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/mod_devicetable.h>
19
20 #include <linux/mfd/wm831x/core.h>
21 #include <linux/mfd/wm831x/pdata.h>
22 #include <linux/mfd/wm831x/irq.h>
23 #include <linux/mfd/wm831x/auxadc.h>
24 #include <linux/mfd/wm831x/otp.h>
25 #include <linux/mfd/wm831x/pmu.h>
26 #include <linux/mfd/wm831x/regulator.h>
27
28 /* Current settings - values are 2*2^(reg_val/4) microamps. These are
29 * exported since they are used by multiple drivers.
30 */
31 const unsigned int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
32 2,
33 2,
34 3,
35 3,
36 4,
37 5,
38 6,
39 7,
40 8,
41 10,
42 11,
43 13,
44 16,
45 19,
46 23,
47 27,
48 32,
49 38,
50 45,
51 54,
52 64,
53 76,
54 91,
55 108,
56 128,
57 152,
58 181,
59 215,
60 256,
61 304,
62 362,
63 431,
64 512,
65 609,
66 724,
67 861,
68 1024,
69 1218,
70 1448,
71 1722,
72 2048,
73 2435,
74 2896,
75 3444,
76 4096,
77 4871,
78 5793,
79 6889,
80 8192,
81 9742,
82 11585,
83 13777,
84 16384,
85 19484,
86 23170,
87 27554,
88 };
89 EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
90
wm831x_reg_locked(struct wm831x * wm831x,unsigned short reg)91 static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
92 {
93 if (!wm831x->locked)
94 return 0;
95
96 switch (reg) {
97 case WM831X_WATCHDOG:
98 case WM831X_DC4_CONTROL:
99 case WM831X_ON_PIN_CONTROL:
100 case WM831X_BACKUP_CHARGER_CONTROL:
101 case WM831X_CHARGER_CONTROL_1:
102 case WM831X_CHARGER_CONTROL_2:
103 return 1;
104
105 default:
106 return 0;
107 }
108 }
109
110 /**
111 * wm831x_reg_lock: Unlock user keyed registers
112 *
113 * The WM831x has a user key preventing writes to particularly
114 * critical registers. This function locks those registers,
115 * allowing writes to them.
116 *
117 * @wm831x: pointer to local driver data structure
118 */
wm831x_reg_lock(struct wm831x * wm831x)119 void wm831x_reg_lock(struct wm831x *wm831x)
120 {
121 int ret;
122
123 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
124 if (ret == 0) {
125 dev_vdbg(wm831x->dev, "Registers locked\n");
126
127 mutex_lock(&wm831x->io_lock);
128 WARN_ON(wm831x->locked);
129 wm831x->locked = 1;
130 mutex_unlock(&wm831x->io_lock);
131 } else {
132 dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
133 }
134
135 }
136 EXPORT_SYMBOL_GPL(wm831x_reg_lock);
137
138 /**
139 * wm831x_reg_unlock: Unlock user keyed registers
140 *
141 * The WM831x has a user key preventing writes to particularly
142 * critical registers. This function locks those registers,
143 * preventing spurious writes.
144 *
145 * @wm831x: pointer to local driver data structure
146 */
wm831x_reg_unlock(struct wm831x * wm831x)147 int wm831x_reg_unlock(struct wm831x *wm831x)
148 {
149 int ret;
150
151 /* 0x9716 is the value required to unlock the registers */
152 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
153 if (ret == 0) {
154 dev_vdbg(wm831x->dev, "Registers unlocked\n");
155
156 mutex_lock(&wm831x->io_lock);
157 WARN_ON(!wm831x->locked);
158 wm831x->locked = 0;
159 mutex_unlock(&wm831x->io_lock);
160 }
161
162 return ret;
163 }
164 EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
165
wm831x_reg_readable(struct device * dev,unsigned int reg)166 static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
167 {
168 switch (reg) {
169 case WM831X_RESET_ID:
170 case WM831X_REVISION:
171 case WM831X_PARENT_ID:
172 case WM831X_SYSVDD_CONTROL:
173 case WM831X_THERMAL_MONITORING:
174 case WM831X_POWER_STATE:
175 case WM831X_WATCHDOG:
176 case WM831X_ON_PIN_CONTROL:
177 case WM831X_RESET_CONTROL:
178 case WM831X_CONTROL_INTERFACE:
179 case WM831X_SECURITY_KEY:
180 case WM831X_SOFTWARE_SCRATCH:
181 case WM831X_OTP_CONTROL:
182 case WM831X_GPIO_LEVEL:
183 case WM831X_SYSTEM_STATUS:
184 case WM831X_ON_SOURCE:
185 case WM831X_OFF_SOURCE:
186 case WM831X_SYSTEM_INTERRUPTS:
187 case WM831X_INTERRUPT_STATUS_1:
188 case WM831X_INTERRUPT_STATUS_2:
189 case WM831X_INTERRUPT_STATUS_3:
190 case WM831X_INTERRUPT_STATUS_4:
191 case WM831X_INTERRUPT_STATUS_5:
192 case WM831X_IRQ_CONFIG:
193 case WM831X_SYSTEM_INTERRUPTS_MASK:
194 case WM831X_INTERRUPT_STATUS_1_MASK:
195 case WM831X_INTERRUPT_STATUS_2_MASK:
196 case WM831X_INTERRUPT_STATUS_3_MASK:
197 case WM831X_INTERRUPT_STATUS_4_MASK:
198 case WM831X_INTERRUPT_STATUS_5_MASK:
199 case WM831X_RTC_WRITE_COUNTER:
200 case WM831X_RTC_TIME_1:
201 case WM831X_RTC_TIME_2:
202 case WM831X_RTC_ALARM_1:
203 case WM831X_RTC_ALARM_2:
204 case WM831X_RTC_CONTROL:
205 case WM831X_RTC_TRIM:
206 case WM831X_TOUCH_CONTROL_1:
207 case WM831X_TOUCH_CONTROL_2:
208 case WM831X_TOUCH_DATA_X:
209 case WM831X_TOUCH_DATA_Y:
210 case WM831X_TOUCH_DATA_Z:
211 case WM831X_AUXADC_DATA:
212 case WM831X_AUXADC_CONTROL:
213 case WM831X_AUXADC_SOURCE:
214 case WM831X_COMPARATOR_CONTROL:
215 case WM831X_COMPARATOR_1:
216 case WM831X_COMPARATOR_2:
217 case WM831X_COMPARATOR_3:
218 case WM831X_COMPARATOR_4:
219 case WM831X_GPIO1_CONTROL:
220 case WM831X_GPIO2_CONTROL:
221 case WM831X_GPIO3_CONTROL:
222 case WM831X_GPIO4_CONTROL:
223 case WM831X_GPIO5_CONTROL:
224 case WM831X_GPIO6_CONTROL:
225 case WM831X_GPIO7_CONTROL:
226 case WM831X_GPIO8_CONTROL:
227 case WM831X_GPIO9_CONTROL:
228 case WM831X_GPIO10_CONTROL:
229 case WM831X_GPIO11_CONTROL:
230 case WM831X_GPIO12_CONTROL:
231 case WM831X_GPIO13_CONTROL:
232 case WM831X_GPIO14_CONTROL:
233 case WM831X_GPIO15_CONTROL:
234 case WM831X_GPIO16_CONTROL:
235 case WM831X_CHARGER_CONTROL_1:
236 case WM831X_CHARGER_CONTROL_2:
237 case WM831X_CHARGER_STATUS:
238 case WM831X_BACKUP_CHARGER_CONTROL:
239 case WM831X_STATUS_LED_1:
240 case WM831X_STATUS_LED_2:
241 case WM831X_CURRENT_SINK_1:
242 case WM831X_CURRENT_SINK_2:
243 case WM831X_DCDC_ENABLE:
244 case WM831X_LDO_ENABLE:
245 case WM831X_DCDC_STATUS:
246 case WM831X_LDO_STATUS:
247 case WM831X_DCDC_UV_STATUS:
248 case WM831X_LDO_UV_STATUS:
249 case WM831X_DC1_CONTROL_1:
250 case WM831X_DC1_CONTROL_2:
251 case WM831X_DC1_ON_CONFIG:
252 case WM831X_DC1_SLEEP_CONTROL:
253 case WM831X_DC1_DVS_CONTROL:
254 case WM831X_DC2_CONTROL_1:
255 case WM831X_DC2_CONTROL_2:
256 case WM831X_DC2_ON_CONFIG:
257 case WM831X_DC2_SLEEP_CONTROL:
258 case WM831X_DC2_DVS_CONTROL:
259 case WM831X_DC3_CONTROL_1:
260 case WM831X_DC3_CONTROL_2:
261 case WM831X_DC3_ON_CONFIG:
262 case WM831X_DC3_SLEEP_CONTROL:
263 case WM831X_DC4_CONTROL:
264 case WM831X_DC4_SLEEP_CONTROL:
265 case WM831X_EPE1_CONTROL:
266 case WM831X_EPE2_CONTROL:
267 case WM831X_LDO1_CONTROL:
268 case WM831X_LDO1_ON_CONTROL:
269 case WM831X_LDO1_SLEEP_CONTROL:
270 case WM831X_LDO2_CONTROL:
271 case WM831X_LDO2_ON_CONTROL:
272 case WM831X_LDO2_SLEEP_CONTROL:
273 case WM831X_LDO3_CONTROL:
274 case WM831X_LDO3_ON_CONTROL:
275 case WM831X_LDO3_SLEEP_CONTROL:
276 case WM831X_LDO4_CONTROL:
277 case WM831X_LDO4_ON_CONTROL:
278 case WM831X_LDO4_SLEEP_CONTROL:
279 case WM831X_LDO5_CONTROL:
280 case WM831X_LDO5_ON_CONTROL:
281 case WM831X_LDO5_SLEEP_CONTROL:
282 case WM831X_LDO6_CONTROL:
283 case WM831X_LDO6_ON_CONTROL:
284 case WM831X_LDO6_SLEEP_CONTROL:
285 case WM831X_LDO7_CONTROL:
286 case WM831X_LDO7_ON_CONTROL:
287 case WM831X_LDO7_SLEEP_CONTROL:
288 case WM831X_LDO8_CONTROL:
289 case WM831X_LDO8_ON_CONTROL:
290 case WM831X_LDO8_SLEEP_CONTROL:
291 case WM831X_LDO9_CONTROL:
292 case WM831X_LDO9_ON_CONTROL:
293 case WM831X_LDO9_SLEEP_CONTROL:
294 case WM831X_LDO10_CONTROL:
295 case WM831X_LDO10_ON_CONTROL:
296 case WM831X_LDO10_SLEEP_CONTROL:
297 case WM831X_LDO11_ON_CONTROL:
298 case WM831X_LDO11_SLEEP_CONTROL:
299 case WM831X_POWER_GOOD_SOURCE_1:
300 case WM831X_POWER_GOOD_SOURCE_2:
301 case WM831X_CLOCK_CONTROL_1:
302 case WM831X_CLOCK_CONTROL_2:
303 case WM831X_FLL_CONTROL_1:
304 case WM831X_FLL_CONTROL_2:
305 case WM831X_FLL_CONTROL_3:
306 case WM831X_FLL_CONTROL_4:
307 case WM831X_FLL_CONTROL_5:
308 case WM831X_UNIQUE_ID_1:
309 case WM831X_UNIQUE_ID_2:
310 case WM831X_UNIQUE_ID_3:
311 case WM831X_UNIQUE_ID_4:
312 case WM831X_UNIQUE_ID_5:
313 case WM831X_UNIQUE_ID_6:
314 case WM831X_UNIQUE_ID_7:
315 case WM831X_UNIQUE_ID_8:
316 case WM831X_FACTORY_OTP_ID:
317 case WM831X_FACTORY_OTP_1:
318 case WM831X_FACTORY_OTP_2:
319 case WM831X_FACTORY_OTP_3:
320 case WM831X_FACTORY_OTP_4:
321 case WM831X_FACTORY_OTP_5:
322 case WM831X_CUSTOMER_OTP_ID:
323 case WM831X_DC1_OTP_CONTROL:
324 case WM831X_DC2_OTP_CONTROL:
325 case WM831X_DC3_OTP_CONTROL:
326 case WM831X_LDO1_2_OTP_CONTROL:
327 case WM831X_LDO3_4_OTP_CONTROL:
328 case WM831X_LDO5_6_OTP_CONTROL:
329 case WM831X_LDO7_8_OTP_CONTROL:
330 case WM831X_LDO9_10_OTP_CONTROL:
331 case WM831X_LDO11_EPE_CONTROL:
332 case WM831X_GPIO1_OTP_CONTROL:
333 case WM831X_GPIO2_OTP_CONTROL:
334 case WM831X_GPIO3_OTP_CONTROL:
335 case WM831X_GPIO4_OTP_CONTROL:
336 case WM831X_GPIO5_OTP_CONTROL:
337 case WM831X_GPIO6_OTP_CONTROL:
338 case WM831X_DBE_CHECK_DATA:
339 return true;
340 default:
341 return false;
342 }
343 }
344
wm831x_reg_writeable(struct device * dev,unsigned int reg)345 static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
346 {
347 struct wm831x *wm831x = dev_get_drvdata(dev);
348
349 if (wm831x_reg_locked(wm831x, reg))
350 return false;
351
352 switch (reg) {
353 case WM831X_SYSVDD_CONTROL:
354 case WM831X_THERMAL_MONITORING:
355 case WM831X_POWER_STATE:
356 case WM831X_WATCHDOG:
357 case WM831X_ON_PIN_CONTROL:
358 case WM831X_RESET_CONTROL:
359 case WM831X_CONTROL_INTERFACE:
360 case WM831X_SECURITY_KEY:
361 case WM831X_SOFTWARE_SCRATCH:
362 case WM831X_OTP_CONTROL:
363 case WM831X_GPIO_LEVEL:
364 case WM831X_INTERRUPT_STATUS_1:
365 case WM831X_INTERRUPT_STATUS_2:
366 case WM831X_INTERRUPT_STATUS_3:
367 case WM831X_INTERRUPT_STATUS_4:
368 case WM831X_INTERRUPT_STATUS_5:
369 case WM831X_IRQ_CONFIG:
370 case WM831X_SYSTEM_INTERRUPTS_MASK:
371 case WM831X_INTERRUPT_STATUS_1_MASK:
372 case WM831X_INTERRUPT_STATUS_2_MASK:
373 case WM831X_INTERRUPT_STATUS_3_MASK:
374 case WM831X_INTERRUPT_STATUS_4_MASK:
375 case WM831X_INTERRUPT_STATUS_5_MASK:
376 case WM831X_RTC_TIME_1:
377 case WM831X_RTC_TIME_2:
378 case WM831X_RTC_ALARM_1:
379 case WM831X_RTC_ALARM_2:
380 case WM831X_RTC_CONTROL:
381 case WM831X_RTC_TRIM:
382 case WM831X_TOUCH_CONTROL_1:
383 case WM831X_TOUCH_CONTROL_2:
384 case WM831X_AUXADC_CONTROL:
385 case WM831X_AUXADC_SOURCE:
386 case WM831X_COMPARATOR_CONTROL:
387 case WM831X_COMPARATOR_1:
388 case WM831X_COMPARATOR_2:
389 case WM831X_COMPARATOR_3:
390 case WM831X_COMPARATOR_4:
391 case WM831X_GPIO1_CONTROL:
392 case WM831X_GPIO2_CONTROL:
393 case WM831X_GPIO3_CONTROL:
394 case WM831X_GPIO4_CONTROL:
395 case WM831X_GPIO5_CONTROL:
396 case WM831X_GPIO6_CONTROL:
397 case WM831X_GPIO7_CONTROL:
398 case WM831X_GPIO8_CONTROL:
399 case WM831X_GPIO9_CONTROL:
400 case WM831X_GPIO10_CONTROL:
401 case WM831X_GPIO11_CONTROL:
402 case WM831X_GPIO12_CONTROL:
403 case WM831X_GPIO13_CONTROL:
404 case WM831X_GPIO14_CONTROL:
405 case WM831X_GPIO15_CONTROL:
406 case WM831X_GPIO16_CONTROL:
407 case WM831X_CHARGER_CONTROL_1:
408 case WM831X_CHARGER_CONTROL_2:
409 case WM831X_CHARGER_STATUS:
410 case WM831X_BACKUP_CHARGER_CONTROL:
411 case WM831X_STATUS_LED_1:
412 case WM831X_STATUS_LED_2:
413 case WM831X_CURRENT_SINK_1:
414 case WM831X_CURRENT_SINK_2:
415 case WM831X_DCDC_ENABLE:
416 case WM831X_LDO_ENABLE:
417 case WM831X_DC1_CONTROL_1:
418 case WM831X_DC1_CONTROL_2:
419 case WM831X_DC1_ON_CONFIG:
420 case WM831X_DC1_SLEEP_CONTROL:
421 case WM831X_DC1_DVS_CONTROL:
422 case WM831X_DC2_CONTROL_1:
423 case WM831X_DC2_CONTROL_2:
424 case WM831X_DC2_ON_CONFIG:
425 case WM831X_DC2_SLEEP_CONTROL:
426 case WM831X_DC2_DVS_CONTROL:
427 case WM831X_DC3_CONTROL_1:
428 case WM831X_DC3_CONTROL_2:
429 case WM831X_DC3_ON_CONFIG:
430 case WM831X_DC3_SLEEP_CONTROL:
431 case WM831X_DC4_CONTROL:
432 case WM831X_DC4_SLEEP_CONTROL:
433 case WM831X_EPE1_CONTROL:
434 case WM831X_EPE2_CONTROL:
435 case WM831X_LDO1_CONTROL:
436 case WM831X_LDO1_ON_CONTROL:
437 case WM831X_LDO1_SLEEP_CONTROL:
438 case WM831X_LDO2_CONTROL:
439 case WM831X_LDO2_ON_CONTROL:
440 case WM831X_LDO2_SLEEP_CONTROL:
441 case WM831X_LDO3_CONTROL:
442 case WM831X_LDO3_ON_CONTROL:
443 case WM831X_LDO3_SLEEP_CONTROL:
444 case WM831X_LDO4_CONTROL:
445 case WM831X_LDO4_ON_CONTROL:
446 case WM831X_LDO4_SLEEP_CONTROL:
447 case WM831X_LDO5_CONTROL:
448 case WM831X_LDO5_ON_CONTROL:
449 case WM831X_LDO5_SLEEP_CONTROL:
450 case WM831X_LDO6_CONTROL:
451 case WM831X_LDO6_ON_CONTROL:
452 case WM831X_LDO6_SLEEP_CONTROL:
453 case WM831X_LDO7_CONTROL:
454 case WM831X_LDO7_ON_CONTROL:
455 case WM831X_LDO7_SLEEP_CONTROL:
456 case WM831X_LDO8_CONTROL:
457 case WM831X_LDO8_ON_CONTROL:
458 case WM831X_LDO8_SLEEP_CONTROL:
459 case WM831X_LDO9_CONTROL:
460 case WM831X_LDO9_ON_CONTROL:
461 case WM831X_LDO9_SLEEP_CONTROL:
462 case WM831X_LDO10_CONTROL:
463 case WM831X_LDO10_ON_CONTROL:
464 case WM831X_LDO10_SLEEP_CONTROL:
465 case WM831X_LDO11_ON_CONTROL:
466 case WM831X_LDO11_SLEEP_CONTROL:
467 case WM831X_POWER_GOOD_SOURCE_1:
468 case WM831X_POWER_GOOD_SOURCE_2:
469 case WM831X_CLOCK_CONTROL_1:
470 case WM831X_CLOCK_CONTROL_2:
471 case WM831X_FLL_CONTROL_1:
472 case WM831X_FLL_CONTROL_2:
473 case WM831X_FLL_CONTROL_3:
474 case WM831X_FLL_CONTROL_4:
475 case WM831X_FLL_CONTROL_5:
476 return true;
477 default:
478 return false;
479 }
480 }
481
wm831x_reg_volatile(struct device * dev,unsigned int reg)482 static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
483 {
484 switch (reg) {
485 case WM831X_SYSTEM_STATUS:
486 case WM831X_ON_SOURCE:
487 case WM831X_OFF_SOURCE:
488 case WM831X_GPIO_LEVEL:
489 case WM831X_SYSTEM_INTERRUPTS:
490 case WM831X_INTERRUPT_STATUS_1:
491 case WM831X_INTERRUPT_STATUS_2:
492 case WM831X_INTERRUPT_STATUS_3:
493 case WM831X_INTERRUPT_STATUS_4:
494 case WM831X_INTERRUPT_STATUS_5:
495 case WM831X_RTC_TIME_1:
496 case WM831X_RTC_TIME_2:
497 case WM831X_TOUCH_DATA_X:
498 case WM831X_TOUCH_DATA_Y:
499 case WM831X_TOUCH_DATA_Z:
500 case WM831X_AUXADC_DATA:
501 case WM831X_CHARGER_STATUS:
502 case WM831X_DCDC_STATUS:
503 case WM831X_LDO_STATUS:
504 case WM831X_DCDC_UV_STATUS:
505 case WM831X_LDO_UV_STATUS:
506 return true;
507 default:
508 return false;
509 }
510 }
511
512 /**
513 * wm831x_reg_read: Read a single WM831x register.
514 *
515 * @wm831x: Device to read from.
516 * @reg: Register to read.
517 */
wm831x_reg_read(struct wm831x * wm831x,unsigned short reg)518 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
519 {
520 unsigned int val;
521 int ret;
522
523 ret = regmap_read(wm831x->regmap, reg, &val);
524
525 if (ret < 0)
526 return ret;
527 else
528 return val;
529 }
530 EXPORT_SYMBOL_GPL(wm831x_reg_read);
531
532 /**
533 * wm831x_bulk_read: Read multiple WM831x registers
534 *
535 * @wm831x: Device to read from
536 * @reg: First register
537 * @count: Number of registers
538 * @buf: Buffer to fill.
539 */
wm831x_bulk_read(struct wm831x * wm831x,unsigned short reg,int count,u16 * buf)540 int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
541 int count, u16 *buf)
542 {
543 return regmap_bulk_read(wm831x->regmap, reg, buf, count);
544 }
545 EXPORT_SYMBOL_GPL(wm831x_bulk_read);
546
wm831x_write(struct wm831x * wm831x,unsigned short reg,int bytes,void * src)547 static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
548 int bytes, void *src)
549 {
550 u16 *buf = src;
551 int i, ret;
552
553 BUG_ON(bytes % 2);
554 BUG_ON(bytes <= 0);
555
556 for (i = 0; i < bytes / 2; i++) {
557 if (wm831x_reg_locked(wm831x, reg))
558 return -EPERM;
559
560 dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
561 buf[i], reg + i, reg + i);
562 ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
563 if (ret != 0)
564 return ret;
565 }
566
567 return 0;
568 }
569
570 /**
571 * wm831x_reg_write: Write a single WM831x register.
572 *
573 * @wm831x: Device to write to.
574 * @reg: Register to write to.
575 * @val: Value to write.
576 */
wm831x_reg_write(struct wm831x * wm831x,unsigned short reg,unsigned short val)577 int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
578 unsigned short val)
579 {
580 int ret;
581
582 mutex_lock(&wm831x->io_lock);
583
584 ret = wm831x_write(wm831x, reg, 2, &val);
585
586 mutex_unlock(&wm831x->io_lock);
587
588 return ret;
589 }
590 EXPORT_SYMBOL_GPL(wm831x_reg_write);
591
592 /**
593 * wm831x_set_bits: Set the value of a bitfield in a WM831x register
594 *
595 * @wm831x: Device to write to.
596 * @reg: Register to write to.
597 * @mask: Mask of bits to set.
598 * @val: Value to set (unshifted)
599 */
wm831x_set_bits(struct wm831x * wm831x,unsigned short reg,unsigned short mask,unsigned short val)600 int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
601 unsigned short mask, unsigned short val)
602 {
603 int ret;
604
605 mutex_lock(&wm831x->io_lock);
606
607 if (!wm831x_reg_locked(wm831x, reg))
608 ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
609 else
610 ret = -EPERM;
611
612 mutex_unlock(&wm831x->io_lock);
613
614 return ret;
615 }
616 EXPORT_SYMBOL_GPL(wm831x_set_bits);
617
618 static const struct resource wm831x_dcdc1_resources[] = {
619 {
620 .start = WM831X_DC1_CONTROL_1,
621 .end = WM831X_DC1_DVS_CONTROL,
622 .flags = IORESOURCE_REG,
623 },
624 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC1, "UV"),
625 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC1, "HC"),
626 };
627
628
629 static const struct resource wm831x_dcdc2_resources[] = {
630 {
631 .start = WM831X_DC2_CONTROL_1,
632 .end = WM831X_DC2_DVS_CONTROL,
633 .flags = IORESOURCE_REG,
634 },
635 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC2, "UV"),
636 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC2, "HC"),
637 };
638
639 static const struct resource wm831x_dcdc3_resources[] = {
640 {
641 .start = WM831X_DC3_CONTROL_1,
642 .end = WM831X_DC3_SLEEP_CONTROL,
643 .flags = IORESOURCE_REG,
644 },
645 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC3, "UV"),
646 };
647
648 static const struct resource wm831x_dcdc4_resources[] = {
649 {
650 .start = WM831X_DC4_CONTROL,
651 .end = WM831X_DC4_SLEEP_CONTROL,
652 .flags = IORESOURCE_REG,
653 },
654 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
655 };
656
657 static const struct resource wm8320_dcdc4_buck_resources[] = {
658 {
659 .start = WM831X_DC4_CONTROL,
660 .end = WM832X_DC4_SLEEP_CONTROL,
661 .flags = IORESOURCE_REG,
662 },
663 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
664 };
665
666 static const struct resource wm831x_gpio_resources[] = {
667 {
668 .start = WM831X_IRQ_GPIO_1,
669 .end = WM831X_IRQ_GPIO_16,
670 .flags = IORESOURCE_IRQ,
671 },
672 };
673
674 static const struct resource wm831x_isink1_resources[] = {
675 {
676 .start = WM831X_CURRENT_SINK_1,
677 .end = WM831X_CURRENT_SINK_1,
678 .flags = IORESOURCE_REG,
679 },
680 DEFINE_RES_IRQ(WM831X_IRQ_CS1),
681 };
682
683 static const struct resource wm831x_isink2_resources[] = {
684 {
685 .start = WM831X_CURRENT_SINK_2,
686 .end = WM831X_CURRENT_SINK_2,
687 .flags = IORESOURCE_REG,
688 },
689 DEFINE_RES_IRQ(WM831X_IRQ_CS2),
690 };
691
692 static const struct resource wm831x_ldo1_resources[] = {
693 {
694 .start = WM831X_LDO1_CONTROL,
695 .end = WM831X_LDO1_SLEEP_CONTROL,
696 .flags = IORESOURCE_REG,
697 },
698 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO1, "UV"),
699 };
700
701 static const struct resource wm831x_ldo2_resources[] = {
702 {
703 .start = WM831X_LDO2_CONTROL,
704 .end = WM831X_LDO2_SLEEP_CONTROL,
705 .flags = IORESOURCE_REG,
706 },
707 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO2, "UV"),
708 };
709
710 static const struct resource wm831x_ldo3_resources[] = {
711 {
712 .start = WM831X_LDO3_CONTROL,
713 .end = WM831X_LDO3_SLEEP_CONTROL,
714 .flags = IORESOURCE_REG,
715 },
716 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO3, "UV"),
717 };
718
719 static const struct resource wm831x_ldo4_resources[] = {
720 {
721 .start = WM831X_LDO4_CONTROL,
722 .end = WM831X_LDO4_SLEEP_CONTROL,
723 .flags = IORESOURCE_REG,
724 },
725 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO4, "UV"),
726 };
727
728 static const struct resource wm831x_ldo5_resources[] = {
729 {
730 .start = WM831X_LDO5_CONTROL,
731 .end = WM831X_LDO5_SLEEP_CONTROL,
732 .flags = IORESOURCE_REG,
733 },
734 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO5, "UV"),
735 };
736
737 static const struct resource wm831x_ldo6_resources[] = {
738 {
739 .start = WM831X_LDO6_CONTROL,
740 .end = WM831X_LDO6_SLEEP_CONTROL,
741 .flags = IORESOURCE_REG,
742 },
743 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO6, "UV"),
744 };
745
746 static const struct resource wm831x_ldo7_resources[] = {
747 {
748 .start = WM831X_LDO7_CONTROL,
749 .end = WM831X_LDO7_SLEEP_CONTROL,
750 .flags = IORESOURCE_REG,
751 },
752 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO7, "UV"),
753 };
754
755 static const struct resource wm831x_ldo8_resources[] = {
756 {
757 .start = WM831X_LDO8_CONTROL,
758 .end = WM831X_LDO8_SLEEP_CONTROL,
759 .flags = IORESOURCE_REG,
760 },
761 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO8, "UV"),
762 };
763
764 static const struct resource wm831x_ldo9_resources[] = {
765 {
766 .start = WM831X_LDO9_CONTROL,
767 .end = WM831X_LDO9_SLEEP_CONTROL,
768 .flags = IORESOURCE_REG,
769 },
770 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO9, "UV"),
771 };
772
773 static const struct resource wm831x_ldo10_resources[] = {
774 {
775 .start = WM831X_LDO10_CONTROL,
776 .end = WM831X_LDO10_SLEEP_CONTROL,
777 .flags = IORESOURCE_REG,
778 },
779 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO10, "UV"),
780 };
781
782 static const struct resource wm831x_ldo11_resources[] = {
783 {
784 .start = WM831X_LDO11_ON_CONTROL,
785 .end = WM831X_LDO11_SLEEP_CONTROL,
786 .flags = IORESOURCE_REG,
787 },
788 };
789
790 static const struct resource wm831x_on_resources[] = {
791 DEFINE_RES_IRQ(WM831X_IRQ_ON),
792 };
793
794
795 static const struct resource wm831x_power_resources[] = {
796 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_SYSLO, "SYSLO"),
797 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_PWR_SRC, "PWR SRC"),
798 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_USB_CURR, "USB CURR"),
799 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_HOT, "BATT HOT"),
800 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_COLD, "BATT COLD"),
801 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_FAIL, "BATT FAIL"),
802 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_OV, "OV"),
803 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_END, "END"),
804 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_TO, "TO"),
805 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_MODE, "MODE"),
806 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_START, "START"),
807 };
808
809 static const struct resource wm831x_rtc_resources[] = {
810 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_PER, "PER"),
811 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_ALM, "ALM"),
812 };
813
814 static const struct resource wm831x_status1_resources[] = {
815 {
816 .start = WM831X_STATUS_LED_1,
817 .end = WM831X_STATUS_LED_1,
818 .flags = IORESOURCE_REG,
819 },
820 };
821
822 static const struct resource wm831x_status2_resources[] = {
823 {
824 .start = WM831X_STATUS_LED_2,
825 .end = WM831X_STATUS_LED_2,
826 .flags = IORESOURCE_REG,
827 },
828 };
829
830 static const struct resource wm831x_touch_resources[] = {
831 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHPD, "TCHPD"),
832 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHDATA, "TCHDATA"),
833 };
834
835 static const struct resource wm831x_wdt_resources[] = {
836 DEFINE_RES_IRQ(WM831X_IRQ_WDOG_TO),
837 };
838
839 static const struct mfd_cell wm8310_devs[] = {
840 {
841 .name = "wm831x-backup",
842 },
843 {
844 .name = "wm831x-buckv",
845 .id = 1,
846 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
847 .resources = wm831x_dcdc1_resources,
848 },
849 {
850 .name = "wm831x-buckv",
851 .id = 2,
852 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
853 .resources = wm831x_dcdc2_resources,
854 },
855 {
856 .name = "wm831x-buckp",
857 .id = 3,
858 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
859 .resources = wm831x_dcdc3_resources,
860 },
861 {
862 .name = "wm831x-boostp",
863 .id = 4,
864 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
865 .resources = wm831x_dcdc4_resources,
866 },
867 {
868 .name = "wm831x-clk",
869 },
870 {
871 .name = "wm831x-epe",
872 .id = 1,
873 },
874 {
875 .name = "wm831x-epe",
876 .id = 2,
877 },
878 {
879 .name = "wm831x-gpio",
880 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
881 .resources = wm831x_gpio_resources,
882 },
883 {
884 .name = "wm831x-hwmon",
885 },
886 {
887 .name = "wm831x-isink",
888 .id = 1,
889 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
890 .resources = wm831x_isink1_resources,
891 },
892 {
893 .name = "wm831x-isink",
894 .id = 2,
895 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
896 .resources = wm831x_isink2_resources,
897 },
898 {
899 .name = "wm831x-ldo",
900 .id = 1,
901 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
902 .resources = wm831x_ldo1_resources,
903 },
904 {
905 .name = "wm831x-ldo",
906 .id = 2,
907 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
908 .resources = wm831x_ldo2_resources,
909 },
910 {
911 .name = "wm831x-ldo",
912 .id = 3,
913 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
914 .resources = wm831x_ldo3_resources,
915 },
916 {
917 .name = "wm831x-ldo",
918 .id = 4,
919 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
920 .resources = wm831x_ldo4_resources,
921 },
922 {
923 .name = "wm831x-ldo",
924 .id = 5,
925 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
926 .resources = wm831x_ldo5_resources,
927 },
928 {
929 .name = "wm831x-ldo",
930 .id = 6,
931 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
932 .resources = wm831x_ldo6_resources,
933 },
934 {
935 .name = "wm831x-aldo",
936 .id = 7,
937 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
938 .resources = wm831x_ldo7_resources,
939 },
940 {
941 .name = "wm831x-aldo",
942 .id = 8,
943 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
944 .resources = wm831x_ldo8_resources,
945 },
946 {
947 .name = "wm831x-aldo",
948 .id = 9,
949 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
950 .resources = wm831x_ldo9_resources,
951 },
952 {
953 .name = "wm831x-aldo",
954 .id = 10,
955 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
956 .resources = wm831x_ldo10_resources,
957 },
958 {
959 .name = "wm831x-alive-ldo",
960 .id = 11,
961 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
962 .resources = wm831x_ldo11_resources,
963 },
964 {
965 .name = "wm831x-on",
966 .num_resources = ARRAY_SIZE(wm831x_on_resources),
967 .resources = wm831x_on_resources,
968 },
969 {
970 .name = "wm831x-power",
971 .num_resources = ARRAY_SIZE(wm831x_power_resources),
972 .resources = wm831x_power_resources,
973 },
974 {
975 .name = "wm831x-status",
976 .id = 1,
977 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
978 .resources = wm831x_status1_resources,
979 },
980 {
981 .name = "wm831x-status",
982 .id = 2,
983 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
984 .resources = wm831x_status2_resources,
985 },
986 {
987 .name = "wm831x-watchdog",
988 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
989 .resources = wm831x_wdt_resources,
990 },
991 };
992
993 static const struct mfd_cell wm8311_devs[] = {
994 {
995 .name = "wm831x-backup",
996 },
997 {
998 .name = "wm831x-buckv",
999 .id = 1,
1000 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1001 .resources = wm831x_dcdc1_resources,
1002 },
1003 {
1004 .name = "wm831x-buckv",
1005 .id = 2,
1006 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1007 .resources = wm831x_dcdc2_resources,
1008 },
1009 {
1010 .name = "wm831x-buckp",
1011 .id = 3,
1012 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1013 .resources = wm831x_dcdc3_resources,
1014 },
1015 {
1016 .name = "wm831x-boostp",
1017 .id = 4,
1018 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1019 .resources = wm831x_dcdc4_resources,
1020 },
1021 {
1022 .name = "wm831x-clk",
1023 },
1024 {
1025 .name = "wm831x-epe",
1026 .id = 1,
1027 },
1028 {
1029 .name = "wm831x-epe",
1030 .id = 2,
1031 },
1032 {
1033 .name = "wm831x-gpio",
1034 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1035 .resources = wm831x_gpio_resources,
1036 },
1037 {
1038 .name = "wm831x-hwmon",
1039 },
1040 {
1041 .name = "wm831x-isink",
1042 .id = 1,
1043 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1044 .resources = wm831x_isink1_resources,
1045 },
1046 {
1047 .name = "wm831x-isink",
1048 .id = 2,
1049 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1050 .resources = wm831x_isink2_resources,
1051 },
1052 {
1053 .name = "wm831x-ldo",
1054 .id = 1,
1055 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1056 .resources = wm831x_ldo1_resources,
1057 },
1058 {
1059 .name = "wm831x-ldo",
1060 .id = 2,
1061 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1062 .resources = wm831x_ldo2_resources,
1063 },
1064 {
1065 .name = "wm831x-ldo",
1066 .id = 3,
1067 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1068 .resources = wm831x_ldo3_resources,
1069 },
1070 {
1071 .name = "wm831x-ldo",
1072 .id = 4,
1073 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1074 .resources = wm831x_ldo4_resources,
1075 },
1076 {
1077 .name = "wm831x-ldo",
1078 .id = 5,
1079 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1080 .resources = wm831x_ldo5_resources,
1081 },
1082 {
1083 .name = "wm831x-aldo",
1084 .id = 7,
1085 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1086 .resources = wm831x_ldo7_resources,
1087 },
1088 {
1089 .name = "wm831x-alive-ldo",
1090 .id = 11,
1091 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1092 .resources = wm831x_ldo11_resources,
1093 },
1094 {
1095 .name = "wm831x-on",
1096 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1097 .resources = wm831x_on_resources,
1098 },
1099 {
1100 .name = "wm831x-power",
1101 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1102 .resources = wm831x_power_resources,
1103 },
1104 {
1105 .name = "wm831x-status",
1106 .id = 1,
1107 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1108 .resources = wm831x_status1_resources,
1109 },
1110 {
1111 .name = "wm831x-status",
1112 .id = 2,
1113 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1114 .resources = wm831x_status2_resources,
1115 },
1116 {
1117 .name = "wm831x-watchdog",
1118 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1119 .resources = wm831x_wdt_resources,
1120 },
1121 };
1122
1123 static const struct mfd_cell wm8312_devs[] = {
1124 {
1125 .name = "wm831x-backup",
1126 },
1127 {
1128 .name = "wm831x-buckv",
1129 .id = 1,
1130 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1131 .resources = wm831x_dcdc1_resources,
1132 },
1133 {
1134 .name = "wm831x-buckv",
1135 .id = 2,
1136 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1137 .resources = wm831x_dcdc2_resources,
1138 },
1139 {
1140 .name = "wm831x-buckp",
1141 .id = 3,
1142 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1143 .resources = wm831x_dcdc3_resources,
1144 },
1145 {
1146 .name = "wm831x-boostp",
1147 .id = 4,
1148 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1149 .resources = wm831x_dcdc4_resources,
1150 },
1151 {
1152 .name = "wm831x-clk",
1153 },
1154 {
1155 .name = "wm831x-epe",
1156 .id = 1,
1157 },
1158 {
1159 .name = "wm831x-epe",
1160 .id = 2,
1161 },
1162 {
1163 .name = "wm831x-gpio",
1164 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1165 .resources = wm831x_gpio_resources,
1166 },
1167 {
1168 .name = "wm831x-hwmon",
1169 },
1170 {
1171 .name = "wm831x-isink",
1172 .id = 1,
1173 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1174 .resources = wm831x_isink1_resources,
1175 },
1176 {
1177 .name = "wm831x-isink",
1178 .id = 2,
1179 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1180 .resources = wm831x_isink2_resources,
1181 },
1182 {
1183 .name = "wm831x-ldo",
1184 .id = 1,
1185 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1186 .resources = wm831x_ldo1_resources,
1187 },
1188 {
1189 .name = "wm831x-ldo",
1190 .id = 2,
1191 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1192 .resources = wm831x_ldo2_resources,
1193 },
1194 {
1195 .name = "wm831x-ldo",
1196 .id = 3,
1197 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1198 .resources = wm831x_ldo3_resources,
1199 },
1200 {
1201 .name = "wm831x-ldo",
1202 .id = 4,
1203 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1204 .resources = wm831x_ldo4_resources,
1205 },
1206 {
1207 .name = "wm831x-ldo",
1208 .id = 5,
1209 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1210 .resources = wm831x_ldo5_resources,
1211 },
1212 {
1213 .name = "wm831x-ldo",
1214 .id = 6,
1215 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1216 .resources = wm831x_ldo6_resources,
1217 },
1218 {
1219 .name = "wm831x-aldo",
1220 .id = 7,
1221 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1222 .resources = wm831x_ldo7_resources,
1223 },
1224 {
1225 .name = "wm831x-aldo",
1226 .id = 8,
1227 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1228 .resources = wm831x_ldo8_resources,
1229 },
1230 {
1231 .name = "wm831x-aldo",
1232 .id = 9,
1233 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1234 .resources = wm831x_ldo9_resources,
1235 },
1236 {
1237 .name = "wm831x-aldo",
1238 .id = 10,
1239 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1240 .resources = wm831x_ldo10_resources,
1241 },
1242 {
1243 .name = "wm831x-alive-ldo",
1244 .id = 11,
1245 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1246 .resources = wm831x_ldo11_resources,
1247 },
1248 {
1249 .name = "wm831x-on",
1250 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1251 .resources = wm831x_on_resources,
1252 },
1253 {
1254 .name = "wm831x-power",
1255 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1256 .resources = wm831x_power_resources,
1257 },
1258 {
1259 .name = "wm831x-status",
1260 .id = 1,
1261 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1262 .resources = wm831x_status1_resources,
1263 },
1264 {
1265 .name = "wm831x-status",
1266 .id = 2,
1267 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1268 .resources = wm831x_status2_resources,
1269 },
1270 {
1271 .name = "wm831x-watchdog",
1272 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1273 .resources = wm831x_wdt_resources,
1274 },
1275 };
1276
1277 static const struct mfd_cell wm8320_devs[] = {
1278 {
1279 .name = "wm831x-backup",
1280 },
1281 {
1282 .name = "wm831x-buckv",
1283 .id = 1,
1284 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1285 .resources = wm831x_dcdc1_resources,
1286 },
1287 {
1288 .name = "wm831x-buckv",
1289 .id = 2,
1290 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1291 .resources = wm831x_dcdc2_resources,
1292 },
1293 {
1294 .name = "wm831x-buckp",
1295 .id = 3,
1296 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1297 .resources = wm831x_dcdc3_resources,
1298 },
1299 {
1300 .name = "wm831x-buckp",
1301 .id = 4,
1302 .num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
1303 .resources = wm8320_dcdc4_buck_resources,
1304 },
1305 {
1306 .name = "wm831x-clk",
1307 },
1308 {
1309 .name = "wm831x-gpio",
1310 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1311 .resources = wm831x_gpio_resources,
1312 },
1313 {
1314 .name = "wm831x-hwmon",
1315 },
1316 {
1317 .name = "wm831x-ldo",
1318 .id = 1,
1319 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1320 .resources = wm831x_ldo1_resources,
1321 },
1322 {
1323 .name = "wm831x-ldo",
1324 .id = 2,
1325 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1326 .resources = wm831x_ldo2_resources,
1327 },
1328 {
1329 .name = "wm831x-ldo",
1330 .id = 3,
1331 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1332 .resources = wm831x_ldo3_resources,
1333 },
1334 {
1335 .name = "wm831x-ldo",
1336 .id = 4,
1337 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1338 .resources = wm831x_ldo4_resources,
1339 },
1340 {
1341 .name = "wm831x-ldo",
1342 .id = 5,
1343 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1344 .resources = wm831x_ldo5_resources,
1345 },
1346 {
1347 .name = "wm831x-ldo",
1348 .id = 6,
1349 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1350 .resources = wm831x_ldo6_resources,
1351 },
1352 {
1353 .name = "wm831x-aldo",
1354 .id = 7,
1355 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1356 .resources = wm831x_ldo7_resources,
1357 },
1358 {
1359 .name = "wm831x-aldo",
1360 .id = 8,
1361 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1362 .resources = wm831x_ldo8_resources,
1363 },
1364 {
1365 .name = "wm831x-aldo",
1366 .id = 9,
1367 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1368 .resources = wm831x_ldo9_resources,
1369 },
1370 {
1371 .name = "wm831x-aldo",
1372 .id = 10,
1373 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1374 .resources = wm831x_ldo10_resources,
1375 },
1376 {
1377 .name = "wm831x-alive-ldo",
1378 .id = 11,
1379 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1380 .resources = wm831x_ldo11_resources,
1381 },
1382 {
1383 .name = "wm831x-on",
1384 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1385 .resources = wm831x_on_resources,
1386 },
1387 {
1388 .name = "wm831x-status",
1389 .id = 1,
1390 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1391 .resources = wm831x_status1_resources,
1392 },
1393 {
1394 .name = "wm831x-status",
1395 .id = 2,
1396 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1397 .resources = wm831x_status2_resources,
1398 },
1399 {
1400 .name = "wm831x-watchdog",
1401 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1402 .resources = wm831x_wdt_resources,
1403 },
1404 };
1405
1406 static const struct mfd_cell touch_devs[] = {
1407 {
1408 .name = "wm831x-touch",
1409 .num_resources = ARRAY_SIZE(wm831x_touch_resources),
1410 .resources = wm831x_touch_resources,
1411 },
1412 };
1413
1414 static const struct mfd_cell rtc_devs[] = {
1415 {
1416 .name = "wm831x-rtc",
1417 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1418 .resources = wm831x_rtc_resources,
1419 },
1420 };
1421
1422 static const struct mfd_cell backlight_devs[] = {
1423 {
1424 .name = "wm831x-backlight",
1425 },
1426 };
1427
1428 struct regmap_config wm831x_regmap_config = {
1429 .reg_bits = 16,
1430 .val_bits = 16,
1431
1432 .cache_type = REGCACHE_MAPLE,
1433
1434 .max_register = WM831X_DBE_CHECK_DATA,
1435 .readable_reg = wm831x_reg_readable,
1436 .writeable_reg = wm831x_reg_writeable,
1437 .volatile_reg = wm831x_reg_volatile,
1438 };
1439 EXPORT_SYMBOL_GPL(wm831x_regmap_config);
1440
1441 const struct of_device_id wm831x_of_match[] = {
1442 { .compatible = "wlf,wm8310", .data = (void *)WM8310 },
1443 { .compatible = "wlf,wm8311", .data = (void *)WM8311 },
1444 { .compatible = "wlf,wm8312", .data = (void *)WM8312 },
1445 { .compatible = "wlf,wm8320", .data = (void *)WM8320 },
1446 { .compatible = "wlf,wm8321", .data = (void *)WM8321 },
1447 { .compatible = "wlf,wm8325", .data = (void *)WM8325 },
1448 { .compatible = "wlf,wm8326", .data = (void *)WM8326 },
1449 { },
1450 };
1451 EXPORT_SYMBOL_GPL(wm831x_of_match);
1452
1453 /*
1454 * Instantiate the generic non-control parts of the device.
1455 */
wm831x_device_init(struct wm831x * wm831x,int irq)1456 int wm831x_device_init(struct wm831x *wm831x, int irq)
1457 {
1458 struct wm831x_pdata *pdata = &wm831x->pdata;
1459 int rev, wm831x_num;
1460 enum wm831x_parent parent;
1461 int ret, i;
1462
1463 mutex_init(&wm831x->io_lock);
1464 mutex_init(&wm831x->key_lock);
1465 dev_set_drvdata(wm831x->dev, wm831x);
1466
1467 wm831x->soft_shutdown = pdata->soft_shutdown;
1468
1469 ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
1470 if (ret < 0) {
1471 dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
1472 goto err;
1473 }
1474 switch (ret) {
1475 case 0x6204:
1476 case 0x6246:
1477 break;
1478 default:
1479 dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
1480 ret = -EINVAL;
1481 goto err;
1482 }
1483
1484 ret = wm831x_reg_read(wm831x, WM831X_REVISION);
1485 if (ret < 0) {
1486 dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
1487 goto err;
1488 }
1489 rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
1490
1491 ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
1492 if (ret < 0) {
1493 dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
1494 goto err;
1495 }
1496
1497 /* Some engineering samples do not have the ID set, rely on
1498 * the device being registered correctly.
1499 */
1500 if (ret == 0) {
1501 dev_info(wm831x->dev, "Device is an engineering sample\n");
1502 ret = wm831x->type;
1503 }
1504
1505 switch (ret) {
1506 case WM8310:
1507 parent = WM8310;
1508 wm831x->num_gpio = 16;
1509 wm831x->charger_irq_wake = 1;
1510 if (rev > 0) {
1511 wm831x->has_gpio_ena = 1;
1512 wm831x->has_cs_sts = 1;
1513 }
1514
1515 dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
1516 break;
1517
1518 case WM8311:
1519 parent = WM8311;
1520 wm831x->num_gpio = 16;
1521 wm831x->charger_irq_wake = 1;
1522 if (rev > 0) {
1523 wm831x->has_gpio_ena = 1;
1524 wm831x->has_cs_sts = 1;
1525 }
1526
1527 dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
1528 break;
1529
1530 case WM8312:
1531 parent = WM8312;
1532 wm831x->num_gpio = 16;
1533 wm831x->charger_irq_wake = 1;
1534 if (rev > 0) {
1535 wm831x->has_gpio_ena = 1;
1536 wm831x->has_cs_sts = 1;
1537 }
1538
1539 dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
1540 break;
1541
1542 case WM8320:
1543 parent = WM8320;
1544 wm831x->num_gpio = 12;
1545 dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
1546 break;
1547
1548 case WM8321:
1549 parent = WM8321;
1550 wm831x->num_gpio = 12;
1551 dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
1552 break;
1553
1554 case WM8325:
1555 parent = WM8325;
1556 wm831x->num_gpio = 12;
1557 dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
1558 break;
1559
1560 case WM8326:
1561 parent = WM8326;
1562 wm831x->num_gpio = 12;
1563 dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
1564 break;
1565
1566 default:
1567 dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
1568 ret = -EINVAL;
1569 goto err;
1570 }
1571
1572 /* This will need revisiting in future but is OK for all
1573 * current parts.
1574 */
1575 if (parent != wm831x->type)
1576 dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
1577 wm831x->type);
1578
1579 /* Bootstrap the user key */
1580 ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
1581 if (ret < 0) {
1582 dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
1583 goto err;
1584 }
1585 if (ret != 0) {
1586 dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
1587 ret);
1588 wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
1589 }
1590 wm831x->locked = 1;
1591
1592 if (pdata->pre_init) {
1593 ret = pdata->pre_init(wm831x);
1594 if (ret != 0) {
1595 dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
1596 goto err;
1597 }
1598 }
1599
1600 for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
1601 if (!pdata->gpio_defaults[i])
1602 continue;
1603
1604 wm831x_reg_write(wm831x,
1605 WM831X_GPIO1_CONTROL + i,
1606 pdata->gpio_defaults[i] & 0xffff);
1607 }
1608
1609 /* Multiply by 10 as we have many subdevices of the same type */
1610 if (pdata->wm831x_num)
1611 wm831x_num = pdata->wm831x_num * 10;
1612 else
1613 wm831x_num = -1;
1614
1615 ret = wm831x_irq_init(wm831x, irq);
1616 if (ret != 0)
1617 goto err;
1618
1619 wm831x_auxadc_init(wm831x);
1620
1621 /* The core device is up, instantiate the subdevices. */
1622 switch (parent) {
1623 case WM8310:
1624 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1625 wm8310_devs, ARRAY_SIZE(wm8310_devs),
1626 NULL, 0, NULL);
1627 break;
1628
1629 case WM8311:
1630 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1631 wm8311_devs, ARRAY_SIZE(wm8311_devs),
1632 NULL, 0, NULL);
1633 if (!pdata->disable_touch)
1634 mfd_add_devices(wm831x->dev, wm831x_num,
1635 touch_devs, ARRAY_SIZE(touch_devs),
1636 NULL, 0, NULL);
1637 break;
1638
1639 case WM8312:
1640 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1641 wm8312_devs, ARRAY_SIZE(wm8312_devs),
1642 NULL, 0, NULL);
1643 if (!pdata->disable_touch)
1644 mfd_add_devices(wm831x->dev, wm831x_num,
1645 touch_devs, ARRAY_SIZE(touch_devs),
1646 NULL, 0, NULL);
1647 break;
1648
1649 case WM8320:
1650 case WM8321:
1651 case WM8325:
1652 case WM8326:
1653 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1654 wm8320_devs, ARRAY_SIZE(wm8320_devs),
1655 NULL, 0, NULL);
1656 break;
1657
1658 default:
1659 /* If this happens the bus probe function is buggy */
1660 BUG();
1661 }
1662
1663 if (ret != 0) {
1664 dev_err(wm831x->dev, "Failed to add children\n");
1665 goto err_irq;
1666 }
1667
1668 /* The RTC can only be used if the 32.768kHz crystal is
1669 * enabled; this can't be controlled by software at runtime.
1670 */
1671 ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
1672 if (ret < 0) {
1673 dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
1674 goto err_irq;
1675 }
1676
1677 if (ret & WM831X_XTAL_ENA) {
1678 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1679 rtc_devs, ARRAY_SIZE(rtc_devs),
1680 NULL, 0, NULL);
1681 if (ret != 0) {
1682 dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
1683 goto err_irq;
1684 }
1685 } else {
1686 dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
1687 }
1688
1689 if (pdata->backlight) {
1690 /* Treat errors as non-critical */
1691 ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
1692 ARRAY_SIZE(backlight_devs), NULL,
1693 0, NULL);
1694 if (ret < 0)
1695 dev_err(wm831x->dev, "Failed to add backlight: %d\n",
1696 ret);
1697 }
1698
1699 wm831x_otp_init(wm831x);
1700
1701 if (pdata->post_init) {
1702 ret = pdata->post_init(wm831x);
1703 if (ret != 0) {
1704 dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
1705 goto err_irq;
1706 }
1707 }
1708
1709 return 0;
1710
1711 err_irq:
1712 wm831x_irq_exit(wm831x);
1713 err:
1714 mfd_remove_devices(wm831x->dev);
1715 return ret;
1716 }
1717
wm831x_device_suspend(struct wm831x * wm831x)1718 int wm831x_device_suspend(struct wm831x *wm831x)
1719 {
1720 int reg, mask;
1721
1722 /* If the charger IRQs are a wake source then make sure we ack
1723 * them even if they're not actively being used (eg, no power
1724 * driver or no IRQ line wired up) then acknowledge the
1725 * interrupts otherwise suspend won't last very long.
1726 */
1727 if (wm831x->charger_irq_wake) {
1728 reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
1729
1730 mask = WM831X_CHG_BATT_HOT_EINT |
1731 WM831X_CHG_BATT_COLD_EINT |
1732 WM831X_CHG_BATT_FAIL_EINT |
1733 WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
1734 WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
1735 WM831X_CHG_START_EINT;
1736
1737 /* If any of the interrupts are masked read the statuses */
1738 if (reg & mask)
1739 reg = wm831x_reg_read(wm831x,
1740 WM831X_INTERRUPT_STATUS_2);
1741
1742 if (reg & mask) {
1743 dev_info(wm831x->dev,
1744 "Acknowledging masked charger IRQs: %x\n",
1745 reg & mask);
1746 wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
1747 reg & mask);
1748 }
1749 }
1750
1751 return 0;
1752 }
1753
wm831x_device_shutdown(struct wm831x * wm831x)1754 void wm831x_device_shutdown(struct wm831x *wm831x)
1755 {
1756 if (wm831x->soft_shutdown) {
1757 dev_info(wm831x->dev, "Initiating shutdown...\n");
1758 wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
1759 }
1760 }
1761 EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
1762