1/* 2 * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM 3 * and audio CODEC devices 4 * 5 * Copyright (C) 2005-2006 Texas Instruments, Inc. 6 * 7 * Modifications to defer interrupt handling to a kernel thread: 8 * Copyright (C) 2006 MontaVista Software, Inc. 9 * 10 * Based on tlv320aic23.c: 11 * Copyright (c) by Kai Svahn <kai.svahn@nokia.com> 12 * 13 * Code cleanup and modifications to IRQ handler. 14 * by syed khasim <x0khasim@ti.com> 15 * 16 * This program is free software; you can redistribute it and/or modify 17 * it under the terms of the GNU General Public License as published by 18 * the Free Software Foundation; either version 2 of the License, or 19 * (at your option) any later version. 20 * 21 * This program is distributed in the hope that it will be useful, 22 * but WITHOUT ANY WARRANTY; without even the implied warranty of 23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 24 * GNU General Public License for more details. 25 * 26 * You should have received a copy of the GNU General Public License 27 * along with this program; if not, write to the Free Software 28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 29 */ 30 31#include <linux/init.h> 32#include <linux/mutex.h> 33#include <linux/module.h> 34#include <linux/platform_device.h> 35#include <linux/regmap.h> 36#include <linux/clk.h> 37#include <linux/err.h> 38#include <linux/device.h> 39#include <linux/of.h> 40#include <linux/of_irq.h> 41#include <linux/of_platform.h> 42#include <linux/irq.h> 43#include <linux/irqdomain.h> 44 45#include <linux/regulator/machine.h> 46 47#include <linux/i2c.h> 48#include <linux/i2c/twl.h> 49 50/* Register descriptions for audio */ 51#include <linux/mfd/twl4030-audio.h> 52 53#include "twl-core.h" 54 55/* 56 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power 57 * Management and System Companion Device" chips originally designed for 58 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, 59 * often at around 3 Mbit/sec, including for interrupt handling. 60 * 61 * This driver core provides genirq support for the interrupts emitted, 62 * by the various modules, and exports register access primitives. 63 * 64 * FIXME this driver currently requires use of the first interrupt line 65 * (and associated registers). 66 */ 67 68#define DRIVER_NAME "twl" 69 70/* Triton Core internal information (BEGIN) */ 71 72/* Base Address defns for twl4030_map[] */ 73 74/* subchip/slave 0 - USB ID */ 75#define TWL4030_BASEADD_USB 0x0000 76 77/* subchip/slave 1 - AUD ID */ 78#define TWL4030_BASEADD_AUDIO_VOICE 0x0000 79#define TWL4030_BASEADD_GPIO 0x0098 80#define TWL4030_BASEADD_INTBR 0x0085 81#define TWL4030_BASEADD_PIH 0x0080 82#define TWL4030_BASEADD_TEST 0x004C 83 84/* subchip/slave 2 - AUX ID */ 85#define TWL4030_BASEADD_INTERRUPTS 0x00B9 86#define TWL4030_BASEADD_LED 0x00EE 87#define TWL4030_BASEADD_MADC 0x0000 88#define TWL4030_BASEADD_MAIN_CHARGE 0x0074 89#define TWL4030_BASEADD_PRECHARGE 0x00AA 90#define TWL4030_BASEADD_PWM 0x00F8 91#define TWL4030_BASEADD_KEYPAD 0x00D2 92 93#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ 94#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's 95 one */ 96 97/* subchip/slave 3 - POWER ID */ 98#define TWL4030_BASEADD_BACKUP 0x0014 99#define TWL4030_BASEADD_INT 0x002E 100#define TWL4030_BASEADD_PM_MASTER 0x0036 101 102#define TWL4030_BASEADD_PM_RECEIVER 0x005B 103#define TWL4030_DCDC_GLOBAL_CFG 0x06 104#define SMARTREFLEX_ENABLE BIT(3) 105 106#define TWL4030_BASEADD_RTC 0x001C 107#define TWL4030_BASEADD_SECURED_REG 0x0000 108 109/* Triton Core internal information (END) */ 110 111 112/* subchip/slave 0 0x48 - POWER */ 113#define TWL6030_BASEADD_RTC 0x0000 114#define TWL6030_BASEADD_SECURED_REG 0x0017 115#define TWL6030_BASEADD_PM_MASTER 0x001F 116#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ 117#define TWL6030_BASEADD_PM_MISC 0x00E2 118#define TWL6030_BASEADD_PM_PUPD 0x00F0 119 120/* subchip/slave 1 0x49 - FEATURE */ 121#define TWL6030_BASEADD_USB 0x0000 122#define TWL6030_BASEADD_GPADC_CTRL 0x002E 123#define TWL6030_BASEADD_AUX 0x0090 124#define TWL6030_BASEADD_PWM 0x00BA 125#define TWL6030_BASEADD_GASGAUGE 0x00C0 126#define TWL6030_BASEADD_PIH 0x00D0 127#define TWL6030_BASEADD_CHARGER 0x00E0 128#define TWL6032_BASEADD_CHARGER 0x00DA 129#define TWL6030_BASEADD_LED 0x00F4 130 131/* subchip/slave 2 0x4A - DFT */ 132#define TWL6030_BASEADD_DIEID 0x00C0 133 134/* subchip/slave 3 0x4B - AUDIO */ 135#define TWL6030_BASEADD_AUDIO 0x0000 136#define TWL6030_BASEADD_RSV 0x0000 137#define TWL6030_BASEADD_ZERO 0x0000 138 139/* Few power values */ 140#define R_CFG_BOOT 0x05 141 142/* some fields in R_CFG_BOOT */ 143#define HFCLK_FREQ_19p2_MHZ (1 << 0) 144#define HFCLK_FREQ_26_MHZ (2 << 0) 145#define HFCLK_FREQ_38p4_MHZ (3 << 0) 146#define HIGH_PERF_SQ (1 << 3) 147#define CK32K_LOWPWR_EN (1 << 7) 148 149/*----------------------------------------------------------------------*/ 150 151/* Structure for each TWL4030/TWL6030 Slave */ 152struct twl_client { 153 struct i2c_client *client; 154 struct regmap *regmap; 155}; 156 157/* mapping the module id to slave id and base address */ 158struct twl_mapping { 159 unsigned char sid; /* Slave ID */ 160 unsigned char base; /* base address */ 161}; 162 163struct twl_private { 164 bool ready; /* The core driver is ready to be used */ 165 u32 twl_idcode; /* TWL IDCODE Register value */ 166 unsigned int twl_id; 167 168 struct twl_mapping *twl_map; 169 struct twl_client *twl_modules; 170}; 171 172static struct twl_private *twl_priv; 173 174static struct twl_mapping twl4030_map[] = { 175 /* 176 * NOTE: don't change this table without updating the 177 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 178 * so they continue to match the order in this table. 179 */ 180 181 /* Common IPs */ 182 { 0, TWL4030_BASEADD_USB }, 183 { 1, TWL4030_BASEADD_PIH }, 184 { 2, TWL4030_BASEADD_MAIN_CHARGE }, 185 { 3, TWL4030_BASEADD_PM_MASTER }, 186 { 3, TWL4030_BASEADD_PM_RECEIVER }, 187 188 { 3, TWL4030_BASEADD_RTC }, 189 { 2, TWL4030_BASEADD_PWM }, 190 { 2, TWL4030_BASEADD_LED }, 191 { 3, TWL4030_BASEADD_SECURED_REG }, 192 193 /* TWL4030 specific IPs */ 194 { 1, TWL4030_BASEADD_AUDIO_VOICE }, 195 { 1, TWL4030_BASEADD_GPIO }, 196 { 1, TWL4030_BASEADD_INTBR }, 197 { 1, TWL4030_BASEADD_TEST }, 198 { 2, TWL4030_BASEADD_KEYPAD }, 199 200 { 2, TWL4030_BASEADD_MADC }, 201 { 2, TWL4030_BASEADD_INTERRUPTS }, 202 { 2, TWL4030_BASEADD_PRECHARGE }, 203 { 3, TWL4030_BASEADD_BACKUP }, 204 { 3, TWL4030_BASEADD_INT }, 205 206 { 2, TWL5031_BASEADD_ACCESSORY }, 207 { 2, TWL5031_BASEADD_INTERRUPTS }, 208}; 209 210static const struct reg_default twl4030_49_defaults[] = { 211 /* Audio Registers */ 212 { 0x01, 0x00}, /* CODEC_MODE */ 213 { 0x02, 0x00}, /* OPTION */ 214 /* 0x03 Unused */ 215 { 0x04, 0x00}, /* MICBIAS_CTL */ 216 { 0x05, 0x00}, /* ANAMICL */ 217 { 0x06, 0x00}, /* ANAMICR */ 218 { 0x07, 0x00}, /* AVADC_CTL */ 219 { 0x08, 0x00}, /* ADCMICSEL */ 220 { 0x09, 0x00}, /* DIGMIXING */ 221 { 0x0a, 0x0f}, /* ATXL1PGA */ 222 { 0x0b, 0x0f}, /* ATXR1PGA */ 223 { 0x0c, 0x0f}, /* AVTXL2PGA */ 224 { 0x0d, 0x0f}, /* AVTXR2PGA */ 225 { 0x0e, 0x00}, /* AUDIO_IF */ 226 { 0x0f, 0x00}, /* VOICE_IF */ 227 { 0x10, 0x3f}, /* ARXR1PGA */ 228 { 0x11, 0x3f}, /* ARXL1PGA */ 229 { 0x12, 0x3f}, /* ARXR2PGA */ 230 { 0x13, 0x3f}, /* ARXL2PGA */ 231 { 0x14, 0x25}, /* VRXPGA */ 232 { 0x15, 0x00}, /* VSTPGA */ 233 { 0x16, 0x00}, /* VRX2ARXPGA */ 234 { 0x17, 0x00}, /* AVDAC_CTL */ 235 { 0x18, 0x00}, /* ARX2VTXPGA */ 236 { 0x19, 0x32}, /* ARXL1_APGA_CTL*/ 237 { 0x1a, 0x32}, /* ARXR1_APGA_CTL*/ 238 { 0x1b, 0x32}, /* ARXL2_APGA_CTL*/ 239 { 0x1c, 0x32}, /* ARXR2_APGA_CTL*/ 240 { 0x1d, 0x00}, /* ATX2ARXPGA */ 241 { 0x1e, 0x00}, /* BT_IF */ 242 { 0x1f, 0x55}, /* BTPGA */ 243 { 0x20, 0x00}, /* BTSTPGA */ 244 { 0x21, 0x00}, /* EAR_CTL */ 245 { 0x22, 0x00}, /* HS_SEL */ 246 { 0x23, 0x00}, /* HS_GAIN_SET */ 247 { 0x24, 0x00}, /* HS_POPN_SET */ 248 { 0x25, 0x00}, /* PREDL_CTL */ 249 { 0x26, 0x00}, /* PREDR_CTL */ 250 { 0x27, 0x00}, /* PRECKL_CTL */ 251 { 0x28, 0x00}, /* PRECKR_CTL */ 252 { 0x29, 0x00}, /* HFL_CTL */ 253 { 0x2a, 0x00}, /* HFR_CTL */ 254 { 0x2b, 0x05}, /* ALC_CTL */ 255 { 0x2c, 0x00}, /* ALC_SET1 */ 256 { 0x2d, 0x00}, /* ALC_SET2 */ 257 { 0x2e, 0x00}, /* BOOST_CTL */ 258 { 0x2f, 0x00}, /* SOFTVOL_CTL */ 259 { 0x30, 0x13}, /* DTMF_FREQSEL */ 260 { 0x31, 0x00}, /* DTMF_TONEXT1H */ 261 { 0x32, 0x00}, /* DTMF_TONEXT1L */ 262 { 0x33, 0x00}, /* DTMF_TONEXT2H */ 263 { 0x34, 0x00}, /* DTMF_TONEXT2L */ 264 { 0x35, 0x79}, /* DTMF_TONOFF */ 265 { 0x36, 0x11}, /* DTMF_WANONOFF */ 266 { 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */ 267 { 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */ 268 { 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */ 269 { 0x3a, 0x06}, /* APLL_CTL */ 270 { 0x3b, 0x00}, /* DTMF_CTL */ 271 { 0x3c, 0x44}, /* DTMF_PGA_CTL2 (0x3C) */ 272 { 0x3d, 0x69}, /* DTMF_PGA_CTL1 (0x3D) */ 273 { 0x3e, 0x00}, /* MISC_SET_1 */ 274 { 0x3f, 0x00}, /* PCMBTMUX */ 275 /* 0x40 - 0x42 Unused */ 276 { 0x43, 0x00}, /* RX_PATH_SEL */ 277 { 0x44, 0x32}, /* VDL_APGA_CTL */ 278 { 0x45, 0x00}, /* VIBRA_CTL */ 279 { 0x46, 0x00}, /* VIBRA_SET */ 280 { 0x47, 0x00}, /* VIBRA_PWM_SET */ 281 { 0x48, 0x00}, /* ANAMIC_GAIN */ 282 { 0x49, 0x00}, /* MISC_SET_2 */ 283 /* End of Audio Registers */ 284}; 285 286static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg) 287{ 288 switch (reg) { 289 case 0x00: 290 case 0x03: 291 case 0x40: 292 case 0x41: 293 case 0x42: 294 return false; 295 default: 296 return true; 297 } 298} 299 300static const struct regmap_range twl4030_49_volatile_ranges[] = { 301 regmap_reg_range(TWL4030_BASEADD_TEST, 0xff), 302}; 303 304static const struct regmap_access_table twl4030_49_volatile_table = { 305 .yes_ranges = twl4030_49_volatile_ranges, 306 .n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges), 307}; 308 309static const struct regmap_config twl4030_regmap_config[4] = { 310 { 311 /* Address 0x48 */ 312 .reg_bits = 8, 313 .val_bits = 8, 314 .max_register = 0xff, 315 }, 316 { 317 /* Address 0x49 */ 318 .reg_bits = 8, 319 .val_bits = 8, 320 .max_register = 0xff, 321 322 .readable_reg = twl4030_49_nop_reg, 323 .writeable_reg = twl4030_49_nop_reg, 324 325 .volatile_table = &twl4030_49_volatile_table, 326 327 .reg_defaults = twl4030_49_defaults, 328 .num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults), 329 .cache_type = REGCACHE_RBTREE, 330 }, 331 { 332 /* Address 0x4a */ 333 .reg_bits = 8, 334 .val_bits = 8, 335 .max_register = 0xff, 336 }, 337 { 338 /* Address 0x4b */ 339 .reg_bits = 8, 340 .val_bits = 8, 341 .max_register = 0xff, 342 }, 343}; 344 345static struct twl_mapping twl6030_map[] = { 346 /* 347 * NOTE: don't change this table without updating the 348 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 349 * so they continue to match the order in this table. 350 */ 351 352 /* Common IPs */ 353 { 1, TWL6030_BASEADD_USB }, 354 { 1, TWL6030_BASEADD_PIH }, 355 { 1, TWL6030_BASEADD_CHARGER }, 356 { 0, TWL6030_BASEADD_PM_MASTER }, 357 { 0, TWL6030_BASEADD_PM_SLAVE_MISC }, 358 359 { 0, TWL6030_BASEADD_RTC }, 360 { 1, TWL6030_BASEADD_PWM }, 361 { 1, TWL6030_BASEADD_LED }, 362 { 0, TWL6030_BASEADD_SECURED_REG }, 363 364 /* TWL6030 specific IPs */ 365 { 0, TWL6030_BASEADD_ZERO }, 366 { 1, TWL6030_BASEADD_ZERO }, 367 { 2, TWL6030_BASEADD_ZERO }, 368 { 1, TWL6030_BASEADD_GPADC_CTRL }, 369 { 1, TWL6030_BASEADD_GASGAUGE }, 370}; 371 372static const struct regmap_config twl6030_regmap_config[3] = { 373 { 374 /* Address 0x48 */ 375 .reg_bits = 8, 376 .val_bits = 8, 377 .max_register = 0xff, 378 }, 379 { 380 /* Address 0x49 */ 381 .reg_bits = 8, 382 .val_bits = 8, 383 .max_register = 0xff, 384 }, 385 { 386 /* Address 0x4a */ 387 .reg_bits = 8, 388 .val_bits = 8, 389 .max_register = 0xff, 390 }, 391}; 392 393/*----------------------------------------------------------------------*/ 394 395static inline int twl_get_num_slaves(void) 396{ 397 if (twl_class_is_4030()) 398 return 4; /* TWL4030 class have four slave address */ 399 else 400 return 3; /* TWL6030 class have three slave address */ 401} 402 403static inline int twl_get_last_module(void) 404{ 405 if (twl_class_is_4030()) 406 return TWL4030_MODULE_LAST; 407 else 408 return TWL6030_MODULE_LAST; 409} 410 411/* Exported Functions */ 412 413unsigned int twl_rev(void) 414{ 415 return twl_priv ? twl_priv->twl_id : 0; 416} 417EXPORT_SYMBOL(twl_rev); 418 419/** 420 * twl_get_regmap - Get the regmap associated with the given module 421 * @mod_no: module number 422 * 423 * Returns the regmap pointer or NULL in case of failure. 424 */ 425static struct regmap *twl_get_regmap(u8 mod_no) 426{ 427 int sid; 428 struct twl_client *twl; 429 430 if (unlikely(!twl_priv || !twl_priv->ready)) { 431 pr_err("%s: not initialized\n", DRIVER_NAME); 432 return NULL; 433 } 434 if (unlikely(mod_no >= twl_get_last_module())) { 435 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 436 return NULL; 437 } 438 439 sid = twl_priv->twl_map[mod_no].sid; 440 twl = &twl_priv->twl_modules[sid]; 441 442 return twl->regmap; 443} 444 445/** 446 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 447 * @mod_no: module number 448 * @value: an array of num_bytes+1 containing data to write 449 * @reg: register address (just offset will do) 450 * @num_bytes: number of bytes to transfer 451 * 452 * Returns the result of operation - 0 is success 453 */ 454int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 455{ 456 struct regmap *regmap = twl_get_regmap(mod_no); 457 int ret; 458 459 if (!regmap) 460 return -EPERM; 461 462 ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg, 463 value, num_bytes); 464 465 if (ret) 466 pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n", 467 DRIVER_NAME, mod_no, reg, num_bytes); 468 469 return ret; 470} 471EXPORT_SYMBOL(twl_i2c_write); 472 473/** 474 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 475 * @mod_no: module number 476 * @value: an array of num_bytes containing data to be read 477 * @reg: register address (just offset will do) 478 * @num_bytes: number of bytes to transfer 479 * 480 * Returns result of operation - num_bytes is success else failure. 481 */ 482int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 483{ 484 struct regmap *regmap = twl_get_regmap(mod_no); 485 int ret; 486 487 if (!regmap) 488 return -EPERM; 489 490 ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg, 491 value, num_bytes); 492 493 if (ret) 494 pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n", 495 DRIVER_NAME, mod_no, reg, num_bytes); 496 497 return ret; 498} 499EXPORT_SYMBOL(twl_i2c_read); 500 501/** 502 * twl_regcache_bypass - Configure the regcache bypass for the regmap associated 503 * with the module 504 * @mod_no: module number 505 * @enable: Regcache bypass state 506 * 507 * Returns 0 else failure. 508 */ 509int twl_set_regcache_bypass(u8 mod_no, bool enable) 510{ 511 struct regmap *regmap = twl_get_regmap(mod_no); 512 513 if (!regmap) 514 return -EPERM; 515 516 regcache_cache_bypass(regmap, enable); 517 518 return 0; 519} 520EXPORT_SYMBOL(twl_set_regcache_bypass); 521 522/*----------------------------------------------------------------------*/ 523 524/** 525 * twl_read_idcode_register - API to read the IDCODE register. 526 * 527 * Unlocks the IDCODE register and read the 32 bit value. 528 */ 529static int twl_read_idcode_register(void) 530{ 531 int err; 532 533 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, 534 REG_UNLOCK_TEST_REG); 535 if (err) { 536 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); 537 goto fail; 538 } 539 540 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode), 541 REG_IDCODE_7_0, 4); 542 if (err) { 543 pr_err("TWL4030: unable to read IDCODE -%d\n", err); 544 goto fail; 545 } 546 547 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); 548 if (err) 549 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); 550fail: 551 return err; 552} 553 554/** 555 * twl_get_type - API to get TWL Si type. 556 * 557 * Api to get the TWL Si type from IDCODE value. 558 */ 559int twl_get_type(void) 560{ 561 return TWL_SIL_TYPE(twl_priv->twl_idcode); 562} 563EXPORT_SYMBOL_GPL(twl_get_type); 564 565/** 566 * twl_get_version - API to get TWL Si version. 567 * 568 * Api to get the TWL Si version from IDCODE value. 569 */ 570int twl_get_version(void) 571{ 572 return TWL_SIL_REV(twl_priv->twl_idcode); 573} 574EXPORT_SYMBOL_GPL(twl_get_version); 575 576/** 577 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate. 578 * 579 * Api to get the TWL HFCLK rate based on BOOT_CFG register. 580 */ 581int twl_get_hfclk_rate(void) 582{ 583 u8 ctrl; 584 int rate; 585 586 twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT); 587 588 switch (ctrl & 0x3) { 589 case HFCLK_FREQ_19p2_MHZ: 590 rate = 19200000; 591 break; 592 case HFCLK_FREQ_26_MHZ: 593 rate = 26000000; 594 break; 595 case HFCLK_FREQ_38p4_MHZ: 596 rate = 38400000; 597 break; 598 default: 599 pr_err("TWL4030: HFCLK is not configured\n"); 600 rate = -EINVAL; 601 break; 602 } 603 604 return rate; 605} 606EXPORT_SYMBOL_GPL(twl_get_hfclk_rate); 607 608static struct device * 609add_numbered_child(unsigned mod_no, const char *name, int num, 610 void *pdata, unsigned pdata_len, 611 bool can_wakeup, int irq0, int irq1) 612{ 613 struct platform_device *pdev; 614 struct twl_client *twl; 615 int status, sid; 616 617 if (unlikely(mod_no >= twl_get_last_module())) { 618 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 619 return ERR_PTR(-EPERM); 620 } 621 sid = twl_priv->twl_map[mod_no].sid; 622 twl = &twl_priv->twl_modules[sid]; 623 624 pdev = platform_device_alloc(name, num); 625 if (!pdev) { 626 dev_dbg(&twl->client->dev, "can't alloc dev\n"); 627 status = -ENOMEM; 628 goto err; 629 } 630 631 pdev->dev.parent = &twl->client->dev; 632 633 if (pdata) { 634 status = platform_device_add_data(pdev, pdata, pdata_len); 635 if (status < 0) { 636 dev_dbg(&pdev->dev, "can't add platform_data\n"); 637 goto err; 638 } 639 } 640 641 if (irq0) { 642 struct resource r[2] = { 643 { .start = irq0, .flags = IORESOURCE_IRQ, }, 644 { .start = irq1, .flags = IORESOURCE_IRQ, }, 645 }; 646 647 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); 648 if (status < 0) { 649 dev_dbg(&pdev->dev, "can't add irqs\n"); 650 goto err; 651 } 652 } 653 654 status = platform_device_add(pdev); 655 if (status == 0) 656 device_init_wakeup(&pdev->dev, can_wakeup); 657 658err: 659 if (status < 0) { 660 platform_device_put(pdev); 661 dev_err(&twl->client->dev, "can't add %s dev\n", name); 662 return ERR_PTR(status); 663 } 664 return &pdev->dev; 665} 666 667static inline struct device *add_child(unsigned mod_no, const char *name, 668 void *pdata, unsigned pdata_len, 669 bool can_wakeup, int irq0, int irq1) 670{ 671 return add_numbered_child(mod_no, name, -1, pdata, pdata_len, 672 can_wakeup, irq0, irq1); 673} 674 675static struct device * 676add_regulator_linked(int num, struct regulator_init_data *pdata, 677 struct regulator_consumer_supply *consumers, 678 unsigned num_consumers, unsigned long features) 679{ 680 struct twl_regulator_driver_data drv_data; 681 682 /* regulator framework demands init_data ... */ 683 if (!pdata) 684 return NULL; 685 686 if (consumers) { 687 pdata->consumer_supplies = consumers; 688 pdata->num_consumer_supplies = num_consumers; 689 } 690 691 if (pdata->driver_data) { 692 /* If we have existing drv_data, just add the flags */ 693 struct twl_regulator_driver_data *tmp; 694 tmp = pdata->driver_data; 695 tmp->features |= features; 696 } else { 697 /* add new driver data struct, used only during init */ 698 drv_data.features = features; 699 drv_data.set_voltage = NULL; 700 drv_data.get_voltage = NULL; 701 drv_data.data = NULL; 702 pdata->driver_data = &drv_data; 703 } 704 705 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ 706 return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num, 707 pdata, sizeof(*pdata), false, 0, 0); 708} 709 710static struct device * 711add_regulator(int num, struct regulator_init_data *pdata, 712 unsigned long features) 713{ 714 return add_regulator_linked(num, pdata, NULL, 0, features); 715} 716 717/* 718 * NOTE: We know the first 8 IRQs after pdata->base_irq are 719 * for the PIH, and the next are for the PWR_INT SIH, since 720 * that's how twl_init_irq() sets things up. 721 */ 722 723static int 724add_children(struct twl4030_platform_data *pdata, unsigned irq_base, 725 unsigned long features) 726{ 727 struct device *child; 728 729 if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) { 730 child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio", 731 pdata->gpio, sizeof(*pdata->gpio), 732 false, irq_base + GPIO_INTR_OFFSET, 0); 733 if (IS_ERR(child)) 734 return PTR_ERR(child); 735 } 736 737 if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) { 738 child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad", 739 pdata->keypad, sizeof(*pdata->keypad), 740 true, irq_base + KEYPAD_INTR_OFFSET, 0); 741 if (IS_ERR(child)) 742 return PTR_ERR(child); 743 } 744 745 if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc && 746 twl_class_is_4030()) { 747 child = add_child(TWL4030_MODULE_MADC, "twl4030_madc", 748 pdata->madc, sizeof(*pdata->madc), 749 true, irq_base + MADC_INTR_OFFSET, 0); 750 if (IS_ERR(child)) 751 return PTR_ERR(child); 752 } 753 754 if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) { 755 /* 756 * REVISIT platform_data here currently might expose the 757 * "msecure" line ... but for now we just expect board 758 * setup to tell the chip "it's always ok to SET_TIME". 759 * Eventually, Linux might become more aware of such 760 * HW security concerns, and "least privilege". 761 */ 762 child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0, 763 true, irq_base + RTC_INTR_OFFSET, 0); 764 if (IS_ERR(child)) 765 return PTR_ERR(child); 766 } 767 768 if (IS_ENABLED(CONFIG_PWM_TWL)) { 769 child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0, 770 false, 0, 0); 771 if (IS_ERR(child)) 772 return PTR_ERR(child); 773 } 774 775 if (IS_ENABLED(CONFIG_PWM_TWL_LED)) { 776 child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0, 777 false, 0, 0); 778 if (IS_ERR(child)) 779 return PTR_ERR(child); 780 } 781 782 if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb && 783 twl_class_is_4030()) { 784 785 static struct regulator_consumer_supply usb1v5 = { 786 .supply = "usb1v5", 787 }; 788 static struct regulator_consumer_supply usb1v8 = { 789 .supply = "usb1v8", 790 }; 791 static struct regulator_consumer_supply usb3v1 = { 792 .supply = "usb3v1", 793 }; 794 795 /* First add the regulators so that they can be used by transceiver */ 796 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { 797 /* this is a template that gets copied */ 798 struct regulator_init_data usb_fixed = { 799 .constraints.valid_modes_mask = 800 REGULATOR_MODE_NORMAL 801 | REGULATOR_MODE_STANDBY, 802 .constraints.valid_ops_mask = 803 REGULATOR_CHANGE_MODE 804 | REGULATOR_CHANGE_STATUS, 805 }; 806 807 child = add_regulator_linked(TWL4030_REG_VUSB1V5, 808 &usb_fixed, &usb1v5, 1, 809 features); 810 if (IS_ERR(child)) 811 return PTR_ERR(child); 812 813 child = add_regulator_linked(TWL4030_REG_VUSB1V8, 814 &usb_fixed, &usb1v8, 1, 815 features); 816 if (IS_ERR(child)) 817 return PTR_ERR(child); 818 819 child = add_regulator_linked(TWL4030_REG_VUSB3V1, 820 &usb_fixed, &usb3v1, 1, 821 features); 822 if (IS_ERR(child)) 823 return PTR_ERR(child); 824 825 } 826 827 child = add_child(TWL_MODULE_USB, "twl4030_usb", 828 pdata->usb, sizeof(*pdata->usb), true, 829 /* irq0 = USB_PRES, irq1 = USB */ 830 irq_base + USB_PRES_INTR_OFFSET, 831 irq_base + USB_INTR_OFFSET); 832 833 if (IS_ERR(child)) 834 return PTR_ERR(child); 835 836 /* we need to connect regulators to this transceiver */ 837 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) { 838 usb1v5.dev_name = dev_name(child); 839 usb1v8.dev_name = dev_name(child); 840 usb3v1.dev_name = dev_name(child); 841 } 842 } 843 844 if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) { 845 child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL, 846 0, false, 0, 0); 847 if (IS_ERR(child)) 848 return PTR_ERR(child); 849 } 850 851 if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) { 852 child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton", 853 NULL, 0, true, irq_base + 8 + 0, 0); 854 if (IS_ERR(child)) 855 return PTR_ERR(child); 856 } 857 858 if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio && 859 twl_class_is_4030()) { 860 child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio", 861 pdata->audio, sizeof(*pdata->audio), 862 false, 0, 0); 863 if (IS_ERR(child)) 864 return PTR_ERR(child); 865 } 866 867 /* twl4030 regulators */ 868 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) { 869 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, 870 features); 871 if (IS_ERR(child)) 872 return PTR_ERR(child); 873 874 child = add_regulator(TWL4030_REG_VIO, pdata->vio, 875 features); 876 if (IS_ERR(child)) 877 return PTR_ERR(child); 878 879 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, 880 features); 881 if (IS_ERR(child)) 882 return PTR_ERR(child); 883 884 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, 885 features); 886 if (IS_ERR(child)) 887 return PTR_ERR(child); 888 889 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, 890 features); 891 if (IS_ERR(child)) 892 return PTR_ERR(child); 893 894 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, 895 features); 896 if (IS_ERR(child)) 897 return PTR_ERR(child); 898 899 child = add_regulator((features & TWL4030_VAUX2) 900 ? TWL4030_REG_VAUX2_4030 901 : TWL4030_REG_VAUX2, 902 pdata->vaux2, features); 903 if (IS_ERR(child)) 904 return PTR_ERR(child); 905 906 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, 907 features); 908 if (IS_ERR(child)) 909 return PTR_ERR(child); 910 911 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, 912 features); 913 if (IS_ERR(child)) 914 return PTR_ERR(child); 915 916 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, 917 features); 918 if (IS_ERR(child)) 919 return PTR_ERR(child); 920 } 921 922 /* maybe add LDOs that are omitted on cost-reduced parts */ 923 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET) 924 && twl_class_is_4030()) { 925 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, 926 features); 927 if (IS_ERR(child)) 928 return PTR_ERR(child); 929 930 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, 931 features); 932 if (IS_ERR(child)) 933 return PTR_ERR(child); 934 935 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, 936 features); 937 if (IS_ERR(child)) 938 return PTR_ERR(child); 939 940 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, 941 features); 942 if (IS_ERR(child)) 943 return PTR_ERR(child); 944 945 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, 946 features); 947 if (IS_ERR(child)) 948 return PTR_ERR(child); 949 950 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, 951 features); 952 if (IS_ERR(child)) 953 return PTR_ERR(child); 954 } 955 956 if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci && 957 !(features & (TPS_SUBSET | TWL5031))) { 958 child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci", 959 pdata->bci, sizeof(*pdata->bci), false, 960 /* irq0 = CHG_PRES, irq1 = BCI */ 961 irq_base + BCI_PRES_INTR_OFFSET, 962 irq_base + BCI_INTR_OFFSET); 963 if (IS_ERR(child)) 964 return PTR_ERR(child); 965 } 966 967 if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) { 968 child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power", 969 pdata->power, sizeof(*pdata->power), false, 970 0, 0); 971 if (IS_ERR(child)) 972 return PTR_ERR(child); 973 } 974 975 return 0; 976} 977 978/*----------------------------------------------------------------------*/ 979 980/* 981 * These three functions initialize the on-chip clock framework, 982 * letting it generate the right frequencies for USB, MADC, and 983 * other purposes. 984 */ 985static inline int __init protect_pm_master(void) 986{ 987 int e = 0; 988 989 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 990 TWL4030_PM_MASTER_PROTECT_KEY); 991 return e; 992} 993 994static inline int __init unprotect_pm_master(void) 995{ 996 int e = 0; 997 998 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 999 TWL4030_PM_MASTER_PROTECT_KEY); 1000 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, 1001 TWL4030_PM_MASTER_PROTECT_KEY); 1002 1003 return e; 1004} 1005 1006static void clocks_init(struct device *dev, 1007 struct twl4030_clock_init_data *clock) 1008{ 1009 int e = 0; 1010 struct clk *osc; 1011 u32 rate; 1012 u8 ctrl = HFCLK_FREQ_26_MHZ; 1013 1014 osc = clk_get(dev, "fck"); 1015 if (IS_ERR(osc)) { 1016 printk(KERN_WARNING "Skipping twl internal clock init and " 1017 "using bootloader value (unknown osc rate)\n"); 1018 return; 1019 } 1020 1021 rate = clk_get_rate(osc); 1022 clk_put(osc); 1023 1024 switch (rate) { 1025 case 19200000: 1026 ctrl = HFCLK_FREQ_19p2_MHZ; 1027 break; 1028 case 26000000: 1029 ctrl = HFCLK_FREQ_26_MHZ; 1030 break; 1031 case 38400000: 1032 ctrl = HFCLK_FREQ_38p4_MHZ; 1033 break; 1034 } 1035 1036 ctrl |= HIGH_PERF_SQ; 1037 if (clock && clock->ck32k_lowpwr_enable) 1038 ctrl |= CK32K_LOWPWR_EN; 1039 1040 e |= unprotect_pm_master(); 1041 /* effect->MADC+USB ck en */ 1042 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); 1043 e |= protect_pm_master(); 1044 1045 if (e < 0) 1046 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); 1047} 1048 1049/*----------------------------------------------------------------------*/ 1050 1051 1052static int twl_remove(struct i2c_client *client) 1053{ 1054 unsigned i, num_slaves; 1055 int status; 1056 1057 if (twl_class_is_4030()) 1058 status = twl4030_exit_irq(); 1059 else 1060 status = twl6030_exit_irq(); 1061 1062 if (status < 0) 1063 return status; 1064 1065 num_slaves = twl_get_num_slaves(); 1066 for (i = 0; i < num_slaves; i++) { 1067 struct twl_client *twl = &twl_priv->twl_modules[i]; 1068 1069 if (twl->client && twl->client != client) 1070 i2c_unregister_device(twl->client); 1071 twl->client = NULL; 1072 } 1073 twl_priv->ready = false; 1074 return 0; 1075} 1076 1077static struct of_dev_auxdata twl_auxdata_lookup[] = { 1078 OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL), 1079 { /* sentinel */ }, 1080}; 1081 1082/* NOTE: This driver only handles a single twl4030/tps659x0 chip */ 1083static int 1084twl_probe(struct i2c_client *client, const struct i2c_device_id *id) 1085{ 1086 struct twl4030_platform_data *pdata = dev_get_platdata(&client->dev); 1087 struct device_node *node = client->dev.of_node; 1088 struct platform_device *pdev; 1089 const struct regmap_config *twl_regmap_config; 1090 int irq_base = 0; 1091 int status; 1092 unsigned i, num_slaves; 1093 1094 if (!node && !pdata) { 1095 dev_err(&client->dev, "no platform data\n"); 1096 return -EINVAL; 1097 } 1098 1099 if (twl_priv) { 1100 dev_dbg(&client->dev, "only one instance of %s allowed\n", 1101 DRIVER_NAME); 1102 return -EBUSY; 1103 } 1104 1105 pdev = platform_device_alloc(DRIVER_NAME, -1); 1106 if (!pdev) { 1107 dev_err(&client->dev, "can't alloc pdev\n"); 1108 return -ENOMEM; 1109 } 1110 1111 status = platform_device_add(pdev); 1112 if (status) { 1113 platform_device_put(pdev); 1114 return status; 1115 } 1116 1117 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { 1118 dev_dbg(&client->dev, "can't talk I2C?\n"); 1119 status = -EIO; 1120 goto free; 1121 } 1122 1123 twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private), 1124 GFP_KERNEL); 1125 if (!twl_priv) { 1126 status = -ENOMEM; 1127 goto free; 1128 } 1129 1130 if ((id->driver_data) & TWL6030_CLASS) { 1131 twl_priv->twl_id = TWL6030_CLASS_ID; 1132 twl_priv->twl_map = &twl6030_map[0]; 1133 /* The charger base address is different in twl6032 */ 1134 if ((id->driver_data) & TWL6032_SUBCLASS) 1135 twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base = 1136 TWL6032_BASEADD_CHARGER; 1137 twl_regmap_config = twl6030_regmap_config; 1138 } else { 1139 twl_priv->twl_id = TWL4030_CLASS_ID; 1140 twl_priv->twl_map = &twl4030_map[0]; 1141 twl_regmap_config = twl4030_regmap_config; 1142 } 1143 1144 num_slaves = twl_get_num_slaves(); 1145 twl_priv->twl_modules = devm_kzalloc(&client->dev, 1146 sizeof(struct twl_client) * num_slaves, 1147 GFP_KERNEL); 1148 if (!twl_priv->twl_modules) { 1149 status = -ENOMEM; 1150 goto free; 1151 } 1152 1153 for (i = 0; i < num_slaves; i++) { 1154 struct twl_client *twl = &twl_priv->twl_modules[i]; 1155 1156 if (i == 0) { 1157 twl->client = client; 1158 } else { 1159 twl->client = i2c_new_dummy(client->adapter, 1160 client->addr + i); 1161 if (!twl->client) { 1162 dev_err(&client->dev, 1163 "can't attach client %d\n", i); 1164 status = -ENOMEM; 1165 goto fail; 1166 } 1167 } 1168 1169 twl->regmap = devm_regmap_init_i2c(twl->client, 1170 &twl_regmap_config[i]); 1171 if (IS_ERR(twl->regmap)) { 1172 status = PTR_ERR(twl->regmap); 1173 dev_err(&client->dev, 1174 "Failed to allocate regmap %d, err: %d\n", i, 1175 status); 1176 goto fail; 1177 } 1178 } 1179 1180 twl_priv->ready = true; 1181 1182 /* setup clock framework */ 1183 clocks_init(&pdev->dev, pdata ? pdata->clock : NULL); 1184 1185 /* read TWL IDCODE Register */ 1186 if (twl_class_is_4030()) { 1187 status = twl_read_idcode_register(); 1188 WARN(status < 0, "Error: reading twl_idcode register value\n"); 1189 } 1190 1191 /* Maybe init the T2 Interrupt subsystem */ 1192 if (client->irq) { 1193 if (twl_class_is_4030()) { 1194 twl4030_init_chip_irq(id->name); 1195 irq_base = twl4030_init_irq(&client->dev, client->irq); 1196 } else { 1197 irq_base = twl6030_init_irq(&client->dev, client->irq); 1198 } 1199 1200 if (irq_base < 0) { 1201 status = irq_base; 1202 goto fail; 1203 } 1204 } 1205 1206 /* 1207 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. 1208 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, 1209 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. 1210 * 1211 * Also, always enable SmartReflex bit as that's needed for omaps to 1212 * to do anything over I2C4 for voltage scaling even if SmartReflex 1213 * is disabled. Without the SmartReflex bit omap sys_clkreq idle 1214 * signal will never trigger for retention idle. 1215 */ 1216 if (twl_class_is_4030()) { 1217 u8 temp; 1218 1219 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); 1220 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ 1221 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); 1222 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); 1223 1224 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &temp, 1225 TWL4030_DCDC_GLOBAL_CFG); 1226 temp |= SMARTREFLEX_ENABLE; 1227 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, temp, 1228 TWL4030_DCDC_GLOBAL_CFG); 1229 } 1230 1231 if (node) { 1232 if (pdata) 1233 twl_auxdata_lookup[0].platform_data = pdata->gpio; 1234 status = of_platform_populate(node, NULL, twl_auxdata_lookup, 1235 &client->dev); 1236 } else { 1237 status = add_children(pdata, irq_base, id->driver_data); 1238 } 1239 1240fail: 1241 if (status < 0) 1242 twl_remove(client); 1243free: 1244 if (status < 0) 1245 platform_device_unregister(pdev); 1246 1247 return status; 1248} 1249 1250static const struct i2c_device_id twl_ids[] = { 1251 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ 1252 { "twl5030", 0 }, /* T2 updated */ 1253 { "twl5031", TWL5031 }, /* TWL5030 updated */ 1254 { "tps65950", 0 }, /* catalog version of twl5030 */ 1255 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ 1256 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ 1257 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED 1258 and vibrator. Charger in USB module*/ 1259 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ 1260 { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */ 1261 { /* end of list */ }, 1262}; 1263MODULE_DEVICE_TABLE(i2c, twl_ids); 1264 1265/* One Client Driver , 4 Clients */ 1266static struct i2c_driver twl_driver = { 1267 .driver.name = DRIVER_NAME, 1268 .id_table = twl_ids, 1269 .probe = twl_probe, 1270 .remove = twl_remove, 1271}; 1272 1273module_i2c_driver(twl_driver); 1274 1275MODULE_AUTHOR("Texas Instruments, Inc."); 1276MODULE_DESCRIPTION("I2C Core interface for TWL"); 1277MODULE_LICENSE("GPL"); 1278