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regulator: tps6586x: fix typo in debug message
[deliverable/linux.git] / drivers / regulator / s5m8767.c
CommitLineData
9767ec7f
SK		 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/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>
25
26struct s5m8767_info {
27 struct device *dev;
28 struct s5m87xx_dev *iodev;
29 int num_regulators;
30 struct regulator_dev **rdev;
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_gpioindex;
45};
46
47struct s5m_voltage_desc {
48 int max;
49 int min;
50 int step;
51};
52
53static const struct s5m_voltage_desc buck_voltage_val1 = {
54 .max = 2225000,
55 .min = 650000,
56 .step = 6250,
57};
58
59static const struct s5m_voltage_desc buck_voltage_val2 = {
60 .max = 1600000,
61 .min = 600000,
62 .step = 6250,
63};
64
65static const struct s5m_voltage_desc buck_voltage_val3 = {
66 .max = 3000000,
67 .min = 750000,
68 .step = 12500,
69};
70
71static const struct s5m_voltage_desc ldo_voltage_val1 = {
72 .max = 3950000,
73 .min = 800000,
74 .step = 50000,
75};
76
77static const struct s5m_voltage_desc ldo_voltage_val2 = {
78 .max = 2375000,
79 .min = 800000,
80 .step = 25000,
81};
82
83static 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,
121};
122
9767ec7f
SK		 123static int s5m8767_list_voltage(struct regulator_dev *rdev,
124 unsigned int selector)
125{
126 const struct s5m_voltage_desc *desc;
20a14b84 127 int reg_id = rdev_get_id(rdev);
9767ec7f
SK		 128 int val;
129
130 if (reg_id >= ARRAY_SIZE(reg_voltage_map) || reg_id < 0)
131 return -EINVAL;
132
133 desc = reg_voltage_map[reg_id];
134 if (desc == NULL)
135 return -EINVAL;
136
137 val = desc->min + desc->step * selector;
138 if (val > desc->max)
139 return -EINVAL;
140
141 return val;
142}
143
144static int s5m8767_get_register(struct regulator_dev *rdev, int *reg)
145{
20a14b84 146 int reg_id = rdev_get_id(rdev);
9767ec7f
SK		 147
148 switch (reg_id) {
149 case S5M8767_LDO1 ... S5M8767_LDO2:
150 *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
151 break;
152 case S5M8767_LDO3 ... S5M8767_LDO28:
153 *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
154 break;
155 case S5M8767_BUCK1:
156 *reg = S5M8767_REG_BUCK1CTRL1;
157 break;
158 case S5M8767_BUCK2 ... S5M8767_BUCK4:
159 *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
160 break;
161 case S5M8767_BUCK5:
162 *reg = S5M8767_REG_BUCK5CTRL1;
163 break;
164 case S5M8767_BUCK6 ... S5M8767_BUCK9:
165 *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
166 break;
167 default:
168 return -EINVAL;
169 }
170
171 return 0;
172}
173
174static int s5m8767_reg_is_enabled(struct regulator_dev *rdev)
175{
176 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
177 int ret, reg;
178 int mask = 0xc0, pattern = 0xc0;
179 u8 val;
180
181 ret = s5m8767_get_register(rdev, &reg);
182 if (ret == -EINVAL)
183 return 1;
184 else if (ret)
185 return ret;
186
187 ret = s5m_reg_read(s5m8767->iodev, reg, &val);
188 if (ret)
189 return ret;
190
191 return (val & mask) == pattern;
192}
193
194static int s5m8767_reg_enable(struct regulator_dev *rdev)
195{
196 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
197 int ret, reg;
198 int mask = 0xc0, pattern = 0xc0;
199
200 ret = s5m8767_get_register(rdev, &reg);
201 if (ret)
202 return ret;
203
204 return s5m_reg_update(s5m8767->iodev, reg, pattern, mask);
205}
206
207static int s5m8767_reg_disable(struct regulator_dev *rdev)
208{
209 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
210 int ret, reg;
211 int mask = 0xc0, pattern = 0xc0;
212
213 ret = s5m8767_get_register(rdev, &reg);
214 if (ret)
215 return ret;
216
217 return s5m_reg_update(s5m8767->iodev, reg, ~pattern, mask);
218}
219
220static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
221{
20a14b84 222 int reg_id = rdev_get_id(rdev);
9767ec7f
SK		 223 int reg;
224
225 switch (reg_id) {
226 case S5M8767_LDO1 ... S5M8767_LDO2:
227 reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
228 break;
229 case S5M8767_LDO3 ... S5M8767_LDO28:
230 reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
231 break;
232 case S5M8767_BUCK1:
233 reg = S5M8767_REG_BUCK1CTRL2;
234 break;
235 case S5M8767_BUCK2:
236 reg = S5M8767_REG_BUCK2DVS1;
237 break;
238 case S5M8767_BUCK3:
239 reg = S5M8767_REG_BUCK3DVS1;
240 break;
241 case S5M8767_BUCK4:
242 reg = S5M8767_REG_BUCK4DVS1;
243 break;
244 case S5M8767_BUCK5:
245 reg = S5M8767_REG_BUCK5CTRL2;
246 break;
247 case S5M8767_BUCK6 ... S5M8767_BUCK9:
248 reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
249 break;
250 default:
251 return -EINVAL;
252 }
253
254 *_reg = reg;
255
256 return 0;
257}
258
259static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
260{
261 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
262 int reg, mask = 0xff, ret;
20a14b84 263 int reg_id = rdev_get_id(rdev);
9767ec7f
SK		 264 u8 val;
265
266 ret = s5m8767_get_voltage_register(rdev, &reg);
267 if (ret)
268 return ret;
269
270 switch (reg_id) {
271 case S5M8767_LDO1 ... S5M8767_LDO28:
272 mask = 0x3f;
273 break;
274 case S5M8767_BUCK2:
275 if (s5m8767->buck2_gpiodvs)
276 reg += s5m8767->buck_gpioindex;
277 break;
278 case S5M8767_BUCK3:
279 if (s5m8767->buck3_gpiodvs)
280 reg += s5m8767->buck_gpioindex;
281 break;
282 case S5M8767_BUCK4:
283 if (s5m8767->buck4_gpiodvs)
284 reg += s5m8767->buck_gpioindex;
285 break;
286 }
287
288 ret = s5m_reg_read(s5m8767->iodev, reg, &val);
289 if (ret)
290 return ret;
291
292 val &= mask;
293
294 return val;
295}
296
297static inline int s5m8767_convert_voltage(
298 const struct s5m_voltage_desc *desc,
299 int min_vol, int max_vol)
300{
301 int out_vol = 0;
302
303 if (desc == NULL)
304 return -EINVAL;
305
306 if (max_vol < desc->min || min_vol > desc->max)
307 return -EINVAL;
308
309 out_vol = (min_vol - desc->min) / desc->step;
310
311 if (desc->min + desc->step * out_vol > max_vol)
312 return -EINVAL;
313
314 return out_vol;
315}
316
317static int s5m8767_set_voltage(struct regulator_dev *rdev,
318 int min_uV, int max_uV, unsigned *selector)
319{
320 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
321 int min_vol = min_uV, max_vol = max_uV;
322 const struct s5m_voltage_desc *desc;
20a14b84 323 int reg_id = rdev_get_id(rdev);
9767ec7f
SK		 324 int reg, mask, ret;
325 int i;
326 u8 val;
327
328 switch (reg_id) {
329 case S5M8767_LDO1 ... S5M8767_LDO28:
330 mask = 0x3f;
331 break;
332 case S5M8767_BUCK1 ... S5M8767_BUCK6:
333 mask = 0xff;
334 break;
335 case S5M8767_BUCK7 ... S5M8767_BUCK8:
336 return -EINVAL;
337 case S5M8767_BUCK9:
338 mask = 0xff;
339 break;
340 default:
341 return -EINVAL;
342 }
343
344 desc = reg_voltage_map[reg_id];
345
346 i = s5m8767_convert_voltage(desc, min_vol, max_vol);
347 if (i < 0)
348 return i;
349
350 ret = s5m8767_get_voltage_register(rdev, &reg);
351 if (ret)
352 return ret;
353
354 s5m_reg_read(s5m8767->iodev, reg, &val);
355 val = val & mask;
356
357 ret = s5m_reg_write(s5m8767->iodev, reg, val);
358 *selector = i;
359
360 return ret;
361}
362
363static inline void s5m8767_set_high(struct s5m8767_info *s5m8767)
364{
365 int temp_index = s5m8767->buck_gpioindex;
366
367 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
368 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
369 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
370}
371
372static inline void s5m8767_set_low(struct s5m8767_info *s5m8767)
373{
374 int temp_index = s5m8767->buck_gpioindex;
375
376 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
377 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
378 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
379}
380
381static int s5m8767_set_voltage_buck(struct regulator_dev *rdev,
382 int min_uV, int max_uV, unsigned *selector)
383{
384 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
20a14b84 385 int reg_id = rdev_get_id(rdev);
9767ec7f
SK		 386 const struct s5m_voltage_desc *desc;
387 int new_val, old_val, i = 0;
388 int min_vol = min_uV, max_vol = max_uV;
389
390 if (reg_id < S5M8767_BUCK1 || reg_id > S5M8767_BUCK6)
391 return -EINVAL;
392
393 switch (reg_id) {
394 case S5M8767_BUCK1:
395 return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
396 case S5M8767_BUCK2 ... S5M8767_BUCK4:
397 break;
398 case S5M8767_BUCK5 ... S5M8767_BUCK6:
399 return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
400 case S5M8767_BUCK9:
401 return s5m8767_set_voltage(rdev, min_uV, max_uV, selector);
402 }
403
404 desc = reg_voltage_map[reg_id];
405 new_val = s5m8767_convert_voltage(desc, min_vol, max_vol);
406 if (new_val < 0)
407 return new_val;
408
409 switch (reg_id) {
410 case S5M8767_BUCK2:
411 if (s5m8767->buck2_gpiodvs) {
412 while (s5m8767->buck2_vol[i] != new_val)
413 i++;
414 } else
415 return s5m8767_set_voltage(rdev, min_uV,
416 max_uV, selector);
417 break;
418 case S5M8767_BUCK3:
419 if (s5m8767->buck3_gpiodvs) {
420 while (s5m8767->buck3_vol[i] != new_val)
421 i++;
422 } else
423 return s5m8767_set_voltage(rdev, min_uV,
424 max_uV, selector);
425 break;
426 case S5M8767_BUCK4:
427 if (s5m8767->buck3_gpiodvs) {
428 while (s5m8767->buck4_vol[i] != new_val)
429 i++;
430 } else
431 return s5m8767_set_voltage(rdev, min_uV,
432 max_uV, selector);
433 break;
434 }
435
436 old_val = s5m8767->buck_gpioindex;
437 s5m8767->buck_gpioindex = i;
438
439 if (i > old_val)
440 s5m8767_set_high(s5m8767);
441 else
442 s5m8767_set_low(s5m8767);
443
444 *selector = new_val;
445 return 0;
446}
447
448static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
449 unsigned int old_sel,
450 unsigned int new_sel)
451{
452 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
453 const struct s5m_voltage_desc *desc;
20a14b84 454 int reg_id = rdev_get_id(rdev);
9767ec7f 455
9767ec7f
SK		 456 desc = reg_voltage_map[reg_id];
457
9767ec7f 458 if (old_sel < new_sel)
89e0f0e4 459 return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
9767ec7f 460 s5m8767->ramp_delay);
89e0f0e4 461 return 0;
9767ec7f
SK		 462}
463
464static struct regulator_ops s5m8767_ldo_ops = {
465 .list_voltage = s5m8767_list_voltage,
466 .is_enabled = s5m8767_reg_is_enabled,
467 .enable = s5m8767_reg_enable,
468 .disable = s5m8767_reg_disable,
469 .get_voltage_sel = s5m8767_get_voltage_sel,
470 .set_voltage = s5m8767_set_voltage,
471 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
472};
473
474static struct regulator_ops s5m8767_buck_ops = {
475 .list_voltage = s5m8767_list_voltage,
476 .is_enabled = s5m8767_reg_is_enabled,
477 .enable = s5m8767_reg_enable,
478 .disable = s5m8767_reg_disable,
479 .get_voltage_sel = s5m8767_get_voltage_sel,
480 .set_voltage = s5m8767_set_voltage_buck,
481 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
482};
483
484#define regulator_desc_ldo(num) { \
485 .name = "LDO"#num, \
486 .id = S5M8767_LDO##num, \
487 .ops = &s5m8767_ldo_ops, \
488 .type = REGULATOR_VOLTAGE, \
489 .owner = THIS_MODULE, \
490}
491#define regulator_desc_buck(num) { \
492 .name = "BUCK"#num, \
493 .id = S5M8767_BUCK##num, \
494 .ops = &s5m8767_buck_ops, \
495 .type = REGULATOR_VOLTAGE, \
496 .owner = THIS_MODULE, \
497}
498
499static struct regulator_desc regulators[] = {
500 regulator_desc_ldo(1),
501 regulator_desc_ldo(2),
502 regulator_desc_ldo(3),
503 regulator_desc_ldo(4),
504 regulator_desc_ldo(5),
505 regulator_desc_ldo(6),
506 regulator_desc_ldo(7),
507 regulator_desc_ldo(8),
508 regulator_desc_ldo(9),
509 regulator_desc_ldo(10),
510 regulator_desc_ldo(11),
511 regulator_desc_ldo(12),
512 regulator_desc_ldo(13),
513 regulator_desc_ldo(14),
514 regulator_desc_ldo(15),
515 regulator_desc_ldo(16),
516 regulator_desc_ldo(17),
517 regulator_desc_ldo(18),
518 regulator_desc_ldo(19),
519 regulator_desc_ldo(20),
520 regulator_desc_ldo(21),
521 regulator_desc_ldo(22),
522 regulator_desc_ldo(23),
523 regulator_desc_ldo(24),
524 regulator_desc_ldo(25),
525 regulator_desc_ldo(26),
526 regulator_desc_ldo(27),
527 regulator_desc_ldo(28),
528 regulator_desc_buck(1),
529 regulator_desc_buck(2),
530 regulator_desc_buck(3),
531 regulator_desc_buck(4),
532 regulator_desc_buck(5),
533 regulator_desc_buck(6),
534 regulator_desc_buck(7),
535 regulator_desc_buck(8),
536 regulator_desc_buck(9),
537};
538
539static __devinit int s5m8767_pmic_probe(struct platform_device *pdev)
540{
541 struct s5m87xx_dev *iodev = dev_get_drvdata(pdev->dev.parent);
542 struct s5m_platform_data *pdata = dev_get_platdata(iodev->dev);
543 struct regulator_dev **rdev;
544 struct s5m8767_info *s5m8767;
22cd2fef 545 int i, ret, size;
9767ec7f
SK		 546
547 if (!pdata) {
548 dev_err(pdev->dev.parent, "Platform data not supplied\n");
549 return -ENODEV;
550 }
551
552 s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
553 GFP_KERNEL);
554 if (!s5m8767)
555 return -ENOMEM;
556
557 size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
558 s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
559 if (!s5m8767->rdev)
560 return -ENOMEM;
561
562 rdev = s5m8767->rdev;
563 s5m8767->dev = &pdev->dev;
564 s5m8767->iodev = iodev;
565 s5m8767->num_regulators = S5M8767_REG_MAX - 2;
566 platform_set_drvdata(pdev, s5m8767);
9767ec7f
SK		 567
568 s5m8767->buck_gpioindex = pdata->buck_default_idx;
569 s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
570 s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
571 s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
572 s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
573 s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
574 s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
575 s5m8767->ramp_delay = pdata->buck_ramp_delay;
576 s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
577 s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
578 s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
579
580 for (i = 0; i < 8; i++) {
581 if (s5m8767->buck2_gpiodvs) {
582 s5m8767->buck2_vol[i] =
583 s5m8767_convert_voltage(
584 &buck_voltage_val2,
585 pdata->buck2_voltage[i],
586 pdata->buck2_voltage[i] +
587 buck_voltage_val2.step);
588 }
589
590 if (s5m8767->buck3_gpiodvs) {
591 s5m8767->buck3_vol[i] =
592 s5m8767_convert_voltage(
593 &buck_voltage_val2,
594 pdata->buck3_voltage[i],
595 pdata->buck3_voltage[i] +
596 buck_voltage_val2.step);
597 }
598
599 if (s5m8767->buck4_gpiodvs) {
600 s5m8767->buck4_vol[i] =
601 s5m8767_convert_voltage(
602 &buck_voltage_val2,
603 pdata->buck4_voltage[i],
604 pdata->buck4_voltage[i] +
605 buck_voltage_val2.step);
606 }
607 }
608
609 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
610 pdata->buck4_gpiodvs) {
611 if (gpio_is_valid(pdata->buck_gpios[0]) &&
612 gpio_is_valid(pdata->buck_gpios[1]) &&
613 gpio_is_valid(pdata->buck_gpios[2])) {
614 ret = gpio_request(pdata->buck_gpios[0],
615 "S5M8767 SET1");
616 if (ret == -EBUSY)
617 dev_warn(&pdev->dev, "Duplicated gpio request for SET1\n");
618
619 ret = gpio_request(pdata->buck_gpios[1],
620 "S5M8767 SET2");
621 if (ret == -EBUSY)
622 dev_warn(&pdev->dev, "Duplicated gpio request for SET2\n");
623
624 ret = gpio_request(pdata->buck_gpios[2],
625 "S5M8767 SET3");
626 if (ret == -EBUSY)
627 dev_warn(&pdev->dev, "Duplicated gpio request for SET3\n");
628 /* SET1 GPIO */
629 gpio_direction_output(pdata->buck_gpios[0],
630 (s5m8767->buck_gpioindex >> 2) & 0x1);
631 /* SET2 GPIO */
632 gpio_direction_output(pdata->buck_gpios[1],
633 (s5m8767->buck_gpioindex >> 1) & 0x1);
634 /* SET3 GPIO */
635 gpio_direction_output(pdata->buck_gpios[2],
636 (s5m8767->buck_gpioindex >> 0) & 0x1);
637 ret = 0;
638 } else {
639 dev_err(&pdev->dev, "GPIO NOT VALID\n");
640 ret = -EINVAL;
641 return ret;
642 }
643 }
644
645 if (pdata->buck2_gpiodvs) {
646 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
647 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
648 ret = -EINVAL;
649 return ret;
650 }
651 }
652
653 if (pdata->buck3_gpiodvs) {
654 if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
655 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
656 ret = -EINVAL;
657 return ret;
658 }
659 }
660
661 if (pdata->buck4_gpiodvs) {
662 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
663 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
664 ret = -EINVAL;
665 return ret;
666 }
667 }
668
669 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL,
670 (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
671 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL,
672 (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
673 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL,
674 (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1), 1 << 1);
675
676 /* Initialize GPIO DVS registers */
677 for (i = 0; i < 8; i++) {
678 if (s5m8767->buck2_gpiodvs) {
679 s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS1 + i,
680 s5m8767->buck2_vol[i]);
681 }
682
683 if (s5m8767->buck3_gpiodvs) {
684 s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS1 + i,
685 s5m8767->buck3_vol[i]);
686 }
687
688 if (s5m8767->buck4_gpiodvs) {
689 s5m_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS1 + i,
690 s5m8767->buck4_vol[i]);
691 }
692 }
693 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK2CTRL, 0x78, 0xff);
694 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK3CTRL, 0x58, 0xff);
695 s5m_reg_update(s5m8767->iodev, S5M8767_REG_BUCK4CTRL, 0x78, 0xff);
696
697 if (s5m8767->buck2_ramp)
698 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x08, 0x08);
699
700 if (s5m8767->buck3_ramp)
701 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x04, 0x04);
702
703 if (s5m8767->buck4_ramp)
704 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP, 0x02, 0x02);
705
706 if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
707 || s5m8767->buck4_ramp) {
708 switch (s5m8767->ramp_delay) {
709 case 15:
710 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
711 0xc0, 0xf0);
047ec220 712 break;
9767ec7f
SK		 713 case 25:
714 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
715 0xd0, 0xf0);
047ec220 716 break;
9767ec7f
SK		 717 case 50:
718 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
719 0xe0, 0xf0);
047ec220 720 break;
9767ec7f
SK		 721 case 100:
722 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
723 0xf0, 0xf0);
047ec220 724 break;
9767ec7f
SK		 725 default:
726 s5m_reg_update(s5m8767->iodev, S5M8767_REG_DVSRAMP,
727 0x90, 0xf0);
728 }
729 }
730
731 for (i = 0; i < pdata->num_regulators; i++) {
732 const struct s5m_voltage_desc *desc;
733 int id = pdata->regulators[i].id;
734
735 desc = reg_voltage_map[id];
736 if (desc)
737 regulators[id].n_voltages =
738 (desc->max - desc->min) / desc->step + 1;
739
740 rdev[i] = regulator_register(&regulators[id], s5m8767->dev,
0ce69873 741 pdata->regulators[i].initdata, s5m8767, NULL);
9767ec7f
SK		 742 if (IS_ERR(rdev[i])) {
743 ret = PTR_ERR(rdev[i]);
744 dev_err(s5m8767->dev, "regulator init failed for %d\n",
745 id);
746 rdev[i] = NULL;
747 goto err;
748 }
749 }
750
751 return 0;
752err:
753 for (i = 0; i < s5m8767->num_regulators; i++)
754 if (rdev[i])
755 regulator_unregister(rdev[i]);
756
757 return ret;
758}
759
760static int __devexit s5m8767_pmic_remove(struct platform_device *pdev)
761{
762 struct s5m8767_info *s5m8767 = platform_get_drvdata(pdev);
763 struct regulator_dev **rdev = s5m8767->rdev;
764 int i;
765
766 for (i = 0; i < s5m8767->num_regulators; i++)
767 if (rdev[i])
768 regulator_unregister(rdev[i]);
769
770 return 0;
771}
772
773static const struct platform_device_id s5m8767_pmic_id[] = {
774 { "s5m8767-pmic", 0},
775 { },
776};
777MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
778
779static struct platform_driver s5m8767_pmic_driver = {
780 .driver = {
781 .name = "s5m8767-pmic",
782 .owner = THIS_MODULE,
783 },
784 .probe = s5m8767_pmic_probe,
785 .remove = __devexit_p(s5m8767_pmic_remove),
786 .id_table = s5m8767_pmic_id,
787};
788
789static int __init s5m8767_pmic_init(void)
790{
791 return platform_driver_register(&s5m8767_pmic_driver);
792}
793subsys_initcall(s5m8767_pmic_init);
794
795static void __exit s5m8767_pmic_exit(void)
796{
797 platform_driver_unregister(&s5m8767_pmic_driver);
798}
799module_exit(s5m8767_pmic_exit);
800
801/* Module information */
802MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
803MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
804MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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