1/*
2 * wm831x-core.c  --  Device access for Wolfson WM831x PMICs
3 *
4 * Copyright 2009 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 *  This program is free software; you can redistribute  it and/or modify it
9 *  under  the terms of  the GNU General  Public License as published by the
10 *  Free Software Foundation;  either version 2 of the  License, or (at your
11 *  option) any later version.
12 *
13 */
14
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/bcd.h>
18#include <linux/delay.h>
19#include <linux/mfd/core.h>
20#include <linux/slab.h>
21#include <linux/err.h>
22
23#include <linux/mfd/wm831x/core.h>
24#include <linux/mfd/wm831x/pdata.h>
25#include <linux/mfd/wm831x/irq.h>
26#include <linux/mfd/wm831x/auxadc.h>
27#include <linux/mfd/wm831x/otp.h>
28#include <linux/mfd/wm831x/pmu.h>
29#include <linux/mfd/wm831x/regulator.h>
30
31/* Current settings - values are 2*2^(reg_val/4) microamps.  These are
32 * exported since they are used by multiple drivers.
33 */
34int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
35	2,
36	2,
37	3,
38	3,
39	4,
40	5,
41	6,
42	7,
43	8,
44	10,
45	11,
46	13,
47	16,
48	19,
49	23,
50	27,
51	32,
52	38,
53	45,
54	54,
55	64,
56	76,
57	91,
58	108,
59	128,
60	152,
61	181,
62	215,
63	256,
64	304,
65	362,
66	431,
67	512,
68	609,
69	724,
70	861,
71	1024,
72	1218,
73	1448,
74	1722,
75	2048,
76	2435,
77	2896,
78	3444,
79	4096,
80	4871,
81	5793,
82	6889,
83	8192,
84	9742,
85	11585,
86	13777,
87	16384,
88	19484,
89	23170,
90	27554,
91};
92EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
93
94static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
95{
96	if (!wm831x->locked)
97		return 0;
98
99	switch (reg) {
100	case WM831X_WATCHDOG:
101	case WM831X_DC4_CONTROL:
102	case WM831X_ON_PIN_CONTROL:
103	case WM831X_BACKUP_CHARGER_CONTROL:
104	case WM831X_CHARGER_CONTROL_1:
105	case WM831X_CHARGER_CONTROL_2:
106		return 1;
107
108	default:
109		return 0;
110	}
111}
112
113/**
114 * wm831x_reg_unlock: Unlock user keyed registers
115 *
116 * The WM831x has a user key preventing writes to particularly
117 * critical registers.  This function locks those registers,
118 * allowing writes to them.
119 */
120void wm831x_reg_lock(struct wm831x *wm831x)
121{
122	int ret;
123
124	ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
125	if (ret == 0) {
126		dev_vdbg(wm831x->dev, "Registers locked\n");
127
128		mutex_lock(&wm831x->io_lock);
129		WARN_ON(wm831x->locked);
130		wm831x->locked = 1;
131		mutex_unlock(&wm831x->io_lock);
132	} else {
133		dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
134	}
135
136}
137EXPORT_SYMBOL_GPL(wm831x_reg_lock);
138
139/**
140 * wm831x_reg_unlock: Unlock user keyed registers
141 *
142 * The WM831x has a user key preventing writes to particularly
143 * critical registers.  This function locks those registers,
144 * preventing spurious writes.
145 */
146int wm831x_reg_unlock(struct wm831x *wm831x)
147{
148	int ret;
149
150	/* 0x9716 is the value required to unlock the registers */
151	ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
152	if (ret == 0) {
153		dev_vdbg(wm831x->dev, "Registers unlocked\n");
154
155		mutex_lock(&wm831x->io_lock);
156		WARN_ON(!wm831x->locked);
157		wm831x->locked = 0;
158		mutex_unlock(&wm831x->io_lock);
159	}
160
161	return ret;
162}
163EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
164
165static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
166{
167	switch (reg) {
168	case WM831X_RESET_ID:
169	case WM831X_REVISION:
170	case WM831X_PARENT_ID:
171	case WM831X_SYSVDD_CONTROL:
172	case WM831X_THERMAL_MONITORING:
173	case WM831X_POWER_STATE:
174	case WM831X_WATCHDOG:
175	case WM831X_ON_PIN_CONTROL:
176	case WM831X_RESET_CONTROL:
177	case WM831X_CONTROL_INTERFACE:
178	case WM831X_SECURITY_KEY:
179	case WM831X_SOFTWARE_SCRATCH:
180	case WM831X_OTP_CONTROL:
181	case WM831X_GPIO_LEVEL:
182	case WM831X_SYSTEM_STATUS:
183	case WM831X_ON_SOURCE:
184	case WM831X_OFF_SOURCE:
185	case WM831X_SYSTEM_INTERRUPTS:
186	case WM831X_INTERRUPT_STATUS_1:
187	case WM831X_INTERRUPT_STATUS_2:
188	case WM831X_INTERRUPT_STATUS_3:
189	case WM831X_INTERRUPT_STATUS_4:
190	case WM831X_INTERRUPT_STATUS_5:
191	case WM831X_IRQ_CONFIG:
192	case WM831X_SYSTEM_INTERRUPTS_MASK:
193	case WM831X_INTERRUPT_STATUS_1_MASK:
194	case WM831X_INTERRUPT_STATUS_2_MASK:
195	case WM831X_INTERRUPT_STATUS_3_MASK:
196	case WM831X_INTERRUPT_STATUS_4_MASK:
197	case WM831X_INTERRUPT_STATUS_5_MASK:
198	case WM831X_RTC_WRITE_COUNTER:
199	case WM831X_RTC_TIME_1:
200	case WM831X_RTC_TIME_2:
201	case WM831X_RTC_ALARM_1:
202	case WM831X_RTC_ALARM_2:
203	case WM831X_RTC_CONTROL:
204	case WM831X_RTC_TRIM:
205	case WM831X_TOUCH_CONTROL_1:
206	case WM831X_TOUCH_CONTROL_2:
207	case WM831X_TOUCH_DATA_X:
208	case WM831X_TOUCH_DATA_Y:
209	case WM831X_TOUCH_DATA_Z:
210	case WM831X_AUXADC_DATA:
211	case WM831X_AUXADC_CONTROL:
212	case WM831X_AUXADC_SOURCE:
213	case WM831X_COMPARATOR_CONTROL:
214	case WM831X_COMPARATOR_1:
215	case WM831X_COMPARATOR_2:
216	case WM831X_COMPARATOR_3:
217	case WM831X_COMPARATOR_4:
218	case WM831X_GPIO1_CONTROL:
219	case WM831X_GPIO2_CONTROL:
220	case WM831X_GPIO3_CONTROL:
221	case WM831X_GPIO4_CONTROL:
222	case WM831X_GPIO5_CONTROL:
223	case WM831X_GPIO6_CONTROL:
224	case WM831X_GPIO7_CONTROL:
225	case WM831X_GPIO8_CONTROL:
226	case WM831X_GPIO9_CONTROL:
227	case WM831X_GPIO10_CONTROL:
228	case WM831X_GPIO11_CONTROL:
229	case WM831X_GPIO12_CONTROL:
230	case WM831X_GPIO13_CONTROL:
231	case WM831X_GPIO14_CONTROL:
232	case WM831X_GPIO15_CONTROL:
233	case WM831X_GPIO16_CONTROL:
234	case WM831X_CHARGER_CONTROL_1:
235	case WM831X_CHARGER_CONTROL_2:
236	case WM831X_CHARGER_STATUS:
237	case WM831X_BACKUP_CHARGER_CONTROL:
238	case WM831X_STATUS_LED_1:
239	case WM831X_STATUS_LED_2:
240	case WM831X_CURRENT_SINK_1:
241	case WM831X_CURRENT_SINK_2:
242	case WM831X_DCDC_ENABLE:
243	case WM831X_LDO_ENABLE:
244	case WM831X_DCDC_STATUS:
245	case WM831X_LDO_STATUS:
246	case WM831X_DCDC_UV_STATUS:
247	case WM831X_LDO_UV_STATUS:
248	case WM831X_DC1_CONTROL_1:
249	case WM831X_DC1_CONTROL_2:
250	case WM831X_DC1_ON_CONFIG:
251	case WM831X_DC1_SLEEP_CONTROL:
252	case WM831X_DC1_DVS_CONTROL:
253	case WM831X_DC2_CONTROL_1:
254	case WM831X_DC2_CONTROL_2:
255	case WM831X_DC2_ON_CONFIG:
256	case WM831X_DC2_SLEEP_CONTROL:
257	case WM831X_DC2_DVS_CONTROL:
258	case WM831X_DC3_CONTROL_1:
259	case WM831X_DC3_CONTROL_2:
260	case WM831X_DC3_ON_CONFIG:
261	case WM831X_DC3_SLEEP_CONTROL:
262	case WM831X_DC4_CONTROL:
263	case WM831X_DC4_SLEEP_CONTROL:
264	case WM831X_EPE1_CONTROL:
265	case WM831X_EPE2_CONTROL:
266	case WM831X_LDO1_CONTROL:
267	case WM831X_LDO1_ON_CONTROL:
268	case WM831X_LDO1_SLEEP_CONTROL:
269	case WM831X_LDO2_CONTROL:
270	case WM831X_LDO2_ON_CONTROL:
271	case WM831X_LDO2_SLEEP_CONTROL:
272	case WM831X_LDO3_CONTROL:
273	case WM831X_LDO3_ON_CONTROL:
274	case WM831X_LDO3_SLEEP_CONTROL:
275	case WM831X_LDO4_CONTROL:
276	case WM831X_LDO4_ON_CONTROL:
277	case WM831X_LDO4_SLEEP_CONTROL:
278	case WM831X_LDO5_CONTROL:
279	case WM831X_LDO5_ON_CONTROL:
280	case WM831X_LDO5_SLEEP_CONTROL:
281	case WM831X_LDO6_CONTROL:
282	case WM831X_LDO6_ON_CONTROL:
283	case WM831X_LDO6_SLEEP_CONTROL:
284	case WM831X_LDO7_CONTROL:
285	case WM831X_LDO7_ON_CONTROL:
286	case WM831X_LDO7_SLEEP_CONTROL:
287	case WM831X_LDO8_CONTROL:
288	case WM831X_LDO8_ON_CONTROL:
289	case WM831X_LDO8_SLEEP_CONTROL:
290	case WM831X_LDO9_CONTROL:
291	case WM831X_LDO9_ON_CONTROL:
292	case WM831X_LDO9_SLEEP_CONTROL:
293	case WM831X_LDO10_CONTROL:
294	case WM831X_LDO10_ON_CONTROL:
295	case WM831X_LDO10_SLEEP_CONTROL:
296	case WM831X_LDO11_ON_CONTROL:
297	case WM831X_LDO11_SLEEP_CONTROL:
298	case WM831X_POWER_GOOD_SOURCE_1:
299	case WM831X_POWER_GOOD_SOURCE_2:
300	case WM831X_CLOCK_CONTROL_1:
301	case WM831X_CLOCK_CONTROL_2:
302	case WM831X_FLL_CONTROL_1:
303	case WM831X_FLL_CONTROL_2:
304	case WM831X_FLL_CONTROL_3:
305	case WM831X_FLL_CONTROL_4:
306	case WM831X_FLL_CONTROL_5:
307	case WM831X_UNIQUE_ID_1:
308	case WM831X_UNIQUE_ID_2:
309	case WM831X_UNIQUE_ID_3:
310	case WM831X_UNIQUE_ID_4:
311	case WM831X_UNIQUE_ID_5:
312	case WM831X_UNIQUE_ID_6:
313	case WM831X_UNIQUE_ID_7:
314	case WM831X_UNIQUE_ID_8:
315	case WM831X_FACTORY_OTP_ID:
316	case WM831X_FACTORY_OTP_1:
317	case WM831X_FACTORY_OTP_2:
318	case WM831X_FACTORY_OTP_3:
319	case WM831X_FACTORY_OTP_4:
320	case WM831X_FACTORY_OTP_5:
321	case WM831X_CUSTOMER_OTP_ID:
322	case WM831X_DC1_OTP_CONTROL:
323	case WM831X_DC2_OTP_CONTROL:
324	case WM831X_DC3_OTP_CONTROL:
325	case WM831X_LDO1_2_OTP_CONTROL:
326	case WM831X_LDO3_4_OTP_CONTROL:
327	case WM831X_LDO5_6_OTP_CONTROL:
328	case WM831X_LDO7_8_OTP_CONTROL:
329	case WM831X_LDO9_10_OTP_CONTROL:
330	case WM831X_LDO11_EPE_CONTROL:
331	case WM831X_GPIO1_OTP_CONTROL:
332	case WM831X_GPIO2_OTP_CONTROL:
333	case WM831X_GPIO3_OTP_CONTROL:
334	case WM831X_GPIO4_OTP_CONTROL:
335	case WM831X_GPIO5_OTP_CONTROL:
336	case WM831X_GPIO6_OTP_CONTROL:
337	case WM831X_DBE_CHECK_DATA:
338		return true;
339	default:
340		return false;
341	}
342}
343
344static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
345{
346	struct wm831x *wm831x = dev_get_drvdata(dev);
347
348	if (wm831x_reg_locked(wm831x, reg))
349		return false;
350
351	switch (reg) {
352	case WM831X_SYSVDD_CONTROL:
353	case WM831X_THERMAL_MONITORING:
354	case WM831X_POWER_STATE:
355	case WM831X_WATCHDOG:
356	case WM831X_ON_PIN_CONTROL:
357	case WM831X_RESET_CONTROL:
358	case WM831X_CONTROL_INTERFACE:
359	case WM831X_SECURITY_KEY:
360	case WM831X_SOFTWARE_SCRATCH:
361	case WM831X_OTP_CONTROL:
362	case WM831X_GPIO_LEVEL:
363	case WM831X_INTERRUPT_STATUS_1:
364	case WM831X_INTERRUPT_STATUS_2:
365	case WM831X_INTERRUPT_STATUS_3:
366	case WM831X_INTERRUPT_STATUS_4:
367	case WM831X_INTERRUPT_STATUS_5:
368	case WM831X_IRQ_CONFIG:
369	case WM831X_SYSTEM_INTERRUPTS_MASK:
370	case WM831X_INTERRUPT_STATUS_1_MASK:
371	case WM831X_INTERRUPT_STATUS_2_MASK:
372	case WM831X_INTERRUPT_STATUS_3_MASK:
373	case WM831X_INTERRUPT_STATUS_4_MASK:
374	case WM831X_INTERRUPT_STATUS_5_MASK:
375	case WM831X_RTC_TIME_1:
376	case WM831X_RTC_TIME_2:
377	case WM831X_RTC_ALARM_1:
378	case WM831X_RTC_ALARM_2:
379	case WM831X_RTC_CONTROL:
380	case WM831X_RTC_TRIM:
381	case WM831X_TOUCH_CONTROL_1:
382	case WM831X_TOUCH_CONTROL_2:
383	case WM831X_AUXADC_CONTROL:
384	case WM831X_AUXADC_SOURCE:
385	case WM831X_COMPARATOR_CONTROL:
386	case WM831X_COMPARATOR_1:
387	case WM831X_COMPARATOR_2:
388	case WM831X_COMPARATOR_3:
389	case WM831X_COMPARATOR_4:
390	case WM831X_GPIO1_CONTROL:
391	case WM831X_GPIO2_CONTROL:
392	case WM831X_GPIO3_CONTROL:
393	case WM831X_GPIO4_CONTROL:
394	case WM831X_GPIO5_CONTROL:
395	case WM831X_GPIO6_CONTROL:
396	case WM831X_GPIO7_CONTROL:
397	case WM831X_GPIO8_CONTROL:
398	case WM831X_GPIO9_CONTROL:
399	case WM831X_GPIO10_CONTROL:
400	case WM831X_GPIO11_CONTROL:
401	case WM831X_GPIO12_CONTROL:
402	case WM831X_GPIO13_CONTROL:
403	case WM831X_GPIO14_CONTROL:
404	case WM831X_GPIO15_CONTROL:
405	case WM831X_GPIO16_CONTROL:
406	case WM831X_CHARGER_CONTROL_1:
407	case WM831X_CHARGER_CONTROL_2:
408	case WM831X_CHARGER_STATUS:
409	case WM831X_BACKUP_CHARGER_CONTROL:
410	case WM831X_STATUS_LED_1:
411	case WM831X_STATUS_LED_2:
412	case WM831X_CURRENT_SINK_1:
413	case WM831X_CURRENT_SINK_2:
414	case WM831X_DCDC_ENABLE:
415	case WM831X_LDO_ENABLE:
416	case WM831X_DC1_CONTROL_1:
417	case WM831X_DC1_CONTROL_2:
418	case WM831X_DC1_ON_CONFIG:
419	case WM831X_DC1_SLEEP_CONTROL:
420	case WM831X_DC1_DVS_CONTROL:
421	case WM831X_DC2_CONTROL_1:
422	case WM831X_DC2_CONTROL_2:
423	case WM831X_DC2_ON_CONFIG:
424	case WM831X_DC2_SLEEP_CONTROL:
425	case WM831X_DC2_DVS_CONTROL:
426	case WM831X_DC3_CONTROL_1:
427	case WM831X_DC3_CONTROL_2:
428	case WM831X_DC3_ON_CONFIG:
429	case WM831X_DC3_SLEEP_CONTROL:
430	case WM831X_DC4_CONTROL:
431	case WM831X_DC4_SLEEP_CONTROL:
432	case WM831X_EPE1_CONTROL:
433	case WM831X_EPE2_CONTROL:
434	case WM831X_LDO1_CONTROL:
435	case WM831X_LDO1_ON_CONTROL:
436	case WM831X_LDO1_SLEEP_CONTROL:
437	case WM831X_LDO2_CONTROL:
438	case WM831X_LDO2_ON_CONTROL:
439	case WM831X_LDO2_SLEEP_CONTROL:
440	case WM831X_LDO3_CONTROL:
441	case WM831X_LDO3_ON_CONTROL:
442	case WM831X_LDO3_SLEEP_CONTROL:
443	case WM831X_LDO4_CONTROL:
444	case WM831X_LDO4_ON_CONTROL:
445	case WM831X_LDO4_SLEEP_CONTROL:
446	case WM831X_LDO5_CONTROL:
447	case WM831X_LDO5_ON_CONTROL:
448	case WM831X_LDO5_SLEEP_CONTROL:
449	case WM831X_LDO6_CONTROL:
450	case WM831X_LDO6_ON_CONTROL:
451	case WM831X_LDO6_SLEEP_CONTROL:
452	case WM831X_LDO7_CONTROL:
453	case WM831X_LDO7_ON_CONTROL:
454	case WM831X_LDO7_SLEEP_CONTROL:
455	case WM831X_LDO8_CONTROL:
456	case WM831X_LDO8_ON_CONTROL:
457	case WM831X_LDO8_SLEEP_CONTROL:
458	case WM831X_LDO9_CONTROL:
459	case WM831X_LDO9_ON_CONTROL:
460	case WM831X_LDO9_SLEEP_CONTROL:
461	case WM831X_LDO10_CONTROL:
462	case WM831X_LDO10_ON_CONTROL:
463	case WM831X_LDO10_SLEEP_CONTROL:
464	case WM831X_LDO11_ON_CONTROL:
465	case WM831X_LDO11_SLEEP_CONTROL:
466	case WM831X_POWER_GOOD_SOURCE_1:
467	case WM831X_POWER_GOOD_SOURCE_2:
468	case WM831X_CLOCK_CONTROL_1:
469	case WM831X_CLOCK_CONTROL_2:
470	case WM831X_FLL_CONTROL_1:
471	case WM831X_FLL_CONTROL_2:
472	case WM831X_FLL_CONTROL_3:
473	case WM831X_FLL_CONTROL_4:
474	case WM831X_FLL_CONTROL_5:
475		return true;
476	default:
477		return false;
478	}
479}
480
481static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
482{
483	switch (reg) {
484	case WM831X_SYSTEM_STATUS:
485	case WM831X_ON_SOURCE:
486	case WM831X_OFF_SOURCE:
487	case WM831X_GPIO_LEVEL:
488	case WM831X_SYSTEM_INTERRUPTS:
489	case WM831X_INTERRUPT_STATUS_1:
490	case WM831X_INTERRUPT_STATUS_2:
491	case WM831X_INTERRUPT_STATUS_3:
492	case WM831X_INTERRUPT_STATUS_4:
493	case WM831X_INTERRUPT_STATUS_5:
494	case WM831X_RTC_TIME_1:
495	case WM831X_RTC_TIME_2:
496	case WM831X_TOUCH_DATA_X:
497	case WM831X_TOUCH_DATA_Y:
498	case WM831X_TOUCH_DATA_Z:
499	case WM831X_AUXADC_DATA:
500	case WM831X_CHARGER_STATUS:
501	case WM831X_DCDC_STATUS:
502	case WM831X_LDO_STATUS:
503	case WM831X_DCDC_UV_STATUS:
504	case WM831X_LDO_UV_STATUS:
505		return true;
506	default:
507		return false;
508	}
509}
510
511/**
512 * wm831x_reg_read: Read a single WM831x register.
513 *
514 * @wm831x: Device to read from.
515 * @reg: Register to read.
516 */
517int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
518{
519	unsigned int val;
520	int ret;
521
522	ret = regmap_read(wm831x->regmap, reg, &val);
523
524	if (ret < 0)
525		return ret;
526	else
527		return val;
528}
529EXPORT_SYMBOL_GPL(wm831x_reg_read);
530
531/**
532 * wm831x_bulk_read: Read multiple WM831x registers
533 *
534 * @wm831x: Device to read from
535 * @reg: First register
536 * @count: Number of registers
537 * @buf: Buffer to fill.
538 */
539int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
540		     int count, u16 *buf)
541{
542	return regmap_bulk_read(wm831x->regmap, reg, buf, count);
543}
544EXPORT_SYMBOL_GPL(wm831x_bulk_read);
545
546static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
547			int bytes, void *src)
548{
549	u16 *buf = src;
550	int i, ret;
551
552	BUG_ON(bytes % 2);
553	BUG_ON(bytes <= 0);
554
555	for (i = 0; i < bytes / 2; i++) {
556		if (wm831x_reg_locked(wm831x, reg))
557			return -EPERM;
558
559		dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
560			 buf[i], reg + i, reg + i);
561		ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
562		if (ret != 0)
563			return ret;
564	}
565
566	return 0;
567}
568
569/**
570 * wm831x_reg_write: Write a single WM831x register.
571 *
572 * @wm831x: Device to write to.
573 * @reg: Register to write to.
574 * @val: Value to write.
575 */
576int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
577		     unsigned short val)
578{
579	int ret;
580
581	mutex_lock(&wm831x->io_lock);
582
583	ret = wm831x_write(wm831x, reg, 2, &val);
584
585	mutex_unlock(&wm831x->io_lock);
586
587	return ret;
588}
589EXPORT_SYMBOL_GPL(wm831x_reg_write);
590
591/**
592 * wm831x_set_bits: Set the value of a bitfield in a WM831x register
593 *
594 * @wm831x: Device to write to.
595 * @reg: Register to write to.
596 * @mask: Mask of bits to set.
597 * @val: Value to set (unshifted)
598 */
599int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
600		    unsigned short mask, unsigned short val)
601{
602	int ret;
603
604	mutex_lock(&wm831x->io_lock);
605
606	if (!wm831x_reg_locked(wm831x, reg))
607		ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
608	else
609		ret = -EPERM;
610
611	mutex_unlock(&wm831x->io_lock);
612
613	return ret;
614}
615EXPORT_SYMBOL_GPL(wm831x_set_bits);
616
617static struct resource wm831x_dcdc1_resources[] = {
618	{
619		.start = WM831X_DC1_CONTROL_1,
620		.end   = WM831X_DC1_DVS_CONTROL,
621		.flags = IORESOURCE_REG,
622	},
623	{
624		.name  = "UV",
625		.start = WM831X_IRQ_UV_DC1,
626		.end   = WM831X_IRQ_UV_DC1,
627		.flags = IORESOURCE_IRQ,
628	},
629	{
630		.name  = "HC",
631		.start = WM831X_IRQ_HC_DC1,
632		.end   = WM831X_IRQ_HC_DC1,
633		.flags = IORESOURCE_IRQ,
634	},
635};
636
637
638static struct resource wm831x_dcdc2_resources[] = {
639	{
640		.start = WM831X_DC2_CONTROL_1,
641		.end   = WM831X_DC2_DVS_CONTROL,
642		.flags = IORESOURCE_REG,
643	},
644	{
645		.name  = "UV",
646		.start = WM831X_IRQ_UV_DC2,
647		.end   = WM831X_IRQ_UV_DC2,
648		.flags = IORESOURCE_IRQ,
649	},
650	{
651		.name  = "HC",
652		.start = WM831X_IRQ_HC_DC2,
653		.end   = WM831X_IRQ_HC_DC2,
654		.flags = IORESOURCE_IRQ,
655	},
656};
657
658static struct resource wm831x_dcdc3_resources[] = {
659	{
660		.start = WM831X_DC3_CONTROL_1,
661		.end   = WM831X_DC3_SLEEP_CONTROL,
662		.flags = IORESOURCE_REG,
663	},
664	{
665		.name  = "UV",
666		.start = WM831X_IRQ_UV_DC3,
667		.end   = WM831X_IRQ_UV_DC3,
668		.flags = IORESOURCE_IRQ,
669	},
670};
671
672static struct resource wm831x_dcdc4_resources[] = {
673	{
674		.start = WM831X_DC4_CONTROL,
675		.end   = WM831X_DC4_SLEEP_CONTROL,
676		.flags = IORESOURCE_REG,
677	},
678	{
679		.name  = "UV",
680		.start = WM831X_IRQ_UV_DC4,
681		.end   = WM831X_IRQ_UV_DC4,
682		.flags = IORESOURCE_IRQ,
683	},
684};
685
686static struct resource wm8320_dcdc4_buck_resources[] = {
687	{
688		.start = WM831X_DC4_CONTROL,
689		.end   = WM832X_DC4_SLEEP_CONTROL,
690		.flags = IORESOURCE_REG,
691	},
692	{
693		.name  = "UV",
694		.start = WM831X_IRQ_UV_DC4,
695		.end   = WM831X_IRQ_UV_DC4,
696		.flags = IORESOURCE_IRQ,
697	},
698};
699
700static struct resource wm831x_gpio_resources[] = {
701	{
702		.start = WM831X_IRQ_GPIO_1,
703		.end   = WM831X_IRQ_GPIO_16,
704		.flags = IORESOURCE_IRQ,
705	},
706};
707
708static struct resource wm831x_isink1_resources[] = {
709	{
710		.start = WM831X_CURRENT_SINK_1,
711		.end   = WM831X_CURRENT_SINK_1,
712		.flags = IORESOURCE_REG,
713	},
714	{
715		.start = WM831X_IRQ_CS1,
716		.end   = WM831X_IRQ_CS1,
717		.flags = IORESOURCE_IRQ,
718	},
719};
720
721static struct resource wm831x_isink2_resources[] = {
722	{
723		.start = WM831X_CURRENT_SINK_2,
724		.end   = WM831X_CURRENT_SINK_2,
725		.flags = IORESOURCE_REG,
726	},
727	{
728		.start = WM831X_IRQ_CS2,
729		.end   = WM831X_IRQ_CS2,
730		.flags = IORESOURCE_IRQ,
731	},
732};
733
734static struct resource wm831x_ldo1_resources[] = {
735	{
736		.start = WM831X_LDO1_CONTROL,
737		.end   = WM831X_LDO1_SLEEP_CONTROL,
738		.flags = IORESOURCE_REG,
739	},
740	{
741		.name  = "UV",
742		.start = WM831X_IRQ_UV_LDO1,
743		.end   = WM831X_IRQ_UV_LDO1,
744		.flags = IORESOURCE_IRQ,
745	},
746};
747
748static struct resource wm831x_ldo2_resources[] = {
749	{
750		.start = WM831X_LDO2_CONTROL,
751		.end   = WM831X_LDO2_SLEEP_CONTROL,
752		.flags = IORESOURCE_REG,
753	},
754	{
755		.name  = "UV",
756		.start = WM831X_IRQ_UV_LDO2,
757		.end   = WM831X_IRQ_UV_LDO2,
758		.flags = IORESOURCE_IRQ,
759	},
760};
761
762static struct resource wm831x_ldo3_resources[] = {
763	{
764		.start = WM831X_LDO3_CONTROL,
765		.end   = WM831X_LDO3_SLEEP_CONTROL,
766		.flags = IORESOURCE_REG,
767	},
768	{
769		.name  = "UV",
770		.start = WM831X_IRQ_UV_LDO3,
771		.end   = WM831X_IRQ_UV_LDO3,
772		.flags = IORESOURCE_IRQ,
773	},
774};
775
776static struct resource wm831x_ldo4_resources[] = {
777	{
778		.start = WM831X_LDO4_CONTROL,
779		.end   = WM831X_LDO4_SLEEP_CONTROL,
780		.flags = IORESOURCE_REG,
781	},
782	{
783		.name  = "UV",
784		.start = WM831X_IRQ_UV_LDO4,
785		.end   = WM831X_IRQ_UV_LDO4,
786		.flags = IORESOURCE_IRQ,
787	},
788};
789
790static struct resource wm831x_ldo5_resources[] = {
791	{
792		.start = WM831X_LDO5_CONTROL,
793		.end   = WM831X_LDO5_SLEEP_CONTROL,
794		.flags = IORESOURCE_REG,
795	},
796	{
797		.name  = "UV",
798		.start = WM831X_IRQ_UV_LDO5,
799		.end   = WM831X_IRQ_UV_LDO5,
800		.flags = IORESOURCE_IRQ,
801	},
802};
803
804static struct resource wm831x_ldo6_resources[] = {
805	{
806		.start = WM831X_LDO6_CONTROL,
807		.end   = WM831X_LDO6_SLEEP_CONTROL,
808		.flags = IORESOURCE_REG,
809	},
810	{
811		.name  = "UV",
812		.start = WM831X_IRQ_UV_LDO6,
813		.end   = WM831X_IRQ_UV_LDO6,
814		.flags = IORESOURCE_IRQ,
815	},
816};
817
818static struct resource wm831x_ldo7_resources[] = {
819	{
820		.start = WM831X_LDO7_CONTROL,
821		.end   = WM831X_LDO7_SLEEP_CONTROL,
822		.flags = IORESOURCE_REG,
823	},
824	{
825		.name  = "UV",
826		.start = WM831X_IRQ_UV_LDO7,
827		.end   = WM831X_IRQ_UV_LDO7,
828		.flags = IORESOURCE_IRQ,
829	},
830};
831
832static struct resource wm831x_ldo8_resources[] = {
833	{
834		.start = WM831X_LDO8_CONTROL,
835		.end   = WM831X_LDO8_SLEEP_CONTROL,
836		.flags = IORESOURCE_REG,
837	},
838	{
839		.name  = "UV",
840		.start = WM831X_IRQ_UV_LDO8,
841		.end   = WM831X_IRQ_UV_LDO8,
842		.flags = IORESOURCE_IRQ,
843	},
844};
845
846static struct resource wm831x_ldo9_resources[] = {
847	{
848		.start = WM831X_LDO9_CONTROL,
849		.end   = WM831X_LDO9_SLEEP_CONTROL,
850		.flags = IORESOURCE_REG,
851	},
852	{
853		.name  = "UV",
854		.start = WM831X_IRQ_UV_LDO9,
855		.end   = WM831X_IRQ_UV_LDO9,
856		.flags = IORESOURCE_IRQ,
857	},
858};
859
860static struct resource wm831x_ldo10_resources[] = {
861	{
862		.start = WM831X_LDO10_CONTROL,
863		.end   = WM831X_LDO10_SLEEP_CONTROL,
864		.flags = IORESOURCE_REG,
865	},
866	{
867		.name  = "UV",
868		.start = WM831X_IRQ_UV_LDO10,
869		.end   = WM831X_IRQ_UV_LDO10,
870		.flags = IORESOURCE_IRQ,
871	},
872};
873
874static struct resource wm831x_ldo11_resources[] = {
875	{
876		.start = WM831X_LDO11_ON_CONTROL,
877		.end   = WM831X_LDO11_SLEEP_CONTROL,
878		.flags = IORESOURCE_REG,
879	},
880};
881
882static struct resource wm831x_on_resources[] = {
883	{
884		.start = WM831X_IRQ_ON,
885		.end   = WM831X_IRQ_ON,
886		.flags = IORESOURCE_IRQ,
887	},
888};
889
890
891static struct resource wm831x_power_resources[] = {
892	{
893		.name = "SYSLO",
894		.start = WM831X_IRQ_PPM_SYSLO,
895		.end   = WM831X_IRQ_PPM_SYSLO,
896		.flags = IORESOURCE_IRQ,
897	},
898	{
899		.name = "PWR SRC",
900		.start = WM831X_IRQ_PPM_PWR_SRC,
901		.end   = WM831X_IRQ_PPM_PWR_SRC,
902		.flags = IORESOURCE_IRQ,
903	},
904	{
905		.name = "USB CURR",
906		.start = WM831X_IRQ_PPM_USB_CURR,
907		.end   = WM831X_IRQ_PPM_USB_CURR,
908		.flags = IORESOURCE_IRQ,
909	},
910	{
911		.name = "BATT HOT",
912		.start = WM831X_IRQ_CHG_BATT_HOT,
913		.end   = WM831X_IRQ_CHG_BATT_HOT,
914		.flags = IORESOURCE_IRQ,
915	},
916	{
917		.name = "BATT COLD",
918		.start = WM831X_IRQ_CHG_BATT_COLD,
919		.end   = WM831X_IRQ_CHG_BATT_COLD,
920		.flags = IORESOURCE_IRQ,
921	},
922	{
923		.name = "BATT FAIL",
924		.start = WM831X_IRQ_CHG_BATT_FAIL,
925		.end   = WM831X_IRQ_CHG_BATT_FAIL,
926		.flags = IORESOURCE_IRQ,
927	},
928	{
929		.name = "OV",
930		.start = WM831X_IRQ_CHG_OV,
931		.end   = WM831X_IRQ_CHG_OV,
932		.flags = IORESOURCE_IRQ,
933	},
934	{
935		.name = "END",
936		.start = WM831X_IRQ_CHG_END,
937		.end   = WM831X_IRQ_CHG_END,
938		.flags = IORESOURCE_IRQ,
939	},
940	{
941		.name = "TO",
942		.start = WM831X_IRQ_CHG_TO,
943		.end   = WM831X_IRQ_CHG_TO,
944		.flags = IORESOURCE_IRQ,
945	},
946	{
947		.name = "MODE",
948		.start = WM831X_IRQ_CHG_MODE,
949		.end   = WM831X_IRQ_CHG_MODE,
950		.flags = IORESOURCE_IRQ,
951	},
952	{
953		.name = "START",
954		.start = WM831X_IRQ_CHG_START,
955		.end   = WM831X_IRQ_CHG_START,
956		.flags = IORESOURCE_IRQ,
957	},
958};
959
960static struct resource wm831x_rtc_resources[] = {
961	{
962		.name = "PER",
963		.start = WM831X_IRQ_RTC_PER,
964		.end   = WM831X_IRQ_RTC_PER,
965		.flags = IORESOURCE_IRQ,
966	},
967	{
968		.name = "ALM",
969		.start = WM831X_IRQ_RTC_ALM,
970		.end   = WM831X_IRQ_RTC_ALM,
971		.flags = IORESOURCE_IRQ,
972	},
973};
974
975static struct resource wm831x_status1_resources[] = {
976	{
977		.start = WM831X_STATUS_LED_1,
978		.end   = WM831X_STATUS_LED_1,
979		.flags = IORESOURCE_REG,
980	},
981};
982
983static struct resource wm831x_status2_resources[] = {
984	{
985		.start = WM831X_STATUS_LED_2,
986		.end   = WM831X_STATUS_LED_2,
987		.flags = IORESOURCE_REG,
988	},
989};
990
991static struct resource wm831x_touch_resources[] = {
992	{
993		.name = "TCHPD",
994		.start = WM831X_IRQ_TCHPD,
995		.end   = WM831X_IRQ_TCHPD,
996		.flags = IORESOURCE_IRQ,
997	},
998	{
999		.name = "TCHDATA",
1000		.start = WM831X_IRQ_TCHDATA,
1001		.end   = WM831X_IRQ_TCHDATA,
1002		.flags = IORESOURCE_IRQ,
1003	},
1004};
1005
1006static struct resource wm831x_wdt_resources[] = {
1007	{
1008		.start = WM831X_IRQ_WDOG_TO,
1009		.end   = WM831X_IRQ_WDOG_TO,
1010		.flags = IORESOURCE_IRQ,
1011	},
1012};
1013
1014static const struct mfd_cell wm8310_devs[] = {
1015	{
1016		.name = "wm831x-backup",
1017	},
1018	{
1019		.name = "wm831x-buckv",
1020		.id = 1,
1021		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1022		.resources = wm831x_dcdc1_resources,
1023	},
1024	{
1025		.name = "wm831x-buckv",
1026		.id = 2,
1027		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1028		.resources = wm831x_dcdc2_resources,
1029	},
1030	{
1031		.name = "wm831x-buckp",
1032		.id = 3,
1033		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1034		.resources = wm831x_dcdc3_resources,
1035	},
1036	{
1037		.name = "wm831x-boostp",
1038		.id = 4,
1039		.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1040		.resources = wm831x_dcdc4_resources,
1041	},
1042	{
1043		.name = "wm831x-clk",
1044	},
1045	{
1046		.name = "wm831x-epe",
1047		.id = 1,
1048	},
1049	{
1050		.name = "wm831x-epe",
1051		.id = 2,
1052	},
1053	{
1054		.name = "wm831x-gpio",
1055		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1056		.resources = wm831x_gpio_resources,
1057	},
1058	{
1059		.name = "wm831x-hwmon",
1060	},
1061	{
1062		.name = "wm831x-isink",
1063		.id = 1,
1064		.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1065		.resources = wm831x_isink1_resources,
1066	},
1067	{
1068		.name = "wm831x-isink",
1069		.id = 2,
1070		.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1071		.resources = wm831x_isink2_resources,
1072	},
1073	{
1074		.name = "wm831x-ldo",
1075		.id = 1,
1076		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1077		.resources = wm831x_ldo1_resources,
1078	},
1079	{
1080		.name = "wm831x-ldo",
1081		.id = 2,
1082		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1083		.resources = wm831x_ldo2_resources,
1084	},
1085	{
1086		.name = "wm831x-ldo",
1087		.id = 3,
1088		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1089		.resources = wm831x_ldo3_resources,
1090	},
1091	{
1092		.name = "wm831x-ldo",
1093		.id = 4,
1094		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1095		.resources = wm831x_ldo4_resources,
1096	},
1097	{
1098		.name = "wm831x-ldo",
1099		.id = 5,
1100		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1101		.resources = wm831x_ldo5_resources,
1102	},
1103	{
1104		.name = "wm831x-ldo",
1105		.id = 6,
1106		.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1107		.resources = wm831x_ldo6_resources,
1108	},
1109	{
1110		.name = "wm831x-aldo",
1111		.id = 7,
1112		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1113		.resources = wm831x_ldo7_resources,
1114	},
1115	{
1116		.name = "wm831x-aldo",
1117		.id = 8,
1118		.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1119		.resources = wm831x_ldo8_resources,
1120	},
1121	{
1122		.name = "wm831x-aldo",
1123		.id = 9,
1124		.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1125		.resources = wm831x_ldo9_resources,
1126	},
1127	{
1128		.name = "wm831x-aldo",
1129		.id = 10,
1130		.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1131		.resources = wm831x_ldo10_resources,
1132	},
1133	{
1134		.name = "wm831x-alive-ldo",
1135		.id = 11,
1136		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1137		.resources = wm831x_ldo11_resources,
1138	},
1139	{
1140		.name = "wm831x-on",
1141		.num_resources = ARRAY_SIZE(wm831x_on_resources),
1142		.resources = wm831x_on_resources,
1143	},
1144	{
1145		.name = "wm831x-power",
1146		.num_resources = ARRAY_SIZE(wm831x_power_resources),
1147		.resources = wm831x_power_resources,
1148	},
1149	{
1150		.name = "wm831x-status",
1151		.id = 1,
1152		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
1153		.resources = wm831x_status1_resources,
1154	},
1155	{
1156		.name = "wm831x-status",
1157		.id = 2,
1158		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
1159		.resources = wm831x_status2_resources,
1160	},
1161	{
1162		.name = "wm831x-watchdog",
1163		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1164		.resources = wm831x_wdt_resources,
1165	},
1166};
1167
1168static const struct mfd_cell wm8311_devs[] = {
1169	{
1170		.name = "wm831x-backup",
1171	},
1172	{
1173		.name = "wm831x-buckv",
1174		.id = 1,
1175		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1176		.resources = wm831x_dcdc1_resources,
1177	},
1178	{
1179		.name = "wm831x-buckv",
1180		.id = 2,
1181		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1182		.resources = wm831x_dcdc2_resources,
1183	},
1184	{
1185		.name = "wm831x-buckp",
1186		.id = 3,
1187		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1188		.resources = wm831x_dcdc3_resources,
1189	},
1190	{
1191		.name = "wm831x-boostp",
1192		.id = 4,
1193		.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1194		.resources = wm831x_dcdc4_resources,
1195	},
1196	{
1197		.name = "wm831x-clk",
1198	},
1199	{
1200		.name = "wm831x-epe",
1201		.id = 1,
1202	},
1203	{
1204		.name = "wm831x-epe",
1205		.id = 2,
1206	},
1207	{
1208		.name = "wm831x-gpio",
1209		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1210		.resources = wm831x_gpio_resources,
1211	},
1212	{
1213		.name = "wm831x-hwmon",
1214	},
1215	{
1216		.name = "wm831x-isink",
1217		.id = 1,
1218		.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1219		.resources = wm831x_isink1_resources,
1220	},
1221	{
1222		.name = "wm831x-isink",
1223		.id = 2,
1224		.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1225		.resources = wm831x_isink2_resources,
1226	},
1227	{
1228		.name = "wm831x-ldo",
1229		.id = 1,
1230		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1231		.resources = wm831x_ldo1_resources,
1232	},
1233	{
1234		.name = "wm831x-ldo",
1235		.id = 2,
1236		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1237		.resources = wm831x_ldo2_resources,
1238	},
1239	{
1240		.name = "wm831x-ldo",
1241		.id = 3,
1242		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1243		.resources = wm831x_ldo3_resources,
1244	},
1245	{
1246		.name = "wm831x-ldo",
1247		.id = 4,
1248		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1249		.resources = wm831x_ldo4_resources,
1250	},
1251	{
1252		.name = "wm831x-ldo",
1253		.id = 5,
1254		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1255		.resources = wm831x_ldo5_resources,
1256	},
1257	{
1258		.name = "wm831x-aldo",
1259		.id = 7,
1260		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1261		.resources = wm831x_ldo7_resources,
1262	},
1263	{
1264		.name = "wm831x-alive-ldo",
1265		.id = 11,
1266		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1267		.resources = wm831x_ldo11_resources,
1268	},
1269	{
1270		.name = "wm831x-on",
1271		.num_resources = ARRAY_SIZE(wm831x_on_resources),
1272		.resources = wm831x_on_resources,
1273	},
1274	{
1275		.name = "wm831x-power",
1276		.num_resources = ARRAY_SIZE(wm831x_power_resources),
1277		.resources = wm831x_power_resources,
1278	},
1279	{
1280		.name = "wm831x-status",
1281		.id = 1,
1282		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
1283		.resources = wm831x_status1_resources,
1284	},
1285	{
1286		.name = "wm831x-status",
1287		.id = 2,
1288		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
1289		.resources = wm831x_status2_resources,
1290	},
1291	{
1292		.name = "wm831x-watchdog",
1293		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1294		.resources = wm831x_wdt_resources,
1295	},
1296};
1297
1298static const struct mfd_cell wm8312_devs[] = {
1299	{
1300		.name = "wm831x-backup",
1301	},
1302	{
1303		.name = "wm831x-buckv",
1304		.id = 1,
1305		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1306		.resources = wm831x_dcdc1_resources,
1307	},
1308	{
1309		.name = "wm831x-buckv",
1310		.id = 2,
1311		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1312		.resources = wm831x_dcdc2_resources,
1313	},
1314	{
1315		.name = "wm831x-buckp",
1316		.id = 3,
1317		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1318		.resources = wm831x_dcdc3_resources,
1319	},
1320	{
1321		.name = "wm831x-boostp",
1322		.id = 4,
1323		.num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1324		.resources = wm831x_dcdc4_resources,
1325	},
1326	{
1327		.name = "wm831x-clk",
1328	},
1329	{
1330		.name = "wm831x-epe",
1331		.id = 1,
1332	},
1333	{
1334		.name = "wm831x-epe",
1335		.id = 2,
1336	},
1337	{
1338		.name = "wm831x-gpio",
1339		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1340		.resources = wm831x_gpio_resources,
1341	},
1342	{
1343		.name = "wm831x-hwmon",
1344	},
1345	{
1346		.name = "wm831x-isink",
1347		.id = 1,
1348		.num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1349		.resources = wm831x_isink1_resources,
1350	},
1351	{
1352		.name = "wm831x-isink",
1353		.id = 2,
1354		.num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1355		.resources = wm831x_isink2_resources,
1356	},
1357	{
1358		.name = "wm831x-ldo",
1359		.id = 1,
1360		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1361		.resources = wm831x_ldo1_resources,
1362	},
1363	{
1364		.name = "wm831x-ldo",
1365		.id = 2,
1366		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1367		.resources = wm831x_ldo2_resources,
1368	},
1369	{
1370		.name = "wm831x-ldo",
1371		.id = 3,
1372		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1373		.resources = wm831x_ldo3_resources,
1374	},
1375	{
1376		.name = "wm831x-ldo",
1377		.id = 4,
1378		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1379		.resources = wm831x_ldo4_resources,
1380	},
1381	{
1382		.name = "wm831x-ldo",
1383		.id = 5,
1384		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1385		.resources = wm831x_ldo5_resources,
1386	},
1387	{
1388		.name = "wm831x-ldo",
1389		.id = 6,
1390		.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1391		.resources = wm831x_ldo6_resources,
1392	},
1393	{
1394		.name = "wm831x-aldo",
1395		.id = 7,
1396		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1397		.resources = wm831x_ldo7_resources,
1398	},
1399	{
1400		.name = "wm831x-aldo",
1401		.id = 8,
1402		.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1403		.resources = wm831x_ldo8_resources,
1404	},
1405	{
1406		.name = "wm831x-aldo",
1407		.id = 9,
1408		.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1409		.resources = wm831x_ldo9_resources,
1410	},
1411	{
1412		.name = "wm831x-aldo",
1413		.id = 10,
1414		.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1415		.resources = wm831x_ldo10_resources,
1416	},
1417	{
1418		.name = "wm831x-alive-ldo",
1419		.id = 11,
1420		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1421		.resources = wm831x_ldo11_resources,
1422	},
1423	{
1424		.name = "wm831x-on",
1425		.num_resources = ARRAY_SIZE(wm831x_on_resources),
1426		.resources = wm831x_on_resources,
1427	},
1428	{
1429		.name = "wm831x-power",
1430		.num_resources = ARRAY_SIZE(wm831x_power_resources),
1431		.resources = wm831x_power_resources,
1432	},
1433	{
1434		.name = "wm831x-status",
1435		.id = 1,
1436		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
1437		.resources = wm831x_status1_resources,
1438	},
1439	{
1440		.name = "wm831x-status",
1441		.id = 2,
1442		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
1443		.resources = wm831x_status2_resources,
1444	},
1445	{
1446		.name = "wm831x-watchdog",
1447		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1448		.resources = wm831x_wdt_resources,
1449	},
1450};
1451
1452static const struct mfd_cell wm8320_devs[] = {
1453	{
1454		.name = "wm831x-backup",
1455	},
1456	{
1457		.name = "wm831x-buckv",
1458		.id = 1,
1459		.num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1460		.resources = wm831x_dcdc1_resources,
1461	},
1462	{
1463		.name = "wm831x-buckv",
1464		.id = 2,
1465		.num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1466		.resources = wm831x_dcdc2_resources,
1467	},
1468	{
1469		.name = "wm831x-buckp",
1470		.id = 3,
1471		.num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1472		.resources = wm831x_dcdc3_resources,
1473	},
1474	{
1475		.name = "wm831x-buckp",
1476		.id = 4,
1477		.num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
1478		.resources = wm8320_dcdc4_buck_resources,
1479	},
1480	{
1481		.name = "wm831x-clk",
1482	},
1483	{
1484		.name = "wm831x-gpio",
1485		.num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1486		.resources = wm831x_gpio_resources,
1487	},
1488	{
1489		.name = "wm831x-hwmon",
1490	},
1491	{
1492		.name = "wm831x-ldo",
1493		.id = 1,
1494		.num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1495		.resources = wm831x_ldo1_resources,
1496	},
1497	{
1498		.name = "wm831x-ldo",
1499		.id = 2,
1500		.num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1501		.resources = wm831x_ldo2_resources,
1502	},
1503	{
1504		.name = "wm831x-ldo",
1505		.id = 3,
1506		.num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1507		.resources = wm831x_ldo3_resources,
1508	},
1509	{
1510		.name = "wm831x-ldo",
1511		.id = 4,
1512		.num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1513		.resources = wm831x_ldo4_resources,
1514	},
1515	{
1516		.name = "wm831x-ldo",
1517		.id = 5,
1518		.num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1519		.resources = wm831x_ldo5_resources,
1520	},
1521	{
1522		.name = "wm831x-ldo",
1523		.id = 6,
1524		.num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1525		.resources = wm831x_ldo6_resources,
1526	},
1527	{
1528		.name = "wm831x-aldo",
1529		.id = 7,
1530		.num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1531		.resources = wm831x_ldo7_resources,
1532	},
1533	{
1534		.name = "wm831x-aldo",
1535		.id = 8,
1536		.num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1537		.resources = wm831x_ldo8_resources,
1538	},
1539	{
1540		.name = "wm831x-aldo",
1541		.id = 9,
1542		.num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1543		.resources = wm831x_ldo9_resources,
1544	},
1545	{
1546		.name = "wm831x-aldo",
1547		.id = 10,
1548		.num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1549		.resources = wm831x_ldo10_resources,
1550	},
1551	{
1552		.name = "wm831x-alive-ldo",
1553		.id = 11,
1554		.num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1555		.resources = wm831x_ldo11_resources,
1556	},
1557	{
1558		.name = "wm831x-on",
1559		.num_resources = ARRAY_SIZE(wm831x_on_resources),
1560		.resources = wm831x_on_resources,
1561	},
1562	{
1563		.name = "wm831x-status",
1564		.id = 1,
1565		.num_resources = ARRAY_SIZE(wm831x_status1_resources),
1566		.resources = wm831x_status1_resources,
1567	},
1568	{
1569		.name = "wm831x-status",
1570		.id = 2,
1571		.num_resources = ARRAY_SIZE(wm831x_status2_resources),
1572		.resources = wm831x_status2_resources,
1573	},
1574	{
1575		.name = "wm831x-watchdog",
1576		.num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1577		.resources = wm831x_wdt_resources,
1578	},
1579};
1580
1581static const struct mfd_cell touch_devs[] = {
1582	{
1583		.name = "wm831x-touch",
1584		.num_resources = ARRAY_SIZE(wm831x_touch_resources),
1585		.resources = wm831x_touch_resources,
1586	},
1587};
1588
1589static const struct mfd_cell rtc_devs[] = {
1590	{
1591		.name = "wm831x-rtc",
1592		.num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1593		.resources = wm831x_rtc_resources,
1594	},
1595};
1596
1597static const struct mfd_cell backlight_devs[] = {
1598	{
1599		.name = "wm831x-backlight",
1600	},
1601};
1602
1603struct regmap_config wm831x_regmap_config = {
1604	.reg_bits = 16,
1605	.val_bits = 16,
1606
1607	.cache_type = REGCACHE_RBTREE,
1608
1609	.max_register = WM831X_DBE_CHECK_DATA,
1610	.readable_reg = wm831x_reg_readable,
1611	.writeable_reg = wm831x_reg_writeable,
1612	.volatile_reg = wm831x_reg_volatile,
1613};
1614EXPORT_SYMBOL_GPL(wm831x_regmap_config);
1615
1616/*
1617 * Instantiate the generic non-control parts of the device.
1618 */
1619int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
1620{
1621	struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
1622	int rev, wm831x_num;
1623	enum wm831x_parent parent;
1624	int ret, i;
1625
1626	mutex_init(&wm831x->io_lock);
1627	mutex_init(&wm831x->key_lock);
1628	dev_set_drvdata(wm831x->dev, wm831x);
1629
1630	if (pdata)
1631		wm831x->soft_shutdown = pdata->soft_shutdown;
1632
1633	ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
1634	if (ret < 0) {
1635		dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
1636		goto err;
1637	}
1638	switch (ret) {
1639	case 0x6204:
1640	case 0x6246:
1641		break;
1642	default:
1643		dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
1644		ret = -EINVAL;
1645		goto err;
1646	}
1647
1648	ret = wm831x_reg_read(wm831x, WM831X_REVISION);
1649	if (ret < 0) {
1650		dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
1651		goto err;
1652	}
1653	rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
1654
1655	ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
1656	if (ret < 0) {
1657		dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
1658		goto err;
1659	}
1660
1661	/* Some engineering samples do not have the ID set, rely on
1662	 * the device being registered correctly.
1663	 */
1664	if (ret == 0) {
1665		dev_info(wm831x->dev, "Device is an engineering sample\n");
1666		ret = id;
1667	}
1668
1669	switch (ret) {
1670	case WM8310:
1671		parent = WM8310;
1672		wm831x->num_gpio = 16;
1673		wm831x->charger_irq_wake = 1;
1674		if (rev > 0) {
1675			wm831x->has_gpio_ena = 1;
1676			wm831x->has_cs_sts = 1;
1677		}
1678
1679		dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
1680		break;
1681
1682	case WM8311:
1683		parent = WM8311;
1684		wm831x->num_gpio = 16;
1685		wm831x->charger_irq_wake = 1;
1686		if (rev > 0) {
1687			wm831x->has_gpio_ena = 1;
1688			wm831x->has_cs_sts = 1;
1689		}
1690
1691		dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
1692		break;
1693
1694	case WM8312:
1695		parent = WM8312;
1696		wm831x->num_gpio = 16;
1697		wm831x->charger_irq_wake = 1;
1698		if (rev > 0) {
1699			wm831x->has_gpio_ena = 1;
1700			wm831x->has_cs_sts = 1;
1701		}
1702
1703		dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
1704		break;
1705
1706	case WM8320:
1707		parent = WM8320;
1708		wm831x->num_gpio = 12;
1709		dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
1710		break;
1711
1712	case WM8321:
1713		parent = WM8321;
1714		wm831x->num_gpio = 12;
1715		dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
1716		break;
1717
1718	case WM8325:
1719		parent = WM8325;
1720		wm831x->num_gpio = 12;
1721		dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
1722		break;
1723
1724	case WM8326:
1725		parent = WM8326;
1726		wm831x->num_gpio = 12;
1727		dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
1728		break;
1729
1730	default:
1731		dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
1732		ret = -EINVAL;
1733		goto err;
1734	}
1735
1736	/* This will need revisiting in future but is OK for all
1737	 * current parts.
1738	 */
1739	if (parent != id)
1740		dev_warn(wm831x->dev, "Device was registered as a WM%lx\n",
1741			 id);
1742
1743	/* Bootstrap the user key */
1744	ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
1745	if (ret < 0) {
1746		dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
1747		goto err;
1748	}
1749	if (ret != 0) {
1750		dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
1751			 ret);
1752		wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
1753	}
1754	wm831x->locked = 1;
1755
1756	if (pdata && pdata->pre_init) {
1757		ret = pdata->pre_init(wm831x);
1758		if (ret != 0) {
1759			dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
1760			goto err;
1761		}
1762	}
1763
1764	if (pdata) {
1765		for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
1766			if (!pdata->gpio_defaults[i])
1767				continue;
1768
1769			wm831x_reg_write(wm831x,
1770					 WM831X_GPIO1_CONTROL + i,
1771					 pdata->gpio_defaults[i] & 0xffff);
1772		}
1773	}
1774
1775	/* Multiply by 10 as we have many subdevices of the same type */
1776	if (pdata && pdata->wm831x_num)
1777		wm831x_num = pdata->wm831x_num * 10;
1778	else
1779		wm831x_num = -1;
1780
1781	ret = wm831x_irq_init(wm831x, irq);
1782	if (ret != 0)
1783		goto err;
1784
1785	wm831x_auxadc_init(wm831x);
1786
1787	/* The core device is up, instantiate the subdevices. */
1788	switch (parent) {
1789	case WM8310:
1790		ret = mfd_add_devices(wm831x->dev, wm831x_num,
1791				      wm8310_devs, ARRAY_SIZE(wm8310_devs),
1792				      NULL, 0, NULL);
1793		break;
1794
1795	case WM8311:
1796		ret = mfd_add_devices(wm831x->dev, wm831x_num,
1797				      wm8311_devs, ARRAY_SIZE(wm8311_devs),
1798				      NULL, 0, NULL);
1799		if (!pdata || !pdata->disable_touch)
1800			mfd_add_devices(wm831x->dev, wm831x_num,
1801					touch_devs, ARRAY_SIZE(touch_devs),
1802					NULL, 0, NULL);
1803		break;
1804
1805	case WM8312:
1806		ret = mfd_add_devices(wm831x->dev, wm831x_num,
1807				      wm8312_devs, ARRAY_SIZE(wm8312_devs),
1808				      NULL, 0, NULL);
1809		if (!pdata || !pdata->disable_touch)
1810			mfd_add_devices(wm831x->dev, wm831x_num,
1811					touch_devs, ARRAY_SIZE(touch_devs),
1812					NULL, 0, NULL);
1813		break;
1814
1815	case WM8320:
1816	case WM8321:
1817	case WM8325:
1818	case WM8326:
1819		ret = mfd_add_devices(wm831x->dev, wm831x_num,
1820				      wm8320_devs, ARRAY_SIZE(wm8320_devs),
1821				      NULL, 0, NULL);
1822		break;
1823
1824	default:
1825		/* If this happens the bus probe function is buggy */
1826		BUG();
1827	}
1828
1829	if (ret != 0) {
1830		dev_err(wm831x->dev, "Failed to add children\n");
1831		goto err_irq;
1832	}
1833
1834	/* The RTC can only be used if the 32.768kHz crystal is
1835	 * enabled; this can't be controlled by software at runtime.
1836	 */
1837	ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
1838	if (ret < 0) {
1839		dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
1840		goto err_irq;
1841	}
1842
1843	if (ret & WM831X_XTAL_ENA) {
1844		ret = mfd_add_devices(wm831x->dev, wm831x_num,
1845				      rtc_devs, ARRAY_SIZE(rtc_devs),
1846				      NULL, 0, NULL);
1847		if (ret != 0) {
1848			dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
1849			goto err_irq;
1850		}
1851	} else {
1852		dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
1853	}
1854
1855	if (pdata && pdata->backlight) {
1856		/* Treat errors as non-critical */
1857		ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
1858				      ARRAY_SIZE(backlight_devs), NULL,
1859				      0, NULL);
1860		if (ret < 0)
1861			dev_err(wm831x->dev, "Failed to add backlight: %d\n",
1862				ret);
1863	}
1864
1865	wm831x_otp_init(wm831x);
1866
1867	if (pdata && pdata->post_init) {
1868		ret = pdata->post_init(wm831x);
1869		if (ret != 0) {
1870			dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
1871			goto err_irq;
1872		}
1873	}
1874
1875	return 0;
1876
1877err_irq:
1878	wm831x_irq_exit(wm831x);
1879err:
1880	mfd_remove_devices(wm831x->dev);
1881	return ret;
1882}
1883
1884void wm831x_device_exit(struct wm831x *wm831x)
1885{
1886	wm831x_otp_exit(wm831x);
1887	mfd_remove_devices(wm831x->dev);
1888	free_irq(wm831x_irq(wm831x, WM831X_IRQ_AUXADC_DATA), wm831x);
1889	wm831x_irq_exit(wm831x);
1890}
1891
1892int wm831x_device_suspend(struct wm831x *wm831x)
1893{
1894	int reg, mask;
1895
1896	/* If the charger IRQs are a wake source then make sure we ack
1897	 * them even if they're not actively being used (eg, no power
1898	 * driver or no IRQ line wired up) then acknowledge the
1899	 * interrupts otherwise suspend won't last very long.
1900	 */
1901	if (wm831x->charger_irq_wake) {
1902		reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
1903
1904		mask = WM831X_CHG_BATT_HOT_EINT |
1905			WM831X_CHG_BATT_COLD_EINT |
1906			WM831X_CHG_BATT_FAIL_EINT |
1907			WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
1908			WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
1909			WM831X_CHG_START_EINT;
1910
1911		/* If any of the interrupts are masked read the statuses */
1912		if (reg & mask)
1913			reg = wm831x_reg_read(wm831x,
1914					      WM831X_INTERRUPT_STATUS_2);
1915
1916		if (reg & mask) {
1917			dev_info(wm831x->dev,
1918				 "Acknowledging masked charger IRQs: %x\n",
1919				 reg & mask);
1920			wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
1921					 reg & mask);
1922		}
1923	}
1924
1925	return 0;
1926}
1927
1928void wm831x_device_shutdown(struct wm831x *wm831x)
1929{
1930	if (wm831x->soft_shutdown) {
1931		dev_info(wm831x->dev, "Initiating shutdown...\n");
1932		wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
1933	}
1934}
1935EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
1936
1937MODULE_DESCRIPTION("Core support for the WM831X AudioPlus PMIC");
1938MODULE_LICENSE("GPL");
1939MODULE_AUTHOR("Mark Brown");
1940