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drm: Constify some function arguments
[linux-2.6/libata-dev.git] / drivers / mfd / twl-core.c
blob4ae6423202058c0e1e7d7c9c262b8c25fd38d917
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 /* Triton Core internal information (BEGIN) */
67
68 /* Last - for index max*/
69 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
70
71 #define TWL_NUM_SLAVES 4
72
73 #define SUB_CHIP_ID0 0
74 #define SUB_CHIP_ID1 1
75 #define SUB_CHIP_ID2 2
76 #define SUB_CHIP_ID3 3
77 #define SUB_CHIP_ID_INVAL 0xff
78
79 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
80
81 /* Base Address defns for twl4030_map[] */
82
83 /* subchip/slave 0 - USB ID */
84 #define TWL4030_BASEADD_USB 0x0000
85
86 /* subchip/slave 1 - AUD ID */
87 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
88 #define TWL4030_BASEADD_GPIO 0x0098
89 #define TWL4030_BASEADD_INTBR 0x0085
90 #define TWL4030_BASEADD_PIH 0x0080
91 #define TWL4030_BASEADD_TEST 0x004C
92
93 /* subchip/slave 2 - AUX ID */
94 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
95 #define TWL4030_BASEADD_LED 0x00EE
96 #define TWL4030_BASEADD_MADC 0x0000
97 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
98 #define TWL4030_BASEADD_PRECHARGE 0x00AA
99 #define TWL4030_BASEADD_PWM0 0x00F8
100 #define TWL4030_BASEADD_PWM1 0x00FB
101 #define TWL4030_BASEADD_PWMA 0x00EF
102 #define TWL4030_BASEADD_PWMB 0x00F1
103 #define TWL4030_BASEADD_KEYPAD 0x00D2
104
105 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
106 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
107 one */
108
109 /* subchip/slave 3 - POWER ID */
110 #define TWL4030_BASEADD_BACKUP 0x0014
111 #define TWL4030_BASEADD_INT 0x002E
112 #define TWL4030_BASEADD_PM_MASTER 0x0036
113 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
114 #define TWL4030_BASEADD_RTC 0x001C
115 #define TWL4030_BASEADD_SECURED_REG 0x0000
116
117 /* Triton Core internal information (END) */
118
119
120 /* subchip/slave 0 0x48 - POWER */
121 #define TWL6030_BASEADD_RTC 0x0000
122 #define TWL6030_BASEADD_MEM 0x0017
123 #define TWL6030_BASEADD_PM_MASTER 0x001F
124 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
125 #define TWL6030_BASEADD_PM_MISC 0x00E2
126 #define TWL6030_BASEADD_PM_PUPD 0x00F0
127
128 /* subchip/slave 1 0x49 - FEATURE */
129 #define TWL6030_BASEADD_USB 0x0000
130 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
131 #define TWL6030_BASEADD_AUX 0x0090
132 #define TWL6030_BASEADD_PWM 0x00BA
133 #define TWL6030_BASEADD_GASGAUGE 0x00C0
134 #define TWL6030_BASEADD_PIH 0x00D0
135 #define TWL6030_BASEADD_CHARGER 0x00E0
136 #define TWL6025_BASEADD_CHARGER 0x00DA
137
138 /* subchip/slave 2 0x4A - DFT */
139 #define TWL6030_BASEADD_DIEID 0x00C0
140
141 /* subchip/slave 3 0x4B - AUDIO */
142 #define TWL6030_BASEADD_AUDIO 0x0000
143 #define TWL6030_BASEADD_RSV 0x0000
144 #define TWL6030_BASEADD_ZERO 0x0000
145
146 /* Few power values */
147 #define R_CFG_BOOT 0x05
148
149 /* some fields in R_CFG_BOOT */
150 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
151 #define HFCLK_FREQ_26_MHZ (2 << 0)
152 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
153 #define HIGH_PERF_SQ (1 << 3)
154 #define CK32K_LOWPWR_EN (1 << 7)
155
156 /*----------------------------------------------------------------------*/
157
158 /* is driver active, bound to a chip? */
159 static bool inuse;
160
161 /* TWL IDCODE Register value */
162 static u32 twl_idcode;
163
164 static unsigned int twl_id;
165 unsigned int twl_rev(void)
166 {
167 return twl_id;
168 }
169 EXPORT_SYMBOL(twl_rev);
170
171 /* Structure for each TWL4030/TWL6030 Slave */
172 struct twl_client {
173 struct i2c_client *client;
174 u8 address;
175
176 /* max numb of i2c_msg required is for read =2 */
177 struct i2c_msg xfer_msg[2];
178
179 /* To lock access to xfer_msg */
180 struct mutex xfer_lock;
181 };
182
183 static struct twl_client twl_modules[TWL_NUM_SLAVES];
184
185 /* mapping the module id to slave id and base address */
186 struct twl_mapping {
187 unsigned char sid; /* Slave ID */
188 unsigned char base; /* base address */
189 };
190 static struct twl_mapping *twl_map;
191
192 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
193 /*
194 * NOTE: don't change this table without updating the
195 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
196 * so they continue to match the order in this table.
197 */
198
199 { 0, TWL4030_BASEADD_USB },
200
201 { 1, TWL4030_BASEADD_AUDIO_VOICE },
202 { 1, TWL4030_BASEADD_GPIO },
203 { 1, TWL4030_BASEADD_INTBR },
204 { 1, TWL4030_BASEADD_PIH },
205 { 1, TWL4030_BASEADD_TEST },
206
207 { 2, TWL4030_BASEADD_KEYPAD },
208 { 2, TWL4030_BASEADD_MADC },
209 { 2, TWL4030_BASEADD_INTERRUPTS },
210 { 2, TWL4030_BASEADD_LED },
211 { 2, TWL4030_BASEADD_MAIN_CHARGE },
212 { 2, TWL4030_BASEADD_PRECHARGE },
213 { 2, TWL4030_BASEADD_PWM0 },
214 { 2, TWL4030_BASEADD_PWM1 },
215 { 2, TWL4030_BASEADD_PWMA },
216 { 2, TWL4030_BASEADD_PWMB },
217 { 2, TWL5031_BASEADD_ACCESSORY },
218 { 2, TWL5031_BASEADD_INTERRUPTS },
219
220 { 3, TWL4030_BASEADD_BACKUP },
221 { 3, TWL4030_BASEADD_INT },
222 { 3, TWL4030_BASEADD_PM_MASTER },
223 { 3, TWL4030_BASEADD_PM_RECEIVER },
224 { 3, TWL4030_BASEADD_RTC },
225 { 3, TWL4030_BASEADD_SECURED_REG },
226 };
227
228 static struct twl_mapping twl6030_map[] = {
229 /*
230 * NOTE: don't change this table without updating the
231 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
232 * so they continue to match the order in this table.
233 */
234 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
235 { SUB_CHIP_ID_INVAL, TWL6030_BASEADD_AUDIO },
236 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
237 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
238 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
239
240 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
241 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
242 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
243 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
244 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
245
246 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
247 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
248 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
249 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
250 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
251
252 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
253 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
254 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
255 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
256 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
257 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
258 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
259
260 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
261 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
262 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
263 };
264
265 /*----------------------------------------------------------------------*/
266
267 /* Exported Functions */
268
269 /**
270 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
271 * @mod_no: module number
272 * @value: an array of num_bytes+1 containing data to write
273 * @reg: register address (just offset will do)
274 * @num_bytes: number of bytes to transfer
275 *
276 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
277 * valid data starts at Offset 1.
278 *
279 * Returns the result of operation - 0 is success
280 */
281 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
282 {
283 int ret;
284 int sid;
285 struct twl_client *twl;
286 struct i2c_msg *msg;
287
288 if (unlikely(mod_no > TWL_MODULE_LAST)) {
289 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
290 return -EPERM;
291 }
292 if (unlikely(!inuse)) {
293 pr_err("%s: not initialized\n", DRIVER_NAME);
294 return -EPERM;
295 }
296 sid = twl_map[mod_no].sid;
297 if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
298 pr_err("%s: module %d is not part of the pmic\n",
299 DRIVER_NAME, mod_no);
300 return -EINVAL;
301 }
302 twl = &twl_modules[sid];
303
304 mutex_lock(&twl->xfer_lock);
305 /*
306 * [MSG1]: fill the register address data
307 * fill the data Tx buffer
308 */
309 msg = &twl->xfer_msg[0];
310 msg->addr = twl->address;
311 msg->len = num_bytes + 1;
312 msg->flags = 0;
313 msg->buf = value;
314 /* over write the first byte of buffer with the register address */
315 *value = twl_map[mod_no].base + reg;
316 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
317 mutex_unlock(&twl->xfer_lock);
318
319 /* i2c_transfer returns number of messages transferred */
320 if (ret != 1) {
321 pr_err("%s: i2c_write failed to transfer all messages\n",
322 DRIVER_NAME);
323 if (ret < 0)
324 return ret;
325 else
326 return -EIO;
327 } else {
328 return 0;
329 }
330 }
331 EXPORT_SYMBOL(twl_i2c_write);
332
333 /**
334 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
335 * @mod_no: module number
336 * @value: an array of num_bytes containing data to be read
337 * @reg: register address (just offset will do)
338 * @num_bytes: number of bytes to transfer
339 *
340 * Returns result of operation - num_bytes is success else failure.
341 */
342 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
343 {
344 int ret;
345 u8 val;
346 int sid;
347 struct twl_client *twl;
348 struct i2c_msg *msg;
349
350 if (unlikely(mod_no > TWL_MODULE_LAST)) {
351 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
352 return -EPERM;
353 }
354 if (unlikely(!inuse)) {
355 pr_err("%s: not initialized\n", DRIVER_NAME);
356 return -EPERM;
357 }
358 sid = twl_map[mod_no].sid;
359 if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
360 pr_err("%s: module %d is not part of the pmic\n",
361 DRIVER_NAME, mod_no);
362 return -EINVAL;
363 }
364 twl = &twl_modules[sid];
365
366 mutex_lock(&twl->xfer_lock);
367 /* [MSG1] fill the register address data */
368 msg = &twl->xfer_msg[0];
369 msg->addr = twl->address;
370 msg->len = 1;
371 msg->flags = 0; /* Read the register value */
372 val = twl_map[mod_no].base + reg;
373 msg->buf = &val;
374 /* [MSG2] fill the data rx buffer */
375 msg = &twl->xfer_msg[1];
376 msg->addr = twl->address;
377 msg->flags = I2C_M_RD; /* Read the register value */
378 msg->len = num_bytes; /* only n bytes */
379 msg->buf = value;
380 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
381 mutex_unlock(&twl->xfer_lock);
382
383 /* i2c_transfer returns number of messages transferred */
384 if (ret != 2) {
385 pr_err("%s: i2c_read failed to transfer all messages\n",
386 DRIVER_NAME);
387 if (ret < 0)
388 return ret;
389 else
390 return -EIO;
391 } else {
392 return 0;
393 }
394 }
395 EXPORT_SYMBOL(twl_i2c_read);
396
397 /**
398 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
399 * @mod_no: module number
400 * @value: the value to be written 8 bit
401 * @reg: register address (just offset will do)
402 *
403 * Returns result of operation - 0 is success
404 */
405 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
406 {
407
408 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
409 u8 temp_buffer[2] = { 0 };
410 /* offset 1 contains the data */
411 temp_buffer[1] = value;
412 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
413 }
414 EXPORT_SYMBOL(twl_i2c_write_u8);
415
416 /**
417 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
418 * @mod_no: module number
419 * @value: the value read 8 bit
420 * @reg: register address (just offset will do)
421 *
422 * Returns result of operation - 0 is success
423 */
424 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
425 {
426 return twl_i2c_read(mod_no, value, reg, 1);
427 }
428 EXPORT_SYMBOL(twl_i2c_read_u8);
429
430 /*----------------------------------------------------------------------*/
431
432 /**
433 * twl_read_idcode_register - API to read the IDCODE register.
434 *
435 * Unlocks the IDCODE register and read the 32 bit value.
436 */
437 static int twl_read_idcode_register(void)
438 {
439 int err;
440
441 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
442 REG_UNLOCK_TEST_REG);
443 if (err) {
444 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
445 goto fail;
446 }
447
448 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
449 REG_IDCODE_7_0, 4);
450 if (err) {
451 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
452 goto fail;
453 }
454
455 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
456 if (err)
457 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
458 fail:
459 return err;
460 }
461
462 /**
463 * twl_get_type - API to get TWL Si type.
464 *
465 * Api to get the TWL Si type from IDCODE value.
466 */
467 int twl_get_type(void)
468 {
469 return TWL_SIL_TYPE(twl_idcode);
470 }
471 EXPORT_SYMBOL_GPL(twl_get_type);
472
473 /**
474 * twl_get_version - API to get TWL Si version.
475 *
476 * Api to get the TWL Si version from IDCODE value.
477 */
478 int twl_get_version(void)
479 {
480 return TWL_SIL_REV(twl_idcode);
481 }
482 EXPORT_SYMBOL_GPL(twl_get_version);
483
484 /**
485 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
486 *
487 * Api to get the TWL HFCLK rate based on BOOT_CFG register.
488 */
489 int twl_get_hfclk_rate(void)
490 {
491 u8 ctrl;
492 int rate;
493
494 twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
495
496 switch (ctrl & 0x3) {
497 case HFCLK_FREQ_19p2_MHZ:
498 rate = 19200000;
499 break;
500 case HFCLK_FREQ_26_MHZ:
501 rate = 26000000;
502 break;
503 case HFCLK_FREQ_38p4_MHZ:
504 rate = 38400000;
505 break;
506 default:
507 pr_err("TWL4030: HFCLK is not configured\n");
508 rate = -EINVAL;
509 break;
510 }
511
512 return rate;
513 }
514 EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
515
516 static struct device *
517 add_numbered_child(unsigned chip, const char *name, int num,
518 void *pdata, unsigned pdata_len,
519 bool can_wakeup, int irq0, int irq1)
520 {
521 struct platform_device *pdev;
522 struct twl_client *twl = &twl_modules[chip];
523 int status;
524
525 pdev = platform_device_alloc(name, num);
526 if (!pdev) {
527 dev_dbg(&twl->client->dev, "can't alloc dev\n");
528 status = -ENOMEM;
529 goto err;
530 }
531
532 pdev->dev.parent = &twl->client->dev;
533
534 if (pdata) {
535 status = platform_device_add_data(pdev, pdata, pdata_len);
536 if (status < 0) {
537 dev_dbg(&pdev->dev, "can't add platform_data\n");
538 goto err;
539 }
540 }
541
542 if (irq0) {
543 struct resource r[2] = {
544 { .start = irq0, .flags = IORESOURCE_IRQ, },
545 { .start = irq1, .flags = IORESOURCE_IRQ, },
546 };
547
548 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
549 if (status < 0) {
550 dev_dbg(&pdev->dev, "can't add irqs\n");
551 goto err;
552 }
553 }
554
555 status = platform_device_add(pdev);
556 if (status == 0)
557 device_init_wakeup(&pdev->dev, can_wakeup);
558
559 err:
560 if (status < 0) {
561 platform_device_put(pdev);
562 dev_err(&twl->client->dev, "can't add %s dev\n", name);
563 return ERR_PTR(status);
564 }
565 return &pdev->dev;
566 }
567
568 static inline struct device *add_child(unsigned chip, const char *name,
569 void *pdata, unsigned pdata_len,
570 bool can_wakeup, int irq0, int irq1)
571 {
572 return add_numbered_child(chip, name, -1, pdata, pdata_len,
573 can_wakeup, irq0, irq1);
574 }
575
576 static struct device *
577 add_regulator_linked(int num, struct regulator_init_data *pdata,
578 struct regulator_consumer_supply *consumers,
579 unsigned num_consumers, unsigned long features)
580 {
581 unsigned sub_chip_id;
582 struct twl_regulator_driver_data drv_data;
583
584 /* regulator framework demands init_data ... */
585 if (!pdata)
586 return NULL;
587
588 if (consumers) {
589 pdata->consumer_supplies = consumers;
590 pdata->num_consumer_supplies = num_consumers;
591 }
592
593 if (pdata->driver_data) {
594 /* If we have existing drv_data, just add the flags */
595 struct twl_regulator_driver_data *tmp;
596 tmp = pdata->driver_data;
597 tmp->features |= features;
598 } else {
599 /* add new driver data struct, used only during init */
600 drv_data.features = features;
601 drv_data.set_voltage = NULL;
602 drv_data.get_voltage = NULL;
603 drv_data.data = NULL;
604 pdata->driver_data = &drv_data;
605 }
606
607 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
608 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
609 return add_numbered_child(sub_chip_id, "twl_reg", num,
610 pdata, sizeof(*pdata), false, 0, 0);
611 }
612
613 static struct device *
614 add_regulator(int num, struct regulator_init_data *pdata,
615 unsigned long features)
616 {
617 return add_regulator_linked(num, pdata, NULL, 0, features);
618 }
619
620 /*
621 * NOTE: We know the first 8 IRQs after pdata->base_irq are
622 * for the PIH, and the next are for the PWR_INT SIH, since
623 * that's how twl_init_irq() sets things up.
624 */
625
626 static int
627 add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
628 unsigned long features)
629 {
630 struct device *child;
631 unsigned sub_chip_id;
632
633 if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) {
634 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
635 pdata->gpio, sizeof(*pdata->gpio),
636 false, irq_base + GPIO_INTR_OFFSET, 0);
637 if (IS_ERR(child))
638 return PTR_ERR(child);
639 }
640
641 if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) {
642 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
643 pdata->keypad, sizeof(*pdata->keypad),
644 true, irq_base + KEYPAD_INTR_OFFSET, 0);
645 if (IS_ERR(child))
646 return PTR_ERR(child);
647 }
648
649 if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc) {
650 child = add_child(2, "twl4030_madc",
651 pdata->madc, sizeof(*pdata->madc),
652 true, irq_base + MADC_INTR_OFFSET, 0);
653 if (IS_ERR(child))
654 return PTR_ERR(child);
655 }
656
657 if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) {
658 /*
659 * REVISIT platform_data here currently might expose the
660 * "msecure" line ... but for now we just expect board
661 * setup to tell the chip "it's always ok to SET_TIME".
662 * Eventually, Linux might become more aware of such
663 * HW security concerns, and "least privilege".
664 */
665 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
666 child = add_child(sub_chip_id, "twl_rtc",
667 NULL, 0,
668 true, irq_base + RTC_INTR_OFFSET, 0);
669 if (IS_ERR(child))
670 return PTR_ERR(child);
671 }
672
673 if (IS_ENABLED(CONFIG_PWM_TWL6030) && twl_class_is_6030()) {
674 child = add_child(TWL6030_MODULE_ID1, "twl6030-pwm", NULL, 0,
675 false, 0, 0);
676 if (IS_ERR(child))
677 return PTR_ERR(child);
678 }
679
680 if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb &&
681 twl_class_is_4030()) {
682
683 static struct regulator_consumer_supply usb1v5 = {
684 .supply = "usb1v5",
685 };
686 static struct regulator_consumer_supply usb1v8 = {
687 .supply = "usb1v8",
688 };
689 static struct regulator_consumer_supply usb3v1[] = {
690 { .supply = "usb3v1" },
691 { .supply = "bci3v1" },
692 };
693
694 /* First add the regulators so that they can be used by transceiver */
695 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
696 /* this is a template that gets copied */
697 struct regulator_init_data usb_fixed = {
698 .constraints.valid_modes_mask =
699 REGULATOR_MODE_NORMAL
700 | REGULATOR_MODE_STANDBY,
701 .constraints.valid_ops_mask =
702 REGULATOR_CHANGE_MODE
703 | REGULATOR_CHANGE_STATUS,
704 };
705
706 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
707 &usb_fixed, &usb1v5, 1,
708 features);
709 if (IS_ERR(child))
710 return PTR_ERR(child);
711
712 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
713 &usb_fixed, &usb1v8, 1,
714 features);
715 if (IS_ERR(child))
716 return PTR_ERR(child);
717
718 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
719 &usb_fixed, usb3v1, 2,
720 features);
721 if (IS_ERR(child))
722 return PTR_ERR(child);
723
724 }
725
726 child = add_child(0, "twl4030_usb",
727 pdata->usb, sizeof(*pdata->usb),
728 true,
729 /* irq0 = USB_PRES, irq1 = USB */
730 irq_base + USB_PRES_INTR_OFFSET,
731 irq_base + USB_INTR_OFFSET);
732
733 if (IS_ERR(child))
734 return PTR_ERR(child);
735
736 /* we need to connect regulators to this transceiver */
737 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) {
738 usb1v5.dev_name = dev_name(child);
739 usb1v8.dev_name = dev_name(child);
740 usb3v1[0].dev_name = dev_name(child);
741 }
742 }
743 if (IS_ENABLED(CONFIG_TWL6030_USB) && pdata->usb &&
744 twl_class_is_6030()) {
745
746 static struct regulator_consumer_supply usb3v3;
747 int regulator;
748
749 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) {
750 /* this is a template that gets copied */
751 struct regulator_init_data usb_fixed = {
752 .constraints.valid_modes_mask =
753 REGULATOR_MODE_NORMAL
754 | REGULATOR_MODE_STANDBY,
755 .constraints.valid_ops_mask =
756 REGULATOR_CHANGE_MODE
757 | REGULATOR_CHANGE_STATUS,
758 };
759
760 if (features & TWL6025_SUBCLASS) {
761 usb3v3.supply = "ldousb";
762 regulator = TWL6025_REG_LDOUSB;
763 } else {
764 usb3v3.supply = "vusb";
765 regulator = TWL6030_REG_VUSB;
766 }
767 child = add_regulator_linked(regulator, &usb_fixed,
768 &usb3v3, 1,
769 features);
770 if (IS_ERR(child))
771 return PTR_ERR(child);
772 }
773
774 pdata->usb->features = features;
775
776 child = add_child(0, "twl6030_usb",
777 pdata->usb, sizeof(*pdata->usb),
778 true,
779 /* irq1 = VBUS_PRES, irq0 = USB ID */
780 irq_base + USBOTG_INTR_OFFSET,
781 irq_base + USB_PRES_INTR_OFFSET);
782
783 if (IS_ERR(child))
784 return PTR_ERR(child);
785 /* we need to connect regulators to this transceiver */
786 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child)
787 usb3v3.dev_name = dev_name(child);
788 } else if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) &&
789 twl_class_is_6030()) {
790 if (features & TWL6025_SUBCLASS)
791 child = add_regulator(TWL6025_REG_LDOUSB,
792 pdata->ldousb, features);
793 else
794 child = add_regulator(TWL6030_REG_VUSB,
795 pdata->vusb, features);
796
797 if (IS_ERR(child))
798 return PTR_ERR(child);
799 }
800
801 if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) {
802 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
803 if (IS_ERR(child))
804 return PTR_ERR(child);
805 }
806
807 if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) {
808 child = add_child(1, "twl4030_pwrbutton",
809 NULL, 0, true, irq_base + 8 + 0, 0);
810 if (IS_ERR(child))
811 return PTR_ERR(child);
812 }
813
814 if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio &&
815 twl_class_is_4030()) {
816 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
817 child = add_child(sub_chip_id, "twl4030-audio",
818 pdata->audio, sizeof(*pdata->audio),
819 false, 0, 0);
820 if (IS_ERR(child))
821 return PTR_ERR(child);
822 }
823
824 /* twl4030 regulators */
825 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) {
826 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
827 features);
828 if (IS_ERR(child))
829 return PTR_ERR(child);
830
831 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
832 features);
833 if (IS_ERR(child))
834 return PTR_ERR(child);
835
836 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
837 features);
838 if (IS_ERR(child))
839 return PTR_ERR(child);
840
841 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
842 features);
843 if (IS_ERR(child))
844 return PTR_ERR(child);
845
846 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
847 features);
848 if (IS_ERR(child))
849 return PTR_ERR(child);
850
851 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
852 features);
853 if (IS_ERR(child))
854 return PTR_ERR(child);
855
856 child = add_regulator((features & TWL4030_VAUX2)
857 ? TWL4030_REG_VAUX2_4030
858 : TWL4030_REG_VAUX2,
859 pdata->vaux2, features);
860 if (IS_ERR(child))
861 return PTR_ERR(child);
862
863 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
864 features);
865 if (IS_ERR(child))
866 return PTR_ERR(child);
867
868 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
869 features);
870 if (IS_ERR(child))
871 return PTR_ERR(child);
872
873 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
874 features);
875 if (IS_ERR(child))
876 return PTR_ERR(child);
877 }
878
879 /* maybe add LDOs that are omitted on cost-reduced parts */
880 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET)
881 && twl_class_is_4030()) {
882 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
883 features);
884 if (IS_ERR(child))
885 return PTR_ERR(child);
886
887 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
888 features);
889 if (IS_ERR(child))
890 return PTR_ERR(child);
891
892 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
893 features);
894 if (IS_ERR(child))
895 return PTR_ERR(child);
896
897 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
898 features);
899 if (IS_ERR(child))
900 return PTR_ERR(child);
901
902 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
903 features);
904 if (IS_ERR(child))
905 return PTR_ERR(child);
906
907 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
908 features);
909 if (IS_ERR(child))
910 return PTR_ERR(child);
911 }
912
913 /* twl6030 regulators */
914 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
915 !(features & TWL6025_SUBCLASS)) {
916 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
917 features);
918 if (IS_ERR(child))
919 return PTR_ERR(child);
920
921 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
922 features);
923 if (IS_ERR(child))
924 return PTR_ERR(child);
925
926 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
927 features);
928 if (IS_ERR(child))
929 return PTR_ERR(child);
930
931 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
932 features);
933 if (IS_ERR(child))
934 return PTR_ERR(child);
935
936 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
937 features);
938 if (IS_ERR(child))
939 return PTR_ERR(child);
940
941 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
942 features);
943 if (IS_ERR(child))
944 return PTR_ERR(child);
945
946 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
947 features);
948 if (IS_ERR(child))
949 return PTR_ERR(child);
950
951 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
952 features);
953 if (IS_ERR(child))
954 return PTR_ERR(child);
955
956 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
957 features);
958 if (IS_ERR(child))
959 return PTR_ERR(child);
960
961 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
962 features);
963 if (IS_ERR(child))
964 return PTR_ERR(child);
965
966 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
967 features);
968 if (IS_ERR(child))
969 return PTR_ERR(child);
970
971 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
972 features);
973 if (IS_ERR(child))
974 return PTR_ERR(child);
975
976 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
977 features);
978 if (IS_ERR(child))
979 return PTR_ERR(child);
980
981 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
982 features);
983 if (IS_ERR(child))
984 return PTR_ERR(child);
985 }
986
987 /* 6030 and 6025 share this regulator */
988 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030()) {
989 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
990 features);
991 if (IS_ERR(child))
992 return PTR_ERR(child);
993 }
994
995 /* twl6025 regulators */
996 if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() &&
997 (features & TWL6025_SUBCLASS)) {
998 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
999 features);
1000 if (IS_ERR(child))
1001 return PTR_ERR(child);
1002
1003 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1004 features);
1005 if (IS_ERR(child))
1006 return PTR_ERR(child);
1007
1008 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1009 features);
1010 if (IS_ERR(child))
1011 return PTR_ERR(child);
1012
1013 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1014 features);
1015 if (IS_ERR(child))
1016 return PTR_ERR(child);
1017
1018 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1019 features);
1020 if (IS_ERR(child))
1021 return PTR_ERR(child);
1022
1023 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1024 features);
1025 if (IS_ERR(child))
1026 return PTR_ERR(child);
1027
1028 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1029 features);
1030 if (IS_ERR(child))
1031 return PTR_ERR(child);
1032
1033 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1034 features);
1035 if (IS_ERR(child))
1036 return PTR_ERR(child);
1037
1038 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1039 features);
1040 if (IS_ERR(child))
1041 return PTR_ERR(child);
1042
1043 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1044 features);
1045 if (IS_ERR(child))
1046 return PTR_ERR(child);
1047
1048 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1049 features);
1050 if (IS_ERR(child))
1051 return PTR_ERR(child);
1052
1053 }
1054
1055 if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci &&
1056 !(features & (TPS_SUBSET | TWL5031))) {
1057 child = add_child(3, "twl4030_bci",
1058 pdata->bci, sizeof(*pdata->bci), false,
1059 /* irq0 = CHG_PRES, irq1 = BCI */
1060 irq_base + BCI_PRES_INTR_OFFSET,
1061 irq_base + BCI_INTR_OFFSET);
1062 if (IS_ERR(child))
1063 return PTR_ERR(child);
1064 }
1065
1066 return 0;
1067 }
1068
1069 /*----------------------------------------------------------------------*/
1070
1071 /*
1072 * These three functions initialize the on-chip clock framework,
1073 * letting it generate the right frequencies for USB, MADC, and
1074 * other purposes.
1075 */
1076 static inline int __init protect_pm_master(void)
1077 {
1078 int e = 0;
1079
1080 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1081 TWL4030_PM_MASTER_PROTECT_KEY);
1082 return e;
1083 }
1084
1085 static inline int __init unprotect_pm_master(void)
1086 {
1087 int e = 0;
1088
1089 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1090 TWL4030_PM_MASTER_KEY_CFG1,
1091 TWL4030_PM_MASTER_PROTECT_KEY);
1092 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1093 TWL4030_PM_MASTER_KEY_CFG2,
1094 TWL4030_PM_MASTER_PROTECT_KEY);
1095
1096 return e;
1097 }
1098
1099 static void clocks_init(struct device *dev,
1100 struct twl4030_clock_init_data *clock)
1101 {
1102 int e = 0;
1103 struct clk *osc;
1104 u32 rate;
1105 u8 ctrl = HFCLK_FREQ_26_MHZ;
1106
1107 osc = clk_get(dev, "fck");
1108 if (IS_ERR(osc)) {
1109 printk(KERN_WARNING "Skipping twl internal clock init and "
1110 "using bootloader value (unknown osc rate)\n");
1111 return;
1112 }
1113
1114 rate = clk_get_rate(osc);
1115 clk_put(osc);
1116
1117 switch (rate) {
1118 case 19200000:
1119 ctrl = HFCLK_FREQ_19p2_MHZ;
1120 break;
1121 case 26000000:
1122 ctrl = HFCLK_FREQ_26_MHZ;
1123 break;
1124 case 38400000:
1125 ctrl = HFCLK_FREQ_38p4_MHZ;
1126 break;
1127 }
1128
1129 ctrl |= HIGH_PERF_SQ;
1130 if (clock && clock->ck32k_lowpwr_enable)
1131 ctrl |= CK32K_LOWPWR_EN;
1132
1133 e |= unprotect_pm_master();
1134 /* effect->MADC+USB ck en */
1135 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1136 e |= protect_pm_master();
1137
1138 if (e < 0)
1139 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1140 }
1141
1142 /*----------------------------------------------------------------------*/
1143
1144
1145 static int twl_remove(struct i2c_client *client)
1146 {
1147 unsigned i, num_slaves;
1148 int status;
1149
1150 if (twl_class_is_4030()) {
1151 status = twl4030_exit_irq();
1152 num_slaves = TWL_NUM_SLAVES;
1153 } else {
1154 status = twl6030_exit_irq();
1155 num_slaves = TWL_NUM_SLAVES - 1;
1156 }
1157
1158 if (status < 0)
1159 return status;
1160
1161 for (i = 0; i < num_slaves; i++) {
1162 struct twl_client *twl = &twl_modules[i];
1163
1164 if (twl->client && twl->client != client)
1165 i2c_unregister_device(twl->client);
1166 twl_modules[i].client = NULL;
1167 }
1168 inuse = false;
1169 return 0;
1170 }
1171
1172 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1173 static int __devinit
1174 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1175 {
1176 struct twl4030_platform_data *pdata = client->dev.platform_data;
1177 struct device_node *node = client->dev.of_node;
1178 struct platform_device *pdev;
1179 int irq_base = 0;
1180 int status;
1181 unsigned i, num_slaves;
1182
1183 pdev = platform_device_alloc(DRIVER_NAME, -1);
1184 if (!pdev) {
1185 dev_err(&client->dev, "can't alloc pdev\n");
1186 return -ENOMEM;
1187 }
1188
1189 status = platform_device_add(pdev);
1190 if (status) {
1191 platform_device_put(pdev);
1192 return status;
1193 }
1194
1195 if (node && !pdata) {
1196 /*
1197 * XXX: Temporary pdata until the information is correctly
1198 * retrieved by every TWL modules from DT.
1199 */
1200 pdata = devm_kzalloc(&client->dev,
1201 sizeof(struct twl4030_platform_data),
1202 GFP_KERNEL);
1203 if (!pdata) {
1204 status = -ENOMEM;
1205 goto free;
1206 }
1207 }
1208
1209 if (!pdata) {
1210 dev_dbg(&client->dev, "no platform data?\n");
1211 status = -EINVAL;
1212 goto free;
1213 }
1214
1215 platform_set_drvdata(pdev, pdata);
1216
1217 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1218 dev_dbg(&client->dev, "can't talk I2C?\n");
1219 status = -EIO;
1220 goto free;
1221 }
1222
1223 if (inuse) {
1224 dev_dbg(&client->dev, "driver is already in use\n");
1225 status = -EBUSY;
1226 goto free;
1227 }
1228
1229 if ((id->driver_data) & TWL6030_CLASS) {
1230 twl_id = TWL6030_CLASS_ID;
1231 twl_map = &twl6030_map[0];
1232 num_slaves = TWL_NUM_SLAVES - 1;
1233 } else {
1234 twl_id = TWL4030_CLASS_ID;
1235 twl_map = &twl4030_map[0];
1236 num_slaves = TWL_NUM_SLAVES;
1237 }
1238
1239 for (i = 0; i < num_slaves; i++) {
1240 struct twl_client *twl = &twl_modules[i];
1241
1242 twl->address = client->addr + i;
1243 if (i == 0) {
1244 twl->client = client;
1245 } else {
1246 twl->client = i2c_new_dummy(client->adapter,
1247 twl->address);
1248 if (!twl->client) {
1249 dev_err(&client->dev,
1250 "can't attach client %d\n", i);
1251 status = -ENOMEM;
1252 goto fail;
1253 }
1254 }
1255 mutex_init(&twl->xfer_lock);
1256 }
1257
1258 inuse = true;
1259
1260 /* setup clock framework */
1261 clocks_init(&pdev->dev, pdata->clock);
1262
1263 /* read TWL IDCODE Register */
1264 if (twl_id == TWL4030_CLASS_ID) {
1265 status = twl_read_idcode_register();
1266 WARN(status < 0, "Error: reading twl_idcode register value\n");
1267 }
1268
1269 /* load power event scripts */
1270 if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power)
1271 twl4030_power_init(pdata->power);
1272
1273 /* Maybe init the T2 Interrupt subsystem */
1274 if (client->irq) {
1275 if (twl_class_is_4030()) {
1276 twl4030_init_chip_irq(id->name);
1277 irq_base = twl4030_init_irq(&client->dev, client->irq);
1278 } else {
1279 irq_base = twl6030_init_irq(&client->dev, client->irq);
1280 }
1281
1282 if (irq_base < 0) {
1283 status = irq_base;
1284 goto fail;
1285 }
1286 }
1287
1288 /*
1289 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1290 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1291 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1292 */
1293 if (twl_class_is_4030()) {
1294 u8 temp;
1295
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 = -ENODEV;
1303 if (node)
1304 status = of_platform_populate(node, NULL, NULL, &client->dev);
1305 if (status)
1306 status = add_children(pdata, irq_base, id->driver_data);
1307
1308 fail:
1309 if (status < 0)
1310 twl_remove(client);
1311 free:
1312 if (status < 0)
1313 platform_device_unregister(pdev);
1314
1315 return status;
1316 }
1317
1318 static const struct i2c_device_id twl_ids[] = {
1319 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1320 { "twl5030", 0 }, /* T2 updated */
1321 { "twl5031", TWL5031 }, /* TWL5030 updated */
1322 { "tps65950", 0 }, /* catalog version of twl5030 */
1323 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1324 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1325 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
1326 and vibrator. Charger in USB module*/
1327 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1328 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1329 { /* end of list */ },
1330 };
1331 MODULE_DEVICE_TABLE(i2c, twl_ids);
1332
1333 /* One Client Driver , 4 Clients */
1334 static struct i2c_driver twl_driver = {
1335 .driver.name = DRIVER_NAME,
1336 .id_table = twl_ids,
1337 .probe = twl_probe,
1338 .remove = twl_remove,
1339 };
1340
1341 static int __init twl_init(void)
1342 {
1343 return i2c_add_driver(&twl_driver);
1344 }
1345 subsys_initcall(twl_init);
1346
1347 static void __exit twl_exit(void)
1348 {
1349 i2c_del_driver(&twl_driver);
1350 }
1351 module_exit(twl_exit);
1352
1353 MODULE_AUTHOR("Texas Instruments, Inc.");
1354 MODULE_DESCRIPTION("I2C Core interface for TWL");
1355 MODULE_LICENSE("GPL");
Linux 2.6 libata-dev (mirror)