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Merge git://git.infradead.org/users/willy/linux-nvme
[linux-2.6/cjktty.git] / drivers / regulator / ab8500.c
blob09014f38a9481f8afb630ce8a5c5fdb513100380
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/of.h>
22 #include <linux/regulator/of_regulator.h>
23 #include <linux/regulator/driver.h>
24 #include <linux/regulator/machine.h>
25 #include <linux/regulator/ab8500.h>
26 #include <linux/slab.h>
27
28 /**
29 * struct ab8500_regulator_info - ab8500 regulator information
30 * @dev: device pointer
31 * @desc: regulator description
32 * @regulator_dev: regulator device
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 * @voltage_shift: shift to control regulator voltage
41 * @delay: startup/set voltage delay in us
42 */
43 struct ab8500_regulator_info {
44 struct device *dev;
45 struct regulator_desc desc;
46 struct regulator_dev *regulator;
47 u8 update_bank;
48 u8 update_reg;
49 u8 update_mask;
50 u8 update_val_enable;
51 u8 voltage_bank;
52 u8 voltage_reg;
53 u8 voltage_mask;
54 u8 voltage_shift;
55 unsigned int delay;
56 };
57
58 /* voltage tables for the vauxn/vintcore supplies */
59 static const unsigned int ldo_vauxn_voltages[] = {
60 1100000,
61 1200000,
62 1300000,
63 1400000,
64 1500000,
65 1800000,
66 1850000,
67 1900000,
68 2500000,
69 2650000,
70 2700000,
71 2750000,
72 2800000,
73 2900000,
74 3000000,
75 3300000,
76 };
77
78 static const unsigned int ldo_vaux3_voltages[] = {
79 1200000,
80 1500000,
81 1800000,
82 2100000,
83 2500000,
84 2750000,
85 2790000,
86 2910000,
87 };
88
89 static const unsigned int ldo_vintcore_voltages[] = {
90 1200000,
91 1225000,
92 1250000,
93 1275000,
94 1300000,
95 1325000,
96 1350000,
97 };
98
99 static int ab8500_regulator_enable(struct regulator_dev *rdev)
100 {
101 int ret;
102 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
103
104 if (info == NULL) {
105 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
106 return -EINVAL;
107 }
108
109 ret = abx500_mask_and_set_register_interruptible(info->dev,
110 info->update_bank, info->update_reg,
111 info->update_mask, info->update_val_enable);
112 if (ret < 0)
113 dev_err(rdev_get_dev(rdev),
114 "couldn't set enable bits for regulator\n");
115
116 dev_vdbg(rdev_get_dev(rdev),
117 "%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
118 info->desc.name, info->update_bank, info->update_reg,
119 info->update_mask, info->update_val_enable);
120
121 return ret;
122 }
123
124 static int ab8500_regulator_disable(struct regulator_dev *rdev)
125 {
126 int ret;
127 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
128
129 if (info == NULL) {
130 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
131 return -EINVAL;
132 }
133
134 ret = abx500_mask_and_set_register_interruptible(info->dev,
135 info->update_bank, info->update_reg,
136 info->update_mask, 0x0);
137 if (ret < 0)
138 dev_err(rdev_get_dev(rdev),
139 "couldn't set disable bits for regulator\n");
140
141 dev_vdbg(rdev_get_dev(rdev),
142 "%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
143 info->desc.name, info->update_bank, info->update_reg,
144 info->update_mask, 0x0);
145
146 return ret;
147 }
148
149 static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
150 {
151 int ret;
152 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
153 u8 regval;
154
155 if (info == NULL) {
156 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
157 return -EINVAL;
158 }
159
160 ret = abx500_get_register_interruptible(info->dev,
161 info->update_bank, info->update_reg, &regval);
162 if (ret < 0) {
163 dev_err(rdev_get_dev(rdev),
164 "couldn't read 0x%x register\n", info->update_reg);
165 return ret;
166 }
167
168 dev_vdbg(rdev_get_dev(rdev),
169 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
170 " 0x%x\n",
171 info->desc.name, info->update_bank, info->update_reg,
172 info->update_mask, regval);
173
174 if (regval & info->update_mask)
175 return true;
176 else
177 return false;
178 }
179
180 static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
181 {
182 int ret, val;
183 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
184 u8 regval;
185
186 if (info == NULL) {
187 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
188 return -EINVAL;
189 }
190
191 ret = abx500_get_register_interruptible(info->dev,
192 info->voltage_bank, info->voltage_reg, &regval);
193 if (ret < 0) {
194 dev_err(rdev_get_dev(rdev),
195 "couldn't read voltage reg for regulator\n");
196 return ret;
197 }
198
199 dev_vdbg(rdev_get_dev(rdev),
200 "%s-get_voltage (bank, reg, mask, shift, value): "
201 "0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n",
202 info->desc.name, info->voltage_bank,
203 info->voltage_reg, info->voltage_mask,
204 info->voltage_shift, regval);
205
206 val = regval & info->voltage_mask;
207 return val >> info->voltage_shift;
208 }
209
210 static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
211 unsigned selector)
212 {
213 int ret;
214 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
215 u8 regval;
216
217 if (info == NULL) {
218 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
219 return -EINVAL;
220 }
221
222 /* set the registers for the request */
223 regval = (u8)selector << info->voltage_shift;
224 ret = abx500_mask_and_set_register_interruptible(info->dev,
225 info->voltage_bank, info->voltage_reg,
226 info->voltage_mask, regval);
227 if (ret < 0)
228 dev_err(rdev_get_dev(rdev),
229 "couldn't set voltage reg for regulator\n");
230
231 dev_vdbg(rdev_get_dev(rdev),
232 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
233 " 0x%x\n",
234 info->desc.name, info->voltage_bank, info->voltage_reg,
235 info->voltage_mask, regval);
236
237 return ret;
238 }
239
240 static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
241 unsigned int old_sel,
242 unsigned int new_sel)
243 {
244 struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
245
246 return info->delay;
247 }
248
249 static struct regulator_ops ab8500_regulator_ops = {
250 .enable = ab8500_regulator_enable,
251 .disable = ab8500_regulator_disable,
252 .is_enabled = ab8500_regulator_is_enabled,
253 .get_voltage_sel = ab8500_regulator_get_voltage_sel,
254 .set_voltage_sel = ab8500_regulator_set_voltage_sel,
255 .list_voltage = regulator_list_voltage_table,
256 .set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
257 };
258
259 static struct regulator_ops ab8500_regulator_fixed_ops = {
260 .enable = ab8500_regulator_enable,
261 .disable = ab8500_regulator_disable,
262 .is_enabled = ab8500_regulator_is_enabled,
263 .list_voltage = regulator_list_voltage_linear,
264 };
265
266 static struct ab8500_regulator_info
267 ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
268 /*
269 * Variable Voltage Regulators
270 * name, min mV, max mV,
271 * update bank, reg, mask, enable val
272 * volt bank, reg, mask
273 */
274 [AB8500_LDO_AUX1] = {
275 .desc = {
276 .name = "LDO-AUX1",
277 .ops = &ab8500_regulator_ops,
278 .type = REGULATOR_VOLTAGE,
279 .id = AB8500_LDO_AUX1,
280 .owner = THIS_MODULE,
281 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
282 .volt_table = ldo_vauxn_voltages,
283 },
284 .update_bank = 0x04,
285 .update_reg = 0x09,
286 .update_mask = 0x03,
287 .update_val_enable = 0x01,
288 .voltage_bank = 0x04,
289 .voltage_reg = 0x1f,
290 .voltage_mask = 0x0f,
291 },
292 [AB8500_LDO_AUX2] = {
293 .desc = {
294 .name = "LDO-AUX2",
295 .ops = &ab8500_regulator_ops,
296 .type = REGULATOR_VOLTAGE,
297 .id = AB8500_LDO_AUX2,
298 .owner = THIS_MODULE,
299 .n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
300 .volt_table = ldo_vauxn_voltages,
301 },
302 .update_bank = 0x04,
303 .update_reg = 0x09,
304 .update_mask = 0x0c,
305 .update_val_enable = 0x04,
306 .voltage_bank = 0x04,
307 .voltage_reg = 0x20,
308 .voltage_mask = 0x0f,
309 },
310 [AB8500_LDO_AUX3] = {
311 .desc = {
312 .name = "LDO-AUX3",
313 .ops = &ab8500_regulator_ops,
314 .type = REGULATOR_VOLTAGE,
315 .id = AB8500_LDO_AUX3,
316 .owner = THIS_MODULE,
317 .n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
318 .volt_table = ldo_vaux3_voltages,
319 },
320 .update_bank = 0x04,
321 .update_reg = 0x0a,
322 .update_mask = 0x03,
323 .update_val_enable = 0x01,
324 .voltage_bank = 0x04,
325 .voltage_reg = 0x21,
326 .voltage_mask = 0x07,
327 },
328 [AB8500_LDO_INTCORE] = {
329 .desc = {
330 .name = "LDO-INTCORE",
331 .ops = &ab8500_regulator_ops,
332 .type = REGULATOR_VOLTAGE,
333 .id = AB8500_LDO_INTCORE,
334 .owner = THIS_MODULE,
335 .n_voltages = ARRAY_SIZE(ldo_vintcore_voltages),
336 .volt_table = ldo_vintcore_voltages,
337 },
338 .update_bank = 0x03,
339 .update_reg = 0x80,
340 .update_mask = 0x44,
341 .update_val_enable = 0x04,
342 .voltage_bank = 0x03,
343 .voltage_reg = 0x80,
344 .voltage_mask = 0x38,
345 .voltage_shift = 3,
346 },
347
348 /*
349 * Fixed Voltage Regulators
350 * name, fixed mV,
351 * update bank, reg, mask, enable val
352 */
353 [AB8500_LDO_TVOUT] = {
354 .desc = {
355 .name = "LDO-TVOUT",
356 .ops = &ab8500_regulator_fixed_ops,
357 .type = REGULATOR_VOLTAGE,
358 .id = AB8500_LDO_TVOUT,
359 .owner = THIS_MODULE,
360 .n_voltages = 1,
361 .min_uV = 2000000,
362 .enable_time = 10000,
363 },
364 .delay = 10000,
365 .update_bank = 0x03,
366 .update_reg = 0x80,
367 .update_mask = 0x82,
368 .update_val_enable = 0x02,
369 },
370 [AB8500_LDO_USB] = {
371 .desc = {
372 .name = "LDO-USB",
373 .ops = &ab8500_regulator_fixed_ops,
374 .type = REGULATOR_VOLTAGE,
375 .id = AB8500_LDO_USB,
376 .owner = THIS_MODULE,
377 .n_voltages = 1,
378 .min_uV = 3300000,
379 },
380 .update_bank = 0x03,
381 .update_reg = 0x82,
382 .update_mask = 0x03,
383 .update_val_enable = 0x01,
384 },
385 [AB8500_LDO_AUDIO] = {
386 .desc = {
387 .name = "LDO-AUDIO",
388 .ops = &ab8500_regulator_fixed_ops,
389 .type = REGULATOR_VOLTAGE,
390 .id = AB8500_LDO_AUDIO,
391 .owner = THIS_MODULE,
392 .n_voltages = 1,
393 .min_uV = 2000000,
394 },
395 .update_bank = 0x03,
396 .update_reg = 0x83,
397 .update_mask = 0x02,
398 .update_val_enable = 0x02,
399 },
400 [AB8500_LDO_ANAMIC1] = {
401 .desc = {
402 .name = "LDO-ANAMIC1",
403 .ops = &ab8500_regulator_fixed_ops,
404 .type = REGULATOR_VOLTAGE,
405 .id = AB8500_LDO_ANAMIC1,
406 .owner = THIS_MODULE,
407 .n_voltages = 1,
408 .min_uV = 2050000,
409 },
410 .update_bank = 0x03,
411 .update_reg = 0x83,
412 .update_mask = 0x08,
413 .update_val_enable = 0x08,
414 },
415 [AB8500_LDO_ANAMIC2] = {
416 .desc = {
417 .name = "LDO-ANAMIC2",
418 .ops = &ab8500_regulator_fixed_ops,
419 .type = REGULATOR_VOLTAGE,
420 .id = AB8500_LDO_ANAMIC2,
421 .owner = THIS_MODULE,
422 .n_voltages = 1,
423 .min_uV = 2050000,
424 },
425 .update_bank = 0x03,
426 .update_reg = 0x83,
427 .update_mask = 0x10,
428 .update_val_enable = 0x10,
429 },
430 [AB8500_LDO_DMIC] = {
431 .desc = {
432 .name = "LDO-DMIC",
433 .ops = &ab8500_regulator_fixed_ops,
434 .type = REGULATOR_VOLTAGE,
435 .id = AB8500_LDO_DMIC,
436 .owner = THIS_MODULE,
437 .n_voltages = 1,
438 .min_uV = 1800000,
439 },
440 .update_bank = 0x03,
441 .update_reg = 0x83,
442 .update_mask = 0x04,
443 .update_val_enable = 0x04,
444 },
445 [AB8500_LDO_ANA] = {
446 .desc = {
447 .name = "LDO-ANA",
448 .ops = &ab8500_regulator_fixed_ops,
449 .type = REGULATOR_VOLTAGE,
450 .id = AB8500_LDO_ANA,
451 .owner = THIS_MODULE,
452 .n_voltages = 1,
453 .min_uV = 1200000,
454 },
455 .update_bank = 0x04,
456 .update_reg = 0x06,
457 .update_mask = 0x0c,
458 .update_val_enable = 0x04,
459 },
460
461
462 };
463
464 struct ab8500_reg_init {
465 u8 bank;
466 u8 addr;
467 u8 mask;
468 };
469
470 #define REG_INIT(_id, _bank, _addr, _mask) \
471 [_id] = { \
472 .bank = _bank, \
473 .addr = _addr, \
474 .mask = _mask, \
475 }
476
477 static struct ab8500_reg_init ab8500_reg_init[] = {
478 /*
479 * 0x30, VanaRequestCtrl
480 * 0x0C, VpllRequestCtrl
481 * 0xc0, VextSupply1RequestCtrl
482 */
483 REG_INIT(AB8500_REGUREQUESTCTRL2, 0x03, 0x04, 0xfc),
484 /*
485 * 0x03, VextSupply2RequestCtrl
486 * 0x0c, VextSupply3RequestCtrl
487 * 0x30, Vaux1RequestCtrl
488 * 0xc0, Vaux2RequestCtrl
489 */
490 REG_INIT(AB8500_REGUREQUESTCTRL3, 0x03, 0x05, 0xff),
491 /*
492 * 0x03, Vaux3RequestCtrl
493 * 0x04, SwHPReq
494 */
495 REG_INIT(AB8500_REGUREQUESTCTRL4, 0x03, 0x06, 0x07),
496 /*
497 * 0x08, VanaSysClkReq1HPValid
498 * 0x20, Vaux1SysClkReq1HPValid
499 * 0x40, Vaux2SysClkReq1HPValid
500 * 0x80, Vaux3SysClkReq1HPValid
501 */
502 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
503 /*
504 * 0x10, VextSupply1SysClkReq1HPValid
505 * 0x20, VextSupply2SysClkReq1HPValid
506 * 0x40, VextSupply3SysClkReq1HPValid
507 */
508 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
509 /*
510 * 0x08, VanaHwHPReq1Valid
511 * 0x20, Vaux1HwHPReq1Valid
512 * 0x40, Vaux2HwHPReq1Valid
513 * 0x80, Vaux3HwHPReq1Valid
514 */
515 REG_INIT(AB8500_REGUHWHPREQ1VALID1, 0x03, 0x09, 0xe8),
516 /*
517 * 0x01, VextSupply1HwHPReq1Valid
518 * 0x02, VextSupply2HwHPReq1Valid
519 * 0x04, VextSupply3HwHPReq1Valid
520 */
521 REG_INIT(AB8500_REGUHWHPREQ1VALID2, 0x03, 0x0a, 0x07),
522 /*
523 * 0x08, VanaHwHPReq2Valid
524 * 0x20, Vaux1HwHPReq2Valid
525 * 0x40, Vaux2HwHPReq2Valid
526 * 0x80, Vaux3HwHPReq2Valid
527 */
528 REG_INIT(AB8500_REGUHWHPREQ2VALID1, 0x03, 0x0b, 0xe8),
529 /*
530 * 0x01, VextSupply1HwHPReq2Valid
531 * 0x02, VextSupply2HwHPReq2Valid
532 * 0x04, VextSupply3HwHPReq2Valid
533 */
534 REG_INIT(AB8500_REGUHWHPREQ2VALID2, 0x03, 0x0c, 0x07),
535 /*
536 * 0x20, VanaSwHPReqValid
537 * 0x80, Vaux1SwHPReqValid
538 */
539 REG_INIT(AB8500_REGUSWHPREQVALID1, 0x03, 0x0d, 0xa0),
540 /*
541 * 0x01, Vaux2SwHPReqValid
542 * 0x02, Vaux3SwHPReqValid
543 * 0x04, VextSupply1SwHPReqValid
544 * 0x08, VextSupply2SwHPReqValid
545 * 0x10, VextSupply3SwHPReqValid
546 */
547 REG_INIT(AB8500_REGUSWHPREQVALID2, 0x03, 0x0e, 0x1f),
548 /*
549 * 0x02, SysClkReq2Valid1
550 * ...
551 * 0x80, SysClkReq8Valid1
552 */
553 REG_INIT(AB8500_REGUSYSCLKREQVALID1, 0x03, 0x0f, 0xfe),
554 /*
555 * 0x02, SysClkReq2Valid2
556 * ...
557 * 0x80, SysClkReq8Valid2
558 */
559 REG_INIT(AB8500_REGUSYSCLKREQVALID2, 0x03, 0x10, 0xfe),
560 /*
561 * 0x02, VTVoutEna
562 * 0x04, Vintcore12Ena
563 * 0x38, Vintcore12Sel
564 * 0x40, Vintcore12LP
565 * 0x80, VTVoutLP
566 */
567 REG_INIT(AB8500_REGUMISC1, 0x03, 0x80, 0xfe),
568 /*
569 * 0x02, VaudioEna
570 * 0x04, VdmicEna
571 * 0x08, Vamic1Ena
572 * 0x10, Vamic2Ena
573 */
574 REG_INIT(AB8500_VAUDIOSUPPLY, 0x03, 0x83, 0x1e),
575 /*
576 * 0x01, Vamic1_dzout
577 * 0x02, Vamic2_dzout
578 */
579 REG_INIT(AB8500_REGUCTRL1VAMIC, 0x03, 0x84, 0x03),
580 /*
581 * 0x0c, VanaRegu
582 * 0x03, VpllRegu
583 */
584 REG_INIT(AB8500_VPLLVANAREGU, 0x04, 0x06, 0x0f),
585 /*
586 * 0x01, VrefDDREna
587 * 0x02, VrefDDRSleepMode
588 */
589 REG_INIT(AB8500_VREFDDR, 0x04, 0x07, 0x03),
590 /*
591 * 0x03, VextSupply1Regu
592 * 0x0c, VextSupply2Regu
593 * 0x30, VextSupply3Regu
594 * 0x40, ExtSupply2Bypass
595 * 0x80, ExtSupply3Bypass
596 */
597 REG_INIT(AB8500_EXTSUPPLYREGU, 0x04, 0x08, 0xff),
598 /*
599 * 0x03, Vaux1Regu
600 * 0x0c, Vaux2Regu
601 */
602 REG_INIT(AB8500_VAUX12REGU, 0x04, 0x09, 0x0f),
603 /*
604 * 0x03, Vaux3Regu
605 */
606 REG_INIT(AB8500_VRF1VAUX3REGU, 0x04, 0x0a, 0x03),
607 /*
608 * 0x3f, Vsmps1Sel1
609 */
610 REG_INIT(AB8500_VSMPS1SEL1, 0x04, 0x13, 0x3f),
611 /*
612 * 0x0f, Vaux1Sel
613 */
614 REG_INIT(AB8500_VAUX1SEL, 0x04, 0x1f, 0x0f),
615 /*
616 * 0x0f, Vaux2Sel
617 */
618 REG_INIT(AB8500_VAUX2SEL, 0x04, 0x20, 0x0f),
619 /*
620 * 0x07, Vaux3Sel
621 */
622 REG_INIT(AB8500_VRF1VAUX3SEL, 0x04, 0x21, 0x07),
623 /*
624 * 0x01, VextSupply12LP
625 */
626 REG_INIT(AB8500_REGUCTRL2SPARE, 0x04, 0x22, 0x01),
627 /*
628 * 0x04, Vaux1Disch
629 * 0x08, Vaux2Disch
630 * 0x10, Vaux3Disch
631 * 0x20, Vintcore12Disch
632 * 0x40, VTVoutDisch
633 * 0x80, VaudioDisch
634 */
635 REG_INIT(AB8500_REGUCTRLDISCH, 0x04, 0x43, 0xfc),
636 /*
637 * 0x02, VanaDisch
638 * 0x04, VdmicPullDownEna
639 * 0x10, VdmicDisch
640 */
641 REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16),
642 };
643
644 static int
645 ab8500_regulator_init_registers(struct platform_device *pdev, int id, int value)
646 {
647 int err;
648
649 if (value & ~ab8500_reg_init[id].mask) {
650 dev_err(&pdev->dev,
651 "Configuration error: value outside mask.\n");
652 return -EINVAL;
653 }
654
655 err = abx500_mask_and_set_register_interruptible(
656 &pdev->dev,
657 ab8500_reg_init[id].bank,
658 ab8500_reg_init[id].addr,
659 ab8500_reg_init[id].mask,
660 value);
661 if (err < 0) {
662 dev_err(&pdev->dev,
663 "Failed to initialize 0x%02x, 0x%02x.\n",
664 ab8500_reg_init[id].bank,
665 ab8500_reg_init[id].addr);
666 return err;
667 }
668
669 dev_vdbg(&pdev->dev,
670 "init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
671 ab8500_reg_init[id].bank,
672 ab8500_reg_init[id].addr,
673 ab8500_reg_init[id].mask,
674 value);
675
676 return 0;
677 }
678
679 static int ab8500_regulator_register(struct platform_device *pdev,
680 struct regulator_init_data *init_data,
681 int id,
682 struct device_node *np)
683 {
684 struct ab8500_regulator_info *info = NULL;
685 struct regulator_config config = { };
686 int err;
687
688 /* assign per-regulator data */
689 info = &ab8500_regulator_info[id];
690 info->dev = &pdev->dev;
691
692 config.dev = &pdev->dev;
693 config.init_data = init_data;
694 config.driver_data = info;
695 config.of_node = np;
696
697 /* fix for hardware before ab8500v2.0 */
698 if (abx500_get_chip_id(info->dev) < 0x20) {
699 if (info->desc.id == AB8500_LDO_AUX3) {
700 info->desc.n_voltages =
701 ARRAY_SIZE(ldo_vauxn_voltages);
702 info->desc.volt_table = ldo_vauxn_voltages;
703 info->voltage_mask = 0xf;
704 }
705 }
706
707 /* register regulator with framework */
708 info->regulator = regulator_register(&info->desc, &config);
709 if (IS_ERR(info->regulator)) {
710 err = PTR_ERR(info->regulator);
711 dev_err(&pdev->dev, "failed to register regulator %s\n",
712 info->desc.name);
713 /* when we fail, un-register all earlier regulators */
714 while (--id >= 0) {
715 info = &ab8500_regulator_info[id];
716 regulator_unregister(info->regulator);
717 }
718 return err;
719 }
720
721 return 0;
722 }
723
724 static struct of_regulator_match ab8500_regulator_matches[] = {
725 { .name = "ab8500_ldo_aux1", .driver_data = (void *) AB8500_LDO_AUX1, },
726 { .name = "ab8500_ldo_aux2", .driver_data = (void *) AB8500_LDO_AUX2, },
727 { .name = "ab8500_ldo_aux3", .driver_data = (void *) AB8500_LDO_AUX3, },
728 { .name = "ab8500_ldo_intcore", .driver_data = (void *) AB8500_LDO_INTCORE, },
729 { .name = "ab8500_ldo_tvout", .driver_data = (void *) AB8500_LDO_TVOUT, },
730 { .name = "ab8500_ldo_usb", .driver_data = (void *) AB8500_LDO_USB, },
731 { .name = "ab8500_ldo_audio", .driver_data = (void *) AB8500_LDO_AUDIO, },
732 { .name = "ab8500_ldo_anamic1", .driver_data = (void *) AB8500_LDO_ANAMIC1, },
733 { .name = "ab8500_ldo_amamic2", .driver_data = (void *) AB8500_LDO_ANAMIC2, },
734 { .name = "ab8500_ldo_dmic", .driver_data = (void *) AB8500_LDO_DMIC, },
735 { .name = "ab8500_ldo_ana", .driver_data = (void *) AB8500_LDO_ANA, },
736 };
737
738 static int
739 ab8500_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
740 {
741 int err, i;
742
743 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
744 err = ab8500_regulator_register(
745 pdev, ab8500_regulator_matches[i].init_data,
746 i, ab8500_regulator_matches[i].of_node);
747 if (err)
748 return err;
749 }
750
751 return 0;
752 }
753
754 static int ab8500_regulator_probe(struct platform_device *pdev)
755 {
756 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
757 struct ab8500_platform_data *pdata;
758 struct device_node *np = pdev->dev.of_node;
759 int i, err;
760
761 if (np) {
762 err = of_regulator_match(&pdev->dev, np,
763 ab8500_regulator_matches,
764 ARRAY_SIZE(ab8500_regulator_matches));
765 if (err < 0) {
766 dev_err(&pdev->dev,
767 "Error parsing regulator init data: %d\n", err);
768 return err;
769 }
770
771 err = ab8500_regulator_of_probe(pdev, np);
772 return err;
773 }
774
775 if (!ab8500) {
776 dev_err(&pdev->dev, "null mfd parent\n");
777 return -EINVAL;
778 }
779 pdata = dev_get_platdata(ab8500->dev);
780 if (!pdata) {
781 dev_err(&pdev->dev, "null pdata\n");
782 return -EINVAL;
783 }
784
785 /* make sure the platform data has the correct size */
786 if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
787 dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
788 return -EINVAL;
789 }
790
791 /* initialize registers */
792 for (i = 0; i < pdata->num_regulator_reg_init; i++) {
793 int id, value;
794
795 id = pdata->regulator_reg_init[i].id;
796 value = pdata->regulator_reg_init[i].value;
797
798 /* check for configuration errors */
799 if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
800 dev_err(&pdev->dev,
801 "Configuration error: id outside range.\n");
802 return -EINVAL;
803 }
804
805 err = ab8500_regulator_init_registers(pdev, id, value);
806 if (err < 0)
807 return err;
808 }
809
810 /* register all regulators */
811 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
812 err = ab8500_regulator_register(pdev, &pdata->regulator[i], i, NULL);
813 if (err < 0)
814 return err;
815 }
816
817 return 0;
818 }
819
820 static int ab8500_regulator_remove(struct platform_device *pdev)
821 {
822 int i;
823
824 for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
825 struct ab8500_regulator_info *info = NULL;
826 info = &ab8500_regulator_info[i];
827
828 dev_vdbg(rdev_get_dev(info->regulator),
829 "%s-remove\n", info->desc.name);
830
831 regulator_unregister(info->regulator);
832 }
833
834 return 0;
835 }
836
837 static struct platform_driver ab8500_regulator_driver = {
838 .probe = ab8500_regulator_probe,
839 .remove = ab8500_regulator_remove,
840 .driver = {
841 .name = "ab8500-regulator",
842 .owner = THIS_MODULE,
843 },
844 };
845
846 static int __init ab8500_regulator_init(void)
847 {
848 int ret;
849
850 ret = platform_driver_register(&ab8500_regulator_driver);
851 if (ret != 0)
852 pr_err("Failed to register ab8500 regulator: %d\n", ret);
853
854 return ret;
855 }
856 subsys_initcall(ab8500_regulator_init);
857
858 static void __exit ab8500_regulator_exit(void)
859 {
860 platform_driver_unregister(&ab8500_regulator_driver);
861 }
862 module_exit(ab8500_regulator_exit);
863
864 MODULE_LICENSE("GPL v2");
865 MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
866 MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
867 MODULE_ALIAS("platform:ab8500-regulator");
CJK support for tty framebuffer vt