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 /* Register descriptions for audio */
  51 #include <linux/mfd/twl4030-audio.h>
  52
  53 #include "twl-core.h"
  54
  55 /*
  56  * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  57  * Management and System Companion Device" chips originally designed for
  58  * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  59  * often at around 3 Mbit/sec, including for interrupt handling.
  60  *
  61  * This driver core provides genirq support for the interrupts emitted,
  62  * by the various modules, and exports register access primitives.
  63  *
  64  * FIXME this driver currently requires use of the first interrupt line
  65  * (and associated registers).
  66  */
  67
  68 #define DRIVER_NAME                     "twl"
  69
  70 /* Triton Core internal information (BEGIN) */
  71
  72 /* Base Address defns for twl4030_map[] */
  73
  74 /* subchip/slave 0 - USB ID */
  75 #define TWL4030_BASEADD_USB             0x0000
  76
  77 /* subchip/slave 1 - AUD ID */
  78 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
  79 #define TWL4030_BASEADD_GPIO            0x0098
  80 #define TWL4030_BASEADD_INTBR           0x0085
  81 #define TWL4030_BASEADD_PIH             0x0080
  82 #define TWL4030_BASEADD_TEST            0x004C
  83
  84 /* subchip/slave 2 - AUX ID */
  85 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
  86 #define TWL4030_BASEADD_LED             0x00EE
  87 #define TWL4030_BASEADD_MADC            0x0000
  88 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
  89 #define TWL4030_BASEADD_PRECHARGE       0x00AA
  90 #define TWL4030_BASEADD_PWM             0x00F8
  91 #define TWL4030_BASEADD_KEYPAD          0x00D2
  92
  93 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
  94 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
  95                                                   one */
  96
  97 /* subchip/slave 3 - POWER ID */
  98 #define TWL4030_BASEADD_BACKUP          0x0014
  99 #define TWL4030_BASEADD_INT             0x002E
 100 #define TWL4030_BASEADD_PM_MASTER       0x0036
 101 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
 102 #define TWL4030_BASEADD_RTC             0x001C
 103 #define TWL4030_BASEADD_SECURED_REG     0x0000
 104
 105 /* Triton Core internal information (END) */
 106
 107
 108 /* subchip/slave 0 0x48 - POWER */
 109 #define TWL6030_BASEADD_RTC             0x0000
 110 #define TWL6030_BASEADD_SECURED_REG     0x0017
 111 #define TWL6030_BASEADD_PM_MASTER       0x001F
 112 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
 113 #define TWL6030_BASEADD_PM_MISC         0x00E2
 114 #define TWL6030_BASEADD_PM_PUPD         0x00F0
 115
 116 /* subchip/slave 1 0x49 - FEATURE */
 117 #define TWL6030_BASEADD_USB             0x0000
 118 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
 119 #define TWL6030_BASEADD_AUX             0x0090
 120 #define TWL6030_BASEADD_PWM             0x00BA
 121 #define TWL6030_BASEADD_GASGAUGE        0x00C0
 122 #define TWL6030_BASEADD_PIH             0x00D0
 123 #define TWL6030_BASEADD_CHARGER         0x00E0
 124 #define TWL6032_BASEADD_CHARGER         0x00DA
 125 #define TWL6030_BASEADD_LED             0x00F4
 126
 127 /* subchip/slave 2 0x4A - DFT */
 128 #define TWL6030_BASEADD_DIEID           0x00C0
 129
 130 /* subchip/slave 3 0x4B - AUDIO */
 131 #define TWL6030_BASEADD_AUDIO           0x0000
 132 #define TWL6030_BASEADD_RSV             0x0000
 133 #define TWL6030_BASEADD_ZERO            0x0000
 134
 135 /* Few power values */
 136 #define R_CFG_BOOT                      0x05
 137
 138 /* some fields in R_CFG_BOOT */
 139 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
 140 #define HFCLK_FREQ_26_MHZ               (2 << 0)
 141 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
 142 #define HIGH_PERF_SQ                    (1 << 3)
 143 #define CK32K_LOWPWR_EN                 (1 << 7)
 144
 145 /*----------------------------------------------------------------------*/
 146
 147 /* Structure for each TWL4030/TWL6030 Slave */
 148 struct twl_client {
 149         struct i2c_client *client;
 150         struct regmap *regmap;
 151 };
 152
 153 /* mapping the module id to slave id and base address */
 154 struct twl_mapping {
 155         unsigned char sid;      /* Slave ID */
 156         unsigned char base;     /* base address */
 157 };
 158
 159 struct twl_private {
 160         bool ready; /* The core driver is ready to be used */
 161         u32 twl_idcode; /* TWL IDCODE Register value */
 162         unsigned int twl_id;
 163
 164         struct twl_mapping *twl_map;
 165         struct twl_client *twl_modules;
 166 };
 167
 168 static struct twl_private *twl_priv;
 169
 170 static struct twl_mapping twl4030_map[] = {
 171         /*
 172          * NOTE:  don't change this table without updating the
 173          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 174          * so they continue to match the order in this table.
 175          */
 176
 177         /* Common IPs */
 178         { 0, TWL4030_BASEADD_USB },
 179         { 1, TWL4030_BASEADD_PIH },
 180         { 2, TWL4030_BASEADD_MAIN_CHARGE },
 181         { 3, TWL4030_BASEADD_PM_MASTER },
 182         { 3, TWL4030_BASEADD_PM_RECEIVER },
 183
 184         { 3, TWL4030_BASEADD_RTC },
 185         { 2, TWL4030_BASEADD_PWM },
 186         { 2, TWL4030_BASEADD_LED },
 187         { 3, TWL4030_BASEADD_SECURED_REG },
 188
 189         /* TWL4030 specific IPs */
 190         { 1, TWL4030_BASEADD_AUDIO_VOICE },
 191         { 1, TWL4030_BASEADD_GPIO },
 192         { 1, TWL4030_BASEADD_INTBR },
 193         { 1, TWL4030_BASEADD_TEST },
 194         { 2, TWL4030_BASEADD_KEYPAD },
 195
 196         { 2, TWL4030_BASEADD_MADC },
 197         { 2, TWL4030_BASEADD_INTERRUPTS },
 198         { 2, TWL4030_BASEADD_PRECHARGE },
 199         { 3, TWL4030_BASEADD_BACKUP },
 200         { 3, TWL4030_BASEADD_INT },
 201
 202         { 2, TWL5031_BASEADD_ACCESSORY },
 203         { 2, TWL5031_BASEADD_INTERRUPTS },
 204 };
 205
 206 static struct reg_default twl4030_49_defaults[] = {
 207         /* Audio Registers */
 208         { 0x01, 0x00}, /* CODEC_MODE    */
 209         { 0x02, 0x00}, /* OPTION        */
 210         /* 0x03  Unused */
 211         { 0x04, 0x00}, /* MICBIAS_CTL   */
 212         { 0x05, 0x00}, /* ANAMICL       */
 213         { 0x06, 0x00}, /* ANAMICR       */
 214         { 0x07, 0x00}, /* AVADC_CTL     */
 215         { 0x08, 0x00}, /* ADCMICSEL     */
 216         { 0x09, 0x00}, /* DIGMIXING     */
 217         { 0x0a, 0x0f}, /* ATXL1PGA      */
 218         { 0x0b, 0x0f}, /* ATXR1PGA      */
 219         { 0x0c, 0x0f}, /* AVTXL2PGA     */
 220         { 0x0d, 0x0f}, /* AVTXR2PGA     */
 221         { 0x0e, 0x00}, /* AUDIO_IF      */
 222         { 0x0f, 0x00}, /* VOICE_IF      */
 223         { 0x10, 0x3f}, /* ARXR1PGA      */
 224         { 0x11, 0x3f}, /* ARXL1PGA      */
 225         { 0x12, 0x3f}, /* ARXR2PGA      */
 226         { 0x13, 0x3f}, /* ARXL2PGA      */
 227         { 0x14, 0x25}, /* VRXPGA        */
 228         { 0x15, 0x00}, /* VSTPGA        */
 229         { 0x16, 0x00}, /* VRX2ARXPGA    */
 230         { 0x17, 0x00}, /* AVDAC_CTL     */
 231         { 0x18, 0x00}, /* ARX2VTXPGA    */
 232         { 0x19, 0x32}, /* ARXL1_APGA_CTL*/
 233         { 0x1a, 0x32}, /* ARXR1_APGA_CTL*/
 234         { 0x1b, 0x32}, /* ARXL2_APGA_CTL*/
 235         { 0x1c, 0x32}, /* ARXR2_APGA_CTL*/
 236         { 0x1d, 0x00}, /* ATX2ARXPGA    */
 237         { 0x1e, 0x00}, /* BT_IF         */
 238         { 0x1f, 0x55}, /* BTPGA         */
 239         { 0x20, 0x00}, /* BTSTPGA       */
 240         { 0x21, 0x00}, /* EAR_CTL       */
 241         { 0x22, 0x00}, /* HS_SEL        */
 242         { 0x23, 0x00}, /* HS_GAIN_SET   */
 243         { 0x24, 0x00}, /* HS_POPN_SET   */
 244         { 0x25, 0x00}, /* PREDL_CTL     */
 245         { 0x26, 0x00}, /* PREDR_CTL     */
 246         { 0x27, 0x00}, /* PRECKL_CTL    */
 247         { 0x28, 0x00}, /* PRECKR_CTL    */
 248         { 0x29, 0x00}, /* HFL_CTL       */
 249         { 0x2a, 0x00}, /* HFR_CTL       */
 250         { 0x2b, 0x05}, /* ALC_CTL       */
 251         { 0x2c, 0x00}, /* ALC_SET1      */
 252         { 0x2d, 0x00}, /* ALC_SET2      */
 253         { 0x2e, 0x00}, /* BOOST_CTL     */
 254         { 0x2f, 0x00}, /* SOFTVOL_CTL   */
 255         { 0x30, 0x13}, /* DTMF_FREQSEL  */
 256         { 0x31, 0x00}, /* DTMF_TONEXT1H */
 257         { 0x32, 0x00}, /* DTMF_TONEXT1L */
 258         { 0x33, 0x00}, /* DTMF_TONEXT2H */
 259         { 0x34, 0x00}, /* DTMF_TONEXT2L */
 260         { 0x35, 0x79}, /* DTMF_TONOFF   */
 261         { 0x36, 0x11}, /* DTMF_WANONOFF */
 262         { 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */
 263         { 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */
 264         { 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */
 265         { 0x3a, 0x06}, /* APLL_CTL */
 266         { 0x3b, 0x00}, /* DTMF_CTL */
 267         { 0x3c, 0x44}, /* DTMF_PGA_CTL2 (0x3C) */
 268         { 0x3d, 0x69}, /* DTMF_PGA_CTL1 (0x3D) */
 269         { 0x3e, 0x00}, /* MISC_SET_1 */
 270         { 0x3f, 0x00}, /* PCMBTMUX */
 271         /* 0x40 - 0x42  Unused */
 272         { 0x43, 0x00}, /* RX_PATH_SEL */
 273         { 0x44, 0x32}, /* VDL_APGA_CTL */
 274         { 0x45, 0x00}, /* VIBRA_CTL */
 275         { 0x46, 0x00}, /* VIBRA_SET */
 276         { 0x47, 0x00}, /* VIBRA_PWM_SET */
 277         { 0x48, 0x00}, /* ANAMIC_GAIN   */
 278         { 0x49, 0x00}, /* MISC_SET_2    */
 279         /* End of Audio Registers */
 280 };
 281
 282 static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg)
 283 {
 284         switch (reg) {
 285         case 0x00:
 286         case 0x03:
 287         case 0x40:
 288         case 0x41:
 289         case 0x42:
 290                 return false;
 291         default:
 292                 return true;
 293         }
 294 }
 295
 296 static const struct regmap_range twl4030_49_volatile_ranges[] = {
 297         regmap_reg_range(TWL4030_BASEADD_TEST, 0xff),
 298 };
 299
 300 static const struct regmap_access_table twl4030_49_volatile_table = {
 301         .yes_ranges = twl4030_49_volatile_ranges,
 302         .n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges),
 303 };
 304
 305 static struct regmap_config twl4030_regmap_config[4] = {
 306         {
 307                 /* Address 0x48 */
 308                 .reg_bits = 8,
 309                 .val_bits = 8,
 310                 .max_register = 0xff,
 311         },
 312         {
 313                 /* Address 0x49 */
 314                 .reg_bits = 8,
 315                 .val_bits = 8,
 316                 .max_register = 0xff,
 317
 318                 .readable_reg = twl4030_49_nop_reg,
 319                 .writeable_reg = twl4030_49_nop_reg,
 320
 321                 .volatile_table = &twl4030_49_volatile_table,
 322
 323                 .reg_defaults = twl4030_49_defaults,
 324                 .num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults),
 325                 .cache_type = REGCACHE_RBTREE,
 326         },
 327         {
 328                 /* Address 0x4a */
 329                 .reg_bits = 8,
 330                 .val_bits = 8,
 331                 .max_register = 0xff,
 332         },
 333         {
 334                 /* Address 0x4b */
 335                 .reg_bits = 8,
 336                 .val_bits = 8,
 337                 .max_register = 0xff,
 338         },
 339 };
 340
 341 static struct twl_mapping twl6030_map[] = {
 342         /*
 343          * NOTE:  don't change this table without updating the
 344          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
 345          * so they continue to match the order in this table.
 346          */
 347
 348         /* Common IPs */
 349         { 1, TWL6030_BASEADD_USB },
 350         { 1, TWL6030_BASEADD_PIH },
 351         { 1, TWL6030_BASEADD_CHARGER },
 352         { 0, TWL6030_BASEADD_PM_MASTER },
 353         { 0, TWL6030_BASEADD_PM_SLAVE_MISC },
 354
 355         { 0, TWL6030_BASEADD_RTC },
 356         { 1, TWL6030_BASEADD_PWM },
 357         { 1, TWL6030_BASEADD_LED },
 358         { 0, TWL6030_BASEADD_SECURED_REG },
 359
 360         /* TWL6030 specific IPs */
 361         { 0, TWL6030_BASEADD_ZERO },
 362         { 1, TWL6030_BASEADD_ZERO },
 363         { 2, TWL6030_BASEADD_ZERO },
 364         { 1, TWL6030_BASEADD_GPADC_CTRL },
 365         { 1, TWL6030_BASEADD_GASGAUGE },
 366 };
 367
 368 static struct regmap_config twl6030_regmap_config[3] = {
 369         {
 370                 /* Address 0x48 */
 371                 .reg_bits = 8,
 372                 .val_bits = 8,
 373                 .max_register = 0xff,
 374         },
 375         {
 376                 /* Address 0x49 */
 377                 .reg_bits = 8,
 378                 .val_bits = 8,
 379                 .max_register = 0xff,
 380         },
 381         {
 382                 /* Address 0x4a */
 383                 .reg_bits = 8,
 384                 .val_bits = 8,
 385                 .max_register = 0xff,
 386         },
 387 };
 388
 389 /*----------------------------------------------------------------------*/
 390
 391 static inline int twl_get_num_slaves(void)
 392 {
 393         if (twl_class_is_4030())
 394                 return 4; /* TWL4030 class have four slave address */
 395         else
 396                 return 3; /* TWL6030 class have three slave address */
 397 }
 398
 399 static inline int twl_get_last_module(void)
 400 {
 401         if (twl_class_is_4030())
 402                 return TWL4030_MODULE_LAST;
 403         else
 404                 return TWL6030_MODULE_LAST;
 405 }
 406
 407 /* Exported Functions */
 408
 409 unsigned int twl_rev(void)
 410 {
 411         return twl_priv ? twl_priv->twl_id : 0;
 412 }
 413 EXPORT_SYMBOL(twl_rev);
 414
 415 /**
 416  * twl_get_regmap - Get the regmap associated with the given module
 417  * @mod_no: module number
 418  *
 419  * Returns the regmap pointer or NULL in case of failure.
 420  */
 421 static struct regmap *twl_get_regmap(u8 mod_no)
 422 {
 423         int sid;
 424         struct twl_client *twl;
 425
 426         if (unlikely(!twl_priv || !twl_priv->ready)) {
 427                 pr_err("%s: not initialized\n", DRIVER_NAME);
 428                 return NULL;
 429         }
 430         if (unlikely(mod_no >= twl_get_last_module())) {
 431                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 432                 return NULL;
 433         }
 434
 435         sid = twl_priv->twl_map[mod_no].sid;
 436         twl = &twl_priv->twl_modules[sid];
 437
 438         return twl->regmap;
 439 }
 440
 441 /**
 442  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 443  * @mod_no: module number
 444  * @value: an array of num_bytes+1 containing data to write
 445  * @reg: register address (just offset will do)
 446  * @num_bytes: number of bytes to transfer
 447  *
 448  * Returns the result of operation - 0 is success
 449  */
 450 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 451 {
 452         struct regmap *regmap = twl_get_regmap(mod_no);
 453         int ret;
 454
 455         if (!regmap)
 456                 return -EPERM;
 457
 458         ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg,
 459                                 value, num_bytes);
 460
 461         if (ret)
 462                 pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
 463                        DRIVER_NAME, mod_no, reg, num_bytes);
 464
 465         return ret;
 466 }
 467 EXPORT_SYMBOL(twl_i2c_write);
 468
 469 /**
 470  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 471  * @mod_no: module number
 472  * @value: an array of num_bytes containing data to be read
 473  * @reg: register address (just offset will do)
 474  * @num_bytes: number of bytes to transfer
 475  *
 476  * Returns result of operation - num_bytes is success else failure.
 477  */
 478 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 479 {
 480         struct regmap *regmap = twl_get_regmap(mod_no);
 481         int ret;
 482
 483         if (!regmap)
 484                 return -EPERM;
 485
 486         ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg,
 487                                value, num_bytes);
 488
 489         if (ret)
 490                 pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
 491                        DRIVER_NAME, mod_no, reg, num_bytes);
 492
 493         return ret;
 494 }
 495 EXPORT_SYMBOL(twl_i2c_read);
 496
 497 /**
 498  * twl_regcache_bypass - Configure the regcache bypass for the regmap associated
 499  *                       with the module
 500  * @mod_no: module number
 501  * @enable: Regcache bypass state
 502  *
 503  * Returns 0 else failure.
 504  */
 505 int twl_set_regcache_bypass(u8 mod_no, bool enable)
 506 {
 507         struct regmap *regmap = twl_get_regmap(mod_no);
 508
 509         if (!regmap)
 510                 return -EPERM;
 511
 512         regcache_cache_bypass(regmap, enable);
 513
 514         return 0;
 515 }
 516 EXPORT_SYMBOL(twl_set_regcache_bypass);
 517
 518 /*----------------------------------------------------------------------*/
 519
 520 /**
 521  * twl_read_idcode_register - API to read the IDCODE register.
 522  *
 523  * Unlocks the IDCODE register and read the 32 bit value.
 524  */
 525 static int twl_read_idcode_register(void)
 526 {
 527         int err;
 528
 529         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 530                                                 REG_UNLOCK_TEST_REG);
 531         if (err) {
 532                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 533                 goto fail;
 534         }
 535
 536         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),
 537                                                 REG_IDCODE_7_0, 4);
 538         if (err) {
 539                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 540                 goto fail;
 541         }
 542
 543         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 544         if (err)
 545                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 546 fail:
 547         return err;
 548 }
 549
 550 /**
 551  * twl_get_type - API to get TWL Si type.
 552  *
 553  * Api to get the TWL Si type from IDCODE value.
 554  */
 555 int twl_get_type(void)
 556 {
 557         return TWL_SIL_TYPE(twl_priv->twl_idcode);
 558 }
 559 EXPORT_SYMBOL_GPL(twl_get_type);
 560
 561 /**
 562  * twl_get_version - API to get TWL Si version.
 563  *
 564  * Api to get the TWL Si version from IDCODE value.
 565  */
 566 int twl_get_version(void)
 567 {
 568         return TWL_SIL_REV(twl_priv->twl_idcode);
 569 }
 570 EXPORT_SYMBOL_GPL(twl_get_version);
 571
 572 /**
 573  * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
 574  *
 575  * Api to get the TWL HFCLK rate based on BOOT_CFG register.
 576  */
 577 int twl_get_hfclk_rate(void)
 578 {
 579         u8 ctrl;
 580         int rate;
 581
 582         twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
 583
 584         switch (ctrl & 0x3) {
 585         case HFCLK_FREQ_19p2_MHZ:
 586                 rate = 19200000;
 587                 break;
 588         case HFCLK_FREQ_26_MHZ:
 589                 rate = 26000000;
 590                 break;
 591         case HFCLK_FREQ_38p4_MHZ:
 592                 rate = 38400000;
 593                 break;
 594         default:
 595                 pr_err("TWL4030: HFCLK is not configured\n");
 596                 rate = -EINVAL;
 597                 break;
 598         }
 599
 600         return rate;
 601 }
 602 EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
 603
 604 static struct device *
 605 add_numbered_child(unsigned mod_no, const char *name, int num,
 606                 void *pdata, unsigned pdata_len,
 607                 bool can_wakeup, int irq0, int irq1)
 608 {
 609         struct platform_device  *pdev;
 610         struct twl_client       *twl;
 611         int                     status, sid;
 612
 613         if (unlikely(mod_no >= twl_get_last_module())) {
 614                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 615                 return ERR_PTR(-EPERM);
 616         }
 617         sid = twl_priv->twl_map[mod_no].sid;
 618         twl = &twl_priv->twl_modules[sid];
 619
 620         pdev = platform_device_alloc(name, num);
 621         if (!pdev) {
 622                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
 623                 status = -ENOMEM;
 624                 goto err;
 625         }
 626
 627         pdev->dev.parent = &twl->client->dev;
 628
 629         if (pdata) {
 630                 status = platform_device_add_data(pdev, pdata, pdata_len);
 631                 if (status < 0) {
 632                         dev_dbg(&pdev->dev, "can't add platform_data\n");
 633                         goto err;
 634                 }
 635         }
 636
 637         if (irq0) {
 638                 struct resource r[2] = {
 639                         { .start = irq0, .flags = IORESOURCE_IRQ, },
 640                         { .start = irq1, .flags = IORESOURCE_IRQ, },
 641                 };
 642
 643                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 644                 if (status < 0) {
 645                         dev_dbg(&pdev->dev, "can't add irqs\n");
 646                         goto err;
 647                 }
 648         }
 649
 650         status = platform_device_add(pdev);
 651         if (status == 0)
 652                 device_init_wakeup(&pdev->dev, can_wakeup);
 653
 654 err:
 655         if (status < 0) {
 656                 platform_device_put(pdev);
 657                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
 658                 return ERR_PTR(status);
 659         }
 660         return &pdev->dev;
 661 }
 662
 663 static inline struct device *add_child(unsigned mod_no, const char *name,
 664                 void *pdata, unsigned pdata_len,
 665                 bool can_wakeup, int irq0, int irq1)
 666 {
 667         return add_numbered_child(mod_no, name, -1, pdata, pdata_len,
 668                 can_wakeup, irq0, irq1);
 669 }
 670
 671 static struct device *
 672 add_regulator_linked(int num, struct regulator_init_data *pdata,
 673                 struct regulator_consumer_supply *consumers,
 674                 unsigned num_consumers, unsigned long features)
 675 {
 676         struct twl_regulator_driver_data drv_data;
 677
 678         /* regulator framework demands init_data ... */
 679         if (!pdata)
 680                 return NULL;
 681
 682         if (consumers) {
 683                 pdata->consumer_supplies = consumers;
 684                 pdata->num_consumer_supplies = num_consumers;
 685         }
 686
 687         if (pdata->driver_data) {
 688                 /* If we have existing drv_data, just add the flags */
 689                 struct twl_regulator_driver_data *tmp;
 690                 tmp = pdata->driver_data;
 691                 tmp->features |= features;
 692         } else {
 693                 /* add new driver data struct, used only during init */
 694                 drv_data.features = features;
 695                 drv_data.set_voltage = NULL;
 696                 drv_data.get_voltage = NULL;
 697                 drv_data.data = NULL;
 698                 pdata->driver_data = &drv_data;
 699         }
 700
 701         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 702         return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num,
 703                 pdata, sizeof(*pdata), false, 0, 0);
 704 }
 705
 706 static struct device *
 707 add_regulator(int num, struct regulator_init_data *pdata,
 708                 unsigned long features)
 709 {
 710         return add_regulator_linked(num, pdata, NULL, 0, features);
 711 }
 712
 713 /*
 714  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 715  * for the PIH, and the next are for the PWR_INT SIH, since
 716  * that's how twl_init_irq() sets things up.
 717  */
 718
 719 static int
 720 add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
 721                 unsigned long features)
 722 {
 723         struct device   *child;
 724
 725         if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
 726                 child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio",
 727                                 pdata->gpio, sizeof(*pdata->gpio),
 728                                 false, irq_base + GPIO_INTR_OFFSET, 0);
 729                 if (IS_ERR(child))
 730                         return PTR_ERR(child);
 731         }
 732
 733         if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
 734                 child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad",
 735                                 pdata->keypad, sizeof(*pdata->keypad),
 736                                 true, irq_base + KEYPAD_INTR_OFFSET, 0);
 737                 if (IS_ERR(child))
 738                         return PTR_ERR(child);
 739         }
 740
 741         if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&
 742             twl_class_is_4030()) {
 743                 child = add_child(TWL4030_MODULE_MADC, "twl4030_madc",
 744                                 pdata->madc, sizeof(*pdata->madc),
 745                                 true, irq_base + MADC_INTR_OFFSET, 0);
 746                 if (IS_ERR(child))
 747                         return PTR_ERR(child);
 748         }
 749
 750         if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
 751                 /*
 752                  * REVISIT platform_data here currently might expose the
 753                  * "msecure" line ... but for now we just expect board
 754                  * setup to tell the chip "it's always ok to SET_TIME".
 755                  * Eventually, Linux might become more aware of such
 756                  * HW security concerns, and "least privilege".
 757                  */
 758                 child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0,
 759                                 true, irq_base + RTC_INTR_OFFSET, 0);
 760                 if (IS_ERR(child))
 761                         return PTR_ERR(child);
 762         }
 763
 764         if (IS_ENABLED(CONFIG_PWM_TWL)) {
 765                 child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0,
 766                                   false, 0, 0);
 767                 if (IS_ERR(child))
 768                         return PTR_ERR(child);
 769         }
 770
 771         if (IS_ENABLED(CONFIG_PWM_TWL_LED)) {
 772                 child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0,
 773                                   false, 0, 0);
 774                 if (IS_ERR(child))
 775                         return PTR_ERR(child);
 776         }
 777
 778         if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
 779             twl_class_is_4030()) {
 780
 781                 static struct regulator_consumer_supply usb1v5 = {
 782                         .supply =       "usb1v5",
 783                 };
 784                 static struct regulator_consumer_supply usb1v8 = {
 785                         .supply =       "usb1v8",
 786                 };
 787                 static struct regulator_consumer_supply usb3v1[] = {
 788                         { .supply =     "usb3v1" },
 789                         { .supply =     "bci3v1" },
 790                 };
 791
 792         /* First add the regulators so that they can be used by transceiver */
 793                 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 794                         /* this is a template that gets copied */
 795                         struct regulator_init_data usb_fixed = {
 796                                 .constraints.valid_modes_mask =
 797                                         REGULATOR_MODE_NORMAL
 798                                         | REGULATOR_MODE_STANDBY,
 799                                 .constraints.valid_ops_mask =
 800                                         REGULATOR_CHANGE_MODE
 801                                         | REGULATOR_CHANGE_STATUS,
 802                         };
 803
 804                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 805                                                       &usb_fixed, &usb1v5, 1,
 806                                                       features);
 807                         if (IS_ERR(child))
 808                                 return PTR_ERR(child);
 809
 810                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 811                                                       &usb_fixed, &usb1v8, 1,
 812                                                       features);
 813                         if (IS_ERR(child))
 814                                 return PTR_ERR(child);
 815
 816                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 817                                                       &usb_fixed, usb3v1, 2,
 818                                                       features);
 819                         if (IS_ERR(child))
 820                                 return PTR_ERR(child);
 821
 822                 }
 823
 824                 child = add_child(TWL_MODULE_USB, "twl4030_usb",
 825                                 pdata->usb, sizeof(*pdata->usb), true,
 826                                 /* irq0 = USB_PRES, irq1 = USB */
 827                                 irq_base + USB_PRES_INTR_OFFSET,
 828                                 irq_base + USB_INTR_OFFSET);
 829
 830                 if (IS_ERR(child))
 831                         return PTR_ERR(child);
 832
 833                 /* we need to connect regulators to this transceiver */
 834                 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
 835                         usb1v5.dev_name = dev_name(child);
 836                         usb1v8.dev_name = dev_name(child);
 837                         usb3v1[0].dev_name = dev_name(child);
 838                 }
 839         }
 840
 841         if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
 842                 child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL,
 843                                   0, false, 0, 0);
 844                 if (IS_ERR(child))
 845                         return PTR_ERR(child);
 846         }
 847
 848         if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
 849                 child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton",
 850                                   NULL, 0, true, irq_base + 8 + 0, 0);
 851                 if (IS_ERR(child))
 852                         return PTR_ERR(child);
 853         }
 854
 855         if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
 856             twl_class_is_4030()) {
 857                 child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio",
 858                                 pdata->audio, sizeof(*pdata->audio),
 859                                 false, 0, 0);
 860                 if (IS_ERR(child))
 861                         return PTR_ERR(child);
 862         }
 863
 864         /* twl4030 regulators */
 865         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
 866                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 867                                         features);
 868                 if (IS_ERR(child))
 869                         return PTR_ERR(child);
 870
 871                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 872                                         features);
 873                 if (IS_ERR(child))
 874                         return PTR_ERR(child);
 875
 876                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 877                                         features);
 878                 if (IS_ERR(child))
 879                         return PTR_ERR(child);
 880
 881                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 882                                         features);
 883                 if (IS_ERR(child))
 884                         return PTR_ERR(child);
 885
 886                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 887                                         features);
 888                 if (IS_ERR(child))
 889                         return PTR_ERR(child);
 890
 891                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 892                                         features);
 893                 if (IS_ERR(child))
 894                         return PTR_ERR(child);
 895
 896                 child = add_regulator((features & TWL4030_VAUX2)
 897                                         ? TWL4030_REG_VAUX2_4030
 898                                         : TWL4030_REG_VAUX2,
 899                                 pdata->vaux2, features);
 900                 if (IS_ERR(child))
 901                         return PTR_ERR(child);
 902
 903                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 904                                         features);
 905                 if (IS_ERR(child))
 906                         return PTR_ERR(child);
 907
 908                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 909                                         features);
 910                 if (IS_ERR(child))
 911                         return PTR_ERR(child);
 912
 913                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 914                                         features);
 915                 if (IS_ERR(child))
 916                         return PTR_ERR(child);
 917         }
 918
 919         /* maybe add LDOs that are omitted on cost-reduced parts */
 920         if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
 921           && twl_class_is_4030()) {
 922                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 923                                         features);
 924                 if (IS_ERR(child))
 925                         return PTR_ERR(child);
 926
 927                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 928                                         features);
 929                 if (IS_ERR(child))
 930                         return PTR_ERR(child);
 931
 932                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 933                                         features);
 934                 if (IS_ERR(child))
 935                         return PTR_ERR(child);
 936
 937                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 938                                         features);
 939                 if (IS_ERR(child))
 940                         return PTR_ERR(child);
 941
 942                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 943                                         features);
 944                 if (IS_ERR(child))
 945                         return PTR_ERR(child);
 946
 947                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 948                                         features);
 949                 if (IS_ERR(child))
 950                         return PTR_ERR(child);
 951         }
 952
 953         if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
 954                         !(features & (TPS_SUBSET | TWL5031))) {
 955                 child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci",
 956                                 pdata->bci, sizeof(*pdata->bci), false,
 957                                 /* irq0 = CHG_PRES, irq1 = BCI */
 958                                 irq_base + BCI_PRES_INTR_OFFSET,
 959                                 irq_base + BCI_INTR_OFFSET);
 960                 if (IS_ERR(child))
 961                         return PTR_ERR(child);
 962         }
 963
 964         if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) {
 965                 child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power",
 966                                   pdata->power, sizeof(*pdata->power), false,
 967                                   0, 0);
 968                 if (IS_ERR(child))
 969                         return PTR_ERR(child);
 970         }
 971
 972         return 0;
 973 }
 974
 975 /*----------------------------------------------------------------------*/
 976
 977 /*
 978  * These three functions initialize the on-chip clock framework,
 979  * letting it generate the right frequencies for USB, MADC, and
 980  * other purposes.
 981  */
 982 static inline int __init protect_pm_master(void)
 983 {
 984         int e = 0;
 985
 986         e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
 987                              TWL4030_PM_MASTER_PROTECT_KEY);
 988         return e;
 989 }
 990
 991 static inline int __init unprotect_pm_master(void)
 992 {
 993         int e = 0;
 994
 995         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
 996                               TWL4030_PM_MASTER_PROTECT_KEY);
 997         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
 998                               TWL4030_PM_MASTER_PROTECT_KEY);
 999
1000         return e;
1001 }
1002
1003 static void clocks_init(struct device *dev,
1004                         struct twl4030_clock_init_data *clock)
1005 {
1006         int e = 0;
1007         struct clk *osc;
1008         u32 rate;
1009         u8 ctrl = HFCLK_FREQ_26_MHZ;
1010
1011         osc = clk_get(dev, "fck");
1012         if (IS_ERR(osc)) {
1013                 printk(KERN_WARNING "Skipping twl internal clock init and "
1014                                 "using bootloader value (unknown osc rate)\n");
1015                 return;
1016         }
1017
1018         rate = clk_get_rate(osc);
1019         clk_put(osc);
1020
1021         switch (rate) {
1022         case 19200000:
1023                 ctrl = HFCLK_FREQ_19p2_MHZ;
1024                 break;
1025         case 26000000:
1026                 ctrl = HFCLK_FREQ_26_MHZ;
1027                 break;
1028         case 38400000:
1029                 ctrl = HFCLK_FREQ_38p4_MHZ;
1030                 break;
1031         }
1032
1033         ctrl |= HIGH_PERF_SQ;
1034         if (clock && clock->ck32k_lowpwr_enable)
1035                 ctrl |= CK32K_LOWPWR_EN;
1036
1037         e |= unprotect_pm_master();
1038         /* effect->MADC+USB ck en */
1039         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1040         e |= protect_pm_master();
1041
1042         if (e < 0)
1043                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1044 }
1045
1046 /*----------------------------------------------------------------------*/
1047
1048
1049 static int twl_remove(struct i2c_client *client)
1050 {
1051         unsigned i, num_slaves;
1052         int status;
1053
1054         if (twl_class_is_4030())
1055                 status = twl4030_exit_irq();
1056         else
1057                 status = twl6030_exit_irq();
1058
1059         if (status < 0)
1060                 return status;
1061
1062         num_slaves = twl_get_num_slaves();
1063         for (i = 0; i < num_slaves; i++) {
1064                 struct twl_client       *twl = &twl_priv->twl_modules[i];
1065
1066                 if (twl->client && twl->client != client)
1067                         i2c_unregister_device(twl->client);
1068                 twl->client = NULL;
1069         }
1070         twl_priv->ready = false;
1071         return 0;
1072 }
1073
1074 static struct of_dev_auxdata twl_auxdata_lookup[] = {
1075         OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL),
1076         { /* sentinel */ },
1077 };
1078
1079 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1080 static int
1081 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1082 {
1083         struct twl4030_platform_data    *pdata = dev_get_platdata(&client->dev);
1084         struct device_node              *node = client->dev.of_node;
1085         struct platform_device          *pdev;
1086         struct regmap_config            *twl_regmap_config;
1087         int                             irq_base = 0;
1088         int                             status;
1089         unsigned                        i, num_slaves;
1090
1091         if (!node && !pdata) {
1092                 dev_err(&client->dev, "no platform data\n");
1093                 return -EINVAL;
1094         }
1095
1096         if (twl_priv) {
1097                 dev_dbg(&client->dev, "only one instance of %s allowed\n",
1098                         DRIVER_NAME);
1099                 return -EBUSY;
1100         }
1101
1102         pdev = platform_device_alloc(DRIVER_NAME, -1);
1103         if (!pdev) {
1104                 dev_err(&client->dev, "can't alloc pdev\n");
1105                 return -ENOMEM;
1106         }
1107
1108         status = platform_device_add(pdev);
1109         if (status) {
1110                 platform_device_put(pdev);
1111                 return status;
1112         }
1113
1114         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1115                 dev_dbg(&client->dev, "can't talk I2C?\n");
1116                 status = -EIO;
1117                 goto free;
1118         }
1119
1120         twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),
1121                                 GFP_KERNEL);
1122         if (!twl_priv) {
1123                 status = -ENOMEM;
1124                 goto free;
1125         }
1126
1127         if ((id->driver_data) & TWL6030_CLASS) {
1128                 twl_priv->twl_id = TWL6030_CLASS_ID;
1129                 twl_priv->twl_map = &twl6030_map[0];
1130                 /* The charger base address is different in twl6032 */
1131                 if ((id->driver_data) & TWL6032_SUBCLASS)
1132                         twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =
1133                                                         TWL6032_BASEADD_CHARGER;
1134                 twl_regmap_config = twl6030_regmap_config;
1135         } else {
1136                 twl_priv->twl_id = TWL4030_CLASS_ID;
1137                 twl_priv->twl_map = &twl4030_map[0];
1138                 twl_regmap_config = twl4030_regmap_config;
1139         }
1140
1141         num_slaves = twl_get_num_slaves();
1142         twl_priv->twl_modules = devm_kzalloc(&client->dev,
1143                                          sizeof(struct twl_client) * num_slaves,
1144                                          GFP_KERNEL);
1145         if (!twl_priv->twl_modules) {
1146                 status = -ENOMEM;
1147                 goto free;
1148         }
1149
1150         for (i = 0; i < num_slaves; i++) {
1151                 struct twl_client *twl = &twl_priv->twl_modules[i];
1152
1153                 if (i == 0) {
1154                         twl->client = client;
1155                 } else {
1156                         twl->client = i2c_new_dummy(client->adapter,
1157                                                     client->addr + i);
1158                         if (!twl->client) {
1159                                 dev_err(&client->dev,
1160                                         "can't attach client %d\n", i);
1161                                 status = -ENOMEM;
1162                                 goto fail;
1163                         }
1164                 }
1165
1166                 twl->regmap = devm_regmap_init_i2c(twl->client,
1167                                                    &twl_regmap_config[i]);
1168                 if (IS_ERR(twl->regmap)) {
1169                         status = PTR_ERR(twl->regmap);
1170                         dev_err(&client->dev,
1171                                 "Failed to allocate regmap %d, err: %d\n", i,
1172                                 status);
1173                         goto fail;
1174                 }
1175         }
1176
1177         twl_priv->ready = true;
1178
1179         /* setup clock framework */
1180         clocks_init(&pdev->dev, pdata ? pdata->clock : NULL);
1181
1182         /* read TWL IDCODE Register */
1183         if (twl_class_is_4030()) {
1184                 status = twl_read_idcode_register();
1185                 WARN(status < 0, "Error: reading twl_idcode register value\n");
1186         }
1187
1188         /* Maybe init the T2 Interrupt subsystem */
1189         if (client->irq) {
1190                 if (twl_class_is_4030()) {
1191                         twl4030_init_chip_irq(id->name);
1192                         irq_base = twl4030_init_irq(&client->dev, client->irq);
1193                 } else {
1194                         irq_base = twl6030_init_irq(&client->dev, client->irq);
1195                 }
1196
1197                 if (irq_base < 0) {
1198                         status = irq_base;
1199                         goto fail;
1200                 }
1201         }
1202
1203         /*
1204          * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1205          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1206          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1207          */
1208         if (twl_class_is_4030()) {
1209                 u8 temp;
1210
1211                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1212                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1213                         I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1214                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1215         }
1216
1217         if (node) {
1218                 if (pdata)
1219                         twl_auxdata_lookup[0].platform_data = pdata->gpio;
1220                 status = of_platform_populate(node, NULL, twl_auxdata_lookup,
1221                                               &client->dev);
1222         } else {
1223                 status = add_children(pdata, irq_base, id->driver_data);
1224         }
1225
1226 fail:
1227         if (status < 0)
1228                 twl_remove(client);
1229 free:
1230         if (status < 0)
1231                 platform_device_unregister(pdev);
1232
1233         return status;
1234 }
1235
1236 static const struct i2c_device_id twl_ids[] = {
1237         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1238         { "twl5030", 0 },               /* T2 updated */
1239         { "twl5031", TWL5031 },         /* TWL5030 updated */
1240         { "tps65950", 0 },              /* catalog version of twl5030 */
1241         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1242         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1243         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1244                                            and vibrator. Charger in USB module*/
1245         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1246         { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */
1247         { /* end of list */ },
1248 };
1249 MODULE_DEVICE_TABLE(i2c, twl_ids);
1250
1251 /* One Client Driver , 4 Clients */
1252 static struct i2c_driver twl_driver = {
1253         .driver.name    = DRIVER_NAME,
1254         .id_table       = twl_ids,
1255         .probe          = twl_probe,
1256         .remove         = twl_remove,
1257 };
1258
1259 module_i2c_driver(twl_driver);
1260
1261 MODULE_AUTHOR("Texas Instruments, Inc.");
1262 MODULE_DESCRIPTION("I2C Core interface for TWL");
1263 MODULE_LICENSE("GPL");