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Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
[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 device_init_wakeup(&pdev->dev, can_wakeup);
572 pdev->dev.parent = &twl->client->dev;
573
574 if (pdata) {
575 status = platform_device_add_data(pdev, pdata, pdata_len);
576 if (status < 0) {
577 dev_dbg(&pdev->dev, "can't add platform_data\n");
578 goto err;
579 }
580 }
581
582 if (irq0) {
583 struct resource r[2] = {
584 { .start = irq0, .flags = IORESOURCE_IRQ, },
585 { .start = irq1, .flags = IORESOURCE_IRQ, },
586 };
587
588 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
589 if (status < 0) {
590 dev_dbg(&pdev->dev, "can't add irqs\n");
591 goto err;
592 }
593 }
594
595 status = platform_device_add(pdev);
596
597 err:
598 if (status < 0) {
599 platform_device_put(pdev);
600 dev_err(&twl->client->dev, "can't add %s dev\n", name);
601 return ERR_PTR(status);
602 }
603 return &pdev->dev;
604 }
605
606 static inline struct device *add_child(unsigned chip, const char *name,
607 void *pdata, unsigned pdata_len,
608 bool can_wakeup, int irq0, int irq1)
609 {
610 return add_numbered_child(chip, name, -1, pdata, pdata_len,
611 can_wakeup, irq0, irq1);
612 }
613
614 static struct device *
615 add_regulator_linked(int num, struct regulator_init_data *pdata,
616 struct regulator_consumer_supply *consumers,
617 unsigned num_consumers, unsigned long features)
618 {
619 unsigned sub_chip_id;
620 struct twl_regulator_driver_data drv_data;
621
622 /* regulator framework demands init_data ... */
623 if (!pdata)
624 return NULL;
625
626 if (consumers) {
627 pdata->consumer_supplies = consumers;
628 pdata->num_consumer_supplies = num_consumers;
629 }
630
631 if (pdata->driver_data) {
632 /* If we have existing drv_data, just add the flags */
633 struct twl_regulator_driver_data *tmp;
634 tmp = pdata->driver_data;
635 tmp->features |= features;
636 } else {
637 /* add new driver data struct, used only during init */
638 drv_data.features = features;
639 drv_data.set_voltage = NULL;
640 drv_data.get_voltage = NULL;
641 drv_data.data = NULL;
642 pdata->driver_data = &drv_data;
643 }
644
645 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
646 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
647 return add_numbered_child(sub_chip_id, "twl_reg", num,
648 pdata, sizeof(*pdata), false, 0, 0);
649 }
650
651 static struct device *
652 add_regulator(int num, struct regulator_init_data *pdata,
653 unsigned long features)
654 {
655 return add_regulator_linked(num, pdata, NULL, 0, features);
656 }
657
658 /*
659 * NOTE: We know the first 8 IRQs after pdata->base_irq are
660 * for the PIH, and the next are for the PWR_INT SIH, since
661 * that's how twl_init_irq() sets things up.
662 */
663
664 static int
665 add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
666 unsigned long features)
667 {
668 struct device *child;
669 unsigned sub_chip_id;
670
671 if (twl_has_gpio() && pdata->gpio) {
672 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
673 pdata->gpio, sizeof(*pdata->gpio),
674 false, irq_base + GPIO_INTR_OFFSET, 0);
675 if (IS_ERR(child))
676 return PTR_ERR(child);
677 }
678
679 if (twl_has_keypad() && pdata->keypad) {
680 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
681 pdata->keypad, sizeof(*pdata->keypad),
682 true, irq_base + KEYPAD_INTR_OFFSET, 0);
683 if (IS_ERR(child))
684 return PTR_ERR(child);
685 }
686
687 if (twl_has_madc() && pdata->madc) {
688 child = add_child(2, "twl4030_madc",
689 pdata->madc, sizeof(*pdata->madc),
690 true, irq_base + MADC_INTR_OFFSET, 0);
691 if (IS_ERR(child))
692 return PTR_ERR(child);
693 }
694
695 if (twl_has_rtc()) {
696 /*
697 * REVISIT platform_data here currently might expose the
698 * "msecure" line ... but for now we just expect board
699 * setup to tell the chip "it's always ok to SET_TIME".
700 * Eventually, Linux might become more aware of such
701 * HW security concerns, and "least privilege".
702 */
703 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
704 child = add_child(sub_chip_id, "twl_rtc",
705 NULL, 0,
706 true, irq_base + RTC_INTR_OFFSET, 0);
707 if (IS_ERR(child))
708 return PTR_ERR(child);
709 }
710
711 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
712
713 static struct regulator_consumer_supply usb1v5 = {
714 .supply = "usb1v5",
715 };
716 static struct regulator_consumer_supply usb1v8 = {
717 .supply = "usb1v8",
718 };
719 static struct regulator_consumer_supply usb3v1 = {
720 .supply = "usb3v1",
721 };
722
723 /* First add the regulators so that they can be used by transceiver */
724 if (twl_has_regulator()) {
725 /* this is a template that gets copied */
726 struct regulator_init_data usb_fixed = {
727 .constraints.valid_modes_mask =
728 REGULATOR_MODE_NORMAL
729 | REGULATOR_MODE_STANDBY,
730 .constraints.valid_ops_mask =
731 REGULATOR_CHANGE_MODE
732 | REGULATOR_CHANGE_STATUS,
733 };
734
735 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
736 &usb_fixed, &usb1v5, 1,
737 features);
738 if (IS_ERR(child))
739 return PTR_ERR(child);
740
741 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
742 &usb_fixed, &usb1v8, 1,
743 features);
744 if (IS_ERR(child))
745 return PTR_ERR(child);
746
747 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
748 &usb_fixed, &usb3v1, 1,
749 features);
750 if (IS_ERR(child))
751 return PTR_ERR(child);
752
753 }
754
755 child = add_child(0, "twl4030_usb",
756 pdata->usb, sizeof(*pdata->usb),
757 true,
758 /* irq0 = USB_PRES, irq1 = USB */
759 irq_base + USB_PRES_INTR_OFFSET,
760 irq_base + USB_INTR_OFFSET);
761
762 if (IS_ERR(child))
763 return PTR_ERR(child);
764
765 /* we need to connect regulators to this transceiver */
766 if (twl_has_regulator() && child) {
767 usb1v5.dev_name = dev_name(child);
768 usb1v8.dev_name = dev_name(child);
769 usb3v1.dev_name = dev_name(child);
770 }
771 }
772 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
773
774 static struct regulator_consumer_supply usb3v3;
775 int regulator;
776
777 if (twl_has_regulator()) {
778 /* this is a template that gets copied */
779 struct regulator_init_data usb_fixed = {
780 .constraints.valid_modes_mask =
781 REGULATOR_MODE_NORMAL
782 | REGULATOR_MODE_STANDBY,
783 .constraints.valid_ops_mask =
784 REGULATOR_CHANGE_MODE
785 | REGULATOR_CHANGE_STATUS,
786 };
787
788 if (features & TWL6025_SUBCLASS) {
789 usb3v3.supply = "ldousb";
790 regulator = TWL6025_REG_LDOUSB;
791 } else {
792 usb3v3.supply = "vusb";
793 regulator = TWL6030_REG_VUSB;
794 }
795 child = add_regulator_linked(regulator, &usb_fixed,
796 &usb3v3, 1,
797 features);
798 if (IS_ERR(child))
799 return PTR_ERR(child);
800 }
801
802 pdata->usb->features = features;
803
804 child = add_child(0, "twl6030_usb",
805 pdata->usb, sizeof(*pdata->usb),
806 true,
807 /* irq1 = VBUS_PRES, irq0 = USB ID */
808 irq_base + USBOTG_INTR_OFFSET,
809 irq_base + USB_PRES_INTR_OFFSET);
810
811 if (IS_ERR(child))
812 return PTR_ERR(child);
813 /* we need to connect regulators to this transceiver */
814 if (twl_has_regulator() && child)
815 usb3v3.dev_name = dev_name(child);
816 } else if (twl_has_regulator() && twl_class_is_6030()) {
817 if (features & TWL6025_SUBCLASS)
818 child = add_regulator(TWL6025_REG_LDOUSB,
819 pdata->ldousb, features);
820 else
821 child = add_regulator(TWL6030_REG_VUSB,
822 pdata->vusb, features);
823
824 if (IS_ERR(child))
825 return PTR_ERR(child);
826 }
827
828 if (twl_has_watchdog() && twl_class_is_4030()) {
829 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
830 if (IS_ERR(child))
831 return PTR_ERR(child);
832 }
833
834 if (twl_has_pwrbutton() && twl_class_is_4030()) {
835 child = add_child(1, "twl4030_pwrbutton",
836 NULL, 0, true, irq_base + 8 + 0, 0);
837 if (IS_ERR(child))
838 return PTR_ERR(child);
839 }
840
841 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
842 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
843 child = add_child(sub_chip_id, "twl4030-audio",
844 pdata->audio, sizeof(*pdata->audio),
845 false, 0, 0);
846 if (IS_ERR(child))
847 return PTR_ERR(child);
848 }
849
850 /* twl4030 regulators */
851 if (twl_has_regulator() && twl_class_is_4030()) {
852 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
853 features);
854 if (IS_ERR(child))
855 return PTR_ERR(child);
856
857 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
858 features);
859 if (IS_ERR(child))
860 return PTR_ERR(child);
861
862 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
863 features);
864 if (IS_ERR(child))
865 return PTR_ERR(child);
866
867 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
868 features);
869 if (IS_ERR(child))
870 return PTR_ERR(child);
871
872 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
873 features);
874 if (IS_ERR(child))
875 return PTR_ERR(child);
876
877 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
878 features);
879 if (IS_ERR(child))
880 return PTR_ERR(child);
881
882 child = add_regulator((features & TWL4030_VAUX2)
883 ? TWL4030_REG_VAUX2_4030
884 : TWL4030_REG_VAUX2,
885 pdata->vaux2, features);
886 if (IS_ERR(child))
887 return PTR_ERR(child);
888
889 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
890 features);
891 if (IS_ERR(child))
892 return PTR_ERR(child);
893
894 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
895 features);
896 if (IS_ERR(child))
897 return PTR_ERR(child);
898
899 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
900 features);
901 if (IS_ERR(child))
902 return PTR_ERR(child);
903 }
904
905 /* maybe add LDOs that are omitted on cost-reduced parts */
906 if (twl_has_regulator() && !(features & TPS_SUBSET)
907 && twl_class_is_4030()) {
908 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
909 features);
910 if (IS_ERR(child))
911 return PTR_ERR(child);
912
913 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
914 features);
915 if (IS_ERR(child))
916 return PTR_ERR(child);
917
918 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
919 features);
920 if (IS_ERR(child))
921 return PTR_ERR(child);
922
923 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
924 features);
925 if (IS_ERR(child))
926 return PTR_ERR(child);
927
928 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
929 features);
930 if (IS_ERR(child))
931 return PTR_ERR(child);
932
933 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
934 features);
935 if (IS_ERR(child))
936 return PTR_ERR(child);
937 }
938
939 /* twl6030 regulators */
940 if (twl_has_regulator() && twl_class_is_6030() &&
941 !(features & TWL6025_SUBCLASS)) {
942 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
943 features);
944 if (IS_ERR(child))
945 return PTR_ERR(child);
946
947 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
948 features);
949 if (IS_ERR(child))
950 return PTR_ERR(child);
951
952 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
953 features);
954 if (IS_ERR(child))
955 return PTR_ERR(child);
956
957 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
958 features);
959 if (IS_ERR(child))
960 return PTR_ERR(child);
961
962 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
963 features);
964 if (IS_ERR(child))
965 return PTR_ERR(child);
966
967 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
968 features);
969 if (IS_ERR(child))
970 return PTR_ERR(child);
971
972 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
973 features);
974 if (IS_ERR(child))
975 return PTR_ERR(child);
976
977 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
978 features);
979 if (IS_ERR(child))
980 return PTR_ERR(child);
981
982 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
983 features);
984 if (IS_ERR(child))
985 return PTR_ERR(child);
986
987 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
988 features);
989 if (IS_ERR(child))
990 return PTR_ERR(child);
991
992 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
993 features);
994 if (IS_ERR(child))
995 return PTR_ERR(child);
996
997 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
998 features);
999 if (IS_ERR(child))
1000 return PTR_ERR(child);
1001
1002 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
1003 features);
1004 if (IS_ERR(child))
1005 return PTR_ERR(child);
1006
1007 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
1008 features);
1009 if (IS_ERR(child))
1010 return PTR_ERR(child);
1011 }
1012
1013 /* 6030 and 6025 share this regulator */
1014 if (twl_has_regulator() && twl_class_is_6030()) {
1015 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
1016 features);
1017 if (IS_ERR(child))
1018 return PTR_ERR(child);
1019 }
1020
1021 /* twl6025 regulators */
1022 if (twl_has_regulator() && twl_class_is_6030() &&
1023 (features & TWL6025_SUBCLASS)) {
1024 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
1025 features);
1026 if (IS_ERR(child))
1027 return PTR_ERR(child);
1028
1029 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1030 features);
1031 if (IS_ERR(child))
1032 return PTR_ERR(child);
1033
1034 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1035 features);
1036 if (IS_ERR(child))
1037 return PTR_ERR(child);
1038
1039 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1040 features);
1041 if (IS_ERR(child))
1042 return PTR_ERR(child);
1043
1044 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1045 features);
1046 if (IS_ERR(child))
1047 return PTR_ERR(child);
1048
1049 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1050 features);
1051 if (IS_ERR(child))
1052 return PTR_ERR(child);
1053
1054 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1055 features);
1056 if (IS_ERR(child))
1057 return PTR_ERR(child);
1058
1059 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1060 features);
1061 if (IS_ERR(child))
1062 return PTR_ERR(child);
1063
1064 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1065 features);
1066 if (IS_ERR(child))
1067 return PTR_ERR(child);
1068
1069 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1070 features);
1071 if (IS_ERR(child))
1072 return PTR_ERR(child);
1073
1074 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1075 features);
1076 if (IS_ERR(child))
1077 return PTR_ERR(child);
1078
1079 }
1080
1081 if (twl_has_bci() && pdata->bci &&
1082 !(features & (TPS_SUBSET | TWL5031))) {
1083 child = add_child(3, "twl4030_bci",
1084 pdata->bci, sizeof(*pdata->bci), false,
1085 /* irq0 = CHG_PRES, irq1 = BCI */
1086 irq_base + BCI_PRES_INTR_OFFSET,
1087 irq_base + BCI_INTR_OFFSET);
1088 if (IS_ERR(child))
1089 return PTR_ERR(child);
1090 }
1091
1092 return 0;
1093 }
1094
1095 /*----------------------------------------------------------------------*/
1096
1097 /*
1098 * These three functions initialize the on-chip clock framework,
1099 * letting it generate the right frequencies for USB, MADC, and
1100 * other purposes.
1101 */
1102 static inline int __init protect_pm_master(void)
1103 {
1104 int e = 0;
1105
1106 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1107 TWL4030_PM_MASTER_PROTECT_KEY);
1108 return e;
1109 }
1110
1111 static inline int __init unprotect_pm_master(void)
1112 {
1113 int e = 0;
1114
1115 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1116 TWL4030_PM_MASTER_KEY_CFG1,
1117 TWL4030_PM_MASTER_PROTECT_KEY);
1118 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1119 TWL4030_PM_MASTER_KEY_CFG2,
1120 TWL4030_PM_MASTER_PROTECT_KEY);
1121
1122 return e;
1123 }
1124
1125 static void clocks_init(struct device *dev,
1126 struct twl4030_clock_init_data *clock)
1127 {
1128 int e = 0;
1129 struct clk *osc;
1130 u32 rate;
1131 u8 ctrl = HFCLK_FREQ_26_MHZ;
1132
1133 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1134 if (cpu_is_omap2430())
1135 osc = clk_get(dev, "osc_ck");
1136 else
1137 osc = clk_get(dev, "osc_sys_ck");
1138
1139 if (IS_ERR(osc)) {
1140 printk(KERN_WARNING "Skipping twl internal clock init and "
1141 "using bootloader value (unknown osc rate)\n");
1142 return;
1143 }
1144
1145 rate = clk_get_rate(osc);
1146 clk_put(osc);
1147
1148 #else
1149 /* REVISIT for non-OMAP systems, pass the clock rate from
1150 * board init code, using platform_data.
1151 */
1152 osc = ERR_PTR(-EIO);
1153
1154 printk(KERN_WARNING "Skipping twl internal clock init and "
1155 "using bootloader value (unknown osc rate)\n");
1156
1157 return;
1158 #endif
1159
1160 switch (rate) {
1161 case 19200000:
1162 ctrl = HFCLK_FREQ_19p2_MHZ;
1163 break;
1164 case 26000000:
1165 ctrl = HFCLK_FREQ_26_MHZ;
1166 break;
1167 case 38400000:
1168 ctrl = HFCLK_FREQ_38p4_MHZ;
1169 break;
1170 }
1171
1172 ctrl |= HIGH_PERF_SQ;
1173 if (clock && clock->ck32k_lowpwr_enable)
1174 ctrl |= CK32K_LOWPWR_EN;
1175
1176 e |= unprotect_pm_master();
1177 /* effect->MADC+USB ck en */
1178 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1179 e |= protect_pm_master();
1180
1181 if (e < 0)
1182 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1183 }
1184
1185 /*----------------------------------------------------------------------*/
1186
1187
1188 static int twl_remove(struct i2c_client *client)
1189 {
1190 unsigned i, num_slaves;
1191 int status;
1192
1193 if (twl_class_is_4030()) {
1194 status = twl4030_exit_irq();
1195 num_slaves = TWL_NUM_SLAVES;
1196 } else {
1197 status = twl6030_exit_irq();
1198 num_slaves = TWL_NUM_SLAVES - 1;
1199 }
1200
1201 if (status < 0)
1202 return status;
1203
1204 for (i = 0; i < num_slaves; i++) {
1205 struct twl_client *twl = &twl_modules[i];
1206
1207 if (twl->client && twl->client != client)
1208 i2c_unregister_device(twl->client);
1209 twl_modules[i].client = NULL;
1210 }
1211 inuse = false;
1212 return 0;
1213 }
1214
1215 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1216 static int __devinit
1217 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1218 {
1219 struct twl4030_platform_data *pdata = client->dev.platform_data;
1220 struct device_node *node = client->dev.of_node;
1221 int irq_base = 0;
1222 int status;
1223 unsigned i, num_slaves;
1224
1225 if (node && !pdata) {
1226 /*
1227 * XXX: Temporary pdata until the information is correctly
1228 * retrieved by every TWL modules from DT.
1229 */
1230 pdata = devm_kzalloc(&client->dev,
1231 sizeof(struct twl4030_platform_data),
1232 GFP_KERNEL);
1233 if (!pdata)
1234 return -ENOMEM;
1235 }
1236
1237 if (!pdata) {
1238 dev_dbg(&client->dev, "no platform data?\n");
1239 return -EINVAL;
1240 }
1241
1242 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1243 dev_dbg(&client->dev, "can't talk I2C?\n");
1244 return -EIO;
1245 }
1246
1247 if (inuse) {
1248 dev_dbg(&client->dev, "driver is already in use\n");
1249 return -EBUSY;
1250 }
1251
1252 if ((id->driver_data) & TWL6030_CLASS) {
1253 twl_id = TWL6030_CLASS_ID;
1254 twl_map = &twl6030_map[0];
1255 num_slaves = TWL_NUM_SLAVES - 1;
1256 } else {
1257 twl_id = TWL4030_CLASS_ID;
1258 twl_map = &twl4030_map[0];
1259 num_slaves = TWL_NUM_SLAVES;
1260 }
1261
1262 for (i = 0; i < num_slaves; i++) {
1263 struct twl_client *twl = &twl_modules[i];
1264
1265 twl->address = client->addr + i;
1266 if (i == 0) {
1267 twl->client = client;
1268 } else {
1269 twl->client = i2c_new_dummy(client->adapter,
1270 twl->address);
1271 if (!twl->client) {
1272 dev_err(&client->dev,
1273 "can't attach client %d\n", i);
1274 status = -ENOMEM;
1275 goto fail;
1276 }
1277 }
1278 mutex_init(&twl->xfer_lock);
1279 }
1280
1281 inuse = true;
1282
1283 /* setup clock framework */
1284 clocks_init(&client->dev, pdata->clock);
1285
1286 /* read TWL IDCODE Register */
1287 if (twl_id == TWL4030_CLASS_ID) {
1288 status = twl_read_idcode_register();
1289 WARN(status < 0, "Error: reading twl_idcode register value\n");
1290 }
1291
1292 /* load power event scripts */
1293 if (twl_has_power() && pdata->power)
1294 twl4030_power_init(pdata->power);
1295
1296 /* Maybe init the T2 Interrupt subsystem */
1297 if (client->irq) {
1298 if (twl_class_is_4030()) {
1299 twl4030_init_chip_irq(id->name);
1300 irq_base = twl4030_init_irq(&client->dev, client->irq);
1301 } else {
1302 irq_base = twl6030_init_irq(&client->dev, client->irq);
1303 }
1304
1305 if (irq_base < 0) {
1306 status = irq_base;
1307 goto fail;
1308 }
1309 }
1310
1311 /*
1312 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1313 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1314 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1315 */
1316 if (twl_class_is_4030()) {
1317 u8 temp;
1318
1319 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1320 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1321 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1322 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1323 }
1324
1325 status = -ENODEV;
1326 if (node)
1327 status = of_platform_populate(node, NULL, NULL, &client->dev);
1328 if (status)
1329 status = add_children(pdata, irq_base, id->driver_data);
1330
1331 fail:
1332 if (status < 0)
1333 twl_remove(client);
1334
1335 return status;
1336 }
1337
1338 static const struct i2c_device_id twl_ids[] = {
1339 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1340 { "twl5030", 0 }, /* T2 updated */
1341 { "twl5031", TWL5031 }, /* TWL5030 updated */
1342 { "tps65950", 0 }, /* catalog version of twl5030 */
1343 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1344 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1345 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
1346 and vibrator. Charger in USB module*/
1347 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1348 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1349 { /* end of list */ },
1350 };
1351 MODULE_DEVICE_TABLE(i2c, twl_ids);
1352
1353 /* One Client Driver , 4 Clients */
1354 static struct i2c_driver twl_driver = {
1355 .driver.name = DRIVER_NAME,
1356 .id_table = twl_ids,
1357 .probe = twl_probe,
1358 .remove = twl_remove,
1359 };
1360
1361 static int __init twl_init(void)
1362 {
1363 return i2c_add_driver(&twl_driver);
1364 }
1365 subsys_initcall(twl_init);
1366
1367 static void __exit twl_exit(void)
1368 {
1369 i2c_del_driver(&twl_driver);
1370 }
1371 module_exit(twl_exit);
1372
1373 MODULE_AUTHOR("Texas Instruments, Inc.");
1374 MODULE_DESCRIPTION("I2C Core interface for TWL");
1375 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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