1 /*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License v2
5 *
6 * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
7 * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
8 *
9 * AB8500 peripheral regulators
10 *
11 * AB8500 supports the following regulators:
12 * VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
13 */
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/err.h>
18 #include <linux/platform_device.h>
19 #include <linux/mfd/abx500.h>
20 #include <linux/mfd/abx500/ab8500.h>
21 #include <linux/regulator/driver.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/regulator/ab8500.h>
24
25 /**
26 * struct ab8500_regulator_info - ab8500 regulator information
27 * @dev: device pointer
28 * @desc: regulator description
29 * @regulator_dev: regulator device
30 * @max_uV: maximum voltage (for variable voltage supplies)
31 * @min_uV: minimum voltage (for variable voltage supplies)
32 * @fixed_uV: typical voltage (for fixed voltage supplies)
33 * @update_bank: bank to control on/off
34 * @update_reg: register to control on/off
35 * @update_mask: mask to enable/disable regulator
36 * @update_val_enable: bits to enable the regulator in normal (high power) mode
37 * @voltage_bank: bank to control regulator voltage
38 * @voltage_reg: register to control regulator voltage
39 * @voltage_mask: mask to control regulator voltage
40 * @voltages: supported voltage table
41 * @voltages_len: number of supported voltages for the regulator
42 * @delay: startup/set voltage delay in us
43 */
44 struct ab8500_regulator_info {
45 struct device *dev;
46 struct regulator_desc desc;
47 struct regulator_dev *regulator;
48 int max_uV;
49 int min_uV;
50 int fixed_uV;
51 u8 update_bank;
52 u8 update_reg;
53 u8 update_mask;
54 u8 update_val_enable;
55 u8 voltage_bank;
56 u8 voltage_reg;
57 u8 voltage_mask;
58 int const *voltages;
59 int voltages_len;
60 unsigned int delay;
61 };
62
63 /* voltage tables for the vauxn/vintcore supplies */
64 static const int ldo_vauxn_voltages[] = {
65 1100000,
66 1200000,
67 1300000,
68 1400000,
69 1500000,
70 1800000,
71 1850000,
72 1900000,
73 2500000,
74 2650000,
75 2700000,
76 2750000,
77 2800000,
78 2900000,
79 3000000,
80 3300000,
81 };
82
83 static const int ldo_vaux3_voltages[] = {
84 1200000,
85 1500000,
86 1800000,
87 2100000,
88 2500000,
89 2750000,
90 2790000,
91 2910000,
92 };
93
94 static const int ldo_vintcore_voltages[] = {
95 1200000,
96 1225000,
97 1250000,
98 1275000,
99 1300000,
100 1325000,
101 1350000,
102 };
103
ab8500_regulator_enable(struct regulator_dev * rdev)104 static int ab8500_regulator_enable(struct regulator_dev *rdev)
105 {
106 int ret;
107 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
108
109 if (info == NULL) {
110 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
111 return -EINVAL;
112 }
113
114 ret = abx500_mask_and_set_register_interruptible(info->dev,
115 info->update_bank, info->update_reg,
116 info->update_mask, info->update_val_enable);
117 if (ret < 0)
118 dev_err(rdev_get_dev(rdev),
119 "couldn't set enable bits for regulator\n");
120
121 dev_vdbg(rdev_get_dev(rdev),
122 "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
123 info->desc.name, info->update_bank, info->update_reg,
124 info->update_mask, info->update_val_enable);
125
126 return ret;
127 }
128
ab8500_regulator_disable(struct regulator_dev * rdev)129 static int ab8500_regulator_disable(struct regulator_dev *rdev)
130 {
131 int ret;
132 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
133
134 if (info == NULL) {
135 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
136 return -EINVAL;
137 }
138
139 ret = abx500_mask_and_set_register_interruptible(info->dev,
140 info->update_bank, info->update_reg,
141 info->update_mask, 0x0);
142 if (ret < 0)
143 dev_err(rdev_get_dev(rdev),
144 "couldn't set disable bits for regulator\n");
145
146 dev_vdbg(rdev_get_dev(rdev),
147 "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
148 info->desc.name, info->update_bank, info->update_reg,
149 info->update_mask, 0x0);
150
151 return ret;
152 }
153
ab8500_regulator_is_enabled(struct regulator_dev * rdev)154 static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
155 {
156 int ret;
157 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
158 u8 regval;
159
160 if (info == NULL) {
161 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
162 return -EINVAL;
163 }
164
165 ret = abx500_get_register_interruptible(info->dev,
166 info->update_bank, info->update_reg, ®val);
167 if (ret < 0) {
168 dev_err(rdev_get_dev(rdev),
169 "couldn't read 0x%x register\n", info->update_reg);
170 return ret;
171 }
172
173 dev_vdbg(rdev_get_dev(rdev),
174 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
175 " 0x%x\n",
176 info->desc.name, info->update_bank, info->update_reg,
177 info->update_mask, regval);
178
179 if (regval & info->update_mask)
180 return true;
181 else
182 return false;
183 }
184
ab8500_list_voltage(struct regulator_dev * rdev,unsigned selector)185 static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
186 {
187 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
188
189 if (info == NULL) {
190 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
191 return -EINVAL;
192 }
193
194 /* return the uV for the fixed regulators */
195 if (info->fixed_uV)
196 return info->fixed_uV;
197
198 if (selector >= info->voltages_len)
199 return -EINVAL;
200
201 return info->voltages[selector];
202 }
203
ab8500_regulator_get_voltage_sel(struct regulator_dev * rdev)204 static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
205 {
206 int ret, val;
207 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
208 u8 regval;
209
210 if (info == NULL) {
211 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
212 return -EINVAL;
213 }
214
215 ret = abx500_get_register_interruptible(info->dev,
216 info->voltage_bank, info->voltage_reg, ®val);
217 if (ret < 0) {
218 dev_err(rdev_get_dev(rdev),
219 "couldn't read voltage reg for regulator\n");
220 return ret;
221 }
222
223 dev_vdbg(rdev_get_dev(rdev),
224 "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
225 " 0x%x\n",
226 info->desc.name, info->voltage_bank, info->voltage_reg,
227 info->voltage_mask, regval);
228
229 /* vintcore has a different layout */
230 val = regval & info->voltage_mask;
231 if (info->desc.id == AB8500_LDO_INTCORE)
232 return val >> 0x3;
233 else
234 return val;
235 }
236
ab8500_get_best_voltage_index(struct regulator_dev * rdev,int min_uV,int max_uV)237 static int ab8500_get_best_voltage_index(struct regulator_dev *rdev,
238 int min_uV, int max_uV)
239 {
240 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
241 int i;
242
243 /* check the supported voltage */
244 for (i = 0; i < info->voltages_len; i++) {
245 if ((info->voltages[i] >= min_uV) &&
246 (info->voltages[i] <= max_uV))
247 return i;
248 }
249
250 return -EINVAL;
251 }
252
ab8500_regulator_set_voltage(struct regulator_dev * rdev,int min_uV,int max_uV,unsigned * selector)253 static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,
254 int min_uV, int max_uV,
255 unsigned *selector)
256 {
257 int ret;
258 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
259 u8 regval;
260
261 if (info == NULL) {
262 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
263 return -EINVAL;
264 }
265
266 /* get the appropriate voltages within the range */
267 ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV);
268 if (ret < 0) {
269 dev_err(rdev_get_dev(rdev),
270 "couldn't get best voltage for regulator\n");
271 return ret;
272 }
273
274 *selector = ret;
275
276 /* set the registers for the request */
277 regval = (u8)ret;
278 ret = abx500_mask_and_set_register_interruptible(info->dev,
279 info->voltage_bank, info->voltage_reg,
280 info->voltage_mask, regval);
281 if (ret < 0)
282 dev_err(rdev_get_dev(rdev),
283 "couldn't set voltage reg for regulator\n");
284
285 dev_vdbg(rdev_get_dev(rdev),
286 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
287 " 0x%x\n",
288 info->desc.name, info->voltage_bank, info->voltage_reg,
289 info->voltage_mask, regval);
290
291 return ret;
292 }
293
ab8500_regulator_enable_time(struct regulator_dev * rdev)294 static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
295 {
296 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
297
298 return info->delay;
299 }
300
ab8500_regulator_set_voltage_time_sel(struct regulator_dev * rdev,unsigned int old_sel,unsigned int new_sel)301 static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
302 unsigned int old_sel,
303 unsigned int new_sel)
304 {
305 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
306 int ret;
307
308 /* If the regulator isn't on, it won't take time here */
309 ret = ab8500_regulator_is_enabled(rdev);
310 if (ret < 0)
311 return ret;
312 if (!ret)
313 return 0;
314 return info->delay;
315 }
316
317 static struct regulator_ops ab8500_regulator_ops = {
318 .enable = ab8500_regulator_enable,
319 .disable = ab8500_regulator_disable,
320 .is_enabled = ab8500_regulator_is_enabled,
321 .get_voltage_sel = ab8500_regulator_get_voltage_sel,
322 .set_voltage = ab8500_regulator_set_voltage,
323 .list_voltage = ab8500_list_voltage,
324 .enable_time = ab8500_regulator_enable_time,
325 .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
326 };
327
ab8500_fixed_get_voltage(struct regulator_dev * rdev)328 static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
329 {
330 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
331
332 if (info == NULL) {
333 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
334 return -EINVAL;
335 }
336
337 return info->fixed_uV;
338 }
339
340 static struct regulator_ops ab8500_regulator_fixed_ops = {
341 .enable = ab8500_regulator_enable,
342 .disable = ab8500_regulator_disable,
343 .is_enabled = ab8500_regulator_is_enabled,
344 .get_voltage = ab8500_fixed_get_voltage,
345 .list_voltage = ab8500_list_voltage,
346 .enable_time = ab8500_regulator_enable_time,
347 .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
348 };
349
350 static struct ab8500_regulator_info
351 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
352 /*
353 * Variable Voltage Regulators
354 * name, min mV, max mV,
355 * update bank, reg, mask, enable val
356 * volt bank, reg, mask, table, table length
357 */
358 [AB8500_LDO_AUX1] = {
359 .desc = {
360 .name = "LDO-AUX1",
361 .ops = &ab8500_regulator_ops,
362 .type = REGULATOR_VOLTAGE,
363 .id = AB8500_LDO_AUX1,
364 .owner = THIS_MODULE,
365 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
366 },
367 .min_uV = 1100000,
368 .max_uV = 3300000,
369 .update_bank = 0x04,
370 .update_reg = 0x09,
371 .update_mask = 0x03,
372 .update_val_enable = 0x01,
373 .voltage_bank = 0x04,
374 .voltage_reg = 0x1f,
375 .voltage_mask = 0x0f,
376 .voltages = ldo_vauxn_voltages,
377 .voltages_len = ARRAY_SIZE(ldo_vauxn_voltages),
378 },
379 [AB8500_LDO_AUX2] = {
380 .desc = {
381 .name = "LDO-AUX2",
382 .ops = &ab8500_regulator_ops,
383 .type = REGULATOR_VOLTAGE,
384 .id = AB8500_LDO_AUX2,
385 .owner = THIS_MODULE,
386 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
387 },
388 .min_uV = 1100000,
389 .max_uV = 3300000,
390 .update_bank = 0x04,
391 .update_reg = 0x09,
392 .update_mask = 0x0c,
393 .update_val_enable = 0x04,
394 .voltage_bank = 0x04,
395 .voltage_reg = 0x20,
396 .voltage_mask = 0x0f,
397 .voltages = ldo_vauxn_voltages,
398 .voltages_len = ARRAY_SIZE(ldo_vauxn_voltages),
399 },
400 [AB8500_LDO_AUX3] = {
401 .desc = {
402 .name = "LDO-AUX3",
403 .ops = &ab8500_regulator_ops,
404 .type = REGULATOR_VOLTAGE,
405 .id = AB8500_LDO_AUX3,
406 .owner = THIS_MODULE,
407 .n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
408 },
409 .min_uV = 1100000,
410 .max_uV = 3300000,
411 .update_bank = 0x04,
412 .update_reg = 0x0a,
413 .update_mask = 0x03,
414 .update_val_enable = 0x01,
415 .voltage_bank = 0x04,
416 .voltage_reg = 0x21,
417 .voltage_mask = 0x07,
418 .voltages = ldo_vaux3_voltages,
419 .voltages_len = ARRAY_SIZE(ldo_vaux3_voltages),
420 },
421 [AB8500_LDO_INTCORE] = {
422 .desc = {
423 .name = "LDO-INTCORE",
424 .ops = &ab8500_regulator_ops,
425 .type = REGULATOR_VOLTAGE,
426 .id = AB8500_LDO_INTCORE,
427 .owner = THIS_MODULE,
428 .n_voltages = ARRAY_SIZE(ldo_vintcore_voltages),
429 },
430 .min_uV = 1100000,
431 .max_uV = 3300000,
432 .update_bank = 0x03,
433 .update_reg = 0x80,
434 .update_mask = 0x44,
435 .update_val_enable = 0x04,
436 .voltage_bank = 0x03,
437 .voltage_reg = 0x80,
438 .voltage_mask = 0x38,
439 .voltages = ldo_vintcore_voltages,
440 .voltages_len = ARRAY_SIZE(ldo_vintcore_voltages),
441 },
442
443 /*
444 * Fixed Voltage Regulators
445 * name, fixed mV,
446 * update bank, reg, mask, enable val
447 */
448 [AB8500_LDO_TVOUT] = {
449 .desc = {
450 .name = "LDO-TVOUT",
451 .ops = &ab8500_regulator_fixed_ops,
452 .type = REGULATOR_VOLTAGE,
453 .id = AB8500_LDO_TVOUT,
454 .owner = THIS_MODULE,
455 .n_voltages = 1,
456 },
457 .delay = 10000,
458 .fixed_uV = 2000000,
459 .update_bank = 0x03,
460 .update_reg = 0x80,
461 .update_mask = 0x82,
462 .update_val_enable = 0x02,
463 },
464 [AB8500_LDO_USB] = {
465 .desc = {
466 .name = "LDO-USB",
467 .ops = &ab8500_regulator_fixed_ops,
468 .type = REGULATOR_VOLTAGE,
469 .id = AB8500_LDO_USB,
470 .owner = THIS_MODULE,
471 .n_voltages = 1,
472 },
473 .fixed_uV = 3300000,
474 .update_bank = 0x03,
475 .update_reg = 0x82,
476 .update_mask = 0x03,
477 .update_val_enable = 0x01,
478 },
479 [AB8500_LDO_AUDIO] = {
480 .desc = {
481 .name = "LDO-AUDIO",
482 .ops = &ab8500_regulator_fixed_ops,
483 .type = REGULATOR_VOLTAGE,
484 .id = AB8500_LDO_AUDIO,
485 .owner = THIS_MODULE,
486 .n_voltages = 1,
487 },
488 .fixed_uV = 2000000,
489 .update_bank = 0x03,
490 .update_reg = 0x83,
491 .update_mask = 0x02,
492 .update_val_enable = 0x02,
493 },
494 [AB8500_LDO_ANAMIC1] = {
495 .desc = {
496 .name = "LDO-ANAMIC1",
497 .ops = &ab8500_regulator_fixed_ops,
498 .type = REGULATOR_VOLTAGE,
499 .id = AB8500_LDO_ANAMIC1,
500 .owner = THIS_MODULE,
501 .n_voltages = 1,
502 },
503 .fixed_uV = 2050000,
504 .update_bank = 0x03,
505 .update_reg = 0x83,
506 .update_mask = 0x08,
507 .update_val_enable = 0x08,
508 },
509 [AB8500_LDO_ANAMIC2] = {
510 .desc = {
511 .name = "LDO-ANAMIC2",
512 .ops = &ab8500_regulator_fixed_ops,
513 .type = REGULATOR_VOLTAGE,
514 .id = AB8500_LDO_ANAMIC2,
515 .owner = THIS_MODULE,
516 .n_voltages = 1,
517 },
518 .fixed_uV = 2050000,
519 .update_bank = 0x03,
520 .update_reg = 0x83,
521 .update_mask = 0x10,
522 .update_val_enable = 0x10,
523 },
524 [AB8500_LDO_DMIC] = {
525 .desc = {
526 .name = "LDO-DMIC",
527 .ops = &ab8500_regulator_fixed_ops,
528 .type = REGULATOR_VOLTAGE,
529 .id = AB8500_LDO_DMIC,
530 .owner = THIS_MODULE,
531 .n_voltages = 1,
532 },
533 .fixed_uV = 1800000,
534 .update_bank = 0x03,
535 .update_reg = 0x83,
536 .update_mask = 0x04,
537 .update_val_enable = 0x04,
538 },
539 [AB8500_LDO_ANA] = {
540 .desc = {
541 .name = "LDO-ANA",
542 .ops = &ab8500_regulator_fixed_ops,
543 .type = REGULATOR_VOLTAGE,
544 .id = AB8500_LDO_ANA,
545 .owner = THIS_MODULE,
546 .n_voltages = 1,
547 },
548 .fixed_uV = 1200000,
549 .update_bank = 0x04,
550 .update_reg = 0x06,
551 .update_mask = 0x0c,
552 .update_val_enable = 0x04,
553 },
554
555
556 };
557
558 struct ab8500_reg_init {
559 u8 bank;
560 u8 addr;
561 u8 mask;
562 };
563
564 #define REG_INIT(_id, _bank, _addr, _mask) \
565 [_id] = { \
566 .bank = _bank, \
567 .addr = _addr, \
568 .mask = _mask, \
569 }
570
571 static struct ab8500_reg_init ab8500_reg_init[] = {
572 /*
573 * 0x30, VanaRequestCtrl
574 * 0x0C, VpllRequestCtrl
575 * 0xc0, VextSupply1RequestCtrl
576 */
577 REG_INIT(AB8500_REGUREQUESTCTRL2, 0x03, 0x04, 0xfc),
578 /*
579 * 0x03, VextSupply2RequestCtrl
580 * 0x0c, VextSupply3RequestCtrl
581 * 0x30, Vaux1RequestCtrl
582 * 0xc0, Vaux2RequestCtrl
583 */
584 REG_INIT(AB8500_REGUREQUESTCTRL3, 0x03, 0x05, 0xff),
585 /*
586 * 0x03, Vaux3RequestCtrl
587 * 0x04, SwHPReq
588 */
589 REG_INIT(AB8500_REGUREQUESTCTRL4, 0x03, 0x06, 0x07),
590 /*
591 * 0x08, VanaSysClkReq1HPValid
592 * 0x20, Vaux1SysClkReq1HPValid
593 * 0x40, Vaux2SysClkReq1HPValid
594 * 0x80, Vaux3SysClkReq1HPValid
595 */
596 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
597 /*
598 * 0x10, VextSupply1SysClkReq1HPValid
599 * 0x20, VextSupply2SysClkReq1HPValid
600 * 0x40, VextSupply3SysClkReq1HPValid
601 */
602 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
603 /*
604 * 0x08, VanaHwHPReq1Valid
605 * 0x20, Vaux1HwHPReq1Valid
606 * 0x40, Vaux2HwHPReq1Valid
607 * 0x80, Vaux3HwHPReq1Valid
608 */
609 REG_INIT(AB8500_REGUHWHPREQ1VALID1, 0x03, 0x09, 0xe8),
610 /*
611 * 0x01, VextSupply1HwHPReq1Valid
612 * 0x02, VextSupply2HwHPReq1Valid
613 * 0x04, VextSupply3HwHPReq1Valid
614 */
615 REG_INIT(AB8500_REGUHWHPREQ1VALID2, 0x03, 0x0a, 0x07),
616 /*
617 * 0x08, VanaHwHPReq2Valid
618 * 0x20, Vaux1HwHPReq2Valid
619 * 0x40, Vaux2HwHPReq2Valid
620 * 0x80, Vaux3HwHPReq2Valid
621 */
622 REG_INIT(AB8500_REGUHWHPREQ2VALID1, 0x03, 0x0b, 0xe8),
623 /*
624 * 0x01, VextSupply1HwHPReq2Valid
625 * 0x02, VextSupply2HwHPReq2Valid
626 * 0x04, VextSupply3HwHPReq2Valid
627 */
628 REG_INIT(AB8500_REGUHWHPREQ2VALID2, 0x03, 0x0c, 0x07),
629 /*
630 * 0x20, VanaSwHPReqValid
631 * 0x80, Vaux1SwHPReqValid
632 */
633 REG_INIT(AB8500_REGUSWHPREQVALID1, 0x03, 0x0d, 0xa0),
634 /*
635 * 0x01, Vaux2SwHPReqValid
636 * 0x02, Vaux3SwHPReqValid
637 * 0x04, VextSupply1SwHPReqValid
638 * 0x08, VextSupply2SwHPReqValid
639 * 0x10, VextSupply3SwHPReqValid
640 */
641 REG_INIT(AB8500_REGUSWHPREQVALID2, 0x03, 0x0e, 0x1f),
642 /*
643 * 0x02, SysClkReq2Valid1
644 * ...
645 * 0x80, SysClkReq8Valid1
646 */
647 REG_INIT(AB8500_REGUSYSCLKREQVALID1, 0x03, 0x0f, 0xfe),
648 /*
649 * 0x02, SysClkReq2Valid2
650 * ...
651 * 0x80, SysClkReq8Valid2
652 */
653 REG_INIT(AB8500_REGUSYSCLKREQVALID2, 0x03, 0x10, 0xfe),
654 /*
655 * 0x02, VTVoutEna
656 * 0x04, Vintcore12Ena
657 * 0x38, Vintcore12Sel
658 * 0x40, Vintcore12LP
659 * 0x80, VTVoutLP
660 */
661 REG_INIT(AB8500_REGUMISC1, 0x03, 0x80, 0xfe),
662 /*
663 * 0x02, VaudioEna
664 * 0x04, VdmicEna
665 * 0x08, Vamic1Ena
666 * 0x10, Vamic2Ena
667 */
668 REG_INIT(AB8500_VAUDIOSUPPLY, 0x03, 0x83, 0x1e),
669 /*
670 * 0x01, Vamic1_dzout
671 * 0x02, Vamic2_dzout
672 */
673 REG_INIT(AB8500_REGUCTRL1VAMIC, 0x03, 0x84, 0x03),
674 /*
675 * 0x0c, VanaRegu
676 * 0x03, VpllRegu
677 */
678 REG_INIT(AB8500_VPLLVANAREGU, 0x04, 0x06, 0x0f),
679 /*
680 * 0x01, VrefDDREna
681 * 0x02, VrefDDRSleepMode
682 */
683 REG_INIT(AB8500_VREFDDR, 0x04, 0x07, 0x03),
684 /*
685 * 0x03, VextSupply1Regu
686 * 0x0c, VextSupply2Regu
687 * 0x30, VextSupply3Regu
688 * 0x40, ExtSupply2Bypass
689 * 0x80, ExtSupply3Bypass
690 */
691 REG_INIT(AB8500_EXTSUPPLYREGU, 0x04, 0x08, 0xff),
692 /*
693 * 0x03, Vaux1Regu
694 * 0x0c, Vaux2Regu
695 */
696 REG_INIT(AB8500_VAUX12REGU, 0x04, 0x09, 0x0f),
697 /*
698 * 0x03, Vaux3Regu
699 */
700 REG_INIT(AB8500_VRF1VAUX3REGU, 0x04, 0x0a, 0x03),
701 /*
702 * 0x3f, Vsmps1Sel1
703 */
704 REG_INIT(AB8500_VSMPS1SEL1, 0x04, 0x13, 0x3f),
705 /*
706 * 0x0f, Vaux1Sel
707 */
708 REG_INIT(AB8500_VAUX1SEL, 0x04, 0x1f, 0x0f),
709 /*
710 * 0x0f, Vaux2Sel
711 */
712 REG_INIT(AB8500_VAUX2SEL, 0x04, 0x20, 0x0f),
713 /*
714 * 0x07, Vaux3Sel
715 */
716 REG_INIT(AB8500_VRF1VAUX3SEL, 0x04, 0x21, 0x07),
717 /*
718 * 0x01, VextSupply12LP
719 */
720 REG_INIT(AB8500_REGUCTRL2SPARE, 0x04, 0x22, 0x01),
721 /*
722 * 0x04, Vaux1Disch
723 * 0x08, Vaux2Disch
724 * 0x10, Vaux3Disch
725 * 0x20, Vintcore12Disch
726 * 0x40, VTVoutDisch
727 * 0x80, VaudioDisch
728 */
729 REG_INIT(AB8500_REGUCTRLDISCH, 0x04, 0x43, 0xfc),
730 /*
731 * 0x02, VanaDisch
732 * 0x04, VdmicPullDownEna
733 * 0x10, VdmicDisch
734 */
735 REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16),
736 };
737
ab8500_regulator_probe(struct platform_device * pdev)738 static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
739 {
740 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
741 struct ab8500_platform_data *pdata;
742 int i, err;
743
744 if (!ab8500) {
745 dev_err(&pdev->dev, "null mfd parent\n");
746 return -EINVAL;
747 }
748 pdata = dev_get_platdata(ab8500->dev);
749 if (!pdata) {
750 dev_err(&pdev->dev, "null pdata\n");
751 return -EINVAL;
752 }
753
754 /* make sure the platform data has the correct size */
755 if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
756 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
757 return -EINVAL;
758 }
759
760 /* initialize registers */
761 for (i = 0; i < pdata->num_regulator_reg_init; i++) {
762 int id;
763 u8 value;
764
765 id = pdata->regulator_reg_init[i].id;
766 value = pdata->regulator_reg_init[i].value;
767
768 /* check for configuration errors */
769 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
770 dev_err(&pdev->dev,
771 "Configuration error: id outside range.\n");
772 return -EINVAL;
773 }
774 if (value & ~ab8500_reg_init[id].mask) {
775 dev_err(&pdev->dev,
776 "Configuration error: value outside mask.\n");
777 return -EINVAL;
778 }
779
780 /* initialize register */
781 err = abx500_mask_and_set_register_interruptible(&pdev->dev,
782 ab8500_reg_init[id].bank,
783 ab8500_reg_init[id].addr,
784 ab8500_reg_init[id].mask,
785 value);
786 if (err < 0) {
787 dev_err(&pdev->dev,
788 "Failed to initialize 0x%02x, 0x%02x.\n",
789 ab8500_reg_init[id].bank,
790 ab8500_reg_init[id].addr);
791 return err;
792 }
793 dev_vdbg(&pdev->dev,
794 " init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
795 ab8500_reg_init[id].bank,
796 ab8500_reg_init[id].addr,
797 ab8500_reg_init[id].mask,
798 value);
799 }
800
801 /* register all regulators */
802 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
803 struct ab8500_regulator_info *info = NULL;
804
805 /* assign per-regulator data */
806 info = &ab8500_regulator_info[i];
807 info->dev = &pdev->dev;
808
809 /* fix for hardware before ab8500v2.0 */
810 if (abx500_get_chip_id(info->dev) < 0x20) {
811 if (info->desc.id == AB8500_LDO_AUX3) {
812 info->desc.n_voltages =
813 ARRAY_SIZE(ldo_vauxn_voltages);
814 info->voltages = ldo_vauxn_voltages;
815 info->voltages_len =
816 ARRAY_SIZE(ldo_vauxn_voltages);
817 info->voltage_mask = 0xf;
818 }
819 }
820
821 /* register regulator with framework */
822 info->regulator = regulator_register(&info->desc, &pdev->dev,
823 &pdata->regulator[i], info, NULL);
824 if (IS_ERR(info->regulator)) {
825 err = PTR_ERR(info->regulator);
826 dev_err(&pdev->dev, "failed to register regulator %s\n",
827 info->desc.name);
828 /* when we fail, un-register all earlier regulators */
829 while (--i >= 0) {
830 info = &ab8500_regulator_info[i];
831 regulator_unregister(info->regulator);
832 }
833 return err;
834 }
835
836 dev_vdbg(rdev_get_dev(info->regulator),
837 "%s-probed\n", info->desc.name);
838 }
839
840 return 0;
841 }
842
ab8500_regulator_remove(struct platform_device * pdev)843 static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
844 {
845 int i;
846
847 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
848 struct ab8500_regulator_info *info = NULL;
849 info = &ab8500_regulator_info[i];
850
851 dev_vdbg(rdev_get_dev(info->regulator),
852 "%s-remove\n", info->desc.name);
853
854 regulator_unregister(info->regulator);
855 }
856
857 return 0;
858 }
859
860 static struct platform_driver ab8500_regulator_driver = {
861 .probe = ab8500_regulator_probe,
862 .remove = __devexit_p(ab8500_regulator_remove),
863 .driver = {
864 .name = "ab8500-regulator",
865 .owner = THIS_MODULE,
866 },
867 };
868
ab8500_regulator_init(void)869 static int __init ab8500_regulator_init(void)
870 {
871 int ret;
872
873 ret = platform_driver_register(&ab8500_regulator_driver);
874 if (ret != 0)
875 pr_err("Failed to register ab8500 regulator: %d\n", ret);
876
877 return ret;
878 }
879 subsys_initcall(ab8500_regulator_init);
880
ab8500_regulator_exit(void)881 static void __exit ab8500_regulator_exit(void)
882 {
883 platform_driver_unregister(&ab8500_regulator_driver);
884 }
885 module_exit(ab8500_regulator_exit);
886
887 MODULE_LICENSE("GPL v2");
888 MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
889 MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
890 MODULE_ALIAS("platform:ab8500-regulator");
891