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 i, 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 for (i = 0; i < s5m8767->num_regulators; i++) {
199 if (s5m8767->opmode[i].id == reg_id) {
200 mode = s5m8767->opmode[i].mode;
205 if (i < s5m8767->num_regulators)
207 s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
212 static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
214 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
216 int mask = 0xc0, enable_ctrl;
219 ret = s5m8767_get_register(rdev, ®, &enable_ctrl);
225 ret = sec_reg_read(s5m8767->iodev, reg, &val);
229 return (val & mask) == enable_ctrl;
232 static int s5m8767_reg_enable(struct regulator_dev *rdev)
234 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
236 int mask = 0xc0, enable_ctrl;
238 ret = s5m8767_get_register(rdev, ®, &enable_ctrl);
242 return sec_reg_update(s5m8767->iodev, reg, enable_ctrl, mask);
245 static int s5m8767_reg_disable(struct regulator_dev *rdev)
247 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
249 int mask = 0xc0, enable_ctrl;
251 ret = s5m8767_get_register(rdev, ®, &enable_ctrl);
255 return sec_reg_update(s5m8767->iodev, reg, ~mask, mask);
258 static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
260 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
261 int reg_id = rdev_get_id(rdev);
265 case S5M8767_LDO1 ... S5M8767_LDO2:
266 reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
268 case S5M8767_LDO3 ... S5M8767_LDO28:
269 reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
272 reg = S5M8767_REG_BUCK1CTRL2;
275 reg = S5M8767_REG_BUCK2DVS1;
276 if (s5m8767->buck2_gpiodvs)
277 reg += s5m8767->buck_gpioindex;
280 reg = S5M8767_REG_BUCK3DVS1;
281 if (s5m8767->buck3_gpiodvs)
282 reg += s5m8767->buck_gpioindex;
285 reg = S5M8767_REG_BUCK4DVS1;
286 if (s5m8767->buck4_gpiodvs)
287 reg += s5m8767->buck_gpioindex;
290 reg = S5M8767_REG_BUCK5CTRL2;
292 case S5M8767_BUCK6 ... S5M8767_BUCK9:
293 reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
304 static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
306 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
308 int reg_id = rdev_get_id(rdev);
311 ret = s5m8767_get_voltage_register(rdev, ®);
315 mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff;
317 ret = sec_reg_read(s5m8767->iodev, reg, &val);
326 static int s5m8767_convert_voltage_to_sel(
327 const struct sec_voltage_desc *desc,
328 int min_vol, int max_vol)
335 if (max_vol < desc->min || min_vol > desc->max)
338 if (min_vol < desc->min)
341 selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
343 if (desc->min + desc->step * selector > max_vol)
349 static inline int s5m8767_set_high(struct s5m8767_info *s5m8767)
351 int temp_index = s5m8767->buck_gpioindex;
353 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
354 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
355 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
360 static inline int s5m8767_set_low(struct s5m8767_info *s5m8767)
362 int temp_index = s5m8767->buck_gpioindex;
364 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
365 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
366 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
371 static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
374 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
375 int reg_id = rdev_get_id(rdev);
376 int reg, mask, ret = 0, old_index, index = 0;
377 u8 *buck234_vol = NULL;
380 case S5M8767_LDO1 ... S5M8767_LDO28:
383 case S5M8767_BUCK1 ... S5M8767_BUCK6:
385 if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs)
386 buck234_vol = &s5m8767->buck2_vol[0];
387 else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs)
388 buck234_vol = &s5m8767->buck3_vol[0];
389 else if (reg_id == S5M8767_BUCK4 && s5m8767->buck4_gpiodvs)
390 buck234_vol = &s5m8767->buck4_vol[0];
392 case S5M8767_BUCK7 ... S5M8767_BUCK8:
401 /* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */
403 while (*buck234_vol != selector) {
407 old_index = s5m8767->buck_gpioindex;
408 s5m8767->buck_gpioindex = index;
410 if (index > old_index)
411 return s5m8767_set_high(s5m8767);
413 return s5m8767_set_low(s5m8767);
415 ret = s5m8767_get_voltage_register(rdev, ®);
419 return sec_reg_update(s5m8767->iodev, reg, selector, mask);
423 static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
424 unsigned int old_sel,
425 unsigned int new_sel)
427 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
428 const struct sec_voltage_desc *desc;
429 int reg_id = rdev_get_id(rdev);
431 desc = reg_voltage_map[reg_id];
433 if ((old_sel < new_sel) && s5m8767->ramp_delay)
434 return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
435 s5m8767->ramp_delay * 1000);
439 static struct regulator_ops s5m8767_ops = {
440 .list_voltage = regulator_list_voltage_linear,
441 .is_enabled = s5m8767_reg_is_enabled,
442 .enable = s5m8767_reg_enable,
443 .disable = s5m8767_reg_disable,
444 .get_voltage_sel = s5m8767_get_voltage_sel,
445 .set_voltage_sel = s5m8767_set_voltage_sel,
446 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
449 static struct regulator_ops s5m8767_buck78_ops = {
450 .is_enabled = s5m8767_reg_is_enabled,
451 .enable = s5m8767_reg_enable,
452 .disable = s5m8767_reg_disable,
455 #define s5m8767_regulator_desc(_name) { \
457 .id = S5M8767_##_name, \
458 .ops = &s5m8767_ops, \
459 .type = REGULATOR_VOLTAGE, \
460 .owner = THIS_MODULE, \
463 #define s5m8767_regulator_buck78_desc(_name) { \
465 .id = S5M8767_##_name, \
466 .ops = &s5m8767_buck78_ops, \
467 .type = REGULATOR_VOLTAGE, \
468 .owner = THIS_MODULE, \
471 static struct regulator_desc regulators[] = {
472 s5m8767_regulator_desc(LDO1),
473 s5m8767_regulator_desc(LDO2),
474 s5m8767_regulator_desc(LDO3),
475 s5m8767_regulator_desc(LDO4),
476 s5m8767_regulator_desc(LDO5),
477 s5m8767_regulator_desc(LDO6),
478 s5m8767_regulator_desc(LDO7),
479 s5m8767_regulator_desc(LDO8),
480 s5m8767_regulator_desc(LDO9),
481 s5m8767_regulator_desc(LDO10),
482 s5m8767_regulator_desc(LDO11),
483 s5m8767_regulator_desc(LDO12),
484 s5m8767_regulator_desc(LDO13),
485 s5m8767_regulator_desc(LDO14),
486 s5m8767_regulator_desc(LDO15),
487 s5m8767_regulator_desc(LDO16),
488 s5m8767_regulator_desc(LDO17),
489 s5m8767_regulator_desc(LDO18),
490 s5m8767_regulator_desc(LDO19),
491 s5m8767_regulator_desc(LDO20),
492 s5m8767_regulator_desc(LDO21),
493 s5m8767_regulator_desc(LDO22),
494 s5m8767_regulator_desc(LDO23),
495 s5m8767_regulator_desc(LDO24),
496 s5m8767_regulator_desc(LDO25),
497 s5m8767_regulator_desc(LDO26),
498 s5m8767_regulator_desc(LDO27),
499 s5m8767_regulator_desc(LDO28),
500 s5m8767_regulator_desc(BUCK1),
501 s5m8767_regulator_desc(BUCK2),
502 s5m8767_regulator_desc(BUCK3),
503 s5m8767_regulator_desc(BUCK4),
504 s5m8767_regulator_desc(BUCK5),
505 s5m8767_regulator_desc(BUCK6),
506 s5m8767_regulator_buck78_desc(BUCK7),
507 s5m8767_regulator_buck78_desc(BUCK8),
508 s5m8767_regulator_desc(BUCK9),
511 static int s5m8767_pmic_probe(struct platform_device *pdev)
513 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
514 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
515 struct regulator_config config = { };
516 struct regulator_dev **rdev;
517 struct s5m8767_info *s5m8767;
518 int i, ret, size, buck_init;
521 dev_err(pdev->dev.parent, "Platform data not supplied\n");
525 if (pdata->buck2_gpiodvs) {
526 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
527 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
532 if (pdata->buck3_gpiodvs) {
533 if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
534 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
539 if (pdata->buck4_gpiodvs) {
540 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
541 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
546 s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
551 size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
552 s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
556 rdev = s5m8767->rdev;
557 s5m8767->dev = &pdev->dev;
558 s5m8767->iodev = iodev;
559 s5m8767->num_regulators = pdata->num_regulators;
560 platform_set_drvdata(pdev, s5m8767);
562 s5m8767->buck_gpioindex = pdata->buck_default_idx;
563 s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
564 s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
565 s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
566 s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
567 s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
568 s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
569 s5m8767->buck_ds[0] = pdata->buck_ds[0];
570 s5m8767->buck_ds[1] = pdata->buck_ds[1];
571 s5m8767->buck_ds[2] = pdata->buck_ds[2];
573 s5m8767->ramp_delay = pdata->buck_ramp_delay;
574 s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
575 s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
576 s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
577 s5m8767->opmode = pdata->opmode;
579 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
582 buck_voltage_val2.step);
584 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS2, buck_init);
586 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
589 buck_voltage_val2.step);
591 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS2, buck_init);
593 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
596 buck_voltage_val2.step);
598 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS2, buck_init);
600 for (i = 0; i < 8; i++) {
601 if (s5m8767->buck2_gpiodvs) {
602 s5m8767->buck2_vol[i] =
603 s5m8767_convert_voltage_to_sel(
605 pdata->buck2_voltage[i],
606 pdata->buck2_voltage[i] +
607 buck_voltage_val2.step);
610 if (s5m8767->buck3_gpiodvs) {
611 s5m8767->buck3_vol[i] =
612 s5m8767_convert_voltage_to_sel(
614 pdata->buck3_voltage[i],
615 pdata->buck3_voltage[i] +
616 buck_voltage_val2.step);
619 if (s5m8767->buck4_gpiodvs) {
620 s5m8767->buck4_vol[i] =
621 s5m8767_convert_voltage_to_sel(
623 pdata->buck4_voltage[i],
624 pdata->buck4_voltage[i] +
625 buck_voltage_val2.step);
629 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
630 pdata->buck4_gpiodvs) {
632 if (!gpio_is_valid(pdata->buck_gpios[0]) ||
633 !gpio_is_valid(pdata->buck_gpios[1]) ||
634 !gpio_is_valid(pdata->buck_gpios[2])) {
635 dev_err(&pdev->dev, "GPIO NOT VALID\n");
639 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[0],
644 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1],
649 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2],
655 gpio_direction_output(pdata->buck_gpios[0],
656 (s5m8767->buck_gpioindex >> 2) & 0x1);
658 gpio_direction_output(pdata->buck_gpios[1],
659 (s5m8767->buck_gpioindex >> 1) & 0x1);
661 gpio_direction_output(pdata->buck_gpios[2],
662 (s5m8767->buck_gpioindex >> 0) & 0x1);
665 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2");
669 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3");
673 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4");
678 gpio_direction_output(pdata->buck_ds[0], 0x0);
680 gpio_direction_output(pdata->buck_ds[1], 0x0);
682 gpio_direction_output(pdata->buck_ds[2], 0x0);
684 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
685 pdata->buck4_gpiodvs) {
686 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL,
687 (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1),
689 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
690 (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1),
692 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
693 (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1),
697 /* Initialize GPIO DVS registers */
698 for (i = 0; i < 8; i++) {
699 if (s5m8767->buck2_gpiodvs) {
700 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i,
701 s5m8767->buck2_vol[i]);
704 if (s5m8767->buck3_gpiodvs) {
705 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
706 s5m8767->buck3_vol[i]);
709 if (s5m8767->buck4_gpiodvs) {
710 sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
711 s5m8767->buck4_vol[i]);
715 if (s5m8767->buck2_ramp)
716 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
718 if (s5m8767->buck3_ramp)
719 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
721 if (s5m8767->buck4_ramp)
722 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
724 if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
725 || s5m8767->buck4_ramp) {
726 switch (s5m8767->ramp_delay) {
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,
740 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
744 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
748 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
753 for (i = 0; i < pdata->num_regulators; i++) {
754 const struct sec_voltage_desc *desc;
755 int id = pdata->regulators[i].id;
757 desc = reg_voltage_map[id];
759 regulators[id].n_voltages =
760 (desc->max - desc->min) / desc->step + 1;
761 regulators[id].min_uV = desc->min;
762 regulators[id].uV_step = desc->step;
765 config.dev = s5m8767->dev;
766 config.init_data = pdata->regulators[i].initdata;
767 config.driver_data = s5m8767;
769 rdev[i] = regulator_register(®ulators[id], &config);
770 if (IS_ERR(rdev[i])) {
771 ret = PTR_ERR(rdev[i]);
772 dev_err(s5m8767->dev, "regulator init failed for %d\n",
781 for (i = 0; i < s5m8767->num_regulators; i++)
783 regulator_unregister(rdev[i]);
788 static int s5m8767_pmic_remove(struct platform_device *pdev)
790 struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
791 struct regulator_dev **rdev = s5m8767->rdev;
794 for (i = 0; i < s5m8767->num_regulators; i++)
796 regulator_unregister(rdev[i]);
801 static const struct platform_device_id s5m8767_pmic_id[] = {
802 { "s5m8767-pmic", 0},
805 MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
807 static struct platform_driver s5m8767_pmic_driver = {
809 .name = "s5m8767-pmic",
810 .owner = THIS_MODULE,
812 .probe = s5m8767_pmic_probe,
813 .remove = s5m8767_pmic_remove,
814 .id_table = s5m8767_pmic_id,
817 static int __init s5m8767_pmic_init(void)
819 return platform_driver_register(&s5m8767_pmic_driver);
821 subsys_initcall(s5m8767_pmic_init);
823 static void __exit s5m8767_pmic_exit(void)
825 platform_driver_unregister(&s5m8767_pmic_driver);
827 module_exit(s5m8767_pmic_exit);
829 /* Module information */
830 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
831 MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
832 MODULE_LICENSE("GPL");