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/platform_device.h> 34 #include <linux/regmap.h> 35 #include <linux/clk.h> 36 #include <linux/err.h> 37 #include <linux/device.h> 38 #include <linux/of.h> 39 #include <linux/of_irq.h> 40 #include <linux/of_platform.h> 41 #include <linux/irq.h> 42 #include <linux/irqdomain.h> 43 44 #include <linux/regulator/machine.h> 45 46 #include <linux/i2c.h> 47 #include <linux/mfd/twl.h> 48 49 /* Register descriptions for audio */ 50 #include <linux/mfd/twl4030-audio.h> 51 52 #include "twl-core.h" 53 54 /* 55 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power 56 * Management and System Companion Device" chips originally designed for 57 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, 58 * often at around 3 Mbit/sec, including for interrupt handling. 59 * 60 * This driver core provides genirq support for the interrupts emitted, 61 * by the various modules, and exports register access primitives. 62 * 63 * FIXME this driver currently requires use of the first interrupt line 64 * (and associated registers). 65 */ 66 67 #define DRIVER_NAME "twl" 68 69 /* Triton Core internal information (BEGIN) */ 70 71 /* Base Address defns for twl4030_map[] */ 72 73 /* subchip/slave 0 - USB ID */ 74 #define TWL4030_BASEADD_USB 0x0000 75 76 /* subchip/slave 1 - AUD ID */ 77 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 78 #define TWL4030_BASEADD_GPIO 0x0098 79 #define TWL4030_BASEADD_INTBR 0x0085 80 #define TWL4030_BASEADD_PIH 0x0080 81 #define TWL4030_BASEADD_TEST 0x004C 82 83 /* subchip/slave 2 - AUX ID */ 84 #define TWL4030_BASEADD_INTERRUPTS 0x00B9 85 #define TWL4030_BASEADD_LED 0x00EE 86 #define TWL4030_BASEADD_MADC 0x0000 87 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 88 #define TWL4030_BASEADD_PRECHARGE 0x00AA 89 #define TWL4030_BASEADD_PWM 0x00F8 90 #define TWL4030_BASEADD_KEYPAD 0x00D2 91 92 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ 93 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's 94 one */ 95 96 /* subchip/slave 3 - POWER ID */ 97 #define TWL4030_BASEADD_BACKUP 0x0014 98 #define TWL4030_BASEADD_INT 0x002E 99 #define TWL4030_BASEADD_PM_MASTER 0x0036 100 101 #define TWL4030_BASEADD_PM_RECEIVER 0x005B 102 #define TWL4030_DCDC_GLOBAL_CFG 0x06 103 #define SMARTREFLEX_ENABLE BIT(3) 104 105 #define TWL4030_BASEADD_RTC 0x001C 106 #define TWL4030_BASEADD_SECURED_REG 0x0000 107 108 /* Triton Core internal information (END) */ 109 110 111 /* subchip/slave 0 0x48 - POWER */ 112 #define TWL6030_BASEADD_RTC 0x0000 113 #define TWL6030_BASEADD_SECURED_REG 0x0017 114 #define TWL6030_BASEADD_PM_MASTER 0x001F 115 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ 116 #define TWL6030_BASEADD_PM_MISC 0x00E2 117 #define TWL6030_BASEADD_PM_PUPD 0x00F0 118 119 /* subchip/slave 1 0x49 - FEATURE */ 120 #define TWL6030_BASEADD_USB 0x0000 121 #define TWL6030_BASEADD_GPADC_CTRL 0x002E 122 #define TWL6030_BASEADD_AUX 0x0090 123 #define TWL6030_BASEADD_PWM 0x00BA 124 #define TWL6030_BASEADD_GASGAUGE 0x00C0 125 #define TWL6030_BASEADD_PIH 0x00D0 126 #define TWL6030_BASEADD_CHARGER 0x00E0 127 #define TWL6032_BASEADD_CHARGER 0x00DA 128 #define TWL6030_BASEADD_LED 0x00F4 129 130 /* subchip/slave 2 0x4A - DFT */ 131 #define TWL6030_BASEADD_DIEID 0x00C0 132 133 /* subchip/slave 3 0x4B - AUDIO */ 134 #define TWL6030_BASEADD_AUDIO 0x0000 135 #define TWL6030_BASEADD_RSV 0x0000 136 #define TWL6030_BASEADD_ZERO 0x0000 137 138 /* Few power values */ 139 #define R_CFG_BOOT 0x05 140 141 /* some fields in R_CFG_BOOT */ 142 #define HFCLK_FREQ_19p2_MHZ (1 << 0) 143 #define HFCLK_FREQ_26_MHZ (2 << 0) 144 #define HFCLK_FREQ_38p4_MHZ (3 << 0) 145 #define HIGH_PERF_SQ (1 << 3) 146 #define CK32K_LOWPWR_EN (1 << 7) 147 148 /*----------------------------------------------------------------------*/ 149 150 /* Structure for each TWL4030/TWL6030 Slave */ 151 struct twl_client { 152 struct i2c_client *client; 153 struct regmap *regmap; 154 }; 155 156 /* mapping the module id to slave id and base address */ 157 struct twl_mapping { 158 unsigned char sid; /* Slave ID */ 159 unsigned char base; /* base address */ 160 }; 161 162 struct twl_private { 163 bool ready; /* The core driver is ready to be used */ 164 u32 twl_idcode; /* TWL IDCODE Register value */ 165 unsigned int twl_id; 166 167 struct twl_mapping *twl_map; 168 struct twl_client *twl_modules; 169 }; 170 171 static struct twl_private *twl_priv; 172 173 static struct twl_mapping twl4030_map[] = { 174 /* 175 * NOTE: don't change this table without updating the 176 * <linux/mfd/twl.h> defines for TWL4030_MODULE_* 177 * so they continue to match the order in this table. 178 */ 179 180 /* Common IPs */ 181 { 0, TWL4030_BASEADD_USB }, 182 { 1, TWL4030_BASEADD_PIH }, 183 { 2, TWL4030_BASEADD_MAIN_CHARGE }, 184 { 3, TWL4030_BASEADD_PM_MASTER }, 185 { 3, TWL4030_BASEADD_PM_RECEIVER }, 186 187 { 3, TWL4030_BASEADD_RTC }, 188 { 2, TWL4030_BASEADD_PWM }, 189 { 2, TWL4030_BASEADD_LED }, 190 { 3, TWL4030_BASEADD_SECURED_REG }, 191 192 /* TWL4030 specific IPs */ 193 { 1, TWL4030_BASEADD_AUDIO_VOICE }, 194 { 1, TWL4030_BASEADD_GPIO }, 195 { 1, TWL4030_BASEADD_INTBR }, 196 { 1, TWL4030_BASEADD_TEST }, 197 { 2, TWL4030_BASEADD_KEYPAD }, 198 199 { 2, TWL4030_BASEADD_MADC }, 200 { 2, TWL4030_BASEADD_INTERRUPTS }, 201 { 2, TWL4030_BASEADD_PRECHARGE }, 202 { 3, TWL4030_BASEADD_BACKUP }, 203 { 3, TWL4030_BASEADD_INT }, 204 205 { 2, TWL5031_BASEADD_ACCESSORY }, 206 { 2, TWL5031_BASEADD_INTERRUPTS }, 207 }; 208 209 static const struct reg_default twl4030_49_defaults[] = { 210 /* Audio Registers */ 211 { 0x01, 0x00}, /* CODEC_MODE */ 212 { 0x02, 0x00}, /* OPTION */ 213 /* 0x03 Unused */ 214 { 0x04, 0x00}, /* MICBIAS_CTL */ 215 { 0x05, 0x00}, /* ANAMICL */ 216 { 0x06, 0x00}, /* ANAMICR */ 217 { 0x07, 0x00}, /* AVADC_CTL */ 218 { 0x08, 0x00}, /* ADCMICSEL */ 219 { 0x09, 0x00}, /* DIGMIXING */ 220 { 0x0a, 0x0f}, /* ATXL1PGA */ 221 { 0x0b, 0x0f}, /* ATXR1PGA */ 222 { 0x0c, 0x0f}, /* AVTXL2PGA */ 223 { 0x0d, 0x0f}, /* AVTXR2PGA */ 224 { 0x0e, 0x00}, /* AUDIO_IF */ 225 { 0x0f, 0x00}, /* VOICE_IF */ 226 { 0x10, 0x3f}, /* ARXR1PGA */ 227 { 0x11, 0x3f}, /* ARXL1PGA */ 228 { 0x12, 0x3f}, /* ARXR2PGA */ 229 { 0x13, 0x3f}, /* ARXL2PGA */ 230 { 0x14, 0x25}, /* VRXPGA */ 231 { 0x15, 0x00}, /* VSTPGA */ 232 { 0x16, 0x00}, /* VRX2ARXPGA */ 233 { 0x17, 0x00}, /* AVDAC_CTL */ 234 { 0x18, 0x00}, /* ARX2VTXPGA */ 235 { 0x19, 0x32}, /* ARXL1_APGA_CTL*/ 236 { 0x1a, 0x32}, /* ARXR1_APGA_CTL*/ 237 { 0x1b, 0x32}, /* ARXL2_APGA_CTL*/ 238 { 0x1c, 0x32}, /* ARXR2_APGA_CTL*/ 239 { 0x1d, 0x00}, /* ATX2ARXPGA */ 240 { 0x1e, 0x00}, /* BT_IF */ 241 { 0x1f, 0x55}, /* BTPGA */ 242 { 0x20, 0x00}, /* BTSTPGA */ 243 { 0x21, 0x00}, /* EAR_CTL */ 244 { 0x22, 0x00}, /* HS_SEL */ 245 { 0x23, 0x00}, /* HS_GAIN_SET */ 246 { 0x24, 0x00}, /* HS_POPN_SET */ 247 { 0x25, 0x00}, /* PREDL_CTL */ 248 { 0x26, 0x00}, /* PREDR_CTL */ 249 { 0x27, 0x00}, /* PRECKL_CTL */ 250 { 0x28, 0x00}, /* PRECKR_CTL */ 251 { 0x29, 0x00}, /* HFL_CTL */ 252 { 0x2a, 0x00}, /* HFR_CTL */ 253 { 0x2b, 0x05}, /* ALC_CTL */ 254 { 0x2c, 0x00}, /* ALC_SET1 */ 255 { 0x2d, 0x00}, /* ALC_SET2 */ 256 { 0x2e, 0x00}, /* BOOST_CTL */ 257 { 0x2f, 0x00}, /* SOFTVOL_CTL */ 258 { 0x30, 0x13}, /* DTMF_FREQSEL */ 259 { 0x31, 0x00}, /* DTMF_TONEXT1H */ 260 { 0x32, 0x00}, /* DTMF_TONEXT1L */ 261 { 0x33, 0x00}, /* DTMF_TONEXT2H */ 262 { 0x34, 0x00}, /* DTMF_TONEXT2L */ 263 { 0x35, 0x79}, /* DTMF_TONOFF */ 264 { 0x36, 0x11}, /* DTMF_WANONOFF */ 265 { 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */ 266 { 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */ 267 { 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */ 268 { 0x3a, 0x06}, /* APLL_CTL */ 269 { 0x3b, 0x00}, /* DTMF_CTL */ 270 { 0x3c, 0x44}, /* DTMF_PGA_CTL2 (0x3C) */ 271 { 0x3d, 0x69}, /* DTMF_PGA_CTL1 (0x3D) */ 272 { 0x3e, 0x00}, /* MISC_SET_1 */ 273 { 0x3f, 0x00}, /* PCMBTMUX */ 274 /* 0x40 - 0x42 Unused */ 275 { 0x43, 0x00}, /* RX_PATH_SEL */ 276 { 0x44, 0x32}, /* VDL_APGA_CTL */ 277 { 0x45, 0x00}, /* VIBRA_CTL */ 278 { 0x46, 0x00}, /* VIBRA_SET */ 279 { 0x47, 0x00}, /* VIBRA_PWM_SET */ 280 { 0x48, 0x00}, /* ANAMIC_GAIN */ 281 { 0x49, 0x00}, /* MISC_SET_2 */ 282 /* End of Audio Registers */ 283 }; 284 285 static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg) 286 { 287 switch (reg) { 288 case 0x00: 289 case 0x03: 290 case 0x40: 291 case 0x41: 292 case 0x42: 293 return false; 294 default: 295 return true; 296 } 297 } 298 299 static const struct regmap_range twl4030_49_volatile_ranges[] = { 300 regmap_reg_range(TWL4030_BASEADD_TEST, 0xff), 301 }; 302 303 static const struct regmap_access_table twl4030_49_volatile_table = { 304 .yes_ranges = twl4030_49_volatile_ranges, 305 .n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges), 306 }; 307 308 static const struct regmap_config twl4030_regmap_config[4] = { 309 { 310 /* Address 0x48 */ 311 .reg_bits = 8, 312 .val_bits = 8, 313 .max_register = 0xff, 314 }, 315 { 316 /* Address 0x49 */ 317 .reg_bits = 8, 318 .val_bits = 8, 319 .max_register = 0xff, 320 321 .readable_reg = twl4030_49_nop_reg, 322 .writeable_reg = twl4030_49_nop_reg, 323 324 .volatile_table = &twl4030_49_volatile_table, 325 326 .reg_defaults = twl4030_49_defaults, 327 .num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults), 328 .cache_type = REGCACHE_RBTREE, 329 }, 330 { 331 /* Address 0x4a */ 332 .reg_bits = 8, 333 .val_bits = 8, 334 .max_register = 0xff, 335 }, 336 { 337 /* Address 0x4b */ 338 .reg_bits = 8, 339 .val_bits = 8, 340 .max_register = 0xff, 341 }, 342 }; 343 344 static struct twl_mapping twl6030_map[] = { 345 /* 346 * NOTE: don't change this table without updating the 347 * <linux/mfd/twl.h> defines for TWL4030_MODULE_* 348 * so they continue to match the order in this table. 349 */ 350 351 /* Common IPs */ 352 { 1, TWL6030_BASEADD_USB }, 353 { 1, TWL6030_BASEADD_PIH }, 354 { 1, TWL6030_BASEADD_CHARGER }, 355 { 0, TWL6030_BASEADD_PM_MASTER }, 356 { 0, TWL6030_BASEADD_PM_SLAVE_MISC }, 357 358 { 0, TWL6030_BASEADD_RTC }, 359 { 1, TWL6030_BASEADD_PWM }, 360 { 1, TWL6030_BASEADD_LED }, 361 { 0, TWL6030_BASEADD_SECURED_REG }, 362 363 /* TWL6030 specific IPs */ 364 { 0, TWL6030_BASEADD_ZERO }, 365 { 1, TWL6030_BASEADD_ZERO }, 366 { 2, TWL6030_BASEADD_ZERO }, 367 { 1, TWL6030_BASEADD_GPADC_CTRL }, 368 { 1, TWL6030_BASEADD_GASGAUGE }, 369 }; 370 371 static const struct regmap_config twl6030_regmap_config[3] = { 372 { 373 /* Address 0x48 */ 374 .reg_bits = 8, 375 .val_bits = 8, 376 .max_register = 0xff, 377 }, 378 { 379 /* Address 0x49 */ 380 .reg_bits = 8, 381 .val_bits = 8, 382 .max_register = 0xff, 383 }, 384 { 385 /* Address 0x4a */ 386 .reg_bits = 8, 387 .val_bits = 8, 388 .max_register = 0xff, 389 }, 390 }; 391 392 /*----------------------------------------------------------------------*/ 393 394 static inline int twl_get_num_slaves(void) 395 { 396 if (twl_class_is_4030()) 397 return 4; /* TWL4030 class have four slave address */ 398 else 399 return 3; /* TWL6030 class have three slave address */ 400 } 401 402 static inline int twl_get_last_module(void) 403 { 404 if (twl_class_is_4030()) 405 return TWL4030_MODULE_LAST; 406 else 407 return TWL6030_MODULE_LAST; 408 } 409 410 /* Exported Functions */ 411 412 unsigned int twl_rev(void) 413 { 414 return twl_priv ? twl_priv->twl_id : 0; 415 } 416 EXPORT_SYMBOL(twl_rev); 417 418 /** 419 * twl_get_regmap - Get the regmap associated with the given module 420 * @mod_no: module number 421 * 422 * Returns the regmap pointer or NULL in case of failure. 423 */ 424 static struct regmap *twl_get_regmap(u8 mod_no) 425 { 426 int sid; 427 struct twl_client *twl; 428 429 if (unlikely(!twl_priv || !twl_priv->ready)) { 430 pr_err("%s: not initialized\n", DRIVER_NAME); 431 return NULL; 432 } 433 if (unlikely(mod_no >= twl_get_last_module())) { 434 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 435 return NULL; 436 } 437 438 sid = twl_priv->twl_map[mod_no].sid; 439 twl = &twl_priv->twl_modules[sid]; 440 441 return twl->regmap; 442 } 443 444 /** 445 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 446 * @mod_no: module number 447 * @value: an array of num_bytes+1 containing data to write 448 * @reg: register address (just offset will do) 449 * @num_bytes: number of bytes to transfer 450 * 451 * Returns 0 on success or else a negative error code. 452 */ 453 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 454 { 455 struct regmap *regmap = twl_get_regmap(mod_no); 456 int ret; 457 458 if (!regmap) 459 return -EPERM; 460 461 ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg, 462 value, num_bytes); 463 464 if (ret) 465 pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n", 466 DRIVER_NAME, mod_no, reg, num_bytes); 467 468 return ret; 469 } 470 EXPORT_SYMBOL(twl_i2c_write); 471 472 /** 473 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 474 * @mod_no: module number 475 * @value: an array of num_bytes containing data to be read 476 * @reg: register address (just offset will do) 477 * @num_bytes: number of bytes to transfer 478 * 479 * Returns 0 on success or else a negative error code. 480 */ 481 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 482 { 483 struct regmap *regmap = twl_get_regmap(mod_no); 484 int ret; 485 486 if (!regmap) 487 return -EPERM; 488 489 ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg, 490 value, num_bytes); 491 492 if (ret) 493 pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n", 494 DRIVER_NAME, mod_no, reg, num_bytes); 495 496 return ret; 497 } 498 EXPORT_SYMBOL(twl_i2c_read); 499 500 /** 501 * twl_regcache_bypass - Configure the regcache bypass for the regmap associated 502 * with the module 503 * @mod_no: module number 504 * @enable: Regcache bypass state 505 * 506 * Returns 0 else failure. 507 */ 508 int twl_set_regcache_bypass(u8 mod_no, bool enable) 509 { 510 struct regmap *regmap = twl_get_regmap(mod_no); 511 512 if (!regmap) 513 return -EPERM; 514 515 regcache_cache_bypass(regmap, enable); 516 517 return 0; 518 } 519 EXPORT_SYMBOL(twl_set_regcache_bypass); 520 521 /*----------------------------------------------------------------------*/ 522 523 /** 524 * twl_read_idcode_register - API to read the IDCODE register. 525 * 526 * Unlocks the IDCODE register and read the 32 bit value. 527 */ 528 static int twl_read_idcode_register(void) 529 { 530 int err; 531 532 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, 533 REG_UNLOCK_TEST_REG); 534 if (err) { 535 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); 536 goto fail; 537 } 538 539 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode), 540 REG_IDCODE_7_0, 4); 541 if (err) { 542 pr_err("TWL4030: unable to read IDCODE -%d\n", err); 543 goto fail; 544 } 545 546 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); 547 if (err) 548 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); 549 fail: 550 return err; 551 } 552 553 /** 554 * twl_get_type - API to get TWL Si type. 555 * 556 * Api to get the TWL Si type from IDCODE value. 557 */ 558 int twl_get_type(void) 559 { 560 return TWL_SIL_TYPE(twl_priv->twl_idcode); 561 } 562 EXPORT_SYMBOL_GPL(twl_get_type); 563 564 /** 565 * twl_get_version - API to get TWL Si version. 566 * 567 * Api to get the TWL Si version from IDCODE value. 568 */ 569 int twl_get_version(void) 570 { 571 return TWL_SIL_REV(twl_priv->twl_idcode); 572 } 573 EXPORT_SYMBOL_GPL(twl_get_version); 574 575 /** 576 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate. 577 * 578 * Api to get the TWL HFCLK rate based on BOOT_CFG register. 579 */ 580 int twl_get_hfclk_rate(void) 581 { 582 u8 ctrl; 583 int rate; 584 585 twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT); 586 587 switch (ctrl & 0x3) { 588 case HFCLK_FREQ_19p2_MHZ: 589 rate = 19200000; 590 break; 591 case HFCLK_FREQ_26_MHZ: 592 rate = 26000000; 593 break; 594 case HFCLK_FREQ_38p4_MHZ: 595 rate = 38400000; 596 break; 597 default: 598 pr_err("TWL4030: HFCLK is not configured\n"); 599 rate = -EINVAL; 600 break; 601 } 602 603 return rate; 604 } 605 EXPORT_SYMBOL_GPL(twl_get_hfclk_rate); 606 607 static struct device * 608 add_numbered_child(unsigned mod_no, const char *name, int num, 609 void *pdata, unsigned pdata_len, 610 bool can_wakeup, int irq0, int irq1) 611 { 612 struct platform_device *pdev; 613 struct twl_client *twl; 614 int status, sid; 615 616 if (unlikely(mod_no >= twl_get_last_module())) { 617 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 618 return ERR_PTR(-EPERM); 619 } 620 sid = twl_priv->twl_map[mod_no].sid; 621 twl = &twl_priv->twl_modules[sid]; 622 623 pdev = platform_device_alloc(name, num); 624 if (!pdev) 625 return ERR_PTR(-ENOMEM); 626 627 pdev->dev.parent = &twl->client->dev; 628 629 if (pdata) { 630 status = platform_device_add_data(pdev, pdata, pdata_len); 631 if (status < 0) { 632 dev_dbg(&pdev->dev, "can't add platform_data\n"); 633 goto put_device; 634 } 635 } 636 637 if (irq0) { 638 struct resource r[2] = { 639 { .start = irq0, .flags = IORESOURCE_IRQ, }, 640 { .start = irq1, .flags = IORESOURCE_IRQ, }, 641 }; 642 643 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); 644 if (status < 0) { 645 dev_dbg(&pdev->dev, "can't add irqs\n"); 646 goto put_device; 647 } 648 } 649 650 status = platform_device_add(pdev); 651 if (status) 652 goto put_device; 653 654 device_init_wakeup(&pdev->dev, can_wakeup); 655 656 return &pdev->dev; 657 658 put_device: 659 platform_device_put(pdev); 660 dev_err(&twl->client->dev, "failed to add device %s\n", name); 661 return ERR_PTR(status); 662 } 663 664 static inline struct device *add_child(unsigned mod_no, const char *name, 665 void *pdata, unsigned pdata_len, 666 bool can_wakeup, int irq0, int irq1) 667 { 668 return add_numbered_child(mod_no, name, -1, pdata, pdata_len, 669 can_wakeup, irq0, irq1); 670 } 671 672 static struct device * 673 add_regulator_linked(int num, struct regulator_init_data *pdata, 674 struct regulator_consumer_supply *consumers, 675 unsigned num_consumers, unsigned long features) 676 { 677 struct twl_regulator_driver_data drv_data; 678 679 /* regulator framework demands init_data ... */ 680 if (!pdata) 681 return NULL; 682 683 if (consumers) { 684 pdata->consumer_supplies = consumers; 685 pdata->num_consumer_supplies = num_consumers; 686 } 687 688 if (pdata->driver_data) { 689 /* If we have existing drv_data, just add the flags */ 690 struct twl_regulator_driver_data *tmp; 691 tmp = pdata->driver_data; 692 tmp->features |= features; 693 } else { 694 /* add new driver data struct, used only during init */ 695 drv_data.features = features; 696 drv_data.set_voltage = NULL; 697 drv_data.get_voltage = NULL; 698 drv_data.data = NULL; 699 pdata->driver_data = &drv_data; 700 } 701 702 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ 703 return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num, 704 pdata, sizeof(*pdata), false, 0, 0); 705 } 706 707 static struct device * 708 add_regulator(int num, struct regulator_init_data *pdata, 709 unsigned long features) 710 { 711 return add_regulator_linked(num, pdata, NULL, 0, features); 712 } 713 714 /* 715 * NOTE: We know the first 8 IRQs after pdata->base_irq are 716 * for the PIH, and the next are for the PWR_INT SIH, since 717 * that's how twl_init_irq() sets things up. 718 */ 719 720 static int 721 add_children(struct twl4030_platform_data *pdata, unsigned irq_base, 722 unsigned long features) 723 { 724 struct device *child; 725 726 if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) { 727 child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio", 728 pdata->gpio, sizeof(*pdata->gpio), 729 false, irq_base + GPIO_INTR_OFFSET, 0); 730 if (IS_ERR(child)) 731 return PTR_ERR(child); 732 } 733 734 if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) { 735 child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad", 736 pdata->keypad, sizeof(*pdata->keypad), 737 true, irq_base + KEYPAD_INTR_OFFSET, 0); 738 if (IS_ERR(child)) 739 return PTR_ERR(child); 740 } 741 742 if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc && 743 twl_class_is_4030()) { 744 child = add_child(TWL4030_MODULE_MADC, "twl4030_madc", 745 pdata->madc, sizeof(*pdata->madc), 746 true, irq_base + MADC_INTR_OFFSET, 0); 747 if (IS_ERR(child)) 748 return PTR_ERR(child); 749 } 750 751 if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) { 752 /* 753 * REVISIT platform_data here currently might expose the 754 * "msecure" line ... but for now we just expect board 755 * setup to tell the chip "it's always ok to SET_TIME". 756 * Eventually, Linux might become more aware of such 757 * HW security concerns, and "least privilege". 758 */ 759 child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0, 760 true, irq_base + RTC_INTR_OFFSET, 0); 761 if (IS_ERR(child)) 762 return PTR_ERR(child); 763 } 764 765 if (IS_ENABLED(CONFIG_PWM_TWL)) { 766 child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0, 767 false, 0, 0); 768 if (IS_ERR(child)) 769 return PTR_ERR(child); 770 } 771 772 if (IS_ENABLED(CONFIG_PWM_TWL_LED)) { 773 child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0, 774 false, 0, 0); 775 if (IS_ERR(child)) 776 return PTR_ERR(child); 777 } 778 779 if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb && 780 twl_class_is_4030()) { 781 782 static struct regulator_consumer_supply usb1v5 = { 783 .supply = "usb1v5", 784 }; 785 static struct regulator_consumer_supply usb1v8 = { 786 .supply = "usb1v8", 787 }; 788 static struct regulator_consumer_supply usb3v1 = { 789 .supply = "usb3v1", 790 }; 791 792 /* First add the regulators so that they can be used by transceiver */ 793 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { 794 /* this is a template that gets copied */ 795 struct regulator_init_data usb_fixed = { 796 .constraints.valid_modes_mask = 797 REGULATOR_MODE_NORMAL 798 | REGULATOR_MODE_STANDBY, 799 .constraints.valid_ops_mask = 800 REGULATOR_CHANGE_MODE 801 | REGULATOR_CHANGE_STATUS, 802 }; 803 804 child = add_regulator_linked(TWL4030_REG_VUSB1V5, 805 &usb_fixed, &usb1v5, 1, 806 features); 807 if (IS_ERR(child)) 808 return PTR_ERR(child); 809 810 child = add_regulator_linked(TWL4030_REG_VUSB1V8, 811 &usb_fixed, &usb1v8, 1, 812 features); 813 if (IS_ERR(child)) 814 return PTR_ERR(child); 815 816 child = add_regulator_linked(TWL4030_REG_VUSB3V1, 817 &usb_fixed, &usb3v1, 1, 818 features); 819 if (IS_ERR(child)) 820 return PTR_ERR(child); 821 822 } 823 824 child = add_child(TWL_MODULE_USB, "twl4030_usb", 825 pdata->usb, sizeof(*pdata->usb), true, 826 /* irq0 = USB_PRES, irq1 = USB */ 827 irq_base + USB_PRES_INTR_OFFSET, 828 irq_base + USB_INTR_OFFSET); 829 830 if (IS_ERR(child)) 831 return PTR_ERR(child); 832 833 /* we need to connect regulators to this transceiver */ 834 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) { 835 usb1v5.dev_name = dev_name(child); 836 usb1v8.dev_name = dev_name(child); 837 usb3v1.dev_name = dev_name(child); 838 } 839 } 840 841 if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) { 842 child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL, 843 0, false, 0, 0); 844 if (IS_ERR(child)) 845 return PTR_ERR(child); 846 } 847 848 if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) { 849 child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton", 850 NULL, 0, true, irq_base + 8 + 0, 0); 851 if (IS_ERR(child)) 852 return PTR_ERR(child); 853 } 854 855 if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio && 856 twl_class_is_4030()) { 857 child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio", 858 pdata->audio, sizeof(*pdata->audio), 859 false, 0, 0); 860 if (IS_ERR(child)) 861 return PTR_ERR(child); 862 } 863 864 /* twl4030 regulators */ 865 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) { 866 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, 867 features); 868 if (IS_ERR(child)) 869 return PTR_ERR(child); 870 871 child = add_regulator(TWL4030_REG_VIO, pdata->vio, 872 features); 873 if (IS_ERR(child)) 874 return PTR_ERR(child); 875 876 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, 877 features); 878 if (IS_ERR(child)) 879 return PTR_ERR(child); 880 881 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, 882 features); 883 if (IS_ERR(child)) 884 return PTR_ERR(child); 885 886 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, 887 features); 888 if (IS_ERR(child)) 889 return PTR_ERR(child); 890 891 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, 892 features); 893 if (IS_ERR(child)) 894 return PTR_ERR(child); 895 896 child = add_regulator((features & TWL4030_VAUX2) 897 ? TWL4030_REG_VAUX2_4030 898 : TWL4030_REG_VAUX2, 899 pdata->vaux2, features); 900 if (IS_ERR(child)) 901 return PTR_ERR(child); 902 903 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, 904 features); 905 if (IS_ERR(child)) 906 return PTR_ERR(child); 907 908 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, 909 features); 910 if (IS_ERR(child)) 911 return PTR_ERR(child); 912 913 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, 914 features); 915 if (IS_ERR(child)) 916 return PTR_ERR(child); 917 } 918 919 /* maybe add LDOs that are omitted on cost-reduced parts */ 920 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET) 921 && twl_class_is_4030()) { 922 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, 923 features); 924 if (IS_ERR(child)) 925 return PTR_ERR(child); 926 927 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, 928 features); 929 if (IS_ERR(child)) 930 return PTR_ERR(child); 931 932 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, 933 features); 934 if (IS_ERR(child)) 935 return PTR_ERR(child); 936 937 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, 938 features); 939 if (IS_ERR(child)) 940 return PTR_ERR(child); 941 942 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, 943 features); 944 if (IS_ERR(child)) 945 return PTR_ERR(child); 946 947 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, 948 features); 949 if (IS_ERR(child)) 950 return PTR_ERR(child); 951 } 952 953 if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci && 954 !(features & (TPS_SUBSET | TWL5031))) { 955 child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci", 956 pdata->bci, sizeof(*pdata->bci), false, 957 /* irq0 = CHG_PRES, irq1 = BCI */ 958 irq_base + BCI_PRES_INTR_OFFSET, 959 irq_base + BCI_INTR_OFFSET); 960 if (IS_ERR(child)) 961 return PTR_ERR(child); 962 } 963 964 if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) { 965 child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power", 966 pdata->power, sizeof(*pdata->power), false, 967 0, 0); 968 if (IS_ERR(child)) 969 return PTR_ERR(child); 970 } 971 972 return 0; 973 } 974 975 /*----------------------------------------------------------------------*/ 976 977 /* 978 * These three functions initialize the on-chip clock framework, 979 * letting it generate the right frequencies for USB, MADC, and 980 * other purposes. 981 */ 982 static inline int __init protect_pm_master(void) 983 { 984 int e = 0; 985 986 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 987 TWL4030_PM_MASTER_PROTECT_KEY); 988 return e; 989 } 990 991 static inline int __init unprotect_pm_master(void) 992 { 993 int e = 0; 994 995 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 996 TWL4030_PM_MASTER_PROTECT_KEY); 997 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, 998 TWL4030_PM_MASTER_PROTECT_KEY); 999 1000 return e; 1001 } 1002 1003 static void clocks_init(struct device *dev, 1004 struct twl4030_clock_init_data *clock) 1005 { 1006 int e = 0; 1007 struct clk *osc; 1008 u32 rate; 1009 u8 ctrl = HFCLK_FREQ_26_MHZ; 1010 1011 osc = clk_get(dev, "fck"); 1012 if (IS_ERR(osc)) { 1013 printk(KERN_WARNING "Skipping twl internal clock init and " 1014 "using bootloader value (unknown osc rate)\n"); 1015 return; 1016 } 1017 1018 rate = clk_get_rate(osc); 1019 clk_put(osc); 1020 1021 switch (rate) { 1022 case 19200000: 1023 ctrl = HFCLK_FREQ_19p2_MHZ; 1024 break; 1025 case 26000000: 1026 ctrl = HFCLK_FREQ_26_MHZ; 1027 break; 1028 case 38400000: 1029 ctrl = HFCLK_FREQ_38p4_MHZ; 1030 break; 1031 } 1032 1033 ctrl |= HIGH_PERF_SQ; 1034 if (clock && clock->ck32k_lowpwr_enable) 1035 ctrl |= CK32K_LOWPWR_EN; 1036 1037 e |= unprotect_pm_master(); 1038 /* effect->MADC+USB ck en */ 1039 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); 1040 e |= protect_pm_master(); 1041 1042 if (e < 0) 1043 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); 1044 } 1045 1046 /*----------------------------------------------------------------------*/ 1047 1048 1049 static int twl_remove(struct i2c_client *client) 1050 { 1051 unsigned i, num_slaves; 1052 int status; 1053 1054 if (twl_class_is_4030()) 1055 status = twl4030_exit_irq(); 1056 else 1057 status = twl6030_exit_irq(); 1058 1059 if (status < 0) 1060 return status; 1061 1062 num_slaves = twl_get_num_slaves(); 1063 for (i = 0; i < num_slaves; i++) { 1064 struct twl_client *twl = &twl_priv->twl_modules[i]; 1065 1066 if (twl->client && twl->client != client) 1067 i2c_unregister_device(twl->client); 1068 twl->client = NULL; 1069 } 1070 twl_priv->ready = false; 1071 return 0; 1072 } 1073 1074 static struct of_dev_auxdata twl_auxdata_lookup[] = { 1075 OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL), 1076 { /* sentinel */ }, 1077 }; 1078 1079 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */ 1080 static int 1081 twl_probe(struct i2c_client *client, const struct i2c_device_id *id) 1082 { 1083 struct twl4030_platform_data *pdata = dev_get_platdata(&client->dev); 1084 struct device_node *node = client->dev.of_node; 1085 struct platform_device *pdev; 1086 const struct regmap_config *twl_regmap_config; 1087 int irq_base = 0; 1088 int status; 1089 unsigned i, num_slaves; 1090 1091 if (!node && !pdata) { 1092 dev_err(&client->dev, "no platform data\n"); 1093 return -EINVAL; 1094 } 1095 1096 if (twl_priv) { 1097 dev_dbg(&client->dev, "only one instance of %s allowed\n", 1098 DRIVER_NAME); 1099 return -EBUSY; 1100 } 1101 1102 pdev = platform_device_alloc(DRIVER_NAME, -1); 1103 if (!pdev) { 1104 dev_err(&client->dev, "can't alloc pdev\n"); 1105 return -ENOMEM; 1106 } 1107 1108 status = platform_device_add(pdev); 1109 if (status) { 1110 platform_device_put(pdev); 1111 return status; 1112 } 1113 1114 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { 1115 dev_dbg(&client->dev, "can't talk I2C?\n"); 1116 status = -EIO; 1117 goto free; 1118 } 1119 1120 twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private), 1121 GFP_KERNEL); 1122 if (!twl_priv) { 1123 status = -ENOMEM; 1124 goto free; 1125 } 1126 1127 if ((id->driver_data) & TWL6030_CLASS) { 1128 twl_priv->twl_id = TWL6030_CLASS_ID; 1129 twl_priv->twl_map = &twl6030_map[0]; 1130 /* The charger base address is different in twl6032 */ 1131 if ((id->driver_data) & TWL6032_SUBCLASS) 1132 twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base = 1133 TWL6032_BASEADD_CHARGER; 1134 twl_regmap_config = twl6030_regmap_config; 1135 } else { 1136 twl_priv->twl_id = TWL4030_CLASS_ID; 1137 twl_priv->twl_map = &twl4030_map[0]; 1138 twl_regmap_config = twl4030_regmap_config; 1139 } 1140 1141 num_slaves = twl_get_num_slaves(); 1142 twl_priv->twl_modules = devm_kzalloc(&client->dev, 1143 sizeof(struct twl_client) * num_slaves, 1144 GFP_KERNEL); 1145 if (!twl_priv->twl_modules) { 1146 status = -ENOMEM; 1147 goto free; 1148 } 1149 1150 for (i = 0; i < num_slaves; i++) { 1151 struct twl_client *twl = &twl_priv->twl_modules[i]; 1152 1153 if (i == 0) { 1154 twl->client = client; 1155 } else { 1156 twl->client = i2c_new_dummy(client->adapter, 1157 client->addr + i); 1158 if (!twl->client) { 1159 dev_err(&client->dev, 1160 "can't attach client %d\n", i); 1161 status = -ENOMEM; 1162 goto fail; 1163 } 1164 } 1165 1166 twl->regmap = devm_regmap_init_i2c(twl->client, 1167 &twl_regmap_config[i]); 1168 if (IS_ERR(twl->regmap)) { 1169 status = PTR_ERR(twl->regmap); 1170 dev_err(&client->dev, 1171 "Failed to allocate regmap %d, err: %d\n", i, 1172 status); 1173 goto fail; 1174 } 1175 } 1176 1177 twl_priv->ready = true; 1178 1179 /* setup clock framework */ 1180 clocks_init(&pdev->dev, pdata ? pdata->clock : NULL); 1181 1182 /* read TWL IDCODE Register */ 1183 if (twl_class_is_4030()) { 1184 status = twl_read_idcode_register(); 1185 WARN(status < 0, "Error: reading twl_idcode register value\n"); 1186 } 1187 1188 /* Maybe init the T2 Interrupt subsystem */ 1189 if (client->irq) { 1190 if (twl_class_is_4030()) { 1191 twl4030_init_chip_irq(id->name); 1192 irq_base = twl4030_init_irq(&client->dev, client->irq); 1193 } else { 1194 irq_base = twl6030_init_irq(&client->dev, client->irq); 1195 } 1196 1197 if (irq_base < 0) { 1198 status = irq_base; 1199 goto fail; 1200 } 1201 } 1202 1203 /* 1204 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. 1205 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, 1206 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. 1207 * 1208 * Also, always enable SmartReflex bit as that's needed for omaps to 1209 * to do anything over I2C4 for voltage scaling even if SmartReflex 1210 * is disabled. Without the SmartReflex bit omap sys_clkreq idle 1211 * signal will never trigger for retention idle. 1212 */ 1213 if (twl_class_is_4030()) { 1214 u8 temp; 1215 1216 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); 1217 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ 1218 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); 1219 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); 1220 1221 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &temp, 1222 TWL4030_DCDC_GLOBAL_CFG); 1223 temp |= SMARTREFLEX_ENABLE; 1224 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, temp, 1225 TWL4030_DCDC_GLOBAL_CFG); 1226 } 1227 1228 if (node) { 1229 if (pdata) 1230 twl_auxdata_lookup[0].platform_data = pdata->gpio; 1231 status = of_platform_populate(node, NULL, twl_auxdata_lookup, 1232 &client->dev); 1233 } else { 1234 status = add_children(pdata, irq_base, id->driver_data); 1235 } 1236 1237 fail: 1238 if (status < 0) 1239 twl_remove(client); 1240 free: 1241 if (status < 0) 1242 platform_device_unregister(pdev); 1243 1244 return status; 1245 } 1246 1247 static const struct i2c_device_id twl_ids[] = { 1248 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ 1249 { "twl5030", 0 }, /* T2 updated */ 1250 { "twl5031", TWL5031 }, /* TWL5030 updated */ 1251 { "tps65950", 0 }, /* catalog version of twl5030 */ 1252 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ 1253 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ 1254 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED 1255 and vibrator. Charger in USB module*/ 1256 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ 1257 { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */ 1258 { /* end of list */ }, 1259 }; 1260 1261 /* One Client Driver , 4 Clients */ 1262 static struct i2c_driver twl_driver = { 1263 .driver.name = DRIVER_NAME, 1264 .id_table = twl_ids, 1265 .probe = twl_probe, 1266 .remove = twl_remove, 1267 }; 1268 builtin_i2c_driver(twl_driver); 1269