Merge remote-tracking branch 'regulator/topic/supply' into regulator-next
[~shefty/rdma-dev.git] / 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/clk.h>
36 #include <linux/err.h>
37 #include <linux/device.h>
38 #include <linux/of.h>
39 #include <linux/of_irq.h>
40 #include <linux/of_platform.h>
41 #include <linux/irqdomain.h>
42
43 #include <linux/regulator/machine.h>
44
45 #include <linux/i2c.h>
46 #include <linux/i2c/twl.h>
47
48 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
49 #include <plat/cpu.h>
50 #endif
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 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
68 #define twl_has_keypad()        true
69 #else
70 #define twl_has_keypad()        false
71 #endif
72
73 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
74 #define twl_has_gpio()  true
75 #else
76 #define twl_has_gpio()  false
77 #endif
78
79 #if defined(CONFIG_REGULATOR_TWL4030) \
80         || defined(CONFIG_REGULATOR_TWL4030_MODULE)
81 #define twl_has_regulator()     true
82 #else
83 #define twl_has_regulator()     false
84 #endif
85
86 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
87 #define twl_has_madc()  true
88 #else
89 #define twl_has_madc()  false
90 #endif
91
92 #ifdef CONFIG_TWL4030_POWER
93 #define twl_has_power()        true
94 #else
95 #define twl_has_power()        false
96 #endif
97
98 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
99 #define twl_has_rtc()   true
100 #else
101 #define twl_has_rtc()   false
102 #endif
103
104 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
105         defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
106 #define twl_has_usb()   true
107 #else
108 #define twl_has_usb()   false
109 #endif
110
111 #if defined(CONFIG_TWL4030_WATCHDOG) || \
112         defined(CONFIG_TWL4030_WATCHDOG_MODULE)
113 #define twl_has_watchdog()        true
114 #else
115 #define twl_has_watchdog()        false
116 #endif
117
118 #if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\
119         defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
120 #define twl_has_codec() true
121 #else
122 #define twl_has_codec() false
123 #endif
124
125 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
126 #define twl_has_bci()   true
127 #else
128 #define twl_has_bci()   false
129 #endif
130
131 /* Triton Core internal information (BEGIN) */
132
133 /* Last - for index max*/
134 #define TWL4030_MODULE_LAST             TWL4030_MODULE_SECURED_REG
135
136 #define TWL_NUM_SLAVES          4
137
138 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
139         || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
140 #define twl_has_pwrbutton()     true
141 #else
142 #define twl_has_pwrbutton()     false
143 #endif
144
145 #define SUB_CHIP_ID0 0
146 #define SUB_CHIP_ID1 1
147 #define SUB_CHIP_ID2 2
148 #define SUB_CHIP_ID3 3
149
150 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
151
152 #define TWL4030_NR_IRQS    8
153 #define TWL6030_NR_IRQS    20
154
155 /* Base Address defns for twl4030_map[] */
156
157 /* subchip/slave 0 - USB ID */
158 #define TWL4030_BASEADD_USB             0x0000
159
160 /* subchip/slave 1 - AUD ID */
161 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
162 #define TWL4030_BASEADD_GPIO            0x0098
163 #define TWL4030_BASEADD_INTBR           0x0085
164 #define TWL4030_BASEADD_PIH             0x0080
165 #define TWL4030_BASEADD_TEST            0x004C
166
167 /* subchip/slave 2 - AUX ID */
168 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
169 #define TWL4030_BASEADD_LED             0x00EE
170 #define TWL4030_BASEADD_MADC            0x0000
171 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
172 #define TWL4030_BASEADD_PRECHARGE       0x00AA
173 #define TWL4030_BASEADD_PWM0            0x00F8
174 #define TWL4030_BASEADD_PWM1            0x00FB
175 #define TWL4030_BASEADD_PWMA            0x00EF
176 #define TWL4030_BASEADD_PWMB            0x00F1
177 #define TWL4030_BASEADD_KEYPAD          0x00D2
178
179 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
180 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
181                                                   one */
182
183 /* subchip/slave 3 - POWER ID */
184 #define TWL4030_BASEADD_BACKUP          0x0014
185 #define TWL4030_BASEADD_INT             0x002E
186 #define TWL4030_BASEADD_PM_MASTER       0x0036
187 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
188 #define TWL4030_BASEADD_RTC             0x001C
189 #define TWL4030_BASEADD_SECURED_REG     0x0000
190
191 /* Triton Core internal information (END) */
192
193
194 /* subchip/slave 0 0x48 - POWER */
195 #define TWL6030_BASEADD_RTC             0x0000
196 #define TWL6030_BASEADD_MEM             0x0017
197 #define TWL6030_BASEADD_PM_MASTER       0x001F
198 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
199 #define TWL6030_BASEADD_PM_MISC         0x00E2
200 #define TWL6030_BASEADD_PM_PUPD         0x00F0
201
202 /* subchip/slave 1 0x49 - FEATURE */
203 #define TWL6030_BASEADD_USB             0x0000
204 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
205 #define TWL6030_BASEADD_AUX             0x0090
206 #define TWL6030_BASEADD_PWM             0x00BA
207 #define TWL6030_BASEADD_GASGAUGE        0x00C0
208 #define TWL6030_BASEADD_PIH             0x00D0
209 #define TWL6030_BASEADD_CHARGER         0x00E0
210 #define TWL6025_BASEADD_CHARGER         0x00DA
211
212 /* subchip/slave 2 0x4A - DFT */
213 #define TWL6030_BASEADD_DIEID           0x00C0
214
215 /* subchip/slave 3 0x4B - AUDIO */
216 #define TWL6030_BASEADD_AUDIO           0x0000
217 #define TWL6030_BASEADD_RSV             0x0000
218 #define TWL6030_BASEADD_ZERO            0x0000
219
220 /* Few power values */
221 #define R_CFG_BOOT                      0x05
222
223 /* some fields in R_CFG_BOOT */
224 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
225 #define HFCLK_FREQ_26_MHZ               (2 << 0)
226 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
227 #define HIGH_PERF_SQ                    (1 << 3)
228 #define CK32K_LOWPWR_EN                 (1 << 7)
229
230
231 /* chip-specific feature flags, for i2c_device_id.driver_data */
232 #define TWL4030_VAUX2           BIT(0)  /* pre-5030 voltage ranges */
233 #define TPS_SUBSET              BIT(1)  /* tps659[23]0 have fewer LDOs */
234 #define TWL5031                 BIT(2)  /* twl5031 has different registers */
235 #define TWL6030_CLASS           BIT(3)  /* TWL6030 class */
236
237 /*----------------------------------------------------------------------*/
238
239 /* is driver active, bound to a chip? */
240 static bool inuse;
241
242 /* TWL IDCODE Register value */
243 static u32 twl_idcode;
244
245 static unsigned int twl_id;
246 unsigned int twl_rev(void)
247 {
248         return twl_id;
249 }
250 EXPORT_SYMBOL(twl_rev);
251
252 /* Structure for each TWL4030/TWL6030 Slave */
253 struct twl_client {
254         struct i2c_client *client;
255         u8 address;
256
257         /* max numb of i2c_msg required is for read =2 */
258         struct i2c_msg xfer_msg[2];
259
260         /* To lock access to xfer_msg */
261         struct mutex xfer_lock;
262 };
263
264 static struct twl_client twl_modules[TWL_NUM_SLAVES];
265
266 #ifdef CONFIG_IRQ_DOMAIN
267 static struct irq_domain domain;
268 #endif
269
270 /* mapping the module id to slave id and base address */
271 struct twl_mapping {
272         unsigned char sid;      /* Slave ID */
273         unsigned char base;     /* base address */
274 };
275 static struct twl_mapping *twl_map;
276
277 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
278         /*
279          * NOTE:  don't change this table without updating the
280          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
281          * so they continue to match the order in this table.
282          */
283
284         { 0, TWL4030_BASEADD_USB },
285
286         { 1, TWL4030_BASEADD_AUDIO_VOICE },
287         { 1, TWL4030_BASEADD_GPIO },
288         { 1, TWL4030_BASEADD_INTBR },
289         { 1, TWL4030_BASEADD_PIH },
290         { 1, TWL4030_BASEADD_TEST },
291
292         { 2, TWL4030_BASEADD_KEYPAD },
293         { 2, TWL4030_BASEADD_MADC },
294         { 2, TWL4030_BASEADD_INTERRUPTS },
295         { 2, TWL4030_BASEADD_LED },
296         { 2, TWL4030_BASEADD_MAIN_CHARGE },
297         { 2, TWL4030_BASEADD_PRECHARGE },
298         { 2, TWL4030_BASEADD_PWM0 },
299         { 2, TWL4030_BASEADD_PWM1 },
300         { 2, TWL4030_BASEADD_PWMA },
301         { 2, TWL4030_BASEADD_PWMB },
302         { 2, TWL5031_BASEADD_ACCESSORY },
303         { 2, TWL5031_BASEADD_INTERRUPTS },
304
305         { 3, TWL4030_BASEADD_BACKUP },
306         { 3, TWL4030_BASEADD_INT },
307         { 3, TWL4030_BASEADD_PM_MASTER },
308         { 3, TWL4030_BASEADD_PM_RECEIVER },
309         { 3, TWL4030_BASEADD_RTC },
310         { 3, TWL4030_BASEADD_SECURED_REG },
311 };
312
313 static struct twl_mapping twl6030_map[] = {
314         /*
315          * NOTE:  don't change this table without updating the
316          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
317          * so they continue to match the order in this table.
318          */
319         { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
320         { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
321         { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
322         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
323         { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
324
325         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
326         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
327         { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
328         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
329         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
330
331         { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
332         { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
333         { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
334         { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
335         { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
336
337         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
338         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
339         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
340         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
341         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
342         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
343         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
344
345         { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
346         { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
347         { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
348 };
349
350 /*----------------------------------------------------------------------*/
351
352 /* Exported Functions */
353
354 /**
355  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
356  * @mod_no: module number
357  * @value: an array of num_bytes+1 containing data to write
358  * @reg: register address (just offset will do)
359  * @num_bytes: number of bytes to transfer
360  *
361  * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
362  * valid data starts at Offset 1.
363  *
364  * Returns the result of operation - 0 is success
365  */
366 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
367 {
368         int ret;
369         int sid;
370         struct twl_client *twl;
371         struct i2c_msg *msg;
372
373         if (unlikely(mod_no > TWL_MODULE_LAST)) {
374                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
375                 return -EPERM;
376         }
377         if (unlikely(!inuse)) {
378                 pr_err("%s: not initialized\n", DRIVER_NAME);
379                 return -EPERM;
380         }
381         sid = twl_map[mod_no].sid;
382         twl = &twl_modules[sid];
383
384         mutex_lock(&twl->xfer_lock);
385         /*
386          * [MSG1]: fill the register address data
387          * fill the data Tx buffer
388          */
389         msg = &twl->xfer_msg[0];
390         msg->addr = twl->address;
391         msg->len = num_bytes + 1;
392         msg->flags = 0;
393         msg->buf = value;
394         /* over write the first byte of buffer with the register address */
395         *value = twl_map[mod_no].base + reg;
396         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
397         mutex_unlock(&twl->xfer_lock);
398
399         /* i2c_transfer returns number of messages transferred */
400         if (ret != 1) {
401                 pr_err("%s: i2c_write failed to transfer all messages\n",
402                         DRIVER_NAME);
403                 if (ret < 0)
404                         return ret;
405                 else
406                         return -EIO;
407         } else {
408                 return 0;
409         }
410 }
411 EXPORT_SYMBOL(twl_i2c_write);
412
413 /**
414  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
415  * @mod_no: module number
416  * @value: an array of num_bytes containing data to be read
417  * @reg: register address (just offset will do)
418  * @num_bytes: number of bytes to transfer
419  *
420  * Returns result of operation - num_bytes is success else failure.
421  */
422 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
423 {
424         int ret;
425         u8 val;
426         int sid;
427         struct twl_client *twl;
428         struct i2c_msg *msg;
429
430         if (unlikely(mod_no > TWL_MODULE_LAST)) {
431                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
432                 return -EPERM;
433         }
434         if (unlikely(!inuse)) {
435                 pr_err("%s: not initialized\n", DRIVER_NAME);
436                 return -EPERM;
437         }
438         sid = twl_map[mod_no].sid;
439         twl = &twl_modules[sid];
440
441         mutex_lock(&twl->xfer_lock);
442         /* [MSG1] fill the register address data */
443         msg = &twl->xfer_msg[0];
444         msg->addr = twl->address;
445         msg->len = 1;
446         msg->flags = 0; /* Read the register value */
447         val = twl_map[mod_no].base + reg;
448         msg->buf = &val;
449         /* [MSG2] fill the data rx buffer */
450         msg = &twl->xfer_msg[1];
451         msg->addr = twl->address;
452         msg->flags = I2C_M_RD;  /* Read the register value */
453         msg->len = num_bytes;   /* only n bytes */
454         msg->buf = value;
455         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
456         mutex_unlock(&twl->xfer_lock);
457
458         /* i2c_transfer returns number of messages transferred */
459         if (ret != 2) {
460                 pr_err("%s: i2c_read failed to transfer all messages\n",
461                         DRIVER_NAME);
462                 if (ret < 0)
463                         return ret;
464                 else
465                         return -EIO;
466         } else {
467                 return 0;
468         }
469 }
470 EXPORT_SYMBOL(twl_i2c_read);
471
472 /**
473  * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
474  * @mod_no: module number
475  * @value: the value to be written 8 bit
476  * @reg: register address (just offset will do)
477  *
478  * Returns result of operation - 0 is success
479  */
480 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
481 {
482
483         /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
484         u8 temp_buffer[2] = { 0 };
485         /* offset 1 contains the data */
486         temp_buffer[1] = value;
487         return twl_i2c_write(mod_no, temp_buffer, reg, 1);
488 }
489 EXPORT_SYMBOL(twl_i2c_write_u8);
490
491 /**
492  * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
493  * @mod_no: module number
494  * @value: the value read 8 bit
495  * @reg: register address (just offset will do)
496  *
497  * Returns result of operation - 0 is success
498  */
499 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
500 {
501         return twl_i2c_read(mod_no, value, reg, 1);
502 }
503 EXPORT_SYMBOL(twl_i2c_read_u8);
504
505 /*----------------------------------------------------------------------*/
506
507 /**
508  * twl_read_idcode_register - API to read the IDCODE register.
509  *
510  * Unlocks the IDCODE register and read the 32 bit value.
511  */
512 static int twl_read_idcode_register(void)
513 {
514         int err;
515
516         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
517                                                 REG_UNLOCK_TEST_REG);
518         if (err) {
519                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
520                 goto fail;
521         }
522
523         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
524                                                 REG_IDCODE_7_0, 4);
525         if (err) {
526                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
527                 goto fail;
528         }
529
530         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
531         if (err)
532                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
533 fail:
534         return err;
535 }
536
537 /**
538  * twl_get_type - API to get TWL Si type.
539  *
540  * Api to get the TWL Si type from IDCODE value.
541  */
542 int twl_get_type(void)
543 {
544         return TWL_SIL_TYPE(twl_idcode);
545 }
546 EXPORT_SYMBOL_GPL(twl_get_type);
547
548 /**
549  * twl_get_version - API to get TWL Si version.
550  *
551  * Api to get the TWL Si version from IDCODE value.
552  */
553 int twl_get_version(void)
554 {
555         return TWL_SIL_REV(twl_idcode);
556 }
557 EXPORT_SYMBOL_GPL(twl_get_version);
558
559 static struct device *
560 add_numbered_child(unsigned chip, const char *name, int num,
561                 void *pdata, unsigned pdata_len,
562                 bool can_wakeup, int irq0, int irq1)
563 {
564         struct platform_device  *pdev;
565         struct twl_client       *twl = &twl_modules[chip];
566         int                     status;
567
568         pdev = platform_device_alloc(name, num);
569         if (!pdev) {
570                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
571                 status = -ENOMEM;
572                 goto err;
573         }
574
575         device_init_wakeup(&pdev->dev, can_wakeup);
576         pdev->dev.parent = &twl->client->dev;
577
578         if (pdata) {
579                 status = platform_device_add_data(pdev, pdata, pdata_len);
580                 if (status < 0) {
581                         dev_dbg(&pdev->dev, "can't add platform_data\n");
582                         goto err;
583                 }
584         }
585
586         if (irq0) {
587                 struct resource r[2] = {
588                         { .start = irq0, .flags = IORESOURCE_IRQ, },
589                         { .start = irq1, .flags = IORESOURCE_IRQ, },
590                 };
591
592                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
593                 if (status < 0) {
594                         dev_dbg(&pdev->dev, "can't add irqs\n");
595                         goto err;
596                 }
597         }
598
599         status = platform_device_add(pdev);
600
601 err:
602         if (status < 0) {
603                 platform_device_put(pdev);
604                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
605                 return ERR_PTR(status);
606         }
607         return &pdev->dev;
608 }
609
610 static inline struct device *add_child(unsigned chip, const char *name,
611                 void *pdata, unsigned pdata_len,
612                 bool can_wakeup, int irq0, int irq1)
613 {
614         return add_numbered_child(chip, name, -1, pdata, pdata_len,
615                 can_wakeup, irq0, irq1);
616 }
617
618 static struct device *
619 add_regulator_linked(int num, struct regulator_init_data *pdata,
620                 struct regulator_consumer_supply *consumers,
621                 unsigned num_consumers, unsigned long features)
622 {
623         unsigned sub_chip_id;
624         /* regulator framework demands init_data ... */
625         if (!pdata)
626                 return NULL;
627
628         if (consumers) {
629                 pdata->consumer_supplies = consumers;
630                 pdata->num_consumer_supplies = num_consumers;
631         }
632
633         pdata->driver_data = (void *)features;
634
635         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
636         sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
637         return add_numbered_child(sub_chip_id, "twl_reg", num,
638                 pdata, sizeof(*pdata), false, 0, 0);
639 }
640
641 static struct device *
642 add_regulator(int num, struct regulator_init_data *pdata,
643                 unsigned long features)
644 {
645         return add_regulator_linked(num, pdata, NULL, 0, features);
646 }
647
648 /*
649  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
650  * for the PIH, and the next are for the PWR_INT SIH, since
651  * that's how twl_init_irq() sets things up.
652  */
653
654 static int
655 add_children(struct twl4030_platform_data *pdata, unsigned long features)
656 {
657         struct device   *child;
658         unsigned sub_chip_id;
659
660         if (twl_has_gpio() && pdata->gpio) {
661                 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
662                                 pdata->gpio, sizeof(*pdata->gpio),
663                                 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
664                 if (IS_ERR(child))
665                         return PTR_ERR(child);
666         }
667
668         if (twl_has_keypad() && pdata->keypad) {
669                 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
670                                 pdata->keypad, sizeof(*pdata->keypad),
671                                 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
672                 if (IS_ERR(child))
673                         return PTR_ERR(child);
674         }
675
676         if (twl_has_madc() && pdata->madc) {
677                 child = add_child(2, "twl4030_madc",
678                                 pdata->madc, sizeof(*pdata->madc),
679                                 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
680                 if (IS_ERR(child))
681                         return PTR_ERR(child);
682         }
683
684         if (twl_has_rtc()) {
685                 /*
686                  * REVISIT platform_data here currently might expose the
687                  * "msecure" line ... but for now we just expect board
688                  * setup to tell the chip "it's always ok to SET_TIME".
689                  * Eventually, Linux might become more aware of such
690                  * HW security concerns, and "least privilege".
691                  */
692                 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
693                 child = add_child(sub_chip_id, "twl_rtc",
694                                 NULL, 0,
695                                 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
696                 if (IS_ERR(child))
697                         return PTR_ERR(child);
698         }
699
700         if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
701
702                 static struct regulator_consumer_supply usb1v5 = {
703                         .supply =       "usb1v5",
704                 };
705                 static struct regulator_consumer_supply usb1v8 = {
706                         .supply =       "usb1v8",
707                 };
708                 static struct regulator_consumer_supply usb3v1 = {
709                         .supply =       "usb3v1",
710                 };
711
712         /* First add the regulators so that they can be used by transceiver */
713                 if (twl_has_regulator()) {
714                         /* this is a template that gets copied */
715                         struct regulator_init_data usb_fixed = {
716                                 .constraints.valid_modes_mask =
717                                         REGULATOR_MODE_NORMAL
718                                         | REGULATOR_MODE_STANDBY,
719                                 .constraints.valid_ops_mask =
720                                         REGULATOR_CHANGE_MODE
721                                         | REGULATOR_CHANGE_STATUS,
722                         };
723
724                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
725                                                       &usb_fixed, &usb1v5, 1,
726                                                       features);
727                         if (IS_ERR(child))
728                                 return PTR_ERR(child);
729
730                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
731                                                       &usb_fixed, &usb1v8, 1,
732                                                       features);
733                         if (IS_ERR(child))
734                                 return PTR_ERR(child);
735
736                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
737                                                       &usb_fixed, &usb3v1, 1,
738                                                       features);
739                         if (IS_ERR(child))
740                                 return PTR_ERR(child);
741
742                 }
743
744                 child = add_child(0, "twl4030_usb",
745                                 pdata->usb, sizeof(*pdata->usb),
746                                 true,
747                                 /* irq0 = USB_PRES, irq1 = USB */
748                                 pdata->irq_base + USB_PRES_INTR_OFFSET,
749                                 pdata->irq_base + USB_INTR_OFFSET);
750
751                 if (IS_ERR(child))
752                         return PTR_ERR(child);
753
754                 /* we need to connect regulators to this transceiver */
755                 if (twl_has_regulator() && child) {
756                         usb1v5.dev_name = dev_name(child);
757                         usb1v8.dev_name = dev_name(child);
758                         usb3v1.dev_name = dev_name(child);
759                 }
760         }
761         if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
762
763                 static struct regulator_consumer_supply usb3v3;
764                 int regulator;
765
766                 if (twl_has_regulator()) {
767                         /* this is a template that gets copied */
768                         struct regulator_init_data usb_fixed = {
769                                 .constraints.valid_modes_mask =
770                                         REGULATOR_MODE_NORMAL
771                                         | REGULATOR_MODE_STANDBY,
772                                 .constraints.valid_ops_mask =
773                                         REGULATOR_CHANGE_MODE
774                                         | REGULATOR_CHANGE_STATUS,
775                         };
776
777                         if (features & TWL6025_SUBCLASS) {
778                                 usb3v3.supply = "ldousb";
779                                 regulator = TWL6025_REG_LDOUSB;
780                         } else {
781                                 usb3v3.supply = "vusb";
782                                 regulator = TWL6030_REG_VUSB;
783                         }
784                         child = add_regulator_linked(regulator, &usb_fixed,
785                                                         &usb3v3, 1,
786                                                         features);
787                         if (IS_ERR(child))
788                                 return PTR_ERR(child);
789                 }
790
791                 pdata->usb->features = features;
792
793                 child = add_child(0, "twl6030_usb",
794                         pdata->usb, sizeof(*pdata->usb),
795                         true,
796                         /* irq1 = VBUS_PRES, irq0 = USB ID */
797                         pdata->irq_base + USBOTG_INTR_OFFSET,
798                         pdata->irq_base + USB_PRES_INTR_OFFSET);
799
800                 if (IS_ERR(child))
801                         return PTR_ERR(child);
802                 /* we need to connect regulators to this transceiver */
803                 if (twl_has_regulator() && child)
804                         usb3v3.dev_name = dev_name(child);
805         } else if (twl_has_regulator() && twl_class_is_6030()) {
806                 if (features & TWL6025_SUBCLASS)
807                         child = add_regulator(TWL6025_REG_LDOUSB,
808                                                 pdata->ldousb, features);
809                 else
810                         child = add_regulator(TWL6030_REG_VUSB,
811                                                 pdata->vusb, features);
812
813                         if (IS_ERR(child))
814                                         return PTR_ERR(child);
815         }
816
817         if (twl_has_watchdog() && twl_class_is_4030()) {
818                 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
819                 if (IS_ERR(child))
820                         return PTR_ERR(child);
821         }
822
823         if (twl_has_pwrbutton() && twl_class_is_4030()) {
824                 child = add_child(1, "twl4030_pwrbutton",
825                                 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
826                 if (IS_ERR(child))
827                         return PTR_ERR(child);
828         }
829
830         if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
831                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
832                 child = add_child(sub_chip_id, "twl4030-audio",
833                                 pdata->audio, sizeof(*pdata->audio),
834                                 false, 0, 0);
835                 if (IS_ERR(child))
836                         return PTR_ERR(child);
837         }
838
839         if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
840                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
841                 child = add_child(sub_chip_id, "twl6040",
842                                 pdata->audio, sizeof(*pdata->audio),
843                                 false, 0, 0);
844                 if (IS_ERR(child))
845                         return PTR_ERR(child);
846         }
847
848         /* twl4030 regulators */
849         if (twl_has_regulator() && twl_class_is_4030()) {
850                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
851                                         features);
852                 if (IS_ERR(child))
853                         return PTR_ERR(child);
854
855                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
856                                         features);
857                 if (IS_ERR(child))
858                         return PTR_ERR(child);
859
860                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
861                                         features);
862                 if (IS_ERR(child))
863                         return PTR_ERR(child);
864
865                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
866                                         features);
867                 if (IS_ERR(child))
868                         return PTR_ERR(child);
869
870                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
871                                         features);
872                 if (IS_ERR(child))
873                         return PTR_ERR(child);
874
875                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
876                                         features);
877                 if (IS_ERR(child))
878                         return PTR_ERR(child);
879
880                 child = add_regulator((features & TWL4030_VAUX2)
881                                         ? TWL4030_REG_VAUX2_4030
882                                         : TWL4030_REG_VAUX2,
883                                 pdata->vaux2, features);
884                 if (IS_ERR(child))
885                         return PTR_ERR(child);
886
887                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
888                                         features);
889                 if (IS_ERR(child))
890                         return PTR_ERR(child);
891
892                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
893                                         features);
894                 if (IS_ERR(child))
895                         return PTR_ERR(child);
896
897                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
898                                         features);
899                 if (IS_ERR(child))
900                         return PTR_ERR(child);
901         }
902
903         /* maybe add LDOs that are omitted on cost-reduced parts */
904         if (twl_has_regulator() && !(features & TPS_SUBSET)
905           && twl_class_is_4030()) {
906                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
907                                         features);
908                 if (IS_ERR(child))
909                         return PTR_ERR(child);
910
911                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
912                                         features);
913                 if (IS_ERR(child))
914                         return PTR_ERR(child);
915
916                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
917                                         features);
918                 if (IS_ERR(child))
919                         return PTR_ERR(child);
920
921                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
922                                         features);
923                 if (IS_ERR(child))
924                         return PTR_ERR(child);
925
926                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
927                                         features);
928                 if (IS_ERR(child))
929                         return PTR_ERR(child);
930
931                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
932                                         features);
933                 if (IS_ERR(child))
934                         return PTR_ERR(child);
935         }
936
937         /* twl6030 regulators */
938         if (twl_has_regulator() && twl_class_is_6030() &&
939                         !(features & TWL6025_SUBCLASS)) {
940                 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
941                                         features);
942                 if (IS_ERR(child))
943                         return PTR_ERR(child);
944
945                 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
946                                         features);
947                 if (IS_ERR(child))
948                         return PTR_ERR(child);
949
950                 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
951                                         features);
952                 if (IS_ERR(child))
953                         return PTR_ERR(child);
954
955                 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
956                                         features);
957                 if (IS_ERR(child))
958                         return PTR_ERR(child);
959
960                 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
961                                         features);
962                 if (IS_ERR(child))
963                         return PTR_ERR(child);
964
965                 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
966                                         features);
967                 if (IS_ERR(child))
968                         return PTR_ERR(child);
969
970                 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
971                                         features);
972                 if (IS_ERR(child))
973                         return PTR_ERR(child);
974
975                 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
976                                         features);
977                 if (IS_ERR(child))
978                         return PTR_ERR(child);
979
980                 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
981                                         features);
982                 if (IS_ERR(child))
983                         return PTR_ERR(child);
984         }
985
986         /* 6030 and 6025 share this regulator */
987         if (twl_has_regulator() && twl_class_is_6030()) {
988                 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
989                                         features);
990                 if (IS_ERR(child))
991                         return PTR_ERR(child);
992         }
993
994         /* twl6025 regulators */
995         if (twl_has_regulator() && twl_class_is_6030() &&
996                         (features & TWL6025_SUBCLASS)) {
997                 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
998                                         features);
999                 if (IS_ERR(child))
1000                         return PTR_ERR(child);
1001
1002                 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1003                                         features);
1004                 if (IS_ERR(child))
1005                         return PTR_ERR(child);
1006
1007                 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1008                                         features);
1009                 if (IS_ERR(child))
1010                         return PTR_ERR(child);
1011
1012                 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1013                                         features);
1014                 if (IS_ERR(child))
1015                         return PTR_ERR(child);
1016
1017                 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1018                                         features);
1019                 if (IS_ERR(child))
1020                         return PTR_ERR(child);
1021
1022                 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1023                                         features);
1024                 if (IS_ERR(child))
1025                         return PTR_ERR(child);
1026
1027                 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1028                                         features);
1029                 if (IS_ERR(child))
1030                         return PTR_ERR(child);
1031
1032                 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1033                                         features);
1034                 if (IS_ERR(child))
1035                         return PTR_ERR(child);
1036
1037                 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1038                                         features);
1039                 if (IS_ERR(child))
1040                         return PTR_ERR(child);
1041
1042                 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1043                                         features);
1044                 if (IS_ERR(child))
1045                         return PTR_ERR(child);
1046
1047                 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1048                                         features);
1049                 if (IS_ERR(child))
1050                         return PTR_ERR(child);
1051
1052         }
1053
1054         if (twl_has_bci() && pdata->bci &&
1055                         !(features & (TPS_SUBSET | TWL5031))) {
1056                 child = add_child(3, "twl4030_bci",
1057                                 pdata->bci, sizeof(*pdata->bci), false,
1058                                 /* irq0 = CHG_PRES, irq1 = BCI */
1059                                 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1060                                 pdata->irq_base + BCI_INTR_OFFSET);
1061                 if (IS_ERR(child))
1062                         return PTR_ERR(child);
1063         }
1064
1065         return 0;
1066 }
1067
1068 /*----------------------------------------------------------------------*/
1069
1070 /*
1071  * These three functions initialize the on-chip clock framework,
1072  * letting it generate the right frequencies for USB, MADC, and
1073  * other purposes.
1074  */
1075 static inline int __init protect_pm_master(void)
1076 {
1077         int e = 0;
1078
1079         e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1080                         TWL4030_PM_MASTER_PROTECT_KEY);
1081         return e;
1082 }
1083
1084 static inline int __init unprotect_pm_master(void)
1085 {
1086         int e = 0;
1087
1088         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1089                         TWL4030_PM_MASTER_KEY_CFG1,
1090                         TWL4030_PM_MASTER_PROTECT_KEY);
1091         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1092                         TWL4030_PM_MASTER_KEY_CFG2,
1093                         TWL4030_PM_MASTER_PROTECT_KEY);
1094
1095         return e;
1096 }
1097
1098 static void clocks_init(struct device *dev,
1099                         struct twl4030_clock_init_data *clock)
1100 {
1101         int e = 0;
1102         struct clk *osc;
1103         u32 rate;
1104         u8 ctrl = HFCLK_FREQ_26_MHZ;
1105
1106 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1107         if (cpu_is_omap2430())
1108                 osc = clk_get(dev, "osc_ck");
1109         else
1110                 osc = clk_get(dev, "osc_sys_ck");
1111
1112         if (IS_ERR(osc)) {
1113                 printk(KERN_WARNING "Skipping twl internal clock init and "
1114                                 "using bootloader value (unknown osc rate)\n");
1115                 return;
1116         }
1117
1118         rate = clk_get_rate(osc);
1119         clk_put(osc);
1120
1121 #else
1122         /* REVISIT for non-OMAP systems, pass the clock rate from
1123          * board init code, using platform_data.
1124          */
1125         osc = ERR_PTR(-EIO);
1126
1127         printk(KERN_WARNING "Skipping twl internal clock init and "
1128                "using bootloader value (unknown osc rate)\n");
1129
1130         return;
1131 #endif
1132
1133         switch (rate) {
1134         case 19200000:
1135                 ctrl = HFCLK_FREQ_19p2_MHZ;
1136                 break;
1137         case 26000000:
1138                 ctrl = HFCLK_FREQ_26_MHZ;
1139                 break;
1140         case 38400000:
1141                 ctrl = HFCLK_FREQ_38p4_MHZ;
1142                 break;
1143         }
1144
1145         ctrl |= HIGH_PERF_SQ;
1146         if (clock && clock->ck32k_lowpwr_enable)
1147                 ctrl |= CK32K_LOWPWR_EN;
1148
1149         e |= unprotect_pm_master();
1150         /* effect->MADC+USB ck en */
1151         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1152         e |= protect_pm_master();
1153
1154         if (e < 0)
1155                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1156 }
1157
1158 /*----------------------------------------------------------------------*/
1159
1160 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1161 int twl4030_exit_irq(void);
1162 int twl4030_init_chip_irq(const char *chip);
1163 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1164 int twl6030_exit_irq(void);
1165
1166 static int twl_remove(struct i2c_client *client)
1167 {
1168         unsigned i;
1169         int status;
1170
1171         if (twl_class_is_4030())
1172                 status = twl4030_exit_irq();
1173         else
1174                 status = twl6030_exit_irq();
1175
1176         if (status < 0)
1177                 return status;
1178
1179         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1180                 struct twl_client       *twl = &twl_modules[i];
1181
1182                 if (twl->client && twl->client != client)
1183                         i2c_unregister_device(twl->client);
1184                 twl_modules[i].client = NULL;
1185         }
1186         inuse = false;
1187         return 0;
1188 }
1189
1190 /* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
1191 static int __devinit
1192 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1193 {
1194         int                             status;
1195         unsigned                        i;
1196         struct twl4030_platform_data    *pdata = client->dev.platform_data;
1197         struct device_node              *node = client->dev.of_node;
1198         u8 temp;
1199         int ret = 0;
1200         int nr_irqs = TWL4030_NR_IRQS;
1201
1202         if ((id->driver_data) & TWL6030_CLASS)
1203                 nr_irqs = TWL6030_NR_IRQS;
1204
1205         if (node && !pdata) {
1206                 /*
1207                  * XXX: Temporary pdata until the information is correctly
1208                  * retrieved by every TWL modules from DT.
1209                  */
1210                 pdata = devm_kzalloc(&client->dev,
1211                                      sizeof(struct twl4030_platform_data),
1212                                      GFP_KERNEL);
1213                 if (!pdata)
1214                         return -ENOMEM;
1215         }
1216
1217         if (!pdata) {
1218                 dev_dbg(&client->dev, "no platform data?\n");
1219                 return -EINVAL;
1220         }
1221
1222         status = irq_alloc_descs(-1, pdata->irq_base, nr_irqs, 0);
1223         if (IS_ERR_VALUE(status)) {
1224                 dev_err(&client->dev, "Fail to allocate IRQ descs\n");
1225                 return status;
1226         }
1227
1228         pdata->irq_base = status;
1229         pdata->irq_end = pdata->irq_base + nr_irqs;
1230
1231 #ifdef CONFIG_IRQ_DOMAIN
1232         domain.irq_base = pdata->irq_base;
1233         domain.nr_irq = nr_irqs;
1234         domain.of_node = of_node_get(node);
1235         domain.ops = &irq_domain_simple_ops;
1236         irq_domain_add(&domain);
1237 #endif
1238
1239         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1240                 dev_dbg(&client->dev, "can't talk I2C?\n");
1241                 return -EIO;
1242         }
1243
1244         if (inuse) {
1245                 dev_dbg(&client->dev, "driver is already in use\n");
1246                 return -EBUSY;
1247         }
1248
1249         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1250                 struct twl_client       *twl = &twl_modules[i];
1251
1252                 twl->address = client->addr + i;
1253                 if (i == 0)
1254                         twl->client = client;
1255                 else {
1256                         twl->client = i2c_new_dummy(client->adapter,
1257                                         twl->address);
1258                         if (!twl->client) {
1259                                 dev_err(&client->dev,
1260                                         "can't attach client %d\n", i);
1261                                 status = -ENOMEM;
1262                                 goto fail;
1263                         }
1264                 }
1265                 mutex_init(&twl->xfer_lock);
1266         }
1267         inuse = true;
1268         if ((id->driver_data) & TWL6030_CLASS) {
1269                 twl_id = TWL6030_CLASS_ID;
1270                 twl_map = &twl6030_map[0];
1271         } else {
1272                 twl_id = TWL4030_CLASS_ID;
1273                 twl_map = &twl4030_map[0];
1274         }
1275
1276         /* setup clock framework */
1277         clocks_init(&client->dev, pdata->clock);
1278
1279         /* read TWL IDCODE Register */
1280         if (twl_id == TWL4030_CLASS_ID) {
1281                 ret = twl_read_idcode_register();
1282                 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1283         }
1284
1285         /* load power event scripts */
1286         if (twl_has_power() && pdata->power)
1287                 twl4030_power_init(pdata->power);
1288
1289         /* Maybe init the T2 Interrupt subsystem */
1290         if (client->irq
1291                         && pdata->irq_base
1292                         && pdata->irq_end > pdata->irq_base) {
1293                 if (twl_class_is_4030()) {
1294                         twl4030_init_chip_irq(id->name);
1295                         status = twl4030_init_irq(client->irq, pdata->irq_base,
1296                         pdata->irq_end);
1297                 } else {
1298                         status = twl6030_init_irq(client->irq, pdata->irq_base,
1299                         pdata->irq_end);
1300                 }
1301
1302                 if (status < 0)
1303                         goto fail;
1304         }
1305
1306         /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1307          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1308          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1309          */
1310
1311         if (twl_class_is_4030()) {
1312                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1313                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1314                 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1315                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1316         }
1317
1318 #ifdef CONFIG_OF_DEVICE
1319         if (node)
1320                 status = of_platform_populate(node, NULL, NULL, &client->dev);
1321         else
1322 #endif
1323                 status = add_children(pdata, id->driver_data);
1324
1325 fail:
1326         if (status < 0)
1327                 twl_remove(client);
1328         return status;
1329 }
1330
1331 static const struct i2c_device_id twl_ids[] = {
1332         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1333         { "twl5030", 0 },               /* T2 updated */
1334         { "twl5031", TWL5031 },         /* TWL5030 updated */
1335         { "tps65950", 0 },              /* catalog version of twl5030 */
1336         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1337         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1338         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1339                                            and vibrator. Charger in USB module*/
1340         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1341         { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1342         { /* end of list */ },
1343 };
1344 MODULE_DEVICE_TABLE(i2c, twl_ids);
1345
1346 /* One Client Driver , 4 Clients */
1347 static struct i2c_driver twl_driver = {
1348         .driver.name    = DRIVER_NAME,
1349         .id_table       = twl_ids,
1350         .probe          = twl_probe,
1351         .remove         = twl_remove,
1352 };
1353
1354 static int __init twl_init(void)
1355 {
1356         return i2c_add_driver(&twl_driver);
1357 }
1358 subsys_initcall(twl_init);
1359
1360 static void __exit twl_exit(void)
1361 {
1362         i2c_del_driver(&twl_driver);
1363 }
1364 module_exit(twl_exit);
1365
1366 MODULE_AUTHOR("Texas Instruments, Inc.");
1367 MODULE_DESCRIPTION("I2C Core interface for TWL");
1368 MODULE_LICENSE("GPL");