drivers/mfd/twl-core.c

   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         defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
 100 #define twl_has_usb()   true
 101 #else
 102 #define twl_has_usb()   false
 103 #endif
 104
 105 #if defined(CONFIG_TWL4030_WATCHDOG) || \
 106         defined(CONFIG_TWL4030_WATCHDOG_MODULE)
 107 #define twl_has_watchdog()        true
 108 #else
 109 #define twl_has_watchdog()        false
 110 #endif
 111
 112 #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\
 113         defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
 114 #define twl_has_codec() true
 115 #else
 116 #define twl_has_codec() false
 117 #endif
 118
 119 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
 120 #define twl_has_bci()   true
 121 #else
 122 #define twl_has_bci()   false
 123 #endif
 124
 125 /* Triton Core internal information (BEGIN) */
 126
 127 /* Last - for index max*/
 128 #define TWL4030_MODULE_LAST             TWL4030_MODULE_SECURED_REG
 129
 130 #define TWL_NUM_SLAVES          4
 131
 132 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
 133         || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
 134 #define twl_has_pwrbutton()     true
 135 #else
 136 #define twl_has_pwrbutton()     false
 137 #endif
 138
 139 #define SUB_CHIP_ID0 0
 140 #define SUB_CHIP_ID1 1
 141 #define SUB_CHIP_ID2 2
 142 #define SUB_CHIP_ID3 3
 143
 144 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
 145
 146 /* Base Address defns for twl4030_map[] */
 147
 148 /* subchip/slave 0 - USB ID */
 149 #define TWL4030_BASEADD_USB             0x0000
 150
 151 /* subchip/slave 1 - AUD ID */
 152 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
 153 #define TWL4030_BASEADD_GPIO            0x0098
 154 #define TWL4030_BASEADD_INTBR           0x0085
 155 #define TWL4030_BASEADD_PIH             0x0080
 156 #define TWL4030_BASEADD_TEST            0x004C
 157
 158 /* subchip/slave 2 - AUX ID */
 159 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
 160 #define TWL4030_BASEADD_LED             0x00EE
 161 #define TWL4030_BASEADD_MADC            0x0000
 162 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
 163 #define TWL4030_BASEADD_PRECHARGE       0x00AA
 164 #define TWL4030_BASEADD_PWM0            0x00F8
 165 #define TWL4030_BASEADD_PWM1            0x00FB
 166 #define TWL4030_BASEADD_PWMA            0x00EF
 167 #define TWL4030_BASEADD_PWMB            0x00F1
 168 #define TWL4030_BASEADD_KEYPAD          0x00D2
 169
 170 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
 171 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
 172                                                   one */
 173
 174 /* subchip/slave 3 - POWER ID */
 175 #define TWL4030_BASEADD_BACKUP          0x0014
 176 #define TWL4030_BASEADD_INT             0x002E
 177 #define TWL4030_BASEADD_PM_MASTER       0x0036
 178 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
 179 #define TWL4030_BASEADD_RTC             0x001C
 180 #define TWL4030_BASEADD_SECURED_REG     0x0000
 181
 182 /* Triton Core internal information (END) */
 183
 184
 185 /* subchip/slave 0 0x48 - POWER */
 186 #define TWL6030_BASEADD_RTC             0x0000
 187 #define TWL6030_BASEADD_MEM             0x0017
 188 #define TWL6030_BASEADD_PM_MASTER       0x001F
 189 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 190 #define TWL6030_BASEADD_PM_MISC         0x00E2
 191 #define TWL6030_BASEADD_PM_PUPD         0x00F0
 192
 193 /* subchip/slave 1 0x49 - FEATURE */
 194 #define TWL6030_BASEADD_USB             0x0000
 195 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
 196 #define TWL6030_BASEADD_AUX             0x0090
 197 #define TWL6030_BASEADD_PWM             0x00BA
 198 #define TWL6030_BASEADD_GASGAUGE        0x00C0
 199 #define TWL6030_BASEADD_PIH             0x00D0
 200 #define TWL6030_BASEADD_CHARGER         0x00E0
 201 #define TWL6025_BASEADD_CHARGER         0x00DA
 202
 203 /* subchip/slave 2 0x4A - DFT */
 204 #define TWL6030_BASEADD_DIEID           0x00C0
 205
 206 /* subchip/slave 3 0x4B - AUDIO */
 207 #define TWL6030_BASEADD_AUDIO           0x0000
 208 #define TWL6030_BASEADD_RSV             0x0000
 209 #define TWL6030_BASEADD_ZERO            0x0000
 210
 211 /* Few power values */
 212 #define R_CFG_BOOT                      0x05
 213
 214 /* some fields in R_CFG_BOOT */
 215 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 216 #define HFCLK_FREQ_26_MHZ               (2 << 0)
 217 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 218 #define HIGH_PERF_SQ                    (1 << 3)
 219 #define CK32K_LOWPWR_EN                 (1 << 7)
 220
 221
 222 /* chip-specific feature flags, for i2c_device_id.driver_data */
 223 #define TWL4030_VAUX2           BIT(0)  /* pre-5030 voltage ranges */
 224 #define TPS_SUBSET              BIT(1)  /* tps659[23]0 have fewer LDOs */
 225 #define TWL5031                 BIT(2)  /* twl5031 has different registers */
 226 #define TWL6030_CLASS           BIT(3)  /* TWL6030 class */
 227
 228 /*----------------------------------------------------------------------*/
 229
 230 /* is driver active, bound to a chip? */
 231 static bool inuse;
 232
 233 /* TWL IDCODE Register value */
 234 static u32 twl_idcode;
 235
 236 static unsigned int twl_id;
 237 unsigned int twl_rev(void)
 238 {
 239         return twl_id;
 240 }
 241 EXPORT_SYMBOL(twl_rev);
 242
 243 /* Structure for each TWL4030/TWL6030 Slave */
 244 struct twl_client {
 245         struct i2c_client *client;
 246         u8 address;
 247
 248         /* max numb of i2c_msg required is for read =2 */
 249         struct i2c_msg xfer_msg[2];
 250
 251         /* To lock access to xfer_msg */
 252         struct mutex xfer_lock;
 253 };
 254
 255 static struct twl_client twl_modules[TWL_NUM_SLAVES];
 256
 257
 258 /* mapping the module id to slave id and base address */
 259 struct twl_mapping {
 260         unsigned char sid;      /* Slave ID */
 261         unsigned char base;     /* base address */
 262 };
 263 static struct twl_mapping *twl_map;
 264
 265 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
 266         /*
 267          * NOTE:  don't change this table without updating the
 268          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 269          * so they continue to match the order in this table.
 270          */
 271
 272         { 0, TWL4030_BASEADD_USB },
 273
 274         { 1, TWL4030_BASEADD_AUDIO_VOICE },
 275         { 1, TWL4030_BASEADD_GPIO },
 276         { 1, TWL4030_BASEADD_INTBR },
 277         { 1, TWL4030_BASEADD_PIH },
 278         { 1, TWL4030_BASEADD_TEST },
 279
 280         { 2, TWL4030_BASEADD_KEYPAD },
 281         { 2, TWL4030_BASEADD_MADC },
 282         { 2, TWL4030_BASEADD_INTERRUPTS },
 283         { 2, TWL4030_BASEADD_LED },
 284         { 2, TWL4030_BASEADD_MAIN_CHARGE },
 285         { 2, TWL4030_BASEADD_PRECHARGE },
 286         { 2, TWL4030_BASEADD_PWM0 },
 287         { 2, TWL4030_BASEADD_PWM1 },
 288         { 2, TWL4030_BASEADD_PWMA },
 289         { 2, TWL4030_BASEADD_PWMB },
 290         { 2, TWL5031_BASEADD_ACCESSORY },
 291         { 2, TWL5031_BASEADD_INTERRUPTS },
 292
 293         { 3, TWL4030_BASEADD_BACKUP },
 294         { 3, TWL4030_BASEADD_INT },
 295         { 3, TWL4030_BASEADD_PM_MASTER },
 296         { 3, TWL4030_BASEADD_PM_RECEIVER },
 297         { 3, TWL4030_BASEADD_RTC },
 298         { 3, TWL4030_BASEADD_SECURED_REG },
 299 };
 300
 301 static struct twl_mapping twl6030_map[] = {
 302         /*
 303          * NOTE:  don't change this table without updating the
 304          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 305          * so they continue to match the order in this table.
 306          */
 307         { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
 308         { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
 309         { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
 310         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 311         { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
 312
 313         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 314         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 315         { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
 316         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 317         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 318
 319         { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
 320         { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
 321         { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
 322         { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
 323         { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
 324
 325         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 326         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 327         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 328         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 329         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 330         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
 331         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
 332
 333         { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
 334         { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
 335         { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
 336 };
 337
 338 /*----------------------------------------------------------------------*/
 339
 340 /* Exported Functions */
 341
 342 /**
 343  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 344  * @mod_no: module number
 345  * @value: an array of num_bytes+1 containing data to write
 346  * @reg: register address (just offset will do)
 347  * @num_bytes: number of bytes to transfer
 348  *
 349  * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
 350  * valid data starts at Offset 1.
 351  *
 352  * Returns the result of operation - 0 is success
 353  */
 354 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 355 {
 356         int ret;
 357         int sid;
 358         struct twl_client *twl;
 359         struct i2c_msg *msg;
 360
 361         if (unlikely(mod_no > TWL_MODULE_LAST)) {
 362                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 363                 return -EPERM;
 364         }
 365         sid = twl_map[mod_no].sid;
 366         twl = &twl_modules[sid];
 367
 368         if (unlikely(!inuse)) {
 369                 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
 370                 return -EPERM;
 371         }
 372         mutex_lock(&twl->xfer_lock);
 373         /*
 374          * [MSG1]: fill the register address data
 375          * fill the data Tx buffer
 376          */
 377         msg = &twl->xfer_msg[0];
 378         msg->addr = twl->address;
 379         msg->len = num_bytes + 1;
 380         msg->flags = 0;
 381         msg->buf = value;
 382         /* over write the first byte of buffer with the register address */
 383         *value = twl_map[mod_no].base + reg;
 384         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
 385         mutex_unlock(&twl->xfer_lock);
 386
 387         /* i2c_transfer returns number of messages transferred */
 388         if (ret != 1) {
 389                 pr_err("%s: i2c_write failed to transfer all messages\n",
 390                         DRIVER_NAME);
 391                 if (ret < 0)
 392                         return ret;
 393                 else
 394                         return -EIO;
 395         } else {
 396                 return 0;
 397         }
 398 }
 399 EXPORT_SYMBOL(twl_i2c_write);
 400
 401 /**
 402  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 403  * @mod_no: module number
 404  * @value: an array of num_bytes containing data to be read
 405  * @reg: register address (just offset will do)
 406  * @num_bytes: number of bytes to transfer
 407  *
 408  * Returns result of operation - num_bytes is success else failure.
 409  */
 410 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 411 {
 412         int ret;
 413         u8 val;
 414         int sid;
 415         struct twl_client *twl;
 416         struct i2c_msg *msg;
 417
 418         if (unlikely(mod_no > TWL_MODULE_LAST)) {
 419                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 420                 return -EPERM;
 421         }
 422         sid = twl_map[mod_no].sid;
 423         twl = &twl_modules[sid];
 424
 425         if (unlikely(!inuse)) {
 426                 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
 427                 return -EPERM;
 428         }
 429         mutex_lock(&twl->xfer_lock);
 430         /* [MSG1] fill the register address data */
 431         msg = &twl->xfer_msg[0];
 432         msg->addr = twl->address;
 433         msg->len = 1;
 434         msg->flags = 0; /* Read the register value */
 435         val = twl_map[mod_no].base + reg;
 436         msg->buf = &val;
 437         /* [MSG2] fill the data rx buffer */
 438         msg = &twl->xfer_msg[1];
 439         msg->addr = twl->address;
 440         msg->flags = I2C_M_RD;  /* Read the register value */
 441         msg->len = num_bytes;   /* only n bytes */
 442         msg->buf = value;
 443         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
 444         mutex_unlock(&twl->xfer_lock);
 445
 446         /* i2c_transfer returns number of messages transferred */
 447         if (ret != 2) {
 448                 pr_err("%s: i2c_read failed to transfer all messages\n",
 449                         DRIVER_NAME);
 450                 if (ret < 0)
 451                         return ret;
 452                 else
 453                         return -EIO;
 454         } else {
 455                 return 0;
 456         }
 457 }
 458 EXPORT_SYMBOL(twl_i2c_read);
 459
 460 /**
 461  * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
 462  * @mod_no: module number
 463  * @value: the value to be written 8 bit
 464  * @reg: register address (just offset will do)
 465  *
 466  * Returns result of operation - 0 is success
 467  */
 468 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
 469 {
 470
 471         /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
 472         u8 temp_buffer[2] = { 0 };
 473         /* offset 1 contains the data */
 474         temp_buffer[1] = value;
 475         return twl_i2c_write(mod_no, temp_buffer, reg, 1);
 476 }
 477 EXPORT_SYMBOL(twl_i2c_write_u8);
 478
 479 /**
 480  * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
 481  * @mod_no: module number
 482  * @value: the value read 8 bit
 483  * @reg: register address (just offset will do)
 484  *
 485  * Returns result of operation - 0 is success
 486  */
 487 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
 488 {
 489         return twl_i2c_read(mod_no, value, reg, 1);
 490 }
 491 EXPORT_SYMBOL(twl_i2c_read_u8);
 492
 493 /*----------------------------------------------------------------------*/
 494
 495 /**
 496  * twl_read_idcode_register - API to read the IDCODE register.
 497  *
 498  * Unlocks the IDCODE register and read the 32 bit value.
 499  */
 500 static int twl_read_idcode_register(void)
 501 {
 502         int err;
 503
 504         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 505                                                 REG_UNLOCK_TEST_REG);
 506         if (err) {
 507                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 508                 goto fail;
 509         }
 510
 511         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
 512                                                 REG_IDCODE_7_0, 4);
 513         if (err) {
 514                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 515                 goto fail;
 516         }
 517
 518         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 519         if (err)
 520                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 521 fail:
 522         return err;
 523 }
 524
 525 /**
 526  * twl_get_type - API to get TWL Si type.
 527  *
 528  * Api to get the TWL Si type from IDCODE value.
 529  */
 530 int twl_get_type(void)
 531 {
 532         return TWL_SIL_TYPE(twl_idcode);
 533 }
 534 EXPORT_SYMBOL_GPL(twl_get_type);
 535
 536 /**
 537  * twl_get_version - API to get TWL Si version.
 538  *
 539  * Api to get the TWL Si version from IDCODE value.
 540  */
 541 int twl_get_version(void)
 542 {
 543         return TWL_SIL_REV(twl_idcode);
 544 }
 545 EXPORT_SYMBOL_GPL(twl_get_version);
 546
 547 static struct device *
 548 add_numbered_child(unsigned chip, const char *name, int num,
 549                 void *pdata, unsigned pdata_len,
 550                 bool can_wakeup, int irq0, int irq1)
 551 {
 552         struct platform_device  *pdev;
 553         struct twl_client       *twl = &twl_modules[chip];
 554         int                     status;
 555
 556         pdev = platform_device_alloc(name, num);
 557         if (!pdev) {
 558                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
 559                 status = -ENOMEM;
 560                 goto err;
 561         }
 562
 563         device_init_wakeup(&pdev->dev, can_wakeup);
 564         pdev->dev.parent = &twl->client->dev;
 565
 566         if (pdata) {
 567                 status = platform_device_add_data(pdev, pdata, pdata_len);
 568                 if (status < 0) {
 569                         dev_dbg(&pdev->dev, "can't add platform_data\n");
 570                         goto err;
 571                 }
 572         }
 573
 574         if (irq0) {
 575                 struct resource r[2] = {
 576                         { .start = irq0, .flags = IORESOURCE_IRQ, },
 577                         { .start = irq1, .flags = IORESOURCE_IRQ, },
 578                 };
 579
 580                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 581                 if (status < 0) {
 582                         dev_dbg(&pdev->dev, "can't add irqs\n");
 583                         goto err;
 584                 }
 585         }
 586
 587         status = platform_device_add(pdev);
 588
 589 err:
 590         if (status < 0) {
 591                 platform_device_put(pdev);
 592                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
 593                 return ERR_PTR(status);
 594         }
 595         return &pdev->dev;
 596 }
 597
 598 static inline struct device *add_child(unsigned chip, const char *name,
 599                 void *pdata, unsigned pdata_len,
 600                 bool can_wakeup, int irq0, int irq1)
 601 {
 602         return add_numbered_child(chip, name, -1, pdata, pdata_len,
 603                 can_wakeup, irq0, irq1);
 604 }
 605
 606 static struct device *
 607 add_regulator_linked(int num, struct regulator_init_data *pdata,
 608                 struct regulator_consumer_supply *consumers,
 609                 unsigned num_consumers, unsigned long features)
 610 {
 611         unsigned sub_chip_id;
 612         /* regulator framework demands init_data ... */
 613         if (!pdata)
 614                 return NULL;
 615
 616         if (consumers) {
 617                 pdata->consumer_supplies = consumers;
 618                 pdata->num_consumer_supplies = num_consumers;
 619         }
 620
 621         pdata->driver_data = (void *)features;
 622
 623         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 624         sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
 625         return add_numbered_child(sub_chip_id, "twl_reg", num,
 626                 pdata, sizeof(*pdata), false, 0, 0);
 627 }
 628
 629 static struct device *
 630 add_regulator(int num, struct regulator_init_data *pdata,
 631                 unsigned long features)
 632 {
 633         return add_regulator_linked(num, pdata, NULL, 0, features);
 634 }
 635
 636 /*
 637  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 638  * for the PIH, and the next are for the PWR_INT SIH, since
 639  * that's how twl_init_irq() sets things up.
 640  */
 641
 642 static int
 643 add_children(struct twl4030_platform_data *pdata, unsigned long features)
 644 {
 645         struct device   *child;
 646         unsigned sub_chip_id;
 647
 648         if (twl_has_gpio() && pdata->gpio) {
 649                 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
 650                                 pdata->gpio, sizeof(*pdata->gpio),
 651                                 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
 652                 if (IS_ERR(child))
 653                         return PTR_ERR(child);
 654         }
 655
 656         if (twl_has_keypad() && pdata->keypad) {
 657                 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
 658                                 pdata->keypad, sizeof(*pdata->keypad),
 659                                 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
 660                 if (IS_ERR(child))
 661                         return PTR_ERR(child);
 662         }
 663
 664         if (twl_has_madc() && pdata->madc) {
 665                 child = add_child(2, "twl4030_madc",
 666                                 pdata->madc, sizeof(*pdata->madc),
 667                                 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
 668                 if (IS_ERR(child))
 669                         return PTR_ERR(child);
 670         }
 671
 672         if (twl_has_rtc()) {
 673                 /*
 674                  * REVISIT platform_data here currently might expose the
 675                  * "msecure" line ... but for now we just expect board
 676                  * setup to tell the chip "it's always ok to SET_TIME".
 677                  * Eventually, Linux might become more aware of such
 678                  * HW security concerns, and "least privilege".
 679                  */
 680                 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
 681                 child = add_child(sub_chip_id, "twl_rtc",
 682                                 NULL, 0,
 683                                 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
 684                 if (IS_ERR(child))
 685                         return PTR_ERR(child);
 686         }
 687
 688         if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
 689
 690                 static struct regulator_consumer_supply usb1v5 = {
 691                         .supply =       "usb1v5",
 692                 };
 693                 static struct regulator_consumer_supply usb1v8 = {
 694                         .supply =       "usb1v8",
 695                 };
 696                 static struct regulator_consumer_supply usb3v1 = {
 697                         .supply =       "usb3v1",
 698                 };
 699
 700         /* First add the regulators so that they can be used by transceiver */
 701                 if (twl_has_regulator()) {
 702                         /* this is a template that gets copied */
 703                         struct regulator_init_data usb_fixed = {
 704                                 .constraints.valid_modes_mask =
 705                                         REGULATOR_MODE_NORMAL
 706                                         | REGULATOR_MODE_STANDBY,
 707                                 .constraints.valid_ops_mask =
 708                                         REGULATOR_CHANGE_MODE
 709                                         | REGULATOR_CHANGE_STATUS,
 710                         };
 711
 712                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 713                                                       &usb_fixed, &usb1v5, 1,
 714                                                       features);
 715                         if (IS_ERR(child))
 716                                 return PTR_ERR(child);
 717
 718                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 719                                                       &usb_fixed, &usb1v8, 1,
 720                                                       features);
 721                         if (IS_ERR(child))
 722                                 return PTR_ERR(child);
 723
 724                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 725                                                       &usb_fixed, &usb3v1, 1,
 726                                                       features);
 727                         if (IS_ERR(child))
 728                                 return PTR_ERR(child);
 729
 730                 }
 731
 732                 child = add_child(0, "twl4030_usb",
 733                                 pdata->usb, sizeof(*pdata->usb),
 734                                 true,
 735                                 /* irq0 = USB_PRES, irq1 = USB */
 736                                 pdata->irq_base + USB_PRES_INTR_OFFSET,
 737                                 pdata->irq_base + USB_INTR_OFFSET);
 738
 739                 if (IS_ERR(child))
 740                         return PTR_ERR(child);
 741
 742                 /* we need to connect regulators to this transceiver */
 743                 if (twl_has_regulator() && child) {
 744                         usb1v5.dev = child;
 745                         usb1v8.dev = child;
 746                         usb3v1.dev = child;
 747                 }
 748         }
 749         if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
 750
 751                 static struct regulator_consumer_supply usb3v3;
 752                 int regulator;
 753
 754                 if (twl_has_regulator()) {
 755                         /* this is a template that gets copied */
 756                         struct regulator_init_data usb_fixed = {
 757                                 .constraints.valid_modes_mask =
 758                                         REGULATOR_MODE_NORMAL
 759                                         | REGULATOR_MODE_STANDBY,
 760                                 .constraints.valid_ops_mask =
 761                                         REGULATOR_CHANGE_MODE
 762                                         | REGULATOR_CHANGE_STATUS,
 763                         };
 764
 765                         if (features & TWL6025_SUBCLASS) {
 766                                 usb3v3.supply = "ldousb";
 767                                 regulator = TWL6025_REG_LDOUSB;
 768                         } else {
 769                                 usb3v3.supply = "vusb";
 770                                 regulator = TWL6030_REG_VUSB;
 771                         }
 772                         child = add_regulator_linked(regulator, &usb_fixed,
 773                                                         &usb3v3, 1,
 774                                                         features);
 775                         if (IS_ERR(child))
 776                                 return PTR_ERR(child);
 777                 }
 778
 779                 pdata->usb->features = features;
 780
 781                 child = add_child(0, "twl6030_usb",
 782                         pdata->usb, sizeof(*pdata->usb),
 783                         true,
 784                         /* irq1 = VBUS_PRES, irq0 = USB ID */
 785                         pdata->irq_base + USBOTG_INTR_OFFSET,
 786                         pdata->irq_base + USB_PRES_INTR_OFFSET);
 787
 788                 if (IS_ERR(child))
 789                         return PTR_ERR(child);
 790                 /* we need to connect regulators to this transceiver */
 791                 if (twl_has_regulator() && child)
 792                         usb3v3.dev = child;
 793         } else if (twl_has_regulator() && twl_class_is_6030()) {
 794                 if (features & TWL6025_SUBCLASS)
 795                         child = add_regulator(TWL6025_REG_LDOUSB,
 796                                                 pdata->ldousb, features);
 797                 else
 798                         child = add_regulator(TWL6030_REG_VUSB,
 799                                                 pdata->vusb, features);
 800
 801                         if (IS_ERR(child))
 802                                         return PTR_ERR(child);
 803         }
 804
 805         if (twl_has_watchdog() && twl_class_is_4030()) {
 806                 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
 807                 if (IS_ERR(child))
 808                         return PTR_ERR(child);
 809         }
 810
 811         if (twl_has_pwrbutton() && twl_class_is_4030()) {
 812                 child = add_child(1, "twl4030_pwrbutton",
 813                                 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
 814                 if (IS_ERR(child))
 815                         return PTR_ERR(child);
 816         }
 817
 818         if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
 819                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 820                 child = add_child(sub_chip_id, "twl4030-audio",
 821                                 pdata->audio, sizeof(*pdata->audio),
 822                                 false, 0, 0);
 823                 if (IS_ERR(child))
 824                         return PTR_ERR(child);
 825         }
 826
 827         if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
 828                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 829                 child = add_child(sub_chip_id, "twl6040",
 830                                 pdata->audio, sizeof(*pdata->audio),
 831                                 false, 0, 0);
 832                 if (IS_ERR(child))
 833                         return PTR_ERR(child);
 834         }
 835
 836         /* twl4030 regulators */
 837         if (twl_has_regulator() && twl_class_is_4030()) {
 838                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 839                                         features);
 840                 if (IS_ERR(child))
 841                         return PTR_ERR(child);
 842
 843                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 844                                         features);
 845                 if (IS_ERR(child))
 846                         return PTR_ERR(child);
 847
 848                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 849                                         features);
 850                 if (IS_ERR(child))
 851                         return PTR_ERR(child);
 852
 853                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 854                                         features);
 855                 if (IS_ERR(child))
 856                         return PTR_ERR(child);
 857
 858                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 859                                         features);
 860                 if (IS_ERR(child))
 861                         return PTR_ERR(child);
 862
 863                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 864                                         features);
 865                 if (IS_ERR(child))
 866                         return PTR_ERR(child);
 867
 868                 child = add_regulator((features & TWL4030_VAUX2)
 869                                         ? TWL4030_REG_VAUX2_4030
 870                                         : TWL4030_REG_VAUX2,
 871                                 pdata->vaux2, features);
 872                 if (IS_ERR(child))
 873                         return PTR_ERR(child);
 874
 875                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 876                                         features);
 877                 if (IS_ERR(child))
 878                         return PTR_ERR(child);
 879
 880                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 881                                         features);
 882                 if (IS_ERR(child))
 883                         return PTR_ERR(child);
 884
 885                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 886                                         features);
 887                 if (IS_ERR(child))
 888                         return PTR_ERR(child);
 889         }
 890
 891         /* maybe add LDOs that are omitted on cost-reduced parts */
 892         if (twl_has_regulator() && !(features & TPS_SUBSET)
 893           && twl_class_is_4030()) {
 894                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 895                                         features);
 896                 if (IS_ERR(child))
 897                         return PTR_ERR(child);
 898
 899                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 900                                         features);
 901                 if (IS_ERR(child))
 902                         return PTR_ERR(child);
 903
 904                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 905                                         features);
 906                 if (IS_ERR(child))
 907                         return PTR_ERR(child);
 908
 909                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 910                                         features);
 911                 if (IS_ERR(child))
 912                         return PTR_ERR(child);
 913
 914                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 915                                         features);
 916                 if (IS_ERR(child))
 917                         return PTR_ERR(child);
 918
 919                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 920                                         features);
 921                 if (IS_ERR(child))
 922                         return PTR_ERR(child);
 923         }
 924
 925         /* twl6030 regulators */
 926         if (twl_has_regulator() && twl_class_is_6030() &&
 927                         !(features & TWL6025_SUBCLASS)) {
 928                 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
 929                                         features);
 930                 if (IS_ERR(child))
 931                         return PTR_ERR(child);
 932
 933                 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
 934                                         features);
 935                 if (IS_ERR(child))
 936                         return PTR_ERR(child);
 937
 938                 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
 939                                         features);
 940                 if (IS_ERR(child))
 941                         return PTR_ERR(child);
 942
 943                 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
 944                                         features);
 945                 if (IS_ERR(child))
 946                         return PTR_ERR(child);
 947
 948                 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
 949                                         features);
 950                 if (IS_ERR(child))
 951                         return PTR_ERR(child);
 952
 953                 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
 954                                         features);
 955                 if (IS_ERR(child))
 956                         return PTR_ERR(child);
 957
 958                 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
 959                                         features);
 960                 if (IS_ERR(child))
 961                         return PTR_ERR(child);
 962
 963                 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
 964                                         features);
 965                 if (IS_ERR(child))
 966                         return PTR_ERR(child);
 967
 968                 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
 969                                         features);
 970                 if (IS_ERR(child))
 971                         return PTR_ERR(child);
 972         }
 973
 974         /* 6030 and 6025 share this regulator */
 975         if (twl_has_regulator() && twl_class_is_6030()) {
 976                 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
 977                                         features);
 978                 if (IS_ERR(child))
 979                         return PTR_ERR(child);
 980         }
 981
 982         /* twl6025 regulators */
 983         if (twl_has_regulator() && twl_class_is_6030() &&
 984                         (features & TWL6025_SUBCLASS)) {
 985                 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
 986                                         features);
 987                 if (IS_ERR(child))
 988                         return PTR_ERR(child);
 989
 990                 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
 991                                         features);
 992                 if (IS_ERR(child))
 993                         return PTR_ERR(child);
 994
 995                 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
 996                                         features);
 997                 if (IS_ERR(child))
 998                         return PTR_ERR(child);
 999
1000                 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1001                                         features);
1002                 if (IS_ERR(child))
1003                         return PTR_ERR(child);
1004
1005                 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1006                                         features);
1007                 if (IS_ERR(child))
1008                         return PTR_ERR(child);
1009
1010                 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1011                                         features);
1012                 if (IS_ERR(child))
1013                         return PTR_ERR(child);
1014
1015                 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1016                                         features);
1017                 if (IS_ERR(child))
1018                         return PTR_ERR(child);
1019
1020                 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1021                                         features);
1022                 if (IS_ERR(child))
1023                         return PTR_ERR(child);
1024
1025                 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1026                                         features);
1027                 if (IS_ERR(child))
1028                         return PTR_ERR(child);
1029
1030                 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1031                                         features);
1032                 if (IS_ERR(child))
1033                         return PTR_ERR(child);
1034
1035                 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1036                                         features);
1037                 if (IS_ERR(child))
1038                         return PTR_ERR(child);
1039
1040         }
1041
1042         if (twl_has_bci() && pdata->bci &&
1043                         !(features & (TPS_SUBSET | TWL5031))) {
1044                 child = add_child(3, "twl4030_bci",
1045                                 pdata->bci, sizeof(*pdata->bci), false,
1046                                 /* irq0 = CHG_PRES, irq1 = BCI */
1047                                 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1048                                 pdata->irq_base + BCI_INTR_OFFSET);
1049                 if (IS_ERR(child))
1050                         return PTR_ERR(child);
1051         }
1052
1053         return 0;
1054 }
1055
1056 /*----------------------------------------------------------------------*/
1057
1058 /*
1059  * These three functions initialize the on-chip clock framework,
1060  * letting it generate the right frequencies for USB, MADC, and
1061  * other purposes.
1062  */
1063 static inline int __init protect_pm_master(void)
1064 {
1065         int e = 0;
1066
1067         e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1068                         TWL4030_PM_MASTER_PROTECT_KEY);
1069         return e;
1070 }
1071
1072 static inline int __init unprotect_pm_master(void)
1073 {
1074         int e = 0;
1075
1076         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1077                         TWL4030_PM_MASTER_KEY_CFG1,
1078                         TWL4030_PM_MASTER_PROTECT_KEY);
1079         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1080                         TWL4030_PM_MASTER_KEY_CFG2,
1081                         TWL4030_PM_MASTER_PROTECT_KEY);
1082
1083         return e;
1084 }
1085
1086 static void clocks_init(struct device *dev,
1087                         struct twl4030_clock_init_data *clock)
1088 {
1089         int e = 0;
1090         struct clk *osc;
1091         u32 rate;
1092         u8 ctrl = HFCLK_FREQ_26_MHZ;
1093
1094 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1095         if (cpu_is_omap2430())
1096                 osc = clk_get(dev, "osc_ck");
1097         else
1098                 osc = clk_get(dev, "osc_sys_ck");
1099
1100         if (IS_ERR(osc)) {
1101                 printk(KERN_WARNING "Skipping twl internal clock init and "
1102                                 "using bootloader value (unknown osc rate)\n");
1103                 return;
1104         }
1105
1106         rate = clk_get_rate(osc);
1107         clk_put(osc);
1108
1109 #else
1110         /* REVISIT for non-OMAP systems, pass the clock rate from
1111          * board init code, using platform_data.
1112          */
1113         osc = ERR_PTR(-EIO);
1114
1115         printk(KERN_WARNING "Skipping twl internal clock init and "
1116                "using bootloader value (unknown osc rate)\n");
1117
1118         return;
1119 #endif
1120
1121         switch (rate) {
1122         case 19200000:
1123                 ctrl = HFCLK_FREQ_19p2_MHZ;
1124                 break;
1125         case 26000000:
1126                 ctrl = HFCLK_FREQ_26_MHZ;
1127                 break;
1128         case 38400000:
1129                 ctrl = HFCLK_FREQ_38p4_MHZ;
1130                 break;
1131         }
1132
1133         ctrl |= HIGH_PERF_SQ;
1134         if (clock && clock->ck32k_lowpwr_enable)
1135                 ctrl |= CK32K_LOWPWR_EN;
1136
1137         e |= unprotect_pm_master();
1138         /* effect->MADC+USB ck en */
1139         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1140         e |= protect_pm_master();
1141
1142         if (e < 0)
1143                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1144 }
1145
1146 /*----------------------------------------------------------------------*/
1147
1148 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1149 int twl4030_exit_irq(void);
1150 int twl4030_init_chip_irq(const char *chip);
1151 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1152 int twl6030_exit_irq(void);
1153
1154 static int twl_remove(struct i2c_client *client)
1155 {
1156         unsigned i;
1157         int status;
1158
1159         if (twl_class_is_4030())
1160                 status = twl4030_exit_irq();
1161         else
1162                 status = twl6030_exit_irq();
1163
1164         if (status < 0)
1165                 return status;
1166
1167         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1168                 struct twl_client       *twl = &twl_modules[i];
1169
1170                 if (twl->client && twl->client != client)
1171                         i2c_unregister_device(twl->client);
1172                 twl_modules[i].client = NULL;
1173         }
1174         inuse = false;
1175         return 0;
1176 }
1177
1178 /* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
1179 static int __devinit
1180 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1181 {
1182         int                             status;
1183         unsigned                        i;
1184         struct twl4030_platform_data    *pdata = client->dev.platform_data;
1185         u8 temp;
1186         int ret = 0;
1187
1188         if (!pdata) {
1189                 dev_dbg(&client->dev, "no platform data?\n");
1190                 return -EINVAL;
1191         }
1192
1193         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1194                 dev_dbg(&client->dev, "can't talk I2C?\n");
1195                 return -EIO;
1196         }
1197
1198         if (inuse) {
1199                 dev_dbg(&client->dev, "driver is already in use\n");
1200                 return -EBUSY;
1201         }
1202
1203         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1204                 struct twl_client       *twl = &twl_modules[i];
1205
1206                 twl->address = client->addr + i;
1207                 if (i == 0)
1208                         twl->client = client;
1209                 else {
1210                         twl->client = i2c_new_dummy(client->adapter,
1211                                         twl->address);
1212                         if (!twl->client) {
1213                                 dev_err(&client->dev,
1214                                         "can't attach client %d\n", i);
1215                                 status = -ENOMEM;
1216                                 goto fail;
1217                         }
1218                 }
1219                 mutex_init(&twl->xfer_lock);
1220         }
1221         inuse = true;
1222         if ((id->driver_data) & TWL6030_CLASS) {
1223                 twl_id = TWL6030_CLASS_ID;
1224                 twl_map = &twl6030_map[0];
1225         } else {
1226                 twl_id = TWL4030_CLASS_ID;
1227                 twl_map = &twl4030_map[0];
1228         }
1229
1230         /* setup clock framework */
1231         clocks_init(&client->dev, pdata->clock);
1232
1233         /* read TWL IDCODE Register */
1234         if (twl_id == TWL4030_CLASS_ID) {
1235                 ret = twl_read_idcode_register();
1236                 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1237         }
1238
1239         /* load power event scripts */
1240         if (twl_has_power() && pdata->power)
1241                 twl4030_power_init(pdata->power);
1242
1243         /* Maybe init the T2 Interrupt subsystem */
1244         if (client->irq
1245                         && pdata->irq_base
1246                         && pdata->irq_end > pdata->irq_base) {
1247                 if (twl_class_is_4030()) {
1248                         twl4030_init_chip_irq(id->name);
1249                         status = twl4030_init_irq(client->irq, pdata->irq_base,
1250                         pdata->irq_end);
1251                 } else {
1252                         status = twl6030_init_irq(client->irq, pdata->irq_base,
1253                         pdata->irq_end);
1254                 }
1255
1256                 if (status < 0)
1257                         goto fail;
1258         }
1259
1260         /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1261          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1262          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1263          */
1264
1265         if (twl_class_is_4030()) {
1266                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1267                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1268                 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1269                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1270         }
1271
1272         status = add_children(pdata, id->driver_data);
1273 fail:
1274         if (status < 0)
1275                 twl_remove(client);
1276         return status;
1277 }
1278
1279 static const struct i2c_device_id twl_ids[] = {
1280         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1281         { "twl5030", 0 },               /* T2 updated */
1282         { "twl5031", TWL5031 },         /* TWL5030 updated */
1283         { "tps65950", 0 },              /* catalog version of twl5030 */
1284         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1285         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1286         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1287                                            and vibrator. Charger in USB module*/
1288         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1289         { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1290         { /* end of list */ },
1291 };
1292 MODULE_DEVICE_TABLE(i2c, twl_ids);
1293
1294 /* One Client Driver , 4 Clients */
1295 static struct i2c_driver twl_driver = {
1296         .driver.name    = DRIVER_NAME,
1297         .id_table       = twl_ids,
1298         .probe          = twl_probe,
1299         .remove         = twl_remove,
1300 };
1301
1302 static int __init twl_init(void)
1303 {
1304         return i2c_add_driver(&twl_driver);
1305 }
1306 subsys_initcall(twl_init);
1307
1308 static void __exit twl_exit(void)
1309 {
1310         i2c_del_driver(&twl_driver);
1311 }
1312 module_exit(twl_exit);
1313
1314 MODULE_AUTHOR("Texas Instruments, Inc.");
1315 MODULE_DESCRIPTION("I2C Core interface for TWL");
1316 MODULE_LICENSE("GPL");