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#include "twl-core.h"
  51
  52/*
  53 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  54 * Management and System Companion Device" chips originally designed for
  55 * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  56 * often at around 3 Mbit/sec, including for interrupt handling.
  57 *
  58 * This driver core provides genirq support for the interrupts emitted,
  59 * by the various modules, and exports register access primitives.
  60 *
  61 * FIXME this driver currently requires use of the first interrupt line
  62 * (and associated registers).
  63 */
  64
  65#define DRIVER_NAME                     "twl"
  66
  67/* Triton Core internal information (BEGIN) */
  68
  69/* Base Address defns for twl4030_map[] */
  70
  71/* subchip/slave 0 - USB ID */
  72#define TWL4030_BASEADD_USB             0x0000
  73
  74/* subchip/slave 1 - AUD ID */
  75#define TWL4030_BASEADD_AUDIO_VOICE     0x0000
  76#define TWL4030_BASEADD_GPIO            0x0098
  77#define TWL4030_BASEADD_INTBR           0x0085
  78#define TWL4030_BASEADD_PIH             0x0080
  79#define TWL4030_BASEADD_TEST            0x004C
  80
  81/* subchip/slave 2 - AUX ID */
  82#define TWL4030_BASEADD_INTERRUPTS      0x00B9
  83#define TWL4030_BASEADD_LED             0x00EE
  84#define TWL4030_BASEADD_MADC            0x0000
  85#define TWL4030_BASEADD_MAIN_CHARGE     0x0074
  86#define TWL4030_BASEADD_PRECHARGE       0x00AA
  87#define TWL4030_BASEADD_PWM             0x00F8
  88#define TWL4030_BASEADD_KEYPAD          0x00D2
  89
  90#define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
  91#define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
  92                                                  one */
  93
  94/* subchip/slave 3 - POWER ID */
  95#define TWL4030_BASEADD_BACKUP          0x0014
  96#define TWL4030_BASEADD_INT             0x002E
  97#define TWL4030_BASEADD_PM_MASTER       0x0036
  98#define TWL4030_BASEADD_PM_RECEIVER     0x005B
  99#define TWL4030_BASEADD_RTC             0x001C
 100#define TWL4030_BASEADD_SECURED_REG     0x0000
 101
 102/* Triton Core internal information (END) */
 103
 104
 105/* subchip/slave 0 0x48 - POWER */
 106#define TWL6030_BASEADD_RTC             0x0000
 107#define TWL6030_BASEADD_SECURED_REG     0x0017
 108#define TWL6030_BASEADD_PM_MASTER       0x001F
 109#define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 110#define TWL6030_BASEADD_PM_MISC         0x00E2
 111#define TWL6030_BASEADD_PM_PUPD         0x00F0
 112
 113/* subchip/slave 1 0x49 - FEATURE */
 114#define TWL6030_BASEADD_USB             0x0000
 115#define TWL6030_BASEADD_GPADC_CTRL      0x002E
 116#define TWL6030_BASEADD_AUX             0x0090
 117#define TWL6030_BASEADD_PWM             0x00BA
 118#define TWL6030_BASEADD_GASGAUGE        0x00C0
 119#define TWL6030_BASEADD_PIH             0x00D0
 120#define TWL6030_BASEADD_CHARGER         0x00E0
 121#define TWL6032_BASEADD_CHARGER         0x00DA
 122#define TWL6030_BASEADD_LED             0x00F4
 123
 124/* subchip/slave 2 0x4A - DFT */
 125#define TWL6030_BASEADD_DIEID           0x00C0
 126
 127/* subchip/slave 3 0x4B - AUDIO */
 128#define TWL6030_BASEADD_AUDIO           0x0000
 129#define TWL6030_BASEADD_RSV             0x0000
 130#define TWL6030_BASEADD_ZERO            0x0000
 131
 132/* Few power values */
 133#define R_CFG_BOOT                      0x05
 134
 135/* some fields in R_CFG_BOOT */
 136#define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 137#define HFCLK_FREQ_26_MHZ               (2 << 0)
 138#define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 139#define HIGH_PERF_SQ                    (1 << 3)
 140#define CK32K_LOWPWR_EN                 (1 << 7)
 141
 142/*----------------------------------------------------------------------*/
 143
 144/* Structure for each TWL4030/TWL6030 Slave */
 145struct twl_client {
 146        struct i2c_client *client;
 147        struct regmap *regmap;
 148};
 149
 150/* mapping the module id to slave id and base address */
 151struct twl_mapping {
 152        unsigned char sid;      /* Slave ID */
 153        unsigned char base;     /* base address */
 154};
 155
 156struct twl_private {
 157        bool ready; /* The core driver is ready to be used */
 158        u32 twl_idcode; /* TWL IDCODE Register value */
 159        unsigned int twl_id;
 160
 161        struct twl_mapping *twl_map;
 162        struct twl_client *twl_modules;
 163};
 164
 165static struct twl_private *twl_priv;
 166
 167static struct twl_mapping twl4030_map[] = {
 168        /*
 169         * NOTE:  don't change this table without updating the
 170         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 171         * so they continue to match the order in this table.
 172         */
 173
 174        /* Common IPs */
 175        { 0, TWL4030_BASEADD_USB },
 176        { 1, TWL4030_BASEADD_PIH },
 177        { 2, TWL4030_BASEADD_MAIN_CHARGE },
 178        { 3, TWL4030_BASEADD_PM_MASTER },
 179        { 3, TWL4030_BASEADD_PM_RECEIVER },
 180
 181        { 3, TWL4030_BASEADD_RTC },
 182        { 2, TWL4030_BASEADD_PWM },
 183        { 2, TWL4030_BASEADD_LED },
 184        { 3, TWL4030_BASEADD_SECURED_REG },
 185
 186        /* TWL4030 specific IPs */
 187        { 1, TWL4030_BASEADD_AUDIO_VOICE },
 188        { 1, TWL4030_BASEADD_GPIO },
 189        { 1, TWL4030_BASEADD_INTBR },
 190        { 1, TWL4030_BASEADD_TEST },
 191        { 2, TWL4030_BASEADD_KEYPAD },
 192
 193        { 2, TWL4030_BASEADD_MADC },
 194        { 2, TWL4030_BASEADD_INTERRUPTS },
 195        { 2, TWL4030_BASEADD_PRECHARGE },
 196        { 3, TWL4030_BASEADD_BACKUP },
 197        { 3, TWL4030_BASEADD_INT },
 198
 199        { 2, TWL5031_BASEADD_ACCESSORY },
 200        { 2, TWL5031_BASEADD_INTERRUPTS },
 201};
 202
 203static struct regmap_config twl4030_regmap_config[4] = {
 204        {
 205                /* Address 0x48 */
 206                .reg_bits = 8,
 207                .val_bits = 8,
 208                .max_register = 0xff,
 209        },
 210        {
 211                /* Address 0x49 */
 212                .reg_bits = 8,
 213                .val_bits = 8,
 214                .max_register = 0xff,
 215        },
 216        {
 217                /* Address 0x4a */
 218                .reg_bits = 8,
 219                .val_bits = 8,
 220                .max_register = 0xff,
 221        },
 222        {
 223                /* Address 0x4b */
 224                .reg_bits = 8,
 225                .val_bits = 8,
 226                .max_register = 0xff,
 227        },
 228};
 229
 230static struct twl_mapping twl6030_map[] = {
 231        /*
 232         * NOTE:  don't change this table without updating the
 233         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 234         * so they continue to match the order in this table.
 235         */
 236
 237        /* Common IPs */
 238        { 1, TWL6030_BASEADD_USB },
 239        { 1, TWL6030_BASEADD_PIH },
 240        { 1, TWL6030_BASEADD_CHARGER },
 241        { 0, TWL6030_BASEADD_PM_MASTER },
 242        { 0, TWL6030_BASEADD_PM_SLAVE_MISC },
 243
 244        { 0, TWL6030_BASEADD_RTC },
 245        { 1, TWL6030_BASEADD_PWM },
 246        { 1, TWL6030_BASEADD_LED },
 247        { 0, TWL6030_BASEADD_SECURED_REG },
 248
 249        /* TWL6030 specific IPs */
 250        { 0, TWL6030_BASEADD_ZERO },
 251        { 1, TWL6030_BASEADD_ZERO },
 252        { 2, TWL6030_BASEADD_ZERO },
 253        { 1, TWL6030_BASEADD_GPADC_CTRL },
 254        { 1, TWL6030_BASEADD_GASGAUGE },
 255};
 256
 257static struct regmap_config twl6030_regmap_config[3] = {
 258        {
 259                /* Address 0x48 */
 260                .reg_bits = 8,
 261                .val_bits = 8,
 262                .max_register = 0xff,
 263        },
 264        {
 265                /* Address 0x49 */
 266                .reg_bits = 8,
 267                .val_bits = 8,
 268                .max_register = 0xff,
 269        },
 270        {
 271                /* Address 0x4a */
 272                .reg_bits = 8,
 273                .val_bits = 8,
 274                .max_register = 0xff,
 275        },
 276};
 277
 278/*----------------------------------------------------------------------*/
 279
 280static inline int twl_get_num_slaves(void)
 281{
 282        if (twl_class_is_4030())
 283                return 4; /* TWL4030 class have four slave address */
 284        else
 285                return 3; /* TWL6030 class have three slave address */
 286}
 287
 288static inline int twl_get_last_module(void)
 289{
 290        if (twl_class_is_4030())
 291                return TWL4030_MODULE_LAST;
 292        else
 293                return TWL6030_MODULE_LAST;
 294}
 295
 296/* Exported Functions */
 297
 298unsigned int twl_rev(void)
 299{
 300        return twl_priv ? twl_priv->twl_id : 0;
 301}
 302EXPORT_SYMBOL(twl_rev);
 303
 304/**
 305 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 306 * @mod_no: module number
 307 * @value: an array of num_bytes+1 containing data to write
 308 * @reg: register address (just offset will do)
 309 * @num_bytes: number of bytes to transfer
 310 *
 311 * Returns the result of operation - 0 is success
 312 */
 313int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 314{
 315        int ret;
 316        int sid;
 317        struct twl_client *twl;
 318
 319        if (unlikely(!twl_priv || !twl_priv->ready)) {
 320                pr_err("%s: not initialized\n", DRIVER_NAME);
 321                return -EPERM;
 322        }
 323        if (unlikely(mod_no >= twl_get_last_module())) {
 324                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 325                return -EPERM;
 326        }
 327
 328        sid = twl_priv->twl_map[mod_no].sid;
 329        twl = &twl_priv->twl_modules[sid];
 330
 331        ret = regmap_bulk_write(twl->regmap,
 332                                twl_priv->twl_map[mod_no].base + reg, value,
 333                                num_bytes);
 334
 335        if (ret)
 336                pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
 337                       DRIVER_NAME, mod_no, reg, num_bytes);
 338
 339        return ret;
 340}
 341EXPORT_SYMBOL(twl_i2c_write);
 342
 343/**
 344 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 345 * @mod_no: module number
 346 * @value: an array of num_bytes containing data to be read
 347 * @reg: register address (just offset will do)
 348 * @num_bytes: number of bytes to transfer
 349 *
 350 * Returns result of operation - num_bytes is success else failure.
 351 */
 352int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 353{
 354        int ret;
 355        int sid;
 356        struct twl_client *twl;
 357
 358        if (unlikely(!twl_priv || !twl_priv->ready)) {
 359                pr_err("%s: not initialized\n", DRIVER_NAME);
 360                return -EPERM;
 361        }
 362        if (unlikely(mod_no >= twl_get_last_module())) {
 363                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 364                return -EPERM;
 365        }
 366
 367        sid = twl_priv->twl_map[mod_no].sid;
 368        twl = &twl_priv->twl_modules[sid];
 369
 370        ret = regmap_bulk_read(twl->regmap,
 371                               twl_priv->twl_map[mod_no].base + reg, value,
 372                               num_bytes);
 373
 374        if (ret)
 375                pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
 376                       DRIVER_NAME, mod_no, reg, num_bytes);
 377
 378        return ret;
 379}
 380EXPORT_SYMBOL(twl_i2c_read);
 381
 382/*----------------------------------------------------------------------*/
 383
 384/**
 385 * twl_read_idcode_register - API to read the IDCODE register.
 386 *
 387 * Unlocks the IDCODE register and read the 32 bit value.
 388 */
 389static int twl_read_idcode_register(void)
 390{
 391        int err;
 392
 393        err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 394                                                REG_UNLOCK_TEST_REG);
 395        if (err) {
 396                pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 397                goto fail;
 398        }
 399
 400        err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),
 401                                                REG_IDCODE_7_0, 4);
 402        if (err) {
 403                pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 404                goto fail;
 405        }
 406
 407        err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 408        if (err)
 409                pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 410fail:
 411        return err;
 412}
 413
 414/**
 415 * twl_get_type - API to get TWL Si type.
 416 *
 417 * Api to get the TWL Si type from IDCODE value.
 418 */
 419int twl_get_type(void)
 420{
 421        return TWL_SIL_TYPE(twl_priv->twl_idcode);
 422}
 423EXPORT_SYMBOL_GPL(twl_get_type);
 424
 425/**
 426 * twl_get_version - API to get TWL Si version.
 427 *
 428 * Api to get the TWL Si version from IDCODE value.
 429 */
 430int twl_get_version(void)
 431{
 432        return TWL_SIL_REV(twl_priv->twl_idcode);
 433}
 434EXPORT_SYMBOL_GPL(twl_get_version);
 435
 436/**
 437 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
 438 *
 439 * Api to get the TWL HFCLK rate based on BOOT_CFG register.
 440 */
 441int twl_get_hfclk_rate(void)
 442{
 443        u8 ctrl;
 444        int rate;
 445
 446        twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
 447
 448        switch (ctrl & 0x3) {
 449        case HFCLK_FREQ_19p2_MHZ:
 450                rate = 19200000;
 451                break;
 452        case HFCLK_FREQ_26_MHZ:
 453                rate = 26000000;
 454                break;
 455        case HFCLK_FREQ_38p4_MHZ:
 456                rate = 38400000;
 457                break;
 458        default:
 459                pr_err("TWL4030: HFCLK is not configured\n");
 460                rate = -EINVAL;
 461                break;
 462        }
 463
 464        return rate;
 465}
 466EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
 467
 468static struct device *
 469add_numbered_child(unsigned mod_no, const char *name, int num,
 470                void *pdata, unsigned pdata_len,
 471                bool can_wakeup, int irq0, int irq1)
 472{
 473        struct platform_device  *pdev;
 474        struct twl_client       *twl;
 475        int                     status, sid;
 476
 477        if (unlikely(mod_no >= twl_get_last_module())) {
 478                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 479                return ERR_PTR(-EPERM);
 480        }
 481        sid = twl_priv->twl_map[mod_no].sid;
 482        twl = &twl_priv->twl_modules[sid];
 483
 484        pdev = platform_device_alloc(name, num);
 485        if (!pdev) {
 486                dev_dbg(&twl->client->dev, "can't alloc dev\n");
 487                status = -ENOMEM;
 488                goto err;
 489        }
 490
 491        pdev->dev.parent = &twl->client->dev;
 492
 493        if (pdata) {
 494                status = platform_device_add_data(pdev, pdata, pdata_len);
 495                if (status < 0) {
 496                        dev_dbg(&pdev->dev, "can't add platform_data\n");
 497                        goto err;
 498                }
 499        }
 500
 501        if (irq0) {
 502                struct resource r[2] = {
 503                        { .start = irq0, .flags = IORESOURCE_IRQ, },
 504                        { .start = irq1, .flags = IORESOURCE_IRQ, },
 505                };
 506
 507                status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 508                if (status < 0) {
 509                        dev_dbg(&pdev->dev, "can't add irqs\n");
 510                        goto err;
 511                }
 512        }
 513
 514        status = platform_device_add(pdev);
 515        if (status == 0)
 516                device_init_wakeup(&pdev->dev, can_wakeup);
 517
 518err:
 519        if (status < 0) {
 520                platform_device_put(pdev);
 521                dev_err(&twl->client->dev, "can't add %s dev\n", name);
 522                return ERR_PTR(status);
 523        }
 524        return &pdev->dev;
 525}
 526
 527static inline struct device *add_child(unsigned mod_no, const char *name,
 528                void *pdata, unsigned pdata_len,
 529                bool can_wakeup, int irq0, int irq1)
 530{
 531        return add_numbered_child(mod_no, name, -1, pdata, pdata_len,
 532                can_wakeup, irq0, irq1);
 533}
 534
 535static struct device *
 536add_regulator_linked(int num, struct regulator_init_data *pdata,
 537                struct regulator_consumer_supply *consumers,
 538                unsigned num_consumers, unsigned long features)
 539{
 540        struct twl_regulator_driver_data drv_data;
 541
 542        /* regulator framework demands init_data ... */
 543        if (!pdata)
 544                return NULL;
 545
 546        if (consumers) {
 547                pdata->consumer_supplies = consumers;
 548                pdata->num_consumer_supplies = num_consumers;
 549        }
 550
 551        if (pdata->driver_data) {
 552                /* If we have existing drv_data, just add the flags */
 553                struct twl_regulator_driver_data *tmp;
 554                tmp = pdata->driver_data;
 555                tmp->features |= features;
 556        } else {
 557                /* add new driver data struct, used only during init */
 558                drv_data.features = features;
 559                drv_data.set_voltage = NULL;
 560                drv_data.get_voltage = NULL;
 561                drv_data.data = NULL;
 562                pdata->driver_data = &drv_data;
 563        }
 564
 565        /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 566        return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num,
 567                pdata, sizeof(*pdata), false, 0, 0);
 568}
 569
 570static struct device *
 571add_regulator(int num, struct regulator_init_data *pdata,
 572                unsigned long features)
 573{
 574        return add_regulator_linked(num, pdata, NULL, 0, features);
 575}
 576
 577/*
 578 * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 579 * for the PIH, and the next are for the PWR_INT SIH, since
 580 * that's how twl_init_irq() sets things up.
 581 */
 582
 583static int
 584add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
 585                unsigned long features)
 586{
 587        struct device   *child;
 588
 589        if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
 590                child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio",
 591                                pdata->gpio, sizeof(*pdata->gpio),
 592                                false, irq_base + GPIO_INTR_OFFSET, 0);
 593                if (IS_ERR(child))
 594                        return PTR_ERR(child);
 595        }
 596
 597        if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
 598                child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad",
 599                                pdata->keypad, sizeof(*pdata->keypad),
 600                                true, irq_base + KEYPAD_INTR_OFFSET, 0);
 601                if (IS_ERR(child))
 602                        return PTR_ERR(child);
 603        }
 604
 605        if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&
 606            twl_class_is_4030()) {
 607                child = add_child(TWL4030_MODULE_MADC, "twl4030_madc",
 608                                pdata->madc, sizeof(*pdata->madc),
 609                                true, irq_base + MADC_INTR_OFFSET, 0);
 610                if (IS_ERR(child))
 611                        return PTR_ERR(child);
 612        }
 613
 614        if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
 615                /*
 616                 * REVISIT platform_data here currently might expose the
 617                 * "msecure" line ... but for now we just expect board
 618                 * setup to tell the chip "it's always ok to SET_TIME".
 619                 * Eventually, Linux might become more aware of such
 620                 * HW security concerns, and "least privilege".
 621                 */
 622                child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0,
 623                                true, irq_base + RTC_INTR_OFFSET, 0);
 624                if (IS_ERR(child))
 625                        return PTR_ERR(child);
 626        }
 627
 628        if (IS_ENABLED(CONFIG_PWM_TWL)) {
 629                child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0,
 630                                  false, 0, 0);
 631                if (IS_ERR(child))
 632                        return PTR_ERR(child);
 633        }
 634
 635        if (IS_ENABLED(CONFIG_PWM_TWL_LED)) {
 636                child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0,
 637                                  false, 0, 0);
 638                if (IS_ERR(child))
 639                        return PTR_ERR(child);
 640        }
 641
 642        if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
 643            twl_class_is_4030()) {
 644
 645                static struct regulator_consumer_supply usb1v5 = {
 646                        .supply =       "usb1v5",
 647                };
 648                static struct regulator_consumer_supply usb1v8 = {
 649                        .supply =       "usb1v8",
 650                };
 651                static struct regulator_consumer_supply usb3v1[] = {
 652                        { .supply =     "usb3v1" },
 653                        { .supply =     "bci3v1" },
 654                };
 655
 656        /* First add the regulators so that they can be used by transceiver */
 657                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 658                        /* this is a template that gets copied */
 659                        struct regulator_init_data usb_fixed = {
 660                                .constraints.valid_modes_mask =
 661                                        REGULATOR_MODE_NORMAL
 662                                        | REGULATOR_MODE_STANDBY,
 663                                .constraints.valid_ops_mask =
 664                                        REGULATOR_CHANGE_MODE
 665                                        | REGULATOR_CHANGE_STATUS,
 666                        };
 667
 668                        child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 669                                                      &usb_fixed, &usb1v5, 1,
 670                                                      features);
 671                        if (IS_ERR(child))
 672                                return PTR_ERR(child);
 673
 674                        child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 675                                                      &usb_fixed, &usb1v8, 1,
 676                                                      features);
 677                        if (IS_ERR(child))
 678                                return PTR_ERR(child);
 679
 680                        child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 681                                                      &usb_fixed, usb3v1, 2,
 682                                                      features);
 683                        if (IS_ERR(child))
 684                                return PTR_ERR(child);
 685
 686                }
 687
 688                child = add_child(TWL_MODULE_USB, "twl4030_usb",
 689                                pdata->usb, sizeof(*pdata->usb), true,
 690                                /* irq0 = USB_PRES, irq1 = USB */
 691                                irq_base + USB_PRES_INTR_OFFSET,
 692                                irq_base + USB_INTR_OFFSET);
 693
 694                if (IS_ERR(child))
 695                        return PTR_ERR(child);
 696
 697                /* we need to connect regulators to this transceiver */
 698                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
 699                        usb1v5.dev_name = dev_name(child);
 700                        usb1v8.dev_name = dev_name(child);
 701                        usb3v1[0].dev_name = dev_name(child);
 702                }
 703        }
 704        if (IS_ENABLED(CONFIG_TWL6030_USB) && pdata->usb &&
 705            twl_class_is_6030()) {
 706
 707                static struct regulator_consumer_supply usb3v3;
 708                int regulator;
 709
 710                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 711                        /* this is a template that gets copied */
 712                        struct regulator_init_data usb_fixed = {
 713                                .constraints.valid_modes_mask =
 714                                        REGULATOR_MODE_NORMAL
 715                                        | REGULATOR_MODE_STANDBY,
 716                                .constraints.valid_ops_mask =
 717                                        REGULATOR_CHANGE_MODE
 718                                        | REGULATOR_CHANGE_STATUS,
 719                        };
 720
 721                        if (features & TWL6032_SUBCLASS) {
 722                                usb3v3.supply = "ldousb";
 723                                regulator = TWL6032_REG_LDOUSB;
 724                        } else {
 725                                usb3v3.supply = "vusb";
 726                                regulator = TWL6030_REG_VUSB;
 727                        }
 728                        child = add_regulator_linked(regulator, &usb_fixed,
 729                                                        &usb3v3, 1,
 730                                                        features);
 731                        if (IS_ERR(child))
 732                                return PTR_ERR(child);
 733                }
 734
 735                pdata->usb->features = features;
 736
 737                child = add_child(TWL_MODULE_USB, "twl6030_usb",
 738                        pdata->usb, sizeof(*pdata->usb), true,
 739                        /* irq1 = VBUS_PRES, irq0 = USB ID */
 740                        irq_base + USBOTG_INTR_OFFSET,
 741                        irq_base + USB_PRES_INTR_OFFSET);
 742
 743                if (IS_ERR(child))
 744                        return PTR_ERR(child);
 745                /* we need to connect regulators to this transceiver */
 746                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child)
 747                        usb3v3.dev_name = dev_name(child);
 748        } else if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) &&
 749                   twl_class_is_6030()) {
 750                if (features & TWL6032_SUBCLASS)
 751                        child = add_regulator(TWL6032_REG_LDOUSB,
 752                                                pdata->ldousb, features);
 753                else
 754                        child = add_regulator(TWL6030_REG_VUSB,
 755                                                pdata->vusb, features);
 756
 757                        if (IS_ERR(child))
 758                                        return PTR_ERR(child);
 759        }
 760
 761        if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
 762                child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL,
 763                                  0, false, 0, 0);
 764                if (IS_ERR(child))
 765                        return PTR_ERR(child);
 766        }
 767
 768        if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
 769                child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton",
 770                                  NULL, 0, true, irq_base + 8 + 0, 0);
 771                if (IS_ERR(child))
 772                        return PTR_ERR(child);
 773        }
 774
 775        if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
 776            twl_class_is_4030()) {
 777                child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio",
 778                                pdata->audio, sizeof(*pdata->audio),
 779                                false, 0, 0);
 780                if (IS_ERR(child))
 781                        return PTR_ERR(child);
 782        }
 783
 784        /* twl4030 regulators */
 785        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
 786                child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 787                                        features);
 788                if (IS_ERR(child))
 789                        return PTR_ERR(child);
 790
 791                child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 792                                        features);
 793                if (IS_ERR(child))
 794                        return PTR_ERR(child);
 795
 796                child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 797                                        features);
 798                if (IS_ERR(child))
 799                        return PTR_ERR(child);
 800
 801                child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 802                                        features);
 803                if (IS_ERR(child))
 804                        return PTR_ERR(child);
 805
 806                child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 807                                        features);
 808                if (IS_ERR(child))
 809                        return PTR_ERR(child);
 810
 811                child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 812                                        features);
 813                if (IS_ERR(child))
 814                        return PTR_ERR(child);
 815
 816                child = add_regulator((features & TWL4030_VAUX2)
 817                                        ? TWL4030_REG_VAUX2_4030
 818                                        : TWL4030_REG_VAUX2,
 819                                pdata->vaux2, features);
 820                if (IS_ERR(child))
 821                        return PTR_ERR(child);
 822
 823                child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 824                                        features);
 825                if (IS_ERR(child))
 826                        return PTR_ERR(child);
 827
 828                child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 829                                        features);
 830                if (IS_ERR(child))
 831                        return PTR_ERR(child);
 832
 833                child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 834                                        features);
 835                if (IS_ERR(child))
 836                        return PTR_ERR(child);
 837        }
 838
 839        /* maybe add LDOs that are omitted on cost-reduced parts */
 840        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
 841          && twl_class_is_4030()) {
 842                child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 843                                        features);
 844                if (IS_ERR(child))
 845                        return PTR_ERR(child);
 846
 847                child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 848                                        features);
 849                if (IS_ERR(child))
 850                        return PTR_ERR(child);
 851
 852                child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 853                                        features);
 854                if (IS_ERR(child))
 855                        return PTR_ERR(child);
 856
 857                child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 858                                        features);
 859                if (IS_ERR(child))
 860                        return PTR_ERR(child);
 861
 862                child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 863                                        features);
 864                if (IS_ERR(child))
 865                        return PTR_ERR(child);
 866
 867                child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 868                                        features);
 869                if (IS_ERR(child))
 870                        return PTR_ERR(child);
 871        }
 872
 873        /* twl6030 regulators */
 874        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
 875                        !(features & TWL6032_SUBCLASS)) {
 876                child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
 877                                        features);
 878                if (IS_ERR(child))
 879                        return PTR_ERR(child);
 880
 881                child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
 882                                        features);
 883                if (IS_ERR(child))
 884                        return PTR_ERR(child);
 885
 886                child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
 887                                        features);
 888                if (IS_ERR(child))
 889                        return PTR_ERR(child);
 890
 891                child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
 892                                        features);
 893                if (IS_ERR(child))
 894                        return PTR_ERR(child);
 895
 896                child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
 897                                        features);
 898                if (IS_ERR(child))
 899                        return PTR_ERR(child);
 900
 901                child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
 902                                        features);
 903                if (IS_ERR(child))
 904                        return PTR_ERR(child);
 905
 906                child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
 907                                        features);
 908                if (IS_ERR(child))
 909                        return PTR_ERR(child);
 910
 911                child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
 912                                        features);
 913                if (IS_ERR(child))
 914                        return PTR_ERR(child);
 915
 916                child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
 917                                        features);
 918                if (IS_ERR(child))
 919                        return PTR_ERR(child);
 920
 921                child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
 922                                        features);
 923                if (IS_ERR(child))
 924                        return PTR_ERR(child);
 925
 926                child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
 927                                        features);
 928                if (IS_ERR(child))
 929                        return PTR_ERR(child);
 930
 931                child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
 932                                        features);
 933                if (IS_ERR(child))
 934                        return PTR_ERR(child);
 935
 936                child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
 937                                        features);
 938                if (IS_ERR(child))
 939                        return PTR_ERR(child);
 940
 941                child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
 942                                        features);
 943                if (IS_ERR(child))
 944                        return PTR_ERR(child);
 945        }
 946
 947        /* 6030 and 6025 share this regulator */
 948        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030()) {
 949                child = add_regulator(TWL6030_REG_VANA, pdata->vana,
 950                                        features);
 951                if (IS_ERR(child))
 952                        return PTR_ERR(child);
 953        }
 954
 955        /* twl6032 regulators */
 956        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
 957                        (features & TWL6032_SUBCLASS)) {
 958                child = add_regulator(TWL6032_REG_LDO5, pdata->ldo5,
 959                                        features);
 960                if (IS_ERR(child))
 961                        return PTR_ERR(child);
 962
 963                child = add_regulator(TWL6032_REG_LDO1, pdata->ldo1,
 964                                        features);
 965                if (IS_ERR(child))
 966                        return PTR_ERR(child);
 967
 968                child = add_regulator(TWL6032_REG_LDO7, pdata->ldo7,
 969                                        features);
 970                if (IS_ERR(child))
 971                        return PTR_ERR(child);
 972
 973                child = add_regulator(TWL6032_REG_LDO6, pdata->ldo6,
 974                                        features);
 975                if (IS_ERR(child))
 976                        return PTR_ERR(child);
 977
 978                child = add_regulator(TWL6032_REG_LDOLN, pdata->ldoln,
 979                                        features);
 980                if (IS_ERR(child))
 981                        return PTR_ERR(child);
 982
 983                child = add_regulator(TWL6032_REG_LDO2, pdata->ldo2,
 984                                        features);
 985                if (IS_ERR(child))
 986                        return PTR_ERR(child);
 987
 988                child = add_regulator(TWL6032_REG_LDO4, pdata->ldo4,
 989                                        features);
 990                if (IS_ERR(child))
 991                        return PTR_ERR(child);
 992
 993                child = add_regulator(TWL6032_REG_LDO3, pdata->ldo3,
 994                                        features);
 995                if (IS_ERR(child))
 996                        return PTR_ERR(child);
 997
 998                child = add_regulator(TWL6032_REG_SMPS3, pdata->smps3,
 999                                        features);
1000                if (IS_ERR(child))
1001                        return PTR_ERR(child);
1002
1003                child = add_regulator(TWL6032_REG_SMPS4, pdata->smps4,
1004                                        features);
1005                if (IS_ERR(child))
1006                        return PTR_ERR(child);
1007
1008                child = add_regulator(TWL6032_REG_VIO, pdata->vio6025,
1009                                        features);
1010                if (IS_ERR(child))
1011                        return PTR_ERR(child);
1012
1013        }
1014
1015        if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
1016                        !(features & (TPS_SUBSET | TWL5031))) {
1017                child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci",
1018                                pdata->bci, sizeof(*pdata->bci), false,
1019                                /* irq0 = CHG_PRES, irq1 = BCI */
1020                                irq_base + BCI_PRES_INTR_OFFSET,
1021                                irq_base + BCI_INTR_OFFSET);
1022                if (IS_ERR(child))
1023                        return PTR_ERR(child);
1024        }
1025
1026        if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) {
1027                child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power",
1028                                  pdata->power, sizeof(*pdata->power), false,
1029                                  0, 0);
1030                if (IS_ERR(child))
1031                        return PTR_ERR(child);
1032        }
1033
1034        return 0;
1035}
1036
1037/*----------------------------------------------------------------------*/
1038
1039/*
1040 * These three functions initialize the on-chip clock framework,
1041 * letting it generate the right frequencies for USB, MADC, and
1042 * other purposes.
1043 */
1044static inline int __init protect_pm_master(void)
1045{
1046        int e = 0;
1047
1048        e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
1049                             TWL4030_PM_MASTER_PROTECT_KEY);
1050        return e;
1051}
1052
1053static inline int __init unprotect_pm_master(void)
1054{
1055        int e = 0;
1056
1057        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
1058                              TWL4030_PM_MASTER_PROTECT_KEY);
1059        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
1060                              TWL4030_PM_MASTER_PROTECT_KEY);
1061
1062        return e;
1063}
1064
1065static void clocks_init(struct device *dev,
1066                        struct twl4030_clock_init_data *clock)
1067{
1068        int e = 0;
1069        struct clk *osc;
1070        u32 rate;
1071        u8 ctrl = HFCLK_FREQ_26_MHZ;
1072
1073        osc = clk_get(dev, "fck");
1074        if (IS_ERR(osc)) {
1075                printk(KERN_WARNING "Skipping twl internal clock init and "
1076                                "using bootloader value (unknown osc rate)\n");
1077                return;
1078        }
1079
1080        rate = clk_get_rate(osc);
1081        clk_put(osc);
1082
1083        switch (rate) {
1084        case 19200000:
1085                ctrl = HFCLK_FREQ_19p2_MHZ;
1086                break;
1087        case 26000000:
1088                ctrl = HFCLK_FREQ_26_MHZ;
1089                break;
1090        case 38400000:
1091                ctrl = HFCLK_FREQ_38p4_MHZ;
1092                break;
1093        }
1094
1095        ctrl |= HIGH_PERF_SQ;
1096        if (clock && clock->ck32k_lowpwr_enable)
1097                ctrl |= CK32K_LOWPWR_EN;
1098
1099        e |= unprotect_pm_master();
1100        /* effect->MADC+USB ck en */
1101        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1102        e |= protect_pm_master();
1103
1104        if (e < 0)
1105                pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1106}
1107
1108/*----------------------------------------------------------------------*/
1109
1110
1111static int twl_remove(struct i2c_client *client)
1112{
1113        unsigned i, num_slaves;
1114        int status;
1115
1116        if (twl_class_is_4030())
1117                status = twl4030_exit_irq();
1118        else
1119                status = twl6030_exit_irq();
1120
1121        if (status < 0)
1122                return status;
1123
1124        num_slaves = twl_get_num_slaves();
1125        for (i = 0; i < num_slaves; i++) {
1126                struct twl_client       *twl = &twl_priv->twl_modules[i];
1127
1128                if (twl->client && twl->client != client)
1129                        i2c_unregister_device(twl->client);
1130                twl->client = NULL;
1131        }
1132        twl_priv->ready = false;
1133        return 0;
1134}
1135
1136/* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1137static int
1138twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1139{
1140        struct twl4030_platform_data    *pdata = dev_get_platdata(&client->dev);
1141        struct device_node              *node = client->dev.of_node;
1142        struct platform_device          *pdev;
1143        struct regmap_config            *twl_regmap_config;
1144        int                             irq_base = 0;
1145        int                             status;
1146        unsigned                        i, num_slaves;
1147
1148        if (!node && !pdata) {
1149                dev_err(&client->dev, "no platform data\n");
1150                return -EINVAL;
1151        }
1152
1153        if (twl_priv) {
1154                dev_dbg(&client->dev, "only one instance of %s allowed\n",
1155                        DRIVER_NAME);
1156                return -EBUSY;
1157        }
1158
1159        pdev = platform_device_alloc(DRIVER_NAME, -1);
1160        if (!pdev) {
1161                dev_err(&client->dev, "can't alloc pdev\n");
1162                return -ENOMEM;
1163        }
1164
1165        status = platform_device_add(pdev);
1166        if (status) {
1167                platform_device_put(pdev);
1168                return status;
1169        }
1170
1171        if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1172                dev_dbg(&client->dev, "can't talk I2C?\n");
1173                status = -EIO;
1174                goto free;
1175        }
1176
1177        twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),
1178                                GFP_KERNEL);
1179        if (!twl_priv) {
1180                status = -ENOMEM;
1181                goto free;
1182        }
1183
1184        if ((id->driver_data) & TWL6030_CLASS) {
1185                twl_priv->twl_id = TWL6030_CLASS_ID;
1186                twl_priv->twl_map = &twl6030_map[0];
1187                /* The charger base address is different in twl6032 */
1188                if ((id->driver_data) & TWL6032_SUBCLASS)
1189                        twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =
1190                                                        TWL6032_BASEADD_CHARGER;
1191                twl_regmap_config = twl6030_regmap_config;
1192        } else {
1193                twl_priv->twl_id = TWL4030_CLASS_ID;
1194                twl_priv->twl_map = &twl4030_map[0];
1195                twl_regmap_config = twl4030_regmap_config;
1196        }
1197
1198        num_slaves = twl_get_num_slaves();
1199        twl_priv->twl_modules = devm_kzalloc(&client->dev,
1200                                         sizeof(struct twl_client) * num_slaves,
1201                                         GFP_KERNEL);
1202        if (!twl_priv->twl_modules) {
1203                status = -ENOMEM;
1204                goto free;
1205        }
1206
1207        for (i = 0; i < num_slaves; i++) {
1208                struct twl_client *twl = &twl_priv->twl_modules[i];
1209
1210                if (i == 0) {
1211                        twl->client = client;
1212                } else {
1213                        twl->client = i2c_new_dummy(client->adapter,
1214                                                    client->addr + i);
1215                        if (!twl->client) {
1216                                dev_err(&client->dev,
1217                                        "can't attach client %d\n", i);
1218                                status = -ENOMEM;
1219                                goto fail;
1220                        }
1221                }
1222
1223                twl->regmap = devm_regmap_init_i2c(twl->client,
1224                                                   &twl_regmap_config[i]);
1225                if (IS_ERR(twl->regmap)) {
1226                        status = PTR_ERR(twl->regmap);
1227                        dev_err(&client->dev,
1228                                "Failed to allocate regmap %d, err: %d\n", i,
1229                                status);
1230                        goto fail;
1231                }
1232        }
1233
1234        twl_priv->ready = true;
1235
1236        /* setup clock framework */
1237        clocks_init(&pdev->dev, pdata ? pdata->clock : NULL);
1238
1239        /* read TWL IDCODE Register */
1240        if (twl_class_is_4030()) {
1241                status = twl_read_idcode_register();
1242                WARN(status < 0, "Error: reading twl_idcode register value\n");
1243        }
1244
1245        /* Maybe init the T2 Interrupt subsystem */
1246        if (client->irq) {
1247                if (twl_class_is_4030()) {
1248                        twl4030_init_chip_irq(id->name);
1249                        irq_base = twl4030_init_irq(&client->dev, client->irq);
1250                } else {
1251                        irq_base = twl6030_init_irq(&client->dev, client->irq);
1252                }
1253
1254                if (irq_base < 0) {
1255                        status = irq_base;
1256                        goto fail;
1257                }
1258        }
1259
1260        /*
1261         * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1262         * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1263         * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1264         */
1265        if (twl_class_is_4030()) {
1266                u8 temp;
1267
1268                twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1269                temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1270                        I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1271                twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1272        }
1273
1274        if (node)
1275                status = of_platform_populate(node, NULL, NULL, &client->dev);
1276        else
1277                status = add_children(pdata, irq_base, id->driver_data);
1278
1279fail:
1280        if (status < 0)
1281                twl_remove(client);
1282free:
1283        if (status < 0)
1284                platform_device_unregister(pdev);
1285
1286        return status;
1287}
1288
1289static const struct i2c_device_id twl_ids[] = {
1290        { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1291        { "twl5030", 0 },               /* T2 updated */
1292        { "twl5031", TWL5031 },         /* TWL5030 updated */
1293        { "tps65950", 0 },              /* catalog version of twl5030 */
1294        { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1295        { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1296        { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1297                                           and vibrator. Charger in USB module*/
1298        { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1299        { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */
1300        { /* end of list */ },
1301};
1302MODULE_DEVICE_TABLE(i2c, twl_ids);
1303
1304/* One Client Driver , 4 Clients */
1305static struct i2c_driver twl_driver = {
1306        .driver.name    = DRIVER_NAME,
1307        .id_table       = twl_ids,
1308        .probe          = twl_probe,
1309        .remove         = twl_remove,
1310};
1311
1312module_i2c_driver(twl_driver);
1313
1314MODULE_AUTHOR("Texas Instruments, Inc.");
1315MODULE_DESCRIPTION("I2C Core interface for TWL");
1316MODULE_LICENSE("GPL");
1317
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