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path: root/drivers/regulator/s2mps11.c
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Diffstat (limited to 'drivers/regulator/s2mps11.c')
-rw-r--r--drivers/regulator/s2mps11.c368
1 files changed, 368 insertions, 0 deletions
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
new file mode 100644
index 000000000000..514cf5416a3d
--- /dev/null
+++ b/drivers/regulator/s2mps11.c
@@ -0,0 +1,368 @@
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/delay.h>
16#include <linux/err.h>
17#include <linux/gpio.h>
18#include <linux/slab.h>
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/regulator/driver.h>
22#include <linux/regulator/machine.h>
23#include <linux/mfd/samsung/core.h>
24#include <linux/mfd/samsung/s2mps11.h>
25
26struct s2mps11_info {
27 struct device *dev;
28 struct sec_pmic_dev *iodev;
29 struct regulator_dev **rdev;
30
31 int ramp_delay2;
32 int ramp_delay34;
33 int ramp_delay5;
34 int ramp_delay16;
35 int ramp_delay7810;
36 int ramp_delay9;
37
38 bool buck6_ramp;
39 bool buck2_ramp;
40 bool buck3_ramp;
41 bool buck4_ramp;
42};
43
44static int get_ramp_delay(int ramp_delay)
45{
46 unsigned char cnt = 0;
47
48 ramp_delay /= 6;
49
50 while (true) {
51 ramp_delay = ramp_delay >> 1;
52 if (ramp_delay == 0)
53 break;
54 cnt++;
55 }
56 return cnt;
57}
58
59static struct regulator_ops s2mps11_ldo_ops = {
60 .list_voltage = regulator_list_voltage_linear,
61 .map_voltage = regulator_map_voltage_linear,
62 .is_enabled = regulator_is_enabled_regmap,
63 .enable = regulator_enable_regmap,
64 .disable = regulator_disable_regmap,
65 .get_voltage_sel = regulator_get_voltage_sel_regmap,
66 .set_voltage_sel = regulator_set_voltage_sel_regmap,
67 .set_voltage_time_sel = regulator_set_voltage_time_sel,
68};
69
70static struct regulator_ops s2mps11_buck_ops = {
71 .list_voltage = regulator_list_voltage_linear,
72 .map_voltage = regulator_map_voltage_linear,
73 .is_enabled = regulator_is_enabled_regmap,
74 .enable = regulator_enable_regmap,
75 .disable = regulator_disable_regmap,
76 .get_voltage_sel = regulator_get_voltage_sel_regmap,
77 .set_voltage_sel = regulator_set_voltage_sel_regmap,
78 .set_voltage_time_sel = regulator_set_voltage_time_sel,
79};
80
81#define regulator_desc_ldo1(num) { \
82 .name = "LDO"#num, \
83 .id = S2MPS11_LDO##num, \
84 .ops = &s2mps11_ldo_ops, \
85 .type = REGULATOR_VOLTAGE, \
86 .owner = THIS_MODULE, \
87 .min_uV = S2MPS11_LDO_MIN, \
88 .uV_step = S2MPS11_LDO_STEP1, \
89 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
90 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
91 .vsel_mask = S2MPS11_LDO_VSEL_MASK \
92 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
93 .enable_mask = S2MPS11_ENABLE_MASK \
94}
95#define regulator_desc_ldo2(num) { \
96 .name = "LDO"#num, \
97 .id = S2MPS11_LDO##num, \
98 .ops = &s2mps11_ldo_ops, \
99 .type = REGULATOR_VOLTAGE, \
100 .owner = THIS_MODULE, \
101 .min_uV = S2MPS11_LDO_MIN, \
102 .uV_step = S2MPS11_LDO_STEP2, \
103 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
104 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
105 .vsel_mask = S2MPS11_LDO_VSEL_MASK \
106 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
107 .enable_mask = S2MPS11_ENABLE_MASK \
108}
109
110#define regulator_desc_buck1_4(num) { \
111 .name = "BUCK"#num, \
112 .id = S2MPS11_BUCK##num, \
113 .ops = &s2mps11_buck_ops, \
114 .type = REGULATOR_VOLTAGE, \
115 .owner = THIS_MODULE, \
116 .min_uV = S2MPS11_BUCK_MIN1, \
117 .uV_step = S2MPS11_BUCK_STEP1, \
118 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
119 .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
120 .vsel_mask = S2MPS11_BUCK_VSEL_MASK \
121 .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
122 .enable_mask = S2MPS11_ENABLE_MASK \
123}
124
125#define regulator_desc_buck5 { \
126 .name = "BUCK5", \
127 .id = S2MPS11_BUCK5, \
128 .ops = &s2mps11_buck_ops, \
129 .type = REGULATOR_VOLTAGE, \
130 .owner = THIS_MODULE, \
131 .min_uV = S2MPS11_BUCK_MIN1, \
132 .uV_step = S2MPS11_BUCK_STEP1, \
133 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
134 .vsel_reg = S2MPS11_REG_B5CTRL2, \
135 .vsel_mask = S2MPS11_BUCK_VSEL_MASK \
136 .enable_reg = S2MPS11_REG_B5CTRL1, \
137 .enable_mask = S2MPS11_ENABLE_MASK \
138}
139
140#define regulator_desc_buck6_8(num) { \
141 .name = "BUCK"#num, \
142 .id = S2MPS11_BUCK##num, \
143 .ops = &s2mps11_buck_ops, \
144 .type = REGULATOR_VOLTAGE, \
145 .owner = THIS_MODULE, \
146 .min_uV = S2MPS11_BUCK_MIN1, \
147 .uV_step = S2MPS11_BUCK_STEP1, \
148 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
149 .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
150 .vsel_mask = S2MPS11_BUCK_VSEL_MASK \
151 .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
152 .enable_mask = S2MPS11_ENABLE_MASK \
153}
154
155#define regulator_desc_buck9 { \
156 .name = "BUCK9", \
157 .id = S2MPS11_BUCK9, \
158 .ops = &s2mps11_buck_ops, \
159 .type = REGULATOR_VOLTAGE, \
160 .owner = THIS_MODULE, \
161 .min_uV = S2MPS11_BUCK_MIN3, \
162 .uV_step = S2MPS11_BUCK_STEP3, \
163 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
164 .vsel_reg = S2MPS11_REG_B9CTRL2, \
165 .vsel_mask = S2MPS11_BUCK_VSEL_MASK \
166 .enable_reg = S2MPS11_REG_B9CTRL1, \
167 .enable_mask = S2MPS11_ENABLE_MASK \
168}
169
170#define regulator_desc_buck10 { \
171 .name = "BUCK10", \
172 .id = S2MPS11_BUCK10, \
173 .ops = &s2mps11_buck_ops, \
174 .type = REGULATOR_VOLTAGE, \
175 .owner = THIS_MODULE, \
176 .min_uV = S2MPS11_BUCK_MIN2, \
177 .uV_step = S2MPS11_BUCK_STEP2, \
178 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
179 .vsel_reg = S2MPS11_REG_B9CTRL2, \
180 .vsel_mask = S2MPS11_BUCK_VSEL_MASK \
181 .enable_reg = S2MPS11_REG_B9CTRL1, \
182 .enable_mask = S2MPS11_ENABLE_MASK \
183}
184
185static struct regulator_desc regulators[] = {
186 regulator_desc_ldo2(1),
187 regulator_desc_ldo1(2),
188 regulator_desc_ldo1(3),
189 regulator_desc_ldo1(4),
190 regulator_desc_ldo1(5),
191 regulator_desc_ldo2(6),
192 regulator_desc_ldo1(7),
193 regulator_desc_ldo1(8),
194 regulator_desc_ldo1(9),
195 regulator_desc_ldo1(10),
196 regulator_desc_ldo2(11),
197 regulator_desc_ldo1(12),
198 regulator_desc_ldo1(13),
199 regulator_desc_ldo1(14),
200 regulator_desc_ldo1(15),
201 regulator_desc_ldo1(16),
202 regulator_desc_ldo1(17),
203 regulator_desc_ldo1(18),
204 regulator_desc_ldo1(19),
205 regulator_desc_ldo1(20),
206 regulator_desc_ldo1(21),
207 regulator_desc_ldo2(22),
208 regulator_desc_ldo2(23),
209 regulator_desc_ldo1(24),
210 regulator_desc_ldo1(25),
211 regulator_desc_ldo1(26),
212 regulator_desc_ldo2(27),
213 regulator_desc_ldo1(28),
214 regulator_desc_ldo1(29),
215 regulator_desc_ldo1(30),
216 regulator_desc_ldo1(31),
217 regulator_desc_ldo1(32),
218 regulator_desc_ldo1(33),
219 regulator_desc_ldo1(34),
220 regulator_desc_ldo1(35),
221 regulator_desc_ldo1(36),
222 regulator_desc_ldo1(37),
223 regulator_desc_ldo1(38),
224 regulator_desc_buck1_4(1),
225 regulator_desc_buck1_4(2),
226 regulator_desc_buck1_4(3),
227 regulator_desc_buck1_4(4),
228 regulator_desc_buck5,
229 regulator_desc_buck6_8(6),
230 regulator_desc_buck6_8(7),
231 regulator_desc_buck6_8(8),
232 regulator_desc_buck9,
233 regulator_desc_buck10,
234};
235
236static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
237{
238 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
239 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
240 struct regulator_config config = { };
241 struct regulator_dev **rdev;
242 struct s2mps11_info *s2mps11;
243 int i, ret, size;
244 unsigned char ramp_enable, ramp_reg = 0;
245
246 if (!pdata) {
247 dev_err(pdev->dev.parent, "Platform data not supplied\n");
248 return -ENODEV;
249 }
250
251 s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
252 GFP_KERNEL);
253 if (!s2mps11)
254 return -ENOMEM;
255
256 size = sizeof(struct regulator_dev *) * S2MPS11_REGULATOR_MAX;
257 s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
258 if (!s2mps11->rdev) {
259 return -ENOMEM;
260 }
261
262 rdev = s2mps11->rdev;
263 config.dev = &pdev->dev;
264 config.regmap = iodev->regmap;
265 platform_set_drvdata(pdev, s2mps11);
266
267 s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
268 s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
269 s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
270 s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
271 s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
272 s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
273
274 s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
275 s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
276 s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
277 s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
278
279 ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
280 (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
281
282 if (ramp_enable) {
283 if (s2mps11->buck2_ramp)
284 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
285 if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
286 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
287 sec_reg_update(s2mps11->iodev, S2MPS11_REG_RAMP,
288 ramp_reg | ramp_enable, 0xff);
289 }
290
291 ramp_reg &= 0x00;
292 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
293 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
294 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
295 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
296 sec_reg_update(s2mps11->iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg, 0xff);
297
298 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
299
300 config.dev = s2mps11->dev;
301 config.regmap = iodev->regmap;
302 config.init_data = pdata->regulators[i].initdata;
303 config.driver_data = s2mps11;
304
305 rdev[i] = regulator_register(&regulators[i], &config);
306 if (IS_ERR(rdev[i])) {
307 ret = PTR_ERR(rdev[i]);
308 dev_err(s2mps11->dev, "regulator init failed for %d\n",
309 i);
310 rdev[i] = NULL;
311 goto err;
312 }
313 }
314
315 return 0;
316err:
317 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
318 if (rdev[i])
319 regulator_unregister(rdev[i]);
320
321 return ret;
322}
323
324static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
325{
326 struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
327 struct regulator_dev **rdev = s2mps11->rdev;
328 int i;
329
330 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
331 if (rdev[i])
332 regulator_unregister(rdev[i]);
333
334 return 0;
335}
336
337static const struct platform_device_id s2mps11_pmic_id[] = {
338 { "s2mps11-pmic", 0},
339 { },
340};
341MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
342
343static struct platform_driver s2mps11_pmic_driver = {
344 .driver = {
345 .name = "s2mps11-pmic",
346 .owner = THIS_MODULE,
347 },
348 .probe = s2mps11_pmic_probe,
349 .remove = __devexit_p(s2mps11_pmic_remove),
350 .id_table = s2mps11_pmic_id,
351};
352
353static int __init s2mps11_pmic_init(void)
354{
355 return platform_driver_register(&s2mps11_pmic_driver);
356}
357subsys_initcall(s2mps11_pmic_init);
358
359static void __exit s2mps11_pmic_exit(void)
360{
361 platform_driver_unregister(&s2mps11_pmic_driver);
362}
363module_exit(s2mps11_pmic_exit);
364
365/* Module information */
366MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
367MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
368MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 12:02:11 -0500