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/irqdomain.h> 42 43 #include <linux/regulator/machine.h> 44 45 #include <linux/i2c.h> 46 #include <linux/i2c/twl.h> 47 48 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) 49 #include <plat/cpu.h> 50 #endif 51 52 /* 53 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power 54 * Management and System Companion Device" chips originally designed for 55 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, 56 * often at around 3 Mbit/sec, including for interrupt handling. 57 * 58 * This driver core provides genirq support for the interrupts emitted, 59 * by the various modules, and exports register access primitives. 60 * 61 * FIXME this driver currently requires use of the first interrupt line 62 * (and associated registers). 63 */ 64 65 #define DRIVER_NAME "twl" 66 67 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) 68 #define twl_has_keypad() true 69 #else 70 #define twl_has_keypad() false 71 #endif 72 73 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) 74 #define twl_has_gpio() true 75 #else 76 #define twl_has_gpio() false 77 #endif 78 79 #if defined(CONFIG_REGULATOR_TWL4030) \ 80 || defined(CONFIG_REGULATOR_TWL4030_MODULE) 81 #define twl_has_regulator() true 82 #else 83 #define twl_has_regulator() false 84 #endif 85 86 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) 87 #define twl_has_madc() true 88 #else 89 #define twl_has_madc() false 90 #endif 91 92 #ifdef CONFIG_TWL4030_POWER 93 #define twl_has_power() true 94 #else 95 #define twl_has_power() false 96 #endif 97 98 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) 99 #define twl_has_rtc() true 100 #else 101 #define twl_has_rtc() false 102 #endif 103 104 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\ 105 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE) 106 #define twl_has_usb() true 107 #else 108 #define twl_has_usb() false 109 #endif 110 111 #if defined(CONFIG_TWL4030_WATCHDOG) || \ 112 defined(CONFIG_TWL4030_WATCHDOG_MODULE) 113 #define twl_has_watchdog() true 114 #else 115 #define twl_has_watchdog() false 116 #endif 117 118 #if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\ 119 defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE) 120 #define twl_has_codec() true 121 #else 122 #define twl_has_codec() false 123 #endif 124 125 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE) 126 #define twl_has_bci() true 127 #else 128 #define twl_has_bci() false 129 #endif 130 131 /* Triton Core internal information (BEGIN) */ 132 133 /* Last - for index max*/ 134 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG 135 136 #define TWL_NUM_SLAVES 4 137 138 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ 139 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE) 140 #define twl_has_pwrbutton() true 141 #else 142 #define twl_has_pwrbutton() false 143 #endif 144 145 #define SUB_CHIP_ID0 0 146 #define SUB_CHIP_ID1 1 147 #define SUB_CHIP_ID2 2 148 #define SUB_CHIP_ID3 3 149 150 #define TWL_MODULE_LAST TWL4030_MODULE_LAST 151 152 #define TWL4030_NR_IRQS 8 153 #define TWL6030_NR_IRQS 20 154 155 /* Base Address defns for twl4030_map[] */ 156 157 /* subchip/slave 0 - USB ID */ 158 #define TWL4030_BASEADD_USB 0x0000 159 160 /* subchip/slave 1 - AUD ID */ 161 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 162 #define TWL4030_BASEADD_GPIO 0x0098 163 #define TWL4030_BASEADD_INTBR 0x0085 164 #define TWL4030_BASEADD_PIH 0x0080 165 #define TWL4030_BASEADD_TEST 0x004C 166 167 /* subchip/slave 2 - AUX ID */ 168 #define TWL4030_BASEADD_INTERRUPTS 0x00B9 169 #define TWL4030_BASEADD_LED 0x00EE 170 #define TWL4030_BASEADD_MADC 0x0000 171 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 172 #define TWL4030_BASEADD_PRECHARGE 0x00AA 173 #define TWL4030_BASEADD_PWM0 0x00F8 174 #define TWL4030_BASEADD_PWM1 0x00FB 175 #define TWL4030_BASEADD_PWMA 0x00EF 176 #define TWL4030_BASEADD_PWMB 0x00F1 177 #define TWL4030_BASEADD_KEYPAD 0x00D2 178 179 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ 180 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's 181 one */ 182 183 /* subchip/slave 3 - POWER ID */ 184 #define TWL4030_BASEADD_BACKUP 0x0014 185 #define TWL4030_BASEADD_INT 0x002E 186 #define TWL4030_BASEADD_PM_MASTER 0x0036 187 #define TWL4030_BASEADD_PM_RECEIVER 0x005B 188 #define TWL4030_BASEADD_RTC 0x001C 189 #define TWL4030_BASEADD_SECURED_REG 0x0000 190 191 /* Triton Core internal information (END) */ 192 193 194 /* subchip/slave 0 0x48 - POWER */ 195 #define TWL6030_BASEADD_RTC 0x0000 196 #define TWL6030_BASEADD_MEM 0x0017 197 #define TWL6030_BASEADD_PM_MASTER 0x001F 198 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ 199 #define TWL6030_BASEADD_PM_MISC 0x00E2 200 #define TWL6030_BASEADD_PM_PUPD 0x00F0 201 202 /* subchip/slave 1 0x49 - FEATURE */ 203 #define TWL6030_BASEADD_USB 0x0000 204 #define TWL6030_BASEADD_GPADC_CTRL 0x002E 205 #define TWL6030_BASEADD_AUX 0x0090 206 #define TWL6030_BASEADD_PWM 0x00BA 207 #define TWL6030_BASEADD_GASGAUGE 0x00C0 208 #define TWL6030_BASEADD_PIH 0x00D0 209 #define TWL6030_BASEADD_CHARGER 0x00E0 210 #define TWL6025_BASEADD_CHARGER 0x00DA 211 212 /* subchip/slave 2 0x4A - DFT */ 213 #define TWL6030_BASEADD_DIEID 0x00C0 214 215 /* subchip/slave 3 0x4B - AUDIO */ 216 #define TWL6030_BASEADD_AUDIO 0x0000 217 #define TWL6030_BASEADD_RSV 0x0000 218 #define TWL6030_BASEADD_ZERO 0x0000 219 220 /* Few power values */ 221 #define R_CFG_BOOT 0x05 222 223 /* some fields in R_CFG_BOOT */ 224 #define HFCLK_FREQ_19p2_MHZ (1 << 0) 225 #define HFCLK_FREQ_26_MHZ (2 << 0) 226 #define HFCLK_FREQ_38p4_MHZ (3 << 0) 227 #define HIGH_PERF_SQ (1 << 3) 228 #define CK32K_LOWPWR_EN (1 << 7) 229 230 231 /* chip-specific feature flags, for i2c_device_id.driver_data */ 232 #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ 233 #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ 234 #define TWL5031 BIT(2) /* twl5031 has different registers */ 235 #define TWL6030_CLASS BIT(3) /* TWL6030 class */ 236 237 /*----------------------------------------------------------------------*/ 238 239 /* is driver active, bound to a chip? */ 240 static bool inuse; 241 242 /* TWL IDCODE Register value */ 243 static u32 twl_idcode; 244 245 static unsigned int twl_id; 246 unsigned int twl_rev(void) 247 { 248 return twl_id; 249 } 250 EXPORT_SYMBOL(twl_rev); 251 252 /* Structure for each TWL4030/TWL6030 Slave */ 253 struct twl_client { 254 struct i2c_client *client; 255 u8 address; 256 257 /* max numb of i2c_msg required is for read =2 */ 258 struct i2c_msg xfer_msg[2]; 259 260 /* To lock access to xfer_msg */ 261 struct mutex xfer_lock; 262 }; 263 264 static struct twl_client twl_modules[TWL_NUM_SLAVES]; 265 266 #ifdef CONFIG_IRQ_DOMAIN 267 static struct irq_domain domain; 268 #endif 269 270 /* mapping the module id to slave id and base address */ 271 struct twl_mapping { 272 unsigned char sid; /* Slave ID */ 273 unsigned char base; /* base address */ 274 }; 275 static struct twl_mapping *twl_map; 276 277 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { 278 /* 279 * NOTE: don't change this table without updating the 280 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 281 * so they continue to match the order in this table. 282 */ 283 284 { 0, TWL4030_BASEADD_USB }, 285 286 { 1, TWL4030_BASEADD_AUDIO_VOICE }, 287 { 1, TWL4030_BASEADD_GPIO }, 288 { 1, TWL4030_BASEADD_INTBR }, 289 { 1, TWL4030_BASEADD_PIH }, 290 { 1, TWL4030_BASEADD_TEST }, 291 292 { 2, TWL4030_BASEADD_KEYPAD }, 293 { 2, TWL4030_BASEADD_MADC }, 294 { 2, TWL4030_BASEADD_INTERRUPTS }, 295 { 2, TWL4030_BASEADD_LED }, 296 { 2, TWL4030_BASEADD_MAIN_CHARGE }, 297 { 2, TWL4030_BASEADD_PRECHARGE }, 298 { 2, TWL4030_BASEADD_PWM0 }, 299 { 2, TWL4030_BASEADD_PWM1 }, 300 { 2, TWL4030_BASEADD_PWMA }, 301 { 2, TWL4030_BASEADD_PWMB }, 302 { 2, TWL5031_BASEADD_ACCESSORY }, 303 { 2, TWL5031_BASEADD_INTERRUPTS }, 304 305 { 3, TWL4030_BASEADD_BACKUP }, 306 { 3, TWL4030_BASEADD_INT }, 307 { 3, TWL4030_BASEADD_PM_MASTER }, 308 { 3, TWL4030_BASEADD_PM_RECEIVER }, 309 { 3, TWL4030_BASEADD_RTC }, 310 { 3, TWL4030_BASEADD_SECURED_REG }, 311 }; 312 313 static struct twl_mapping twl6030_map[] = { 314 /* 315 * NOTE: don't change this table without updating the 316 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 317 * so they continue to match the order in this table. 318 */ 319 { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, 320 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO }, 321 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, 322 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 323 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, 324 325 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 326 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 327 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, 328 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 329 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 330 331 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, 332 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, 333 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, 334 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO }, 335 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO }, 336 337 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, 338 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, 339 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 340 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 341 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 342 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, 343 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, 344 345 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, 346 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, 347 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER }, 348 }; 349 350 /*----------------------------------------------------------------------*/ 351 352 /* Exported Functions */ 353 354 /** 355 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 356 * @mod_no: module number 357 * @value: an array of num_bytes+1 containing data to write 358 * @reg: register address (just offset will do) 359 * @num_bytes: number of bytes to transfer 360 * 361 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and 362 * valid data starts at Offset 1. 363 * 364 * Returns the result of operation - 0 is success 365 */ 366 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 367 { 368 int ret; 369 int sid; 370 struct twl_client *twl; 371 struct i2c_msg *msg; 372 373 if (unlikely(mod_no > TWL_MODULE_LAST)) { 374 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 375 return -EPERM; 376 } 377 if (unlikely(!inuse)) { 378 pr_err("%s: not initialized\n", DRIVER_NAME); 379 return -EPERM; 380 } 381 sid = twl_map[mod_no].sid; 382 twl = &twl_modules[sid]; 383 384 mutex_lock(&twl->xfer_lock); 385 /* 386 * [MSG1]: fill the register address data 387 * fill the data Tx buffer 388 */ 389 msg = &twl->xfer_msg[0]; 390 msg->addr = twl->address; 391 msg->len = num_bytes + 1; 392 msg->flags = 0; 393 msg->buf = value; 394 /* over write the first byte of buffer with the register address */ 395 *value = twl_map[mod_no].base + reg; 396 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); 397 mutex_unlock(&twl->xfer_lock); 398 399 /* i2c_transfer returns number of messages transferred */ 400 if (ret != 1) { 401 pr_err("%s: i2c_write failed to transfer all messages\n", 402 DRIVER_NAME); 403 if (ret < 0) 404 return ret; 405 else 406 return -EIO; 407 } else { 408 return 0; 409 } 410 } 411 EXPORT_SYMBOL(twl_i2c_write); 412 413 /** 414 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 415 * @mod_no: module number 416 * @value: an array of num_bytes containing data to be read 417 * @reg: register address (just offset will do) 418 * @num_bytes: number of bytes to transfer 419 * 420 * Returns result of operation - num_bytes is success else failure. 421 */ 422 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 423 { 424 int ret; 425 u8 val; 426 int sid; 427 struct twl_client *twl; 428 struct i2c_msg *msg; 429 430 if (unlikely(mod_no > TWL_MODULE_LAST)) { 431 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 432 return -EPERM; 433 } 434 if (unlikely(!inuse)) { 435 pr_err("%s: not initialized\n", DRIVER_NAME); 436 return -EPERM; 437 } 438 sid = twl_map[mod_no].sid; 439 twl = &twl_modules[sid]; 440 441 mutex_lock(&twl->xfer_lock); 442 /* [MSG1] fill the register address data */ 443 msg = &twl->xfer_msg[0]; 444 msg->addr = twl->address; 445 msg->len = 1; 446 msg->flags = 0; /* Read the register value */ 447 val = twl_map[mod_no].base + reg; 448 msg->buf = &val; 449 /* [MSG2] fill the data rx buffer */ 450 msg = &twl->xfer_msg[1]; 451 msg->addr = twl->address; 452 msg->flags = I2C_M_RD; /* Read the register value */ 453 msg->len = num_bytes; /* only n bytes */ 454 msg->buf = value; 455 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); 456 mutex_unlock(&twl->xfer_lock); 457 458 /* i2c_transfer returns number of messages transferred */ 459 if (ret != 2) { 460 pr_err("%s: i2c_read failed to transfer all messages\n", 461 DRIVER_NAME); 462 if (ret < 0) 463 return ret; 464 else 465 return -EIO; 466 } else { 467 return 0; 468 } 469 } 470 EXPORT_SYMBOL(twl_i2c_read); 471 472 /** 473 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 474 * @mod_no: module number 475 * @value: the value to be written 8 bit 476 * @reg: register address (just offset will do) 477 * 478 * Returns result of operation - 0 is success 479 */ 480 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) 481 { 482 483 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ 484 u8 temp_buffer[2] = { 0 }; 485 /* offset 1 contains the data */ 486 temp_buffer[1] = value; 487 return twl_i2c_write(mod_no, temp_buffer, reg, 1); 488 } 489 EXPORT_SYMBOL(twl_i2c_write_u8); 490 491 /** 492 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 493 * @mod_no: module number 494 * @value: the value read 8 bit 495 * @reg: register address (just offset will do) 496 * 497 * Returns result of operation - 0 is success 498 */ 499 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) 500 { 501 return twl_i2c_read(mod_no, value, reg, 1); 502 } 503 EXPORT_SYMBOL(twl_i2c_read_u8); 504 505 /*----------------------------------------------------------------------*/ 506 507 /** 508 * twl_read_idcode_register - API to read the IDCODE register. 509 * 510 * Unlocks the IDCODE register and read the 32 bit value. 511 */ 512 static int twl_read_idcode_register(void) 513 { 514 int err; 515 516 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, 517 REG_UNLOCK_TEST_REG); 518 if (err) { 519 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); 520 goto fail; 521 } 522 523 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode), 524 REG_IDCODE_7_0, 4); 525 if (err) { 526 pr_err("TWL4030: unable to read IDCODE -%d\n", err); 527 goto fail; 528 } 529 530 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); 531 if (err) 532 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); 533 fail: 534 return err; 535 } 536 537 /** 538 * twl_get_type - API to get TWL Si type. 539 * 540 * Api to get the TWL Si type from IDCODE value. 541 */ 542 int twl_get_type(void) 543 { 544 return TWL_SIL_TYPE(twl_idcode); 545 } 546 EXPORT_SYMBOL_GPL(twl_get_type); 547 548 /** 549 * twl_get_version - API to get TWL Si version. 550 * 551 * Api to get the TWL Si version from IDCODE value. 552 */ 553 int twl_get_version(void) 554 { 555 return TWL_SIL_REV(twl_idcode); 556 } 557 EXPORT_SYMBOL_GPL(twl_get_version); 558 559 static struct device * 560 add_numbered_child(unsigned chip, const char *name, int num, 561 void *pdata, unsigned pdata_len, 562 bool can_wakeup, int irq0, int irq1) 563 { 564 struct platform_device *pdev; 565 struct twl_client *twl = &twl_modules[chip]; 566 int status; 567 568 pdev = platform_device_alloc(name, num); 569 if (!pdev) { 570 dev_dbg(&twl->client->dev, "can't alloc dev\n"); 571 status = -ENOMEM; 572 goto err; 573 } 574 575 device_init_wakeup(&pdev->dev, can_wakeup); 576 pdev->dev.parent = &twl->client->dev; 577 578 if (pdata) { 579 status = platform_device_add_data(pdev, pdata, pdata_len); 580 if (status < 0) { 581 dev_dbg(&pdev->dev, "can't add platform_data\n"); 582 goto err; 583 } 584 } 585 586 if (irq0) { 587 struct resource r[2] = { 588 { .start = irq0, .flags = IORESOURCE_IRQ, }, 589 { .start = irq1, .flags = IORESOURCE_IRQ, }, 590 }; 591 592 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); 593 if (status < 0) { 594 dev_dbg(&pdev->dev, "can't add irqs\n"); 595 goto err; 596 } 597 } 598 599 status = platform_device_add(pdev); 600 601 err: 602 if (status < 0) { 603 platform_device_put(pdev); 604 dev_err(&twl->client->dev, "can't add %s dev\n", name); 605 return ERR_PTR(status); 606 } 607 return &pdev->dev; 608 } 609 610 static inline struct device *add_child(unsigned chip, const char *name, 611 void *pdata, unsigned pdata_len, 612 bool can_wakeup, int irq0, int irq1) 613 { 614 return add_numbered_child(chip, name, -1, pdata, pdata_len, 615 can_wakeup, irq0, irq1); 616 } 617 618 static struct device * 619 add_regulator_linked(int num, struct regulator_init_data *pdata, 620 struct regulator_consumer_supply *consumers, 621 unsigned num_consumers, unsigned long features) 622 { 623 unsigned sub_chip_id; 624 /* regulator framework demands init_data ... */ 625 if (!pdata) 626 return NULL; 627 628 if (consumers) { 629 pdata->consumer_supplies = consumers; 630 pdata->num_consumer_supplies = num_consumers; 631 } 632 633 pdata->driver_data = (void *)features; 634 635 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ 636 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; 637 return add_numbered_child(sub_chip_id, "twl_reg", num, 638 pdata, sizeof(*pdata), false, 0, 0); 639 } 640 641 static struct device * 642 add_regulator(int num, struct regulator_init_data *pdata, 643 unsigned long features) 644 { 645 return add_regulator_linked(num, pdata, NULL, 0, features); 646 } 647 648 /* 649 * NOTE: We know the first 8 IRQs after pdata->base_irq are 650 * for the PIH, and the next are for the PWR_INT SIH, since 651 * that's how twl_init_irq() sets things up. 652 */ 653 654 static int 655 add_children(struct twl4030_platform_data *pdata, unsigned long features) 656 { 657 struct device *child; 658 unsigned sub_chip_id; 659 660 if (twl_has_gpio() && pdata->gpio) { 661 child = add_child(SUB_CHIP_ID1, "twl4030_gpio", 662 pdata->gpio, sizeof(*pdata->gpio), 663 false, pdata->irq_base + GPIO_INTR_OFFSET, 0); 664 if (IS_ERR(child)) 665 return PTR_ERR(child); 666 } 667 668 if (twl_has_keypad() && pdata->keypad) { 669 child = add_child(SUB_CHIP_ID2, "twl4030_keypad", 670 pdata->keypad, sizeof(*pdata->keypad), 671 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); 672 if (IS_ERR(child)) 673 return PTR_ERR(child); 674 } 675 676 if (twl_has_madc() && pdata->madc) { 677 child = add_child(2, "twl4030_madc", 678 pdata->madc, sizeof(*pdata->madc), 679 true, pdata->irq_base + MADC_INTR_OFFSET, 0); 680 if (IS_ERR(child)) 681 return PTR_ERR(child); 682 } 683 684 if (twl_has_rtc()) { 685 /* 686 * REVISIT platform_data here currently might expose the 687 * "msecure" line ... but for now we just expect board 688 * setup to tell the chip "it's always ok to SET_TIME". 689 * Eventually, Linux might become more aware of such 690 * HW security concerns, and "least privilege". 691 */ 692 sub_chip_id = twl_map[TWL_MODULE_RTC].sid; 693 child = add_child(sub_chip_id, "twl_rtc", 694 NULL, 0, 695 true, pdata->irq_base + RTC_INTR_OFFSET, 0); 696 if (IS_ERR(child)) 697 return PTR_ERR(child); 698 } 699 700 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { 701 702 static struct regulator_consumer_supply usb1v5 = { 703 .supply = "usb1v5", 704 }; 705 static struct regulator_consumer_supply usb1v8 = { 706 .supply = "usb1v8", 707 }; 708 static struct regulator_consumer_supply usb3v1 = { 709 .supply = "usb3v1", 710 }; 711 712 /* First add the regulators so that they can be used by transceiver */ 713 if (twl_has_regulator()) { 714 /* this is a template that gets copied */ 715 struct regulator_init_data usb_fixed = { 716 .constraints.valid_modes_mask = 717 REGULATOR_MODE_NORMAL 718 | REGULATOR_MODE_STANDBY, 719 .constraints.valid_ops_mask = 720 REGULATOR_CHANGE_MODE 721 | REGULATOR_CHANGE_STATUS, 722 }; 723 724 child = add_regulator_linked(TWL4030_REG_VUSB1V5, 725 &usb_fixed, &usb1v5, 1, 726 features); 727 if (IS_ERR(child)) 728 return PTR_ERR(child); 729 730 child = add_regulator_linked(TWL4030_REG_VUSB1V8, 731 &usb_fixed, &usb1v8, 1, 732 features); 733 if (IS_ERR(child)) 734 return PTR_ERR(child); 735 736 child = add_regulator_linked(TWL4030_REG_VUSB3V1, 737 &usb_fixed, &usb3v1, 1, 738 features); 739 if (IS_ERR(child)) 740 return PTR_ERR(child); 741 742 } 743 744 child = add_child(0, "twl4030_usb", 745 pdata->usb, sizeof(*pdata->usb), 746 true, 747 /* irq0 = USB_PRES, irq1 = USB */ 748 pdata->irq_base + USB_PRES_INTR_OFFSET, 749 pdata->irq_base + USB_INTR_OFFSET); 750 751 if (IS_ERR(child)) 752 return PTR_ERR(child); 753 754 /* we need to connect regulators to this transceiver */ 755 if (twl_has_regulator() && child) { 756 usb1v5.dev = child; 757 usb1v8.dev = child; 758 usb3v1.dev = child; 759 } 760 } 761 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) { 762 763 static struct regulator_consumer_supply usb3v3; 764 int regulator; 765 766 if (twl_has_regulator()) { 767 /* this is a template that gets copied */ 768 struct regulator_init_data usb_fixed = { 769 .constraints.valid_modes_mask = 770 REGULATOR_MODE_NORMAL 771 | REGULATOR_MODE_STANDBY, 772 .constraints.valid_ops_mask = 773 REGULATOR_CHANGE_MODE 774 | REGULATOR_CHANGE_STATUS, 775 }; 776 777 if (features & TWL6025_SUBCLASS) { 778 usb3v3.supply = "ldousb"; 779 regulator = TWL6025_REG_LDOUSB; 780 } else { 781 usb3v3.supply = "vusb"; 782 regulator = TWL6030_REG_VUSB; 783 } 784 child = add_regulator_linked(regulator, &usb_fixed, 785 &usb3v3, 1, 786 features); 787 if (IS_ERR(child)) 788 return PTR_ERR(child); 789 } 790 791 pdata->usb->features = features; 792 793 child = add_child(0, "twl6030_usb", 794 pdata->usb, sizeof(*pdata->usb), 795 true, 796 /* irq1 = VBUS_PRES, irq0 = USB ID */ 797 pdata->irq_base + USBOTG_INTR_OFFSET, 798 pdata->irq_base + USB_PRES_INTR_OFFSET); 799 800 if (IS_ERR(child)) 801 return PTR_ERR(child); 802 /* we need to connect regulators to this transceiver */ 803 if (twl_has_regulator() && child) 804 usb3v3.dev = child; 805 } else if (twl_has_regulator() && twl_class_is_6030()) { 806 if (features & TWL6025_SUBCLASS) 807 child = add_regulator(TWL6025_REG_LDOUSB, 808 pdata->ldousb, features); 809 else 810 child = add_regulator(TWL6030_REG_VUSB, 811 pdata->vusb, features); 812 813 if (IS_ERR(child)) 814 return PTR_ERR(child); 815 } 816 817 if (twl_has_watchdog() && twl_class_is_4030()) { 818 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); 819 if (IS_ERR(child)) 820 return PTR_ERR(child); 821 } 822 823 if (twl_has_pwrbutton() && twl_class_is_4030()) { 824 child = add_child(1, "twl4030_pwrbutton", 825 NULL, 0, true, pdata->irq_base + 8 + 0, 0); 826 if (IS_ERR(child)) 827 return PTR_ERR(child); 828 } 829 830 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) { 831 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 832 child = add_child(sub_chip_id, "twl4030-audio", 833 pdata->audio, sizeof(*pdata->audio), 834 false, 0, 0); 835 if (IS_ERR(child)) 836 return PTR_ERR(child); 837 } 838 839 if (twl_has_codec() && pdata->audio && twl_class_is_6030()) { 840 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 841 child = add_child(sub_chip_id, "twl6040", 842 pdata->audio, sizeof(*pdata->audio), 843 false, 0, 0); 844 if (IS_ERR(child)) 845 return PTR_ERR(child); 846 } 847 848 /* twl4030 regulators */ 849 if (twl_has_regulator() && twl_class_is_4030()) { 850 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, 851 features); 852 if (IS_ERR(child)) 853 return PTR_ERR(child); 854 855 child = add_regulator(TWL4030_REG_VIO, pdata->vio, 856 features); 857 if (IS_ERR(child)) 858 return PTR_ERR(child); 859 860 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, 861 features); 862 if (IS_ERR(child)) 863 return PTR_ERR(child); 864 865 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, 866 features); 867 if (IS_ERR(child)) 868 return PTR_ERR(child); 869 870 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, 871 features); 872 if (IS_ERR(child)) 873 return PTR_ERR(child); 874 875 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, 876 features); 877 if (IS_ERR(child)) 878 return PTR_ERR(child); 879 880 child = add_regulator((features & TWL4030_VAUX2) 881 ? TWL4030_REG_VAUX2_4030 882 : TWL4030_REG_VAUX2, 883 pdata->vaux2, features); 884 if (IS_ERR(child)) 885 return PTR_ERR(child); 886 887 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, 888 features); 889 if (IS_ERR(child)) 890 return PTR_ERR(child); 891 892 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, 893 features); 894 if (IS_ERR(child)) 895 return PTR_ERR(child); 896 897 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, 898 features); 899 if (IS_ERR(child)) 900 return PTR_ERR(child); 901 } 902 903 /* maybe add LDOs that are omitted on cost-reduced parts */ 904 if (twl_has_regulator() && !(features & TPS_SUBSET) 905 && twl_class_is_4030()) { 906 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, 907 features); 908 if (IS_ERR(child)) 909 return PTR_ERR(child); 910 911 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, 912 features); 913 if (IS_ERR(child)) 914 return PTR_ERR(child); 915 916 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, 917 features); 918 if (IS_ERR(child)) 919 return PTR_ERR(child); 920 921 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, 922 features); 923 if (IS_ERR(child)) 924 return PTR_ERR(child); 925 926 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, 927 features); 928 if (IS_ERR(child)) 929 return PTR_ERR(child); 930 931 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, 932 features); 933 if (IS_ERR(child)) 934 return PTR_ERR(child); 935 } 936 937 /* twl6030 regulators */ 938 if (twl_has_regulator() && twl_class_is_6030() && 939 !(features & TWL6025_SUBCLASS)) { 940 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc, 941 features); 942 if (IS_ERR(child)) 943 return PTR_ERR(child); 944 945 child = add_regulator(TWL6030_REG_VPP, pdata->vpp, 946 features); 947 if (IS_ERR(child)) 948 return PTR_ERR(child); 949 950 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim, 951 features); 952 if (IS_ERR(child)) 953 return PTR_ERR(child); 954 955 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio, 956 features); 957 if (IS_ERR(child)) 958 return PTR_ERR(child); 959 960 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac, 961 features); 962 if (IS_ERR(child)) 963 return PTR_ERR(child); 964 965 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1, 966 features); 967 if (IS_ERR(child)) 968 return PTR_ERR(child); 969 970 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2, 971 features); 972 if (IS_ERR(child)) 973 return PTR_ERR(child); 974 975 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3, 976 features); 977 if (IS_ERR(child)) 978 return PTR_ERR(child); 979 980 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg, 981 features); 982 if (IS_ERR(child)) 983 return PTR_ERR(child); 984 } 985 986 /* 6030 and 6025 share this regulator */ 987 if (twl_has_regulator() && twl_class_is_6030()) { 988 child = add_regulator(TWL6030_REG_VANA, pdata->vana, 989 features); 990 if (IS_ERR(child)) 991 return PTR_ERR(child); 992 } 993 994 /* twl6025 regulators */ 995 if (twl_has_regulator() && twl_class_is_6030() && 996 (features & TWL6025_SUBCLASS)) { 997 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5, 998 features); 999 if (IS_ERR(child)) 1000 return PTR_ERR(child); 1001 1002 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1, 1003 features); 1004 if (IS_ERR(child)) 1005 return PTR_ERR(child); 1006 1007 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7, 1008 features); 1009 if (IS_ERR(child)) 1010 return PTR_ERR(child); 1011 1012 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6, 1013 features); 1014 if (IS_ERR(child)) 1015 return PTR_ERR(child); 1016 1017 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln, 1018 features); 1019 if (IS_ERR(child)) 1020 return PTR_ERR(child); 1021 1022 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2, 1023 features); 1024 if (IS_ERR(child)) 1025 return PTR_ERR(child); 1026 1027 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4, 1028 features); 1029 if (IS_ERR(child)) 1030 return PTR_ERR(child); 1031 1032 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3, 1033 features); 1034 if (IS_ERR(child)) 1035 return PTR_ERR(child); 1036 1037 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3, 1038 features); 1039 if (IS_ERR(child)) 1040 return PTR_ERR(child); 1041 1042 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4, 1043 features); 1044 if (IS_ERR(child)) 1045 return PTR_ERR(child); 1046 1047 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025, 1048 features); 1049 if (IS_ERR(child)) 1050 return PTR_ERR(child); 1051 1052 } 1053 1054 if (twl_has_bci() && pdata->bci && 1055 !(features & (TPS_SUBSET | TWL5031))) { 1056 child = add_child(3, "twl4030_bci", 1057 pdata->bci, sizeof(*pdata->bci), false, 1058 /* irq0 = CHG_PRES, irq1 = BCI */ 1059 pdata->irq_base + BCI_PRES_INTR_OFFSET, 1060 pdata->irq_base + BCI_INTR_OFFSET); 1061 if (IS_ERR(child)) 1062 return PTR_ERR(child); 1063 } 1064 1065 return 0; 1066 } 1067 1068 /*----------------------------------------------------------------------*/ 1069 1070 /* 1071 * These three functions initialize the on-chip clock framework, 1072 * letting it generate the right frequencies for USB, MADC, and 1073 * other purposes. 1074 */ 1075 static inline int __init protect_pm_master(void) 1076 { 1077 int e = 0; 1078 1079 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, 1080 TWL4030_PM_MASTER_PROTECT_KEY); 1081 return e; 1082 } 1083 1084 static inline int __init unprotect_pm_master(void) 1085 { 1086 int e = 0; 1087 1088 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 1089 TWL4030_PM_MASTER_KEY_CFG1, 1090 TWL4030_PM_MASTER_PROTECT_KEY); 1091 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 1092 TWL4030_PM_MASTER_KEY_CFG2, 1093 TWL4030_PM_MASTER_PROTECT_KEY); 1094 1095 return e; 1096 } 1097 1098 static void clocks_init(struct device *dev, 1099 struct twl4030_clock_init_data *clock) 1100 { 1101 int e = 0; 1102 struct clk *osc; 1103 u32 rate; 1104 u8 ctrl = HFCLK_FREQ_26_MHZ; 1105 1106 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) 1107 if (cpu_is_omap2430()) 1108 osc = clk_get(dev, "osc_ck"); 1109 else 1110 osc = clk_get(dev, "osc_sys_ck"); 1111 1112 if (IS_ERR(osc)) { 1113 printk(KERN_WARNING "Skipping twl internal clock init and " 1114 "using bootloader value (unknown osc rate)\n"); 1115 return; 1116 } 1117 1118 rate = clk_get_rate(osc); 1119 clk_put(osc); 1120 1121 #else 1122 /* REVISIT for non-OMAP systems, pass the clock rate from 1123 * board init code, using platform_data. 1124 */ 1125 osc = ERR_PTR(-EIO); 1126 1127 printk(KERN_WARNING "Skipping twl internal clock init and " 1128 "using bootloader value (unknown osc rate)\n"); 1129 1130 return; 1131 #endif 1132 1133 switch (rate) { 1134 case 19200000: 1135 ctrl = HFCLK_FREQ_19p2_MHZ; 1136 break; 1137 case 26000000: 1138 ctrl = HFCLK_FREQ_26_MHZ; 1139 break; 1140 case 38400000: 1141 ctrl = HFCLK_FREQ_38p4_MHZ; 1142 break; 1143 } 1144 1145 ctrl |= HIGH_PERF_SQ; 1146 if (clock && clock->ck32k_lowpwr_enable) 1147 ctrl |= CK32K_LOWPWR_EN; 1148 1149 e |= unprotect_pm_master(); 1150 /* effect->MADC+USB ck en */ 1151 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); 1152 e |= protect_pm_master(); 1153 1154 if (e < 0) 1155 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); 1156 } 1157 1158 /*----------------------------------------------------------------------*/ 1159 1160 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); 1161 int twl4030_exit_irq(void); 1162 int twl4030_init_chip_irq(const char *chip); 1163 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); 1164 int twl6030_exit_irq(void); 1165 1166 static int twl_remove(struct i2c_client *client) 1167 { 1168 unsigned i; 1169 int status; 1170 1171 if (twl_class_is_4030()) 1172 status = twl4030_exit_irq(); 1173 else 1174 status = twl6030_exit_irq(); 1175 1176 if (status < 0) 1177 return status; 1178 1179 for (i = 0; i < TWL_NUM_SLAVES; i++) { 1180 struct twl_client *twl = &twl_modules[i]; 1181 1182 if (twl->client && twl->client != client) 1183 i2c_unregister_device(twl->client); 1184 twl_modules[i].client = NULL; 1185 } 1186 inuse = false; 1187 return 0; 1188 } 1189 1190 /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ 1191 static int __devinit 1192 twl_probe(struct i2c_client *client, const struct i2c_device_id *id) 1193 { 1194 int status; 1195 unsigned i; 1196 struct twl4030_platform_data *pdata = client->dev.platform_data; 1197 struct device_node *node = client->dev.of_node; 1198 u8 temp; 1199 int ret = 0; 1200 int nr_irqs = TWL4030_NR_IRQS; 1201 1202 if ((id->driver_data) & TWL6030_CLASS) 1203 nr_irqs = TWL6030_NR_IRQS; 1204 1205 if (node && !pdata) { 1206 /* 1207 * XXX: Temporary pdata until the information is correctly 1208 * retrieved by every TWL modules from DT. 1209 */ 1210 pdata = devm_kzalloc(&client->dev, 1211 sizeof(struct twl4030_platform_data), 1212 GFP_KERNEL); 1213 if (!pdata) 1214 return -ENOMEM; 1215 } 1216 1217 if (!pdata) { 1218 dev_dbg(&client->dev, "no platform data?\n"); 1219 return -EINVAL; 1220 } 1221 1222 status = irq_alloc_descs(-1, pdata->irq_base, nr_irqs, 0); 1223 if (IS_ERR_VALUE(status)) { 1224 dev_err(&client->dev, "Fail to allocate IRQ descs\n"); 1225 return status; 1226 } 1227 1228 pdata->irq_base = status; 1229 pdata->irq_end = pdata->irq_base + nr_irqs; 1230 1231 #ifdef CONFIG_IRQ_DOMAIN 1232 domain.irq_base = pdata->irq_base; 1233 domain.nr_irq = nr_irqs; 1234 domain.of_node = of_node_get(node); 1235 domain.ops = &irq_domain_simple_ops; 1236 irq_domain_add(&domain); 1237 #endif 1238 1239 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { 1240 dev_dbg(&client->dev, "can't talk I2C?\n"); 1241 return -EIO; 1242 } 1243 1244 if (inuse) { 1245 dev_dbg(&client->dev, "driver is already in use\n"); 1246 return -EBUSY; 1247 } 1248 1249 for (i = 0; i < TWL_NUM_SLAVES; i++) { 1250 struct twl_client *twl = &twl_modules[i]; 1251 1252 twl->address = client->addr + i; 1253 if (i == 0) 1254 twl->client = client; 1255 else { 1256 twl->client = i2c_new_dummy(client->adapter, 1257 twl->address); 1258 if (!twl->client) { 1259 dev_err(&client->dev, 1260 "can't attach client %d\n", i); 1261 status = -ENOMEM; 1262 goto fail; 1263 } 1264 } 1265 mutex_init(&twl->xfer_lock); 1266 } 1267 inuse = true; 1268 if ((id->driver_data) & TWL6030_CLASS) { 1269 twl_id = TWL6030_CLASS_ID; 1270 twl_map = &twl6030_map[0]; 1271 } else { 1272 twl_id = TWL4030_CLASS_ID; 1273 twl_map = &twl4030_map[0]; 1274 } 1275 1276 /* setup clock framework */ 1277 clocks_init(&client->dev, pdata->clock); 1278 1279 /* read TWL IDCODE Register */ 1280 if (twl_id == TWL4030_CLASS_ID) { 1281 ret = twl_read_idcode_register(); 1282 WARN(ret < 0, "Error: reading twl_idcode register value\n"); 1283 } 1284 1285 /* load power event scripts */ 1286 if (twl_has_power() && pdata->power) 1287 twl4030_power_init(pdata->power); 1288 1289 /* Maybe init the T2 Interrupt subsystem */ 1290 if (client->irq 1291 && pdata->irq_base 1292 && pdata->irq_end > pdata->irq_base) { 1293 if (twl_class_is_4030()) { 1294 twl4030_init_chip_irq(id->name); 1295 status = twl4030_init_irq(client->irq, pdata->irq_base, 1296 pdata->irq_end); 1297 } else { 1298 status = twl6030_init_irq(client->irq, pdata->irq_base, 1299 pdata->irq_end); 1300 } 1301 1302 if (status < 0) 1303 goto fail; 1304 } 1305 1306 /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. 1307 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, 1308 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. 1309 */ 1310 1311 if (twl_class_is_4030()) { 1312 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); 1313 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ 1314 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); 1315 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); 1316 } 1317 1318 #ifdef CONFIG_OF_DEVICE 1319 if (node) 1320 status = of_platform_populate(node, NULL, NULL, &client->dev); 1321 else 1322 #endif 1323 status = add_children(pdata, id->driver_data); 1324 1325 fail: 1326 if (status < 0) 1327 twl_remove(client); 1328 return status; 1329 } 1330 1331 static const struct i2c_device_id twl_ids[] = { 1332 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ 1333 { "twl5030", 0 }, /* T2 updated */ 1334 { "twl5031", TWL5031 }, /* TWL5030 updated */ 1335 { "tps65950", 0 }, /* catalog version of twl5030 */ 1336 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ 1337 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ 1338 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED 1339 and vibrator. Charger in USB module*/ 1340 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ 1341 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */ 1342 { /* end of list */ }, 1343 }; 1344 MODULE_DEVICE_TABLE(i2c, twl_ids); 1345 1346 /* One Client Driver , 4 Clients */ 1347 static struct i2c_driver twl_driver = { 1348 .driver.name = DRIVER_NAME, 1349 .id_table = twl_ids, 1350 .probe = twl_probe, 1351 .remove = twl_remove, 1352 }; 1353 1354 static int __init twl_init(void) 1355 { 1356 return i2c_add_driver(&twl_driver); 1357 } 1358 subsys_initcall(twl_init); 1359 1360 static void __exit twl_exit(void) 1361 { 1362 i2c_del_driver(&twl_driver); 1363 } 1364 module_exit(twl_exit); 1365 1366 MODULE_AUTHOR("Texas Instruments, Inc."); 1367 MODULE_DESCRIPTION("I2C Core interface for TWL"); 1368 MODULE_LICENSE("GPL"); 1369