2 * Regulators driver for Dialog Semiconductor DA903x
4 * Copyright (C) 2006-2008 Marvell International Ltd.
5 * Copyright (C) 2008 Compulab Ltd.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/err.h>
15 #include <linux/platform_device.h>
16 #include <linux/regulator/driver.h>
17 #include <linux/regulator/machine.h>
18 #include <linux/mfd/da903x.h>
20 /* DA9030 Registers */
21 #define DA9030_INVAL (-1)
22 #define DA9030_LDO1011 (0x10)
23 #define DA9030_LDO15 (0x11)
24 #define DA9030_LDO1416 (0x12)
25 #define DA9030_LDO1819 (0x13)
26 #define DA9030_LDO17 (0x14)
27 #define DA9030_BUCK2DVM1 (0x15)
28 #define DA9030_BUCK2DVM2 (0x16)
29 #define DA9030_RCTL11 (0x17)
30 #define DA9030_RCTL21 (0x18)
31 #define DA9030_LDO1 (0x90)
32 #define DA9030_LDO23 (0x91)
33 #define DA9030_LDO45 (0x92)
34 #define DA9030_LDO6 (0x93)
35 #define DA9030_LDO78 (0x94)
36 #define DA9030_LDO912 (0x95)
37 #define DA9030_BUCK (0x96)
38 #define DA9030_RCTL12 (0x97)
39 #define DA9030_RCTL22 (0x98)
40 #define DA9030_LDO_UNLOCK (0xa0)
41 #define DA9030_LDO_UNLOCK_MASK (0xe0)
42 #define DA9034_OVER1 (0x10)
44 /* DA9034 Registers */
45 #define DA9034_INVAL (-1)
46 #define DA9034_OVER2 (0x11)
47 #define DA9034_OVER3 (0x12)
48 #define DA9034_LDO643 (0x13)
49 #define DA9034_LDO987 (0x14)
50 #define DA9034_LDO1110 (0x15)
51 #define DA9034_LDO1312 (0x16)
52 #define DA9034_LDO1514 (0x17)
53 #define DA9034_VCC1 (0x20)
54 #define DA9034_ADTV1 (0x23)
55 #define DA9034_ADTV2 (0x24)
56 #define DA9034_AVRC (0x25)
57 #define DA9034_CDTV1 (0x26)
58 #define DA9034_CDTV2 (0x27)
59 #define DA9034_CVRC (0x28)
60 #define DA9034_SDTV1 (0x29)
61 #define DA9034_SDTV2 (0x2a)
62 #define DA9034_SVRC (0x2b)
63 #define DA9034_MDTV1 (0x32)
64 #define DA9034_MDTV2 (0x33)
65 #define DA9034_MVRC (0x34)
67 struct da903x_regulator_info
{
68 struct regulator_desc desc
;
82 static inline int check_range(struct da903x_regulator_info
*info
,
83 int min_uV
, int max_uV
)
85 if (min_uV
< info
->min_uV
|| min_uV
> info
->max_uV
)
91 /* DA9030/DA9034 common operations */
92 static int da903x_set_ldo_voltage(struct regulator_dev
*rdev
,
93 int min_uV
, int max_uV
)
95 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
96 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
99 if (check_range(info
, min_uV
, max_uV
)) {
100 pr_err("invalid voltage range (%d, %d) uV", min_uV
, max_uV
);
104 val
= (min_uV
- info
->min_uV
+ info
->step_uV
- 1) / info
->step_uV
;
105 val
<<= info
->vol_shift
;
106 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
108 return da903x_update(da9034_dev
, info
->vol_reg
, val
, mask
);
111 static int da903x_get_voltage(struct regulator_dev
*rdev
)
113 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
114 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
118 ret
= da903x_read(da9034_dev
, info
->vol_reg
, &val
);
122 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
123 val
= (val
& mask
) >> info
->vol_shift
;
125 return info
->min_uV
+ info
->step_uV
* val
;
128 static int da903x_enable(struct regulator_dev
*rdev
)
130 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
131 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
133 return da903x_set_bits(da9034_dev
, info
->enable_reg
,
134 1 << info
->enable_bit
);
137 static int da903x_disable(struct regulator_dev
*rdev
)
139 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
140 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
142 return da903x_clr_bits(da9034_dev
, info
->enable_reg
,
143 1 << info
->enable_bit
);
146 static int da903x_is_enabled(struct regulator_dev
*rdev
)
148 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
149 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
153 ret
= da903x_read(da9034_dev
, info
->enable_reg
, ®_val
);
157 return reg_val
& (1 << info
->enable_bit
);
160 /* DA9030 specific operations */
161 static int da9030_set_ldo1_15_voltage(struct regulator_dev
*rdev
,
162 int min_uV
, int max_uV
)
164 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
165 struct device
*da903x_dev
= rdev_get_dev(rdev
)->parent
;
169 if (check_range(info
, min_uV
, max_uV
)) {
170 pr_err("invalid voltage range (%d, %d) uV", min_uV
, max_uV
);
174 val
= (min_uV
- info
->min_uV
+ info
->step_uV
- 1) / info
->step_uV
;
175 val
<<= info
->vol_shift
;
176 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
177 val
|= DA9030_LDO_UNLOCK
; /* have to set UNLOCK bits */
178 mask
|= DA9030_LDO_UNLOCK_MASK
;
181 ret
= da903x_update(da903x_dev
, info
->vol_reg
, val
, mask
);
185 return da903x_update(da903x_dev
, info
->vol_reg
, val
, mask
);
188 static int da9030_set_ldo14_voltage(struct regulator_dev
*rdev
,
189 int min_uV
, int max_uV
)
191 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
192 struct device
*da903x_dev
= rdev_get_dev(rdev
)->parent
;
196 if (check_range(info
, min_uV
, max_uV
)) {
197 pr_err("invalid voltage range (%d, %d) uV", min_uV
, max_uV
);
201 thresh
= (info
->max_uV
+ info
->min_uV
) / 2;
202 if (min_uV
< thresh
) {
203 val
= (thresh
- min_uV
+ info
->step_uV
- 1) / info
->step_uV
;
206 val
= (min_uV
- thresh
+ info
->step_uV
- 1) / info
->step_uV
;
209 val
<<= info
->vol_shift
;
210 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
212 return da903x_update(da903x_dev
, info
->vol_reg
, val
, mask
);
215 static int da9030_get_ldo14_voltage(struct regulator_dev
*rdev
)
217 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
218 struct device
*da903x_dev
= rdev_get_dev(rdev
)->parent
;
222 ret
= da903x_read(da903x_dev
, info
->vol_reg
, &val
);
226 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
227 val
= (val
& mask
) >> info
->vol_shift
;
230 return info
->min_uV
+ info
->step_uV
* (3 - (val
& ~0x4));
232 return (info
->max_uV
+ info
->min_uV
) / 2 +
233 info
->step_uV
* (val
& ~0x4);
236 /* DA9034 specific operations */
237 static int da9034_set_dvc_voltage(struct regulator_dev
*rdev
,
238 int min_uV
, int max_uV
)
240 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
241 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
245 if (check_range(info
, min_uV
, max_uV
)) {
246 pr_err("invalid voltage range (%d, %d) uV", min_uV
, max_uV
);
250 val
= (min_uV
- info
->min_uV
+ info
->step_uV
- 1) / info
->step_uV
;
251 val
<<= info
->vol_shift
;
252 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
254 ret
= da903x_update(da9034_dev
, info
->vol_reg
, val
, mask
);
258 ret
= da903x_set_bits(da9034_dev
, info
->update_reg
,
259 1 << info
->update_bit
);
263 static int da9034_set_ldo12_voltage(struct regulator_dev
*rdev
,
264 int min_uV
, int max_uV
)
266 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
267 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
270 if (check_range(info
, min_uV
, max_uV
)) {
271 pr_err("invalid voltage range (%d, %d) uV", min_uV
, max_uV
);
275 val
= (min_uV
- info
->min_uV
+ info
->step_uV
- 1) / info
->step_uV
;
276 val
= (val
> 7 || val
< 20) ? 8 : val
- 12;
277 val
<<= info
->vol_shift
;
278 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
280 return da903x_update(da9034_dev
, info
->vol_reg
, val
, mask
);
283 static int da9034_get_ldo12_voltage(struct regulator_dev
*rdev
)
285 struct da903x_regulator_info
*info
= rdev_get_drvdata(rdev
);
286 struct device
*da9034_dev
= rdev_get_dev(rdev
)->parent
;
290 ret
= da903x_read(da9034_dev
, info
->vol_reg
, &val
);
294 mask
= ((1 << info
->vol_nbits
) - 1) << info
->vol_shift
;
295 val
= (val
& mask
) >> info
->vol_shift
;
298 return 2700000 + info
->step_uV
* (val
- 8);
300 return info
->min_uV
+ info
->step_uV
* val
;
303 static struct regulator_ops da903x_regulator_ldo_ops
= {
304 .set_voltage
= da903x_set_ldo_voltage
,
305 .get_voltage
= da903x_get_voltage
,
306 .enable
= da903x_enable
,
307 .disable
= da903x_disable
,
308 .is_enabled
= da903x_is_enabled
,
311 /* NOTE: this is dedicated for the insane DA9030 LDO14 */
312 static struct regulator_ops da9030_regulator_ldo14_ops
= {
313 .set_voltage
= da9030_set_ldo14_voltage
,
314 .get_voltage
= da9030_get_ldo14_voltage
,
315 .enable
= da903x_enable
,
316 .disable
= da903x_disable
,
317 .is_enabled
= da903x_is_enabled
,
320 /* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
321 static struct regulator_ops da9030_regulator_ldo1_15_ops
= {
322 .set_voltage
= da9030_set_ldo1_15_voltage
,
323 .get_voltage
= da903x_get_voltage
,
324 .enable
= da903x_enable
,
325 .disable
= da903x_disable
,
326 .is_enabled
= da903x_is_enabled
,
329 static struct regulator_ops da9034_regulator_dvc_ops
= {
330 .set_voltage
= da9034_set_dvc_voltage
,
331 .get_voltage
= da903x_get_voltage
,
332 .enable
= da903x_enable
,
333 .disable
= da903x_disable
,
334 .is_enabled
= da903x_is_enabled
,
337 /* NOTE: this is dedicated for the insane LDO12 */
338 static struct regulator_ops da9034_regulator_ldo12_ops
= {
339 .set_voltage
= da9034_set_ldo12_voltage
,
340 .get_voltage
= da9034_get_ldo12_voltage
,
341 .enable
= da903x_enable
,
342 .disable
= da903x_disable
,
343 .is_enabled
= da903x_is_enabled
,
346 #define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
349 .name = "LDO" #_id, \
350 .ops = &da903x_regulator_ldo_ops, \
351 .type = REGULATOR_VOLTAGE, \
352 .id = _pmic##_ID_LDO##_id, \
353 .owner = THIS_MODULE, \
355 .min_uV = (min) * 1000, \
356 .max_uV = (max) * 1000, \
357 .step_uV = (step) * 1000, \
358 .vol_reg = _pmic##_##vreg, \
359 .vol_shift = (shift), \
360 .vol_nbits = (nbits), \
361 .enable_reg = _pmic##_##ereg, \
362 .enable_bit = (ebit), \
365 #define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
369 .ops = &da9034_regulator_dvc_ops, \
370 .type = REGULATOR_VOLTAGE, \
371 .id = DA9034_ID_##_id, \
372 .owner = THIS_MODULE, \
374 .min_uV = (min) * 1000, \
375 .max_uV = (max) * 1000, \
376 .step_uV = (step) * 1000, \
377 .vol_reg = DA9034_##vreg, \
379 .vol_nbits = (nbits), \
380 .update_reg = DA9034_##ureg, \
381 .update_bit = (ubit), \
382 .enable_reg = DA9034_##ereg, \
383 .enable_bit = (ebit), \
386 #define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
387 DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
389 #define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
390 DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
392 static struct da903x_regulator_info da903x_regulator_info
[] = {
394 DA9030_LDO( 1, 1200, 3200, 100, LDO1
, 0, 5, RCTL12
, 1),
395 DA9030_LDO( 2, 1800, 3200, 100, LDO23
, 0, 4, RCTL12
, 2),
396 DA9030_LDO( 3, 1800, 3200, 100, LDO23
, 4, 4, RCTL12
, 3),
397 DA9030_LDO( 4, 1800, 3200, 100, LDO45
, 0, 4, RCTL12
, 4),
398 DA9030_LDO( 5, 1800, 3200, 100, LDO45
, 4, 4, RCTL12
, 5),
399 DA9030_LDO( 6, 1800, 3200, 100, LDO6
, 0, 4, RCTL12
, 6),
400 DA9030_LDO( 7, 1800, 3200, 100, LDO78
, 0, 4, RCTL12
, 7),
401 DA9030_LDO( 8, 1800, 3200, 100, LDO78
, 4, 4, RCTL22
, 0),
402 DA9030_LDO( 9, 1800, 3200, 100, LDO912
, 0, 4, RCTL22
, 1),
403 DA9030_LDO(10, 1800, 3200, 100, LDO1011
, 0, 4, RCTL22
, 2),
404 DA9030_LDO(11, 1800, 3200, 100, LDO1011
, 4, 4, RCTL22
, 3),
405 DA9030_LDO(12, 1800, 3200, 100, LDO912
, 4, 4, RCTL22
, 4),
406 DA9030_LDO(14, 2760, 2940, 30, LDO1416
, 0, 3, RCTL11
, 4),
407 DA9030_LDO(15, 1100, 2650, 50, LDO15
, 0, 5, RCTL11
, 5),
408 DA9030_LDO(16, 1100, 2650, 50, LDO1416
, 3, 5, RCTL11
, 6),
409 DA9030_LDO(17, 1800, 3200, 100, LDO17
, 0, 4, RCTL11
, 7),
410 DA9030_LDO(18, 1800, 3200, 100, LDO1819
, 0, 4, RCTL21
, 2),
411 DA9030_LDO(19, 1800, 3200, 100, LDO1819
, 4, 4, RCTL21
, 1),
412 DA9030_LDO(13, 2100, 2100, 0, INVAL
, 0, 0, RCTL11
, 3), /* fixed @2.1V */
415 DA9034_DVC(BUCK1
, 725, 1500, 25, ADTV1
, 5, VCC1
, 0, OVER1
, 0),
416 DA9034_DVC(BUCK2
, 725, 1500, 25, CDTV1
, 5, VCC1
, 2, OVER1
, 1),
417 DA9034_DVC(LDO2
, 725, 1500, 25, SDTV1
, 5, VCC1
, 4, OVER1
, 2),
418 DA9034_DVC(LDO1
, 1700, 2075, 25, MDTV1
, 4, VCC1
, 6, OVER3
, 4),
420 DA9034_LDO( 3, 1800, 3300, 100, LDO643
, 0, 4, OVER3
, 5),
421 DA9034_LDO( 4, 1800, 2900,1100, LDO643
, 4, 1, OVER3
, 6),
422 DA9034_LDO( 6, 2500, 2850, 50, LDO643
, 5, 3, OVER2
, 0),
423 DA9034_LDO( 7, 2700, 3050, 50, LDO987
, 0, 3, OVER2
, 1),
424 DA9034_LDO( 8, 2700, 2850, 50, LDO987
, 3, 2, OVER2
, 2),
425 DA9034_LDO( 9, 2700, 3050, 50, LDO987
, 5, 3, OVER2
, 3),
426 DA9034_LDO(10, 2700, 3050, 50, LDO1110
, 0, 3, OVER2
, 4),
427 DA9034_LDO(11, 1800, 3300, 100, LDO1110
, 4, 4, OVER2
, 5),
428 DA9034_LDO(12, 1700, 3050, 50, LDO1312
, 0, 4, OVER3
, 6),
429 DA9034_LDO(13, 1800, 3300, 100, LDO1312
, 4, 4, OVER2
, 7),
430 DA9034_LDO(14, 1800, 3300, 100, LDO1514
, 0, 4, OVER3
, 0),
431 DA9034_LDO(15, 1800, 3300, 100, LDO1514
, 4, 4, OVER3
, 1),
432 DA9034_LDO(5, 3100, 3100, 0, INVAL
, 0, 0, OVER3
, 7), /* fixed @3.1V */
435 static inline struct da903x_regulator_info
*find_regulator_info(int id
)
437 struct da903x_regulator_info
*ri
;
440 for (i
= 0; i
< ARRAY_SIZE(da903x_regulator_info
); i
++) {
441 ri
= &da903x_regulator_info
[i
];
442 if (ri
->desc
.id
== id
)
448 static int __devinit
da903x_regulator_probe(struct platform_device
*pdev
)
450 struct da903x_regulator_info
*ri
= NULL
;
451 struct regulator_dev
*rdev
;
453 ri
= find_regulator_info(pdev
->id
);
455 dev_err(&pdev
->dev
, "invalid regulator ID specified\n");
459 /* Workaround for the weird LDO12 voltage setting */
460 if (ri
->desc
.id
== DA9034_ID_LDO12
)
461 ri
->desc
.ops
= &da9034_regulator_ldo12_ops
;
463 if (ri
->desc
.id
== DA9030_ID_LDO14
)
464 ri
->desc
.ops
= &da9030_regulator_ldo14_ops
;
466 if (ri
->desc
.id
== DA9030_ID_LDO1
|| ri
->desc
.id
== DA9030_ID_LDO15
)
467 ri
->desc
.ops
= &da9030_regulator_ldo1_15_ops
;
469 rdev
= regulator_register(&ri
->desc
, pdev
->dev
.parent
, ri
);
471 dev_err(&pdev
->dev
, "failed to register regulator %s\n",
473 return PTR_ERR(rdev
);
476 platform_set_drvdata(pdev
, rdev
);
480 static int __devexit
da903x_regulator_remove(struct platform_device
*pdev
)
482 struct regulator_dev
*rdev
= platform_get_drvdata(pdev
);
484 regulator_unregister(rdev
);
488 static struct platform_driver da903x_regulator_driver
= {
490 .name
= "da903x-regulator",
491 .owner
= THIS_MODULE
,
493 .probe
= da903x_regulator_probe
,
494 .remove
= da903x_regulator_remove
,
497 static int __init
da903x_regulator_init(void)
499 return platform_driver_register(&da903x_regulator_driver
);
501 module_init(da903x_regulator_init
);
503 static void __exit
da903x_regulator_exit(void)
505 platform_driver_unregister(&da903x_regulator_driver
);
507 module_exit(da903x_regulator_exit
);
509 MODULE_LICENSE("GPL");
510 MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
511 "Mike Rapoport <mike@compulab.co.il>");
512 MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
513 MODULE_ALIAS("platform:da903x-regulator");