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_unlock: 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 */
wm831x_reg_lock(struct wm831x * wm831x)118 void wm831x_reg_lock(struct wm831x *wm831x)
119 {
120 int ret;
121
122 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
123 if (ret == 0) {
124 dev_vdbg(wm831x->dev, "Registers locked\n");
125
126 mutex_lock(&wm831x->io_lock);
127 WARN_ON(wm831x->locked);
128 wm831x->locked = 1;
129 mutex_unlock(&wm831x->io_lock);
130 } else {
131 dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
132 }
133
134 }
135 EXPORT_SYMBOL_GPL(wm831x_reg_lock);
136
137 /**
138 * wm831x_reg_unlock: Unlock user keyed registers
139 *
140 * The WM831x has a user key preventing writes to particularly
141 * critical registers. This function locks those registers,
142 * preventing spurious writes.
143 */
wm831x_reg_unlock(struct wm831x * wm831x)144 int wm831x_reg_unlock(struct wm831x *wm831x)
145 {
146 int ret;
147
148 /* 0x9716 is the value required to unlock the registers */
149 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
150 if (ret == 0) {
151 dev_vdbg(wm831x->dev, "Registers unlocked\n");
152
153 mutex_lock(&wm831x->io_lock);
154 WARN_ON(!wm831x->locked);
155 wm831x->locked = 0;
156 mutex_unlock(&wm831x->io_lock);
157 }
158
159 return ret;
160 }
161 EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
162
wm831x_reg_readable(struct device * dev,unsigned int reg)163 static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
164 {
165 switch (reg) {
166 case WM831X_RESET_ID:
167 case WM831X_REVISION:
168 case WM831X_PARENT_ID:
169 case WM831X_SYSVDD_CONTROL:
170 case WM831X_THERMAL_MONITORING:
171 case WM831X_POWER_STATE:
172 case WM831X_WATCHDOG:
173 case WM831X_ON_PIN_CONTROL:
174 case WM831X_RESET_CONTROL:
175 case WM831X_CONTROL_INTERFACE:
176 case WM831X_SECURITY_KEY:
177 case WM831X_SOFTWARE_SCRATCH:
178 case WM831X_OTP_CONTROL:
179 case WM831X_GPIO_LEVEL:
180 case WM831X_SYSTEM_STATUS:
181 case WM831X_ON_SOURCE:
182 case WM831X_OFF_SOURCE:
183 case WM831X_SYSTEM_INTERRUPTS:
184 case WM831X_INTERRUPT_STATUS_1:
185 case WM831X_INTERRUPT_STATUS_2:
186 case WM831X_INTERRUPT_STATUS_3:
187 case WM831X_INTERRUPT_STATUS_4:
188 case WM831X_INTERRUPT_STATUS_5:
189 case WM831X_IRQ_CONFIG:
190 case WM831X_SYSTEM_INTERRUPTS_MASK:
191 case WM831X_INTERRUPT_STATUS_1_MASK:
192 case WM831X_INTERRUPT_STATUS_2_MASK:
193 case WM831X_INTERRUPT_STATUS_3_MASK:
194 case WM831X_INTERRUPT_STATUS_4_MASK:
195 case WM831X_INTERRUPT_STATUS_5_MASK:
196 case WM831X_RTC_WRITE_COUNTER:
197 case WM831X_RTC_TIME_1:
198 case WM831X_RTC_TIME_2:
199 case WM831X_RTC_ALARM_1:
200 case WM831X_RTC_ALARM_2:
201 case WM831X_RTC_CONTROL:
202 case WM831X_RTC_TRIM:
203 case WM831X_TOUCH_CONTROL_1:
204 case WM831X_TOUCH_CONTROL_2:
205 case WM831X_TOUCH_DATA_X:
206 case WM831X_TOUCH_DATA_Y:
207 case WM831X_TOUCH_DATA_Z:
208 case WM831X_AUXADC_DATA:
209 case WM831X_AUXADC_CONTROL:
210 case WM831X_AUXADC_SOURCE:
211 case WM831X_COMPARATOR_CONTROL:
212 case WM831X_COMPARATOR_1:
213 case WM831X_COMPARATOR_2:
214 case WM831X_COMPARATOR_3:
215 case WM831X_COMPARATOR_4:
216 case WM831X_GPIO1_CONTROL:
217 case WM831X_GPIO2_CONTROL:
218 case WM831X_GPIO3_CONTROL:
219 case WM831X_GPIO4_CONTROL:
220 case WM831X_GPIO5_CONTROL:
221 case WM831X_GPIO6_CONTROL:
222 case WM831X_GPIO7_CONTROL:
223 case WM831X_GPIO8_CONTROL:
224 case WM831X_GPIO9_CONTROL:
225 case WM831X_GPIO10_CONTROL:
226 case WM831X_GPIO11_CONTROL:
227 case WM831X_GPIO12_CONTROL:
228 case WM831X_GPIO13_CONTROL:
229 case WM831X_GPIO14_CONTROL:
230 case WM831X_GPIO15_CONTROL:
231 case WM831X_GPIO16_CONTROL:
232 case WM831X_CHARGER_CONTROL_1:
233 case WM831X_CHARGER_CONTROL_2:
234 case WM831X_CHARGER_STATUS:
235 case WM831X_BACKUP_CHARGER_CONTROL:
236 case WM831X_STATUS_LED_1:
237 case WM831X_STATUS_LED_2:
238 case WM831X_CURRENT_SINK_1:
239 case WM831X_CURRENT_SINK_2:
240 case WM831X_DCDC_ENABLE:
241 case WM831X_LDO_ENABLE:
242 case WM831X_DCDC_STATUS:
243 case WM831X_LDO_STATUS:
244 case WM831X_DCDC_UV_STATUS:
245 case WM831X_LDO_UV_STATUS:
246 case WM831X_DC1_CONTROL_1:
247 case WM831X_DC1_CONTROL_2:
248 case WM831X_DC1_ON_CONFIG:
249 case WM831X_DC1_SLEEP_CONTROL:
250 case WM831X_DC1_DVS_CONTROL:
251 case WM831X_DC2_CONTROL_1:
252 case WM831X_DC2_CONTROL_2:
253 case WM831X_DC2_ON_CONFIG:
254 case WM831X_DC2_SLEEP_CONTROL:
255 case WM831X_DC2_DVS_CONTROL:
256 case WM831X_DC3_CONTROL_1:
257 case WM831X_DC3_CONTROL_2:
258 case WM831X_DC3_ON_CONFIG:
259 case WM831X_DC3_SLEEP_CONTROL:
260 case WM831X_DC4_CONTROL:
261 case WM831X_DC4_SLEEP_CONTROL:
262 case WM831X_EPE1_CONTROL:
263 case WM831X_EPE2_CONTROL:
264 case WM831X_LDO1_CONTROL:
265 case WM831X_LDO1_ON_CONTROL:
266 case WM831X_LDO1_SLEEP_CONTROL:
267 case WM831X_LDO2_CONTROL:
268 case WM831X_LDO2_ON_CONTROL:
269 case WM831X_LDO2_SLEEP_CONTROL:
270 case WM831X_LDO3_CONTROL:
271 case WM831X_LDO3_ON_CONTROL:
272 case WM831X_LDO3_SLEEP_CONTROL:
273 case WM831X_LDO4_CONTROL:
274 case WM831X_LDO4_ON_CONTROL:
275 case WM831X_LDO4_SLEEP_CONTROL:
276 case WM831X_LDO5_CONTROL:
277 case WM831X_LDO5_ON_CONTROL:
278 case WM831X_LDO5_SLEEP_CONTROL:
279 case WM831X_LDO6_CONTROL:
280 case WM831X_LDO6_ON_CONTROL:
281 case WM831X_LDO6_SLEEP_CONTROL:
282 case WM831X_LDO7_CONTROL:
283 case WM831X_LDO7_ON_CONTROL:
284 case WM831X_LDO7_SLEEP_CONTROL:
285 case WM831X_LDO8_CONTROL:
286 case WM831X_LDO8_ON_CONTROL:
287 case WM831X_LDO8_SLEEP_CONTROL:
288 case WM831X_LDO9_CONTROL:
289 case WM831X_LDO9_ON_CONTROL:
290 case WM831X_LDO9_SLEEP_CONTROL:
291 case WM831X_LDO10_CONTROL:
292 case WM831X_LDO10_ON_CONTROL:
293 case WM831X_LDO10_SLEEP_CONTROL:
294 case WM831X_LDO11_ON_CONTROL:
295 case WM831X_LDO11_SLEEP_CONTROL:
296 case WM831X_POWER_GOOD_SOURCE_1:
297 case WM831X_POWER_GOOD_SOURCE_2:
298 case WM831X_CLOCK_CONTROL_1:
299 case WM831X_CLOCK_CONTROL_2:
300 case WM831X_FLL_CONTROL_1:
301 case WM831X_FLL_CONTROL_2:
302 case WM831X_FLL_CONTROL_3:
303 case WM831X_FLL_CONTROL_4:
304 case WM831X_FLL_CONTROL_5:
305 case WM831X_UNIQUE_ID_1:
306 case WM831X_UNIQUE_ID_2:
307 case WM831X_UNIQUE_ID_3:
308 case WM831X_UNIQUE_ID_4:
309 case WM831X_UNIQUE_ID_5:
310 case WM831X_UNIQUE_ID_6:
311 case WM831X_UNIQUE_ID_7:
312 case WM831X_UNIQUE_ID_8:
313 case WM831X_FACTORY_OTP_ID:
314 case WM831X_FACTORY_OTP_1:
315 case WM831X_FACTORY_OTP_2:
316 case WM831X_FACTORY_OTP_3:
317 case WM831X_FACTORY_OTP_4:
318 case WM831X_FACTORY_OTP_5:
319 case WM831X_CUSTOMER_OTP_ID:
320 case WM831X_DC1_OTP_CONTROL:
321 case WM831X_DC2_OTP_CONTROL:
322 case WM831X_DC3_OTP_CONTROL:
323 case WM831X_LDO1_2_OTP_CONTROL:
324 case WM831X_LDO3_4_OTP_CONTROL:
325 case WM831X_LDO5_6_OTP_CONTROL:
326 case WM831X_LDO7_8_OTP_CONTROL:
327 case WM831X_LDO9_10_OTP_CONTROL:
328 case WM831X_LDO11_EPE_CONTROL:
329 case WM831X_GPIO1_OTP_CONTROL:
330 case WM831X_GPIO2_OTP_CONTROL:
331 case WM831X_GPIO3_OTP_CONTROL:
332 case WM831X_GPIO4_OTP_CONTROL:
333 case WM831X_GPIO5_OTP_CONTROL:
334 case WM831X_GPIO6_OTP_CONTROL:
335 case WM831X_DBE_CHECK_DATA:
336 return true;
337 default:
338 return false;
339 }
340 }
341
wm831x_reg_writeable(struct device * dev,unsigned int reg)342 static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
343 {
344 struct wm831x *wm831x = dev_get_drvdata(dev);
345
346 if (wm831x_reg_locked(wm831x, reg))
347 return false;
348
349 switch (reg) {
350 case WM831X_SYSVDD_CONTROL:
351 case WM831X_THERMAL_MONITORING:
352 case WM831X_POWER_STATE:
353 case WM831X_WATCHDOG:
354 case WM831X_ON_PIN_CONTROL:
355 case WM831X_RESET_CONTROL:
356 case WM831X_CONTROL_INTERFACE:
357 case WM831X_SECURITY_KEY:
358 case WM831X_SOFTWARE_SCRATCH:
359 case WM831X_OTP_CONTROL:
360 case WM831X_GPIO_LEVEL:
361 case WM831X_INTERRUPT_STATUS_1:
362 case WM831X_INTERRUPT_STATUS_2:
363 case WM831X_INTERRUPT_STATUS_3:
364 case WM831X_INTERRUPT_STATUS_4:
365 case WM831X_INTERRUPT_STATUS_5:
366 case WM831X_IRQ_CONFIG:
367 case WM831X_SYSTEM_INTERRUPTS_MASK:
368 case WM831X_INTERRUPT_STATUS_1_MASK:
369 case WM831X_INTERRUPT_STATUS_2_MASK:
370 case WM831X_INTERRUPT_STATUS_3_MASK:
371 case WM831X_INTERRUPT_STATUS_4_MASK:
372 case WM831X_INTERRUPT_STATUS_5_MASK:
373 case WM831X_RTC_TIME_1:
374 case WM831X_RTC_TIME_2:
375 case WM831X_RTC_ALARM_1:
376 case WM831X_RTC_ALARM_2:
377 case WM831X_RTC_CONTROL:
378 case WM831X_RTC_TRIM:
379 case WM831X_TOUCH_CONTROL_1:
380 case WM831X_TOUCH_CONTROL_2:
381 case WM831X_AUXADC_CONTROL:
382 case WM831X_AUXADC_SOURCE:
383 case WM831X_COMPARATOR_CONTROL:
384 case WM831X_COMPARATOR_1:
385 case WM831X_COMPARATOR_2:
386 case WM831X_COMPARATOR_3:
387 case WM831X_COMPARATOR_4:
388 case WM831X_GPIO1_CONTROL:
389 case WM831X_GPIO2_CONTROL:
390 case WM831X_GPIO3_CONTROL:
391 case WM831X_GPIO4_CONTROL:
392 case WM831X_GPIO5_CONTROL:
393 case WM831X_GPIO6_CONTROL:
394 case WM831X_GPIO7_CONTROL:
395 case WM831X_GPIO8_CONTROL:
396 case WM831X_GPIO9_CONTROL:
397 case WM831X_GPIO10_CONTROL:
398 case WM831X_GPIO11_CONTROL:
399 case WM831X_GPIO12_CONTROL:
400 case WM831X_GPIO13_CONTROL:
401 case WM831X_GPIO14_CONTROL:
402 case WM831X_GPIO15_CONTROL:
403 case WM831X_GPIO16_CONTROL:
404 case WM831X_CHARGER_CONTROL_1:
405 case WM831X_CHARGER_CONTROL_2:
406 case WM831X_CHARGER_STATUS:
407 case WM831X_BACKUP_CHARGER_CONTROL:
408 case WM831X_STATUS_LED_1:
409 case WM831X_STATUS_LED_2:
410 case WM831X_CURRENT_SINK_1:
411 case WM831X_CURRENT_SINK_2:
412 case WM831X_DCDC_ENABLE:
413 case WM831X_LDO_ENABLE:
414 case WM831X_DC1_CONTROL_1:
415 case WM831X_DC1_CONTROL_2:
416 case WM831X_DC1_ON_CONFIG:
417 case WM831X_DC1_SLEEP_CONTROL:
418 case WM831X_DC1_DVS_CONTROL:
419 case WM831X_DC2_CONTROL_1:
420 case WM831X_DC2_CONTROL_2:
421 case WM831X_DC2_ON_CONFIG:
422 case WM831X_DC2_SLEEP_CONTROL:
423 case WM831X_DC2_DVS_CONTROL:
424 case WM831X_DC3_CONTROL_1:
425 case WM831X_DC3_CONTROL_2:
426 case WM831X_DC3_ON_CONFIG:
427 case WM831X_DC3_SLEEP_CONTROL:
428 case WM831X_DC4_CONTROL:
429 case WM831X_DC4_SLEEP_CONTROL:
430 case WM831X_EPE1_CONTROL:
431 case WM831X_EPE2_CONTROL:
432 case WM831X_LDO1_CONTROL:
433 case WM831X_LDO1_ON_CONTROL:
434 case WM831X_LDO1_SLEEP_CONTROL:
435 case WM831X_LDO2_CONTROL:
436 case WM831X_LDO2_ON_CONTROL:
437 case WM831X_LDO2_SLEEP_CONTROL:
438 case WM831X_LDO3_CONTROL:
439 case WM831X_LDO3_ON_CONTROL:
440 case WM831X_LDO3_SLEEP_CONTROL:
441 case WM831X_LDO4_CONTROL:
442 case WM831X_LDO4_ON_CONTROL:
443 case WM831X_LDO4_SLEEP_CONTROL:
444 case WM831X_LDO5_CONTROL:
445 case WM831X_LDO5_ON_CONTROL:
446 case WM831X_LDO5_SLEEP_CONTROL:
447 case WM831X_LDO6_CONTROL:
448 case WM831X_LDO6_ON_CONTROL:
449 case WM831X_LDO6_SLEEP_CONTROL:
450 case WM831X_LDO7_CONTROL:
451 case WM831X_LDO7_ON_CONTROL:
452 case WM831X_LDO7_SLEEP_CONTROL:
453 case WM831X_LDO8_CONTROL:
454 case WM831X_LDO8_ON_CONTROL:
455 case WM831X_LDO8_SLEEP_CONTROL:
456 case WM831X_LDO9_CONTROL:
457 case WM831X_LDO9_ON_CONTROL:
458 case WM831X_LDO9_SLEEP_CONTROL:
459 case WM831X_LDO10_CONTROL:
460 case WM831X_LDO10_ON_CONTROL:
461 case WM831X_LDO10_SLEEP_CONTROL:
462 case WM831X_LDO11_ON_CONTROL:
463 case WM831X_LDO11_SLEEP_CONTROL:
464 case WM831X_POWER_GOOD_SOURCE_1:
465 case WM831X_POWER_GOOD_SOURCE_2:
466 case WM831X_CLOCK_CONTROL_1:
467 case WM831X_CLOCK_CONTROL_2:
468 case WM831X_FLL_CONTROL_1:
469 case WM831X_FLL_CONTROL_2:
470 case WM831X_FLL_CONTROL_3:
471 case WM831X_FLL_CONTROL_4:
472 case WM831X_FLL_CONTROL_5:
473 return true;
474 default:
475 return false;
476 }
477 }
478
wm831x_reg_volatile(struct device * dev,unsigned int reg)479 static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
480 {
481 switch (reg) {
482 case WM831X_SYSTEM_STATUS:
483 case WM831X_ON_SOURCE:
484 case WM831X_OFF_SOURCE:
485 case WM831X_GPIO_LEVEL:
486 case WM831X_SYSTEM_INTERRUPTS:
487 case WM831X_INTERRUPT_STATUS_1:
488 case WM831X_INTERRUPT_STATUS_2:
489 case WM831X_INTERRUPT_STATUS_3:
490 case WM831X_INTERRUPT_STATUS_4:
491 case WM831X_INTERRUPT_STATUS_5:
492 case WM831X_RTC_TIME_1:
493 case WM831X_RTC_TIME_2:
494 case WM831X_TOUCH_DATA_X:
495 case WM831X_TOUCH_DATA_Y:
496 case WM831X_TOUCH_DATA_Z:
497 case WM831X_AUXADC_DATA:
498 case WM831X_CHARGER_STATUS:
499 case WM831X_DCDC_STATUS:
500 case WM831X_LDO_STATUS:
501 case WM831X_DCDC_UV_STATUS:
502 case WM831X_LDO_UV_STATUS:
503 return true;
504 default:
505 return false;
506 }
507 }
508
509 /**
510 * wm831x_reg_read: Read a single WM831x register.
511 *
512 * @wm831x: Device to read from.
513 * @reg: Register to read.
514 */
wm831x_reg_read(struct wm831x * wm831x,unsigned short reg)515 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
516 {
517 unsigned int val;
518 int ret;
519
520 ret = regmap_read(wm831x->regmap, reg, &val);
521
522 if (ret < 0)
523 return ret;
524 else
525 return val;
526 }
527 EXPORT_SYMBOL_GPL(wm831x_reg_read);
528
529 /**
530 * wm831x_bulk_read: Read multiple WM831x registers
531 *
532 * @wm831x: Device to read from
533 * @reg: First register
534 * @count: Number of registers
535 * @buf: Buffer to fill.
536 */
wm831x_bulk_read(struct wm831x * wm831x,unsigned short reg,int count,u16 * buf)537 int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
538 int count, u16 *buf)
539 {
540 return regmap_bulk_read(wm831x->regmap, reg, buf, count);
541 }
542 EXPORT_SYMBOL_GPL(wm831x_bulk_read);
543
wm831x_write(struct wm831x * wm831x,unsigned short reg,int bytes,void * src)544 static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
545 int bytes, void *src)
546 {
547 u16 *buf = src;
548 int i, ret;
549
550 BUG_ON(bytes % 2);
551 BUG_ON(bytes <= 0);
552
553 for (i = 0; i < bytes / 2; i++) {
554 if (wm831x_reg_locked(wm831x, reg))
555 return -EPERM;
556
557 dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
558 buf[i], reg + i, reg + i);
559 ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
560 if (ret != 0)
561 return ret;
562 }
563
564 return 0;
565 }
566
567 /**
568 * wm831x_reg_write: Write a single WM831x register.
569 *
570 * @wm831x: Device to write to.
571 * @reg: Register to write to.
572 * @val: Value to write.
573 */
wm831x_reg_write(struct wm831x * wm831x,unsigned short reg,unsigned short val)574 int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
575 unsigned short val)
576 {
577 int ret;
578
579 mutex_lock(&wm831x->io_lock);
580
581 ret = wm831x_write(wm831x, reg, 2, &val);
582
583 mutex_unlock(&wm831x->io_lock);
584
585 return ret;
586 }
587 EXPORT_SYMBOL_GPL(wm831x_reg_write);
588
589 /**
590 * wm831x_set_bits: Set the value of a bitfield in a WM831x register
591 *
592 * @wm831x: Device to write to.
593 * @reg: Register to write to.
594 * @mask: Mask of bits to set.
595 * @val: Value to set (unshifted)
596 */
wm831x_set_bits(struct wm831x * wm831x,unsigned short reg,unsigned short mask,unsigned short val)597 int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
598 unsigned short mask, unsigned short val)
599 {
600 int ret;
601
602 mutex_lock(&wm831x->io_lock);
603
604 if (!wm831x_reg_locked(wm831x, reg))
605 ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
606 else
607 ret = -EPERM;
608
609 mutex_unlock(&wm831x->io_lock);
610
611 return ret;
612 }
613 EXPORT_SYMBOL_GPL(wm831x_set_bits);
614
615 static struct resource wm831x_dcdc1_resources[] = {
616 {
617 .start = WM831X_DC1_CONTROL_1,
618 .end = WM831X_DC1_DVS_CONTROL,
619 .flags = IORESOURCE_REG,
620 },
621 {
622 .name = "UV",
623 .start = WM831X_IRQ_UV_DC1,
624 .end = WM831X_IRQ_UV_DC1,
625 .flags = IORESOURCE_IRQ,
626 },
627 {
628 .name = "HC",
629 .start = WM831X_IRQ_HC_DC1,
630 .end = WM831X_IRQ_HC_DC1,
631 .flags = IORESOURCE_IRQ,
632 },
633 };
634
635
636 static struct resource wm831x_dcdc2_resources[] = {
637 {
638 .start = WM831X_DC2_CONTROL_1,
639 .end = WM831X_DC2_DVS_CONTROL,
640 .flags = IORESOURCE_REG,
641 },
642 {
643 .name = "UV",
644 .start = WM831X_IRQ_UV_DC2,
645 .end = WM831X_IRQ_UV_DC2,
646 .flags = IORESOURCE_IRQ,
647 },
648 {
649 .name = "HC",
650 .start = WM831X_IRQ_HC_DC2,
651 .end = WM831X_IRQ_HC_DC2,
652 .flags = IORESOURCE_IRQ,
653 },
654 };
655
656 static struct resource wm831x_dcdc3_resources[] = {
657 {
658 .start = WM831X_DC3_CONTROL_1,
659 .end = WM831X_DC3_SLEEP_CONTROL,
660 .flags = IORESOURCE_REG,
661 },
662 {
663 .name = "UV",
664 .start = WM831X_IRQ_UV_DC3,
665 .end = WM831X_IRQ_UV_DC3,
666 .flags = IORESOURCE_IRQ,
667 },
668 };
669
670 static struct resource wm831x_dcdc4_resources[] = {
671 {
672 .start = WM831X_DC4_CONTROL,
673 .end = WM831X_DC4_SLEEP_CONTROL,
674 .flags = IORESOURCE_REG,
675 },
676 {
677 .name = "UV",
678 .start = WM831X_IRQ_UV_DC4,
679 .end = WM831X_IRQ_UV_DC4,
680 .flags = IORESOURCE_IRQ,
681 },
682 };
683
684 static struct resource wm8320_dcdc4_buck_resources[] = {
685 {
686 .start = WM831X_DC4_CONTROL,
687 .end = WM832X_DC4_SLEEP_CONTROL,
688 .flags = IORESOURCE_REG,
689 },
690 {
691 .name = "UV",
692 .start = WM831X_IRQ_UV_DC4,
693 .end = WM831X_IRQ_UV_DC4,
694 .flags = IORESOURCE_IRQ,
695 },
696 };
697
698 static struct resource wm831x_gpio_resources[] = {
699 {
700 .start = WM831X_IRQ_GPIO_1,
701 .end = WM831X_IRQ_GPIO_16,
702 .flags = IORESOURCE_IRQ,
703 },
704 };
705
706 static struct resource wm831x_isink1_resources[] = {
707 {
708 .start = WM831X_CURRENT_SINK_1,
709 .end = WM831X_CURRENT_SINK_1,
710 .flags = IORESOURCE_REG,
711 },
712 {
713 .start = WM831X_IRQ_CS1,
714 .end = WM831X_IRQ_CS1,
715 .flags = IORESOURCE_IRQ,
716 },
717 };
718
719 static struct resource wm831x_isink2_resources[] = {
720 {
721 .start = WM831X_CURRENT_SINK_2,
722 .end = WM831X_CURRENT_SINK_2,
723 .flags = IORESOURCE_REG,
724 },
725 {
726 .start = WM831X_IRQ_CS2,
727 .end = WM831X_IRQ_CS2,
728 .flags = IORESOURCE_IRQ,
729 },
730 };
731
732 static struct resource wm831x_ldo1_resources[] = {
733 {
734 .start = WM831X_LDO1_CONTROL,
735 .end = WM831X_LDO1_SLEEP_CONTROL,
736 .flags = IORESOURCE_REG,
737 },
738 {
739 .name = "UV",
740 .start = WM831X_IRQ_UV_LDO1,
741 .end = WM831X_IRQ_UV_LDO1,
742 .flags = IORESOURCE_IRQ,
743 },
744 };
745
746 static struct resource wm831x_ldo2_resources[] = {
747 {
748 .start = WM831X_LDO2_CONTROL,
749 .end = WM831X_LDO2_SLEEP_CONTROL,
750 .flags = IORESOURCE_REG,
751 },
752 {
753 .name = "UV",
754 .start = WM831X_IRQ_UV_LDO2,
755 .end = WM831X_IRQ_UV_LDO2,
756 .flags = IORESOURCE_IRQ,
757 },
758 };
759
760 static struct resource wm831x_ldo3_resources[] = {
761 {
762 .start = WM831X_LDO3_CONTROL,
763 .end = WM831X_LDO3_SLEEP_CONTROL,
764 .flags = IORESOURCE_REG,
765 },
766 {
767 .name = "UV",
768 .start = WM831X_IRQ_UV_LDO3,
769 .end = WM831X_IRQ_UV_LDO3,
770 .flags = IORESOURCE_IRQ,
771 },
772 };
773
774 static struct resource wm831x_ldo4_resources[] = {
775 {
776 .start = WM831X_LDO4_CONTROL,
777 .end = WM831X_LDO4_SLEEP_CONTROL,
778 .flags = IORESOURCE_REG,
779 },
780 {
781 .name = "UV",
782 .start = WM831X_IRQ_UV_LDO4,
783 .end = WM831X_IRQ_UV_LDO4,
784 .flags = IORESOURCE_IRQ,
785 },
786 };
787
788 static struct resource wm831x_ldo5_resources[] = {
789 {
790 .start = WM831X_LDO5_CONTROL,
791 .end = WM831X_LDO5_SLEEP_CONTROL,
792 .flags = IORESOURCE_REG,
793 },
794 {
795 .name = "UV",
796 .start = WM831X_IRQ_UV_LDO5,
797 .end = WM831X_IRQ_UV_LDO5,
798 .flags = IORESOURCE_IRQ,
799 },
800 };
801
802 static struct resource wm831x_ldo6_resources[] = {
803 {
804 .start = WM831X_LDO6_CONTROL,
805 .end = WM831X_LDO6_SLEEP_CONTROL,
806 .flags = IORESOURCE_REG,
807 },
808 {
809 .name = "UV",
810 .start = WM831X_IRQ_UV_LDO6,
811 .end = WM831X_IRQ_UV_LDO6,
812 .flags = IORESOURCE_IRQ,
813 },
814 };
815
816 static struct resource wm831x_ldo7_resources[] = {
817 {
818 .start = WM831X_LDO7_CONTROL,
819 .end = WM831X_LDO7_SLEEP_CONTROL,
820 .flags = IORESOURCE_REG,
821 },
822 {
823 .name = "UV",
824 .start = WM831X_IRQ_UV_LDO7,
825 .end = WM831X_IRQ_UV_LDO7,
826 .flags = IORESOURCE_IRQ,
827 },
828 };
829
830 static struct resource wm831x_ldo8_resources[] = {
831 {
832 .start = WM831X_LDO8_CONTROL,
833 .end = WM831X_LDO8_SLEEP_CONTROL,
834 .flags = IORESOURCE_REG,
835 },
836 {
837 .name = "UV",
838 .start = WM831X_IRQ_UV_LDO8,
839 .end = WM831X_IRQ_UV_LDO8,
840 .flags = IORESOURCE_IRQ,
841 },
842 };
843
844 static struct resource wm831x_ldo9_resources[] = {
845 {
846 .start = WM831X_LDO9_CONTROL,
847 .end = WM831X_LDO9_SLEEP_CONTROL,
848 .flags = IORESOURCE_REG,
849 },
850 {
851 .name = "UV",
852 .start = WM831X_IRQ_UV_LDO9,
853 .end = WM831X_IRQ_UV_LDO9,
854 .flags = IORESOURCE_IRQ,
855 },
856 };
857
858 static struct resource wm831x_ldo10_resources[] = {
859 {
860 .start = WM831X_LDO10_CONTROL,
861 .end = WM831X_LDO10_SLEEP_CONTROL,
862 .flags = IORESOURCE_REG,
863 },
864 {
865 .name = "UV",
866 .start = WM831X_IRQ_UV_LDO10,
867 .end = WM831X_IRQ_UV_LDO10,
868 .flags = IORESOURCE_IRQ,
869 },
870 };
871
872 static struct resource wm831x_ldo11_resources[] = {
873 {
874 .start = WM831X_LDO11_ON_CONTROL,
875 .end = WM831X_LDO11_SLEEP_CONTROL,
876 .flags = IORESOURCE_REG,
877 },
878 };
879
880 static struct resource wm831x_on_resources[] = {
881 {
882 .start = WM831X_IRQ_ON,
883 .end = WM831X_IRQ_ON,
884 .flags = IORESOURCE_IRQ,
885 },
886 };
887
888
889 static struct resource wm831x_power_resources[] = {
890 {
891 .name = "SYSLO",
892 .start = WM831X_IRQ_PPM_SYSLO,
893 .end = WM831X_IRQ_PPM_SYSLO,
894 .flags = IORESOURCE_IRQ,
895 },
896 {
897 .name = "PWR SRC",
898 .start = WM831X_IRQ_PPM_PWR_SRC,
899 .end = WM831X_IRQ_PPM_PWR_SRC,
900 .flags = IORESOURCE_IRQ,
901 },
902 {
903 .name = "USB CURR",
904 .start = WM831X_IRQ_PPM_USB_CURR,
905 .end = WM831X_IRQ_PPM_USB_CURR,
906 .flags = IORESOURCE_IRQ,
907 },
908 {
909 .name = "BATT HOT",
910 .start = WM831X_IRQ_CHG_BATT_HOT,
911 .end = WM831X_IRQ_CHG_BATT_HOT,
912 .flags = IORESOURCE_IRQ,
913 },
914 {
915 .name = "BATT COLD",
916 .start = WM831X_IRQ_CHG_BATT_COLD,
917 .end = WM831X_IRQ_CHG_BATT_COLD,
918 .flags = IORESOURCE_IRQ,
919 },
920 {
921 .name = "BATT FAIL",
922 .start = WM831X_IRQ_CHG_BATT_FAIL,
923 .end = WM831X_IRQ_CHG_BATT_FAIL,
924 .flags = IORESOURCE_IRQ,
925 },
926 {
927 .name = "OV",
928 .start = WM831X_IRQ_CHG_OV,
929 .end = WM831X_IRQ_CHG_OV,
930 .flags = IORESOURCE_IRQ,
931 },
932 {
933 .name = "END",
934 .start = WM831X_IRQ_CHG_END,
935 .end = WM831X_IRQ_CHG_END,
936 .flags = IORESOURCE_IRQ,
937 },
938 {
939 .name = "TO",
940 .start = WM831X_IRQ_CHG_TO,
941 .end = WM831X_IRQ_CHG_TO,
942 .flags = IORESOURCE_IRQ,
943 },
944 {
945 .name = "MODE",
946 .start = WM831X_IRQ_CHG_MODE,
947 .end = WM831X_IRQ_CHG_MODE,
948 .flags = IORESOURCE_IRQ,
949 },
950 {
951 .name = "START",
952 .start = WM831X_IRQ_CHG_START,
953 .end = WM831X_IRQ_CHG_START,
954 .flags = IORESOURCE_IRQ,
955 },
956 };
957
958 static struct resource wm831x_rtc_resources[] = {
959 {
960 .name = "PER",
961 .start = WM831X_IRQ_RTC_PER,
962 .end = WM831X_IRQ_RTC_PER,
963 .flags = IORESOURCE_IRQ,
964 },
965 {
966 .name = "ALM",
967 .start = WM831X_IRQ_RTC_ALM,
968 .end = WM831X_IRQ_RTC_ALM,
969 .flags = IORESOURCE_IRQ,
970 },
971 };
972
973 static struct resource wm831x_status1_resources[] = {
974 {
975 .start = WM831X_STATUS_LED_1,
976 .end = WM831X_STATUS_LED_1,
977 .flags = IORESOURCE_REG,
978 },
979 };
980
981 static struct resource wm831x_status2_resources[] = {
982 {
983 .start = WM831X_STATUS_LED_2,
984 .end = WM831X_STATUS_LED_2,
985 .flags = IORESOURCE_REG,
986 },
987 };
988
989 static struct resource wm831x_touch_resources[] = {
990 {
991 .name = "TCHPD",
992 .start = WM831X_IRQ_TCHPD,
993 .end = WM831X_IRQ_TCHPD,
994 .flags = IORESOURCE_IRQ,
995 },
996 {
997 .name = "TCHDATA",
998 .start = WM831X_IRQ_TCHDATA,
999 .end = WM831X_IRQ_TCHDATA,
1000 .flags = IORESOURCE_IRQ,
1001 },
1002 };
1003
1004 static struct resource wm831x_wdt_resources[] = {
1005 {
1006 .start = WM831X_IRQ_WDOG_TO,
1007 .end = WM831X_IRQ_WDOG_TO,
1008 .flags = IORESOURCE_IRQ,
1009 },
1010 };
1011
1012 static const struct mfd_cell wm8310_devs[] = {
1013 {
1014 .name = "wm831x-backup",
1015 },
1016 {
1017 .name = "wm831x-buckv",
1018 .id = 1,
1019 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1020 .resources = wm831x_dcdc1_resources,
1021 },
1022 {
1023 .name = "wm831x-buckv",
1024 .id = 2,
1025 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1026 .resources = wm831x_dcdc2_resources,
1027 },
1028 {
1029 .name = "wm831x-buckp",
1030 .id = 3,
1031 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1032 .resources = wm831x_dcdc3_resources,
1033 },
1034 {
1035 .name = "wm831x-boostp",
1036 .id = 4,
1037 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1038 .resources = wm831x_dcdc4_resources,
1039 },
1040 {
1041 .name = "wm831x-clk",
1042 },
1043 {
1044 .name = "wm831x-epe",
1045 .id = 1,
1046 },
1047 {
1048 .name = "wm831x-epe",
1049 .id = 2,
1050 },
1051 {
1052 .name = "wm831x-gpio",
1053 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1054 .resources = wm831x_gpio_resources,
1055 },
1056 {
1057 .name = "wm831x-hwmon",
1058 },
1059 {
1060 .name = "wm831x-isink",
1061 .id = 1,
1062 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1063 .resources = wm831x_isink1_resources,
1064 },
1065 {
1066 .name = "wm831x-isink",
1067 .id = 2,
1068 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1069 .resources = wm831x_isink2_resources,
1070 },
1071 {
1072 .name = "wm831x-ldo",
1073 .id = 1,
1074 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1075 .resources = wm831x_ldo1_resources,
1076 },
1077 {
1078 .name = "wm831x-ldo",
1079 .id = 2,
1080 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1081 .resources = wm831x_ldo2_resources,
1082 },
1083 {
1084 .name = "wm831x-ldo",
1085 .id = 3,
1086 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1087 .resources = wm831x_ldo3_resources,
1088 },
1089 {
1090 .name = "wm831x-ldo",
1091 .id = 4,
1092 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1093 .resources = wm831x_ldo4_resources,
1094 },
1095 {
1096 .name = "wm831x-ldo",
1097 .id = 5,
1098 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1099 .resources = wm831x_ldo5_resources,
1100 },
1101 {
1102 .name = "wm831x-ldo",
1103 .id = 6,
1104 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1105 .resources = wm831x_ldo6_resources,
1106 },
1107 {
1108 .name = "wm831x-aldo",
1109 .id = 7,
1110 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1111 .resources = wm831x_ldo7_resources,
1112 },
1113 {
1114 .name = "wm831x-aldo",
1115 .id = 8,
1116 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1117 .resources = wm831x_ldo8_resources,
1118 },
1119 {
1120 .name = "wm831x-aldo",
1121 .id = 9,
1122 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1123 .resources = wm831x_ldo9_resources,
1124 },
1125 {
1126 .name = "wm831x-aldo",
1127 .id = 10,
1128 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1129 .resources = wm831x_ldo10_resources,
1130 },
1131 {
1132 .name = "wm831x-alive-ldo",
1133 .id = 11,
1134 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1135 .resources = wm831x_ldo11_resources,
1136 },
1137 {
1138 .name = "wm831x-on",
1139 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1140 .resources = wm831x_on_resources,
1141 },
1142 {
1143 .name = "wm831x-power",
1144 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1145 .resources = wm831x_power_resources,
1146 },
1147 {
1148 .name = "wm831x-status",
1149 .id = 1,
1150 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1151 .resources = wm831x_status1_resources,
1152 },
1153 {
1154 .name = "wm831x-status",
1155 .id = 2,
1156 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1157 .resources = wm831x_status2_resources,
1158 },
1159 {
1160 .name = "wm831x-watchdog",
1161 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1162 .resources = wm831x_wdt_resources,
1163 },
1164 };
1165
1166 static const struct mfd_cell wm8311_devs[] = {
1167 {
1168 .name = "wm831x-backup",
1169 },
1170 {
1171 .name = "wm831x-buckv",
1172 .id = 1,
1173 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1174 .resources = wm831x_dcdc1_resources,
1175 },
1176 {
1177 .name = "wm831x-buckv",
1178 .id = 2,
1179 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1180 .resources = wm831x_dcdc2_resources,
1181 },
1182 {
1183 .name = "wm831x-buckp",
1184 .id = 3,
1185 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1186 .resources = wm831x_dcdc3_resources,
1187 },
1188 {
1189 .name = "wm831x-boostp",
1190 .id = 4,
1191 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1192 .resources = wm831x_dcdc4_resources,
1193 },
1194 {
1195 .name = "wm831x-clk",
1196 },
1197 {
1198 .name = "wm831x-epe",
1199 .id = 1,
1200 },
1201 {
1202 .name = "wm831x-epe",
1203 .id = 2,
1204 },
1205 {
1206 .name = "wm831x-gpio",
1207 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1208 .resources = wm831x_gpio_resources,
1209 },
1210 {
1211 .name = "wm831x-hwmon",
1212 },
1213 {
1214 .name = "wm831x-isink",
1215 .id = 1,
1216 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1217 .resources = wm831x_isink1_resources,
1218 },
1219 {
1220 .name = "wm831x-isink",
1221 .id = 2,
1222 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1223 .resources = wm831x_isink2_resources,
1224 },
1225 {
1226 .name = "wm831x-ldo",
1227 .id = 1,
1228 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1229 .resources = wm831x_ldo1_resources,
1230 },
1231 {
1232 .name = "wm831x-ldo",
1233 .id = 2,
1234 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1235 .resources = wm831x_ldo2_resources,
1236 },
1237 {
1238 .name = "wm831x-ldo",
1239 .id = 3,
1240 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1241 .resources = wm831x_ldo3_resources,
1242 },
1243 {
1244 .name = "wm831x-ldo",
1245 .id = 4,
1246 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1247 .resources = wm831x_ldo4_resources,
1248 },
1249 {
1250 .name = "wm831x-ldo",
1251 .id = 5,
1252 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1253 .resources = wm831x_ldo5_resources,
1254 },
1255 {
1256 .name = "wm831x-aldo",
1257 .id = 7,
1258 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1259 .resources = wm831x_ldo7_resources,
1260 },
1261 {
1262 .name = "wm831x-alive-ldo",
1263 .id = 11,
1264 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1265 .resources = wm831x_ldo11_resources,
1266 },
1267 {
1268 .name = "wm831x-on",
1269 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1270 .resources = wm831x_on_resources,
1271 },
1272 {
1273 .name = "wm831x-power",
1274 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1275 .resources = wm831x_power_resources,
1276 },
1277 {
1278 .name = "wm831x-status",
1279 .id = 1,
1280 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1281 .resources = wm831x_status1_resources,
1282 },
1283 {
1284 .name = "wm831x-status",
1285 .id = 2,
1286 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1287 .resources = wm831x_status2_resources,
1288 },
1289 {
1290 .name = "wm831x-watchdog",
1291 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1292 .resources = wm831x_wdt_resources,
1293 },
1294 };
1295
1296 static const struct mfd_cell wm8312_devs[] = {
1297 {
1298 .name = "wm831x-backup",
1299 },
1300 {
1301 .name = "wm831x-buckv",
1302 .id = 1,
1303 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1304 .resources = wm831x_dcdc1_resources,
1305 },
1306 {
1307 .name = "wm831x-buckv",
1308 .id = 2,
1309 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1310 .resources = wm831x_dcdc2_resources,
1311 },
1312 {
1313 .name = "wm831x-buckp",
1314 .id = 3,
1315 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1316 .resources = wm831x_dcdc3_resources,
1317 },
1318 {
1319 .name = "wm831x-boostp",
1320 .id = 4,
1321 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1322 .resources = wm831x_dcdc4_resources,
1323 },
1324 {
1325 .name = "wm831x-clk",
1326 },
1327 {
1328 .name = "wm831x-epe",
1329 .id = 1,
1330 },
1331 {
1332 .name = "wm831x-epe",
1333 .id = 2,
1334 },
1335 {
1336 .name = "wm831x-gpio",
1337 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1338 .resources = wm831x_gpio_resources,
1339 },
1340 {
1341 .name = "wm831x-hwmon",
1342 },
1343 {
1344 .name = "wm831x-isink",
1345 .id = 1,
1346 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1347 .resources = wm831x_isink1_resources,
1348 },
1349 {
1350 .name = "wm831x-isink",
1351 .id = 2,
1352 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1353 .resources = wm831x_isink2_resources,
1354 },
1355 {
1356 .name = "wm831x-ldo",
1357 .id = 1,
1358 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1359 .resources = wm831x_ldo1_resources,
1360 },
1361 {
1362 .name = "wm831x-ldo",
1363 .id = 2,
1364 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1365 .resources = wm831x_ldo2_resources,
1366 },
1367 {
1368 .name = "wm831x-ldo",
1369 .id = 3,
1370 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1371 .resources = wm831x_ldo3_resources,
1372 },
1373 {
1374 .name = "wm831x-ldo",
1375 .id = 4,
1376 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1377 .resources = wm831x_ldo4_resources,
1378 },
1379 {
1380 .name = "wm831x-ldo",
1381 .id = 5,
1382 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1383 .resources = wm831x_ldo5_resources,
1384 },
1385 {
1386 .name = "wm831x-ldo",
1387 .id = 6,
1388 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1389 .resources = wm831x_ldo6_resources,
1390 },
1391 {
1392 .name = "wm831x-aldo",
1393 .id = 7,
1394 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1395 .resources = wm831x_ldo7_resources,
1396 },
1397 {
1398 .name = "wm831x-aldo",
1399 .id = 8,
1400 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1401 .resources = wm831x_ldo8_resources,
1402 },
1403 {
1404 .name = "wm831x-aldo",
1405 .id = 9,
1406 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1407 .resources = wm831x_ldo9_resources,
1408 },
1409 {
1410 .name = "wm831x-aldo",
1411 .id = 10,
1412 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1413 .resources = wm831x_ldo10_resources,
1414 },
1415 {
1416 .name = "wm831x-alive-ldo",
1417 .id = 11,
1418 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1419 .resources = wm831x_ldo11_resources,
1420 },
1421 {
1422 .name = "wm831x-on",
1423 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1424 .resources = wm831x_on_resources,
1425 },
1426 {
1427 .name = "wm831x-power",
1428 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1429 .resources = wm831x_power_resources,
1430 },
1431 {
1432 .name = "wm831x-status",
1433 .id = 1,
1434 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1435 .resources = wm831x_status1_resources,
1436 },
1437 {
1438 .name = "wm831x-status",
1439 .id = 2,
1440 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1441 .resources = wm831x_status2_resources,
1442 },
1443 {
1444 .name = "wm831x-watchdog",
1445 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1446 .resources = wm831x_wdt_resources,
1447 },
1448 };
1449
1450 static const struct mfd_cell wm8320_devs[] = {
1451 {
1452 .name = "wm831x-backup",
1453 },
1454 {
1455 .name = "wm831x-buckv",
1456 .id = 1,
1457 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1458 .resources = wm831x_dcdc1_resources,
1459 },
1460 {
1461 .name = "wm831x-buckv",
1462 .id = 2,
1463 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1464 .resources = wm831x_dcdc2_resources,
1465 },
1466 {
1467 .name = "wm831x-buckp",
1468 .id = 3,
1469 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1470 .resources = wm831x_dcdc3_resources,
1471 },
1472 {
1473 .name = "wm831x-buckp",
1474 .id = 4,
1475 .num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
1476 .resources = wm8320_dcdc4_buck_resources,
1477 },
1478 {
1479 .name = "wm831x-clk",
1480 },
1481 {
1482 .name = "wm831x-gpio",
1483 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1484 .resources = wm831x_gpio_resources,
1485 },
1486 {
1487 .name = "wm831x-hwmon",
1488 },
1489 {
1490 .name = "wm831x-ldo",
1491 .id = 1,
1492 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1493 .resources = wm831x_ldo1_resources,
1494 },
1495 {
1496 .name = "wm831x-ldo",
1497 .id = 2,
1498 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1499 .resources = wm831x_ldo2_resources,
1500 },
1501 {
1502 .name = "wm831x-ldo",
1503 .id = 3,
1504 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1505 .resources = wm831x_ldo3_resources,
1506 },
1507 {
1508 .name = "wm831x-ldo",
1509 .id = 4,
1510 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1511 .resources = wm831x_ldo4_resources,
1512 },
1513 {
1514 .name = "wm831x-ldo",
1515 .id = 5,
1516 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1517 .resources = wm831x_ldo5_resources,
1518 },
1519 {
1520 .name = "wm831x-ldo",
1521 .id = 6,
1522 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1523 .resources = wm831x_ldo6_resources,
1524 },
1525 {
1526 .name = "wm831x-aldo",
1527 .id = 7,
1528 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1529 .resources = wm831x_ldo7_resources,
1530 },
1531 {
1532 .name = "wm831x-aldo",
1533 .id = 8,
1534 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1535 .resources = wm831x_ldo8_resources,
1536 },
1537 {
1538 .name = "wm831x-aldo",
1539 .id = 9,
1540 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1541 .resources = wm831x_ldo9_resources,
1542 },
1543 {
1544 .name = "wm831x-aldo",
1545 .id = 10,
1546 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1547 .resources = wm831x_ldo10_resources,
1548 },
1549 {
1550 .name = "wm831x-alive-ldo",
1551 .id = 11,
1552 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1553 .resources = wm831x_ldo11_resources,
1554 },
1555 {
1556 .name = "wm831x-on",
1557 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1558 .resources = wm831x_on_resources,
1559 },
1560 {
1561 .name = "wm831x-status",
1562 .id = 1,
1563 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1564 .resources = wm831x_status1_resources,
1565 },
1566 {
1567 .name = "wm831x-status",
1568 .id = 2,
1569 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1570 .resources = wm831x_status2_resources,
1571 },
1572 {
1573 .name = "wm831x-watchdog",
1574 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1575 .resources = wm831x_wdt_resources,
1576 },
1577 };
1578
1579 static const struct mfd_cell touch_devs[] = {
1580 {
1581 .name = "wm831x-touch",
1582 .num_resources = ARRAY_SIZE(wm831x_touch_resources),
1583 .resources = wm831x_touch_resources,
1584 },
1585 };
1586
1587 static const struct mfd_cell rtc_devs[] = {
1588 {
1589 .name = "wm831x-rtc",
1590 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1591 .resources = wm831x_rtc_resources,
1592 },
1593 };
1594
1595 static const struct mfd_cell backlight_devs[] = {
1596 {
1597 .name = "wm831x-backlight",
1598 },
1599 };
1600
1601 struct regmap_config wm831x_regmap_config = {
1602 .reg_bits = 16,
1603 .val_bits = 16,
1604
1605 .cache_type = REGCACHE_RBTREE,
1606
1607 .max_register = WM831X_DBE_CHECK_DATA,
1608 .readable_reg = wm831x_reg_readable,
1609 .writeable_reg = wm831x_reg_writeable,
1610 .volatile_reg = wm831x_reg_volatile,
1611 };
1612 EXPORT_SYMBOL_GPL(wm831x_regmap_config);
1613
1614 const struct of_device_id wm831x_of_match[] = {
1615 { .compatible = "wlf,wm8310", .data = (void *)WM8310 },
1616 { .compatible = "wlf,wm8311", .data = (void *)WM8311 },
1617 { .compatible = "wlf,wm8312", .data = (void *)WM8312 },
1618 { .compatible = "wlf,wm8320", .data = (void *)WM8320 },
1619 { .compatible = "wlf,wm8321", .data = (void *)WM8321 },
1620 { .compatible = "wlf,wm8325", .data = (void *)WM8325 },
1621 { .compatible = "wlf,wm8326", .data = (void *)WM8326 },
1622 { },
1623 };
1624 EXPORT_SYMBOL_GPL(wm831x_of_match);
1625
1626 /*
1627 * Instantiate the generic non-control parts of the device.
1628 */
wm831x_device_init(struct wm831x * wm831x,int irq)1629 int wm831x_device_init(struct wm831x *wm831x, int irq)
1630 {
1631 struct wm831x_pdata *pdata = &wm831x->pdata;
1632 int rev, wm831x_num;
1633 enum wm831x_parent parent;
1634 int ret, i;
1635
1636 mutex_init(&wm831x->io_lock);
1637 mutex_init(&wm831x->key_lock);
1638 dev_set_drvdata(wm831x->dev, wm831x);
1639
1640 wm831x->soft_shutdown = pdata->soft_shutdown;
1641
1642 ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
1643 if (ret < 0) {
1644 dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
1645 goto err;
1646 }
1647 switch (ret) {
1648 case 0x6204:
1649 case 0x6246:
1650 break;
1651 default:
1652 dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
1653 ret = -EINVAL;
1654 goto err;
1655 }
1656
1657 ret = wm831x_reg_read(wm831x, WM831X_REVISION);
1658 if (ret < 0) {
1659 dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
1660 goto err;
1661 }
1662 rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
1663
1664 ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
1665 if (ret < 0) {
1666 dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
1667 goto err;
1668 }
1669
1670 /* Some engineering samples do not have the ID set, rely on
1671 * the device being registered correctly.
1672 */
1673 if (ret == 0) {
1674 dev_info(wm831x->dev, "Device is an engineering sample\n");
1675 ret = wm831x->type;
1676 }
1677
1678 switch (ret) {
1679 case WM8310:
1680 parent = WM8310;
1681 wm831x->num_gpio = 16;
1682 wm831x->charger_irq_wake = 1;
1683 if (rev > 0) {
1684 wm831x->has_gpio_ena = 1;
1685 wm831x->has_cs_sts = 1;
1686 }
1687
1688 dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
1689 break;
1690
1691 case WM8311:
1692 parent = WM8311;
1693 wm831x->num_gpio = 16;
1694 wm831x->charger_irq_wake = 1;
1695 if (rev > 0) {
1696 wm831x->has_gpio_ena = 1;
1697 wm831x->has_cs_sts = 1;
1698 }
1699
1700 dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
1701 break;
1702
1703 case WM8312:
1704 parent = WM8312;
1705 wm831x->num_gpio = 16;
1706 wm831x->charger_irq_wake = 1;
1707 if (rev > 0) {
1708 wm831x->has_gpio_ena = 1;
1709 wm831x->has_cs_sts = 1;
1710 }
1711
1712 dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
1713 break;
1714
1715 case WM8320:
1716 parent = WM8320;
1717 wm831x->num_gpio = 12;
1718 dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
1719 break;
1720
1721 case WM8321:
1722 parent = WM8321;
1723 wm831x->num_gpio = 12;
1724 dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
1725 break;
1726
1727 case WM8325:
1728 parent = WM8325;
1729 wm831x->num_gpio = 12;
1730 dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
1731 break;
1732
1733 case WM8326:
1734 parent = WM8326;
1735 wm831x->num_gpio = 12;
1736 dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
1737 break;
1738
1739 default:
1740 dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
1741 ret = -EINVAL;
1742 goto err;
1743 }
1744
1745 /* This will need revisiting in future but is OK for all
1746 * current parts.
1747 */
1748 if (parent != wm831x->type)
1749 dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
1750 wm831x->type);
1751
1752 /* Bootstrap the user key */
1753 ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
1754 if (ret < 0) {
1755 dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
1756 goto err;
1757 }
1758 if (ret != 0) {
1759 dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
1760 ret);
1761 wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
1762 }
1763 wm831x->locked = 1;
1764
1765 if (pdata->pre_init) {
1766 ret = pdata->pre_init(wm831x);
1767 if (ret != 0) {
1768 dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
1769 goto err;
1770 }
1771 }
1772
1773 for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
1774 if (!pdata->gpio_defaults[i])
1775 continue;
1776
1777 wm831x_reg_write(wm831x,
1778 WM831X_GPIO1_CONTROL + i,
1779 pdata->gpio_defaults[i] & 0xffff);
1780 }
1781
1782 /* Multiply by 10 as we have many subdevices of the same type */
1783 if (pdata->wm831x_num)
1784 wm831x_num = pdata->wm831x_num * 10;
1785 else
1786 wm831x_num = -1;
1787
1788 ret = wm831x_irq_init(wm831x, irq);
1789 if (ret != 0)
1790 goto err;
1791
1792 wm831x_auxadc_init(wm831x);
1793
1794 /* The core device is up, instantiate the subdevices. */
1795 switch (parent) {
1796 case WM8310:
1797 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1798 wm8310_devs, ARRAY_SIZE(wm8310_devs),
1799 NULL, 0, NULL);
1800 break;
1801
1802 case WM8311:
1803 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1804 wm8311_devs, ARRAY_SIZE(wm8311_devs),
1805 NULL, 0, NULL);
1806 if (!pdata->disable_touch)
1807 mfd_add_devices(wm831x->dev, wm831x_num,
1808 touch_devs, ARRAY_SIZE(touch_devs),
1809 NULL, 0, NULL);
1810 break;
1811
1812 case WM8312:
1813 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1814 wm8312_devs, ARRAY_SIZE(wm8312_devs),
1815 NULL, 0, NULL);
1816 if (!pdata->disable_touch)
1817 mfd_add_devices(wm831x->dev, wm831x_num,
1818 touch_devs, ARRAY_SIZE(touch_devs),
1819 NULL, 0, NULL);
1820 break;
1821
1822 case WM8320:
1823 case WM8321:
1824 case WM8325:
1825 case WM8326:
1826 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1827 wm8320_devs, ARRAY_SIZE(wm8320_devs),
1828 NULL, 0, NULL);
1829 break;
1830
1831 default:
1832 /* If this happens the bus probe function is buggy */
1833 BUG();
1834 }
1835
1836 if (ret != 0) {
1837 dev_err(wm831x->dev, "Failed to add children\n");
1838 goto err_irq;
1839 }
1840
1841 /* The RTC can only be used if the 32.768kHz crystal is
1842 * enabled; this can't be controlled by software at runtime.
1843 */
1844 ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
1845 if (ret < 0) {
1846 dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
1847 goto err_irq;
1848 }
1849
1850 if (ret & WM831X_XTAL_ENA) {
1851 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1852 rtc_devs, ARRAY_SIZE(rtc_devs),
1853 NULL, 0, NULL);
1854 if (ret != 0) {
1855 dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
1856 goto err_irq;
1857 }
1858 } else {
1859 dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
1860 }
1861
1862 if (pdata->backlight) {
1863 /* Treat errors as non-critical */
1864 ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
1865 ARRAY_SIZE(backlight_devs), NULL,
1866 0, NULL);
1867 if (ret < 0)
1868 dev_err(wm831x->dev, "Failed to add backlight: %d\n",
1869 ret);
1870 }
1871
1872 wm831x_otp_init(wm831x);
1873
1874 if (pdata->post_init) {
1875 ret = pdata->post_init(wm831x);
1876 if (ret != 0) {
1877 dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
1878 goto err_irq;
1879 }
1880 }
1881
1882 return 0;
1883
1884 err_irq:
1885 wm831x_irq_exit(wm831x);
1886 err:
1887 mfd_remove_devices(wm831x->dev);
1888 return ret;
1889 }
1890
wm831x_device_suspend(struct wm831x * wm831x)1891 int wm831x_device_suspend(struct wm831x *wm831x)
1892 {
1893 int reg, mask;
1894
1895 /* If the charger IRQs are a wake source then make sure we ack
1896 * them even if they're not actively being used (eg, no power
1897 * driver or no IRQ line wired up) then acknowledge the
1898 * interrupts otherwise suspend won't last very long.
1899 */
1900 if (wm831x->charger_irq_wake) {
1901 reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
1902
1903 mask = WM831X_CHG_BATT_HOT_EINT |
1904 WM831X_CHG_BATT_COLD_EINT |
1905 WM831X_CHG_BATT_FAIL_EINT |
1906 WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
1907 WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
1908 WM831X_CHG_START_EINT;
1909
1910 /* If any of the interrupts are masked read the statuses */
1911 if (reg & mask)
1912 reg = wm831x_reg_read(wm831x,
1913 WM831X_INTERRUPT_STATUS_2);
1914
1915 if (reg & mask) {
1916 dev_info(wm831x->dev,
1917 "Acknowledging masked charger IRQs: %x\n",
1918 reg & mask);
1919 wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
1920 reg & mask);
1921 }
1922 }
1923
1924 return 0;
1925 }
1926
wm831x_device_shutdown(struct wm831x * wm831x)1927 void wm831x_device_shutdown(struct wm831x *wm831x)
1928 {
1929 if (wm831x->soft_shutdown) {
1930 dev_info(wm831x->dev, "Initiating shutdown...\n");
1931 wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
1932 }
1933 }
1934 EXPORT_SYMBOL_GPL(wm831x_device_shutdown);
1935