forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathda903x.c
519 lines (441 loc) · 15 KB
/
da903x.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
/*
* Regulators driver for Dialog Semiconductor DA903x
*
* Copyright (C) 2006-2008 Marvell International Ltd.
* Copyright (C) 2008 Compulab Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/da903x.h>
/* DA9030 Registers */
#define DA9030_INVAL (-1)
#define DA9030_LDO1011 (0x10)
#define DA9030_LDO15 (0x11)
#define DA9030_LDO1416 (0x12)
#define DA9030_LDO1819 (0x13)
#define DA9030_LDO17 (0x14)
#define DA9030_BUCK2DVM1 (0x15)
#define DA9030_BUCK2DVM2 (0x16)
#define DA9030_RCTL11 (0x17)
#define DA9030_RCTL21 (0x18)
#define DA9030_LDO1 (0x90)
#define DA9030_LDO23 (0x91)
#define DA9030_LDO45 (0x92)
#define DA9030_LDO6 (0x93)
#define DA9030_LDO78 (0x94)
#define DA9030_LDO912 (0x95)
#define DA9030_BUCK (0x96)
#define DA9030_RCTL12 (0x97)
#define DA9030_RCTL22 (0x98)
#define DA9030_LDO_UNLOCK (0xa0)
#define DA9030_LDO_UNLOCK_MASK (0xe0)
#define DA9034_OVER1 (0x10)
/* DA9034 Registers */
#define DA9034_INVAL (-1)
#define DA9034_OVER2 (0x11)
#define DA9034_OVER3 (0x12)
#define DA9034_LDO643 (0x13)
#define DA9034_LDO987 (0x14)
#define DA9034_LDO1110 (0x15)
#define DA9034_LDO1312 (0x16)
#define DA9034_LDO1514 (0x17)
#define DA9034_VCC1 (0x20)
#define DA9034_ADTV1 (0x23)
#define DA9034_ADTV2 (0x24)
#define DA9034_AVRC (0x25)
#define DA9034_CDTV1 (0x26)
#define DA9034_CDTV2 (0x27)
#define DA9034_CVRC (0x28)
#define DA9034_SDTV1 (0x29)
#define DA9034_SDTV2 (0x2a)
#define DA9034_SVRC (0x2b)
#define DA9034_MDTV1 (0x32)
#define DA9034_MDTV2 (0x33)
#define DA9034_MVRC (0x34)
struct da903x_regulator_info {
struct regulator_desc desc;
int min_uV;
int max_uV;
int step_uV;
int vol_reg;
int vol_shift;
int vol_nbits;
int update_reg;
int update_bit;
int enable_reg;
int enable_bit;
};
static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
{
return rdev_get_dev(rdev)->parent->parent;
}
static inline int check_range(struct da903x_regulator_info *info,
int min_uV, int max_uV)
{
if (min_uV < info->min_uV || min_uV > info->max_uV)
return -EINVAL;
return 0;
}
/* DA9030/DA9034 common operations */
static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
uint8_t val, mask;
if (check_range(info, min_uV, max_uV)) {
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
return -EINVAL;
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
return da903x_update(da9034_dev, info->vol_reg, val, mask);
}
static int da903x_get_voltage(struct regulator_dev *rdev)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
uint8_t val, mask;
int ret;
ret = da903x_read(da9034_dev, info->vol_reg, &val);
if (ret)
return ret;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
val = (val & mask) >> info->vol_shift;
return info->min_uV + info->step_uV * val;
}
static int da903x_enable(struct regulator_dev *rdev)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
return da903x_set_bits(da9034_dev, info->enable_reg,
1 << info->enable_bit);
}
static int da903x_disable(struct regulator_dev *rdev)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
return da903x_clr_bits(da9034_dev, info->enable_reg,
1 << info->enable_bit);
}
static int da903x_is_enabled(struct regulator_dev *rdev)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
uint8_t reg_val;
int ret;
ret = da903x_read(da9034_dev, info->enable_reg, ®_val);
if (ret)
return ret;
return !!(reg_val & (1 << info->enable_bit));
}
/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da903x_dev = to_da903x_dev(rdev);
uint8_t val, mask;
int ret;
if (check_range(info, min_uV, max_uV)) {
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
return -EINVAL;
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
mask |= DA9030_LDO_UNLOCK_MASK;
/* write twice */
ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
if (ret)
return ret;
return da903x_update(da903x_dev, info->vol_reg, val, mask);
}
static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da903x_dev = to_da903x_dev(rdev);
uint8_t val, mask;
int thresh;
if (check_range(info, min_uV, max_uV)) {
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
return -EINVAL;
}
thresh = (info->max_uV + info->min_uV) / 2;
if (min_uV < thresh) {
val = (thresh - min_uV + info->step_uV - 1) / info->step_uV;
val |= 0x4;
} else {
val = (min_uV - thresh + info->step_uV - 1) / info->step_uV;
}
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
return da903x_update(da903x_dev, info->vol_reg, val, mask);
}
static int da9030_get_ldo14_voltage(struct regulator_dev *rdev)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da903x_dev = to_da903x_dev(rdev);
uint8_t val, mask;
int ret;
ret = da903x_read(da903x_dev, info->vol_reg, &val);
if (ret)
return ret;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
val = (val & mask) >> info->vol_shift;
if (val & 0x4)
return info->min_uV + info->step_uV * (3 - (val & ~0x4));
else
return (info->max_uV + info->min_uV) / 2 +
info->step_uV * (val & ~0x4);
}
/* DA9034 specific operations */
static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
uint8_t val, mask;
int ret;
if (check_range(info, min_uV, max_uV)) {
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
return -EINVAL;
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
if (ret)
return ret;
ret = da903x_set_bits(da9034_dev, info->update_reg,
1 << info->update_bit);
return ret;
}
static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
uint8_t val, mask;
if (check_range(info, min_uV, max_uV)) {
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
return -EINVAL;
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
val = (val > 7 || val < 20) ? 8 : val - 12;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
return da903x_update(da9034_dev, info->vol_reg, val, mask);
}
static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
uint8_t val, mask;
int ret;
ret = da903x_read(da9034_dev, info->vol_reg, &val);
if (ret)
return ret;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
val = (val & mask) >> info->vol_shift;
if (val >= 8)
return 2700000 + info->step_uV * (val - 8);
return info->min_uV + info->step_uV * val;
}
static struct regulator_ops da903x_regulator_ldo_ops = {
.set_voltage = da903x_set_ldo_voltage,
.get_voltage = da903x_get_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
};
/* NOTE: this is dedicated for the insane DA9030 LDO14 */
static struct regulator_ops da9030_regulator_ldo14_ops = {
.set_voltage = da9030_set_ldo14_voltage,
.get_voltage = da9030_get_ldo14_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
};
/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
static struct regulator_ops da9030_regulator_ldo1_15_ops = {
.set_voltage = da9030_set_ldo1_15_voltage,
.get_voltage = da903x_get_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
};
static struct regulator_ops da9034_regulator_dvc_ops = {
.set_voltage = da9034_set_dvc_voltage,
.get_voltage = da903x_get_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
};
/* NOTE: this is dedicated for the insane LDO12 */
static struct regulator_ops da9034_regulator_ldo12_ops = {
.set_voltage = da9034_set_ldo12_voltage,
.get_voltage = da9034_get_ldo12_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
};
#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
{ \
.desc = { \
.name = "LDO" #_id, \
.ops = &da903x_regulator_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.id = _pmic##_ID_LDO##_id, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
.max_uV = (max) * 1000, \
.step_uV = (step) * 1000, \
.vol_reg = _pmic##_##vreg, \
.vol_shift = (shift), \
.vol_nbits = (nbits), \
.enable_reg = _pmic##_##ereg, \
.enable_bit = (ebit), \
}
#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
{ \
.desc = { \
.name = #_id, \
.ops = &da9034_regulator_dvc_ops, \
.type = REGULATOR_VOLTAGE, \
.id = DA9034_ID_##_id, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
.max_uV = (max) * 1000, \
.step_uV = (step) * 1000, \
.vol_reg = DA9034_##vreg, \
.vol_shift = (0), \
.vol_nbits = (nbits), \
.update_reg = DA9034_##ureg, \
.update_bit = (ubit), \
.enable_reg = DA9034_##ereg, \
.enable_bit = (ebit), \
}
#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
static struct da903x_regulator_info da903x_regulator_info[] = {
/* DA9030 */
DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
/* DA9034 */
DA9034_DVC(BUCK1, 725, 1500, 25, ADTV1, 5, VCC1, 0, OVER1, 0),
DA9034_DVC(BUCK2, 725, 1500, 25, CDTV1, 5, VCC1, 2, OVER1, 1),
DA9034_DVC(LDO2, 725, 1500, 25, SDTV1, 5, VCC1, 4, OVER1, 2),
DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
};
static inline struct da903x_regulator_info *find_regulator_info(int id)
{
struct da903x_regulator_info *ri;
int i;
for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
ri = &da903x_regulator_info[i];
if (ri->desc.id == id)
return ri;
}
return NULL;
}
static int __devinit da903x_regulator_probe(struct platform_device *pdev)
{
struct da903x_regulator_info *ri = NULL;
struct regulator_dev *rdev;
ri = find_regulator_info(pdev->id);
if (ri == NULL) {
dev_err(&pdev->dev, "invalid regulator ID specified\n");
return -EINVAL;
}
/* Workaround for the weird LDO12 voltage setting */
if (ri->desc.id == DA9034_ID_LDO12)
ri->desc.ops = &da9034_regulator_ldo12_ops;
if (ri->desc.id == DA9030_ID_LDO14)
ri->desc.ops = &da9030_regulator_ldo14_ops;
if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)
ri->desc.ops = &da9030_regulator_ldo1_15_ops;
rdev = regulator_register(&ri->desc, &pdev->dev,
pdev->dev.platform_data, ri);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register regulator %s\n",
ri->desc.name);
return PTR_ERR(rdev);
}
platform_set_drvdata(pdev, rdev);
return 0;
}
static int __devexit da903x_regulator_remove(struct platform_device *pdev)
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
regulator_unregister(rdev);
return 0;
}
static struct platform_driver da903x_regulator_driver = {
.driver = {
.name = "da903x-regulator",
.owner = THIS_MODULE,
},
.probe = da903x_regulator_probe,
.remove = __devexit_p(da903x_regulator_remove),
};
static int __init da903x_regulator_init(void)
{
return platform_driver_register(&da903x_regulator_driver);
}
subsys_initcall(da903x_regulator_init);
static void __exit da903x_regulator_exit(void)
{
platform_driver_unregister(&da903x_regulator_driver);
}
module_exit(da903x_regulator_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Eric Miao <[email protected]>"
"Mike Rapoport <[email protected]>");
MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
MODULE_ALIAS("platform:da903x-regulator");