 static const struct snd_kcontrol_new cs35l32_snd_controls[] = {
 115         SOC_SINGLE_TLV("Speaker Volume", CS35L32_CLASSD_CTL,
 116                        3, 0x04, 1, classd_ctl_tlv),
 117         SOC_SINGLE("Zero Cross Switch", CS35L32_CLASSD_CTL, 2, 1, 0),
 118         SOC_SINGLE("Gain Manager Switch", CS35L32_AUDIO_LED_MNGR, 3, 1, 0),
 119 };
 120
 121 static const struct snd_soc_dapm_widget cs35l32_dapm_widgets[] = {
 122
 123         SND_SOC_DAPM_SUPPLY("BOOST", CS35L32_PWRCTL1, 2, 1, NULL, 0),
 124         SND_SOC_DAPM_OUT_DRV("Speaker", CS35L32_PWRCTL1, 7, 1, NULL, 0),
 125
 126         SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L32_PWRCTL2, 3, 1),
 127
 128         SND_SOC_DAPM_INPUT("VP"),
 129         SND_SOC_DAPM_INPUT("ISENSE"),
 130         SND_SOC_DAPM_INPUT("VSENSE"),
 131
 132         SND_SOC_DAPM_SWITCH("VMON ADC", CS35L32_PWRCTL2, 7, 1, &vmon_ctl),
 133         SND_SOC_DAPM_SWITCH("IMON ADC", CS35L32_PWRCTL2, 6, 1, &imon_ctl),
 134         SND_SOC_DAPM_SWITCH("VPMON ADC", CS35L32_PWRCTL2, 5, 1, &vpmon_ctl),
 135 };
 136
 137 static const struct snd_soc_dapm_route cs35l32_audio_map[] = {
 138
 139         {"Speaker", NULL, "BOOST"},
 140
 141         {"VMON ADC", NULL, "VSENSE"},
 142         {"IMON ADC", NULL, "ISENSE"},
 143         {"VPMON ADC", NULL, "VP"},
 144
 145         {"SDOUT", "Switch", "VMON ADC"},
 146         {"SDOUT",  "Switch", "IMON ADC"},
 147         {"SDOUT", "Switch", "VPMON ADC"},
 148
 149         {"Capture", NULL, "SDOUT"},
 150 };
 151
 152 static int cs35l32_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 153 {
 154         struct snd_soc_component *component = codec_dai->component;
 155
 156         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 157         case SND_SOC_DAIFMT_CBM_CFM:
 158                 snd_soc_component_update_bits(component, CS35L32_ADSP_CTL,
 159                                     CS35L32_ADSP_MASTER_MASK,
 160                                 CS35L32_ADSP_MASTER_MASK);
 161                 break;
 162         case SND_SOC_DAIFMT_CBS_CFS:
 163                 snd_soc_component_update_bits(component, CS35L32_ADSP_CTL,
 164                                     CS35L32_ADSP_MASTER_MASK, 0);
 165                 break;
 166         default:
 167                 return -EINVAL;
 168         }
 169
 170         return 0;
 171 }
 172
 173 static int cs35l32_set_tristate(struct snd_soc_dai *dai, int tristate)
 174 {
 175         struct snd_soc_component *component = dai->component;
 176
 177         return snd_soc_component_update_bits(component, CS35L32_PWRCTL2,
 178                                         CS35L32_SDOUT_3ST, tristate << 3);
 179 }
 180
 181 static const struct snd_soc_dai_ops cs35l32_ops = {
 182         .set_fmt = cs35l32_set_dai_fmt,
 183         .set_tristate = cs35l32_set_tristate,
 184 };
 185
 186 static struct snd_soc_dai_driver cs35l32_dai[] = {
 187         {
 188                 .name = "cs35l32-monitor",
 189                 .id = 0,
 190                 .capture = {
 191                         .stream_name = "Capture",
 192                         .channels_min = 2,
 193                         .channels_max = 2,
 194                         .rates = CS35L32_RATES,
 195                         .formats = CS35L32_FORMATS,
 196                 },
 197                 .ops = &cs35l32_ops,
 198                 .symmetric_rate = 1,
 199         }
 200 };
 201
 202 static int cs35l32_component_set_sysclk(struct snd_soc_component *component,
 203                               int clk_id, int source, unsigned int freq, int dir)
 204 {
 205         unsigned int val;
 206
 207         switch (freq) {
 208         case 6000000:
 209                 val = CS35L32_MCLK_RATIO;
 210                 break;
 211         case 12000000:
 212                 val = CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO;
 213                 break;
 214         case 6144000:
 215                 val = 0;
 216                 break;
 217         case 12288000:
 218                 val = CS35L32_MCLK_DIV2_MASK;
 219                 break;
 220         default:
 221                 return -EINVAL;
 222         }
 223
 224         return snd_soc_component_update_bits(component, CS35L32_CLK_CTL,
 225                         CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val);
 226 }
 227
 228 static const struct snd_soc_component_driver soc_component_dev_cs35l32 = {
 229         .set_sysclk             = cs35l32_component_set_sysclk,
 230         .controls               = cs35l32_snd_controls,
 231         .num_controls           = ARRAY_SIZE(cs35l32_snd_controls),
 232         .dapm_widgets           = cs35l32_dapm_widgets,
 233         .num_dapm_widgets       = ARRAY_SIZE(cs35l32_dapm_widgets),
 234         .dapm_routes            = cs35l32_audio_map,
 235         .num_dapm_routes        = ARRAY_SIZE(cs35l32_audio_map),
 236         .idle_bias_on           = 1,
 237         .use_pmdown_time        = 1,
 238         .endianness             = 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 {
 350         struct cs35l32_private *cs35l32;
 351         struct cs35l32_platform_data *pdata =
 352                 dev_get_platdata(&i2c_client->dev);
 353         int ret, i, devid;
 354         unsigned int reg;
 355
 356         cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(*cs35l32), GFP_KERNEL);
 357         if (!cs35l32)
 358                 return -ENOMEM;
 359
 360         i2c_set_clientdata(i2c_client, cs35l32);
 361
 362         cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
 363         if (IS_ERR(cs35l32->regmap)) {
 364                 ret = PTR_ERR(cs35l32->regmap);
 365                 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
 366                 return ret;
 367         }
 368
 369         if (pdata) {
 370                 cs35l32->pdata = *pdata;
 371         } else {
 372                 pdata = devm_kzalloc(&i2c_client->dev, sizeof(*pdata),
 373                                      GFP_KERNEL);
 374                 if (!pdata)
 375                         return -ENOMEM;
 376
 377                 if (i2c_client->dev.of_node) {
 378                         ret = cs35l32_handle_of_data(i2c_client,
 379                                                      &cs35l32->pdata);
 380                         if (ret != 0)
 381                                 return ret;
 382                 }
 383         }
 384
 385         for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
 386                 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
 387
 388         ret = devm_regulator_bulk_get(&i2c_client->dev,
 389                                       ARRAY_SIZE(cs35l32->supplies),
 390                                       cs35l32->supplies);
 391         if (ret != 0) {
 392                 dev_err(&i2c_client->dev,
 393                         "Failed to request supplies: %d\n", ret);
 394                 return ret;
 395         }
 396
 397         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 398                                     cs35l32->supplies);
 399         if (ret != 0) {
 400                 dev_err(&i2c_client->dev,
 401                         "Failed to enable supplies: %d\n", ret);
 402                 return ret;
 403         }
 404
 405         /* Reset the Device */
 406         cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
 407                 "reset", GPIOD_OUT_LOW);
 408         if (IS_ERR(cs35l32->reset_gpio)) {
 409                 ret = PTR_ERR(cs35l32->reset_gpio);
 410                 goto err_supplies;
 411         }
 412
 413         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 414
 415         /* initialize codec */
 416         devid = cirrus_read_device_id(cs35l32->regmap, CS35L32_DEVID_AB);
 417         if (devid < 0) {
 418                 ret = devid;
 419                 dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
 420                 goto err_disable;
 421         }
 422
 423         if (devid != CS35L32_CHIP_ID) {
 424                 ret = -ENODEV;
 425                 dev_err(&i2c_client->dev,
 426                         "CS35L32 Device ID (%X). Expected %X\n",
 427                         devid, CS35L32_CHIP_ID);
 428                 goto err_disable;
 429         }
 430
 431         ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
 432         if (ret < 0) {
 433                 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
 434                 goto err_disable;
 435         }
 436
 437         ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
 438                                     ARRAY_SIZE(cs35l32_monitor_patch));
 439         if (ret < 0) {
 440                 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
 441                 goto err_disable;
 442         }
 443
 444         dev_info(&i2c_client->dev,
 445                  "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
 446
 447         /* Setup VBOOST Management */
 448         if (cs35l32->pdata.boost_mng)
 449                 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
 450                                    CS35L32_BOOST_MASK,
 451                                 cs35l32->pdata.boost_mng);
 452
 453         /* Setup ADSP Format Config */
 454         if (cs35l32->pdata.sdout_share)
 455                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 456                                     CS35L32_ADSP_SHARE_MASK,
 457                                 cs35l32->pdata.sdout_share << 3);
 458
 459         /* Setup ADSP Data Configuration */
 460         if (cs35l32->pdata.sdout_datacfg)
 461                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 462                                    CS35L32_ADSP_DATACFG_MASK,
 463                                 cs35l32->pdata.sdout_datacfg << 4);
 464
 465         /* Setup Low Battery Recovery  */
 466         if (cs35l32->pdata.batt_recov)
 467                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 468                                    CS35L32_BATT_REC_MASK,
 469                                 cs35l32->pdata.batt_recov << 1);
 470
 471         /* Setup Low Battery Threshold */
 472         if (cs35l32->pdata.batt_thresh)
 473                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 474                                    CS35L32_BATT_THRESH_MASK,
 475                                 cs35l32->pdata.batt_thresh << 4);
 476
 477         /* Power down the AMP */
 478         regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
 479                             CS35L32_PDN_AMP);
 480
 481         /* Clear MCLK Error Bit since we don't have the clock yet */
 482         regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
 483
 484         ret = devm_snd_soc_register_component(&i2c_client->dev,
 485                         &soc_component_dev_cs35l32, cs35l32_dai,
 486                         ARRAY_SIZE(cs35l32_dai));
 487         if (ret < 0)
 488                 goto err_disable;
 489
 490         return 0;
 491
 492 err_disable:
 493         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 494 err_supplies:
 495         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 496                                cs35l32->supplies);
 497         return ret;
 498 }
 499
 500 static void 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
 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_new = 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");