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jbd: Issue cache flush after checkpointing
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / mfd / twl-core.c
blob61e70cfaa774fb977adcba8cc697a06edd673210
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 if (unlikely(!inuse)) {
367 pr_err("%s: not initialized\n", DRIVER_NAME);
368 return -EPERM;
369 }
370 sid = twl_map[mod_no].sid;
371 twl = &twl_modules[sid];
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 if (unlikely(!inuse)) {
424 pr_err("%s: not initialized\n", DRIVER_NAME);
425 return -EPERM;
426 }
427 sid = twl_map[mod_no].sid;
428 twl = &twl_modules[sid];
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");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree