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/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/i2c/twl.h> 48 49 #include "twl-core.h" 50 51 /* 52 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power 53 * Management and System Companion Device" chips originally designed for 54 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, 55 * often at around 3 Mbit/sec, including for interrupt handling. 56 * 57 * This driver core provides genirq support for the interrupts emitted, 58 * by the various modules, and exports register access primitives. 59 * 60 * FIXME this driver currently requires use of the first interrupt line 61 * (and associated registers). 62 */ 63 64 #define DRIVER_NAME "twl" 65 66 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) 67 #define twl_has_keypad() true 68 #else 69 #define twl_has_keypad() false 70 #endif 71 72 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) 73 #define twl_has_gpio() true 74 #else 75 #define twl_has_gpio() false 76 #endif 77 78 #if defined(CONFIG_REGULATOR_TWL4030) \ 79 || defined(CONFIG_REGULATOR_TWL4030_MODULE) 80 #define twl_has_regulator() true 81 #else 82 #define twl_has_regulator() false 83 #endif 84 85 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) 86 #define twl_has_madc() true 87 #else 88 #define twl_has_madc() false 89 #endif 90 91 #ifdef CONFIG_TWL4030_POWER 92 #define twl_has_power() true 93 #else 94 #define twl_has_power() false 95 #endif 96 97 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) 98 #define twl_has_rtc() true 99 #else 100 #define twl_has_rtc() false 101 #endif 102 103 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\ 104 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE) 105 #define twl_has_usb() true 106 #else 107 #define twl_has_usb() false 108 #endif 109 110 #if defined(CONFIG_TWL4030_WATCHDOG) || \ 111 defined(CONFIG_TWL4030_WATCHDOG_MODULE) 112 #define twl_has_watchdog() true 113 #else 114 #define twl_has_watchdog() false 115 #endif 116 117 #if defined(CONFIG_MFD_TWL4030_AUDIO) || \ 118 defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) 119 #define twl_has_codec() true 120 #else 121 #define twl_has_codec() false 122 #endif 123 124 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE) 125 #define twl_has_bci() true 126 #else 127 #define twl_has_bci() false 128 #endif 129 130 /* Triton Core internal information (BEGIN) */ 131 132 /* Last - for index max*/ 133 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG 134 135 #define TWL_NUM_SLAVES 4 136 137 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ 138 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE) 139 #define twl_has_pwrbutton() true 140 #else 141 #define twl_has_pwrbutton() false 142 #endif 143 144 #define SUB_CHIP_ID0 0 145 #define SUB_CHIP_ID1 1 146 #define SUB_CHIP_ID2 2 147 #define SUB_CHIP_ID3 3 148 #define SUB_CHIP_ID_INVAL 0xff 149 150 #define TWL_MODULE_LAST TWL4030_MODULE_LAST 151 152 /* Base Address defns for twl4030_map[] */ 153 154 /* subchip/slave 0 - USB ID */ 155 #define TWL4030_BASEADD_USB 0x0000 156 157 /* subchip/slave 1 - AUD ID */ 158 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 159 #define TWL4030_BASEADD_GPIO 0x0098 160 #define TWL4030_BASEADD_INTBR 0x0085 161 #define TWL4030_BASEADD_PIH 0x0080 162 #define TWL4030_BASEADD_TEST 0x004C 163 164 /* subchip/slave 2 - AUX ID */ 165 #define TWL4030_BASEADD_INTERRUPTS 0x00B9 166 #define TWL4030_BASEADD_LED 0x00EE 167 #define TWL4030_BASEADD_MADC 0x0000 168 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 169 #define TWL4030_BASEADD_PRECHARGE 0x00AA 170 #define TWL4030_BASEADD_PWM0 0x00F8 171 #define TWL4030_BASEADD_PWM1 0x00FB 172 #define TWL4030_BASEADD_PWMA 0x00EF 173 #define TWL4030_BASEADD_PWMB 0x00F1 174 #define TWL4030_BASEADD_KEYPAD 0x00D2 175 176 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ 177 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's 178 one */ 179 180 /* subchip/slave 3 - POWER ID */ 181 #define TWL4030_BASEADD_BACKUP 0x0014 182 #define TWL4030_BASEADD_INT 0x002E 183 #define TWL4030_BASEADD_PM_MASTER 0x0036 184 #define TWL4030_BASEADD_PM_RECEIVER 0x005B 185 #define TWL4030_BASEADD_RTC 0x001C 186 #define TWL4030_BASEADD_SECURED_REG 0x0000 187 188 /* Triton Core internal information (END) */ 189 190 191 /* subchip/slave 0 0x48 - POWER */ 192 #define TWL6030_BASEADD_RTC 0x0000 193 #define TWL6030_BASEADD_MEM 0x0017 194 #define TWL6030_BASEADD_PM_MASTER 0x001F 195 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ 196 #define TWL6030_BASEADD_PM_MISC 0x00E2 197 #define TWL6030_BASEADD_PM_PUPD 0x00F0 198 199 /* subchip/slave 1 0x49 - FEATURE */ 200 #define TWL6030_BASEADD_USB 0x0000 201 #define TWL6030_BASEADD_GPADC_CTRL 0x002E 202 #define TWL6030_BASEADD_AUX 0x0090 203 #define TWL6030_BASEADD_PWM 0x00BA 204 #define TWL6030_BASEADD_GASGAUGE 0x00C0 205 #define TWL6030_BASEADD_PIH 0x00D0 206 #define TWL6030_BASEADD_CHARGER 0x00E0 207 #define TWL6025_BASEADD_CHARGER 0x00DA 208 209 /* subchip/slave 2 0x4A - DFT */ 210 #define TWL6030_BASEADD_DIEID 0x00C0 211 212 /* subchip/slave 3 0x4B - AUDIO */ 213 #define TWL6030_BASEADD_AUDIO 0x0000 214 #define TWL6030_BASEADD_RSV 0x0000 215 #define TWL6030_BASEADD_ZERO 0x0000 216 217 /* Few power values */ 218 #define R_CFG_BOOT 0x05 219 220 /* some fields in R_CFG_BOOT */ 221 #define HFCLK_FREQ_19p2_MHZ (1 << 0) 222 #define HFCLK_FREQ_26_MHZ (2 << 0) 223 #define HFCLK_FREQ_38p4_MHZ (3 << 0) 224 #define HIGH_PERF_SQ (1 << 3) 225 #define CK32K_LOWPWR_EN (1 << 7) 226 227 /*----------------------------------------------------------------------*/ 228 229 /* is driver active, bound to a chip? */ 230 static bool inuse; 231 232 /* TWL IDCODE Register value */ 233 static u32 twl_idcode; 234 235 static unsigned int twl_id; 236 unsigned int twl_rev(void) 237 { 238 return twl_id; 239 } 240 EXPORT_SYMBOL(twl_rev); 241 242 /* Structure for each TWL4030/TWL6030 Slave */ 243 struct twl_client { 244 struct i2c_client *client; 245 u8 address; 246 247 /* max numb of i2c_msg required is for read =2 */ 248 struct i2c_msg xfer_msg[2]; 249 250 /* To lock access to xfer_msg */ 251 struct mutex xfer_lock; 252 }; 253 254 static struct twl_client twl_modules[TWL_NUM_SLAVES]; 255 256 /* mapping the module id to slave id and base address */ 257 struct twl_mapping { 258 unsigned char sid; /* Slave ID */ 259 unsigned char base; /* base address */ 260 }; 261 static struct twl_mapping *twl_map; 262 263 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { 264 /* 265 * NOTE: don't change this table without updating the 266 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 267 * so they continue to match the order in this table. 268 */ 269 270 { 0, TWL4030_BASEADD_USB }, 271 272 { 1, TWL4030_BASEADD_AUDIO_VOICE }, 273 { 1, TWL4030_BASEADD_GPIO }, 274 { 1, TWL4030_BASEADD_INTBR }, 275 { 1, TWL4030_BASEADD_PIH }, 276 { 1, TWL4030_BASEADD_TEST }, 277 278 { 2, TWL4030_BASEADD_KEYPAD }, 279 { 2, TWL4030_BASEADD_MADC }, 280 { 2, TWL4030_BASEADD_INTERRUPTS }, 281 { 2, TWL4030_BASEADD_LED }, 282 { 2, TWL4030_BASEADD_MAIN_CHARGE }, 283 { 2, TWL4030_BASEADD_PRECHARGE }, 284 { 2, TWL4030_BASEADD_PWM0 }, 285 { 2, TWL4030_BASEADD_PWM1 }, 286 { 2, TWL4030_BASEADD_PWMA }, 287 { 2, TWL4030_BASEADD_PWMB }, 288 { 2, TWL5031_BASEADD_ACCESSORY }, 289 { 2, TWL5031_BASEADD_INTERRUPTS }, 290 291 { 3, TWL4030_BASEADD_BACKUP }, 292 { 3, TWL4030_BASEADD_INT }, 293 { 3, TWL4030_BASEADD_PM_MASTER }, 294 { 3, TWL4030_BASEADD_PM_RECEIVER }, 295 { 3, TWL4030_BASEADD_RTC }, 296 { 3, TWL4030_BASEADD_SECURED_REG }, 297 }; 298 299 static struct twl_mapping twl6030_map[] = { 300 /* 301 * NOTE: don't change this table without updating the 302 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 303 * so they continue to match the order in this table. 304 */ 305 { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, 306 { SUB_CHIP_ID_INVAL, TWL6030_BASEADD_AUDIO }, 307 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, 308 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 309 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, 310 311 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 312 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 313 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, 314 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 315 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 316 317 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, 318 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, 319 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, 320 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO }, 321 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO }, 322 323 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, 324 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, 325 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 326 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 327 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 328 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, 329 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, 330 331 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, 332 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, 333 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER }, 334 }; 335 336 /*----------------------------------------------------------------------*/ 337 338 /* Exported Functions */ 339 340 /** 341 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 342 * @mod_no: module number 343 * @value: an array of num_bytes+1 containing data to write 344 * @reg: register address (just offset will do) 345 * @num_bytes: number of bytes to transfer 346 * 347 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and 348 * valid data starts at Offset 1. 349 * 350 * Returns the result of operation - 0 is success 351 */ 352 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 353 { 354 int ret; 355 int sid; 356 struct twl_client *twl; 357 struct i2c_msg *msg; 358 359 if (unlikely(mod_no > TWL_MODULE_LAST)) { 360 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 361 return -EPERM; 362 } 363 if (unlikely(!inuse)) { 364 pr_err("%s: not initialized\n", DRIVER_NAME); 365 return -EPERM; 366 } 367 sid = twl_map[mod_no].sid; 368 if (unlikely(sid == SUB_CHIP_ID_INVAL)) { 369 pr_err("%s: module %d is not part of the pmic\n", 370 DRIVER_NAME, mod_no); 371 return -EINVAL; 372 } 373 twl = &twl_modules[sid]; 374 375 mutex_lock(&twl->xfer_lock); 376 /* 377 * [MSG1]: fill the register address data 378 * fill the data Tx buffer 379 */ 380 msg = &twl->xfer_msg[0]; 381 msg->addr = twl->address; 382 msg->len = num_bytes + 1; 383 msg->flags = 0; 384 msg->buf = value; 385 /* over write the first byte of buffer with the register address */ 386 *value = twl_map[mod_no].base + reg; 387 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); 388 mutex_unlock(&twl->xfer_lock); 389 390 /* i2c_transfer returns number of messages transferred */ 391 if (ret != 1) { 392 pr_err("%s: i2c_write failed to transfer all messages\n", 393 DRIVER_NAME); 394 if (ret < 0) 395 return ret; 396 else 397 return -EIO; 398 } else { 399 return 0; 400 } 401 } 402 EXPORT_SYMBOL(twl_i2c_write); 403 404 /** 405 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 406 * @mod_no: module number 407 * @value: an array of num_bytes containing data to be read 408 * @reg: register address (just offset will do) 409 * @num_bytes: number of bytes to transfer 410 * 411 * Returns result of operation - num_bytes is success else failure. 412 */ 413 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 414 { 415 int ret; 416 u8 val; 417 int sid; 418 struct twl_client *twl; 419 struct i2c_msg *msg; 420 421 if (unlikely(mod_no > TWL_MODULE_LAST)) { 422 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 423 return -EPERM; 424 } 425 if (unlikely(!inuse)) { 426 pr_err("%s: not initialized\n", DRIVER_NAME); 427 return -EPERM; 428 } 429 sid = twl_map[mod_no].sid; 430 if (unlikely(sid == SUB_CHIP_ID_INVAL)) { 431 pr_err("%s: module %d is not part of the pmic\n", 432 DRIVER_NAME, mod_no); 433 return -EINVAL; 434 } 435 twl = &twl_modules[sid]; 436 437 mutex_lock(&twl->xfer_lock); 438 /* [MSG1] fill the register address data */ 439 msg = &twl->xfer_msg[0]; 440 msg->addr = twl->address; 441 msg->len = 1; 442 msg->flags = 0; /* Read the register value */ 443 val = twl_map[mod_no].base + reg; 444 msg->buf = &val; 445 /* [MSG2] fill the data rx buffer */ 446 msg = &twl->xfer_msg[1]; 447 msg->addr = twl->address; 448 msg->flags = I2C_M_RD; /* Read the register value */ 449 msg->len = num_bytes; /* only n bytes */ 450 msg->buf = value; 451 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); 452 mutex_unlock(&twl->xfer_lock); 453 454 /* i2c_transfer returns number of messages transferred */ 455 if (ret != 2) { 456 pr_err("%s: i2c_read failed to transfer all messages\n", 457 DRIVER_NAME); 458 if (ret < 0) 459 return ret; 460 else 461 return -EIO; 462 } else { 463 return 0; 464 } 465 } 466 EXPORT_SYMBOL(twl_i2c_read); 467 468 /** 469 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 470 * @mod_no: module number 471 * @value: the value to be written 8 bit 472 * @reg: register address (just offset will do) 473 * 474 * Returns result of operation - 0 is success 475 */ 476 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) 477 { 478 479 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ 480 u8 temp_buffer[2] = { 0 }; 481 /* offset 1 contains the data */ 482 temp_buffer[1] = value; 483 return twl_i2c_write(mod_no, temp_buffer, reg, 1); 484 } 485 EXPORT_SYMBOL(twl_i2c_write_u8); 486 487 /** 488 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 489 * @mod_no: module number 490 * @value: the value read 8 bit 491 * @reg: register address (just offset will do) 492 * 493 * Returns result of operation - 0 is success 494 */ 495 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) 496 { 497 return twl_i2c_read(mod_no, value, reg, 1); 498 } 499 EXPORT_SYMBOL(twl_i2c_read_u8); 500 501 /*----------------------------------------------------------------------*/ 502 503 /** 504 * twl_read_idcode_register - API to read the IDCODE register. 505 * 506 * Unlocks the IDCODE register and read the 32 bit value. 507 */ 508 static int twl_read_idcode_register(void) 509 { 510 int err; 511 512 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, 513 REG_UNLOCK_TEST_REG); 514 if (err) { 515 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); 516 goto fail; 517 } 518 519 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode), 520 REG_IDCODE_7_0, 4); 521 if (err) { 522 pr_err("TWL4030: unable to read IDCODE -%d\n", err); 523 goto fail; 524 } 525 526 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); 527 if (err) 528 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); 529 fail: 530 return err; 531 } 532 533 /** 534 * twl_get_type - API to get TWL Si type. 535 * 536 * Api to get the TWL Si type from IDCODE value. 537 */ 538 int twl_get_type(void) 539 { 540 return TWL_SIL_TYPE(twl_idcode); 541 } 542 EXPORT_SYMBOL_GPL(twl_get_type); 543 544 /** 545 * twl_get_version - API to get TWL Si version. 546 * 547 * Api to get the TWL Si version from IDCODE value. 548 */ 549 int twl_get_version(void) 550 { 551 return TWL_SIL_REV(twl_idcode); 552 } 553 EXPORT_SYMBOL_GPL(twl_get_version); 554 555 static struct device * 556 add_numbered_child(unsigned chip, const char *name, int num, 557 void *pdata, unsigned pdata_len, 558 bool can_wakeup, int irq0, int irq1) 559 { 560 struct platform_device *pdev; 561 struct twl_client *twl = &twl_modules[chip]; 562 int status; 563 564 pdev = platform_device_alloc(name, num); 565 if (!pdev) { 566 dev_dbg(&twl->client->dev, "can't alloc dev\n"); 567 status = -ENOMEM; 568 goto err; 569 } 570 571 device_init_wakeup(&pdev->dev, can_wakeup); 572 pdev->dev.parent = &twl->client->dev; 573 574 if (pdata) { 575 status = platform_device_add_data(pdev, pdata, pdata_len); 576 if (status < 0) { 577 dev_dbg(&pdev->dev, "can't add platform_data\n"); 578 goto err; 579 } 580 } 581 582 if (irq0) { 583 struct resource r[2] = { 584 { .start = irq0, .flags = IORESOURCE_IRQ, }, 585 { .start = irq1, .flags = IORESOURCE_IRQ, }, 586 }; 587 588 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); 589 if (status < 0) { 590 dev_dbg(&pdev->dev, "can't add irqs\n"); 591 goto err; 592 } 593 } 594 595 status = platform_device_add(pdev); 596 597 err: 598 if (status < 0) { 599 platform_device_put(pdev); 600 dev_err(&twl->client->dev, "can't add %s dev\n", name); 601 return ERR_PTR(status); 602 } 603 return &pdev->dev; 604 } 605 606 static inline struct device *add_child(unsigned chip, const char *name, 607 void *pdata, unsigned pdata_len, 608 bool can_wakeup, int irq0, int irq1) 609 { 610 return add_numbered_child(chip, name, -1, pdata, pdata_len, 611 can_wakeup, irq0, irq1); 612 } 613 614 static struct device * 615 add_regulator_linked(int num, struct regulator_init_data *pdata, 616 struct regulator_consumer_supply *consumers, 617 unsigned num_consumers, unsigned long features) 618 { 619 unsigned sub_chip_id; 620 struct twl_regulator_driver_data drv_data; 621 622 /* regulator framework demands init_data ... */ 623 if (!pdata) 624 return NULL; 625 626 if (consumers) { 627 pdata->consumer_supplies = consumers; 628 pdata->num_consumer_supplies = num_consumers; 629 } 630 631 if (pdata->driver_data) { 632 /* If we have existing drv_data, just add the flags */ 633 struct twl_regulator_driver_data *tmp; 634 tmp = pdata->driver_data; 635 tmp->features |= features; 636 } else { 637 /* add new driver data struct, used only during init */ 638 drv_data.features = features; 639 drv_data.set_voltage = NULL; 640 drv_data.get_voltage = NULL; 641 drv_data.data = NULL; 642 pdata->driver_data = &drv_data; 643 } 644 645 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ 646 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; 647 return add_numbered_child(sub_chip_id, "twl_reg", num, 648 pdata, sizeof(*pdata), false, 0, 0); 649 } 650 651 static struct device * 652 add_regulator(int num, struct regulator_init_data *pdata, 653 unsigned long features) 654 { 655 return add_regulator_linked(num, pdata, NULL, 0, features); 656 } 657 658 /* 659 * NOTE: We know the first 8 IRQs after pdata->base_irq are 660 * for the PIH, and the next are for the PWR_INT SIH, since 661 * that's how twl_init_irq() sets things up. 662 */ 663 664 static int 665 add_children(struct twl4030_platform_data *pdata, unsigned irq_base, 666 unsigned long features) 667 { 668 struct device *child; 669 unsigned sub_chip_id; 670 671 if (twl_has_gpio() && pdata->gpio) { 672 child = add_child(SUB_CHIP_ID1, "twl4030_gpio", 673 pdata->gpio, sizeof(*pdata->gpio), 674 false, irq_base + GPIO_INTR_OFFSET, 0); 675 if (IS_ERR(child)) 676 return PTR_ERR(child); 677 } 678 679 if (twl_has_keypad() && pdata->keypad) { 680 child = add_child(SUB_CHIP_ID2, "twl4030_keypad", 681 pdata->keypad, sizeof(*pdata->keypad), 682 true, irq_base + KEYPAD_INTR_OFFSET, 0); 683 if (IS_ERR(child)) 684 return PTR_ERR(child); 685 } 686 687 if (twl_has_madc() && pdata->madc) { 688 child = add_child(2, "twl4030_madc", 689 pdata->madc, sizeof(*pdata->madc), 690 true, irq_base + MADC_INTR_OFFSET, 0); 691 if (IS_ERR(child)) 692 return PTR_ERR(child); 693 } 694 695 if (twl_has_rtc()) { 696 /* 697 * REVISIT platform_data here currently might expose the 698 * "msecure" line ... but for now we just expect board 699 * setup to tell the chip "it's always ok to SET_TIME". 700 * Eventually, Linux might become more aware of such 701 * HW security concerns, and "least privilege". 702 */ 703 sub_chip_id = twl_map[TWL_MODULE_RTC].sid; 704 child = add_child(sub_chip_id, "twl_rtc", 705 NULL, 0, 706 true, irq_base + RTC_INTR_OFFSET, 0); 707 if (IS_ERR(child)) 708 return PTR_ERR(child); 709 } 710 711 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { 712 713 static struct regulator_consumer_supply usb1v5 = { 714 .supply = "usb1v5", 715 }; 716 static struct regulator_consumer_supply usb1v8 = { 717 .supply = "usb1v8", 718 }; 719 static struct regulator_consumer_supply usb3v1 = { 720 .supply = "usb3v1", 721 }; 722 723 /* First add the regulators so that they can be used by transceiver */ 724 if (twl_has_regulator()) { 725 /* this is a template that gets copied */ 726 struct regulator_init_data usb_fixed = { 727 .constraints.valid_modes_mask = 728 REGULATOR_MODE_NORMAL 729 | REGULATOR_MODE_STANDBY, 730 .constraints.valid_ops_mask = 731 REGULATOR_CHANGE_MODE 732 | REGULATOR_CHANGE_STATUS, 733 }; 734 735 child = add_regulator_linked(TWL4030_REG_VUSB1V5, 736 &usb_fixed, &usb1v5, 1, 737 features); 738 if (IS_ERR(child)) 739 return PTR_ERR(child); 740 741 child = add_regulator_linked(TWL4030_REG_VUSB1V8, 742 &usb_fixed, &usb1v8, 1, 743 features); 744 if (IS_ERR(child)) 745 return PTR_ERR(child); 746 747 child = add_regulator_linked(TWL4030_REG_VUSB3V1, 748 &usb_fixed, &usb3v1, 1, 749 features); 750 if (IS_ERR(child)) 751 return PTR_ERR(child); 752 753 } 754 755 child = add_child(0, "twl4030_usb", 756 pdata->usb, sizeof(*pdata->usb), 757 true, 758 /* irq0 = USB_PRES, irq1 = USB */ 759 irq_base + USB_PRES_INTR_OFFSET, 760 irq_base + USB_INTR_OFFSET); 761 762 if (IS_ERR(child)) 763 return PTR_ERR(child); 764 765 /* we need to connect regulators to this transceiver */ 766 if (twl_has_regulator() && child) { 767 usb1v5.dev_name = dev_name(child); 768 usb1v8.dev_name = dev_name(child); 769 usb3v1.dev_name = dev_name(child); 770 } 771 } 772 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) { 773 774 static struct regulator_consumer_supply usb3v3; 775 int regulator; 776 777 if (twl_has_regulator()) { 778 /* this is a template that gets copied */ 779 struct regulator_init_data usb_fixed = { 780 .constraints.valid_modes_mask = 781 REGULATOR_MODE_NORMAL 782 | REGULATOR_MODE_STANDBY, 783 .constraints.valid_ops_mask = 784 REGULATOR_CHANGE_MODE 785 | REGULATOR_CHANGE_STATUS, 786 }; 787 788 if (features & TWL6025_SUBCLASS) { 789 usb3v3.supply = "ldousb"; 790 regulator = TWL6025_REG_LDOUSB; 791 } else { 792 usb3v3.supply = "vusb"; 793 regulator = TWL6030_REG_VUSB; 794 } 795 child = add_regulator_linked(regulator, &usb_fixed, 796 &usb3v3, 1, 797 features); 798 if (IS_ERR(child)) 799 return PTR_ERR(child); 800 } 801 802 pdata->usb->features = features; 803 804 child = add_child(0, "twl6030_usb", 805 pdata->usb, sizeof(*pdata->usb), 806 true, 807 /* irq1 = VBUS_PRES, irq0 = USB ID */ 808 irq_base + USBOTG_INTR_OFFSET, 809 irq_base + USB_PRES_INTR_OFFSET); 810 811 if (IS_ERR(child)) 812 return PTR_ERR(child); 813 /* we need to connect regulators to this transceiver */ 814 if (twl_has_regulator() && child) 815 usb3v3.dev_name = dev_name(child); 816 } else if (twl_has_regulator() && twl_class_is_6030()) { 817 if (features & TWL6025_SUBCLASS) 818 child = add_regulator(TWL6025_REG_LDOUSB, 819 pdata->ldousb, features); 820 else 821 child = add_regulator(TWL6030_REG_VUSB, 822 pdata->vusb, features); 823 824 if (IS_ERR(child)) 825 return PTR_ERR(child); 826 } 827 828 if (twl_has_watchdog() && twl_class_is_4030()) { 829 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); 830 if (IS_ERR(child)) 831 return PTR_ERR(child); 832 } 833 834 if (twl_has_pwrbutton() && twl_class_is_4030()) { 835 child = add_child(1, "twl4030_pwrbutton", 836 NULL, 0, true, irq_base + 8 + 0, 0); 837 if (IS_ERR(child)) 838 return PTR_ERR(child); 839 } 840 841 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) { 842 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 843 child = add_child(sub_chip_id, "twl4030-audio", 844 pdata->audio, sizeof(*pdata->audio), 845 false, 0, 0); 846 if (IS_ERR(child)) 847 return PTR_ERR(child); 848 } 849 850 /* twl4030 regulators */ 851 if (twl_has_regulator() && twl_class_is_4030()) { 852 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, 853 features); 854 if (IS_ERR(child)) 855 return PTR_ERR(child); 856 857 child = add_regulator(TWL4030_REG_VIO, pdata->vio, 858 features); 859 if (IS_ERR(child)) 860 return PTR_ERR(child); 861 862 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, 863 features); 864 if (IS_ERR(child)) 865 return PTR_ERR(child); 866 867 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, 868 features); 869 if (IS_ERR(child)) 870 return PTR_ERR(child); 871 872 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, 873 features); 874 if (IS_ERR(child)) 875 return PTR_ERR(child); 876 877 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, 878 features); 879 if (IS_ERR(child)) 880 return PTR_ERR(child); 881 882 child = add_regulator((features & TWL4030_VAUX2) 883 ? TWL4030_REG_VAUX2_4030 884 : TWL4030_REG_VAUX2, 885 pdata->vaux2, features); 886 if (IS_ERR(child)) 887 return PTR_ERR(child); 888 889 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, 890 features); 891 if (IS_ERR(child)) 892 return PTR_ERR(child); 893 894 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, 895 features); 896 if (IS_ERR(child)) 897 return PTR_ERR(child); 898 899 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, 900 features); 901 if (IS_ERR(child)) 902 return PTR_ERR(child); 903 } 904 905 /* maybe add LDOs that are omitted on cost-reduced parts */ 906 if (twl_has_regulator() && !(features & TPS_SUBSET) 907 && twl_class_is_4030()) { 908 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, 909 features); 910 if (IS_ERR(child)) 911 return PTR_ERR(child); 912 913 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, 914 features); 915 if (IS_ERR(child)) 916 return PTR_ERR(child); 917 918 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, 919 features); 920 if (IS_ERR(child)) 921 return PTR_ERR(child); 922 923 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, 924 features); 925 if (IS_ERR(child)) 926 return PTR_ERR(child); 927 928 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, 929 features); 930 if (IS_ERR(child)) 931 return PTR_ERR(child); 932 933 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, 934 features); 935 if (IS_ERR(child)) 936 return PTR_ERR(child); 937 } 938 939 /* twl6030 regulators */ 940 if (twl_has_regulator() && twl_class_is_6030() && 941 !(features & TWL6025_SUBCLASS)) { 942 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1, 943 features); 944 if (IS_ERR(child)) 945 return PTR_ERR(child); 946 947 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2, 948 features); 949 if (IS_ERR(child)) 950 return PTR_ERR(child); 951 952 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3, 953 features); 954 if (IS_ERR(child)) 955 return PTR_ERR(child); 956 957 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8, 958 features); 959 if (IS_ERR(child)) 960 return PTR_ERR(child); 961 962 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1, 963 features); 964 if (IS_ERR(child)) 965 return PTR_ERR(child); 966 967 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc, 968 features); 969 if (IS_ERR(child)) 970 return PTR_ERR(child); 971 972 child = add_regulator(TWL6030_REG_VPP, pdata->vpp, 973 features); 974 if (IS_ERR(child)) 975 return PTR_ERR(child); 976 977 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim, 978 features); 979 if (IS_ERR(child)) 980 return PTR_ERR(child); 981 982 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio, 983 features); 984 if (IS_ERR(child)) 985 return PTR_ERR(child); 986 987 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac, 988 features); 989 if (IS_ERR(child)) 990 return PTR_ERR(child); 991 992 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1, 993 features); 994 if (IS_ERR(child)) 995 return PTR_ERR(child); 996 997 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2, 998 features); 999 if (IS_ERR(child)) 1000 return PTR_ERR(child); 1001 1002 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3, 1003 features); 1004 if (IS_ERR(child)) 1005 return PTR_ERR(child); 1006 1007 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg, 1008 features); 1009 if (IS_ERR(child)) 1010 return PTR_ERR(child); 1011 } 1012 1013 /* 6030 and 6025 share this regulator */ 1014 if (twl_has_regulator() && twl_class_is_6030()) { 1015 child = add_regulator(TWL6030_REG_VANA, pdata->vana, 1016 features); 1017 if (IS_ERR(child)) 1018 return PTR_ERR(child); 1019 } 1020 1021 /* twl6025 regulators */ 1022 if (twl_has_regulator() && twl_class_is_6030() && 1023 (features & TWL6025_SUBCLASS)) { 1024 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5, 1025 features); 1026 if (IS_ERR(child)) 1027 return PTR_ERR(child); 1028 1029 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1, 1030 features); 1031 if (IS_ERR(child)) 1032 return PTR_ERR(child); 1033 1034 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7, 1035 features); 1036 if (IS_ERR(child)) 1037 return PTR_ERR(child); 1038 1039 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6, 1040 features); 1041 if (IS_ERR(child)) 1042 return PTR_ERR(child); 1043 1044 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln, 1045 features); 1046 if (IS_ERR(child)) 1047 return PTR_ERR(child); 1048 1049 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2, 1050 features); 1051 if (IS_ERR(child)) 1052 return PTR_ERR(child); 1053 1054 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4, 1055 features); 1056 if (IS_ERR(child)) 1057 return PTR_ERR(child); 1058 1059 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3, 1060 features); 1061 if (IS_ERR(child)) 1062 return PTR_ERR(child); 1063 1064 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3, 1065 features); 1066 if (IS_ERR(child)) 1067 return PTR_ERR(child); 1068 1069 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4, 1070 features); 1071 if (IS_ERR(child)) 1072 return PTR_ERR(child); 1073 1074 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025, 1075 features); 1076 if (IS_ERR(child)) 1077 return PTR_ERR(child); 1078 1079 } 1080 1081 if (twl_has_bci() && pdata->bci && 1082 !(features & (TPS_SUBSET | TWL5031))) { 1083 child = add_child(3, "twl4030_bci", 1084 pdata->bci, sizeof(*pdata->bci), false, 1085 /* irq0 = CHG_PRES, irq1 = BCI */ 1086 irq_base + BCI_PRES_INTR_OFFSET, 1087 irq_base + BCI_INTR_OFFSET); 1088 if (IS_ERR(child)) 1089 return PTR_ERR(child); 1090 } 1091 1092 return 0; 1093 } 1094 1095 /*----------------------------------------------------------------------*/ 1096 1097 /* 1098 * These three functions initialize the on-chip clock framework, 1099 * letting it generate the right frequencies for USB, MADC, and 1100 * other purposes. 1101 */ 1102 static inline int __init protect_pm_master(void) 1103 { 1104 int e = 0; 1105 1106 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, 1107 TWL4030_PM_MASTER_PROTECT_KEY); 1108 return e; 1109 } 1110 1111 static inline int __init unprotect_pm_master(void) 1112 { 1113 int e = 0; 1114 1115 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 1116 TWL4030_PM_MASTER_KEY_CFG1, 1117 TWL4030_PM_MASTER_PROTECT_KEY); 1118 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 1119 TWL4030_PM_MASTER_KEY_CFG2, 1120 TWL4030_PM_MASTER_PROTECT_KEY); 1121 1122 return e; 1123 } 1124 1125 static void clocks_init(struct device *dev, 1126 struct twl4030_clock_init_data *clock) 1127 { 1128 int e = 0; 1129 struct clk *osc; 1130 u32 rate; 1131 u8 ctrl = HFCLK_FREQ_26_MHZ; 1132 1133 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) 1134 if (cpu_is_omap2430()) 1135 osc = clk_get(dev, "osc_ck"); 1136 else 1137 osc = clk_get(dev, "osc_sys_ck"); 1138 1139 if (IS_ERR(osc)) { 1140 printk(KERN_WARNING "Skipping twl internal clock init and " 1141 "using bootloader value (unknown osc rate)\n"); 1142 return; 1143 } 1144 1145 rate = clk_get_rate(osc); 1146 clk_put(osc); 1147 1148 #else 1149 /* REVISIT for non-OMAP systems, pass the clock rate from 1150 * board init code, using platform_data. 1151 */ 1152 osc = ERR_PTR(-EIO); 1153 1154 printk(KERN_WARNING "Skipping twl internal clock init and " 1155 "using bootloader value (unknown osc rate)\n"); 1156 1157 return; 1158 #endif 1159 1160 switch (rate) { 1161 case 19200000: 1162 ctrl = HFCLK_FREQ_19p2_MHZ; 1163 break; 1164 case 26000000: 1165 ctrl = HFCLK_FREQ_26_MHZ; 1166 break; 1167 case 38400000: 1168 ctrl = HFCLK_FREQ_38p4_MHZ; 1169 break; 1170 } 1171 1172 ctrl |= HIGH_PERF_SQ; 1173 if (clock && clock->ck32k_lowpwr_enable) 1174 ctrl |= CK32K_LOWPWR_EN; 1175 1176 e |= unprotect_pm_master(); 1177 /* effect->MADC+USB ck en */ 1178 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); 1179 e |= protect_pm_master(); 1180 1181 if (e < 0) 1182 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); 1183 } 1184 1185 /*----------------------------------------------------------------------*/ 1186 1187 1188 static int twl_remove(struct i2c_client *client) 1189 { 1190 unsigned i, num_slaves; 1191 int status; 1192 1193 if (twl_class_is_4030()) { 1194 status = twl4030_exit_irq(); 1195 num_slaves = TWL_NUM_SLAVES; 1196 } else { 1197 status = twl6030_exit_irq(); 1198 num_slaves = TWL_NUM_SLAVES - 1; 1199 } 1200 1201 if (status < 0) 1202 return status; 1203 1204 for (i = 0; i < num_slaves; i++) { 1205 struct twl_client *twl = &twl_modules[i]; 1206 1207 if (twl->client && twl->client != client) 1208 i2c_unregister_device(twl->client); 1209 twl_modules[i].client = NULL; 1210 } 1211 inuse = false; 1212 return 0; 1213 } 1214 1215 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */ 1216 static int __devinit 1217 twl_probe(struct i2c_client *client, const struct i2c_device_id *id) 1218 { 1219 struct twl4030_platform_data *pdata = client->dev.platform_data; 1220 struct device_node *node = client->dev.of_node; 1221 int irq_base = 0; 1222 int status; 1223 unsigned i, num_slaves; 1224 1225 if (node && !pdata) { 1226 /* 1227 * XXX: Temporary pdata until the information is correctly 1228 * retrieved by every TWL modules from DT. 1229 */ 1230 pdata = devm_kzalloc(&client->dev, 1231 sizeof(struct twl4030_platform_data), 1232 GFP_KERNEL); 1233 if (!pdata) 1234 return -ENOMEM; 1235 } 1236 1237 if (!pdata) { 1238 dev_dbg(&client->dev, "no platform data?\n"); 1239 return -EINVAL; 1240 } 1241 1242 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { 1243 dev_dbg(&client->dev, "can't talk I2C?\n"); 1244 return -EIO; 1245 } 1246 1247 if (inuse) { 1248 dev_dbg(&client->dev, "driver is already in use\n"); 1249 return -EBUSY; 1250 } 1251 1252 if ((id->driver_data) & TWL6030_CLASS) { 1253 twl_id = TWL6030_CLASS_ID; 1254 twl_map = &twl6030_map[0]; 1255 num_slaves = TWL_NUM_SLAVES - 1; 1256 } else { 1257 twl_id = TWL4030_CLASS_ID; 1258 twl_map = &twl4030_map[0]; 1259 num_slaves = TWL_NUM_SLAVES; 1260 } 1261 1262 for (i = 0; i < num_slaves; i++) { 1263 struct twl_client *twl = &twl_modules[i]; 1264 1265 twl->address = client->addr + i; 1266 if (i == 0) { 1267 twl->client = client; 1268 } else { 1269 twl->client = i2c_new_dummy(client->adapter, 1270 twl->address); 1271 if (!twl->client) { 1272 dev_err(&client->dev, 1273 "can't attach client %d\n", i); 1274 status = -ENOMEM; 1275 goto fail; 1276 } 1277 } 1278 mutex_init(&twl->xfer_lock); 1279 } 1280 1281 inuse = true; 1282 1283 /* setup clock framework */ 1284 clocks_init(&client->dev, pdata->clock); 1285 1286 /* read TWL IDCODE Register */ 1287 if (twl_id == TWL4030_CLASS_ID) { 1288 status = twl_read_idcode_register(); 1289 WARN(status < 0, "Error: reading twl_idcode register value\n"); 1290 } 1291 1292 /* load power event scripts */ 1293 if (twl_has_power() && pdata->power) 1294 twl4030_power_init(pdata->power); 1295 1296 /* Maybe init the T2 Interrupt subsystem */ 1297 if (client->irq) { 1298 if (twl_class_is_4030()) { 1299 twl4030_init_chip_irq(id->name); 1300 irq_base = twl4030_init_irq(&client->dev, client->irq); 1301 } else { 1302 irq_base = twl6030_init_irq(&client->dev, client->irq); 1303 } 1304 1305 if (irq_base < 0) { 1306 status = irq_base; 1307 goto fail; 1308 } 1309 } 1310 1311 /* 1312 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. 1313 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, 1314 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. 1315 */ 1316 if (twl_class_is_4030()) { 1317 u8 temp; 1318 1319 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); 1320 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ 1321 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); 1322 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); 1323 } 1324 1325 status = -ENODEV; 1326 if (node) 1327 status = of_platform_populate(node, NULL, NULL, &client->dev); 1328 if (status) 1329 status = add_children(pdata, irq_base, id->driver_data); 1330 1331 fail: 1332 if (status < 0) 1333 twl_remove(client); 1334 1335 return status; 1336 } 1337 1338 static const struct i2c_device_id twl_ids[] = { 1339 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ 1340 { "twl5030", 0 }, /* T2 updated */ 1341 { "twl5031", TWL5031 }, /* TWL5030 updated */ 1342 { "tps65950", 0 }, /* catalog version of twl5030 */ 1343 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ 1344 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ 1345 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED 1346 and vibrator. Charger in USB module*/ 1347 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ 1348 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */ 1349 { /* end of list */ }, 1350 }; 1351 MODULE_DEVICE_TABLE(i2c, twl_ids); 1352 1353 /* One Client Driver , 4 Clients */ 1354 static struct i2c_driver twl_driver = { 1355 .driver.name = DRIVER_NAME, 1356 .id_table = twl_ids, 1357 .probe = twl_probe, 1358 .remove = twl_remove, 1359 }; 1360 1361 static int __init twl_init(void) 1362 { 1363 return i2c_add_driver(&twl_driver); 1364 } 1365 subsys_initcall(twl_init); 1366 1367 static void __exit twl_exit(void) 1368 { 1369 i2c_del_driver(&twl_driver); 1370 } 1371 module_exit(twl_exit); 1372 1373 MODULE_AUTHOR("Texas Instruments, Inc."); 1374 MODULE_DESCRIPTION("I2C Core interface for TWL"); 1375 MODULE_LICENSE("GPL"); 1376