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/module.h>
  34 #include <linux/platform_device.h>
  35 #include <linux/clk.h>
  36 #include <linux/err.h>
  37 #include <linux/device.h>
  38 #include <linux/of.h>
  39 #include <linux/of_irq.h>
  40 #include <linux/of_platform.h>
  41 #include <linux/irqdomain.h>
  42
  43 #include <linux/regulator/machine.h>
  44
  45 #include <linux/i2c.h>
  46 #include <linux/i2c/twl.h>
  47
  48 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
  49 #include <plat/cpu.h>
  50 #endif
  51
  52 /*
  53  * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  54  * Management and System Companion Device" chips originally designed for
  55  * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  56  * often at around 3 Mbit/sec, including for interrupt handling.
  57  *
  58  * This driver core provides genirq support for the interrupts emitted,
  59  * by the various modules, and exports register access primitives.
  60  *
  61  * FIXME this driver currently requires use of the first interrupt line
  62  * (and associated registers).
  63  */
  64
  65 #define DRIVER_NAME                     "twl"
  66
  67 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
  68 #define twl_has_keypad()        true
  69 #else
  70 #define twl_has_keypad()        false
  71 #endif
  72
  73 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
  74 #define twl_has_gpio()  true
  75 #else
  76 #define twl_has_gpio()  false
  77 #endif
  78
  79 #if defined(CONFIG_REGULATOR_TWL4030) \
  80         || defined(CONFIG_REGULATOR_TWL4030_MODULE)
  81 #define twl_has_regulator()     true
  82 #else
  83 #define twl_has_regulator()     false
  84 #endif
  85
  86 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
  87 #define twl_has_madc()  true
  88 #else
  89 #define twl_has_madc()  false
  90 #endif
  91
  92 #ifdef CONFIG_TWL4030_POWER
  93 #define twl_has_power()        true
  94 #else
  95 #define twl_has_power()        false
  96 #endif
  97
  98 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
  99 #define twl_has_rtc()   true
 100 #else
 101 #define twl_has_rtc()   false
 102 #endif
 103
 104 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
 105         defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
 106 #define twl_has_usb()   true
 107 #else
 108 #define twl_has_usb()   false
 109 #endif
 110
 111 #if defined(CONFIG_TWL4030_WATCHDOG) || \
 112         defined(CONFIG_TWL4030_WATCHDOG_MODULE)
 113 #define twl_has_watchdog()        true
 114 #else
 115 #define twl_has_watchdog()        false
 116 #endif
 117
 118 #if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\
 119         defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
 120 #define twl_has_codec() true
 121 #else
 122 #define twl_has_codec() false
 123 #endif
 124
 125 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
 126 #define twl_has_bci()   true
 127 #else
 128 #define twl_has_bci()   false
 129 #endif
 130
 131 /* Triton Core internal information (BEGIN) */
 132
 133 /* Last - for index max*/
 134 #define TWL4030_MODULE_LAST             TWL4030_MODULE_SECURED_REG
 135
 136 #define TWL_NUM_SLAVES          4
 137
 138 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
 139         || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
 140 #define twl_has_pwrbutton()     true
 141 #else
 142 #define twl_has_pwrbutton()     false
 143 #endif
 144
 145 #define SUB_CHIP_ID0 0
 146 #define SUB_CHIP_ID1 1
 147 #define SUB_CHIP_ID2 2
 148 #define SUB_CHIP_ID3 3
 149
 150 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
 151
 152 #define TWL4030_NR_IRQS    34 /* core:8, power:8, gpio: 18 */
 153 #define TWL6030_NR_IRQS    20
 154
 155 /* Base Address defns for twl4030_map[] */
 156
 157 /* subchip/slave 0 - USB ID */
 158 #define TWL4030_BASEADD_USB             0x0000
 159
 160 /* subchip/slave 1 - AUD ID */
 161 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
 162 #define TWL4030_BASEADD_GPIO            0x0098
 163 #define TWL4030_BASEADD_INTBR           0x0085
 164 #define TWL4030_BASEADD_PIH             0x0080
 165 #define TWL4030_BASEADD_TEST            0x004C
 166
 167 /* subchip/slave 2 - AUX ID */
 168 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
 169 #define TWL4030_BASEADD_LED             0x00EE
 170 #define TWL4030_BASEADD_MADC            0x0000
 171 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
 172 #define TWL4030_BASEADD_PRECHARGE       0x00AA
 173 #define TWL4030_BASEADD_PWM0            0x00F8
 174 #define TWL4030_BASEADD_PWM1            0x00FB
 175 #define TWL4030_BASEADD_PWMA            0x00EF
 176 #define TWL4030_BASEADD_PWMB            0x00F1
 177 #define TWL4030_BASEADD_KEYPAD          0x00D2
 178
 179 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
 180 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
 181                                                   one */
 182
 183 /* subchip/slave 3 - POWER ID */
 184 #define TWL4030_BASEADD_BACKUP          0x0014
 185 #define TWL4030_BASEADD_INT             0x002E
 186 #define TWL4030_BASEADD_PM_MASTER       0x0036
 187 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
 188 #define TWL4030_BASEADD_RTC             0x001C
 189 #define TWL4030_BASEADD_SECURED_REG     0x0000
 190
 191 /* Triton Core internal information (END) */
 192
 193
 194 /* subchip/slave 0 0x48 - POWER */
 195 #define TWL6030_BASEADD_RTC             0x0000
 196 #define TWL6030_BASEADD_MEM             0x0017
 197 #define TWL6030_BASEADD_PM_MASTER       0x001F
 198 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 199 #define TWL6030_BASEADD_PM_MISC         0x00E2
 200 #define TWL6030_BASEADD_PM_PUPD         0x00F0
 201
 202 /* subchip/slave 1 0x49 - FEATURE */
 203 #define TWL6030_BASEADD_USB             0x0000
 204 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
 205 #define TWL6030_BASEADD_AUX             0x0090
 206 #define TWL6030_BASEADD_PWM             0x00BA
 207 #define TWL6030_BASEADD_GASGAUGE        0x00C0
 208 #define TWL6030_BASEADD_PIH             0x00D0
 209 #define TWL6030_BASEADD_CHARGER         0x00E0
 210 #define TWL6025_BASEADD_CHARGER         0x00DA
 211
 212 /* subchip/slave 2 0x4A - DFT */
 213 #define TWL6030_BASEADD_DIEID           0x00C0
 214
 215 /* subchip/slave 3 0x4B - AUDIO */
 216 #define TWL6030_BASEADD_AUDIO           0x0000
 217 #define TWL6030_BASEADD_RSV             0x0000
 218 #define TWL6030_BASEADD_ZERO            0x0000
 219
 220 /* Few power values */
 221 #define R_CFG_BOOT                      0x05
 222
 223 /* some fields in R_CFG_BOOT */
 224 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 225 #define HFCLK_FREQ_26_MHZ               (2 << 0)
 226 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 227 #define HIGH_PERF_SQ                    (1 << 3)
 228 #define CK32K_LOWPWR_EN                 (1 << 7)
 229
 230
 231 /* chip-specific feature flags, for i2c_device_id.driver_data */
 232 #define TWL4030_VAUX2           BIT(0)  /* pre-5030 voltage ranges */
 233 #define TPS_SUBSET              BIT(1)  /* tps659[23]0 have fewer LDOs */
 234 #define TWL5031                 BIT(2)  /* twl5031 has different registers */
 235 #define TWL6030_CLASS           BIT(3)  /* TWL6030 class */
 236
 237 /*----------------------------------------------------------------------*/
 238
 239 /* is driver active, bound to a chip? */
 240 static bool inuse;
 241
 242 /* TWL IDCODE Register value */
 243 static u32 twl_idcode;
 244
 245 static unsigned int twl_id;
 246 unsigned int twl_rev(void)
 247 {
 248         return twl_id;
 249 }
 250 EXPORT_SYMBOL(twl_rev);
 251
 252 /* Structure for each TWL4030/TWL6030 Slave */
 253 struct twl_client {
 254         struct i2c_client *client;
 255         u8 address;
 256
 257         /* max numb of i2c_msg required is for read =2 */
 258         struct i2c_msg xfer_msg[2];
 259
 260         /* To lock access to xfer_msg */
 261         struct mutex xfer_lock;
 262 };
 263
 264 static struct twl_client twl_modules[TWL_NUM_SLAVES];
 265
 266 /* mapping the module id to slave id and base address */
 267 struct twl_mapping {
 268         unsigned char sid;      /* Slave ID */
 269         unsigned char base;     /* base address */
 270 };
 271 static struct twl_mapping *twl_map;
 272
 273 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
 274         /*
 275          * NOTE:  don't change this table without updating the
 276          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 277          * so they continue to match the order in this table.
 278          */
 279
 280         { 0, TWL4030_BASEADD_USB },
 281
 282         { 1, TWL4030_BASEADD_AUDIO_VOICE },
 283         { 1, TWL4030_BASEADD_GPIO },
 284         { 1, TWL4030_BASEADD_INTBR },
 285         { 1, TWL4030_BASEADD_PIH },
 286         { 1, TWL4030_BASEADD_TEST },
 287
 288         { 2, TWL4030_BASEADD_KEYPAD },
 289         { 2, TWL4030_BASEADD_MADC },
 290         { 2, TWL4030_BASEADD_INTERRUPTS },
 291         { 2, TWL4030_BASEADD_LED },
 292         { 2, TWL4030_BASEADD_MAIN_CHARGE },
 293         { 2, TWL4030_BASEADD_PRECHARGE },
 294         { 2, TWL4030_BASEADD_PWM0 },
 295         { 2, TWL4030_BASEADD_PWM1 },
 296         { 2, TWL4030_BASEADD_PWMA },
 297         { 2, TWL4030_BASEADD_PWMB },
 298         { 2, TWL5031_BASEADD_ACCESSORY },
 299         { 2, TWL5031_BASEADD_INTERRUPTS },
 300
 301         { 3, TWL4030_BASEADD_BACKUP },
 302         { 3, TWL4030_BASEADD_INT },
 303         { 3, TWL4030_BASEADD_PM_MASTER },
 304         { 3, TWL4030_BASEADD_PM_RECEIVER },
 305         { 3, TWL4030_BASEADD_RTC },
 306         { 3, TWL4030_BASEADD_SECURED_REG },
 307 };
 308
 309 static struct twl_mapping twl6030_map[] = {
 310         /*
 311          * NOTE:  don't change this table without updating the
 312          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 313          * so they continue to match the order in this table.
 314          */
 315         { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
 316         { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
 317         { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
 318         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 319         { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
 320
 321         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 322         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 323         { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
 324         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 325         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 326
 327         { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
 328         { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
 329         { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
 330         { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
 331         { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
 332
 333         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 334         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 335         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 336         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 337         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 338         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
 339         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
 340
 341         { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
 342         { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
 343         { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
 344 };
 345
 346 /*----------------------------------------------------------------------*/
 347
 348 /* Exported Functions */
 349
 350 /**
 351  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 352  * @mod_no: module number
 353  * @value: an array of num_bytes+1 containing data to write
 354  * @reg: register address (just offset will do)
 355  * @num_bytes: number of bytes to transfer
 356  *
 357  * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
 358  * valid data starts at Offset 1.
 359  *
 360  * Returns the result of operation - 0 is success
 361  */
 362 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 363 {
 364         int ret;
 365         int sid;
 366         struct twl_client *twl;
 367         struct i2c_msg *msg;
 368
 369         if (unlikely(mod_no > TWL_MODULE_LAST)) {
 370                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 371                 return -EPERM;
 372         }
 373         if (unlikely(!inuse)) {
 374                 pr_err("%s: not initialized\n", DRIVER_NAME);
 375                 return -EPERM;
 376         }
 377         sid = twl_map[mod_no].sid;
 378         twl = &twl_modules[sid];
 379
 380         mutex_lock(&twl->xfer_lock);
 381         /*
 382          * [MSG1]: fill the register address data
 383          * fill the data Tx buffer
 384          */
 385         msg = &twl->xfer_msg[0];
 386         msg->addr = twl->address;
 387         msg->len = num_bytes + 1;
 388         msg->flags = 0;
 389         msg->buf = value;
 390         /* over write the first byte of buffer with the register address */
 391         *value = twl_map[mod_no].base + reg;
 392         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
 393         mutex_unlock(&twl->xfer_lock);
 394
 395         /* i2c_transfer returns number of messages transferred */
 396         if (ret != 1) {
 397                 pr_err("%s: i2c_write failed to transfer all messages\n",
 398                         DRIVER_NAME);
 399                 if (ret < 0)
 400                         return ret;
 401                 else
 402                         return -EIO;
 403         } else {
 404                 return 0;
 405         }
 406 }
 407 EXPORT_SYMBOL(twl_i2c_write);
 408
 409 /**
 410  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 411  * @mod_no: module number
 412  * @value: an array of num_bytes containing data to be read
 413  * @reg: register address (just offset will do)
 414  * @num_bytes: number of bytes to transfer
 415  *
 416  * Returns result of operation - num_bytes is success else failure.
 417  */
 418 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 419 {
 420         int ret;
 421         u8 val;
 422         int sid;
 423         struct twl_client *twl;
 424         struct i2c_msg *msg;
 425
 426         if (unlikely(mod_no > TWL_MODULE_LAST)) {
 427                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 428                 return -EPERM;
 429         }
 430         if (unlikely(!inuse)) {
 431                 pr_err("%s: not initialized\n", DRIVER_NAME);
 432                 return -EPERM;
 433         }
 434         sid = twl_map[mod_no].sid;
 435         twl = &twl_modules[sid];
 436
 437         mutex_lock(&twl->xfer_lock);
 438         /* [MSG1] fill the register address data */
 439         msg = &twl->xfer_msg[0];
 440         msg->addr = twl->address;
 441         msg->len = 1;
 442         msg->flags = 0; /* Read the register value */
 443         val = twl_map[mod_no].base + reg;
 444         msg->buf = &val;
 445         /* [MSG2] fill the data rx buffer */
 446         msg = &twl->xfer_msg[1];
 447         msg->addr = twl->address;
 448         msg->flags = I2C_M_RD;  /* Read the register value */
 449         msg->len = num_bytes;   /* only n bytes */
 450         msg->buf = value;
 451         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
 452         mutex_unlock(&twl->xfer_lock);
 453
 454         /* i2c_transfer returns number of messages transferred */
 455         if (ret != 2) {
 456                 pr_err("%s: i2c_read failed to transfer all messages\n",
 457                         DRIVER_NAME);
 458                 if (ret < 0)
 459                         return ret;
 460                 else
 461                         return -EIO;
 462         } else {
 463                 return 0;
 464         }
 465 }
 466 EXPORT_SYMBOL(twl_i2c_read);
 467
 468 /**
 469  * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
 470  * @mod_no: module number
 471  * @value: the value to be written 8 bit
 472  * @reg: register address (just offset will do)
 473  *
 474  * Returns result of operation - 0 is success
 475  */
 476 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
 477 {
 478
 479         /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
 480         u8 temp_buffer[2] = { 0 };
 481         /* offset 1 contains the data */
 482         temp_buffer[1] = value;
 483         return twl_i2c_write(mod_no, temp_buffer, reg, 1);
 484 }
 485 EXPORT_SYMBOL(twl_i2c_write_u8);
 486
 487 /**
 488  * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
 489  * @mod_no: module number
 490  * @value: the value read 8 bit
 491  * @reg: register address (just offset will do)
 492  *
 493  * Returns result of operation - 0 is success
 494  */
 495 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
 496 {
 497         return twl_i2c_read(mod_no, value, reg, 1);
 498 }
 499 EXPORT_SYMBOL(twl_i2c_read_u8);
 500
 501 /*----------------------------------------------------------------------*/
 502
 503 /**
 504  * twl_read_idcode_register - API to read the IDCODE register.
 505  *
 506  * Unlocks the IDCODE register and read the 32 bit value.
 507  */
 508 static int twl_read_idcode_register(void)
 509 {
 510         int err;
 511
 512         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 513                                                 REG_UNLOCK_TEST_REG);
 514         if (err) {
 515                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 516                 goto fail;
 517         }
 518
 519         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
 520                                                 REG_IDCODE_7_0, 4);
 521         if (err) {
 522                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 523                 goto fail;
 524         }
 525
 526         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 527         if (err)
 528                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 529 fail:
 530         return err;
 531 }
 532
 533 /**
 534  * twl_get_type - API to get TWL Si type.
 535  *
 536  * Api to get the TWL Si type from IDCODE value.
 537  */
 538 int twl_get_type(void)
 539 {
 540         return TWL_SIL_TYPE(twl_idcode);
 541 }
 542 EXPORT_SYMBOL_GPL(twl_get_type);
 543
 544 /**
 545  * twl_get_version - API to get TWL Si version.
 546  *
 547  * Api to get the TWL Si version from IDCODE value.
 548  */
 549 int twl_get_version(void)
 550 {
 551         return TWL_SIL_REV(twl_idcode);
 552 }
 553 EXPORT_SYMBOL_GPL(twl_get_version);
 554
 555 static struct device *
 556 add_numbered_child(unsigned chip, const char *name, int num,
 557                 void *pdata, unsigned pdata_len,
 558                 bool can_wakeup, int irq0, int irq1)
 559 {
 560         struct platform_device  *pdev;
 561         struct twl_client       *twl = &twl_modules[chip];
 562         int                     status;
 563
 564         pdev = platform_device_alloc(name, num);
 565         if (!pdev) {
 566                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
 567                 status = -ENOMEM;
 568                 goto err;
 569         }
 570
 571         device_init_wakeup(&pdev->dev, can_wakeup);
 572         pdev->dev.parent = &twl->client->dev;
 573
 574         if (pdata) {
 575                 status = platform_device_add_data(pdev, pdata, pdata_len);
 576                 if (status < 0) {
 577                         dev_dbg(&pdev->dev, "can't add platform_data\n");
 578                         goto err;
 579                 }
 580         }
 581
 582         if (irq0) {
 583                 struct resource r[2] = {
 584                         { .start = irq0, .flags = IORESOURCE_IRQ, },
 585                         { .start = irq1, .flags = IORESOURCE_IRQ, },
 586                 };
 587
 588                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 589                 if (status < 0) {
 590                         dev_dbg(&pdev->dev, "can't add irqs\n");
 591                         goto err;
 592                 }
 593         }
 594
 595         status = platform_device_add(pdev);
 596
 597 err:
 598         if (status < 0) {
 599                 platform_device_put(pdev);
 600                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
 601                 return ERR_PTR(status);
 602         }
 603         return &pdev->dev;
 604 }
 605
 606 static inline struct device *add_child(unsigned chip, const char *name,
 607                 void *pdata, unsigned pdata_len,
 608                 bool can_wakeup, int irq0, int irq1)
 609 {
 610         return add_numbered_child(chip, name, -1, pdata, pdata_len,
 611                 can_wakeup, irq0, irq1);
 612 }
 613
 614 static struct device *
 615 add_regulator_linked(int num, struct regulator_init_data *pdata,
 616                 struct regulator_consumer_supply *consumers,
 617                 unsigned num_consumers, unsigned long features)
 618 {
 619         unsigned sub_chip_id;
 620         /* regulator framework demands init_data ... */
 621         if (!pdata)
 622                 return NULL;
 623
 624         if (consumers) {
 625                 pdata->consumer_supplies = consumers;
 626                 pdata->num_consumer_supplies = num_consumers;
 627         }
 628
 629         pdata->driver_data = (void *)features;
 630
 631         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 632         sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
 633         return add_numbered_child(sub_chip_id, "twl_reg", num,
 634                 pdata, sizeof(*pdata), false, 0, 0);
 635 }
 636
 637 static struct device *
 638 add_regulator(int num, struct regulator_init_data *pdata,
 639                 unsigned long features)
 640 {
 641         return add_regulator_linked(num, pdata, NULL, 0, features);
 642 }
 643
 644 /*
 645  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 646  * for the PIH, and the next are for the PWR_INT SIH, since
 647  * that's how twl_init_irq() sets things up.
 648  */
 649
 650 static int
 651 add_children(struct twl4030_platform_data *pdata, unsigned long features)
 652 {
 653         struct device   *child;
 654         unsigned sub_chip_id;
 655
 656         if (twl_has_gpio() && pdata->gpio) {
 657                 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
 658                                 pdata->gpio, sizeof(*pdata->gpio),
 659                                 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
 660                 if (IS_ERR(child))
 661                         return PTR_ERR(child);
 662         }
 663
 664         if (twl_has_keypad() && pdata->keypad) {
 665                 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
 666                                 pdata->keypad, sizeof(*pdata->keypad),
 667                                 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
 668                 if (IS_ERR(child))
 669                         return PTR_ERR(child);
 670         }
 671
 672         if (twl_has_madc() && pdata->madc) {
 673                 child = add_child(2, "twl4030_madc",
 674                                 pdata->madc, sizeof(*pdata->madc),
 675                                 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
 676                 if (IS_ERR(child))
 677                         return PTR_ERR(child);
 678         }
 679
 680         if (twl_has_rtc()) {
 681                 /*
 682                  * REVISIT platform_data here currently might expose the
 683                  * "msecure" line ... but for now we just expect board
 684                  * setup to tell the chip "it's always ok to SET_TIME".
 685                  * Eventually, Linux might become more aware of such
 686                  * HW security concerns, and "least privilege".
 687                  */
 688                 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
 689                 child = add_child(sub_chip_id, "twl_rtc",
 690                                 NULL, 0,
 691                                 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
 692                 if (IS_ERR(child))
 693                         return PTR_ERR(child);
 694         }
 695
 696         if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
 697
 698                 static struct regulator_consumer_supply usb1v5 = {
 699                         .supply =       "usb1v5",
 700                 };
 701                 static struct regulator_consumer_supply usb1v8 = {
 702                         .supply =       "usb1v8",
 703                 };
 704                 static struct regulator_consumer_supply usb3v1 = {
 705                         .supply =       "usb3v1",
 706                 };
 707
 708         /* First add the regulators so that they can be used by transceiver */
 709                 if (twl_has_regulator()) {
 710                         /* this is a template that gets copied */
 711                         struct regulator_init_data usb_fixed = {
 712                                 .constraints.valid_modes_mask =
 713                                         REGULATOR_MODE_NORMAL
 714                                         | REGULATOR_MODE_STANDBY,
 715                                 .constraints.valid_ops_mask =
 716                                         REGULATOR_CHANGE_MODE
 717                                         | REGULATOR_CHANGE_STATUS,
 718                         };
 719
 720                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 721                                                       &usb_fixed, &usb1v5, 1,
 722                                                       features);
 723                         if (IS_ERR(child))
 724                                 return PTR_ERR(child);
 725
 726                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 727                                                       &usb_fixed, &usb1v8, 1,
 728                                                       features);
 729                         if (IS_ERR(child))
 730                                 return PTR_ERR(child);
 731
 732                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 733                                                       &usb_fixed, &usb3v1, 1,
 734                                                       features);
 735                         if (IS_ERR(child))
 736                                 return PTR_ERR(child);
 737
 738                 }
 739
 740                 child = add_child(0, "twl4030_usb",
 741                                 pdata->usb, sizeof(*pdata->usb),
 742                                 true,
 743                                 /* irq0 = USB_PRES, irq1 = USB */
 744                                 pdata->irq_base + USB_PRES_INTR_OFFSET,
 745                                 pdata->irq_base + USB_INTR_OFFSET);
 746
 747                 if (IS_ERR(child))
 748                         return PTR_ERR(child);
 749
 750                 /* we need to connect regulators to this transceiver */
 751                 if (twl_has_regulator() && child) {
 752                         usb1v5.dev = child;
 753                         usb1v8.dev = child;
 754                         usb3v1.dev = child;
 755                 }
 756         }
 757         if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
 758
 759                 static struct regulator_consumer_supply usb3v3;
 760                 int regulator;
 761
 762                 if (twl_has_regulator()) {
 763                         /* this is a template that gets copied */
 764                         struct regulator_init_data usb_fixed = {
 765                                 .constraints.valid_modes_mask =
 766                                         REGULATOR_MODE_NORMAL
 767                                         | REGULATOR_MODE_STANDBY,
 768                                 .constraints.valid_ops_mask =
 769                                         REGULATOR_CHANGE_MODE
 770                                         | REGULATOR_CHANGE_STATUS,
 771                         };
 772
 773                         if (features & TWL6025_SUBCLASS) {
 774                                 usb3v3.supply = "ldousb";
 775                                 regulator = TWL6025_REG_LDOUSB;
 776                         } else {
 777                                 usb3v3.supply = "vusb";
 778                                 regulator = TWL6030_REG_VUSB;
 779                         }
 780                         child = add_regulator_linked(regulator, &usb_fixed,
 781                                                         &usb3v3, 1,
 782                                                         features);
 783                         if (IS_ERR(child))
 784                                 return PTR_ERR(child);
 785                 }
 786
 787                 pdata->usb->features = features;
 788
 789                 child = add_child(0, "twl6030_usb",
 790                         pdata->usb, sizeof(*pdata->usb),
 791                         true,
 792                         /* irq1 = VBUS_PRES, irq0 = USB ID */
 793                         pdata->irq_base + USBOTG_INTR_OFFSET,
 794                         pdata->irq_base + USB_PRES_INTR_OFFSET);
 795
 796                 if (IS_ERR(child))
 797                         return PTR_ERR(child);
 798                 /* we need to connect regulators to this transceiver */
 799                 if (twl_has_regulator() && child)
 800                         usb3v3.dev = child;
 801         } else if (twl_has_regulator() && twl_class_is_6030()) {
 802                 if (features & TWL6025_SUBCLASS)
 803                         child = add_regulator(TWL6025_REG_LDOUSB,
 804                                                 pdata->ldousb, features);
 805                 else
 806                         child = add_regulator(TWL6030_REG_VUSB,
 807                                                 pdata->vusb, features);
 808
 809                         if (IS_ERR(child))
 810                                         return PTR_ERR(child);
 811         }
 812
 813         if (twl_has_watchdog() && twl_class_is_4030()) {
 814                 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
 815                 if (IS_ERR(child))
 816                         return PTR_ERR(child);
 817         }
 818
 819         if (twl_has_pwrbutton() && twl_class_is_4030()) {
 820                 child = add_child(1, "twl4030_pwrbutton",
 821                                 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
 822                 if (IS_ERR(child))
 823                         return PTR_ERR(child);
 824         }
 825
 826         if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
 827                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 828                 child = add_child(sub_chip_id, "twl4030-audio",
 829                                 pdata->audio, sizeof(*pdata->audio),
 830                                 false, 0, 0);
 831                 if (IS_ERR(child))
 832                         return PTR_ERR(child);
 833         }
 834
 835         if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
 836                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 837                 child = add_child(sub_chip_id, "twl6040",
 838                                 pdata->audio, sizeof(*pdata->audio),
 839                                 false, 0, 0);
 840                 if (IS_ERR(child))
 841                         return PTR_ERR(child);
 842         }
 843
 844         /* twl4030 regulators */
 845         if (twl_has_regulator() && twl_class_is_4030()) {
 846                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 847                                         features);
 848                 if (IS_ERR(child))
 849                         return PTR_ERR(child);
 850
 851                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 852                                         features);
 853                 if (IS_ERR(child))
 854                         return PTR_ERR(child);
 855
 856                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 857                                         features);
 858                 if (IS_ERR(child))
 859                         return PTR_ERR(child);
 860
 861                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 862                                         features);
 863                 if (IS_ERR(child))
 864                         return PTR_ERR(child);
 865
 866                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 867                                         features);
 868                 if (IS_ERR(child))
 869                         return PTR_ERR(child);
 870
 871                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 872                                         features);
 873                 if (IS_ERR(child))
 874                         return PTR_ERR(child);
 875
 876                 child = add_regulator((features & TWL4030_VAUX2)
 877                                         ? TWL4030_REG_VAUX2_4030
 878                                         : TWL4030_REG_VAUX2,
 879                                 pdata->vaux2, features);
 880                 if (IS_ERR(child))
 881                         return PTR_ERR(child);
 882
 883                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 884                                         features);
 885                 if (IS_ERR(child))
 886                         return PTR_ERR(child);
 887
 888                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 889                                         features);
 890                 if (IS_ERR(child))
 891                         return PTR_ERR(child);
 892
 893                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 894                                         features);
 895                 if (IS_ERR(child))
 896                         return PTR_ERR(child);
 897         }
 898
 899         /* maybe add LDOs that are omitted on cost-reduced parts */
 900         if (twl_has_regulator() && !(features & TPS_SUBSET)
 901           && twl_class_is_4030()) {
 902                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 903                                         features);
 904                 if (IS_ERR(child))
 905                         return PTR_ERR(child);
 906
 907                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 908                                         features);
 909                 if (IS_ERR(child))
 910                         return PTR_ERR(child);
 911
 912                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 913                                         features);
 914                 if (IS_ERR(child))
 915                         return PTR_ERR(child);
 916
 917                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 918                                         features);
 919                 if (IS_ERR(child))
 920                         return PTR_ERR(child);
 921
 922                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 923                                         features);
 924                 if (IS_ERR(child))
 925                         return PTR_ERR(child);
 926
 927                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 928                                         features);
 929                 if (IS_ERR(child))
 930                         return PTR_ERR(child);
 931         }
 932
 933         /* twl6030 regulators */
 934         if (twl_has_regulator() && twl_class_is_6030() &&
 935                         !(features & TWL6025_SUBCLASS)) {
 936                 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
 937                                         features);
 938                 if (IS_ERR(child))
 939                         return PTR_ERR(child);
 940
 941                 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
 942                                         features);
 943                 if (IS_ERR(child))
 944                         return PTR_ERR(child);
 945
 946                 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
 947                                         features);
 948                 if (IS_ERR(child))
 949                         return PTR_ERR(child);
 950
 951                 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
 952                                         features);
 953                 if (IS_ERR(child))
 954                         return PTR_ERR(child);
 955
 956                 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
 957                                         features);
 958                 if (IS_ERR(child))
 959                         return PTR_ERR(child);
 960
 961                 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
 962                                         features);
 963                 if (IS_ERR(child))
 964                         return PTR_ERR(child);
 965
 966                 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
 967                                         features);
 968                 if (IS_ERR(child))
 969                         return PTR_ERR(child);
 970
 971                 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
 972                                         features);
 973                 if (IS_ERR(child))
 974                         return PTR_ERR(child);
 975
 976                 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
 977                                         features);
 978                 if (IS_ERR(child))
 979                         return PTR_ERR(child);
 980         }
 981
 982         /* 6030 and 6025 share this regulator */
 983         if (twl_has_regulator() && twl_class_is_6030()) {
 984                 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
 985                                         features);
 986                 if (IS_ERR(child))
 987                         return PTR_ERR(child);
 988         }
 989
 990         /* twl6025 regulators */
 991         if (twl_has_regulator() && twl_class_is_6030() &&
 992                         (features & TWL6025_SUBCLASS)) {
 993                 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
 994                                         features);
 995                 if (IS_ERR(child))
 996                         return PTR_ERR(child);
 997
 998                 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
 999                                         features);
1000                 if (IS_ERR(child))
1001                         return PTR_ERR(child);
1002
1003                 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1004                                         features);
1005                 if (IS_ERR(child))
1006                         return PTR_ERR(child);
1007
1008                 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1009                                         features);
1010                 if (IS_ERR(child))
1011                         return PTR_ERR(child);
1012
1013                 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1014                                         features);
1015                 if (IS_ERR(child))
1016                         return PTR_ERR(child);
1017
1018                 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1019                                         features);
1020                 if (IS_ERR(child))
1021                         return PTR_ERR(child);
1022
1023                 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1024                                         features);
1025                 if (IS_ERR(child))
1026                         return PTR_ERR(child);
1027
1028                 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1029                                         features);
1030                 if (IS_ERR(child))
1031                         return PTR_ERR(child);
1032
1033                 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1034                                         features);
1035                 if (IS_ERR(child))
1036                         return PTR_ERR(child);
1037
1038                 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1039                                         features);
1040                 if (IS_ERR(child))
1041                         return PTR_ERR(child);
1042
1043                 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1044                                         features);
1045                 if (IS_ERR(child))
1046                         return PTR_ERR(child);
1047
1048         }
1049
1050         if (twl_has_bci() && pdata->bci &&
1051                         !(features & (TPS_SUBSET | TWL5031))) {
1052                 child = add_child(3, "twl4030_bci",
1053                                 pdata->bci, sizeof(*pdata->bci), false,
1054                                 /* irq0 = CHG_PRES, irq1 = BCI */
1055                                 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1056                                 pdata->irq_base + BCI_INTR_OFFSET);
1057                 if (IS_ERR(child))
1058                         return PTR_ERR(child);
1059         }
1060
1061         return 0;
1062 }
1063
1064 /*----------------------------------------------------------------------*/
1065
1066 /*
1067  * These three functions initialize the on-chip clock framework,
1068  * letting it generate the right frequencies for USB, MADC, and
1069  * other purposes.
1070  */
1071 static inline int __init protect_pm_master(void)
1072 {
1073         int e = 0;
1074
1075         e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1076                         TWL4030_PM_MASTER_PROTECT_KEY);
1077         return e;
1078 }
1079
1080 static inline int __init unprotect_pm_master(void)
1081 {
1082         int e = 0;
1083
1084         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1085                         TWL4030_PM_MASTER_KEY_CFG1,
1086                         TWL4030_PM_MASTER_PROTECT_KEY);
1087         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1088                         TWL4030_PM_MASTER_KEY_CFG2,
1089                         TWL4030_PM_MASTER_PROTECT_KEY);
1090
1091         return e;
1092 }
1093
1094 static void clocks_init(struct device *dev,
1095                         struct twl4030_clock_init_data *clock)
1096 {
1097         int e = 0;
1098         struct clk *osc;
1099         u32 rate;
1100         u8 ctrl = HFCLK_FREQ_26_MHZ;
1101
1102 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1103         if (cpu_is_omap2430())
1104                 osc = clk_get(dev, "osc_ck");
1105         else
1106                 osc = clk_get(dev, "osc_sys_ck");
1107
1108         if (IS_ERR(osc)) {
1109                 printk(KERN_WARNING "Skipping twl internal clock init and "
1110                                 "using bootloader value (unknown osc rate)\n");
1111                 return;
1112         }
1113
1114         rate = clk_get_rate(osc);
1115         clk_put(osc);
1116
1117 #else
1118         /* REVISIT for non-OMAP systems, pass the clock rate from
1119          * board init code, using platform_data.
1120          */
1121         osc = ERR_PTR(-EIO);
1122
1123         printk(KERN_WARNING "Skipping twl internal clock init and "
1124                "using bootloader value (unknown osc rate)\n");
1125
1126         return;
1127 #endif
1128
1129         switch (rate) {
1130         case 19200000:
1131                 ctrl = HFCLK_FREQ_19p2_MHZ;
1132                 break;
1133         case 26000000:
1134                 ctrl = HFCLK_FREQ_26_MHZ;
1135                 break;
1136         case 38400000:
1137                 ctrl = HFCLK_FREQ_38p4_MHZ;
1138                 break;
1139         }
1140
1141         ctrl |= HIGH_PERF_SQ;
1142         if (clock && clock->ck32k_lowpwr_enable)
1143                 ctrl |= CK32K_LOWPWR_EN;
1144
1145         e |= unprotect_pm_master();
1146         /* effect->MADC+USB ck en */
1147         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1148         e |= protect_pm_master();
1149
1150         if (e < 0)
1151                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1152 }
1153
1154 /*----------------------------------------------------------------------*/
1155
1156 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1157 int twl4030_exit_irq(void);
1158 int twl4030_init_chip_irq(const char *chip);
1159 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1160 int twl6030_exit_irq(void);
1161
1162 static int twl_remove(struct i2c_client *client)
1163 {
1164         unsigned i;
1165         int status;
1166
1167         if (twl_class_is_4030())
1168                 status = twl4030_exit_irq();
1169         else
1170                 status = twl6030_exit_irq();
1171
1172         if (status < 0)
1173                 return status;
1174
1175         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1176                 struct twl_client       *twl = &twl_modules[i];
1177
1178                 if (twl->client && twl->client != client)
1179                         i2c_unregister_device(twl->client);
1180                 twl_modules[i].client = NULL;
1181         }
1182         inuse = false;
1183         return 0;
1184 }
1185
1186 /* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
1187 static int __devinit
1188 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1189 {
1190         int                             status;
1191         unsigned                        i;
1192         struct twl4030_platform_data    *pdata = client->dev.platform_data;
1193         struct device_node              *node = client->dev.of_node;
1194         u8 temp;
1195         int ret = 0;
1196         int nr_irqs = TWL4030_NR_IRQS;
1197
1198         if ((id->driver_data) & TWL6030_CLASS)
1199                 nr_irqs = TWL6030_NR_IRQS;
1200
1201         if (node && !pdata) {
1202                 /*
1203                  * XXX: Temporary pdata until the information is correctly
1204                  * retrieved by every TWL modules from DT.
1205                  */
1206                 pdata = devm_kzalloc(&client->dev,
1207                                      sizeof(struct twl4030_platform_data),
1208                                      GFP_KERNEL);
1209                 if (!pdata)
1210                         return -ENOMEM;
1211         }
1212
1213         if (!pdata) {
1214                 dev_dbg(&client->dev, "no platform data?\n");
1215                 return -EINVAL;
1216         }
1217
1218         status = irq_alloc_descs(-1, pdata->irq_base, nr_irqs, 0);
1219         if (IS_ERR_VALUE(status)) {
1220                 dev_err(&client->dev, "Fail to allocate IRQ descs\n");
1221                 return status;
1222         }
1223
1224         pdata->irq_base = status;
1225         pdata->irq_end = pdata->irq_base + nr_irqs;
1226         irq_domain_add_legacy(node, nr_irqs, pdata->irq_base, 0,
1227                               &irq_domain_simple_ops, NULL);
1228
1229         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1230                 dev_dbg(&client->dev, "can't talk I2C?\n");
1231                 return -EIO;
1232         }
1233
1234         if (inuse) {
1235                 dev_dbg(&client->dev, "driver is already in use\n");
1236                 return -EBUSY;
1237         }
1238
1239         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1240                 struct twl_client       *twl = &twl_modules[i];
1241
1242                 twl->address = client->addr + i;
1243                 if (i == 0)
1244                         twl->client = client;
1245                 else {
1246                         twl->client = i2c_new_dummy(client->adapter,
1247                                         twl->address);
1248                         if (!twl->client) {
1249                                 dev_err(&client->dev,
1250                                         "can't attach client %d\n", i);
1251                                 status = -ENOMEM;
1252                                 goto fail;
1253                         }
1254                 }
1255                 mutex_init(&twl->xfer_lock);
1256         }
1257         inuse = true;
1258         if ((id->driver_data) & TWL6030_CLASS) {
1259                 twl_id = TWL6030_CLASS_ID;
1260                 twl_map = &twl6030_map[0];
1261         } else {
1262                 twl_id = TWL4030_CLASS_ID;
1263                 twl_map = &twl4030_map[0];
1264         }
1265
1266         /* setup clock framework */
1267         clocks_init(&client->dev, pdata->clock);
1268
1269         /* read TWL IDCODE Register */
1270         if (twl_id == TWL4030_CLASS_ID) {
1271                 ret = twl_read_idcode_register();
1272                 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1273         }
1274
1275         /* load power event scripts */
1276         if (twl_has_power() && pdata->power)
1277                 twl4030_power_init(pdata->power);
1278
1279         /* Maybe init the T2 Interrupt subsystem */
1280         if (client->irq
1281                         && pdata->irq_base
1282                         && pdata->irq_end > pdata->irq_base) {
1283                 if (twl_class_is_4030()) {
1284                         twl4030_init_chip_irq(id->name);
1285                         status = twl4030_init_irq(client->irq, pdata->irq_base,
1286                         pdata->irq_end);
1287                 } else {
1288                         status = twl6030_init_irq(client->irq, pdata->irq_base,
1289                         pdata->irq_end);
1290                 }
1291
1292                 if (status < 0)
1293                         goto fail;
1294         }
1295
1296         /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1297          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1298          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1299          */
1300
1301         if (twl_class_is_4030()) {
1302                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1303                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1304                 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1305                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1306         }
1307
1308         status = -ENODEV;
1309         if (node)
1310                 status = of_platform_populate(node, NULL, NULL, &client->dev);
1311         if (status)
1312                 status = add_children(pdata, id->driver_data);
1313
1314 fail:
1315         if (status < 0)
1316                 twl_remove(client);
1317         return status;
1318 }
1319
1320 static const struct i2c_device_id twl_ids[] = {
1321         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1322         { "twl5030", 0 },               /* T2 updated */
1323         { "twl5031", TWL5031 },         /* TWL5030 updated */
1324         { "tps65950", 0 },              /* catalog version of twl5030 */
1325         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1326         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1327         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1328                                            and vibrator. Charger in USB module*/
1329         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1330         { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1331         { /* end of list */ },
1332 };
1333 MODULE_DEVICE_TABLE(i2c, twl_ids);
1334
1335 /* One Client Driver , 4 Clients */
1336 static struct i2c_driver twl_driver = {
1337         .driver.name    = DRIVER_NAME,
1338         .id_table       = twl_ids,
1339         .probe          = twl_probe,
1340         .remove         = twl_remove,
1341 };
1342
1343 static int __init twl_init(void)
1344 {
1345         return i2c_add_driver(&twl_driver);
1346 }
1347 subsys_initcall(twl_init);
1348
1349 static void __exit twl_exit(void)
1350 {
1351         i2c_del_driver(&twl_driver);
1352 }
1353 module_exit(twl_exit);
1354
1355 MODULE_AUTHOR("Texas Instruments, Inc.");
1356 MODULE_DESCRIPTION("I2C Core interface for TWL");
1357 MODULE_LICENSE("GPL");