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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-10-10 10:58:15 -0400
committerLiam Girdwood <lrg@slimlogic.co.uk>2008-10-13 16:51:56 -0400
commitda09155ac8d3f04c299b3d82a6ab0df8d03da632 (patch)
treed6a74be9aa350179d51f5a0ffbcbf06c37a11d37 /drivers/regulator/wm8350-regulator.c
parentebccec0fa4e35dff0c18663a492a65f4dc6cad7a (diff)
regulator: Add WM8350 regulator support
The WM8350 features six DCDC convertors (four buck and two boost), four LDO voltage regulators and two constant current sinks. This driver adds support for these through the regulator API. This driver was written by Liam Girdwood with updates for submission from Mark Brown. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator/wm8350-regulator.c')
-rw-r--r--drivers/regulator/wm8350-regulator.c1431
1 files changed, 1431 insertions, 0 deletions
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c
new file mode 100644
index 000000000000..1f44b17e23b1
--- /dev/null
+++ b/drivers/regulator/wm8350-regulator.c
@@ -0,0 +1,1431 @@
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
1383 pdev = platform_device_alloc("wm8350-regulator", reg);
1384 if (!pdev)
1385 return -ENOMEM;
1386
1387 wm8350->pmic.pdev[reg] = pdev;
1388
1389 initdata->driver_data = wm8350;
1390
1391 pdev->dev.platform_data = initdata;
1392 pdev->dev.parent = wm8350->dev;
1393 platform_set_drvdata(pdev, wm8350);
1394
1395 ret = platform_device_add(pdev);
1396
1397 if (ret != 0) {
1398 dev_err(wm8350->dev, "Failed to register regulator %d: %d\n",
1399 reg, ret);
1400 platform_device_del(pdev);
1401 wm8350->pmic.pdev[reg] = NULL;
1402 }
1403
1404 return ret;
1405}
1406EXPORT_SYMBOL_GPL(wm8350_register_regulator);
1407
1408static struct platform_driver wm8350_regulator_driver = {
1409 .probe = wm8350_regulator_probe,
1410 .remove = wm8350_regulator_remove,
1411 .driver = {
1412 .name = "wm8350-regulator",
1413 },
1414};
1415
1416static int __init wm8350_regulator_init(void)
1417{
1418 return platform_driver_register(&wm8350_regulator_driver);
1419}
1420subsys_initcall(wm8350_regulator_init);
1421
1422static void __exit wm8350_regulator_exit(void)
1423{
1424 platform_driver_unregister(&wm8350_regulator_driver);
1425}
1426module_exit(wm8350_regulator_exit);
1427
1428/* Module information */
1429MODULE_AUTHOR("Liam Girdwood");
1430MODULE_DESCRIPTION("WM8350 voltage and current regulator driver");
1431MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-20 12:34:45 -0400