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ARM: cpu topology: Add debugfs interface for cpu_power
[cmplus.git] / drivers / mfd / twl-core.c
blob953189c743ed338c3133c829d8859a0f5b1c1249
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 #if defined(CONFIG_TWL4030_POWER) || defined(CONFIG_TWL6030_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 #define TWL6030_MODULE_LAST TWL6030_MODULE_SLAVE_RES
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 TWL6030_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_SLAVE_RES 0x00AD
192 #define TWL6030_BASEADD_PM_MISC 0x00E2
193 #define TWL6030_BASEADD_PM_PUPD 0x00F0
194
195 /* subchip/slave 1 0x49 - FEATURE */
196 #define TWL6030_BASEADD_USB 0x0000
197 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
198 #define TWL6030_BASEADD_AUX 0x0090
199 #define TWL6030_BASEADD_PWM 0x00BA
200 #define TWL6030_BASEADD_GASGAUGE 0x00C0
201 #define TWL6030_BASEADD_PIH 0x00D0
202 #define TWL6030_BASEADD_CHARGER 0x00E0
203 #define TWL6025_BASEADD_CHARGER 0x00DA
204
205 /* subchip/slave 2 0x4A - DFT */
206 #define TWL6030_BASEADD_DIEID 0x00C0
207
208 /* subchip/slave 3 0x4B - AUDIO */
209 #define TWL6030_BASEADD_AUDIO 0x0000
210 #define TWL6030_BASEADD_RSV 0x0000
211 #define TWL6030_BASEADD_ZERO 0x0000
212
213 /* Few power values */
214 #define R_CFG_BOOT 0x05
215
216 /* some fields in R_CFG_BOOT */
217 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
218 #define HFCLK_FREQ_26_MHZ (2 << 0)
219 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
220 #define HIGH_PERF_SQ (1 << 3)
221 #define CK32K_LOWPWR_EN (1 << 7)
222
223
224 /* chip-specific feature flags, for i2c_device_id.driver_data */
225 #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
226 #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
227 #define TWL5031 BIT(2) /* twl5031 has different registers */
228 #define TWL6030_CLASS BIT(3) /* TWL6030 class */
229
230 /*----------------------------------------------------------------------*/
231
232 /* is driver active, bound to a chip? */
233 static bool inuse;
234
235 /* TWL IDCODE Register value */
236 static u32 twl_idcode;
237
238 static unsigned int twl_id;
239 unsigned int twl_rev(void)
240 {
241 return twl_id;
242 }
243 EXPORT_SYMBOL(twl_rev);
244
245 /* Structure for each TWL4030/TWL6030 Slave */
246 struct twl_client {
247 struct i2c_client *client;
248 u8 address;
249
250 /* max numb of i2c_msg required is for read =2 */
251 struct i2c_msg xfer_msg[2];
252
253 /* To lock access to xfer_msg */
254 struct mutex xfer_lock;
255 };
256
257 static struct twl_client twl_modules[TWL_NUM_SLAVES];
258
259
260 /* mapping the module id to slave id and base address */
261 struct twl_mapping {
262 unsigned char sid; /* Slave ID */
263 unsigned char base; /* base address */
264 };
265 static struct twl_mapping *twl_map;
266
267 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
268 /*
269 * NOTE: don't change this table without updating the
270 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
271 * so they continue to match the order in this table.
272 */
273
274 { 0, TWL4030_BASEADD_USB },
275
276 { 1, TWL4030_BASEADD_AUDIO_VOICE },
277 { 1, TWL4030_BASEADD_GPIO },
278 { 1, TWL4030_BASEADD_INTBR },
279 { 1, TWL4030_BASEADD_PIH },
280 { 1, TWL4030_BASEADD_TEST },
281
282 { 2, TWL4030_BASEADD_KEYPAD },
283 { 2, TWL4030_BASEADD_MADC },
284 { 2, TWL4030_BASEADD_INTERRUPTS },
285 { 2, TWL4030_BASEADD_LED },
286 { 2, TWL4030_BASEADD_MAIN_CHARGE },
287 { 2, TWL4030_BASEADD_PRECHARGE },
288 { 2, TWL4030_BASEADD_PWM0 },
289 { 2, TWL4030_BASEADD_PWM1 },
290 { 2, TWL4030_BASEADD_PWMA },
291 { 2, TWL4030_BASEADD_PWMB },
292 { 2, TWL5031_BASEADD_ACCESSORY },
293 { 2, TWL5031_BASEADD_INTERRUPTS },
294
295 { 3, TWL4030_BASEADD_BACKUP },
296 { 3, TWL4030_BASEADD_INT },
297 { 3, TWL4030_BASEADD_PM_MASTER },
298 { 3, TWL4030_BASEADD_PM_RECEIVER },
299 { 3, TWL4030_BASEADD_RTC },
300 { 3, TWL4030_BASEADD_SECURED_REG },
301 };
302
303 static struct twl_mapping twl6030_map[] = {
304 /*
305 * NOTE: don't change this table without updating the
306 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
307 * so they continue to match the order in this table.
308 */
309 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
310 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
311 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
312 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
313 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
314
315 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
316 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
317 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
318 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
319 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
320
321 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
322 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
323 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
324 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
325 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
326
327 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
328 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
329 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
330 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
331 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
332 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
333 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
334
335 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
336 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
337 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
338 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_RES },
339 };
340
341 /*----------------------------------------------------------------------*/
342
343 /* Exported Functions */
344
345 /**
346 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
347 * @mod_no: module number
348 * @value: an array of num_bytes+1 containing data to write
349 * @reg: register address (just offset will do)
350 * @num_bytes: number of bytes to transfer
351 *
352 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
353 * valid data starts at Offset 1.
354 *
355 * Returns the result of operation - 0 is success
356 */
357 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
358 {
359 int ret;
360 int sid;
361 struct twl_client *twl;
362 struct i2c_msg *msg;
363
364 if (unlikely(mod_no > TWL_MODULE_LAST)) {
365 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
366 return -EPERM;
367 }
368 if (unlikely(!inuse)) {
369 pr_err("%s: not initialized\n", DRIVER_NAME);
370 return -EPERM;
371 }
372 sid = twl_map[mod_no].sid;
373 twl = &twl_modules[sid];
374
375 mutex_lock(&twl->xfer_lock);
376 /*
377 * [MSG1]: fill the register address data
378 * fill the data Tx buffer
379 */
380 msg = &twl->xfer_msg[0];
381 msg->addr = twl->address;
382 msg->len = num_bytes + 1;
383 msg->flags = 0;
384 msg->buf = value;
385 /* over write the first byte of buffer with the register address */
386 *value = twl_map[mod_no].base + reg;
387 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
388 mutex_unlock(&twl->xfer_lock);
389
390 /* i2c_transfer returns number of messages transferred */
391 if (ret != 1) {
392 pr_err("%s: i2c_write failed to transfer all messages "
393 "(addr 0x%04x, reg %d, len %d)\n",
394 DRIVER_NAME, twl->address, reg, msg->len);
395 if (ret < 0)
396 return ret;
397 else
398 return -EIO;
399 } else {
400 return 0;
401 }
402 }
403 EXPORT_SYMBOL(twl_i2c_write);
404
405 /**
406 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
407 * @mod_no: module number
408 * @value: an array of num_bytes containing data to be read
409 * @reg: register address (just offset will do)
410 * @num_bytes: number of bytes to transfer
411 *
412 * Returns result of operation - num_bytes is success else failure.
413 */
414 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
415 {
416 int ret;
417 u8 val;
418 int sid;
419 struct twl_client *twl;
420 struct i2c_msg *msg;
421
422 if (unlikely(mod_no > TWL_MODULE_LAST)) {
423 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
424 return -EPERM;
425 }
426 if (unlikely(!inuse)) {
427 pr_err("%s: not initialized\n", DRIVER_NAME);
428 return -EPERM;
429 }
430 sid = twl_map[mod_no].sid;
431 twl = &twl_modules[sid];
432
433 mutex_lock(&twl->xfer_lock);
434 /* [MSG1] fill the register address data */
435 msg = &twl->xfer_msg[0];
436 msg->addr = twl->address;
437 msg->len = 1;
438 msg->flags = 0; /* Read the register value */
439 val = twl_map[mod_no].base + reg;
440 msg->buf = &val;
441 /* [MSG2] fill the data rx buffer */
442 msg = &twl->xfer_msg[1];
443 msg->addr = twl->address;
444 msg->flags = I2C_M_RD; /* Read the register value */
445 msg->len = num_bytes; /* only n bytes */
446 msg->buf = value;
447 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
448 mutex_unlock(&twl->xfer_lock);
449
450 /* i2c_transfer returns number of messages transferred */
451 if (ret != 2) {
452 pr_err("%s: i2c_read failed to transfer all messages "
453 "(addr 0x%04x, reg %d, len %d)\n",
454 DRIVER_NAME, twl->address, reg, msg->len);
455 if (ret < 0)
456 return ret;
457 else
458 return -EIO;
459 } else {
460 return 0;
461 }
462 }
463 EXPORT_SYMBOL(twl_i2c_read);
464
465 /**
466 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
467 * @mod_no: module number
468 * @value: the value to be written 8 bit
469 * @reg: register address (just offset will do)
470 *
471 * Returns result of operation - 0 is success
472 */
473 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
474 {
475
476 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
477 u8 temp_buffer[2] = { 0 };
478 /* offset 1 contains the data */
479 temp_buffer[1] = value;
480 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
481 }
482 EXPORT_SYMBOL(twl_i2c_write_u8);
483
484 /**
485 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
486 * @mod_no: module number
487 * @value: the value read 8 bit
488 * @reg: register address (just offset will do)
489 *
490 * Returns result of operation - 0 is success
491 */
492 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
493 {
494 return twl_i2c_read(mod_no, value, reg, 1);
495 }
496 EXPORT_SYMBOL(twl_i2c_read_u8);
497
498 /*----------------------------------------------------------------------*/
499
500 /**
501 * twl_read_idcode_register - API to read the IDCODE register.
502 *
503 * Unlocks the IDCODE register and read the 32 bit value.
504 */
505 static int twl_read_idcode_register(void)
506 {
507 int err;
508
509 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
510 REG_UNLOCK_TEST_REG);
511 if (err) {
512 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
513 goto fail;
514 }
515
516 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
517 REG_IDCODE_7_0, 4);
518 if (err) {
519 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
520 goto fail;
521 }
522
523 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
524 if (err)
525 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
526 fail:
527 return err;
528 }
529
530 /**
531 * twl_get_type - API to get TWL Si type.
532 *
533 * Api to get the TWL Si type from IDCODE value.
534 */
535 int twl_get_type(void)
536 {
537 return TWL_SIL_TYPE(twl_idcode);
538 }
539 EXPORT_SYMBOL_GPL(twl_get_type);
540
541 /**
542 * twl_get_version - API to get TWL Si version.
543 *
544 * Api to get the TWL Si version from IDCODE value.
545 */
546 int twl_get_version(void)
547 {
548 return TWL_SIL_REV(twl_idcode);
549 }
550 EXPORT_SYMBOL_GPL(twl_get_version);
551
552 static struct device *
553 add_numbered_child(unsigned chip, const char *name, int num,
554 void *pdata, unsigned pdata_len,
555 bool can_wakeup, int irq0, int irq1)
556 {
557 struct platform_device *pdev;
558 struct twl_client *twl = &twl_modules[chip];
559 int status;
560
561 pdev = platform_device_alloc(name, num);
562 if (!pdev) {
563 dev_dbg(&twl->client->dev, "can't alloc dev\n");
564 status = -ENOMEM;
565 goto err;
566 }
567
568 device_init_wakeup(&pdev->dev, can_wakeup);
569 pdev->dev.parent = &twl->client->dev;
570
571 if (pdata) {
572 status = platform_device_add_data(pdev, pdata, pdata_len);
573 if (status < 0) {
574 dev_dbg(&pdev->dev, "can't add platform_data\n");
575 goto err;
576 }
577 }
578
579 if (irq0) {
580 struct resource r[2] = {
581 { .start = irq0, .flags = IORESOURCE_IRQ, },
582 { .start = irq1, .flags = IORESOURCE_IRQ, },
583 };
584
585 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
586 if (status < 0) {
587 dev_dbg(&pdev->dev, "can't add irqs\n");
588 goto err;
589 }
590 }
591
592 status = platform_device_add(pdev);
593
594 err:
595 if (status < 0) {
596 platform_device_put(pdev);
597 dev_err(&twl->client->dev, "can't add %s dev\n", name);
598 return ERR_PTR(status);
599 }
600 return &pdev->dev;
601 }
602
603 static inline struct device *add_child(unsigned chip, const char *name,
604 void *pdata, unsigned pdata_len,
605 bool can_wakeup, int irq0, int irq1)
606 {
607 return add_numbered_child(chip, name, -1, pdata, pdata_len,
608 can_wakeup, irq0, irq1);
609 }
610
611 static struct device *
612 add_regulator_linked(int num, struct regulator_init_data *pdata,
613 struct regulator_consumer_supply *consumers,
614 unsigned num_consumers, unsigned long features)
615 {
616 unsigned sub_chip_id;
617 /* regulator framework demands init_data ... */
618 if (!pdata)
619 return NULL;
620
621 if (consumers) {
622 pdata->consumer_supplies = consumers;
623 pdata->num_consumer_supplies = num_consumers;
624 }
625
626 pdata->driver_data = (void *)features;
627
628 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
629 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
630 return add_numbered_child(sub_chip_id, "twl_reg", num,
631 pdata, sizeof(*pdata), false, 0, 0);
632 }
633
634 static struct device *
635 add_regulator(int num, struct regulator_init_data *pdata,
636 unsigned long features)
637 {
638 return add_regulator_linked(num, pdata, NULL, 0, features);
639 }
640
641 /*
642 * NOTE: We know the first 8 IRQs after pdata->base_irq are
643 * for the PIH, and the next are for the PWR_INT SIH, since
644 * that's how twl_init_irq() sets things up.
645 */
646
647 static int
648 add_children(struct twl4030_platform_data *pdata, unsigned long features)
649 {
650 struct device *child;
651 unsigned sub_chip_id;
652
653 if (twl_has_gpio() && pdata->gpio) {
654 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
655 pdata->gpio, sizeof(*pdata->gpio),
656 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
657 if (IS_ERR(child))
658 return PTR_ERR(child);
659 }
660
661 if (twl_has_keypad() && pdata->keypad) {
662 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
663 pdata->keypad, sizeof(*pdata->keypad),
664 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
665 if (IS_ERR(child))
666 return PTR_ERR(child);
667 }
668
669 if (twl_has_madc() && pdata->madc) {
670 child = add_child(2, "twl4030_madc",
671 pdata->madc, sizeof(*pdata->madc),
672 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
673 if (IS_ERR(child))
674 return PTR_ERR(child);
675 }
676
677 if (twl_has_rtc()) {
678 /*
679 * REVISIT platform_data here currently might expose the
680 * "msecure" line ... but for now we just expect board
681 * setup to tell the chip "it's always ok to SET_TIME".
682 * Eventually, Linux might become more aware of such
683 * HW security concerns, and "least privilege".
684 */
685 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
686 child = add_child(sub_chip_id, "twl_rtc",
687 NULL, 0,
688 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
689 if (IS_ERR(child))
690 return PTR_ERR(child);
691 }
692
693 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
694
695 static struct regulator_consumer_supply usb1v5 = {
696 .supply = "usb1v5",
697 };
698 static struct regulator_consumer_supply usb1v8 = {
699 .supply = "usb1v8",
700 };
701 static struct regulator_consumer_supply usb3v1 = {
702 .supply = "usb3v1",
703 };
704
705 /* First add the regulators so that they can be used by transceiver */
706 if (twl_has_regulator()) {
707 /* this is a template that gets copied */
708 struct regulator_init_data usb_fixed = {
709 .constraints.valid_modes_mask =
710 REGULATOR_MODE_NORMAL
711 | REGULATOR_MODE_STANDBY,
712 .constraints.valid_ops_mask =
713 REGULATOR_CHANGE_MODE
714 | REGULATOR_CHANGE_STATUS,
715 };
716
717 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
718 &usb_fixed, &usb1v5, 1,
719 features);
720 if (IS_ERR(child))
721 return PTR_ERR(child);
722
723 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
724 &usb_fixed, &usb1v8, 1,
725 features);
726 if (IS_ERR(child))
727 return PTR_ERR(child);
728
729 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
730 &usb_fixed, &usb3v1, 1,
731 features);
732 if (IS_ERR(child))
733 return PTR_ERR(child);
734
735 }
736
737 child = add_child(0, "twl4030_usb",
738 pdata->usb, sizeof(*pdata->usb),
739 true,
740 /* irq0 = USB_PRES, irq1 = USB */
741 pdata->irq_base + USB_PRES_INTR_OFFSET,
742 pdata->irq_base + USB_INTR_OFFSET);
743
744 if (IS_ERR(child))
745 return PTR_ERR(child);
746
747 /* we need to connect regulators to this transceiver */
748 if (twl_has_regulator() && child) {
749 usb1v5.dev = child;
750 usb1v8.dev = child;
751 usb3v1.dev = child;
752 }
753 }
754 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
755
756 static struct regulator_consumer_supply usb3v3;
757 int regulator;
758
759 if (twl_has_regulator()) {
760 /* this is a template that gets copied */
761 struct regulator_init_data usb_fixed = {
762 .constraints.valid_modes_mask =
763 REGULATOR_MODE_NORMAL
764 | REGULATOR_MODE_STANDBY,
765 .constraints.valid_ops_mask =
766 REGULATOR_CHANGE_MODE
767 | REGULATOR_CHANGE_STATUS,
768 };
769
770 if (features & TWL6025_SUBCLASS) {
771 usb3v3.supply = "ldousb";
772 regulator = TWL6025_REG_LDOUSB;
773 } else {
774 usb3v3.supply = "vusb";
775 regulator = TWL6030_REG_VUSB;
776 }
777 child = add_regulator_linked(regulator, &usb_fixed,
778 &usb3v3, 1,
779 features);
780 if (IS_ERR(child))
781 return PTR_ERR(child);
782 }
783
784 pdata->usb->features = features;
785
786 child = add_child(0, "twl6030_usb",
787 pdata->usb, sizeof(*pdata->usb),
788 true,
789 /* irq1 = VBUS_PRES, irq0 = USB ID */
790 pdata->irq_base + USBOTG_INTR_OFFSET,
791 pdata->irq_base + USB_PRES_INTR_OFFSET);
792
793 if (IS_ERR(child))
794 return PTR_ERR(child);
795 /* we need to connect regulators to this transceiver */
796 if (twl_has_regulator() && child)
797 usb3v3.dev = child;
798 } else if (twl_has_regulator() && twl_class_is_6030()) {
799 if (features & TWL6025_SUBCLASS)
800 child = add_regulator(TWL6025_REG_LDOUSB,
801 pdata->ldousb, features);
802 else
803 child = add_regulator(TWL6030_REG_VUSB,
804 pdata->vusb, features);
805
806 if (IS_ERR(child))
807 return PTR_ERR(child);
808 }
809
810 if (twl_has_watchdog() && twl_class_is_4030()) {
811 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
812 if (IS_ERR(child))
813 return PTR_ERR(child);
814 }
815
816 if (twl_has_pwrbutton() && twl_class_is_4030()) {
817 child = add_child(1, "twl4030_pwrbutton",
818 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
819 if (IS_ERR(child))
820 return PTR_ERR(child);
821 }
822
823 if (twl_has_codec() && pdata->codec && twl_class_is_4030()) {
824 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
825 child = add_child(sub_chip_id, "twl4030-audio",
826 pdata->codec, sizeof(*pdata->codec),
827 false, 0, 0);
828 if (IS_ERR(child))
829 return PTR_ERR(child);
830 }
831
832 /* Phoenix codec driver is probed directly atm */
833 if (twl_has_codec() && pdata->codec && twl_class_is_6030()) {
834 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
835 child = add_child(sub_chip_id, "twl6040-audio",
836 pdata->codec, sizeof(*pdata->codec),
837 false, 0, 0);
838 if (IS_ERR(child))
839 return PTR_ERR(child);
840 }
841
842 /* twl4030 regulators */
843 if (twl_has_regulator() && twl_class_is_4030()) {
844 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
845 features);
846 if (IS_ERR(child))
847 return PTR_ERR(child);
848
849 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
850 features);
851 if (IS_ERR(child))
852 return PTR_ERR(child);
853
854 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
855 features);
856 if (IS_ERR(child))
857 return PTR_ERR(child);
858
859 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
860 features);
861 if (IS_ERR(child))
862 return PTR_ERR(child);
863
864 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
865 features);
866 if (IS_ERR(child))
867 return PTR_ERR(child);
868
869 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
870 features);
871 if (IS_ERR(child))
872 return PTR_ERR(child);
873
874 child = add_regulator((features & TWL4030_VAUX2)
875 ? TWL4030_REG_VAUX2_4030
876 : TWL4030_REG_VAUX2,
877 pdata->vaux2, features);
878 if (IS_ERR(child))
879 return PTR_ERR(child);
880
881 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
882 features);
883 if (IS_ERR(child))
884 return PTR_ERR(child);
885
886 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
887 features);
888 if (IS_ERR(child))
889 return PTR_ERR(child);
890
891 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
892 features);
893 if (IS_ERR(child))
894 return PTR_ERR(child);
895 }
896
897 /* maybe add LDOs that are omitted on cost-reduced parts */
898 if (twl_has_regulator() && !(features & TPS_SUBSET)
899 && twl_class_is_4030()) {
900 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
901 features);
902 if (IS_ERR(child))
903 return PTR_ERR(child);
904
905 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
906 features);
907 if (IS_ERR(child))
908 return PTR_ERR(child);
909
910 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
911 features);
912 if (IS_ERR(child))
913 return PTR_ERR(child);
914
915 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
916 features);
917 if (IS_ERR(child))
918 return PTR_ERR(child);
919
920 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
921 features);
922 if (IS_ERR(child))
923 return PTR_ERR(child);
924
925 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
926 features);
927 if (IS_ERR(child))
928 return PTR_ERR(child);
929 }
930
931 /* twl6030 regulators */
932 if (twl_has_regulator() && twl_class_is_6030() &&
933 !(features & TWL6025_SUBCLASS)) {
934 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
935 features);
936 if (IS_ERR(child))
937 return PTR_ERR(child);
938
939 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
940 features);
941 if (IS_ERR(child))
942 return PTR_ERR(child);
943
944 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
945 features);
946 if (IS_ERR(child))
947 return PTR_ERR(child);
948
949 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
950 features);
951 if (IS_ERR(child))
952 return PTR_ERR(child);
953
954 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
955 features);
956 if (IS_ERR(child))
957 return PTR_ERR(child);
958
959 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
960 features);
961 if (IS_ERR(child))
962 return PTR_ERR(child);
963
964 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
965 features);
966 if (IS_ERR(child))
967 return PTR_ERR(child);
968
969 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
970 features);
971 if (IS_ERR(child))
972 return PTR_ERR(child);
973
974 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
975 features);
976 if (IS_ERR(child))
977 return PTR_ERR(child);
978
979 child = add_regulator(TWL6030_REG_CLK32KAUDIO,
980 pdata->clk32kaudio, features);
981 if (IS_ERR(child))
982 return PTR_ERR(child);
983
984 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
985 features);
986 if (IS_ERR(child))
987 return PTR_ERR(child);
988
989 child = add_regulator(TWL6030_REG_VMEM, pdata->vmem,
990 features);
991 if (IS_ERR(child))
992 return PTR_ERR(child);
993
994 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
995 features);
996 if (IS_ERR(child))
997 return PTR_ERR(child);
998 }
999
1000 /* 6030 and 6025 share this regulator */
1001 if (twl_has_regulator() && twl_class_is_6030()) {
1002 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
1003 features);
1004 if (IS_ERR(child))
1005 return PTR_ERR(child);
1006 }
1007
1008 /* twl6025 regulators */
1009 if (twl_has_regulator() && twl_class_is_6030() &&
1010 (features & TWL6025_SUBCLASS)) {
1011 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
1012 features);
1013 if (IS_ERR(child))
1014 return PTR_ERR(child);
1015
1016 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1017 features);
1018 if (IS_ERR(child))
1019 return PTR_ERR(child);
1020
1021 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1022 features);
1023 if (IS_ERR(child))
1024 return PTR_ERR(child);
1025
1026 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1027 features);
1028 if (IS_ERR(child))
1029 return PTR_ERR(child);
1030
1031 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1032 features);
1033 if (IS_ERR(child))
1034 return PTR_ERR(child);
1035
1036 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1037 features);
1038 if (IS_ERR(child))
1039 return PTR_ERR(child);
1040
1041 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1042 features);
1043 if (IS_ERR(child))
1044 return PTR_ERR(child);
1045
1046 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1047 features);
1048 if (IS_ERR(child))
1049 return PTR_ERR(child);
1050
1051 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1052 features);
1053 if (IS_ERR(child))
1054 return PTR_ERR(child);
1055
1056 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1057 features);
1058 if (IS_ERR(child))
1059 return PTR_ERR(child);
1060
1061 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1062 features);
1063 if (IS_ERR(child))
1064 return PTR_ERR(child);
1065
1066 }
1067
1068 if (twl_has_bci() && pdata->bci &&
1069 !(features & (TPS_SUBSET | TWL5031))) {
1070 child = add_child(3, "twl4030_bci",
1071 pdata->bci, sizeof(*pdata->bci), false,
1072 /* irq0 = CHG_PRES, irq1 = BCI */
1073 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1074 pdata->irq_base + BCI_INTR_OFFSET);
1075 if (IS_ERR(child))
1076 return PTR_ERR(child);
1077 }
1078
1079 return 0;
1080 }
1081
1082 /*----------------------------------------------------------------------*/
1083
1084 /*
1085 * These three functions initialize the on-chip clock framework,
1086 * letting it generate the right frequencies for USB, MADC, and
1087 * other purposes.
1088 */
1089 static inline int __init protect_pm_master(void)
1090 {
1091 int e = 0;
1092
1093 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1094 TWL4030_PM_MASTER_PROTECT_KEY);
1095 return e;
1096 }
1097
1098 static inline int __init unprotect_pm_master(void)
1099 {
1100 int e = 0;
1101
1102 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1103 TWL4030_PM_MASTER_KEY_CFG1,
1104 TWL4030_PM_MASTER_PROTECT_KEY);
1105 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1106 TWL4030_PM_MASTER_KEY_CFG2,
1107 TWL4030_PM_MASTER_PROTECT_KEY);
1108
1109 return e;
1110 }
1111
1112 static void clocks_init(struct device *dev,
1113 struct twl4030_clock_init_data *clock)
1114 {
1115 int e = 0;
1116 struct clk *osc;
1117 u32 rate;
1118 u8 ctrl = HFCLK_FREQ_26_MHZ;
1119
1120 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1121 if (cpu_is_omap2430())
1122 osc = clk_get(dev, "osc_ck");
1123 else
1124 osc = clk_get(dev, "osc_sys_ck");
1125
1126 if (IS_ERR(osc)) {
1127 printk(KERN_WARNING "Skipping twl internal clock init and "
1128 "using bootloader value (unknown osc rate)\n");
1129 return;
1130 }
1131
1132 rate = clk_get_rate(osc);
1133 clk_put(osc);
1134
1135 #else
1136 /* REVISIT for non-OMAP systems, pass the clock rate from
1137 * board init code, using platform_data.
1138 */
1139 osc = ERR_PTR(-EIO);
1140
1141 printk(KERN_WARNING "Skipping twl internal clock init and "
1142 "using bootloader value (unknown osc rate)\n");
1143
1144 return;
1145 #endif
1146
1147 switch (rate) {
1148 case 19200000:
1149 ctrl = HFCLK_FREQ_19p2_MHZ;
1150 break;
1151 case 26000000:
1152 ctrl = HFCLK_FREQ_26_MHZ;
1153 break;
1154 case 38400000:
1155 ctrl = HFCLK_FREQ_38p4_MHZ;
1156 break;
1157 }
1158
1159 ctrl |= HIGH_PERF_SQ;
1160 if (clock && clock->ck32k_lowpwr_enable)
1161 ctrl |= CK32K_LOWPWR_EN;
1162
1163 e |= unprotect_pm_master();
1164 /* effect->MADC+USB ck en */
1165 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1166 e |= protect_pm_master();
1167
1168 if (e < 0)
1169 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1170 }
1171
1172 /*----------------------------------------------------------------------*/
1173
1174 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1175 int twl4030_exit_irq(void);
1176 int twl4030_init_chip_irq(const char *chip);
1177 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1178 int twl6030_exit_irq(void);
1179
1180 static int twl_remove(struct i2c_client *client)
1181 {
1182 unsigned i;
1183 int status;
1184
1185 if (twl_class_is_4030())
1186 status = twl4030_exit_irq();
1187 else
1188 status = twl6030_exit_irq();
1189
1190 if (status < 0)
1191 return status;
1192
1193 for (i = 0; i < TWL_NUM_SLAVES; i++) {
1194 struct twl_client *twl = &twl_modules[i];
1195
1196 if (twl->client && twl->client != client)
1197 i2c_unregister_device(twl->client);
1198 twl_modules[i].client = NULL;
1199 }
1200 inuse = false;
1201 return 0;
1202 }
1203
1204 /* NOTE: this driver only handles a single twl4030/tps659x0 chip */
1205 static int __devinit
1206 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1207 {
1208 int status;
1209 unsigned i;
1210 struct twl4030_platform_data *pdata = client->dev.platform_data;
1211 u8 temp;
1212 int ret = 0;
1213
1214 if (!pdata) {
1215 dev_dbg(&client->dev, "no platform data?\n");
1216 return -EINVAL;
1217 }
1218
1219 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1220 dev_dbg(&client->dev, "can't talk I2C?\n");
1221 return -EIO;
1222 }
1223
1224 if (inuse) {
1225 dev_dbg(&client->dev, "driver is already in use\n");
1226 return -EBUSY;
1227 }
1228
1229 for (i = 0; i < TWL_NUM_SLAVES; i++) {
1230 struct twl_client *twl = &twl_modules[i];
1231
1232 twl->address = client->addr + i;
1233 if (i == 0)
1234 twl->client = client;
1235 else {
1236 twl->client = i2c_new_dummy(client->adapter,
1237 twl->address);
1238 if (!twl->client) {
1239 dev_err(&client->dev,
1240 "can't attach client %d\n", i);
1241 status = -ENOMEM;
1242 goto fail;
1243 }
1244 }
1245 mutex_init(&twl->xfer_lock);
1246 }
1247 inuse = true;
1248 if ((id->driver_data) & TWL6030_CLASS) {
1249 twl_id = TWL6030_CLASS_ID;
1250 twl_map = &twl6030_map[0];
1251 } else {
1252 twl_id = TWL4030_CLASS_ID;
1253 twl_map = &twl4030_map[0];
1254 }
1255
1256 /* setup clock framework */
1257 clocks_init(&client->dev, pdata->clock);
1258
1259 /* read TWL IDCODE Register */
1260 if (twl_id == TWL4030_CLASS_ID) {
1261 ret = twl_read_idcode_register();
1262 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1263 }
1264
1265 /* load power event scripts */
1266 if (twl_has_power()) {
1267 if (twl_class_is_4030() && pdata->power)
1268 twl4030_power_init(pdata->power);
1269 if (twl_class_is_6030())
1270 twl6030_power_init(pdata->power);
1271 }
1272
1273 /* Maybe init the T2 Interrupt subsystem */
1274 if (client->irq
1275 && pdata->irq_base
1276 && pdata->irq_end > pdata->irq_base) {
1277 if (twl_class_is_4030()) {
1278 twl4030_init_chip_irq(id->name);
1279 status = twl4030_init_irq(client->irq, pdata->irq_base,
1280 pdata->irq_end);
1281 } else {
1282 status = twl6030_init_irq(client->irq, pdata->irq_base,
1283 pdata->irq_end);
1284 }
1285
1286 if (status < 0)
1287 goto fail;
1288 }
1289
1290 /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1291 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1292 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1293 */
1294
1295 if (twl_class_is_4030()) {
1296 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1297 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1298 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1299 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1300 }
1301
1302 status = add_children(pdata, id->driver_data);
1303 fail:
1304 if (status < 0)
1305 twl_remove(client);
1306 return status;
1307 }
1308
1309 static const struct i2c_device_id twl_ids[] = {
1310 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1311 { "twl5030", 0 }, /* T2 updated */
1312 { "twl5031", TWL5031 }, /* TWL5030 updated */
1313 { "tps65950", 0 }, /* catalog version of twl5030 */
1314 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1315 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1316 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1317 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1318 { /* end of list */ },
1319 };
1320 MODULE_DEVICE_TABLE(i2c, twl_ids);
1321
1322 /* One Client Driver , 4 Clients */
1323 static struct i2c_driver twl_driver = {
1324 .driver.name = DRIVER_NAME,
1325 .id_table = twl_ids,
1326 .probe = twl_probe,
1327 .remove = twl_remove,
1328 };
1329
1330 static int __init twl_init(void)
1331 {
1332 return i2c_add_driver(&twl_driver);
1333 }
1334 subsys_initcall(twl_init);
1335
1336 static void __exit twl_exit(void)
1337 {
1338 i2c_del_driver(&twl_driver);
1339 }
1340 module_exit(twl_exit);
1341
1342 MODULE_AUTHOR("Texas Instruments, Inc.");
1343 MODULE_DESCRIPTION("I2C Core interface for TWL");
1344 MODULE_LICENSE("GPL");