1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
   4 * and audio CODEC devices
   5 *
   6 * Copyright (C) 2005-2006 Texas Instruments, Inc.
   7 *
   8 * Modifications to defer interrupt handling to a kernel thread:
   9 * Copyright (C) 2006 MontaVista Software, Inc.
  10 *
  11 * Based on tlv320aic23.c:
  12 * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
  13 *
  14 * Code cleanup and modifications to IRQ handler.
  15 * by syed khasim <x0khasim@ti.com>
  16 */
  17
  18#include <linux/init.h>
  19#include <linux/mutex.h>
  20#include <linux/platform_device.h>
  21#include <linux/regmap.h>
  22#include <linux/clk.h>
  23#include <linux/err.h>
  24#include <linux/device.h>
  25#include <linux/of.h>
  26#include <linux/of_irq.h>
  27#include <linux/of_platform.h>
  28#include <linux/irq.h>
  29#include <linux/irqdomain.h>
  30
  31#include <linux/regulator/machine.h>
  32
  33#include <linux/i2c.h>
  34#include <linux/mfd/twl.h>
  35
  36/* Register descriptions for audio */
  37#include <linux/mfd/twl4030-audio.h>
  38
  39#include "twl-core.h"
  40
  41/*
  42 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
  43 * Management and System Companion Device" chips originally designed for
  44 * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
  45 * often at around 3 Mbit/sec, including for interrupt handling.
  46 *
  47 * This driver core provides genirq support for the interrupts emitted,
  48 * by the various modules, and exports register access primitives.
  49 *
  50 * FIXME this driver currently requires use of the first interrupt line
  51 * (and associated registers).
  52 */
  53
  54#define DRIVER_NAME			"twl"
  55
  56/* Triton Core internal information (BEGIN) */
  57
  58/* Base Address defns for twl4030_map[] */
  59
  60/* subchip/slave 0 - USB ID */
  61#define TWL4030_BASEADD_USB		0x0000
  62
  63/* subchip/slave 1 - AUD ID */
  64#define TWL4030_BASEADD_AUDIO_VOICE	0x0000
  65#define TWL4030_BASEADD_GPIO		0x0098
  66#define TWL4030_BASEADD_INTBR		0x0085
  67#define TWL4030_BASEADD_PIH		0x0080
  68#define TWL4030_BASEADD_TEST		0x004C
  69
  70/* subchip/slave 2 - AUX ID */
  71#define TWL4030_BASEADD_INTERRUPTS	0x00B9
  72#define TWL4030_BASEADD_LED		0x00EE
  73#define TWL4030_BASEADD_MADC		0x0000
  74#define TWL4030_BASEADD_MAIN_CHARGE	0x0074
  75#define TWL4030_BASEADD_PRECHARGE	0x00AA
  76#define TWL4030_BASEADD_PWM		0x00F8
  77#define TWL4030_BASEADD_KEYPAD		0x00D2
  78
  79#define TWL5031_BASEADD_ACCESSORY	0x0074 /* Replaces Main Charge */
  80#define TWL5031_BASEADD_INTERRUPTS	0x00B9 /* Different than TWL4030's
  81						  one */
  82
  83/* subchip/slave 3 - POWER ID */
  84#define TWL4030_BASEADD_BACKUP		0x0014
  85#define TWL4030_BASEADD_INT		0x002E
  86#define TWL4030_BASEADD_PM_MASTER	0x0036
  87
  88#define TWL4030_BASEADD_PM_RECEIVER	0x005B
  89#define TWL4030_DCDC_GLOBAL_CFG		0x06
  90#define SMARTREFLEX_ENABLE		BIT(3)
  91
  92#define TWL4030_BASEADD_RTC		0x001C
  93#define TWL4030_BASEADD_SECURED_REG	0x0000
  94
  95/* Triton Core internal information (END) */
  96
  97
  98/* subchip/slave 0 0x48 - POWER */
  99#define TWL6030_BASEADD_RTC		0x0000
 100#define TWL6030_BASEADD_SECURED_REG	0x0017
 101#define TWL6030_BASEADD_PM_MASTER	0x001F
 102#define TWL6030_BASEADD_PM_SLAVE_MISC	0x0030 /* PM_RECEIVER */
 103#define TWL6030_BASEADD_PM_MISC		0x00E2
 104#define TWL6030_BASEADD_PM_PUPD		0x00F0
 105
 106/* subchip/slave 1 0x49 - FEATURE */
 107#define TWL6030_BASEADD_USB		0x0000
 108#define TWL6030_BASEADD_GPADC_CTRL	0x002E
 109#define TWL6030_BASEADD_AUX		0x0090
 110#define TWL6030_BASEADD_PWM		0x00BA
 111#define TWL6030_BASEADD_GASGAUGE	0x00C0
 112#define TWL6030_BASEADD_PIH		0x00D0
 113#define TWL6030_BASEADD_CHARGER		0x00E0
 114#define TWL6032_BASEADD_CHARGER		0x00DA
 115#define TWL6030_BASEADD_LED		0x00F4
 116
 117/* subchip/slave 2 0x4A - DFT */
 118#define TWL6030_BASEADD_DIEID		0x00C0
 119
 120/* subchip/slave 3 0x4B - AUDIO */
 121#define TWL6030_BASEADD_AUDIO		0x0000
 122#define TWL6030_BASEADD_RSV		0x0000
 123#define TWL6030_BASEADD_ZERO		0x0000
 124
 125/* Few power values */
 126#define R_CFG_BOOT			0x05
 127
 128/* some fields in R_CFG_BOOT */
 129#define HFCLK_FREQ_19p2_MHZ		(1 << 0)
 130#define HFCLK_FREQ_26_MHZ		(2 << 0)
 131#define HFCLK_FREQ_38p4_MHZ		(3 << 0)
 132#define HIGH_PERF_SQ			(1 << 3)
 133#define CK32K_LOWPWR_EN			(1 << 7)
 134
 135/*----------------------------------------------------------------------*/
 136
 137/* Structure for each TWL4030/TWL6030 Slave */
 138struct twl_client {
 139	struct i2c_client *client;
 140	struct regmap *regmap;
 141};
 142
 143/* mapping the module id to slave id and base address */
 144struct twl_mapping {
 145	unsigned char sid;	/* Slave ID */
 146	unsigned char base;	/* base address */
 147};
 148
 149struct twl_private {
 150	bool ready; /* The core driver is ready to be used */
 151	u32 twl_idcode; /* TWL IDCODE Register value */
 152	unsigned int twl_id;
 153
 154	struct twl_mapping *twl_map;
 155	struct twl_client *twl_modules;
 156};
 157
 158static struct twl_private *twl_priv;
 159
 160static struct twl_mapping twl4030_map[] = {
 161	/*
 162	 * NOTE:  don't change this table without updating the
 163	 * <linux/mfd/twl.h> defines for TWL4030_MODULE_*
 164	 * so they continue to match the order in this table.
 165	 */
 166
 167	/* Common IPs */
 168	{ 0, TWL4030_BASEADD_USB },
 169	{ 1, TWL4030_BASEADD_PIH },
 170	{ 2, TWL4030_BASEADD_MAIN_CHARGE },
 171	{ 3, TWL4030_BASEADD_PM_MASTER },
 172	{ 3, TWL4030_BASEADD_PM_RECEIVER },
 173
 174	{ 3, TWL4030_BASEADD_RTC },
 175	{ 2, TWL4030_BASEADD_PWM },
 176	{ 2, TWL4030_BASEADD_LED },
 177	{ 3, TWL4030_BASEADD_SECURED_REG },
 178
 179	/* TWL4030 specific IPs */
 180	{ 1, TWL4030_BASEADD_AUDIO_VOICE },
 181	{ 1, TWL4030_BASEADD_GPIO },
 182	{ 1, TWL4030_BASEADD_INTBR },
 183	{ 1, TWL4030_BASEADD_TEST },
 184	{ 2, TWL4030_BASEADD_KEYPAD },
 185
 186	{ 2, TWL4030_BASEADD_MADC },
 187	{ 2, TWL4030_BASEADD_INTERRUPTS },
 188	{ 2, TWL4030_BASEADD_PRECHARGE },
 189	{ 3, TWL4030_BASEADD_BACKUP },
 190	{ 3, TWL4030_BASEADD_INT },
 191
 192	{ 2, TWL5031_BASEADD_ACCESSORY },
 193	{ 2, TWL5031_BASEADD_INTERRUPTS },
 194};
 195
 196static const struct reg_default twl4030_49_defaults[] = {
 197	/* Audio Registers */
 198	{ 0x01, 0x00}, /* CODEC_MODE	*/
 199	{ 0x02, 0x00}, /* OPTION	*/
 200	/* 0x03  Unused	*/
 201	{ 0x04, 0x00}, /* MICBIAS_CTL	*/
 202	{ 0x05, 0x00}, /* ANAMICL	*/
 203	{ 0x06, 0x00}, /* ANAMICR	*/
 204	{ 0x07, 0x00}, /* AVADC_CTL	*/
 205	{ 0x08, 0x00}, /* ADCMICSEL	*/
 206	{ 0x09, 0x00}, /* DIGMIXING	*/
 207	{ 0x0a, 0x0f}, /* ATXL1PGA	*/
 208	{ 0x0b, 0x0f}, /* ATXR1PGA	*/
 209	{ 0x0c, 0x0f}, /* AVTXL2PGA	*/
 210	{ 0x0d, 0x0f}, /* AVTXR2PGA	*/
 211	{ 0x0e, 0x00}, /* AUDIO_IF	*/
 212	{ 0x0f, 0x00}, /* VOICE_IF	*/
 213	{ 0x10, 0x3f}, /* ARXR1PGA	*/
 214	{ 0x11, 0x3f}, /* ARXL1PGA	*/
 215	{ 0x12, 0x3f}, /* ARXR2PGA	*/
 216	{ 0x13, 0x3f}, /* ARXL2PGA	*/
 217	{ 0x14, 0x25}, /* VRXPGA	*/
 218	{ 0x15, 0x00}, /* VSTPGA	*/
 219	{ 0x16, 0x00}, /* VRX2ARXPGA	*/
 220	{ 0x17, 0x00}, /* AVDAC_CTL	*/
 221	{ 0x18, 0x00}, /* ARX2VTXPGA	*/
 222	{ 0x19, 0x32}, /* ARXL1_APGA_CTL*/
 223	{ 0x1a, 0x32}, /* ARXR1_APGA_CTL*/
 224	{ 0x1b, 0x32}, /* ARXL2_APGA_CTL*/
 225	{ 0x1c, 0x32}, /* ARXR2_APGA_CTL*/
 226	{ 0x1d, 0x00}, /* ATX2ARXPGA	*/
 227	{ 0x1e, 0x00}, /* BT_IF		*/
 228	{ 0x1f, 0x55}, /* BTPGA		*/
 229	{ 0x20, 0x00}, /* BTSTPGA	*/
 230	{ 0x21, 0x00}, /* EAR_CTL	*/
 231	{ 0x22, 0x00}, /* HS_SEL	*/
 232	{ 0x23, 0x00}, /* HS_GAIN_SET	*/
 233	{ 0x24, 0x00}, /* HS_POPN_SET	*/
 234	{ 0x25, 0x00}, /* PREDL_CTL	*/
 235	{ 0x26, 0x00}, /* PREDR_CTL	*/
 236	{ 0x27, 0x00}, /* PRECKL_CTL	*/
 237	{ 0x28, 0x00}, /* PRECKR_CTL	*/
 238	{ 0x29, 0x00}, /* HFL_CTL	*/
 239	{ 0x2a, 0x00}, /* HFR_CTL	*/
 240	{ 0x2b, 0x05}, /* ALC_CTL	*/
 241	{ 0x2c, 0x00}, /* ALC_SET1	*/
 242	{ 0x2d, 0x00}, /* ALC_SET2	*/
 243	{ 0x2e, 0x00}, /* BOOST_CTL	*/
 244	{ 0x2f, 0x00}, /* SOFTVOL_CTL	*/
 245	{ 0x30, 0x13}, /* DTMF_FREQSEL	*/
 246	{ 0x31, 0x00}, /* DTMF_TONEXT1H	*/
 247	{ 0x32, 0x00}, /* DTMF_TONEXT1L	*/
 248	{ 0x33, 0x00}, /* DTMF_TONEXT2H	*/
 249	{ 0x34, 0x00}, /* DTMF_TONEXT2L	*/
 250	{ 0x35, 0x79}, /* DTMF_TONOFF	*/
 251	{ 0x36, 0x11}, /* DTMF_WANONOFF	*/
 252	{ 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */
 253	{ 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */
 254	{ 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */
 255	{ 0x3a, 0x06}, /* APLL_CTL */
 256	{ 0x3b, 0x00}, /* DTMF_CTL */
 257	{ 0x3c, 0x44}, /* DTMF_PGA_CTL2	(0x3C) */
 258	{ 0x3d, 0x69}, /* DTMF_PGA_CTL1	(0x3D) */
 259	{ 0x3e, 0x00}, /* MISC_SET_1 */
 260	{ 0x3f, 0x00}, /* PCMBTMUX */
 261	/* 0x40 - 0x42  Unused */
 262	{ 0x43, 0x00}, /* RX_PATH_SEL */
 263	{ 0x44, 0x32}, /* VDL_APGA_CTL */
 264	{ 0x45, 0x00}, /* VIBRA_CTL */
 265	{ 0x46, 0x00}, /* VIBRA_SET */
 266	{ 0x47, 0x00}, /* VIBRA_PWM_SET	*/
 267	{ 0x48, 0x00}, /* ANAMIC_GAIN	*/
 268	{ 0x49, 0x00}, /* MISC_SET_2	*/
 269	/* End of Audio Registers */
 270};
 271
 272static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg)
 273{
 274	switch (reg) {
 275	case 0x00:
 276	case 0x03:
 277	case 0x40:
 278	case 0x41:
 279	case 0x42:
 280		return false;
 281	default:
 282		return true;
 283	}
 284}
 285
 286static const struct regmap_range twl4030_49_volatile_ranges[] = {
 287	regmap_reg_range(TWL4030_BASEADD_TEST, 0xff),
 288};
 289
 290static const struct regmap_access_table twl4030_49_volatile_table = {
 291	.yes_ranges = twl4030_49_volatile_ranges,
 292	.n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges),
 293};
 294
 295static const struct regmap_config twl4030_regmap_config[4] = {
 296	{
 297		/* Address 0x48 */
 298		.reg_bits = 8,
 299		.val_bits = 8,
 300		.max_register = 0xff,
 301	},
 302	{
 303		/* Address 0x49 */
 304		.reg_bits = 8,
 305		.val_bits = 8,
 306		.max_register = 0xff,
 307
 308		.readable_reg = twl4030_49_nop_reg,
 309		.writeable_reg = twl4030_49_nop_reg,
 310
 311		.volatile_table = &twl4030_49_volatile_table,
 312
 313		.reg_defaults = twl4030_49_defaults,
 314		.num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults),
 315		.cache_type = REGCACHE_RBTREE,
 316	},
 317	{
 318		/* Address 0x4a */
 319		.reg_bits = 8,
 320		.val_bits = 8,
 321		.max_register = 0xff,
 322	},
 323	{
 324		/* Address 0x4b */
 325		.reg_bits = 8,
 326		.val_bits = 8,
 327		.max_register = 0xff,
 328	},
 329};
 330
 331static struct twl_mapping twl6030_map[] = {
 332	/*
 333	 * NOTE:  don't change this table without updating the
 334	 * <linux/mfd/twl.h> defines for TWL4030_MODULE_*
 335	 * so they continue to match the order in this table.
 336	 */
 337
 338	/* Common IPs */
 339	{ 1, TWL6030_BASEADD_USB },
 340	{ 1, TWL6030_BASEADD_PIH },
 341	{ 1, TWL6030_BASEADD_CHARGER },
 342	{ 0, TWL6030_BASEADD_PM_MASTER },
 343	{ 0, TWL6030_BASEADD_PM_SLAVE_MISC },
 344
 345	{ 0, TWL6030_BASEADD_RTC },
 346	{ 1, TWL6030_BASEADD_PWM },
 347	{ 1, TWL6030_BASEADD_LED },
 348	{ 0, TWL6030_BASEADD_SECURED_REG },
 349
 350	/* TWL6030 specific IPs */
 351	{ 0, TWL6030_BASEADD_ZERO },
 352	{ 1, TWL6030_BASEADD_ZERO },
 353	{ 2, TWL6030_BASEADD_ZERO },
 354	{ 1, TWL6030_BASEADD_GPADC_CTRL },
 355	{ 1, TWL6030_BASEADD_GASGAUGE },
 356};
 357
 358static const struct regmap_config twl6030_regmap_config[3] = {
 359	{
 360		/* Address 0x48 */
 361		.reg_bits = 8,
 362		.val_bits = 8,
 363		.max_register = 0xff,
 364	},
 365	{
 366		/* Address 0x49 */
 367		.reg_bits = 8,
 368		.val_bits = 8,
 369		.max_register = 0xff,
 370	},
 371	{
 372		/* Address 0x4a */
 373		.reg_bits = 8,
 374		.val_bits = 8,
 375		.max_register = 0xff,
 376	},
 377};
 378
 379/*----------------------------------------------------------------------*/
 380
 381static inline int twl_get_num_slaves(void)
 382{
 383	if (twl_class_is_4030())
 384		return 4; /* TWL4030 class have four slave address */
 385	else
 386		return 3; /* TWL6030 class have three slave address */
 387}
 388
 389static inline int twl_get_last_module(void)
 390{
 391	if (twl_class_is_4030())
 392		return TWL4030_MODULE_LAST;
 393	else
 394		return TWL6030_MODULE_LAST;
 395}
 396
 397/* Exported Functions */
 398
 399unsigned int twl_rev(void)
 400{
 401	return twl_priv ? twl_priv->twl_id : 0;
 402}
 403EXPORT_SYMBOL(twl_rev);
 404
 405/**
 406 * twl_get_regmap - Get the regmap associated with the given module
 407 * @mod_no: module number
 408 *
 409 * Returns the regmap pointer or NULL in case of failure.
 410 */
 411static struct regmap *twl_get_regmap(u8 mod_no)
 412{
 413	int sid;
 414	struct twl_client *twl;
 415
 416	if (unlikely(!twl_priv || !twl_priv->ready)) {
 417		pr_err("%s: not initialized\n", DRIVER_NAME);
 418		return NULL;
 419	}
 420	if (unlikely(mod_no >= twl_get_last_module())) {
 421		pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 422		return NULL;
 423	}
 424
 425	sid = twl_priv->twl_map[mod_no].sid;
 426	twl = &twl_priv->twl_modules[sid];
 427
 428	return twl->regmap;
 429}
 430
 431/**
 432 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
 433 * @mod_no: module number
 434 * @value: an array of num_bytes+1 containing data to write
 435 * @reg: register address (just offset will do)
 436 * @num_bytes: number of bytes to transfer
 437 *
 438 * Returns 0 on success or else a negative error code.
 439 */
 440int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 441{
 442	struct regmap *regmap = twl_get_regmap(mod_no);
 443	int ret;
 444
 445	if (!regmap)
 446		return -EPERM;
 447
 448	ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg,
 449				value, num_bytes);
 450
 451	if (ret)
 452		pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
 453		       DRIVER_NAME, mod_no, reg, num_bytes);
 454
 455	return ret;
 456}
 457EXPORT_SYMBOL(twl_i2c_write);
 458
 459/**
 460 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
 461 * @mod_no: module number
 462 * @value: an array of num_bytes containing data to be read
 463 * @reg: register address (just offset will do)
 464 * @num_bytes: number of bytes to transfer
 465 *
 466 * Returns 0 on success or else a negative error code.
 467 */
 468int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
 469{
 470	struct regmap *regmap = twl_get_regmap(mod_no);
 471	int ret;
 472
 473	if (!regmap)
 474		return -EPERM;
 475
 476	ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg,
 477			       value, num_bytes);
 478
 479	if (ret)
 480		pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
 481		       DRIVER_NAME, mod_no, reg, num_bytes);
 482
 483	return ret;
 484}
 485EXPORT_SYMBOL(twl_i2c_read);
 486
 487/**
 488 * twl_regcache_bypass - Configure the regcache bypass for the regmap associated
 489 *			 with the module
 490 * @mod_no: module number
 491 * @enable: Regcache bypass state
 492 *
 493 * Returns 0 else failure.
 494 */
 495int twl_set_regcache_bypass(u8 mod_no, bool enable)
 496{
 497	struct regmap *regmap = twl_get_regmap(mod_no);
 498
 499	if (!regmap)
 500		return -EPERM;
 501
 502	regcache_cache_bypass(regmap, enable);
 503
 504	return 0;
 505}
 506EXPORT_SYMBOL(twl_set_regcache_bypass);
 507
 508/*----------------------------------------------------------------------*/
 509
 510/**
 511 * twl_read_idcode_register - API to read the IDCODE register.
 512 *
 513 * Unlocks the IDCODE register and read the 32 bit value.
 514 */
 515static int twl_read_idcode_register(void)
 516{
 517	int err;
 518
 519	err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
 520						REG_UNLOCK_TEST_REG);
 521	if (err) {
 522		pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
 523		goto fail;
 524	}
 525
 526	err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),
 527						REG_IDCODE_7_0, 4);
 528	if (err) {
 529		pr_err("TWL4030: unable to read IDCODE -%d\n", err);
 530		goto fail;
 531	}
 532
 533	err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
 534	if (err)
 535		pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
 536fail:
 537	return err;
 538}
 539
 540/**
 541 * twl_get_type - API to get TWL Si type.
 542 *
 543 * Api to get the TWL Si type from IDCODE value.
 544 */
 545int twl_get_type(void)
 546{
 547	return TWL_SIL_TYPE(twl_priv->twl_idcode);
 548}
 549EXPORT_SYMBOL_GPL(twl_get_type);
 550
 551/**
 552 * twl_get_version - API to get TWL Si version.
 553 *
 554 * Api to get the TWL Si version from IDCODE value.
 555 */
 556int twl_get_version(void)
 557{
 558	return TWL_SIL_REV(twl_priv->twl_idcode);
 559}
 560EXPORT_SYMBOL_GPL(twl_get_version);
 561
 562/**
 563 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
 564 *
 565 * Api to get the TWL HFCLK rate based on BOOT_CFG register.
 566 */
 567int twl_get_hfclk_rate(void)
 568{
 569	u8 ctrl;
 570	int rate;
 571
 572	twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
 573
 574	switch (ctrl & 0x3) {
 575	case HFCLK_FREQ_19p2_MHZ:
 576		rate = 19200000;
 577		break;
 578	case HFCLK_FREQ_26_MHZ:
 579		rate = 26000000;
 580		break;
 581	case HFCLK_FREQ_38p4_MHZ:
 582		rate = 38400000;
 583		break;
 584	default:
 585		pr_err("TWL4030: HFCLK is not configured\n");
 586		rate = -EINVAL;
 587		break;
 588	}
 589
 590	return rate;
 591}
 592EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
 593
 594static struct device *
 595add_numbered_child(unsigned mod_no, const char *name, int num,
 596		void *pdata, unsigned pdata_len,
 597		bool can_wakeup, int irq0, int irq1)
 598{
 599	struct platform_device	*pdev;
 600	struct twl_client	*twl;
 601	int			status, sid;
 602
 603	if (unlikely(mod_no >= twl_get_last_module())) {
 604		pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
 605		return ERR_PTR(-EPERM);
 606	}
 607	sid = twl_priv->twl_map[mod_no].sid;
 608	twl = &twl_priv->twl_modules[sid];
 609
 610	pdev = platform_device_alloc(name, num);
 611	if (!pdev)
 612		return ERR_PTR(-ENOMEM);
 613
 614	pdev->dev.parent = &twl->client->dev;
 615
 616	if (pdata) {
 617		status = platform_device_add_data(pdev, pdata, pdata_len);
 618		if (status < 0) {
 619			dev_dbg(&pdev->dev, "can't add platform_data\n");
 620			goto put_device;
 621		}
 622	}
 623
 624	if (irq0) {
 625		struct resource r[2] = {
 626			{ .start = irq0, .flags = IORESOURCE_IRQ, },
 627			{ .start = irq1, .flags = IORESOURCE_IRQ, },
 628		};
 629
 630		status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
 631		if (status < 0) {
 632			dev_dbg(&pdev->dev, "can't add irqs\n");
 633			goto put_device;
 634		}
 635	}
 636
 637	status = platform_device_add(pdev);
 638	if (status)
 639		goto put_device;
 640
 641	device_init_wakeup(&pdev->dev, can_wakeup);
 642
 643	return &pdev->dev;
 644
 645put_device:
 646	platform_device_put(pdev);
 647	dev_err(&twl->client->dev, "failed to add device %s\n", name);
 648	return ERR_PTR(status);
 649}
 650
 651static inline struct device *add_child(unsigned mod_no, const char *name,
 652		void *pdata, unsigned pdata_len,
 653		bool can_wakeup, int irq0, int irq1)
 654{
 655	return add_numbered_child(mod_no, name, -1, pdata, pdata_len,
 656		can_wakeup, irq0, irq1);
 657}
 658
 659static struct device *
 660add_regulator_linked(int num, struct regulator_init_data *pdata,
 661		struct regulator_consumer_supply *consumers,
 662		unsigned num_consumers, unsigned long features)
 663{
 664	struct twl_regulator_driver_data drv_data;
 665
 666	/* regulator framework demands init_data ... */
 667	if (!pdata)
 668		return NULL;
 669
 670	if (consumers) {
 671		pdata->consumer_supplies = consumers;
 672		pdata->num_consumer_supplies = num_consumers;
 673	}
 674
 675	if (pdata->driver_data) {
 676		/* If we have existing drv_data, just add the flags */
 677		struct twl_regulator_driver_data *tmp;
 678		tmp = pdata->driver_data;
 679		tmp->features |= features;
 680	} else {
 681		/* add new driver data struct, used only during init */
 682		drv_data.features = features;
 683		drv_data.set_voltage = NULL;
 684		drv_data.get_voltage = NULL;
 685		drv_data.data = NULL;
 686		pdata->driver_data = &drv_data;
 687	}
 688
 689	/* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
 690	return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num,
 691		pdata, sizeof(*pdata), false, 0, 0);
 692}
 693
 694static struct device *
 695add_regulator(int num, struct regulator_init_data *pdata,
 696		unsigned long features)
 697{
 698	return add_regulator_linked(num, pdata, NULL, 0, features);
 699}
 700
 701/*
 702 * NOTE:  We know the first 8 IRQs after pdata->base_irq are
 703 * for the PIH, and the next are for the PWR_INT SIH, since
 704 * that's how twl_init_irq() sets things up.
 705 */
 706
 707static int
 708add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
 709		unsigned long features)
 710{
 711	struct device	*child;
 712
 713	if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
 714		child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio",
 715				pdata->gpio, sizeof(*pdata->gpio),
 716				false, irq_base + GPIO_INTR_OFFSET, 0);
 717		if (IS_ERR(child))
 718			return PTR_ERR(child);
 719	}
 720
 721	if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
 722		child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad",
 723				pdata->keypad, sizeof(*pdata->keypad),
 724				true, irq_base + KEYPAD_INTR_OFFSET, 0);
 725		if (IS_ERR(child))
 726			return PTR_ERR(child);
 727	}
 728
 729	if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc &&
 730	    twl_class_is_4030()) {
 731		child = add_child(TWL4030_MODULE_MADC, "twl4030_madc",
 732				pdata->madc, sizeof(*pdata->madc),
 733				true, irq_base + MADC_INTR_OFFSET, 0);
 734		if (IS_ERR(child))
 735			return PTR_ERR(child);
 736	}
 737
 738	if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
 739		/*
 740		 * REVISIT platform_data here currently might expose the
 741		 * "msecure" line ... but for now we just expect board
 742		 * setup to tell the chip "it's always ok to SET_TIME".
 743		 * Eventually, Linux might become more aware of such
 744		 * HW security concerns, and "least privilege".
 745		 */
 746		child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0,
 747				true, irq_base + RTC_INTR_OFFSET, 0);
 748		if (IS_ERR(child))
 749			return PTR_ERR(child);
 750	}
 751
 752	if (IS_ENABLED(CONFIG_PWM_TWL)) {
 753		child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0,
 754				  false, 0, 0);
 755		if (IS_ERR(child))
 756			return PTR_ERR(child);
 757	}
 758
 759	if (IS_ENABLED(CONFIG_PWM_TWL_LED)) {
 760		child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0,
 761				  false, 0, 0);
 762		if (IS_ERR(child))
 763			return PTR_ERR(child);
 764	}
 765
 766	if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
 767	    twl_class_is_4030()) {
 768
 769		static struct regulator_consumer_supply usb1v5 = {
 770			.supply =	"usb1v5",
 771		};
 772		static struct regulator_consumer_supply usb1v8 = {
 773			.supply =	"usb1v8",
 774		};
 775		static struct regulator_consumer_supply usb3v1 = {
 776			.supply =	"usb3v1",
 777		};
 778
 779	/* First add the regulators so that they can be used by transceiver */
 780		if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
 781			/* this is a template that gets copied */
 782			struct regulator_init_data usb_fixed = {
 783				.constraints.valid_modes_mask =
 784					REGULATOR_MODE_NORMAL
 785					| REGULATOR_MODE_STANDBY,
 786				.constraints.valid_ops_mask =
 787					REGULATOR_CHANGE_MODE
 788					| REGULATOR_CHANGE_STATUS,
 789			};
 790
 791			child = add_regulator_linked(TWL4030_REG_VUSB1V5,
 792						      &usb_fixed, &usb1v5, 1,
 793						      features);
 794			if (IS_ERR(child))
 795				return PTR_ERR(child);
 796
 797			child = add_regulator_linked(TWL4030_REG_VUSB1V8,
 798						      &usb_fixed, &usb1v8, 1,
 799						      features);
 800			if (IS_ERR(child))
 801				return PTR_ERR(child);
 802
 803			child = add_regulator_linked(TWL4030_REG_VUSB3V1,
 804						      &usb_fixed, &usb3v1, 1,
 805						      features);
 806			if (IS_ERR(child))
 807				return PTR_ERR(child);
 808
 809		}
 810
 811		child = add_child(TWL_MODULE_USB, "twl4030_usb",
 812				pdata->usb, sizeof(*pdata->usb), true,
 813				/* irq0 = USB_PRES, irq1 = USB */
 814				irq_base + USB_PRES_INTR_OFFSET,
 815				irq_base + USB_INTR_OFFSET);
 816
 817		if (IS_ERR(child))
 818			return PTR_ERR(child);
 819
 820		/* we need to connect regulators to this transceiver */
 821		if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
 822			usb1v5.dev_name = dev_name(child);
 823			usb1v8.dev_name = dev_name(child);
 824			usb3v1.dev_name = dev_name(child);
 825		}
 826	}
 827
 828	if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
 829		child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL,
 830				  0, false, 0, 0);
 831		if (IS_ERR(child))
 832			return PTR_ERR(child);
 833	}
 834
 835	if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
 836		child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton",
 837				  NULL, 0, true, irq_base + 8 + 0, 0);
 838		if (IS_ERR(child))
 839			return PTR_ERR(child);
 840	}
 841
 842	if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
 843	    twl_class_is_4030()) {
 844		child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio",
 845				pdata->audio, sizeof(*pdata->audio),
 846				false, 0, 0);
 847		if (IS_ERR(child))
 848			return PTR_ERR(child);
 849	}
 850
 851	/* twl4030 regulators */
 852	if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
 853		child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
 854					features);
 855		if (IS_ERR(child))
 856			return PTR_ERR(child);
 857
 858		child = add_regulator(TWL4030_REG_VIO, pdata->vio,
 859					features);
 860		if (IS_ERR(child))
 861			return PTR_ERR(child);
 862
 863		child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
 864					features);
 865		if (IS_ERR(child))
 866			return PTR_ERR(child);
 867
 868		child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
 869					features);
 870		if (IS_ERR(child))
 871			return PTR_ERR(child);
 872
 873		child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
 874					features);
 875		if (IS_ERR(child))
 876			return PTR_ERR(child);
 877
 878		child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
 879					features);
 880		if (IS_ERR(child))
 881			return PTR_ERR(child);
 882
 883		child = add_regulator((features & TWL4030_VAUX2)
 884					? TWL4030_REG_VAUX2_4030
 885					: TWL4030_REG_VAUX2,
 886				pdata->vaux2, features);
 887		if (IS_ERR(child))
 888			return PTR_ERR(child);
 889
 890		child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
 891					features);
 892		if (IS_ERR(child))
 893			return PTR_ERR(child);
 894
 895		child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
 896					features);
 897		if (IS_ERR(child))
 898			return PTR_ERR(child);
 899
 900		child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
 901					features);
 902		if (IS_ERR(child))
 903			return PTR_ERR(child);
 904	}
 905
 906	/* maybe add LDOs that are omitted on cost-reduced parts */
 907	if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
 908	  && twl_class_is_4030()) {
 909		child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
 910					features);
 911		if (IS_ERR(child))
 912			return PTR_ERR(child);
 913
 914		child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
 915					features);
 916		if (IS_ERR(child))
 917			return PTR_ERR(child);
 918
 919		child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
 920					features);
 921		if (IS_ERR(child))
 922			return PTR_ERR(child);
 923
 924		child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
 925					features);
 926		if (IS_ERR(child))
 927			return PTR_ERR(child);
 928
 929		child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
 930					features);
 931		if (IS_ERR(child))
 932			return PTR_ERR(child);
 933
 934		child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
 935					features);
 936		if (IS_ERR(child))
 937			return PTR_ERR(child);
 938	}
 939
 940	if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
 941			!(features & (TPS_SUBSET | TWL5031))) {
 942		child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci",
 943				pdata->bci, sizeof(*pdata->bci), false,
 944				/* irq0 = CHG_PRES, irq1 = BCI */
 945				irq_base + BCI_PRES_INTR_OFFSET,
 946				irq_base + BCI_INTR_OFFSET);
 947		if (IS_ERR(child))
 948			return PTR_ERR(child);
 949	}
 950
 951	if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) {
 952		child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power",
 953				  pdata->power, sizeof(*pdata->power), false,
 954				  0, 0);
 955		if (IS_ERR(child))
 956			return PTR_ERR(child);
 957	}
 958
 959	return 0;
 960}
 961
 962/*----------------------------------------------------------------------*/
 963
 964/*
 965 * These three functions initialize the on-chip clock framework,
 966 * letting it generate the right frequencies for USB, MADC, and
 967 * other purposes.
 968 */
 969static inline int protect_pm_master(void)
 970{
 971	int e = 0;
 972
 973	e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
 974			     TWL4030_PM_MASTER_PROTECT_KEY);
 975	return e;
 976}
 977
 978static inline int unprotect_pm_master(void)
 979{
 980	int e = 0;
 981
 982	e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
 983			      TWL4030_PM_MASTER_PROTECT_KEY);
 984	e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
 985			      TWL4030_PM_MASTER_PROTECT_KEY);
 986
 987	return e;
 988}
 989
 990static void clocks_init(struct device *dev,
 991			struct twl4030_clock_init_data *clock)
 992{
 993	int e = 0;
 994	struct clk *osc;
 995	u32 rate;
 996	u8 ctrl = HFCLK_FREQ_26_MHZ;
 997
 998	osc = clk_get(dev, "fck");
 999	if (IS_ERR(osc)) {
1000		printk(KERN_WARNING "Skipping twl internal clock init and "
1001				"using bootloader value (unknown osc rate)\n");
1002		return;
1003	}
1004
1005	rate = clk_get_rate(osc);
1006	clk_put(osc);
1007
1008	switch (rate) {
1009	case 19200000:
1010		ctrl = HFCLK_FREQ_19p2_MHZ;
1011		break;
1012	case 26000000:
1013		ctrl = HFCLK_FREQ_26_MHZ;
1014		break;
1015	case 38400000:
1016		ctrl = HFCLK_FREQ_38p4_MHZ;
1017		break;
1018	}
1019
1020	ctrl |= HIGH_PERF_SQ;
1021	if (clock && clock->ck32k_lowpwr_enable)
1022		ctrl |= CK32K_LOWPWR_EN;
1023
1024	e |= unprotect_pm_master();
1025	/* effect->MADC+USB ck en */
1026	e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1027	e |= protect_pm_master();
1028
1029	if (e < 0)
1030		pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1031}
1032
1033/*----------------------------------------------------------------------*/
1034
1035
1036static int twl_remove(struct i2c_client *client)
1037{
1038	unsigned i, num_slaves;
1039	int status;
1040
1041	if (twl_class_is_4030())
1042		status = twl4030_exit_irq();
1043	else
1044		status = twl6030_exit_irq();
1045
1046	if (status < 0)
1047		return status;
1048
1049	num_slaves = twl_get_num_slaves();
1050	for (i = 0; i < num_slaves; i++) {
1051		struct twl_client	*twl = &twl_priv->twl_modules[i];
1052
1053		if (twl->client && twl->client != client)
1054			i2c_unregister_device(twl->client);
1055		twl->client = NULL;
1056	}
1057	twl_priv->ready = false;
1058	return 0;
1059}
1060
1061static struct of_dev_auxdata twl_auxdata_lookup[] = {
1062	OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL),
1063	{ /* sentinel */ },
1064};
1065
1066/* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1067static int
1068twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1069{
1070	struct twl4030_platform_data	*pdata = dev_get_platdata(&client->dev);
1071	struct device_node		*node = client->dev.of_node;
1072	struct platform_device		*pdev;
1073	const struct regmap_config	*twl_regmap_config;
1074	int				irq_base = 0;
1075	int				status;
1076	unsigned			i, num_slaves;
1077
1078	if (!node && !pdata) {
1079		dev_err(&client->dev, "no platform data\n");
1080		return -EINVAL;
1081	}
1082
1083	if (twl_priv) {
1084		dev_dbg(&client->dev, "only one instance of %s allowed\n",
1085			DRIVER_NAME);
1086		return -EBUSY;
1087	}
1088
1089	pdev = platform_device_alloc(DRIVER_NAME, -1);
1090	if (!pdev) {
1091		dev_err(&client->dev, "can't alloc pdev\n");
1092		return -ENOMEM;
1093	}
1094
1095	status = platform_device_add(pdev);
1096	if (status) {
1097		platform_device_put(pdev);
1098		return status;
1099	}
1100
1101	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1102		dev_dbg(&client->dev, "can't talk I2C?\n");
1103		status = -EIO;
1104		goto free;
1105	}
1106
1107	twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),
1108				GFP_KERNEL);
1109	if (!twl_priv) {
1110		status = -ENOMEM;
1111		goto free;
1112	}
1113
1114	if ((id->driver_data) & TWL6030_CLASS) {
1115		twl_priv->twl_id = TWL6030_CLASS_ID;
1116		twl_priv->twl_map = &twl6030_map[0];
1117		/* The charger base address is different in twl6032 */
1118		if ((id->driver_data) & TWL6032_SUBCLASS)
1119			twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =
1120							TWL6032_BASEADD_CHARGER;
1121		twl_regmap_config = twl6030_regmap_config;
1122	} else {
1123		twl_priv->twl_id = TWL4030_CLASS_ID;
1124		twl_priv->twl_map = &twl4030_map[0];
1125		twl_regmap_config = twl4030_regmap_config;
1126	}
1127
1128	num_slaves = twl_get_num_slaves();
1129	twl_priv->twl_modules = devm_kcalloc(&client->dev,
1130					 num_slaves,
1131					 sizeof(struct twl_client),
1132					 GFP_KERNEL);
1133	if (!twl_priv->twl_modules) {
1134		status = -ENOMEM;
1135		goto free;
1136	}
1137
1138	for (i = 0; i < num_slaves; i++) {
1139		struct twl_client *twl = &twl_priv->twl_modules[i];
1140
1141		if (i == 0) {
1142			twl->client = client;
1143		} else {
1144			twl->client = i2c_new_dummy_device(client->adapter,
1145						    client->addr + i);
1146			if (IS_ERR(twl->client)) {
1147				dev_err(&client->dev,
1148					"can't attach client %d\n", i);
1149				status = PTR_ERR(twl->client);
1150				goto fail;
1151			}
1152		}
1153
1154		twl->regmap = devm_regmap_init_i2c(twl->client,
1155						   &twl_regmap_config[i]);
1156		if (IS_ERR(twl->regmap)) {
1157			status = PTR_ERR(twl->regmap);
1158			dev_err(&client->dev,
1159				"Failed to allocate regmap %d, err: %d\n", i,
1160				status);
1161			goto fail;
1162		}
1163	}
1164
1165	twl_priv->ready = true;
1166
1167	/* setup clock framework */
1168	clocks_init(&client->dev, pdata ? pdata->clock : NULL);
1169
1170	/* read TWL IDCODE Register */
1171	if (twl_class_is_4030()) {
1172		status = twl_read_idcode_register();
1173		WARN(status < 0, "Error: reading twl_idcode register value\n");
1174	}
1175
1176	/* Maybe init the T2 Interrupt subsystem */
1177	if (client->irq) {
1178		if (twl_class_is_4030()) {
1179			twl4030_init_chip_irq(id->name);
1180			irq_base = twl4030_init_irq(&client->dev, client->irq);
1181		} else {
1182			irq_base = twl6030_init_irq(&client->dev, client->irq);
1183		}
1184
1185		if (irq_base < 0) {
1186			status = irq_base;
1187			goto fail;
1188		}
1189	}
1190
1191	/*
1192	 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1193	 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1194	 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1195	 *
1196	 * Also, always enable SmartReflex bit as that's needed for omaps to
1197	 * to do anything over I2C4 for voltage scaling even if SmartReflex
1198	 * is disabled. Without the SmartReflex bit omap sys_clkreq idle
1199	 * signal will never trigger for retention idle.
1200	 */
1201	if (twl_class_is_4030()) {
1202		u8 temp;
1203
1204		twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1205		temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1206			I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1207		twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1208
1209		twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &temp,
1210				TWL4030_DCDC_GLOBAL_CFG);
1211		temp |= SMARTREFLEX_ENABLE;
1212		twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, temp,
1213				 TWL4030_DCDC_GLOBAL_CFG);
1214	}
1215
1216	if (node) {
1217		if (pdata)
1218			twl_auxdata_lookup[0].platform_data = pdata->gpio;
1219		status = of_platform_populate(node, NULL, twl_auxdata_lookup,
1220					      &client->dev);
1221	} else {
1222		status = add_children(pdata, irq_base, id->driver_data);
1223	}
1224
1225fail:
1226	if (status < 0)
1227		twl_remove(client);
1228free:
1229	if (status < 0)
1230		platform_device_unregister(pdev);
1231
1232	return status;
1233}
1234
1235static int __maybe_unused twl_suspend(struct device *dev)
1236{
1237	struct i2c_client *client = to_i2c_client(dev);
1238
1239	if (client->irq)
1240		disable_irq(client->irq);
1241
1242	return 0;
1243}
1244
1245static int __maybe_unused twl_resume(struct device *dev)
1246{
1247	struct i2c_client *client = to_i2c_client(dev);
1248
1249	if (client->irq)
1250		enable_irq(client->irq);
1251
1252	return 0;
1253}
1254
1255static SIMPLE_DEV_PM_OPS(twl_dev_pm_ops, twl_suspend, twl_resume);
1256
1257static const struct i2c_device_id twl_ids[] = {
1258	{ "twl4030", TWL4030_VAUX2 },	/* "Triton 2" */
1259	{ "twl5030", 0 },		/* T2 updated */
1260	{ "twl5031", TWL5031 },		/* TWL5030 updated */
1261	{ "tps65950", 0 },		/* catalog version of twl5030 */
1262	{ "tps65930", TPS_SUBSET },	/* fewer LDOs and DACs; no charger */
1263	{ "tps65920", TPS_SUBSET },	/* fewer LDOs; no codec or charger */
1264	{ "tps65921", TPS_SUBSET },	/* fewer LDOs; no codec, no LED
1265					   and vibrator. Charger in USB module*/
1266	{ "twl6030", TWL6030_CLASS },	/* "Phoenix power chip" */
1267	{ "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */
1268	{ /* end of list */ },
1269};
1270
1271/* One Client Driver , 4 Clients */
1272static struct i2c_driver twl_driver = {
1273	.driver.name	= DRIVER_NAME,
1274	.driver.pm	= &twl_dev_pm_ops,
1275	.id_table	= twl_ids,
1276	.probe		= twl_probe,
1277	.remove		= twl_remove,
1278};
1279builtin_i2c_driver(twl_driver);