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gerrit-public.fairphone.software / kernel / msm / ccdc4f198193eb4956b8dbc00745270525c4cd6e / . / drivers / regulator / wm8350-regulator.c
blob: 7aa35248181bd4b021e5d638343e1bfd57459030 [file] [log] [blame]
Mark Brownda091552008-10-10 15:58:15 +0100[diff] [blame]1/*
2 * wm8350.c -- Voltage and current regulation for the Wolfson WM8350 PMIC
3 *
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
5 *
6 * Author: Liam Girdwood
7 * linux@wolfsonmicro.com
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/init.h>
18#include <linux/bitops.h>
19#include <linux/err.h>
20#include <linux/i2c.h>
21#include <linux/mfd/wm8350/core.h>
22#include <linux/mfd/wm8350/pmic.h>
23#include <linux/platform_device.h>
24#include <linux/regulator/driver.h>
25#include <linux/regulator/machine.h>
26
27/* Microamps */
28static const int isink_cur[] = {
29 4,
30 5,
31 6,
32 7,
33 8,
34 10,
35 11,
36 14,
37 16,
38 19,
39 23,
40 27,
41 32,
42 39,
43 46,
44 54,
45 65,
46 77,
47 92,
48 109,
49 130,
50 154,
51 183,
52 218,
53 259,
54 308,
55 367,
56 436,
57 518,
58 616,
59 733,
60 872,
61 1037,
62 1233,
63 1466,
64 1744,
65 2073,
66 2466,
67 2933,
68 3487,
69 4147,
70 4932,
71 5865,
72 6975,
73 8294,
74 9864,
75 11730,
76 13949,
77 16589,
78 19728,
79 23460,
80 27899,
81 33178,
82 39455,
83 46920,
84 55798,
85 66355,
86 78910,
87 93840,
88 111596,
89 132710,
90 157820,
91 187681,
92 223191
93};
94
95static int get_isink_val(int min_uA, int max_uA, u16 *setting)
96{
97 int i;
98
99 for (i = ARRAY_SIZE(isink_cur) - 1; i >= 0; i--) {
100 if (min_uA <= isink_cur[i] && max_uA >= isink_cur[i]) {
101 *setting = i;
102 return 0;
103 }
104 }
105 return -EINVAL;
106}
107
108static inline int wm8350_ldo_val_to_mvolts(unsigned int val)
109{
110 if (val < 16)
111 return (val * 50) + 900;
112 else
113 return ((val - 16) * 100) + 1800;
114
115}
116
117static inline unsigned int wm8350_ldo_mvolts_to_val(int mV)
118{
119 if (mV < 1800)
120 return (mV - 900) / 50;
121 else
122 return ((mV - 1800) / 100) + 16;
123}
124
125static inline int wm8350_dcdc_val_to_mvolts(unsigned int val)
126{
127 return (val * 25) + 850;
128}
129
130static inline unsigned int wm8350_dcdc_mvolts_to_val(int mV)
131{
132 return (mV - 850) / 25;
133}
134
135static int wm8350_isink_set_current(struct regulator_dev *rdev, int min_uA,
136 int max_uA)
137{
138 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
139 int isink = rdev_get_id(rdev);
140 u16 val, setting;
141 int ret;
142
143 ret = get_isink_val(min_uA, max_uA, &setting);
144 if (ret != 0)
145 return ret;
146
147 switch (isink) {
148 case WM8350_ISINK_A:
149 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
150 ~WM8350_CS1_ISEL_MASK;
151 wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_A,
152 val | setting);
153 break;
154 case WM8350_ISINK_B:
155 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
156 ~WM8350_CS1_ISEL_MASK;
157 wm8350_reg_write(wm8350, WM8350_CURRENT_SINK_DRIVER_B,
158 val | setting);
159 break;
160 default:
161 return -EINVAL;
162 }
163
164 return 0;
165}
166
167static int wm8350_isink_get_current(struct regulator_dev *rdev)
168{
169 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
170 int isink = rdev_get_id(rdev);
171 u16 val;
172
173 switch (isink) {
174 case WM8350_ISINK_A:
175 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
176 WM8350_CS1_ISEL_MASK;
177 break;
178 case WM8350_ISINK_B:
179 val = wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
180 WM8350_CS1_ISEL_MASK;
181 break;
182 default:
183 return 0;
184 }
185
186 return (isink_cur[val] + 50) / 100;
187}
188
189/* turn on ISINK followed by DCDC */
190static int wm8350_isink_enable(struct regulator_dev *rdev)
191{
192 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
193 int isink = rdev_get_id(rdev);
194
195 switch (isink) {
196 case WM8350_ISINK_A:
197 switch (wm8350->pmic.isink_A_dcdc) {
198 case WM8350_DCDC_2:
199 case WM8350_DCDC_5:
200 wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7,
201 WM8350_CS1_ENA);
202 wm8350_set_bits(wm8350, WM8350_CSA_FLASH_CONTROL,
203 WM8350_CS1_DRIVE);
204 wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
205 1 << (wm8350->pmic.isink_A_dcdc -
206 WM8350_DCDC_1));
207 break;
208 default:
209 return -EINVAL;
210 }
211 break;
212 case WM8350_ISINK_B:
213 switch (wm8350->pmic.isink_B_dcdc) {
214 case WM8350_DCDC_2:
215 case WM8350_DCDC_5:
216 wm8350_set_bits(wm8350, WM8350_POWER_MGMT_7,
217 WM8350_CS2_ENA);
218 wm8350_set_bits(wm8350, WM8350_CSB_FLASH_CONTROL,
219 WM8350_CS2_DRIVE);
220 wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
221 1 << (wm8350->pmic.isink_B_dcdc -
222 WM8350_DCDC_1));
223 break;
224 default:
225 return -EINVAL;
226 }
227 break;
228 default:
229 return -EINVAL;
230 }
231 return 0;
232}
233
234static int wm8350_isink_disable(struct regulator_dev *rdev)
235{
236 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
237 int isink = rdev_get_id(rdev);
238
239 switch (isink) {
240 case WM8350_ISINK_A:
241 switch (wm8350->pmic.isink_A_dcdc) {
242 case WM8350_DCDC_2:
243 case WM8350_DCDC_5:
244 wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
245 1 << (wm8350->pmic.isink_A_dcdc -
246 WM8350_DCDC_1));
247 wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7,
248 WM8350_CS1_ENA);
249 break;
250 default:
251 return -EINVAL;
252 }
253 break;
254 case WM8350_ISINK_B:
255 switch (wm8350->pmic.isink_B_dcdc) {
256 case WM8350_DCDC_2:
257 case WM8350_DCDC_5:
258 wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED,
259 1 << (wm8350->pmic.isink_B_dcdc -
260 WM8350_DCDC_1));
261 wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_7,
262 WM8350_CS2_ENA);
263 break;
264 default:
265 return -EINVAL;
266 }
267 break;
268 default:
269 return -EINVAL;
270 }
271 return 0;
272}
273
274static int wm8350_isink_is_enabled(struct regulator_dev *rdev)
275{
276 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
277 int isink = rdev_get_id(rdev);
278
279 switch (isink) {
280 case WM8350_ISINK_A:
281 return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_A) &
282 0x8000;
283 case WM8350_ISINK_B:
284 return wm8350_reg_read(wm8350, WM8350_CURRENT_SINK_DRIVER_B) &
285 0x8000;
286 }
287 return -EINVAL;
288}
289
290int wm8350_isink_set_flash(struct wm8350 *wm8350, int isink, u16 mode,
291 u16 trigger, u16 duration, u16 on_ramp, u16 off_ramp,
292 u16 drive)
293{
294 switch (isink) {
295 case WM8350_ISINK_A:
296 wm8350_reg_write(wm8350, WM8350_CSA_FLASH_CONTROL,
297 (mode ? WM8350_CS1_FLASH_MODE : 0) |
298 (trigger ? WM8350_CS1_TRIGSRC : 0) |
299 duration | on_ramp | off_ramp | drive);
300 break;
301 case WM8350_ISINK_B:
302 wm8350_reg_write(wm8350, WM8350_CSB_FLASH_CONTROL,
303 (mode ? WM8350_CS2_FLASH_MODE : 0) |
304 (trigger ? WM8350_CS2_TRIGSRC : 0) |
305 duration | on_ramp | off_ramp | drive);
306 break;
307 default:
308 return -EINVAL;
309 }
310 return 0;
311}
312EXPORT_SYMBOL_GPL(wm8350_isink_set_flash);
313
314static int wm8350_dcdc_set_voltage(struct regulator_dev *rdev, int min_uV,
315 int max_uV)
316{
317 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
318 int volt_reg, dcdc = rdev_get_id(rdev), mV,
319 min_mV = min_uV / 1000, max_mV = max_uV / 1000;
320 u16 val;
321
322 if (min_mV < 850 || min_mV > 4025)
323 return -EINVAL;
324 if (max_mV < 850 || max_mV > 4025)
325 return -EINVAL;
326
327 /* step size is 25mV */
328 mV = (min_mV - 826) / 25;
329 if (wm8350_dcdc_val_to_mvolts(mV) > max_mV)
330 return -EINVAL;
331 BUG_ON(wm8350_dcdc_val_to_mvolts(mV) < min_mV);
332
333 switch (dcdc) {
334 case WM8350_DCDC_1:
335 volt_reg = WM8350_DCDC1_CONTROL;
336 break;
337 case WM8350_DCDC_3:
338 volt_reg = WM8350_DCDC3_CONTROL;
339 break;
340 case WM8350_DCDC_4:
341 volt_reg = WM8350_DCDC4_CONTROL;
342 break;
343 case WM8350_DCDC_6:
344 volt_reg = WM8350_DCDC6_CONTROL;
345 break;
346 case WM8350_DCDC_2:
347 case WM8350_DCDC_5:
348 default:
349 return -EINVAL;
350 }
351
352 /* all DCDCs have same mV bits */
353 val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK;
354 wm8350_reg_write(wm8350, volt_reg, val | mV);
355 return 0;
356}
357
358static int wm8350_dcdc_get_voltage(struct regulator_dev *rdev)
359{
360 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
361 int volt_reg, dcdc = rdev_get_id(rdev);
362 u16 val;
363
364 switch (dcdc) {
365 case WM8350_DCDC_1:
366 volt_reg = WM8350_DCDC1_CONTROL;
367 break;
368 case WM8350_DCDC_3:
369 volt_reg = WM8350_DCDC3_CONTROL;
370 break;
371 case WM8350_DCDC_4:
372 volt_reg = WM8350_DCDC4_CONTROL;
373 break;
374 case WM8350_DCDC_6:
375 volt_reg = WM8350_DCDC6_CONTROL;
376 break;
377 case WM8350_DCDC_2:
378 case WM8350_DCDC_5:
379 default:
380 return -EINVAL;
381 }
382
383 /* all DCDCs have same mV bits */
384 val = wm8350_reg_read(wm8350, volt_reg) & WM8350_DC1_VSEL_MASK;
385 return wm8350_dcdc_val_to_mvolts(val) * 1000;
386}
387
388static int wm8350_dcdc_set_suspend_voltage(struct regulator_dev *rdev, int uV)
389{
390 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
391 int volt_reg, mV = uV / 1000, dcdc = rdev_get_id(rdev);
392 u16 val;
393
394 dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, dcdc, mV);
395
396 if (mV && (mV < 850 || mV > 4025)) {
397 dev_err(wm8350->dev,
398 "DCDC%d suspend voltage %d mV out of range\n",
399 dcdc, mV);
400 return -EINVAL;
401 }
402 if (mV == 0)
403 mV = 850;
404
405 switch (dcdc) {
406 case WM8350_DCDC_1:
407 volt_reg = WM8350_DCDC1_LOW_POWER;
408 break;
409 case WM8350_DCDC_3:
410 volt_reg = WM8350_DCDC3_LOW_POWER;
411 break;
412 case WM8350_DCDC_4:
413 volt_reg = WM8350_DCDC4_LOW_POWER;
414 break;
415 case WM8350_DCDC_6:
416 volt_reg = WM8350_DCDC6_LOW_POWER;
417 break;
418 case WM8350_DCDC_2:
419 case WM8350_DCDC_5:
420 default:
421 return -EINVAL;
422 }
423
424 /* all DCDCs have same mV bits */
425 val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_DC1_VSEL_MASK;
426 wm8350_reg_write(wm8350, volt_reg,
427 val | wm8350_dcdc_mvolts_to_val(mV));
428 return 0;
429}
430
431static int wm8350_dcdc_set_suspend_enable(struct regulator_dev *rdev)
432{
433 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
434 int dcdc = rdev_get_id(rdev);
435 u16 val;
436
437 switch (dcdc) {
438 case WM8350_DCDC_1:
439 val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER)
440 & ~WM8350_DCDC_HIB_MODE_MASK;
441 wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER,
442 wm8350->pmic.dcdc1_hib_mode);
443 break;
444 case WM8350_DCDC_3:
445 val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER)
446 & ~WM8350_DCDC_HIB_MODE_MASK;
447 wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER,
448 wm8350->pmic.dcdc3_hib_mode);
449 break;
450 case WM8350_DCDC_4:
451 val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER)
452 & ~WM8350_DCDC_HIB_MODE_MASK;
453 wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER,
454 wm8350->pmic.dcdc4_hib_mode);
455 break;
456 case WM8350_DCDC_6:
457 val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER)
458 & ~WM8350_DCDC_HIB_MODE_MASK;
459 wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER,
460 wm8350->pmic.dcdc6_hib_mode);
461 break;
462 case WM8350_DCDC_2:
463 case WM8350_DCDC_5:
464 default:
465 return -EINVAL;
466 }
467
468 return 0;
469}
470
471static int wm8350_dcdc_set_suspend_disable(struct regulator_dev *rdev)
472{
473 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
474 int dcdc = rdev_get_id(rdev);
475 u16 val;
476
477 switch (dcdc) {
478 case WM8350_DCDC_1:
479 val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
480 wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
481 wm8350_reg_write(wm8350, WM8350_DCDC1_LOW_POWER,
482 WM8350_DCDC_HIB_MODE_DIS);
483 break;
484 case WM8350_DCDC_3:
485 val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
486 wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
487 wm8350_reg_write(wm8350, WM8350_DCDC3_LOW_POWER,
488 WM8350_DCDC_HIB_MODE_DIS);
489 break;
490 case WM8350_DCDC_4:
491 val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
492 wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
493 wm8350_reg_write(wm8350, WM8350_DCDC4_LOW_POWER,
494 WM8350_DCDC_HIB_MODE_DIS);
495 break;
496 case WM8350_DCDC_6:
497 val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
498 wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
499 wm8350_reg_write(wm8350, WM8350_DCDC6_LOW_POWER,
500 WM8350_DCDC_HIB_MODE_DIS);
501 break;
502 case WM8350_DCDC_2:
503 case WM8350_DCDC_5:
504 default:
505 return -EINVAL;
506 }
507
508 return 0;
509}
510
511static int wm8350_dcdc25_set_suspend_enable(struct regulator_dev *rdev)
512{
513 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
514 int dcdc = rdev_get_id(rdev);
515 u16 val;
516
517 switch (dcdc) {
518 case WM8350_DCDC_2:
519 val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
520 & ~WM8350_DC2_HIB_MODE_MASK;
521 wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
522 WM8350_DC2_HIB_MODE_ACTIVE);
523 break;
524 case WM8350_DCDC_5:
525 val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
526 & ~WM8350_DC2_HIB_MODE_MASK;
527 wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
528 WM8350_DC5_HIB_MODE_ACTIVE);
529 break;
530 default:
531 return -EINVAL;
532 }
533 return 0;
534}
535
536static int wm8350_dcdc25_set_suspend_disable(struct regulator_dev *rdev)
537{
538 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
539 int dcdc = rdev_get_id(rdev);
540 u16 val;
541
542 switch (dcdc) {
543 case WM8350_DCDC_2:
544 val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
545 & ~WM8350_DC2_HIB_MODE_MASK;
546 wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
547 WM8350_DC2_HIB_MODE_DISABLE);
548 break;
549 case WM8350_DCDC_5:
550 val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
551 & ~WM8350_DC2_HIB_MODE_MASK;
552 wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
553 WM8350_DC2_HIB_MODE_DISABLE);
554 break;
555 default:
556 return -EINVAL;
557 }
558 return 0;
559}
560
561static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev,
562 unsigned int mode)
563{
564 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
565 int dcdc = rdev_get_id(rdev);
566 u16 *hib_mode;
567
568 switch (dcdc) {
569 case WM8350_DCDC_1:
570 hib_mode = &wm8350->pmic.dcdc1_hib_mode;
571 break;
572 case WM8350_DCDC_3:
573 hib_mode = &wm8350->pmic.dcdc3_hib_mode;
574 break;
575 case WM8350_DCDC_4:
576 hib_mode = &wm8350->pmic.dcdc4_hib_mode;
577 break;
578 case WM8350_DCDC_6:
579 hib_mode = &wm8350->pmic.dcdc6_hib_mode;
580 break;
581 case WM8350_DCDC_2:
582 case WM8350_DCDC_5:
583 default:
584 return -EINVAL;
585 }
586
587 switch (mode) {
588 case REGULATOR_MODE_NORMAL:
589 *hib_mode = WM8350_DCDC_HIB_MODE_IMAGE;
590 break;
591 case REGULATOR_MODE_IDLE:
592 *hib_mode = WM8350_DCDC_HIB_MODE_STANDBY;
593 break;
594 case REGULATOR_MODE_STANDBY:
595 *hib_mode = WM8350_DCDC_HIB_MODE_LDO_IM;
596 break;
597 default:
598 return -EINVAL;
599 }
600
601 return 0;
602}
603
604static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV)
605{
606 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
607 int volt_reg, mV = uV / 1000, ldo = rdev_get_id(rdev);
608 u16 val;
609
610 dev_dbg(wm8350->dev, "%s %d mV %d\n", __func__, ldo, mV);
611
612 if (mV < 900 || mV > 3300) {
613 dev_err(wm8350->dev, "LDO%d voltage %d mV out of range\n",
614 ldo, mV);
615 return -EINVAL;
616 }
617
618 switch (ldo) {
619 case WM8350_LDO_1:
620 volt_reg = WM8350_LDO1_LOW_POWER;
621 break;
622 case WM8350_LDO_2:
623 volt_reg = WM8350_LDO2_LOW_POWER;
624 break;
625 case WM8350_LDO_3:
626 volt_reg = WM8350_LDO3_LOW_POWER;
627 break;
628 case WM8350_LDO_4:
629 volt_reg = WM8350_LDO4_LOW_POWER;
630 break;
631 default:
632 return -EINVAL;
633 }
634
635 /* all LDOs have same mV bits */
636 val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK;
637 wm8350_reg_write(wm8350, volt_reg,
638 val | wm8350_ldo_mvolts_to_val(mV));
639 return 0;
640}
641
642static int wm8350_ldo_set_suspend_enable(struct regulator_dev *rdev)
643{
644 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
645 int volt_reg, ldo = rdev_get_id(rdev);
646 u16 val;
647
648 switch (ldo) {
649 case WM8350_LDO_1:
650 volt_reg = WM8350_LDO1_LOW_POWER;
651 break;
652 case WM8350_LDO_2:
653 volt_reg = WM8350_LDO2_LOW_POWER;
654 break;
655 case WM8350_LDO_3:
656 volt_reg = WM8350_LDO3_LOW_POWER;
657 break;
658 case WM8350_LDO_4:
659 volt_reg = WM8350_LDO4_LOW_POWER;
660 break;
661 default:
662 return -EINVAL;
663 }
664
665 /* all LDOs have same mV bits */
666 val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK;
667 wm8350_reg_write(wm8350, volt_reg, val);
668 return 0;
669}
670
671static int wm8350_ldo_set_suspend_disable(struct regulator_dev *rdev)
672{
673 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
674 int volt_reg, ldo = rdev_get_id(rdev);
675 u16 val;
676
677 switch (ldo) {
678 case WM8350_LDO_1:
679 volt_reg = WM8350_LDO1_LOW_POWER;
680 break;
681 case WM8350_LDO_2:
682 volt_reg = WM8350_LDO2_LOW_POWER;
683 break;
684 case WM8350_LDO_3:
685 volt_reg = WM8350_LDO3_LOW_POWER;
686 break;
687 case WM8350_LDO_4:
688 volt_reg = WM8350_LDO4_LOW_POWER;
689 break;
690 default:
691 return -EINVAL;
692 }
693
694 /* all LDOs have same mV bits */
695 val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_HIB_MODE_MASK;
696 wm8350_reg_write(wm8350, volt_reg, WM8350_LDO1_HIB_MODE_DIS);
697 return 0;
698}
699
700static int wm8350_ldo_set_voltage(struct regulator_dev *rdev, int min_uV,
701 int max_uV)
702{
703 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
704 int volt_reg, ldo = rdev_get_id(rdev), mV, min_mV = min_uV / 1000,
705 max_mV = max_uV / 1000;
706 u16 val;
707
708 if (min_mV < 900 || min_mV > 3300)
709 return -EINVAL;
710 if (max_mV < 900 || max_mV > 3300)
711 return -EINVAL;
712
713 if (min_mV < 1800) {
714 /* step size is 50mV < 1800mV */
715 mV = (min_mV - 851) / 50;
716 if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
717 return -EINVAL;
718 BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
719 } else {
720 /* step size is 100mV > 1800mV */
721 mV = ((min_mV - 1701) / 100) + 16;
722 if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
723 return -EINVAL;
724 BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
725 }
726
727 switch (ldo) {
728 case WM8350_LDO_1:
729 volt_reg = WM8350_LDO1_CONTROL;
730 break;
731 case WM8350_LDO_2:
732 volt_reg = WM8350_LDO2_CONTROL;
733 break;
734 case WM8350_LDO_3:
735 volt_reg = WM8350_LDO3_CONTROL;
736 break;
737 case WM8350_LDO_4:
738 volt_reg = WM8350_LDO4_CONTROL;
739 break;
740 default:
741 return -EINVAL;
742 }
743
744 /* all LDOs have same mV bits */
745 val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK;
746 wm8350_reg_write(wm8350, volt_reg, val | mV);
747 return 0;
748}
749
750static int wm8350_ldo_get_voltage(struct regulator_dev *rdev)
751{
752 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
753 int volt_reg, ldo = rdev_get_id(rdev);
754 u16 val;
755
756 switch (ldo) {
757 case WM8350_LDO_1:
758 volt_reg = WM8350_LDO1_CONTROL;
759 break;
760 case WM8350_LDO_2:
761 volt_reg = WM8350_LDO2_CONTROL;
762 break;
763 case WM8350_LDO_3:
764 volt_reg = WM8350_LDO3_CONTROL;
765 break;
766 case WM8350_LDO_4:
767 volt_reg = WM8350_LDO4_CONTROL;
768 break;
769 default:
770 return -EINVAL;
771 }
772
773 /* all LDOs have same mV bits */
774 val = wm8350_reg_read(wm8350, volt_reg) & WM8350_LDO1_VSEL_MASK;
775 return wm8350_ldo_val_to_mvolts(val) * 1000;
776}
777
778int wm8350_dcdc_set_slot(struct wm8350 *wm8350, int dcdc, u16 start,
779 u16 stop, u16 fault)
780{
781 int slot_reg;
782 u16 val;
783
784 dev_dbg(wm8350->dev, "%s %d start %d stop %d\n",
785 __func__, dcdc, start, stop);
786
787 /* slot valid ? */
788 if (start > 15 || stop > 15)
789 return -EINVAL;
790
791 switch (dcdc) {
792 case WM8350_DCDC_1:
793 slot_reg = WM8350_DCDC1_TIMEOUTS;
794 break;
795 case WM8350_DCDC_2:
796 slot_reg = WM8350_DCDC2_TIMEOUTS;
797 break;
798 case WM8350_DCDC_3:
799 slot_reg = WM8350_DCDC3_TIMEOUTS;
800 break;
801 case WM8350_DCDC_4:
802 slot_reg = WM8350_DCDC4_TIMEOUTS;
803 break;
804 case WM8350_DCDC_5:
805 slot_reg = WM8350_DCDC5_TIMEOUTS;
806 break;
807 case WM8350_DCDC_6:
808 slot_reg = WM8350_DCDC6_TIMEOUTS;
809 break;
810 default:
811 return -EINVAL;
812 }
813
814 val = wm8350_reg_read(wm8350, slot_reg) &
815 ~(WM8350_DC1_ENSLOT_MASK | WM8350_DC1_SDSLOT_MASK |
816 WM8350_DC1_ERRACT_MASK);
817 wm8350_reg_write(wm8350, slot_reg,
818 val | (start << WM8350_DC1_ENSLOT_SHIFT) |
819 (stop << WM8350_DC1_SDSLOT_SHIFT) |
820 (fault << WM8350_DC1_ERRACT_SHIFT));
821
822 return 0;
823}
824EXPORT_SYMBOL_GPL(wm8350_dcdc_set_slot);
825
826int wm8350_ldo_set_slot(struct wm8350 *wm8350, int ldo, u16 start, u16 stop)
827{
828 int slot_reg;
829 u16 val;
830
831 dev_dbg(wm8350->dev, "%s %d start %d stop %d\n",
832 __func__, ldo, start, stop);
833
834 /* slot valid ? */
835 if (start > 15 || stop > 15)
836 return -EINVAL;
837
838 switch (ldo) {
839 case WM8350_LDO_1:
840 slot_reg = WM8350_LDO1_TIMEOUTS;
841 break;
842 case WM8350_LDO_2:
843 slot_reg = WM8350_LDO2_TIMEOUTS;
844 break;
845 case WM8350_LDO_3:
846 slot_reg = WM8350_LDO3_TIMEOUTS;
847 break;
848 case WM8350_LDO_4:
849 slot_reg = WM8350_LDO4_TIMEOUTS;
850 break;
851 default:
852 return -EINVAL;
853 }
854
855 val = wm8350_reg_read(wm8350, slot_reg) & ~WM8350_LDO1_SDSLOT_MASK;
856 wm8350_reg_write(wm8350, slot_reg, val | ((start << 10) | (stop << 6)));
857 return 0;
858}
859EXPORT_SYMBOL_GPL(wm8350_ldo_set_slot);
860
861int wm8350_dcdc25_set_mode(struct wm8350 *wm8350, int dcdc, u16 mode,
862 u16 ilim, u16 ramp, u16 feedback)
863{
864 u16 val;
865
866 dev_dbg(wm8350->dev, "%s %d mode: %s %s\n", __func__, dcdc,
867 mode ? "normal" : "boost", ilim ? "low" : "normal");
868
869 switch (dcdc) {
870 case WM8350_DCDC_2:
871 val = wm8350_reg_read(wm8350, WM8350_DCDC2_CONTROL)
872 & ~(WM8350_DC2_MODE_MASK | WM8350_DC2_ILIM_MASK |
873 WM8350_DC2_RMP_MASK | WM8350_DC2_FBSRC_MASK);
874 wm8350_reg_write(wm8350, WM8350_DCDC2_CONTROL, val |
875 (mode << WM8350_DC2_MODE_SHIFT) |
876 (ilim << WM8350_DC2_ILIM_SHIFT) |
877 (ramp << WM8350_DC2_RMP_SHIFT) |
878 (feedback << WM8350_DC2_FBSRC_SHIFT));
879 break;
880 case WM8350_DCDC_5:
881 val = wm8350_reg_read(wm8350, WM8350_DCDC5_CONTROL)
882 & ~(WM8350_DC5_MODE_MASK | WM8350_DC5_ILIM_MASK |
883 WM8350_DC5_RMP_MASK | WM8350_DC5_FBSRC_MASK);
884 wm8350_reg_write(wm8350, WM8350_DCDC5_CONTROL, val |
885 (mode << WM8350_DC5_MODE_SHIFT) |
886 (ilim << WM8350_DC5_ILIM_SHIFT) |
887 (ramp << WM8350_DC5_RMP_SHIFT) |
888 (feedback << WM8350_DC5_FBSRC_SHIFT));
889 break;
890 default:
891 return -EINVAL;
892 }
893
894 return 0;
895}
896EXPORT_SYMBOL_GPL(wm8350_dcdc25_set_mode);
897
898static int wm8350_dcdc_enable(struct regulator_dev *rdev)
899{
900 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
901 int dcdc = rdev_get_id(rdev);
902 u16 shift;
903
904 if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
905 return -EINVAL;
906
907 shift = dcdc - WM8350_DCDC_1;
908 wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
909 return 0;
910}
911
912static int wm8350_dcdc_disable(struct regulator_dev *rdev)
913{
914 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
915 int dcdc = rdev_get_id(rdev);
916 u16 shift;
917
918 if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
919 return -EINVAL;
920
921 shift = dcdc - WM8350_DCDC_1;
922 wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
923
924 return 0;
925}
926
927static int wm8350_ldo_enable(struct regulator_dev *rdev)
928{
929 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
930 int ldo = rdev_get_id(rdev);
931 u16 shift;
932
933 if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4)
934 return -EINVAL;
935
936 shift = (ldo - WM8350_LDO_1) + 8;
937 wm8350_set_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
938 return 0;
939}
940
941static int wm8350_ldo_disable(struct regulator_dev *rdev)
942{
943 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
944 int ldo = rdev_get_id(rdev);
945 u16 shift;
946
947 if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4)
948 return -EINVAL;
949
950 shift = (ldo - WM8350_LDO_1) + 8;
951 wm8350_clear_bits(wm8350, WM8350_DCDC_LDO_REQUESTED, 1 << shift);
952 return 0;
953}
954
955static int force_continuous_enable(struct wm8350 *wm8350, int dcdc, int enable)
956{
957 int reg = 0, ret;
958
959 switch (dcdc) {
960 case WM8350_DCDC_1:
961 reg = WM8350_DCDC1_FORCE_PWM;
962 break;
963 case WM8350_DCDC_3:
964 reg = WM8350_DCDC3_FORCE_PWM;
965 break;
966 case WM8350_DCDC_4:
967 reg = WM8350_DCDC4_FORCE_PWM;
968 break;
969 case WM8350_DCDC_6:
970 reg = WM8350_DCDC6_FORCE_PWM;
971 break;
972 default:
973 return -EINVAL;
974 }
975
976 if (enable)
977 ret = wm8350_set_bits(wm8350, reg,
978 WM8350_DCDC1_FORCE_PWM_ENA);
979 else
980 ret = wm8350_clear_bits(wm8350, reg,
981 WM8350_DCDC1_FORCE_PWM_ENA);
982 return ret;
983}
984
985static int wm8350_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode)
986{
987 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
988 int dcdc = rdev_get_id(rdev);
989 u16 val;
990
991 if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
992 return -EINVAL;
993
994 if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5)
995 return -EINVAL;
996
997 val = 1 << (dcdc - WM8350_DCDC_1);
998
999 switch (mode) {
1000 case REGULATOR_MODE_FAST:
1001 /* force continuous mode */
1002 wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
1003 wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
1004 force_continuous_enable(wm8350, dcdc, 1);
1005 break;
1006 case REGULATOR_MODE_NORMAL:
1007 /* active / pulse skipping */
1008 wm8350_set_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
1009 wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
1010 force_continuous_enable(wm8350, dcdc, 0);
1011 break;
1012 case REGULATOR_MODE_IDLE:
1013 /* standby mode */
1014 force_continuous_enable(wm8350, dcdc, 0);
1015 wm8350_clear_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
1016 wm8350_clear_bits(wm8350, WM8350_DCDC_ACTIVE_OPTIONS, val);
1017 break;
1018 case REGULATOR_MODE_STANDBY:
1019 /* LDO mode */
1020 force_continuous_enable(wm8350, dcdc, 0);
1021 wm8350_set_bits(wm8350, WM8350_DCDC_SLEEP_OPTIONS, val);
1022 break;
1023 }
1024
1025 return 0;
1026}
1027
1028static unsigned int wm8350_dcdc_get_mode(struct regulator_dev *rdev)
1029{
1030 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
1031 int dcdc = rdev_get_id(rdev);
1032 u16 mask, sleep, active, force;
1033 int mode = REGULATOR_MODE_NORMAL;
1034
1035 if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
1036 return -EINVAL;
1037
1038 if (dcdc == WM8350_DCDC_2 || dcdc == WM8350_DCDC_5)
1039 return -EINVAL;
1040
1041 mask = 1 << (dcdc - WM8350_DCDC_1);
1042 active = wm8350_reg_read(wm8350, WM8350_DCDC_ACTIVE_OPTIONS) & mask;
1043 sleep = wm8350_reg_read(wm8350, WM8350_DCDC_SLEEP_OPTIONS) & mask;
1044 force = wm8350_reg_read(wm8350, WM8350_DCDC1_FORCE_PWM)
1045 & WM8350_DCDC1_FORCE_PWM_ENA;
1046 dev_dbg(wm8350->dev, "mask %x active %x sleep %x force %x",
1047 mask, active, sleep, force);
1048
1049 if (active && !sleep) {
1050 if (force)
1051 mode = REGULATOR_MODE_FAST;
1052 else
1053 mode = REGULATOR_MODE_NORMAL;
1054 } else if (!active && !sleep)
1055 mode = REGULATOR_MODE_IDLE;
1056 else if (!sleep)
1057 mode = REGULATOR_MODE_STANDBY;
1058
1059 return mode;
1060}
1061
1062static unsigned int wm8350_ldo_get_mode(struct regulator_dev *rdev)
1063{
1064 return REGULATOR_MODE_NORMAL;
1065}
1066
1067struct wm8350_dcdc_efficiency {
1068 int uA_load_min;
1069 int uA_load_max;
1070 unsigned int mode;
1071};
1072
1073static const struct wm8350_dcdc_efficiency dcdc1_6_efficiency[] = {
1074 {0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */
1075 {10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */
1076 {100000, 1000000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */
1077 {-1, -1, REGULATOR_MODE_NORMAL},
1078};
1079
1080static const struct wm8350_dcdc_efficiency dcdc3_4_efficiency[] = {
1081 {0, 10000, REGULATOR_MODE_STANDBY}, /* 0 - 10mA - LDO */
1082 {10000, 100000, REGULATOR_MODE_IDLE}, /* 10mA - 100mA - Standby */
1083 {100000, 800000, REGULATOR_MODE_NORMAL}, /* > 100mA - Active */
1084 {-1, -1, REGULATOR_MODE_NORMAL},
1085};
1086
1087static unsigned int get_mode(int uA, const struct wm8350_dcdc_efficiency *eff)
1088{
1089 int i = 0;
1090
1091 while (eff[i].uA_load_min != -1) {
1092 if (uA >= eff[i].uA_load_min && uA <= eff[i].uA_load_max)
1093 return eff[i].mode;
1094 }
1095 return REGULATOR_MODE_NORMAL;
1096}
1097
1098/* Query the regulator for it's most efficient mode @ uV,uA
1099 * WM8350 regulator efficiency is pretty similar over
1100 * different input and output uV.
1101 */
1102static unsigned int wm8350_dcdc_get_optimum_mode(struct regulator_dev *rdev,
1103 int input_uV, int output_uV,
1104 int output_uA)
1105{
1106 int dcdc = rdev_get_id(rdev), mode;
1107
1108 switch (dcdc) {
1109 case WM8350_DCDC_1:
1110 case WM8350_DCDC_6:
1111 mode = get_mode(output_uA, dcdc1_6_efficiency);
1112 break;
1113 case WM8350_DCDC_3:
1114 case WM8350_DCDC_4:
1115 mode = get_mode(output_uA, dcdc3_4_efficiency);
1116 break;
1117 default:
1118 mode = REGULATOR_MODE_NORMAL;
1119 break;
1120 }
1121 return mode;
1122}
1123
1124static int wm8350_dcdc_is_enabled(struct regulator_dev *rdev)
1125{
1126 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
1127 int dcdc = rdev_get_id(rdev), shift;
1128
1129 if (dcdc < WM8350_DCDC_1 || dcdc > WM8350_DCDC_6)
1130 return -EINVAL;
1131
1132 shift = dcdc - WM8350_DCDC_1;
1133 return wm8350_reg_read(wm8350, WM8350_DCDC_LDO_REQUESTED)
1134 & (1 << shift);
1135}
1136
1137static int wm8350_ldo_is_enabled(struct regulator_dev *rdev)
1138{
1139 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
1140 int ldo = rdev_get_id(rdev), shift;
1141
1142 if (ldo < WM8350_LDO_1 || ldo > WM8350_LDO_4)
1143 return -EINVAL;
1144
1145 shift = (ldo - WM8350_LDO_1) + 8;
1146 return wm8350_reg_read(wm8350, WM8350_DCDC_LDO_REQUESTED)
1147 & (1 << shift);
1148}
1149
1150static struct regulator_ops wm8350_dcdc_ops = {
1151 .set_voltage = wm8350_dcdc_set_voltage,
1152 .get_voltage = wm8350_dcdc_get_voltage,
1153 .enable = wm8350_dcdc_enable,
1154 .disable = wm8350_dcdc_disable,
1155 .get_mode = wm8350_dcdc_get_mode,
1156 .set_mode = wm8350_dcdc_set_mode,
1157 .get_optimum_mode = wm8350_dcdc_get_optimum_mode,
1158 .is_enabled = wm8350_dcdc_is_enabled,
1159 .set_suspend_voltage = wm8350_dcdc_set_suspend_voltage,
1160 .set_suspend_enable = wm8350_dcdc_set_suspend_enable,
1161 .set_suspend_disable = wm8350_dcdc_set_suspend_disable,
1162 .set_suspend_mode = wm8350_dcdc_set_suspend_mode,
1163};
1164
1165static struct regulator_ops wm8350_dcdc2_5_ops = {
1166 .enable = wm8350_dcdc_enable,
1167 .disable = wm8350_dcdc_disable,
1168 .is_enabled = wm8350_dcdc_is_enabled,
1169 .set_suspend_enable = wm8350_dcdc25_set_suspend_enable,
1170 .set_suspend_disable = wm8350_dcdc25_set_suspend_disable,
1171};
1172
1173static struct regulator_ops wm8350_ldo_ops = {
1174 .set_voltage = wm8350_ldo_set_voltage,
1175 .get_voltage = wm8350_ldo_get_voltage,
1176 .enable = wm8350_ldo_enable,
1177 .disable = wm8350_ldo_disable,
1178 .is_enabled = wm8350_ldo_is_enabled,
1179 .get_mode = wm8350_ldo_get_mode,
1180 .set_suspend_voltage = wm8350_ldo_set_suspend_voltage,
1181 .set_suspend_enable = wm8350_ldo_set_suspend_enable,
1182 .set_suspend_disable = wm8350_ldo_set_suspend_disable,
1183};
1184
1185static struct regulator_ops wm8350_isink_ops = {
1186 .set_current_limit = wm8350_isink_set_current,
1187 .get_current_limit = wm8350_isink_get_current,
1188 .enable = wm8350_isink_enable,
1189 .disable = wm8350_isink_disable,
1190 .is_enabled = wm8350_isink_is_enabled,
1191};
1192
1193static struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = {
1194 {
1195 .name = "DCDC1",
1196 .id = WM8350_DCDC_1,
1197 .ops = &wm8350_dcdc_ops,
1198 .irq = WM8350_IRQ_UV_DC1,
1199 .type = REGULATOR_VOLTAGE,
1200 .owner = THIS_MODULE,
1201 },
1202 {
1203 .name = "DCDC2",
1204 .id = WM8350_DCDC_2,
1205 .ops = &wm8350_dcdc2_5_ops,
1206 .irq = WM8350_IRQ_UV_DC2,
1207 .type = REGULATOR_VOLTAGE,
1208 .owner = THIS_MODULE,
1209 },
1210 {
1211 .name = "DCDC3",
1212 .id = WM8350_DCDC_3,
1213 .ops = &wm8350_dcdc_ops,
1214 .irq = WM8350_IRQ_UV_DC3,
1215 .type = REGULATOR_VOLTAGE,
1216 .owner = THIS_MODULE,
1217 },
1218 {
1219 .name = "DCDC4",
1220 .id = WM8350_DCDC_4,
1221 .ops = &wm8350_dcdc_ops,
1222 .irq = WM8350_IRQ_UV_DC4,
1223 .type = REGULATOR_VOLTAGE,
1224 .owner = THIS_MODULE,
1225 },
1226 {
1227 .name = "DCDC5",
1228 .id = WM8350_DCDC_5,
1229 .ops = &wm8350_dcdc2_5_ops,
1230 .irq = WM8350_IRQ_UV_DC5,
1231 .type = REGULATOR_VOLTAGE,
1232 .owner = THIS_MODULE,
1233 },
1234 {
1235 .name = "DCDC6",
1236 .id = WM8350_DCDC_6,
1237 .ops = &wm8350_dcdc_ops,
1238 .irq = WM8350_IRQ_UV_DC6,
1239 .type = REGULATOR_VOLTAGE,
1240 .owner = THIS_MODULE,
1241 },
1242 {
1243 .name = "LDO1",
1244 .id = WM8350_LDO_1,
1245 .ops = &wm8350_ldo_ops,
1246 .irq = WM8350_IRQ_UV_LDO1,
1247 .type = REGULATOR_VOLTAGE,
1248 .owner = THIS_MODULE,
1249 },
1250 {
1251 .name = "LDO2",
1252 .id = WM8350_LDO_2,
1253 .ops = &wm8350_ldo_ops,
1254 .irq = WM8350_IRQ_UV_LDO2,
1255 .type = REGULATOR_VOLTAGE,
1256 .owner = THIS_MODULE,
1257 },
1258 {
1259 .name = "LDO3",
1260 .id = WM8350_LDO_3,
1261 .ops = &wm8350_ldo_ops,
1262 .irq = WM8350_IRQ_UV_LDO3,
1263 .type = REGULATOR_VOLTAGE,
1264 .owner = THIS_MODULE,
1265 },
1266 {
1267 .name = "LDO4",
1268 .id = WM8350_LDO_4,
1269 .ops = &wm8350_ldo_ops,
1270 .irq = WM8350_IRQ_UV_LDO4,
1271 .type = REGULATOR_VOLTAGE,
1272 .owner = THIS_MODULE,
1273 },
1274 {
1275 .name = "ISINKA",
1276 .id = WM8350_ISINK_A,
1277 .ops = &wm8350_isink_ops,
1278 .irq = WM8350_IRQ_CS1,
1279 .type = REGULATOR_CURRENT,
1280 .owner = THIS_MODULE,
1281 },
1282 {
1283 .name = "ISINKB",
1284 .id = WM8350_ISINK_B,
1285 .ops = &wm8350_isink_ops,
1286 .irq = WM8350_IRQ_CS2,
1287 .type = REGULATOR_CURRENT,
1288 .owner = THIS_MODULE,
1289 },
1290};
1291
1292static void pmic_uv_handler(struct wm8350 *wm8350, int irq, void *data)
1293{
1294 struct regulator_dev *rdev = (struct regulator_dev *)data;
1295
1296 if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2)
1297 regulator_notifier_call_chain(rdev,
1298 REGULATOR_EVENT_REGULATION_OUT,
1299 wm8350);
1300 else
1301 regulator_notifier_call_chain(rdev,
1302 REGULATOR_EVENT_UNDER_VOLTAGE,
1303 wm8350);
1304}
1305
1306static int wm8350_regulator_probe(struct platform_device *pdev)
1307{
1308 struct wm8350 *wm8350 = dev_get_drvdata(&pdev->dev);
1309 struct regulator_dev *rdev;
1310 int ret;
1311 u16 val;
1312
1313 if (pdev->id < WM8350_DCDC_1 || pdev->id > WM8350_ISINK_B)
1314 return -ENODEV;
1315
1316 /* do any regulatior specific init */
1317 switch (pdev->id) {
1318 case WM8350_DCDC_1:
1319 val = wm8350_reg_read(wm8350, WM8350_DCDC1_LOW_POWER);
1320 wm8350->pmic.dcdc1_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1321 break;
1322 case WM8350_DCDC_3:
1323 val = wm8350_reg_read(wm8350, WM8350_DCDC3_LOW_POWER);
1324 wm8350->pmic.dcdc3_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1325 break;
1326 case WM8350_DCDC_4:
1327 val = wm8350_reg_read(wm8350, WM8350_DCDC4_LOW_POWER);
1328 wm8350->pmic.dcdc4_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1329 break;
1330 case WM8350_DCDC_6:
1331 val = wm8350_reg_read(wm8350, WM8350_DCDC6_LOW_POWER);
1332 wm8350->pmic.dcdc6_hib_mode = val & WM8350_DCDC_HIB_MODE_MASK;
1333 break;
1334 }
1335
1336
1337 /* register regulator */
1338 rdev = regulator_register(&wm8350_reg[pdev->id], &pdev->dev,
1339 dev_get_drvdata(&pdev->dev));
1340 if (IS_ERR(rdev)) {
1341 dev_err(&pdev->dev, "failed to register %s\n",
1342 wm8350_reg[pdev->id].name);
1343 return PTR_ERR(rdev);
1344 }
1345
1346 /* register regulator IRQ */
1347 ret = wm8350_register_irq(wm8350, wm8350_reg[pdev->id].irq,
1348 pmic_uv_handler, rdev);
1349 if (ret < 0) {
1350 regulator_unregister(rdev);
1351 dev_err(&pdev->dev, "failed to register regulator %s IRQ\n",
1352 wm8350_reg[pdev->id].name);
1353 return ret;
1354 }
1355
1356 wm8350_unmask_irq(wm8350, wm8350_reg[pdev->id].irq);
1357
1358 return 0;
1359}
1360
1361static int wm8350_regulator_remove(struct platform_device *pdev)
1362{
1363 struct regulator_dev *rdev = platform_get_drvdata(pdev);
1364 struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
1365
1366 wm8350_mask_irq(wm8350, wm8350_reg[pdev->id].irq);
1367 wm8350_free_irq(wm8350, wm8350_reg[pdev->id].irq);
1368
1369 regulator_unregister(rdev);
1370
1371 return 0;
1372}
1373
1374int wm8350_register_regulator(struct wm8350 *wm8350, int reg,
1375 struct regulator_init_data *initdata)
1376{
1377 struct platform_device *pdev;
1378 int ret;
1379
1380 if (wm8350->pmic.pdev[reg])
1381 return -EBUSY;
1382
Mark Brown645524a2008-12-18 23:12:16 +0100[diff] [blame]1383 if (reg >= WM8350_DCDC_1 && reg <= WM8350_DCDC_6 &&
1384 reg > wm8350->pmic.max_dcdc)
1385 return -ENODEV;
1386 if (reg >= WM8350_ISINK_A && reg <= WM8350_ISINK_B &&
1387 reg > wm8350->pmic.max_isink)
1388 return -ENODEV;
1389
Mark Brownda091552008-10-10 15:58:15 +0100[diff] [blame]1390 pdev = platform_device_alloc("wm8350-regulator", reg);
1391 if (!pdev)
1392 return -ENOMEM;
1393
1394 wm8350->pmic.pdev[reg] = pdev;
1395
1396 initdata->driver_data = wm8350;
1397
1398 pdev->dev.platform_data = initdata;
1399 pdev->dev.parent = wm8350->dev;
1400 platform_set_drvdata(pdev, wm8350);
1401
1402 ret = platform_device_add(pdev);
1403
1404 if (ret != 0) {
1405 dev_err(wm8350->dev, "Failed to register regulator %d: %d\n",
1406 reg, ret);
1407 platform_device_del(pdev);
1408 wm8350->pmic.pdev[reg] = NULL;
1409 }
1410
1411 return ret;
1412}
1413EXPORT_SYMBOL_GPL(wm8350_register_regulator);
1414
Mark Brown0081e802008-12-04 16:52:33 +0000[diff] [blame]1415/**
1416 * wm8350_register_led - Register a WM8350 LED output
1417 *
1418 * @param wm8350 The WM8350 device to configure.
1419 * @param lednum LED device index to create.
1420 * @param dcdc The DCDC to use for the LED.
1421 * @param isink The ISINK to use for the LED.
1422 * @param pdata Configuration for the LED.
1423 *
1424 * The WM8350 supports the use of an ISINK together with a DCDC to
1425 * provide a power-efficient LED driver. This function registers the
1426 * regulators and instantiates the platform device for a LED. The
1427 * operating modes for the LED regulators must be configured using
1428 * wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and
1429 * wm8350_dcdc_set_slot() prior to calling this function.
1430 */
1431int wm8350_register_led(struct wm8350 *wm8350, int lednum, int dcdc, int isink,
1432 struct wm8350_led_platform_data *pdata)
1433{
1434 struct wm8350_led *led;
1435 struct platform_device *pdev;
1436 int ret;
1437
1438 if (lednum > ARRAY_SIZE(wm8350->pmic.led) || lednum < 0) {
1439 dev_err(wm8350->dev, "Invalid LED index %d\n", lednum);
1440 return -ENODEV;
1441 }
1442
1443 led = &wm8350->pmic.led[lednum];
1444
1445 if (led->pdev) {
1446 dev_err(wm8350->dev, "LED %d already allocated\n", lednum);
1447 return -EINVAL;
1448 }
1449
1450 pdev = platform_device_alloc("wm8350-led", lednum);
1451 if (pdev == NULL) {
1452 dev_err(wm8350->dev, "Failed to allocate LED %d\n", lednum);
1453 return -ENOMEM;
1454 }
1455
1456 led->isink_consumer.dev = &pdev->dev;
1457 led->isink_consumer.supply = "led_isink";
1458 led->isink_init.num_consumer_supplies = 1;
1459 led->isink_init.consumer_supplies = &led->isink_consumer;
1460 led->isink_init.constraints.min_uA = 0;
1461 led->isink_init.constraints.max_uA = pdata->max_uA;
1462 led->isink_init.constraints.valid_ops_mask = REGULATOR_CHANGE_CURRENT;
1463 led->isink_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
1464 ret = wm8350_register_regulator(wm8350, isink, &led->isink_init);
1465 if (ret != 0) {
1466 platform_device_put(pdev);
1467 return ret;
1468 }
1469
1470 led->dcdc_consumer.dev = &pdev->dev;
1471 led->dcdc_consumer.supply = "led_vcc";
1472 led->dcdc_init.num_consumer_supplies = 1;
1473 led->dcdc_init.consumer_supplies = &led->dcdc_consumer;
1474 led->dcdc_init.constraints.valid_modes_mask = REGULATOR_MODE_NORMAL;
1475 ret = wm8350_register_regulator(wm8350, dcdc, &led->dcdc_init);
1476 if (ret != 0) {
1477 platform_device_put(pdev);
1478 return ret;
1479 }
1480
1481 switch (isink) {
1482 case WM8350_ISINK_A:
1483 wm8350->pmic.isink_A_dcdc = dcdc;
1484 break;
1485 case WM8350_ISINK_B:
1486 wm8350->pmic.isink_B_dcdc = dcdc;
1487 break;
1488 }
1489
1490 pdev->dev.platform_data = pdata;
1491 pdev->dev.parent = wm8350->dev;
1492 ret = platform_device_add(pdev);
1493 if (ret != 0) {
1494 dev_err(wm8350->dev, "Failed to register LED %d: %d\n",
1495 lednum, ret);
1496 platform_device_put(pdev);
1497 return ret;
1498 }
1499
1500 led->pdev = pdev;
1501
1502 return 0;
1503}
1504EXPORT_SYMBOL_GPL(wm8350_register_led);
1505
Mark Brownda091552008-10-10 15:58:15 +0100[diff] [blame]1506static struct platform_driver wm8350_regulator_driver = {
1507 .probe = wm8350_regulator_probe,
1508 .remove = wm8350_regulator_remove,
1509 .driver = {
1510 .name = "wm8350-regulator",
1511 },
1512};
1513
1514static int __init wm8350_regulator_init(void)
1515{
1516 return platform_driver_register(&wm8350_regulator_driver);
1517}
1518subsys_initcall(wm8350_regulator_init);
1519
1520static void __exit wm8350_regulator_exit(void)
1521{
1522 platform_driver_unregister(&wm8350_regulator_driver);
1523}
1524module_exit(wm8350_regulator_exit);
1525
1526/* Module information */
1527MODULE_AUTHOR("Liam Girdwood");
1528MODULE_DESCRIPTION("WM8350 voltage and current regulator driver");
1529MODULE_LICENSE("GPL");