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/err.h>
16 #include <linux/gpio.h>
17 #include <linux/slab.h>
18 #include <linux/module.h>
19 #include <linux/platform_device.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/mfd/samsung/core.h>
23 #include <linux/mfd/samsung/s5m8767.h>
27 struct sec_pmic_dev *iodev;
29 struct regulator_dev **rdev;
30 struct sec_opmode_data *opmode;
48 struct sec_voltage_desc {
54 static const struct sec_voltage_desc buck_voltage_val1 = {
60 static const struct sec_voltage_desc buck_voltage_val2 = {
66 static const struct sec_voltage_desc buck_voltage_val3 = {
72 static const struct sec_voltage_desc ldo_voltage_val1 = {
78 static const struct sec_voltage_desc ldo_voltage_val2 = {
84 static const struct sec_voltage_desc *reg_voltage_map[] = {
85 [S5M8767_LDO1] = &ldo_voltage_val2,
86 [S5M8767_LDO2] = &ldo_voltage_val2,
87 [S5M8767_LDO3] = &ldo_voltage_val1,
88 [S5M8767_LDO4] = &ldo_voltage_val1,
89 [S5M8767_LDO5] = &ldo_voltage_val1,
90 [S5M8767_LDO6] = &ldo_voltage_val2,
91 [S5M8767_LDO7] = &ldo_voltage_val2,
92 [S5M8767_LDO8] = &ldo_voltage_val2,
93 [S5M8767_LDO9] = &ldo_voltage_val1,
94 [S5M8767_LDO10] = &ldo_voltage_val1,
95 [S5M8767_LDO11] = &ldo_voltage_val1,
96 [S5M8767_LDO12] = &ldo_voltage_val1,
97 [S5M8767_LDO13] = &ldo_voltage_val1,
98 [S5M8767_LDO14] = &ldo_voltage_val1,
99 [S5M8767_LDO15] = &ldo_voltage_val2,
100 [S5M8767_LDO16] = &ldo_voltage_val1,
101 [S5M8767_LDO17] = &ldo_voltage_val1,
102 [S5M8767_LDO18] = &ldo_voltage_val1,
103 [S5M8767_LDO19] = &ldo_voltage_val1,
104 [S5M8767_LDO20] = &ldo_voltage_val1,
105 [S5M8767_LDO21] = &ldo_voltage_val1,
106 [S5M8767_LDO22] = &ldo_voltage_val1,
107 [S5M8767_LDO23] = &ldo_voltage_val1,
108 [S5M8767_LDO24] = &ldo_voltage_val1,
109 [S5M8767_LDO25] = &ldo_voltage_val1,
110 [S5M8767_LDO26] = &ldo_voltage_val1,
111 [S5M8767_LDO27] = &ldo_voltage_val1,
112 [S5M8767_LDO28] = &ldo_voltage_val1,
113 [S5M8767_BUCK1] = &buck_voltage_val1,
114 [S5M8767_BUCK2] = &buck_voltage_val2,
115 [S5M8767_BUCK3] = &buck_voltage_val2,
116 [S5M8767_BUCK4] = &buck_voltage_val2,
117 [S5M8767_BUCK5] = &buck_voltage_val1,
118 [S5M8767_BUCK6] = &buck_voltage_val1,
119 [S5M8767_BUCK7] = NULL,
120 [S5M8767_BUCK8] = NULL,
121 [S5M8767_BUCK9] = &buck_voltage_val3,
124 static unsigned int s5m8767_opmode_reg[][4] = {
125 /* {OFF, ON, LOWPOWER, SUSPEND} */
127 {0x0, 0x3, 0x2, 0x1}, /* LDO1 */
128 {0x0, 0x3, 0x2, 0x1},
129 {0x0, 0x3, 0x2, 0x1},
130 {0x0, 0x0, 0x0, 0x0},
131 {0x0, 0x3, 0x2, 0x1}, /* LDO5 */
132 {0x0, 0x3, 0x2, 0x1},
133 {0x0, 0x3, 0x2, 0x1},
134 {0x0, 0x3, 0x2, 0x1},
135 {0x0, 0x3, 0x2, 0x1},
136 {0x0, 0x3, 0x2, 0x1}, /* LDO10 */
137 {0x0, 0x3, 0x2, 0x1},
138 {0x0, 0x3, 0x2, 0x1},
139 {0x0, 0x3, 0x2, 0x1},
140 {0x0, 0x3, 0x2, 0x1},
141 {0x0, 0x3, 0x2, 0x1}, /* LDO15 */
142 {0x0, 0x3, 0x2, 0x1},
143 {0x0, 0x3, 0x2, 0x1},
144 {0x0, 0x0, 0x0, 0x0},
145 {0x0, 0x3, 0x2, 0x1},
146 {0x0, 0x3, 0x2, 0x1}, /* LDO20 */
147 {0x0, 0x3, 0x2, 0x1},
148 {0x0, 0x3, 0x2, 0x1},
149 {0x0, 0x0, 0x0, 0x0},
150 {0x0, 0x3, 0x2, 0x1},
151 {0x0, 0x3, 0x2, 0x1}, /* LDO25 */
152 {0x0, 0x3, 0x2, 0x1},
153 {0x0, 0x3, 0x2, 0x1},
154 {0x0, 0x3, 0x2, 0x1}, /* LDO28 */
156 /* BUCK1 ... BUCK9 */
157 {0x0, 0x3, 0x1, 0x1}, /* BUCK1 */
158 {0x0, 0x3, 0x1, 0x1},
159 {0x0, 0x3, 0x1, 0x1},
160 {0x0, 0x3, 0x1, 0x1},
161 {0x0, 0x3, 0x2, 0x1}, /* BUCK5 */
162 {0x0, 0x3, 0x1, 0x1},
163 {0x0, 0x3, 0x1, 0x1},
164 {0x0, 0x3, 0x1, 0x1},
165 {0x0, 0x3, 0x1, 0x1}, /* BUCK9 */
168 static int s5m8767_get_register(struct regulator_dev *rdev, int *reg,
171 int reg_id = rdev_get_id(rdev);
173 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
176 case S5M8767_LDO1 ... S5M8767_LDO2:
177 *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
179 case S5M8767_LDO3 ... S5M8767_LDO28:
180 *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
183 *reg = S5M8767_REG_BUCK1CTRL1;
185 case S5M8767_BUCK2 ... S5M8767_BUCK4:
186 *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
189 *reg = S5M8767_REG_BUCK5CTRL1;
191 case S5M8767_BUCK6 ... S5M8767_BUCK9:
192 *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
198 mode = s5m8767->opmode[reg_id].mode;
199 *enable_ctrl = s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
203 static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
205 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
207 int mask = 0xc0, enable_ctrl;
210 ret = s5m8767_get_register(rdev, ®, &enable_ctrl);
216 ret = sec_reg_read(s5m8767->iodev, reg, &val);
220 return (val & mask) == enable_ctrl;
223 static int s5m8767_reg_enable(struct regulator_dev *rdev)
225 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
227 int mask = 0xc0, enable_ctrl;
229 ret = s5m8767_get_register(rdev, ®, &enable_ctrl);
233 return sec_reg_update(s5m8767->iodev, reg, enable_ctrl, mask);
236 static int s5m8767_reg_disable(struct regulator_dev *rdev)
238 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
240 int mask = 0xc0, enable_ctrl;
242 ret = s5m8767_get_register(rdev, ®, &enable_ctrl);
246 return sec_reg_update(s5m8767->iodev, reg, ~mask, mask);
249 static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
251 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
252 int reg_id = rdev_get_id(rdev);
256 case S5M8767_LDO1 ... S5M8767_LDO2:
257 reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
259 case S5M8767_LDO3 ... S5M8767_LDO28:
260 reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
263 reg = S5M8767_REG_BUCK1CTRL2;
266 reg = S5M8767_REG_BUCK2DVS2;
267 if (s5m8767->buck2_gpiodvs)
268 reg += s5m8767->buck_gpioindex;
271 reg = S5M8767_REG_BUCK3DVS2;
272 if (s5m8767->buck3_gpiodvs)
273 reg += s5m8767->buck_gpioindex;
276 reg = S5M8767_REG_BUCK4DVS2;
277 if (s5m8767->buck4_gpiodvs)
278 reg += s5m8767->buck_gpioindex;
281 reg = S5M8767_REG_BUCK5CTRL2;
283 case S5M8767_BUCK6 ... S5M8767_BUCK9:
284 reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
295 static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
297 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
299 int reg_id = rdev_get_id(rdev);
302 ret = s5m8767_get_voltage_register(rdev, ®);
306 mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff;
308 ret = sec_reg_read(s5m8767->iodev, reg, &val);
317 static int s5m8767_convert_voltage_to_sel(
318 const struct sec_voltage_desc *desc,
319 int min_vol, int max_vol)
326 if (max_vol < desc->min || min_vol > desc->max)
329 if (min_vol < desc->min)
332 selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
334 if (desc->min + desc->step * selector > max_vol)
340 static inline int s5m8767_set_high(struct s5m8767_info *s5m8767)
342 int temp_index = s5m8767->buck_gpioindex;
344 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
345 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
346 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
351 static inline int s5m8767_set_low(struct s5m8767_info *s5m8767)
353 int temp_index = s5m8767->buck_gpioindex;
355 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
356 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
357 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
362 static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
365 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
366 int reg_id = rdev_get_id(rdev);
367 int reg, mask, ret = 0, old_index, index = 0;
368 u8 *buck234_vol = NULL;
371 case S5M8767_LDO1 ... S5M8767_LDO28:
374 case S5M8767_BUCK1 ... S5M8767_BUCK6:
376 if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs)
377 buck234_vol = &s5m8767->buck2_vol[0];
378 else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs)
379 buck234_vol = &s5m8767->buck3_vol[0];
380 else if (reg_id == S5M8767_BUCK4 && s5m8767->buck4_gpiodvs)
381 buck234_vol = &s5m8767->buck4_vol[0];
383 case S5M8767_BUCK7 ... S5M8767_BUCK8:
392 /* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */
394 while (*buck234_vol != selector) {
398 old_index = s5m8767->buck_gpioindex;
399 s5m8767->buck_gpioindex = index;
401 if (index > old_index)
402 return s5m8767_set_high(s5m8767);
404 return s5m8767_set_low(s5m8767);
406 ret = s5m8767_get_voltage_register(rdev, ®);
410 return sec_reg_update(s5m8767->iodev, reg, selector, mask);
414 static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
415 unsigned int old_sel,
416 unsigned int new_sel)
418 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
419 const struct sec_voltage_desc *desc;
420 int reg_id = rdev_get_id(rdev);
422 desc = reg_voltage_map[reg_id];
424 if ((old_sel < new_sel) && s5m8767->ramp_delay)
425 return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
426 s5m8767->ramp_delay * 1000);
430 static struct regulator_ops s5m8767_ops = {
431 .list_voltage = regulator_list_voltage_linear,
432 .is_enabled = s5m8767_reg_is_enabled,
433 .enable = s5m8767_reg_enable,
434 .disable = s5m8767_reg_disable,
435 .get_voltage_sel = s5m8767_get_voltage_sel,
436 .set_voltage_sel = s5m8767_set_voltage_sel,
437 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
440 static struct regulator_ops s5m8767_buck78_ops = {
441 .is_enabled = s5m8767_reg_is_enabled,
442 .enable = s5m8767_reg_enable,
443 .disable = s5m8767_reg_disable,
446 #define s5m8767_regulator_desc(_name) { \
448 .id = S5M8767_##_name, \
449 .ops = &s5m8767_ops, \
450 .type = REGULATOR_VOLTAGE, \
451 .owner = THIS_MODULE, \
454 #define s5m8767_regulator_buck78_desc(_name) { \
456 .id = S5M8767_##_name, \
457 .ops = &s5m8767_buck78_ops, \
458 .type = REGULATOR_VOLTAGE, \
459 .owner = THIS_MODULE, \
462 static struct regulator_desc regulators[] = {
463 s5m8767_regulator_desc(LDO1),
464 s5m8767_regulator_desc(LDO2),
465 s5m8767_regulator_desc(LDO3),
466 s5m8767_regulator_desc(LDO4),
467 s5m8767_regulator_desc(LDO5),
468 s5m8767_regulator_desc(LDO6),
469 s5m8767_regulator_desc(LDO7),
470 s5m8767_regulator_desc(LDO8),
471 s5m8767_regulator_desc(LDO9),
472 s5m8767_regulator_desc(LDO10),
473 s5m8767_regulator_desc(LDO11),
474 s5m8767_regulator_desc(LDO12),
475 s5m8767_regulator_desc(LDO13),
476 s5m8767_regulator_desc(LDO14),
477 s5m8767_regulator_desc(LDO15),
478 s5m8767_regulator_desc(LDO16),
479 s5m8767_regulator_desc(LDO17),
480 s5m8767_regulator_desc(LDO18),
481 s5m8767_regulator_desc(LDO19),
482 s5m8767_regulator_desc(LDO20),
483 s5m8767_regulator_desc(LDO21),
484 s5m8767_regulator_desc(LDO22),
485 s5m8767_regulator_desc(LDO23),
486 s5m8767_regulator_desc(LDO24),
487 s5m8767_regulator_desc(LDO25),
488 s5m8767_regulator_desc(LDO26),
489 s5m8767_regulator_desc(LDO27),
490 s5m8767_regulator_desc(LDO28),
491 s5m8767_regulator_desc(BUCK1),
492 s5m8767_regulator_desc(BUCK2),
493 s5m8767_regulator_desc(BUCK3),
494 s5m8767_regulator_desc(BUCK4),
495 s5m8767_regulator_desc(BUCK5),
496 s5m8767_regulator_desc(BUCK6),
497 s5m8767_regulator_buck78_desc(BUCK7),
498 s5m8767_regulator_buck78_desc(BUCK8),
499 s5m8767_regulator_desc(BUCK9),
502 static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
504 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
505 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
506 struct regulator_config config = { };
507 struct regulator_dev **rdev;
508 struct s5m8767_info *s5m8767;
509 int i, ret, size, buck_init;
512 dev_err(pdev->dev.parent, "Platform data not supplied\n");
516 if (pdata->buck2_gpiodvs) {
517 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
518 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
523 if (pdata->buck3_gpiodvs) {
524 if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
525 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
530 if (pdata->buck4_gpiodvs) {
531 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
532 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
537 s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
542 size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
543 s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
547 rdev = s5m8767->rdev;
548 s5m8767->dev = &pdev->dev;
549 s5m8767->iodev = iodev;
550 s5m8767->num_regulators = S5M8767_REG_MAX - 2;
551 platform_set_drvdata(pdev, s5m8767);
553 s5m8767->buck_gpioindex = pdata->buck_default_idx;
554 s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
555 s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
556 s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
557 s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
558 s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
559 s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
560 s5m8767->buck_ds[0] = pdata->buck_ds[0];
561 s5m8767->buck_ds[1] = pdata->buck_ds[1];
562 s5m8767->buck_ds[2] = pdata->buck_ds[2];
564 s5m8767->ramp_delay = pdata->buck_ramp_delay;
565 s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
566 s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
567 s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
568 s5m8767->opmode = pdata->opmode;
570 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
573 buck_voltage_val2.step);
575 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS2, buck_init);
577 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
580 buck_voltage_val2.step);
582 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS2, buck_init);
584 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
587 buck_voltage_val2.step);
589 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS2, buck_init);
591 for (i = 0; i < 8; i++) {
592 if (s5m8767->buck2_gpiodvs) {
593 s5m8767->buck2_vol[i] =
594 s5m8767_convert_voltage_to_sel(
596 pdata->buck2_voltage[i],
597 pdata->buck2_voltage[i] +
598 buck_voltage_val2.step);
601 if (s5m8767->buck3_gpiodvs) {
602 s5m8767->buck3_vol[i] =
603 s5m8767_convert_voltage_to_sel(
605 pdata->buck3_voltage[i],
606 pdata->buck3_voltage[i] +
607 buck_voltage_val2.step);
610 if (s5m8767->buck4_gpiodvs) {
611 s5m8767->buck4_vol[i] =
612 s5m8767_convert_voltage_to_sel(
614 pdata->buck4_voltage[i],
615 pdata->buck4_voltage[i] +
616 buck_voltage_val2.step);
620 if (gpio_is_valid(pdata->buck_gpios[0]) &&
621 gpio_is_valid(pdata->buck_gpios[1]) &&
622 gpio_is_valid(pdata->buck_gpios[2])) {
623 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[0],
628 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1],
633 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2],
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);
648 dev_err(&pdev->dev, "GPIO NOT VALID\n");
653 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2");
657 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3");
661 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4");
666 gpio_direction_output(pdata->buck_ds[0], 0x0);
668 gpio_direction_output(pdata->buck_ds[1], 0x0);
670 gpio_direction_output(pdata->buck_ds[2], 0x0);
672 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
673 pdata->buck4_gpiodvs) {
674 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL,
675 (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1),
677 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
678 (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1),
680 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
681 (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1),
685 /* Initialize GPIO DVS registers */
686 for (i = 0; i < 8; i++) {
687 if (s5m8767->buck2_gpiodvs) {
688 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i,
689 s5m8767->buck2_vol[i]);
692 if (s5m8767->buck3_gpiodvs) {
693 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
694 s5m8767->buck3_vol[i]);
697 if (s5m8767->buck4_gpiodvs) {
698 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
699 s5m8767->buck4_vol[i]);
703 if (s5m8767->buck2_ramp)
704 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
706 if (s5m8767->buck3_ramp)
707 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
709 if (s5m8767->buck4_ramp)
710 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
712 if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
713 || s5m8767->buck4_ramp) {
714 switch (s5m8767->ramp_delay) {
716 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
720 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
724 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
728 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
732 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
736 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
741 for (i = 0; i < pdata->num_regulators; i++) {
742 const struct sec_voltage_desc *desc;
743 int id = pdata->regulators[i].id;
745 desc = reg_voltage_map[id];
747 regulators[id].n_voltages =
748 (desc->max - desc->min) / desc->step + 1;
749 regulators[id].min_uV = desc->min;
750 regulators[id].uV_step = desc->step;
753 config.dev = s5m8767->dev;
754 config.init_data = pdata->regulators[i].initdata;
755 config.driver_data = s5m8767;
757 rdev[i] = regulator_register(®ulators[id], &config);
758 if (IS_ERR(rdev[i])) {
759 ret = PTR_ERR(rdev[i]);
760 dev_err(s5m8767->dev, "regulator init failed for %d\n",
769 for (i = 0; i < s5m8767->num_regulators; i++)
771 regulator_unregister(rdev[i]);
776 static int __devexit s5m8767_pmic_remove(struct platform_device *pdev)
778 struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
779 struct regulator_dev **rdev = s5m8767->rdev;
782 for (i = 0; i < s5m8767->num_regulators; i++)
784 regulator_unregister(rdev[i]);
789 static const struct platform_device_id s5m8767_pmic_id[] = {
790 { "s5m8767-pmic", 0},
793 MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
795 static struct platform_driver s5m8767_pmic_driver = {
797 .name = "s5m8767-pmic",
798 .owner = THIS_MODULE,
800 .probe = s5m8767_pmic_probe,
801 .remove = s5m8767_pmic_remove,
802 .id_table = s5m8767_pmic_id,
805 static int __init s5m8767_pmic_init(void)
807 return platform_driver_register(&s5m8767_pmic_driver);
809 subsys_initcall(s5m8767_pmic_init);
811 static void __exit s5m8767_pmic_exit(void)
813 platform_driver_unregister(&s5m8767_pmic_driver);
815 module_exit(s5m8767_pmic_exit);
817 /* Module information */
818 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
819 MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
820 MODULE_LICENSE("GPL");