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 | |
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 | */ |
119 | void wm831x_reg_lock(struct wm831x *wm831x) |
120 | { |
121 | int ret; |
122 | |
123 | ret = wm831x_reg_write(wm831x, WM831X_SECURITY_KEY, val: 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(lock: &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 | */ |
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, val: 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(lock: &wm831x->io_lock); |
160 | } |
161 | |
162 | return ret; |
163 | } |
164 | EXPORT_SYMBOL_GPL(wm831x_reg_unlock); |
165 | |
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 | |
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 | |
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 | */ |
518 | int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg) |
519 | { |
520 | unsigned int val; |
521 | int ret; |
522 | |
523 | ret = regmap_read(map: wm831x->regmap, reg, val: &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 | */ |
540 | int wm831x_bulk_read(struct wm831x *wm831x, unsigned short reg, |
541 | int count, u16 *buf) |
542 | { |
543 | return regmap_bulk_read(map: wm831x->regmap, reg, val: buf, val_count: count); |
544 | } |
545 | EXPORT_SYMBOL_GPL(wm831x_bulk_read); |
546 | |
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(map: wm831x->regmap, reg: reg + i, val: 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 | */ |
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, bytes: 2, src: &val); |
585 | |
586 | mutex_unlock(lock: &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 | */ |
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(map: wm831x->regmap, reg, mask, val); |
609 | else |
610 | ret = -EPERM; |
611 | |
612 | mutex_unlock(lock: &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 | */ |
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(dev: wm831x->dev, data: 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(parent: wm831x->dev, id: wm831x_num, |
1625 | cells: wm8310_devs, ARRAY_SIZE(wm8310_devs), |
1626 | NULL, irq_base: 0, NULL); |
1627 | break; |
1628 | |
1629 | case WM8311: |
1630 | ret = mfd_add_devices(parent: wm831x->dev, id: wm831x_num, |
1631 | cells: wm8311_devs, ARRAY_SIZE(wm8311_devs), |
1632 | NULL, irq_base: 0, NULL); |
1633 | if (!pdata->disable_touch) |
1634 | mfd_add_devices(parent: wm831x->dev, id: wm831x_num, |
1635 | cells: touch_devs, ARRAY_SIZE(touch_devs), |
1636 | NULL, irq_base: 0, NULL); |
1637 | break; |
1638 | |
1639 | case WM8312: |
1640 | ret = mfd_add_devices(parent: wm831x->dev, id: wm831x_num, |
1641 | cells: wm8312_devs, ARRAY_SIZE(wm8312_devs), |
1642 | NULL, irq_base: 0, NULL); |
1643 | if (!pdata->disable_touch) |
1644 | mfd_add_devices(parent: wm831x->dev, id: wm831x_num, |
1645 | cells: touch_devs, ARRAY_SIZE(touch_devs), |
1646 | NULL, irq_base: 0, NULL); |
1647 | break; |
1648 | |
1649 | case WM8320: |
1650 | case WM8321: |
1651 | case WM8325: |
1652 | case WM8326: |
1653 | ret = mfd_add_devices(parent: wm831x->dev, id: wm831x_num, |
1654 | cells: wm8320_devs, ARRAY_SIZE(wm8320_devs), |
1655 | NULL, irq_base: 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(parent: wm831x->dev, id: wm831x_num, |
1679 | cells: rtc_devs, ARRAY_SIZE(rtc_devs), |
1680 | NULL, irq_base: 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(parent: wm831x->dev, id: wm831x_num, cells: backlight_devs, |
1692 | ARRAY_SIZE(backlight_devs), NULL, |
1693 | irq_base: 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(parent: wm831x->dev); |
1715 | return ret; |
1716 | } |
1717 | |
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 | |
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 | |