1 /*
2 * s2mps11.c
3 *
4 * Copyright (c) 2012-2014 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 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 */
18
19 #include <linux/bug.h>
20 #include <linux/err.h>
21 #include <linux/gpio.h>
22 #include <linux/slab.h>
23 #include <linux/module.h>
24 #include <linux/of.h>
25 #include <linux/regmap.h>
26 #include <linux/platform_device.h>
27 #include <linux/regulator/driver.h>
28 #include <linux/regulator/machine.h>
29 #include <linux/regulator/of_regulator.h>
30 #include <linux/of_gpio.h>
31 #include <linux/mfd/samsung/core.h>
32 #include <linux/mfd/samsung/s2mps11.h>
33 #include <linux/mfd/samsung/s2mps13.h>
34 #include <linux/mfd/samsung/s2mps14.h>
35 #include <linux/mfd/samsung/s2mpu02.h>
36
37 /* The highest number of possible regulators for supported devices. */
38 #define S2MPS_REGULATOR_MAX S2MPS13_REGULATOR_MAX
39 struct s2mps11_info {
40 unsigned int rdev_num;
41 int ramp_delay2;
42 int ramp_delay34;
43 int ramp_delay5;
44 int ramp_delay16;
45 int ramp_delay7810;
46 int ramp_delay9;
47
48 enum sec_device_type dev_type;
49
50 /*
51 * One bit for each S2MPS13/S2MPS14/S2MPU02 regulator whether
52 * the suspend mode was enabled.
53 */
54 DECLARE_BITMAP(suspend_state, S2MPS_REGULATOR_MAX);
55
56 /* Array of size rdev_num with GPIO-s for external sleep control */
57 int *ext_control_gpio;
58 };
59
get_ramp_delay(int ramp_delay)60 static int get_ramp_delay(int ramp_delay)
61 {
62 unsigned char cnt = 0;
63
64 ramp_delay /= 6250;
65
66 while (true) {
67 ramp_delay = ramp_delay >> 1;
68 if (ramp_delay == 0)
69 break;
70 cnt++;
71 }
72
73 if (cnt > 3)
74 cnt = 3;
75
76 return cnt;
77 }
78
s2mps11_regulator_set_voltage_time_sel(struct regulator_dev * rdev,unsigned int old_selector,unsigned int new_selector)79 static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
80 unsigned int old_selector,
81 unsigned int new_selector)
82 {
83 struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
84 unsigned int ramp_delay = 0;
85 int old_volt, new_volt;
86
87 switch (rdev_get_id(rdev)) {
88 case S2MPS11_BUCK2:
89 ramp_delay = s2mps11->ramp_delay2;
90 break;
91 case S2MPS11_BUCK3:
92 case S2MPS11_BUCK4:
93 ramp_delay = s2mps11->ramp_delay34;
94 break;
95 case S2MPS11_BUCK5:
96 ramp_delay = s2mps11->ramp_delay5;
97 break;
98 case S2MPS11_BUCK6:
99 case S2MPS11_BUCK1:
100 ramp_delay = s2mps11->ramp_delay16;
101 break;
102 case S2MPS11_BUCK7:
103 case S2MPS11_BUCK8:
104 case S2MPS11_BUCK10:
105 ramp_delay = s2mps11->ramp_delay7810;
106 break;
107 case S2MPS11_BUCK9:
108 ramp_delay = s2mps11->ramp_delay9;
109 }
110
111 if (ramp_delay == 0)
112 ramp_delay = rdev->desc->ramp_delay;
113
114 old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
115 new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
116
117 return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
118 }
119
s2mps11_set_ramp_delay(struct regulator_dev * rdev,int ramp_delay)120 static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
121 {
122 struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
123 unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
124 unsigned int ramp_enable = 1, enable_shift = 0;
125 int ret;
126
127 switch (rdev_get_id(rdev)) {
128 case S2MPS11_BUCK1:
129 if (ramp_delay > s2mps11->ramp_delay16)
130 s2mps11->ramp_delay16 = ramp_delay;
131 else
132 ramp_delay = s2mps11->ramp_delay16;
133
134 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
135 break;
136 case S2MPS11_BUCK2:
137 enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
138 if (!ramp_delay) {
139 ramp_enable = 0;
140 break;
141 }
142
143 s2mps11->ramp_delay2 = ramp_delay;
144 ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
145 ramp_reg = S2MPS11_REG_RAMP;
146 break;
147 case S2MPS11_BUCK3:
148 enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
149 if (!ramp_delay) {
150 ramp_enable = 0;
151 break;
152 }
153
154 if (ramp_delay > s2mps11->ramp_delay34)
155 s2mps11->ramp_delay34 = ramp_delay;
156 else
157 ramp_delay = s2mps11->ramp_delay34;
158
159 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
160 ramp_reg = S2MPS11_REG_RAMP;
161 break;
162 case S2MPS11_BUCK4:
163 enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
164 if (!ramp_delay) {
165 ramp_enable = 0;
166 break;
167 }
168
169 if (ramp_delay > s2mps11->ramp_delay34)
170 s2mps11->ramp_delay34 = ramp_delay;
171 else
172 ramp_delay = s2mps11->ramp_delay34;
173
174 ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
175 ramp_reg = S2MPS11_REG_RAMP;
176 break;
177 case S2MPS11_BUCK5:
178 s2mps11->ramp_delay5 = ramp_delay;
179 ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
180 break;
181 case S2MPS11_BUCK6:
182 enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
183 if (!ramp_delay) {
184 ramp_enable = 0;
185 break;
186 }
187
188 if (ramp_delay > s2mps11->ramp_delay16)
189 s2mps11->ramp_delay16 = ramp_delay;
190 else
191 ramp_delay = s2mps11->ramp_delay16;
192
193 ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
194 break;
195 case S2MPS11_BUCK7:
196 case S2MPS11_BUCK8:
197 case S2MPS11_BUCK10:
198 if (ramp_delay > s2mps11->ramp_delay7810)
199 s2mps11->ramp_delay7810 = ramp_delay;
200 else
201 ramp_delay = s2mps11->ramp_delay7810;
202
203 ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
204 break;
205 case S2MPS11_BUCK9:
206 s2mps11->ramp_delay9 = ramp_delay;
207 ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
208 break;
209 default:
210 return 0;
211 }
212
213 if (!ramp_enable)
214 goto ramp_disable;
215
216 /* Ramp delay can be enabled/disabled only for buck[2346] */
217 if ((rdev_get_id(rdev) >= S2MPS11_BUCK2 &&
218 rdev_get_id(rdev) <= S2MPS11_BUCK4) ||
219 rdev_get_id(rdev) == S2MPS11_BUCK6) {
220 ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
221 1 << enable_shift, 1 << enable_shift);
222 if (ret) {
223 dev_err(&rdev->dev, "failed to enable ramp rate\n");
224 return ret;
225 }
226 }
227
228 ramp_val = get_ramp_delay(ramp_delay);
229
230 return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
231 ramp_val << ramp_shift);
232
233 ramp_disable:
234 return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
235 1 << enable_shift, 0);
236 }
237
238 static struct regulator_ops s2mps11_ldo_ops = {
239 .list_voltage = regulator_list_voltage_linear,
240 .map_voltage = regulator_map_voltage_linear,
241 .is_enabled = regulator_is_enabled_regmap,
242 .enable = regulator_enable_regmap,
243 .disable = regulator_disable_regmap,
244 .get_voltage_sel = regulator_get_voltage_sel_regmap,
245 .set_voltage_sel = regulator_set_voltage_sel_regmap,
246 .set_voltage_time_sel = regulator_set_voltage_time_sel,
247 };
248
249 static struct regulator_ops s2mps11_buck_ops = {
250 .list_voltage = regulator_list_voltage_linear,
251 .map_voltage = regulator_map_voltage_linear,
252 .is_enabled = regulator_is_enabled_regmap,
253 .enable = regulator_enable_regmap,
254 .disable = regulator_disable_regmap,
255 .get_voltage_sel = regulator_get_voltage_sel_regmap,
256 .set_voltage_sel = regulator_set_voltage_sel_regmap,
257 .set_voltage_time_sel = s2mps11_regulator_set_voltage_time_sel,
258 .set_ramp_delay = s2mps11_set_ramp_delay,
259 };
260
261 #define regulator_desc_s2mps11_ldo(num, step) { \
262 .name = "LDO"#num, \
263 .id = S2MPS11_LDO##num, \
264 .ops = &s2mps11_ldo_ops, \
265 .type = REGULATOR_VOLTAGE, \
266 .owner = THIS_MODULE, \
267 .min_uV = MIN_800_MV, \
268 .uV_step = step, \
269 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
270 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
271 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
272 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
273 .enable_mask = S2MPS11_ENABLE_MASK \
274 }
275
276 #define regulator_desc_s2mps11_buck1_4(num) { \
277 .name = "BUCK"#num, \
278 .id = S2MPS11_BUCK##num, \
279 .ops = &s2mps11_buck_ops, \
280 .type = REGULATOR_VOLTAGE, \
281 .owner = THIS_MODULE, \
282 .min_uV = MIN_600_MV, \
283 .uV_step = STEP_6_25_MV, \
284 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
285 .ramp_delay = S2MPS11_RAMP_DELAY, \
286 .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
287 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
288 .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
289 .enable_mask = S2MPS11_ENABLE_MASK \
290 }
291
292 #define regulator_desc_s2mps11_buck5 { \
293 .name = "BUCK5", \
294 .id = S2MPS11_BUCK5, \
295 .ops = &s2mps11_buck_ops, \
296 .type = REGULATOR_VOLTAGE, \
297 .owner = THIS_MODULE, \
298 .min_uV = MIN_600_MV, \
299 .uV_step = STEP_6_25_MV, \
300 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
301 .ramp_delay = S2MPS11_RAMP_DELAY, \
302 .vsel_reg = S2MPS11_REG_B5CTRL2, \
303 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
304 .enable_reg = S2MPS11_REG_B5CTRL1, \
305 .enable_mask = S2MPS11_ENABLE_MASK \
306 }
307
308 #define regulator_desc_s2mps11_buck67810(num, min, step) { \
309 .name = "BUCK"#num, \
310 .id = S2MPS11_BUCK##num, \
311 .ops = &s2mps11_buck_ops, \
312 .type = REGULATOR_VOLTAGE, \
313 .owner = THIS_MODULE, \
314 .min_uV = min, \
315 .uV_step = step, \
316 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
317 .ramp_delay = S2MPS11_RAMP_DELAY, \
318 .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
319 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
320 .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
321 .enable_mask = S2MPS11_ENABLE_MASK \
322 }
323
324 #define regulator_desc_s2mps11_buck9 { \
325 .name = "BUCK9", \
326 .id = S2MPS11_BUCK9, \
327 .ops = &s2mps11_buck_ops, \
328 .type = REGULATOR_VOLTAGE, \
329 .owner = THIS_MODULE, \
330 .min_uV = MIN_3000_MV, \
331 .uV_step = STEP_25_MV, \
332 .n_voltages = S2MPS11_BUCK9_N_VOLTAGES, \
333 .ramp_delay = S2MPS11_RAMP_DELAY, \
334 .vsel_reg = S2MPS11_REG_B9CTRL2, \
335 .vsel_mask = S2MPS11_BUCK9_VSEL_MASK, \
336 .enable_reg = S2MPS11_REG_B9CTRL1, \
337 .enable_mask = S2MPS11_ENABLE_MASK \
338 }
339
340 static const struct regulator_desc s2mps11_regulators[] = {
341 regulator_desc_s2mps11_ldo(1, STEP_25_MV),
342 regulator_desc_s2mps11_ldo(2, STEP_50_MV),
343 regulator_desc_s2mps11_ldo(3, STEP_50_MV),
344 regulator_desc_s2mps11_ldo(4, STEP_50_MV),
345 regulator_desc_s2mps11_ldo(5, STEP_50_MV),
346 regulator_desc_s2mps11_ldo(6, STEP_25_MV),
347 regulator_desc_s2mps11_ldo(7, STEP_50_MV),
348 regulator_desc_s2mps11_ldo(8, STEP_50_MV),
349 regulator_desc_s2mps11_ldo(9, STEP_50_MV),
350 regulator_desc_s2mps11_ldo(10, STEP_50_MV),
351 regulator_desc_s2mps11_ldo(11, STEP_25_MV),
352 regulator_desc_s2mps11_ldo(12, STEP_50_MV),
353 regulator_desc_s2mps11_ldo(13, STEP_50_MV),
354 regulator_desc_s2mps11_ldo(14, STEP_50_MV),
355 regulator_desc_s2mps11_ldo(15, STEP_50_MV),
356 regulator_desc_s2mps11_ldo(16, STEP_50_MV),
357 regulator_desc_s2mps11_ldo(17, STEP_50_MV),
358 regulator_desc_s2mps11_ldo(18, STEP_50_MV),
359 regulator_desc_s2mps11_ldo(19, STEP_50_MV),
360 regulator_desc_s2mps11_ldo(20, STEP_50_MV),
361 regulator_desc_s2mps11_ldo(21, STEP_50_MV),
362 regulator_desc_s2mps11_ldo(22, STEP_25_MV),
363 regulator_desc_s2mps11_ldo(23, STEP_25_MV),
364 regulator_desc_s2mps11_ldo(24, STEP_50_MV),
365 regulator_desc_s2mps11_ldo(25, STEP_50_MV),
366 regulator_desc_s2mps11_ldo(26, STEP_50_MV),
367 regulator_desc_s2mps11_ldo(27, STEP_25_MV),
368 regulator_desc_s2mps11_ldo(28, STEP_50_MV),
369 regulator_desc_s2mps11_ldo(29, STEP_50_MV),
370 regulator_desc_s2mps11_ldo(30, STEP_50_MV),
371 regulator_desc_s2mps11_ldo(31, STEP_50_MV),
372 regulator_desc_s2mps11_ldo(32, STEP_50_MV),
373 regulator_desc_s2mps11_ldo(33, STEP_50_MV),
374 regulator_desc_s2mps11_ldo(34, STEP_50_MV),
375 regulator_desc_s2mps11_ldo(35, STEP_50_MV),
376 regulator_desc_s2mps11_ldo(36, STEP_50_MV),
377 regulator_desc_s2mps11_ldo(37, STEP_50_MV),
378 regulator_desc_s2mps11_ldo(38, STEP_50_MV),
379 regulator_desc_s2mps11_buck1_4(1),
380 regulator_desc_s2mps11_buck1_4(2),
381 regulator_desc_s2mps11_buck1_4(3),
382 regulator_desc_s2mps11_buck1_4(4),
383 regulator_desc_s2mps11_buck5,
384 regulator_desc_s2mps11_buck67810(6, MIN_600_MV, STEP_6_25_MV),
385 regulator_desc_s2mps11_buck67810(7, MIN_600_MV, STEP_6_25_MV),
386 regulator_desc_s2mps11_buck67810(8, MIN_600_MV, STEP_6_25_MV),
387 regulator_desc_s2mps11_buck9,
388 regulator_desc_s2mps11_buck67810(10, MIN_750_MV, STEP_12_5_MV),
389 };
390
391 static struct regulator_ops s2mps14_reg_ops;
392
393 #define regulator_desc_s2mps13_ldo(num, min, step, min_sel) { \
394 .name = "LDO"#num, \
395 .id = S2MPS13_LDO##num, \
396 .ops = &s2mps14_reg_ops, \
397 .type = REGULATOR_VOLTAGE, \
398 .owner = THIS_MODULE, \
399 .min_uV = min, \
400 .uV_step = step, \
401 .linear_min_sel = min_sel, \
402 .n_voltages = S2MPS14_LDO_N_VOLTAGES, \
403 .vsel_reg = S2MPS13_REG_L1CTRL + num - 1, \
404 .vsel_mask = S2MPS14_LDO_VSEL_MASK, \
405 .enable_reg = S2MPS13_REG_L1CTRL + num - 1, \
406 .enable_mask = S2MPS14_ENABLE_MASK \
407 }
408
409 #define regulator_desc_s2mps13_buck(num, min, step, min_sel) { \
410 .name = "BUCK"#num, \
411 .id = S2MPS13_BUCK##num, \
412 .ops = &s2mps14_reg_ops, \
413 .type = REGULATOR_VOLTAGE, \
414 .owner = THIS_MODULE, \
415 .min_uV = min, \
416 .uV_step = step, \
417 .linear_min_sel = min_sel, \
418 .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \
419 .ramp_delay = S2MPS13_BUCK_RAMP_DELAY, \
420 .vsel_reg = S2MPS13_REG_B1OUT + (num - 1) * 2, \
421 .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \
422 .enable_reg = S2MPS13_REG_B1CTRL + (num - 1) * 2, \
423 .enable_mask = S2MPS14_ENABLE_MASK \
424 }
425
426 #define regulator_desc_s2mps13_buck7(num, min, step, min_sel) { \
427 .name = "BUCK"#num, \
428 .id = S2MPS13_BUCK##num, \
429 .ops = &s2mps14_reg_ops, \
430 .type = REGULATOR_VOLTAGE, \
431 .owner = THIS_MODULE, \
432 .min_uV = min, \
433 .uV_step = step, \
434 .linear_min_sel = min_sel, \
435 .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \
436 .ramp_delay = S2MPS13_BUCK_RAMP_DELAY, \
437 .vsel_reg = S2MPS13_REG_B1OUT + (num) * 2 - 1, \
438 .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \
439 .enable_reg = S2MPS13_REG_B1CTRL + (num - 1) * 2, \
440 .enable_mask = S2MPS14_ENABLE_MASK \
441 }
442
443 #define regulator_desc_s2mps13_buck8_10(num, min, step, min_sel) { \
444 .name = "BUCK"#num, \
445 .id = S2MPS13_BUCK##num, \
446 .ops = &s2mps14_reg_ops, \
447 .type = REGULATOR_VOLTAGE, \
448 .owner = THIS_MODULE, \
449 .min_uV = min, \
450 .uV_step = step, \
451 .linear_min_sel = min_sel, \
452 .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \
453 .ramp_delay = S2MPS13_BUCK_RAMP_DELAY, \
454 .vsel_reg = S2MPS13_REG_B1OUT + (num) * 2 - 1, \
455 .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \
456 .enable_reg = S2MPS13_REG_B1CTRL + (num) * 2 - 1, \
457 .enable_mask = S2MPS14_ENABLE_MASK \
458 }
459
460 static const struct regulator_desc s2mps13_regulators[] = {
461 regulator_desc_s2mps13_ldo(1, MIN_800_MV, STEP_12_5_MV, 0x00),
462 regulator_desc_s2mps13_ldo(2, MIN_1400_MV, STEP_50_MV, 0x0C),
463 regulator_desc_s2mps13_ldo(3, MIN_1000_MV, STEP_25_MV, 0x08),
464 regulator_desc_s2mps13_ldo(4, MIN_800_MV, STEP_12_5_MV, 0x00),
465 regulator_desc_s2mps13_ldo(5, MIN_800_MV, STEP_12_5_MV, 0x00),
466 regulator_desc_s2mps13_ldo(6, MIN_800_MV, STEP_12_5_MV, 0x00),
467 regulator_desc_s2mps13_ldo(7, MIN_1000_MV, STEP_25_MV, 0x08),
468 regulator_desc_s2mps13_ldo(8, MIN_1000_MV, STEP_25_MV, 0x08),
469 regulator_desc_s2mps13_ldo(9, MIN_1000_MV, STEP_25_MV, 0x08),
470 regulator_desc_s2mps13_ldo(10, MIN_1400_MV, STEP_50_MV, 0x0C),
471 regulator_desc_s2mps13_ldo(11, MIN_800_MV, STEP_25_MV, 0x10),
472 regulator_desc_s2mps13_ldo(12, MIN_800_MV, STEP_25_MV, 0x10),
473 regulator_desc_s2mps13_ldo(13, MIN_800_MV, STEP_25_MV, 0x10),
474 regulator_desc_s2mps13_ldo(14, MIN_800_MV, STEP_12_5_MV, 0x00),
475 regulator_desc_s2mps13_ldo(15, MIN_800_MV, STEP_12_5_MV, 0x00),
476 regulator_desc_s2mps13_ldo(16, MIN_1400_MV, STEP_50_MV, 0x0C),
477 regulator_desc_s2mps13_ldo(17, MIN_1400_MV, STEP_50_MV, 0x0C),
478 regulator_desc_s2mps13_ldo(18, MIN_1000_MV, STEP_25_MV, 0x08),
479 regulator_desc_s2mps13_ldo(19, MIN_1000_MV, STEP_25_MV, 0x08),
480 regulator_desc_s2mps13_ldo(20, MIN_1400_MV, STEP_50_MV, 0x0C),
481 regulator_desc_s2mps13_ldo(21, MIN_1000_MV, STEP_25_MV, 0x08),
482 regulator_desc_s2mps13_ldo(22, MIN_1000_MV, STEP_25_MV, 0x08),
483 regulator_desc_s2mps13_ldo(23, MIN_800_MV, STEP_12_5_MV, 0x00),
484 regulator_desc_s2mps13_ldo(24, MIN_800_MV, STEP_12_5_MV, 0x00),
485 regulator_desc_s2mps13_ldo(25, MIN_1400_MV, STEP_50_MV, 0x0C),
486 regulator_desc_s2mps13_ldo(26, MIN_1400_MV, STEP_50_MV, 0x0C),
487 regulator_desc_s2mps13_ldo(27, MIN_1400_MV, STEP_50_MV, 0x0C),
488 regulator_desc_s2mps13_ldo(28, MIN_1000_MV, STEP_25_MV, 0x08),
489 regulator_desc_s2mps13_ldo(29, MIN_1400_MV, STEP_50_MV, 0x0C),
490 regulator_desc_s2mps13_ldo(30, MIN_1400_MV, STEP_50_MV, 0x0C),
491 regulator_desc_s2mps13_ldo(31, MIN_1000_MV, STEP_25_MV, 0x08),
492 regulator_desc_s2mps13_ldo(32, MIN_1000_MV, STEP_25_MV, 0x08),
493 regulator_desc_s2mps13_ldo(33, MIN_1400_MV, STEP_50_MV, 0x0C),
494 regulator_desc_s2mps13_ldo(34, MIN_1000_MV, STEP_25_MV, 0x08),
495 regulator_desc_s2mps13_ldo(35, MIN_1400_MV, STEP_50_MV, 0x0C),
496 regulator_desc_s2mps13_ldo(36, MIN_800_MV, STEP_12_5_MV, 0x00),
497 regulator_desc_s2mps13_ldo(37, MIN_1000_MV, STEP_25_MV, 0x08),
498 regulator_desc_s2mps13_ldo(38, MIN_1400_MV, STEP_50_MV, 0x0C),
499 regulator_desc_s2mps13_ldo(39, MIN_1000_MV, STEP_25_MV, 0x08),
500 regulator_desc_s2mps13_ldo(40, MIN_1400_MV, STEP_50_MV, 0x0C),
501 regulator_desc_s2mps13_buck(1, MIN_500_MV, STEP_6_25_MV, 0x10),
502 regulator_desc_s2mps13_buck(2, MIN_500_MV, STEP_6_25_MV, 0x10),
503 regulator_desc_s2mps13_buck(3, MIN_500_MV, STEP_6_25_MV, 0x10),
504 regulator_desc_s2mps13_buck(4, MIN_500_MV, STEP_6_25_MV, 0x10),
505 regulator_desc_s2mps13_buck(5, MIN_500_MV, STEP_6_25_MV, 0x10),
506 regulator_desc_s2mps13_buck(6, MIN_500_MV, STEP_6_25_MV, 0x10),
507 regulator_desc_s2mps13_buck7(7, MIN_500_MV, STEP_6_25_MV, 0x10),
508 regulator_desc_s2mps13_buck8_10(8, MIN_1000_MV, STEP_12_5_MV, 0x20),
509 regulator_desc_s2mps13_buck8_10(9, MIN_1000_MV, STEP_12_5_MV, 0x20),
510 regulator_desc_s2mps13_buck8_10(10, MIN_500_MV, STEP_6_25_MV, 0x10),
511 };
512
s2mps14_regulator_enable(struct regulator_dev * rdev)513 static int s2mps14_regulator_enable(struct regulator_dev *rdev)
514 {
515 struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
516 unsigned int val;
517
518 switch (s2mps11->dev_type) {
519 case S2MPS13X:
520 case S2MPS14X:
521 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
522 val = S2MPS14_ENABLE_SUSPEND;
523 else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
524 val = S2MPS14_ENABLE_EXT_CONTROL;
525 else
526 val = rdev->desc->enable_mask;
527 break;
528 case S2MPU02:
529 if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
530 val = S2MPU02_ENABLE_SUSPEND;
531 else
532 val = rdev->desc->enable_mask;
533 break;
534 default:
535 return -EINVAL;
536 }
537
538 return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
539 rdev->desc->enable_mask, val);
540 }
541
s2mps14_regulator_set_suspend_disable(struct regulator_dev * rdev)542 static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
543 {
544 int ret;
545 unsigned int val, state;
546 struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
547 int rdev_id = rdev_get_id(rdev);
548
549 /* Below LDO should be always on or does not support suspend mode. */
550 switch (s2mps11->dev_type) {
551 case S2MPS13X:
552 case S2MPS14X:
553 switch (rdev_id) {
554 case S2MPS14_LDO3:
555 return 0;
556 default:
557 state = S2MPS14_ENABLE_SUSPEND;
558 break;
559 }
560 break;
561 case S2MPU02:
562 switch (rdev_id) {
563 case S2MPU02_LDO13:
564 case S2MPU02_LDO14:
565 case S2MPU02_LDO15:
566 case S2MPU02_LDO17:
567 case S2MPU02_BUCK7:
568 state = S2MPU02_DISABLE_SUSPEND;
569 break;
570 default:
571 state = S2MPU02_ENABLE_SUSPEND;
572 break;
573 }
574 break;
575 default:
576 return -EINVAL;
577 }
578
579 ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
580 if (ret < 0)
581 return ret;
582
583 set_bit(rdev_get_id(rdev), s2mps11->suspend_state);
584 /*
585 * Don't enable suspend mode if regulator is already disabled because
586 * this would effectively for a short time turn on the regulator after
587 * resuming.
588 * However we still want to toggle the suspend_state bit for regulator
589 * in case if it got enabled before suspending the system.
590 */
591 if (!(val & rdev->desc->enable_mask))
592 return 0;
593
594 return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
595 rdev->desc->enable_mask, state);
596 }
597
598 static struct regulator_ops s2mps14_reg_ops = {
599 .list_voltage = regulator_list_voltage_linear,
600 .map_voltage = regulator_map_voltage_linear,
601 .is_enabled = regulator_is_enabled_regmap,
602 .enable = s2mps14_regulator_enable,
603 .disable = regulator_disable_regmap,
604 .get_voltage_sel = regulator_get_voltage_sel_regmap,
605 .set_voltage_sel = regulator_set_voltage_sel_regmap,
606 .set_voltage_time_sel = regulator_set_voltage_time_sel,
607 .set_suspend_disable = s2mps14_regulator_set_suspend_disable,
608 };
609
610 #define regulator_desc_s2mps14_ldo(num, min, step) { \
611 .name = "LDO"#num, \
612 .id = S2MPS14_LDO##num, \
613 .ops = &s2mps14_reg_ops, \
614 .type = REGULATOR_VOLTAGE, \
615 .owner = THIS_MODULE, \
616 .min_uV = min, \
617 .uV_step = step, \
618 .n_voltages = S2MPS14_LDO_N_VOLTAGES, \
619 .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \
620 .vsel_mask = S2MPS14_LDO_VSEL_MASK, \
621 .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \
622 .enable_mask = S2MPS14_ENABLE_MASK \
623 }
624
625 #define regulator_desc_s2mps14_buck(num, min, step, min_sel) { \
626 .name = "BUCK"#num, \
627 .id = S2MPS14_BUCK##num, \
628 .ops = &s2mps14_reg_ops, \
629 .type = REGULATOR_VOLTAGE, \
630 .owner = THIS_MODULE, \
631 .min_uV = min, \
632 .uV_step = step, \
633 .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \
634 .linear_min_sel = min_sel, \
635 .ramp_delay = S2MPS14_BUCK_RAMP_DELAY, \
636 .vsel_reg = S2MPS14_REG_B1CTRL2 + (num - 1) * 2, \
637 .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \
638 .enable_reg = S2MPS14_REG_B1CTRL1 + (num - 1) * 2, \
639 .enable_mask = S2MPS14_ENABLE_MASK \
640 }
641
642 static const struct regulator_desc s2mps14_regulators[] = {
643 regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
644 regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
645 regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
646 regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
647 regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
648 regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
649 regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
650 regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
651 regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
652 regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
653 regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
654 regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
655 regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
656 regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
657 regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
658 regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
659 regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
660 regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
661 regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
662 regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
663 regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
664 regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
665 regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
666 regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
667 regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
668 regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV,
669 S2MPS14_BUCK1235_START_SEL),
670 regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV,
671 S2MPS14_BUCK1235_START_SEL),
672 regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV,
673 S2MPS14_BUCK1235_START_SEL),
674 regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV,
675 S2MPS14_BUCK4_START_SEL),
676 regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV,
677 S2MPS14_BUCK1235_START_SEL),
678 };
679
s2mps14_pmic_enable_ext_control(struct s2mps11_info * s2mps11,struct regulator_dev * rdev)680 static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
681 struct regulator_dev *rdev)
682 {
683 return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
684 rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
685 }
686
s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device * pdev,struct of_regulator_match * rdata,struct s2mps11_info * s2mps11)687 static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
688 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
689 {
690 int *gpio = s2mps11->ext_control_gpio;
691 unsigned int i;
692 unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
693 S2MPS14_LDO12 };
694
695 for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
696 unsigned int reg = valid_regulators[i];
697
698 if (!rdata[reg].init_data || !rdata[reg].of_node)
699 continue;
700
701 gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
702 "samsung,ext-control-gpios", 0);
703 if (gpio_is_valid(gpio[reg]))
704 dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
705 gpio[reg], reg, rdata[reg].name);
706 }
707 }
708
s2mps11_pmic_dt_parse(struct platform_device * pdev,struct of_regulator_match * rdata,struct s2mps11_info * s2mps11)709 static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
710 struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
711 {
712 struct device_node *reg_np;
713
714 reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
715 if (!reg_np) {
716 dev_err(&pdev->dev, "could not find regulators sub-node\n");
717 return -EINVAL;
718 }
719
720 of_regulator_match(&pdev->dev, reg_np, rdata, s2mps11->rdev_num);
721 if (s2mps11->dev_type == S2MPS14X)
722 s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
723
724 of_node_put(reg_np);
725
726 return 0;
727 }
728
s2mpu02_set_ramp_delay(struct regulator_dev * rdev,int ramp_delay)729 static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
730 {
731 unsigned int ramp_val, ramp_shift, ramp_reg;
732
733 switch (rdev_get_id(rdev)) {
734 case S2MPU02_BUCK1:
735 ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
736 break;
737 case S2MPU02_BUCK2:
738 ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
739 break;
740 case S2MPU02_BUCK3:
741 ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
742 break;
743 case S2MPU02_BUCK4:
744 ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
745 break;
746 default:
747 return 0;
748 }
749 ramp_reg = S2MPU02_REG_RAMP1;
750 ramp_val = get_ramp_delay(ramp_delay);
751
752 return regmap_update_bits(rdev->regmap, ramp_reg,
753 S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
754 ramp_val << ramp_shift);
755 }
756
757 static struct regulator_ops s2mpu02_ldo_ops = {
758 .list_voltage = regulator_list_voltage_linear,
759 .map_voltage = regulator_map_voltage_linear,
760 .is_enabled = regulator_is_enabled_regmap,
761 .enable = s2mps14_regulator_enable,
762 .disable = regulator_disable_regmap,
763 .get_voltage_sel = regulator_get_voltage_sel_regmap,
764 .set_voltage_sel = regulator_set_voltage_sel_regmap,
765 .set_voltage_time_sel = regulator_set_voltage_time_sel,
766 .set_suspend_disable = s2mps14_regulator_set_suspend_disable,
767 };
768
769 static struct regulator_ops s2mpu02_buck_ops = {
770 .list_voltage = regulator_list_voltage_linear,
771 .map_voltage = regulator_map_voltage_linear,
772 .is_enabled = regulator_is_enabled_regmap,
773 .enable = s2mps14_regulator_enable,
774 .disable = regulator_disable_regmap,
775 .get_voltage_sel = regulator_get_voltage_sel_regmap,
776 .set_voltage_sel = regulator_set_voltage_sel_regmap,
777 .set_voltage_time_sel = regulator_set_voltage_time_sel,
778 .set_suspend_disable = s2mps14_regulator_set_suspend_disable,
779 .set_ramp_delay = s2mpu02_set_ramp_delay,
780 };
781
782 #define regulator_desc_s2mpu02_ldo1(num) { \
783 .name = "LDO"#num, \
784 .id = S2MPU02_LDO##num, \
785 .ops = &s2mpu02_ldo_ops, \
786 .type = REGULATOR_VOLTAGE, \
787 .owner = THIS_MODULE, \
788 .min_uV = S2MPU02_LDO_MIN_900MV, \
789 .uV_step = S2MPU02_LDO_STEP_12_5MV, \
790 .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
791 .n_voltages = S2MPU02_LDO_N_VOLTAGES, \
792 .vsel_reg = S2MPU02_REG_L1CTRL, \
793 .vsel_mask = S2MPU02_LDO_VSEL_MASK, \
794 .enable_reg = S2MPU02_REG_L1CTRL, \
795 .enable_mask = S2MPU02_ENABLE_MASK \
796 }
797 #define regulator_desc_s2mpu02_ldo2(num) { \
798 .name = "LDO"#num, \
799 .id = S2MPU02_LDO##num, \
800 .ops = &s2mpu02_ldo_ops, \
801 .type = REGULATOR_VOLTAGE, \
802 .owner = THIS_MODULE, \
803 .min_uV = S2MPU02_LDO_MIN_1050MV, \
804 .uV_step = S2MPU02_LDO_STEP_25MV, \
805 .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
806 .n_voltages = S2MPU02_LDO_N_VOLTAGES, \
807 .vsel_reg = S2MPU02_REG_L2CTRL1, \
808 .vsel_mask = S2MPU02_LDO_VSEL_MASK, \
809 .enable_reg = S2MPU02_REG_L2CTRL1, \
810 .enable_mask = S2MPU02_ENABLE_MASK \
811 }
812 #define regulator_desc_s2mpu02_ldo3(num) { \
813 .name = "LDO"#num, \
814 .id = S2MPU02_LDO##num, \
815 .ops = &s2mpu02_ldo_ops, \
816 .type = REGULATOR_VOLTAGE, \
817 .owner = THIS_MODULE, \
818 .min_uV = S2MPU02_LDO_MIN_900MV, \
819 .uV_step = S2MPU02_LDO_STEP_12_5MV, \
820 .linear_min_sel = S2MPU02_LDO_GROUP1_START_SEL, \
821 .n_voltages = S2MPU02_LDO_N_VOLTAGES, \
822 .vsel_reg = S2MPU02_REG_L3CTRL + num - 3, \
823 .vsel_mask = S2MPU02_LDO_VSEL_MASK, \
824 .enable_reg = S2MPU02_REG_L3CTRL + num - 3, \
825 .enable_mask = S2MPU02_ENABLE_MASK \
826 }
827 #define regulator_desc_s2mpu02_ldo4(num) { \
828 .name = "LDO"#num, \
829 .id = S2MPU02_LDO##num, \
830 .ops = &s2mpu02_ldo_ops, \
831 .type = REGULATOR_VOLTAGE, \
832 .owner = THIS_MODULE, \
833 .min_uV = S2MPU02_LDO_MIN_1050MV, \
834 .uV_step = S2MPU02_LDO_STEP_25MV, \
835 .linear_min_sel = S2MPU02_LDO_GROUP2_START_SEL, \
836 .n_voltages = S2MPU02_LDO_N_VOLTAGES, \
837 .vsel_reg = S2MPU02_REG_L3CTRL + num - 3, \
838 .vsel_mask = S2MPU02_LDO_VSEL_MASK, \
839 .enable_reg = S2MPU02_REG_L3CTRL + num - 3, \
840 .enable_mask = S2MPU02_ENABLE_MASK \
841 }
842 #define regulator_desc_s2mpu02_ldo5(num) { \
843 .name = "LDO"#num, \
844 .id = S2MPU02_LDO##num, \
845 .ops = &s2mpu02_ldo_ops, \
846 .type = REGULATOR_VOLTAGE, \
847 .owner = THIS_MODULE, \
848 .min_uV = S2MPU02_LDO_MIN_1600MV, \
849 .uV_step = S2MPU02_LDO_STEP_50MV, \
850 .linear_min_sel = S2MPU02_LDO_GROUP3_START_SEL, \
851 .n_voltages = S2MPU02_LDO_N_VOLTAGES, \
852 .vsel_reg = S2MPU02_REG_L3CTRL + num - 3, \
853 .vsel_mask = S2MPU02_LDO_VSEL_MASK, \
854 .enable_reg = S2MPU02_REG_L3CTRL + num - 3, \
855 .enable_mask = S2MPU02_ENABLE_MASK \
856 }
857
858 #define regulator_desc_s2mpu02_buck1234(num) { \
859 .name = "BUCK"#num, \
860 .id = S2MPU02_BUCK##num, \
861 .ops = &s2mpu02_buck_ops, \
862 .type = REGULATOR_VOLTAGE, \
863 .owner = THIS_MODULE, \
864 .min_uV = S2MPU02_BUCK1234_MIN_600MV, \
865 .uV_step = S2MPU02_BUCK1234_STEP_6_25MV, \
866 .n_voltages = S2MPU02_BUCK_N_VOLTAGES, \
867 .linear_min_sel = S2MPU02_BUCK1234_START_SEL, \
868 .ramp_delay = S2MPU02_BUCK_RAMP_DELAY, \
869 .vsel_reg = S2MPU02_REG_B1CTRL2 + (num - 1) * 2, \
870 .vsel_mask = S2MPU02_BUCK_VSEL_MASK, \
871 .enable_reg = S2MPU02_REG_B1CTRL1 + (num - 1) * 2, \
872 .enable_mask = S2MPU02_ENABLE_MASK \
873 }
874 #define regulator_desc_s2mpu02_buck5(num) { \
875 .name = "BUCK"#num, \
876 .id = S2MPU02_BUCK##num, \
877 .ops = &s2mpu02_ldo_ops, \
878 .type = REGULATOR_VOLTAGE, \
879 .owner = THIS_MODULE, \
880 .min_uV = S2MPU02_BUCK5_MIN_1081_25MV, \
881 .uV_step = S2MPU02_BUCK5_STEP_6_25MV, \
882 .n_voltages = S2MPU02_BUCK_N_VOLTAGES, \
883 .linear_min_sel = S2MPU02_BUCK5_START_SEL, \
884 .ramp_delay = S2MPU02_BUCK_RAMP_DELAY, \
885 .vsel_reg = S2MPU02_REG_B5CTRL2, \
886 .vsel_mask = S2MPU02_BUCK_VSEL_MASK, \
887 .enable_reg = S2MPU02_REG_B5CTRL1, \
888 .enable_mask = S2MPU02_ENABLE_MASK \
889 }
890 #define regulator_desc_s2mpu02_buck6(num) { \
891 .name = "BUCK"#num, \
892 .id = S2MPU02_BUCK##num, \
893 .ops = &s2mpu02_ldo_ops, \
894 .type = REGULATOR_VOLTAGE, \
895 .owner = THIS_MODULE, \
896 .min_uV = S2MPU02_BUCK6_MIN_1700MV, \
897 .uV_step = S2MPU02_BUCK6_STEP_2_50MV, \
898 .n_voltages = S2MPU02_BUCK_N_VOLTAGES, \
899 .linear_min_sel = S2MPU02_BUCK6_START_SEL, \
900 .ramp_delay = S2MPU02_BUCK_RAMP_DELAY, \
901 .vsel_reg = S2MPU02_REG_B6CTRL2, \
902 .vsel_mask = S2MPU02_BUCK_VSEL_MASK, \
903 .enable_reg = S2MPU02_REG_B6CTRL1, \
904 .enable_mask = S2MPU02_ENABLE_MASK \
905 }
906 #define regulator_desc_s2mpu02_buck7(num) { \
907 .name = "BUCK"#num, \
908 .id = S2MPU02_BUCK##num, \
909 .ops = &s2mpu02_ldo_ops, \
910 .type = REGULATOR_VOLTAGE, \
911 .owner = THIS_MODULE, \
912 .min_uV = S2MPU02_BUCK7_MIN_900MV, \
913 .uV_step = S2MPU02_BUCK7_STEP_6_25MV, \
914 .n_voltages = S2MPU02_BUCK_N_VOLTAGES, \
915 .linear_min_sel = S2MPU02_BUCK7_START_SEL, \
916 .ramp_delay = S2MPU02_BUCK_RAMP_DELAY, \
917 .vsel_reg = S2MPU02_REG_B7CTRL2, \
918 .vsel_mask = S2MPU02_BUCK_VSEL_MASK, \
919 .enable_reg = S2MPU02_REG_B7CTRL1, \
920 .enable_mask = S2MPU02_ENABLE_MASK \
921 }
922
923 static const struct regulator_desc s2mpu02_regulators[] = {
924 regulator_desc_s2mpu02_ldo1(1),
925 regulator_desc_s2mpu02_ldo2(2),
926 regulator_desc_s2mpu02_ldo4(3),
927 regulator_desc_s2mpu02_ldo5(4),
928 regulator_desc_s2mpu02_ldo4(5),
929 regulator_desc_s2mpu02_ldo3(6),
930 regulator_desc_s2mpu02_ldo3(7),
931 regulator_desc_s2mpu02_ldo4(8),
932 regulator_desc_s2mpu02_ldo5(9),
933 regulator_desc_s2mpu02_ldo3(10),
934 regulator_desc_s2mpu02_ldo4(11),
935 regulator_desc_s2mpu02_ldo5(12),
936 regulator_desc_s2mpu02_ldo5(13),
937 regulator_desc_s2mpu02_ldo5(14),
938 regulator_desc_s2mpu02_ldo5(15),
939 regulator_desc_s2mpu02_ldo5(16),
940 regulator_desc_s2mpu02_ldo4(17),
941 regulator_desc_s2mpu02_ldo5(18),
942 regulator_desc_s2mpu02_ldo3(19),
943 regulator_desc_s2mpu02_ldo4(20),
944 regulator_desc_s2mpu02_ldo5(21),
945 regulator_desc_s2mpu02_ldo5(22),
946 regulator_desc_s2mpu02_ldo5(23),
947 regulator_desc_s2mpu02_ldo4(24),
948 regulator_desc_s2mpu02_ldo5(25),
949 regulator_desc_s2mpu02_ldo4(26),
950 regulator_desc_s2mpu02_ldo5(27),
951 regulator_desc_s2mpu02_ldo5(28),
952 regulator_desc_s2mpu02_buck1234(1),
953 regulator_desc_s2mpu02_buck1234(2),
954 regulator_desc_s2mpu02_buck1234(3),
955 regulator_desc_s2mpu02_buck1234(4),
956 regulator_desc_s2mpu02_buck5(5),
957 regulator_desc_s2mpu02_buck6(6),
958 regulator_desc_s2mpu02_buck7(7),
959 };
960
s2mps11_pmic_probe(struct platform_device * pdev)961 static int s2mps11_pmic_probe(struct platform_device *pdev)
962 {
963 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
964 struct sec_platform_data *pdata = NULL;
965 struct of_regulator_match *rdata = NULL;
966 struct regulator_config config = { };
967 struct s2mps11_info *s2mps11;
968 int i, ret = 0;
969 const struct regulator_desc *regulators;
970
971 s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
972 GFP_KERNEL);
973 if (!s2mps11)
974 return -ENOMEM;
975
976 s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
977 switch (s2mps11->dev_type) {
978 case S2MPS11X:
979 s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
980 regulators = s2mps11_regulators;
981 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
982 break;
983 case S2MPS13X:
984 s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
985 regulators = s2mps13_regulators;
986 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
987 break;
988 case S2MPS14X:
989 s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
990 regulators = s2mps14_regulators;
991 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
992 break;
993 case S2MPU02:
994 s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
995 regulators = s2mpu02_regulators;
996 BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
997 break;
998 default:
999 dev_err(&pdev->dev, "Invalid device type: %u\n",
1000 s2mps11->dev_type);
1001 return -EINVAL;
1002 }
1003
1004 s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
1005 sizeof(*s2mps11->ext_control_gpio) * s2mps11->rdev_num,
1006 GFP_KERNEL);
1007 if (!s2mps11->ext_control_gpio)
1008 return -ENOMEM;
1009 /*
1010 * 0 is a valid GPIO so initialize all GPIO-s to negative value
1011 * to indicate that external control won't be used for this regulator.
1012 */
1013 for (i = 0; i < s2mps11->rdev_num; i++)
1014 s2mps11->ext_control_gpio[i] = -EINVAL;
1015
1016 if (!iodev->dev->of_node) {
1017 if (iodev->pdata) {
1018 pdata = iodev->pdata;
1019 goto common_reg;
1020 } else {
1021 dev_err(pdev->dev.parent,
1022 "Platform data or DT node not supplied\n");
1023 return -ENODEV;
1024 }
1025 }
1026
1027 rdata = kzalloc(sizeof(*rdata) * s2mps11->rdev_num, GFP_KERNEL);
1028 if (!rdata)
1029 return -ENOMEM;
1030
1031 for (i = 0; i < s2mps11->rdev_num; i++)
1032 rdata[i].name = regulators[i].name;
1033
1034 ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11);
1035 if (ret)
1036 goto out;
1037
1038 common_reg:
1039 platform_set_drvdata(pdev, s2mps11);
1040
1041 config.dev = &pdev->dev;
1042 config.regmap = iodev->regmap_pmic;
1043 config.driver_data = s2mps11;
1044 config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
1045 config.ena_gpio_initialized = true;
1046 for (i = 0; i < s2mps11->rdev_num; i++) {
1047 struct regulator_dev *regulator;
1048
1049 if (pdata) {
1050 config.init_data = pdata->regulators[i].initdata;
1051 config.of_node = pdata->regulators[i].reg_node;
1052 } else {
1053 config.init_data = rdata[i].init_data;
1054 config.of_node = rdata[i].of_node;
1055 }
1056 config.ena_gpio = s2mps11->ext_control_gpio[i];
1057
1058 regulator = devm_regulator_register(&pdev->dev,
1059 ®ulators[i], &config);
1060 if (IS_ERR(regulator)) {
1061 ret = PTR_ERR(regulator);
1062 dev_err(&pdev->dev, "regulator init failed for %d\n",
1063 i);
1064 goto out;
1065 }
1066
1067 if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
1068 ret = s2mps14_pmic_enable_ext_control(s2mps11,
1069 regulator);
1070 if (ret < 0) {
1071 dev_err(&pdev->dev,
1072 "failed to enable GPIO control over %s: %d\n",
1073 regulator->desc->name, ret);
1074 goto out;
1075 }
1076 }
1077 }
1078
1079 out:
1080 kfree(rdata);
1081
1082 return ret;
1083 }
1084
1085 static const struct platform_device_id s2mps11_pmic_id[] = {
1086 { "s2mps11-pmic", S2MPS11X},
1087 { "s2mps13-pmic", S2MPS13X},
1088 { "s2mps14-pmic", S2MPS14X},
1089 { "s2mpu02-pmic", S2MPU02},
1090 { },
1091 };
1092 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
1093
1094 static struct platform_driver s2mps11_pmic_driver = {
1095 .driver = {
1096 .name = "s2mps11-pmic",
1097 },
1098 .probe = s2mps11_pmic_probe,
1099 .id_table = s2mps11_pmic_id,
1100 };
1101
s2mps11_pmic_init(void)1102 static int __init s2mps11_pmic_init(void)
1103 {
1104 return platform_driver_register(&s2mps11_pmic_driver);
1105 }
1106 subsys_initcall(s2mps11_pmic_init);
1107
s2mps11_pmic_exit(void)1108 static void __exit s2mps11_pmic_exit(void)
1109 {
1110 platform_driver_unregister(&s2mps11_pmic_driver);
1111 }
1112 module_exit(s2mps11_pmic_exit);
1113
1114 /* Module information */
1115 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
1116 MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14/S2MPU02 Regulator Driver");
1117 MODULE_LICENSE("GPL");
1118