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 /* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */
68 #define DA9035_OVER3 (0x12)
69 #define DA9035_VCC2 (0x1f)
70 #define DA9035_3DTV1 (0x2c)
71 #define DA9035_3DTV2 (0x2d)
72 #define DA9035_3VRC (0x2e)
73 #define DA9035_AUTOSKIP (0x2f)
75 struct da903x_regulator_info {
76 struct regulator_desc desc;
90 static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
92 return rdev_get_dev(rdev)->parent->parent;
95 static inline int check_range(struct da903x_regulator_info *info,
96 int min_uV, int max_uV)
98 if (min_uV < info->min_uV || min_uV > info->max_uV)
104 /* DA9030/DA9034 common operations */
105 static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
106 int min_uV, int max_uV)
108 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
109 struct device *da9034_dev = to_da903x_dev(rdev);
112 if (check_range(info, min_uV, max_uV)) {
113 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
117 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
118 val <<= info->vol_shift;
119 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
121 return da903x_update(da9034_dev, info->vol_reg, val, mask);
124 static int da903x_get_voltage(struct regulator_dev *rdev)
126 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
127 struct device *da9034_dev = to_da903x_dev(rdev);
131 ret = da903x_read(da9034_dev, info->vol_reg, &val);
135 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
136 val = (val & mask) >> info->vol_shift;
138 return info->min_uV + info->step_uV * val;
141 static int da903x_enable(struct regulator_dev *rdev)
143 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
144 struct device *da9034_dev = to_da903x_dev(rdev);
146 return da903x_set_bits(da9034_dev, info->enable_reg,
147 1 << info->enable_bit);
150 static int da903x_disable(struct regulator_dev *rdev)
152 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
153 struct device *da9034_dev = to_da903x_dev(rdev);
155 return da903x_clr_bits(da9034_dev, info->enable_reg,
156 1 << info->enable_bit);
159 static int da903x_is_enabled(struct regulator_dev *rdev)
161 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
162 struct device *da9034_dev = to_da903x_dev(rdev);
166 ret = da903x_read(da9034_dev, info->enable_reg, ®_val);
170 return !!(reg_val & (1 << info->enable_bit));
173 /* DA9030 specific operations */
174 static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
175 int min_uV, int max_uV)
177 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
178 struct device *da903x_dev = to_da903x_dev(rdev);
182 if (check_range(info, min_uV, max_uV)) {
183 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
187 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
188 val <<= info->vol_shift;
189 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
190 val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
191 mask |= DA9030_LDO_UNLOCK_MASK;
194 ret = da903x_update(da903x_dev, info->vol_reg, val, mask);
198 return da903x_update(da903x_dev, info->vol_reg, val, mask);
201 static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
202 int min_uV, int max_uV)
204 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
205 struct device *da903x_dev = to_da903x_dev(rdev);
209 if (check_range(info, min_uV, max_uV)) {
210 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
214 thresh = (info->max_uV + info->min_uV) / 2;
215 if (min_uV < thresh) {
216 val = (thresh - min_uV + info->step_uV - 1) / info->step_uV;
219 val = (min_uV - thresh + info->step_uV - 1) / info->step_uV;
222 val <<= info->vol_shift;
223 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
225 return da903x_update(da903x_dev, info->vol_reg, val, mask);
228 static int da9030_get_ldo14_voltage(struct regulator_dev *rdev)
230 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
231 struct device *da903x_dev = to_da903x_dev(rdev);
235 ret = da903x_read(da903x_dev, info->vol_reg, &val);
239 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
240 val = (val & mask) >> info->vol_shift;
243 return info->min_uV + info->step_uV * (3 - (val & ~0x4));
245 return (info->max_uV + info->min_uV) / 2 +
246 info->step_uV * (val & ~0x4);
249 /* DA9034 specific operations */
250 static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
251 int min_uV, int max_uV)
253 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
254 struct device *da9034_dev = to_da903x_dev(rdev);
258 if (check_range(info, min_uV, max_uV)) {
259 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
263 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
264 val <<= info->vol_shift;
265 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
267 ret = da903x_update(da9034_dev, info->vol_reg, val, mask);
271 ret = da903x_set_bits(da9034_dev, info->update_reg,
272 1 << info->update_bit);
276 static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
277 int min_uV, int max_uV)
279 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
280 struct device *da9034_dev = to_da903x_dev(rdev);
283 if (check_range(info, min_uV, max_uV)) {
284 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);
288 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
289 val = (val > 7 || val < 20) ? 8 : val - 12;
290 val <<= info->vol_shift;
291 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
293 return da903x_update(da9034_dev, info->vol_reg, val, mask);
296 static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
298 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
299 struct device *da9034_dev = to_da903x_dev(rdev);
303 ret = da903x_read(da9034_dev, info->vol_reg, &val);
307 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
308 val = (val & mask) >> info->vol_shift;
311 return 2700000 + info->step_uV * (val - 8);
313 return info->min_uV + info->step_uV * val;
316 static struct regulator_ops da903x_regulator_ldo_ops = {
317 .set_voltage = da903x_set_ldo_voltage,
318 .get_voltage = da903x_get_voltage,
319 .enable = da903x_enable,
320 .disable = da903x_disable,
321 .is_enabled = da903x_is_enabled,
324 /* NOTE: this is dedicated for the insane DA9030 LDO14 */
325 static struct regulator_ops da9030_regulator_ldo14_ops = {
326 .set_voltage = da9030_set_ldo14_voltage,
327 .get_voltage = da9030_get_ldo14_voltage,
328 .enable = da903x_enable,
329 .disable = da903x_disable,
330 .is_enabled = da903x_is_enabled,
333 /* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */
334 static struct regulator_ops da9030_regulator_ldo1_15_ops = {
335 .set_voltage = da9030_set_ldo1_15_voltage,
336 .get_voltage = da903x_get_voltage,
337 .enable = da903x_enable,
338 .disable = da903x_disable,
339 .is_enabled = da903x_is_enabled,
342 static struct regulator_ops da9034_regulator_dvc_ops = {
343 .set_voltage = da9034_set_dvc_voltage,
344 .get_voltage = da903x_get_voltage,
345 .enable = da903x_enable,
346 .disable = da903x_disable,
347 .is_enabled = da903x_is_enabled,
350 /* NOTE: this is dedicated for the insane LDO12 */
351 static struct regulator_ops da9034_regulator_ldo12_ops = {
352 .set_voltage = da9034_set_ldo12_voltage,
353 .get_voltage = da9034_get_ldo12_voltage,
354 .enable = da903x_enable,
355 .disable = da903x_disable,
356 .is_enabled = da903x_is_enabled,
359 #define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \
362 .name = "LDO" #_id, \
363 .ops = &da903x_regulator_ldo_ops, \
364 .type = REGULATOR_VOLTAGE, \
365 .id = _pmic##_ID_LDO##_id, \
366 .owner = THIS_MODULE, \
368 .min_uV = (min) * 1000, \
369 .max_uV = (max) * 1000, \
370 .step_uV = (step) * 1000, \
371 .vol_reg = _pmic##_##vreg, \
372 .vol_shift = (shift), \
373 .vol_nbits = (nbits), \
374 .enable_reg = _pmic##_##ereg, \
375 .enable_bit = (ebit), \
378 #define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
382 .ops = &da9034_regulator_dvc_ops, \
383 .type = REGULATOR_VOLTAGE, \
384 .id = DA9030_ID_##_id, \
385 .owner = THIS_MODULE, \
387 .min_uV = (min) * 1000, \
388 .max_uV = (max) * 1000, \
389 .step_uV = (step) * 1000, \
390 .vol_reg = DA9030_##vreg, \
392 .vol_nbits = (nbits), \
393 .update_reg = DA9030_##ureg, \
394 .update_bit = (ubit), \
395 .enable_reg = DA9030_##ereg, \
396 .enable_bit = (ebit), \
399 #define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
403 .ops = &da9034_regulator_dvc_ops, \
404 .type = REGULATOR_VOLTAGE, \
405 .id = DA9034_ID_##_id, \
406 .owner = THIS_MODULE, \
408 .min_uV = (min) * 1000, \
409 .max_uV = (max) * 1000, \
410 .step_uV = (step) * 1000, \
411 .vol_reg = DA9034_##vreg, \
413 .vol_nbits = (nbits), \
414 .update_reg = DA9034_##ureg, \
415 .update_bit = (ubit), \
416 .enable_reg = DA9034_##ereg, \
417 .enable_bit = (ebit), \
420 #define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
424 .ops = &da9034_regulator_dvc_ops, \
425 .type = REGULATOR_VOLTAGE, \
426 .id = DA9035_ID_##_id, \
427 .owner = THIS_MODULE, \
429 .min_uV = (min) * 1000, \
430 .max_uV = (max) * 1000, \
431 .step_uV = (step) * 1000, \
432 .vol_reg = DA9035_##vreg, \
434 .vol_nbits = (nbits), \
435 .update_reg = DA9035_##ureg, \
436 .update_bit = (ubit), \
437 .enable_reg = DA9035_##ereg, \
438 .enable_bit = (ebit), \
441 #define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
442 DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
444 #define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
445 DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
447 static struct da903x_regulator_info da903x_regulator_info[] = {
449 DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
451 DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
452 DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
453 DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
454 DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),
455 DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),
456 DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),
457 DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),
458 DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),
459 DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),
460 DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),
461 DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),
462 DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),
463 DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),
464 DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),
465 DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),
466 DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),
467 DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),
468 DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),
469 DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
472 DA9034_DVC(BUCK1, 725, 1500, 25, ADTV1, 5, VCC1, 0, OVER1, 0),
473 DA9034_DVC(BUCK2, 725, 1500, 25, CDTV1, 5, VCC1, 2, OVER1, 1),
474 DA9034_DVC(LDO2, 725, 1500, 25, SDTV1, 5, VCC1, 4, OVER1, 2),
475 DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
477 DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
478 DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),
479 DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),
480 DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),
481 DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),
482 DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),
483 DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),
484 DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),
485 DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),
486 DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),
487 DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
488 DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
489 DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
492 DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
495 static inline struct da903x_regulator_info *find_regulator_info(int id)
497 struct da903x_regulator_info *ri;
500 for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {
501 ri = &da903x_regulator_info[i];
502 if (ri->desc.id == id)
508 static int __devinit da903x_regulator_probe(struct platform_device *pdev)
510 struct da903x_regulator_info *ri = NULL;
511 struct regulator_dev *rdev;
513 ri = find_regulator_info(pdev->id);
515 dev_err(&pdev->dev, "invalid regulator ID specified\n");
519 /* Workaround for the weird LDO12 voltage setting */
520 if (ri->desc.id == DA9034_ID_LDO12)
521 ri->desc.ops = &da9034_regulator_ldo12_ops;
523 if (ri->desc.id == DA9030_ID_LDO14)
524 ri->desc.ops = &da9030_regulator_ldo14_ops;
526 if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)
527 ri->desc.ops = &da9030_regulator_ldo1_15_ops;
529 rdev = regulator_register(&ri->desc, &pdev->dev,
530 pdev->dev.platform_data, ri);
532 dev_err(&pdev->dev, "failed to register regulator %s\n",
534 return PTR_ERR(rdev);
537 platform_set_drvdata(pdev, rdev);
541 static int __devexit da903x_regulator_remove(struct platform_device *pdev)
543 struct regulator_dev *rdev = platform_get_drvdata(pdev);
545 regulator_unregister(rdev);
549 static struct platform_driver da903x_regulator_driver = {
551 .name = "da903x-regulator",
552 .owner = THIS_MODULE,
554 .probe = da903x_regulator_probe,
555 .remove = __devexit_p(da903x_regulator_remove),
558 static int __init da903x_regulator_init(void)
560 return platform_driver_register(&da903x_regulator_driver);
562 subsys_initcall(da903x_regulator_init);
564 static void __exit da903x_regulator_exit(void)
566 platform_driver_unregister(&da903x_regulator_driver);
568 module_exit(da903x_regulator_exit);
570 MODULE_LICENSE("GPL");
571 MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
572 "Mike Rapoport <mike@compulab.co.il>");
573 MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");
574 MODULE_ALIAS("platform:da903x-regulator");