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Merge branch 'fixes-for-v3.6' of git://git.infradead.org/users/jcooper/linux into...
[deliverable/linux.git] / drivers / mfd / twl-core.c
1 /*
2 * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
3 * and audio CODEC devices
4 *
5 * Copyright (C) 2005-2006 Texas Instruments, Inc.
6 *
7 * Modifications to defer interrupt handling to a kernel thread:
8 * Copyright (C) 2006 MontaVista Software, Inc.
9 *
10 * Based on tlv320aic23.c:
11 * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
12 *
13 * Code cleanup and modifications to IRQ handler.
14 * by syed khasim <x0khasim@ti.com>
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 */
30
31 #include <linux/init.h>
32 #include <linux/mutex.h>
33 #include <linux/module.h>
34 #include <linux/platform_device.h>
35 #include <linux/clk.h>
36 #include <linux/err.h>
37 #include <linux/device.h>
38 #include <linux/of.h>
39 #include <linux/of_irq.h>
40 #include <linux/of_platform.h>
41 #include <linux/irq.h>
42 #include <linux/irqdomain.h>
43
44 #include <linux/regulator/machine.h>
45
46 #include <linux/i2c.h>
47 #include <linux/i2c/twl.h>
48
49 #include "twl-core.h"
50
51 /*
52 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
53 * Management and System Companion Device" chips originally designed for
54 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
55 * often at around 3 Mbit/sec, including for interrupt handling.
56 *
57 * This driver core provides genirq support for the interrupts emitted,
58 * by the various modules, and exports register access primitives.
59 *
60 * FIXME this driver currently requires use of the first interrupt line
61 * (and associated registers).
62 */
63
64 #define DRIVER_NAME "twl"
65
66 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
67 #define twl_has_keypad() true
68 #else
69 #define twl_has_keypad() false
70 #endif
71
72 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
73 #define twl_has_gpio() true
74 #else
75 #define twl_has_gpio() false
76 #endif
77
78 #if defined(CONFIG_REGULATOR_TWL4030) \
79 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
80 #define twl_has_regulator() true
81 #else
82 #define twl_has_regulator() false
83 #endif
84
85 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
86 #define twl_has_madc() true
87 #else
88 #define twl_has_madc() false
89 #endif
90
91 #ifdef CONFIG_TWL4030_POWER
92 #define twl_has_power() true
93 #else
94 #define twl_has_power() false
95 #endif
96
97 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
98 #define twl_has_rtc() true
99 #else
100 #define twl_has_rtc() false
101 #endif
102
103 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
104 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
105 #define twl_has_usb() true
106 #else
107 #define twl_has_usb() false
108 #endif
109
110 #if defined(CONFIG_TWL4030_WATCHDOG) || \
111 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
112 #define twl_has_watchdog() true
113 #else
114 #define twl_has_watchdog() false
115 #endif
116
117 #if defined(CONFIG_MFD_TWL4030_AUDIO) || \
118 defined(CONFIG_MFD_TWL4030_AUDIO_MODULE)
119 #define twl_has_codec() true
120 #else
121 #define twl_has_codec() false
122 #endif
123
124 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
125 #define twl_has_bci() true
126 #else
127 #define twl_has_bci() false
128 #endif
129
130 /* Triton Core internal information (BEGIN) */
131
132 /* Last - for index max*/
133 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
134
135 #define TWL_NUM_SLAVES 4
136
137 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
138 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
139 #define twl_has_pwrbutton() true
140 #else
141 #define twl_has_pwrbutton() false
142 #endif
143
144 #define SUB_CHIP_ID0 0
145 #define SUB_CHIP_ID1 1
146 #define SUB_CHIP_ID2 2
147 #define SUB_CHIP_ID3 3
148 #define SUB_CHIP_ID_INVAL 0xff
149
150 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
151
152 /* Base Address defns for twl4030_map[] */
153
154 /* subchip/slave 0 - USB ID */
155 #define TWL4030_BASEADD_USB 0x0000
156
157 /* subchip/slave 1 - AUD ID */
158 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
159 #define TWL4030_BASEADD_GPIO 0x0098
160 #define TWL4030_BASEADD_INTBR 0x0085
161 #define TWL4030_BASEADD_PIH 0x0080
162 #define TWL4030_BASEADD_TEST 0x004C
163
164 /* subchip/slave 2 - AUX ID */
165 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
166 #define TWL4030_BASEADD_LED 0x00EE
167 #define TWL4030_BASEADD_MADC 0x0000
168 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
169 #define TWL4030_BASEADD_PRECHARGE 0x00AA
170 #define TWL4030_BASEADD_PWM0 0x00F8
171 #define TWL4030_BASEADD_PWM1 0x00FB
172 #define TWL4030_BASEADD_PWMA 0x00EF
173 #define TWL4030_BASEADD_PWMB 0x00F1
174 #define TWL4030_BASEADD_KEYPAD 0x00D2
175
176 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
177 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
178 one */
179
180 /* subchip/slave 3 - POWER ID */
181 #define TWL4030_BASEADD_BACKUP 0x0014
182 #define TWL4030_BASEADD_INT 0x002E
183 #define TWL4030_BASEADD_PM_MASTER 0x0036
184 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
185 #define TWL4030_BASEADD_RTC 0x001C
186 #define TWL4030_BASEADD_SECURED_REG 0x0000
187
188 /* Triton Core internal information (END) */
189
190
191 /* subchip/slave 0 0x48 - POWER */
192 #define TWL6030_BASEADD_RTC 0x0000
193 #define TWL6030_BASEADD_MEM 0x0017
194 #define TWL6030_BASEADD_PM_MASTER 0x001F
195 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
196 #define TWL6030_BASEADD_PM_MISC 0x00E2
197 #define TWL6030_BASEADD_PM_PUPD 0x00F0
198
199 /* subchip/slave 1 0x49 - FEATURE */
200 #define TWL6030_BASEADD_USB 0x0000
201 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
202 #define TWL6030_BASEADD_AUX 0x0090
203 #define TWL6030_BASEADD_PWM 0x00BA
204 #define TWL6030_BASEADD_GASGAUGE 0x00C0
205 #define TWL6030_BASEADD_PIH 0x00D0
206 #define TWL6030_BASEADD_CHARGER 0x00E0
207 #define TWL6025_BASEADD_CHARGER 0x00DA
208
209 /* subchip/slave 2 0x4A - DFT */
210 #define TWL6030_BASEADD_DIEID 0x00C0
211
212 /* subchip/slave 3 0x4B - AUDIO */
213 #define TWL6030_BASEADD_AUDIO 0x0000
214 #define TWL6030_BASEADD_RSV 0x0000
215 #define TWL6030_BASEADD_ZERO 0x0000
216
217 /* Few power values */
218 #define R_CFG_BOOT 0x05
219
220 /* some fields in R_CFG_BOOT */
221 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
222 #define HFCLK_FREQ_26_MHZ (2 << 0)
223 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
224 #define HIGH_PERF_SQ (1 << 3)
225 #define CK32K_LOWPWR_EN (1 << 7)
226
227 /*----------------------------------------------------------------------*/
228
229 /* is driver active, bound to a chip? */
230 static bool inuse;
231
232 /* TWL IDCODE Register value */
233 static u32 twl_idcode;
234
235 static unsigned int twl_id;
236 unsigned int twl_rev(void)
237 {
238 return twl_id;
239 }
240 EXPORT_SYMBOL(twl_rev);
241
242 /* Structure for each TWL4030/TWL6030 Slave */
243 struct twl_client {
244 struct i2c_client *client;
245 u8 address;
246
247 /* max numb of i2c_msg required is for read =2 */
248 struct i2c_msg xfer_msg[2];
249
250 /* To lock access to xfer_msg */
251 struct mutex xfer_lock;
252 };
253
254 static struct twl_client twl_modules[TWL_NUM_SLAVES];
255
256 /* mapping the module id to slave id and base address */
257 struct twl_mapping {
258 unsigned char sid; /* Slave ID */
259 unsigned char base; /* base address */
260 };
261 static struct twl_mapping *twl_map;
262
263 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
264 /*
265 * NOTE: don't change this table without updating the
266 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
267 * so they continue to match the order in this table.
268 */
269
270 { 0, TWL4030_BASEADD_USB },
271
272 { 1, TWL4030_BASEADD_AUDIO_VOICE },
273 { 1, TWL4030_BASEADD_GPIO },
274 { 1, TWL4030_BASEADD_INTBR },
275 { 1, TWL4030_BASEADD_PIH },
276 { 1, TWL4030_BASEADD_TEST },
277
278 { 2, TWL4030_BASEADD_KEYPAD },
279 { 2, TWL4030_BASEADD_MADC },
280 { 2, TWL4030_BASEADD_INTERRUPTS },
281 { 2, TWL4030_BASEADD_LED },
282 { 2, TWL4030_BASEADD_MAIN_CHARGE },
283 { 2, TWL4030_BASEADD_PRECHARGE },
284 { 2, TWL4030_BASEADD_PWM0 },
285 { 2, TWL4030_BASEADD_PWM1 },
286 { 2, TWL4030_BASEADD_PWMA },
287 { 2, TWL4030_BASEADD_PWMB },
288 { 2, TWL5031_BASEADD_ACCESSORY },
289 { 2, TWL5031_BASEADD_INTERRUPTS },
290
291 { 3, TWL4030_BASEADD_BACKUP },
292 { 3, TWL4030_BASEADD_INT },
293 { 3, TWL4030_BASEADD_PM_MASTER },
294 { 3, TWL4030_BASEADD_PM_RECEIVER },
295 { 3, TWL4030_BASEADD_RTC },
296 { 3, TWL4030_BASEADD_SECURED_REG },
297 };
298
299 static struct twl_mapping twl6030_map[] = {
300 /*
301 * NOTE: don't change this table without updating the
302 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
303 * so they continue to match the order in this table.
304 */
305 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
306 { SUB_CHIP_ID_INVAL, TWL6030_BASEADD_AUDIO },
307 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
308 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
309 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
310
311 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
312 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
313 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
314 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
315 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
316
317 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
318 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
319 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
320 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
321 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
322
323 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
324 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
325 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
326 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
327 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
328 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
329 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
330
331 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
332 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
333 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
334 };
335
336 /*----------------------------------------------------------------------*/
337
338 /* Exported Functions */
339
340 /**
341 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
342 * @mod_no: module number
343 * @value: an array of num_bytes+1 containing data to write
344 * @reg: register address (just offset will do)
345 * @num_bytes: number of bytes to transfer
346 *
347 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
348 * valid data starts at Offset 1.
349 *
350 * Returns the result of operation - 0 is success
351 */
352 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
353 {
354 int ret;
355 int sid;
356 struct twl_client *twl;
357 struct i2c_msg *msg;
358
359 if (unlikely(mod_no > TWL_MODULE_LAST)) {
360 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
361 return -EPERM;
362 }
363 if (unlikely(!inuse)) {
364 pr_err("%s: not initialized\n", DRIVER_NAME);
365 return -EPERM;
366 }
367 sid = twl_map[mod_no].sid;
368 if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
369 pr_err("%s: module %d is not part of the pmic\n",
370 DRIVER_NAME, mod_no);
371 return -EINVAL;
372 }
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\n",
393 DRIVER_NAME);
394 if (ret < 0)
395 return ret;
396 else
397 return -EIO;
398 } else {
399 return 0;
400 }
401 }
402 EXPORT_SYMBOL(twl_i2c_write);
403
404 /**
405 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
406 * @mod_no: module number
407 * @value: an array of num_bytes containing data to be read
408 * @reg: register address (just offset will do)
409 * @num_bytes: number of bytes to transfer
410 *
411 * Returns result of operation - num_bytes is success else failure.
412 */
413 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
414 {
415 int ret;
416 u8 val;
417 int sid;
418 struct twl_client *twl;
419 struct i2c_msg *msg;
420
421 if (unlikely(mod_no > TWL_MODULE_LAST)) {
422 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
423 return -EPERM;
424 }
425 if (unlikely(!inuse)) {
426 pr_err("%s: not initialized\n", DRIVER_NAME);
427 return -EPERM;
428 }
429 sid = twl_map[mod_no].sid;
430 if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
431 pr_err("%s: module %d is not part of the pmic\n",
432 DRIVER_NAME, mod_no);
433 return -EINVAL;
434 }
435 twl = &twl_modules[sid];
436
437 mutex_lock(&twl->xfer_lock);
438 /* [MSG1] fill the register address data */
439 msg = &twl->xfer_msg[0];
440 msg->addr = twl->address;
441 msg->len = 1;
442 msg->flags = 0; /* Read the register value */
443 val = twl_map[mod_no].base + reg;
444 msg->buf = &val;
445 /* [MSG2] fill the data rx buffer */
446 msg = &twl->xfer_msg[1];
447 msg->addr = twl->address;
448 msg->flags = I2C_M_RD; /* Read the register value */
449 msg->len = num_bytes; /* only n bytes */
450 msg->buf = value;
451 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
452 mutex_unlock(&twl->xfer_lock);
453
454 /* i2c_transfer returns number of messages transferred */
455 if (ret != 2) {
456 pr_err("%s: i2c_read failed to transfer all messages\n",
457 DRIVER_NAME);
458 if (ret < 0)
459 return ret;
460 else
461 return -EIO;
462 } else {
463 return 0;
464 }
465 }
466 EXPORT_SYMBOL(twl_i2c_read);
467
468 /**
469 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
470 * @mod_no: module number
471 * @value: the value to be written 8 bit
472 * @reg: register address (just offset will do)
473 *
474 * Returns result of operation - 0 is success
475 */
476 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
477 {
478
479 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
480 u8 temp_buffer[2] = { 0 };
481 /* offset 1 contains the data */
482 temp_buffer[1] = value;
483 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
484 }
485 EXPORT_SYMBOL(twl_i2c_write_u8);
486
487 /**
488 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
489 * @mod_no: module number
490 * @value: the value read 8 bit
491 * @reg: register address (just offset will do)
492 *
493 * Returns result of operation - 0 is success
494 */
495 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
496 {
497 return twl_i2c_read(mod_no, value, reg, 1);
498 }
499 EXPORT_SYMBOL(twl_i2c_read_u8);
500
501 /*----------------------------------------------------------------------*/
502
503 /**
504 * twl_read_idcode_register - API to read the IDCODE register.
505 *
506 * Unlocks the IDCODE register and read the 32 bit value.
507 */
508 static int twl_read_idcode_register(void)
509 {
510 int err;
511
512 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
513 REG_UNLOCK_TEST_REG);
514 if (err) {
515 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
516 goto fail;
517 }
518
519 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
520 REG_IDCODE_7_0, 4);
521 if (err) {
522 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
523 goto fail;
524 }
525
526 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
527 if (err)
528 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
529 fail:
530 return err;
531 }
532
533 /**
534 * twl_get_type - API to get TWL Si type.
535 *
536 * Api to get the TWL Si type from IDCODE value.
537 */
538 int twl_get_type(void)
539 {
540 return TWL_SIL_TYPE(twl_idcode);
541 }
542 EXPORT_SYMBOL_GPL(twl_get_type);
543
544 /**
545 * twl_get_version - API to get TWL Si version.
546 *
547 * Api to get the TWL Si version from IDCODE value.
548 */
549 int twl_get_version(void)
550 {
551 return TWL_SIL_REV(twl_idcode);
552 }
553 EXPORT_SYMBOL_GPL(twl_get_version);
554
555 static struct device *
556 add_numbered_child(unsigned chip, const char *name, int num,
557 void *pdata, unsigned pdata_len,
558 bool can_wakeup, int irq0, int irq1)
559 {
560 struct platform_device *pdev;
561 struct twl_client *twl = &twl_modules[chip];
562 int status;
563
564 pdev = platform_device_alloc(name, num);
565 if (!pdev) {
566 dev_dbg(&twl->client->dev, "can't alloc dev\n");
567 status = -ENOMEM;
568 goto err;
569 }
570
571 pdev->dev.parent = &twl->client->dev;
572
573 if (pdata) {
574 status = platform_device_add_data(pdev, pdata, pdata_len);
575 if (status < 0) {
576 dev_dbg(&pdev->dev, "can't add platform_data\n");
577 goto err;
578 }
579 }
580
581 if (irq0) {
582 struct resource r[2] = {
583 { .start = irq0, .flags = IORESOURCE_IRQ, },
584 { .start = irq1, .flags = IORESOURCE_IRQ, },
585 };
586
587 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
588 if (status < 0) {
589 dev_dbg(&pdev->dev, "can't add irqs\n");
590 goto err;
591 }
592 }
593
594 status = platform_device_add(pdev);
595 if (status == 0)
596 device_init_wakeup(&pdev->dev, can_wakeup);
597
598 err:
599 if (status < 0) {
600 platform_device_put(pdev);
601 dev_err(&twl->client->dev, "can't add %s dev\n", name);
602 return ERR_PTR(status);
603 }
604 return &pdev->dev;
605 }
606
607 static inline struct device *add_child(unsigned chip, const char *name,
608 void *pdata, unsigned pdata_len,
609 bool can_wakeup, int irq0, int irq1)
610 {
611 return add_numbered_child(chip, name, -1, pdata, pdata_len,
612 can_wakeup, irq0, irq1);
613 }
614
615 static struct device *
616 add_regulator_linked(int num, struct regulator_init_data *pdata,
617 struct regulator_consumer_supply *consumers,
618 unsigned num_consumers, unsigned long features)
619 {
620 unsigned sub_chip_id;
621 struct twl_regulator_driver_data drv_data;
622
623 /* regulator framework demands init_data ... */
624 if (!pdata)
625 return NULL;
626
627 if (consumers) {
628 pdata->consumer_supplies = consumers;
629 pdata->num_consumer_supplies = num_consumers;
630 }
631
632 if (pdata->driver_data) {
633 /* If we have existing drv_data, just add the flags */
634 struct twl_regulator_driver_data *tmp;
635 tmp = pdata->driver_data;
636 tmp->features |= features;
637 } else {
638 /* add new driver data struct, used only during init */
639 drv_data.features = features;
640 drv_data.set_voltage = NULL;
641 drv_data.get_voltage = NULL;
642 drv_data.data = NULL;
643 pdata->driver_data = &drv_data;
644 }
645
646 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
647 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
648 return add_numbered_child(sub_chip_id, "twl_reg", num,
649 pdata, sizeof(*pdata), false, 0, 0);
650 }
651
652 static struct device *
653 add_regulator(int num, struct regulator_init_data *pdata,
654 unsigned long features)
655 {
656 return add_regulator_linked(num, pdata, NULL, 0, features);
657 }
658
659 /*
660 * NOTE: We know the first 8 IRQs after pdata->base_irq are
661 * for the PIH, and the next are for the PWR_INT SIH, since
662 * that's how twl_init_irq() sets things up.
663 */
664
665 static int
666 add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
667 unsigned long features)
668 {
669 struct device *child;
670 unsigned sub_chip_id;
671
672 if (twl_has_gpio() && pdata->gpio) {
673 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
674 pdata->gpio, sizeof(*pdata->gpio),
675 false, irq_base + GPIO_INTR_OFFSET, 0);
676 if (IS_ERR(child))
677 return PTR_ERR(child);
678 }
679
680 if (twl_has_keypad() && pdata->keypad) {
681 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
682 pdata->keypad, sizeof(*pdata->keypad),
683 true, irq_base + KEYPAD_INTR_OFFSET, 0);
684 if (IS_ERR(child))
685 return PTR_ERR(child);
686 }
687
688 if (twl_has_madc() && pdata->madc) {
689 child = add_child(2, "twl4030_madc",
690 pdata->madc, sizeof(*pdata->madc),
691 true, irq_base + MADC_INTR_OFFSET, 0);
692 if (IS_ERR(child))
693 return PTR_ERR(child);
694 }
695
696 if (twl_has_rtc()) {
697 /*
698 * REVISIT platform_data here currently might expose the
699 * "msecure" line ... but for now we just expect board
700 * setup to tell the chip "it's always ok to SET_TIME".
701 * Eventually, Linux might become more aware of such
702 * HW security concerns, and "least privilege".
703 */
704 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
705 child = add_child(sub_chip_id, "twl_rtc",
706 NULL, 0,
707 true, irq_base + RTC_INTR_OFFSET, 0);
708 if (IS_ERR(child))
709 return PTR_ERR(child);
710 }
711
712 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
713
714 static struct regulator_consumer_supply usb1v5 = {
715 .supply = "usb1v5",
716 };
717 static struct regulator_consumer_supply usb1v8 = {
718 .supply = "usb1v8",
719 };
720 static struct regulator_consumer_supply usb3v1[] = {
721 { .supply = "usb3v1" },
722 { .supply = "bci3v1" },
723 };
724
725 /* First add the regulators so that they can be used by transceiver */
726 if (twl_has_regulator()) {
727 /* this is a template that gets copied */
728 struct regulator_init_data usb_fixed = {
729 .constraints.valid_modes_mask =
730 REGULATOR_MODE_NORMAL
731 | REGULATOR_MODE_STANDBY,
732 .constraints.valid_ops_mask =
733 REGULATOR_CHANGE_MODE
734 | REGULATOR_CHANGE_STATUS,
735 };
736
737 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
738 &usb_fixed, &usb1v5, 1,
739 features);
740 if (IS_ERR(child))
741 return PTR_ERR(child);
742
743 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
744 &usb_fixed, &usb1v8, 1,
745 features);
746 if (IS_ERR(child))
747 return PTR_ERR(child);
748
749 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
750 &usb_fixed, usb3v1, 2,
751 features);
752 if (IS_ERR(child))
753 return PTR_ERR(child);
754
755 }
756
757 child = add_child(0, "twl4030_usb",
758 pdata->usb, sizeof(*pdata->usb),
759 true,
760 /* irq0 = USB_PRES, irq1 = USB */
761 irq_base + USB_PRES_INTR_OFFSET,
762 irq_base + USB_INTR_OFFSET);
763
764 if (IS_ERR(child))
765 return PTR_ERR(child);
766
767 /* we need to connect regulators to this transceiver */
768 if (twl_has_regulator() && child) {
769 usb1v5.dev_name = dev_name(child);
770 usb1v8.dev_name = dev_name(child);
771 usb3v1[0].dev_name = dev_name(child);
772 }
773 }
774 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
775
776 static struct regulator_consumer_supply usb3v3;
777 int regulator;
778
779 if (twl_has_regulator()) {
780 /* this is a template that gets copied */
781 struct regulator_init_data usb_fixed = {
782 .constraints.valid_modes_mask =
783 REGULATOR_MODE_NORMAL
784 | REGULATOR_MODE_STANDBY,
785 .constraints.valid_ops_mask =
786 REGULATOR_CHANGE_MODE
787 | REGULATOR_CHANGE_STATUS,
788 };
789
790 if (features & TWL6025_SUBCLASS) {
791 usb3v3.supply = "ldousb";
792 regulator = TWL6025_REG_LDOUSB;
793 } else {
794 usb3v3.supply = "vusb";
795 regulator = TWL6030_REG_VUSB;
796 }
797 child = add_regulator_linked(regulator, &usb_fixed,
798 &usb3v3, 1,
799 features);
800 if (IS_ERR(child))
801 return PTR_ERR(child);
802 }
803
804 pdata->usb->features = features;
805
806 child = add_child(0, "twl6030_usb",
807 pdata->usb, sizeof(*pdata->usb),
808 true,
809 /* irq1 = VBUS_PRES, irq0 = USB ID */
810 irq_base + USBOTG_INTR_OFFSET,
811 irq_base + USB_PRES_INTR_OFFSET);
812
813 if (IS_ERR(child))
814 return PTR_ERR(child);
815 /* we need to connect regulators to this transceiver */
816 if (twl_has_regulator() && child)
817 usb3v3.dev_name = dev_name(child);
818 } else if (twl_has_regulator() && twl_class_is_6030()) {
819 if (features & TWL6025_SUBCLASS)
820 child = add_regulator(TWL6025_REG_LDOUSB,
821 pdata->ldousb, features);
822 else
823 child = add_regulator(TWL6030_REG_VUSB,
824 pdata->vusb, features);
825
826 if (IS_ERR(child))
827 return PTR_ERR(child);
828 }
829
830 if (twl_has_watchdog() && twl_class_is_4030()) {
831 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
832 if (IS_ERR(child))
833 return PTR_ERR(child);
834 }
835
836 if (twl_has_pwrbutton() && twl_class_is_4030()) {
837 child = add_child(1, "twl4030_pwrbutton",
838 NULL, 0, true, irq_base + 8 + 0, 0);
839 if (IS_ERR(child))
840 return PTR_ERR(child);
841 }
842
843 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
844 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
845 child = add_child(sub_chip_id, "twl4030-audio",
846 pdata->audio, sizeof(*pdata->audio),
847 false, 0, 0);
848 if (IS_ERR(child))
849 return PTR_ERR(child);
850 }
851
852 /* twl4030 regulators */
853 if (twl_has_regulator() && twl_class_is_4030()) {
854 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
855 features);
856 if (IS_ERR(child))
857 return PTR_ERR(child);
858
859 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
860 features);
861 if (IS_ERR(child))
862 return PTR_ERR(child);
863
864 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
865 features);
866 if (IS_ERR(child))
867 return PTR_ERR(child);
868
869 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
870 features);
871 if (IS_ERR(child))
872 return PTR_ERR(child);
873
874 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
875 features);
876 if (IS_ERR(child))
877 return PTR_ERR(child);
878
879 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
880 features);
881 if (IS_ERR(child))
882 return PTR_ERR(child);
883
884 child = add_regulator((features & TWL4030_VAUX2)
885 ? TWL4030_REG_VAUX2_4030
886 : TWL4030_REG_VAUX2,
887 pdata->vaux2, features);
888 if (IS_ERR(child))
889 return PTR_ERR(child);
890
891 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
892 features);
893 if (IS_ERR(child))
894 return PTR_ERR(child);
895
896 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
897 features);
898 if (IS_ERR(child))
899 return PTR_ERR(child);
900
901 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
902 features);
903 if (IS_ERR(child))
904 return PTR_ERR(child);
905 }
906
907 /* maybe add LDOs that are omitted on cost-reduced parts */
908 if (twl_has_regulator() && !(features & TPS_SUBSET)
909 && twl_class_is_4030()) {
910 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
911 features);
912 if (IS_ERR(child))
913 return PTR_ERR(child);
914
915 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
916 features);
917 if (IS_ERR(child))
918 return PTR_ERR(child);
919
920 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
921 features);
922 if (IS_ERR(child))
923 return PTR_ERR(child);
924
925 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
926 features);
927 if (IS_ERR(child))
928 return PTR_ERR(child);
929
930 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
931 features);
932 if (IS_ERR(child))
933 return PTR_ERR(child);
934
935 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
936 features);
937 if (IS_ERR(child))
938 return PTR_ERR(child);
939 }
940
941 /* twl6030 regulators */
942 if (twl_has_regulator() && twl_class_is_6030() &&
943 !(features & TWL6025_SUBCLASS)) {
944 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
945 features);
946 if (IS_ERR(child))
947 return PTR_ERR(child);
948
949 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
950 features);
951 if (IS_ERR(child))
952 return PTR_ERR(child);
953
954 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
955 features);
956 if (IS_ERR(child))
957 return PTR_ERR(child);
958
959 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
960 features);
961 if (IS_ERR(child))
962 return PTR_ERR(child);
963
964 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
965 features);
966 if (IS_ERR(child))
967 return PTR_ERR(child);
968
969 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
970 features);
971 if (IS_ERR(child))
972 return PTR_ERR(child);
973
974 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
975 features);
976 if (IS_ERR(child))
977 return PTR_ERR(child);
978
979 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
980 features);
981 if (IS_ERR(child))
982 return PTR_ERR(child);
983
984 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
985 features);
986 if (IS_ERR(child))
987 return PTR_ERR(child);
988
989 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
990 features);
991 if (IS_ERR(child))
992 return PTR_ERR(child);
993
994 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
995 features);
996 if (IS_ERR(child))
997 return PTR_ERR(child);
998
999 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
1000 features);
1001 if (IS_ERR(child))
1002 return PTR_ERR(child);
1003
1004 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
1005 features);
1006 if (IS_ERR(child))
1007 return PTR_ERR(child);
1008
1009 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
1010 features);
1011 if (IS_ERR(child))
1012 return PTR_ERR(child);
1013 }
1014
1015 /* 6030 and 6025 share this regulator */
1016 if (twl_has_regulator() && twl_class_is_6030()) {
1017 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
1018 features);
1019 if (IS_ERR(child))
1020 return PTR_ERR(child);
1021 }
1022
1023 /* twl6025 regulators */
1024 if (twl_has_regulator() && twl_class_is_6030() &&
1025 (features & TWL6025_SUBCLASS)) {
1026 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
1027 features);
1028 if (IS_ERR(child))
1029 return PTR_ERR(child);
1030
1031 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1032 features);
1033 if (IS_ERR(child))
1034 return PTR_ERR(child);
1035
1036 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1037 features);
1038 if (IS_ERR(child))
1039 return PTR_ERR(child);
1040
1041 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1042 features);
1043 if (IS_ERR(child))
1044 return PTR_ERR(child);
1045
1046 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1047 features);
1048 if (IS_ERR(child))
1049 return PTR_ERR(child);
1050
1051 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1052 features);
1053 if (IS_ERR(child))
1054 return PTR_ERR(child);
1055
1056 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1057 features);
1058 if (IS_ERR(child))
1059 return PTR_ERR(child);
1060
1061 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1062 features);
1063 if (IS_ERR(child))
1064 return PTR_ERR(child);
1065
1066 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1067 features);
1068 if (IS_ERR(child))
1069 return PTR_ERR(child);
1070
1071 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1072 features);
1073 if (IS_ERR(child))
1074 return PTR_ERR(child);
1075
1076 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1077 features);
1078 if (IS_ERR(child))
1079 return PTR_ERR(child);
1080
1081 }
1082
1083 if (twl_has_bci() && pdata->bci &&
1084 !(features & (TPS_SUBSET | TWL5031))) {
1085 child = add_child(3, "twl4030_bci",
1086 pdata->bci, sizeof(*pdata->bci), false,
1087 /* irq0 = CHG_PRES, irq1 = BCI */
1088 irq_base + BCI_PRES_INTR_OFFSET,
1089 irq_base + BCI_INTR_OFFSET);
1090 if (IS_ERR(child))
1091 return PTR_ERR(child);
1092 }
1093
1094 return 0;
1095 }
1096
1097 /*----------------------------------------------------------------------*/
1098
1099 /*
1100 * These three functions initialize the on-chip clock framework,
1101 * letting it generate the right frequencies for USB, MADC, and
1102 * other purposes.
1103 */
1104 static inline int __init protect_pm_master(void)
1105 {
1106 int e = 0;
1107
1108 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1109 TWL4030_PM_MASTER_PROTECT_KEY);
1110 return e;
1111 }
1112
1113 static inline int __init unprotect_pm_master(void)
1114 {
1115 int e = 0;
1116
1117 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1118 TWL4030_PM_MASTER_KEY_CFG1,
1119 TWL4030_PM_MASTER_PROTECT_KEY);
1120 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1121 TWL4030_PM_MASTER_KEY_CFG2,
1122 TWL4030_PM_MASTER_PROTECT_KEY);
1123
1124 return e;
1125 }
1126
1127 static void clocks_init(struct device *dev,
1128 struct twl4030_clock_init_data *clock)
1129 {
1130 int e = 0;
1131 struct clk *osc;
1132 u32 rate;
1133 u8 ctrl = HFCLK_FREQ_26_MHZ;
1134
1135 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1136 if (cpu_is_omap2430())
1137 osc = clk_get(dev, "osc_ck");
1138 else
1139 osc = clk_get(dev, "osc_sys_ck");
1140
1141 if (IS_ERR(osc)) {
1142 printk(KERN_WARNING "Skipping twl internal clock init and "
1143 "using bootloader value (unknown osc rate)\n");
1144 return;
1145 }
1146
1147 rate = clk_get_rate(osc);
1148 clk_put(osc);
1149
1150 #else
1151 /* REVISIT for non-OMAP systems, pass the clock rate from
1152 * board init code, using platform_data.
1153 */
1154 osc = ERR_PTR(-EIO);
1155
1156 printk(KERN_WARNING "Skipping twl internal clock init and "
1157 "using bootloader value (unknown osc rate)\n");
1158
1159 return;
1160 #endif
1161
1162 switch (rate) {
1163 case 19200000:
1164 ctrl = HFCLK_FREQ_19p2_MHZ;
1165 break;
1166 case 26000000:
1167 ctrl = HFCLK_FREQ_26_MHZ;
1168 break;
1169 case 38400000:
1170 ctrl = HFCLK_FREQ_38p4_MHZ;
1171 break;
1172 }
1173
1174 ctrl |= HIGH_PERF_SQ;
1175 if (clock && clock->ck32k_lowpwr_enable)
1176 ctrl |= CK32K_LOWPWR_EN;
1177
1178 e |= unprotect_pm_master();
1179 /* effect->MADC+USB ck en */
1180 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1181 e |= protect_pm_master();
1182
1183 if (e < 0)
1184 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1185 }
1186
1187 /*----------------------------------------------------------------------*/
1188
1189
1190 static int twl_remove(struct i2c_client *client)
1191 {
1192 unsigned i, num_slaves;
1193 int status;
1194
1195 if (twl_class_is_4030()) {
1196 status = twl4030_exit_irq();
1197 num_slaves = TWL_NUM_SLAVES;
1198 } else {
1199 status = twl6030_exit_irq();
1200 num_slaves = TWL_NUM_SLAVES - 1;
1201 }
1202
1203 if (status < 0)
1204 return status;
1205
1206 for (i = 0; i < num_slaves; i++) {
1207 struct twl_client *twl = &twl_modules[i];
1208
1209 if (twl->client && twl->client != client)
1210 i2c_unregister_device(twl->client);
1211 twl_modules[i].client = NULL;
1212 }
1213 inuse = false;
1214 return 0;
1215 }
1216
1217 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1218 static int __devinit
1219 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1220 {
1221 struct twl4030_platform_data *pdata = client->dev.platform_data;
1222 struct device_node *node = client->dev.of_node;
1223 int irq_base = 0;
1224 int status;
1225 unsigned i, num_slaves;
1226
1227 if (node && !pdata) {
1228 /*
1229 * XXX: Temporary pdata until the information is correctly
1230 * retrieved by every TWL modules from DT.
1231 */
1232 pdata = devm_kzalloc(&client->dev,
1233 sizeof(struct twl4030_platform_data),
1234 GFP_KERNEL);
1235 if (!pdata)
1236 return -ENOMEM;
1237 }
1238
1239 if (!pdata) {
1240 dev_dbg(&client->dev, "no platform data?\n");
1241 return -EINVAL;
1242 }
1243
1244 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1245 dev_dbg(&client->dev, "can't talk I2C?\n");
1246 return -EIO;
1247 }
1248
1249 if (inuse) {
1250 dev_dbg(&client->dev, "driver is already in use\n");
1251 return -EBUSY;
1252 }
1253
1254 if ((id->driver_data) & TWL6030_CLASS) {
1255 twl_id = TWL6030_CLASS_ID;
1256 twl_map = &twl6030_map[0];
1257 num_slaves = TWL_NUM_SLAVES - 1;
1258 } else {
1259 twl_id = TWL4030_CLASS_ID;
1260 twl_map = &twl4030_map[0];
1261 num_slaves = TWL_NUM_SLAVES;
1262 }
1263
1264 for (i = 0; i < num_slaves; i++) {
1265 struct twl_client *twl = &twl_modules[i];
1266
1267 twl->address = client->addr + i;
1268 if (i == 0) {
1269 twl->client = client;
1270 } else {
1271 twl->client = i2c_new_dummy(client->adapter,
1272 twl->address);
1273 if (!twl->client) {
1274 dev_err(&client->dev,
1275 "can't attach client %d\n", i);
1276 status = -ENOMEM;
1277 goto fail;
1278 }
1279 }
1280 mutex_init(&twl->xfer_lock);
1281 }
1282
1283 inuse = true;
1284
1285 /* setup clock framework */
1286 clocks_init(&client->dev, pdata->clock);
1287
1288 /* read TWL IDCODE Register */
1289 if (twl_id == TWL4030_CLASS_ID) {
1290 status = twl_read_idcode_register();
1291 WARN(status < 0, "Error: reading twl_idcode register value\n");
1292 }
1293
1294 /* load power event scripts */
1295 if (twl_has_power() && pdata->power)
1296 twl4030_power_init(pdata->power);
1297
1298 /* Maybe init the T2 Interrupt subsystem */
1299 if (client->irq) {
1300 if (twl_class_is_4030()) {
1301 twl4030_init_chip_irq(id->name);
1302 irq_base = twl4030_init_irq(&client->dev, client->irq);
1303 } else {
1304 irq_base = twl6030_init_irq(&client->dev, client->irq);
1305 }
1306
1307 if (irq_base < 0) {
1308 status = irq_base;
1309 goto fail;
1310 }
1311 }
1312
1313 /*
1314 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1315 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1316 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1317 */
1318 if (twl_class_is_4030()) {
1319 u8 temp;
1320
1321 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1322 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1323 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1324 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1325 }
1326
1327 status = -ENODEV;
1328 if (node)
1329 status = of_platform_populate(node, NULL, NULL, &client->dev);
1330 if (status)
1331 status = add_children(pdata, irq_base, id->driver_data);
1332
1333 fail:
1334 if (status < 0)
1335 twl_remove(client);
1336
1337 return status;
1338 }
1339
1340 static const struct i2c_device_id twl_ids[] = {
1341 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1342 { "twl5030", 0 }, /* T2 updated */
1343 { "twl5031", TWL5031 }, /* TWL5030 updated */
1344 { "tps65950", 0 }, /* catalog version of twl5030 */
1345 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1346 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1347 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
1348 and vibrator. Charger in USB module*/
1349 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1350 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1351 { /* end of list */ },
1352 };
1353 MODULE_DEVICE_TABLE(i2c, twl_ids);
1354
1355 /* One Client Driver , 4 Clients */
1356 static struct i2c_driver twl_driver = {
1357 .driver.name = DRIVER_NAME,
1358 .id_table = twl_ids,
1359 .probe = twl_probe,
1360 .remove = twl_remove,
1361 };
1362
1363 static int __init twl_init(void)
1364 {
1365 return i2c_add_driver(&twl_driver);
1366 }
1367 subsys_initcall(twl_init);
1368
1369 static void __exit twl_exit(void)
1370 {
1371 i2c_del_driver(&twl_driver);
1372 }
1373 module_exit(twl_exit);
1374
1375 MODULE_AUTHOR("Texas Instruments, Inc.");
1376 MODULE_DESCRIPTION("I2C Core interface for TWL");
1377 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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