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/version.h> 17 #include <linux/kernel.h> 18 #include <linux/init.h> 19 #include <linux/delay.h> 20 #include <linux/i2c.h> 21 #include <linux/gpio.h> 22 #include <linux/regmap.h> 23 #include <linux/slab.h> 24 #include <linux/platform_device.h> 25 #include <linux/regulator/consumer.h> 26 #include <linux/gpio/consumer.h> 27 #include <linux/of_device.h> 28 #include <sound/core.h> 29 #include <sound/pcm.h> 30 #include <sound/pcm_params.h> 31 #include <sound/soc.h> 32 #include <sound/soc-dapm.h> 33 #include <sound/initval.h> 34 #include <sound/tlv.h> 35 #include <dt-bindings/sound/cs35l32.h> 36 37 #include "cs35l32.h" 38 39 #define CS35L32_NUM_SUPPLIES 2 40 static const char *const cs35l32_supply_names[CS35L32_NUM_SUPPLIES] = { 41 "VA", 42 "VP", 43 }; 44 45 struct cs35l32_private { 46 struct regmap *regmap; 47 struct snd_soc_codec *codec; 48 struct regulator_bulk_data supplies[CS35L32_NUM_SUPPLIES]; 49 struct cs35l32_platform_data pdata; 50 struct gpio_desc *reset_gpio; 51 }; 52 53 static const struct reg_default cs35l32_reg_defaults[] = { 54 55 { 0x06, 0x04 }, /* Power Ctl 1 */ 56 { 0x07, 0xE8 }, /* Power Ctl 2 */ 57 { 0x08, 0x40 }, /* Clock Ctl */ 58 { 0x09, 0x20 }, /* Low Battery Threshold */ 59 { 0x0A, 0x00 }, /* Voltage Monitor [RO] */ 60 { 0x0B, 0x40 }, /* Conv Peak Curr Protection CTL */ 61 { 0x0C, 0x07 }, /* IMON Scaling */ 62 { 0x0D, 0x03 }, /* Audio/LED Pwr Manager */ 63 { 0x0F, 0x20 }, /* Serial Port Control */ 64 { 0x10, 0x14 }, /* Class D Amp CTL */ 65 { 0x11, 0x00 }, /* Protection Release CTL */ 66 { 0x12, 0xFF }, /* Interrupt Mask 1 */ 67 { 0x13, 0xFF }, /* Interrupt Mask 2 */ 68 { 0x14, 0xFF }, /* Interrupt Mask 3 */ 69 { 0x19, 0x00 }, /* LED Flash Mode Current */ 70 { 0x1A, 0x00 }, /* LED Movie Mode Current */ 71 { 0x1B, 0x20 }, /* LED Flash Timer */ 72 { 0x1C, 0x00 }, /* LED Flash Inhibit Current */ 73 }; 74 75 static bool cs35l32_readable_register(struct device *dev, unsigned int reg) 76 { 77 switch (reg) { 78 case CS35L32_DEVID_AB: 79 case CS35L32_DEVID_CD: 80 case CS35L32_DEVID_E: 81 case CS35L32_FAB_ID: 82 case CS35L32_REV_ID: 83 case CS35L32_PWRCTL1: 84 case CS35L32_PWRCTL2: 85 case CS35L32_CLK_CTL: 86 case CS35L32_BATT_THRESHOLD: 87 case CS35L32_VMON: 88 case CS35L32_BST_CPCP_CTL: 89 case CS35L32_IMON_SCALING: 90 case CS35L32_AUDIO_LED_MNGR: 91 case CS35L32_ADSP_CTL: 92 case CS35L32_CLASSD_CTL: 93 case CS35L32_PROTECT_CTL: 94 case CS35L32_INT_MASK_1: 95 case CS35L32_INT_MASK_2: 96 case CS35L32_INT_MASK_3: 97 case CS35L32_INT_STATUS_1: 98 case CS35L32_INT_STATUS_2: 99 case CS35L32_INT_STATUS_3: 100 case CS35L32_LED_STATUS: 101 case CS35L32_FLASH_MODE: 102 case CS35L32_MOVIE_MODE: 103 case CS35L32_FLASH_TIMER: 104 case CS35L32_FLASH_INHIBIT: 105 return true; 106 default: 107 return false; 108 } 109 } 110 111 static bool cs35l32_volatile_register(struct device *dev, unsigned int reg) 112 { 113 switch (reg) { 114 case CS35L32_DEVID_AB: 115 case CS35L32_DEVID_CD: 116 case CS35L32_DEVID_E: 117 case CS35L32_FAB_ID: 118 case CS35L32_REV_ID: 119 case CS35L32_INT_STATUS_1: 120 case CS35L32_INT_STATUS_2: 121 case CS35L32_INT_STATUS_3: 122 case CS35L32_LED_STATUS: 123 return true; 124 default: 125 return false; 126 } 127 } 128 129 static bool cs35l32_precious_register(struct device *dev, unsigned int reg) 130 { 131 switch (reg) { 132 case CS35L32_INT_STATUS_1: 133 case CS35L32_INT_STATUS_2: 134 case CS35L32_INT_STATUS_3: 135 case CS35L32_LED_STATUS: 136 return true; 137 default: 138 return false; 139 } 140 } 141 142 static DECLARE_TLV_DB_SCALE(classd_ctl_tlv, 900, 300, 0); 143 144 static const struct snd_kcontrol_new imon_ctl = 145 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 6, 1, 1); 146 147 static const struct snd_kcontrol_new vmon_ctl = 148 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 7, 1, 1); 149 150 static const struct snd_kcontrol_new vpmon_ctl = 151 SOC_DAPM_SINGLE("Switch", CS35L32_PWRCTL2, 5, 1, 1); 152 153 static const struct snd_kcontrol_new cs35l32_snd_controls[] = { 154 SOC_SINGLE_TLV("Speaker Volume", CS35L32_CLASSD_CTL, 155 3, 0x04, 1, classd_ctl_tlv), 156 SOC_SINGLE("Zero Cross Switch", CS35L32_CLASSD_CTL, 2, 1, 0), 157 SOC_SINGLE("Gain Manager Switch", CS35L32_AUDIO_LED_MNGR, 3, 1, 0), 158 }; 159 160 static const struct snd_soc_dapm_widget cs35l32_dapm_widgets[] = { 161 162 SND_SOC_DAPM_SUPPLY("BOOST", CS35L32_PWRCTL1, 2, 1, NULL, 0), 163 SND_SOC_DAPM_OUT_DRV("Speaker", CS35L32_PWRCTL1, 7, 1, NULL, 0), 164 165 SND_SOC_DAPM_AIF_OUT("SDOUT", NULL, 0, CS35L32_PWRCTL2, 3, 1), 166 167 SND_SOC_DAPM_INPUT("VP"), 168 SND_SOC_DAPM_INPUT("ISENSE"), 169 SND_SOC_DAPM_INPUT("VSENSE"), 170 171 SND_SOC_DAPM_SWITCH("VMON ADC", CS35L32_PWRCTL2, 7, 1, &vmon_ctl), 172 SND_SOC_DAPM_SWITCH("IMON ADC", CS35L32_PWRCTL2, 6, 1, &imon_ctl), 173 SND_SOC_DAPM_SWITCH("VPMON ADC", CS35L32_PWRCTL2, 5, 1, &vpmon_ctl), 174 }; 175 176 static const struct snd_soc_dapm_route cs35l32_audio_map[] = { 177 178 {"Speaker", NULL, "BOOST"}, 179 180 {"VMON ADC", NULL, "VSENSE"}, 181 {"IMON ADC", NULL, "ISENSE"}, 182 {"VPMON ADC", NULL, "VP"}, 183 184 {"SDOUT", "Switch", "VMON ADC"}, 185 {"SDOUT", "Switch", "IMON ADC"}, 186 {"SDOUT", "Switch", "VPMON ADC"}, 187 188 {"Capture", NULL, "SDOUT"}, 189 }; 190 191 static int cs35l32_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) 192 { 193 struct snd_soc_codec *codec = codec_dai->codec; 194 195 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 196 case SND_SOC_DAIFMT_CBM_CFM: 197 snd_soc_update_bits(codec, CS35L32_ADSP_CTL, 198 CS35L32_ADSP_MASTER_MASK, 199 CS35L32_ADSP_MASTER_MASK); 200 break; 201 case SND_SOC_DAIFMT_CBS_CFS: 202 snd_soc_update_bits(codec, CS35L32_ADSP_CTL, 203 CS35L32_ADSP_MASTER_MASK, 0); 204 break; 205 default: 206 return -EINVAL; 207 } 208 209 return 0; 210 } 211 212 static int cs35l32_set_tristate(struct snd_soc_dai *dai, int tristate) 213 { 214 struct snd_soc_codec *codec = dai->codec; 215 216 return snd_soc_update_bits(codec, CS35L32_PWRCTL2, 217 CS35L32_SDOUT_3ST, tristate << 3); 218 } 219 220 static const struct snd_soc_dai_ops cs35l32_ops = { 221 .set_fmt = cs35l32_set_dai_fmt, 222 .set_tristate = cs35l32_set_tristate, 223 }; 224 225 static struct snd_soc_dai_driver cs35l32_dai[] = { 226 { 227 .name = "cs35l32-monitor", 228 .id = 0, 229 .capture = { 230 .stream_name = "Capture", 231 .channels_min = 2, 232 .channels_max = 2, 233 .rates = CS35L32_RATES, 234 .formats = CS35L32_FORMATS, 235 }, 236 .ops = &cs35l32_ops, 237 .symmetric_rates = 1, 238 } 239 }; 240 241 static int cs35l32_codec_set_sysclk(struct snd_soc_codec *codec, 242 int clk_id, int source, unsigned int freq, int dir) 243 { 244 unsigned int val; 245 246 switch (freq) { 247 case 6000000: 248 val = CS35L32_MCLK_RATIO; 249 break; 250 case 12000000: 251 val = CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO; 252 break; 253 case 6144000: 254 val = 0; 255 break; 256 case 12288000: 257 val = CS35L32_MCLK_DIV2_MASK; 258 break; 259 default: 260 return -EINVAL; 261 } 262 263 return snd_soc_update_bits(codec, CS35L32_CLK_CTL, 264 CS35L32_MCLK_DIV2_MASK | CS35L32_MCLK_RATIO_MASK, val); 265 } 266 267 static const struct snd_soc_codec_driver soc_codec_dev_cs35l32 = { 268 .set_sysclk = cs35l32_codec_set_sysclk, 269 270 .dapm_widgets = cs35l32_dapm_widgets, 271 .num_dapm_widgets = ARRAY_SIZE(cs35l32_dapm_widgets), 272 .dapm_routes = cs35l32_audio_map, 273 .num_dapm_routes = ARRAY_SIZE(cs35l32_audio_map), 274 275 .controls = cs35l32_snd_controls, 276 .num_controls = ARRAY_SIZE(cs35l32_snd_controls), 277 }; 278 279 /* Current and threshold powerup sequence Pg37 in datasheet */ 280 static const struct reg_default cs35l32_monitor_patch[] = { 281 282 { 0x00, 0x99 }, 283 { 0x48, 0x17 }, 284 { 0x49, 0x56 }, 285 { 0x43, 0x01 }, 286 { 0x3B, 0x62 }, 287 { 0x3C, 0x80 }, 288 { 0x00, 0x00 }, 289 }; 290 291 static const struct regmap_config cs35l32_regmap = { 292 .reg_bits = 8, 293 .val_bits = 8, 294 295 .max_register = CS35L32_MAX_REGISTER, 296 .reg_defaults = cs35l32_reg_defaults, 297 .num_reg_defaults = ARRAY_SIZE(cs35l32_reg_defaults), 298 .volatile_reg = cs35l32_volatile_register, 299 .readable_reg = cs35l32_readable_register, 300 .precious_reg = cs35l32_precious_register, 301 .cache_type = REGCACHE_RBTREE, 302 }; 303 304 static int cs35l32_handle_of_data(struct i2c_client *i2c_client, 305 struct cs35l32_platform_data *pdata) 306 { 307 struct device_node *np = i2c_client->dev.of_node; 308 unsigned int val; 309 310 if (of_property_read_u32(np, "cirrus,sdout-share", &val) >= 0) 311 pdata->sdout_share = val; 312 313 of_property_read_u32(np, "cirrus,boost-manager", &val); 314 switch (val) { 315 case CS35L32_BOOST_MGR_AUTO: 316 case CS35L32_BOOST_MGR_AUTO_AUDIO: 317 case CS35L32_BOOST_MGR_BYPASS: 318 case CS35L32_BOOST_MGR_FIXED: 319 pdata->boost_mng = val; 320 break; 321 default: 322 dev_err(&i2c_client->dev, 323 "Wrong cirrus,boost-manager DT value %d\n", val); 324 pdata->boost_mng = CS35L32_BOOST_MGR_BYPASS; 325 } 326 327 of_property_read_u32(np, "cirrus,sdout-datacfg", &val); 328 switch (val) { 329 case CS35L32_DATA_CFG_LR_VP: 330 case CS35L32_DATA_CFG_LR_STAT: 331 case CS35L32_DATA_CFG_LR: 332 case CS35L32_DATA_CFG_LR_VPSTAT: 333 pdata->sdout_datacfg = val; 334 break; 335 default: 336 dev_err(&i2c_client->dev, 337 "Wrong cirrus,sdout-datacfg DT value %d\n", val); 338 pdata->sdout_datacfg = CS35L32_DATA_CFG_LR; 339 } 340 341 of_property_read_u32(np, "cirrus,battery-threshold", &val); 342 switch (val) { 343 case CS35L32_BATT_THRESH_3_1V: 344 case CS35L32_BATT_THRESH_3_2V: 345 case CS35L32_BATT_THRESH_3_3V: 346 case CS35L32_BATT_THRESH_3_4V: 347 pdata->batt_thresh = val; 348 break; 349 default: 350 dev_err(&i2c_client->dev, 351 "Wrong cirrus,battery-threshold DT value %d\n", val); 352 pdata->batt_thresh = CS35L32_BATT_THRESH_3_3V; 353 } 354 355 of_property_read_u32(np, "cirrus,battery-recovery", &val); 356 switch (val) { 357 case CS35L32_BATT_RECOV_3_1V: 358 case CS35L32_BATT_RECOV_3_2V: 359 case CS35L32_BATT_RECOV_3_3V: 360 case CS35L32_BATT_RECOV_3_4V: 361 case CS35L32_BATT_RECOV_3_5V: 362 case CS35L32_BATT_RECOV_3_6V: 363 pdata->batt_recov = val; 364 break; 365 default: 366 dev_err(&i2c_client->dev, 367 "Wrong cirrus,battery-recovery DT value %d\n", val); 368 pdata->batt_recov = CS35L32_BATT_RECOV_3_4V; 369 } 370 371 return 0; 372 } 373 374 static int cs35l32_i2c_probe(struct i2c_client *i2c_client, 375 const struct i2c_device_id *id) 376 { 377 struct cs35l32_private *cs35l32; 378 struct cs35l32_platform_data *pdata = 379 dev_get_platdata(&i2c_client->dev); 380 int ret, i; 381 unsigned int devid = 0; 382 unsigned int reg; 383 384 385 cs35l32 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs35l32_private), 386 GFP_KERNEL); 387 if (!cs35l32) { 388 dev_err(&i2c_client->dev, "could not allocate codec\n"); 389 return -ENOMEM; 390 } 391 392 i2c_set_clientdata(i2c_client, cs35l32); 393 394 cs35l32->regmap = devm_regmap_init_i2c(i2c_client, &cs35l32_regmap); 395 if (IS_ERR(cs35l32->regmap)) { 396 ret = PTR_ERR(cs35l32->regmap); 397 dev_err(&i2c_client->dev, "regmap_init() failed: %d\n", ret); 398 return ret; 399 } 400 401 if (pdata) { 402 cs35l32->pdata = *pdata; 403 } else { 404 pdata = devm_kzalloc(&i2c_client->dev, 405 sizeof(struct cs35l32_platform_data), 406 GFP_KERNEL); 407 if (!pdata) { 408 dev_err(&i2c_client->dev, "could not allocate pdata\n"); 409 return -ENOMEM; 410 } 411 if (i2c_client->dev.of_node) { 412 ret = cs35l32_handle_of_data(i2c_client, 413 &cs35l32->pdata); 414 if (ret != 0) 415 return ret; 416 } 417 } 418 419 for (i = 0; i < ARRAY_SIZE(cs35l32->supplies); i++) 420 cs35l32->supplies[i].supply = cs35l32_supply_names[i]; 421 422 ret = devm_regulator_bulk_get(&i2c_client->dev, 423 ARRAY_SIZE(cs35l32->supplies), 424 cs35l32->supplies); 425 if (ret != 0) { 426 dev_err(&i2c_client->dev, 427 "Failed to request supplies: %d\n", ret); 428 return ret; 429 } 430 431 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies), 432 cs35l32->supplies); 433 if (ret != 0) { 434 dev_err(&i2c_client->dev, 435 "Failed to enable supplies: %d\n", ret); 436 return ret; 437 } 438 439 /* Reset the Device */ 440 cs35l32->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev, 441 "reset", GPIOD_OUT_LOW); 442 if (IS_ERR(cs35l32->reset_gpio)) 443 return PTR_ERR(cs35l32->reset_gpio); 444 445 if (cs35l32->reset_gpio) 446 gpiod_set_value_cansleep(cs35l32->reset_gpio, 1); 447 448 /* initialize codec */ 449 ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, ®); 450 devid = (reg & 0xFF) << 12; 451 452 ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_CD, ®); 453 devid |= (reg & 0xFF) << 4; 454 455 ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_E, ®); 456 devid |= (reg & 0xF0) >> 4; 457 458 if (devid != CS35L32_CHIP_ID) { 459 ret = -ENODEV; 460 dev_err(&i2c_client->dev, 461 "CS35L32 Device ID (%X). Expected %X\n", 462 devid, CS35L32_CHIP_ID); 463 return ret; 464 } 465 466 ret = regmap_read(cs35l32->regmap, CS35L32_REV_ID, ®); 467 if (ret < 0) { 468 dev_err(&i2c_client->dev, "Get Revision ID failed\n"); 469 return ret; 470 } 471 472 ret = regmap_register_patch(cs35l32->regmap, cs35l32_monitor_patch, 473 ARRAY_SIZE(cs35l32_monitor_patch)); 474 if (ret < 0) { 475 dev_err(&i2c_client->dev, "Failed to apply errata patch\n"); 476 return ret; 477 } 478 479 dev_info(&i2c_client->dev, 480 "Cirrus Logic CS35L32, Revision: %02X\n", reg & 0xFF); 481 482 /* Setup VBOOST Management */ 483 if (cs35l32->pdata.boost_mng) 484 regmap_update_bits(cs35l32->regmap, CS35L32_AUDIO_LED_MNGR, 485 CS35L32_BOOST_MASK, 486 cs35l32->pdata.boost_mng); 487 488 /* Setup ADSP Format Config */ 489 if (cs35l32->pdata.sdout_share) 490 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL, 491 CS35L32_ADSP_SHARE_MASK, 492 cs35l32->pdata.sdout_share << 3); 493 494 /* Setup ADSP Data Configuration */ 495 if (cs35l32->pdata.sdout_datacfg) 496 regmap_update_bits(cs35l32->regmap, CS35L32_ADSP_CTL, 497 CS35L32_ADSP_DATACFG_MASK, 498 cs35l32->pdata.sdout_datacfg << 4); 499 500 /* Setup Low Battery Recovery */ 501 if (cs35l32->pdata.batt_recov) 502 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD, 503 CS35L32_BATT_REC_MASK, 504 cs35l32->pdata.batt_recov << 1); 505 506 /* Setup Low Battery Threshold */ 507 if (cs35l32->pdata.batt_thresh) 508 regmap_update_bits(cs35l32->regmap, CS35L32_BATT_THRESHOLD, 509 CS35L32_BATT_THRESH_MASK, 510 cs35l32->pdata.batt_thresh << 4); 511 512 /* Power down the AMP */ 513 regmap_update_bits(cs35l32->regmap, CS35L32_PWRCTL1, CS35L32_PDN_AMP, 514 CS35L32_PDN_AMP); 515 516 /* Clear MCLK Error Bit since we don't have the clock yet */ 517 ret = regmap_read(cs35l32->regmap, CS35L32_INT_STATUS_1, ®); 518 519 ret = snd_soc_register_codec(&i2c_client->dev, 520 &soc_codec_dev_cs35l32, cs35l32_dai, 521 ARRAY_SIZE(cs35l32_dai)); 522 if (ret < 0) 523 goto err_disable; 524 525 return 0; 526 527 err_disable: 528 regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies), 529 cs35l32->supplies); 530 return ret; 531 } 532 533 static int cs35l32_i2c_remove(struct i2c_client *i2c_client) 534 { 535 struct cs35l32_private *cs35l32 = i2c_get_clientdata(i2c_client); 536 537 snd_soc_unregister_codec(&i2c_client->dev); 538 539 /* Hold down reset */ 540 if (cs35l32->reset_gpio) 541 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0); 542 543 return 0; 544 } 545 546 #ifdef CONFIG_PM 547 static int cs35l32_runtime_suspend(struct device *dev) 548 { 549 struct cs35l32_private *cs35l32 = dev_get_drvdata(dev); 550 551 regcache_cache_only(cs35l32->regmap, true); 552 regcache_mark_dirty(cs35l32->regmap); 553 554 /* Hold down reset */ 555 if (cs35l32->reset_gpio) 556 gpiod_set_value_cansleep(cs35l32->reset_gpio, 0); 557 558 /* remove power */ 559 regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies), 560 cs35l32->supplies); 561 562 return 0; 563 } 564 565 static int cs35l32_runtime_resume(struct device *dev) 566 { 567 struct cs35l32_private *cs35l32 = dev_get_drvdata(dev); 568 int ret; 569 570 /* Enable power */ 571 ret = regulator_bulk_enable(ARRAY_SIZE(cs35l32->supplies), 572 cs35l32->supplies); 573 if (ret != 0) { 574 dev_err(dev, "Failed to enable supplies: %d\n", 575 ret); 576 return ret; 577 } 578 579 if (cs35l32->reset_gpio) 580 gpiod_set_value_cansleep(cs35l32->reset_gpio, 1); 581 582 regcache_cache_only(cs35l32->regmap, false); 583 regcache_sync(cs35l32->regmap); 584 585 return 0; 586 } 587 #endif 588 589 static const struct dev_pm_ops cs35l32_runtime_pm = { 590 SET_RUNTIME_PM_OPS(cs35l32_runtime_suspend, cs35l32_runtime_resume, 591 NULL) 592 }; 593 594 static const struct of_device_id cs35l32_of_match[] = { 595 { .compatible = "cirrus,cs35l32", }, 596 {}, 597 }; 598 MODULE_DEVICE_TABLE(of, cs35l32_of_match); 599 600 601 static const struct i2c_device_id cs35l32_id[] = { 602 {"cs35l32", 0}, 603 {} 604 }; 605 606 MODULE_DEVICE_TABLE(i2c, cs35l32_id); 607 608 static struct i2c_driver cs35l32_i2c_driver = { 609 .driver = { 610 .name = "cs35l32", 611 .owner = THIS_MODULE, 612 .pm = &cs35l32_runtime_pm, 613 .of_match_table = cs35l32_of_match, 614 }, 615 .id_table = cs35l32_id, 616 .probe = cs35l32_i2c_probe, 617 .remove = cs35l32_i2c_remove, 618 }; 619 620 module_i2c_driver(cs35l32_i2c_driver); 621 622 MODULE_DESCRIPTION("ASoC CS35L32 driver"); 623 MODULE_AUTHOR("Brian Austin, Cirrus Logic Inc, <brian.austin@cirrus.com>"); 624 MODULE_LICENSE("GPL"); 625