1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * wm831x-core.c -- Device access for Wolfson WM831x PMICs
4 *
5 * Copyright 2009 Wolfson Microelectronics PLC.
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/export.h>
13 #include <linux/bcd.h>
14 #include <linux/delay.h>
15 #include <linux/mfd/core.h>
16 #include <linux/slab.h>
17 #include <linux/err.h>
18 #include <linux/of.h>
19 #include <linux/of_device.h>
20
21 #include <linux/mfd/wm831x/core.h>
22 #include <linux/mfd/wm831x/pdata.h>
23 #include <linux/mfd/wm831x/irq.h>
24 #include <linux/mfd/wm831x/auxadc.h>
25 #include <linux/mfd/wm831x/otp.h>
26 #include <linux/mfd/wm831x/pmu.h>
27 #include <linux/mfd/wm831x/regulator.h>
28
29 /* Current settings - values are 2*2^(reg_val/4) microamps. These are
30 * exported since they are used by multiple drivers.
31 */
32 const unsigned int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
33 2,
34 2,
35 3,
36 3,
37 4,
38 5,
39 6,
40 7,
41 8,
42 10,
43 11,
44 13,
45 16,
46 19,
47 23,
48 27,
49 32,
50 38,
51 45,
52 54,
53 64,
54 76,
55 91,
56 108,
57 128,
58 152,
59 181,
60 215,
61 256,
62 304,
63 362,
64 431,
65 512,
66 609,
67 724,
68 861,
69 1024,
70 1218,
71 1448,
72 1722,
73 2048,
74 2435,
75 2896,
76 3444,
77 4096,
78 4871,
79 5793,
80 6889,
81 8192,
82 9742,
83 11585,
84 13777,
85 16384,
86 19484,
87 23170,
88 27554,
89 };
90 EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
91
wm831x_reg_locked(struct wm831x * wm831x,unsigned short reg)92 static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
93 {
94 if (!wm831x->locked)
95 return 0;
96
97 switch (reg) {
98 case WM831X_WATCHDOG:
99 case WM831X_DC4_CONTROL:
100 case WM831X_ON_PIN_CONTROL:
101 case WM831X_BACKUP_CHARGER_CONTROL:
102 case WM831X_CHARGER_CONTROL_1:
103 case WM831X_CHARGER_CONTROL_2:
104 return 1;
105
106 default:
107 return 0;
108 }
109 }
110
111 /**
112 * wm831x_reg_lock: Unlock user keyed registers
113 *
114 * The WM831x has a user key preventing writes to particularly
115 * critical registers. This function locks those registers,
116 * allowing writes to them.
117 *
118 * @wm831x: pointer to local driver data structure
119 */
wm831x_reg_lock(struct wm831x * wm831x)120 void 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 }
137 EXPORT_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 *
146 * @wm831x: pointer to local driver data structure
147 */
wm831x_reg_unlock(struct wm831x * wm831x)148 int wm831x_reg_unlock(struct wm831x *wm831x)
149 {
150 int ret;
151
152 /* 0x9716 is the value required to unlock the registers */
153 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
154 if (ret == 0) {
155 dev_vdbg(wm831x->dev, "Registers unlocked\n");
156
157 mutex_lock(&wm831x->io_lock);
158 WARN_ON(!wm831x->locked);
159 wm831x->locked = 0;
160 mutex_unlock(&wm831x->io_lock);
161 }
162
163 return ret;
164 }
165 EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
166
wm831x_reg_readable(struct device * dev,unsigned int reg)167 static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
168 {
169 switch (reg) {
170 case WM831X_RESET_ID:
171 case WM831X_REVISION:
172 case WM831X_PARENT_ID:
173 case WM831X_SYSVDD_CONTROL:
174 case WM831X_THERMAL_MONITORING:
175 case WM831X_POWER_STATE:
176 case WM831X_WATCHDOG:
177 case WM831X_ON_PIN_CONTROL:
178 case WM831X_RESET_CONTROL:
179 case WM831X_CONTROL_INTERFACE:
180 case WM831X_SECURITY_KEY:
181 case WM831X_SOFTWARE_SCRATCH:
182 case WM831X_OTP_CONTROL:
183 case WM831X_GPIO_LEVEL:
184 case WM831X_SYSTEM_STATUS:
185 case WM831X_ON_SOURCE:
186 case WM831X_OFF_SOURCE:
187 case WM831X_SYSTEM_INTERRUPTS:
188 case WM831X_INTERRUPT_STATUS_1:
189 case WM831X_INTERRUPT_STATUS_2:
190 case WM831X_INTERRUPT_STATUS_3:
191 case WM831X_INTERRUPT_STATUS_4:
192 case WM831X_INTERRUPT_STATUS_5:
193 case WM831X_IRQ_CONFIG:
194 case WM831X_SYSTEM_INTERRUPTS_MASK:
195 case WM831X_INTERRUPT_STATUS_1_MASK:
196 case WM831X_INTERRUPT_STATUS_2_MASK:
197 case WM831X_INTERRUPT_STATUS_3_MASK:
198 case WM831X_INTERRUPT_STATUS_4_MASK:
199 case WM831X_INTERRUPT_STATUS_5_MASK:
200 case WM831X_RTC_WRITE_COUNTER:
201 case WM831X_RTC_TIME_1:
202 case WM831X_RTC_TIME_2:
203 case WM831X_RTC_ALARM_1:
204 case WM831X_RTC_ALARM_2:
205 case WM831X_RTC_CONTROL:
206 case WM831X_RTC_TRIM:
207 case WM831X_TOUCH_CONTROL_1:
208 case WM831X_TOUCH_CONTROL_2:
209 case WM831X_TOUCH_DATA_X:
210 case WM831X_TOUCH_DATA_Y:
211 case WM831X_TOUCH_DATA_Z:
212 case WM831X_AUXADC_DATA:
213 case WM831X_AUXADC_CONTROL:
214 case WM831X_AUXADC_SOURCE:
215 case WM831X_COMPARATOR_CONTROL:
216 case WM831X_COMPARATOR_1:
217 case WM831X_COMPARATOR_2:
218 case WM831X_COMPARATOR_3:
219 case WM831X_COMPARATOR_4:
220 case WM831X_GPIO1_CONTROL:
221 case WM831X_GPIO2_CONTROL:
222 case WM831X_GPIO3_CONTROL:
223 case WM831X_GPIO4_CONTROL:
224 case WM831X_GPIO5_CONTROL:
225 case WM831X_GPIO6_CONTROL:
226 case WM831X_GPIO7_CONTROL:
227 case WM831X_GPIO8_CONTROL:
228 case WM831X_GPIO9_CONTROL:
229 case WM831X_GPIO10_CONTROL:
230 case WM831X_GPIO11_CONTROL:
231 case WM831X_GPIO12_CONTROL:
232 case WM831X_GPIO13_CONTROL:
233 case WM831X_GPIO14_CONTROL:
234 case WM831X_GPIO15_CONTROL:
235 case WM831X_GPIO16_CONTROL:
236 case WM831X_CHARGER_CONTROL_1:
237 case WM831X_CHARGER_CONTROL_2:
238 case WM831X_CHARGER_STATUS:
239 case WM831X_BACKUP_CHARGER_CONTROL:
240 case WM831X_STATUS_LED_1:
241 case WM831X_STATUS_LED_2:
242 case WM831X_CURRENT_SINK_1:
243 case WM831X_CURRENT_SINK_2:
244 case WM831X_DCDC_ENABLE:
245 case WM831X_LDO_ENABLE:
246 case WM831X_DCDC_STATUS:
247 case WM831X_LDO_STATUS:
248 case WM831X_DCDC_UV_STATUS:
249 case WM831X_LDO_UV_STATUS:
250 case WM831X_DC1_CONTROL_1:
251 case WM831X_DC1_CONTROL_2:
252 case WM831X_DC1_ON_CONFIG:
253 case WM831X_DC1_SLEEP_CONTROL:
254 case WM831X_DC1_DVS_CONTROL:
255 case WM831X_DC2_CONTROL_1:
256 case WM831X_DC2_CONTROL_2:
257 case WM831X_DC2_ON_CONFIG:
258 case WM831X_DC2_SLEEP_CONTROL:
259 case WM831X_DC2_DVS_CONTROL:
260 case WM831X_DC3_CONTROL_1:
261 case WM831X_DC3_CONTROL_2:
262 case WM831X_DC3_ON_CONFIG:
263 case WM831X_DC3_SLEEP_CONTROL:
264 case WM831X_DC4_CONTROL:
265 case WM831X_DC4_SLEEP_CONTROL:
266 case WM831X_EPE1_CONTROL:
267 case WM831X_EPE2_CONTROL:
268 case WM831X_LDO1_CONTROL:
269 case WM831X_LDO1_ON_CONTROL:
270 case WM831X_LDO1_SLEEP_CONTROL:
271 case WM831X_LDO2_CONTROL:
272 case WM831X_LDO2_ON_CONTROL:
273 case WM831X_LDO2_SLEEP_CONTROL:
274 case WM831X_LDO3_CONTROL:
275 case WM831X_LDO3_ON_CONTROL:
276 case WM831X_LDO3_SLEEP_CONTROL:
277 case WM831X_LDO4_CONTROL:
278 case WM831X_LDO4_ON_CONTROL:
279 case WM831X_LDO4_SLEEP_CONTROL:
280 case WM831X_LDO5_CONTROL:
281 case WM831X_LDO5_ON_CONTROL:
282 case WM831X_LDO5_SLEEP_CONTROL:
283 case WM831X_LDO6_CONTROL:
284 case WM831X_LDO6_ON_CONTROL:
285 case WM831X_LDO6_SLEEP_CONTROL:
286 case WM831X_LDO7_CONTROL:
287 case WM831X_LDO7_ON_CONTROL:
288 case WM831X_LDO7_SLEEP_CONTROL:
289 case WM831X_LDO8_CONTROL:
290 case WM831X_LDO8_ON_CONTROL:
291 case WM831X_LDO8_SLEEP_CONTROL:
292 case WM831X_LDO9_CONTROL:
293 case WM831X_LDO9_ON_CONTROL:
294 case WM831X_LDO9_SLEEP_CONTROL:
295 case WM831X_LDO10_CONTROL:
296 case WM831X_LDO10_ON_CONTROL:
297 case WM831X_LDO10_SLEEP_CONTROL:
298 case WM831X_LDO11_ON_CONTROL:
299 case WM831X_LDO11_SLEEP_CONTROL:
300 case WM831X_POWER_GOOD_SOURCE_1:
301 case WM831X_POWER_GOOD_SOURCE_2:
302 case WM831X_CLOCK_CONTROL_1:
303 case WM831X_CLOCK_CONTROL_2:
304 case WM831X_FLL_CONTROL_1:
305 case WM831X_FLL_CONTROL_2:
306 case WM831X_FLL_CONTROL_3:
307 case WM831X_FLL_CONTROL_4:
308 case WM831X_FLL_CONTROL_5:
309 case WM831X_UNIQUE_ID_1:
310 case WM831X_UNIQUE_ID_2:
311 case WM831X_UNIQUE_ID_3:
312 case WM831X_UNIQUE_ID_4:
313 case WM831X_UNIQUE_ID_5:
314 case WM831X_UNIQUE_ID_6:
315 case WM831X_UNIQUE_ID_7:
316 case WM831X_UNIQUE_ID_8:
317 case WM831X_FACTORY_OTP_ID:
318 case WM831X_FACTORY_OTP_1:
319 case WM831X_FACTORY_OTP_2:
320 case WM831X_FACTORY_OTP_3:
321 case WM831X_FACTORY_OTP_4:
322 case WM831X_FACTORY_OTP_5:
323 case WM831X_CUSTOMER_OTP_ID:
324 case WM831X_DC1_OTP_CONTROL:
325 case WM831X_DC2_OTP_CONTROL:
326 case WM831X_DC3_OTP_CONTROL:
327 case WM831X_LDO1_2_OTP_CONTROL:
328 case WM831X_LDO3_4_OTP_CONTROL:
329 case WM831X_LDO5_6_OTP_CONTROL:
330 case WM831X_LDO7_8_OTP_CONTROL:
331 case WM831X_LDO9_10_OTP_CONTROL:
332 case WM831X_LDO11_EPE_CONTROL:
333 case WM831X_GPIO1_OTP_CONTROL:
334 case WM831X_GPIO2_OTP_CONTROL:
335 case WM831X_GPIO3_OTP_CONTROL:
336 case WM831X_GPIO4_OTP_CONTROL:
337 case WM831X_GPIO5_OTP_CONTROL:
338 case WM831X_GPIO6_OTP_CONTROL:
339 case WM831X_DBE_CHECK_DATA:
340 return true;
341 default:
342 return false;
343 }
344 }
345
wm831x_reg_writeable(struct device * dev,unsigned int reg)346 static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
347 {
348 struct wm831x *wm831x = dev_get_drvdata(dev);
349
350 if (wm831x_reg_locked(wm831x, reg))
351 return false;
352
353 switch (reg) {
354 case WM831X_SYSVDD_CONTROL:
355 case WM831X_THERMAL_MONITORING:
356 case WM831X_POWER_STATE:
357 case WM831X_WATCHDOG:
358 case WM831X_ON_PIN_CONTROL:
359 case WM831X_RESET_CONTROL:
360 case WM831X_CONTROL_INTERFACE:
361 case WM831X_SECURITY_KEY:
362 case WM831X_SOFTWARE_SCRATCH:
363 case WM831X_OTP_CONTROL:
364 case WM831X_GPIO_LEVEL:
365 case WM831X_INTERRUPT_STATUS_1:
366 case WM831X_INTERRUPT_STATUS_2:
367 case WM831X_INTERRUPT_STATUS_3:
368 case WM831X_INTERRUPT_STATUS_4:
369 case WM831X_INTERRUPT_STATUS_5:
370 case WM831X_IRQ_CONFIG:
371 case WM831X_SYSTEM_INTERRUPTS_MASK:
372 case WM831X_INTERRUPT_STATUS_1_MASK:
373 case WM831X_INTERRUPT_STATUS_2_MASK:
374 case WM831X_INTERRUPT_STATUS_3_MASK:
375 case WM831X_INTERRUPT_STATUS_4_MASK:
376 case WM831X_INTERRUPT_STATUS_5_MASK:
377 case WM831X_RTC_TIME_1:
378 case WM831X_RTC_TIME_2:
379 case WM831X_RTC_ALARM_1:
380 case WM831X_RTC_ALARM_2:
381 case WM831X_RTC_CONTROL:
382 case WM831X_RTC_TRIM:
383 case WM831X_TOUCH_CONTROL_1:
384 case WM831X_TOUCH_CONTROL_2:
385 case WM831X_AUXADC_CONTROL:
386 case WM831X_AUXADC_SOURCE:
387 case WM831X_COMPARATOR_CONTROL:
388 case WM831X_COMPARATOR_1:
389 case WM831X_COMPARATOR_2:
390 case WM831X_COMPARATOR_3:
391 case WM831X_COMPARATOR_4:
392 case WM831X_GPIO1_CONTROL:
393 case WM831X_GPIO2_CONTROL:
394 case WM831X_GPIO3_CONTROL:
395 case WM831X_GPIO4_CONTROL:
396 case WM831X_GPIO5_CONTROL:
397 case WM831X_GPIO6_CONTROL:
398 case WM831X_GPIO7_CONTROL:
399 case WM831X_GPIO8_CONTROL:
400 case WM831X_GPIO9_CONTROL:
401 case WM831X_GPIO10_CONTROL:
402 case WM831X_GPIO11_CONTROL:
403 case WM831X_GPIO12_CONTROL:
404 case WM831X_GPIO13_CONTROL:
405 case WM831X_GPIO14_CONTROL:
406 case WM831X_GPIO15_CONTROL:
407 case WM831X_GPIO16_CONTROL:
408 case WM831X_CHARGER_CONTROL_1:
409 case WM831X_CHARGER_CONTROL_2:
410 case WM831X_CHARGER_STATUS:
411 case WM831X_BACKUP_CHARGER_CONTROL:
412 case WM831X_STATUS_LED_1:
413 case WM831X_STATUS_LED_2:
414 case WM831X_CURRENT_SINK_1:
415 case WM831X_CURRENT_SINK_2:
416 case WM831X_DCDC_ENABLE:
417 case WM831X_LDO_ENABLE:
418 case WM831X_DC1_CONTROL_1:
419 case WM831X_DC1_CONTROL_2:
420 case WM831X_DC1_ON_CONFIG:
421 case WM831X_DC1_SLEEP_CONTROL:
422 case WM831X_DC1_DVS_CONTROL:
423 case WM831X_DC2_CONTROL_1:
424 case WM831X_DC2_CONTROL_2:
425 case WM831X_DC2_ON_CONFIG:
426 case WM831X_DC2_SLEEP_CONTROL:
427 case WM831X_DC2_DVS_CONTROL:
428 case WM831X_DC3_CONTROL_1:
429 case WM831X_DC3_CONTROL_2:
430 case WM831X_DC3_ON_CONFIG:
431 case WM831X_DC3_SLEEP_CONTROL:
432 case WM831X_DC4_CONTROL:
433 case WM831X_DC4_SLEEP_CONTROL:
434 case WM831X_EPE1_CONTROL:
435 case WM831X_EPE2_CONTROL:
436 case WM831X_LDO1_CONTROL:
437 case WM831X_LDO1_ON_CONTROL:
438 case WM831X_LDO1_SLEEP_CONTROL:
439 case WM831X_LDO2_CONTROL:
440 case WM831X_LDO2_ON_CONTROL:
441 case WM831X_LDO2_SLEEP_CONTROL:
442 case WM831X_LDO3_CONTROL:
443 case WM831X_LDO3_ON_CONTROL:
444 case WM831X_LDO3_SLEEP_CONTROL:
445 case WM831X_LDO4_CONTROL:
446 case WM831X_LDO4_ON_CONTROL:
447 case WM831X_LDO4_SLEEP_CONTROL:
448 case WM831X_LDO5_CONTROL:
449 case WM831X_LDO5_ON_CONTROL:
450 case WM831X_LDO5_SLEEP_CONTROL:
451 case WM831X_LDO6_CONTROL:
452 case WM831X_LDO6_ON_CONTROL:
453 case WM831X_LDO6_SLEEP_CONTROL:
454 case WM831X_LDO7_CONTROL:
455 case WM831X_LDO7_ON_CONTROL:
456 case WM831X_LDO7_SLEEP_CONTROL:
457 case WM831X_LDO8_CONTROL:
458 case WM831X_LDO8_ON_CONTROL:
459 case WM831X_LDO8_SLEEP_CONTROL:
460 case WM831X_LDO9_CONTROL:
461 case WM831X_LDO9_ON_CONTROL:
462 case WM831X_LDO9_SLEEP_CONTROL:
463 case WM831X_LDO10_CONTROL:
464 case WM831X_LDO10_ON_CONTROL:
465 case WM831X_LDO10_SLEEP_CONTROL:
466 case WM831X_LDO11_ON_CONTROL:
467 case WM831X_LDO11_SLEEP_CONTROL:
468 case WM831X_POWER_GOOD_SOURCE_1:
469 case WM831X_POWER_GOOD_SOURCE_2:
470 case WM831X_CLOCK_CONTROL_1:
471 case WM831X_CLOCK_CONTROL_2:
472 case WM831X_FLL_CONTROL_1:
473 case WM831X_FLL_CONTROL_2:
474 case WM831X_FLL_CONTROL_3:
475 case WM831X_FLL_CONTROL_4:
476 case WM831X_FLL_CONTROL_5:
477 return true;
478 default:
479 return false;
480 }
481 }
482
wm831x_reg_volatile(struct device * dev,unsigned int reg)483 static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
484 {
485 switch (reg) {
486 case WM831X_SYSTEM_STATUS:
487 case WM831X_ON_SOURCE:
488 case WM831X_OFF_SOURCE:
489 case WM831X_GPIO_LEVEL:
490 case WM831X_SYSTEM_INTERRUPTS:
491 case WM831X_INTERRUPT_STATUS_1:
492 case WM831X_INTERRUPT_STATUS_2:
493 case WM831X_INTERRUPT_STATUS_3:
494 case WM831X_INTERRUPT_STATUS_4:
495 case WM831X_INTERRUPT_STATUS_5:
496 case WM831X_RTC_TIME_1:
497 case WM831X_RTC_TIME_2:
498 case WM831X_TOUCH_DATA_X:
499 case WM831X_TOUCH_DATA_Y:
500 case WM831X_TOUCH_DATA_Z:
501 case WM831X_AUXADC_DATA:
502 case WM831X_CHARGER_STATUS:
503 case WM831X_DCDC_STATUS:
504 case WM831X_LDO_STATUS:
505 case WM831X_DCDC_UV_STATUS:
506 case WM831X_LDO_UV_STATUS:
507 return true;
508 default:
509 return false;
510 }
511 }
512
513 /**
514 * wm831x_reg_read: Read a single WM831x register.
515 *
516 * @wm831x: Device to read from.
517 * @reg: Register to read.
518 */
wm831x_reg_read(struct wm831x * wm831x,unsigned short reg)519 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
520 {
521 unsigned int val;
522 int ret;
523
524 ret = regmap_read(wm831x->regmap, reg, &val);
525
526 if (ret < 0)
527 return ret;
528 else
529 return val;
530 }
531 EXPORT_SYMBOL_GPL(wm831x_reg_read);
532
533 /**
534 * wm831x_bulk_read: Read multiple WM831x registers
535 *
536 * @wm831x: Device to read from
537 * @reg: First register
538 * @count: Number of registers
539 * @buf: Buffer to fill.
540 */
wm831x_bulk_read(struct wm831x * wm831x,unsigned short reg,int count,u16 * buf)541 int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
542 int count, u16 *buf)
543 {
544 return regmap_bulk_read(wm831x->regmap, reg, buf, count);
545 }
546 EXPORT_SYMBOL_GPL(wm831x_bulk_read);
547
wm831x_write(struct wm831x * wm831x,unsigned short reg,int bytes,void * src)548 static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
549 int bytes, void *src)
550 {
551 u16 *buf = src;
552 int i, ret;
553
554 BUG_ON(bytes % 2);
555 BUG_ON(bytes <= 0);
556
557 for (i = 0; i < bytes / 2; i++) {
558 if (wm831x_reg_locked(wm831x, reg))
559 return -EPERM;
560
561 dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
562 buf[i], reg + i, reg + i);
563 ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
564 if (ret != 0)
565 return ret;
566 }
567
568 return 0;
569 }
570
571 /**
572 * wm831x_reg_write: Write a single WM831x register.
573 *
574 * @wm831x: Device to write to.
575 * @reg: Register to write to.
576 * @val: Value to write.
577 */
wm831x_reg_write(struct wm831x * wm831x,unsigned short reg,unsigned short val)578 int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
579 unsigned short val)
580 {
581 int ret;
582
583 mutex_lock(&wm831x->io_lock);
584
585 ret = wm831x_write(wm831x, reg, 2, &val);
586
587 mutex_unlock(&wm831x->io_lock);
588
589 return ret;
590 }
591 EXPORT_SYMBOL_GPL(wm831x_reg_write);
592
593 /**
594 * wm831x_set_bits: Set the value of a bitfield in a WM831x register
595 *
596 * @wm831x: Device to write to.
597 * @reg: Register to write to.
598 * @mask: Mask of bits to set.
599 * @val: Value to set (unshifted)
600 */
wm831x_set_bits(struct wm831x * wm831x,unsigned short reg,unsigned short mask,unsigned short val)601 int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
602 unsigned short mask, unsigned short val)
603 {
604 int ret;
605
606 mutex_lock(&wm831x->io_lock);
607
608 if (!wm831x_reg_locked(wm831x, reg))
609 ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
610 else
611 ret = -EPERM;
612
613 mutex_unlock(&wm831x->io_lock);
614
615 return ret;
616 }
617 EXPORT_SYMBOL_GPL(wm831x_set_bits);
618
619 static const struct resource wm831x_dcdc1_resources[] = {
620 {
621 .start = WM831X_DC1_CONTROL_1,
622 .end = WM831X_DC1_DVS_CONTROL,
623 .flags = IORESOURCE_REG,
624 },
625 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC1, "UV"),
626 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC1, "HC"),
627 };
628
629
630 static const struct resource wm831x_dcdc2_resources[] = {
631 {
632 .start = WM831X_DC2_CONTROL_1,
633 .end = WM831X_DC2_DVS_CONTROL,
634 .flags = IORESOURCE_REG,
635 },
636 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC2, "UV"),
637 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC2, "HC"),
638 };
639
640 static const struct resource wm831x_dcdc3_resources[] = {
641 {
642 .start = WM831X_DC3_CONTROL_1,
643 .end = WM831X_DC3_SLEEP_CONTROL,
644 .flags = IORESOURCE_REG,
645 },
646 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC3, "UV"),
647 };
648
649 static const struct resource wm831x_dcdc4_resources[] = {
650 {
651 .start = WM831X_DC4_CONTROL,
652 .end = WM831X_DC4_SLEEP_CONTROL,
653 .flags = IORESOURCE_REG,
654 },
655 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
656 };
657
658 static const struct resource wm8320_dcdc4_buck_resources[] = {
659 {
660 .start = WM831X_DC4_CONTROL,
661 .end = WM832X_DC4_SLEEP_CONTROL,
662 .flags = IORESOURCE_REG,
663 },
664 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
665 };
666
667 static const struct resource wm831x_gpio_resources[] = {
668 {
669 .start = WM831X_IRQ_GPIO_1,
670 .end = WM831X_IRQ_GPIO_16,
671 .flags = IORESOURCE_IRQ,
672 },
673 };
674
675 static const struct resource wm831x_isink1_resources[] = {
676 {
677 .start = WM831X_CURRENT_SINK_1,
678 .end = WM831X_CURRENT_SINK_1,
679 .flags = IORESOURCE_REG,
680 },
681 DEFINE_RES_IRQ(WM831X_IRQ_CS1),
682 };
683
684 static const struct resource wm831x_isink2_resources[] = {
685 {
686 .start = WM831X_CURRENT_SINK_2,
687 .end = WM831X_CURRENT_SINK_2,
688 .flags = IORESOURCE_REG,
689 },
690 DEFINE_RES_IRQ(WM831X_IRQ_CS2),
691 };
692
693 static const struct resource wm831x_ldo1_resources[] = {
694 {
695 .start = WM831X_LDO1_CONTROL,
696 .end = WM831X_LDO1_SLEEP_CONTROL,
697 .flags = IORESOURCE_REG,
698 },
699 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO1, "UV"),
700 };
701
702 static const struct resource wm831x_ldo2_resources[] = {
703 {
704 .start = WM831X_LDO2_CONTROL,
705 .end = WM831X_LDO2_SLEEP_CONTROL,
706 .flags = IORESOURCE_REG,
707 },
708 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO2, "UV"),
709 };
710
711 static const struct resource wm831x_ldo3_resources[] = {
712 {
713 .start = WM831X_LDO3_CONTROL,
714 .end = WM831X_LDO3_SLEEP_CONTROL,
715 .flags = IORESOURCE_REG,
716 },
717 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO3, "UV"),
718 };
719
720 static const struct resource wm831x_ldo4_resources[] = {
721 {
722 .start = WM831X_LDO4_CONTROL,
723 .end = WM831X_LDO4_SLEEP_CONTROL,
724 .flags = IORESOURCE_REG,
725 },
726 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO4, "UV"),
727 };
728
729 static const struct resource wm831x_ldo5_resources[] = {
730 {
731 .start = WM831X_LDO5_CONTROL,
732 .end = WM831X_LDO5_SLEEP_CONTROL,
733 .flags = IORESOURCE_REG,
734 },
735 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO5, "UV"),
736 };
737
738 static const struct resource wm831x_ldo6_resources[] = {
739 {
740 .start = WM831X_LDO6_CONTROL,
741 .end = WM831X_LDO6_SLEEP_CONTROL,
742 .flags = IORESOURCE_REG,
743 },
744 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO6, "UV"),
745 };
746
747 static const struct resource wm831x_ldo7_resources[] = {
748 {
749 .start = WM831X_LDO7_CONTROL,
750 .end = WM831X_LDO7_SLEEP_CONTROL,
751 .flags = IORESOURCE_REG,
752 },
753 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO7, "UV"),
754 };
755
756 static const struct resource wm831x_ldo8_resources[] = {
757 {
758 .start = WM831X_LDO8_CONTROL,
759 .end = WM831X_LDO8_SLEEP_CONTROL,
760 .flags = IORESOURCE_REG,
761 },
762 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO8, "UV"),
763 };
764
765 static const struct resource wm831x_ldo9_resources[] = {
766 {
767 .start = WM831X_LDO9_CONTROL,
768 .end = WM831X_LDO9_SLEEP_CONTROL,
769 .flags = IORESOURCE_REG,
770 },
771 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO9, "UV"),
772 };
773
774 static const struct resource wm831x_ldo10_resources[] = {
775 {
776 .start = WM831X_LDO10_CONTROL,
777 .end = WM831X_LDO10_SLEEP_CONTROL,
778 .flags = IORESOURCE_REG,
779 },
780 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO10, "UV"),
781 };
782
783 static const struct resource wm831x_ldo11_resources[] = {
784 {
785 .start = WM831X_LDO11_ON_CONTROL,
786 .end = WM831X_LDO11_SLEEP_CONTROL,
787 .flags = IORESOURCE_REG,
788 },
789 };
790
791 static const struct resource wm831x_on_resources[] = {
792 DEFINE_RES_IRQ(WM831X_IRQ_ON),
793 };
794
795
796 static const struct resource wm831x_power_resources[] = {
797 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_SYSLO, "SYSLO"),
798 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_PWR_SRC, "PWR SRC"),
799 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_USB_CURR, "USB CURR"),
800 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_HOT, "BATT HOT"),
801 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_COLD, "BATT COLD"),
802 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_FAIL, "BATT FAIL"),
803 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_OV, "OV"),
804 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_END, "END"),
805 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_TO, "TO"),
806 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_MODE, "MODE"),
807 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_START, "START"),
808 };
809
810 static const struct resource wm831x_rtc_resources[] = {
811 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_PER, "PER"),
812 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_ALM, "ALM"),
813 };
814
815 static const struct resource wm831x_status1_resources[] = {
816 {
817 .start = WM831X_STATUS_LED_1,
818 .end = WM831X_STATUS_LED_1,
819 .flags = IORESOURCE_REG,
820 },
821 };
822
823 static const struct resource wm831x_status2_resources[] = {
824 {
825 .start = WM831X_STATUS_LED_2,
826 .end = WM831X_STATUS_LED_2,
827 .flags = IORESOURCE_REG,
828 },
829 };
830
831 static const struct resource wm831x_touch_resources[] = {
832 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHPD, "TCHPD"),
833 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHDATA, "TCHDATA"),
834 };
835
836 static const struct resource wm831x_wdt_resources[] = {
837 DEFINE_RES_IRQ(WM831X_IRQ_WDOG_TO),
838 };
839
840 static const struct mfd_cell wm8310_devs[] = {
841 {
842 .name = "wm831x-backup",
843 },
844 {
845 .name = "wm831x-buckv",
846 .id = 1,
847 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
848 .resources = wm831x_dcdc1_resources,
849 },
850 {
851 .name = "wm831x-buckv",
852 .id = 2,
853 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
854 .resources = wm831x_dcdc2_resources,
855 },
856 {
857 .name = "wm831x-buckp",
858 .id = 3,
859 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
860 .resources = wm831x_dcdc3_resources,
861 },
862 {
863 .name = "wm831x-boostp",
864 .id = 4,
865 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
866 .resources = wm831x_dcdc4_resources,
867 },
868 {
869 .name = "wm831x-clk",
870 },
871 {
872 .name = "wm831x-epe",
873 .id = 1,
874 },
875 {
876 .name = "wm831x-epe",
877 .id = 2,
878 },
879 {
880 .name = "wm831x-gpio",
881 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
882 .resources = wm831x_gpio_resources,
883 },
884 {
885 .name = "wm831x-hwmon",
886 },
887 {
888 .name = "wm831x-isink",
889 .id = 1,
890 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
891 .resources = wm831x_isink1_resources,
892 },
893 {
894 .name = "wm831x-isink",
895 .id = 2,
896 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
897 .resources = wm831x_isink2_resources,
898 },
899 {
900 .name = "wm831x-ldo",
901 .id = 1,
902 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
903 .resources = wm831x_ldo1_resources,
904 },
905 {
906 .name = "wm831x-ldo",
907 .id = 2,
908 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
909 .resources = wm831x_ldo2_resources,
910 },
911 {
912 .name = "wm831x-ldo",
913 .id = 3,
914 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
915 .resources = wm831x_ldo3_resources,
916 },
917 {
918 .name = "wm831x-ldo",
919 .id = 4,
920 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
921 .resources = wm831x_ldo4_resources,
922 },
923 {
924 .name = "wm831x-ldo",
925 .id = 5,
926 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
927 .resources = wm831x_ldo5_resources,
928 },
929 {
930 .name = "wm831x-ldo",
931 .id = 6,
932 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
933 .resources = wm831x_ldo6_resources,
934 },
935 {
936 .name = "wm831x-aldo",
937 .id = 7,
938 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
939 .resources = wm831x_ldo7_resources,
940 },
941 {
942 .name = "wm831x-aldo",
943 .id = 8,
944 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
945 .resources = wm831x_ldo8_resources,
946 },
947 {
948 .name = "wm831x-aldo",
949 .id = 9,
950 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
951 .resources = wm831x_ldo9_resources,
952 },
953 {
954 .name = "wm831x-aldo",
955 .id = 10,
956 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
957 .resources = wm831x_ldo10_resources,
958 },
959 {
960 .name = "wm831x-alive-ldo",
961 .id = 11,
962 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
963 .resources = wm831x_ldo11_resources,
964 },
965 {
966 .name = "wm831x-on",
967 .num_resources = ARRAY_SIZE(wm831x_on_resources),
968 .resources = wm831x_on_resources,
969 },
970 {
971 .name = "wm831x-power",
972 .num_resources = ARRAY_SIZE(wm831x_power_resources),
973 .resources = wm831x_power_resources,
974 },
975 {
976 .name = "wm831x-status",
977 .id = 1,
978 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
979 .resources = wm831x_status1_resources,
980 },
981 {
982 .name = "wm831x-status",
983 .id = 2,
984 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
985 .resources = wm831x_status2_resources,
986 },
987 {
988 .name = "wm831x-watchdog",
989 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
990 .resources = wm831x_wdt_resources,
991 },
992 };
993
994 static const struct mfd_cell wm8311_devs[] = {
995 {
996 .name = "wm831x-backup",
997 },
998 {
999 .name = "wm831x-buckv",
1000 .id = 1,
1001 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1002 .resources = wm831x_dcdc1_resources,
1003 },
1004 {
1005 .name = "wm831x-buckv",
1006 .id = 2,
1007 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1008 .resources = wm831x_dcdc2_resources,
1009 },
1010 {
1011 .name = "wm831x-buckp",
1012 .id = 3,
1013 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1014 .resources = wm831x_dcdc3_resources,
1015 },
1016 {
1017 .name = "wm831x-boostp",
1018 .id = 4,
1019 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1020 .resources = wm831x_dcdc4_resources,
1021 },
1022 {
1023 .name = "wm831x-clk",
1024 },
1025 {
1026 .name = "wm831x-epe",
1027 .id = 1,
1028 },
1029 {
1030 .name = "wm831x-epe",
1031 .id = 2,
1032 },
1033 {
1034 .name = "wm831x-gpio",
1035 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1036 .resources = wm831x_gpio_resources,
1037 },
1038 {
1039 .name = "wm831x-hwmon",
1040 },
1041 {
1042 .name = "wm831x-isink",
1043 .id = 1,
1044 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1045 .resources = wm831x_isink1_resources,
1046 },
1047 {
1048 .name = "wm831x-isink",
1049 .id = 2,
1050 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1051 .resources = wm831x_isink2_resources,
1052 },
1053 {
1054 .name = "wm831x-ldo",
1055 .id = 1,
1056 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1057 .resources = wm831x_ldo1_resources,
1058 },
1059 {
1060 .name = "wm831x-ldo",
1061 .id = 2,
1062 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1063 .resources = wm831x_ldo2_resources,
1064 },
1065 {
1066 .name = "wm831x-ldo",
1067 .id = 3,
1068 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1069 .resources = wm831x_ldo3_resources,
1070 },
1071 {
1072 .name = "wm831x-ldo",
1073 .id = 4,
1074 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1075 .resources = wm831x_ldo4_resources,
1076 },
1077 {
1078 .name = "wm831x-ldo",
1079 .id = 5,
1080 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1081 .resources = wm831x_ldo5_resources,
1082 },
1083 {
1084 .name = "wm831x-aldo",
1085 .id = 7,
1086 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1087 .resources = wm831x_ldo7_resources,
1088 },
1089 {
1090 .name = "wm831x-alive-ldo",
1091 .id = 11,
1092 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1093 .resources = wm831x_ldo11_resources,
1094 },
1095 {
1096 .name = "wm831x-on",
1097 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1098 .resources = wm831x_on_resources,
1099 },
1100 {
1101 .name = "wm831x-power",
1102 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1103 .resources = wm831x_power_resources,
1104 },
1105 {
1106 .name = "wm831x-status",
1107 .id = 1,
1108 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1109 .resources = wm831x_status1_resources,
1110 },
1111 {
1112 .name = "wm831x-status",
1113 .id = 2,
1114 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1115 .resources = wm831x_status2_resources,
1116 },
1117 {
1118 .name = "wm831x-watchdog",
1119 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1120 .resources = wm831x_wdt_resources,
1121 },
1122 };
1123
1124 static const struct mfd_cell wm8312_devs[] = {
1125 {
1126 .name = "wm831x-backup",
1127 },
1128 {
1129 .name = "wm831x-buckv",
1130 .id = 1,
1131 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1132 .resources = wm831x_dcdc1_resources,
1133 },
1134 {
1135 .name = "wm831x-buckv",
1136 .id = 2,
1137 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1138 .resources = wm831x_dcdc2_resources,
1139 },
1140 {
1141 .name = "wm831x-buckp",
1142 .id = 3,
1143 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1144 .resources = wm831x_dcdc3_resources,
1145 },
1146 {
1147 .name = "wm831x-boostp",
1148 .id = 4,
1149 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1150 .resources = wm831x_dcdc4_resources,
1151 },
1152 {
1153 .name = "wm831x-clk",
1154 },
1155 {
1156 .name = "wm831x-epe",
1157 .id = 1,
1158 },
1159 {
1160 .name = "wm831x-epe",
1161 .id = 2,
1162 },
1163 {
1164 .name = "wm831x-gpio",
1165 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1166 .resources = wm831x_gpio_resources,
1167 },
1168 {
1169 .name = "wm831x-hwmon",
1170 },
1171 {
1172 .name = "wm831x-isink",
1173 .id = 1,
1174 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1175 .resources = wm831x_isink1_resources,
1176 },
1177 {
1178 .name = "wm831x-isink",
1179 .id = 2,
1180 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1181 .resources = wm831x_isink2_resources,
1182 },
1183 {
1184 .name = "wm831x-ldo",
1185 .id = 1,
1186 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1187 .resources = wm831x_ldo1_resources,
1188 },
1189 {
1190 .name = "wm831x-ldo",
1191 .id = 2,
1192 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1193 .resources = wm831x_ldo2_resources,
1194 },
1195 {
1196 .name = "wm831x-ldo",
1197 .id = 3,
1198 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1199 .resources = wm831x_ldo3_resources,
1200 },
1201 {
1202 .name = "wm831x-ldo",
1203 .id = 4,
1204 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1205 .resources = wm831x_ldo4_resources,
1206 },
1207 {
1208 .name = "wm831x-ldo",
1209 .id = 5,
1210 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1211 .resources = wm831x_ldo5_resources,
1212 },
1213 {
1214 .name = "wm831x-ldo",
1215 .id = 6,
1216 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1217 .resources = wm831x_ldo6_resources,
1218 },
1219 {
1220 .name = "wm831x-aldo",
1221 .id = 7,
1222 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1223 .resources = wm831x_ldo7_resources,
1224 },
1225 {
1226 .name = "wm831x-aldo",
1227 .id = 8,
1228 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1229 .resources = wm831x_ldo8_resources,
1230 },
1231 {
1232 .name = "wm831x-aldo",
1233 .id = 9,
1234 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1235 .resources = wm831x_ldo9_resources,
1236 },
1237 {
1238 .name = "wm831x-aldo",
1239 .id = 10,
1240 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1241 .resources = wm831x_ldo10_resources,
1242 },
1243 {
1244 .name = "wm831x-alive-ldo",
1245 .id = 11,
1246 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1247 .resources = wm831x_ldo11_resources,
1248 },
1249 {
1250 .name = "wm831x-on",
1251 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1252 .resources = wm831x_on_resources,
1253 },
1254 {
1255 .name = "wm831x-power",
1256 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1257 .resources = wm831x_power_resources,
1258 },
1259 {
1260 .name = "wm831x-status",
1261 .id = 1,
1262 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1263 .resources = wm831x_status1_resources,
1264 },
1265 {
1266 .name = "wm831x-status",
1267 .id = 2,
1268 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1269 .resources = wm831x_status2_resources,
1270 },
1271 {
1272 .name = "wm831x-watchdog",
1273 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1274 .resources = wm831x_wdt_resources,
1275 },
1276 };
1277
1278 static const struct mfd_cell wm8320_devs[] = {
1279 {
1280 .name = "wm831x-backup",
1281 },
1282 {
1283 .name = "wm831x-buckv",
1284 .id = 1,
1285 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1286 .resources = wm831x_dcdc1_resources,
1287 },
1288 {
1289 .name = "wm831x-buckv",
1290 .id = 2,
1291 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1292 .resources = wm831x_dcdc2_resources,
1293 },
1294 {
1295 .name = "wm831x-buckp",
1296 .id = 3,
1297 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1298 .resources = wm831x_dcdc3_resources,
1299 },
1300 {
1301 .name = "wm831x-buckp",
1302 .id = 4,
1303 .num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
1304 .resources = wm8320_dcdc4_buck_resources,
1305 },
1306 {
1307 .name = "wm831x-clk",
1308 },
1309 {
1310 .name = "wm831x-gpio",
1311 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1312 .resources = wm831x_gpio_resources,
1313 },
1314 {
1315 .name = "wm831x-hwmon",
1316 },
1317 {
1318 .name = "wm831x-ldo",
1319 .id = 1,
1320 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1321 .resources = wm831x_ldo1_resources,
1322 },
1323 {
1324 .name = "wm831x-ldo",
1325 .id = 2,
1326 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1327 .resources = wm831x_ldo2_resources,
1328 },
1329 {
1330 .name = "wm831x-ldo",
1331 .id = 3,
1332 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1333 .resources = wm831x_ldo3_resources,
1334 },
1335 {
1336 .name = "wm831x-ldo",
1337 .id = 4,
1338 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1339 .resources = wm831x_ldo4_resources,
1340 },
1341 {
1342 .name = "wm831x-ldo",
1343 .id = 5,
1344 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1345 .resources = wm831x_ldo5_resources,
1346 },
1347 {
1348 .name = "wm831x-ldo",
1349 .id = 6,
1350 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1351 .resources = wm831x_ldo6_resources,
1352 },
1353 {
1354 .name = "wm831x-aldo",
1355 .id = 7,
1356 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1357 .resources = wm831x_ldo7_resources,
1358 },
1359 {
1360 .name = "wm831x-aldo",
1361 .id = 8,
1362 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1363 .resources = wm831x_ldo8_resources,
1364 },
1365 {
1366 .name = "wm831x-aldo",
1367 .id = 9,
1368 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1369 .resources = wm831x_ldo9_resources,
1370 },
1371 {
1372 .name = "wm831x-aldo",
1373 .id = 10,
1374 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1375 .resources = wm831x_ldo10_resources,
1376 },
1377 {
1378 .name = "wm831x-alive-ldo",
1379 .id = 11,
1380 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1381 .resources = wm831x_ldo11_resources,
1382 },
1383 {
1384 .name = "wm831x-on",
1385 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1386 .resources = wm831x_on_resources,
1387 },
1388 {
1389 .name = "wm831x-status",
1390 .id = 1,
1391 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1392 .resources = wm831x_status1_resources,
1393 },
1394 {
1395 .name = "wm831x-status",
1396 .id = 2,
1397 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1398 .resources = wm831x_status2_resources,
1399 },
1400 {
1401 .name = "wm831x-watchdog",
1402 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1403 .resources = wm831x_wdt_resources,
1404 },
1405 };
1406
1407 static const struct mfd_cell touch_devs[] = {
1408 {
1409 .name = "wm831x-touch",
1410 .num_resources = ARRAY_SIZE(wm831x_touch_resources),
1411 .resources = wm831x_touch_resources,
1412 },
1413 };
1414
1415 static const struct mfd_cell rtc_devs[] = {
1416 {
1417 .name = "wm831x-rtc",
1418 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1419 .resources = wm831x_rtc_resources,
1420 },
1421 };
1422
1423 static const struct mfd_cell backlight_devs[] = {
1424 {
1425 .name = "wm831x-backlight",
1426 },
1427 };
1428
1429 struct regmap_config wm831x_regmap_config = {
1430 .reg_bits = 16,
1431 .val_bits = 16,
1432
1433 .cache_type = REGCACHE_RBTREE,
1434
1435 .max_register = WM831X_DBE_CHECK_DATA,
1436 .readable_reg = wm831x_reg_readable,
1437 .writeable_reg = wm831x_reg_writeable,
1438 .volatile_reg = wm831x_reg_volatile,
1439 };
1440 EXPORT_SYMBOL_GPL(wm831x_regmap_config);
1441
1442 const struct of_device_id wm831x_of_match[] = {
1443 { .compatible = "wlf,wm8310", .data = (void *)WM8310 },
1444 { .compatible = "wlf,wm8311", .data = (void *)WM8311 },
1445 { .compatible = "wlf,wm8312", .data = (void *)WM8312 },
1446 { .compatible = "wlf,wm8320", .data = (void *)WM8320 },
1447 { .compatible = "wlf,wm8321", .data = (void *)WM8321 },
1448 { .compatible = "wlf,wm8325", .data = (void *)WM8325 },
1449 { .compatible = "wlf,wm8326", .data = (void *)WM8326 },
1450 { },
1451 };
1452 EXPORT_SYMBOL_GPL(wm831x_of_match);
1453
1454 /*
1455 * Instantiate the generic non-control parts of the device.
1456 */
wm831x_device_init(struct wm831x * wm831x,int irq)1457 int wm831x_device_init(struct wm831x *wm831x, int irq)
1458 {
1459 struct wm831x_pdata *pdata = &wm831x->pdata;
1460 int rev, wm831x_num;
1461 enum wm831x_parent parent;
1462 int ret, i;
1463
1464 mutex_init(&wm831x->io_lock);
1465 mutex_init(&wm831x->key_lock);
1466 dev_set_drvdata(wm831x->dev, wm831x);
1467
1468 wm831x->soft_shutdown = pdata->soft_shutdown;
1469
1470 ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
1471 if (ret < 0) {
1472 dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
1473 goto err;
1474 }
1475 switch (ret) {
1476 case 0x6204:
1477 case 0x6246:
1478 break;
1479 default:
1480 dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
1481 ret = -EINVAL;
1482 goto err;
1483 }
1484
1485 ret = wm831x_reg_read(wm831x, WM831X_REVISION);
1486 if (ret < 0) {
1487 dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
1488 goto err;
1489 }
1490 rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
1491
1492 ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
1493 if (ret < 0) {
1494 dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
1495 goto err;
1496 }
1497
1498 /* Some engineering samples do not have the ID set, rely on
1499 * the device being registered correctly.
1500 */
1501 if (ret == 0) {
1502 dev_info(wm831x->dev, "Device is an engineering sample\n");
1503 ret = wm831x->type;
1504 }
1505
1506 switch (ret) {
1507 case WM8310:
1508 parent = WM8310;
1509 wm831x->num_gpio = 16;
1510 wm831x->charger_irq_wake = 1;
1511 if (rev > 0) {
1512 wm831x->has_gpio_ena = 1;
1513 wm831x->has_cs_sts = 1;
1514 }
1515
1516 dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
1517 break;
1518
1519 case WM8311:
1520 parent = WM8311;
1521 wm831x->num_gpio = 16;
1522 wm831x->charger_irq_wake = 1;
1523 if (rev > 0) {
1524 wm831x->has_gpio_ena = 1;
1525 wm831x->has_cs_sts = 1;
1526 }
1527
1528 dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
1529 break;
1530
1531 case WM8312:
1532 parent = WM8312;
1533 wm831x->num_gpio = 16;
1534 wm831x->charger_irq_wake = 1;
1535 if (rev > 0) {
1536 wm831x->has_gpio_ena = 1;
1537 wm831x->has_cs_sts = 1;
1538 }
1539
1540 dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
1541 break;
1542
1543 case WM8320:
1544 parent = WM8320;
1545 wm831x->num_gpio = 12;
1546 dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
1547 break;
1548
1549 case WM8321:
1550 parent = WM8321;
1551 wm831x->num_gpio = 12;
1552 dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
1553 break;
1554
1555 case WM8325:
1556 parent = WM8325;
1557 wm831x->num_gpio = 12;
1558 dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
1559 break;
1560
1561 case WM8326:
1562 parent = WM8326;
1563 wm831x->num_gpio = 12;
1564 dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
1565 break;
1566
1567 default:
1568 dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
1569 ret = -EINVAL;
1570 goto err;
1571 }
1572
1573 /* This will need revisiting in future but is OK for all
1574 * current parts.
1575 */
1576 if (parent != wm831x->type)
1577 dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
1578 wm831x->type);
1579
1580 /* Bootstrap the user key */
1581 ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
1582 if (ret < 0) {
1583 dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
1584 goto err;
1585 }
1586 if (ret != 0) {
1587 dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
1588 ret);
1589 wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
1590 }
1591 wm831x->locked = 1;
1592
1593 if (pdata->pre_init) {
1594 ret = pdata->pre_init(wm831x);
1595 if (ret != 0) {
1596 dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
1597 goto err;
1598 }
1599 }
1600
1601 for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
1602 if (!pdata->gpio_defaults[i])
1603 continue;
1604
1605 wm831x_reg_write(wm831x,
1606 WM831X_GPIO1_CONTROL + i,
1607 pdata->gpio_defaults[i] & 0xffff);
1608 }
1609
1610 /* Multiply by 10 as we have many subdevices of the same type */
1611 if (pdata->wm831x_num)
1612 wm831x_num = pdata->wm831x_num * 10;
1613 else
1614 wm831x_num = -1;
1615
1616 ret = wm831x_irq_init(wm831x, irq);
1617 if (ret != 0)
1618 goto err;
1619
1620 wm831x_auxadc_init(wm831x);
1621
1622 /* The core device is up, instantiate the subdevices. */
1623 switch (parent) {
1624 case WM8310:
1625 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1626 wm8310_devs, ARRAY_SIZE(wm8310_devs),
1627 NULL, 0, NULL);
1628 break;
1629
1630 case WM8311:
1631 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1632 wm8311_devs, ARRAY_SIZE(wm8311_devs),
1633 NULL, 0, NULL);
1634 if (!pdata->disable_touch)
1635 mfd_add_devices(wm831x->dev, wm831x_num,
1636 touch_devs, ARRAY_SIZE(touch_devs),
1637 NULL, 0, NULL);
1638 break;
1639
1640 case WM8312:
1641 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1642 wm8312_devs, ARRAY_SIZE(wm8312_devs),
1643 NULL, 0, NULL);
1644 if (!pdata->disable_touch)
1645 mfd_add_devices(wm831x->dev, wm831x_num,
1646 touch_devs, ARRAY_SIZE(touch_devs),
1647 NULL, 0, NULL);
1648 break;
1649
1650 case WM8320:
1651 case WM8321:
1652 case WM8325:
1653 case WM8326:
1654 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1655 wm8320_devs, ARRAY_SIZE(wm8320_devs),
1656 NULL, 0, NULL);
1657 break;
1658
1659 default:
1660 /* If this happens the bus probe function is buggy */
1661 BUG();
1662 }
1663
1664 if (ret != 0) {
1665 dev_err(wm831x->dev, "Failed to add children\n");
1666 goto err_irq;
1667 }
1668
1669 /* The RTC can only be used if the 32.768kHz crystal is
1670 * enabled; this can't be controlled by software at runtime.
1671 */
1672 ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
1673 if (ret < 0) {
1674 dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
1675 goto err_irq;
1676 }
1677
1678 if (ret & WM831X_XTAL_ENA) {
1679 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1680 rtc_devs, ARRAY_SIZE(rtc_devs),
1681 NULL, 0, NULL);
1682 if (ret != 0) {
1683 dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
1684 goto err_irq;
1685 }
1686 } else {
1687 dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
1688 }
1689
1690 if (pdata->backlight) {
1691 /* Treat errors as non-critical */
1692 ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
1693 ARRAY_SIZE(backlight_devs), NULL,
1694 0, NULL);
1695 if (ret < 0)
1696 dev_err(wm831x->dev, "Failed to add backlight: %d\n",
1697 ret);
1698 }
1699
1700 wm831x_otp_init(wm831x);
1701
1702 if (pdata->post_init) {
1703 ret = pdata->post_init(wm831x);
1704 if (ret != 0) {
1705 dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
1706 goto err_irq;
1707 }
1708 }
1709
1710 return 0;
1711
1712 err_irq:
1713 wm831x_irq_exit(wm831x);
1714 err:
1715 mfd_remove_devices(wm831x->dev);
1716 return ret;
1717 }
1718
wm831x_device_suspend(struct wm831x * wm831x)1719 int wm831x_device_suspend(struct wm831x *wm831x)
1720 {
1721 int reg, mask;
1722
1723 /* If the charger IRQs are a wake source then make sure we ack
1724 * them even if they're not actively being used (eg, no power
1725 * driver or no IRQ line wired up) then acknowledge the
1726 * interrupts otherwise suspend won't last very long.
1727 */
1728 if (wm831x->charger_irq_wake) {
1729 reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
1730
1731 mask = WM831X_CHG_BATT_HOT_EINT |
1732 WM831X_CHG_BATT_COLD_EINT |
1733 WM831X_CHG_BATT_FAIL_EINT |
1734 WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
1735 WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
1736 WM831X_CHG_START_EINT;
1737
1738 /* If any of the interrupts are masked read the statuses */
1739 if (reg & mask)
1740 reg = wm831x_reg_read(wm831x,
1741 WM831X_INTERRUPT_STATUS_2);
1742
1743 if (reg & mask) {
1744 dev_info(wm831x->dev,
1745 "Acknowledging masked charger IRQs: %x\n",
1746 reg & mask);
1747 wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
1748 reg & mask);
1749 }
1750 }
1751
1752 return 0;
1753 }
1754
wm831x_device_shutdown(struct wm831x * wm831x)1755 void wm831x_device_shutdown(struct wm831x *wm831x)
1756 {
1757 if (wm831x->soft_shutdown) {
1758 dev_info(wm831x->dev, "Initiating shutdown...\n");
1759 wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
1760 }
1761 }
1762 EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
1763