1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * wm831x-core.c -- Device access for Wolfson WM831x PMICs
5 * Copyright 2009 Wolfson Microelectronics PLC.
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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>
19 #include <linux/of_device.h>
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>
29 /* Current settings - values are 2*2^(reg_val/4) microamps. These are
30 * exported since they are used by multiple drivers.
32 const unsigned int wm831x_isinkv_values[WM831X_ISINK_MAX_ISEL + 1] = {
90 EXPORT_SYMBOL_GPL(wm831x_isinkv_values);
92 static int wm831x_reg_locked(struct wm831x *wm831x, unsigned short reg)
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:
112 * wm831x_reg_lock: Unlock user keyed registers
114 * The WM831x has a user key preventing writes to particularly
115 * critical registers. This function locks those registers,
116 * allowing writes to them.
118 * @wm831x: pointer to local driver data structure
120 void wm831x_reg_lock(struct wm831x *wm831x)
124 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
126 dev_vdbg(wm831x->dev, "Registers locked\n");
128 mutex_lock(&wm831x->io_lock);
129 WARN_ON(wm831x->locked);
131 mutex_unlock(&wm831x->io_lock);
133 dev_err(wm831x->dev, "Failed to lock registers: %d\n", ret);
137 EXPORT_SYMBOL_GPL(wm831x_reg_lock);
140 * wm831x_reg_unlock: Unlock user keyed registers
142 * The WM831x has a user key preventing writes to particularly
143 * critical registers. This function locks those registers,
144 * preventing spurious writes.
146 * @wm831x: pointer to local driver data structure
148 int wm831x_reg_unlock(struct wm831x *wm831x)
152 /* 0x9716 is the value required to unlock the registers */
153 ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0x9716);
155 dev_vdbg(wm831x->dev, "Registers unlocked\n");
157 mutex_lock(&wm831x->io_lock);
158 WARN_ON(!wm831x->locked);
160 mutex_unlock(&wm831x->io_lock);
165 EXPORT_SYMBOL_GPL(wm831x_reg_unlock);
167 static bool wm831x_reg_readable(struct device *dev, unsigned int reg)
170 case WM831X_RESET_ID:
171 case WM831X_REVISION:
172 case WM831X_PARENT_ID:
173 case WM831X_SYSVDD_CONTROL:
174 case WM831X_THERMAL_MONITORING:
175 case WM831X_POWER_STATE:
176 case WM831X_WATCHDOG:
177 case WM831X_ON_PIN_CONTROL:
178 case WM831X_RESET_CONTROL:
179 case WM831X_CONTROL_INTERFACE:
180 case WM831X_SECURITY_KEY:
181 case WM831X_SOFTWARE_SCRATCH:
182 case WM831X_OTP_CONTROL:
183 case WM831X_GPIO_LEVEL:
184 case WM831X_SYSTEM_STATUS:
185 case WM831X_ON_SOURCE:
186 case WM831X_OFF_SOURCE:
187 case WM831X_SYSTEM_INTERRUPTS:
188 case WM831X_INTERRUPT_STATUS_1:
189 case WM831X_INTERRUPT_STATUS_2:
190 case WM831X_INTERRUPT_STATUS_3:
191 case WM831X_INTERRUPT_STATUS_4:
192 case WM831X_INTERRUPT_STATUS_5:
193 case WM831X_IRQ_CONFIG:
194 case WM831X_SYSTEM_INTERRUPTS_MASK:
195 case WM831X_INTERRUPT_STATUS_1_MASK:
196 case WM831X_INTERRUPT_STATUS_2_MASK:
197 case WM831X_INTERRUPT_STATUS_3_MASK:
198 case WM831X_INTERRUPT_STATUS_4_MASK:
199 case WM831X_INTERRUPT_STATUS_5_MASK:
200 case WM831X_RTC_WRITE_COUNTER:
201 case WM831X_RTC_TIME_1:
202 case WM831X_RTC_TIME_2:
203 case WM831X_RTC_ALARM_1:
204 case WM831X_RTC_ALARM_2:
205 case WM831X_RTC_CONTROL:
206 case WM831X_RTC_TRIM:
207 case WM831X_TOUCH_CONTROL_1:
208 case WM831X_TOUCH_CONTROL_2:
209 case WM831X_TOUCH_DATA_X:
210 case WM831X_TOUCH_DATA_Y:
211 case WM831X_TOUCH_DATA_Z:
212 case WM831X_AUXADC_DATA:
213 case WM831X_AUXADC_CONTROL:
214 case WM831X_AUXADC_SOURCE:
215 case WM831X_COMPARATOR_CONTROL:
216 case WM831X_COMPARATOR_1:
217 case WM831X_COMPARATOR_2:
218 case WM831X_COMPARATOR_3:
219 case WM831X_COMPARATOR_4:
220 case WM831X_GPIO1_CONTROL:
221 case WM831X_GPIO2_CONTROL:
222 case WM831X_GPIO3_CONTROL:
223 case WM831X_GPIO4_CONTROL:
224 case WM831X_GPIO5_CONTROL:
225 case WM831X_GPIO6_CONTROL:
226 case WM831X_GPIO7_CONTROL:
227 case WM831X_GPIO8_CONTROL:
228 case WM831X_GPIO9_CONTROL:
229 case WM831X_GPIO10_CONTROL:
230 case WM831X_GPIO11_CONTROL:
231 case WM831X_GPIO12_CONTROL:
232 case WM831X_GPIO13_CONTROL:
233 case WM831X_GPIO14_CONTROL:
234 case WM831X_GPIO15_CONTROL:
235 case WM831X_GPIO16_CONTROL:
236 case WM831X_CHARGER_CONTROL_1:
237 case WM831X_CHARGER_CONTROL_2:
238 case WM831X_CHARGER_STATUS:
239 case WM831X_BACKUP_CHARGER_CONTROL:
240 case WM831X_STATUS_LED_1:
241 case WM831X_STATUS_LED_2:
242 case WM831X_CURRENT_SINK_1:
243 case WM831X_CURRENT_SINK_2:
244 case WM831X_DCDC_ENABLE:
245 case WM831X_LDO_ENABLE:
246 case WM831X_DCDC_STATUS:
247 case WM831X_LDO_STATUS:
248 case WM831X_DCDC_UV_STATUS:
249 case WM831X_LDO_UV_STATUS:
250 case WM831X_DC1_CONTROL_1:
251 case WM831X_DC1_CONTROL_2:
252 case WM831X_DC1_ON_CONFIG:
253 case WM831X_DC1_SLEEP_CONTROL:
254 case WM831X_DC1_DVS_CONTROL:
255 case WM831X_DC2_CONTROL_1:
256 case WM831X_DC2_CONTROL_2:
257 case WM831X_DC2_ON_CONFIG:
258 case WM831X_DC2_SLEEP_CONTROL:
259 case WM831X_DC2_DVS_CONTROL:
260 case WM831X_DC3_CONTROL_1:
261 case WM831X_DC3_CONTROL_2:
262 case WM831X_DC3_ON_CONFIG:
263 case WM831X_DC3_SLEEP_CONTROL:
264 case WM831X_DC4_CONTROL:
265 case WM831X_DC4_SLEEP_CONTROL:
266 case WM831X_EPE1_CONTROL:
267 case WM831X_EPE2_CONTROL:
268 case WM831X_LDO1_CONTROL:
269 case WM831X_LDO1_ON_CONTROL:
270 case WM831X_LDO1_SLEEP_CONTROL:
271 case WM831X_LDO2_CONTROL:
272 case WM831X_LDO2_ON_CONTROL:
273 case WM831X_LDO2_SLEEP_CONTROL:
274 case WM831X_LDO3_CONTROL:
275 case WM831X_LDO3_ON_CONTROL:
276 case WM831X_LDO3_SLEEP_CONTROL:
277 case WM831X_LDO4_CONTROL:
278 case WM831X_LDO4_ON_CONTROL:
279 case WM831X_LDO4_SLEEP_CONTROL:
280 case WM831X_LDO5_CONTROL:
281 case WM831X_LDO5_ON_CONTROL:
282 case WM831X_LDO5_SLEEP_CONTROL:
283 case WM831X_LDO6_CONTROL:
284 case WM831X_LDO6_ON_CONTROL:
285 case WM831X_LDO6_SLEEP_CONTROL:
286 case WM831X_LDO7_CONTROL:
287 case WM831X_LDO7_ON_CONTROL:
288 case WM831X_LDO7_SLEEP_CONTROL:
289 case WM831X_LDO8_CONTROL:
290 case WM831X_LDO8_ON_CONTROL:
291 case WM831X_LDO8_SLEEP_CONTROL:
292 case WM831X_LDO9_CONTROL:
293 case WM831X_LDO9_ON_CONTROL:
294 case WM831X_LDO9_SLEEP_CONTROL:
295 case WM831X_LDO10_CONTROL:
296 case WM831X_LDO10_ON_CONTROL:
297 case WM831X_LDO10_SLEEP_CONTROL:
298 case WM831X_LDO11_ON_CONTROL:
299 case WM831X_LDO11_SLEEP_CONTROL:
300 case WM831X_POWER_GOOD_SOURCE_1:
301 case WM831X_POWER_GOOD_SOURCE_2:
302 case WM831X_CLOCK_CONTROL_1:
303 case WM831X_CLOCK_CONTROL_2:
304 case WM831X_FLL_CONTROL_1:
305 case WM831X_FLL_CONTROL_2:
306 case WM831X_FLL_CONTROL_3:
307 case WM831X_FLL_CONTROL_4:
308 case WM831X_FLL_CONTROL_5:
309 case WM831X_UNIQUE_ID_1:
310 case WM831X_UNIQUE_ID_2:
311 case WM831X_UNIQUE_ID_3:
312 case WM831X_UNIQUE_ID_4:
313 case WM831X_UNIQUE_ID_5:
314 case WM831X_UNIQUE_ID_6:
315 case WM831X_UNIQUE_ID_7:
316 case WM831X_UNIQUE_ID_8:
317 case WM831X_FACTORY_OTP_ID:
318 case WM831X_FACTORY_OTP_1:
319 case WM831X_FACTORY_OTP_2:
320 case WM831X_FACTORY_OTP_3:
321 case WM831X_FACTORY_OTP_4:
322 case WM831X_FACTORY_OTP_5:
323 case WM831X_CUSTOMER_OTP_ID:
324 case WM831X_DC1_OTP_CONTROL:
325 case WM831X_DC2_OTP_CONTROL:
326 case WM831X_DC3_OTP_CONTROL:
327 case WM831X_LDO1_2_OTP_CONTROL:
328 case WM831X_LDO3_4_OTP_CONTROL:
329 case WM831X_LDO5_6_OTP_CONTROL:
330 case WM831X_LDO7_8_OTP_CONTROL:
331 case WM831X_LDO9_10_OTP_CONTROL:
332 case WM831X_LDO11_EPE_CONTROL:
333 case WM831X_GPIO1_OTP_CONTROL:
334 case WM831X_GPIO2_OTP_CONTROL:
335 case WM831X_GPIO3_OTP_CONTROL:
336 case WM831X_GPIO4_OTP_CONTROL:
337 case WM831X_GPIO5_OTP_CONTROL:
338 case WM831X_GPIO6_OTP_CONTROL:
339 case WM831X_DBE_CHECK_DATA:
346 static bool wm831x_reg_writeable(struct device *dev, unsigned int reg)
348 struct wm831x *wm831x = dev_get_drvdata(dev);
350 if (wm831x_reg_locked(wm831x, reg))
354 case WM831X_SYSVDD_CONTROL:
355 case WM831X_THERMAL_MONITORING:
356 case WM831X_POWER_STATE:
357 case WM831X_WATCHDOG:
358 case WM831X_ON_PIN_CONTROL:
359 case WM831X_RESET_CONTROL:
360 case WM831X_CONTROL_INTERFACE:
361 case WM831X_SECURITY_KEY:
362 case WM831X_SOFTWARE_SCRATCH:
363 case WM831X_OTP_CONTROL:
364 case WM831X_GPIO_LEVEL:
365 case WM831X_INTERRUPT_STATUS_1:
366 case WM831X_INTERRUPT_STATUS_2:
367 case WM831X_INTERRUPT_STATUS_3:
368 case WM831X_INTERRUPT_STATUS_4:
369 case WM831X_INTERRUPT_STATUS_5:
370 case WM831X_IRQ_CONFIG:
371 case WM831X_SYSTEM_INTERRUPTS_MASK:
372 case WM831X_INTERRUPT_STATUS_1_MASK:
373 case WM831X_INTERRUPT_STATUS_2_MASK:
374 case WM831X_INTERRUPT_STATUS_3_MASK:
375 case WM831X_INTERRUPT_STATUS_4_MASK:
376 case WM831X_INTERRUPT_STATUS_5_MASK:
377 case WM831X_RTC_TIME_1:
378 case WM831X_RTC_TIME_2:
379 case WM831X_RTC_ALARM_1:
380 case WM831X_RTC_ALARM_2:
381 case WM831X_RTC_CONTROL:
382 case WM831X_RTC_TRIM:
383 case WM831X_TOUCH_CONTROL_1:
384 case WM831X_TOUCH_CONTROL_2:
385 case WM831X_AUXADC_CONTROL:
386 case WM831X_AUXADC_SOURCE:
387 case WM831X_COMPARATOR_CONTROL:
388 case WM831X_COMPARATOR_1:
389 case WM831X_COMPARATOR_2:
390 case WM831X_COMPARATOR_3:
391 case WM831X_COMPARATOR_4:
392 case WM831X_GPIO1_CONTROL:
393 case WM831X_GPIO2_CONTROL:
394 case WM831X_GPIO3_CONTROL:
395 case WM831X_GPIO4_CONTROL:
396 case WM831X_GPIO5_CONTROL:
397 case WM831X_GPIO6_CONTROL:
398 case WM831X_GPIO7_CONTROL:
399 case WM831X_GPIO8_CONTROL:
400 case WM831X_GPIO9_CONTROL:
401 case WM831X_GPIO10_CONTROL:
402 case WM831X_GPIO11_CONTROL:
403 case WM831X_GPIO12_CONTROL:
404 case WM831X_GPIO13_CONTROL:
405 case WM831X_GPIO14_CONTROL:
406 case WM831X_GPIO15_CONTROL:
407 case WM831X_GPIO16_CONTROL:
408 case WM831X_CHARGER_CONTROL_1:
409 case WM831X_CHARGER_CONTROL_2:
410 case WM831X_CHARGER_STATUS:
411 case WM831X_BACKUP_CHARGER_CONTROL:
412 case WM831X_STATUS_LED_1:
413 case WM831X_STATUS_LED_2:
414 case WM831X_CURRENT_SINK_1:
415 case WM831X_CURRENT_SINK_2:
416 case WM831X_DCDC_ENABLE:
417 case WM831X_LDO_ENABLE:
418 case WM831X_DC1_CONTROL_1:
419 case WM831X_DC1_CONTROL_2:
420 case WM831X_DC1_ON_CONFIG:
421 case WM831X_DC1_SLEEP_CONTROL:
422 case WM831X_DC1_DVS_CONTROL:
423 case WM831X_DC2_CONTROL_1:
424 case WM831X_DC2_CONTROL_2:
425 case WM831X_DC2_ON_CONFIG:
426 case WM831X_DC2_SLEEP_CONTROL:
427 case WM831X_DC2_DVS_CONTROL:
428 case WM831X_DC3_CONTROL_1:
429 case WM831X_DC3_CONTROL_2:
430 case WM831X_DC3_ON_CONFIG:
431 case WM831X_DC3_SLEEP_CONTROL:
432 case WM831X_DC4_CONTROL:
433 case WM831X_DC4_SLEEP_CONTROL:
434 case WM831X_EPE1_CONTROL:
435 case WM831X_EPE2_CONTROL:
436 case WM831X_LDO1_CONTROL:
437 case WM831X_LDO1_ON_CONTROL:
438 case WM831X_LDO1_SLEEP_CONTROL:
439 case WM831X_LDO2_CONTROL:
440 case WM831X_LDO2_ON_CONTROL:
441 case WM831X_LDO2_SLEEP_CONTROL:
442 case WM831X_LDO3_CONTROL:
443 case WM831X_LDO3_ON_CONTROL:
444 case WM831X_LDO3_SLEEP_CONTROL:
445 case WM831X_LDO4_CONTROL:
446 case WM831X_LDO4_ON_CONTROL:
447 case WM831X_LDO4_SLEEP_CONTROL:
448 case WM831X_LDO5_CONTROL:
449 case WM831X_LDO5_ON_CONTROL:
450 case WM831X_LDO5_SLEEP_CONTROL:
451 case WM831X_LDO6_CONTROL:
452 case WM831X_LDO6_ON_CONTROL:
453 case WM831X_LDO6_SLEEP_CONTROL:
454 case WM831X_LDO7_CONTROL:
455 case WM831X_LDO7_ON_CONTROL:
456 case WM831X_LDO7_SLEEP_CONTROL:
457 case WM831X_LDO8_CONTROL:
458 case WM831X_LDO8_ON_CONTROL:
459 case WM831X_LDO8_SLEEP_CONTROL:
460 case WM831X_LDO9_CONTROL:
461 case WM831X_LDO9_ON_CONTROL:
462 case WM831X_LDO9_SLEEP_CONTROL:
463 case WM831X_LDO10_CONTROL:
464 case WM831X_LDO10_ON_CONTROL:
465 case WM831X_LDO10_SLEEP_CONTROL:
466 case WM831X_LDO11_ON_CONTROL:
467 case WM831X_LDO11_SLEEP_CONTROL:
468 case WM831X_POWER_GOOD_SOURCE_1:
469 case WM831X_POWER_GOOD_SOURCE_2:
470 case WM831X_CLOCK_CONTROL_1:
471 case WM831X_CLOCK_CONTROL_2:
472 case WM831X_FLL_CONTROL_1:
473 case WM831X_FLL_CONTROL_2:
474 case WM831X_FLL_CONTROL_3:
475 case WM831X_FLL_CONTROL_4:
476 case WM831X_FLL_CONTROL_5:
483 static bool wm831x_reg_volatile(struct device *dev, unsigned int reg)
486 case WM831X_SYSTEM_STATUS:
487 case WM831X_ON_SOURCE:
488 case WM831X_OFF_SOURCE:
489 case WM831X_GPIO_LEVEL:
490 case WM831X_SYSTEM_INTERRUPTS:
491 case WM831X_INTERRUPT_STATUS_1:
492 case WM831X_INTERRUPT_STATUS_2:
493 case WM831X_INTERRUPT_STATUS_3:
494 case WM831X_INTERRUPT_STATUS_4:
495 case WM831X_INTERRUPT_STATUS_5:
496 case WM831X_RTC_TIME_1:
497 case WM831X_RTC_TIME_2:
498 case WM831X_TOUCH_DATA_X:
499 case WM831X_TOUCH_DATA_Y:
500 case WM831X_TOUCH_DATA_Z:
501 case WM831X_AUXADC_DATA:
502 case WM831X_CHARGER_STATUS:
503 case WM831X_DCDC_STATUS:
504 case WM831X_LDO_STATUS:
505 case WM831X_DCDC_UV_STATUS:
506 case WM831X_LDO_UV_STATUS:
514 * wm831x_reg_read: Read a single WM831x register.
516 * @wm831x: Device to read from.
517 * @reg: Register to read.
519 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg)
524 ret = regmap_read(wm831x->regmap, reg, &val);
531 EXPORT_SYMBOL_GPL(wm831x_reg_read);
534 * wm831x_bulk_read: Read multiple WM831x registers
536 * @wm831x: Device to read from
537 * @reg: First register
538 * @count: Number of registers
539 * @buf: Buffer to fill.
541 int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg,
544 return regmap_bulk_read(wm831x->regmap, reg, buf, count);
546 EXPORT_SYMBOL_GPL(wm831x_bulk_read);
548 static int wm831x_write(struct wm831x *wm831x, unsigned short reg,
549 int bytes, void *src)
557 for (i = 0; i < bytes / 2; i++) {
558 if (wm831x_reg_locked(wm831x, reg))
561 dev_vdbg(wm831x->dev, "Write %04x to R%d(0x%x)\n",
562 buf[i], reg + i, reg + i);
563 ret = regmap_write(wm831x->regmap, reg + i, buf[i]);
572 * wm831x_reg_write: Write a single WM831x register.
574 * @wm831x: Device to write to.
575 * @reg: Register to write to.
576 * @val: Value to write.
578 int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
583 mutex_lock(&wm831x->io_lock);
585 ret = wm831x_write(wm831x, reg, 2, &val);
587 mutex_unlock(&wm831x->io_lock);
591 EXPORT_SYMBOL_GPL(wm831x_reg_write);
594 * wm831x_set_bits: Set the value of a bitfield in a WM831x register
596 * @wm831x: Device to write to.
597 * @reg: Register to write to.
598 * @mask: Mask of bits to set.
599 * @val: Value to set (unshifted)
601 int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
602 unsigned short mask, unsigned short val)
606 mutex_lock(&wm831x->io_lock);
608 if (!wm831x_reg_locked(wm831x, reg))
609 ret = regmap_update_bits(wm831x->regmap, reg, mask, val);
613 mutex_unlock(&wm831x->io_lock);
617 EXPORT_SYMBOL_GPL(wm831x_set_bits);
619 static const struct resource wm831x_dcdc1_resources[] = {
621 .start = WM831X_DC1_CONTROL_1,
622 .end = WM831X_DC1_DVS_CONTROL,
623 .flags = IORESOURCE_REG,
625 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC1, "UV"),
626 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC1, "HC"),
630 static const struct resource wm831x_dcdc2_resources[] = {
632 .start = WM831X_DC2_CONTROL_1,
633 .end = WM831X_DC2_DVS_CONTROL,
634 .flags = IORESOURCE_REG,
636 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC2, "UV"),
637 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_HC_DC2, "HC"),
640 static const struct resource wm831x_dcdc3_resources[] = {
642 .start = WM831X_DC3_CONTROL_1,
643 .end = WM831X_DC3_SLEEP_CONTROL,
644 .flags = IORESOURCE_REG,
646 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC3, "UV"),
649 static const struct resource wm831x_dcdc4_resources[] = {
651 .start = WM831X_DC4_CONTROL,
652 .end = WM831X_DC4_SLEEP_CONTROL,
653 .flags = IORESOURCE_REG,
655 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
658 static const struct resource wm8320_dcdc4_buck_resources[] = {
660 .start = WM831X_DC4_CONTROL,
661 .end = WM832X_DC4_SLEEP_CONTROL,
662 .flags = IORESOURCE_REG,
664 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_DC4, "UV"),
667 static const struct resource wm831x_gpio_resources[] = {
669 .start = WM831X_IRQ_GPIO_1,
670 .end = WM831X_IRQ_GPIO_16,
671 .flags = IORESOURCE_IRQ,
675 static const struct resource wm831x_isink1_resources[] = {
677 .start = WM831X_CURRENT_SINK_1,
678 .end = WM831X_CURRENT_SINK_1,
679 .flags = IORESOURCE_REG,
681 DEFINE_RES_IRQ(WM831X_IRQ_CS1),
684 static const struct resource wm831x_isink2_resources[] = {
686 .start = WM831X_CURRENT_SINK_2,
687 .end = WM831X_CURRENT_SINK_2,
688 .flags = IORESOURCE_REG,
690 DEFINE_RES_IRQ(WM831X_IRQ_CS2),
693 static const struct resource wm831x_ldo1_resources[] = {
695 .start = WM831X_LDO1_CONTROL,
696 .end = WM831X_LDO1_SLEEP_CONTROL,
697 .flags = IORESOURCE_REG,
699 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO1, "UV"),
702 static const struct resource wm831x_ldo2_resources[] = {
704 .start = WM831X_LDO2_CONTROL,
705 .end = WM831X_LDO2_SLEEP_CONTROL,
706 .flags = IORESOURCE_REG,
708 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO2, "UV"),
711 static const struct resource wm831x_ldo3_resources[] = {
713 .start = WM831X_LDO3_CONTROL,
714 .end = WM831X_LDO3_SLEEP_CONTROL,
715 .flags = IORESOURCE_REG,
717 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO3, "UV"),
720 static const struct resource wm831x_ldo4_resources[] = {
722 .start = WM831X_LDO4_CONTROL,
723 .end = WM831X_LDO4_SLEEP_CONTROL,
724 .flags = IORESOURCE_REG,
726 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO4, "UV"),
729 static const struct resource wm831x_ldo5_resources[] = {
731 .start = WM831X_LDO5_CONTROL,
732 .end = WM831X_LDO5_SLEEP_CONTROL,
733 .flags = IORESOURCE_REG,
735 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO5, "UV"),
738 static const struct resource wm831x_ldo6_resources[] = {
740 .start = WM831X_LDO6_CONTROL,
741 .end = WM831X_LDO6_SLEEP_CONTROL,
742 .flags = IORESOURCE_REG,
744 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO6, "UV"),
747 static const struct resource wm831x_ldo7_resources[] = {
749 .start = WM831X_LDO7_CONTROL,
750 .end = WM831X_LDO7_SLEEP_CONTROL,
751 .flags = IORESOURCE_REG,
753 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO7, "UV"),
756 static const struct resource wm831x_ldo8_resources[] = {
758 .start = WM831X_LDO8_CONTROL,
759 .end = WM831X_LDO8_SLEEP_CONTROL,
760 .flags = IORESOURCE_REG,
762 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO8, "UV"),
765 static const struct resource wm831x_ldo9_resources[] = {
767 .start = WM831X_LDO9_CONTROL,
768 .end = WM831X_LDO9_SLEEP_CONTROL,
769 .flags = IORESOURCE_REG,
771 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO9, "UV"),
774 static const struct resource wm831x_ldo10_resources[] = {
776 .start = WM831X_LDO10_CONTROL,
777 .end = WM831X_LDO10_SLEEP_CONTROL,
778 .flags = IORESOURCE_REG,
780 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_UV_LDO10, "UV"),
783 static const struct resource wm831x_ldo11_resources[] = {
785 .start = WM831X_LDO11_ON_CONTROL,
786 .end = WM831X_LDO11_SLEEP_CONTROL,
787 .flags = IORESOURCE_REG,
791 static const struct resource wm831x_on_resources[] = {
792 DEFINE_RES_IRQ(WM831X_IRQ_ON),
796 static const struct resource wm831x_power_resources[] = {
797 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_SYSLO, "SYSLO"),
798 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_PWR_SRC, "PWR SRC"),
799 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_PPM_USB_CURR, "USB CURR"),
800 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_HOT, "BATT HOT"),
801 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_COLD, "BATT COLD"),
802 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_BATT_FAIL, "BATT FAIL"),
803 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_OV, "OV"),
804 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_END, "END"),
805 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_TO, "TO"),
806 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_MODE, "MODE"),
807 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_CHG_START, "START"),
810 static const struct resource wm831x_rtc_resources[] = {
811 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_PER, "PER"),
812 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_RTC_ALM, "ALM"),
815 static const struct resource wm831x_status1_resources[] = {
817 .start = WM831X_STATUS_LED_1,
818 .end = WM831X_STATUS_LED_1,
819 .flags = IORESOURCE_REG,
823 static const struct resource wm831x_status2_resources[] = {
825 .start = WM831X_STATUS_LED_2,
826 .end = WM831X_STATUS_LED_2,
827 .flags = IORESOURCE_REG,
831 static const struct resource wm831x_touch_resources[] = {
832 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHPD, "TCHPD"),
833 DEFINE_RES_IRQ_NAMED(WM831X_IRQ_TCHDATA, "TCHDATA"),
836 static const struct resource wm831x_wdt_resources[] = {
837 DEFINE_RES_IRQ(WM831X_IRQ_WDOG_TO),
840 static const struct mfd_cell wm8310_devs[] = {
842 .name = "wm831x-backup",
845 .name = "wm831x-buckv",
847 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
848 .resources = wm831x_dcdc1_resources,
851 .name = "wm831x-buckv",
853 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
854 .resources = wm831x_dcdc2_resources,
857 .name = "wm831x-buckp",
859 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
860 .resources = wm831x_dcdc3_resources,
863 .name = "wm831x-boostp",
865 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
866 .resources = wm831x_dcdc4_resources,
869 .name = "wm831x-clk",
872 .name = "wm831x-epe",
876 .name = "wm831x-epe",
880 .name = "wm831x-gpio",
881 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
882 .resources = wm831x_gpio_resources,
885 .name = "wm831x-hwmon",
888 .name = "wm831x-isink",
890 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
891 .resources = wm831x_isink1_resources,
894 .name = "wm831x-isink",
896 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
897 .resources = wm831x_isink2_resources,
900 .name = "wm831x-ldo",
902 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
903 .resources = wm831x_ldo1_resources,
906 .name = "wm831x-ldo",
908 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
909 .resources = wm831x_ldo2_resources,
912 .name = "wm831x-ldo",
914 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
915 .resources = wm831x_ldo3_resources,
918 .name = "wm831x-ldo",
920 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
921 .resources = wm831x_ldo4_resources,
924 .name = "wm831x-ldo",
926 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
927 .resources = wm831x_ldo5_resources,
930 .name = "wm831x-ldo",
932 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
933 .resources = wm831x_ldo6_resources,
936 .name = "wm831x-aldo",
938 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
939 .resources = wm831x_ldo7_resources,
942 .name = "wm831x-aldo",
944 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
945 .resources = wm831x_ldo8_resources,
948 .name = "wm831x-aldo",
950 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
951 .resources = wm831x_ldo9_resources,
954 .name = "wm831x-aldo",
956 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
957 .resources = wm831x_ldo10_resources,
960 .name = "wm831x-alive-ldo",
962 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
963 .resources = wm831x_ldo11_resources,
967 .num_resources = ARRAY_SIZE(wm831x_on_resources),
968 .resources = wm831x_on_resources,
971 .name = "wm831x-power",
972 .num_resources = ARRAY_SIZE(wm831x_power_resources),
973 .resources = wm831x_power_resources,
976 .name = "wm831x-status",
978 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
979 .resources = wm831x_status1_resources,
982 .name = "wm831x-status",
984 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
985 .resources = wm831x_status2_resources,
988 .name = "wm831x-watchdog",
989 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
990 .resources = wm831x_wdt_resources,
994 static const struct mfd_cell wm8311_devs[] = {
996 .name = "wm831x-backup",
999 .name = "wm831x-buckv",
1001 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1002 .resources = wm831x_dcdc1_resources,
1005 .name = "wm831x-buckv",
1007 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1008 .resources = wm831x_dcdc2_resources,
1011 .name = "wm831x-buckp",
1013 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1014 .resources = wm831x_dcdc3_resources,
1017 .name = "wm831x-boostp",
1019 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1020 .resources = wm831x_dcdc4_resources,
1023 .name = "wm831x-clk",
1026 .name = "wm831x-epe",
1030 .name = "wm831x-epe",
1034 .name = "wm831x-gpio",
1035 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1036 .resources = wm831x_gpio_resources,
1039 .name = "wm831x-hwmon",
1042 .name = "wm831x-isink",
1044 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1045 .resources = wm831x_isink1_resources,
1048 .name = "wm831x-isink",
1050 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1051 .resources = wm831x_isink2_resources,
1054 .name = "wm831x-ldo",
1056 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1057 .resources = wm831x_ldo1_resources,
1060 .name = "wm831x-ldo",
1062 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1063 .resources = wm831x_ldo2_resources,
1066 .name = "wm831x-ldo",
1068 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1069 .resources = wm831x_ldo3_resources,
1072 .name = "wm831x-ldo",
1074 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1075 .resources = wm831x_ldo4_resources,
1078 .name = "wm831x-ldo",
1080 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1081 .resources = wm831x_ldo5_resources,
1084 .name = "wm831x-aldo",
1086 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1087 .resources = wm831x_ldo7_resources,
1090 .name = "wm831x-alive-ldo",
1092 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1093 .resources = wm831x_ldo11_resources,
1096 .name = "wm831x-on",
1097 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1098 .resources = wm831x_on_resources,
1101 .name = "wm831x-power",
1102 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1103 .resources = wm831x_power_resources,
1106 .name = "wm831x-status",
1108 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1109 .resources = wm831x_status1_resources,
1112 .name = "wm831x-status",
1114 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1115 .resources = wm831x_status2_resources,
1118 .name = "wm831x-watchdog",
1119 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1120 .resources = wm831x_wdt_resources,
1124 static const struct mfd_cell wm8312_devs[] = {
1126 .name = "wm831x-backup",
1129 .name = "wm831x-buckv",
1131 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1132 .resources = wm831x_dcdc1_resources,
1135 .name = "wm831x-buckv",
1137 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1138 .resources = wm831x_dcdc2_resources,
1141 .name = "wm831x-buckp",
1143 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1144 .resources = wm831x_dcdc3_resources,
1147 .name = "wm831x-boostp",
1149 .num_resources = ARRAY_SIZE(wm831x_dcdc4_resources),
1150 .resources = wm831x_dcdc4_resources,
1153 .name = "wm831x-clk",
1156 .name = "wm831x-epe",
1160 .name = "wm831x-epe",
1164 .name = "wm831x-gpio",
1165 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1166 .resources = wm831x_gpio_resources,
1169 .name = "wm831x-hwmon",
1172 .name = "wm831x-isink",
1174 .num_resources = ARRAY_SIZE(wm831x_isink1_resources),
1175 .resources = wm831x_isink1_resources,
1178 .name = "wm831x-isink",
1180 .num_resources = ARRAY_SIZE(wm831x_isink2_resources),
1181 .resources = wm831x_isink2_resources,
1184 .name = "wm831x-ldo",
1186 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1187 .resources = wm831x_ldo1_resources,
1190 .name = "wm831x-ldo",
1192 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1193 .resources = wm831x_ldo2_resources,
1196 .name = "wm831x-ldo",
1198 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1199 .resources = wm831x_ldo3_resources,
1202 .name = "wm831x-ldo",
1204 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1205 .resources = wm831x_ldo4_resources,
1208 .name = "wm831x-ldo",
1210 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1211 .resources = wm831x_ldo5_resources,
1214 .name = "wm831x-ldo",
1216 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1217 .resources = wm831x_ldo6_resources,
1220 .name = "wm831x-aldo",
1222 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1223 .resources = wm831x_ldo7_resources,
1226 .name = "wm831x-aldo",
1228 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1229 .resources = wm831x_ldo8_resources,
1232 .name = "wm831x-aldo",
1234 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1235 .resources = wm831x_ldo9_resources,
1238 .name = "wm831x-aldo",
1240 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1241 .resources = wm831x_ldo10_resources,
1244 .name = "wm831x-alive-ldo",
1246 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1247 .resources = wm831x_ldo11_resources,
1250 .name = "wm831x-on",
1251 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1252 .resources = wm831x_on_resources,
1255 .name = "wm831x-power",
1256 .num_resources = ARRAY_SIZE(wm831x_power_resources),
1257 .resources = wm831x_power_resources,
1260 .name = "wm831x-status",
1262 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1263 .resources = wm831x_status1_resources,
1266 .name = "wm831x-status",
1268 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1269 .resources = wm831x_status2_resources,
1272 .name = "wm831x-watchdog",
1273 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1274 .resources = wm831x_wdt_resources,
1278 static const struct mfd_cell wm8320_devs[] = {
1280 .name = "wm831x-backup",
1283 .name = "wm831x-buckv",
1285 .num_resources = ARRAY_SIZE(wm831x_dcdc1_resources),
1286 .resources = wm831x_dcdc1_resources,
1289 .name = "wm831x-buckv",
1291 .num_resources = ARRAY_SIZE(wm831x_dcdc2_resources),
1292 .resources = wm831x_dcdc2_resources,
1295 .name = "wm831x-buckp",
1297 .num_resources = ARRAY_SIZE(wm831x_dcdc3_resources),
1298 .resources = wm831x_dcdc3_resources,
1301 .name = "wm831x-buckp",
1303 .num_resources = ARRAY_SIZE(wm8320_dcdc4_buck_resources),
1304 .resources = wm8320_dcdc4_buck_resources,
1307 .name = "wm831x-clk",
1310 .name = "wm831x-gpio",
1311 .num_resources = ARRAY_SIZE(wm831x_gpio_resources),
1312 .resources = wm831x_gpio_resources,
1315 .name = "wm831x-hwmon",
1318 .name = "wm831x-ldo",
1320 .num_resources = ARRAY_SIZE(wm831x_ldo1_resources),
1321 .resources = wm831x_ldo1_resources,
1324 .name = "wm831x-ldo",
1326 .num_resources = ARRAY_SIZE(wm831x_ldo2_resources),
1327 .resources = wm831x_ldo2_resources,
1330 .name = "wm831x-ldo",
1332 .num_resources = ARRAY_SIZE(wm831x_ldo3_resources),
1333 .resources = wm831x_ldo3_resources,
1336 .name = "wm831x-ldo",
1338 .num_resources = ARRAY_SIZE(wm831x_ldo4_resources),
1339 .resources = wm831x_ldo4_resources,
1342 .name = "wm831x-ldo",
1344 .num_resources = ARRAY_SIZE(wm831x_ldo5_resources),
1345 .resources = wm831x_ldo5_resources,
1348 .name = "wm831x-ldo",
1350 .num_resources = ARRAY_SIZE(wm831x_ldo6_resources),
1351 .resources = wm831x_ldo6_resources,
1354 .name = "wm831x-aldo",
1356 .num_resources = ARRAY_SIZE(wm831x_ldo7_resources),
1357 .resources = wm831x_ldo7_resources,
1360 .name = "wm831x-aldo",
1362 .num_resources = ARRAY_SIZE(wm831x_ldo8_resources),
1363 .resources = wm831x_ldo8_resources,
1366 .name = "wm831x-aldo",
1368 .num_resources = ARRAY_SIZE(wm831x_ldo9_resources),
1369 .resources = wm831x_ldo9_resources,
1372 .name = "wm831x-aldo",
1374 .num_resources = ARRAY_SIZE(wm831x_ldo10_resources),
1375 .resources = wm831x_ldo10_resources,
1378 .name = "wm831x-alive-ldo",
1380 .num_resources = ARRAY_SIZE(wm831x_ldo11_resources),
1381 .resources = wm831x_ldo11_resources,
1384 .name = "wm831x-on",
1385 .num_resources = ARRAY_SIZE(wm831x_on_resources),
1386 .resources = wm831x_on_resources,
1389 .name = "wm831x-status",
1391 .num_resources = ARRAY_SIZE(wm831x_status1_resources),
1392 .resources = wm831x_status1_resources,
1395 .name = "wm831x-status",
1397 .num_resources = ARRAY_SIZE(wm831x_status2_resources),
1398 .resources = wm831x_status2_resources,
1401 .name = "wm831x-watchdog",
1402 .num_resources = ARRAY_SIZE(wm831x_wdt_resources),
1403 .resources = wm831x_wdt_resources,
1407 static const struct mfd_cell touch_devs[] = {
1409 .name = "wm831x-touch",
1410 .num_resources = ARRAY_SIZE(wm831x_touch_resources),
1411 .resources = wm831x_touch_resources,
1415 static const struct mfd_cell rtc_devs[] = {
1417 .name = "wm831x-rtc",
1418 .num_resources = ARRAY_SIZE(wm831x_rtc_resources),
1419 .resources = wm831x_rtc_resources,
1423 static const struct mfd_cell backlight_devs[] = {
1425 .name = "wm831x-backlight",
1429 struct regmap_config wm831x_regmap_config = {
1433 .cache_type = REGCACHE_RBTREE,
1435 .max_register = WM831X_DBE_CHECK_DATA,
1436 .readable_reg = wm831x_reg_readable,
1437 .writeable_reg = wm831x_reg_writeable,
1438 .volatile_reg = wm831x_reg_volatile,
1440 EXPORT_SYMBOL_GPL(wm831x_regmap_config);
1442 const struct of_device_id wm831x_of_match[] = {
1443 { .compatible = "wlf,wm8310", .data = (void *)WM8310 },
1444 { .compatible = "wlf,wm8311", .data = (void *)WM8311 },
1445 { .compatible = "wlf,wm8312", .data = (void *)WM8312 },
1446 { .compatible = "wlf,wm8320", .data = (void *)WM8320 },
1447 { .compatible = "wlf,wm8321", .data = (void *)WM8321 },
1448 { .compatible = "wlf,wm8325", .data = (void *)WM8325 },
1449 { .compatible = "wlf,wm8326", .data = (void *)WM8326 },
1452 EXPORT_SYMBOL_GPL(wm831x_of_match);
1455 * Instantiate the generic non-control parts of the device.
1457 int wm831x_device_init(struct wm831x *wm831x, int irq)
1459 struct wm831x_pdata *pdata = &wm831x->pdata;
1460 int rev, wm831x_num;
1461 enum wm831x_parent parent;
1464 mutex_init(&wm831x->io_lock);
1465 mutex_init(&wm831x->key_lock);
1466 dev_set_drvdata(wm831x->dev, wm831x);
1468 wm831x->soft_shutdown = pdata->soft_shutdown;
1470 ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
1472 dev_err(wm831x->dev, "Failed to read parent ID: %d\n", ret);
1480 dev_err(wm831x->dev, "Device is not a WM831x: ID %x\n", ret);
1485 ret = wm831x_reg_read(wm831x, WM831X_REVISION);
1487 dev_err(wm831x->dev, "Failed to read revision: %d\n", ret);
1490 rev = (ret & WM831X_PARENT_REV_MASK) >> WM831X_PARENT_REV_SHIFT;
1492 ret = wm831x_reg_read(wm831x, WM831X_RESET_ID);
1494 dev_err(wm831x->dev, "Failed to read device ID: %d\n", ret);
1498 /* Some engineering samples do not have the ID set, rely on
1499 * the device being registered correctly.
1502 dev_info(wm831x->dev, "Device is an engineering sample\n");
1509 wm831x->num_gpio = 16;
1510 wm831x->charger_irq_wake = 1;
1512 wm831x->has_gpio_ena = 1;
1513 wm831x->has_cs_sts = 1;
1516 dev_info(wm831x->dev, "WM8310 revision %c\n", 'A' + rev);
1521 wm831x->num_gpio = 16;
1522 wm831x->charger_irq_wake = 1;
1524 wm831x->has_gpio_ena = 1;
1525 wm831x->has_cs_sts = 1;
1528 dev_info(wm831x->dev, "WM8311 revision %c\n", 'A' + rev);
1533 wm831x->num_gpio = 16;
1534 wm831x->charger_irq_wake = 1;
1536 wm831x->has_gpio_ena = 1;
1537 wm831x->has_cs_sts = 1;
1540 dev_info(wm831x->dev, "WM8312 revision %c\n", 'A' + rev);
1545 wm831x->num_gpio = 12;
1546 dev_info(wm831x->dev, "WM8320 revision %c\n", 'A' + rev);
1551 wm831x->num_gpio = 12;
1552 dev_info(wm831x->dev, "WM8321 revision %c\n", 'A' + rev);
1557 wm831x->num_gpio = 12;
1558 dev_info(wm831x->dev, "WM8325 revision %c\n", 'A' + rev);
1563 wm831x->num_gpio = 12;
1564 dev_info(wm831x->dev, "WM8326 revision %c\n", 'A' + rev);
1568 dev_err(wm831x->dev, "Unknown WM831x device %04x\n", ret);
1573 /* This will need revisiting in future but is OK for all
1576 if (parent != wm831x->type)
1577 dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
1580 /* Bootstrap the user key */
1581 ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);
1583 dev_err(wm831x->dev, "Failed to read security key: %d\n", ret);
1587 dev_warn(wm831x->dev, "Security key had non-zero value %x\n",
1589 wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, 0);
1593 if (pdata->pre_init) {
1594 ret = pdata->pre_init(wm831x);
1596 dev_err(wm831x->dev, "pre_init() failed: %d\n", ret);
1601 for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
1602 if (!pdata->gpio_defaults[i])
1605 wm831x_reg_write(wm831x,
1606 WM831X_GPIO1_CONTROL + i,
1607 pdata->gpio_defaults[i] & 0xffff);
1610 /* Multiply by 10 as we have many subdevices of the same type */
1611 if (pdata->wm831x_num)
1612 wm831x_num = pdata->wm831x_num * 10;
1616 ret = wm831x_irq_init(wm831x, irq);
1620 wm831x_auxadc_init(wm831x);
1622 /* The core device is up, instantiate the subdevices. */
1625 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1626 wm8310_devs, ARRAY_SIZE(wm8310_devs),
1631 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1632 wm8311_devs, ARRAY_SIZE(wm8311_devs),
1634 if (!pdata->disable_touch)
1635 mfd_add_devices(wm831x->dev, wm831x_num,
1636 touch_devs, ARRAY_SIZE(touch_devs),
1641 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1642 wm8312_devs, ARRAY_SIZE(wm8312_devs),
1644 if (!pdata->disable_touch)
1645 mfd_add_devices(wm831x->dev, wm831x_num,
1646 touch_devs, ARRAY_SIZE(touch_devs),
1654 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1655 wm8320_devs, ARRAY_SIZE(wm8320_devs),
1660 /* If this happens the bus probe function is buggy */
1665 dev_err(wm831x->dev, "Failed to add children\n");
1669 /* The RTC can only be used if the 32.768kHz crystal is
1670 * enabled; this can't be controlled by software at runtime.
1672 ret = wm831x_reg_read(wm831x, WM831X_CLOCK_CONTROL_2);
1674 dev_err(wm831x->dev, "Failed to read clock status: %d\n", ret);
1678 if (ret & WM831X_XTAL_ENA) {
1679 ret = mfd_add_devices(wm831x->dev, wm831x_num,
1680 rtc_devs, ARRAY_SIZE(rtc_devs),
1683 dev_err(wm831x->dev, "Failed to add RTC: %d\n", ret);
1687 dev_info(wm831x->dev, "32.768kHz clock disabled, no RTC\n");
1690 if (pdata->backlight) {
1691 /* Treat errors as non-critical */
1692 ret = mfd_add_devices(wm831x->dev, wm831x_num, backlight_devs,
1693 ARRAY_SIZE(backlight_devs), NULL,
1696 dev_err(wm831x->dev, "Failed to add backlight: %d\n",
1700 wm831x_otp_init(wm831x);
1702 if (pdata->post_init) {
1703 ret = pdata->post_init(wm831x);
1705 dev_err(wm831x->dev, "post_init() failed: %d\n", ret);
1713 wm831x_irq_exit(wm831x);
1715 mfd_remove_devices(wm831x->dev);
1719 int wm831x_device_suspend(struct wm831x *wm831x)
1723 /* If the charger IRQs are a wake source then make sure we ack
1724 * them even if they're not actively being used (eg, no power
1725 * driver or no IRQ line wired up) then acknowledge the
1726 * interrupts otherwise suspend won't last very long.
1728 if (wm831x->charger_irq_wake) {
1729 reg = wm831x_reg_read(wm831x, WM831X_INTERRUPT_STATUS_2_MASK);
1731 mask = WM831X_CHG_BATT_HOT_EINT |
1732 WM831X_CHG_BATT_COLD_EINT |
1733 WM831X_CHG_BATT_FAIL_EINT |
1734 WM831X_CHG_OV_EINT | WM831X_CHG_END_EINT |
1735 WM831X_CHG_TO_EINT | WM831X_CHG_MODE_EINT |
1736 WM831X_CHG_START_EINT;
1738 /* If any of the interrupts are masked read the statuses */
1740 reg = wm831x_reg_read(wm831x,
1741 WM831X_INTERRUPT_STATUS_2);
1744 dev_info(wm831x->dev,
1745 "Acknowledging masked charger IRQs: %x\n",
1747 wm831x_reg_write(wm831x, WM831X_INTERRUPT_STATUS_2,
1755 void wm831x_device_shutdown(struct wm831x *wm831x)
1757 if (wm831x->soft_shutdown) {
1758 dev_info(wm831x->dev, "Initiating shutdown...\n");
1759 wm831x_set_bits(wm831x, WM831X_POWER_STATE, WM831X_CHIP_ON, 0);
1762 EXPORT_SYMBOL_GPL(wm831x_device_shutdown);