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1/*
2 * Copyright (c) 2014, Sony Mobile Communications AB.
3 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 and
7 * only version 2 as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15#include <linux/module.h>
16#include <linux/platform_device.h>
17#include <linux/of.h>
18#include <linux/of_device.h>
19#include <linux/regulator/driver.h>
20#include <linux/regulator/machine.h>
21#include <linux/regulator/of_regulator.h>
22#include <linux/mfd/qcom_rpm.h>
23
24#include <dt-bindings/mfd/qcom-rpm.h>
25
26#define MAX_REQUEST_LEN 2
27
28struct request_member {
29 int word;
30 unsigned int mask;
31 int shift;
32};
33
34struct rpm_reg_parts {
35 struct request_member mV; /* used if voltage is in mV */
36 struct request_member uV; /* used if voltage is in uV */
37 struct request_member ip; /* peak current in mA */
38 struct request_member pd; /* pull down enable */
39 struct request_member ia; /* average current in mA */
40 struct request_member fm; /* force mode */
41 struct request_member pm; /* power mode */
42 struct request_member pc; /* pin control */
43 struct request_member pf; /* pin function */
44 struct request_member enable_state; /* NCP and switch */
45 struct request_member comp_mode; /* NCP */
46 struct request_member freq; /* frequency: NCP and SMPS */
47 struct request_member freq_clk_src; /* clock source: SMPS */
48 struct request_member hpm; /* switch: control OCP and SS */
49 int request_len;
50};
51
52#define FORCE_MODE_IS_2_BITS(reg) \
53 (((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3)
54
55struct qcom_rpm_reg {
56 struct qcom_rpm *rpm;
57
58 struct mutex lock;
59 struct device *dev;
60 struct regulator_desc desc;
61 const struct rpm_reg_parts *parts;
62
63 int resource;
64 u32 val[MAX_REQUEST_LEN];
65
66 int uV;
67 int is_enabled;
68
69 bool supports_force_mode_auto;
70 bool supports_force_mode_bypass;
71};
72
73static const struct rpm_reg_parts rpm8660_ldo_parts = {
74 .request_len = 2,
75 .mV = { 0, 0x00000FFF, 0 },
76 .ip = { 0, 0x00FFF000, 12 },
77 .fm = { 0, 0x03000000, 24 },
78 .pc = { 0, 0x3C000000, 26 },
79 .pf = { 0, 0xC0000000, 30 },
80 .pd = { 1, 0x00000001, 0 },
81 .ia = { 1, 0x00001FFE, 1 },
82};
83
84static const struct rpm_reg_parts rpm8660_smps_parts = {
85 .request_len = 2,
86 .mV = { 0, 0x00000FFF, 0 },
87 .ip = { 0, 0x00FFF000, 12 },
88 .fm = { 0, 0x03000000, 24 },
89 .pc = { 0, 0x3C000000, 26 },
90 .pf = { 0, 0xC0000000, 30 },
91 .pd = { 1, 0x00000001, 0 },
92 .ia = { 1, 0x00001FFE, 1 },
93 .freq = { 1, 0x001FE000, 13 },
94 .freq_clk_src = { 1, 0x00600000, 21 },
95};
96
97static const struct rpm_reg_parts rpm8660_switch_parts = {
98 .request_len = 1,
99 .enable_state = { 0, 0x00000001, 0 },
100 .pd = { 0, 0x00000002, 1 },
101 .pc = { 0, 0x0000003C, 2 },
102 .pf = { 0, 0x000000C0, 6 },
103 .hpm = { 0, 0x00000300, 8 },
104};
105
106static const struct rpm_reg_parts rpm8660_ncp_parts = {
107 .request_len = 1,
108 .mV = { 0, 0x00000FFF, 0 },
109 .enable_state = { 0, 0x00001000, 12 },
110 .comp_mode = { 0, 0x00002000, 13 },
111 .freq = { 0, 0x003FC000, 14 },
112};
113
114static const struct rpm_reg_parts rpm8960_ldo_parts = {
115 .request_len = 2,
116 .uV = { 0, 0x007FFFFF, 0 },
117 .pd = { 0, 0x00800000, 23 },
118 .pc = { 0, 0x0F000000, 24 },
119 .pf = { 0, 0xF0000000, 28 },
120 .ip = { 1, 0x000003FF, 0 },
121 .ia = { 1, 0x000FFC00, 10 },
122 .fm = { 1, 0x00700000, 20 },
123};
124
125static const struct rpm_reg_parts rpm8960_smps_parts = {
126 .request_len = 2,
127 .uV = { 0, 0x007FFFFF, 0 },
128 .pd = { 0, 0x00800000, 23 },
129 .pc = { 0, 0x0F000000, 24 },
130 .pf = { 0, 0xF0000000, 28 },
131 .ip = { 1, 0x000003FF, 0 },
132 .ia = { 1, 0x000FFC00, 10 },
133 .fm = { 1, 0x00700000, 20 },
134 .pm = { 1, 0x00800000, 23 },
135 .freq = { 1, 0x1F000000, 24 },
136 .freq_clk_src = { 1, 0x60000000, 29 },
137};
138
139static const struct rpm_reg_parts rpm8960_switch_parts = {
140 .request_len = 1,
141 .enable_state = { 0, 0x00000001, 0 },
142 .pd = { 0, 0x00000002, 1 },
143 .pc = { 0, 0x0000003C, 2 },
144 .pf = { 0, 0x000003C0, 6 },
145 .hpm = { 0, 0x00000C00, 10 },
146};
147
148static const struct rpm_reg_parts rpm8960_ncp_parts = {
149 .request_len = 1,
150 .uV = { 0, 0x007FFFFF, 0 },
151 .enable_state = { 0, 0x00800000, 23 },
152 .comp_mode = { 0, 0x01000000, 24 },
153 .freq = { 0, 0x3E000000, 25 },
154};
155
156/*
157 * Physically available PMIC regulator voltage ranges
158 */
159static const struct regulator_linear_range pldo_ranges[] = {
160 REGULATOR_LINEAR_RANGE( 750000, 0, 59, 12500),
161 REGULATOR_LINEAR_RANGE(1500000, 60, 123, 25000),
162 REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000),
163};
164
165static const struct regulator_linear_range nldo_ranges[] = {
166 REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500),
167};
168
169static const struct regulator_linear_range nldo1200_ranges[] = {
170 REGULATOR_LINEAR_RANGE( 375000, 0, 59, 6250),
171 REGULATOR_LINEAR_RANGE( 750000, 60, 123, 12500),
172};
173
174static const struct regulator_linear_range smps_ranges[] = {
175 REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500),
176 REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500),
177 REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000),
178};
179
180static const struct regulator_linear_range ftsmps_ranges[] = {
181 REGULATOR_LINEAR_RANGE( 350000, 0, 6, 50000),
182 REGULATOR_LINEAR_RANGE( 700000, 7, 63, 12500),
183 REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000),
184};
185
186static const struct regulator_linear_range smb208_ranges[] = {
187 REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500),
188 REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500),
189 REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000),
190 REGULATOR_LINEAR_RANGE(3100000, 154, 234, 25000),
191};
192
193static const struct regulator_linear_range ncp_ranges[] = {
194 REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000),
195};
196
197static int rpm_reg_write(struct qcom_rpm_reg *vreg,
198 const struct request_member *req,
199 const int value)
200{
201 if (WARN_ON((value << req->shift) & ~req->mask))
202 return -EINVAL;
203
204 vreg->val[req->word] &= ~req->mask;
205 vreg->val[req->word] |= value << req->shift;
206
207 return qcom_rpm_write(vreg->rpm,
208 QCOM_RPM_ACTIVE_STATE,
209 vreg->resource,
210 vreg->val,
211 vreg->parts->request_len);
212}
213
214static int rpm_reg_set_mV_sel(struct regulator_dev *rdev,
215 unsigned selector)
216{
217 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
218 const struct rpm_reg_parts *parts = vreg->parts;
219 const struct request_member *req = &parts->mV;
220 int ret = 0;
221 int uV;
222
223 if (req->mask == 0)
224 return -EINVAL;
225
226 uV = regulator_list_voltage_linear_range(rdev, selector);
227 if (uV < 0)
228 return uV;
229
230 mutex_lock(&vreg->lock);
231 if (vreg->is_enabled)
232 ret = rpm_reg_write(vreg, req, uV / 1000);
233
234 if (!ret)
235 vreg->uV = uV;
236 mutex_unlock(&vreg->lock);
237
238 return ret;
239}
240
241static int rpm_reg_set_uV_sel(struct regulator_dev *rdev,
242 unsigned selector)
243{
244 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
245 const struct rpm_reg_parts *parts = vreg->parts;
246 const struct request_member *req = &parts->uV;
247 int ret = 0;
248 int uV;
249
250 if (req->mask == 0)
251 return -EINVAL;
252
253 uV = regulator_list_voltage_linear_range(rdev, selector);
254 if (uV < 0)
255 return uV;
256
257 mutex_lock(&vreg->lock);
258 if (vreg->is_enabled)
259 ret = rpm_reg_write(vreg, req, uV);
260
261 if (!ret)
262 vreg->uV = uV;
263 mutex_unlock(&vreg->lock);
264
265 return ret;
266}
267
268static int rpm_reg_get_voltage(struct regulator_dev *rdev)
269{
270 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
271
272 return vreg->uV;
273}
274
275static int rpm_reg_mV_enable(struct regulator_dev *rdev)
276{
277 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
278 const struct rpm_reg_parts *parts = vreg->parts;
279 const struct request_member *req = &parts->mV;
280 int ret;
281
282 if (req->mask == 0)
283 return -EINVAL;
284
285 mutex_lock(&vreg->lock);
286 ret = rpm_reg_write(vreg, req, vreg->uV / 1000);
287 if (!ret)
288 vreg->is_enabled = 1;
289 mutex_unlock(&vreg->lock);
290
291 return ret;
292}
293
294static int rpm_reg_uV_enable(struct regulator_dev *rdev)
295{
296 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
297 const struct rpm_reg_parts *parts = vreg->parts;
298 const struct request_member *req = &parts->uV;
299 int ret;
300
301 if (req->mask == 0)
302 return -EINVAL;
303
304 mutex_lock(&vreg->lock);
305 ret = rpm_reg_write(vreg, req, vreg->uV);
306 if (!ret)
307 vreg->is_enabled = 1;
308 mutex_unlock(&vreg->lock);
309
310 return ret;
311}
312
313static int rpm_reg_switch_enable(struct regulator_dev *rdev)
314{
315 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
316 const struct rpm_reg_parts *parts = vreg->parts;
317 const struct request_member *req = &parts->enable_state;
318 int ret;
319
320 if (req->mask == 0)
321 return -EINVAL;
322
323 mutex_lock(&vreg->lock);
324 ret = rpm_reg_write(vreg, req, 1);
325 if (!ret)
326 vreg->is_enabled = 1;
327 mutex_unlock(&vreg->lock);
328
329 return ret;
330}
331
332static int rpm_reg_mV_disable(struct regulator_dev *rdev)
333{
334 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
335 const struct rpm_reg_parts *parts = vreg->parts;
336 const struct request_member *req = &parts->mV;
337 int ret;
338
339 if (req->mask == 0)
340 return -EINVAL;
341
342 mutex_lock(&vreg->lock);
343 ret = rpm_reg_write(vreg, req, 0);
344 if (!ret)
345 vreg->is_enabled = 0;
346 mutex_unlock(&vreg->lock);
347
348 return ret;
349}
350
351static int rpm_reg_uV_disable(struct regulator_dev *rdev)
352{
353 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
354 const struct rpm_reg_parts *parts = vreg->parts;
355 const struct request_member *req = &parts->uV;
356 int ret;
357
358 if (req->mask == 0)
359 return -EINVAL;
360
361 mutex_lock(&vreg->lock);
362 ret = rpm_reg_write(vreg, req, 0);
363 if (!ret)
364 vreg->is_enabled = 0;
365 mutex_unlock(&vreg->lock);
366
367 return ret;
368}
369
370static int rpm_reg_switch_disable(struct regulator_dev *rdev)
371{
372 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
373 const struct rpm_reg_parts *parts = vreg->parts;
374 const struct request_member *req = &parts->enable_state;
375 int ret;
376
377 if (req->mask == 0)
378 return -EINVAL;
379
380 mutex_lock(&vreg->lock);
381 ret = rpm_reg_write(vreg, req, 0);
382 if (!ret)
383 vreg->is_enabled = 0;
384 mutex_unlock(&vreg->lock);
385
386 return ret;
387}
388
389static int rpm_reg_is_enabled(struct regulator_dev *rdev)
390{
391 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
392
393 return vreg->is_enabled;
394}
395
396static int rpm_reg_set_load(struct regulator_dev *rdev, int load_uA)
397{
398 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
399 const struct rpm_reg_parts *parts = vreg->parts;
400 const struct request_member *req = &parts->ia;
401 int load_mA = load_uA / 1000;
402 int max_mA = req->mask >> req->shift;
403 int ret;
404
405 if (req->mask == 0)
406 return -EINVAL;
407
408 if (load_mA > max_mA)
409 load_mA = max_mA;
410
411 mutex_lock(&vreg->lock);
412 ret = rpm_reg_write(vreg, req, load_mA);
413 mutex_unlock(&vreg->lock);
414
415 return ret;
416}
417
418static struct regulator_ops uV_ops = {
419 .list_voltage = regulator_list_voltage_linear_range,
420
421 .set_voltage_sel = rpm_reg_set_uV_sel,
422 .get_voltage = rpm_reg_get_voltage,
423
424 .enable = rpm_reg_uV_enable,
425 .disable = rpm_reg_uV_disable,
426 .is_enabled = rpm_reg_is_enabled,
427
428 .set_load = rpm_reg_set_load,
429};
430
431static struct regulator_ops mV_ops = {
432 .list_voltage = regulator_list_voltage_linear_range,
433
434 .set_voltage_sel = rpm_reg_set_mV_sel,
435 .get_voltage = rpm_reg_get_voltage,
436
437 .enable = rpm_reg_mV_enable,
438 .disable = rpm_reg_mV_disable,
439 .is_enabled = rpm_reg_is_enabled,
440
441 .set_load = rpm_reg_set_load,
442};
443
444static struct regulator_ops switch_ops = {
445 .enable = rpm_reg_switch_enable,
446 .disable = rpm_reg_switch_disable,
447 .is_enabled = rpm_reg_is_enabled,
448};
449
450/*
451 * PM8018 regulators
452 */
453static const struct qcom_rpm_reg pm8018_pldo = {
454 .desc.linear_ranges = pldo_ranges,
455 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
456 .desc.n_voltages = 161,
457 .desc.ops = &uV_ops,
458 .parts = &rpm8960_ldo_parts,
459 .supports_force_mode_auto = false,
460 .supports_force_mode_bypass = false,
461};
462
463static const struct qcom_rpm_reg pm8018_nldo = {
464 .desc.linear_ranges = nldo_ranges,
465 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
466 .desc.n_voltages = 64,
467 .desc.ops = &uV_ops,
468 .parts = &rpm8960_ldo_parts,
469 .supports_force_mode_auto = false,
470 .supports_force_mode_bypass = false,
471};
472
473static const struct qcom_rpm_reg pm8018_smps = {
474 .desc.linear_ranges = smps_ranges,
475 .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
476 .desc.n_voltages = 154,
477 .desc.ops = &uV_ops,
478 .parts = &rpm8960_smps_parts,
479 .supports_force_mode_auto = false,
480 .supports_force_mode_bypass = false,
481};
482
483static const struct qcom_rpm_reg pm8018_switch = {
484 .desc.ops = &switch_ops,
485 .parts = &rpm8960_switch_parts,
486};
487
488/*
489 * PM8058 regulators
490 */
491static const struct qcom_rpm_reg pm8058_pldo = {
492 .desc.linear_ranges = pldo_ranges,
493 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
494 .desc.n_voltages = 161,
495 .desc.ops = &mV_ops,
496 .parts = &rpm8660_ldo_parts,
497 .supports_force_mode_auto = false,
498 .supports_force_mode_bypass = false,
499};
500
501static const struct qcom_rpm_reg pm8058_nldo = {
502 .desc.linear_ranges = nldo_ranges,
503 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
504 .desc.n_voltages = 64,
505 .desc.ops = &mV_ops,
506 .parts = &rpm8660_ldo_parts,
507 .supports_force_mode_auto = false,
508 .supports_force_mode_bypass = false,
509};
510
511static const struct qcom_rpm_reg pm8058_smps = {
512 .desc.linear_ranges = smps_ranges,
513 .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
514 .desc.n_voltages = 154,
515 .desc.ops = &mV_ops,
516 .parts = &rpm8660_smps_parts,
517 .supports_force_mode_auto = false,
518 .supports_force_mode_bypass = false,
519};
520
521static const struct qcom_rpm_reg pm8058_ncp = {
522 .desc.linear_ranges = ncp_ranges,
523 .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
524 .desc.n_voltages = 32,
525 .desc.ops = &mV_ops,
526 .parts = &rpm8660_ncp_parts,
527};
528
529static const struct qcom_rpm_reg pm8058_switch = {
530 .desc.ops = &switch_ops,
531 .parts = &rpm8660_switch_parts,
532};
533
534/*
535 * PM8901 regulators
536 */
537static const struct qcom_rpm_reg pm8901_pldo = {
538 .desc.linear_ranges = pldo_ranges,
539 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
540 .desc.n_voltages = 161,
541 .desc.ops = &mV_ops,
542 .parts = &rpm8660_ldo_parts,
543 .supports_force_mode_auto = false,
544 .supports_force_mode_bypass = true,
545};
546
547static const struct qcom_rpm_reg pm8901_nldo = {
548 .desc.linear_ranges = nldo_ranges,
549 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
550 .desc.n_voltages = 64,
551 .desc.ops = &mV_ops,
552 .parts = &rpm8660_ldo_parts,
553 .supports_force_mode_auto = false,
554 .supports_force_mode_bypass = true,
555};
556
557static const struct qcom_rpm_reg pm8901_ftsmps = {
558 .desc.linear_ranges = ftsmps_ranges,
559 .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
560 .desc.n_voltages = 101,
561 .desc.ops = &mV_ops,
562 .parts = &rpm8660_smps_parts,
563 .supports_force_mode_auto = true,
564 .supports_force_mode_bypass = false,
565};
566
567static const struct qcom_rpm_reg pm8901_switch = {
568 .desc.ops = &switch_ops,
569 .parts = &rpm8660_switch_parts,
570};
571
572/*
573 * PM8921 regulators
574 */
575static const struct qcom_rpm_reg pm8921_pldo = {
576 .desc.linear_ranges = pldo_ranges,
577 .desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
578 .desc.n_voltages = 161,
579 .desc.ops = &uV_ops,
580 .parts = &rpm8960_ldo_parts,
581 .supports_force_mode_auto = false,
582 .supports_force_mode_bypass = true,
583};
584
585static const struct qcom_rpm_reg pm8921_nldo = {
586 .desc.linear_ranges = nldo_ranges,
587 .desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
588 .desc.n_voltages = 64,
589 .desc.ops = &uV_ops,
590 .parts = &rpm8960_ldo_parts,
591 .supports_force_mode_auto = false,
592 .supports_force_mode_bypass = true,
593};
594
595static const struct qcom_rpm_reg pm8921_nldo1200 = {
596 .desc.linear_ranges = nldo1200_ranges,
597 .desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges),
598 .desc.n_voltages = 124,
599 .desc.ops = &uV_ops,
600 .parts = &rpm8960_ldo_parts,
601 .supports_force_mode_auto = false,
602 .supports_force_mode_bypass = true,
603};
604
605static const struct qcom_rpm_reg pm8921_smps = {
606 .desc.linear_ranges = smps_ranges,
607 .desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
608 .desc.n_voltages = 154,
609 .desc.ops = &uV_ops,
610 .parts = &rpm8960_smps_parts,
611 .supports_force_mode_auto = true,
612 .supports_force_mode_bypass = false,
613};
614
615static const struct qcom_rpm_reg pm8921_ftsmps = {
616 .desc.linear_ranges = ftsmps_ranges,
617 .desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
618 .desc.n_voltages = 101,
619 .desc.ops = &uV_ops,
620 .parts = &rpm8960_smps_parts,
621 .supports_force_mode_auto = true,
622 .supports_force_mode_bypass = false,
623};
624
625static const struct qcom_rpm_reg pm8921_ncp = {
626 .desc.linear_ranges = ncp_ranges,
627 .desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
628 .desc.n_voltages = 32,
629 .desc.ops = &uV_ops,
630 .parts = &rpm8960_ncp_parts,
631};
632
633static const struct qcom_rpm_reg pm8921_switch = {
634 .desc.ops = &switch_ops,
635 .parts = &rpm8960_switch_parts,
636};
637
638static const struct qcom_rpm_reg smb208_smps = {
639 .desc.linear_ranges = smb208_ranges,
640 .desc.n_linear_ranges = ARRAY_SIZE(smb208_ranges),
641 .desc.n_voltages = 235,
642 .desc.ops = &uV_ops,
643 .parts = &rpm8960_smps_parts,
644 .supports_force_mode_auto = false,
645 .supports_force_mode_bypass = false,
646};
647
648static int rpm_reg_set(struct qcom_rpm_reg *vreg,
649 const struct request_member *req,
650 const int value)
651{
652 if (req->mask == 0 || (value << req->shift) & ~req->mask)
653 return -EINVAL;
654
655 vreg->val[req->word] &= ~req->mask;
656 vreg->val[req->word] |= value << req->shift;
657
658 return 0;
659}
660
661static int rpm_reg_of_parse_freq(struct device *dev,
662 struct device_node *node,
663 struct qcom_rpm_reg *vreg)
664{
665 static const int freq_table[] = {
666 19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000,
667 2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000,
668 1280000, 1200000,
669
670 };
671 const char *key;
672 u32 freq;
673 int ret;
674 int i;
675
676 key = "qcom,switch-mode-frequency";
677 ret = of_property_read_u32(node, key, &freq);
678 if (ret) {
679 dev_err(dev, "regulator requires %s property\n", key);
680 return -EINVAL;
681 }
682
683 for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
684 if (freq == freq_table[i]) {
685 rpm_reg_set(vreg, &vreg->parts->freq, i + 1);
686 return 0;
687 }
688 }
689
690 dev_err(dev, "invalid frequency %d\n", freq);
691 return -EINVAL;
692}
693
694static int rpm_reg_of_parse(struct device_node *node,
695 const struct regulator_desc *desc,
696 struct regulator_config *config)
697{
698 struct qcom_rpm_reg *vreg = config->driver_data;
699 struct device *dev = config->dev;
700 const char *key;
701 u32 force_mode;
702 bool pwm;
703 u32 val;
704 int ret;
705
706 key = "bias-pull-down";
707 if (of_property_read_bool(node, key)) {
708 ret = rpm_reg_set(vreg, &vreg->parts->pd, 1);
709 if (ret) {
710 dev_err(dev, "%s is invalid", key);
711 return ret;
712 }
713 }
714
715 if (vreg->parts->freq.mask) {
716 ret = rpm_reg_of_parse_freq(dev, node, vreg);
717 if (ret < 0)
718 return ret;
719 }
720
721 if (vreg->parts->pm.mask) {
722 key = "qcom,power-mode-hysteretic";
723 pwm = !of_property_read_bool(node, key);
724
725 ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm);
726 if (ret) {
727 dev_err(dev, "failed to set power mode\n");
728 return ret;
729 }
730 }
731
732 if (vreg->parts->fm.mask) {
733 force_mode = -1;
734
735 key = "qcom,force-mode";
736 ret = of_property_read_u32(node, key, &val);
737 if (ret == -EINVAL) {
738 val = QCOM_RPM_FORCE_MODE_NONE;
739 } else if (ret < 0) {
740 dev_err(dev, "failed to read %s\n", key);
741 return ret;
742 }
743
744 /*
745 * If force-mode is encoded as 2 bits then the
746 * possible register values are:
747 * NONE, LPM, HPM
748 * otherwise:
749 * NONE, LPM, AUTO, HPM, BYPASS
750 */
751 switch (val) {
752 case QCOM_RPM_FORCE_MODE_NONE:
753 force_mode = 0;
754 break;
755 case QCOM_RPM_FORCE_MODE_LPM:
756 force_mode = 1;
757 break;
758 case QCOM_RPM_FORCE_MODE_HPM:
759 if (FORCE_MODE_IS_2_BITS(vreg))
760 force_mode = 2;
761 else
762 force_mode = 3;
763 break;
764 case QCOM_RPM_FORCE_MODE_AUTO:
765 if (vreg->supports_force_mode_auto)
766 force_mode = 2;
767 break;
768 case QCOM_RPM_FORCE_MODE_BYPASS:
769 if (vreg->supports_force_mode_bypass)
770 force_mode = 4;
771 break;
772 }
773
774 if (force_mode == -1) {
775 dev_err(dev, "invalid force mode\n");
776 return -EINVAL;
777 }
778
779 ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode);
780 if (ret) {
781 dev_err(dev, "failed to set force mode\n");
782 return ret;
783 }
784 }
785
786 return 0;
787}
788
789struct rpm_regulator_data {
790 const char *name;
791 int resource;
792 const struct qcom_rpm_reg *template;
793 const char *supply;
794};
795
796static const struct rpm_regulator_data rpm_pm8018_regulators[] = {
797 { "s1", QCOM_RPM_PM8018_SMPS1, &pm8018_smps, "vdd_s1" },
798 { "s2", QCOM_RPM_PM8018_SMPS2, &pm8018_smps, "vdd_s2" },
799 { "s3", QCOM_RPM_PM8018_SMPS3, &pm8018_smps, "vdd_s3" },
800 { "s4", QCOM_RPM_PM8018_SMPS4, &pm8018_smps, "vdd_s4" },
801 { "s5", QCOM_RPM_PM8018_SMPS5, &pm8018_smps, "vdd_s5" },
802
803 { "l2", QCOM_RPM_PM8018_LDO2, &pm8018_pldo, "vdd_l2" },
804 { "l3", QCOM_RPM_PM8018_LDO3, &pm8018_pldo, "vdd_l3" },
805 { "l4", QCOM_RPM_PM8018_LDO4, &pm8018_pldo, "vdd_l4" },
806 { "l5", QCOM_RPM_PM8018_LDO5, &pm8018_pldo, "vdd_l5" },
807 { "l6", QCOM_RPM_PM8018_LDO6, &pm8018_pldo, "vdd_l7" },
808 { "l7", QCOM_RPM_PM8018_LDO7, &pm8018_pldo, "vdd_l7" },
809 { "l8", QCOM_RPM_PM8018_LDO8, &pm8018_nldo, "vdd_l8" },
810 { "l9", QCOM_RPM_PM8018_LDO9, &pm8921_nldo1200,
811 "vdd_l9_l10_l11_l12" },
812 { "l10", QCOM_RPM_PM8018_LDO10, &pm8018_nldo, "vdd_l9_l10_l11_l12" },
813 { "l11", QCOM_RPM_PM8018_LDO11, &pm8018_nldo, "vdd_l9_l10_l11_l12" },
814 { "l12", QCOM_RPM_PM8018_LDO12, &pm8018_nldo, "vdd_l9_l10_l11_l12" },
815 { "l14", QCOM_RPM_PM8018_LDO14, &pm8018_pldo, "vdd_l14" },
816
817 { "lvs1", QCOM_RPM_PM8018_LVS1, &pm8018_switch, "lvs1_in" },
818
819 { }
820};
821
822static const struct rpm_regulator_data rpm_pm8058_regulators[] = {
823 { "l0", QCOM_RPM_PM8058_LDO0, &pm8058_nldo, "vdd_l0_l1_lvs" },
824 { "l1", QCOM_RPM_PM8058_LDO1, &pm8058_nldo, "vdd_l0_l1_lvs" },
825 { "l2", QCOM_RPM_PM8058_LDO2, &pm8058_pldo, "vdd_l2_l11_l12" },
826 { "l3", QCOM_RPM_PM8058_LDO3, &pm8058_pldo, "vdd_l3_l4_l5" },
827 { "l4", QCOM_RPM_PM8058_LDO4, &pm8058_pldo, "vdd_l3_l4_l5" },
828 { "l5", QCOM_RPM_PM8058_LDO5, &pm8058_pldo, "vdd_l3_l4_l5" },
829 { "l6", QCOM_RPM_PM8058_LDO6, &pm8058_pldo, "vdd_l6_l7" },
830 { "l7", QCOM_RPM_PM8058_LDO7, &pm8058_pldo, "vdd_l6_l7" },
831 { "l8", QCOM_RPM_PM8058_LDO8, &pm8058_pldo, "vdd_l8" },
832 { "l9", QCOM_RPM_PM8058_LDO9, &pm8058_pldo, "vdd_l9" },
833 { "l10", QCOM_RPM_PM8058_LDO10, &pm8058_pldo, "vdd_l10" },
834 { "l11", QCOM_RPM_PM8058_LDO11, &pm8058_pldo, "vdd_l2_l11_l12" },
835 { "l12", QCOM_RPM_PM8058_LDO12, &pm8058_pldo, "vdd_l2_l11_l12" },
836 { "l13", QCOM_RPM_PM8058_LDO13, &pm8058_pldo, "vdd_l13_l16" },
837 { "l14", QCOM_RPM_PM8058_LDO14, &pm8058_pldo, "vdd_l14_l15" },
838 { "l15", QCOM_RPM_PM8058_LDO15, &pm8058_pldo, "vdd_l14_l15" },
839 { "l16", QCOM_RPM_PM8058_LDO16, &pm8058_pldo, "vdd_l13_l16" },
840 { "l17", QCOM_RPM_PM8058_LDO17, &pm8058_pldo, "vdd_l17_l18" },
841 { "l18", QCOM_RPM_PM8058_LDO18, &pm8058_pldo, "vdd_l17_l18" },
842 { "l19", QCOM_RPM_PM8058_LDO19, &pm8058_pldo, "vdd_l19_l20" },
843 { "l20", QCOM_RPM_PM8058_LDO20, &pm8058_pldo, "vdd_l19_l20" },
844 { "l21", QCOM_RPM_PM8058_LDO21, &pm8058_nldo, "vdd_l21" },
845 { "l22", QCOM_RPM_PM8058_LDO22, &pm8058_nldo, "vdd_l22" },
846 { "l23", QCOM_RPM_PM8058_LDO23, &pm8058_nldo, "vdd_l23_l24_l25" },
847 { "l24", QCOM_RPM_PM8058_LDO24, &pm8058_nldo, "vdd_l23_l24_l25" },
848 { "l25", QCOM_RPM_PM8058_LDO25, &pm8058_nldo, "vdd_l23_l24_l25" },
849
850 { "s0", QCOM_RPM_PM8058_SMPS0, &pm8058_smps, "vdd_s0" },
851 { "s1", QCOM_RPM_PM8058_SMPS1, &pm8058_smps, "vdd_s1" },
852 { "s2", QCOM_RPM_PM8058_SMPS2, &pm8058_smps, "vdd_s2" },
853 { "s3", QCOM_RPM_PM8058_SMPS3, &pm8058_smps, "vdd_s3" },
854 { "s4", QCOM_RPM_PM8058_SMPS4, &pm8058_smps, "vdd_s4" },
855
856 { "lvs0", QCOM_RPM_PM8058_LVS0, &pm8058_switch, "vdd_l0_l1_lvs" },
857 { "lvs1", QCOM_RPM_PM8058_LVS1, &pm8058_switch, "vdd_l0_l1_lvs" },
858
859 { "ncp", QCOM_RPM_PM8058_NCP, &pm8058_ncp, "vdd_ncp" },
860 { }
861};
862
863static const struct rpm_regulator_data rpm_pm8901_regulators[] = {
864 { "l0", QCOM_RPM_PM8901_LDO0, &pm8901_nldo, "vdd_l0" },
865 { "l1", QCOM_RPM_PM8901_LDO1, &pm8901_pldo, "vdd_l1" },
866 { "l2", QCOM_RPM_PM8901_LDO2, &pm8901_pldo, "vdd_l2" },
867 { "l3", QCOM_RPM_PM8901_LDO3, &pm8901_pldo, "vdd_l3" },
868 { "l4", QCOM_RPM_PM8901_LDO4, &pm8901_pldo, "vdd_l4" },
869 { "l5", QCOM_RPM_PM8901_LDO5, &pm8901_pldo, "vdd_l5" },
870 { "l6", QCOM_RPM_PM8901_LDO6, &pm8901_pldo, "vdd_l6" },
871
872 { "s0", QCOM_RPM_PM8901_SMPS0, &pm8901_ftsmps, "vdd_s0" },
873 { "s1", QCOM_RPM_PM8901_SMPS1, &pm8901_ftsmps, "vdd_s1" },
874 { "s2", QCOM_RPM_PM8901_SMPS2, &pm8901_ftsmps, "vdd_s2" },
875 { "s3", QCOM_RPM_PM8901_SMPS3, &pm8901_ftsmps, "vdd_s3" },
876 { "s4", QCOM_RPM_PM8901_SMPS4, &pm8901_ftsmps, "vdd_s4" },
877
878 { "lvs0", QCOM_RPM_PM8901_LVS0, &pm8901_switch, "lvs0_in" },
879 { "lvs1", QCOM_RPM_PM8901_LVS1, &pm8901_switch, "lvs1_in" },
880 { "lvs2", QCOM_RPM_PM8901_LVS2, &pm8901_switch, "lvs2_in" },
881 { "lvs3", QCOM_RPM_PM8901_LVS3, &pm8901_switch, "lvs3_in" },
882
883 { "mvs", QCOM_RPM_PM8901_MVS, &pm8901_switch, "mvs_in" },
884 { }
885};
886
887static const struct rpm_regulator_data rpm_pm8921_regulators[] = {
888 { "s1", QCOM_RPM_PM8921_SMPS1, &pm8921_smps, "vdd_s1" },
889 { "s2", QCOM_RPM_PM8921_SMPS2, &pm8921_smps, "vdd_s2" },
890 { "s3", QCOM_RPM_PM8921_SMPS3, &pm8921_smps },
891 { "s4", QCOM_RPM_PM8921_SMPS4, &pm8921_smps, "vdd_s4" },
892 { "s7", QCOM_RPM_PM8921_SMPS7, &pm8921_smps, "vdd_s7" },
893 { "s8", QCOM_RPM_PM8921_SMPS8, &pm8921_smps, "vdd_s8" },
894
895 { "l1", QCOM_RPM_PM8921_LDO1, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
896 { "l2", QCOM_RPM_PM8921_LDO2, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
897 { "l3", QCOM_RPM_PM8921_LDO3, &pm8921_pldo, "vdd_l3_l15_l17" },
898 { "l4", QCOM_RPM_PM8921_LDO4, &pm8921_pldo, "vdd_l4_l14" },
899 { "l5", QCOM_RPM_PM8921_LDO5, &pm8921_pldo, "vdd_l5_l8_l16" },
900 { "l6", QCOM_RPM_PM8921_LDO6, &pm8921_pldo, "vdd_l6_l7" },
901 { "l7", QCOM_RPM_PM8921_LDO7, &pm8921_pldo, "vdd_l6_l7" },
902 { "l8", QCOM_RPM_PM8921_LDO8, &pm8921_pldo, "vdd_l5_l8_l16" },
903 { "l9", QCOM_RPM_PM8921_LDO9, &pm8921_pldo, "vdd_l9_l11" },
904 { "l10", QCOM_RPM_PM8921_LDO10, &pm8921_pldo, "vdd_l10_l22" },
905 { "l11", QCOM_RPM_PM8921_LDO11, &pm8921_pldo, "vdd_l9_l11" },
906 { "l12", QCOM_RPM_PM8921_LDO12, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
907 { "l14", QCOM_RPM_PM8921_LDO14, &pm8921_pldo, "vdd_l4_l14" },
908 { "l15", QCOM_RPM_PM8921_LDO15, &pm8921_pldo, "vdd_l3_l15_l17" },
909 { "l16", QCOM_RPM_PM8921_LDO16, &pm8921_pldo, "vdd_l5_l8_l16" },
910 { "l17", QCOM_RPM_PM8921_LDO17, &pm8921_pldo, "vdd_l3_l15_l17" },
911 { "l18", QCOM_RPM_PM8921_LDO18, &pm8921_nldo, "vdd_l1_l2_l12_l18" },
912 { "l21", QCOM_RPM_PM8921_LDO21, &pm8921_pldo, "vdd_l21_l23_l29" },
913 { "l22", QCOM_RPM_PM8921_LDO22, &pm8921_pldo, "vdd_l10_l22" },
914 { "l23", QCOM_RPM_PM8921_LDO23, &pm8921_pldo, "vdd_l21_l23_l29" },
915 { "l24", QCOM_RPM_PM8921_LDO24, &pm8921_nldo1200, "vdd_l24" },
916 { "l25", QCOM_RPM_PM8921_LDO25, &pm8921_nldo1200, "vdd_l25" },
917 { "l26", QCOM_RPM_PM8921_LDO26, &pm8921_nldo1200, "vdd_l26" },
918 { "l27", QCOM_RPM_PM8921_LDO27, &pm8921_nldo1200, "vdd_l27" },
919 { "l28", QCOM_RPM_PM8921_LDO28, &pm8921_nldo1200, "vdd_l28" },
920 { "l29", QCOM_RPM_PM8921_LDO29, &pm8921_pldo, "vdd_l21_l23_l29" },
921
922 { "lvs1", QCOM_RPM_PM8921_LVS1, &pm8921_switch, "vin_lvs1_3_6" },
923 { "lvs2", QCOM_RPM_PM8921_LVS2, &pm8921_switch, "vin_lvs2" },
924 { "lvs3", QCOM_RPM_PM8921_LVS3, &pm8921_switch, "vin_lvs1_3_6" },
925 { "lvs4", QCOM_RPM_PM8921_LVS4, &pm8921_switch, "vin_lvs4_5_7" },
926 { "lvs5", QCOM_RPM_PM8921_LVS5, &pm8921_switch, "vin_lvs4_5_7" },
927 { "lvs6", QCOM_RPM_PM8921_LVS6, &pm8921_switch, "vin_lvs1_3_6" },
928 { "lvs7", QCOM_RPM_PM8921_LVS7, &pm8921_switch, "vin_lvs4_5_7" },
929
930 { "usb-switch", QCOM_RPM_USB_OTG_SWITCH, &pm8921_switch, "vin_5vs" },
931 { "hdmi-switch", QCOM_RPM_HDMI_SWITCH, &pm8921_switch, "vin_5vs" },
932 { "ncp", QCOM_RPM_PM8921_NCP, &pm8921_ncp, "vdd_ncp" },
933 { }
934};
935
936static const struct of_device_id rpm_of_match[] = {
937 { .compatible = "qcom,rpm-pm8018-regulators",
938 .data = &rpm_pm8018_regulators },
939 { .compatible = "qcom,rpm-pm8058-regulators", .data = &rpm_pm8058_regulators },
940 { .compatible = "qcom,rpm-pm8901-regulators", .data = &rpm_pm8901_regulators },
941 { .compatible = "qcom,rpm-pm8921-regulators", .data = &rpm_pm8921_regulators },
942 { }
943};
944MODULE_DEVICE_TABLE(of, rpm_of_match);
945
946static int rpm_reg_probe(struct platform_device *pdev)
947{
948 const struct rpm_regulator_data *reg;
949 const struct of_device_id *match;
950 struct regulator_config config = { };
951 struct regulator_dev *rdev;
952 struct qcom_rpm_reg *vreg;
953 struct qcom_rpm *rpm;
954
955 rpm = dev_get_drvdata(pdev->dev.parent);
956 if (!rpm) {
957 dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
958 return -ENODEV;
959 }
960
961 match = of_match_device(rpm_of_match, &pdev->dev);
962 if (!match) {
963 dev_err(&pdev->dev, "failed to match device\n");
964 return -ENODEV;
965 }
966
967 for (reg = match->data; reg->name; reg++) {
968 vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
969 if (!vreg)
970 return -ENOMEM;
971
972 memcpy(vreg, reg->template, sizeof(*vreg));
973 mutex_init(&vreg->lock);
974
975 vreg->dev = &pdev->dev;
976 vreg->resource = reg->resource;
977 vreg->rpm = rpm;
978
979 vreg->desc.id = -1;
980 vreg->desc.owner = THIS_MODULE;
981 vreg->desc.type = REGULATOR_VOLTAGE;
982 vreg->desc.name = reg->name;
983 vreg->desc.supply_name = reg->supply;
984 vreg->desc.of_match = reg->name;
985 vreg->desc.of_parse_cb = rpm_reg_of_parse;
986
987 config.dev = &pdev->dev;
988 config.driver_data = vreg;
989 rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
990 if (IS_ERR(rdev)) {
991 dev_err(&pdev->dev, "failed to register %s\n", reg->name);
992 return PTR_ERR(rdev);
993 }
994 }
995
996 return 0;
997}
998
999static struct platform_driver rpm_reg_driver = {
1000 .probe = rpm_reg_probe,
1001 .driver = {
1002 .name = "qcom_rpm_reg",
1003 .of_match_table = of_match_ptr(rpm_of_match),
1004 },
1005};
1006
1007static int __init rpm_reg_init(void)
1008{
1009 return platform_driver_register(&rpm_reg_driver);
1010}
1011subsys_initcall(rpm_reg_init);
1012
1013static void __exit rpm_reg_exit(void)
1014{
1015 platform_driver_unregister(&rpm_reg_driver);
1016}
1017module_exit(rpm_reg_exit)
1018
1019MODULE_DESCRIPTION("Qualcomm RPM regulator driver");
1020MODULE_LICENSE("GPL v2");
1021

Warning: That file was not part of the compilation database. It may have many parsing errors.