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_component *component;
  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_component *component = codec_dai->component;
 158
 159         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 160         case SND_SOC_DAIFMT_CBM_CFM:
 161                 snd_soc_component_update_bits(component, 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_component_update_bits(component, 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_component *component = dai->component;
 179
 180         return snd_soc_component_update_bits(component, 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_component_set_sysclk(struct snd_soc_component *component,
 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_component_update_bits(component, CS35L32_CLK_CTL,
 228                         CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val);
 229 }
 230
 231 static const struct snd_soc_component_driver soc_component_dev_cs35l32 = {
 232         .set_sysclk             = cs35l32_component_set_sysclk,
 233         .controls               = cs35l32_snd_controls,
 234         .num_controls           = ARRAY_SIZE(cs35l32_snd_controls),
 235         .dapm_widgets           = cs35l32_dapm_widgets,
 236         .num_dapm_widgets       = ARRAY_SIZE(cs35l32_dapm_widgets),
 237         .dapm_routes            = cs35l32_audio_map,
 238         .num_dapm_routes        = ARRAY_SIZE(cs35l32_audio_map),
 239         .idle_bias_on           = 1,
 240         .use_pmdown_time        = 1,
 241         .endianness             = 1,
 242         .non_legacy_dai_naming  = 1,
 243 };
 244
 245 /* Current and threshold powerup sequence Pg37 in datasheet */
 246 static const struct reg_sequence cs35l32_monitor_patch[] = {
 247
 248         { 0x00, 0x99 },
 249         { 0x48, 0x17 },
 250         { 0x49, 0x56 },
 251         { 0x43, 0x01 },
 252         { 0x3B, 0x62 },
 253         { 0x3C, 0x80 },
 254         { 0x00, 0x00 },
 255 };
 256
 257 static const struct regmap_config cs35l32_regmap = {
 258         .reg_bits = 8,
 259         .val_bits = 8,
 260
 261         .max_register = CS35L32_MAX_REGISTER,
 262         .reg_defaults = cs35l32_reg_defaults,
 263         .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults),
 264         .volatile_reg = cs35l32_volatile_register,
 265         .readable_reg = cs35l32_readable_register,
 266         .precious_reg = cs35l32_precious_register,
 267         .cache_type = REGCACHE_RBTREE,
 268 };
 269
 270 static int cs35l32_handle_of_data(struct i2c_client *i2c_client,
 271                                     struct cs35l32_platform_data *pdata)
 272 {
 273         struct device_node *np = i2c_client->dev.of_node;
 274         unsigned int val;
 275
 276         if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0)
 277                 pdata->sdout_share = val;
 278
 279         if (of_property_read_u32(np, "cirrus,boost-manager", &val))
 280                 val = -1u;
 281
 282         switch (val) {
 283         case CS35L32_BOOST_MGR_AUTO:
 284         case CS35L32_BOOST_MGR_AUTO_AUDIO:
 285         case CS35L32_BOOST_MGR_BYPASS:
 286         case CS35L32_BOOST_MGR_FIXED:
 287                 pdata->boost_mng = val;
 288                 break;
 289         case -1u:
 290         default:
 291                 dev_err(&i2c_client->dev,
 292                         "Wrong cirrus,boost-manager DT value %d\n", val);
 293                 pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS;
 294         }
 295
 296         if (of_property_read_u32(np, "cirrus,sdout-datacfg", &val))
 297                 val = -1u;
 298         switch (val) {
 299         case CS35L32_DATA_CFG_LR_VP:
 300         case CS35L32_DATA_CFG_LR_STAT:
 301         case CS35L32_DATA_CFG_LR:
 302         case CS35L32_DATA_CFG_LR_VPSTAT:
 303                 pdata->sdout_datacfg = val;
 304                 break;
 305         case -1u:
 306         default:
 307                 dev_err(&i2c_client->dev,
 308                         "Wrong cirrus,sdout-datacfg DT value %d\n", val);
 309                 pdata->sdout_datacfg = CS35L32_DATA_CFG_LR;
 310         }
 311
 312         if (of_property_read_u32(np, "cirrus,battery-threshold", &val))
 313                 val = -1u;
 314         switch (val) {
 315         case CS35L32_BATT_THRESH_3_1V:
 316         case CS35L32_BATT_THRESH_3_2V:
 317         case CS35L32_BATT_THRESH_3_3V:
 318         case CS35L32_BATT_THRESH_3_4V:
 319                 pdata->batt_thresh = val;
 320                 break;
 321         case -1u:
 322         default:
 323                 dev_err(&i2c_client->dev,
 324                         "Wrong cirrus,battery-threshold DT value %d\n", val);
 325                 pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V;
 326         }
 327
 328         if (of_property_read_u32(np, "cirrus,battery-recovery", &val))
 329                 val = -1u;
 330         switch (val) {
 331         case CS35L32_BATT_RECOV_3_1V:
 332         case CS35L32_BATT_RECOV_3_2V:
 333         case CS35L32_BATT_RECOV_3_3V:
 334         case CS35L32_BATT_RECOV_3_4V:
 335         case CS35L32_BATT_RECOV_3_5V:
 336         case CS35L32_BATT_RECOV_3_6V:
 337                 pdata->batt_recov = val;
 338                 break;
 339         case -1u:
 340         default:
 341                 dev_err(&i2c_client->dev,
 342                         "Wrong cirrus,battery-recovery DT value %d\n", val);
 343                 pdata->batt_recov = CS35L32_BATT_RECOV_3_4V;
 344         }
 345
 346         return 0;
 347 }
 348
 349 static int cs35l32_i2c_probe(struct i2c_client *i2c_client,
 350                                        const struct i2c_device_id *id)
 351 {
 352         struct cs35l32_private *cs35l32;
 353         struct cs35l32_platform_data *pdata =
 354                 dev_get_platdata(&i2c_client->dev);
 355         int ret, i;
 356         unsigned int devid = 0;
 357         unsigned int reg;
 358
 359         cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(*cs35l32), GFP_KERNEL);
 360         if (!cs35l32)
 361                 return -ENOMEM;
 362
 363         i2c_set_clientdata(i2c_client, cs35l32);
 364
 365         cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap);
 366         if (IS_ERR(cs35l32->regmap)) {
 367                 ret = PTR_ERR(cs35l32->regmap);
 368                 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret);
 369                 return ret;
 370         }
 371
 372         if (pdata) {
 373                 cs35l32->pdata = *pdata;
 374         } else {
 375                 pdata = devm_kzalloc(&i2c_client->dev, sizeof(*pdata),
 376                                      GFP_KERNEL);
 377                 if (!pdata)
 378                         return -ENOMEM;
 379
 380                 if (i2c_client->dev.of_node) {
 381                         ret = cs35l32_handle_of_data(i2c_client,
 382                                                      &cs35l32->pdata);
 383                         if (ret != 0)
 384                                 return ret;
 385                 }
 386         }
 387
 388         for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++)
 389                 cs35l32->supplies[i].supply = cs35l32_supply_names[i];
 390
 391         ret = devm_regulator_bulk_get(&i2c_client->dev,
 392                                       ARRAY_SIZE(cs35l32->supplies),
 393                                       cs35l32->supplies);
 394         if (ret != 0) {
 395                 dev_err(&i2c_client->dev,
 396                         "Failed to request supplies: %d\n", ret);
 397                 return ret;
 398         }
 399
 400         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 401                                     cs35l32->supplies);
 402         if (ret != 0) {
 403                 dev_err(&i2c_client->dev,
 404                         "Failed to enable supplies: %d\n", ret);
 405                 return ret;
 406         }
 407
 408         /* Reset the Device */
 409         cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev,
 410                 "reset", GPIOD_OUT_LOW);
 411         if (IS_ERR(cs35l32->reset_gpio))
 412                 return PTR_ERR(cs35l32->reset_gpio);
 413
 414         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 415
 416         /* initialize codec */
 417         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
 418         devid = (reg & 0xFF) << 12;
 419
 420         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, &reg);
 421         devid |= (reg & 0xFF) << 4;
 422
 423         ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, &reg);
 424         devid |= (reg & 0xF0) >> 4;
 425
 426         if (devid != CS35L32_CHIP_ID) {
 427                 ret = -ENODEV;
 428                 dev_err(&i2c_client->dev,
 429                         "CS35L32 Device ID (%X). Expected %X\n",
 430                         devid, CS35L32_CHIP_ID);
 431                 return ret;
 432         }
 433
 434         ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, &reg);
 435         if (ret < 0) {
 436                 dev_err(&i2c_client->dev, "Get Revision ID failed\n");
 437                 return ret;
 438         }
 439
 440         ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch,
 441                                     ARRAY_SIZE(cs35l32_monitor_patch));
 442         if (ret < 0) {
 443                 dev_err(&i2c_client->dev, "Failed to apply errata patch\n");
 444                 return ret;
 445         }
 446
 447         dev_info(&i2c_client->dev,
 448                  "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF);
 449
 450         /* Setup VBOOST Management */
 451         if (cs35l32->pdata.boost_mng)
 452                 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR,
 453                                    CS35L32_BOOST_MASK,
 454                                 cs35l32->pdata.boost_mng);
 455
 456         /* Setup ADSP Format Config */
 457         if (cs35l32->pdata.sdout_share)
 458                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 459                                     CS35L32_ADSP_SHARE_MASK,
 460                                 cs35l32->pdata.sdout_share << 3);
 461
 462         /* Setup ADSP Data Configuration */
 463         if (cs35l32->pdata.sdout_datacfg)
 464                 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL,
 465                                    CS35L32_ADSP_DATACFG_MASK,
 466                                 cs35l32->pdata.sdout_datacfg << 4);
 467
 468         /* Setup Low Battery Recovery  */
 469         if (cs35l32->pdata.batt_recov)
 470                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 471                                    CS35L32_BATT_REC_MASK,
 472                                 cs35l32->pdata.batt_recov << 1);
 473
 474         /* Setup Low Battery Threshold */
 475         if (cs35l32->pdata.batt_thresh)
 476                 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD,
 477                                    CS35L32_BATT_THRESH_MASK,
 478                                 cs35l32->pdata.batt_thresh << 4);
 479
 480         /* Power down the AMP */
 481         regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP,
 482                             CS35L32_PDN_AMP);
 483
 484         /* Clear MCLK Error Bit since we don't have the clock yet */
 485         ret = regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, &reg);
 486
 487         ret = devm_snd_soc_register_component(&i2c_client->dev,
 488                         &soc_component_dev_cs35l32, cs35l32_dai,
 489                         ARRAY_SIZE(cs35l32_dai));
 490         if (ret < 0)
 491                 goto err_disable;
 492
 493         return 0;
 494
 495 err_disable:
 496         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 497                                cs35l32->supplies);
 498         return ret;
 499 }
 500
 501 static int cs35l32_i2c_remove(struct i2c_client *i2c_client)
 502 {
 503         struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client);
 504
 505         /* Hold down reset */
 506         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 507
 508         return 0;
 509 }
 510
 511 #ifdef CONFIG_PM
 512 static int cs35l32_runtime_suspend(struct device *dev)
 513 {
 514         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 515
 516         regcache_cache_only(cs35l32->regmap, true);
 517         regcache_mark_dirty(cs35l32->regmap);
 518
 519         /* Hold down reset */
 520         gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 521
 522         /* remove power */
 523         regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
 524                                cs35l32->supplies);
 525
 526         return 0;
 527 }
 528
 529 static int cs35l32_runtime_resume(struct device *dev)
 530 {
 531         struct cs35l32_private *cs35l32 = dev_get_drvdata(dev);
 532         int ret;
 533
 534         /* Enable power */
 535         ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies),
 536                                     cs35l32->supplies);
 537         if (ret != 0) {
 538                 dev_err(dev, "Failed to enable supplies: %d\n",
 539                         ret);
 540                 return ret;
 541         }
 542
 543         gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 544
 545         regcache_cache_only(cs35l32->regmap, false);
 546         regcache_sync(cs35l32->regmap);
 547
 548         return 0;
 549 }
 550 #endif
 551
 552 static const struct dev_pm_ops cs35l32_runtime_pm = {
 553         SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume,
 554                            NULL)
 555 };
 556
 557 static const struct of_device_id cs35l32_of_match[] = {
 558         { .compatible = "cirrus,cs35l32", },
 559         {},
 560 };
 561 MODULE_DEVICE_TABLE(of, cs35l32_of_match);
 562
 563
 564 static const struct i2c_device_id cs35l32_id[] = {
 565         {"cs35l32", 0},
 566         {}
 567 };
 568
 569 MODULE_DEVICE_TABLE(i2c, cs35l32_id);
 570
 571 static struct i2c_driver cs35l32_i2c_driver = {
 572         .driver = {
 573                    .name = "cs35l32",
 574                    .pm = &cs35l32_runtime_pm,
 575                    .of_match_table = cs35l32_of_match,
 576                    },
 577         .id_table = cs35l32_id,
 578         .probe = cs35l32_i2c_probe,
 579         .remove = cs35l32_i2c_remove,
 580 };
 581
 582 module_i2c_driver(cs35l32_i2c_driver);
 583
 584 MODULE_DESCRIPTION("ASoC CS35L32 driver");
 585 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>");
 586 MODULE_LICENSE("GPL");