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1// SPDX-License-Identifier: GPL-2.0+
2//
3// Copyright (c) 2013 Samsung Electronics Co., Ltd
4// http://www.samsung.com
5
6#include <linux/bug.h>
7#include <linux/err.h>
8#include <linux/gpio.h>
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <linux/of.h>
12#include <linux/regmap.h>
13#include <linux/platform_device.h>
14#include <linux/regulator/driver.h>
15#include <linux/regulator/machine.h>
16#include <linux/regulator/of_regulator.h>
17#include <linux/mfd/samsung/core.h>
18#include <linux/mfd/samsung/s2mpa01.h>
19
20struct s2mpa01_info {
21 int ramp_delay24;
22 int ramp_delay3;
23 int ramp_delay5;
24 int ramp_delay16;
25 int ramp_delay7;
26 int ramp_delay8910;
27};
28
29static int get_ramp_delay(int ramp_delay)
30{
31 unsigned char cnt = 0;
32
33 ramp_delay /= 6250;
34
35 while (true) {
36 ramp_delay = ramp_delay >> 1;
37 if (ramp_delay == 0)
38 break;
39 cnt++;
40 }
41
42 if (cnt > 3)
43 cnt = 3;
44
45 return cnt;
46}
47
48static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
49 unsigned int old_selector,
50 unsigned int new_selector)
51{
52 struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
53 unsigned int ramp_delay = 0;
54 int old_volt, new_volt;
55
56 switch (rdev_get_id(rdev)) {
57 case S2MPA01_BUCK2:
58 case S2MPA01_BUCK4:
59 ramp_delay = s2mpa01->ramp_delay24;
60 break;
61 case S2MPA01_BUCK3:
62 ramp_delay = s2mpa01->ramp_delay3;
63 break;
64 case S2MPA01_BUCK5:
65 ramp_delay = s2mpa01->ramp_delay5;
66 break;
67 case S2MPA01_BUCK1:
68 case S2MPA01_BUCK6:
69 ramp_delay = s2mpa01->ramp_delay16;
70 break;
71 case S2MPA01_BUCK7:
72 ramp_delay = s2mpa01->ramp_delay7;
73 break;
74 case S2MPA01_BUCK8:
75 case S2MPA01_BUCK9:
76 case S2MPA01_BUCK10:
77 ramp_delay = s2mpa01->ramp_delay8910;
78 break;
79 }
80
81 if (ramp_delay == 0)
82 ramp_delay = rdev->desc->ramp_delay;
83
84 old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
85 new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
86
87 return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
88}
89
90static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
91{
92 struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
93 unsigned int ramp_val, ramp_shift, ramp_reg = S2MPA01_REG_RAMP2;
94 unsigned int ramp_enable = 1, enable_shift = 0;
95 int ret;
96
97 switch (rdev_get_id(rdev)) {
98 case S2MPA01_BUCK1:
99 enable_shift = S2MPA01_BUCK1_RAMP_EN_SHIFT;
100 if (!ramp_delay) {
101 ramp_enable = 0;
102 break;
103 }
104
105 if (ramp_delay > s2mpa01->ramp_delay16)
106 s2mpa01->ramp_delay16 = ramp_delay;
107 else
108 ramp_delay = s2mpa01->ramp_delay16;
109
110 ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
111 break;
112 case S2MPA01_BUCK2:
113 enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
114 if (!ramp_delay) {
115 ramp_enable = 0;
116 break;
117 }
118
119 if (ramp_delay > s2mpa01->ramp_delay24)
120 s2mpa01->ramp_delay24 = ramp_delay;
121 else
122 ramp_delay = s2mpa01->ramp_delay24;
123
124 ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
125 ramp_reg = S2MPA01_REG_RAMP1;
126 break;
127 case S2MPA01_BUCK3:
128 enable_shift = S2MPA01_BUCK3_RAMP_EN_SHIFT;
129 if (!ramp_delay) {
130 ramp_enable = 0;
131 break;
132 }
133
134 s2mpa01->ramp_delay3 = ramp_delay;
135 ramp_shift = S2MPA01_BUCK3_RAMP_SHIFT;
136 ramp_reg = S2MPA01_REG_RAMP1;
137 break;
138 case S2MPA01_BUCK4:
139 enable_shift = S2MPA01_BUCK4_RAMP_EN_SHIFT;
140 if (!ramp_delay) {
141 ramp_enable = 0;
142 break;
143 }
144
145 if (ramp_delay > s2mpa01->ramp_delay24)
146 s2mpa01->ramp_delay24 = ramp_delay;
147 else
148 ramp_delay = s2mpa01->ramp_delay24;
149
150 ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
151 ramp_reg = S2MPA01_REG_RAMP1;
152 break;
153 case S2MPA01_BUCK5:
154 s2mpa01->ramp_delay5 = ramp_delay;
155 ramp_shift = S2MPA01_BUCK5_RAMP_SHIFT;
156 break;
157 case S2MPA01_BUCK6:
158 if (ramp_delay > s2mpa01->ramp_delay16)
159 s2mpa01->ramp_delay16 = ramp_delay;
160 else
161 ramp_delay = s2mpa01->ramp_delay16;
162
163 ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
164 break;
165 case S2MPA01_BUCK7:
166 s2mpa01->ramp_delay7 = ramp_delay;
167 ramp_shift = S2MPA01_BUCK7_RAMP_SHIFT;
168 break;
169 case S2MPA01_BUCK8:
170 case S2MPA01_BUCK9:
171 case S2MPA01_BUCK10:
172 if (ramp_delay > s2mpa01->ramp_delay8910)
173 s2mpa01->ramp_delay8910 = ramp_delay;
174 else
175 ramp_delay = s2mpa01->ramp_delay8910;
176
177 ramp_shift = S2MPA01_BUCK8910_RAMP_SHIFT;
178 break;
179 default:
180 return 0;
181 }
182
183 if (!ramp_enable)
184 goto ramp_disable;
185
186 /* Ramp delay can be enabled/disabled only for buck[1234] */
187 if (rdev_get_id(rdev) >= S2MPA01_BUCK1 &&
188 rdev_get_id(rdev) <= S2MPA01_BUCK4) {
189 ret = regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
190 1 << enable_shift, 1 << enable_shift);
191 if (ret) {
192 dev_err(&rdev->dev, "failed to enable ramp rate\n");
193 return ret;
194 }
195 }
196
197 ramp_val = get_ramp_delay(ramp_delay);
198
199 return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
200 ramp_val << ramp_shift);
201
202ramp_disable:
203 return regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
204 1 << enable_shift, 0);
205}
206
207static const struct regulator_ops s2mpa01_ldo_ops = {
208 .list_voltage = regulator_list_voltage_linear,
209 .map_voltage = regulator_map_voltage_linear,
210 .is_enabled = regulator_is_enabled_regmap,
211 .enable = regulator_enable_regmap,
212 .disable = regulator_disable_regmap,
213 .get_voltage_sel = regulator_get_voltage_sel_regmap,
214 .set_voltage_sel = regulator_set_voltage_sel_regmap,
215 .set_voltage_time_sel = regulator_set_voltage_time_sel,
216};
217
218static const struct regulator_ops s2mpa01_buck_ops = {
219 .list_voltage = regulator_list_voltage_linear,
220 .map_voltage = regulator_map_voltage_linear,
221 .is_enabled = regulator_is_enabled_regmap,
222 .enable = regulator_enable_regmap,
223 .disable = regulator_disable_regmap,
224 .get_voltage_sel = regulator_get_voltage_sel_regmap,
225 .set_voltage_sel = regulator_set_voltage_sel_regmap,
226 .set_voltage_time_sel = s2mpa01_regulator_set_voltage_time_sel,
227 .set_ramp_delay = s2mpa01_set_ramp_delay,
228};
229
230#define regulator_desc_ldo(num, step) { \
231 .name = "LDO"#num, \
232 .of_match = of_match_ptr("LDO"#num), \
233 .regulators_node = of_match_ptr("regulators"), \
234 .id = S2MPA01_LDO##num, \
235 .ops = &s2mpa01_ldo_ops, \
236 .type = REGULATOR_VOLTAGE, \
237 .owner = THIS_MODULE, \
238 .min_uV = MIN_800_MV, \
239 .uV_step = step, \
240 .n_voltages = S2MPA01_LDO_N_VOLTAGES, \
241 .vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \
242 .vsel_mask = S2MPA01_LDO_VSEL_MASK, \
243 .enable_reg = S2MPA01_REG_L1CTRL + num - 1, \
244 .enable_mask = S2MPA01_ENABLE_MASK \
245}
246
247#define regulator_desc_buck1_4(num) { \
248 .name = "BUCK"#num, \
249 .of_match = of_match_ptr("BUCK"#num), \
250 .regulators_node = of_match_ptr("regulators"), \
251 .id = S2MPA01_BUCK##num, \
252 .ops = &s2mpa01_buck_ops, \
253 .type = REGULATOR_VOLTAGE, \
254 .owner = THIS_MODULE, \
255 .min_uV = MIN_600_MV, \
256 .uV_step = STEP_6_25_MV, \
257 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
258 .ramp_delay = S2MPA01_RAMP_DELAY, \
259 .vsel_reg = S2MPA01_REG_B1CTRL2 + (num - 1) * 2, \
260 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
261 .enable_reg = S2MPA01_REG_B1CTRL1 + (num - 1) * 2, \
262 .enable_mask = S2MPA01_ENABLE_MASK \
263}
264
265#define regulator_desc_buck5 { \
266 .name = "BUCK5", \
267 .of_match = of_match_ptr("BUCK5"), \
268 .regulators_node = of_match_ptr("regulators"), \
269 .id = S2MPA01_BUCK5, \
270 .ops = &s2mpa01_buck_ops, \
271 .type = REGULATOR_VOLTAGE, \
272 .owner = THIS_MODULE, \
273 .min_uV = MIN_800_MV, \
274 .uV_step = STEP_6_25_MV, \
275 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
276 .ramp_delay = S2MPA01_RAMP_DELAY, \
277 .vsel_reg = S2MPA01_REG_B5CTRL2, \
278 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
279 .enable_reg = S2MPA01_REG_B5CTRL1, \
280 .enable_mask = S2MPA01_ENABLE_MASK \
281}
282
283#define regulator_desc_buck6_10(num, min, step) { \
284 .name = "BUCK"#num, \
285 .of_match = of_match_ptr("BUCK"#num), \
286 .regulators_node = of_match_ptr("regulators"), \
287 .id = S2MPA01_BUCK##num, \
288 .ops = &s2mpa01_buck_ops, \
289 .type = REGULATOR_VOLTAGE, \
290 .owner = THIS_MODULE, \
291 .min_uV = min, \
292 .uV_step = step, \
293 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
294 .ramp_delay = S2MPA01_RAMP_DELAY, \
295 .vsel_reg = S2MPA01_REG_B6CTRL2 + (num - 6) * 2, \
296 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
297 .enable_reg = S2MPA01_REG_B6CTRL1 + (num - 6) * 2, \
298 .enable_mask = S2MPA01_ENABLE_MASK \
299}
300
301static const struct regulator_desc regulators[] = {
302 regulator_desc_ldo(1, STEP_25_MV),
303 regulator_desc_ldo(2, STEP_50_MV),
304 regulator_desc_ldo(3, STEP_50_MV),
305 regulator_desc_ldo(4, STEP_50_MV),
306 regulator_desc_ldo(5, STEP_25_MV),
307 regulator_desc_ldo(6, STEP_25_MV),
308 regulator_desc_ldo(7, STEP_50_MV),
309 regulator_desc_ldo(8, STEP_50_MV),
310 regulator_desc_ldo(9, STEP_50_MV),
311 regulator_desc_ldo(10, STEP_50_MV),
312 regulator_desc_ldo(11, STEP_50_MV),
313 regulator_desc_ldo(12, STEP_50_MV),
314 regulator_desc_ldo(13, STEP_50_MV),
315 regulator_desc_ldo(14, STEP_50_MV),
316 regulator_desc_ldo(15, STEP_50_MV),
317 regulator_desc_ldo(16, STEP_50_MV),
318 regulator_desc_ldo(17, STEP_50_MV),
319 regulator_desc_ldo(18, STEP_50_MV),
320 regulator_desc_ldo(19, STEP_50_MV),
321 regulator_desc_ldo(20, STEP_50_MV),
322 regulator_desc_ldo(21, STEP_50_MV),
323 regulator_desc_ldo(22, STEP_50_MV),
324 regulator_desc_ldo(23, STEP_50_MV),
325 regulator_desc_ldo(24, STEP_50_MV),
326 regulator_desc_ldo(25, STEP_50_MV),
327 regulator_desc_ldo(26, STEP_25_MV),
328 regulator_desc_buck1_4(1),
329 regulator_desc_buck1_4(2),
330 regulator_desc_buck1_4(3),
331 regulator_desc_buck1_4(4),
332 regulator_desc_buck5,
333 regulator_desc_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
334 regulator_desc_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
335 regulator_desc_buck6_10(8, MIN_800_MV, STEP_12_5_MV),
336 regulator_desc_buck6_10(9, MIN_1500_MV, STEP_12_5_MV),
337 regulator_desc_buck6_10(10, MIN_1000_MV, STEP_12_5_MV),
338};
339
340static int s2mpa01_pmic_probe(struct platform_device *pdev)
341{
342 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
343 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
344 struct regulator_config config = { };
345 struct s2mpa01_info *s2mpa01;
346 int i;
347
348 s2mpa01 = devm_kzalloc(&pdev->dev, sizeof(*s2mpa01), GFP_KERNEL);
349 if (!s2mpa01)
350 return -ENOMEM;
351
352 config.dev = iodev->dev;
353 config.regmap = iodev->regmap_pmic;
354 config.driver_data = s2mpa01;
355
356 for (i = 0; i < S2MPA01_REGULATOR_MAX; i++) {
357 struct regulator_dev *rdev;
358
359 if (pdata)
360 config.init_data = pdata->regulators[i].initdata;
361
362 rdev = devm_regulator_register(&pdev->dev,
363 ®ulators[i], &config);
364 if (IS_ERR(rdev)) {
365 dev_err(&pdev->dev, "regulator init failed for %d\n",
366 i);
367 return PTR_ERR(rdev);
368 }
369 }
370
371 return 0;
372}
373
374static const struct platform_device_id s2mpa01_pmic_id[] = {
375 { "s2mpa01-pmic", 0},
376 { },
377};
378MODULE_DEVICE_TABLE(platform, s2mpa01_pmic_id);
379
380static struct platform_driver s2mpa01_pmic_driver = {
381 .driver = {
382 .name = "s2mpa01-pmic",
383 },
384 .probe = s2mpa01_pmic_probe,
385 .id_table = s2mpa01_pmic_id,
386};
387
388module_platform_driver(s2mpa01_pmic_driver);
389
390/* Module information */
391MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
392MODULE_AUTHOR("Sachin Kamat <sachin.kamat@samsung.com>");
393MODULE_DESCRIPTION("Samsung S2MPA01 Regulator Driver");
394MODULE_LICENSE("GPL");
1/*
2 * Copyright (c) 2013 Samsung Electronics Co., Ltd
3 * http://www.samsung.com
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 */
11
12#include <linux/bug.h>
13#include <linux/err.h>
14#include <linux/gpio.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/of.h>
18#include <linux/regmap.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/regulator/of_regulator.h>
23#include <linux/mfd/samsung/core.h>
24#include <linux/mfd/samsung/s2mpa01.h>
25
26#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators)
27
28struct s2mpa01_info {
29 int ramp_delay24;
30 int ramp_delay3;
31 int ramp_delay5;
32 int ramp_delay16;
33 int ramp_delay7;
34 int ramp_delay8910;
35};
36
37static int get_ramp_delay(int ramp_delay)
38{
39 unsigned char cnt = 0;
40
41 ramp_delay /= 6250;
42
43 while (true) {
44 ramp_delay = ramp_delay >> 1;
45 if (ramp_delay == 0)
46 break;
47 cnt++;
48 }
49
50 if (cnt > 3)
51 cnt = 3;
52
53 return cnt;
54}
55
56static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
57 unsigned int old_selector,
58 unsigned int new_selector)
59{
60 struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
61 unsigned int ramp_delay = 0;
62 int old_volt, new_volt;
63
64 switch (rdev->desc->id) {
65 case S2MPA01_BUCK2:
66 case S2MPA01_BUCK4:
67 ramp_delay = s2mpa01->ramp_delay24;
68 break;
69 case S2MPA01_BUCK3:
70 ramp_delay = s2mpa01->ramp_delay3;
71 break;
72 case S2MPA01_BUCK5:
73 ramp_delay = s2mpa01->ramp_delay5;
74 break;
75 case S2MPA01_BUCK1:
76 case S2MPA01_BUCK6:
77 ramp_delay = s2mpa01->ramp_delay16;
78 break;
79 case S2MPA01_BUCK7:
80 ramp_delay = s2mpa01->ramp_delay7;
81 break;
82 case S2MPA01_BUCK8:
83 case S2MPA01_BUCK9:
84 case S2MPA01_BUCK10:
85 ramp_delay = s2mpa01->ramp_delay8910;
86 break;
87 }
88
89 if (ramp_delay == 0)
90 ramp_delay = rdev->desc->ramp_delay;
91
92 old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
93 new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
94
95 return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
96}
97
98static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
99{
100 struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev);
101 unsigned int ramp_val, ramp_shift, ramp_reg = S2MPA01_REG_RAMP2;
102 unsigned int ramp_enable = 1, enable_shift = 0;
103 int ret;
104
105 switch (rdev->desc->id) {
106 case S2MPA01_BUCK1:
107 enable_shift = S2MPA01_BUCK1_RAMP_EN_SHIFT;
108 if (!ramp_delay) {
109 ramp_enable = 0;
110 break;
111 }
112
113 if (ramp_delay > s2mpa01->ramp_delay16)
114 s2mpa01->ramp_delay16 = ramp_delay;
115 else
116 ramp_delay = s2mpa01->ramp_delay16;
117
118 ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
119 ramp_reg = S2MPA01_REG_RAMP1;
120 break;
121 case S2MPA01_BUCK2:
122 enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT;
123 if (!ramp_delay) {
124 ramp_enable = 0;
125 break;
126 }
127
128 if (ramp_delay > s2mpa01->ramp_delay24)
129 s2mpa01->ramp_delay24 = ramp_delay;
130 else
131 ramp_delay = s2mpa01->ramp_delay24;
132
133 ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
134 ramp_reg = S2MPA01_REG_RAMP1;
135 break;
136 case S2MPA01_BUCK3:
137 enable_shift = S2MPA01_BUCK3_RAMP_EN_SHIFT;
138 if (!ramp_delay) {
139 ramp_enable = 0;
140 break;
141 }
142
143 s2mpa01->ramp_delay3 = ramp_delay;
144 ramp_shift = S2MPA01_BUCK3_RAMP_SHIFT;
145 ramp_reg = S2MPA01_REG_RAMP1;
146 break;
147 case S2MPA01_BUCK4:
148 enable_shift = S2MPA01_BUCK4_RAMP_EN_SHIFT;
149 if (!ramp_delay) {
150 ramp_enable = 0;
151 break;
152 }
153
154 if (ramp_delay > s2mpa01->ramp_delay24)
155 s2mpa01->ramp_delay24 = ramp_delay;
156 else
157 ramp_delay = s2mpa01->ramp_delay24;
158
159 ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT;
160 ramp_reg = S2MPA01_REG_RAMP1;
161 break;
162 case S2MPA01_BUCK5:
163 s2mpa01->ramp_delay5 = ramp_delay;
164 ramp_shift = S2MPA01_BUCK5_RAMP_SHIFT;
165 break;
166 case S2MPA01_BUCK6:
167 if (ramp_delay > s2mpa01->ramp_delay16)
168 s2mpa01->ramp_delay16 = ramp_delay;
169 else
170 ramp_delay = s2mpa01->ramp_delay16;
171
172 ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT;
173 break;
174 case S2MPA01_BUCK7:
175 s2mpa01->ramp_delay7 = ramp_delay;
176 ramp_shift = S2MPA01_BUCK7_RAMP_SHIFT;
177 break;
178 case S2MPA01_BUCK8:
179 case S2MPA01_BUCK9:
180 case S2MPA01_BUCK10:
181 if (ramp_delay > s2mpa01->ramp_delay8910)
182 s2mpa01->ramp_delay8910 = ramp_delay;
183 else
184 ramp_delay = s2mpa01->ramp_delay8910;
185
186 ramp_shift = S2MPA01_BUCK8910_RAMP_SHIFT;
187 break;
188 default:
189 return 0;
190 }
191
192 if (!ramp_enable)
193 goto ramp_disable;
194
195 ret = regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
196 1 << enable_shift, 1 << enable_shift);
197 if (ret) {
198 dev_err(&rdev->dev, "failed to enable ramp rate\n");
199 return ret;
200 }
201
202 ramp_val = get_ramp_delay(ramp_delay);
203
204 return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
205 ramp_val << ramp_shift);
206
207ramp_disable:
208 return regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1,
209 1 << enable_shift, 0);
210}
211
212static struct regulator_ops s2mpa01_ldo_ops = {
213 .list_voltage = regulator_list_voltage_linear,
214 .map_voltage = regulator_map_voltage_linear,
215 .is_enabled = regulator_is_enabled_regmap,
216 .enable = regulator_enable_regmap,
217 .disable = regulator_disable_regmap,
218 .get_voltage_sel = regulator_get_voltage_sel_regmap,
219 .set_voltage_sel = regulator_set_voltage_sel_regmap,
220 .set_voltage_time_sel = regulator_set_voltage_time_sel,
221};
222
223static struct regulator_ops s2mpa01_buck_ops = {
224 .list_voltage = regulator_list_voltage_linear,
225 .map_voltage = regulator_map_voltage_linear,
226 .is_enabled = regulator_is_enabled_regmap,
227 .enable = regulator_enable_regmap,
228 .disable = regulator_disable_regmap,
229 .get_voltage_sel = regulator_get_voltage_sel_regmap,
230 .set_voltage_sel = regulator_set_voltage_sel_regmap,
231 .set_voltage_time_sel = s2mpa01_regulator_set_voltage_time_sel,
232 .set_ramp_delay = s2mpa01_set_ramp_delay,
233};
234
235#define regulator_desc_ldo1(num) { \
236 .name = "LDO"#num, \
237 .id = S2MPA01_LDO##num, \
238 .ops = &s2mpa01_ldo_ops, \
239 .type = REGULATOR_VOLTAGE, \
240 .owner = THIS_MODULE, \
241 .min_uV = S2MPA01_LDO_MIN, \
242 .uV_step = S2MPA01_LDO_STEP1, \
243 .n_voltages = S2MPA01_LDO_N_VOLTAGES, \
244 .vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \
245 .vsel_mask = S2MPA01_LDO_VSEL_MASK, \
246 .enable_reg = S2MPA01_REG_L1CTRL + num - 1, \
247 .enable_mask = S2MPA01_ENABLE_MASK \
248}
249#define regulator_desc_ldo2(num) { \
250 .name = "LDO"#num, \
251 .id = S2MPA01_LDO##num, \
252 .ops = &s2mpa01_ldo_ops, \
253 .type = REGULATOR_VOLTAGE, \
254 .owner = THIS_MODULE, \
255 .min_uV = S2MPA01_LDO_MIN, \
256 .uV_step = S2MPA01_LDO_STEP2, \
257 .n_voltages = S2MPA01_LDO_N_VOLTAGES, \
258 .vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \
259 .vsel_mask = S2MPA01_LDO_VSEL_MASK, \
260 .enable_reg = S2MPA01_REG_L1CTRL + num - 1, \
261 .enable_mask = S2MPA01_ENABLE_MASK \
262}
263
264#define regulator_desc_buck1_4(num) { \
265 .name = "BUCK"#num, \
266 .id = S2MPA01_BUCK##num, \
267 .ops = &s2mpa01_buck_ops, \
268 .type = REGULATOR_VOLTAGE, \
269 .owner = THIS_MODULE, \
270 .min_uV = S2MPA01_BUCK_MIN1, \
271 .uV_step = S2MPA01_BUCK_STEP1, \
272 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
273 .ramp_delay = S2MPA01_RAMP_DELAY, \
274 .vsel_reg = S2MPA01_REG_B1CTRL2 + (num - 1) * 2, \
275 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
276 .enable_reg = S2MPA01_REG_B1CTRL1 + (num - 1) * 2, \
277 .enable_mask = S2MPA01_ENABLE_MASK \
278}
279
280#define regulator_desc_buck5 { \
281 .name = "BUCK5", \
282 .id = S2MPA01_BUCK5, \
283 .ops = &s2mpa01_buck_ops, \
284 .type = REGULATOR_VOLTAGE, \
285 .owner = THIS_MODULE, \
286 .min_uV = S2MPA01_BUCK_MIN2, \
287 .uV_step = S2MPA01_BUCK_STEP1, \
288 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
289 .ramp_delay = S2MPA01_RAMP_DELAY, \
290 .vsel_reg = S2MPA01_REG_B5CTRL2, \
291 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
292 .enable_reg = S2MPA01_REG_B5CTRL1, \
293 .enable_mask = S2MPA01_ENABLE_MASK \
294}
295
296#define regulator_desc_buck6_7(num) { \
297 .name = "BUCK"#num, \
298 .id = S2MPA01_BUCK##num, \
299 .ops = &s2mpa01_buck_ops, \
300 .type = REGULATOR_VOLTAGE, \
301 .owner = THIS_MODULE, \
302 .min_uV = S2MPA01_BUCK_MIN1, \
303 .uV_step = S2MPA01_BUCK_STEP1, \
304 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
305 .ramp_delay = S2MPA01_RAMP_DELAY, \
306 .vsel_reg = S2MPA01_REG_B6CTRL2 + (num - 6) * 2, \
307 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
308 .enable_reg = S2MPA01_REG_B6CTRL1 + (num - 6) * 2, \
309 .enable_mask = S2MPA01_ENABLE_MASK \
310}
311
312#define regulator_desc_buck8 { \
313 .name = "BUCK8", \
314 .id = S2MPA01_BUCK8, \
315 .ops = &s2mpa01_buck_ops, \
316 .type = REGULATOR_VOLTAGE, \
317 .owner = THIS_MODULE, \
318 .min_uV = S2MPA01_BUCK_MIN2, \
319 .uV_step = S2MPA01_BUCK_STEP2, \
320 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
321 .ramp_delay = S2MPA01_RAMP_DELAY, \
322 .vsel_reg = S2MPA01_REG_B8CTRL2, \
323 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
324 .enable_reg = S2MPA01_REG_B8CTRL1, \
325 .enable_mask = S2MPA01_ENABLE_MASK \
326}
327
328#define regulator_desc_buck9 { \
329 .name = "BUCK9", \
330 .id = S2MPA01_BUCK9, \
331 .ops = &s2mpa01_buck_ops, \
332 .type = REGULATOR_VOLTAGE, \
333 .owner = THIS_MODULE, \
334 .min_uV = S2MPA01_BUCK_MIN4, \
335 .uV_step = S2MPA01_BUCK_STEP2, \
336 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
337 .ramp_delay = S2MPA01_RAMP_DELAY, \
338 .vsel_reg = S2MPA01_REG_B9CTRL2, \
339 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
340 .enable_reg = S2MPA01_REG_B9CTRL1, \
341 .enable_mask = S2MPA01_ENABLE_MASK \
342}
343
344#define regulator_desc_buck10 { \
345 .name = "BUCK10", \
346 .id = S2MPA01_BUCK10, \
347 .ops = &s2mpa01_buck_ops, \
348 .type = REGULATOR_VOLTAGE, \
349 .owner = THIS_MODULE, \
350 .min_uV = S2MPA01_BUCK_MIN3, \
351 .uV_step = S2MPA01_BUCK_STEP2, \
352 .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \
353 .ramp_delay = S2MPA01_RAMP_DELAY, \
354 .vsel_reg = S2MPA01_REG_B10CTRL2, \
355 .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \
356 .enable_reg = S2MPA01_REG_B10CTRL1, \
357 .enable_mask = S2MPA01_ENABLE_MASK \
358}
359
360static struct regulator_desc regulators[] = {
361 regulator_desc_ldo2(1),
362 regulator_desc_ldo1(2),
363 regulator_desc_ldo1(3),
364 regulator_desc_ldo1(4),
365 regulator_desc_ldo1(5),
366 regulator_desc_ldo2(6),
367 regulator_desc_ldo1(7),
368 regulator_desc_ldo1(8),
369 regulator_desc_ldo1(9),
370 regulator_desc_ldo1(10),
371 regulator_desc_ldo2(11),
372 regulator_desc_ldo1(12),
373 regulator_desc_ldo1(13),
374 regulator_desc_ldo1(14),
375 regulator_desc_ldo1(15),
376 regulator_desc_ldo1(16),
377 regulator_desc_ldo1(17),
378 regulator_desc_ldo1(18),
379 regulator_desc_ldo1(19),
380 regulator_desc_ldo1(20),
381 regulator_desc_ldo1(21),
382 regulator_desc_ldo2(22),
383 regulator_desc_ldo2(23),
384 regulator_desc_ldo1(24),
385 regulator_desc_ldo1(25),
386 regulator_desc_ldo1(26),
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_7(6),
393 regulator_desc_buck6_7(7),
394 regulator_desc_buck8,
395 regulator_desc_buck9,
396 regulator_desc_buck10,
397};
398
399static int s2mpa01_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[S2MPA01_REGULATOR_MAX];
404 struct device_node *reg_np = NULL;
405 struct regulator_config config = { };
406 struct s2mpa01_info *s2mpa01;
407 int i;
408
409 s2mpa01 = devm_kzalloc(&pdev->dev, sizeof(*s2mpa01), GFP_KERNEL);
410 if (!s2mpa01)
411 return -ENOMEM;
412
413 for (i = 0; i < S2MPA01_REGULATOR_CNT; i++)
414 rdata[i].name = regulators[i].name;
415
416 if (iodev->dev->of_node) {
417 reg_np = of_get_child_by_name(iodev->dev->of_node,
418 "regulators");
419 if (!reg_np) {
420 dev_err(&pdev->dev,
421 "could not find regulators sub-node\n");
422 return -EINVAL;
423 }
424
425 of_regulator_match(&pdev->dev, reg_np, rdata,
426 S2MPA01_REGULATOR_MAX);
427 of_node_put(reg_np);
428 }
429
430 platform_set_drvdata(pdev, s2mpa01);
431
432 config.dev = &pdev->dev;
433 config.regmap = iodev->regmap_pmic;
434 config.driver_data = s2mpa01;
435
436 for (i = 0; i < S2MPA01_REGULATOR_MAX; i++) {
437 struct regulator_dev *rdev;
438 if (pdata)
439 config.init_data = pdata->regulators[i].initdata;
440 else
441 config.init_data = rdata[i].init_data;
442
443 if (reg_np)
444 config.of_node = rdata[i].of_node;
445
446 rdev = devm_regulator_register(&pdev->dev,
447 ®ulators[i], &config);
448 if (IS_ERR(rdev)) {
449 dev_err(&pdev->dev, "regulator init failed for %d\n",
450 i);
451 return PTR_ERR(rdev);
452 }
453 }
454
455 return 0;
456}
457
458static const struct platform_device_id s2mpa01_pmic_id[] = {
459 { "s2mpa01-pmic", 0},
460 { },
461};
462MODULE_DEVICE_TABLE(platform, s2mpa01_pmic_id);
463
464static struct platform_driver s2mpa01_pmic_driver = {
465 .driver = {
466 .name = "s2mpa01-pmic",
467 .owner = THIS_MODULE,
468 },
469 .probe = s2mpa01_pmic_probe,
470 .id_table = s2mpa01_pmic_id,
471};
472
473module_platform_driver(s2mpa01_pmic_driver);
474
475/* Module information */
476MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
477MODULE_AUTHOR("Sachin Kamat <sachin.kamat@samsung.com>");
478MODULE_DESCRIPTION("SAMSUNG S2MPA01 Regulator Driver");
479MODULE_LICENSE("GPL");