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Staging: unisys: Remove RETINT macro
[linux/fpc-iii.git] / drivers / regulator / s2mps11.c
blobcd0b9e35a56d90ccc4fd78fe5fe781f2f009cd77
1 /*
2 * s2mps11.c
3 *
4 * Copyright (c) 2012 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/of.h>
20 #include <linux/regmap.h>
21 #include <linux/platform_device.h>
22 #include <linux/regulator/driver.h>
23 #include <linux/regulator/machine.h>
24 #include <linux/regulator/of_regulator.h>
25 #include <linux/mfd/samsung/core.h>
26 #include <linux/mfd/samsung/s2mps11.h>
27
28 #define S2MPS11_REGULATOR_CNT ARRAY_SIZE(regulators)
29
30 struct s2mps11_info {
31 struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX];
32
33 int ramp_delay2;
34 int ramp_delay34;
35 int ramp_delay5;
36 int ramp_delay16;
37 int ramp_delay7810;
38 int ramp_delay9;
39 };
40
41 static int get_ramp_delay(int ramp_delay)
42 {
43 unsigned char cnt = 0;
44
45 ramp_delay /= 6250;
46
47 while (true) {
48 ramp_delay = ramp_delay >> 1;
49 if (ramp_delay == 0)
50 break;
51 cnt++;
52 }
53
54 if (cnt > 3)
55 cnt = 3;
56
57 return cnt;
58 }
59
60 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
61 unsigned int old_selector,
62 unsigned int new_selector)
63 {
64 struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
65 unsigned int ramp_delay = 0;
66 int old_volt, new_volt;
67
68 switch (rdev->desc->id) {
69 case S2MPS11_BUCK2:
70 ramp_delay = s2mps11->ramp_delay2;
71 break;
72 case S2MPS11_BUCK3:
73 case S2MPS11_BUCK4:
74 ramp_delay = s2mps11->ramp_delay34;
75 break;
76 case S2MPS11_BUCK5:
77 ramp_delay = s2mps11->ramp_delay5;
78 break;
79 case S2MPS11_BUCK6:
80 case S2MPS11_BUCK1:
81 ramp_delay = s2mps11->ramp_delay16;
82 break;
83 case S2MPS11_BUCK7:
84 case S2MPS11_BUCK8:
85 case S2MPS11_BUCK10:
86 ramp_delay = s2mps11->ramp_delay7810;
87 break;
88 case S2MPS11_BUCK9:
89 ramp_delay = s2mps11->ramp_delay9;
90 }
91
92 if (ramp_delay == 0)
93 ramp_delay = rdev->desc->ramp_delay;
94
95 old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
96 new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
97
98 return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
99 }
100
101 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
102 {
103 struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
104 unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
105 unsigned int ramp_enable = 1, enable_shift = 0;
106 int ret;
107
108 switch (rdev->desc->id) {
109 case S2MPS11_BUCK1:
110 if (ramp_delay > s2mps11->ramp_delay16)
111 s2mps11->ramp_delay16 = ramp_delay;
112 else
113 ramp_delay = s2mps11->ramp_delay16;
114
115 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
116 break;
117 case S2MPS11_BUCK2:
118 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
119 if (!ramp_delay) {
120 ramp_enable = 0;
121 break;
122 }
123
124 s2mps11->ramp_delay2 = ramp_delay;
125 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
126 ramp_reg = S2MPS11_REG_RAMP;
127 break;
128 case S2MPS11_BUCK3:
129 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
130 if (!ramp_delay) {
131 ramp_enable = 0;
132 break;
133 }
134
135 if (ramp_delay > s2mps11->ramp_delay34)
136 s2mps11->ramp_delay34 = ramp_delay;
137 else
138 ramp_delay = s2mps11->ramp_delay34;
139
140 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
141 ramp_reg = S2MPS11_REG_RAMP;
142 break;
143 case S2MPS11_BUCK4:
144 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
145 if (!ramp_delay) {
146 ramp_enable = 0;
147 break;
148 }
149
150 if (ramp_delay > s2mps11->ramp_delay34)
151 s2mps11->ramp_delay34 = ramp_delay;
152 else
153 ramp_delay = s2mps11->ramp_delay34;
154
155 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
156 ramp_reg = S2MPS11_REG_RAMP;
157 break;
158 case S2MPS11_BUCK5:
159 s2mps11->ramp_delay5 = ramp_delay;
160 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
161 break;
162 case S2MPS11_BUCK6:
163 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
164 if (!ramp_delay) {
165 ramp_enable = 0;
166 break;
167 }
168
169 if (ramp_delay > s2mps11->ramp_delay16)
170 s2mps11->ramp_delay16 = ramp_delay;
171 else
172 ramp_delay = s2mps11->ramp_delay16;
173
174 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
175 break;
176 case S2MPS11_BUCK7:
177 case S2MPS11_BUCK8:
178 case S2MPS11_BUCK10:
179 if (ramp_delay > s2mps11->ramp_delay7810)
180 s2mps11->ramp_delay7810 = ramp_delay;
181 else
182 ramp_delay = s2mps11->ramp_delay7810;
183
184 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
185 break;
186 case S2MPS11_BUCK9:
187 s2mps11->ramp_delay9 = ramp_delay;
188 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
189 break;
190 default:
191 return 0;
192 }
193
194 if (!ramp_enable)
195 goto ramp_disable;
196
197 if (enable_shift) {
198 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
199 1 << enable_shift, 1 << enable_shift);
200 if (ret) {
201 dev_err(&rdev->dev, "failed to enable ramp rate\n");
202 return ret;
203 }
204 }
205
206 ramp_val = get_ramp_delay(ramp_delay);
207
208 return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
209 ramp_val << ramp_shift);
210
211 ramp_disable:
212 return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
213 1 << enable_shift, 0);
214 }
215
216 static struct regulator_ops s2mps11_ldo_ops = {
217 .list_voltage = regulator_list_voltage_linear,
218 .map_voltage = regulator_map_voltage_linear,
219 .is_enabled = regulator_is_enabled_regmap,
220 .enable = regulator_enable_regmap,
221 .disable = regulator_disable_regmap,
222 .get_voltage_sel = regulator_get_voltage_sel_regmap,
223 .set_voltage_sel = regulator_set_voltage_sel_regmap,
224 .set_voltage_time_sel = regulator_set_voltage_time_sel,
225 };
226
227 static struct regulator_ops s2mps11_buck_ops = {
228 .list_voltage = regulator_list_voltage_linear,
229 .map_voltage = regulator_map_voltage_linear,
230 .is_enabled = regulator_is_enabled_regmap,
231 .enable = regulator_enable_regmap,
232 .disable = regulator_disable_regmap,
233 .get_voltage_sel = regulator_get_voltage_sel_regmap,
234 .set_voltage_sel = regulator_set_voltage_sel_regmap,
235 .set_voltage_time_sel = s2mps11_regulator_set_voltage_time_sel,
236 .set_ramp_delay = s2mps11_set_ramp_delay,
237 };
238
239 #define regulator_desc_ldo1(num) { \
240 .name = "LDO"#num, \
241 .id = S2MPS11_LDO##num, \
242 .ops = &s2mps11_ldo_ops, \
243 .type = REGULATOR_VOLTAGE, \
244 .owner = THIS_MODULE, \
245 .min_uV = S2MPS11_LDO_MIN, \
246 .uV_step = S2MPS11_LDO_STEP1, \
247 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
248 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
249 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
250 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
251 .enable_mask = S2MPS11_ENABLE_MASK \
252 }
253 #define regulator_desc_ldo2(num) { \
254 .name = "LDO"#num, \
255 .id = S2MPS11_LDO##num, \
256 .ops = &s2mps11_ldo_ops, \
257 .type = REGULATOR_VOLTAGE, \
258 .owner = THIS_MODULE, \
259 .min_uV = S2MPS11_LDO_MIN, \
260 .uV_step = S2MPS11_LDO_STEP2, \
261 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
262 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
263 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
264 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
265 .enable_mask = S2MPS11_ENABLE_MASK \
266 }
267
268 #define regulator_desc_buck1_4(num) { \
269 .name = "BUCK"#num, \
270 .id = S2MPS11_BUCK##num, \
271 .ops = &s2mps11_buck_ops, \
272 .type = REGULATOR_VOLTAGE, \
273 .owner = THIS_MODULE, \
274 .min_uV = S2MPS11_BUCK_MIN1, \
275 .uV_step = S2MPS11_BUCK_STEP1, \
276 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
277 .ramp_delay = S2MPS11_RAMP_DELAY, \
278 .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
279 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
280 .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
281 .enable_mask = S2MPS11_ENABLE_MASK \
282 }
283
284 #define regulator_desc_buck5 { \
285 .name = "BUCK5", \
286 .id = S2MPS11_BUCK5, \
287 .ops = &s2mps11_buck_ops, \
288 .type = REGULATOR_VOLTAGE, \
289 .owner = THIS_MODULE, \
290 .min_uV = S2MPS11_BUCK_MIN1, \
291 .uV_step = S2MPS11_BUCK_STEP1, \
292 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
293 .ramp_delay = S2MPS11_RAMP_DELAY, \
294 .vsel_reg = S2MPS11_REG_B5CTRL2, \
295 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
296 .enable_reg = S2MPS11_REG_B5CTRL1, \
297 .enable_mask = S2MPS11_ENABLE_MASK \
298 }
299
300 #define regulator_desc_buck6_8(num) { \
301 .name = "BUCK"#num, \
302 .id = S2MPS11_BUCK##num, \
303 .ops = &s2mps11_buck_ops, \
304 .type = REGULATOR_VOLTAGE, \
305 .owner = THIS_MODULE, \
306 .min_uV = S2MPS11_BUCK_MIN1, \
307 .uV_step = S2MPS11_BUCK_STEP1, \
308 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
309 .ramp_delay = S2MPS11_RAMP_DELAY, \
310 .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
311 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
312 .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
313 .enable_mask = S2MPS11_ENABLE_MASK \
314 }
315
316 #define regulator_desc_buck9 { \
317 .name = "BUCK9", \
318 .id = S2MPS11_BUCK9, \
319 .ops = &s2mps11_buck_ops, \
320 .type = REGULATOR_VOLTAGE, \
321 .owner = THIS_MODULE, \
322 .min_uV = S2MPS11_BUCK_MIN3, \
323 .uV_step = S2MPS11_BUCK_STEP3, \
324 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
325 .ramp_delay = S2MPS11_RAMP_DELAY, \
326 .vsel_reg = S2MPS11_REG_B9CTRL2, \
327 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
328 .enable_reg = S2MPS11_REG_B9CTRL1, \
329 .enable_mask = S2MPS11_ENABLE_MASK \
330 }
331
332 #define regulator_desc_buck10 { \
333 .name = "BUCK10", \
334 .id = S2MPS11_BUCK10, \
335 .ops = &s2mps11_buck_ops, \
336 .type = REGULATOR_VOLTAGE, \
337 .owner = THIS_MODULE, \
338 .min_uV = S2MPS11_BUCK_MIN2, \
339 .uV_step = S2MPS11_BUCK_STEP2, \
340 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
341 .ramp_delay = S2MPS11_RAMP_DELAY, \
342 .vsel_reg = S2MPS11_REG_B10CTRL2, \
343 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
344 .enable_reg = S2MPS11_REG_B10CTRL1, \
345 .enable_mask = S2MPS11_ENABLE_MASK \
346 }
347
348 static struct regulator_desc regulators[] = {
349 regulator_desc_ldo2(1),
350 regulator_desc_ldo1(2),
351 regulator_desc_ldo1(3),
352 regulator_desc_ldo1(4),
353 regulator_desc_ldo1(5),
354 regulator_desc_ldo2(6),
355 regulator_desc_ldo1(7),
356 regulator_desc_ldo1(8),
357 regulator_desc_ldo1(9),
358 regulator_desc_ldo1(10),
359 regulator_desc_ldo2(11),
360 regulator_desc_ldo1(12),
361 regulator_desc_ldo1(13),
362 regulator_desc_ldo1(14),
363 regulator_desc_ldo1(15),
364 regulator_desc_ldo1(16),
365 regulator_desc_ldo1(17),
366 regulator_desc_ldo1(18),
367 regulator_desc_ldo1(19),
368 regulator_desc_ldo1(20),
369 regulator_desc_ldo1(21),
370 regulator_desc_ldo2(22),
371 regulator_desc_ldo2(23),
372 regulator_desc_ldo1(24),
373 regulator_desc_ldo1(25),
374 regulator_desc_ldo1(26),
375 regulator_desc_ldo2(27),
376 regulator_desc_ldo1(28),
377 regulator_desc_ldo1(29),
378 regulator_desc_ldo1(30),
379 regulator_desc_ldo1(31),
380 regulator_desc_ldo1(32),
381 regulator_desc_ldo1(33),
382 regulator_desc_ldo1(34),
383 regulator_desc_ldo1(35),
384 regulator_desc_ldo1(36),
385 regulator_desc_ldo1(37),
386 regulator_desc_ldo1(38),
387 regulator_desc_buck1_4(1),
388 regulator_desc_buck1_4(2),
389 regulator_desc_buck1_4(3),
390 regulator_desc_buck1_4(4),
391 regulator_desc_buck5,
392 regulator_desc_buck6_8(6),
393 regulator_desc_buck6_8(7),
394 regulator_desc_buck6_8(8),
395 regulator_desc_buck9,
396 regulator_desc_buck10,
397 };
398
399 static int s2mps11_pmic_probe(struct platform_device *pdev)
400 {
401 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
402 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
403 struct of_regulator_match rdata[S2MPS11_REGULATOR_MAX];
404 struct device_node *reg_np = NULL;
405 struct regulator_config config = { };
406 struct s2mps11_info *s2mps11;
407 int i, ret;
408
409 s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
410 GFP_KERNEL);
411 if (!s2mps11)
412 return -ENOMEM;
413
414 if (!iodev->dev->of_node) {
415 if (pdata) {
416 goto common_reg;
417 } else {
418 dev_err(pdev->dev.parent,
419 "Platform data or DT node not supplied\n");
420 return -ENODEV;
421 }
422 }
423
424 for (i = 0; i < S2MPS11_REGULATOR_CNT; i++)
425 rdata[i].name = regulators[i].name;
426
427 reg_np = of_find_node_by_name(iodev->dev->of_node, "regulators");
428 if (!reg_np) {
429 dev_err(&pdev->dev, "could not find regulators sub-node\n");
430 return -EINVAL;
431 }
432
433 of_regulator_match(&pdev->dev, reg_np, rdata, S2MPS11_REGULATOR_MAX);
434
435 common_reg:
436 platform_set_drvdata(pdev, s2mps11);
437
438 config.dev = &pdev->dev;
439 config.regmap = iodev->regmap_pmic;
440 config.driver_data = s2mps11;
441 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
442 if (!reg_np) {
443 config.init_data = pdata->regulators[i].initdata;
444 config.of_node = pdata->regulators[i].reg_node;
445 } else {
446 config.init_data = rdata[i].init_data;
447 config.of_node = rdata[i].of_node;
448 }
449
450 s2mps11->rdev[i] = devm_regulator_register(&pdev->dev,
451 &regulators[i], &config);
452 if (IS_ERR(s2mps11->rdev[i])) {
453 ret = PTR_ERR(s2mps11->rdev[i]);
454 dev_err(&pdev->dev, "regulator init failed for %d\n",
455 i);
456 return ret;
457 }
458 }
459
460 return 0;
461 }
462
463 static const struct platform_device_id s2mps11_pmic_id[] = {
464 { "s2mps11-pmic", 0},
465 { },
466 };
467 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
468
469 static struct platform_driver s2mps11_pmic_driver = {
470 .driver = {
471 .name = "s2mps11-pmic",
472 .owner = THIS_MODULE,
473 },
474 .probe = s2mps11_pmic_probe,
475 .id_table = s2mps11_pmic_id,
476 };
477
478 static int __init s2mps11_pmic_init(void)
479 {
480 return platform_driver_register(&s2mps11_pmic_driver);
481 }
482 subsys_initcall(s2mps11_pmic_init);
483
484 static void __exit s2mps11_pmic_exit(void)
485 {
486 platform_driver_unregister(&s2mps11_pmic_driver);
487 }
488 module_exit(s2mps11_pmic_exit);
489
490 /* Module information */
491 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
492 MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
493 MODULE_LICENSE("GPL");
Linux with added FPC-III support