projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
video: bf54x-lq043fb: fix build error
[deliverable/linux.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/err.h>
15 #include <linux/of_gpio.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regulator/machine.h>
20 #include <linux/mfd/samsung/core.h>
21 #include <linux/mfd/samsung/s5m8767.h>
22 #include <linux/regulator/of_regulator.h>
23 #include <linux/regmap.h>
24
25 #define S5M8767_OPMODE_NORMAL_MODE 0x1
26
27 struct s5m8767_info {
28 struct device *dev;
29 struct sec_pmic_dev *iodev;
30 int num_regulators;
31 struct regulator_dev **rdev;
32 struct sec_opmode_data *opmode;
33
34 int ramp_delay;
35 bool buck2_ramp;
36 bool buck3_ramp;
37 bool buck4_ramp;
38
39 bool buck2_gpiodvs;
40 bool buck3_gpiodvs;
41 bool buck4_gpiodvs;
42 u8 buck2_vol[8];
43 u8 buck3_vol[8];
44 u8 buck4_vol[8];
45 int buck_gpios[3];
46 int buck_ds[3];
47 int buck_gpioindex;
48 };
49
50 struct sec_voltage_desc {
51 int max;
52 int min;
53 int step;
54 };
55
56 static const struct sec_voltage_desc buck_voltage_val1 = {
57 .max = 2225000,
58 .min = 650000,
59 .step = 6250,
60 };
61
62 static const struct sec_voltage_desc buck_voltage_val2 = {
63 .max = 1600000,
64 .min = 600000,
65 .step = 6250,
66 };
67
68 static const struct sec_voltage_desc buck_voltage_val3 = {
69 .max = 3000000,
70 .min = 750000,
71 .step = 12500,
72 };
73
74 static const struct sec_voltage_desc ldo_voltage_val1 = {
75 .max = 3950000,
76 .min = 800000,
77 .step = 50000,
78 };
79
80 static const struct sec_voltage_desc ldo_voltage_val2 = {
81 .max = 2375000,
82 .min = 800000,
83 .step = 25000,
84 };
85
86 static const struct sec_voltage_desc *reg_voltage_map[] = {
87 [S5M8767_LDO1] = &ldo_voltage_val2,
88 [S5M8767_LDO2] = &ldo_voltage_val2,
89 [S5M8767_LDO3] = &ldo_voltage_val1,
90 [S5M8767_LDO4] = &ldo_voltage_val1,
91 [S5M8767_LDO5] = &ldo_voltage_val1,
92 [S5M8767_LDO6] = &ldo_voltage_val2,
93 [S5M8767_LDO7] = &ldo_voltage_val2,
94 [S5M8767_LDO8] = &ldo_voltage_val2,
95 [S5M8767_LDO9] = &ldo_voltage_val1,
96 [S5M8767_LDO10] = &ldo_voltage_val1,
97 [S5M8767_LDO11] = &ldo_voltage_val1,
98 [S5M8767_LDO12] = &ldo_voltage_val1,
99 [S5M8767_LDO13] = &ldo_voltage_val1,
100 [S5M8767_LDO14] = &ldo_voltage_val1,
101 [S5M8767_LDO15] = &ldo_voltage_val2,
102 [S5M8767_LDO16] = &ldo_voltage_val1,
103 [S5M8767_LDO17] = &ldo_voltage_val1,
104 [S5M8767_LDO18] = &ldo_voltage_val1,
105 [S5M8767_LDO19] = &ldo_voltage_val1,
106 [S5M8767_LDO20] = &ldo_voltage_val1,
107 [S5M8767_LDO21] = &ldo_voltage_val1,
108 [S5M8767_LDO22] = &ldo_voltage_val1,
109 [S5M8767_LDO23] = &ldo_voltage_val1,
110 [S5M8767_LDO24] = &ldo_voltage_val1,
111 [S5M8767_LDO25] = &ldo_voltage_val1,
112 [S5M8767_LDO26] = &ldo_voltage_val1,
113 [S5M8767_LDO27] = &ldo_voltage_val1,
114 [S5M8767_LDO28] = &ldo_voltage_val1,
115 [S5M8767_BUCK1] = &buck_voltage_val1,
116 [S5M8767_BUCK2] = &buck_voltage_val2,
117 [S5M8767_BUCK3] = &buck_voltage_val2,
118 [S5M8767_BUCK4] = &buck_voltage_val2,
119 [S5M8767_BUCK5] = &buck_voltage_val1,
120 [S5M8767_BUCK6] = &buck_voltage_val1,
121 [S5M8767_BUCK7] = &buck_voltage_val3,
122 [S5M8767_BUCK8] = &buck_voltage_val3,
123 [S5M8767_BUCK9] = &buck_voltage_val3,
124 };
125
126 static unsigned int s5m8767_opmode_reg[][4] = {
127 /* {OFF, ON, LOWPOWER, SUSPEND} */
128 /* LDO1 ... LDO28 */
129 {0x0, 0x3, 0x2, 0x1}, /* LDO1 */
130 {0x0, 0x3, 0x2, 0x1},
131 {0x0, 0x3, 0x2, 0x1},
132 {0x0, 0x0, 0x0, 0x0},
133 {0x0, 0x3, 0x2, 0x1}, /* LDO5 */
134 {0x0, 0x3, 0x2, 0x1},
135 {0x0, 0x3, 0x2, 0x1},
136 {0x0, 0x3, 0x2, 0x1},
137 {0x0, 0x3, 0x2, 0x1},
138 {0x0, 0x3, 0x2, 0x1}, /* LDO10 */
139 {0x0, 0x3, 0x2, 0x1},
140 {0x0, 0x3, 0x2, 0x1},
141 {0x0, 0x3, 0x2, 0x1},
142 {0x0, 0x3, 0x2, 0x1},
143 {0x0, 0x3, 0x2, 0x1}, /* LDO15 */
144 {0x0, 0x3, 0x2, 0x1},
145 {0x0, 0x3, 0x2, 0x1},
146 {0x0, 0x0, 0x0, 0x0},
147 {0x0, 0x3, 0x2, 0x1},
148 {0x0, 0x3, 0x2, 0x1}, /* LDO20 */
149 {0x0, 0x3, 0x2, 0x1},
150 {0x0, 0x3, 0x2, 0x1},
151 {0x0, 0x0, 0x0, 0x0},
152 {0x0, 0x3, 0x2, 0x1},
153 {0x0, 0x3, 0x2, 0x1}, /* LDO25 */
154 {0x0, 0x3, 0x2, 0x1},
155 {0x0, 0x3, 0x2, 0x1},
156 {0x0, 0x3, 0x2, 0x1}, /* LDO28 */
157
158 /* BUCK1 ... BUCK9 */
159 {0x0, 0x3, 0x1, 0x1}, /* BUCK1 */
160 {0x0, 0x3, 0x1, 0x1},
161 {0x0, 0x3, 0x1, 0x1},
162 {0x0, 0x3, 0x1, 0x1},
163 {0x0, 0x3, 0x2, 0x1}, /* BUCK5 */
164 {0x0, 0x3, 0x1, 0x1},
165 {0x0, 0x3, 0x1, 0x1},
166 {0x0, 0x3, 0x1, 0x1},
167 {0x0, 0x3, 0x1, 0x1}, /* BUCK9 */
168 };
169
170 static int s5m8767_get_register(struct s5m8767_info *s5m8767, int reg_id,
171 int *reg, int *enable_ctrl)
172 {
173 int i;
174 unsigned int mode;
175
176 switch (reg_id) {
177 case S5M8767_LDO1 ... S5M8767_LDO2:
178 *reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
179 break;
180 case S5M8767_LDO3 ... S5M8767_LDO28:
181 *reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
182 break;
183 case S5M8767_BUCK1:
184 *reg = S5M8767_REG_BUCK1CTRL1;
185 break;
186 case S5M8767_BUCK2 ... S5M8767_BUCK4:
187 *reg = S5M8767_REG_BUCK2CTRL + (reg_id - S5M8767_BUCK2) * 9;
188 break;
189 case S5M8767_BUCK5:
190 *reg = S5M8767_REG_BUCK5CTRL1;
191 break;
192 case S5M8767_BUCK6 ... S5M8767_BUCK9:
193 *reg = S5M8767_REG_BUCK6CTRL1 + (reg_id - S5M8767_BUCK6) * 2;
194 break;
195 default:
196 return -EINVAL;
197 }
198
199 for (i = 0; i < s5m8767->num_regulators; i++) {
200 if (s5m8767->opmode[i].id == reg_id) {
201 mode = s5m8767->opmode[i].mode;
202 break;
203 }
204 }
205
206 if (i < s5m8767->num_regulators)
207 *enable_ctrl =
208 s5m8767_opmode_reg[reg_id][mode] << S5M8767_ENCTRL_SHIFT;
209
210 return 0;
211 }
212
213 static int s5m8767_get_vsel_reg(int reg_id, struct s5m8767_info *s5m8767)
214 {
215 int reg;
216
217 switch (reg_id) {
218 case S5M8767_LDO1 ... S5M8767_LDO2:
219 reg = S5M8767_REG_LDO1CTRL + (reg_id - S5M8767_LDO1);
220 break;
221 case S5M8767_LDO3 ... S5M8767_LDO28:
222 reg = S5M8767_REG_LDO3CTRL + (reg_id - S5M8767_LDO3);
223 break;
224 case S5M8767_BUCK1:
225 reg = S5M8767_REG_BUCK1CTRL2;
226 break;
227 case S5M8767_BUCK2:
228 reg = S5M8767_REG_BUCK2DVS1;
229 if (s5m8767->buck2_gpiodvs)
230 reg += s5m8767->buck_gpioindex;
231 break;
232 case S5M8767_BUCK3:
233 reg = S5M8767_REG_BUCK3DVS1;
234 if (s5m8767->buck3_gpiodvs)
235 reg += s5m8767->buck_gpioindex;
236 break;
237 case S5M8767_BUCK4:
238 reg = S5M8767_REG_BUCK4DVS1;
239 if (s5m8767->buck4_gpiodvs)
240 reg += s5m8767->buck_gpioindex;
241 break;
242 case S5M8767_BUCK5:
243 reg = S5M8767_REG_BUCK5CTRL2;
244 break;
245 case S5M8767_BUCK6 ... S5M8767_BUCK9:
246 reg = S5M8767_REG_BUCK6CTRL2 + (reg_id - S5M8767_BUCK6) * 2;
247 break;
248 default:
249 return -EINVAL;
250 }
251
252 return reg;
253 }
254
255 static int s5m8767_convert_voltage_to_sel(const struct sec_voltage_desc *desc,
256 int min_vol)
257 {
258 int selector = 0;
259
260 if (desc == NULL)
261 return -EINVAL;
262
263 if (min_vol > desc->max)
264 return -EINVAL;
265
266 if (min_vol < desc->min)
267 min_vol = desc->min;
268
269 selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
270
271 if (desc->min + desc->step * selector > desc->max)
272 return -EINVAL;
273
274 return selector;
275 }
276
277 static inline int s5m8767_set_high(struct s5m8767_info *s5m8767)
278 {
279 int temp_index = s5m8767->buck_gpioindex;
280
281 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
282 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
283 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
284
285 return 0;
286 }
287
288 static inline int s5m8767_set_low(struct s5m8767_info *s5m8767)
289 {
290 int temp_index = s5m8767->buck_gpioindex;
291
292 gpio_set_value(s5m8767->buck_gpios[2], temp_index & 0x1);
293 gpio_set_value(s5m8767->buck_gpios[1], (temp_index >> 1) & 0x1);
294 gpio_set_value(s5m8767->buck_gpios[0], (temp_index >> 2) & 0x1);
295
296 return 0;
297 }
298
299 static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
300 unsigned selector)
301 {
302 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
303 int reg_id = rdev_get_id(rdev);
304 int old_index, index = 0;
305 u8 *buck234_vol = NULL;
306
307 switch (reg_id) {
308 case S5M8767_LDO1 ... S5M8767_LDO28:
309 break;
310 case S5M8767_BUCK1 ... S5M8767_BUCK6:
311 if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs)
312 buck234_vol = &s5m8767->buck2_vol[0];
313 else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs)
314 buck234_vol = &s5m8767->buck3_vol[0];
315 else if (reg_id == S5M8767_BUCK4 && s5m8767->buck4_gpiodvs)
316 buck234_vol = &s5m8767->buck4_vol[0];
317 break;
318 case S5M8767_BUCK7 ... S5M8767_BUCK8:
319 return -EINVAL;
320 case S5M8767_BUCK9:
321 break;
322 default:
323 return -EINVAL;
324 }
325
326 /* buck234_vol != NULL means to control buck234 voltage via DVS GPIO */
327 if (buck234_vol) {
328 while (*buck234_vol != selector) {
329 buck234_vol++;
330 index++;
331 }
332 old_index = s5m8767->buck_gpioindex;
333 s5m8767->buck_gpioindex = index;
334
335 if (index > old_index)
336 return s5m8767_set_high(s5m8767);
337 else
338 return s5m8767_set_low(s5m8767);
339 } else {
340 return regulator_set_voltage_sel_regmap(rdev, selector);
341 }
342 }
343
344 static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
345 unsigned int old_sel,
346 unsigned int new_sel)
347 {
348 struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
349 const struct sec_voltage_desc *desc;
350 int reg_id = rdev_get_id(rdev);
351
352 desc = reg_voltage_map[reg_id];
353
354 if ((old_sel < new_sel) && s5m8767->ramp_delay)
355 return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
356 s5m8767->ramp_delay * 1000);
357 return 0;
358 }
359
360 static struct regulator_ops s5m8767_ops = {
361 .list_voltage = regulator_list_voltage_linear,
362 .is_enabled = regulator_is_enabled_regmap,
363 .enable = regulator_enable_regmap,
364 .disable = regulator_disable_regmap,
365 .get_voltage_sel = regulator_get_voltage_sel_regmap,
366 .set_voltage_sel = s5m8767_set_voltage_sel,
367 .set_voltage_time_sel = s5m8767_set_voltage_time_sel,
368 };
369
370 static struct regulator_ops s5m8767_buck78_ops = {
371 .list_voltage = regulator_list_voltage_linear,
372 .is_enabled = regulator_is_enabled_regmap,
373 .enable = regulator_enable_regmap,
374 .disable = regulator_disable_regmap,
375 .get_voltage_sel = regulator_get_voltage_sel_regmap,
376 .set_voltage_sel = regulator_set_voltage_sel_regmap,
377 };
378
379 #define s5m8767_regulator_desc(_name) { \
380 .name = #_name, \
381 .id = S5M8767_##_name, \
382 .ops = &s5m8767_ops, \
383 .type = REGULATOR_VOLTAGE, \
384 .owner = THIS_MODULE, \
385 }
386
387 #define s5m8767_regulator_buck78_desc(_name) { \
388 .name = #_name, \
389 .id = S5M8767_##_name, \
390 .ops = &s5m8767_buck78_ops, \
391 .type = REGULATOR_VOLTAGE, \
392 .owner = THIS_MODULE, \
393 }
394
395 static struct regulator_desc regulators[] = {
396 s5m8767_regulator_desc(LDO1),
397 s5m8767_regulator_desc(LDO2),
398 s5m8767_regulator_desc(LDO3),
399 s5m8767_regulator_desc(LDO4),
400 s5m8767_regulator_desc(LDO5),
401 s5m8767_regulator_desc(LDO6),
402 s5m8767_regulator_desc(LDO7),
403 s5m8767_regulator_desc(LDO8),
404 s5m8767_regulator_desc(LDO9),
405 s5m8767_regulator_desc(LDO10),
406 s5m8767_regulator_desc(LDO11),
407 s5m8767_regulator_desc(LDO12),
408 s5m8767_regulator_desc(LDO13),
409 s5m8767_regulator_desc(LDO14),
410 s5m8767_regulator_desc(LDO15),
411 s5m8767_regulator_desc(LDO16),
412 s5m8767_regulator_desc(LDO17),
413 s5m8767_regulator_desc(LDO18),
414 s5m8767_regulator_desc(LDO19),
415 s5m8767_regulator_desc(LDO20),
416 s5m8767_regulator_desc(LDO21),
417 s5m8767_regulator_desc(LDO22),
418 s5m8767_regulator_desc(LDO23),
419 s5m8767_regulator_desc(LDO24),
420 s5m8767_regulator_desc(LDO25),
421 s5m8767_regulator_desc(LDO26),
422 s5m8767_regulator_desc(LDO27),
423 s5m8767_regulator_desc(LDO28),
424 s5m8767_regulator_desc(BUCK1),
425 s5m8767_regulator_desc(BUCK2),
426 s5m8767_regulator_desc(BUCK3),
427 s5m8767_regulator_desc(BUCK4),
428 s5m8767_regulator_desc(BUCK5),
429 s5m8767_regulator_desc(BUCK6),
430 s5m8767_regulator_buck78_desc(BUCK7),
431 s5m8767_regulator_buck78_desc(BUCK8),
432 s5m8767_regulator_desc(BUCK9),
433 };
434
435 /*
436 * Enable GPIO control over BUCK9 in regulator_config for that regulator.
437 */
438 static void s5m8767_regulator_config_ext_control(struct s5m8767_info *s5m8767,
439 struct sec_regulator_data *rdata,
440 struct regulator_config *config)
441 {
442 int i, mode = 0;
443
444 if (rdata->id != S5M8767_BUCK9)
445 return;
446
447 /* Check if opmode for regulator matches S5M8767_ENCTRL_USE_GPIO */
448 for (i = 0; i < s5m8767->num_regulators; i++) {
449 const struct sec_opmode_data *opmode = &s5m8767->opmode[i];
450 if (opmode->id == rdata->id) {
451 mode = s5m8767_opmode_reg[rdata->id][opmode->mode];
452 break;
453 }
454 }
455 if (mode != S5M8767_ENCTRL_USE_GPIO) {
456 dev_warn(s5m8767->dev,
457 "ext-control for %s: mismatched op_mode (%x), ignoring\n",
458 rdata->reg_node->name, mode);
459 return;
460 }
461
462 if (!gpio_is_valid(rdata->ext_control_gpio)) {
463 dev_warn(s5m8767->dev,
464 "ext-control for %s: GPIO not valid, ignoring\n",
465 rdata->reg_node->name);
466 return;
467 }
468
469 config->ena_gpio = rdata->ext_control_gpio;
470 config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
471 }
472
473 /*
474 * Turn on GPIO control over BUCK9.
475 */
476 static int s5m8767_enable_ext_control(struct s5m8767_info *s5m8767,
477 struct regulator_dev *rdev)
478 {
479 int id = rdev_get_id(rdev);
480 int ret, reg, enable_ctrl;
481
482 if (id != S5M8767_BUCK9)
483 return -EINVAL;
484
485 ret = s5m8767_get_register(s5m8767, id, &reg, &enable_ctrl);
486 if (ret)
487 return ret;
488
489 return regmap_update_bits(s5m8767->iodev->regmap_pmic,
490 reg, S5M8767_ENCTRL_MASK,
491 S5M8767_ENCTRL_USE_GPIO << S5M8767_ENCTRL_SHIFT);
492 }
493
494
495 #ifdef CONFIG_OF
496 static int s5m8767_pmic_dt_parse_dvs_gpio(struct sec_pmic_dev *iodev,
497 struct sec_platform_data *pdata,
498 struct device_node *pmic_np)
499 {
500 int i, gpio;
501
502 for (i = 0; i < 3; i++) {
503 gpio = of_get_named_gpio(pmic_np,
504 "s5m8767,pmic-buck-dvs-gpios", i);
505 if (!gpio_is_valid(gpio)) {
506 dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
507 return -EINVAL;
508 }
509 pdata->buck_gpios[i] = gpio;
510 }
511 return 0;
512 }
513
514 static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev,
515 struct sec_platform_data *pdata,
516 struct device_node *pmic_np)
517 {
518 int i, gpio;
519
520 for (i = 0; i < 3; i++) {
521 gpio = of_get_named_gpio(pmic_np,
522 "s5m8767,pmic-buck-ds-gpios", i);
523 if (!gpio_is_valid(gpio)) {
524 dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
525 return -EINVAL;
526 }
527 pdata->buck_ds[i] = gpio;
528 }
529 return 0;
530 }
531
532 static void s5m8767_pmic_dt_parse_ext_control_gpio(struct sec_pmic_dev *iodev,
533 struct sec_regulator_data *rdata,
534 struct device_node *reg_np)
535 {
536 rdata->ext_control_gpio = of_get_named_gpio(reg_np,
537 "s5m8767,pmic-ext-control-gpios", 0);
538 if (!gpio_is_valid(rdata->ext_control_gpio))
539 rdata->ext_control_gpio = 0;
540 }
541
542 static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
543 struct sec_platform_data *pdata)
544 {
545 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
546 struct device_node *pmic_np, *regulators_np, *reg_np;
547 struct sec_regulator_data *rdata;
548 struct sec_opmode_data *rmode;
549 unsigned int i, dvs_voltage_nr = 8, ret;
550
551 pmic_np = iodev->dev->of_node;
552 if (!pmic_np) {
553 dev_err(iodev->dev, "could not find pmic sub-node\n");
554 return -ENODEV;
555 }
556
557 regulators_np = of_get_child_by_name(pmic_np, "regulators");
558 if (!regulators_np) {
559 dev_err(iodev->dev, "could not find regulators sub-node\n");
560 return -EINVAL;
561 }
562
563 /* count the number of regulators to be supported in pmic */
564 pdata->num_regulators = of_get_child_count(regulators_np);
565
566 rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
567 pdata->num_regulators, GFP_KERNEL);
568 if (!rdata)
569 return -ENOMEM;
570
571 rmode = devm_kzalloc(&pdev->dev, sizeof(*rmode) *
572 pdata->num_regulators, GFP_KERNEL);
573 if (!rmode)
574 return -ENOMEM;
575
576 pdata->regulators = rdata;
577 pdata->opmode = rmode;
578 for_each_child_of_node(regulators_np, reg_np) {
579 for (i = 0; i < ARRAY_SIZE(regulators); i++)
580 if (!of_node_cmp(reg_np->name, regulators[i].name))
581 break;
582
583 if (i == ARRAY_SIZE(regulators)) {
584 dev_warn(iodev->dev,
585 "don't know how to configure regulator %s\n",
586 reg_np->name);
587 continue;
588 }
589
590 s5m8767_pmic_dt_parse_ext_control_gpio(iodev, rdata, reg_np);
591
592 rdata->id = i;
593 rdata->initdata = of_get_regulator_init_data(
594 &pdev->dev, reg_np);
595 rdata->reg_node = reg_np;
596 rdata++;
597 rmode->id = i;
598 if (of_property_read_u32(reg_np, "op_mode",
599 &rmode->mode)) {
600 dev_warn(iodev->dev,
601 "no op_mode property property at %s\n",
602 reg_np->full_name);
603
604 rmode->mode = S5M8767_OPMODE_NORMAL_MODE;
605 }
606 rmode++;
607 }
608
609 of_node_put(regulators_np);
610
611 if (of_get_property(pmic_np, "s5m8767,pmic-buck2-uses-gpio-dvs", NULL)) {
612 pdata->buck2_gpiodvs = true;
613
614 if (of_property_read_u32_array(pmic_np,
615 "s5m8767,pmic-buck2-dvs-voltage",
616 pdata->buck2_voltage, dvs_voltage_nr)) {
617 dev_err(iodev->dev, "buck2 voltages not specified\n");
618 return -EINVAL;
619 }
620 }
621
622 if (of_get_property(pmic_np, "s5m8767,pmic-buck3-uses-gpio-dvs", NULL)) {
623 pdata->buck3_gpiodvs = true;
624
625 if (of_property_read_u32_array(pmic_np,
626 "s5m8767,pmic-buck3-dvs-voltage",
627 pdata->buck3_voltage, dvs_voltage_nr)) {
628 dev_err(iodev->dev, "buck3 voltages not specified\n");
629 return -EINVAL;
630 }
631 }
632
633 if (of_get_property(pmic_np, "s5m8767,pmic-buck4-uses-gpio-dvs", NULL)) {
634 pdata->buck4_gpiodvs = true;
635
636 if (of_property_read_u32_array(pmic_np,
637 "s5m8767,pmic-buck4-dvs-voltage",
638 pdata->buck4_voltage, dvs_voltage_nr)) {
639 dev_err(iodev->dev, "buck4 voltages not specified\n");
640 return -EINVAL;
641 }
642 }
643
644 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
645 pdata->buck4_gpiodvs) {
646 ret = s5m8767_pmic_dt_parse_dvs_gpio(iodev, pdata, pmic_np);
647 if (ret)
648 return -EINVAL;
649
650 if (of_property_read_u32(pmic_np,
651 "s5m8767,pmic-buck-default-dvs-idx",
652 &pdata->buck_default_idx)) {
653 pdata->buck_default_idx = 0;
654 } else {
655 if (pdata->buck_default_idx >= 8) {
656 pdata->buck_default_idx = 0;
657 dev_info(iodev->dev,
658 "invalid value for default dvs index, use 0\n");
659 }
660 }
661 }
662
663 ret = s5m8767_pmic_dt_parse_ds_gpio(iodev, pdata, pmic_np);
664 if (ret)
665 return -EINVAL;
666
667 if (of_get_property(pmic_np, "s5m8767,pmic-buck2-ramp-enable", NULL))
668 pdata->buck2_ramp_enable = true;
669
670 if (of_get_property(pmic_np, "s5m8767,pmic-buck3-ramp-enable", NULL))
671 pdata->buck3_ramp_enable = true;
672
673 if (of_get_property(pmic_np, "s5m8767,pmic-buck4-ramp-enable", NULL))
674 pdata->buck4_ramp_enable = true;
675
676 if (pdata->buck2_ramp_enable || pdata->buck3_ramp_enable
677 || pdata->buck4_ramp_enable) {
678 if (of_property_read_u32(pmic_np, "s5m8767,pmic-buck-ramp-delay",
679 &pdata->buck_ramp_delay))
680 pdata->buck_ramp_delay = 0;
681 }
682
683 return 0;
684 }
685 #else
686 static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
687 struct sec_platform_data *pdata)
688 {
689 return 0;
690 }
691 #endif /* CONFIG_OF */
692
693 static int s5m8767_pmic_probe(struct platform_device *pdev)
694 {
695 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
696 struct sec_platform_data *pdata = iodev->pdata;
697 struct regulator_config config = { };
698 struct regulator_dev **rdev;
699 struct s5m8767_info *s5m8767;
700 int i, ret, size, buck_init;
701
702 if (!pdata) {
703 dev_err(pdev->dev.parent, "Platform data not supplied\n");
704 return -ENODEV;
705 }
706
707 if (iodev->dev->of_node) {
708 ret = s5m8767_pmic_dt_parse_pdata(pdev, pdata);
709 if (ret)
710 return ret;
711 }
712
713 if (pdata->buck2_gpiodvs) {
714 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
715 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
716 return -EINVAL;
717 }
718 }
719
720 if (pdata->buck3_gpiodvs) {
721 if (pdata->buck2_gpiodvs || pdata->buck4_gpiodvs) {
722 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
723 return -EINVAL;
724 }
725 }
726
727 if (pdata->buck4_gpiodvs) {
728 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs) {
729 dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
730 return -EINVAL;
731 }
732 }
733
734 s5m8767 = devm_kzalloc(&pdev->dev, sizeof(struct s5m8767_info),
735 GFP_KERNEL);
736 if (!s5m8767)
737 return -ENOMEM;
738
739 size = sizeof(struct regulator_dev *) * (S5M8767_REG_MAX - 2);
740 s5m8767->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
741 if (!s5m8767->rdev)
742 return -ENOMEM;
743
744 rdev = s5m8767->rdev;
745 s5m8767->dev = &pdev->dev;
746 s5m8767->iodev = iodev;
747 s5m8767->num_regulators = pdata->num_regulators;
748 platform_set_drvdata(pdev, s5m8767);
749
750 s5m8767->buck_gpioindex = pdata->buck_default_idx;
751 s5m8767->buck2_gpiodvs = pdata->buck2_gpiodvs;
752 s5m8767->buck3_gpiodvs = pdata->buck3_gpiodvs;
753 s5m8767->buck4_gpiodvs = pdata->buck4_gpiodvs;
754 s5m8767->buck_gpios[0] = pdata->buck_gpios[0];
755 s5m8767->buck_gpios[1] = pdata->buck_gpios[1];
756 s5m8767->buck_gpios[2] = pdata->buck_gpios[2];
757 s5m8767->buck_ds[0] = pdata->buck_ds[0];
758 s5m8767->buck_ds[1] = pdata->buck_ds[1];
759 s5m8767->buck_ds[2] = pdata->buck_ds[2];
760
761 s5m8767->ramp_delay = pdata->buck_ramp_delay;
762 s5m8767->buck2_ramp = pdata->buck2_ramp_enable;
763 s5m8767->buck3_ramp = pdata->buck3_ramp_enable;
764 s5m8767->buck4_ramp = pdata->buck4_ramp_enable;
765 s5m8767->opmode = pdata->opmode;
766
767 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
768 pdata->buck2_init);
769
770 regmap_write(s5m8767->iodev->regmap_pmic, S5M8767_REG_BUCK2DVS2,
771 buck_init);
772
773 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
774 pdata->buck3_init);
775
776 regmap_write(s5m8767->iodev->regmap_pmic, S5M8767_REG_BUCK3DVS2,
777 buck_init);
778
779 buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
780 pdata->buck4_init);
781
782 regmap_write(s5m8767->iodev->regmap_pmic, S5M8767_REG_BUCK4DVS2,
783 buck_init);
784
785 for (i = 0; i < 8; i++) {
786 if (s5m8767->buck2_gpiodvs) {
787 s5m8767->buck2_vol[i] =
788 s5m8767_convert_voltage_to_sel(
789 &buck_voltage_val2,
790 pdata->buck2_voltage[i]);
791 }
792
793 if (s5m8767->buck3_gpiodvs) {
794 s5m8767->buck3_vol[i] =
795 s5m8767_convert_voltage_to_sel(
796 &buck_voltage_val2,
797 pdata->buck3_voltage[i]);
798 }
799
800 if (s5m8767->buck4_gpiodvs) {
801 s5m8767->buck4_vol[i] =
802 s5m8767_convert_voltage_to_sel(
803 &buck_voltage_val2,
804 pdata->buck4_voltage[i]);
805 }
806 }
807
808 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
809 pdata->buck4_gpiodvs) {
810
811 if (!gpio_is_valid(pdata->buck_gpios[0]) ||
812 !gpio_is_valid(pdata->buck_gpios[1]) ||
813 !gpio_is_valid(pdata->buck_gpios[2])) {
814 dev_err(&pdev->dev, "GPIO NOT VALID\n");
815 return -EINVAL;
816 }
817
818 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[0],
819 "S5M8767 SET1");
820 if (ret)
821 return ret;
822
823 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[1],
824 "S5M8767 SET2");
825 if (ret)
826 return ret;
827
828 ret = devm_gpio_request(&pdev->dev, pdata->buck_gpios[2],
829 "S5M8767 SET3");
830 if (ret)
831 return ret;
832
833 /* SET1 GPIO */
834 gpio_direction_output(pdata->buck_gpios[0],
835 (s5m8767->buck_gpioindex >> 2) & 0x1);
836 /* SET2 GPIO */
837 gpio_direction_output(pdata->buck_gpios[1],
838 (s5m8767->buck_gpioindex >> 1) & 0x1);
839 /* SET3 GPIO */
840 gpio_direction_output(pdata->buck_gpios[2],
841 (s5m8767->buck_gpioindex >> 0) & 0x1);
842 }
843
844 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[0], "S5M8767 DS2");
845 if (ret)
846 return ret;
847
848 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[1], "S5M8767 DS3");
849 if (ret)
850 return ret;
851
852 ret = devm_gpio_request(&pdev->dev, pdata->buck_ds[2], "S5M8767 DS4");
853 if (ret)
854 return ret;
855
856 /* DS2 GPIO */
857 gpio_direction_output(pdata->buck_ds[0], 0x0);
858 /* DS3 GPIO */
859 gpio_direction_output(pdata->buck_ds[1], 0x0);
860 /* DS4 GPIO */
861 gpio_direction_output(pdata->buck_ds[2], 0x0);
862
863 if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
864 pdata->buck4_gpiodvs) {
865 regmap_update_bits(s5m8767->iodev->regmap_pmic,
866 S5M8767_REG_BUCK2CTRL, 1 << 1,
867 (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1));
868 regmap_update_bits(s5m8767->iodev->regmap_pmic,
869 S5M8767_REG_BUCK3CTRL, 1 << 1,
870 (pdata->buck3_gpiodvs) ? (1 << 1) : (0 << 1));
871 regmap_update_bits(s5m8767->iodev->regmap_pmic,
872 S5M8767_REG_BUCK4CTRL, 1 << 1,
873 (pdata->buck4_gpiodvs) ? (1 << 1) : (0 << 1));
874 }
875
876 /* Initialize GPIO DVS registers */
877 for (i = 0; i < 8; i++) {
878 if (s5m8767->buck2_gpiodvs) {
879 regmap_write(s5m8767->iodev->regmap_pmic,
880 S5M8767_REG_BUCK2DVS1 + i,
881 s5m8767->buck2_vol[i]);
882 }
883
884 if (s5m8767->buck3_gpiodvs) {
885 regmap_write(s5m8767->iodev->regmap_pmic,
886 S5M8767_REG_BUCK3DVS1 + i,
887 s5m8767->buck3_vol[i]);
888 }
889
890 if (s5m8767->buck4_gpiodvs) {
891 regmap_write(s5m8767->iodev->regmap_pmic,
892 S5M8767_REG_BUCK4DVS1 + i,
893 s5m8767->buck4_vol[i]);
894 }
895 }
896
897 if (s5m8767->buck2_ramp)
898 regmap_update_bits(s5m8767->iodev->regmap_pmic,
899 S5M8767_REG_DVSRAMP, 0x08, 0x08);
900
901 if (s5m8767->buck3_ramp)
902 regmap_update_bits(s5m8767->iodev->regmap_pmic,
903 S5M8767_REG_DVSRAMP, 0x04, 0x04);
904
905 if (s5m8767->buck4_ramp)
906 regmap_update_bits(s5m8767->iodev->regmap_pmic,
907 S5M8767_REG_DVSRAMP, 0x02, 0x02);
908
909 if (s5m8767->buck2_ramp || s5m8767->buck3_ramp
910 || s5m8767->buck4_ramp) {
911 unsigned int val;
912 switch (s5m8767->ramp_delay) {
913 case 5:
914 val = S5M8767_DVS_BUCK_RAMP_5;
915 break;
916 case 10:
917 val = S5M8767_DVS_BUCK_RAMP_10;
918 break;
919 case 25:
920 val = S5M8767_DVS_BUCK_RAMP_25;
921 break;
922 case 50:
923 val = S5M8767_DVS_BUCK_RAMP_50;
924 break;
925 case 100:
926 val = S5M8767_DVS_BUCK_RAMP_100;
927 break;
928 default:
929 val = S5M8767_DVS_BUCK_RAMP_10;
930 }
931 regmap_update_bits(s5m8767->iodev->regmap_pmic,
932 S5M8767_REG_DVSRAMP,
933 S5M8767_DVS_BUCK_RAMP_MASK,
934 val << S5M8767_DVS_BUCK_RAMP_SHIFT);
935 }
936
937 for (i = 0; i < pdata->num_regulators; i++) {
938 const struct sec_voltage_desc *desc;
939 int id = pdata->regulators[i].id;
940 int enable_reg, enable_val;
941
942 desc = reg_voltage_map[id];
943 if (desc) {
944 regulators[id].n_voltages =
945 (desc->max - desc->min) / desc->step + 1;
946 regulators[id].min_uV = desc->min;
947 regulators[id].uV_step = desc->step;
948 regulators[id].vsel_reg =
949 s5m8767_get_vsel_reg(id, s5m8767);
950 if (id < S5M8767_BUCK1)
951 regulators[id].vsel_mask = 0x3f;
952 else
953 regulators[id].vsel_mask = 0xff;
954
955 s5m8767_get_register(s5m8767, id, &enable_reg,
956 &enable_val);
957 regulators[id].enable_reg = enable_reg;
958 regulators[id].enable_mask = S5M8767_ENCTRL_MASK;
959 regulators[id].enable_val = enable_val;
960 }
961
962 config.dev = s5m8767->dev;
963 config.init_data = pdata->regulators[i].initdata;
964 config.driver_data = s5m8767;
965 config.regmap = iodev->regmap_pmic;
966 config.of_node = pdata->regulators[i].reg_node;
967 config.ena_gpio = config.ena_gpio_flags = 0;
968 if (pdata->regulators[i].ext_control_gpio)
969 s5m8767_regulator_config_ext_control(s5m8767,
970 &pdata->regulators[i], &config);
971
972 rdev[i] = devm_regulator_register(&pdev->dev, &regulators[id],
973 &config);
974 if (IS_ERR(rdev[i])) {
975 ret = PTR_ERR(rdev[i]);
976 dev_err(s5m8767->dev, "regulator init failed for %d\n",
977 id);
978 return ret;
979 }
980
981 if (pdata->regulators[i].ext_control_gpio) {
982 ret = s5m8767_enable_ext_control(s5m8767, rdev[i]);
983 if (ret < 0) {
984 dev_err(s5m8767->dev,
985 "failed to enable gpio control over %s: %d\n",
986 rdev[i]->desc->name, ret);
987 return ret;
988 }
989 }
990 }
991
992 return 0;
993 }
994
995 static const struct platform_device_id s5m8767_pmic_id[] = {
996 { "s5m8767-pmic", 0},
997 { },
998 };
999 MODULE_DEVICE_TABLE(platform, s5m8767_pmic_id);
1000
1001 static struct platform_driver s5m8767_pmic_driver = {
1002 .driver = {
1003 .name = "s5m8767-pmic",
1004 .owner = THIS_MODULE,
1005 },
1006 .probe = s5m8767_pmic_probe,
1007 .id_table = s5m8767_pmic_id,
1008 };
1009
1010 static int __init s5m8767_pmic_init(void)
1011 {
1012 return platform_driver_register(&s5m8767_pmic_driver);
1013 }
1014 subsys_initcall(s5m8767_pmic_init);
1015
1016 static void __exit s5m8767_pmic_exit(void)
1017 {
1018 platform_driver_unregister(&s5m8767_pmic_driver);
1019 }
1020 module_exit(s5m8767_pmic_exit);
1021
1022 /* Module information */
1023 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1024 MODULE_DESCRIPTION("SAMSUNG S5M8767 Regulator Driver");
1025 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.068173 seconds and 5 git commands to generate.