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/clk.h> 35#include <linux/err.h> 36 37#include <linux/regulator/machine.h> 38 39#include <linux/i2c.h> 40#include <linux/i2c/twl.h> 41 42#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) 43#include <plat/cpu.h> 44#endif 45 46 47#define DRIVER_NAME "twl" 48 49#if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) 50#define twl_has_keypad() true 51#else 52#define twl_has_keypad() false 53#endif 54 55#if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) 56#define twl_has_gpio() true 57#else 58#define twl_has_gpio() false 59#endif 60 61#if defined(CONFIG_REGULATOR_TWL4030) || defined(CONFIG_REGULATOR_TWL4030_MODULE) 62#define twl_has_regulator() true 63#else 64#define twl_has_regulator() false 65#endif 66 67#if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) 68#define twl_has_madc() true 69#else 70#define twl_has_madc() false 71#endif 72 73#ifdef CONFIG_TWL4030_POWER 74#define twl_has_power() true 75#else 76#define twl_has_power() false 77#endif 78 79#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) 80#define twl_has_rtc() true 81#else 82#define twl_has_rtc() false 83#endif 84 85#if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) 86#define twl_has_usb() true 87#else 88#define twl_has_usb() false 89#endif 90 91#if defined(CONFIG_TWL4030_WATCHDOG) || defined(CONFIG_TWL4030_WATCHDOG_MODULE) 92#define twl_has_watchdog() true 93#else 94#define twl_has_watchdog() false 95#endif 96 97#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) || \ 98 defined(CONFIG_SND_SOC_TWL6040) || defined(CONFIG_SND_SOC_TWL6040_MODULE) 99#define twl_has_codec() true 100#else 101#define twl_has_codec() false 102#endif 103 104/* Triton Core internal information (BEGIN) */ 105 106/* Last - for index max*/ 107#define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG 108 109#define TWL_NUM_SLAVES 4 110 111#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) || \ 112 defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE) 113#define twl_has_pwrbutton() true 114#else 115#define twl_has_pwrbutton() false 116#endif 117 118#define SUB_CHIP_ID0 0 119#define SUB_CHIP_ID1 1 120#define SUB_CHIP_ID2 2 121#define SUB_CHIP_ID3 3 122 123#define TWL_MODULE_LAST TWL4030_MODULE_LAST 124 125/* Base Address defns for twl4030_map[] */ 126 127/* subchip/slave 0 - USB ID */ 128#define TWL4030_BASEADD_USB 0x0000 129 130/* subchip/slave 1 - AUD ID */ 131#define TWL4030_BASEADD_AUDIO_VOICE 0x0000 132#define TWL4030_BASEADD_GPIO 0x0098 133#define TWL4030_BASEADD_INTBR 0x0085 134#define TWL4030_BASEADD_PIH 0x0080 135#define TWL4030_BASEADD_TEST 0x004C 136 137/* subchip/slave 2 - AUX ID */ 138#define TWL4030_BASEADD_INTERRUPTS 0x00B9 139#define TWL4030_BASEADD_LED 0x00EE 140#define TWL4030_BASEADD_MADC 0x0000 141#define TWL4030_BASEADD_MAIN_CHARGE 0x0074 142#define TWL4030_BASEADD_PRECHARGE 0x00AA 143#define TWL4030_BASEADD_PWM0 0x00F8 144#define TWL4030_BASEADD_PWM1 0x00FB 145#define TWL4030_BASEADD_PWMA 0x00EF 146#define TWL4030_BASEADD_PWMB 0x00F1 147#define TWL4030_BASEADD_KEYPAD 0x00D2 148 149#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ 150#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's 151 one */ 152 153/* subchip/slave 3 - POWER ID */ 154#define TWL4030_BASEADD_BACKUP 0x0014 155#define TWL4030_BASEADD_INT 0x002E 156#define TWL4030_BASEADD_PM_MASTER 0x0036 157#define TWL4030_BASEADD_PM_RECEIVER 0x005B 158#define TWL4030_BASEADD_RTC 0x001C 159#define TWL4030_BASEADD_SECURED_REG 0x0000 160 161/* Triton Core internal information (END) */ 162 163 164/* subchip/slave 0 0x48 - POWER */ 165#define TWL6030_BASEADD_RTC 0x0000 166#define TWL6030_BASEADD_MEM 0x0017 167#define TWL6030_BASEADD_PM_MASTER 0x001F 168#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ 169#define TWL6030_BASEADD_PM_MISC 0x00E2 170#define TWL6030_BASEADD_PM_PUPD 0x00F0 171 172/* subchip/slave 1 0x49 - FEATURE */ 173#define TWL6030_BASEADD_USB 0x0000 174#define TWL6030_BASEADD_GPADC_CTRL 0x002E 175#define TWL6030_BASEADD_AUX 0x0090 176#define TWL6030_BASEADD_PWM 0x00BA 177#define TWL6030_BASEADD_GASGAUGE 0x00C0 178#define TWL6030_BASEADD_PIH 0x00D0 179#define TWL6030_BASEADD_CHARGER 0x00E0 180 181/* subchip/slave 2 0x4A - DFT */ 182#define TWL6030_BASEADD_DIEID 0x00C0 183 184/* subchip/slave 3 0x4B - AUDIO */ 185#define TWL6030_BASEADD_AUDIO 0x0000 186#define TWL6030_BASEADD_RSV 0x0000 187#define TWL6030_BASEADD_ZERO 0x0000 188 189/* Few power values */ 190#define R_CFG_BOOT 0x05 191#define R_PROTECT_KEY 0x0E 192 193/* access control values for R_PROTECT_KEY */ 194#define KEY_UNLOCK1 0xce 195#define KEY_UNLOCK2 0xec 196#define KEY_LOCK 0x00 197 198/* some fields in R_CFG_BOOT */ 199#define HFCLK_FREQ_19p2_MHZ (1 << 0) 200#define HFCLK_FREQ_26_MHZ (2 << 0) 201#define HFCLK_FREQ_38p4_MHZ (3 << 0) 202#define HIGH_PERF_SQ (1 << 3) 203#define CK32K_LOWPWR_EN (1 << 7) 204 205 206/* chip-specific feature flags, for i2c_device_id.driver_data */ 207#define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ 208#define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ 209#define TWL5031 BIT(2) /* twl5031 has different registers */ 210#define TWL6030_CLASS BIT(3) /* TWL6030 class */ 211 212/*----------------------------------------------------------------------*/ 213 214/* is driver active, bound to a chip? */ 215static bool inuse; 216 217static unsigned int twl_id; 218unsigned int twl_rev(void) 219{ 220 return twl_id; 221} 222EXPORT_SYMBOL(twl_rev); 223 224/* Structure for each TWL4030/TWL6030 Slave */ 225struct twl_client { 226 struct i2c_client *client; 227 u8 address; 228 229 /* max numb of i2c_msg required is for read =2 */ 230 struct i2c_msg xfer_msg[2]; 231 232 /* To lock access to xfer_msg */ 233 struct mutex xfer_lock; 234}; 235 236static struct twl_client twl_modules[TWL_NUM_SLAVES]; 237 238 239/* mapping the module id to slave id and base address */ 240struct twl_mapping { 241 unsigned char sid; /* Slave ID */ 242 unsigned char base; /* base address */ 243}; 244struct twl_mapping *twl_map; 245 246static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { 247 /* 248 * NOTE: don't change this table without updating the 249 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 250 * so they continue to match the order in this table. 251 */ 252 253 { 0, TWL4030_BASEADD_USB }, 254 255 { 1, TWL4030_BASEADD_AUDIO_VOICE }, 256 { 1, TWL4030_BASEADD_GPIO }, 257 { 1, TWL4030_BASEADD_INTBR }, 258 { 1, TWL4030_BASEADD_PIH }, 259 { 1, TWL4030_BASEADD_TEST }, 260 261 { 2, TWL4030_BASEADD_KEYPAD }, 262 { 2, TWL4030_BASEADD_MADC }, 263 { 2, TWL4030_BASEADD_INTERRUPTS }, 264 { 2, TWL4030_BASEADD_LED }, 265 { 2, TWL4030_BASEADD_MAIN_CHARGE }, 266 { 2, TWL4030_BASEADD_PRECHARGE }, 267 { 2, TWL4030_BASEADD_PWM0 }, 268 { 2, TWL4030_BASEADD_PWM1 }, 269 { 2, TWL4030_BASEADD_PWMA }, 270 { 2, TWL4030_BASEADD_PWMB }, 271 { 2, TWL5031_BASEADD_ACCESSORY }, 272 { 2, TWL5031_BASEADD_INTERRUPTS }, 273 274 { 3, TWL4030_BASEADD_BACKUP }, 275 { 3, TWL4030_BASEADD_INT }, 276 { 3, TWL4030_BASEADD_PM_MASTER }, 277 { 3, TWL4030_BASEADD_PM_RECEIVER }, 278 { 3, TWL4030_BASEADD_RTC }, 279 { 3, TWL4030_BASEADD_SECURED_REG }, 280}; 281 282static struct twl_mapping twl6030_map[] = { 283 /* 284 * NOTE: don't change this table without updating the 285 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 286 * so they continue to match the order in this table. 287 */ 288 { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, 289 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO }, 290 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, 291 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 292 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, 293 294 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 295 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 296 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, 297 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 298 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 299 300 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, 301 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, 302 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, 303 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO }, 304 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO }, 305 306 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, 307 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, 308 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 309 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 310 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 311 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, 312 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, 313 314 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, 315 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, 316}; 317 318/*----------------------------------------------------------------------*/ 319 320/* Exported Functions */ 321 322/** 323 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 324 * @mod_no: module number 325 * @value: an array of num_bytes+1 containing data to write 326 * @reg: register address (just offset will do) 327 * @num_bytes: number of bytes to transfer 328 * 329 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and 330 * valid data starts at Offset 1. 331 * 332 * Returns the result of operation - 0 is success 333 */ 334int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 335{ 336 int ret; 337 int sid; 338 struct twl_client *twl; 339 struct i2c_msg *msg; 340 341 if (unlikely(mod_no > TWL_MODULE_LAST)) { 342 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 343 return -EPERM; 344 } 345 sid = twl_map[mod_no].sid; 346 twl = &twl_modules[sid]; 347 348 if (unlikely(!inuse)) { 349 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); 350 return -EPERM; 351 } 352 mutex_lock(&twl->xfer_lock); 353 /* 354 * [MSG1]: fill the register address data 355 * fill the data Tx buffer 356 */ 357 msg = &twl->xfer_msg[0]; 358 msg->addr = twl->address; 359 msg->len = num_bytes + 1; 360 msg->flags = 0; 361 msg->buf = value; 362 /* over write the first byte of buffer with the register address */ 363 *value = twl_map[mod_no].base + reg; 364 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); 365 mutex_unlock(&twl->xfer_lock); 366 367 /* i2c_transfer returns number of messages transferred */ 368 if (ret != 1) { 369 pr_err("%s: i2c_write failed to transfer all messages\n", 370 DRIVER_NAME); 371 if (ret < 0) 372 return ret; 373 else 374 return -EIO; 375 } else { 376 return 0; 377 } 378} 379EXPORT_SYMBOL(twl_i2c_write); 380 381/** 382 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 383 * @mod_no: module number 384 * @value: an array of num_bytes containing data to be read 385 * @reg: register address (just offset will do) 386 * @num_bytes: number of bytes to transfer 387 * 388 * Returns result of operation - num_bytes is success else failure. 389 */ 390int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 391{ 392 int ret; 393 u8 val; 394 int sid; 395 struct twl_client *twl; 396 struct i2c_msg *msg; 397 398 if (unlikely(mod_no > TWL_MODULE_LAST)) { 399 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 400 return -EPERM; 401 } 402 sid = twl_map[mod_no].sid; 403 twl = &twl_modules[sid]; 404 405 if (unlikely(!inuse)) { 406 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); 407 return -EPERM; 408 } 409 mutex_lock(&twl->xfer_lock); 410 /* [MSG1] fill the register address data */ 411 msg = &twl->xfer_msg[0]; 412 msg->addr = twl->address; 413 msg->len = 1; 414 msg->flags = 0; /* Read the register value */ 415 val = twl_map[mod_no].base + reg; 416 msg->buf = &val; 417 /* [MSG2] fill the data rx buffer */ 418 msg = &twl->xfer_msg[1]; 419 msg->addr = twl->address; 420 msg->flags = I2C_M_RD; /* Read the register value */ 421 msg->len = num_bytes; /* only n bytes */ 422 msg->buf = value; 423 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); 424 mutex_unlock(&twl->xfer_lock); 425 426 /* i2c_transfer returns number of messages transferred */ 427 if (ret != 2) { 428 pr_err("%s: i2c_read failed to transfer all messages\n", 429 DRIVER_NAME); 430 if (ret < 0) 431 return ret; 432 else 433 return -EIO; 434 } else { 435 return 0; 436 } 437} 438EXPORT_SYMBOL(twl_i2c_read); 439 440/** 441 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 442 * @mod_no: module number 443 * @value: the value to be written 8 bit 444 * @reg: register address (just offset will do) 445 * 446 * Returns result of operation - 0 is success 447 */ 448int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) 449{ 450 451 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ 452 u8 temp_buffer[2] = { 0 }; 453 /* offset 1 contains the data */ 454 temp_buffer[1] = value; 455 return twl_i2c_write(mod_no, temp_buffer, reg, 1); 456} 457EXPORT_SYMBOL(twl_i2c_write_u8); 458 459/** 460 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 461 * @mod_no: module number 462 * @value: the value read 8 bit 463 * @reg: register address (just offset will do) 464 * 465 * Returns result of operation - 0 is success 466 */ 467int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) 468{ 469 return twl_i2c_read(mod_no, value, reg, 1); 470} 471EXPORT_SYMBOL(twl_i2c_read_u8); 472 473/*----------------------------------------------------------------------*/ 474 475static struct device * 476add_numbered_child(unsigned chip, const char *name, int num, 477 void *pdata, unsigned pdata_len, 478 bool can_wakeup, int irq0, int irq1) 479{ 480 struct platform_device *pdev; 481 struct twl_client *twl = &twl_modules[chip]; 482 int status; 483 484 pdev = platform_device_alloc(name, num); 485 if (!pdev) { 486 dev_dbg(&twl->client->dev, "can't alloc dev\n"); 487 status = -ENOMEM; 488 goto err; 489 } 490 491 device_init_wakeup(&pdev->dev, can_wakeup); 492 pdev->dev.parent = &twl->client->dev; 493 494 if (pdata) { 495 status = platform_device_add_data(pdev, pdata, pdata_len); 496 if (status < 0) { 497 dev_dbg(&pdev->dev, "can't add platform_data\n"); 498 goto err; 499 } 500 } 501 502 if (irq0) { 503 struct resource r[2] = { 504 { .start = irq0, .flags = IORESOURCE_IRQ, }, 505 { .start = irq1, .flags = IORESOURCE_IRQ, }, 506 }; 507 508 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); 509 if (status < 0) { 510 dev_dbg(&pdev->dev, "can't add irqs\n"); 511 goto err; 512 } 513 } 514 515 status = platform_device_add(pdev); 516 517err: 518 if (status < 0) { 519 platform_device_put(pdev); 520 dev_err(&twl->client->dev, "can't add %s dev\n", name); 521 return ERR_PTR(status); 522 } 523 return &pdev->dev; 524} 525 526static inline struct device *add_child(unsigned chip, const char *name, 527 void *pdata, unsigned pdata_len, 528 bool can_wakeup, int irq0, int irq1) 529{ 530 return add_numbered_child(chip, name, -1, pdata, pdata_len, 531 can_wakeup, irq0, irq1); 532} 533 534static struct device * 535add_regulator_linked(int num, struct regulator_init_data *pdata, 536 struct regulator_consumer_supply *consumers, 537 unsigned num_consumers) 538{ 539 unsigned sub_chip_id; 540 /* regulator framework demands init_data ... */ 541 if (!pdata) 542 return NULL; 543 544 if (consumers) { 545 pdata->consumer_supplies = consumers; 546 pdata->num_consumer_supplies = num_consumers; 547 } 548 549 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ 550 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; 551 return add_numbered_child(sub_chip_id, "twl_reg", num, 552 pdata, sizeof(*pdata), false, 0, 0); 553} 554 555static struct device * 556add_regulator(int num, struct regulator_init_data *pdata) 557{ 558 return add_regulator_linked(num, pdata, NULL, 0); 559} 560 561/* 562 * NOTE: We know the first 8 IRQs after pdata->base_irq are 563 * for the PIH, and the next are for the PWR_INT SIH, since 564 * that's how twl_init_irq() sets things up. 565 */ 566 567static int 568add_children(struct twl4030_platform_data *pdata, unsigned long features) 569{ 570 struct device *child; 571 unsigned sub_chip_id; 572 573 if (twl_has_gpio() && pdata->gpio) { 574 child = add_child(SUB_CHIP_ID1, "twl4030_gpio", 575 pdata->gpio, sizeof(*pdata->gpio), 576 false, pdata->irq_base + GPIO_INTR_OFFSET, 0); 577 if (IS_ERR(child)) 578 return PTR_ERR(child); 579 } 580 581 if (twl_has_keypad() && pdata->keypad) { 582 child = add_child(SUB_CHIP_ID2, "twl4030_keypad", 583 pdata->keypad, sizeof(*pdata->keypad), 584 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); 585 if (IS_ERR(child)) 586 return PTR_ERR(child); 587 } 588 589 if (twl_has_madc() && pdata->madc) { 590 child = add_child(2, "twl4030_madc", 591 pdata->madc, sizeof(*pdata->madc), 592 true, pdata->irq_base + MADC_INTR_OFFSET, 0); 593 if (IS_ERR(child)) 594 return PTR_ERR(child); 595 } 596 597 if (twl_has_rtc()) { 598 /* 599 * REVISIT platform_data here currently might expose the 600 * "msecure" line ... but for now we just expect board 601 * setup to tell the chip "it's always ok to SET_TIME". 602 * Eventually, Linux might become more aware of such 603 * HW security concerns, and "least privilege". 604 */ 605 sub_chip_id = twl_map[TWL_MODULE_RTC].sid; 606 child = add_child(sub_chip_id, "twl_rtc", 607 NULL, 0, 608 true, pdata->irq_base + RTC_INTR_OFFSET, 0); 609 if (IS_ERR(child)) 610 return PTR_ERR(child); 611 } 612 613 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { 614 615 static struct regulator_consumer_supply usb1v5 = { 616 .supply = "usb1v5", 617 }; 618 static struct regulator_consumer_supply usb1v8 = { 619 .supply = "usb1v8", 620 }; 621 static struct regulator_consumer_supply usb3v1 = { 622 .supply = "usb3v1", 623 }; 624 625 /* First add the regulators so that they can be used by transceiver */ 626 if (twl_has_regulator()) { 627 /* this is a template that gets copied */ 628 struct regulator_init_data usb_fixed = { 629 .constraints.valid_modes_mask = 630 REGULATOR_MODE_NORMAL 631 | REGULATOR_MODE_STANDBY, 632 .constraints.valid_ops_mask = 633 REGULATOR_CHANGE_MODE 634 | REGULATOR_CHANGE_STATUS, 635 }; 636 637 child = add_regulator_linked(TWL4030_REG_VUSB1V5, 638 &usb_fixed, &usb1v5, 1); 639 if (IS_ERR(child)) 640 return PTR_ERR(child); 641 642 child = add_regulator_linked(TWL4030_REG_VUSB1V8, 643 &usb_fixed, &usb1v8, 1); 644 if (IS_ERR(child)) 645 return PTR_ERR(child); 646 647 child = add_regulator_linked(TWL4030_REG_VUSB3V1, 648 &usb_fixed, &usb3v1, 1); 649 if (IS_ERR(child)) 650 return PTR_ERR(child); 651 652 } 653 654 child = add_child(0, "twl4030_usb", 655 pdata->usb, sizeof(*pdata->usb), 656 true, 657 /* irq0 = USB_PRES, irq1 = USB */ 658 pdata->irq_base + USB_PRES_INTR_OFFSET, 659 pdata->irq_base + USB_INTR_OFFSET); 660 661 if (IS_ERR(child)) 662 return PTR_ERR(child); 663 664 /* we need to connect regulators to this transceiver */ 665 if (twl_has_regulator() && child) { 666 usb1v5.dev = child; 667 usb1v8.dev = child; 668 usb3v1.dev = child; 669 } 670 } 671 672 if (twl_has_watchdog()) { 673 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); 674 if (IS_ERR(child)) 675 return PTR_ERR(child); 676 } 677 678 if (twl_has_pwrbutton()) { 679 child = add_child(1, "twl4030_pwrbutton", 680 NULL, 0, true, pdata->irq_base + 8 + 0, 0); 681 if (IS_ERR(child)) 682 return PTR_ERR(child); 683 } 684 685 if (twl_has_codec() && pdata->codec && twl_class_is_4030()) { 686 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 687 child = add_child(sub_chip_id, "twl4030_codec", 688 pdata->codec, sizeof(*pdata->codec), 689 false, 0, 0); 690 if (IS_ERR(child)) 691 return PTR_ERR(child); 692 } 693 694 /* Phoenix*/ 695 if (twl_has_codec() && pdata->codec && twl_class_is_6030()) { 696 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 697 child = add_child(sub_chip_id, "twl6040_codec", 698 pdata->codec, sizeof(*pdata->codec), 699 false, 0, 0); 700 if (IS_ERR(child)) 701 return PTR_ERR(child); 702 } 703 704 /* twl4030 regulators */ 705 if (twl_has_regulator() && twl_class_is_4030()) { 706 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); 707 if (IS_ERR(child)) 708 return PTR_ERR(child); 709 710 child = add_regulator(TWL4030_REG_VIO, pdata->vio); 711 if (IS_ERR(child)) 712 return PTR_ERR(child); 713 714 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1); 715 if (IS_ERR(child)) 716 return PTR_ERR(child); 717 718 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2); 719 if (IS_ERR(child)) 720 return PTR_ERR(child); 721 722 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); 723 if (IS_ERR(child)) 724 return PTR_ERR(child); 725 726 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); 727 if (IS_ERR(child)) 728 return PTR_ERR(child); 729 730 child = add_regulator((features & TWL4030_VAUX2) 731 ? TWL4030_REG_VAUX2_4030 732 : TWL4030_REG_VAUX2, 733 pdata->vaux2); 734 if (IS_ERR(child)) 735 return PTR_ERR(child); 736 737 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1); 738 if (IS_ERR(child)) 739 return PTR_ERR(child); 740 741 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2); 742 if (IS_ERR(child)) 743 return PTR_ERR(child); 744 745 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig); 746 if (IS_ERR(child)) 747 return PTR_ERR(child); 748 } 749 750 /* maybe add LDOs that are omitted on cost-reduced parts */ 751 if (twl_has_regulator() && !(features & TPS_SUBSET) 752 && twl_class_is_4030()) { 753 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); 754 if (IS_ERR(child)) 755 return PTR_ERR(child); 756 757 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); 758 if (IS_ERR(child)) 759 return PTR_ERR(child); 760 761 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); 762 if (IS_ERR(child)) 763 return PTR_ERR(child); 764 765 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); 766 if (IS_ERR(child)) 767 return PTR_ERR(child); 768 769 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); 770 if (IS_ERR(child)) 771 return PTR_ERR(child); 772 773 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); 774 if (IS_ERR(child)) 775 return PTR_ERR(child); 776 } 777 778 /* twl6030 regulators */ 779 if (twl_has_regulator() && twl_class_is_6030()) { 780 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc); 781 if (IS_ERR(child)) 782 return PTR_ERR(child); 783 784 child = add_regulator(TWL6030_REG_VPP, pdata->vpp); 785 if (IS_ERR(child)) 786 return PTR_ERR(child); 787 788 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim); 789 if (IS_ERR(child)) 790 return PTR_ERR(child); 791 792 child = add_regulator(TWL6030_REG_VANA, pdata->vana); 793 if (IS_ERR(child)) 794 return PTR_ERR(child); 795 796 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio); 797 if (IS_ERR(child)) 798 return PTR_ERR(child); 799 800 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac); 801 if (IS_ERR(child)) 802 return PTR_ERR(child); 803 804 child = add_regulator(TWL6030_REG_VUSB, pdata->vusb); 805 if (IS_ERR(child)) 806 return PTR_ERR(child); 807 808 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1); 809 if (IS_ERR(child)) 810 return PTR_ERR(child); 811 812 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2); 813 if (IS_ERR(child)) 814 return PTR_ERR(child); 815 816 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3); 817 if (IS_ERR(child)) 818 return PTR_ERR(child); 819 } 820 821 return 0; 822} 823 824/*----------------------------------------------------------------------*/ 825 826/* 827 * These three functions initialize the on-chip clock framework, 828 * letting it generate the right frequencies for USB, MADC, and 829 * other purposes. 830 */ 831static inline int __init protect_pm_master(void) 832{ 833 int e = 0; 834 835 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK, 836 R_PROTECT_KEY); 837 return e; 838} 839 840static inline int __init unprotect_pm_master(void) 841{ 842 int e = 0; 843 844 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1, 845 R_PROTECT_KEY); 846 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2, 847 R_PROTECT_KEY); 848 return e; 849} 850 851static void clocks_init(struct device *dev, 852 struct twl4030_clock_init_data *clock) 853{ 854 int e = 0; 855 struct clk *osc; 856 u32 rate; 857 u8 ctrl = HFCLK_FREQ_26_MHZ; 858 859#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) 860 if (cpu_is_omap2430()) 861 osc = clk_get(dev, "osc_ck"); 862 else 863 osc = clk_get(dev, "osc_sys_ck"); 864 865 if (IS_ERR(osc)) { 866 printk(KERN_WARNING "Skipping twl internal clock init and " 867 "using bootloader value (unknown osc rate)\n"); 868 return; 869 } 870 871 rate = clk_get_rate(osc); 872 clk_put(osc); 873 874#else 875 /* REVISIT for non-OMAP systems, pass the clock rate from 876 * board init code, using platform_data. 877 */ 878 osc = ERR_PTR(-EIO); 879 880 printk(KERN_WARNING "Skipping twl internal clock init and " 881 "using bootloader value (unknown osc rate)\n"); 882 883 return; 884#endif 885 886 switch (rate) { 887 case 19200000: 888 ctrl = HFCLK_FREQ_19p2_MHZ; 889 break; 890 case 26000000: 891 ctrl = HFCLK_FREQ_26_MHZ; 892 break; 893 case 38400000: 894 ctrl = HFCLK_FREQ_38p4_MHZ; 895 break; 896 } 897 898 ctrl |= HIGH_PERF_SQ; 899 if (clock && clock->ck32k_lowpwr_enable) 900 ctrl |= CK32K_LOWPWR_EN; 901 902 e |= unprotect_pm_master(); 903 /* effect->MADC+USB ck en */ 904 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); 905 e |= protect_pm_master(); 906 907 if (e < 0) 908 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); 909} 910 911/*----------------------------------------------------------------------*/ 912 913int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); 914int twl4030_exit_irq(void); 915int twl4030_init_chip_irq(const char *chip); 916int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); 917int twl6030_exit_irq(void); 918 919static int twl_remove(struct i2c_client *client) 920{ 921 unsigned i; 922 int status; 923 924 if (twl_class_is_4030()) 925 status = twl4030_exit_irq(); 926 else 927 status = twl6030_exit_irq(); 928 929 if (status < 0) 930 return status; 931 932 for (i = 0; i < TWL_NUM_SLAVES; i++) { 933 struct twl_client *twl = &twl_modules[i]; 934 935 if (twl->client && twl->client != client) 936 i2c_unregister_device(twl->client); 937 twl_modules[i].client = NULL; 938 } 939 inuse = false; 940 return 0; 941} 942 943/* NOTE: this driver only handles a single twl4030/tps659x0 chip */ 944static int __init 945twl_probe(struct i2c_client *client, const struct i2c_device_id *id) 946{ 947 int status; 948 unsigned i; 949 struct twl4030_platform_data *pdata = client->dev.platform_data; 950 u8 temp; 951 952 if (!pdata) { 953 dev_dbg(&client->dev, "no platform data?\n"); 954 return -EINVAL; 955 } 956 957 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { 958 dev_dbg(&client->dev, "can't talk I2C?\n"); 959 return -EIO; 960 } 961 962 if (inuse) { 963 dev_dbg(&client->dev, "driver is already in use\n"); 964 return -EBUSY; 965 } 966 967 for (i = 0; i < TWL_NUM_SLAVES; i++) { 968 struct twl_client *twl = &twl_modules[i]; 969 970 twl->address = client->addr + i; 971 if (i == 0) 972 twl->client = client; 973 else { 974 twl->client = i2c_new_dummy(client->adapter, 975 twl->address); 976 if (!twl->client) { 977 dev_err(&client->dev, 978 "can't attach client %d\n", i); 979 status = -ENOMEM; 980 goto fail; 981 } 982 } 983 mutex_init(&twl->xfer_lock); 984 } 985 inuse = true; 986 if ((id->driver_data) & TWL6030_CLASS) { 987 twl_id = TWL6030_CLASS_ID; 988 twl_map = &twl6030_map[0]; 989 } else { 990 twl_id = TWL4030_CLASS_ID; 991 twl_map = &twl4030_map[0]; 992 } 993 994 /* setup clock framework */ 995 clocks_init(&client->dev, pdata->clock); 996 997 /* load power event scripts */ 998 if (twl_has_power() && pdata->power) 999 twl4030_power_init(pdata->power); 1000 1001 /* Maybe init the T2 Interrupt subsystem */ 1002 if (client->irq 1003 && pdata->irq_base 1004 && pdata->irq_end > pdata->irq_base) { 1005 if (twl_class_is_4030()) { 1006 twl4030_init_chip_irq(id->name); 1007 status = twl4030_init_irq(client->irq, pdata->irq_base, 1008 pdata->irq_end); 1009 } else { 1010 status = twl6030_init_irq(client->irq, pdata->irq_base, 1011 pdata->irq_end); 1012 } 1013 1014 if (status < 0) 1015 goto fail; 1016 } 1017 1018 /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. 1019 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, 1020 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. 1021 */ 1022 1023 if (twl_class_is_4030()) { 1024 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); 1025 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ 1026 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); 1027 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); 1028 } 1029 1030 status = add_children(pdata, id->driver_data); 1031fail: 1032 if (status < 0) 1033 twl_remove(client); 1034 return status; 1035} 1036 1037static const struct i2c_device_id twl_ids[] = { 1038 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ 1039 { "twl5030", 0 }, /* T2 updated */ 1040 { "twl5031", TWL5031 }, /* TWL5030 updated */ 1041 { "tps65950", 0 }, /* catalog version of twl5030 */ 1042 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ 1043 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ 1044 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ 1045 { /* end of list */ }, 1046}; 1047MODULE_DEVICE_TABLE(i2c, twl_ids); 1048 1049/* One Client Driver , 4 Clients */ 1050static struct i2c_driver twl_driver = { 1051 .driver.name = DRIVER_NAME, 1052 .id_table = twl_ids, 1053 .probe = twl_probe, 1054 .remove = twl_remove, 1055}; 1056 1057static int __init twl_init(void) 1058{ 1059 return i2c_add_driver(&twl_driver); 1060} 1061subsys_initcall(twl_init); 1062 1063static void __exit twl_exit(void) 1064{ 1065 i2c_del_driver(&twl_driver); 1066} 1067module_exit(twl_exit); 1068 1069MODULE_AUTHOR("Texas Instruments, Inc."); 1070MODULE_DESCRIPTION("I2C Core interface for TWL"); 1071MODULE_LICENSE("GPL"); 1072