regulator: remove use of __devexit_p
[linux-3.10.git] / drivers / regulator / s5m8767.c
1 /*
2  * s5m8767.c
3  *
4  * Copyright (c) 2011 Samsung Electronics Co., Ltd
5  *              http://www.samsung.com
6  *
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.
11  *
12  */
13
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>
24
25 struct s5m8767_info {
26         struct device *dev;
27         struct sec_pmic_dev *iodev;
28         int num_regulators;
29         struct regulator_dev **rdev;
30         struct sec_opmode_data *opmode;
31
32         int ramp_delay;
33         bool buck2_ramp;
34         bool buck3_ramp;
35         bool buck4_ramp;
36
37         bool buck2_gpiodvs;
38         bool buck3_gpiodvs;
39         bool buck4_gpiodvs;
40         u8 buck2_vol[8];
41         u8 buck3_vol[8];
42         u8 buck4_vol[8];
43         int buck_gpios[3];
44         int buck_ds[3];
45         int buck_gpioindex;
46 };
47
48 struct sec_voltage_desc {
49         int max;
50         int min;
51         int step;
52 };
53
54 static const struct sec_voltage_desc buck_voltage_val1 = {
55         .max = 2225000,
56         .min =  650000,
57         .step =   6250,
58 };
59
60 static const struct sec_voltage_desc buck_voltage_val2 = {
61         .max = 1600000,
62         .min =  600000,
63         .step =   6250,
64 };
65
66 static const struct sec_voltage_desc buck_voltage_val3 = {
67         .max = 3000000,
68         .min =  750000,
69         .step =  12500,
70 };
71
72 static const struct sec_voltage_desc ldo_voltage_val1 = {
73         .max = 3950000,
74         .min =  800000,
75         .step =  50000,
76 };
77
78 static const struct sec_voltage_desc ldo_voltage_val2 = {
79         .max = 2375000,
80         .min =  800000,
81         .step =  25000,
82 };
83
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,
122 };
123
124 static unsigned int s5m8767_opmode_reg[][4] = {
125         /* {OFF, ON, LOWPOWER, SUSPEND} */
126         /* LDO1 ... LDO28 */
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 */
155
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 */
166 };
167
168 static int s5m8767_get_register(struct regulator_dev *rdev, int *reg,
169                                 int *enable_ctrl)
170 {
171         int reg_id = rdev_get_id(rdev);
172         unsigned int mode;
173         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
174
175         switch (reg_id) {
176         case S5M8767_LDO1 ... S5M8767_LDO2:
177                 *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
178                 break;
179         case S5M8767_LDO3 ... S5M8767_LDO28:
180                 *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
181                 break;
182         case S5M8767_BUCK1:
183                 *reg = S5M8767_REG_BUCK1CTRL1;
184                 break;
185         case S5M8767_BUCK2 ... S5M8767_BUCK4:
186                 *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
187                 break;
188         case S5M8767_BUCK5:
189                 *reg = S5M8767_REG_BUCK5CTRL1;
190                 break;
191         case S5M8767_BUCK6 ... S5M8767_BUCK9:
192                 *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
193                 break;
194         default:
195                 return -EINVAL;
196         }
197
198         mode = s5m8767->opmode[reg_id].mode;
199         *enable_ctrl = s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
200         return 0;
201 }
202
203 static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
204 {
205         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
206         int ret, reg;
207         int mask = 0xc0, enable_ctrl;
208         u8 val;
209
210         ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
211         if (ret == -EINVAL)
212                 return 1;
213         else if (ret)
214                 return ret;
215
216         ret = sec_reg_read(s5m8767->iodev, reg, &val);
217         if (ret)
218                 return ret;
219
220         return (val & mask) == enable_ctrl;
221 }
222
223 static int s5m8767_reg_enable(struct regulator_dev *rdev)
224 {
225         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
226         int ret, reg;
227         int mask = 0xc0, enable_ctrl;
228
229         ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
230         if (ret)
231                 return ret;
232
233         return sec_reg_update(s5m8767->iodev, reg, enable_ctrl, mask);
234 }
235
236 static int s5m8767_reg_disable(struct regulator_dev *rdev)
237 {
238         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
239         int ret, reg;
240         int  mask = 0xc0, enable_ctrl;
241
242         ret = s5m8767_get_register(rdev, &reg, &enable_ctrl);
243         if (ret)
244                 return ret;
245
246         return sec_reg_update(s5m8767->iodev, reg, ~mask, mask);
247 }
248
249 static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
250 {
251         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
252         int reg_id = rdev_get_id(rdev);
253         int reg;
254
255         switch (reg_id) {
256         case S5M8767_LDO1 ... S5M8767_LDO2:
257                 reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
258                 break;
259         case S5M8767_LDO3 ... S5M8767_LDO28:
260                 reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
261                 break;
262         case S5M8767_BUCK1:
263                 reg = S5M8767_REG_BUCK1CTRL2;
264                 break;
265         case S5M8767_BUCK2:
266                 reg = S5M8767_REG_BUCK2DVS2;
267                 if (s5m8767->buck2_gpiodvs)
268                         reg += s5m8767->buck_gpioindex;
269                 break;
270         case S5M8767_BUCK3:
271                 reg = S5M8767_REG_BUCK3DVS2;
272                 if (s5m8767->buck3_gpiodvs)
273                         reg += s5m8767->buck_gpioindex;
274                 break;
275         case S5M8767_BUCK4:
276                 reg = S5M8767_REG_BUCK4DVS2;
277                 if (s5m8767->buck4_gpiodvs)
278                         reg += s5m8767->buck_gpioindex;
279                 break;
280         case S5M8767_BUCK5:
281                 reg = S5M8767_REG_BUCK5CTRL2;
282                 break;
283         case S5M8767_BUCK6 ... S5M8767_BUCK9:
284                 reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
285                 break;
286         default:
287                 return -EINVAL;
288         }
289
290         *_reg = reg;
291
292         return 0;
293 }
294
295 static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
296 {
297         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
298         int reg, mask, ret;
299         int reg_id = rdev_get_id(rdev);
300         u8 val;
301
302         ret = s5m8767_get_voltage_register(rdev, &reg);
303         if (ret)
304                 return ret;
305
306         mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff;
307
308         ret = sec_reg_read(s5m8767->iodev, reg, &val);
309         if (ret)
310                 return ret;
311
312         val &= mask;
313
314         return val;
315 }
316
317 static int s5m8767_convert_voltage_to_sel(
318                 const struct sec_voltage_desc *desc,
319                 int min_vol, int max_vol)
320 {
321         int selector = 0;
322
323         if (desc == NULL)
324                 return -EINVAL;
325
326         if (max_vol < desc->min || min_vol > desc->max)
327                 return -EINVAL;
328
329         if (min_vol < desc->min)
330                 min_vol = desc->min;
331
332         selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
333
334         if (desc->min + desc->step * selector > max_vol)
335                 return -EINVAL;
336
337         return selector;
338 }
339
340 static inline int s5m8767_set_high(struct s5m8767_info *s5m8767)
341 {
342         int temp_index = s5m8767->buck_gpioindex;
343
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);
347
348         return 0;
349 }
350
351 static inline int s5m8767_set_low(struct s5m8767_info *s5m8767)
352 {
353         int temp_index = s5m8767->buck_gpioindex;
354
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);
358
359         return 0;
360 }
361
362 static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
363                                    unsigned selector)
364 {
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;
369
370         switch (reg_id) {
371         case S5M8767_LDO1 ... S5M8767_LDO28:
372                 mask = 0x3f;
373                 break;
374         case S5M8767_BUCK1 ... S5M8767_BUCK6:
375                 mask = 0xff;
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];
382                 break;
383         case S5M8767_BUCK7 ... S5M8767_BUCK8:
384                 return -EINVAL;
385         case S5M8767_BUCK9:
386                 mask = 0xff;
387                 break;
388         default:
389                 return -EINVAL;
390         }
391
392         /* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */
393         if (buck234_vol) {
394                 while (*buck234_vol != selector) {
395                         buck234_vol++;
396                         index++;
397                 }
398                 old_index = s5m8767->buck_gpioindex;
399                 s5m8767->buck_gpioindex = index;
400
401                 if (index > old_index)
402                         return s5m8767_set_high(s5m8767);
403                 else
404                         return s5m8767_set_low(s5m8767);
405         } else {
406                 ret = s5m8767_get_voltage_register(rdev, &reg);
407                 if (ret)
408                         return ret;
409
410                 return sec_reg_update(s5m8767->iodev, reg, selector, mask);
411         }
412 }
413
414 static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
415                                              unsigned int old_sel,
416                                              unsigned int new_sel)
417 {
418         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
419         const struct sec_voltage_desc *desc;
420         int reg_id = rdev_get_id(rdev);
421
422         desc = reg_voltage_map[reg_id];
423
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);
427         return 0;
428 }
429
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,
438 };
439
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,
444 };
445
446 #define s5m8767_regulator_desc(_name) {         \
447         .name           = #_name,               \
448         .id             = S5M8767_##_name,      \
449         .ops            = &s5m8767_ops,         \
450         .type           = REGULATOR_VOLTAGE,    \
451         .owner          = THIS_MODULE,          \
452 }
453
454 #define s5m8767_regulator_buck78_desc(_name) {  \
455         .name           = #_name,               \
456         .id             = S5M8767_##_name,      \
457         .ops            = &s5m8767_buck78_ops,  \
458         .type           = REGULATOR_VOLTAGE,    \
459         .owner          = THIS_MODULE,          \
460 }
461
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),
500 };
501
502 static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
503 {
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;
510
511         if (!pdata) {
512                 dev_err(pdev->dev.parent, "Platform data not supplied\n");
513                 return -ENODEV;
514         }
515
516         if (pdata->buck2_gpiodvs) {
517                 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
518                         dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
519                         return -EINVAL;
520                 }
521         }
522
523         if (pdata->buck3_gpiodvs) {
524                 if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
525                         dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
526                         return -EINVAL;
527                 }
528         }
529
530         if (pdata->buck4_gpiodvs) {
531                 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
532                         dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
533                         return -EINVAL;
534                 }
535         }
536
537         s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
538                                 GFP_KERNEL);
539         if (!s5m8767)
540                 return -ENOMEM;
541
542         size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
543         s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
544         if (!s5m8767->rdev)
545                 return -ENOMEM;
546
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);
552
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];
563
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;
569
570         buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
571                                                 pdata->buck2_init,
572                                                 pdata->buck2_init +
573                                                 buck_voltage_val2.step);
574
575         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS2, buck_init);
576
577         buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
578                                                 pdata->buck3_init,
579                                                 pdata->buck3_init +
580                                                 buck_voltage_val2.step);
581
582         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS2, buck_init);
583
584         buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
585                                                 pdata->buck4_init,
586                                                 pdata->buck4_init +
587                                                 buck_voltage_val2.step);
588
589         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS2, buck_init);
590
591         for (i = 0; i < 8; i++) {
592                 if (s5m8767->buck2_gpiodvs) {
593                         s5m8767->buck2_vol[i] =
594                                 s5m8767_convert_voltage_to_sel(
595                                                 &buck_voltage_val2,
596                                                 pdata->buck2_voltage[i],
597                                                 pdata->buck2_voltage[i] +
598                                                 buck_voltage_val2.step);
599                 }
600
601                 if (s5m8767->buck3_gpiodvs) {
602                         s5m8767->buck3_vol[i] =
603                                 s5m8767_convert_voltage_to_sel(
604                                                 &buck_voltage_val2,
605                                                 pdata->buck3_voltage[i],
606                                                 pdata->buck3_voltage[i] +
607                                                 buck_voltage_val2.step);
608                 }
609
610                 if (s5m8767->buck4_gpiodvs) {
611                         s5m8767->buck4_vol[i] =
612                                 s5m8767_convert_voltage_to_sel(
613                                                 &buck_voltage_val2,
614                                                 pdata->buck4_voltage[i],
615                                                 pdata->buck4_voltage[i] +
616                                                 buck_voltage_val2.step);
617                 }
618         }
619
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],
624                                         "S5M8767 SET1");
625                 if (ret)
626                         return ret;
627
628                 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1],
629                                         "S5M8767 SET2");
630                 if (ret)
631                         return ret;
632
633                 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2],
634                                         "S5M8767 SET3");
635                 if (ret)
636                         return ret;
637
638                 /* SET1 GPIO */
639                 gpio_direction_output(pdata->buck_gpios[0],
640                                 (s5m8767->buck_gpioindex >> 2) & 0x1);
641                 /* SET2 GPIO */
642                 gpio_direction_output(pdata->buck_gpios[1],
643                                 (s5m8767->buck_gpioindex >> 1) & 0x1);
644                 /* SET3 GPIO */
645                 gpio_direction_output(pdata->buck_gpios[2],
646                                 (s5m8767->buck_gpioindex >> 0) & 0x1);
647         } else {
648                 dev_err(&pdev->dev, "GPIO NOT VALID\n");
649                 ret = -EINVAL;
650                 return ret;
651         }
652
653         ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2");
654         if (ret)
655                 return ret;
656
657         ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3");
658         if (ret)
659                 return ret;
660
661         ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4");
662         if (ret)
663                 return ret;
664
665         /* DS2 GPIO */
666         gpio_direction_output(pdata->buck_ds[0], 0x0);
667         /* DS3 GPIO */
668         gpio_direction_output(pdata->buck_ds[1], 0x0);
669         /* DS4 GPIO */
670         gpio_direction_output(pdata->buck_ds[2], 0x0);
671
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),
676                                 1 << 1);
677                 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
678                                 (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1),
679                                 1 << 1);
680                 sec_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
681                                 (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1),
682                                 1 << 1);
683         }
684
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]);
690                 }
691
692                 if (s5m8767->buck3_gpiodvs) {
693                         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
694                                            s5m8767->buck3_vol[i]);
695                 }
696
697                 if (s5m8767->buck4_gpiodvs) {
698                         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
699                                            s5m8767->buck4_vol[i]);
700                 }
701         }
702
703         if (s5m8767->buck2_ramp)
704                 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
705
706         if (s5m8767->buck3_ramp)
707                 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
708
709         if (s5m8767->buck4_ramp)
710                 sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
711
712         if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
713                 || s5m8767->buck4_ramp) {
714                 switch (s5m8767->ramp_delay) {
715                 case 5:
716                         sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
717                                         0x40, 0xf0);
718                         break;
719                 case 10:
720                         sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
721                                         0x90, 0xf0);
722                         break;
723                 case 25:
724                         sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
725                                         0xd0, 0xf0);
726                         break;
727                 case 50:
728                         sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
729                                         0xe0, 0xf0);
730                         break;
731                 case 100:
732                         sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
733                                         0xf0, 0xf0);
734                         break;
735                 default:
736                         sec_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
737                                         0x90, 0xf0);
738                 }
739         }
740
741         for (i = 0; i < pdata->num_regulators; i++) {
742                 const struct sec_voltage_desc *desc;
743                 int id = pdata->regulators[i].id;
744
745                 desc = reg_voltage_map[id];
746                 if (desc) {
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;
751                 }
752
753                 config.dev = s5m8767->dev;
754                 config.init_data = pdata->regulators[i].initdata;
755                 config.driver_data = s5m8767;
756
757                 rdev[i] = regulator_register(&regulators[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",
761                                         id);
762                         rdev[i] = NULL;
763                         goto err;
764                 }
765         }
766
767         return 0;
768 err:
769         for (i = 0; i < s5m8767->num_regulators; i++)
770                 if (rdev[i])
771                         regulator_unregister(rdev[i]);
772
773         return ret;
774 }
775
776 static int __devexit s5m8767_pmic_remove(struct platform_device *pdev)
777 {
778         struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
779         struct regulator_dev **rdev = s5m8767->rdev;
780         int i;
781
782         for (i = 0; i < s5m8767->num_regulators; i++)
783                 if (rdev[i])
784                         regulator_unregister(rdev[i]);
785
786         return 0;
787 }
788
789 static const struct platform_device_id s5m8767_pmic_id[] = {
790         { "s5m8767-pmic", 0},
791         { },
792 };
793 MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
794
795 static struct platform_driver s5m8767_pmic_driver = {
796         .driver = {
797                 .name = "s5m8767-pmic",
798                 .owner = THIS_MODULE,
799         },
800         .probe = s5m8767_pmic_probe,
801         .remove = s5m8767_pmic_remove,
802         .id_table = s5m8767_pmic_id,
803 };
804
805 static int __init s5m8767_pmic_init(void)
806 {
807         return platform_driver_register(&s5m8767_pmic_driver);
808 }
809 subsys_initcall(s5m8767_pmic_init);
810
811 static void __exit s5m8767_pmic_exit(void)
812 {
813         platform_driver_unregister(&s5m8767_pmic_driver);
814 }
815 module_exit(s5m8767_pmic_exit);
816
817 /* Module information */
818 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
819 MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
820 MODULE_LICENSE("GPL");