drivers/mfd/twl-core.c

   1 /*
   2  * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
   3  * and audio CODEC devices
   4  *
   5  * Copyright (C) 2005-2006 Texas Instruments, Inc.
   6  *
   7  * Modifications to defer interrupt handling to a kernel thread:
   8  * Copyright (C) 2006 MontaVista Software, Inc.
   9  *
  10  * Based on tlv320aic23.c:
  11  * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
  12  *
  13  * Code cleanup and modifications to IRQ handler.
  14  * by syed khasim <x0khasim@ti.com>
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  29  */
  30
  31 #include <linux/init.h>
  32 #include <linux/mutex.h>
  33 #include <linux/module.h>
  34 #include <linux/platform_device.h>
  35 #include <linux/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 #define TWL_NUM_SLAVES          4
  70
  71 #define SUB_CHIP_ID0 0
  72 #define SUB_CHIP_ID1 1
  73 #define SUB_CHIP_ID2 2
  74 #define SUB_CHIP_ID3 3
  75
  76 /* Base Address defns for twl4030_map[] */
  77
  78 /* subchip/slave 0 - USB ID */
  79 #define TWL4030_BASEADD_USB             0x0000
  80
  81 /* subchip/slave 1 - AUD ID */
  82 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
  83 #define TWL4030_BASEADD_GPIO            0x0098
  84 #define TWL4030_BASEADD_INTBR           0x0085
  85 #define TWL4030_BASEADD_PIH             0x0080
  86 #define TWL4030_BASEADD_TEST            0x004C
  87
  88 /* subchip/slave 2 - AUX ID */
  89 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
  90 #define TWL4030_BASEADD_LED             0x00EE
  91 #define TWL4030_BASEADD_MADC            0x0000
  92 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
  93 #define TWL4030_BASEADD_PRECHARGE       0x00AA
  94 #define TWL4030_BASEADD_PWM             0x00F8
  95 #define TWL4030_BASEADD_KEYPAD          0x00D2
  96
  97 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
  98 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
  99                                                   one */
 100
 101 /* subchip/slave 3 - POWER ID */
 102 #define TWL4030_BASEADD_BACKUP          0x0014
 103 #define TWL4030_BASEADD_INT             0x002E
 104 #define TWL4030_BASEADD_PM_MASTER       0x0036
 105 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
 106 #define TWL4030_BASEADD_RTC             0x001C
 107 #define TWL4030_BASEADD_SECURED_REG     0x0000
 108
 109 /* Triton Core internal information (END) */
 110
 111
 112 /* subchip/slave 0 0x48 - POWER */
 113 #define TWL6030_BASEADD_RTC             0x0000
 114 #define TWL6030_BASEADD_SECURED_REG     0x0017
 115 #define TWL6030_BASEADD_PM_MASTER       0x001F
 116 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 117 #define TWL6030_BASEADD_PM_MISC         0x00E2
 118 #define TWL6030_BASEADD_PM_PUPD         0x00F0
 119
 120 /* subchip/slave 1 0x49 - FEATURE */
 121 #define TWL6030_BASEADD_USB             0x0000
 122 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
 123 #define TWL6030_BASEADD_AUX             0x0090
 124 #define TWL6030_BASEADD_PWM             0x00BA
 125 #define TWL6030_BASEADD_GASGAUGE        0x00C0
 126 #define TWL6030_BASEADD_PIH             0x00D0
 127 #define TWL6030_BASEADD_CHARGER         0x00E0
 128 #define TWL6025_BASEADD_CHARGER         0x00DA
 129 #define TWL6030_BASEADD_LED             0x00F4
 130
 131 /* subchip/slave 2 0x4A - DFT */
 132 #define TWL6030_BASEADD_DIEID           0x00C0
 133
 134 /* subchip/slave 3 0x4B - AUDIO */
 135 #define TWL6030_BASEADD_AUDIO           0x0000
 136 #define TWL6030_BASEADD_RSV             0x0000
 137 #define TWL6030_BASEADD_ZERO            0x0000
 138
 139 /* Few power values */
 140 #define R_CFG_BOOT                      0x05
 141
 142 /* some fields in R_CFG_BOOT */
 143 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 144 #define HFCLK_FREQ_26_MHZ               (2 << 0)
 145 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 146 #define HIGH_PERF_SQ                    (1 << 3)
 147 #define CK32K_LOWPWR_EN                 (1 << 7)
 148
 149 /*----------------------------------------------------------------------*/
 150
 151 /* is driver active, bound to a chip? */
 152 static bool inuse;
 153
 154 /* TWL IDCODE Register value */
 155 static u32 twl_idcode;
 156
 157 static unsigned int twl_id;
 158 unsigned int twl_rev(void)
 159 {
 160         return twl_id;
 161 }
 162 EXPORT_SYMBOL(twl_rev);
 163
 164 /* Structure for each TWL4030/TWL6030 Slave */
 165 struct twl_client {
 166         struct i2c_client *client;
 167         struct regmap *regmap;
 168 };
 169
 170 static struct twl_client twl_modules[TWL_NUM_SLAVES];
 171
 172 /* mapping the module id to slave id and base address */
 173 struct twl_mapping {
 174         unsigned char sid;      /* Slave ID */
 175         unsigned char base;     /* base address */
 176 };
 177 static struct twl_mapping *twl_map;
 178
 179 static struct twl_mapping twl4030_map[] = {
 180         /*
 181          * NOTE:  don't change this table without updating the
 182          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 183          * so they continue to match the order in this table.
 184          */
 185
 186         /* Common IPs */
 187         { 0, TWL4030_BASEADD_USB },
 188         { 1, TWL4030_BASEADD_PIH },
 189         { 2, TWL4030_BASEADD_MAIN_CHARGE },
 190         { 3, TWL4030_BASEADD_PM_MASTER },
 191         { 3, TWL4030_BASEADD_PM_RECEIVER },
 192
 193         { 3, TWL4030_BASEADD_RTC },
 194         { 2, TWL4030_BASEADD_PWM },
 195         { 2, TWL4030_BASEADD_LED },
 196         { 3, TWL4030_BASEADD_SECURED_REG },
 197
 198         /* TWL4030 specific IPs */
 199         { 1, TWL4030_BASEADD_AUDIO_VOICE },
 200         { 1, TWL4030_BASEADD_GPIO },
 201         { 1, TWL4030_BASEADD_INTBR },
 202         { 1, TWL4030_BASEADD_TEST },
 203         { 2, TWL4030_BASEADD_KEYPAD },
 204
 205         { 2, TWL4030_BASEADD_MADC },
 206         { 2, TWL4030_BASEADD_INTERRUPTS },
 207         { 2, TWL4030_BASEADD_PRECHARGE },
 208         { 3, TWL4030_BASEADD_BACKUP },
 209         { 3, TWL4030_BASEADD_INT },
 210
 211         { 2, TWL5031_BASEADD_ACCESSORY },
 212         { 2, TWL5031_BASEADD_INTERRUPTS },
 213 };
 214
 215 static struct regmap_config twl4030_regmap_config[4] = {
 216         {
 217                 /* Address 0x48 */
 218                 .reg_bits = 8,
 219                 .val_bits = 8,
 220                 .max_register = 0xff,
 221         },
 222         {
 223                 /* Address 0x49 */
 224                 .reg_bits = 8,
 225                 .val_bits = 8,
 226                 .max_register = 0xff,
 227         },
 228         {
 229                 /* Address 0x4a */
 230                 .reg_bits = 8,
 231                 .val_bits = 8,
 232                 .max_register = 0xff,
 233         },
 234         {
 235                 /* Address 0x4b */
 236                 .reg_bits = 8,
 237                 .val_bits = 8,
 238                 .max_register = 0xff,
 239         },
 240 };
 241
 242 static struct twl_mapping twl6030_map[] = {
 243         /*
 244          * NOTE:  don't change this table without updating the
 245          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 246          * so they continue to match the order in this table.
 247          */
 248
 249         /* Common IPs */
 250         { 1, TWL6030_BASEADD_USB },
 251         { 1, TWL6030_BASEADD_PIH },
 252         { 1, TWL6030_BASEADD_CHARGER },
 253         { 0, TWL6030_BASEADD_PM_MASTER },
 254         { 0, TWL6030_BASEADD_PM_SLAVE_MISC },
 255
 256         { 0, TWL6030_BASEADD_RTC },
 257         { 1, TWL6030_BASEADD_PWM },
 258         { 1, TWL6030_BASEADD_LED },
 259         { 0, TWL6030_BASEADD_SECURED_REG },
 260
 261         /* TWL6030 specific IPs */
 262         { 0, TWL6030_BASEADD_ZERO },
 263         { 1, TWL6030_BASEADD_ZERO },
 264         { 2, TWL6030_BASEADD_ZERO },
 265         { 1, TWL6030_BASEADD_GPADC_CTRL },
 266         { 1, TWL6030_BASEADD_GASGAUGE },
 267 };
 268
 269 static struct regmap_config twl6030_regmap_config[3] = {
 270         {
 271                 /* Address 0x48 */
 272                 .reg_bits = 8,
 273                 .val_bits = 8,
 274                 .max_register = 0xff,
 275         },
 276         {
 277                 /* Address 0x49 */
 278                 .reg_bits = 8,
 279                 .val_bits = 8,
 280                 .max_register = 0xff,
 281         },
 282         {
 283                 /* Address 0x4a */
 284                 .reg_bits = 8,
 285                 .val_bits = 8,
 286                 .max_register = 0xff,
 287         },
 288 };
 289
 290 /*----------------------------------------------------------------------*/
 291
 292 static inline int twl_get_last_module(void)
 293 {
 294         if (twl_class_is_4030())
 295                 return TWL4030_MODULE_LAST;
 296         else
 297                 return TWL6030_MODULE_LAST;
 298 }
 299
 300 /* Exported Functions */
 301
 302 /**
 303  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 304  * @mod_no: module number
 305  * @value: an array of num_bytes+1 containing data to write
 306  * @reg: register address (just offset will do)
 307  * @num_bytes: number of bytes to transfer
 308  *
 309  * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
 310  * valid data starts at Offset 1.
 311  *
 312  * Returns the result of operation - 0 is success
 313  */
 314 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 315 {
 316         int ret;
 317         int sid;
 318         struct twl_client *twl;
 319
 320         if (unlikely(mod_no >= twl_get_last_module())) {
 321                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 322                 return -EPERM;
 323         }
 324         if (unlikely(!inuse)) {
 325                 pr_err("%s: not initialized\n", DRIVER_NAME);
 326                 return -EPERM;
 327         }
 328
 329         sid = twl_map[mod_no].sid;
 330         twl = &twl_modules[sid];
 331
 332         ret = regmap_bulk_write(twl->regmap, twl_map[mod_no].base + reg,
 333                                 value, 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 }
 341 EXPORT_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  */
 352 int 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(mod_no >= twl_get_last_module())) {
 359                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 360                 return -EPERM;
 361         }
 362         if (unlikely(!inuse)) {
 363                 pr_err("%s: not initialized\n", DRIVER_NAME);
 364                 return -EPERM;
 365         }
 366
 367         sid = twl_map[mod_no].sid;
 368         twl = &twl_modules[sid];
 369
 370         ret = regmap_bulk_read(twl->regmap, twl_map[mod_no].base + reg,
 371                                value, num_bytes);
 372
 373         if (ret)
 374                 pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
 375                        DRIVER_NAME, mod_no, reg, num_bytes);
 376
 377         return ret;
 378 }
 379 EXPORT_SYMBOL(twl_i2c_read);
 380
 381 /**
 382  * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
 383  * @mod_no: module number
 384  * @value: the value to be written 8 bit
 385  * @reg: register address (just offset will do)
 386  *
 387  * Returns result of operation - 0 is success
 388  */
 389 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
 390 {
 391         return twl_i2c_write(mod_no, &value, reg, 1);
 392 }
 393 EXPORT_SYMBOL(twl_i2c_write_u8);
 394
 395 /**
 396  * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
 397  * @mod_no: module number
 398  * @value: the value read 8 bit
 399  * @reg: register address (just offset will do)
 400  *
 401  * Returns result of operation - 0 is success
 402  */
 403 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
 404 {
 405         return twl_i2c_read(mod_no, value, reg, 1);
 406 }
 407 EXPORT_SYMBOL(twl_i2c_read_u8);
 408
 409 /*----------------------------------------------------------------------*/
 410
 411 /**
 412  * twl_read_idcode_register - API to read the IDCODE register.
 413  *
 414  * Unlocks the IDCODE register and read the 32 bit value.
 415  */
 416 static int twl_read_idcode_register(void)
 417 {
 418         int err;
 419
 420         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 421                                                 REG_UNLOCK_TEST_REG);
 422         if (err) {
 423                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 424                 goto fail;
 425         }
 426
 427         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
 428                                                 REG_IDCODE_7_0, 4);
 429         if (err) {
 430                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 431                 goto fail;
 432         }
 433
 434         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 435         if (err)
 436                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 437 fail:
 438         return err;
 439 }
 440
 441 /**
 442  * twl_get_type - API to get TWL Si type.
 443  *
 444  * Api to get the TWL Si type from IDCODE value.
 445  */
 446 int twl_get_type(void)
 447 {
 448         return TWL_SIL_TYPE(twl_idcode);
 449 }
 450 EXPORT_SYMBOL_GPL(twl_get_type);
 451
 452 /**
 453  * twl_get_version - API to get TWL Si version.
 454  *
 455  * Api to get the TWL Si version from IDCODE value.
 456  */
 457 int twl_get_version(void)
 458 {
 459         return TWL_SIL_REV(twl_idcode);
 460 }
 461 EXPORT_SYMBOL_GPL(twl_get_version);
 462
 463 /**
 464  * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
 465  *
 466  * Api to get the TWL HFCLK rate based on BOOT_CFG register.
 467  */
 468 int twl_get_hfclk_rate(void)
 469 {
 470         u8 ctrl;
 471         int rate;
 472
 473         twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
 474
 475         switch (ctrl & 0x3) {
 476         case HFCLK_FREQ_19p2_MHZ:
 477                 rate = 19200000;
 478                 break;
 479         case HFCLK_FREQ_26_MHZ:
 480                 rate = 26000000;
 481                 break;
 482         case HFCLK_FREQ_38p4_MHZ:
 483                 rate = 38400000;
 484                 break;
 485         default:
 486                 pr_err("TWL4030: HFCLK is not configured\n");
 487                 rate = -EINVAL;
 488                 break;
 489         }
 490
 491         return rate;
 492 }
 493 EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
 494
 495 static struct device *
 496 add_numbered_child(unsigned chip, const char *name, int num,
 497                 void *pdata, unsigned pdata_len,
 498                 bool can_wakeup, int irq0, int irq1)
 499 {
 500         struct platform_device  *pdev;
 501         struct twl_client       *twl = &twl_modules[chip];
 502         int                     status;
 503
 504         pdev = platform_device_alloc(name, num);
 505         if (!pdev) {
 506                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
 507                 status = -ENOMEM;
 508                 goto err;
 509         }
 510
 511         pdev->dev.parent = &twl->client->dev;
 512
 513         if (pdata) {
 514                 status = platform_device_add_data(pdev, pdata, pdata_len);
 515                 if (status < 0) {
 516                         dev_dbg(&pdev->dev, "can't add platform_data\n");
 517                         goto err;
 518                 }
 519         }
 520
 521         if (irq0) {
 522                 struct resource r[2] = {
 523                         { .start = irq0, .flags = IORESOURCE_IRQ, },
 524                         { .start = irq1, .flags = IORESOURCE_IRQ, },
 525                 };
 526
 527                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 528                 if (status < 0) {
 529                         dev_dbg(&pdev->dev, "can't add irqs\n");
 530                         goto err;
 531                 }
 532         }
 533
 534         status = platform_device_add(pdev);
 535         if (status == 0)
 536                 device_init_wakeup(&pdev->dev, can_wakeup);
 537
 538 err:
 539         if (status < 0) {
 540                 platform_device_put(pdev);
 541                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
 542                 return ERR_PTR(status);
 543         }
 544         return &pdev->dev;
 545 }
 546
 547 static inline struct device *add_child(unsigned chip, const char *name,
 548                 void *pdata, unsigned pdata_len,
 549                 bool can_wakeup, int irq0, int irq1)
 550 {
 551         return add_numbered_child(chip, name, -1, pdata, pdata_len,
 552                 can_wakeup, irq0, irq1);
 553 }
 554
 555 static struct device *
 556 add_regulator_linked(int num, struct regulator_init_data *pdata,
 557                 struct regulator_consumer_supply *consumers,
 558                 unsigned num_consumers, unsigned long features)
 559 {
 560         unsigned sub_chip_id;
 561         struct twl_regulator_driver_data drv_data;
 562
 563         /* regulator framework demands init_data ... */
 564         if (!pdata)
 565                 return NULL;
 566
 567         if (consumers) {
 568                 pdata->consumer_supplies = consumers;
 569                 pdata->num_consumer_supplies = num_consumers;
 570         }
 571
 572         if (pdata->driver_data) {
 573                 /* If we have existing drv_data, just add the flags */
 574                 struct twl_regulator_driver_data *tmp;
 575                 tmp = pdata->driver_data;
 576                 tmp->features |= features;
 577         } else {
 578                 /* add new driver data struct, used only during init */
 579                 drv_data.features = features;
 580                 drv_data.set_voltage = NULL;
 581                 drv_data.get_voltage = NULL;
 582                 drv_data.data = NULL;
 583                 pdata->driver_data = &drv_data;
 584         }
 585
 586         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 587         sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
 588         return add_numbered_child(sub_chip_id, "twl_reg", num,
 589                 pdata, sizeof(*pdata), false, 0, 0);
 590 }
 591
 592 static struct device *
 593 add_regulator(int num, struct regulator_init_data *pdata,
 594                 unsigned long features)
 595 {
 596         return add_regulator_linked(num, pdata, NULL, 0, features);
 597 }
 598
 599 /*
 600  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 601  * for the PIH, and the next are for the PWR_INT SIH, since
 602  * that's how twl_init_irq() sets things up.
 603  */
 604
 605 static int
 606 add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
 607                 unsigned long features)
 608 {
 609         struct device   *child;
 610         unsigned sub_chip_id;
 611
 612         if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
 613                 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
 614                                 pdata->gpio, sizeof(*pdata->gpio),
 615                                 false, irq_base + GPIO_INTR_OFFSET, 0);
 616                 if (IS_ERR(child))
 617                         return PTR_ERR(child);
 618         }
 619
 620         if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
 621                 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
 622                                 pdata->keypad, sizeof(*pdata->keypad),
 623                                 true, irq_base + KEYPAD_INTR_OFFSET, 0);
 624                 if (IS_ERR(child))
 625                         return PTR_ERR(child);
 626         }
 627
 628         if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&
 629             twl_class_is_4030()) {
 630                 child = add_child(SUB_CHIP_ID2, "twl4030_madc",
 631                                 pdata->madc, sizeof(*pdata->madc),
 632                                 true, irq_base + MADC_INTR_OFFSET, 0);
 633                 if (IS_ERR(child))
 634                         return PTR_ERR(child);
 635         }
 636
 637         if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
 638                 /*
 639                  * REVISIT platform_data here currently might expose the
 640                  * "msecure" line ... but for now we just expect board
 641                  * setup to tell the chip "it's always ok to SET_TIME".
 642                  * Eventually, Linux might become more aware of such
 643                  * HW security concerns, and "least privilege".
 644                  */
 645                 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
 646                 child = add_child(sub_chip_id, "twl_rtc", NULL, 0,
 647                                 true, irq_base + RTC_INTR_OFFSET, 0);
 648                 if (IS_ERR(child))
 649                         return PTR_ERR(child);
 650         }
 651
 652         if (IS_ENABLED(CONFIG_PWM_TWL)) {
 653                 child = add_child(SUB_CHIP_ID1, "twl-pwm", NULL, 0,
 654                                   false, 0, 0);
 655                 if (IS_ERR(child))
 656                         return PTR_ERR(child);
 657         }
 658
 659         if (IS_ENABLED(CONFIG_PWM_TWL_LED)) {
 660                 child = add_child(SUB_CHIP_ID1, "twl-pwmled", NULL, 0,
 661                                   false, 0, 0);
 662                 if (IS_ERR(child))
 663                         return PTR_ERR(child);
 664         }
 665
 666         if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
 667             twl_class_is_4030()) {
 668
 669                 static struct regulator_consumer_supply usb1v5 = {
 670                         .supply =       "usb1v5",
 671                 };
 672                 static struct regulator_consumer_supply usb1v8 = {
 673                         .supply =       "usb1v8",
 674                 };
 675                 static struct regulator_consumer_supply usb3v1[] = {
 676                         { .supply =     "usb3v1" },
 677                         { .supply =     "bci3v1" },
 678                 };
 679
 680         /* First add the regulators so that they can be used by transceiver */
 681                 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 682                         /* this is a template that gets copied */
 683                         struct regulator_init_data usb_fixed = {
 684                                 .constraints.valid_modes_mask =
 685                                         REGULATOR_MODE_NORMAL
 686                                         | REGULATOR_MODE_STANDBY,
 687                                 .constraints.valid_ops_mask =
 688                                         REGULATOR_CHANGE_MODE
 689                                         | REGULATOR_CHANGE_STATUS,
 690                         };
 691
 692                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 693                                                       &usb_fixed, &usb1v5, 1,
 694                                                       features);
 695                         if (IS_ERR(child))
 696                                 return PTR_ERR(child);
 697
 698                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 699                                                       &usb_fixed, &usb1v8, 1,
 700                                                       features);
 701                         if (IS_ERR(child))
 702                                 return PTR_ERR(child);
 703
 704                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 705                                                       &usb_fixed, usb3v1, 2,
 706                                                       features);
 707                         if (IS_ERR(child))
 708                                 return PTR_ERR(child);
 709
 710                 }
 711
 712                 child = add_child(SUB_CHIP_ID0, "twl4030_usb",
 713                                 pdata->usb, sizeof(*pdata->usb), true,
 714                                 /* irq0 = USB_PRES, irq1 = USB */
 715                                 irq_base + USB_PRES_INTR_OFFSET,
 716                                 irq_base + USB_INTR_OFFSET);
 717
 718                 if (IS_ERR(child))
 719                         return PTR_ERR(child);
 720
 721                 /* we need to connect regulators to this transceiver */
 722                 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
 723                         usb1v5.dev_name = dev_name(child);
 724                         usb1v8.dev_name = dev_name(child);
 725                         usb3v1[0].dev_name = dev_name(child);
 726                 }
 727         }
 728         if (IS_ENABLED(CONFIG_TWL6030_USB) && pdata->usb &&
 729             twl_class_is_6030()) {
 730
 731                 static struct regulator_consumer_supply usb3v3;
 732                 int regulator;
 733
 734                 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 735                         /* this is a template that gets copied */
 736                         struct regulator_init_data usb_fixed = {
 737                                 .constraints.valid_modes_mask =
 738                                         REGULATOR_MODE_NORMAL
 739                                         | REGULATOR_MODE_STANDBY,
 740                                 .constraints.valid_ops_mask =
 741                                         REGULATOR_CHANGE_MODE
 742                                         | REGULATOR_CHANGE_STATUS,
 743                         };
 744
 745                         if (features & TWL6025_SUBCLASS) {
 746                                 usb3v3.supply = "ldousb";
 747                                 regulator = TWL6025_REG_LDOUSB;
 748                         } else {
 749                                 usb3v3.supply = "vusb";
 750                                 regulator = TWL6030_REG_VUSB;
 751                         }
 752                         child = add_regulator_linked(regulator, &usb_fixed,
 753                                                         &usb3v3, 1,
 754                                                         features);
 755                         if (IS_ERR(child))
 756                                 return PTR_ERR(child);
 757                 }
 758
 759                 pdata->usb->features = features;
 760
 761                 child = add_child(SUB_CHIP_ID0, "twl6030_usb",
 762                         pdata->usb, sizeof(*pdata->usb), true,
 763                         /* irq1 = VBUS_PRES, irq0 = USB ID */
 764                         irq_base + USBOTG_INTR_OFFSET,
 765                         irq_base + USB_PRES_INTR_OFFSET);
 766
 767                 if (IS_ERR(child))
 768                         return PTR_ERR(child);
 769                 /* we need to connect regulators to this transceiver */
 770                 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child)
 771                         usb3v3.dev_name = dev_name(child);
 772         } else if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) &&
 773                    twl_class_is_6030()) {
 774                 if (features & TWL6025_SUBCLASS)
 775                         child = add_regulator(TWL6025_REG_LDOUSB,
 776                                                 pdata->ldousb, features);
 777                 else
 778                         child = add_regulator(TWL6030_REG_VUSB,
 779                                                 pdata->vusb, features);
 780
 781                         if (IS_ERR(child))
 782                                         return PTR_ERR(child);
 783         }
 784
 785         if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
 786                 child = add_child(SUB_CHIP_ID3, "twl4030_wdt", NULL, 0,
 787                                   false, 0, 0);
 788                 if (IS_ERR(child))
 789                         return PTR_ERR(child);
 790         }
 791
 792         if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
 793                 child = add_child(SUB_CHIP_ID3, "twl4030_pwrbutton", NULL, 0,
 794                                   true, irq_base + 8 + 0, 0);
 795                 if (IS_ERR(child))
 796                         return PTR_ERR(child);
 797         }
 798
 799         if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
 800             twl_class_is_4030()) {
 801                 child = add_child(SUB_CHIP_ID1, "twl4030-audio",
 802                                 pdata->audio, sizeof(*pdata->audio),
 803                                 false, 0, 0);
 804                 if (IS_ERR(child))
 805                         return PTR_ERR(child);
 806         }
 807
 808         /* twl4030 regulators */
 809         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
 810                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 811                                         features);
 812                 if (IS_ERR(child))
 813                         return PTR_ERR(child);
 814
 815                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 816                                         features);
 817                 if (IS_ERR(child))
 818                         return PTR_ERR(child);
 819
 820                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 821                                         features);
 822                 if (IS_ERR(child))
 823                         return PTR_ERR(child);
 824
 825                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 826                                         features);
 827                 if (IS_ERR(child))
 828                         return PTR_ERR(child);
 829
 830                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 831                                         features);
 832                 if (IS_ERR(child))
 833                         return PTR_ERR(child);
 834
 835                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 836                                         features);
 837                 if (IS_ERR(child))
 838                         return PTR_ERR(child);
 839
 840                 child = add_regulator((features & TWL4030_VAUX2)
 841                                         ? TWL4030_REG_VAUX2_4030
 842                                         : TWL4030_REG_VAUX2,
 843                                 pdata->vaux2, features);
 844                 if (IS_ERR(child))
 845                         return PTR_ERR(child);
 846
 847                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 848                                         features);
 849                 if (IS_ERR(child))
 850                         return PTR_ERR(child);
 851
 852                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 853                                         features);
 854                 if (IS_ERR(child))
 855                         return PTR_ERR(child);
 856
 857                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 858                                         features);
 859                 if (IS_ERR(child))
 860                         return PTR_ERR(child);
 861         }
 862
 863         /* maybe add LDOs that are omitted on cost-reduced parts */
 864         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
 865           && twl_class_is_4030()) {
 866                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 867                                         features);
 868                 if (IS_ERR(child))
 869                         return PTR_ERR(child);
 870
 871                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 872                                         features);
 873                 if (IS_ERR(child))
 874                         return PTR_ERR(child);
 875
 876                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 877                                         features);
 878                 if (IS_ERR(child))
 879                         return PTR_ERR(child);
 880
 881                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 882                                         features);
 883                 if (IS_ERR(child))
 884                         return PTR_ERR(child);
 885
 886                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 887                                         features);
 888                 if (IS_ERR(child))
 889                         return PTR_ERR(child);
 890
 891                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 892                                         features);
 893                 if (IS_ERR(child))
 894                         return PTR_ERR(child);
 895         }
 896
 897         /* twl6030 regulators */
 898         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
 899                         !(features & TWL6025_SUBCLASS)) {
 900                 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
 901                                         features);
 902                 if (IS_ERR(child))
 903                         return PTR_ERR(child);
 904
 905                 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
 906                                         features);
 907                 if (IS_ERR(child))
 908                         return PTR_ERR(child);
 909
 910                 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
 911                                         features);
 912                 if (IS_ERR(child))
 913                         return PTR_ERR(child);
 914
 915                 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
 916                                         features);
 917                 if (IS_ERR(child))
 918                         return PTR_ERR(child);
 919
 920                 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
 921                                         features);
 922                 if (IS_ERR(child))
 923                         return PTR_ERR(child);
 924
 925                 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
 926                                         features);
 927                 if (IS_ERR(child))
 928                         return PTR_ERR(child);
 929
 930                 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
 931                                         features);
 932                 if (IS_ERR(child))
 933                         return PTR_ERR(child);
 934
 935                 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
 936                                         features);
 937                 if (IS_ERR(child))
 938                         return PTR_ERR(child);
 939
 940                 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
 941                                         features);
 942                 if (IS_ERR(child))
 943                         return PTR_ERR(child);
 944
 945                 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
 946                                         features);
 947                 if (IS_ERR(child))
 948                         return PTR_ERR(child);
 949
 950                 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
 951                                         features);
 952                 if (IS_ERR(child))
 953                         return PTR_ERR(child);
 954
 955                 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
 956                                         features);
 957                 if (IS_ERR(child))
 958                         return PTR_ERR(child);
 959
 960                 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
 961                                         features);
 962                 if (IS_ERR(child))
 963                         return PTR_ERR(child);
 964
 965                 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
 966                                         features);
 967                 if (IS_ERR(child))
 968                         return PTR_ERR(child);
 969         }
 970
 971         /* 6030 and 6025 share this regulator */
 972         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030()) {
 973                 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
 974                                         features);
 975                 if (IS_ERR(child))
 976                         return PTR_ERR(child);
 977         }
 978
 979         /* twl6025 regulators */
 980         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
 981                         (features & TWL6025_SUBCLASS)) {
 982                 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
 983                                         features);
 984                 if (IS_ERR(child))
 985                         return PTR_ERR(child);
 986
 987                 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
 988                                         features);
 989                 if (IS_ERR(child))
 990                         return PTR_ERR(child);
 991
 992                 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
 993                                         features);
 994                 if (IS_ERR(child))
 995                         return PTR_ERR(child);
 996
 997                 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
 998                                         features);
 999                 if (IS_ERR(child))
1000                         return PTR_ERR(child);
1001
1002                 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1003                                         features);
1004                 if (IS_ERR(child))
1005                         return PTR_ERR(child);
1006
1007                 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1008                                         features);
1009                 if (IS_ERR(child))
1010                         return PTR_ERR(child);
1011
1012                 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1013                                         features);
1014                 if (IS_ERR(child))
1015                         return PTR_ERR(child);
1016
1017                 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1018                                         features);
1019                 if (IS_ERR(child))
1020                         return PTR_ERR(child);
1021
1022                 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1023                                         features);
1024                 if (IS_ERR(child))
1025                         return PTR_ERR(child);
1026
1027                 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1028                                         features);
1029                 if (IS_ERR(child))
1030                         return PTR_ERR(child);
1031
1032                 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1033                                         features);
1034                 if (IS_ERR(child))
1035                         return PTR_ERR(child);
1036
1037         }
1038
1039         if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
1040                         !(features & (TPS_SUBSET | TWL5031))) {
1041                 child = add_child(SUB_CHIP_ID3, "twl4030_bci",
1042                                 pdata->bci, sizeof(*pdata->bci), false,
1043                                 /* irq0 = CHG_PRES, irq1 = BCI */
1044                                 irq_base + BCI_PRES_INTR_OFFSET,
1045                                 irq_base + BCI_INTR_OFFSET);
1046                 if (IS_ERR(child))
1047                         return PTR_ERR(child);
1048         }
1049
1050         return 0;
1051 }
1052
1053 /*----------------------------------------------------------------------*/
1054
1055 /*
1056  * These three functions initialize the on-chip clock framework,
1057  * letting it generate the right frequencies for USB, MADC, and
1058  * other purposes.
1059  */
1060 static inline int __init protect_pm_master(void)
1061 {
1062         int e = 0;
1063
1064         e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
1065                              TWL4030_PM_MASTER_PROTECT_KEY);
1066         return e;
1067 }
1068
1069 static inline int __init unprotect_pm_master(void)
1070 {
1071         int e = 0;
1072
1073         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
1074                               TWL4030_PM_MASTER_PROTECT_KEY);
1075         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
1076                               TWL4030_PM_MASTER_PROTECT_KEY);
1077
1078         return e;
1079 }
1080
1081 static void clocks_init(struct device *dev,
1082                         struct twl4030_clock_init_data *clock)
1083 {
1084         int e = 0;
1085         struct clk *osc;
1086         u32 rate;
1087         u8 ctrl = HFCLK_FREQ_26_MHZ;
1088
1089         osc = clk_get(dev, "fck");
1090         if (IS_ERR(osc)) {
1091                 printk(KERN_WARNING "Skipping twl internal clock init and "
1092                                 "using bootloader value (unknown osc rate)\n");
1093                 return;
1094         }
1095
1096         rate = clk_get_rate(osc);
1097         clk_put(osc);
1098
1099         switch (rate) {
1100         case 19200000:
1101                 ctrl = HFCLK_FREQ_19p2_MHZ;
1102                 break;
1103         case 26000000:
1104                 ctrl = HFCLK_FREQ_26_MHZ;
1105                 break;
1106         case 38400000:
1107                 ctrl = HFCLK_FREQ_38p4_MHZ;
1108                 break;
1109         }
1110
1111         ctrl |= HIGH_PERF_SQ;
1112         if (clock && clock->ck32k_lowpwr_enable)
1113                 ctrl |= CK32K_LOWPWR_EN;
1114
1115         e |= unprotect_pm_master();
1116         /* effect->MADC+USB ck en */
1117         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1118         e |= protect_pm_master();
1119
1120         if (e < 0)
1121                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1122 }
1123
1124 /*----------------------------------------------------------------------*/
1125
1126
1127 static int twl_remove(struct i2c_client *client)
1128 {
1129         unsigned i, num_slaves;
1130         int status;
1131
1132         if (twl_class_is_4030()) {
1133                 status = twl4030_exit_irq();
1134                 num_slaves = TWL_NUM_SLAVES;
1135         } else {
1136                 status = twl6030_exit_irq();
1137                 num_slaves = TWL_NUM_SLAVES - 1;
1138         }
1139
1140         if (status < 0)
1141                 return status;
1142
1143         for (i = 0; i < num_slaves; i++) {
1144                 struct twl_client       *twl = &twl_modules[i];
1145
1146                 if (twl->client && twl->client != client)
1147                         i2c_unregister_device(twl->client);
1148                 twl_modules[i].client = NULL;
1149         }
1150         inuse = false;
1151         return 0;
1152 }
1153
1154 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1155 static int
1156 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1157 {
1158         struct twl4030_platform_data    *pdata = client->dev.platform_data;
1159         struct device_node              *node = client->dev.of_node;
1160         struct platform_device          *pdev;
1161         struct regmap_config            *twl_regmap_config;
1162         int                             irq_base = 0;
1163         int                             status;
1164         unsigned                        i, num_slaves;
1165
1166         pdev = platform_device_alloc(DRIVER_NAME, -1);
1167         if (!pdev) {
1168                 dev_err(&client->dev, "can't alloc pdev\n");
1169                 return -ENOMEM;
1170         }
1171
1172         status = platform_device_add(pdev);
1173         if (status) {
1174                 platform_device_put(pdev);
1175                 return status;
1176         }
1177
1178         if (node && !pdata) {
1179                 /*
1180                  * XXX: Temporary pdata until the information is correctly
1181                  * retrieved by every TWL modules from DT.
1182                  */
1183                 pdata = devm_kzalloc(&client->dev,
1184                                      sizeof(struct twl4030_platform_data),
1185                                      GFP_KERNEL);
1186                 if (!pdata) {
1187                         status = -ENOMEM;
1188                         goto free;
1189                 }
1190         }
1191
1192         if (!pdata) {
1193                 dev_dbg(&client->dev, "no platform data?\n");
1194                 status = -EINVAL;
1195                 goto free;
1196         }
1197
1198         platform_set_drvdata(pdev, pdata);
1199
1200         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1201                 dev_dbg(&client->dev, "can't talk I2C?\n");
1202                 status = -EIO;
1203                 goto free;
1204         }
1205
1206         if (inuse) {
1207                 dev_dbg(&client->dev, "driver is already in use\n");
1208                 status = -EBUSY;
1209                 goto free;
1210         }
1211
1212         if ((id->driver_data) & TWL6030_CLASS) {
1213                 twl_id = TWL6030_CLASS_ID;
1214                 twl_map = &twl6030_map[0];
1215                 /* The charger base address is different in twl6025 */
1216                 if ((id->driver_data) & TWL6025_SUBCLASS)
1217                         twl_map[TWL_MODULE_MAIN_CHARGE].base =
1218                                                         TWL6025_BASEADD_CHARGER;
1219                 twl_regmap_config = twl6030_regmap_config;
1220                 num_slaves = TWL_NUM_SLAVES - 1;
1221         } else {
1222                 twl_id = TWL4030_CLASS_ID;
1223                 twl_map = &twl4030_map[0];
1224                 twl_regmap_config = twl4030_regmap_config;
1225                 num_slaves = TWL_NUM_SLAVES;
1226         }
1227
1228         for (i = 0; i < num_slaves; i++) {
1229                 struct twl_client *twl = &twl_modules[i];
1230
1231                 if (i == 0) {
1232                         twl->client = client;
1233                 } else {
1234                         twl->client = i2c_new_dummy(client->adapter,
1235                                                     client->addr + i);
1236                         if (!twl->client) {
1237                                 dev_err(&client->dev,
1238                                         "can't attach client %d\n", i);
1239                                 status = -ENOMEM;
1240                                 goto fail;
1241                         }
1242                 }
1243
1244                 twl->regmap = devm_regmap_init_i2c(twl->client,
1245                                                    &twl_regmap_config[i]);
1246                 if (IS_ERR(twl->regmap)) {
1247                         status = PTR_ERR(twl->regmap);
1248                         dev_err(&client->dev,
1249                                 "Failed to allocate regmap %d, err: %d\n", i,
1250                                 status);
1251                         goto fail;
1252                 }
1253         }
1254
1255         inuse = true;
1256
1257         /* setup clock framework */
1258         clocks_init(&pdev->dev, pdata->clock);
1259
1260         /* read TWL IDCODE Register */
1261         if (twl_id == TWL4030_CLASS_ID) {
1262                 status = twl_read_idcode_register();
1263                 WARN(status < 0, "Error: reading twl_idcode register value\n");
1264         }
1265
1266         /* load power event scripts */
1267         if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power)
1268                 twl4030_power_init(pdata->power);
1269
1270         /* Maybe init the T2 Interrupt subsystem */
1271         if (client->irq) {
1272                 if (twl_class_is_4030()) {
1273                         twl4030_init_chip_irq(id->name);
1274                         irq_base = twl4030_init_irq(&client->dev, client->irq);
1275                 } else {
1276                         irq_base = twl6030_init_irq(&client->dev, client->irq);
1277                 }
1278
1279                 if (irq_base < 0) {
1280                         status = irq_base;
1281                         goto fail;
1282                 }
1283         }
1284
1285         /*
1286          * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1287          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1288          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1289          */
1290         if (twl_class_is_4030()) {
1291                 u8 temp;
1292
1293                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1294                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1295                         I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1296                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1297         }
1298
1299         status = -ENODEV;
1300         if (node)
1301                 status = of_platform_populate(node, NULL, NULL, &client->dev);
1302         if (status)
1303                 status = add_children(pdata, irq_base, id->driver_data);
1304
1305 fail:
1306         if (status < 0)
1307                 twl_remove(client);
1308 free:
1309         if (status < 0)
1310                 platform_device_unregister(pdev);
1311
1312         return status;
1313 }
1314
1315 static const struct i2c_device_id twl_ids[] = {
1316         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1317         { "twl5030", 0 },               /* T2 updated */
1318         { "twl5031", TWL5031 },         /* TWL5030 updated */
1319         { "tps65950", 0 },              /* catalog version of twl5030 */
1320         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1321         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1322         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1323                                            and vibrator. Charger in USB module*/
1324         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1325         { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1326         { /* end of list */ },
1327 };
1328 MODULE_DEVICE_TABLE(i2c, twl_ids);
1329
1330 /* One Client Driver , 4 Clients */
1331 static struct i2c_driver twl_driver = {
1332         .driver.name    = DRIVER_NAME,
1333         .id_table       = twl_ids,
1334         .probe          = twl_probe,
1335         .remove         = twl_remove,
1336 };
1337
1338 static int __init twl_init(void)
1339 {
1340         return i2c_add_driver(&twl_driver);
1341 }
1342 subsys_initcall(twl_init);
1343
1344 static void __exit twl_exit(void)
1345 {
1346         i2c_del_driver(&twl_driver);
1347 }
1348 module_exit(twl_exit);
1349
1350 MODULE_AUTHOR("Texas Instruments, Inc.");
1351 MODULE_DESCRIPTION("I2C Core interface for TWL");
1352 MODULE_LICENSE("GPL");