linux/drivers/mfd/twl-core.c
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   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/regmap.h>
  36#include <linux/clk.h>
  37#include <linux/err.h>
  38#include <linux/device.h>
  39#include <linux/of.h>
  40#include <linux/of_irq.h>
  41#include <linux/of_platform.h>
  42#include <linux/irq.h>
  43#include <linux/irqdomain.h>
  44
  45#include <linux/regulator/machine.h>
  46
  47#include <linux/i2c.h>
  48#include <linux/i2c/twl.h>
  49
  50/* Register descriptions for audio */
  51#include <linux/mfd/twl4030-audio.h>
  52
  53#include "twl-core.h"
  54
  55/*
  56 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  57 * Management and System Companion Device" chips originally designed for
  58 * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  59 * often at around 3 Mbit/sec, including for interrupt handling.
  60 *
  61 * This driver core provides genirq support for the interrupts emitted,
  62 * by the various modules, and exports register access primitives.
  63 *
  64 * FIXME this driver currently requires use of the first interrupt line
  65 * (and associated registers).
  66 */
  67
  68#define DRIVER_NAME                     "twl"
  69
  70/* Triton Core internal information (BEGIN) */
  71
  72/* Base Address defns for twl4030_map[] */
  73
  74/* subchip/slave 0 - USB ID */
  75#define TWL4030_BASEADD_USB             0x0000
  76
  77/* subchip/slave 1 - AUD ID */
  78#define TWL4030_BASEADD_AUDIO_VOICE     0x0000
  79#define TWL4030_BASEADD_GPIO            0x0098
  80#define TWL4030_BASEADD_INTBR           0x0085
  81#define TWL4030_BASEADD_PIH             0x0080
  82#define TWL4030_BASEADD_TEST            0x004C
  83
  84/* subchip/slave 2 - AUX ID */
  85#define TWL4030_BASEADD_INTERRUPTS      0x00B9
  86#define TWL4030_BASEADD_LED             0x00EE
  87#define TWL4030_BASEADD_MADC            0x0000
  88#define TWL4030_BASEADD_MAIN_CHARGE     0x0074
  89#define TWL4030_BASEADD_PRECHARGE       0x00AA
  90#define TWL4030_BASEADD_PWM             0x00F8
  91#define TWL4030_BASEADD_KEYPAD          0x00D2
  92
  93#define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
  94#define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
  95                                                  one */
  96
  97/* subchip/slave 3 - POWER ID */
  98#define TWL4030_BASEADD_BACKUP          0x0014
  99#define TWL4030_BASEADD_INT             0x002E
 100#define TWL4030_BASEADD_PM_MASTER       0x0036
 101#define TWL4030_BASEADD_PM_RECEIVER     0x005B
 102#define TWL4030_BASEADD_RTC             0x001C
 103#define TWL4030_BASEADD_SECURED_REG     0x0000
 104
 105/* Triton Core internal information (END) */
 106
 107
 108/* subchip/slave 0 0x48 - POWER */
 109#define TWL6030_BASEADD_RTC             0x0000
 110#define TWL6030_BASEADD_SECURED_REG     0x0017
 111#define TWL6030_BASEADD_PM_MASTER       0x001F
 112#define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 113#define TWL6030_BASEADD_PM_MISC         0x00E2
 114#define TWL6030_BASEADD_PM_PUPD         0x00F0
 115
 116/* subchip/slave 1 0x49 - FEATURE */
 117#define TWL6030_BASEADD_USB             0x0000
 118#define TWL6030_BASEADD_GPADC_CTRL      0x002E
 119#define TWL6030_BASEADD_AUX             0x0090
 120#define TWL6030_BASEADD_PWM             0x00BA
 121#define TWL6030_BASEADD_GASGAUGE        0x00C0
 122#define TWL6030_BASEADD_PIH             0x00D0
 123#define TWL6030_BASEADD_CHARGER         0x00E0
 124#define TWL6032_BASEADD_CHARGER         0x00DA
 125#define TWL6030_BASEADD_LED             0x00F4
 126
 127/* subchip/slave 2 0x4A - DFT */
 128#define TWL6030_BASEADD_DIEID           0x00C0
 129
 130/* subchip/slave 3 0x4B - AUDIO */
 131#define TWL6030_BASEADD_AUDIO           0x0000
 132#define TWL6030_BASEADD_RSV             0x0000
 133#define TWL6030_BASEADD_ZERO            0x0000
 134
 135/* Few power values */
 136#define R_CFG_BOOT                      0x05
 137
 138/* some fields in R_CFG_BOOT */
 139#define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 140#define HFCLK_FREQ_26_MHZ               (2 << 0)
 141#define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 142#define HIGH_PERF_SQ                    (1 << 3)
 143#define CK32K_LOWPWR_EN                 (1 << 7)
 144
 145/*----------------------------------------------------------------------*/
 146
 147/* Structure for each TWL4030/TWL6030 Slave */
 148struct twl_client {
 149        struct i2c_client *client;
 150        struct regmap *regmap;
 151};
 152
 153/* mapping the module id to slave id and base address */
 154struct twl_mapping {
 155        unsigned char sid;      /* Slave ID */
 156        unsigned char base;     /* base address */
 157};
 158
 159struct twl_private {
 160        bool ready; /* The core driver is ready to be used */
 161        u32 twl_idcode; /* TWL IDCODE Register value */
 162        unsigned int twl_id;
 163
 164        struct twl_mapping *twl_map;
 165        struct twl_client *twl_modules;
 166};
 167
 168static struct twl_private *twl_priv;
 169
 170static struct twl_mapping twl4030_map[] = {
 171        /*
 172         * NOTE:  don't change this table without updating the
 173         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 174         * so they continue to match the order in this table.
 175         */
 176
 177        /* Common IPs */
 178        { 0, TWL4030_BASEADD_USB },
 179        { 1, TWL4030_BASEADD_PIH },
 180        { 2, TWL4030_BASEADD_MAIN_CHARGE },
 181        { 3, TWL4030_BASEADD_PM_MASTER },
 182        { 3, TWL4030_BASEADD_PM_RECEIVER },
 183
 184        { 3, TWL4030_BASEADD_RTC },
 185        { 2, TWL4030_BASEADD_PWM },
 186        { 2, TWL4030_BASEADD_LED },
 187        { 3, TWL4030_BASEADD_SECURED_REG },
 188
 189        /* TWL4030 specific IPs */
 190        { 1, TWL4030_BASEADD_AUDIO_VOICE },
 191        { 1, TWL4030_BASEADD_GPIO },
 192        { 1, TWL4030_BASEADD_INTBR },
 193        { 1, TWL4030_BASEADD_TEST },
 194        { 2, TWL4030_BASEADD_KEYPAD },
 195
 196        { 2, TWL4030_BASEADD_MADC },
 197        { 2, TWL4030_BASEADD_INTERRUPTS },
 198        { 2, TWL4030_BASEADD_PRECHARGE },
 199        { 3, TWL4030_BASEADD_BACKUP },
 200        { 3, TWL4030_BASEADD_INT },
 201
 202        { 2, TWL5031_BASEADD_ACCESSORY },
 203        { 2, TWL5031_BASEADD_INTERRUPTS },
 204};
 205
 206static struct reg_default twl4030_49_defaults[] = {
 207        /* Audio Registers */
 208        { 0x01, 0x00}, /* CODEC_MODE    */
 209        { 0x02, 0x00}, /* OPTION        */
 210        /* 0x03  Unused */
 211        { 0x04, 0x00}, /* MICBIAS_CTL   */
 212        { 0x05, 0x00}, /* ANAMICL       */
 213        { 0x06, 0x00}, /* ANAMICR       */
 214        { 0x07, 0x00}, /* AVADC_CTL     */
 215        { 0x08, 0x00}, /* ADCMICSEL     */
 216        { 0x09, 0x00}, /* DIGMIXING     */
 217        { 0x0a, 0x0f}, /* ATXL1PGA      */
 218        { 0x0b, 0x0f}, /* ATXR1PGA      */
 219        { 0x0c, 0x0f}, /* AVTXL2PGA     */
 220        { 0x0d, 0x0f}, /* AVTXR2PGA     */
 221        { 0x0e, 0x00}, /* AUDIO_IF      */
 222        { 0x0f, 0x00}, /* VOICE_IF      */
 223        { 0x10, 0x3f}, /* ARXR1PGA      */
 224        { 0x11, 0x3f}, /* ARXL1PGA      */
 225        { 0x12, 0x3f}, /* ARXR2PGA      */
 226        { 0x13, 0x3f}, /* ARXL2PGA      */
 227        { 0x14, 0x25}, /* VRXPGA        */
 228        { 0x15, 0x00}, /* VSTPGA        */
 229        { 0x16, 0x00}, /* VRX2ARXPGA    */
 230        { 0x17, 0x00}, /* AVDAC_CTL     */
 231        { 0x18, 0x00}, /* ARX2VTXPGA    */
 232        { 0x19, 0x32}, /* ARXL1_APGA_CTL*/
 233        { 0x1a, 0x32}, /* ARXR1_APGA_CTL*/
 234        { 0x1b, 0x32}, /* ARXL2_APGA_CTL*/
 235        { 0x1c, 0x32}, /* ARXR2_APGA_CTL*/
 236        { 0x1d, 0x00}, /* ATX2ARXPGA    */
 237        { 0x1e, 0x00}, /* BT_IF         */
 238        { 0x1f, 0x55}, /* BTPGA         */
 239        { 0x20, 0x00}, /* BTSTPGA       */
 240        { 0x21, 0x00}, /* EAR_CTL       */
 241        { 0x22, 0x00}, /* HS_SEL        */
 242        { 0x23, 0x00}, /* HS_GAIN_SET   */
 243        { 0x24, 0x00}, /* HS_POPN_SET   */
 244        { 0x25, 0x00}, /* PREDL_CTL     */
 245        { 0x26, 0x00}, /* PREDR_CTL     */
 246        { 0x27, 0x00}, /* PRECKL_CTL    */
 247        { 0x28, 0x00}, /* PRECKR_CTL    */
 248        { 0x29, 0x00}, /* HFL_CTL       */
 249        { 0x2a, 0x00}, /* HFR_CTL       */
 250        { 0x2b, 0x05}, /* ALC_CTL       */
 251        { 0x2c, 0x00}, /* ALC_SET1      */
 252        { 0x2d, 0x00}, /* ALC_SET2      */
 253        { 0x2e, 0x00}, /* BOOST_CTL     */
 254        { 0x2f, 0x00}, /* SOFTVOL_CTL   */
 255        { 0x30, 0x13}, /* DTMF_FREQSEL  */
 256        { 0x31, 0x00}, /* DTMF_TONEXT1H */
 257        { 0x32, 0x00}, /* DTMF_TONEXT1L */
 258        { 0x33, 0x00}, /* DTMF_TONEXT2H */
 259        { 0x34, 0x00}, /* DTMF_TONEXT2L */
 260        { 0x35, 0x79}, /* DTMF_TONOFF   */
 261        { 0x36, 0x11}, /* DTMF_WANONOFF */
 262        { 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */
 263        { 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */
 264        { 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */
 265        { 0x3a, 0x06}, /* APLL_CTL */
 266        { 0x3b, 0x00}, /* DTMF_CTL */
 267        { 0x3c, 0x44}, /* DTMF_PGA_CTL2 (0x3C) */
 268        { 0x3d, 0x69}, /* DTMF_PGA_CTL1 (0x3D) */
 269        { 0x3e, 0x00}, /* MISC_SET_1 */
 270        { 0x3f, 0x00}, /* PCMBTMUX */
 271        /* 0x40 - 0x42  Unused */
 272        { 0x43, 0x00}, /* RX_PATH_SEL */
 273        { 0x44, 0x32}, /* VDL_APGA_CTL */
 274        { 0x45, 0x00}, /* VIBRA_CTL */
 275        { 0x46, 0x00}, /* VIBRA_SET */
 276        { 0x47, 0x00}, /* VIBRA_PWM_SET */
 277        { 0x48, 0x00}, /* ANAMIC_GAIN   */
 278        { 0x49, 0x00}, /* MISC_SET_2    */
 279        /* End of Audio Registers */
 280};
 281
 282static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg)
 283{
 284        switch (reg) {
 285        case 0:
 286        case 3:
 287        case 40:
 288        case 41:
 289        case 42:
 290                return false;
 291        default:
 292                return true;
 293        }
 294}
 295
 296static const struct regmap_range twl4030_49_volatile_ranges[] = {
 297        regmap_reg_range(TWL4030_BASEADD_TEST, 0xff),
 298};
 299
 300static const struct regmap_access_table twl4030_49_volatile_table = {
 301        .yes_ranges = twl4030_49_volatile_ranges,
 302        .n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges),
 303};
 304
 305static struct regmap_config twl4030_regmap_config[4] = {
 306        {
 307                /* Address 0x48 */
 308                .reg_bits = 8,
 309                .val_bits = 8,
 310                .max_register = 0xff,
 311        },
 312        {
 313                /* Address 0x49 */
 314                .reg_bits = 8,
 315                .val_bits = 8,
 316                .max_register = 0xff,
 317
 318                .readable_reg = twl4030_49_nop_reg,
 319                .writeable_reg = twl4030_49_nop_reg,
 320
 321                .volatile_table = &twl4030_49_volatile_table,
 322
 323                .reg_defaults = twl4030_49_defaults,
 324                .num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults),
 325                .cache_type = REGCACHE_RBTREE,
 326        },
 327        {
 328                /* Address 0x4a */
 329                .reg_bits = 8,
 330                .val_bits = 8,
 331                .max_register = 0xff,
 332        },
 333        {
 334                /* Address 0x4b */
 335                .reg_bits = 8,
 336                .val_bits = 8,
 337                .max_register = 0xff,
 338        },
 339};
 340
 341static struct twl_mapping twl6030_map[] = {
 342        /*
 343         * NOTE:  don't change this table without updating the
 344         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 345         * so they continue to match the order in this table.
 346         */
 347
 348        /* Common IPs */
 349        { 1, TWL6030_BASEADD_USB },
 350        { 1, TWL6030_BASEADD_PIH },
 351        { 1, TWL6030_BASEADD_CHARGER },
 352        { 0, TWL6030_BASEADD_PM_MASTER },
 353        { 0, TWL6030_BASEADD_PM_SLAVE_MISC },
 354
 355        { 0, TWL6030_BASEADD_RTC },
 356        { 1, TWL6030_BASEADD_PWM },
 357        { 1, TWL6030_BASEADD_LED },
 358        { 0, TWL6030_BASEADD_SECURED_REG },
 359
 360        /* TWL6030 specific IPs */
 361        { 0, TWL6030_BASEADD_ZERO },
 362        { 1, TWL6030_BASEADD_ZERO },
 363        { 2, TWL6030_BASEADD_ZERO },
 364        { 1, TWL6030_BASEADD_GPADC_CTRL },
 365        { 1, TWL6030_BASEADD_GASGAUGE },
 366};
 367
 368static struct regmap_config twl6030_regmap_config[3] = {
 369        {
 370                /* Address 0x48 */
 371                .reg_bits = 8,
 372                .val_bits = 8,
 373                .max_register = 0xff,
 374        },
 375        {
 376                /* Address 0x49 */
 377                .reg_bits = 8,
 378                .val_bits = 8,
 379                .max_register = 0xff,
 380        },
 381        {
 382                /* Address 0x4a */
 383                .reg_bits = 8,
 384                .val_bits = 8,
 385                .max_register = 0xff,
 386        },
 387};
 388
 389/*----------------------------------------------------------------------*/
 390
 391static inline int twl_get_num_slaves(void)
 392{
 393        if (twl_class_is_4030())
 394                return 4; /* TWL4030 class have four slave address */
 395        else
 396                return 3; /* TWL6030 class have three slave address */
 397}
 398
 399static inline int twl_get_last_module(void)
 400{
 401        if (twl_class_is_4030())
 402                return TWL4030_MODULE_LAST;
 403        else
 404                return TWL6030_MODULE_LAST;
 405}
 406
 407/* Exported Functions */
 408
 409unsigned int twl_rev(void)
 410{
 411        return twl_priv ? twl_priv->twl_id : 0;
 412}
 413EXPORT_SYMBOL(twl_rev);
 414
 415/**
 416 * twl_get_regmap - Get the regmap associated with the given module
 417 * @mod_no: module number
 418 *
 419 * Returns the regmap pointer or NULL in case of failure.
 420 */
 421static struct regmap *twl_get_regmap(u8 mod_no)
 422{
 423        int sid;
 424        struct twl_client *twl;
 425
 426        if (unlikely(!twl_priv || !twl_priv->ready)) {
 427                pr_err("%s: not initialized\n", DRIVER_NAME);
 428                return NULL;
 429        }
 430        if (unlikely(mod_no >= twl_get_last_module())) {
 431                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 432                return NULL;
 433        }
 434
 435        sid = twl_priv->twl_map[mod_no].sid;
 436        twl = &twl_priv->twl_modules[sid];
 437
 438        return twl->regmap;
 439}
 440
 441/**
 442 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 443 * @mod_no: module number
 444 * @value: an array of num_bytes+1 containing data to write
 445 * @reg: register address (just offset will do)
 446 * @num_bytes: number of bytes to transfer
 447 *
 448 * Returns the result of operation - 0 is success
 449 */
 450int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 451{
 452        struct regmap *regmap = twl_get_regmap(mod_no);
 453        int ret;
 454
 455        if (!regmap)
 456                return -EPERM;
 457
 458        ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg,
 459                                value, num_bytes);
 460
 461        if (ret)
 462                pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
 463                       DRIVER_NAME, mod_no, reg, num_bytes);
 464
 465        return ret;
 466}
 467EXPORT_SYMBOL(twl_i2c_write);
 468
 469/**
 470 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 471 * @mod_no: module number
 472 * @value: an array of num_bytes containing data to be read
 473 * @reg: register address (just offset will do)
 474 * @num_bytes: number of bytes to transfer
 475 *
 476 * Returns result of operation - num_bytes is success else failure.
 477 */
 478int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 479{
 480        struct regmap *regmap = twl_get_regmap(mod_no);
 481        int ret;
 482
 483        if (!regmap)
 484                return -EPERM;
 485
 486        ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg,
 487                               value, num_bytes);
 488
 489        if (ret)
 490                pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
 491                       DRIVER_NAME, mod_no, reg, num_bytes);
 492
 493        return ret;
 494}
 495EXPORT_SYMBOL(twl_i2c_read);
 496
 497/**
 498 * twl_regcache_bypass - Configure the regcache bypass for the regmap associated
 499 *                       with the module
 500 * @mod_no: module number
 501 * @enable: Regcache bypass state
 502 *
 503 * Returns 0 else failure.
 504 */
 505int twl_set_regcache_bypass(u8 mod_no, bool enable)
 506{
 507        struct regmap *regmap = twl_get_regmap(mod_no);
 508
 509        if (!regmap)
 510                return -EPERM;
 511
 512        regcache_cache_bypass(regmap, enable);
 513
 514        return 0;
 515}
 516EXPORT_SYMBOL(twl_set_regcache_bypass);
 517
 518/*----------------------------------------------------------------------*/
 519
 520/**
 521 * twl_read_idcode_register - API to read the IDCODE register.
 522 *
 523 * Unlocks the IDCODE register and read the 32 bit value.
 524 */
 525static int twl_read_idcode_register(void)
 526{
 527        int err;
 528
 529        err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 530                                                REG_UNLOCK_TEST_REG);
 531        if (err) {
 532                pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 533                goto fail;
 534        }
 535
 536        err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),
 537                                                REG_IDCODE_7_0, 4);
 538        if (err) {
 539                pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 540                goto fail;
 541        }
 542
 543        err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 544        if (err)
 545                pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 546fail:
 547        return err;
 548}
 549
 550/**
 551 * twl_get_type - API to get TWL Si type.
 552 *
 553 * Api to get the TWL Si type from IDCODE value.
 554 */
 555int twl_get_type(void)
 556{
 557        return TWL_SIL_TYPE(twl_priv->twl_idcode);
 558}
 559EXPORT_SYMBOL_GPL(twl_get_type);
 560
 561/**
 562 * twl_get_version - API to get TWL Si version.
 563 *
 564 * Api to get the TWL Si version from IDCODE value.
 565 */
 566int twl_get_version(void)
 567{
 568        return TWL_SIL_REV(twl_priv->twl_idcode);
 569}
 570EXPORT_SYMBOL_GPL(twl_get_version);
 571
 572/**
 573 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
 574 *
 575 * Api to get the TWL HFCLK rate based on BOOT_CFG register.
 576 */
 577int twl_get_hfclk_rate(void)
 578{
 579        u8 ctrl;
 580        int rate;
 581
 582        twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
 583
 584        switch (ctrl & 0x3) {
 585        case HFCLK_FREQ_19p2_MHZ:
 586                rate = 19200000;
 587                break;
 588        case HFCLK_FREQ_26_MHZ:
 589                rate = 26000000;
 590                break;
 591        case HFCLK_FREQ_38p4_MHZ:
 592                rate = 38400000;
 593                break;
 594        default:
 595                pr_err("TWL4030: HFCLK is not configured\n");
 596                rate = -EINVAL;
 597                break;
 598        }
 599
 600        return rate;
 601}
 602EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
 603
 604static struct device *
 605add_numbered_child(unsigned mod_no, const char *name, int num,
 606                void *pdata, unsigned pdata_len,
 607                bool can_wakeup, int irq0, int irq1)
 608{
 609        struct platform_device  *pdev;
 610        struct twl_client       *twl;
 611        int                     status, sid;
 612
 613        if (unlikely(mod_no >= twl_get_last_module())) {
 614                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 615                return ERR_PTR(-EPERM);
 616        }
 617        sid = twl_priv->twl_map[mod_no].sid;
 618        twl = &twl_priv->twl_modules[sid];
 619
 620        pdev = platform_device_alloc(name, num);
 621        if (!pdev) {
 622                dev_dbg(&twl->client->dev, "can't alloc dev\n");
 623                status = -ENOMEM;
 624                goto err;
 625        }
 626
 627        pdev->dev.parent = &twl->client->dev;
 628
 629        if (pdata) {
 630                status = platform_device_add_data(pdev, pdata, pdata_len);
 631                if (status < 0) {
 632                        dev_dbg(&pdev->dev, "can't add platform_data\n");
 633                        goto err;
 634                }
 635        }
 636
 637        if (irq0) {
 638                struct resource r[2] = {
 639                        { .start = irq0, .flags = IORESOURCE_IRQ, },
 640                        { .start = irq1, .flags = IORESOURCE_IRQ, },
 641                };
 642
 643                status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 644                if (status < 0) {
 645                        dev_dbg(&pdev->dev, "can't add irqs\n");
 646                        goto err;
 647                }
 648        }
 649
 650        status = platform_device_add(pdev);
 651        if (status == 0)
 652                device_init_wakeup(&pdev->dev, can_wakeup);
 653
 654err:
 655        if (status < 0) {
 656                platform_device_put(pdev);
 657                dev_err(&twl->client->dev, "can't add %s dev\n", name);
 658                return ERR_PTR(status);
 659        }
 660        return &pdev->dev;
 661}
 662
 663static inline struct device *add_child(unsigned mod_no, const char *name,
 664                void *pdata, unsigned pdata_len,
 665                bool can_wakeup, int irq0, int irq1)
 666{
 667        return add_numbered_child(mod_no, name, -1, pdata, pdata_len,
 668                can_wakeup, irq0, irq1);
 669}
 670
 671static struct device *
 672add_regulator_linked(int num, struct regulator_init_data *pdata,
 673                struct regulator_consumer_supply *consumers,
 674                unsigned num_consumers, unsigned long features)
 675{
 676        struct twl_regulator_driver_data drv_data;
 677
 678        /* regulator framework demands init_data ... */
 679        if (!pdata)
 680                return NULL;
 681
 682        if (consumers) {
 683                pdata->consumer_supplies = consumers;
 684                pdata->num_consumer_supplies = num_consumers;
 685        }
 686
 687        if (pdata->driver_data) {
 688                /* If we have existing drv_data, just add the flags */
 689                struct twl_regulator_driver_data *tmp;
 690                tmp = pdata->driver_data;
 691                tmp->features |= features;
 692        } else {
 693                /* add new driver data struct, used only during init */
 694                drv_data.features = features;
 695                drv_data.set_voltage = NULL;
 696                drv_data.get_voltage = NULL;
 697                drv_data.data = NULL;
 698                pdata->driver_data = &drv_data;
 699        }
 700
 701        /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 702        return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num,
 703                pdata, sizeof(*pdata), false, 0, 0);
 704}
 705
 706static struct device *
 707add_regulator(int num, struct regulator_init_data *pdata,
 708                unsigned long features)
 709{
 710        return add_regulator_linked(num, pdata, NULL, 0, features);
 711}
 712
 713/*
 714 * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 715 * for the PIH, and the next are for the PWR_INT SIH, since
 716 * that's how twl_init_irq() sets things up.
 717 */
 718
 719static int
 720add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
 721                unsigned long features)
 722{
 723        struct device   *child;
 724
 725        if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
 726                child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio",
 727                                pdata->gpio, sizeof(*pdata->gpio),
 728                                false, irq_base + GPIO_INTR_OFFSET, 0);
 729                if (IS_ERR(child))
 730                        return PTR_ERR(child);
 731        }
 732
 733        if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
 734                child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad",
 735                                pdata->keypad, sizeof(*pdata->keypad),
 736                                true, irq_base + KEYPAD_INTR_OFFSET, 0);
 737                if (IS_ERR(child))
 738                        return PTR_ERR(child);
 739        }
 740
 741        if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&
 742            twl_class_is_4030()) {
 743                child = add_child(TWL4030_MODULE_MADC, "twl4030_madc",
 744                                pdata->madc, sizeof(*pdata->madc),
 745                                true, irq_base + MADC_INTR_OFFSET, 0);
 746                if (IS_ERR(child))
 747                        return PTR_ERR(child);
 748        }
 749
 750        if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
 751                /*
 752                 * REVISIT platform_data here currently might expose the
 753                 * "msecure" line ... but for now we just expect board
 754                 * setup to tell the chip "it's always ok to SET_TIME".
 755                 * Eventually, Linux might become more aware of such
 756                 * HW security concerns, and "least privilege".
 757                 */
 758                child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0,
 759                                true, irq_base + RTC_INTR_OFFSET, 0);
 760                if (IS_ERR(child))
 761                        return PTR_ERR(child);
 762        }
 763
 764        if (IS_ENABLED(CONFIG_PWM_TWL)) {
 765                child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0,
 766                                  false, 0, 0);
 767                if (IS_ERR(child))
 768                        return PTR_ERR(child);
 769        }
 770
 771        if (IS_ENABLED(CONFIG_PWM_TWL_LED)) {
 772                child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0,
 773                                  false, 0, 0);
 774                if (IS_ERR(child))
 775                        return PTR_ERR(child);
 776        }
 777
 778        if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
 779            twl_class_is_4030()) {
 780
 781                static struct regulator_consumer_supply usb1v5 = {
 782                        .supply =       "usb1v5",
 783                };
 784                static struct regulator_consumer_supply usb1v8 = {
 785                        .supply =       "usb1v8",
 786                };
 787                static struct regulator_consumer_supply usb3v1[] = {
 788                        { .supply =     "usb3v1" },
 789                        { .supply =     "bci3v1" },
 790                };
 791
 792        /* First add the regulators so that they can be used by transceiver */
 793                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 794                        /* this is a template that gets copied */
 795                        struct regulator_init_data usb_fixed = {
 796                                .constraints.valid_modes_mask =
 797                                        REGULATOR_MODE_NORMAL
 798                                        | REGULATOR_MODE_STANDBY,
 799                                .constraints.valid_ops_mask =
 800                                        REGULATOR_CHANGE_MODE
 801                                        | REGULATOR_CHANGE_STATUS,
 802                        };
 803
 804                        child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 805                                                      &usb_fixed, &usb1v5, 1,
 806                                                      features);
 807                        if (IS_ERR(child))
 808                                return PTR_ERR(child);
 809
 810                        child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 811                                                      &usb_fixed, &usb1v8, 1,
 812                                                      features);
 813                        if (IS_ERR(child))
 814                                return PTR_ERR(child);
 815
 816                        child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 817                                                      &usb_fixed, usb3v1, 2,
 818                                                      features);
 819                        if (IS_ERR(child))
 820                                return PTR_ERR(child);
 821
 822                }
 823
 824                child = add_child(TWL_MODULE_USB, "twl4030_usb",
 825                                pdata->usb, sizeof(*pdata->usb), true,
 826                                /* irq0 = USB_PRES, irq1 = USB */
 827                                irq_base + USB_PRES_INTR_OFFSET,
 828                                irq_base + USB_INTR_OFFSET);
 829
 830                if (IS_ERR(child))
 831                        return PTR_ERR(child);
 832
 833                /* we need to connect regulators to this transceiver */
 834                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
 835                        usb1v5.dev_name = dev_name(child);
 836                        usb1v8.dev_name = dev_name(child);
 837                        usb3v1[0].dev_name = dev_name(child);
 838                }
 839        }
 840
 841        if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
 842                child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL,
 843                                  0, false, 0, 0);
 844                if (IS_ERR(child))
 845                        return PTR_ERR(child);
 846        }
 847
 848        if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
 849                child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton",
 850                                  NULL, 0, true, irq_base + 8 + 0, 0);
 851                if (IS_ERR(child))
 852                        return PTR_ERR(child);
 853        }
 854
 855        if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
 856            twl_class_is_4030()) {
 857                child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio",
 858                                pdata->audio, sizeof(*pdata->audio),
 859                                false, 0, 0);
 860                if (IS_ERR(child))
 861                        return PTR_ERR(child);
 862        }
 863
 864        /* twl4030 regulators */
 865        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
 866                child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 867                                        features);
 868                if (IS_ERR(child))
 869                        return PTR_ERR(child);
 870
 871                child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 872                                        features);
 873                if (IS_ERR(child))
 874                        return PTR_ERR(child);
 875
 876                child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 877                                        features);
 878                if (IS_ERR(child))
 879                        return PTR_ERR(child);
 880
 881                child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 882                                        features);
 883                if (IS_ERR(child))
 884                        return PTR_ERR(child);
 885
 886                child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 887                                        features);
 888                if (IS_ERR(child))
 889                        return PTR_ERR(child);
 890
 891                child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 892                                        features);
 893                if (IS_ERR(child))
 894                        return PTR_ERR(child);
 895
 896                child = add_regulator((features & TWL4030_VAUX2)
 897                                        ? TWL4030_REG_VAUX2_4030
 898                                        : TWL4030_REG_VAUX2,
 899                                pdata->vaux2, features);
 900                if (IS_ERR(child))
 901                        return PTR_ERR(child);
 902
 903                child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 904                                        features);
 905                if (IS_ERR(child))
 906                        return PTR_ERR(child);
 907
 908                child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 909                                        features);
 910                if (IS_ERR(child))
 911                        return PTR_ERR(child);
 912
 913                child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 914                                        features);
 915                if (IS_ERR(child))
 916                        return PTR_ERR(child);
 917        }
 918
 919        /* maybe add LDOs that are omitted on cost-reduced parts */
 920        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
 921          && twl_class_is_4030()) {
 922                child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 923                                        features);
 924                if (IS_ERR(child))
 925                        return PTR_ERR(child);
 926
 927                child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 928                                        features);
 929                if (IS_ERR(child))
 930                        return PTR_ERR(child);
 931
 932                child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 933                                        features);
 934                if (IS_ERR(child))
 935                        return PTR_ERR(child);
 936
 937                child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 938                                        features);
 939                if (IS_ERR(child))
 940                        return PTR_ERR(child);
 941
 942                child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 943                                        features);
 944                if (IS_ERR(child))
 945                        return PTR_ERR(child);
 946
 947                child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 948                                        features);
 949                if (IS_ERR(child))
 950                        return PTR_ERR(child);
 951        }
 952
 953        if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
 954                        !(features & (TPS_SUBSET | TWL5031))) {
 955                child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci",
 956                                pdata->bci, sizeof(*pdata->bci), false,
 957                                /* irq0 = CHG_PRES, irq1 = BCI */
 958                                irq_base + BCI_PRES_INTR_OFFSET,
 959                                irq_base + BCI_INTR_OFFSET);
 960                if (IS_ERR(child))
 961                        return PTR_ERR(child);
 962        }
 963
 964        if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) {
 965                child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power",
 966                                  pdata->power, sizeof(*pdata->power), false,
 967                                  0, 0);
 968                if (IS_ERR(child))
 969                        return PTR_ERR(child);
 970        }
 971
 972        return 0;
 973}
 974
 975/*----------------------------------------------------------------------*/
 976
 977/*
 978 * These three functions initialize the on-chip clock framework,
 979 * letting it generate the right frequencies for USB, MADC, and
 980 * other purposes.
 981 */
 982static inline int __init protect_pm_master(void)
 983{
 984        int e = 0;
 985
 986        e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
 987                             TWL4030_PM_MASTER_PROTECT_KEY);
 988        return e;
 989}
 990
 991static inline int __init unprotect_pm_master(void)
 992{
 993        int e = 0;
 994
 995        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
 996                              TWL4030_PM_MASTER_PROTECT_KEY);
 997        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
 998                              TWL4030_PM_MASTER_PROTECT_KEY);
 999
1000        return e;
1001}
1002
1003static void clocks_init(struct device *dev,
1004                        struct twl4030_clock_init_data *clock)
1005{
1006        int e = 0;
1007        struct clk *osc;
1008        u32 rate;
1009        u8 ctrl = HFCLK_FREQ_26_MHZ;
1010
1011        osc = clk_get(dev, "fck");
1012        if (IS_ERR(osc)) {
1013                printk(KERN_WARNING "Skipping twl internal clock init and "
1014                                "using bootloader value (unknown osc rate)\n");
1015                return;
1016        }
1017
1018        rate = clk_get_rate(osc);
1019        clk_put(osc);
1020
1021        switch (rate) {
1022        case 19200000:
1023                ctrl = HFCLK_FREQ_19p2_MHZ;
1024                break;
1025        case 26000000:
1026                ctrl = HFCLK_FREQ_26_MHZ;
1027                break;
1028        case 38400000:
1029                ctrl = HFCLK_FREQ_38p4_MHZ;
1030                break;
1031        }
1032
1033        ctrl |= HIGH_PERF_SQ;
1034        if (clock && clock->ck32k_lowpwr_enable)
1035                ctrl |= CK32K_LOWPWR_EN;
1036
1037        e |= unprotect_pm_master();
1038        /* effect->MADC+USB ck en */
1039        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1040        e |= protect_pm_master();
1041
1042        if (e < 0)
1043                pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1044}
1045
1046/*----------------------------------------------------------------------*/
1047
1048
1049static int twl_remove(struct i2c_client *client)
1050{
1051        unsigned i, num_slaves;
1052        int status;
1053
1054        if (twl_class_is_4030())
1055                status = twl4030_exit_irq();
1056        else
1057                status = twl6030_exit_irq();
1058
1059        if (status < 0)
1060                return status;
1061
1062        num_slaves = twl_get_num_slaves();
1063        for (i = 0; i < num_slaves; i++) {
1064                struct twl_client       *twl = &twl_priv->twl_modules[i];
1065
1066                if (twl->client && twl->client != client)
1067                        i2c_unregister_device(twl->client);
1068                twl->client = NULL;
1069        }
1070        twl_priv->ready = false;
1071        return 0;
1072}
1073
1074static struct of_dev_auxdata twl_auxdata_lookup[] = {
1075        OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL),
1076        { /* sentinel */ },
1077};
1078
1079/* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1080static int
1081twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1082{
1083        struct twl4030_platform_data    *pdata = dev_get_platdata(&client->dev);
1084        struct device_node              *node = client->dev.of_node;
1085        struct platform_device          *pdev;
1086        struct regmap_config            *twl_regmap_config;
1087        int                             irq_base = 0;
1088        int                             status;
1089        unsigned                        i, num_slaves;
1090
1091        if (!node && !pdata) {
1092                dev_err(&client->dev, "no platform data\n");
1093                return -EINVAL;
1094        }
1095
1096        if (twl_priv) {
1097                dev_dbg(&client->dev, "only one instance of %s allowed\n",
1098                        DRIVER_NAME);
1099                return -EBUSY;
1100        }
1101
1102        pdev = platform_device_alloc(DRIVER_NAME, -1);
1103        if (!pdev) {
1104                dev_err(&client->dev, "can't alloc pdev\n");
1105                return -ENOMEM;
1106        }
1107
1108        status = platform_device_add(pdev);
1109        if (status) {
1110                platform_device_put(pdev);
1111                return status;
1112        }
1113
1114        if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1115                dev_dbg(&client->dev, "can't talk I2C?\n");
1116                status = -EIO;
1117                goto free;
1118        }
1119
1120        twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),
1121                                GFP_KERNEL);
1122        if (!twl_priv) {
1123                status = -ENOMEM;
1124                goto free;
1125        }
1126
1127        if ((id->driver_data) & TWL6030_CLASS) {
1128                twl_priv->twl_id = TWL6030_CLASS_ID;
1129                twl_priv->twl_map = &twl6030_map[0];
1130                /* The charger base address is different in twl6032 */
1131                if ((id->driver_data) & TWL6032_SUBCLASS)
1132                        twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =
1133                                                        TWL6032_BASEADD_CHARGER;
1134                twl_regmap_config = twl6030_regmap_config;
1135        } else {
1136                twl_priv->twl_id = TWL4030_CLASS_ID;
1137                twl_priv->twl_map = &twl4030_map[0];
1138                twl_regmap_config = twl4030_regmap_config;
1139        }
1140
1141        num_slaves = twl_get_num_slaves();
1142        twl_priv->twl_modules = devm_kzalloc(&client->dev,
1143                                         sizeof(struct twl_client) * num_slaves,
1144                                         GFP_KERNEL);
1145        if (!twl_priv->twl_modules) {
1146                status = -ENOMEM;
1147                goto free;
1148        }
1149
1150        for (i = 0; i < num_slaves; i++) {
1151                struct twl_client *twl = &twl_priv->twl_modules[i];
1152
1153                if (i == 0) {
1154                        twl->client = client;
1155                } else {
1156                        twl->client = i2c_new_dummy(client->adapter,
1157                                                    client->addr + i);
1158                        if (!twl->client) {
1159                                dev_err(&client->dev,
1160                                        "can't attach client %d\n", i);
1161                                status = -ENOMEM;
1162                                goto fail;
1163                        }
1164                }
1165
1166                twl->regmap = devm_regmap_init_i2c(twl->client,
1167                                                   &twl_regmap_config[i]);
1168                if (IS_ERR(twl->regmap)) {
1169                        status = PTR_ERR(twl->regmap);
1170                        dev_err(&client->dev,
1171                                "Failed to allocate regmap %d, err: %d\n", i,
1172                                status);
1173                        goto fail;
1174                }
1175        }
1176
1177        twl_priv->ready = true;
1178
1179        /* setup clock framework */
1180        clocks_init(&pdev->dev, pdata ? pdata->clock : NULL);
1181
1182        /* read TWL IDCODE Register */
1183        if (twl_class_is_4030()) {
1184                status = twl_read_idcode_register();
1185                WARN(status < 0, "Error: reading twl_idcode register value\n");
1186        }
1187
1188        /* Maybe init the T2 Interrupt subsystem */
1189        if (client->irq) {
1190                if (twl_class_is_4030()) {
1191                        twl4030_init_chip_irq(id->name);
1192                        irq_base = twl4030_init_irq(&client->dev, client->irq);
1193                } else {
1194                        irq_base = twl6030_init_irq(&client->dev, client->irq);
1195                }
1196
1197                if (irq_base < 0) {
1198                        status = irq_base;
1199                        goto fail;
1200                }
1201        }
1202
1203        /*
1204         * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1205         * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1206         * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1207         */
1208        if (twl_class_is_4030()) {
1209                u8 temp;
1210
1211                twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1212                temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1213                        I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1214                twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1215        }
1216
1217        if (node) {
1218                if (pdata)
1219                        twl_auxdata_lookup[0].platform_data = pdata->gpio;
1220                status = of_platform_populate(node, NULL, twl_auxdata_lookup,
1221                                              &client->dev);
1222        } else {
1223                status = add_children(pdata, irq_base, id->driver_data);
1224        }
1225
1226fail:
1227        if (status < 0)
1228                twl_remove(client);
1229free:
1230        if (status < 0)
1231                platform_device_unregister(pdev);
1232
1233        return status;
1234}
1235
1236static const struct i2c_device_id twl_ids[] = {
1237        { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1238        { "twl5030", 0 },               /* T2 updated */
1239        { "twl5031", TWL5031 },         /* TWL5030 updated */
1240        { "tps65950", 0 },              /* catalog version of twl5030 */
1241        { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1242        { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1243        { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1244                                           and vibrator. Charger in USB module*/
1245        { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1246        { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */
1247        { /* end of list */ },
1248};
1249MODULE_DEVICE_TABLE(i2c, twl_ids);
1250
1251/* One Client Driver , 4 Clients */
1252static struct i2c_driver twl_driver = {
1253        .driver.name    = DRIVER_NAME,
1254        .id_table       = twl_ids,
1255        .probe          = twl_probe,
1256        .remove         = twl_remove,
1257};
1258
1259module_i2c_driver(twl_driver);
1260
1261MODULE_AUTHOR("Texas Instruments, Inc.");
1262MODULE_DESCRIPTION("I2C Core interface for TWL");
1263MODULE_LICENSE("GPL");
1264