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mfd: Copy the device pointer to the twl4030-madc structure
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / mfd / twl-core.c
blobf82413a98895d5d98ac0218cf1119cbac53fbedb
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/platform_device.h>
34 #include <linux/clk.h>
35 #include <linux/err.h>
36
37 #include <linux/regulator/machine.h>
38
39 #include <linux/i2c.h>
40 #include <linux/i2c/twl.h>
41
42 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
43 #include <plat/cpu.h>
44 #endif
45
46 /*
47 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
48 * Management and System Companion Device" chips originally designed for
49 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
50 * often at around 3 Mbit/sec, including for interrupt handling.
51 *
52 * This driver core provides genirq support for the interrupts emitted,
53 * by the various modules, and exports register access primitives.
54 *
55 * FIXME this driver currently requires use of the first interrupt line
56 * (and associated registers).
57 */
58
59 #define DRIVER_NAME "twl"
60
61 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
62 #define twl_has_keypad() true
63 #else
64 #define twl_has_keypad() false
65 #endif
66
67 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
68 #define twl_has_gpio() true
69 #else
70 #define twl_has_gpio() false
71 #endif
72
73 #if defined(CONFIG_REGULATOR_TWL4030) \
74 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
75 #define twl_has_regulator() true
76 #else
77 #define twl_has_regulator() false
78 #endif
79
80 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
81 #define twl_has_madc() true
82 #else
83 #define twl_has_madc() false
84 #endif
85
86 #ifdef CONFIG_TWL4030_POWER
87 #define twl_has_power() true
88 #else
89 #define twl_has_power() false
90 #endif
91
92 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
93 #define twl_has_rtc() true
94 #else
95 #define twl_has_rtc() false
96 #endif
97
98 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
99 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
100 #define twl_has_usb() true
101 #else
102 #define twl_has_usb() false
103 #endif
104
105 #if defined(CONFIG_TWL4030_WATCHDOG) || \
106 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
107 #define twl_has_watchdog() true
108 #else
109 #define twl_has_watchdog() false
110 #endif
111
112 #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\
113 defined(CONFIG_SND_SOC_TWL6040) || defined(CONFIG_SND_SOC_TWL6040_MODULE)
114 #define twl_has_codec() true
115 #else
116 #define twl_has_codec() false
117 #endif
118
119 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
120 #define twl_has_bci() true
121 #else
122 #define twl_has_bci() false
123 #endif
124
125 /* Triton Core internal information (BEGIN) */
126
127 /* Last - for index max*/
128 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
129
130 #define TWL_NUM_SLAVES 4
131
132 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
133 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
134 #define twl_has_pwrbutton() true
135 #else
136 #define twl_has_pwrbutton() false
137 #endif
138
139 #define SUB_CHIP_ID0 0
140 #define SUB_CHIP_ID1 1
141 #define SUB_CHIP_ID2 2
142 #define SUB_CHIP_ID3 3
143
144 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
145
146 /* Base Address defns for twl4030_map[] */
147
148 /* subchip/slave 0 - USB ID */
149 #define TWL4030_BASEADD_USB 0x0000
150
151 /* subchip/slave 1 - AUD ID */
152 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
153 #define TWL4030_BASEADD_GPIO 0x0098
154 #define TWL4030_BASEADD_INTBR 0x0085
155 #define TWL4030_BASEADD_PIH 0x0080
156 #define TWL4030_BASEADD_TEST 0x004C
157
158 /* subchip/slave 2 - AUX ID */
159 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
160 #define TWL4030_BASEADD_LED 0x00EE
161 #define TWL4030_BASEADD_MADC 0x0000
162 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
163 #define TWL4030_BASEADD_PRECHARGE 0x00AA
164 #define TWL4030_BASEADD_PWM0 0x00F8
165 #define TWL4030_BASEADD_PWM1 0x00FB
166 #define TWL4030_BASEADD_PWMA 0x00EF
167 #define TWL4030_BASEADD_PWMB 0x00F1
168 #define TWL4030_BASEADD_KEYPAD 0x00D2
169
170 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
171 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
172 one */
173
174 /* subchip/slave 3 - POWER ID */
175 #define TWL4030_BASEADD_BACKUP 0x0014
176 #define TWL4030_BASEADD_INT 0x002E
177 #define TWL4030_BASEADD_PM_MASTER 0x0036
178 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
179 #define TWL4030_BASEADD_RTC 0x001C
180 #define TWL4030_BASEADD_SECURED_REG 0x0000
181
182 /* Triton Core internal information (END) */
183
184
185 /* subchip/slave 0 0x48 - POWER */
186 #define TWL6030_BASEADD_RTC 0x0000
187 #define TWL6030_BASEADD_MEM 0x0017
188 #define TWL6030_BASEADD_PM_MASTER 0x001F
189 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
190 #define TWL6030_BASEADD_PM_MISC 0x00E2
191 #define TWL6030_BASEADD_PM_PUPD 0x00F0
192
193 /* subchip/slave 1 0x49 - FEATURE */
194 #define TWL6030_BASEADD_USB 0x0000
195 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
196 #define TWL6030_BASEADD_AUX 0x0090
197 #define TWL6030_BASEADD_PWM 0x00BA
198 #define TWL6030_BASEADD_GASGAUGE 0x00C0
199 #define TWL6030_BASEADD_PIH 0x00D0
200 #define TWL6030_BASEADD_CHARGER 0x00E0
201 #define TWL6025_BASEADD_CHARGER 0x00DA
202
203 /* subchip/slave 2 0x4A - DFT */
204 #define TWL6030_BASEADD_DIEID 0x00C0
205
206 /* subchip/slave 3 0x4B - AUDIO */
207 #define TWL6030_BASEADD_AUDIO 0x0000
208 #define TWL6030_BASEADD_RSV 0x0000
209 #define TWL6030_BASEADD_ZERO 0x0000
210
211 /* Few power values */
212 #define R_CFG_BOOT 0x05
213
214 /* some fields in R_CFG_BOOT */
215 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
216 #define HFCLK_FREQ_26_MHZ (2 << 0)
217 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
218 #define HIGH_PERF_SQ (1 << 3)
219 #define CK32K_LOWPWR_EN (1 << 7)
220
221
222 /* chip-specific feature flags, for i2c_device_id.driver_data */
223 #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
224 #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
225 #define TWL5031 BIT(2) /* twl5031 has different registers */
226 #define TWL6030_CLASS BIT(3) /* TWL6030 class */
227
228 /*----------------------------------------------------------------------*/
229
230 /* is driver active, bound to a chip? */
231 static bool inuse;
232
233 /* TWL IDCODE Register value */
234 static u32 twl_idcode;
235
236 static unsigned int twl_id;
237 unsigned int twl_rev(void)
238 {
239 return twl_id;
240 }
241 EXPORT_SYMBOL(twl_rev);
242
243 /* Structure for each TWL4030/TWL6030 Slave */
244 struct twl_client {
245 struct i2c_client *client;
246 u8 address;
247
248 /* max numb of i2c_msg required is for read =2 */
249 struct i2c_msg xfer_msg[2];
250
251 /* To lock access to xfer_msg */
252 struct mutex xfer_lock;
253 };
254
255 static struct twl_client twl_modules[TWL_NUM_SLAVES];
256
257
258 /* mapping the module id to slave id and base address */
259 struct twl_mapping {
260 unsigned char sid; /* Slave ID */
261 unsigned char base; /* base address */
262 };
263 static struct twl_mapping *twl_map;
264
265 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
266 /*
267 * NOTE: don't change this table without updating the
268 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
269 * so they continue to match the order in this table.
270 */
271
272 { 0, TWL4030_BASEADD_USB },
273
274 { 1, TWL4030_BASEADD_AUDIO_VOICE },
275 { 1, TWL4030_BASEADD_GPIO },
276 { 1, TWL4030_BASEADD_INTBR },
277 { 1, TWL4030_BASEADD_PIH },
278 { 1, TWL4030_BASEADD_TEST },
279
280 { 2, TWL4030_BASEADD_KEYPAD },
281 { 2, TWL4030_BASEADD_MADC },
282 { 2, TWL4030_BASEADD_INTERRUPTS },
283 { 2, TWL4030_BASEADD_LED },
284 { 2, TWL4030_BASEADD_MAIN_CHARGE },
285 { 2, TWL4030_BASEADD_PRECHARGE },
286 { 2, TWL4030_BASEADD_PWM0 },
287 { 2, TWL4030_BASEADD_PWM1 },
288 { 2, TWL4030_BASEADD_PWMA },
289 { 2, TWL4030_BASEADD_PWMB },
290 { 2, TWL5031_BASEADD_ACCESSORY },
291 { 2, TWL5031_BASEADD_INTERRUPTS },
292
293 { 3, TWL4030_BASEADD_BACKUP },
294 { 3, TWL4030_BASEADD_INT },
295 { 3, TWL4030_BASEADD_PM_MASTER },
296 { 3, TWL4030_BASEADD_PM_RECEIVER },
297 { 3, TWL4030_BASEADD_RTC },
298 { 3, TWL4030_BASEADD_SECURED_REG },
299 };
300
301 static struct twl_mapping twl6030_map[] = {
302 /*
303 * NOTE: don't change this table without updating the
304 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
305 * so they continue to match the order in this table.
306 */
307 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
308 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
309 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
310 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
311 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
312
313 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
314 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
315 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
316 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
317 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
318
319 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
320 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
321 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
322 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
323 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
324
325 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
326 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
327 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
328 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
329 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
330 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
331 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
332
333 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
334 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
335 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
336 };
337
338 /*----------------------------------------------------------------------*/
339
340 /* Exported Functions */
341
342 /**
343 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
344 * @mod_no: module number
345 * @value: an array of num_bytes+1 containing data to write
346 * @reg: register address (just offset will do)
347 * @num_bytes: number of bytes to transfer
348 *
349 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
350 * valid data starts at Offset 1.
351 *
352 * Returns the result of operation - 0 is success
353 */
354 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
355 {
356 int ret;
357 int sid;
358 struct twl_client *twl;
359 struct i2c_msg *msg;
360
361 if (unlikely(mod_no > TWL_MODULE_LAST)) {
362 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
363 return -EPERM;
364 }
365 if (unlikely(!inuse)) {
366 pr_err("%s: not initialized\n", DRIVER_NAME);
367 return -EPERM;
368 }
369 sid = twl_map[mod_no].sid;
370 twl = &twl_modules[sid];
371
372 mutex_lock(&twl->xfer_lock);
373 /*
374 * [MSG1]: fill the register address data
375 * fill the data Tx buffer
376 */
377 msg = &twl->xfer_msg[0];
378 msg->addr = twl->address;
379 msg->len = num_bytes + 1;
380 msg->flags = 0;
381 msg->buf = value;
382 /* over write the first byte of buffer with the register address */
383 *value = twl_map[mod_no].base + reg;
384 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
385 mutex_unlock(&twl->xfer_lock);
386
387 /* i2c_transfer returns number of messages transferred */
388 if (ret != 1) {
389 pr_err("%s: i2c_write failed to transfer all messages\n",
390 DRIVER_NAME);
391 if (ret < 0)
392 return ret;
393 else
394 return -EIO;
395 } else {
396 return 0;
397 }
398 }
399 EXPORT_SYMBOL(twl_i2c_write);
400
401 /**
402 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
403 * @mod_no: module number
404 * @value: an array of num_bytes containing data to be read
405 * @reg: register address (just offset will do)
406 * @num_bytes: number of bytes to transfer
407 *
408 * Returns result of operation - num_bytes is success else failure.
409 */
410 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
411 {
412 int ret;
413 u8 val;
414 int sid;
415 struct twl_client *twl;
416 struct i2c_msg *msg;
417
418 if (unlikely(mod_no > TWL_MODULE_LAST)) {
419 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
420 return -EPERM;
421 }
422 if (unlikely(!inuse)) {
423 pr_err("%s: not initialized\n", DRIVER_NAME);
424 return -EPERM;
425 }
426 sid = twl_map[mod_no].sid;
427 twl = &twl_modules[sid];
428
429 mutex_lock(&twl->xfer_lock);
430 /* [MSG1] fill the register address data */
431 msg = &twl->xfer_msg[0];
432 msg->addr = twl->address;
433 msg->len = 1;
434 msg->flags = 0; /* Read the register value */
435 val = twl_map[mod_no].base + reg;
436 msg->buf = &val;
437 /* [MSG2] fill the data rx buffer */
438 msg = &twl->xfer_msg[1];
439 msg->addr = twl->address;
440 msg->flags = I2C_M_RD; /* Read the register value */
441 msg->len = num_bytes; /* only n bytes */
442 msg->buf = value;
443 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
444 mutex_unlock(&twl->xfer_lock);
445
446 /* i2c_transfer returns number of messages transferred */
447 if (ret != 2) {
448 pr_err("%s: i2c_read failed to transfer all messages\n",
449 DRIVER_NAME);
450 if (ret < 0)
451 return ret;
452 else
453 return -EIO;
454 } else {
455 return 0;
456 }
457 }
458 EXPORT_SYMBOL(twl_i2c_read);
459
460 /**
461 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
462 * @mod_no: module number
463 * @value: the value to be written 8 bit
464 * @reg: register address (just offset will do)
465 *
466 * Returns result of operation - 0 is success
467 */
468 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
469 {
470
471 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
472 u8 temp_buffer[2] = { 0 };
473 /* offset 1 contains the data */
474 temp_buffer[1] = value;
475 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
476 }
477 EXPORT_SYMBOL(twl_i2c_write_u8);
478
479 /**
480 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
481 * @mod_no: module number
482 * @value: the value read 8 bit
483 * @reg: register address (just offset will do)
484 *
485 * Returns result of operation - 0 is success
486 */
487 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
488 {
489 return twl_i2c_read(mod_no, value, reg, 1);
490 }
491 EXPORT_SYMBOL(twl_i2c_read_u8);
492
493 /*----------------------------------------------------------------------*/
494
495 /**
496 * twl_read_idcode_register - API to read the IDCODE register.
497 *
498 * Unlocks the IDCODE register and read the 32 bit value.
499 */
500 static int twl_read_idcode_register(void)
501 {
502 int err;
503
504 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
505 REG_UNLOCK_TEST_REG);
506 if (err) {
507 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
508 goto fail;
509 }
510
511 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
512 REG_IDCODE_7_0, 4);
513 if (err) {
514 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
515 goto fail;
516 }
517
518 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
519 if (err)
520 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
521 fail:
522 return err;
523 }
524
525 /**
526 * twl_get_type - API to get TWL Si type.
527 *
528 * Api to get the TWL Si type from IDCODE value.
529 */
530 int twl_get_type(void)
531 {
532 return TWL_SIL_TYPE(twl_idcode);
533 }
534 EXPORT_SYMBOL_GPL(twl_get_type);
535
536 /**
537 * twl_get_version - API to get TWL Si version.
538 *
539 * Api to get the TWL Si version from IDCODE value.
540 */
541 int twl_get_version(void)
542 {
543 return TWL_SIL_REV(twl_idcode);
544 }
545 EXPORT_SYMBOL_GPL(twl_get_version);
546
547 static struct device *
548 add_numbered_child(unsigned chip, const char *name, int num,
549 void *pdata, unsigned pdata_len,
550 bool can_wakeup, int irq0, int irq1)
551 {
552 struct platform_device *pdev;
553 struct twl_client *twl = &twl_modules[chip];
554 int status;
555
556 pdev = platform_device_alloc(name, num);
557 if (!pdev) {
558 dev_dbg(&twl->client->dev, "can't alloc dev\n");
559 status = -ENOMEM;
560 goto err;
561 }
562
563 device_init_wakeup(&pdev->dev, can_wakeup);
564 pdev->dev.parent = &twl->client->dev;
565
566 if (pdata) {
567 status = platform_device_add_data(pdev, pdata, pdata_len);
568 if (status < 0) {
569 dev_dbg(&pdev->dev, "can't add platform_data\n");
570 goto err;
571 }
572 }
573
574 if (irq0) {
575 struct resource r[2] = {
576 { .start = irq0, .flags = IORESOURCE_IRQ, },
577 { .start = irq1, .flags = IORESOURCE_IRQ, },
578 };
579
580 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
581 if (status < 0) {
582 dev_dbg(&pdev->dev, "can't add irqs\n");
583 goto err;
584 }
585 }
586
587 status = platform_device_add(pdev);
588
589 err:
590 if (status < 0) {
591 platform_device_put(pdev);
592 dev_err(&twl->client->dev, "can't add %s dev\n", name);
593 return ERR_PTR(status);
594 }
595 return &pdev->dev;
596 }
597
598 static inline struct device *add_child(unsigned chip, const char *name,
599 void *pdata, unsigned pdata_len,
600 bool can_wakeup, int irq0, int irq1)
601 {
602 return add_numbered_child(chip, name, -1, pdata, pdata_len,
603 can_wakeup, irq0, irq1);
604 }
605
606 static struct device *
607 add_regulator_linked(int num, struct regulator_init_data *pdata,
608 struct regulator_consumer_supply *consumers,
609 unsigned num_consumers, unsigned long features)
610 {
611 unsigned sub_chip_id;
612 /* regulator framework demands init_data ... */
613 if (!pdata)
614 return NULL;
615
616 if (consumers) {
617 pdata->consumer_supplies = consumers;
618 pdata->num_consumer_supplies = num_consumers;
619 }
620
621 pdata->driver_data = (void *)features;
622
623 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
624 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
625 return add_numbered_child(sub_chip_id, "twl_reg", num,
626 pdata, sizeof(*pdata), false, 0, 0);
627 }
628
629 static struct device *
630 add_regulator(int num, struct regulator_init_data *pdata,
631 unsigned long features)
632 {
633 return add_regulator_linked(num, pdata, NULL, 0, features);
634 }
635
636 /*
637 * NOTE: We know the first 8 IRQs after pdata->base_irq are
638 * for the PIH, and the next are for the PWR_INT SIH, since
639 * that's how twl_init_irq() sets things up.
640 */
641
642 static int
643 add_children(struct twl4030_platform_data *pdata, unsigned long features)
644 {
645 struct device *child;
646 unsigned sub_chip_id;
647
648 if (twl_has_gpio() && pdata->gpio) {
649 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
650 pdata->gpio, sizeof(*pdata->gpio),
651 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
652 if (IS_ERR(child))
653 return PTR_ERR(child);
654 }
655
656 if (twl_has_keypad() && pdata->keypad) {
657 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
658 pdata->keypad, sizeof(*pdata->keypad),
659 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
660 if (IS_ERR(child))
661 return PTR_ERR(child);
662 }
663
664 if (twl_has_madc() && pdata->madc) {
665 child = add_child(2, "twl4030_madc",
666 pdata->madc, sizeof(*pdata->madc),
667 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
668 if (IS_ERR(child))
669 return PTR_ERR(child);
670 }
671
672 if (twl_has_rtc()) {
673 /*
674 * REVISIT platform_data here currently might expose the
675 * "msecure" line ... but for now we just expect board
676 * setup to tell the chip "it's always ok to SET_TIME".
677 * Eventually, Linux might become more aware of such
678 * HW security concerns, and "least privilege".
679 */
680 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
681 child = add_child(sub_chip_id, "twl_rtc",
682 NULL, 0,
683 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
684 if (IS_ERR(child))
685 return PTR_ERR(child);
686 }
687
688 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
689
690 static struct regulator_consumer_supply usb1v5 = {
691 .supply = "usb1v5",
692 };
693 static struct regulator_consumer_supply usb1v8 = {
694 .supply = "usb1v8",
695 };
696 static struct regulator_consumer_supply usb3v1 = {
697 .supply = "usb3v1",
698 };
699
700 /* First add the regulators so that they can be used by transceiver */
701 if (twl_has_regulator()) {
702 /* this is a template that gets copied */
703 struct regulator_init_data usb_fixed = {
704 .constraints.valid_modes_mask =
705 REGULATOR_MODE_NORMAL
706 | REGULATOR_MODE_STANDBY,
707 .constraints.valid_ops_mask =
708 REGULATOR_CHANGE_MODE
709 | REGULATOR_CHANGE_STATUS,
710 };
711
712 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
713 &usb_fixed, &usb1v5, 1,
714 features);
715 if (IS_ERR(child))
716 return PTR_ERR(child);
717
718 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
719 &usb_fixed, &usb1v8, 1,
720 features);
721 if (IS_ERR(child))
722 return PTR_ERR(child);
723
724 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
725 &usb_fixed, &usb3v1, 1,
726 features);
727 if (IS_ERR(child))
728 return PTR_ERR(child);
729
730 }
731
732 child = add_child(0, "twl4030_usb",
733 pdata->usb, sizeof(*pdata->usb),
734 true,
735 /* irq0 = USB_PRES, irq1 = USB */
736 pdata->irq_base + USB_PRES_INTR_OFFSET,
737 pdata->irq_base + USB_INTR_OFFSET);
738
739 if (IS_ERR(child))
740 return PTR_ERR(child);
741
742 /* we need to connect regulators to this transceiver */
743 if (twl_has_regulator() && child) {
744 usb1v5.dev = child;
745 usb1v8.dev = child;
746 usb3v1.dev = child;
747 }
748 }
749 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
750
751 static struct regulator_consumer_supply usb3v3;
752 int regulator;
753
754 if (twl_has_regulator()) {
755 /* this is a template that gets copied */
756 struct regulator_init_data usb_fixed = {
757 .constraints.valid_modes_mask =
758 REGULATOR_MODE_NORMAL
759 | REGULATOR_MODE_STANDBY,
760 .constraints.valid_ops_mask =
761 REGULATOR_CHANGE_MODE
762 | REGULATOR_CHANGE_STATUS,
763 };
764
765 if (features & TWL6025_SUBCLASS) {
766 usb3v3.supply = "ldousb";
767 regulator = TWL6025_REG_LDOUSB;
768 } else {
769 usb3v3.supply = "vusb";
770 regulator = TWL6030_REG_VUSB;
771 }
772 child = add_regulator_linked(regulator, &usb_fixed,
773 &usb3v3, 1,
774 features);
775 if (IS_ERR(child))
776 return PTR_ERR(child);
777 }
778
779 pdata->usb->features = features;
780
781 child = add_child(0, "twl6030_usb",
782 pdata->usb, sizeof(*pdata->usb),
783 true,
784 /* irq1 = VBUS_PRES, irq0 = USB ID */
785 pdata->irq_base + USBOTG_INTR_OFFSET,
786 pdata->irq_base + USB_PRES_INTR_OFFSET);
787
788 if (IS_ERR(child))
789 return PTR_ERR(child);
790 /* we need to connect regulators to this transceiver */
791 if (twl_has_regulator() && child)
792 usb3v3.dev = child;
793 } else if (twl_has_regulator() && twl_class_is_6030()) {
794 if (features & TWL6025_SUBCLASS)
795 child = add_regulator(TWL6025_REG_LDOUSB,
796 pdata->ldousb, features);
797 else
798 child = add_regulator(TWL6030_REG_VUSB,
799 pdata->vusb, features);
800
801 if (IS_ERR(child))
802 return PTR_ERR(child);
803 }
804
805 if (twl_has_watchdog() && twl_class_is_4030()) {
806 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
807 if (IS_ERR(child))
808 return PTR_ERR(child);
809 }
810
811 if (twl_has_pwrbutton() && twl_class_is_4030()) {
812 child = add_child(1, "twl4030_pwrbutton",
813 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
814 if (IS_ERR(child))
815 return PTR_ERR(child);
816 }
817
818 if (twl_has_codec() && pdata->codec && twl_class_is_4030()) {
819 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
820 child = add_child(sub_chip_id, "twl4030-audio",
821 pdata->codec, sizeof(*pdata->codec),
822 false, 0, 0);
823 if (IS_ERR(child))
824 return PTR_ERR(child);
825 }
826
827 /* Phoenix codec driver is probed directly atm */
828 if (twl_has_codec() && pdata->codec && twl_class_is_6030()) {
829 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
830 child = add_child(sub_chip_id, "twl6040-codec",
831 pdata->codec, sizeof(*pdata->codec),
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 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1288 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1289 { /* end of list */ },
1290 };
1291 MODULE_DEVICE_TABLE(i2c, twl_ids);
1292
1293 /* One Client Driver , 4 Clients */
1294 static struct i2c_driver twl_driver = {
1295 .driver.name = DRIVER_NAME,
1296 .id_table = twl_ids,
1297 .probe = twl_probe,
1298 .remove = twl_remove,
1299 };
1300
1301 static int __init twl_init(void)
1302 {
1303 return i2c_add_driver(&twl_driver);
1304 }
1305 subsys_initcall(twl_init);
1306
1307 static void __exit twl_exit(void)
1308 {
1309 i2c_del_driver(&twl_driver);
1310 }
1311 module_exit(twl_exit);
1312
1313 MODULE_AUTHOR("Texas Instruments, Inc.");
1314 MODULE_DESCRIPTION("I2C Core interface for TWL");
1315 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree