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/clk.h>
  36#include <linux/err.h>
  37#include <linux/device.h>
  38#include <linux/of.h>
  39#include <linux/of_irq.h>
  40#include <linux/of_platform.h>
  41#include <linux/irq.h>
  42#include <linux/irqdomain.h>
  43
  44#include <linux/regulator/machine.h>
  45
  46#include <linux/i2c.h>
  47#include <linux/i2c/twl.h>
  48
  49#include "twl-core.h"
  50
  51/*
  52 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  53 * Management and System Companion Device" chips originally designed for
  54 * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  55 * often at around 3 Mbit/sec, including for interrupt handling.
  56 *
  57 * This driver core provides genirq support for the interrupts emitted,
  58 * by the various modules, and exports register access primitives.
  59 *
  60 * FIXME this driver currently requires use of the first interrupt line
  61 * (and associated registers).
  62 */
  63
  64#define DRIVER_NAME                     "twl"
  65
  66/* Triton Core internal information (BEGIN) */
  67
  68/* Last - for index max*/
  69#define TWL4030_MODULE_LAST             TWL4030_MODULE_SECURED_REG
  70
  71#define TWL_NUM_SLAVES          4
  72
  73#define SUB_CHIP_ID0 0
  74#define SUB_CHIP_ID1 1
  75#define SUB_CHIP_ID2 2
  76#define SUB_CHIP_ID3 3
  77#define SUB_CHIP_ID_INVAL 0xff
  78
  79#define TWL_MODULE_LAST TWL4030_MODULE_LAST
  80
  81/* Base Address defns for twl4030_map[] */
  82
  83/* subchip/slave 0 - USB ID */
  84#define TWL4030_BASEADD_USB             0x0000
  85
  86/* subchip/slave 1 - AUD ID */
  87#define TWL4030_BASEADD_AUDIO_VOICE     0x0000
  88#define TWL4030_BASEADD_GPIO            0x0098
  89#define TWL4030_BASEADD_INTBR           0x0085
  90#define TWL4030_BASEADD_PIH             0x0080
  91#define TWL4030_BASEADD_TEST            0x004C
  92
  93/* subchip/slave 2 - AUX ID */
  94#define TWL4030_BASEADD_INTERRUPTS      0x00B9
  95#define TWL4030_BASEADD_LED             0x00EE
  96#define TWL4030_BASEADD_MADC            0x0000
  97#define TWL4030_BASEADD_MAIN_CHARGE     0x0074
  98#define TWL4030_BASEADD_PRECHARGE       0x00AA
  99#define TWL4030_BASEADD_PWM0            0x00F8
 100#define TWL4030_BASEADD_PWM1            0x00FB
 101#define TWL4030_BASEADD_PWMA            0x00EF
 102#define TWL4030_BASEADD_PWMB            0x00F1
 103#define TWL4030_BASEADD_KEYPAD          0x00D2
 104
 105#define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
 106#define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
 107                                                  one */
 108
 109/* subchip/slave 3 - POWER ID */
 110#define TWL4030_BASEADD_BACKUP          0x0014
 111#define TWL4030_BASEADD_INT             0x002E
 112#define TWL4030_BASEADD_PM_MASTER       0x0036
 113#define TWL4030_BASEADD_PM_RECEIVER     0x005B
 114#define TWL4030_BASEADD_RTC             0x001C
 115#define TWL4030_BASEADD_SECURED_REG     0x0000
 116
 117/* Triton Core internal information (END) */
 118
 119
 120/* subchip/slave 0 0x48 - POWER */
 121#define TWL6030_BASEADD_RTC             0x0000
 122#define TWL6030_BASEADD_MEM             0x0017
 123#define TWL6030_BASEADD_PM_MASTER       0x001F
 124#define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 125#define TWL6030_BASEADD_PM_MISC         0x00E2
 126#define TWL6030_BASEADD_PM_PUPD         0x00F0
 127
 128/* subchip/slave 1 0x49 - FEATURE */
 129#define TWL6030_BASEADD_USB             0x0000
 130#define TWL6030_BASEADD_GPADC_CTRL      0x002E
 131#define TWL6030_BASEADD_AUX             0x0090
 132#define TWL6030_BASEADD_PWM             0x00BA
 133#define TWL6030_BASEADD_GASGAUGE        0x00C0
 134#define TWL6030_BASEADD_PIH             0x00D0
 135#define TWL6030_BASEADD_CHARGER         0x00E0
 136#define TWL6025_BASEADD_CHARGER         0x00DA
 137
 138/* subchip/slave 2 0x4A - DFT */
 139#define TWL6030_BASEADD_DIEID           0x00C0
 140
 141/* subchip/slave 3 0x4B - AUDIO */
 142#define TWL6030_BASEADD_AUDIO           0x0000
 143#define TWL6030_BASEADD_RSV             0x0000
 144#define TWL6030_BASEADD_ZERO            0x0000
 145
 146/* Few power values */
 147#define R_CFG_BOOT                      0x05
 148
 149/* some fields in R_CFG_BOOT */
 150#define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 151#define HFCLK_FREQ_26_MHZ               (2 << 0)
 152#define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 153#define HIGH_PERF_SQ                    (1 << 3)
 154#define CK32K_LOWPWR_EN                 (1 << 7)
 155
 156/*----------------------------------------------------------------------*/
 157
 158/* is driver active, bound to a chip? */
 159static bool inuse;
 160
 161/* TWL IDCODE Register value */
 162static u32 twl_idcode;
 163
 164static unsigned int twl_id;
 165unsigned int twl_rev(void)
 166{
 167        return twl_id;
 168}
 169EXPORT_SYMBOL(twl_rev);
 170
 171/* Structure for each TWL4030/TWL6030 Slave */
 172struct twl_client {
 173        struct i2c_client *client;
 174        u8 address;
 175
 176        /* max numb of i2c_msg required is for read =2 */
 177        struct i2c_msg xfer_msg[2];
 178
 179        /* To lock access to xfer_msg */
 180        struct mutex xfer_lock;
 181};
 182
 183static struct twl_client twl_modules[TWL_NUM_SLAVES];
 184
 185/* mapping the module id to slave id and base address */
 186struct twl_mapping {
 187        unsigned char sid;      /* Slave ID */
 188        unsigned char base;     /* base address */
 189};
 190static struct twl_mapping *twl_map;
 191
 192static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
 193        /*
 194         * NOTE:  don't change this table without updating the
 195         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 196         * so they continue to match the order in this table.
 197         */
 198
 199        { 0, TWL4030_BASEADD_USB },
 200
 201        { 1, TWL4030_BASEADD_AUDIO_VOICE },
 202        { 1, TWL4030_BASEADD_GPIO },
 203        { 1, TWL4030_BASEADD_INTBR },
 204        { 1, TWL4030_BASEADD_PIH },
 205        { 1, TWL4030_BASEADD_TEST },
 206
 207        { 2, TWL4030_BASEADD_KEYPAD },
 208        { 2, TWL4030_BASEADD_MADC },
 209        { 2, TWL4030_BASEADD_INTERRUPTS },
 210        { 2, TWL4030_BASEADD_LED },
 211        { 2, TWL4030_BASEADD_MAIN_CHARGE },
 212        { 2, TWL4030_BASEADD_PRECHARGE },
 213        { 2, TWL4030_BASEADD_PWM0 },
 214        { 2, TWL4030_BASEADD_PWM1 },
 215        { 2, TWL4030_BASEADD_PWMA },
 216        { 2, TWL4030_BASEADD_PWMB },
 217        { 2, TWL5031_BASEADD_ACCESSORY },
 218        { 2, TWL5031_BASEADD_INTERRUPTS },
 219
 220        { 3, TWL4030_BASEADD_BACKUP },
 221        { 3, TWL4030_BASEADD_INT },
 222        { 3, TWL4030_BASEADD_PM_MASTER },
 223        { 3, TWL4030_BASEADD_PM_RECEIVER },
 224        { 3, TWL4030_BASEADD_RTC },
 225        { 3, TWL4030_BASEADD_SECURED_REG },
 226};
 227
 228static struct twl_mapping twl6030_map[] = {
 229        /*
 230         * NOTE:  don't change this table without updating the
 231         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 232         * so they continue to match the order in this table.
 233         */
 234        { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
 235        { SUB_CHIP_ID_INVAL, TWL6030_BASEADD_AUDIO },
 236        { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
 237        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 238        { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
 239
 240        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 241        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 242        { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
 243        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 244        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 245
 246        { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
 247        { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
 248        { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
 249        { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
 250        { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
 251
 252        { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 253        { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
 254        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 255        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 256        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
 257        { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
 258        { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
 259
 260        { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
 261        { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
 262        { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
 263};
 264
 265/*----------------------------------------------------------------------*/
 266
 267/* Exported Functions */
 268
 269/**
 270 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 271 * @mod_no: module number
 272 * @value: an array of num_bytes+1 containing data to write
 273 * @reg: register address (just offset will do)
 274 * @num_bytes: number of bytes to transfer
 275 *
 276 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
 277 * valid data starts at Offset 1.
 278 *
 279 * Returns the result of operation - 0 is success
 280 */
 281int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 282{
 283        int ret;
 284        int sid;
 285        struct twl_client *twl;
 286        struct i2c_msg *msg;
 287
 288        if (unlikely(mod_no > TWL_MODULE_LAST)) {
 289                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 290                return -EPERM;
 291        }
 292        if (unlikely(!inuse)) {
 293                pr_err("%s: not initialized\n", DRIVER_NAME);
 294                return -EPERM;
 295        }
 296        sid = twl_map[mod_no].sid;
 297        if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
 298                pr_err("%s: module %d is not part of the pmic\n",
 299                       DRIVER_NAME, mod_no);
 300                return -EINVAL;
 301        }
 302        twl = &twl_modules[sid];
 303
 304        mutex_lock(&twl->xfer_lock);
 305        /*
 306         * [MSG1]: fill the register address data
 307         * fill the data Tx buffer
 308         */
 309        msg = &twl->xfer_msg[0];
 310        msg->addr = twl->address;
 311        msg->len = num_bytes + 1;
 312        msg->flags = 0;
 313        msg->buf = value;
 314        /* over write the first byte of buffer with the register address */
 315        *value = twl_map[mod_no].base + reg;
 316        ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
 317        mutex_unlock(&twl->xfer_lock);
 318
 319        /* i2c_transfer returns number of messages transferred */
 320        if (ret != 1) {
 321                pr_err("%s: i2c_write failed to transfer all messages\n",
 322                        DRIVER_NAME);
 323                if (ret < 0)
 324                        return ret;
 325                else
 326                        return -EIO;
 327        } else {
 328                return 0;
 329        }
 330}
 331EXPORT_SYMBOL(twl_i2c_write);
 332
 333/**
 334 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 335 * @mod_no: module number
 336 * @value: an array of num_bytes containing data to be read
 337 * @reg: register address (just offset will do)
 338 * @num_bytes: number of bytes to transfer
 339 *
 340 * Returns result of operation - num_bytes is success else failure.
 341 */
 342int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 343{
 344        int ret;
 345        u8 val;
 346        int sid;
 347        struct twl_client *twl;
 348        struct i2c_msg *msg;
 349
 350        if (unlikely(mod_no > TWL_MODULE_LAST)) {
 351                pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 352                return -EPERM;
 353        }
 354        if (unlikely(!inuse)) {
 355                pr_err("%s: not initialized\n", DRIVER_NAME);
 356                return -EPERM;
 357        }
 358        sid = twl_map[mod_no].sid;
 359        if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
 360                pr_err("%s: module %d is not part of the pmic\n",
 361                       DRIVER_NAME, mod_no);
 362                return -EINVAL;
 363        }
 364        twl = &twl_modules[sid];
 365
 366        mutex_lock(&twl->xfer_lock);
 367        /* [MSG1] fill the register address data */
 368        msg = &twl->xfer_msg[0];
 369        msg->addr = twl->address;
 370        msg->len = 1;
 371        msg->flags = 0; /* Read the register value */
 372        val = twl_map[mod_no].base + reg;
 373        msg->buf = &val;
 374        /* [MSG2] fill the data rx buffer */
 375        msg = &twl->xfer_msg[1];
 376        msg->addr = twl->address;
 377        msg->flags = I2C_M_RD;  /* Read the register value */
 378        msg->len = num_bytes;   /* only n bytes */
 379        msg->buf = value;
 380        ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
 381        mutex_unlock(&twl->xfer_lock);
 382
 383        /* i2c_transfer returns number of messages transferred */
 384        if (ret != 2) {
 385                pr_err("%s: i2c_read failed to transfer all messages\n",
 386                        DRIVER_NAME);
 387                if (ret < 0)
 388                        return ret;
 389                else
 390                        return -EIO;
 391        } else {
 392                return 0;
 393        }
 394}
 395EXPORT_SYMBOL(twl_i2c_read);
 396
 397/**
 398 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
 399 * @mod_no: module number
 400 * @value: the value to be written 8 bit
 401 * @reg: register address (just offset will do)
 402 *
 403 * Returns result of operation - 0 is success
 404 */
 405int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
 406{
 407
 408        /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
 409        u8 temp_buffer[2] = { 0 };
 410        /* offset 1 contains the data */
 411        temp_buffer[1] = value;
 412        return twl_i2c_write(mod_no, temp_buffer, reg, 1);
 413}
 414EXPORT_SYMBOL(twl_i2c_write_u8);
 415
 416/**
 417 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
 418 * @mod_no: module number
 419 * @value: the value read 8 bit
 420 * @reg: register address (just offset will do)
 421 *
 422 * Returns result of operation - 0 is success
 423 */
 424int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
 425{
 426        return twl_i2c_read(mod_no, value, reg, 1);
 427}
 428EXPORT_SYMBOL(twl_i2c_read_u8);
 429
 430/*----------------------------------------------------------------------*/
 431
 432/**
 433 * twl_read_idcode_register - API to read the IDCODE register.
 434 *
 435 * Unlocks the IDCODE register and read the 32 bit value.
 436 */
 437static int twl_read_idcode_register(void)
 438{
 439        int err;
 440
 441        err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 442                                                REG_UNLOCK_TEST_REG);
 443        if (err) {
 444                pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 445                goto fail;
 446        }
 447
 448        err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
 449                                                REG_IDCODE_7_0, 4);
 450        if (err) {
 451                pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 452                goto fail;
 453        }
 454
 455        err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 456        if (err)
 457                pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 458fail:
 459        return err;
 460}
 461
 462/**
 463 * twl_get_type - API to get TWL Si type.
 464 *
 465 * Api to get the TWL Si type from IDCODE value.
 466 */
 467int twl_get_type(void)
 468{
 469        return TWL_SIL_TYPE(twl_idcode);
 470}
 471EXPORT_SYMBOL_GPL(twl_get_type);
 472
 473/**
 474 * twl_get_version - API to get TWL Si version.
 475 *
 476 * Api to get the TWL Si version from IDCODE value.
 477 */
 478int twl_get_version(void)
 479{
 480        return TWL_SIL_REV(twl_idcode);
 481}
 482EXPORT_SYMBOL_GPL(twl_get_version);
 483
 484/**
 485 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
 486 *
 487 * Api to get the TWL HFCLK rate based on BOOT_CFG register.
 488 */
 489int twl_get_hfclk_rate(void)
 490{
 491        u8 ctrl;
 492        int rate;
 493
 494        twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
 495
 496        switch (ctrl & 0x3) {
 497        case HFCLK_FREQ_19p2_MHZ:
 498                rate = 19200000;
 499                break;
 500        case HFCLK_FREQ_26_MHZ:
 501                rate = 26000000;
 502                break;
 503        case HFCLK_FREQ_38p4_MHZ:
 504                rate = 38400000;
 505                break;
 506        default:
 507                pr_err("TWL4030: HFCLK is not configured\n");
 508                rate = -EINVAL;
 509                break;
 510        }
 511
 512        return rate;
 513}
 514EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
 515
 516static struct device *
 517add_numbered_child(unsigned chip, const char *name, int num,
 518                void *pdata, unsigned pdata_len,
 519                bool can_wakeup, int irq0, int irq1)
 520{
 521        struct platform_device  *pdev;
 522        struct twl_client       *twl = &twl_modules[chip];
 523        int                     status;
 524
 525        pdev = platform_device_alloc(name, num);
 526        if (!pdev) {
 527                dev_dbg(&twl->client->dev, "can't alloc dev\n");
 528                status = -ENOMEM;
 529                goto err;
 530        }
 531
 532        pdev->dev.parent = &twl->client->dev;
 533
 534        if (pdata) {
 535                status = platform_device_add_data(pdev, pdata, pdata_len);
 536                if (status < 0) {
 537                        dev_dbg(&pdev->dev, "can't add platform_data\n");
 538                        goto err;
 539                }
 540        }
 541
 542        if (irq0) {
 543                struct resource r[2] = {
 544                        { .start = irq0, .flags = IORESOURCE_IRQ, },
 545                        { .start = irq1, .flags = IORESOURCE_IRQ, },
 546                };
 547
 548                status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 549                if (status < 0) {
 550                        dev_dbg(&pdev->dev, "can't add irqs\n");
 551                        goto err;
 552                }
 553        }
 554
 555        status = platform_device_add(pdev);
 556        if (status == 0)
 557                device_init_wakeup(&pdev->dev, can_wakeup);
 558
 559err:
 560        if (status < 0) {
 561                platform_device_put(pdev);
 562                dev_err(&twl->client->dev, "can't add %s dev\n", name);
 563                return ERR_PTR(status);
 564        }
 565        return &pdev->dev;
 566}
 567
 568static inline struct device *add_child(unsigned chip, const char *name,
 569                void *pdata, unsigned pdata_len,
 570                bool can_wakeup, int irq0, int irq1)
 571{
 572        return add_numbered_child(chip, name, -1, pdata, pdata_len,
 573                can_wakeup, irq0, irq1);
 574}
 575
 576static struct device *
 577add_regulator_linked(int num, struct regulator_init_data *pdata,
 578                struct regulator_consumer_supply *consumers,
 579                unsigned num_consumers, unsigned long features)
 580{
 581        unsigned sub_chip_id;
 582        struct twl_regulator_driver_data drv_data;
 583
 584        /* regulator framework demands init_data ... */
 585        if (!pdata)
 586                return NULL;
 587
 588        if (consumers) {
 589                pdata->consumer_supplies = consumers;
 590                pdata->num_consumer_supplies = num_consumers;
 591        }
 592
 593        if (pdata->driver_data) {
 594                /* If we have existing drv_data, just add the flags */
 595                struct twl_regulator_driver_data *tmp;
 596                tmp = pdata->driver_data;
 597                tmp->features |= features;
 598        } else {
 599                /* add new driver data struct, used only during init */
 600                drv_data.features = features;
 601                drv_data.set_voltage = NULL;
 602                drv_data.get_voltage = NULL;
 603                drv_data.data = NULL;
 604                pdata->driver_data = &drv_data;
 605        }
 606
 607        /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 608        sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
 609        return add_numbered_child(sub_chip_id, "twl_reg", num,
 610                pdata, sizeof(*pdata), false, 0, 0);
 611}
 612
 613static struct device *
 614add_regulator(int num, struct regulator_init_data *pdata,
 615                unsigned long features)
 616{
 617        return add_regulator_linked(num, pdata, NULL, 0, features);
 618}
 619
 620/*
 621 * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 622 * for the PIH, and the next are for the PWR_INT SIH, since
 623 * that's how twl_init_irq() sets things up.
 624 */
 625
 626static int
 627add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
 628                unsigned long features)
 629{
 630        struct device   *child;
 631        unsigned sub_chip_id;
 632
 633        if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
 634                child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
 635                                pdata->gpio, sizeof(*pdata->gpio),
 636                                false, irq_base + GPIO_INTR_OFFSET, 0);
 637                if (IS_ERR(child))
 638                        return PTR_ERR(child);
 639        }
 640
 641        if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
 642                child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
 643                                pdata->keypad, sizeof(*pdata->keypad),
 644                                true, irq_base + KEYPAD_INTR_OFFSET, 0);
 645                if (IS_ERR(child))
 646                        return PTR_ERR(child);
 647        }
 648
 649        if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc) {
 650                child = add_child(2, "twl4030_madc",
 651                                pdata->madc, sizeof(*pdata->madc),
 652                                true, irq_base + MADC_INTR_OFFSET, 0);
 653                if (IS_ERR(child))
 654                        return PTR_ERR(child);
 655        }
 656
 657        if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
 658                /*
 659                 * REVISIT platform_data here currently might expose the
 660                 * "msecure" line ... but for now we just expect board
 661                 * setup to tell the chip "it's always ok to SET_TIME".
 662                 * Eventually, Linux might become more aware of such
 663                 * HW security concerns, and "least privilege".
 664                 */
 665                sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
 666                child = add_child(sub_chip_id, "twl_rtc",
 667                                NULL, 0,
 668                                true, irq_base + RTC_INTR_OFFSET, 0);
 669                if (IS_ERR(child))
 670                        return PTR_ERR(child);
 671        }
 672
 673        if (IS_ENABLED(CONFIG_PWM_TWL6030) && twl_class_is_6030()) {
 674                child = add_child(SUB_CHIP_ID1, "twl6030-pwm", NULL, 0,
 675                                  false, 0, 0);
 676                if (IS_ERR(child))
 677                        return PTR_ERR(child);
 678        }
 679
 680        if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
 681            twl_class_is_4030()) {
 682
 683                static struct regulator_consumer_supply usb1v5 = {
 684                        .supply =       "usb1v5",
 685                };
 686                static struct regulator_consumer_supply usb1v8 = {
 687                        .supply =       "usb1v8",
 688                };
 689                static struct regulator_consumer_supply usb3v1[] = {
 690                        { .supply =     "usb3v1" },
 691                        { .supply =     "bci3v1" },
 692                };
 693
 694        /* First add the regulators so that they can be used by transceiver */
 695                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 696                        /* this is a template that gets copied */
 697                        struct regulator_init_data usb_fixed = {
 698                                .constraints.valid_modes_mask =
 699                                        REGULATOR_MODE_NORMAL
 700                                        | REGULATOR_MODE_STANDBY,
 701                                .constraints.valid_ops_mask =
 702                                        REGULATOR_CHANGE_MODE
 703                                        | REGULATOR_CHANGE_STATUS,
 704                        };
 705
 706                        child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 707                                                      &usb_fixed, &usb1v5, 1,
 708                                                      features);
 709                        if (IS_ERR(child))
 710                                return PTR_ERR(child);
 711
 712                        child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 713                                                      &usb_fixed, &usb1v8, 1,
 714                                                      features);
 715                        if (IS_ERR(child))
 716                                return PTR_ERR(child);
 717
 718                        child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 719                                                      &usb_fixed, usb3v1, 2,
 720                                                      features);
 721                        if (IS_ERR(child))
 722                                return PTR_ERR(child);
 723
 724                }
 725
 726                child = add_child(0, "twl4030_usb",
 727                                pdata->usb, sizeof(*pdata->usb),
 728                                true,
 729                                /* irq0 = USB_PRES, irq1 = USB */
 730                                irq_base + USB_PRES_INTR_OFFSET,
 731                                irq_base + USB_INTR_OFFSET);
 732
 733                if (IS_ERR(child))
 734                        return PTR_ERR(child);
 735
 736                /* we need to connect regulators to this transceiver */
 737                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
 738                        usb1v5.dev_name = dev_name(child);
 739                        usb1v8.dev_name = dev_name(child);
 740                        usb3v1[0].dev_name = dev_name(child);
 741                }
 742        }
 743        if (IS_ENABLED(CONFIG_TWL6030_USB) && pdata->usb &&
 744            twl_class_is_6030()) {
 745
 746                static struct regulator_consumer_supply usb3v3;
 747                int regulator;
 748
 749                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 750                        /* this is a template that gets copied */
 751                        struct regulator_init_data usb_fixed = {
 752                                .constraints.valid_modes_mask =
 753                                        REGULATOR_MODE_NORMAL
 754                                        | REGULATOR_MODE_STANDBY,
 755                                .constraints.valid_ops_mask =
 756                                        REGULATOR_CHANGE_MODE
 757                                        | REGULATOR_CHANGE_STATUS,
 758                        };
 759
 760                        if (features & TWL6025_SUBCLASS) {
 761                                usb3v3.supply = "ldousb";
 762                                regulator = TWL6025_REG_LDOUSB;
 763                        } else {
 764                                usb3v3.supply = "vusb";
 765                                regulator = TWL6030_REG_VUSB;
 766                        }
 767                        child = add_regulator_linked(regulator, &usb_fixed,
 768                                                        &usb3v3, 1,
 769                                                        features);
 770                        if (IS_ERR(child))
 771                                return PTR_ERR(child);
 772                }
 773
 774                pdata->usb->features = features;
 775
 776                child = add_child(0, "twl6030_usb",
 777                        pdata->usb, sizeof(*pdata->usb),
 778                        true,
 779                        /* irq1 = VBUS_PRES, irq0 = USB ID */
 780                        irq_base + USBOTG_INTR_OFFSET,
 781                        irq_base + USB_PRES_INTR_OFFSET);
 782
 783                if (IS_ERR(child))
 784                        return PTR_ERR(child);
 785                /* we need to connect regulators to this transceiver */
 786                if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child)
 787                        usb3v3.dev_name = dev_name(child);
 788        } else if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) &&
 789                   twl_class_is_6030()) {
 790                if (features & TWL6025_SUBCLASS)
 791                        child = add_regulator(TWL6025_REG_LDOUSB,
 792                                                pdata->ldousb, features);
 793                else
 794                        child = add_regulator(TWL6030_REG_VUSB,
 795                                                pdata->vusb, features);
 796
 797                        if (IS_ERR(child))
 798                                        return PTR_ERR(child);
 799        }
 800
 801        if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
 802                child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
 803                if (IS_ERR(child))
 804                        return PTR_ERR(child);
 805        }
 806
 807        if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
 808                child = add_child(1, "twl4030_pwrbutton",
 809                                NULL, 0, true, irq_base + 8 + 0, 0);
 810                if (IS_ERR(child))
 811                        return PTR_ERR(child);
 812        }
 813
 814        if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
 815            twl_class_is_4030()) {
 816                sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
 817                child = add_child(sub_chip_id, "twl4030-audio",
 818                                pdata->audio, sizeof(*pdata->audio),
 819                                false, 0, 0);
 820                if (IS_ERR(child))
 821                        return PTR_ERR(child);
 822        }
 823
 824        /* twl4030 regulators */
 825        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
 826                child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 827                                        features);
 828                if (IS_ERR(child))
 829                        return PTR_ERR(child);
 830
 831                child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 832                                        features);
 833                if (IS_ERR(child))
 834                        return PTR_ERR(child);
 835
 836                child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 837                                        features);
 838                if (IS_ERR(child))
 839                        return PTR_ERR(child);
 840
 841                child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 842                                        features);
 843                if (IS_ERR(child))
 844                        return PTR_ERR(child);
 845
 846                child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 847                                        features);
 848                if (IS_ERR(child))
 849                        return PTR_ERR(child);
 850
 851                child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 852                                        features);
 853                if (IS_ERR(child))
 854                        return PTR_ERR(child);
 855
 856                child = add_regulator((features & TWL4030_VAUX2)
 857                                        ? TWL4030_REG_VAUX2_4030
 858                                        : TWL4030_REG_VAUX2,
 859                                pdata->vaux2, features);
 860                if (IS_ERR(child))
 861                        return PTR_ERR(child);
 862
 863                child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 864                                        features);
 865                if (IS_ERR(child))
 866                        return PTR_ERR(child);
 867
 868                child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 869                                        features);
 870                if (IS_ERR(child))
 871                        return PTR_ERR(child);
 872
 873                child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 874                                        features);
 875                if (IS_ERR(child))
 876                        return PTR_ERR(child);
 877        }
 878
 879        /* maybe add LDOs that are omitted on cost-reduced parts */
 880        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
 881          && twl_class_is_4030()) {
 882                child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 883                                        features);
 884                if (IS_ERR(child))
 885                        return PTR_ERR(child);
 886
 887                child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 888                                        features);
 889                if (IS_ERR(child))
 890                        return PTR_ERR(child);
 891
 892                child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 893                                        features);
 894                if (IS_ERR(child))
 895                        return PTR_ERR(child);
 896
 897                child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 898                                        features);
 899                if (IS_ERR(child))
 900                        return PTR_ERR(child);
 901
 902                child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 903                                        features);
 904                if (IS_ERR(child))
 905                        return PTR_ERR(child);
 906
 907                child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 908                                        features);
 909                if (IS_ERR(child))
 910                        return PTR_ERR(child);
 911        }
 912
 913        /* twl6030 regulators */
 914        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
 915                        !(features & TWL6025_SUBCLASS)) {
 916                child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
 917                                        features);
 918                if (IS_ERR(child))
 919                        return PTR_ERR(child);
 920
 921                child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
 922                                        features);
 923                if (IS_ERR(child))
 924                        return PTR_ERR(child);
 925
 926                child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
 927                                        features);
 928                if (IS_ERR(child))
 929                        return PTR_ERR(child);
 930
 931                child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
 932                                        features);
 933                if (IS_ERR(child))
 934                        return PTR_ERR(child);
 935
 936                child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
 937                                        features);
 938                if (IS_ERR(child))
 939                        return PTR_ERR(child);
 940
 941                child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
 942                                        features);
 943                if (IS_ERR(child))
 944                        return PTR_ERR(child);
 945
 946                child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
 947                                        features);
 948                if (IS_ERR(child))
 949                        return PTR_ERR(child);
 950
 951                child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
 952                                        features);
 953                if (IS_ERR(child))
 954                        return PTR_ERR(child);
 955
 956                child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
 957                                        features);
 958                if (IS_ERR(child))
 959                        return PTR_ERR(child);
 960
 961                child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
 962                                        features);
 963                if (IS_ERR(child))
 964                        return PTR_ERR(child);
 965
 966                child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
 967                                        features);
 968                if (IS_ERR(child))
 969                        return PTR_ERR(child);
 970
 971                child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
 972                                        features);
 973                if (IS_ERR(child))
 974                        return PTR_ERR(child);
 975
 976                child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
 977                                        features);
 978                if (IS_ERR(child))
 979                        return PTR_ERR(child);
 980
 981                child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
 982                                        features);
 983                if (IS_ERR(child))
 984                        return PTR_ERR(child);
 985        }
 986
 987        /* 6030 and 6025 share this regulator */
 988        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030()) {
 989                child = add_regulator(TWL6030_REG_VANA, pdata->vana,
 990                                        features);
 991                if (IS_ERR(child))
 992                        return PTR_ERR(child);
 993        }
 994
 995        /* twl6025 regulators */
 996        if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
 997                        (features & TWL6025_SUBCLASS)) {
 998                child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
 999                                        features);
1000                if (IS_ERR(child))
1001                        return PTR_ERR(child);
1002
1003                child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1004                                        features);
1005                if (IS_ERR(child))
1006                        return PTR_ERR(child);
1007
1008                child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1009                                        features);
1010                if (IS_ERR(child))
1011                        return PTR_ERR(child);
1012
1013                child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1014                                        features);
1015                if (IS_ERR(child))
1016                        return PTR_ERR(child);
1017
1018                child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1019                                        features);
1020                if (IS_ERR(child))
1021                        return PTR_ERR(child);
1022
1023                child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1024                                        features);
1025                if (IS_ERR(child))
1026                        return PTR_ERR(child);
1027
1028                child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1029                                        features);
1030                if (IS_ERR(child))
1031                        return PTR_ERR(child);
1032
1033                child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1034                                        features);
1035                if (IS_ERR(child))
1036                        return PTR_ERR(child);
1037
1038                child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1039                                        features);
1040                if (IS_ERR(child))
1041                        return PTR_ERR(child);
1042
1043                child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1044                                        features);
1045                if (IS_ERR(child))
1046                        return PTR_ERR(child);
1047
1048                child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1049                                        features);
1050                if (IS_ERR(child))
1051                        return PTR_ERR(child);
1052
1053        }
1054
1055        if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
1056                        !(features & (TPS_SUBSET | TWL5031))) {
1057                child = add_child(3, "twl4030_bci",
1058                                pdata->bci, sizeof(*pdata->bci), false,
1059                                /* irq0 = CHG_PRES, irq1 = BCI */
1060                                irq_base + BCI_PRES_INTR_OFFSET,
1061                                irq_base + BCI_INTR_OFFSET);
1062                if (IS_ERR(child))
1063                        return PTR_ERR(child);
1064        }
1065
1066        return 0;
1067}
1068
1069/*----------------------------------------------------------------------*/
1070
1071/*
1072 * These three functions initialize the on-chip clock framework,
1073 * letting it generate the right frequencies for USB, MADC, and
1074 * other purposes.
1075 */
1076static inline int __init protect_pm_master(void)
1077{
1078        int e = 0;
1079
1080        e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1081                        TWL4030_PM_MASTER_PROTECT_KEY);
1082        return e;
1083}
1084
1085static inline int __init unprotect_pm_master(void)
1086{
1087        int e = 0;
1088
1089        e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1090                        TWL4030_PM_MASTER_KEY_CFG1,
1091                        TWL4030_PM_MASTER_PROTECT_KEY);
1092        e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1093                        TWL4030_PM_MASTER_KEY_CFG2,
1094                        TWL4030_PM_MASTER_PROTECT_KEY);
1095
1096        return e;
1097}
1098
1099static void clocks_init(struct device *dev,
1100                        struct twl4030_clock_init_data *clock)
1101{
1102        int e = 0;
1103        struct clk *osc;
1104        u32 rate;
1105        u8 ctrl = HFCLK_FREQ_26_MHZ;
1106
1107        osc = clk_get(dev, "fck");
1108        if (IS_ERR(osc)) {
1109                printk(KERN_WARNING "Skipping twl internal clock init and "
1110                                "using bootloader value (unknown osc rate)\n");
1111                return;
1112        }
1113
1114        rate = clk_get_rate(osc);
1115        clk_put(osc);
1116
1117        switch (rate) {
1118        case 19200000:
1119                ctrl = HFCLK_FREQ_19p2_MHZ;
1120                break;
1121        case 26000000:
1122                ctrl = HFCLK_FREQ_26_MHZ;
1123                break;
1124        case 38400000:
1125                ctrl = HFCLK_FREQ_38p4_MHZ;
1126                break;
1127        }
1128
1129        ctrl |= HIGH_PERF_SQ;
1130        if (clock && clock->ck32k_lowpwr_enable)
1131                ctrl |= CK32K_LOWPWR_EN;
1132
1133        e |= unprotect_pm_master();
1134        /* effect->MADC+USB ck en */
1135        e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1136        e |= protect_pm_master();
1137
1138        if (e < 0)
1139                pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1140}
1141
1142/*----------------------------------------------------------------------*/
1143
1144
1145static int twl_remove(struct i2c_client *client)
1146{
1147        unsigned i, num_slaves;
1148        int status;
1149
1150        if (twl_class_is_4030()) {
1151                status = twl4030_exit_irq();
1152                num_slaves = TWL_NUM_SLAVES;
1153        } else {
1154                status = twl6030_exit_irq();
1155                num_slaves = TWL_NUM_SLAVES - 1;
1156        }
1157
1158        if (status < 0)
1159                return status;
1160
1161        for (i = 0; i < num_slaves; i++) {
1162                struct twl_client       *twl = &twl_modules[i];
1163
1164                if (twl->client && twl->client != client)
1165                        i2c_unregister_device(twl->client);
1166                twl_modules[i].client = NULL;
1167        }
1168        inuse = false;
1169        return 0;
1170}
1171
1172/* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1173static int __devinit
1174twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1175{
1176        struct twl4030_platform_data    *pdata = client->dev.platform_data;
1177        struct device_node              *node = client->dev.of_node;
1178        struct platform_device          *pdev;
1179        int                             irq_base = 0;
1180        int                             status;
1181        unsigned                        i, num_slaves;
1182
1183        pdev = platform_device_alloc(DRIVER_NAME, -1);
1184        if (!pdev) {
1185                dev_err(&client->dev, "can't alloc pdev\n");
1186                return -ENOMEM;
1187        }
1188
1189        status = platform_device_add(pdev);
1190        if (status) {
1191                platform_device_put(pdev);
1192                return status;
1193        }
1194
1195        if (node && !pdata) {
1196                /*
1197                 * XXX: Temporary pdata until the information is correctly
1198                 * retrieved by every TWL modules from DT.
1199                 */
1200                pdata = devm_kzalloc(&client->dev,
1201                                     sizeof(struct twl4030_platform_data),
1202                                     GFP_KERNEL);
1203                if (!pdata) {
1204                        status = -ENOMEM;
1205                        goto free;
1206                }
1207        }
1208
1209        if (!pdata) {
1210                dev_dbg(&client->dev, "no platform data?\n");
1211                status = -EINVAL;
1212                goto free;
1213        }
1214
1215        platform_set_drvdata(pdev, pdata);
1216
1217        if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1218                dev_dbg(&client->dev, "can't talk I2C?\n");
1219                status = -EIO;
1220                goto free;
1221        }
1222
1223        if (inuse) {
1224                dev_dbg(&client->dev, "driver is already in use\n");
1225                status = -EBUSY;
1226                goto free;
1227        }
1228
1229        if ((id->driver_data) & TWL6030_CLASS) {
1230                twl_id = TWL6030_CLASS_ID;
1231                twl_map = &twl6030_map[0];
1232                num_slaves = TWL_NUM_SLAVES - 1;
1233        } else {
1234                twl_id = TWL4030_CLASS_ID;
1235                twl_map = &twl4030_map[0];
1236                num_slaves = TWL_NUM_SLAVES;
1237        }
1238
1239        for (i = 0; i < num_slaves; i++) {
1240                struct twl_client *twl = &twl_modules[i];
1241
1242                twl->address = client->addr + i;
1243                if (i == 0) {
1244                        twl->client = client;
1245                } else {
1246                        twl->client = i2c_new_dummy(client->adapter,
1247                                        twl->address);
1248                        if (!twl->client) {
1249                                dev_err(&client->dev,
1250                                        "can't attach client %d\n", i);
1251                                status = -ENOMEM;
1252                                goto fail;
1253                        }
1254                }
1255                mutex_init(&twl->xfer_lock);
1256        }
1257
1258        inuse = true;
1259
1260        /* setup clock framework */
1261        clocks_init(&pdev->dev, pdata->clock);
1262
1263        /* read TWL IDCODE Register */
1264        if (twl_id == TWL4030_CLASS_ID) {
1265                status = twl_read_idcode_register();
1266                WARN(status < 0, "Error: reading twl_idcode register value\n");
1267        }
1268
1269        /* load power event scripts */
1270        if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power)
1271                twl4030_power_init(pdata->power);
1272
1273        /* Maybe init the T2 Interrupt subsystem */
1274        if (client->irq) {
1275                if (twl_class_is_4030()) {
1276                        twl4030_init_chip_irq(id->name);
1277                        irq_base = twl4030_init_irq(&client->dev, client->irq);
1278                } else {
1279                        irq_base = twl6030_init_irq(&client->dev, client->irq);
1280                }
1281
1282                if (irq_base < 0) {
1283                        status = irq_base;
1284                        goto fail;
1285                }
1286        }
1287
1288        /*
1289         * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1290         * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1291         * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1292         */
1293        if (twl_class_is_4030()) {
1294                u8 temp;
1295
1296                twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1297                temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1298                        I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1299                twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1300        }
1301
1302        status = -ENODEV;
1303        if (node)
1304                status = of_platform_populate(node, NULL, NULL, &client->dev);
1305        if (status)
1306                status = add_children(pdata, irq_base, id->driver_data);
1307
1308fail:
1309        if (status < 0)
1310                twl_remove(client);
1311free:
1312        if (status < 0)
1313                platform_device_unregister(pdev);
1314
1315        return status;
1316}
1317
1318static const struct i2c_device_id twl_ids[] = {
1319        { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1320        { "twl5030", 0 },               /* T2 updated */
1321        { "twl5031", TWL5031 },         /* TWL5030 updated */
1322        { "tps65950", 0 },              /* catalog version of twl5030 */
1323        { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1324        { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1325        { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1326                                           and vibrator. Charger in USB module*/
1327        { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1328        { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1329        { /* end of list */ },
1330};
1331MODULE_DEVICE_TABLE(i2c, twl_ids);
1332
1333/* One Client Driver , 4 Clients */
1334static struct i2c_driver twl_driver = {
1335        .driver.name    = DRIVER_NAME,
1336        .id_table       = twl_ids,
1337        .probe          = twl_probe,
1338        .remove         = twl_remove,
1339};
1340
1341static int __init twl_init(void)
1342{
1343        return i2c_add_driver(&twl_driver);
1344}
1345subsys_initcall(twl_init);
1346
1347static void __exit twl_exit(void)
1348{
1349        i2c_del_driver(&twl_driver);
1350}
1351module_exit(twl_exit);
1352
1353MODULE_AUTHOR("Texas Instruments, Inc.");
1354MODULE_DESCRIPTION("I2C Core interface for TWL");
1355MODULE_LICENSE("GPL");
1356
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