twl-core.c revision 14e5c82ca32870698b7cbe54196e00682d929ca5
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 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power 48 * Management and System Companion Device" chips originally designed for 49 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, 50 * often at around 3 Mbit/sec, including for interrupt handling. 51 * 52 * This driver core provides genirq support for the interrupts emitted, 53 * by the various modules, and exports register access primitives. 54 * 55 * FIXME this driver currently requires use of the first interrupt line 56 * (and associated registers). 57 */ 58 59#define DRIVER_NAME "twl" 60 61#if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) 62#define twl_has_keypad() true 63#else 64#define twl_has_keypad() false 65#endif 66 67#if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) 68#define twl_has_gpio() true 69#else 70#define twl_has_gpio() false 71#endif 72 73#if defined(CONFIG_REGULATOR_TWL4030) \ 74 || defined(CONFIG_REGULATOR_TWL4030_MODULE) 75#define twl_has_regulator() true 76#else 77#define twl_has_regulator() false 78#endif 79 80#if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) 81#define twl_has_madc() true 82#else 83#define twl_has_madc() false 84#endif 85 86#ifdef CONFIG_TWL4030_POWER 87#define twl_has_power() true 88#else 89#define twl_has_power() false 90#endif 91 92#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) 93#define twl_has_rtc() true 94#else 95#define twl_has_rtc() false 96#endif 97 98#if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) 99#define twl_has_usb() true 100#else 101#define twl_has_usb() false 102#endif 103 104#if defined(CONFIG_TWL4030_WATCHDOG) || \ 105 defined(CONFIG_TWL4030_WATCHDOG_MODULE) 106#define twl_has_watchdog() true 107#else 108#define twl_has_watchdog() false 109#endif 110 111#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\ 112 defined(CONFIG_SND_SOC_TWL6030) || defined(CONFIG_SND_SOC_TWL6030_MODULE) 113#define twl_has_codec() true 114#else 115#define twl_has_codec() false 116#endif 117 118/* Triton Core internal information (BEGIN) */ 119 120/* Last - for index max*/ 121#define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG 122 123#define TWL_NUM_SLAVES 4 124 125#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ 126 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE) 127#define twl_has_pwrbutton() true 128#else 129#define twl_has_pwrbutton() false 130#endif 131 132#define SUB_CHIP_ID0 0 133#define SUB_CHIP_ID1 1 134#define SUB_CHIP_ID2 2 135#define SUB_CHIP_ID3 3 136 137#define TWL_MODULE_LAST TWL4030_MODULE_LAST 138 139/* Base Address defns for twl4030_map[] */ 140 141/* subchip/slave 0 - USB ID */ 142#define TWL4030_BASEADD_USB 0x0000 143 144/* subchip/slave 1 - AUD ID */ 145#define TWL4030_BASEADD_AUDIO_VOICE 0x0000 146#define TWL4030_BASEADD_GPIO 0x0098 147#define TWL4030_BASEADD_INTBR 0x0085 148#define TWL4030_BASEADD_PIH 0x0080 149#define TWL4030_BASEADD_TEST 0x004C 150 151/* subchip/slave 2 - AUX ID */ 152#define TWL4030_BASEADD_INTERRUPTS 0x00B9 153#define TWL4030_BASEADD_LED 0x00EE 154#define TWL4030_BASEADD_MADC 0x0000 155#define TWL4030_BASEADD_MAIN_CHARGE 0x0074 156#define TWL4030_BASEADD_PRECHARGE 0x00AA 157#define TWL4030_BASEADD_PWM0 0x00F8 158#define TWL4030_BASEADD_PWM1 0x00FB 159#define TWL4030_BASEADD_PWMA 0x00EF 160#define TWL4030_BASEADD_PWMB 0x00F1 161#define TWL4030_BASEADD_KEYPAD 0x00D2 162 163#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ 164#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's 165 one */ 166 167/* subchip/slave 3 - POWER ID */ 168#define TWL4030_BASEADD_BACKUP 0x0014 169#define TWL4030_BASEADD_INT 0x002E 170#define TWL4030_BASEADD_PM_MASTER 0x0036 171#define TWL4030_BASEADD_PM_RECEIVER 0x005B 172#define TWL4030_BASEADD_RTC 0x001C 173#define TWL4030_BASEADD_SECURED_REG 0x0000 174 175/* Triton Core internal information (END) */ 176 177 178/* subchip/slave 0 0x48 - POWER */ 179#define TWL6030_BASEADD_RTC 0x0000 180#define TWL6030_BASEADD_MEM 0x0017 181#define TWL6030_BASEADD_PM_MASTER 0x001F 182#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ 183#define TWL6030_BASEADD_PM_MISC 0x00E2 184#define TWL6030_BASEADD_PM_PUPD 0x00F0 185 186/* subchip/slave 1 0x49 - FEATURE */ 187#define TWL6030_BASEADD_USB 0x0000 188#define TWL6030_BASEADD_GPADC_CTRL 0x002E 189#define TWL6030_BASEADD_AUX 0x0090 190#define TWL6030_BASEADD_PWM 0x00BA 191#define TWL6030_BASEADD_GASGAUGE 0x00C0 192#define TWL6030_BASEADD_PIH 0x00D0 193#define TWL6030_BASEADD_CHARGER 0x00E0 194 195/* subchip/slave 2 0x4A - DFT */ 196#define TWL6030_BASEADD_DIEID 0x00C0 197 198/* subchip/slave 3 0x4B - AUDIO */ 199#define TWL6030_BASEADD_AUDIO 0x0000 200#define TWL6030_BASEADD_RSV 0x0000 201 202/* Few power values */ 203#define R_CFG_BOOT 0x05 204#define R_PROTECT_KEY 0x0E 205 206/* access control values for R_PROTECT_KEY */ 207#define KEY_UNLOCK1 0xce 208#define KEY_UNLOCK2 0xec 209#define KEY_LOCK 0x00 210 211/* some fields in R_CFG_BOOT */ 212#define HFCLK_FREQ_19p2_MHZ (1 << 0) 213#define HFCLK_FREQ_26_MHZ (2 << 0) 214#define HFCLK_FREQ_38p4_MHZ (3 << 0) 215#define HIGH_PERF_SQ (1 << 3) 216#define CK32K_LOWPWR_EN (1 << 7) 217 218 219/* chip-specific feature flags, for i2c_device_id.driver_data */ 220#define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ 221#define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ 222#define TWL5031 BIT(2) /* twl5031 has different registers */ 223#define TWL6030_CLASS BIT(3) /* TWL6030 class */ 224 225/*----------------------------------------------------------------------*/ 226 227/* is driver active, bound to a chip? */ 228static bool inuse; 229 230static unsigned int twl_id; 231unsigned int twl_rev(void) 232{ 233 return twl_id; 234} 235EXPORT_SYMBOL(twl_rev); 236 237/* Structure for each TWL4030/TWL6030 Slave */ 238struct twl_client { 239 struct i2c_client *client; 240 u8 address; 241 242 /* max numb of i2c_msg required is for read =2 */ 243 struct i2c_msg xfer_msg[2]; 244 245 /* To lock access to xfer_msg */ 246 struct mutex xfer_lock; 247}; 248 249static struct twl_client twl_modules[TWL_NUM_SLAVES]; 250 251 252/* mapping the module id to slave id and base address */ 253struct twl_mapping { 254 unsigned char sid; /* Slave ID */ 255 unsigned char base; /* base address */ 256}; 257struct twl_mapping *twl_map; 258 259static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { 260 /* 261 * NOTE: don't change this table without updating the 262 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 263 * so they continue to match the order in this table. 264 */ 265 266 { 0, TWL4030_BASEADD_USB }, 267 268 { 1, TWL4030_BASEADD_AUDIO_VOICE }, 269 { 1, TWL4030_BASEADD_GPIO }, 270 { 1, TWL4030_BASEADD_INTBR }, 271 { 1, TWL4030_BASEADD_PIH }, 272 { 1, TWL4030_BASEADD_TEST }, 273 274 { 2, TWL4030_BASEADD_KEYPAD }, 275 { 2, TWL4030_BASEADD_MADC }, 276 { 2, TWL4030_BASEADD_INTERRUPTS }, 277 { 2, TWL4030_BASEADD_LED }, 278 { 2, TWL4030_BASEADD_MAIN_CHARGE }, 279 { 2, TWL4030_BASEADD_PRECHARGE }, 280 { 2, TWL4030_BASEADD_PWM0 }, 281 { 2, TWL4030_BASEADD_PWM1 }, 282 { 2, TWL4030_BASEADD_PWMA }, 283 { 2, TWL4030_BASEADD_PWMB }, 284 { 2, TWL5031_BASEADD_ACCESSORY }, 285 { 2, TWL5031_BASEADD_INTERRUPTS }, 286 287 { 3, TWL4030_BASEADD_BACKUP }, 288 { 3, TWL4030_BASEADD_INT }, 289 { 3, TWL4030_BASEADD_PM_MASTER }, 290 { 3, TWL4030_BASEADD_PM_RECEIVER }, 291 { 3, TWL4030_BASEADD_RTC }, 292 { 3, TWL4030_BASEADD_SECURED_REG }, 293}; 294 295static struct twl_mapping twl6030_map[] = { 296 /* 297 * NOTE: don't change this table without updating the 298 * <linux/i2c/twl.h> defines for TWL4030_MODULE_* 299 * so they continue to match the order in this table. 300 */ 301 { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, 302 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO }, 303 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, 304 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 305 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, 306 307 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 308 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 309 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, 310 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 311 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 312 313 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, 314 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, 315 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, 316 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 317 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 318 319 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 320 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 321 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, 322 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, 323 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, 324 325 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, 326 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, 327}; 328 329/*----------------------------------------------------------------------*/ 330 331/* Exported Functions */ 332 333/** 334 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 335 * @mod_no: module number 336 * @value: an array of num_bytes+1 containing data to write 337 * @reg: register address (just offset will do) 338 * @num_bytes: number of bytes to transfer 339 * 340 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and 341 * valid data starts at Offset 1. 342 * 343 * Returns the result of operation - 0 is success 344 */ 345int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 346{ 347 int ret; 348 int sid; 349 struct twl_client *twl; 350 struct i2c_msg *msg; 351 352 if (unlikely(mod_no > TWL_MODULE_LAST)) { 353 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 354 return -EPERM; 355 } 356 sid = twl_map[mod_no].sid; 357 twl = &twl_modules[sid]; 358 359 if (unlikely(!inuse)) { 360 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); 361 return -EPERM; 362 } 363 mutex_lock(&twl->xfer_lock); 364 /* 365 * [MSG1]: fill the register address data 366 * fill the data Tx buffer 367 */ 368 msg = &twl->xfer_msg[0]; 369 msg->addr = twl->address; 370 msg->len = num_bytes + 1; 371 msg->flags = 0; 372 msg->buf = value; 373 /* over write the first byte of buffer with the register address */ 374 *value = twl_map[mod_no].base + reg; 375 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); 376 mutex_unlock(&twl->xfer_lock); 377 378 /* i2c_transfer returns number of messages transferred */ 379 if (ret != 1) { 380 pr_err("%s: i2c_write failed to transfer all messages\n", 381 DRIVER_NAME); 382 if (ret < 0) 383 return ret; 384 else 385 return -EIO; 386 } else { 387 return 0; 388 } 389} 390EXPORT_SYMBOL(twl_i2c_write); 391 392/** 393 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 394 * @mod_no: module number 395 * @value: an array of num_bytes containing data to be read 396 * @reg: register address (just offset will do) 397 * @num_bytes: number of bytes to transfer 398 * 399 * Returns result of operation - num_bytes is success else failure. 400 */ 401int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) 402{ 403 int ret; 404 u8 val; 405 int sid; 406 struct twl_client *twl; 407 struct i2c_msg *msg; 408 409 if (unlikely(mod_no > TWL_MODULE_LAST)) { 410 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); 411 return -EPERM; 412 } 413 sid = twl_map[mod_no].sid; 414 twl = &twl_modules[sid]; 415 416 if (unlikely(!inuse)) { 417 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); 418 return -EPERM; 419 } 420 mutex_lock(&twl->xfer_lock); 421 /* [MSG1] fill the register address data */ 422 msg = &twl->xfer_msg[0]; 423 msg->addr = twl->address; 424 msg->len = 1; 425 msg->flags = 0; /* Read the register value */ 426 val = twl_map[mod_no].base + reg; 427 msg->buf = &val; 428 /* [MSG2] fill the data rx buffer */ 429 msg = &twl->xfer_msg[1]; 430 msg->addr = twl->address; 431 msg->flags = I2C_M_RD; /* Read the register value */ 432 msg->len = num_bytes; /* only n bytes */ 433 msg->buf = value; 434 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); 435 mutex_unlock(&twl->xfer_lock); 436 437 /* i2c_transfer returns number of messages transferred */ 438 if (ret != 2) { 439 pr_err("%s: i2c_read failed to transfer all messages\n", 440 DRIVER_NAME); 441 if (ret < 0) 442 return ret; 443 else 444 return -EIO; 445 } else { 446 return 0; 447 } 448} 449EXPORT_SYMBOL(twl_i2c_read); 450 451/** 452 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 453 * @mod_no: module number 454 * @value: the value to be written 8 bit 455 * @reg: register address (just offset will do) 456 * 457 * Returns result of operation - 0 is success 458 */ 459int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) 460{ 461 462 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ 463 u8 temp_buffer[2] = { 0 }; 464 /* offset 1 contains the data */ 465 temp_buffer[1] = value; 466 return twl_i2c_write(mod_no, temp_buffer, reg, 1); 467} 468EXPORT_SYMBOL(twl_i2c_write_u8); 469 470/** 471 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 472 * @mod_no: module number 473 * @value: the value read 8 bit 474 * @reg: register address (just offset will do) 475 * 476 * Returns result of operation - 0 is success 477 */ 478int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) 479{ 480 return twl_i2c_read(mod_no, value, reg, 1); 481} 482EXPORT_SYMBOL(twl_i2c_read_u8); 483 484/*----------------------------------------------------------------------*/ 485 486static struct device * 487add_numbered_child(unsigned chip, const char *name, int num, 488 void *pdata, unsigned pdata_len, 489 bool can_wakeup, int irq0, int irq1) 490{ 491 struct platform_device *pdev; 492 struct twl_client *twl = &twl_modules[chip]; 493 int status; 494 495 pdev = platform_device_alloc(name, num); 496 if (!pdev) { 497 dev_dbg(&twl->client->dev, "can't alloc dev\n"); 498 status = -ENOMEM; 499 goto err; 500 } 501 502 device_init_wakeup(&pdev->dev, can_wakeup); 503 pdev->dev.parent = &twl->client->dev; 504 505 if (pdata) { 506 status = platform_device_add_data(pdev, pdata, pdata_len); 507 if (status < 0) { 508 dev_dbg(&pdev->dev, "can't add platform_data\n"); 509 goto err; 510 } 511 } 512 513 if (irq0) { 514 struct resource r[2] = { 515 { .start = irq0, .flags = IORESOURCE_IRQ, }, 516 { .start = irq1, .flags = IORESOURCE_IRQ, }, 517 }; 518 519 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); 520 if (status < 0) { 521 dev_dbg(&pdev->dev, "can't add irqs\n"); 522 goto err; 523 } 524 } 525 526 status = platform_device_add(pdev); 527 528err: 529 if (status < 0) { 530 platform_device_put(pdev); 531 dev_err(&twl->client->dev, "can't add %s dev\n", name); 532 return ERR_PTR(status); 533 } 534 return &pdev->dev; 535} 536 537static inline struct device *add_child(unsigned chip, const char *name, 538 void *pdata, unsigned pdata_len, 539 bool can_wakeup, int irq0, int irq1) 540{ 541 return add_numbered_child(chip, name, -1, pdata, pdata_len, 542 can_wakeup, irq0, irq1); 543} 544 545static struct device * 546add_regulator_linked(int num, struct regulator_init_data *pdata, 547 struct regulator_consumer_supply *consumers, 548 unsigned num_consumers) 549{ 550 unsigned sub_chip_id; 551 /* regulator framework demands init_data ... */ 552 if (!pdata) 553 return NULL; 554 555 if (consumers) { 556 pdata->consumer_supplies = consumers; 557 pdata->num_consumer_supplies = num_consumers; 558 } 559 560 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ 561 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; 562 return add_numbered_child(sub_chip_id, "twl_reg", num, 563 pdata, sizeof(*pdata), false, 0, 0); 564} 565 566static struct device * 567add_regulator(int num, struct regulator_init_data *pdata) 568{ 569 return add_regulator_linked(num, pdata, NULL, 0); 570} 571 572/* 573 * NOTE: We know the first 8 IRQs after pdata->base_irq are 574 * for the PIH, and the next are for the PWR_INT SIH, since 575 * that's how twl_init_irq() sets things up. 576 */ 577 578static int 579add_children(struct twl4030_platform_data *pdata, unsigned long features) 580{ 581 struct device *child; 582 unsigned sub_chip_id; 583 584 if (twl_has_gpio() && pdata->gpio) { 585 child = add_child(SUB_CHIP_ID1, "twl4030_gpio", 586 pdata->gpio, sizeof(*pdata->gpio), 587 false, pdata->irq_base + GPIO_INTR_OFFSET, 0); 588 if (IS_ERR(child)) 589 return PTR_ERR(child); 590 } 591 592 if (twl_has_keypad() && pdata->keypad) { 593 child = add_child(SUB_CHIP_ID2, "twl4030_keypad", 594 pdata->keypad, sizeof(*pdata->keypad), 595 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); 596 if (IS_ERR(child)) 597 return PTR_ERR(child); 598 } 599 600 if (twl_has_madc() && pdata->madc) { 601 child = add_child(2, "twl4030_madc", 602 pdata->madc, sizeof(*pdata->madc), 603 true, pdata->irq_base + MADC_INTR_OFFSET, 0); 604 if (IS_ERR(child)) 605 return PTR_ERR(child); 606 } 607 608 if (twl_has_rtc()) { 609 /* 610 * REVISIT platform_data here currently might expose the 611 * "msecure" line ... but for now we just expect board 612 * setup to tell the chip "it's always ok to SET_TIME". 613 * Eventually, Linux might become more aware of such 614 * HW security concerns, and "least privilege". 615 */ 616 sub_chip_id = twl_map[TWL_MODULE_RTC].sid; 617 child = add_child(sub_chip_id, "twl_rtc", 618 NULL, 0, 619 true, pdata->irq_base + RTC_INTR_OFFSET, 0); 620 if (IS_ERR(child)) 621 return PTR_ERR(child); 622 } 623 624 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { 625 626 static struct regulator_consumer_supply usb1v5 = { 627 .supply = "usb1v5", 628 }; 629 static struct regulator_consumer_supply usb1v8 = { 630 .supply = "usb1v8", 631 }; 632 static struct regulator_consumer_supply usb3v1 = { 633 .supply = "usb3v1", 634 }; 635 636 /* First add the regulators so that they can be used by transceiver */ 637 if (twl_has_regulator()) { 638 /* this is a template that gets copied */ 639 struct regulator_init_data usb_fixed = { 640 .constraints.valid_modes_mask = 641 REGULATOR_MODE_NORMAL 642 | REGULATOR_MODE_STANDBY, 643 .constraints.valid_ops_mask = 644 REGULATOR_CHANGE_MODE 645 | REGULATOR_CHANGE_STATUS, 646 }; 647 648 child = add_regulator_linked(TWL4030_REG_VUSB1V5, 649 &usb_fixed, &usb1v5, 1); 650 if (IS_ERR(child)) 651 return PTR_ERR(child); 652 653 child = add_regulator_linked(TWL4030_REG_VUSB1V8, 654 &usb_fixed, &usb1v8, 1); 655 if (IS_ERR(child)) 656 return PTR_ERR(child); 657 658 child = add_regulator_linked(TWL4030_REG_VUSB3V1, 659 &usb_fixed, &usb3v1, 1); 660 if (IS_ERR(child)) 661 return PTR_ERR(child); 662 663 } 664 665 child = add_child(0, "twl4030_usb", 666 pdata->usb, sizeof(*pdata->usb), 667 true, 668 /* irq0 = USB_PRES, irq1 = USB */ 669 pdata->irq_base + USB_PRES_INTR_OFFSET, 670 pdata->irq_base + USB_INTR_OFFSET); 671 672 if (IS_ERR(child)) 673 return PTR_ERR(child); 674 675 /* we need to connect regulators to this transceiver */ 676 if (twl_has_regulator() && child) { 677 usb1v5.dev = child; 678 usb1v8.dev = child; 679 usb3v1.dev = child; 680 } 681 } 682 683 if (twl_has_watchdog()) { 684 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); 685 if (IS_ERR(child)) 686 return PTR_ERR(child); 687 } 688 689 if (twl_has_pwrbutton()) { 690 child = add_child(1, "twl4030_pwrbutton", 691 NULL, 0, true, pdata->irq_base + 8 + 0, 0); 692 if (IS_ERR(child)) 693 return PTR_ERR(child); 694 } 695 696 if (twl_has_codec() && pdata->codec && twl_class_is_4030()) { 697 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 698 child = add_child(sub_chip_id, "twl4030_codec", 699 pdata->codec, sizeof(*pdata->codec), 700 false, 0, 0); 701 if (IS_ERR(child)) 702 return PTR_ERR(child); 703 } 704 705 /* Phoenix*/ 706 if (twl_has_codec() && pdata->codec && twl_class_is_6030()) { 707 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; 708 child = add_child(sub_chip_id, "twl6030_codec", 709 pdata->codec, sizeof(*pdata->codec), 710 false, 0, 0); 711 if (IS_ERR(child)) 712 return PTR_ERR(child); 713 } 714 715 /* twl4030 regulators */ 716 if (twl_has_regulator() && twl_class_is_4030()) { 717 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); 718 if (IS_ERR(child)) 719 return PTR_ERR(child); 720 721 child = add_regulator(TWL4030_REG_VIO, pdata->vio); 722 if (IS_ERR(child)) 723 return PTR_ERR(child); 724 725 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1); 726 if (IS_ERR(child)) 727 return PTR_ERR(child); 728 729 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2); 730 if (IS_ERR(child)) 731 return PTR_ERR(child); 732 733 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); 734 if (IS_ERR(child)) 735 return PTR_ERR(child); 736 737 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); 738 if (IS_ERR(child)) 739 return PTR_ERR(child); 740 741 child = add_regulator((features & TWL4030_VAUX2) 742 ? TWL4030_REG_VAUX2_4030 743 : TWL4030_REG_VAUX2, 744 pdata->vaux2); 745 if (IS_ERR(child)) 746 return PTR_ERR(child); 747 748 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1); 749 if (IS_ERR(child)) 750 return PTR_ERR(child); 751 752 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2); 753 if (IS_ERR(child)) 754 return PTR_ERR(child); 755 756 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig); 757 if (IS_ERR(child)) 758 return PTR_ERR(child); 759 } 760 761 /* maybe add LDOs that are omitted on cost-reduced parts */ 762 if (twl_has_regulator() && !(features & TPS_SUBSET) 763 && twl_class_is_4030()) { 764 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); 765 if (IS_ERR(child)) 766 return PTR_ERR(child); 767 768 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); 769 if (IS_ERR(child)) 770 return PTR_ERR(child); 771 772 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); 773 if (IS_ERR(child)) 774 return PTR_ERR(child); 775 776 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); 777 if (IS_ERR(child)) 778 return PTR_ERR(child); 779 780 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); 781 if (IS_ERR(child)) 782 return PTR_ERR(child); 783 784 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); 785 if (IS_ERR(child)) 786 return PTR_ERR(child); 787 } 788 789 /* twl6030 regulators */ 790 if (twl_has_regulator() && twl_class_is_6030()) { 791 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc); 792 if (IS_ERR(child)) 793 return PTR_ERR(child); 794 795 child = add_regulator(TWL6030_REG_VPP, pdata->vpp); 796 if (IS_ERR(child)) 797 return PTR_ERR(child); 798 799 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim); 800 if (IS_ERR(child)) 801 return PTR_ERR(child); 802 803 child = add_regulator(TWL6030_REG_VANA, pdata->vana); 804 if (IS_ERR(child)) 805 return PTR_ERR(child); 806 807 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio); 808 if (IS_ERR(child)) 809 return PTR_ERR(child); 810 811 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac); 812 if (IS_ERR(child)) 813 return PTR_ERR(child); 814 815 child = add_regulator(TWL6030_REG_VUSB, pdata->vusb); 816 if (IS_ERR(child)) 817 return PTR_ERR(child); 818 819 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1); 820 if (IS_ERR(child)) 821 return PTR_ERR(child); 822 823 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2); 824 if (IS_ERR(child)) 825 return PTR_ERR(child); 826 827 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3); 828 if (IS_ERR(child)) 829 return PTR_ERR(child); 830 } 831 832 return 0; 833} 834 835/*----------------------------------------------------------------------*/ 836 837/* 838 * These three functions initialize the on-chip clock framework, 839 * letting it generate the right frequencies for USB, MADC, and 840 * other purposes. 841 */ 842static inline int __init protect_pm_master(void) 843{ 844 int e = 0; 845 846 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK, 847 R_PROTECT_KEY); 848 return e; 849} 850 851static inline int __init unprotect_pm_master(void) 852{ 853 int e = 0; 854 855 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1, 856 R_PROTECT_KEY); 857 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2, 858 R_PROTECT_KEY); 859 return e; 860} 861 862static void clocks_init(struct device *dev, 863 struct twl4030_clock_init_data *clock) 864{ 865 int e = 0; 866 struct clk *osc; 867 u32 rate; 868 u8 ctrl = HFCLK_FREQ_26_MHZ; 869 870#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) 871 if (cpu_is_omap2430()) 872 osc = clk_get(dev, "osc_ck"); 873 else 874 osc = clk_get(dev, "osc_sys_ck"); 875 876 if (IS_ERR(osc)) { 877 printk(KERN_WARNING "Skipping twl internal clock init and " 878 "using bootloader value (unknown osc rate)\n"); 879 return; 880 } 881 882 rate = clk_get_rate(osc); 883 clk_put(osc); 884 885#else 886 /* REVISIT for non-OMAP systems, pass the clock rate from 887 * board init code, using platform_data. 888 */ 889 osc = ERR_PTR(-EIO); 890 891 printk(KERN_WARNING "Skipping twl internal clock init and " 892 "using bootloader value (unknown osc rate)\n"); 893 894 return; 895#endif 896 897 switch (rate) { 898 case 19200000: 899 ctrl = HFCLK_FREQ_19p2_MHZ; 900 break; 901 case 26000000: 902 ctrl = HFCLK_FREQ_26_MHZ; 903 break; 904 case 38400000: 905 ctrl = HFCLK_FREQ_38p4_MHZ; 906 break; 907 } 908 909 ctrl |= HIGH_PERF_SQ; 910 if (clock && clock->ck32k_lowpwr_enable) 911 ctrl |= CK32K_LOWPWR_EN; 912 913 e |= unprotect_pm_master(); 914 /* effect->MADC+USB ck en */ 915 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); 916 e |= protect_pm_master(); 917 918 if (e < 0) 919 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); 920} 921 922/*----------------------------------------------------------------------*/ 923 924int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); 925int twl4030_exit_irq(void); 926int twl4030_init_chip_irq(const char *chip); 927int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); 928int twl6030_exit_irq(void); 929 930static int twl_remove(struct i2c_client *client) 931{ 932 unsigned i; 933 int status; 934 935 if (twl_class_is_4030()) 936 status = twl4030_exit_irq(); 937 else 938 status = twl6030_exit_irq(); 939 940 if (status < 0) 941 return status; 942 943 for (i = 0; i < TWL_NUM_SLAVES; i++) { 944 struct twl_client *twl = &twl_modules[i]; 945 946 if (twl->client && twl->client != client) 947 i2c_unregister_device(twl->client); 948 twl_modules[i].client = NULL; 949 } 950 inuse = false; 951 return 0; 952} 953 954/* NOTE: this driver only handles a single twl4030/tps659x0 chip */ 955static int __init 956twl_probe(struct i2c_client *client, const struct i2c_device_id *id) 957{ 958 int status; 959 unsigned i; 960 struct twl4030_platform_data *pdata = client->dev.platform_data; 961 962 if (!pdata) { 963 dev_dbg(&client->dev, "no platform data?\n"); 964 return -EINVAL; 965 } 966 967 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { 968 dev_dbg(&client->dev, "can't talk I2C?\n"); 969 return -EIO; 970 } 971 972 if (inuse) { 973 dev_dbg(&client->dev, "driver is already in use\n"); 974 return -EBUSY; 975 } 976 977 for (i = 0; i < TWL_NUM_SLAVES; i++) { 978 struct twl_client *twl = &twl_modules[i]; 979 980 twl->address = client->addr + i; 981 if (i == 0) 982 twl->client = client; 983 else { 984 twl->client = i2c_new_dummy(client->adapter, 985 twl->address); 986 if (!twl->client) { 987 dev_err(&client->dev, 988 "can't attach client %d\n", i); 989 status = -ENOMEM; 990 goto fail; 991 } 992 } 993 mutex_init(&twl->xfer_lock); 994 } 995 inuse = true; 996 if ((id->driver_data) & TWL6030_CLASS) { 997 twl_id = TWL6030_CLASS_ID; 998 twl_map = &twl6030_map[0]; 999 } else { 1000 twl_id = TWL4030_CLASS_ID; 1001 twl_map = &twl4030_map[0]; 1002 } 1003 1004 /* setup clock framework */ 1005 clocks_init(&client->dev, pdata->clock); 1006 1007 /* load power event scripts */ 1008 if (twl_has_power() && pdata->power) 1009 twl4030_power_init(pdata->power); 1010 1011 /* Maybe init the T2 Interrupt subsystem */ 1012 if (client->irq 1013 && pdata->irq_base 1014 && pdata->irq_end > pdata->irq_base) { 1015 if (twl_class_is_4030()) { 1016 twl4030_init_chip_irq(id->name); 1017 status = twl4030_init_irq(client->irq, pdata->irq_base, 1018 pdata->irq_end); 1019 } else { 1020 status = twl6030_init_irq(client->irq, pdata->irq_base, 1021 pdata->irq_end); 1022 } 1023 1024 if (status < 0) 1025 goto fail; 1026 } 1027 1028 status = add_children(pdata, id->driver_data); 1029fail: 1030 if (status < 0) 1031 twl_remove(client); 1032 return status; 1033} 1034 1035static const struct i2c_device_id twl_ids[] = { 1036 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ 1037 { "twl5030", 0 }, /* T2 updated */ 1038 { "twl5031", TWL5031 }, /* TWL5030 updated */ 1039 { "tps65950", 0 }, /* catalog version of twl5030 */ 1040 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ 1041 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ 1042 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ 1043 { /* end of list */ }, 1044}; 1045MODULE_DEVICE_TABLE(i2c, twl_ids); 1046 1047/* One Client Driver , 4 Clients */ 1048static struct i2c_driver twl_driver = { 1049 .driver.name = DRIVER_NAME, 1050 .id_table = twl_ids, 1051 .probe = twl_probe, 1052 .remove = twl_remove, 1053}; 1054 1055static int __init twl_init(void) 1056{ 1057 return i2c_add_driver(&twl_driver); 1058} 1059subsys_initcall(twl_init); 1060 1061static void __exit twl_exit(void) 1062{ 1063 i2c_del_driver(&twl_driver); 1064} 1065module_exit(twl_exit); 1066 1067MODULE_AUTHOR("Texas Instruments, Inc."); 1068MODULE_DESCRIPTION("I2C Core interface for TWL"); 1069MODULE_LICENSE("GPL"); 1070