Merge branch 'fixes-hwmod-regression' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6.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
38 #include <linux/regulator/machine.h>
39
40 #include <linux/i2c.h>
41 #include <linux/i2c/twl.h>
42
43 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
44 #include <plat/cpu.h>
45 #endif
46
47 /*
48  * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
49  * Management and System Companion Device" chips originally designed for
50  * use in OMAP2 and OMAP 3 based systems.  Its control interfaces use I2C,
51  * often at around 3 Mbit/sec, including for interrupt handling.
52  *
53  * This driver core provides genirq support for the interrupts emitted,
54  * by the various modules, and exports register access primitives.
55  *
56  * FIXME this driver currently requires use of the first interrupt line
57  * (and associated registers).
58  */
59
60 #define DRIVER_NAME                     "twl"
61
62 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
63 #define twl_has_keypad()        true
64 #else
65 #define twl_has_keypad()        false
66 #endif
67
68 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
69 #define twl_has_gpio()  true
70 #else
71 #define twl_has_gpio()  false
72 #endif
73
74 #if defined(CONFIG_REGULATOR_TWL4030) \
75         || defined(CONFIG_REGULATOR_TWL4030_MODULE)
76 #define twl_has_regulator()     true
77 #else
78 #define twl_has_regulator()     false
79 #endif
80
81 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
82 #define twl_has_madc()  true
83 #else
84 #define twl_has_madc()  false
85 #endif
86
87 #ifdef CONFIG_TWL4030_POWER
88 #define twl_has_power()        true
89 #else
90 #define twl_has_power()        false
91 #endif
92
93 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
94 #define twl_has_rtc()   true
95 #else
96 #define twl_has_rtc()   false
97 #endif
98
99 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
100         defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
101 #define twl_has_usb()   true
102 #else
103 #define twl_has_usb()   false
104 #endif
105
106 #if defined(CONFIG_TWL4030_WATCHDOG) || \
107         defined(CONFIG_TWL4030_WATCHDOG_MODULE)
108 #define twl_has_watchdog()        true
109 #else
110 #define twl_has_watchdog()        false
111 #endif
112
113 #if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\
114         defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
115 #define twl_has_codec() true
116 #else
117 #define twl_has_codec() false
118 #endif
119
120 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
121 #define twl_has_bci()   true
122 #else
123 #define twl_has_bci()   false
124 #endif
125
126 /* Triton Core internal information (BEGIN) */
127
128 /* Last - for index max*/
129 #define TWL4030_MODULE_LAST             TWL4030_MODULE_SECURED_REG
130
131 #define TWL_NUM_SLAVES          4
132
133 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
134         || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
135 #define twl_has_pwrbutton()     true
136 #else
137 #define twl_has_pwrbutton()     false
138 #endif
139
140 #define SUB_CHIP_ID0 0
141 #define SUB_CHIP_ID1 1
142 #define SUB_CHIP_ID2 2
143 #define SUB_CHIP_ID3 3
144
145 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
146
147 /* Base Address defns for twl4030_map[] */
148
149 /* subchip/slave 0 - USB ID */
150 #define TWL4030_BASEADD_USB             0x0000
151
152 /* subchip/slave 1 - AUD ID */
153 #define TWL4030_BASEADD_AUDIO_VOICE     0x0000
154 #define TWL4030_BASEADD_GPIO            0x0098
155 #define TWL4030_BASEADD_INTBR           0x0085
156 #define TWL4030_BASEADD_PIH             0x0080
157 #define TWL4030_BASEADD_TEST            0x004C
158
159 /* subchip/slave 2 - AUX ID */
160 #define TWL4030_BASEADD_INTERRUPTS      0x00B9
161 #define TWL4030_BASEADD_LED             0x00EE
162 #define TWL4030_BASEADD_MADC            0x0000
163 #define TWL4030_BASEADD_MAIN_CHARGE     0x0074
164 #define TWL4030_BASEADD_PRECHARGE       0x00AA
165 #define TWL4030_BASEADD_PWM0            0x00F8
166 #define TWL4030_BASEADD_PWM1            0x00FB
167 #define TWL4030_BASEADD_PWMA            0x00EF
168 #define TWL4030_BASEADD_PWMB            0x00F1
169 #define TWL4030_BASEADD_KEYPAD          0x00D2
170
171 #define TWL5031_BASEADD_ACCESSORY       0x0074 /* Replaces Main Charge */
172 #define TWL5031_BASEADD_INTERRUPTS      0x00B9 /* Different than TWL4030's
173                                                   one */
174
175 /* subchip/slave 3 - POWER ID */
176 #define TWL4030_BASEADD_BACKUP          0x0014
177 #define TWL4030_BASEADD_INT             0x002E
178 #define TWL4030_BASEADD_PM_MASTER       0x0036
179 #define TWL4030_BASEADD_PM_RECEIVER     0x005B
180 #define TWL4030_BASEADD_RTC             0x001C
181 #define TWL4030_BASEADD_SECURED_REG     0x0000
182
183 /* Triton Core internal information (END) */
184
185
186 /* subchip/slave 0 0x48 - POWER */
187 #define TWL6030_BASEADD_RTC             0x0000
188 #define TWL6030_BASEADD_MEM             0x0017
189 #define TWL6030_BASEADD_PM_MASTER       0x001F
190 #define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
191 #define TWL6030_BASEADD_PM_MISC         0x00E2
192 #define TWL6030_BASEADD_PM_PUPD         0x00F0
193
194 /* subchip/slave 1 0x49 - FEATURE */
195 #define TWL6030_BASEADD_USB             0x0000
196 #define TWL6030_BASEADD_GPADC_CTRL      0x002E
197 #define TWL6030_BASEADD_AUX             0x0090
198 #define TWL6030_BASEADD_PWM             0x00BA
199 #define TWL6030_BASEADD_GASGAUGE        0x00C0
200 #define TWL6030_BASEADD_PIH             0x00D0
201 #define TWL6030_BASEADD_CHARGER         0x00E0
202 #define TWL6025_BASEADD_CHARGER         0x00DA
203
204 /* subchip/slave 2 0x4A - DFT */
205 #define TWL6030_BASEADD_DIEID           0x00C0
206
207 /* subchip/slave 3 0x4B - AUDIO */
208 #define TWL6030_BASEADD_AUDIO           0x0000
209 #define TWL6030_BASEADD_RSV             0x0000
210 #define TWL6030_BASEADD_ZERO            0x0000
211
212 /* Few power values */
213 #define R_CFG_BOOT                      0x05
214
215 /* some fields in R_CFG_BOOT */
216 #define HFCLK_FREQ_19p2_MHZ             (1 << 0)
217 #define HFCLK_FREQ_26_MHZ               (2 << 0)
218 #define HFCLK_FREQ_38p4_MHZ             (3 << 0)
219 #define HIGH_PERF_SQ                    (1 << 3)
220 #define CK32K_LOWPWR_EN                 (1 << 7)
221
222
223 /* chip-specific feature flags, for i2c_device_id.driver_data */
224 #define TWL4030_VAUX2           BIT(0)  /* pre-5030 voltage ranges */
225 #define TPS_SUBSET              BIT(1)  /* tps659[23]0 have fewer LDOs */
226 #define TWL5031                 BIT(2)  /* twl5031 has different registers */
227 #define TWL6030_CLASS           BIT(3)  /* TWL6030 class */
228
229 /*----------------------------------------------------------------------*/
230
231 /* is driver active, bound to a chip? */
232 static bool inuse;
233
234 /* TWL IDCODE Register value */
235 static u32 twl_idcode;
236
237 static unsigned int twl_id;
238 unsigned int twl_rev(void)
239 {
240         return twl_id;
241 }
242 EXPORT_SYMBOL(twl_rev);
243
244 /* Structure for each TWL4030/TWL6030 Slave */
245 struct twl_client {
246         struct i2c_client *client;
247         u8 address;
248
249         /* max numb of i2c_msg required is for read =2 */
250         struct i2c_msg xfer_msg[2];
251
252         /* To lock access to xfer_msg */
253         struct mutex xfer_lock;
254 };
255
256 static struct twl_client twl_modules[TWL_NUM_SLAVES];
257
258
259 /* mapping the module id to slave id and base address */
260 struct twl_mapping {
261         unsigned char sid;      /* Slave ID */
262         unsigned char base;     /* base address */
263 };
264 static struct twl_mapping *twl_map;
265
266 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
267         /*
268          * NOTE:  don't change this table without updating the
269          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
270          * so they continue to match the order in this table.
271          */
272
273         { 0, TWL4030_BASEADD_USB },
274
275         { 1, TWL4030_BASEADD_AUDIO_VOICE },
276         { 1, TWL4030_BASEADD_GPIO },
277         { 1, TWL4030_BASEADD_INTBR },
278         { 1, TWL4030_BASEADD_PIH },
279         { 1, TWL4030_BASEADD_TEST },
280
281         { 2, TWL4030_BASEADD_KEYPAD },
282         { 2, TWL4030_BASEADD_MADC },
283         { 2, TWL4030_BASEADD_INTERRUPTS },
284         { 2, TWL4030_BASEADD_LED },
285         { 2, TWL4030_BASEADD_MAIN_CHARGE },
286         { 2, TWL4030_BASEADD_PRECHARGE },
287         { 2, TWL4030_BASEADD_PWM0 },
288         { 2, TWL4030_BASEADD_PWM1 },
289         { 2, TWL4030_BASEADD_PWMA },
290         { 2, TWL4030_BASEADD_PWMB },
291         { 2, TWL5031_BASEADD_ACCESSORY },
292         { 2, TWL5031_BASEADD_INTERRUPTS },
293
294         { 3, TWL4030_BASEADD_BACKUP },
295         { 3, TWL4030_BASEADD_INT },
296         { 3, TWL4030_BASEADD_PM_MASTER },
297         { 3, TWL4030_BASEADD_PM_RECEIVER },
298         { 3, TWL4030_BASEADD_RTC },
299         { 3, TWL4030_BASEADD_SECURED_REG },
300 };
301
302 static struct twl_mapping twl6030_map[] = {
303         /*
304          * NOTE:  don't change this table without updating the
305          * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
306          * so they continue to match the order in this table.
307          */
308         { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
309         { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
310         { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
311         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
312         { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
313
314         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
315         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
316         { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
317         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
318         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
319
320         { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
321         { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
322         { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
323         { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
324         { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
325
326         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
327         { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
328         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
329         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
330         { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
331         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
332         { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
333
334         { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
335         { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
336         { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
337 };
338
339 /*----------------------------------------------------------------------*/
340
341 /* Exported Functions */
342
343 /**
344  * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
345  * @mod_no: module number
346  * @value: an array of num_bytes+1 containing data to write
347  * @reg: register address (just offset will do)
348  * @num_bytes: number of bytes to transfer
349  *
350  * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
351  * valid data starts at Offset 1.
352  *
353  * Returns the result of operation - 0 is success
354  */
355 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
356 {
357         int ret;
358         int sid;
359         struct twl_client *twl;
360         struct i2c_msg *msg;
361
362         if (unlikely(mod_no > TWL_MODULE_LAST)) {
363                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
364                 return -EPERM;
365         }
366         sid = twl_map[mod_no].sid;
367         twl = &twl_modules[sid];
368
369         if (unlikely(!inuse)) {
370                 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
371                 return -EPERM;
372         }
373         mutex_lock(&twl->xfer_lock);
374         /*
375          * [MSG1]: fill the register address data
376          * fill the data Tx buffer
377          */
378         msg = &twl->xfer_msg[0];
379         msg->addr = twl->address;
380         msg->len = num_bytes + 1;
381         msg->flags = 0;
382         msg->buf = value;
383         /* over write the first byte of buffer with the register address */
384         *value = twl_map[mod_no].base + reg;
385         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
386         mutex_unlock(&twl->xfer_lock);
387
388         /* i2c_transfer returns number of messages transferred */
389         if (ret != 1) {
390                 pr_err("%s: i2c_write failed to transfer all messages\n",
391                         DRIVER_NAME);
392                 if (ret < 0)
393                         return ret;
394                 else
395                         return -EIO;
396         } else {
397                 return 0;
398         }
399 }
400 EXPORT_SYMBOL(twl_i2c_write);
401
402 /**
403  * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
404  * @mod_no: module number
405  * @value: an array of num_bytes containing data to be read
406  * @reg: register address (just offset will do)
407  * @num_bytes: number of bytes to transfer
408  *
409  * Returns result of operation - num_bytes is success else failure.
410  */
411 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
412 {
413         int ret;
414         u8 val;
415         int sid;
416         struct twl_client *twl;
417         struct i2c_msg *msg;
418
419         if (unlikely(mod_no > TWL_MODULE_LAST)) {
420                 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
421                 return -EPERM;
422         }
423         sid = twl_map[mod_no].sid;
424         twl = &twl_modules[sid];
425
426         if (unlikely(!inuse)) {
427                 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
428                 return -EPERM;
429         }
430         mutex_lock(&twl->xfer_lock);
431         /* [MSG1] fill the register address data */
432         msg = &twl->xfer_msg[0];
433         msg->addr = twl->address;
434         msg->len = 1;
435         msg->flags = 0; /* Read the register value */
436         val = twl_map[mod_no].base + reg;
437         msg->buf = &val;
438         /* [MSG2] fill the data rx buffer */
439         msg = &twl->xfer_msg[1];
440         msg->addr = twl->address;
441         msg->flags = I2C_M_RD;  /* Read the register value */
442         msg->len = num_bytes;   /* only n bytes */
443         msg->buf = value;
444         ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
445         mutex_unlock(&twl->xfer_lock);
446
447         /* i2c_transfer returns number of messages transferred */
448         if (ret != 2) {
449                 pr_err("%s: i2c_read failed to transfer all messages\n",
450                         DRIVER_NAME);
451                 if (ret < 0)
452                         return ret;
453                 else
454                         return -EIO;
455         } else {
456                 return 0;
457         }
458 }
459 EXPORT_SYMBOL(twl_i2c_read);
460
461 /**
462  * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
463  * @mod_no: module number
464  * @value: the value to be written 8 bit
465  * @reg: register address (just offset will do)
466  *
467  * Returns result of operation - 0 is success
468  */
469 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
470 {
471
472         /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
473         u8 temp_buffer[2] = { 0 };
474         /* offset 1 contains the data */
475         temp_buffer[1] = value;
476         return twl_i2c_write(mod_no, temp_buffer, reg, 1);
477 }
478 EXPORT_SYMBOL(twl_i2c_write_u8);
479
480 /**
481  * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
482  * @mod_no: module number
483  * @value: the value read 8 bit
484  * @reg: register address (just offset will do)
485  *
486  * Returns result of operation - 0 is success
487  */
488 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
489 {
490         return twl_i2c_read(mod_no, value, reg, 1);
491 }
492 EXPORT_SYMBOL(twl_i2c_read_u8);
493
494 /*----------------------------------------------------------------------*/
495
496 /**
497  * twl_read_idcode_register - API to read the IDCODE register.
498  *
499  * Unlocks the IDCODE register and read the 32 bit value.
500  */
501 static int twl_read_idcode_register(void)
502 {
503         int err;
504
505         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
506                                                 REG_UNLOCK_TEST_REG);
507         if (err) {
508                 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
509                 goto fail;
510         }
511
512         err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
513                                                 REG_IDCODE_7_0, 4);
514         if (err) {
515                 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
516                 goto fail;
517         }
518
519         err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
520         if (err)
521                 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
522 fail:
523         return err;
524 }
525
526 /**
527  * twl_get_type - API to get TWL Si type.
528  *
529  * Api to get the TWL Si type from IDCODE value.
530  */
531 int twl_get_type(void)
532 {
533         return TWL_SIL_TYPE(twl_idcode);
534 }
535 EXPORT_SYMBOL_GPL(twl_get_type);
536
537 /**
538  * twl_get_version - API to get TWL Si version.
539  *
540  * Api to get the TWL Si version from IDCODE value.
541  */
542 int twl_get_version(void)
543 {
544         return TWL_SIL_REV(twl_idcode);
545 }
546 EXPORT_SYMBOL_GPL(twl_get_version);
547
548 static struct device *
549 add_numbered_child(unsigned chip, const char *name, int num,
550                 void *pdata, unsigned pdata_len,
551                 bool can_wakeup, int irq0, int irq1)
552 {
553         struct platform_device  *pdev;
554         struct twl_client       *twl = &twl_modules[chip];
555         int                     status;
556
557         pdev = platform_device_alloc(name, num);
558         if (!pdev) {
559                 dev_dbg(&twl->client->dev, "can't alloc dev\n");
560                 status = -ENOMEM;
561                 goto err;
562         }
563
564         device_init_wakeup(&pdev->dev, can_wakeup);
565         pdev->dev.parent = &twl->client->dev;
566
567         if (pdata) {
568                 status = platform_device_add_data(pdev, pdata, pdata_len);
569                 if (status < 0) {
570                         dev_dbg(&pdev->dev, "can't add platform_data\n");
571                         goto err;
572                 }
573         }
574
575         if (irq0) {
576                 struct resource r[2] = {
577                         { .start = irq0, .flags = IORESOURCE_IRQ, },
578                         { .start = irq1, .flags = IORESOURCE_IRQ, },
579                 };
580
581                 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
582                 if (status < 0) {
583                         dev_dbg(&pdev->dev, "can't add irqs\n");
584                         goto err;
585                 }
586         }
587
588         status = platform_device_add(pdev);
589
590 err:
591         if (status < 0) {
592                 platform_device_put(pdev);
593                 dev_err(&twl->client->dev, "can't add %s dev\n", name);
594                 return ERR_PTR(status);
595         }
596         return &pdev->dev;
597 }
598
599 static inline struct device *add_child(unsigned chip, const char *name,
600                 void *pdata, unsigned pdata_len,
601                 bool can_wakeup, int irq0, int irq1)
602 {
603         return add_numbered_child(chip, name, -1, pdata, pdata_len,
604                 can_wakeup, irq0, irq1);
605 }
606
607 static struct device *
608 add_regulator_linked(int num, struct regulator_init_data *pdata,
609                 struct regulator_consumer_supply *consumers,
610                 unsigned num_consumers, unsigned long features)
611 {
612         unsigned sub_chip_id;
613         /* regulator framework demands init_data ... */
614         if (!pdata)
615                 return NULL;
616
617         if (consumers) {
618                 pdata->consumer_supplies = consumers;
619                 pdata->num_consumer_supplies = num_consumers;
620         }
621
622         pdata->driver_data = (void *)features;
623
624         /* NOTE:  we currently ignore regulator IRQs, e.g. for short circuits */
625         sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
626         return add_numbered_child(sub_chip_id, "twl_reg", num,
627                 pdata, sizeof(*pdata), false, 0, 0);
628 }
629
630 static struct device *
631 add_regulator(int num, struct regulator_init_data *pdata,
632                 unsigned long features)
633 {
634         return add_regulator_linked(num, pdata, NULL, 0, features);
635 }
636
637 /*
638  * NOTE:  We know the first 8 IRQs after pdata->base_irq are
639  * for the PIH, and the next are for the PWR_INT SIH, since
640  * that's how twl_init_irq() sets things up.
641  */
642
643 static int
644 add_children(struct twl4030_platform_data *pdata, unsigned long features)
645 {
646         struct device   *child;
647         unsigned sub_chip_id;
648
649         if (twl_has_gpio() && pdata->gpio) {
650                 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
651                                 pdata->gpio, sizeof(*pdata->gpio),
652                                 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
653                 if (IS_ERR(child))
654                         return PTR_ERR(child);
655         }
656
657         if (twl_has_keypad() && pdata->keypad) {
658                 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
659                                 pdata->keypad, sizeof(*pdata->keypad),
660                                 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
661                 if (IS_ERR(child))
662                         return PTR_ERR(child);
663         }
664
665         if (twl_has_madc() && pdata->madc) {
666                 child = add_child(2, "twl4030_madc",
667                                 pdata->madc, sizeof(*pdata->madc),
668                                 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
669                 if (IS_ERR(child))
670                         return PTR_ERR(child);
671         }
672
673         if (twl_has_rtc()) {
674                 /*
675                  * REVISIT platform_data here currently might expose the
676                  * "msecure" line ... but for now we just expect board
677                  * setup to tell the chip "it's always ok to SET_TIME".
678                  * Eventually, Linux might become more aware of such
679                  * HW security concerns, and "least privilege".
680                  */
681                 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
682                 child = add_child(sub_chip_id, "twl_rtc",
683                                 NULL, 0,
684                                 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
685                 if (IS_ERR(child))
686                         return PTR_ERR(child);
687         }
688
689         if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
690
691                 static struct regulator_consumer_supply usb1v5 = {
692                         .supply =       "usb1v5",
693                 };
694                 static struct regulator_consumer_supply usb1v8 = {
695                         .supply =       "usb1v8",
696                 };
697                 static struct regulator_consumer_supply usb3v1 = {
698                         .supply =       "usb3v1",
699                 };
700
701         /* First add the regulators so that they can be used by transceiver */
702                 if (twl_has_regulator()) {
703                         /* this is a template that gets copied */
704                         struct regulator_init_data usb_fixed = {
705                                 .constraints.valid_modes_mask =
706                                         REGULATOR_MODE_NORMAL
707                                         | REGULATOR_MODE_STANDBY,
708                                 .constraints.valid_ops_mask =
709                                         REGULATOR_CHANGE_MODE
710                                         | REGULATOR_CHANGE_STATUS,
711                         };
712
713                         child = add_regulator_linked(TWL4030_REG_VUSB1V5,
714                                                       &usb_fixed, &usb1v5, 1,
715                                                       features);
716                         if (IS_ERR(child))
717                                 return PTR_ERR(child);
718
719                         child = add_regulator_linked(TWL4030_REG_VUSB1V8,
720                                                       &usb_fixed, &usb1v8, 1,
721                                                       features);
722                         if (IS_ERR(child))
723                                 return PTR_ERR(child);
724
725                         child = add_regulator_linked(TWL4030_REG_VUSB3V1,
726                                                       &usb_fixed, &usb3v1, 1,
727                                                       features);
728                         if (IS_ERR(child))
729                                 return PTR_ERR(child);
730
731                 }
732
733                 child = add_child(0, "twl4030_usb",
734                                 pdata->usb, sizeof(*pdata->usb),
735                                 true,
736                                 /* irq0 = USB_PRES, irq1 = USB */
737                                 pdata->irq_base + USB_PRES_INTR_OFFSET,
738                                 pdata->irq_base + USB_INTR_OFFSET);
739
740                 if (IS_ERR(child))
741                         return PTR_ERR(child);
742
743                 /* we need to connect regulators to this transceiver */
744                 if (twl_has_regulator() && child) {
745                         usb1v5.dev = child;
746                         usb1v8.dev = child;
747                         usb3v1.dev = child;
748                 }
749         }
750         if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
751
752                 static struct regulator_consumer_supply usb3v3;
753                 int regulator;
754
755                 if (twl_has_regulator()) {
756                         /* this is a template that gets copied */
757                         struct regulator_init_data usb_fixed = {
758                                 .constraints.valid_modes_mask =
759                                         REGULATOR_MODE_NORMAL
760                                         | REGULATOR_MODE_STANDBY,
761                                 .constraints.valid_ops_mask =
762                                         REGULATOR_CHANGE_MODE
763                                         | REGULATOR_CHANGE_STATUS,
764                         };
765
766                         if (features & TWL6025_SUBCLASS) {
767                                 usb3v3.supply = "ldousb";
768                                 regulator = TWL6025_REG_LDOUSB;
769                         } else {
770                                 usb3v3.supply = "vusb";
771                                 regulator = TWL6030_REG_VUSB;
772                         }
773                         child = add_regulator_linked(regulator, &usb_fixed,
774                                                         &usb3v3, 1,
775                                                         features);
776                         if (IS_ERR(child))
777                                 return PTR_ERR(child);
778                 }
779
780                 pdata->usb->features = features;
781
782                 child = add_child(0, "twl6030_usb",
783                         pdata->usb, sizeof(*pdata->usb),
784                         true,
785                         /* irq1 = VBUS_PRES, irq0 = USB ID */
786                         pdata->irq_base + USBOTG_INTR_OFFSET,
787                         pdata->irq_base + USB_PRES_INTR_OFFSET);
788
789                 if (IS_ERR(child))
790                         return PTR_ERR(child);
791                 /* we need to connect regulators to this transceiver */
792                 if (twl_has_regulator() && child)
793                         usb3v3.dev = child;
794         } else if (twl_has_regulator() && twl_class_is_6030()) {
795                 if (features & TWL6025_SUBCLASS)
796                         child = add_regulator(TWL6025_REG_LDOUSB,
797                                                 pdata->ldousb, features);
798                 else
799                         child = add_regulator(TWL6030_REG_VUSB,
800                                                 pdata->vusb, features);
801
802                         if (IS_ERR(child))
803                                         return PTR_ERR(child);
804         }
805
806         if (twl_has_watchdog() && twl_class_is_4030()) {
807                 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
808                 if (IS_ERR(child))
809                         return PTR_ERR(child);
810         }
811
812         if (twl_has_pwrbutton() && twl_class_is_4030()) {
813                 child = add_child(1, "twl4030_pwrbutton",
814                                 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
815                 if (IS_ERR(child))
816                         return PTR_ERR(child);
817         }
818
819         if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
820                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
821                 child = add_child(sub_chip_id, "twl4030-audio",
822                                 pdata->audio, sizeof(*pdata->audio),
823                                 false, 0, 0);
824                 if (IS_ERR(child))
825                         return PTR_ERR(child);
826         }
827
828         if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
829                 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
830                 child = add_child(sub_chip_id, "twl6040",
831                                 pdata->audio, sizeof(*pdata->audio),
832                                 false, 0, 0);
833                 if (IS_ERR(child))
834                         return PTR_ERR(child);
835         }
836
837         /* twl4030 regulators */
838         if (twl_has_regulator() && twl_class_is_4030()) {
839                 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
840                                         features);
841                 if (IS_ERR(child))
842                         return PTR_ERR(child);
843
844                 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
845                                         features);
846                 if (IS_ERR(child))
847                         return PTR_ERR(child);
848
849                 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
850                                         features);
851                 if (IS_ERR(child))
852                         return PTR_ERR(child);
853
854                 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
855                                         features);
856                 if (IS_ERR(child))
857                         return PTR_ERR(child);
858
859                 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
860                                         features);
861                 if (IS_ERR(child))
862                         return PTR_ERR(child);
863
864                 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
865                                         features);
866                 if (IS_ERR(child))
867                         return PTR_ERR(child);
868
869                 child = add_regulator((features & TWL4030_VAUX2)
870                                         ? TWL4030_REG_VAUX2_4030
871                                         : TWL4030_REG_VAUX2,
872                                 pdata->vaux2, features);
873                 if (IS_ERR(child))
874                         return PTR_ERR(child);
875
876                 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
877                                         features);
878                 if (IS_ERR(child))
879                         return PTR_ERR(child);
880
881                 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
882                                         features);
883                 if (IS_ERR(child))
884                         return PTR_ERR(child);
885
886                 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
887                                         features);
888                 if (IS_ERR(child))
889                         return PTR_ERR(child);
890         }
891
892         /* maybe add LDOs that are omitted on cost-reduced parts */
893         if (twl_has_regulator() && !(features & TPS_SUBSET)
894           && twl_class_is_4030()) {
895                 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
896                                         features);
897                 if (IS_ERR(child))
898                         return PTR_ERR(child);
899
900                 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
901                                         features);
902                 if (IS_ERR(child))
903                         return PTR_ERR(child);
904
905                 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
906                                         features);
907                 if (IS_ERR(child))
908                         return PTR_ERR(child);
909
910                 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
911                                         features);
912                 if (IS_ERR(child))
913                         return PTR_ERR(child);
914
915                 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
916                                         features);
917                 if (IS_ERR(child))
918                         return PTR_ERR(child);
919
920                 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
921                                         features);
922                 if (IS_ERR(child))
923                         return PTR_ERR(child);
924         }
925
926         /* twl6030 regulators */
927         if (twl_has_regulator() && twl_class_is_6030() &&
928                         !(features & TWL6025_SUBCLASS)) {
929                 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
930                                         features);
931                 if (IS_ERR(child))
932                         return PTR_ERR(child);
933
934                 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
935                                         features);
936                 if (IS_ERR(child))
937                         return PTR_ERR(child);
938
939                 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
940                                         features);
941                 if (IS_ERR(child))
942                         return PTR_ERR(child);
943
944                 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
945                                         features);
946                 if (IS_ERR(child))
947                         return PTR_ERR(child);
948
949                 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
950                                         features);
951                 if (IS_ERR(child))
952                         return PTR_ERR(child);
953
954                 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
955                                         features);
956                 if (IS_ERR(child))
957                         return PTR_ERR(child);
958
959                 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
960                                         features);
961                 if (IS_ERR(child))
962                         return PTR_ERR(child);
963
964                 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
965                                         features);
966                 if (IS_ERR(child))
967                         return PTR_ERR(child);
968
969                 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
970                                         features);
971                 if (IS_ERR(child))
972                         return PTR_ERR(child);
973         }
974
975         /* 6030 and 6025 share this regulator */
976         if (twl_has_regulator() && twl_class_is_6030()) {
977                 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
978                                         features);
979                 if (IS_ERR(child))
980                         return PTR_ERR(child);
981         }
982
983         /* twl6025 regulators */
984         if (twl_has_regulator() && twl_class_is_6030() &&
985                         (features & TWL6025_SUBCLASS)) {
986                 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
987                                         features);
988                 if (IS_ERR(child))
989                         return PTR_ERR(child);
990
991                 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
992                                         features);
993                 if (IS_ERR(child))
994                         return PTR_ERR(child);
995
996                 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
997                                         features);
998                 if (IS_ERR(child))
999                         return PTR_ERR(child);
1000
1001                 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1002                                         features);
1003                 if (IS_ERR(child))
1004                         return PTR_ERR(child);
1005
1006                 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1007                                         features);
1008                 if (IS_ERR(child))
1009                         return PTR_ERR(child);
1010
1011                 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1012                                         features);
1013                 if (IS_ERR(child))
1014                         return PTR_ERR(child);
1015
1016                 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1017                                         features);
1018                 if (IS_ERR(child))
1019                         return PTR_ERR(child);
1020
1021                 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1022                                         features);
1023                 if (IS_ERR(child))
1024                         return PTR_ERR(child);
1025
1026                 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1027                                         features);
1028                 if (IS_ERR(child))
1029                         return PTR_ERR(child);
1030
1031                 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1032                                         features);
1033                 if (IS_ERR(child))
1034                         return PTR_ERR(child);
1035
1036                 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1037                                         features);
1038                 if (IS_ERR(child))
1039                         return PTR_ERR(child);
1040
1041         }
1042
1043         if (twl_has_bci() && pdata->bci &&
1044                         !(features & (TPS_SUBSET | TWL5031))) {
1045                 child = add_child(3, "twl4030_bci",
1046                                 pdata->bci, sizeof(*pdata->bci), false,
1047                                 /* irq0 = CHG_PRES, irq1 = BCI */
1048                                 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1049                                 pdata->irq_base + BCI_INTR_OFFSET);
1050                 if (IS_ERR(child))
1051                         return PTR_ERR(child);
1052         }
1053
1054         return 0;
1055 }
1056
1057 /*----------------------------------------------------------------------*/
1058
1059 /*
1060  * These three functions initialize the on-chip clock framework,
1061  * letting it generate the right frequencies for USB, MADC, and
1062  * other purposes.
1063  */
1064 static inline int __init protect_pm_master(void)
1065 {
1066         int e = 0;
1067
1068         e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1069                         TWL4030_PM_MASTER_PROTECT_KEY);
1070         return e;
1071 }
1072
1073 static inline int __init unprotect_pm_master(void)
1074 {
1075         int e = 0;
1076
1077         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1078                         TWL4030_PM_MASTER_KEY_CFG1,
1079                         TWL4030_PM_MASTER_PROTECT_KEY);
1080         e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1081                         TWL4030_PM_MASTER_KEY_CFG2,
1082                         TWL4030_PM_MASTER_PROTECT_KEY);
1083
1084         return e;
1085 }
1086
1087 static void clocks_init(struct device *dev,
1088                         struct twl4030_clock_init_data *clock)
1089 {
1090         int e = 0;
1091         struct clk *osc;
1092         u32 rate;
1093         u8 ctrl = HFCLK_FREQ_26_MHZ;
1094
1095 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1096         if (cpu_is_omap2430())
1097                 osc = clk_get(dev, "osc_ck");
1098         else
1099                 osc = clk_get(dev, "osc_sys_ck");
1100
1101         if (IS_ERR(osc)) {
1102                 printk(KERN_WARNING "Skipping twl internal clock init and "
1103                                 "using bootloader value (unknown osc rate)\n");
1104                 return;
1105         }
1106
1107         rate = clk_get_rate(osc);
1108         clk_put(osc);
1109
1110 #else
1111         /* REVISIT for non-OMAP systems, pass the clock rate from
1112          * board init code, using platform_data.
1113          */
1114         osc = ERR_PTR(-EIO);
1115
1116         printk(KERN_WARNING "Skipping twl internal clock init and "
1117                "using bootloader value (unknown osc rate)\n");
1118
1119         return;
1120 #endif
1121
1122         switch (rate) {
1123         case 19200000:
1124                 ctrl = HFCLK_FREQ_19p2_MHZ;
1125                 break;
1126         case 26000000:
1127                 ctrl = HFCLK_FREQ_26_MHZ;
1128                 break;
1129         case 38400000:
1130                 ctrl = HFCLK_FREQ_38p4_MHZ;
1131                 break;
1132         }
1133
1134         ctrl |= HIGH_PERF_SQ;
1135         if (clock && clock->ck32k_lowpwr_enable)
1136                 ctrl |= CK32K_LOWPWR_EN;
1137
1138         e |= unprotect_pm_master();
1139         /* effect->MADC+USB ck en */
1140         e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1141         e |= protect_pm_master();
1142
1143         if (e < 0)
1144                 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1145 }
1146
1147 /*----------------------------------------------------------------------*/
1148
1149 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1150 int twl4030_exit_irq(void);
1151 int twl4030_init_chip_irq(const char *chip);
1152 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1153 int twl6030_exit_irq(void);
1154
1155 static int twl_remove(struct i2c_client *client)
1156 {
1157         unsigned i;
1158         int status;
1159
1160         if (twl_class_is_4030())
1161                 status = twl4030_exit_irq();
1162         else
1163                 status = twl6030_exit_irq();
1164
1165         if (status < 0)
1166                 return status;
1167
1168         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1169                 struct twl_client       *twl = &twl_modules[i];
1170
1171                 if (twl->client && twl->client != client)
1172                         i2c_unregister_device(twl->client);
1173                 twl_modules[i].client = NULL;
1174         }
1175         inuse = false;
1176         return 0;
1177 }
1178
1179 /* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
1180 static int __devinit
1181 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1182 {
1183         int                             status;
1184         unsigned                        i;
1185         struct twl4030_platform_data    *pdata = client->dev.platform_data;
1186         u8 temp;
1187         int ret = 0;
1188
1189         if (!pdata) {
1190                 dev_dbg(&client->dev, "no platform data?\n");
1191                 return -EINVAL;
1192         }
1193
1194         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1195                 dev_dbg(&client->dev, "can't talk I2C?\n");
1196                 return -EIO;
1197         }
1198
1199         if (inuse) {
1200                 dev_dbg(&client->dev, "driver is already in use\n");
1201                 return -EBUSY;
1202         }
1203
1204         for (i = 0; i < TWL_NUM_SLAVES; i++) {
1205                 struct twl_client       *twl = &twl_modules[i];
1206
1207                 twl->address = client->addr + i;
1208                 if (i == 0)
1209                         twl->client = client;
1210                 else {
1211                         twl->client = i2c_new_dummy(client->adapter,
1212                                         twl->address);
1213                         if (!twl->client) {
1214                                 dev_err(&client->dev,
1215                                         "can't attach client %d\n", i);
1216                                 status = -ENOMEM;
1217                                 goto fail;
1218                         }
1219                 }
1220                 mutex_init(&twl->xfer_lock);
1221         }
1222         inuse = true;
1223         if ((id->driver_data) & TWL6030_CLASS) {
1224                 twl_id = TWL6030_CLASS_ID;
1225                 twl_map = &twl6030_map[0];
1226         } else {
1227                 twl_id = TWL4030_CLASS_ID;
1228                 twl_map = &twl4030_map[0];
1229         }
1230
1231         /* setup clock framework */
1232         clocks_init(&client->dev, pdata->clock);
1233
1234         /* read TWL IDCODE Register */
1235         if (twl_id == TWL4030_CLASS_ID) {
1236                 ret = twl_read_idcode_register();
1237                 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1238         }
1239
1240         /* load power event scripts */
1241         if (twl_has_power() && pdata->power)
1242                 twl4030_power_init(pdata->power);
1243
1244         /* Maybe init the T2 Interrupt subsystem */
1245         if (client->irq
1246                         && pdata->irq_base
1247                         && pdata->irq_end > pdata->irq_base) {
1248                 if (twl_class_is_4030()) {
1249                         twl4030_init_chip_irq(id->name);
1250                         status = twl4030_init_irq(client->irq, pdata->irq_base,
1251                         pdata->irq_end);
1252                 } else {
1253                         status = twl6030_init_irq(client->irq, pdata->irq_base,
1254                         pdata->irq_end);
1255                 }
1256
1257                 if (status < 0)
1258                         goto fail;
1259         }
1260
1261         /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1262          * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1263          * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1264          */
1265
1266         if (twl_class_is_4030()) {
1267                 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1268                 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1269                 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1270                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1271         }
1272
1273         status = add_children(pdata, id->driver_data);
1274 fail:
1275         if (status < 0)
1276                 twl_remove(client);
1277         return status;
1278 }
1279
1280 static const struct i2c_device_id twl_ids[] = {
1281         { "twl4030", TWL4030_VAUX2 },   /* "Triton 2" */
1282         { "twl5030", 0 },               /* T2 updated */
1283         { "twl5031", TWL5031 },         /* TWL5030 updated */
1284         { "tps65950", 0 },              /* catalog version of twl5030 */
1285         { "tps65930", TPS_SUBSET },     /* fewer LDOs and DACs; no charger */
1286         { "tps65920", TPS_SUBSET },     /* fewer LDOs; no codec or charger */
1287         { "tps65921", TPS_SUBSET },     /* fewer LDOs; no codec, no LED
1288                                            and vibrator. Charger in USB module*/
1289         { "twl6030", TWL6030_CLASS },   /* "Phoenix power chip" */
1290         { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1291         { /* end of list */ },
1292 };
1293 MODULE_DEVICE_TABLE(i2c, twl_ids);
1294
1295 /* One Client Driver , 4 Clients */
1296 static struct i2c_driver twl_driver = {
1297         .driver.name    = DRIVER_NAME,
1298         .id_table       = twl_ids,
1299         .probe          = twl_probe,
1300         .remove         = twl_remove,
1301 };
1302
1303 static int __init twl_init(void)
1304 {
1305         return i2c_add_driver(&twl_driver);
1306 }
1307 subsys_initcall(twl_init);
1308
1309 static void __exit twl_exit(void)
1310 {
1311         i2c_del_driver(&twl_driver);
1312 }
1313 module_exit(twl_exit);
1314
1315 MODULE_AUTHOR("Texas Instruments, Inc.");
1316 MODULE_DESCRIPTION("I2C Core interface for TWL");
1317 MODULE_LICENSE("GPL");