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/irq.h>
  42 #include <linux/irqdomain.h>
  43
  44 #include <linux/regulator/machine.h>
  45
  46 #include <linux/i2c.h>
  47 #include <linux/i2c/twl.h>
  48
  49 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
  50 #include <plat/cpu.h>
  51 #endif
  52
  53 /*
  54  * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  55  * Management and System Companion Device" chips originally designed for
  56  * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  57  * often at around 3 Mbit/sec, including for interrupt handling.
  58  *
  59  * This driver core provides genirq support for the interrupts emitted,
  60  * by the various modules, and exports register access primitives.
  61  *
  62  * FIXME this driver currently requires use of the first interrupt line
  63  * (and associated registers).
  64  */
  65
  66 #define DRIVER_NAME                     "twl"
  67
  68 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
  69 #define twl_has_keypad()        true
  70 #else
  71 #define twl_has_keypad()        false
  72 #endif
  73
  74 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
  75 #define twl_has_gpio()  true
  76 #else
  77 #define twl_has_gpio()  false
  78 #endif
  79
  80 #if defined(CONFIG_REGULATOR_TWL4030) \
  81         || defined(CONFIG_REGULATOR_TWL4030_MODULE)
  82 #define twl_has_regulator()     true
  83 #else
  84 #define twl_has_regulator()     false
  85 #endif
  86
  87 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
  88 #define twl_has_madc()  true
  89 #else
  90 #define twl_has_madc()  false
  91 #endif
  92
  93 #ifdef CONFIG_TWL4030_POWER
  94 #define twl_has_power()        true
  95 #else
  96 #define twl_has_power()        false
  97 #endif
  98
  99 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
 100 #define twl_has_rtc()   true
 101 #else
 102 #define twl_has_rtc()   false
 103 #endif
 104
 105 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
 106         defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
 107 #define twl_has_usb()   true
 108 #else
 109 #define twl_has_usb()   false
 110 #endif
 111
 112 #if defined(CONFIG_TWL4030_WATCHDOG) || \
 113         defined(CONFIG_TWL4030_WATCHDOG_MODULE)
 114 #define twl_has_watchdog()        true
 115 #else
 116 #define twl_has_watchdog()        false
 117 #endif
 118
 119 #if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\
 120         defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
 121 #define twl_has_codec() true
 122 #else
 123 #define twl_has_codec() false
 124 #endif
 125
 126 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
 127 #define twl_has_bci()   true
 128 #else
 129 #define twl_has_bci()   false
 130 #endif
 131
 132 /* Triton Core internal information (BEGIN) */
 133
 134 /* Last - for index max*/
 135 #define TWL4030_MODULE_LAST             TWL4030_MODULE_SECURED_REG
 136
 137 #define TWL_NUM_SLAVES          4
 138
 139 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
 140         || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
 141 #define twl_has_pwrbutton()     true
 142 #else
 143 #define twl_has_pwrbutton()     false
 144 #endif
 145
 146 #define SUB_CHIP_ID0 0
 147 #define SUB_CHIP_ID1 1
 148 #define SUB_CHIP_ID2 2
 149 #define SUB_CHIP_ID3 3
 150
 151 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
 152
 153 #define TWL4030_NR_IRQS    34 /* core:8, power:8, gpio: 18 */
 154 #define TWL6030_NR_IRQS    20
 155
 156 /* Base Address defns for twl4030_map[] */
 157
 158 /* subchip/slave 0 - USB ID */
 159 #define TWL4030_BASEADD_USB             0x0000
 160
 161 /* subchip/slave 1 - AUD ID */
 162 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
 163 #define TWL4030_BASEADD_GPIO            0x0098
 164 #define TWL4030_BASEADD_INTBR           0x0085
 165 #define TWL4030_BASEADD_PIH             0x0080
 166 #define TWL4030_BASEADD_TEST            0x004C
 167
 168 /* subchip/slave 2 - AUX ID */
 169 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
 170 #define TWL4030_BASEADD_LED             0x00EE
 171 #define TWL4030_BASEADD_MADC            0x0000
 172 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
 173 #define TWL4030_BASEADD_PRECHARGE       0x00AA
 174 #define TWL4030_BASEADD_PWM0            0x00F8
 175 #define TWL4030_BASEADD_PWM1            0x00FB
 176 #define TWL4030_BASEADD_PWMA            0x00EF
 177 #define TWL4030_BASEADD_PWMB            0x00F1
 178 #define TWL4030_BASEADD_KEYPAD          0x00D2
 179
 180 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
 181 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
 182                                                   one */
 183
 184 /* subchip/slave 3 - POWER ID */
 185 #define TWL4030_BASEADD_BACKUP          0x0014
 186 #define TWL4030_BASEADD_INT             0x002E
 187 #define TWL4030_BASEADD_PM_MASTER       0x0036
 188 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
 189 #define TWL4030_BASEADD_RTC             0x001C
 190 #define TWL4030_BASEADD_SECURED_REG     0x0000
 191
 192 /* Triton Core internal information (END) */
 193
 194
 195 /* subchip/slave 0 0x48 - POWER */
 196 #define TWL6030_BASEADD_RTC             0x0000
 197 #define TWL6030_BASEADD_MEM             0x0017
 198 #define TWL6030_BASEADD_PM_MASTER       0x001F
 199 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 200 #define TWL6030_BASEADD_PM_MISC         0x00E2
 201 #define TWL6030_BASEADD_PM_PUPD         0x00F0
 202
 203 /* subchip/slave 1 0x49 - FEATURE */
 204 #define TWL6030_BASEADD_USB             0x0000
 205 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
 206 #define TWL6030_BASEADD_AUX             0x0090
 207 #define TWL6030_BASEADD_PWM             0x00BA
 208 #define TWL6030_BASEADD_GASGAUGE        0x00C0
 209 #define TWL6030_BASEADD_PIH             0x00D0
 210 #define TWL6030_BASEADD_CHARGER         0x00E0
 211 #define TWL6025_BASEADD_CHARGER         0x00DA
 212
 213 /* subchip/slave 2 0x4A - DFT */
 214 #define TWL6030_BASEADD_DIEID           0x00C0
 215
 216 /* subchip/slave 3 0x4B - AUDIO */
 217 #define TWL6030_BASEADD_AUDIO           0x0000
 218 #define TWL6030_BASEADD_RSV             0x0000
 219 #define TWL6030_BASEADD_ZERO            0x0000
 220
 221 /* Few power values */
 222 #define R_CFG_BOOT                      0x05
 223
 224 /* some fields in R_CFG_BOOT */
 225 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 226 #define HFCLK_FREQ_26_MHZ               (2 << 0)
 227 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 228 #define HIGH_PERF_SQ                    (1 << 3)
 229 #define CK32K_LOWPWR_EN                 (1 << 7)
 230
 231
 232 /* chip-specific feature flags, for i2c_device_id.driver_data */
 233 #define TWL4030_VAUX2           BIT(0)  /* pre-5030 voltage ranges */
 234 #define TPS_SUBSET              BIT(1)  /* tps659[23]0 have fewer LDOs */
 235 #define TWL5031                 BIT(2)  /* twl5031 has different registers */
 236 #define TWL6030_CLASS           BIT(3)  /* TWL6030 class */
 237
 238 /*----------------------------------------------------------------------*/
 239
 240 /* is driver active, bound to a chip? */
 241 static bool inuse;
 242
 243 /* TWL IDCODE Register value */
 244 static u32 twl_idcode;
 245
 246 static unsigned int twl_id;
 247 unsigned int twl_rev(void)
 248 {
 249         return twl_id;
 250 }
 251 EXPORT_SYMBOL(twl_rev);
 252
 253 /* Structure for each TWL4030/TWL6030 Slave */
 254 struct twl_client {
 255         struct i2c_client *client;
 256         u8 address;
 257
 258         /* max numb of i2c_msg required is for read =2 */
 259         struct i2c_msg xfer_msg[2];
 260
 261         /* To lock access to xfer_msg */
 262         struct mutex xfer_lock;
 263 };
 264
 265 static struct twl_client twl_modules[TWL_NUM_SLAVES];
 266
 267 /* mapping the module id to slave id and base address */
 268 struct twl_mapping {
 269         unsigned char sid;      /* Slave ID */
 270         unsigned char base;     /* base address */
 271 };
 272 static struct twl_mapping *twl_map;
 273
 274 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
 275         /*
 276          * NOTE:  don't change this table without updating the
 277          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 278          * so they continue to match the order in this table.
 279          */
 280
 281         { 0, TWL4030_BASEADD_USB },
 282
 283         { 1, TWL4030_BASEADD_AUDIO_VOICE },
 284         { 1, TWL4030_BASEADD_GPIO },
 285         { 1, TWL4030_BASEADD_INTBR },
 286         { 1, TWL4030_BASEADD_PIH },
 287         { 1, TWL4030_BASEADD_TEST },
 288
 289         { 2, TWL4030_BASEADD_KEYPAD },
 290         { 2, TWL4030_BASEADD_MADC },
 291         { 2, TWL4030_BASEADD_INTERRUPTS },
 292         { 2, TWL4030_BASEADD_LED },
 293         { 2, TWL4030_BASEADD_MAIN_CHARGE },
 294         { 2, TWL4030_BASEADD_PRECHARGE },
 295         { 2, TWL4030_BASEADD_PWM0 },
 296         { 2, TWL4030_BASEADD_PWM1 },
 297         { 2, TWL4030_BASEADD_PWMA },
 298         { 2, TWL4030_BASEADD_PWMB },
 299         { 2, TWL5031_BASEADD_ACCESSORY },
 300         { 2, TWL5031_BASEADD_INTERRUPTS },
 301
 302         { 3, TWL4030_BASEADD_BACKUP },
 303         { 3, TWL4030_BASEADD_INT },
 304         { 3, TWL4030_BASEADD_PM_MASTER },
 305         { 3, TWL4030_BASEADD_PM_RECEIVER },
 306         { 3, TWL4030_BASEADD_RTC },
 307         { 3, TWL4030_BASEADD_SECURED_REG },
 308 };
 309
 310 static struct twl_mapping twl6030_map[] = {
 311         /*
 312          * NOTE:  don't change this table without updating the
 313          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 314          * so they continue to match the order in this table.
 315          */
 316         { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
 317         { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
 318         { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
 319         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 320         { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
 321
 322         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 323         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 324         { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
 325         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 326         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 327
 328         { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
 329         { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
 330         { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
 331         { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
 332         { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
 333
 334         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 335         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 336         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 337         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 338         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 339         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
 340         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
 341
 342         { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
 343         { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
 344         { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
 345 };
 346
 347 /*----------------------------------------------------------------------*/
 348
 349 /* Exported Functions */
 350
 351 /**
 352  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 353  * @mod_no: module number
 354  * @value: an array of num_bytes+1 containing data to write
 355  * @reg: register address (just offset will do)
 356  * @num_bytes: number of bytes to transfer
 357  *
 358  * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
 359  * valid data starts at Offset 1.
 360  *
 361  * Returns the result of operation - 0 is success
 362  */
 363 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 364 {
 365         int ret;
 366         int sid;
 367         struct twl_client *twl;
 368         struct i2c_msg *msg;
 369
 370         if (unlikely(mod_no > TWL_MODULE_LAST)) {
 371                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 372                 return -EPERM;
 373         }
 374         if (unlikely(!inuse)) {
 375                 pr_err("%s: not initialized\n", DRIVER_NAME);
 376                 return -EPERM;
 377         }
 378         sid = twl_map[mod_no].sid;
 379         twl = &twl_modules[sid];
 380
 381         mutex_lock(&twl->xfer_lock);
 382         /*
 383          * [MSG1]: fill the register address data
 384          * fill the data Tx buffer
 385          */
 386         msg = &twl->xfer_msg[0];
 387         msg->addr = twl->address;
 388         msg->len = num_bytes + 1;
 389         msg->flags = 0;
 390         msg->buf = value;
 391         /* over write the first byte of buffer with the register address */
 392         *value = twl_map[mod_no].base + reg;
 393         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
 394         mutex_unlock(&twl->xfer_lock);
 395
 396         /* i2c_transfer returns number of messages transferred */
 397         if (ret != 1) {
 398                 pr_err("%s: i2c_write failed to transfer all messages\n",
 399                         DRIVER_NAME);
 400                 if (ret < 0)
 401                         return ret;
 402                 else
 403                         return -EIO;
 404         } else {
 405                 return 0;
 406         }
 407 }
 408 EXPORT_SYMBOL(twl_i2c_write);
 409
 410 /**
 411  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 412  * @mod_no: module number
 413  * @value: an array of num_bytes containing data to be read
 414  * @reg: register address (just offset will do)
 415  * @num_bytes: number of bytes to transfer
 416  *
 417  * Returns result of operation - num_bytes is success else failure.
 418  */
 419 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 420 {
 421         int ret;
 422         u8 val;
 423         int sid;
 424         struct twl_client *twl;
 425         struct i2c_msg *msg;
 426
 427         if (unlikely(mod_no > TWL_MODULE_LAST)) {
 428                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 429                 return -EPERM;
 430         }
 431         if (unlikely(!inuse)) {
 432                 pr_err("%s: not initialized\n", DRIVER_NAME);
 433                 return -EPERM;
 434         }
 435         sid = twl_map[mod_no].sid;
 436         twl = &twl_modules[sid];
 437
 438         mutex_lock(&twl->xfer_lock);
 439         /* [MSG1] fill the register address data */
 440         msg = &twl->xfer_msg[0];
 441         msg->addr = twl->address;
 442         msg->len = 1;
 443         msg->flags = 0; /* Read the register value */
 444         val = twl_map[mod_no].base + reg;
 445         msg->buf = &val;
 446         /* [MSG2] fill the data rx buffer */
 447         msg = &twl->xfer_msg[1];
 448         msg->addr = twl->address;
 449         msg->flags = I2C_M_RD;  /* Read the register value */
 450         msg->len = num_bytes;   /* only n bytes */
 451         msg->buf = value;
 452         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
 453         mutex_unlock(&twl->xfer_lock);
 454
 455         /* i2c_transfer returns number of messages transferred */
 456         if (ret != 2) {
 457                 pr_err("%s: i2c_read failed to transfer all messages\n",
 458                         DRIVER_NAME);
 459                 if (ret < 0)
 460                         return ret;
 461                 else
 462                         return -EIO;
 463         } else {
 464                 return 0;
 465         }
 466 }
 467 EXPORT_SYMBOL(twl_i2c_read);
 468
 469 /**
 470  * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
 471  * @mod_no: module number
 472  * @value: the value to be written 8 bit
 473  * @reg: register address (just offset will do)
 474  *
 475  * Returns result of operation - 0 is success
 476  */
 477 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
 478 {
 479
 480         /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
 481         u8 temp_buffer[2] = { 0 };
 482         /* offset 1 contains the data */
 483         temp_buffer[1] = value;
 484         return twl_i2c_write(mod_no, temp_buffer, reg, 1);
 485 }
 486 EXPORT_SYMBOL(twl_i2c_write_u8);
 487
 488 /**
 489  * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
 490  * @mod_no: module number
 491  * @value: the value read 8 bit
 492  * @reg: register address (just offset will do)
 493  *
 494  * Returns result of operation - 0 is success
 495  */
 496 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
 497 {
 498         return twl_i2c_read(mod_no, value, reg, 1);
 499 }
 500 EXPORT_SYMBOL(twl_i2c_read_u8);
 501
 502 /*----------------------------------------------------------------------*/
 503
 504 /**
 505  * twl_read_idcode_register - API to read the IDCODE register.
 506  *
 507  * Unlocks the IDCODE register and read the 32 bit value.
 508  */
 509 static int twl_read_idcode_register(void)
 510 {
 511         int err;
 512
 513         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 514                                                 REG_UNLOCK_TEST_REG);
 515         if (err) {
 516                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 517                 goto fail;
 518         }
 519
 520         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
 521                                                 REG_IDCODE_7_0, 4);
 522         if (err) {
 523                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 524                 goto fail;
 525         }
 526
 527         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 528         if (err)
 529                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 530 fail:
 531         return err;
 532 }
 533
 534 /**
 535  * twl_get_type - API to get TWL Si type.
 536  *
 537  * Api to get the TWL Si type from IDCODE value.
 538  */
 539 int twl_get_type(void)
 540 {
 541         return TWL_SIL_TYPE(twl_idcode);
 542 }
 543 EXPORT_SYMBOL_GPL(twl_get_type);
 544
 545 /**
 546  * twl_get_version - API to get TWL Si version.
 547  *
 548  * Api to get the TWL Si version from IDCODE value.
 549  */
 550 int twl_get_version(void)
 551 {
 552         return TWL_SIL_REV(twl_idcode);
 553 }
 554 EXPORT_SYMBOL_GPL(twl_get_version);
 555
 556 static struct device *
 557 add_numbered_child(unsigned chip, const char *name, int num,
 558                 void *pdata, unsigned pdata_len,
 559                 bool can_wakeup, int irq0, int irq1)
 560 {
 561         struct platform_device  *pdev;
 562         struct twl_client       *twl = &twl_modules[chip];
 563         int                     status;
 564
 565         pdev = platform_device_alloc(name, num);
 566         if (!pdev) {
 567                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
 568                 status = -ENOMEM;
 569                 goto err;
 570         }
 571
 572         device_init_wakeup(&pdev->dev, can_wakeup);
 573         pdev->dev.parent = &twl->client->dev;
 574
 575         if (pdata) {
 576                 status = platform_device_add_data(pdev, pdata, pdata_len);
 577                 if (status < 0) {
 578                         dev_dbg(&pdev->dev, "can't add platform_data\n");
 579                         goto err;
 580                 }
 581         }
 582
 583         if (irq0) {
 584                 struct resource r[2] = {
 585                         { .start = irq0, .flags = IORESOURCE_IRQ, },
 586                         { .start = irq1, .flags = IORESOURCE_IRQ, },
 587                 };
 588
 589                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 590                 if (status < 0) {
 591                         dev_dbg(&pdev->dev, "can't add irqs\n");
 592                         goto err;
 593                 }
 594         }
 595
 596         status = platform_device_add(pdev);
 597
 598 err:
 599         if (status < 0) {
 600                 platform_device_put(pdev);
 601                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
 602                 return ERR_PTR(status);
 603         }
 604         return &pdev->dev;
 605 }
 606
 607 static inline struct device *add_child(unsigned chip, const char *name,
 608                 void *pdata, unsigned pdata_len,
 609                 bool can_wakeup, int irq0, int irq1)
 610 {
 611         return add_numbered_child(chip, name, -1, pdata, pdata_len,
 612                 can_wakeup, irq0, irq1);
 613 }
 614
 615 static struct device *
 616 add_regulator_linked(int num, struct regulator_init_data *pdata,
 617                 struct regulator_consumer_supply *consumers,
 618                 unsigned num_consumers, unsigned long features)
 619 {
 620         unsigned sub_chip_id;
 621         struct twl_regulator_driver_data drv_data;
 622
 623         /* regulator framework demands init_data ... */
 624         if (!pdata)
 625                 return NULL;
 626
 627         if (consumers) {
 628                 pdata->consumer_supplies = consumers;
 629                 pdata->num_consumer_supplies = num_consumers;
 630         }
 631
 632         if (pdata->driver_data) {
 633                 /* If we have existing drv_data, just add the flags */
 634                 struct twl_regulator_driver_data *tmp;
 635                 tmp = pdata->driver_data;
 636                 tmp->features |= features;
 637         } else {
 638                 /* add new driver data struct, used only during init */
 639                 drv_data.features = features;
 640                 drv_data.set_voltage = NULL;
 641                 drv_data.get_voltage = NULL;
 642                 drv_data.data = NULL;
 643                 pdata->driver_data = &drv_data;
 644         }
 645
 646         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 647         sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
 648         return add_numbered_child(sub_chip_id, "twl_reg", num,
 649                 pdata, sizeof(*pdata), false, 0, 0);
 650 }
 651
 652 static struct device *
 653 add_regulator(int num, struct regulator_init_data *pdata,
 654                 unsigned long features)
 655 {
 656         return add_regulator_linked(num, pdata, NULL, 0, features);
 657 }
 658
 659 /*
 660  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 661  * for the PIH, and the next are for the PWR_INT SIH, since
 662  * that's how twl_init_irq() sets things up.
 663  */
 664
 665 static int
 666 add_children(struct twl4030_platform_data *pdata, unsigned long features)
 667 {
 668         struct device   *child;
 669         unsigned sub_chip_id;
 670
 671         if (twl_has_gpio() && pdata->gpio) {
 672                 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
 673                                 pdata->gpio, sizeof(*pdata->gpio),
 674                                 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
 675                 if (IS_ERR(child))
 676                         return PTR_ERR(child);
 677         }
 678
 679         if (twl_has_keypad() && pdata->keypad) {
 680                 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
 681                                 pdata->keypad, sizeof(*pdata->keypad),
 682                                 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
 683                 if (IS_ERR(child))
 684                         return PTR_ERR(child);
 685         }
 686
 687         if (twl_has_madc() && pdata->madc) {
 688                 child = add_child(2, "twl4030_madc",
 689                                 pdata->madc, sizeof(*pdata->madc),
 690                                 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
 691                 if (IS_ERR(child))
 692                         return PTR_ERR(child);
 693         }
 694
 695         if (twl_has_rtc()) {
 696                 /*
 697                  * REVISIT platform_data here currently might expose the
 698                  * "msecure" line ... but for now we just expect board
 699                  * setup to tell the chip "it's always ok to SET_TIME".
 700                  * Eventually, Linux might become more aware of such
 701                  * HW security concerns, and "least privilege".
 702                  */
 703                 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
 704                 child = add_child(sub_chip_id, "twl_rtc",
 705                                 NULL, 0,
 706                                 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
 707                 if (IS_ERR(child))
 708                         return PTR_ERR(child);
 709         }
 710
 711         if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
 712
 713                 static struct regulator_consumer_supply usb1v5 = {
 714                         .supply =       "usb1v5",
 715                 };
 716                 static struct regulator_consumer_supply usb1v8 = {
 717                         .supply =       "usb1v8",
 718                 };
 719                 static struct regulator_consumer_supply usb3v1 = {
 720                         .supply =       "usb3v1",
 721                 };
 722
 723         /* First add the regulators so that they can be used by transceiver */
 724                 if (twl_has_regulator()) {
 725                         /* this is a template that gets copied */
 726                         struct regulator_init_data usb_fixed = {
 727                                 .constraints.valid_modes_mask =
 728                                         REGULATOR_MODE_NORMAL
 729                                         | REGULATOR_MODE_STANDBY,
 730                                 .constraints.valid_ops_mask =
 731                                         REGULATOR_CHANGE_MODE
 732                                         | REGULATOR_CHANGE_STATUS,
 733                         };
 734
 735                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 736                                                       &usb_fixed, &usb1v5, 1,
 737                                                       features);
 738                         if (IS_ERR(child))
 739                                 return PTR_ERR(child);
 740
 741                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 742                                                       &usb_fixed, &usb1v8, 1,
 743                                                       features);
 744                         if (IS_ERR(child))
 745                                 return PTR_ERR(child);
 746
 747                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 748                                                       &usb_fixed, &usb3v1, 1,
 749                                                       features);
 750                         if (IS_ERR(child))
 751                                 return PTR_ERR(child);
 752
 753                 }
 754
 755                 child = add_child(0, "twl4030_usb",
 756                                 pdata->usb, sizeof(*pdata->usb),
 757                                 true,
 758                                 /* irq0 = USB_PRES, irq1 = USB */
 759                                 pdata->irq_base + USB_PRES_INTR_OFFSET,
 760                                 pdata->irq_base + USB_INTR_OFFSET);
 761
 762                 if (IS_ERR(child))
 763                         return PTR_ERR(child);
 764
 765                 /* we need to connect regulators to this transceiver */
 766                 if (twl_has_regulator() && child) {
 767                         usb1v5.dev_name = dev_name(child);
 768                         usb1v8.dev_name = dev_name(child);
 769                         usb3v1.dev_name = dev_name(child);
 770                 }
 771         }
 772         if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
 773
 774                 static struct regulator_consumer_supply usb3v3;
 775                 int regulator;
 776
 777                 if (twl_has_regulator()) {
 778                         /* this is a template that gets copied */
 779                         struct regulator_init_data usb_fixed = {
 780                                 .constraints.valid_modes_mask =
 781                                         REGULATOR_MODE_NORMAL
 782                                         | REGULATOR_MODE_STANDBY,
 783                                 .constraints.valid_ops_mask =
 784                                         REGULATOR_CHANGE_MODE
 785                                         | REGULATOR_CHANGE_STATUS,
 786                         };
 787
 788                         if (features & TWL6025_SUBCLASS) {
 789                                 usb3v3.supply = "ldousb";
 790                                 regulator = TWL6025_REG_LDOUSB;
 791                         } else {
 792                                 usb3v3.supply = "vusb";
 793                                 regulator = TWL6030_REG_VUSB;
 794                         }
 795                         child = add_regulator_linked(regulator, &usb_fixed,
 796                                                         &usb3v3, 1,
 797                                                         features);
 798                         if (IS_ERR(child))
 799                                 return PTR_ERR(child);
 800                 }
 801
 802                 pdata->usb->features = features;
 803
 804                 child = add_child(0, "twl6030_usb",
 805                         pdata->usb, sizeof(*pdata->usb),
 806                         true,
 807                         /* irq1 = VBUS_PRES, irq0 = USB ID */
 808                         pdata->irq_base + USBOTG_INTR_OFFSET,
 809                         pdata->irq_base + USB_PRES_INTR_OFFSET);
 810
 811                 if (IS_ERR(child))
 812                         return PTR_ERR(child);
 813                 /* we need to connect regulators to this transceiver */
 814                 if (twl_has_regulator() && child)
 815                         usb3v3.dev_name = dev_name(child);
 816         } else if (twl_has_regulator() && twl_class_is_6030()) {
 817                 if (features & TWL6025_SUBCLASS)
 818                         child = add_regulator(TWL6025_REG_LDOUSB,
 819                                                 pdata->ldousb, features);
 820                 else
 821                         child = add_regulator(TWL6030_REG_VUSB,
 822                                                 pdata->vusb, features);
 823
 824                         if (IS_ERR(child))
 825                                         return PTR_ERR(child);
 826         }
 827
 828         if (twl_has_watchdog() && twl_class_is_4030()) {
 829                 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
 830                 if (IS_ERR(child))
 831                         return PTR_ERR(child);
 832         }
 833
 834         if (twl_has_pwrbutton() && twl_class_is_4030()) {
 835                 child = add_child(1, "twl4030_pwrbutton",
 836                                 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
 837                 if (IS_ERR(child))
 838                         return PTR_ERR(child);
 839         }
 840
 841         if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
 842                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 843                 child = add_child(sub_chip_id, "twl4030-audio",
 844                                 pdata->audio, sizeof(*pdata->audio),
 845                                 false, 0, 0);
 846                 if (IS_ERR(child))
 847                         return PTR_ERR(child);
 848         }
 849
 850         if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
 851                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 852                 child = add_child(sub_chip_id, "twl6040",
 853                                 pdata->audio, sizeof(*pdata->audio),
 854                                 false, 0, 0);
 855                 if (IS_ERR(child))
 856                         return PTR_ERR(child);
 857         }
 858
 859         /* twl4030 regulators */
 860         if (twl_has_regulator() && twl_class_is_4030()) {
 861                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 862                                         features);
 863                 if (IS_ERR(child))
 864                         return PTR_ERR(child);
 865
 866                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 867                                         features);
 868                 if (IS_ERR(child))
 869                         return PTR_ERR(child);
 870
 871                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 872                                         features);
 873                 if (IS_ERR(child))
 874                         return PTR_ERR(child);
 875
 876                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 877                                         features);
 878                 if (IS_ERR(child))
 879                         return PTR_ERR(child);
 880
 881                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 882                                         features);
 883                 if (IS_ERR(child))
 884                         return PTR_ERR(child);
 885
 886                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 887                                         features);
 888                 if (IS_ERR(child))
 889                         return PTR_ERR(child);
 890
 891                 child = add_regulator((features & TWL4030_VAUX2)
 892                                         ? TWL4030_REG_VAUX2_4030
 893                                         : TWL4030_REG_VAUX2,
 894                                 pdata->vaux2, features);
 895                 if (IS_ERR(child))
 896                         return PTR_ERR(child);
 897
 898                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 899                                         features);
 900                 if (IS_ERR(child))
 901                         return PTR_ERR(child);
 902
 903                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 904                                         features);
 905                 if (IS_ERR(child))
 906                         return PTR_ERR(child);
 907
 908                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 909                                         features);
 910                 if (IS_ERR(child))
 911                         return PTR_ERR(child);
 912         }
 913
 914         /* maybe add LDOs that are omitted on cost-reduced parts */
 915         if (twl_has_regulator() && !(features & TPS_SUBSET)
 916           && twl_class_is_4030()) {
 917                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 918                                         features);
 919                 if (IS_ERR(child))
 920                         return PTR_ERR(child);
 921
 922                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 923                                         features);
 924                 if (IS_ERR(child))
 925                         return PTR_ERR(child);
 926
 927                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 928                                         features);
 929                 if (IS_ERR(child))
 930                         return PTR_ERR(child);
 931
 932                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 933                                         features);
 934                 if (IS_ERR(child))
 935                         return PTR_ERR(child);
 936
 937                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 938                                         features);
 939                 if (IS_ERR(child))
 940                         return PTR_ERR(child);
 941
 942                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 943                                         features);
 944                 if (IS_ERR(child))
 945                         return PTR_ERR(child);
 946         }
 947
 948         /* twl6030 regulators */
 949         if (twl_has_regulator() && twl_class_is_6030() &&
 950                         !(features & TWL6025_SUBCLASS)) {
 951                 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
 952                                         features);
 953                 if (IS_ERR(child))
 954                         return PTR_ERR(child);
 955
 956                 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
 957                                         features);
 958                 if (IS_ERR(child))
 959                         return PTR_ERR(child);
 960
 961                 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
 962                                         features);
 963                 if (IS_ERR(child))
 964                         return PTR_ERR(child);
 965
 966                 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
 967                                         features);
 968                 if (IS_ERR(child))
 969                         return PTR_ERR(child);
 970
 971                 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
 972                                         features);
 973                 if (IS_ERR(child))
 974                         return PTR_ERR(child);
 975
 976                 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
 977                                         features);
 978                 if (IS_ERR(child))
 979                         return PTR_ERR(child);
 980
 981                 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
 982                                         features);
 983                 if (IS_ERR(child))
 984                         return PTR_ERR(child);
 985
 986                 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
 987                                         features);
 988                 if (IS_ERR(child))
 989                         return PTR_ERR(child);
 990
 991                 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
 992                                         features);
 993                 if (IS_ERR(child))
 994                         return PTR_ERR(child);
 995
 996                 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
 997                                         features);
 998                 if (IS_ERR(child))
 999                         return PTR_ERR(child);
1000
1001                 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
1002                                         features);
1003                 if (IS_ERR(child))
1004                         return PTR_ERR(child);
1005
1006                 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
1007                                         features);
1008                 if (IS_ERR(child))
1009                         return PTR_ERR(child);
1010
1011                 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
1012                                         features);
1013                 if (IS_ERR(child))
1014                         return PTR_ERR(child);
1015
1016                 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
1017                                         features);
1018                 if (IS_ERR(child))
1019                         return PTR_ERR(child);
1020         }
1021
1022         /* 6030 and 6025 share this regulator */
1023         if (twl_has_regulator() && twl_class_is_6030()) {
1024                 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
1025                                         features);
1026                 if (IS_ERR(child))
1027                         return PTR_ERR(child);
1028         }
1029
1030         /* twl6025 regulators */
1031         if (twl_has_regulator() && twl_class_is_6030() &&
1032                         (features & TWL6025_SUBCLASS)) {
1033                 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
1034                                         features);
1035                 if (IS_ERR(child))
1036                         return PTR_ERR(child);
1037
1038                 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1039                                         features);
1040                 if (IS_ERR(child))
1041                         return PTR_ERR(child);
1042
1043                 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1044                                         features);
1045                 if (IS_ERR(child))
1046                         return PTR_ERR(child);
1047
1048                 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1049                                         features);
1050                 if (IS_ERR(child))
1051                         return PTR_ERR(child);
1052
1053                 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1054                                         features);
1055                 if (IS_ERR(child))
1056                         return PTR_ERR(child);
1057
1058                 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1059                                         features);
1060                 if (IS_ERR(child))
1061                         return PTR_ERR(child);
1062
1063                 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1064                                         features);
1065                 if (IS_ERR(child))
1066                         return PTR_ERR(child);
1067
1068                 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1069                                         features);
1070                 if (IS_ERR(child))
1071                         return PTR_ERR(child);
1072
1073                 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1074                                         features);
1075                 if (IS_ERR(child))
1076                         return PTR_ERR(child);
1077
1078                 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1079                                         features);
1080                 if (IS_ERR(child))
1081                         return PTR_ERR(child);
1082
1083                 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1084                                         features);
1085                 if (IS_ERR(child))
1086                         return PTR_ERR(child);
1087
1088         }
1089
1090         if (twl_has_bci() && pdata->bci &&
1091                         !(features & (TPS_SUBSET | TWL5031))) {
1092                 child = add_child(3, "twl4030_bci",
1093                                 pdata->bci, sizeof(*pdata->bci), false,
1094                                 /* irq0 = CHG_PRES, irq1 = BCI */
1095                                 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1096                                 pdata->irq_base + BCI_INTR_OFFSET);
1097                 if (IS_ERR(child))
1098                         return PTR_ERR(child);
1099         }
1100
1101         return 0;
1102 }
1103
1104 /*----------------------------------------------------------------------*/
1105
1106 /*
1107  * These three functions initialize the on-chip clock framework,
1108  * letting it generate the right frequencies for USB, MADC, and
1109  * other purposes.
1110  */
1111 static inline int __init protect_pm_master(void)
1112 {
1113         int e = 0;
1114
1115         e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1116                         TWL4030_PM_MASTER_PROTECT_KEY);
1117         return e;
1118 }
1119
1120 static inline int __init unprotect_pm_master(void)
1121 {
1122         int e = 0;
1123
1124         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1125                         TWL4030_PM_MASTER_KEY_CFG1,
1126                         TWL4030_PM_MASTER_PROTECT_KEY);
1127         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1128                         TWL4030_PM_MASTER_KEY_CFG2,
1129                         TWL4030_PM_MASTER_PROTECT_KEY);
1130
1131         return e;
1132 }
1133
1134 static void clocks_init(struct device *dev,
1135                         struct twl4030_clock_init_data *clock)
1136 {
1137         int e = 0;
1138         struct clk *osc;
1139         u32 rate;
1140         u8 ctrl = HFCLK_FREQ_26_MHZ;
1141
1142 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1143         if (cpu_is_omap2430())
1144                 osc = clk_get(dev, "osc_ck");
1145         else
1146                 osc = clk_get(dev, "osc_sys_ck");
1147
1148         if (IS_ERR(osc)) {
1149                 printk(KERN_WARNING "Skipping twl internal clock init and "
1150                                 "using bootloader value (unknown osc rate)\n");
1151                 return;
1152         }
1153
1154         rate = clk_get_rate(osc);
1155         clk_put(osc);
1156
1157 #else
1158         /* REVISIT for non-OMAP systems, pass the clock rate from
1159          * board init code, using platform_data.
1160          */
1161         osc = ERR_PTR(-EIO);
1162
1163         printk(KERN_WARNING "Skipping twl internal clock init and "
1164                "using bootloader value (unknown osc rate)\n");
1165
1166         return;
1167 #endif
1168
1169         switch (rate) {
1170         case 19200000:
1171                 ctrl = HFCLK_FREQ_19p2_MHZ;
1172                 break;
1173         case 26000000:
1174                 ctrl = HFCLK_FREQ_26_MHZ;
1175                 break;
1176         case 38400000:
1177                 ctrl = HFCLK_FREQ_38p4_MHZ;
1178                 break;
1179         }
1180
1181         ctrl |= HIGH_PERF_SQ;
1182         if (clock && clock->ck32k_lowpwr_enable)
1183                 ctrl |= CK32K_LOWPWR_EN;
1184
1185         e |= unprotect_pm_master();
1186         /* effect->MADC+USB ck en */
1187         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1188         e |= protect_pm_master();
1189
1190         if (e < 0)
1191                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1192 }
1193
1194 /*----------------------------------------------------------------------*/
1195
1196 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1197 int twl4030_exit_irq(void);
1198 int twl4030_init_chip_irq(const char *chip);
1199 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1200 int twl6030_exit_irq(void);
1201
1202 static int twl_remove(struct i2c_client *client)
1203 {
1204         unsigned i;
1205         int status;
1206
1207         if (twl_class_is_4030())
1208                 status = twl4030_exit_irq();
1209         else
1210                 status = twl6030_exit_irq();
1211
1212         if (status < 0)
1213                 return status;
1214
1215         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1216                 struct twl_client       *twl = &twl_modules[i];
1217
1218                 if (twl->client && twl->client != client)
1219                         i2c_unregister_device(twl->client);
1220                 twl_modules[i].client = NULL;
1221         }
1222         inuse = false;
1223         return 0;
1224 }
1225
1226 /* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
1227 static int __devinit
1228 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1229 {
1230         int                             status;
1231         unsigned                        i;
1232         struct twl4030_platform_data    *pdata = client->dev.platform_data;
1233         struct device_node              *node = client->dev.of_node;
1234         u8 temp;
1235         int ret = 0;
1236         int nr_irqs = TWL4030_NR_IRQS;
1237
1238         if ((id->driver_data) & TWL6030_CLASS)
1239                 nr_irqs = TWL6030_NR_IRQS;
1240
1241         if (node && !pdata) {
1242                 /*
1243                  * XXX: Temporary pdata until the information is correctly
1244                  * retrieved by every TWL modules from DT.
1245                  */
1246                 pdata = devm_kzalloc(&client->dev,
1247                                      sizeof(struct twl4030_platform_data),
1248                                      GFP_KERNEL);
1249                 if (!pdata)
1250                         return -ENOMEM;
1251         }
1252
1253         if (!pdata) {
1254                 dev_dbg(&client->dev, "no platform data?\n");
1255                 return -EINVAL;
1256         }
1257
1258         status = irq_alloc_descs(-1, pdata->irq_base, nr_irqs, 0);
1259         if (IS_ERR_VALUE(status)) {
1260                 dev_err(&client->dev, "Fail to allocate IRQ descs\n");
1261                 return status;
1262         }
1263
1264         pdata->irq_base = status;
1265         pdata->irq_end = pdata->irq_base + nr_irqs;
1266         irq_domain_add_legacy(node, nr_irqs, pdata->irq_base, 0,
1267                               &irq_domain_simple_ops, NULL);
1268
1269         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1270                 dev_dbg(&client->dev, "can't talk I2C?\n");
1271                 return -EIO;
1272         }
1273
1274         if (inuse) {
1275                 dev_dbg(&client->dev, "driver is already in use\n");
1276                 return -EBUSY;
1277         }
1278
1279         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1280                 struct twl_client       *twl = &twl_modules[i];
1281
1282                 twl->address = client->addr + i;
1283                 if (i == 0)
1284                         twl->client = client;
1285                 else {
1286                         twl->client = i2c_new_dummy(client->adapter,
1287                                         twl->address);
1288                         if (!twl->client) {
1289                                 dev_err(&client->dev,
1290                                         "can't attach client %d\n", i);
1291                                 status = -ENOMEM;
1292                                 goto fail;
1293                         }
1294                 }
1295                 mutex_init(&twl->xfer_lock);
1296         }
1297         inuse = true;
1298         if ((id->driver_data) & TWL6030_CLASS) {
1299                 twl_id = TWL6030_CLASS_ID;
1300                 twl_map = &twl6030_map[0];
1301         } else {
1302                 twl_id = TWL4030_CLASS_ID;
1303                 twl_map = &twl4030_map[0];
1304         }
1305
1306         /* setup clock framework */
1307         clocks_init(&client->dev, pdata->clock);
1308
1309         /* read TWL IDCODE Register */
1310         if (twl_id == TWL4030_CLASS_ID) {
1311                 ret = twl_read_idcode_register();
1312                 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1313         }
1314
1315         /* load power event scripts */
1316         if (twl_has_power() && pdata->power)
1317                 twl4030_power_init(pdata->power);
1318
1319         /* Maybe init the T2 Interrupt subsystem */
1320         if (client->irq
1321                         && pdata->irq_base
1322                         && pdata->irq_end > pdata->irq_base) {
1323                 if (twl_class_is_4030()) {
1324                         twl4030_init_chip_irq(id->name);
1325                         status = twl4030_init_irq(client->irq, pdata->irq_base,
1326                         pdata->irq_end);
1327                 } else {
1328                         status = twl6030_init_irq(client->irq, pdata->irq_base,
1329                         pdata->irq_end);
1330                 }
1331
1332                 if (status < 0)
1333                         goto fail;
1334         }
1335
1336         /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1337          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1338          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1339          */
1340
1341         if (twl_class_is_4030()) {
1342                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1343                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1344                 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1345                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1346         }
1347
1348         status = -ENODEV;
1349         if (node)
1350                 status = of_platform_populate(node, NULL, NULL, &client->dev);
1351         if (status)
1352                 status = add_children(pdata, id->driver_data);
1353
1354 fail:
1355         if (status < 0)
1356                 twl_remove(client);
1357         return status;
1358 }
1359
1360 static const struct i2c_device_id twl_ids[] = {
1361         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1362         { "twl5030", 0 },               /* T2 updated */
1363         { "twl5031", TWL5031 },         /* TWL5030 updated */
1364         { "tps65950", 0 },              /* catalog version of twl5030 */
1365         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1366         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1367         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1368                                            and vibrator. Charger in USB module*/
1369         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1370         { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1371         { /* end of list */ },
1372 };
1373 MODULE_DEVICE_TABLE(i2c, twl_ids);
1374
1375 /* One Client Driver , 4 Clients */
1376 static struct i2c_driver twl_driver = {
1377         .driver.name    = DRIVER_NAME,
1378         .id_table       = twl_ids,
1379         .probe          = twl_probe,
1380         .remove         = twl_remove,
1381 };
1382
1383 static int __init twl_init(void)
1384 {
1385         return i2c_add_driver(&twl_driver);
1386 }
1387 subsys_initcall(twl_init);
1388
1389 static void __exit twl_exit(void)
1390 {
1391         i2c_del_driver(&twl_driver);
1392 }
1393 module_exit(twl_exit);
1394
1395 MODULE_AUTHOR("Texas Instruments, Inc.");
1396 MODULE_DESCRIPTION("I2C Core interface for TWL");
1397 MODULE_LICENSE("GPL");