2 * Copyright (C) ST-Ericsson SA 2010
4 * License Terms: GNU General Public License v2
6 * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
7 * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
9 * AB8500 peripheral regulators
11 * AB8500 supports the following regulators:
12 * VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
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>
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
44 struct ab8500_regulator_info
{
46 struct regulator_desc desc
;
47 struct regulator_dev
*regulator
;
63 /* voltage tables for the vauxn/vintcore supplies */
64 static const int ldo_vauxn_voltages
[] = {
83 static const int ldo_vaux3_voltages
[] = {
94 static const int ldo_vintcore_voltages
[] = {
104 static int ab8500_regulator_enable(struct regulator_dev
*rdev
)
107 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
110 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
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
);
118 dev_err(rdev_get_dev(rdev
),
119 "couldn't set enable bits for regulator\n");
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
);
129 static int ab8500_regulator_disable(struct regulator_dev
*rdev
)
132 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
135 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
139 ret
= abx500_mask_and_set_register_interruptible(info
->dev
,
140 info
->update_bank
, info
->update_reg
,
141 info
->update_mask
, 0x0);
143 dev_err(rdev_get_dev(rdev
),
144 "couldn't set disable bits for regulator\n");
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);
154 static int ab8500_regulator_is_enabled(struct regulator_dev
*rdev
)
157 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
161 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
165 ret
= abx500_get_register_interruptible(info
->dev
,
166 info
->update_bank
, info
->update_reg
, ®val
);
168 dev_err(rdev_get_dev(rdev
),
169 "couldn't read 0x%x register\n", info
->update_reg
);
173 dev_vdbg(rdev_get_dev(rdev
),
174 "%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
176 info
->desc
.name
, info
->update_bank
, info
->update_reg
,
177 info
->update_mask
, regval
);
179 if (regval
& info
->update_mask
)
185 static int ab8500_list_voltage(struct regulator_dev
*rdev
, unsigned selector
)
187 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
190 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
194 /* return the uV for the fixed regulators */
196 return info
->fixed_uV
;
198 if (selector
>= info
->voltages_len
)
201 return info
->voltages
[selector
];
204 static int ab8500_regulator_get_voltage_sel(struct regulator_dev
*rdev
)
207 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
211 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
215 ret
= abx500_get_register_interruptible(info
->dev
,
216 info
->voltage_bank
, info
->voltage_reg
, ®val
);
218 dev_err(rdev_get_dev(rdev
),
219 "couldn't read voltage reg for regulator\n");
223 dev_vdbg(rdev_get_dev(rdev
),
224 "%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
226 info
->desc
.name
, info
->voltage_bank
, info
->voltage_reg
,
227 info
->voltage_mask
, regval
);
229 /* vintcore has a different layout */
230 val
= regval
& info
->voltage_mask
;
231 if (info
->desc
.id
== AB8500_LDO_INTCORE
)
237 static int ab8500_get_best_voltage_index(struct regulator_dev
*rdev
,
238 int min_uV
, int max_uV
)
240 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
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
))
253 static int ab8500_regulator_set_voltage(struct regulator_dev
*rdev
,
254 int min_uV
, int max_uV
,
258 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
262 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
266 /* get the appropriate voltages within the range */
267 ret
= ab8500_get_best_voltage_index(rdev
, min_uV
, max_uV
);
269 dev_err(rdev_get_dev(rdev
),
270 "couldn't get best voltage for regulator\n");
276 /* set the registers for the request */
278 ret
= abx500_mask_and_set_register_interruptible(info
->dev
,
279 info
->voltage_bank
, info
->voltage_reg
,
280 info
->voltage_mask
, regval
);
282 dev_err(rdev_get_dev(rdev
),
283 "couldn't set voltage reg for regulator\n");
285 dev_vdbg(rdev_get_dev(rdev
),
286 "%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
288 info
->desc
.name
, info
->voltage_bank
, info
->voltage_reg
,
289 info
->voltage_mask
, regval
);
294 static int ab8500_regulator_enable_time(struct regulator_dev
*rdev
)
296 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
301 static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev
*rdev
,
302 unsigned int old_sel
,
303 unsigned int new_sel
)
305 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
308 /* If the regulator isn't on, it won't take time here */
309 ret
= ab8500_regulator_is_enabled(rdev
);
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
,
328 static int ab8500_fixed_get_voltage(struct regulator_dev
*rdev
)
330 struct ab8500_regulator_info
*info
= rdev_get_drvdata(rdev
);
333 dev_err(rdev_get_dev(rdev
), "regulator info null pointer\n");
337 return info
->fixed_uV
;
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
,
350 static struct ab8500_regulator_info
351 ab8500_regulator_info
[AB8500_NUM_REGULATORS
] = {
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
358 [AB8500_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
),
372 .update_val_enable
= 0x01,
373 .voltage_bank
= 0x04,
375 .voltage_mask
= 0x0f,
376 .voltages
= ldo_vauxn_voltages
,
377 .voltages_len
= ARRAY_SIZE(ldo_vauxn_voltages
),
379 [AB8500_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
),
393 .update_val_enable
= 0x04,
394 .voltage_bank
= 0x04,
396 .voltage_mask
= 0x0f,
397 .voltages
= ldo_vauxn_voltages
,
398 .voltages_len
= ARRAY_SIZE(ldo_vauxn_voltages
),
400 [AB8500_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
),
414 .update_val_enable
= 0x01,
415 .voltage_bank
= 0x04,
417 .voltage_mask
= 0x07,
418 .voltages
= ldo_vaux3_voltages
,
419 .voltages_len
= ARRAY_SIZE(ldo_vaux3_voltages
),
421 [AB8500_LDO_INTCORE
] = {
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
),
435 .update_val_enable
= 0x04,
436 .voltage_bank
= 0x03,
438 .voltage_mask
= 0x38,
439 .voltages
= ldo_vintcore_voltages
,
440 .voltages_len
= ARRAY_SIZE(ldo_vintcore_voltages
),
444 * Fixed Voltage Regulators
446 * update bank, reg, mask, enable val
448 [AB8500_LDO_TVOUT
] = {
451 .ops
= &ab8500_regulator_fixed_ops
,
452 .type
= REGULATOR_VOLTAGE
,
453 .id
= AB8500_LDO_TVOUT
,
454 .owner
= THIS_MODULE
,
462 .update_val_enable
= 0x02,
467 .ops
= &ab8500_regulator_fixed_ops
,
468 .type
= REGULATOR_VOLTAGE
,
469 .id
= AB8500_LDO_USB
,
470 .owner
= THIS_MODULE
,
477 .update_val_enable
= 0x01,
479 [AB8500_LDO_AUDIO
] = {
482 .ops
= &ab8500_regulator_fixed_ops
,
483 .type
= REGULATOR_VOLTAGE
,
484 .id
= AB8500_LDO_AUDIO
,
485 .owner
= THIS_MODULE
,
492 .update_val_enable
= 0x02,
494 [AB8500_LDO_ANAMIC1
] = {
496 .name
= "LDO-ANAMIC1",
497 .ops
= &ab8500_regulator_fixed_ops
,
498 .type
= REGULATOR_VOLTAGE
,
499 .id
= AB8500_LDO_ANAMIC1
,
500 .owner
= THIS_MODULE
,
507 .update_val_enable
= 0x08,
509 [AB8500_LDO_ANAMIC2
] = {
511 .name
= "LDO-ANAMIC2",
512 .ops
= &ab8500_regulator_fixed_ops
,
513 .type
= REGULATOR_VOLTAGE
,
514 .id
= AB8500_LDO_ANAMIC2
,
515 .owner
= THIS_MODULE
,
522 .update_val_enable
= 0x10,
524 [AB8500_LDO_DMIC
] = {
527 .ops
= &ab8500_regulator_fixed_ops
,
528 .type
= REGULATOR_VOLTAGE
,
529 .id
= AB8500_LDO_DMIC
,
530 .owner
= THIS_MODULE
,
537 .update_val_enable
= 0x04,
542 .ops
= &ab8500_regulator_fixed_ops
,
543 .type
= REGULATOR_VOLTAGE
,
544 .id
= AB8500_LDO_ANA
,
545 .owner
= THIS_MODULE
,
552 .update_val_enable
= 0x04,
558 struct ab8500_reg_init
{
564 #define REG_INIT(_id, _bank, _addr, _mask) \
571 static struct ab8500_reg_init ab8500_reg_init
[] = {
573 * 0x30, VanaRequestCtrl
574 * 0x0C, VpllRequestCtrl
575 * 0xc0, VextSupply1RequestCtrl
577 REG_INIT(AB8500_REGUREQUESTCTRL2
, 0x03, 0x04, 0xfc),
579 * 0x03, VextSupply2RequestCtrl
580 * 0x0c, VextSupply3RequestCtrl
581 * 0x30, Vaux1RequestCtrl
582 * 0xc0, Vaux2RequestCtrl
584 REG_INIT(AB8500_REGUREQUESTCTRL3
, 0x03, 0x05, 0xff),
586 * 0x03, Vaux3RequestCtrl
589 REG_INIT(AB8500_REGUREQUESTCTRL4
, 0x03, 0x06, 0x07),
591 * 0x08, VanaSysClkReq1HPValid
592 * 0x20, Vaux1SysClkReq1HPValid
593 * 0x40, Vaux2SysClkReq1HPValid
594 * 0x80, Vaux3SysClkReq1HPValid
596 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1
, 0x03, 0x07, 0xe8),
598 * 0x10, VextSupply1SysClkReq1HPValid
599 * 0x20, VextSupply2SysClkReq1HPValid
600 * 0x40, VextSupply3SysClkReq1HPValid
602 REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2
, 0x03, 0x08, 0x70),
604 * 0x08, VanaHwHPReq1Valid
605 * 0x20, Vaux1HwHPReq1Valid
606 * 0x40, Vaux2HwHPReq1Valid
607 * 0x80, Vaux3HwHPReq1Valid
609 REG_INIT(AB8500_REGUHWHPREQ1VALID1
, 0x03, 0x09, 0xe8),
611 * 0x01, VextSupply1HwHPReq1Valid
612 * 0x02, VextSupply2HwHPReq1Valid
613 * 0x04, VextSupply3HwHPReq1Valid
615 REG_INIT(AB8500_REGUHWHPREQ1VALID2
, 0x03, 0x0a, 0x07),
617 * 0x08, VanaHwHPReq2Valid
618 * 0x20, Vaux1HwHPReq2Valid
619 * 0x40, Vaux2HwHPReq2Valid
620 * 0x80, Vaux3HwHPReq2Valid
622 REG_INIT(AB8500_REGUHWHPREQ2VALID1
, 0x03, 0x0b, 0xe8),
624 * 0x01, VextSupply1HwHPReq2Valid
625 * 0x02, VextSupply2HwHPReq2Valid
626 * 0x04, VextSupply3HwHPReq2Valid
628 REG_INIT(AB8500_REGUHWHPREQ2VALID2
, 0x03, 0x0c, 0x07),
630 * 0x20, VanaSwHPReqValid
631 * 0x80, Vaux1SwHPReqValid
633 REG_INIT(AB8500_REGUSWHPREQVALID1
, 0x03, 0x0d, 0xa0),
635 * 0x01, Vaux2SwHPReqValid
636 * 0x02, Vaux3SwHPReqValid
637 * 0x04, VextSupply1SwHPReqValid
638 * 0x08, VextSupply2SwHPReqValid
639 * 0x10, VextSupply3SwHPReqValid
641 REG_INIT(AB8500_REGUSWHPREQVALID2
, 0x03, 0x0e, 0x1f),
643 * 0x02, SysClkReq2Valid1
645 * 0x80, SysClkReq8Valid1
647 REG_INIT(AB8500_REGUSYSCLKREQVALID1
, 0x03, 0x0f, 0xfe),
649 * 0x02, SysClkReq2Valid2
651 * 0x80, SysClkReq8Valid2
653 REG_INIT(AB8500_REGUSYSCLKREQVALID2
, 0x03, 0x10, 0xfe),
656 * 0x04, Vintcore12Ena
657 * 0x38, Vintcore12Sel
661 REG_INIT(AB8500_REGUMISC1
, 0x03, 0x80, 0xfe),
668 REG_INIT(AB8500_VAUDIOSUPPLY
, 0x03, 0x83, 0x1e),
673 REG_INIT(AB8500_REGUCTRL1VAMIC
, 0x03, 0x84, 0x03),
678 REG_INIT(AB8500_VPLLVANAREGU
, 0x04, 0x06, 0x0f),
681 * 0x02, VrefDDRSleepMode
683 REG_INIT(AB8500_VREFDDR
, 0x04, 0x07, 0x03),
685 * 0x03, VextSupply1Regu
686 * 0x0c, VextSupply2Regu
687 * 0x30, VextSupply3Regu
688 * 0x40, ExtSupply2Bypass
689 * 0x80, ExtSupply3Bypass
691 REG_INIT(AB8500_EXTSUPPLYREGU
, 0x04, 0x08, 0xff),
696 REG_INIT(AB8500_VAUX12REGU
, 0x04, 0x09, 0x0f),
700 REG_INIT(AB8500_VRF1VAUX3REGU
, 0x04, 0x0a, 0x03),
704 REG_INIT(AB8500_VSMPS1SEL1
, 0x04, 0x13, 0x3f),
708 REG_INIT(AB8500_VAUX1SEL
, 0x04, 0x1f, 0x0f),
712 REG_INIT(AB8500_VAUX2SEL
, 0x04, 0x20, 0x0f),
716 REG_INIT(AB8500_VRF1VAUX3SEL
, 0x04, 0x21, 0x07),
718 * 0x01, VextSupply12LP
720 REG_INIT(AB8500_REGUCTRL2SPARE
, 0x04, 0x22, 0x01),
725 * 0x20, Vintcore12Disch
729 REG_INIT(AB8500_REGUCTRLDISCH
, 0x04, 0x43, 0xfc),
732 * 0x04, VdmicPullDownEna
735 REG_INIT(AB8500_REGUCTRLDISCH2
, 0x04, 0x44, 0x16),
738 static __devinit
int ab8500_regulator_probe(struct platform_device
*pdev
)
740 struct ab8500
*ab8500
= dev_get_drvdata(pdev
->dev
.parent
);
741 struct ab8500_platform_data
*pdata
;
745 dev_err(&pdev
->dev
, "null mfd parent\n");
748 pdata
= dev_get_platdata(ab8500
->dev
);
750 dev_err(&pdev
->dev
, "null pdata\n");
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");
760 /* initialize registers */
761 for (i
= 0; i
< pdata
->num_regulator_reg_init
; i
++) {
765 id
= pdata
->regulator_reg_init
[i
].id
;
766 value
= pdata
->regulator_reg_init
[i
].value
;
768 /* check for configuration errors */
769 if (id
>= AB8500_NUM_REGULATOR_REGISTERS
) {
771 "Configuration error: id outside range.\n");
774 if (value
& ~ab8500_reg_init
[id
].mask
) {
776 "Configuration error: value outside mask.\n");
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
,
788 "Failed to initialize 0x%02x, 0x%02x.\n",
789 ab8500_reg_init
[id
].bank
,
790 ab8500_reg_init
[id
].addr
);
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
,
801 /* register all regulators */
802 for (i
= 0; i
< ARRAY_SIZE(ab8500_regulator_info
); i
++) {
803 struct ab8500_regulator_info
*info
= NULL
;
805 /* assign per-regulator data */
806 info
= &ab8500_regulator_info
[i
];
807 info
->dev
= &pdev
->dev
;
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
;
816 ARRAY_SIZE(ldo_vauxn_voltages
);
817 info
->voltage_mask
= 0xf;
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",
828 /* when we fail, un-register all earlier regulators */
830 info
= &ab8500_regulator_info
[i
];
831 regulator_unregister(info
->regulator
);
836 dev_vdbg(rdev_get_dev(info
->regulator
),
837 "%s-probed\n", info
->desc
.name
);
843 static __devexit
int ab8500_regulator_remove(struct platform_device
*pdev
)
847 for (i
= 0; i
< ARRAY_SIZE(ab8500_regulator_info
); i
++) {
848 struct ab8500_regulator_info
*info
= NULL
;
849 info
= &ab8500_regulator_info
[i
];
851 dev_vdbg(rdev_get_dev(info
->regulator
),
852 "%s-remove\n", info
->desc
.name
);
854 regulator_unregister(info
->regulator
);
860 static struct platform_driver ab8500_regulator_driver
= {
861 .probe
= ab8500_regulator_probe
,
862 .remove
= __devexit_p(ab8500_regulator_remove
),
864 .name
= "ab8500-regulator",
865 .owner
= THIS_MODULE
,
869 static int __init
ab8500_regulator_init(void)
873 ret
= platform_driver_register(&ab8500_regulator_driver
);
875 pr_err("Failed to register ab8500 regulator: %d\n", ret
);
879 subsys_initcall(ab8500_regulator_init
);
881 static void __exit
ab8500_regulator_exit(void)
883 platform_driver_unregister(&ab8500_regulator_driver
);
885 module_exit(ab8500_regulator_exit
);
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");