4 * Copyright (c) 2011 Samsung Electronics Co., Ltd
5 * http://www.samsung.com
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
14 #include <linux/bug.h>
15 #include <linux/delay.h>
16 #include <linux/err.h>
17 #include <linux/gpio.h>
18 #include <linux/slab.h>
19 #include <linux/module.h>
20 #include <linux/platform_device.h>
21 #include <linux/regulator/driver.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/mfd/s5m87xx/s5m-core.h>
24 #include <linux/mfd/s5m87xx/s5m-pmic.h>
28 struct s5m87xx_dev *iodev;
30 struct regulator_dev **rdev;
47 struct s5m_voltage_desc {
53 static const struct s5m_voltage_desc buck_voltage_val1 = {
59 static const struct s5m_voltage_desc buck_voltage_val2 = {
65 static const struct s5m_voltage_desc buck_voltage_val3 = {
71 static const struct s5m_voltage_desc ldo_voltage_val1 = {
77 static const struct s5m_voltage_desc ldo_voltage_val2 = {
83 static const struct s5m_voltage_desc *reg_voltage_map[] = {
84 [S5M8767_LDO1] = &ldo_voltage_val2,
85 [S5M8767_LDO2] = &ldo_voltage_val2,
86 [S5M8767_LDO3] = &ldo_voltage_val1,
87 [S5M8767_LDO4] = &ldo_voltage_val1,
88 [S5M8767_LDO5] = &ldo_voltage_val1,
89 [S5M8767_LDO6] = &ldo_voltage_val2,
90 [S5M8767_LDO7] = &ldo_voltage_val2,
91 [S5M8767_LDO8] = &ldo_voltage_val2,
92 [S5M8767_LDO9] = &ldo_voltage_val1,
93 [S5M8767_LDO10] = &ldo_voltage_val1,
94 [S5M8767_LDO11] = &ldo_voltage_val1,
95 [S5M8767_LDO12] = &ldo_voltage_val1,
96 [S5M8767_LDO13] = &ldo_voltage_val1,
97 [S5M8767_LDO14] = &ldo_voltage_val1,
98 [S5M8767_LDO15] = &ldo_voltage_val2,
99 [S5M8767_LDO16] = &ldo_voltage_val1,
100 [S5M8767_LDO17] = &ldo_voltage_val1,
101 [S5M8767_LDO18] = &ldo_voltage_val1,
102 [S5M8767_LDO19] = &ldo_voltage_val1,
103 [S5M8767_LDO20] = &ldo_voltage_val1,
104 [S5M8767_LDO21] = &ldo_voltage_val1,
105 [S5M8767_LDO22] = &ldo_voltage_val1,
106 [S5M8767_LDO23] = &ldo_voltage_val1,
107 [S5M8767_LDO24] = &ldo_voltage_val1,
108 [S5M8767_LDO25] = &ldo_voltage_val1,
109 [S5M8767_LDO26] = &ldo_voltage_val1,
110 [S5M8767_LDO27] = &ldo_voltage_val1,
111 [S5M8767_LDO28] = &ldo_voltage_val1,
112 [S5M8767_BUCK1] = &buck_voltage_val1,
113 [S5M8767_BUCK2] = &buck_voltage_val2,
114 [S5M8767_BUCK3] = &buck_voltage_val2,
115 [S5M8767_BUCK4] = &buck_voltage_val2,
116 [S5M8767_BUCK5] = &buck_voltage_val1,
117 [S5M8767_BUCK6] = &buck_voltage_val1,
118 [S5M8767_BUCK7] = NULL,
119 [S5M8767_BUCK8] = NULL,
120 [S5M8767_BUCK9] = &buck_voltage_val3,
123 static int s5m8767_list_voltage(struct regulator_dev *rdev,
124 unsigned int selector)
126 const struct s5m_voltage_desc *desc;
127 int reg_id = rdev_get_id(rdev);
130 if (reg_id >= ARRAY_SIZE(reg_voltage_map) || reg_id < 0)
133 desc = reg_voltage_map[reg_id];
137 val = desc->min + desc->step * selector;
144 static int s5m8767_get_register(struct regulator_dev *rdev, int *reg)
146 int reg_id = rdev_get_id(rdev);
149 case S5M8767_LDO1 ... S5M8767_LDO2:
150 *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
152 case S5M8767_LDO3 ... S5M8767_LDO28:
153 *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
156 *reg = S5M8767_REG_BUCK1CTRL1;
158 case S5M8767_BUCK2 ... S5M8767_BUCK4:
159 *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
162 *reg = S5M8767_REG_BUCK5CTRL1;
164 case S5M8767_BUCK6 ... S5M8767_BUCK9:
165 *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
174 static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
176 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
178 int mask = 0xc0, pattern = 0xc0;
181 ret = s5m8767_get_register(rdev, ®);
187 ret = s5m_reg_read(s5m8767->iodev, reg, &val);
191 return (val & mask) == pattern;
194 static int s5m8767_reg_enable(struct regulator_dev *rdev)
196 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
198 int mask = 0xc0, pattern = 0xc0;
200 ret = s5m8767_get_register(rdev, ®);
204 return s5m_reg_update(s5m8767->iodev, reg, pattern, mask);
207 static int s5m8767_reg_disable(struct regulator_dev *rdev)
209 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
211 int mask = 0xc0, pattern = 0xc0;
213 ret = s5m8767_get_register(rdev, ®);
217 return s5m_reg_update(s5m8767->iodev, reg, ~pattern, mask);
220 static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
222 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
223 int reg_id = rdev_get_id(rdev);
227 case S5M8767_LDO1 ... S5M8767_LDO2:
228 reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
230 case S5M8767_LDO3 ... S5M8767_LDO28:
231 reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
234 reg = S5M8767_REG_BUCK1CTRL2;
237 reg = S5M8767_REG_BUCK2DVS1;
238 if (s5m8767->buck2_gpiodvs)
239 reg += s5m8767->buck_gpioindex;
242 reg = S5M8767_REG_BUCK3DVS1;
243 if (s5m8767->buck3_gpiodvs)
244 reg += s5m8767->buck_gpioindex;
247 reg = S5M8767_REG_BUCK4DVS1;
248 if (s5m8767->buck4_gpiodvs)
249 reg += s5m8767->buck_gpioindex;
252 reg = S5M8767_REG_BUCK5CTRL2;
254 case S5M8767_BUCK6 ... S5M8767_BUCK9:
255 reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
266 static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
268 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
270 int reg_id = rdev_get_id(rdev);
273 ret = s5m8767_get_voltage_register(rdev, ®);
277 mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff;
279 ret = s5m_reg_read(s5m8767->iodev, reg, &val);
288 static int s5m8767_convert_voltage_to_sel(
289 const struct s5m_voltage_desc *desc,
290 int min_vol, int max_vol)
297 if (max_vol < desc->min || min_vol > desc->max)
300 selector = (min_vol - desc->min) / desc->step;
302 if (desc->min + desc->step * selector > max_vol)
308 static int s5m8767_set_voltage(struct regulator_dev *rdev,
309 int min_uV, int max_uV, unsigned *selector)
311 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
312 const struct s5m_voltage_desc *desc;
313 int reg_id = rdev_get_id(rdev);
319 case S5M8767_LDO1 ... S5M8767_LDO28:
322 case S5M8767_BUCK1 ... S5M8767_BUCK6:
325 case S5M8767_BUCK7 ... S5M8767_BUCK8:
334 desc = reg_voltage_map[reg_id];
336 i = s5m8767_convert_voltage_to_sel(desc, min_uV, max_uV);
340 ret = s5m8767_get_voltage_register(rdev, ®);
344 s5m_reg_read(s5m8767->iodev, reg, &val);
347 ret = s5m_reg_write(s5m8767->iodev, reg, val);
353 static inline void s5m8767_set_high(struct s5m8767_info *s5m8767)
355 int temp_index = s5m8767->buck_gpioindex;
357 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
358 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
359 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
362 static inline void s5m8767_set_low(struct s5m8767_info *s5m8767)
364 int temp_index = s5m8767->buck_gpioindex;
366 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
367 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
368 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
371 static int s5m8767_set_voltage_buck(struct regulator_dev *rdev,
372 int min_uV, int max_uV, unsigned *selector)
374 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
375 int reg_id = rdev_get_id(rdev);
376 const struct s5m_voltage_desc *desc;
377 int new_val, old_val, i = 0;
379 if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6)
384 return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
385 case S5M8767_BUCK2 ... S5M8767_BUCK4:
387 case S5M8767_BUCK5 ... S5M8767_BUCK6:
388 return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
390 return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
393 desc = reg_voltage_map[reg_id];
394 new_val = s5m8767_convert_voltage_to_sel(desc, min_uV, max_uV);
400 if (s5m8767->buck2_gpiodvs) {
401 while (s5m8767->buck2_vol[i] != new_val)
404 return s5m8767_set_voltage(rdev, min_uV,
408 if (s5m8767->buck3_gpiodvs) {
409 while (s5m8767->buck3_vol[i] != new_val)
412 return s5m8767_set_voltage(rdev, min_uV,
416 if (s5m8767->buck3_gpiodvs) {
417 while (s5m8767->buck4_vol[i] != new_val)
420 return s5m8767_set_voltage(rdev, min_uV,
425 old_val = s5m8767->buck_gpioindex;
426 s5m8767->buck_gpioindex = i;
429 s5m8767_set_high(s5m8767);
431 s5m8767_set_low(s5m8767);
437 static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
438 unsigned int old_sel,
439 unsigned int new_sel)
441 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
442 const struct s5m_voltage_desc *desc;
443 int reg_id = rdev_get_id(rdev);
445 desc = reg_voltage_map[reg_id];
447 if (old_sel < new_sel)
448 return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
449 s5m8767->ramp_delay * 1000);
453 static struct regulator_ops s5m8767_ldo_ops = {
454 .list_voltage = s5m8767_list_voltage,
455 .is_enabled = s5m8767_reg_is_enabled,
456 .enable = s5m8767_reg_enable,
457 .disable = s5m8767_reg_disable,
458 .get_voltage_sel = s5m8767_get_voltage_sel,
459 .set_voltage = s5m8767_set_voltage,
460 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
463 static struct regulator_ops s5m8767_buck_ops = {
464 .list_voltage = s5m8767_list_voltage,
465 .is_enabled = s5m8767_reg_is_enabled,
466 .enable = s5m8767_reg_enable,
467 .disable = s5m8767_reg_disable,
468 .get_voltage_sel = s5m8767_get_voltage_sel,
469 .set_voltage = s5m8767_set_voltage_buck,
470 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
473 #define regulator_desc_ldo(num) { \
475 .id = S5M8767_LDO##num, \
476 .ops = &s5m8767_ldo_ops, \
477 .type = REGULATOR_VOLTAGE, \
478 .owner = THIS_MODULE, \
480 #define regulator_desc_buck(num) { \
481 .name = "BUCK"#num, \
482 .id = S5M8767_BUCK##num, \
483 .ops = &s5m8767_buck_ops, \
484 .type = REGULATOR_VOLTAGE, \
485 .owner = THIS_MODULE, \
488 static struct regulator_desc regulators[] = {
489 regulator_desc_ldo(1),
490 regulator_desc_ldo(2),
491 regulator_desc_ldo(3),
492 regulator_desc_ldo(4),
493 regulator_desc_ldo(5),
494 regulator_desc_ldo(6),
495 regulator_desc_ldo(7),
496 regulator_desc_ldo(8),
497 regulator_desc_ldo(9),
498 regulator_desc_ldo(10),
499 regulator_desc_ldo(11),
500 regulator_desc_ldo(12),
501 regulator_desc_ldo(13),
502 regulator_desc_ldo(14),
503 regulator_desc_ldo(15),
504 regulator_desc_ldo(16),
505 regulator_desc_ldo(17),
506 regulator_desc_ldo(18),
507 regulator_desc_ldo(19),
508 regulator_desc_ldo(20),
509 regulator_desc_ldo(21),
510 regulator_desc_ldo(22),
511 regulator_desc_ldo(23),
512 regulator_desc_ldo(24),
513 regulator_desc_ldo(25),
514 regulator_desc_ldo(26),
515 regulator_desc_ldo(27),
516 regulator_desc_ldo(28),
517 regulator_desc_buck(1),
518 regulator_desc_buck(2),
519 regulator_desc_buck(3),
520 regulator_desc_buck(4),
521 regulator_desc_buck(5),
522 regulator_desc_buck(6),
523 regulator_desc_buck(7),
524 regulator_desc_buck(8),
525 regulator_desc_buck(9),
528 static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
530 struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent);
531 struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev);
532 struct regulator_dev **rdev;
533 struct s5m8767_info *s5m8767;
537 dev_err(pdev->dev.parent, "Platform data not supplied\n");
541 if (pdata->buck2_gpiodvs) {
542 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
543 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
548 if (pdata->buck3_gpiodvs) {
549 if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
550 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
555 if (pdata->buck4_gpiodvs) {
556 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
557 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
562 s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
567 size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
568 s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
572 rdev = s5m8767->rdev;
573 s5m8767->dev = &pdev->dev;
574 s5m8767->iodev = iodev;
575 s5m8767->num_regulators = S5M8767_REG_MAX - 2;
576 platform_set_drvdata(pdev, s5m8767);
578 s5m8767->buck_gpioindex = pdata->buck_default_idx;
579 s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
580 s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
581 s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
582 s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
583 s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
584 s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
585 s5m8767->ramp_delay = pdata->buck_ramp_delay;
586 s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
587 s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
588 s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
590 for (i = 0; i < 8; i++) {
591 if (s5m8767->buck2_gpiodvs) {
592 s5m8767->buck2_vol[i] =
593 s5m8767_convert_voltage_to_sel(
595 pdata->buck2_voltage[i],
596 pdata->buck2_voltage[i] +
597 buck_voltage_val2.step);
600 if (s5m8767->buck3_gpiodvs) {
601 s5m8767->buck3_vol[i] =
602 s5m8767_convert_voltage_to_sel(
604 pdata->buck3_voltage[i],
605 pdata->buck3_voltage[i] +
606 buck_voltage_val2.step);
609 if (s5m8767->buck4_gpiodvs) {
610 s5m8767->buck4_vol[i] =
611 s5m8767_convert_voltage_to_sel(
613 pdata->buck4_voltage[i],
614 pdata->buck4_voltage[i] +
615 buck_voltage_val2.step);
619 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
620 pdata->buck4_gpiodvs) {
621 if (gpio_is_valid(pdata->buck_gpios[0]) &&
622 gpio_is_valid(pdata->buck_gpios[1]) &&
623 gpio_is_valid(pdata->buck_gpios[2])) {
624 ret = gpio_request(pdata->buck_gpios[0],
627 dev_warn(&pdev->dev, "Duplicated gpio request for SET1\n");
629 ret = gpio_request(pdata->buck_gpios[1],
632 dev_warn(&pdev->dev, "Duplicated gpio request for SET2\n");
634 ret = gpio_request(pdata->buck_gpios[2],
637 dev_warn(&pdev->dev, "Duplicated gpio request for SET3\n");
639 gpio_direction_output(pdata->buck_gpios[0],
640 (s5m8767->buck_gpioindex >> 2) & 0x1);
642 gpio_direction_output(pdata->buck_gpios[1],
643 (s5m8767->buck_gpioindex >> 1) & 0x1);
645 gpio_direction_output(pdata->buck_gpios[2],
646 (s5m8767->buck_gpioindex >> 0) & 0x1);
649 dev_err(&pdev->dev, "GPIO NOT VALID\n");
655 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL,
656 (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
657 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
658 (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
659 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
660 (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
662 /* Initialize GPIO DVS registers */
663 for (i = 0; i < 8; i++) {
664 if (s5m8767->buck2_gpiodvs) {
665 s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i,
666 s5m8767->buck2_vol[i]);
669 if (s5m8767->buck3_gpiodvs) {
670 s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
671 s5m8767->buck3_vol[i]);
674 if (s5m8767->buck4_gpiodvs) {
675 s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
676 s5m8767->buck4_vol[i]);
679 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, 0x78, 0xff);
680 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, 0x58, 0xff);
681 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, 0x78, 0xff);
683 if (s5m8767->buck2_ramp)
684 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
686 if (s5m8767->buck3_ramp)
687 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
689 if (s5m8767->buck4_ramp)
690 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
692 if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
693 || s5m8767->buck4_ramp) {
694 switch (s5m8767->ramp_delay) {
696 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
700 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
704 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
708 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
712 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
717 for (i = 0; i < pdata->num_regulators; i++) {
718 const struct s5m_voltage_desc *desc;
719 int id = pdata->regulators[i].id;
721 desc = reg_voltage_map[id];
723 regulators[id].n_voltages =
724 (desc->max - desc->min) / desc->step + 1;
726 rdev[i] = regulator_register(®ulators[id], s5m8767->dev,
727 pdata->regulators[i].initdata, s5m8767, NULL);
728 if (IS_ERR(rdev[i])) {
729 ret = PTR_ERR(rdev[i]);
730 dev_err(s5m8767->dev, "regulator init failed for %d\n",
739 for (i = 0; i < s5m8767->num_regulators; i++)
741 regulator_unregister(rdev[i]);
746 static int __devexit s5m8767_pmic_remove(struct platform_device *pdev)
748 struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
749 struct regulator_dev **rdev = s5m8767->rdev;
752 for (i = 0; i < s5m8767->num_regulators; i++)
754 regulator_unregister(rdev[i]);
759 static const struct platform_device_id s5m8767_pmic_id[] = {
760 { "s5m8767-pmic", 0},
763 MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
765 static struct platform_driver s5m8767_pmic_driver = {
767 .name = "s5m8767-pmic",
768 .owner = THIS_MODULE,
770 .probe = s5m8767_pmic_probe,
771 .remove = __devexit_p(s5m8767_pmic_remove),
772 .id_table = s5m8767_pmic_id,
775 static int __init s5m8767_pmic_init(void)
777 return platform_driver_register(&s5m8767_pmic_driver);
779 subsys_initcall(s5m8767_pmic_init);
781 static void __exit s5m8767_pmic_exit(void)
783 platform_driver_unregister(&s5m8767_pmic_driver);
785 module_exit(s5m8767_pmic_exit);
787 /* Module information */
788 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
789 MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
790 MODULE_LICENSE("GPL");