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Diffstat (limited to 'drivers/regulator/s2mps11.c')
-rw-r--r--drivers/regulator/s2mps11.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
new file mode 100644
index 000000000000..4669dc9ac74a
--- /dev/null
+++ b/drivers/regulator/s2mps11.c
@@ -0,0 +1,363 @@
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 regulator_dev **rdev;
28
29 int ramp_delay2;
30 int ramp_delay34;
31 int ramp_delay5;
32 int ramp_delay16;
33 int ramp_delay7810;
34 int ramp_delay9;
35
36 bool buck6_ramp;
37 bool buck2_ramp;
38 bool buck3_ramp;
39 bool buck4_ramp;
40};
41
42static int get_ramp_delay(int ramp_delay)
43{
44 unsigned char cnt = 0;
45
46 ramp_delay /= 6;
47
48 while (true) {
49 ramp_delay = ramp_delay >> 1;
50 if (ramp_delay == 0)
51 break;
52 cnt++;
53 }
54 return cnt;
55}
56
57static struct regulator_ops s2mps11_ldo_ops = {
58 .list_voltage = regulator_list_voltage_linear,
59 .map_voltage = regulator_map_voltage_linear,
60 .is_enabled = regulator_is_enabled_regmap,
61 .enable = regulator_enable_regmap,
62 .disable = regulator_disable_regmap,
63 .get_voltage_sel = regulator_get_voltage_sel_regmap,
64 .set_voltage_sel = regulator_set_voltage_sel_regmap,
65 .set_voltage_time_sel = regulator_set_voltage_time_sel,
66};
67
68static struct regulator_ops s2mps11_buck_ops = {
69 .list_voltage = regulator_list_voltage_linear,
70 .map_voltage = regulator_map_voltage_linear,
71 .is_enabled = regulator_is_enabled_regmap,
72 .enable = regulator_enable_regmap,
73 .disable = regulator_disable_regmap,
74 .get_voltage_sel = regulator_get_voltage_sel_regmap,
75 .set_voltage_sel = regulator_set_voltage_sel_regmap,
76 .set_voltage_time_sel = regulator_set_voltage_time_sel,
77};
78
79#define regulator_desc_ldo1(num) { \
80 .name = "LDO"#num, \
81 .id = S2MPS11_LDO##num, \
82 .ops = &s2mps11_ldo_ops, \
83 .type = REGULATOR_VOLTAGE, \
84 .owner = THIS_MODULE, \
85 .min_uV = S2MPS11_LDO_MIN, \
86 .uV_step = S2MPS11_LDO_STEP1, \
87 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
88 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
89 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
90 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
91 .enable_mask = S2MPS11_ENABLE_MASK \
92}
93#define regulator_desc_ldo2(num) { \
94 .name = "LDO"#num, \
95 .id = S2MPS11_LDO##num, \
96 .ops = &s2mps11_ldo_ops, \
97 .type = REGULATOR_VOLTAGE, \
98 .owner = THIS_MODULE, \
99 .min_uV = S2MPS11_LDO_MIN, \
100 .uV_step = S2MPS11_LDO_STEP2, \
101 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
102 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
103 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
104 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
105 .enable_mask = S2MPS11_ENABLE_MASK \
106}
107
108#define regulator_desc_buck1_4(num) { \
109 .name = "BUCK"#num, \
110 .id = S2MPS11_BUCK##num, \
111 .ops = &s2mps11_buck_ops, \
112 .type = REGULATOR_VOLTAGE, \
113 .owner = THIS_MODULE, \
114 .min_uV = S2MPS11_BUCK_MIN1, \
115 .uV_step = S2MPS11_BUCK_STEP1, \
116 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
117 .vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
118 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
119 .enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
120 .enable_mask = S2MPS11_ENABLE_MASK \
121}
122
123#define regulator_desc_buck5 { \
124 .name = "BUCK5", \
125 .id = S2MPS11_BUCK5, \
126 .ops = &s2mps11_buck_ops, \
127 .type = REGULATOR_VOLTAGE, \
128 .owner = THIS_MODULE, \
129 .min_uV = S2MPS11_BUCK_MIN1, \
130 .uV_step = S2MPS11_BUCK_STEP1, \
131 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
132 .vsel_reg = S2MPS11_REG_B5CTRL2, \
133 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
134 .enable_reg = S2MPS11_REG_B5CTRL1, \
135 .enable_mask = S2MPS11_ENABLE_MASK \
136}
137
138#define regulator_desc_buck6_8(num) { \
139 .name = "BUCK"#num, \
140 .id = S2MPS11_BUCK##num, \
141 .ops = &s2mps11_buck_ops, \
142 .type = REGULATOR_VOLTAGE, \
143 .owner = THIS_MODULE, \
144 .min_uV = S2MPS11_BUCK_MIN1, \
145 .uV_step = S2MPS11_BUCK_STEP1, \
146 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
147 .vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
148 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
149 .enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
150 .enable_mask = S2MPS11_ENABLE_MASK \
151}
152
153#define regulator_desc_buck9 { \
154 .name = "BUCK9", \
155 .id = S2MPS11_BUCK9, \
156 .ops = &s2mps11_buck_ops, \
157 .type = REGULATOR_VOLTAGE, \
158 .owner = THIS_MODULE, \
159 .min_uV = S2MPS11_BUCK_MIN3, \
160 .uV_step = S2MPS11_BUCK_STEP3, \
161 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
162 .vsel_reg = S2MPS11_REG_B9CTRL2, \
163 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
164 .enable_reg = S2MPS11_REG_B9CTRL1, \
165 .enable_mask = S2MPS11_ENABLE_MASK \
166}
167
168#define regulator_desc_buck10 { \
169 .name = "BUCK10", \
170 .id = S2MPS11_BUCK10, \
171 .ops = &s2mps11_buck_ops, \
172 .type = REGULATOR_VOLTAGE, \
173 .owner = THIS_MODULE, \
174 .min_uV = S2MPS11_BUCK_MIN2, \
175 .uV_step = S2MPS11_BUCK_STEP2, \
176 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
177 .vsel_reg = S2MPS11_REG_B9CTRL2, \
178 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
179 .enable_reg = S2MPS11_REG_B9CTRL1, \
180 .enable_mask = S2MPS11_ENABLE_MASK \
181}
182
183static struct regulator_desc regulators[] = {
184 regulator_desc_ldo2(1),
185 regulator_desc_ldo1(2),
186 regulator_desc_ldo1(3),
187 regulator_desc_ldo1(4),
188 regulator_desc_ldo1(5),
189 regulator_desc_ldo2(6),
190 regulator_desc_ldo1(7),
191 regulator_desc_ldo1(8),
192 regulator_desc_ldo1(9),
193 regulator_desc_ldo1(10),
194 regulator_desc_ldo2(11),
195 regulator_desc_ldo1(12),
196 regulator_desc_ldo1(13),
197 regulator_desc_ldo1(14),
198 regulator_desc_ldo1(15),
199 regulator_desc_ldo1(16),
200 regulator_desc_ldo1(17),
201 regulator_desc_ldo1(18),
202 regulator_desc_ldo1(19),
203 regulator_desc_ldo1(20),
204 regulator_desc_ldo1(21),
205 regulator_desc_ldo2(22),
206 regulator_desc_ldo2(23),
207 regulator_desc_ldo1(24),
208 regulator_desc_ldo1(25),
209 regulator_desc_ldo1(26),
210 regulator_desc_ldo2(27),
211 regulator_desc_ldo1(28),
212 regulator_desc_ldo1(29),
213 regulator_desc_ldo1(30),
214 regulator_desc_ldo1(31),
215 regulator_desc_ldo1(32),
216 regulator_desc_ldo1(33),
217 regulator_desc_ldo1(34),
218 regulator_desc_ldo1(35),
219 regulator_desc_ldo1(36),
220 regulator_desc_ldo1(37),
221 regulator_desc_ldo1(38),
222 regulator_desc_buck1_4(1),
223 regulator_desc_buck1_4(2),
224 regulator_desc_buck1_4(3),
225 regulator_desc_buck1_4(4),
226 regulator_desc_buck5,
227 regulator_desc_buck6_8(6),
228 regulator_desc_buck6_8(7),
229 regulator_desc_buck6_8(8),
230 regulator_desc_buck9,
231 regulator_desc_buck10,
232};
233
234static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
235{
236 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
237 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
238 struct regulator_config config = { };
239 struct regulator_dev **rdev;
240 struct s2mps11_info *s2mps11;
241 int i, ret, size;
242 unsigned char ramp_enable, ramp_reg = 0;
243
244 if (!pdata) {
245 dev_err(pdev->dev.parent, "Platform data not supplied\n");
246 return -ENODEV;
247 }
248
249 s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
250 GFP_KERNEL);
251 if (!s2mps11)
252 return -ENOMEM;
253
254 size = sizeof(struct regulator_dev *) * S2MPS11_REGULATOR_MAX;
255 s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
256 if (!s2mps11->rdev) {
257 return -ENOMEM;
258 }
259
260 rdev = s2mps11->rdev;
261 platform_set_drvdata(pdev, s2mps11);
262
263 s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
264 s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
265 s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
266 s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
267 s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
268 s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
269
270 s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
271 s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
272 s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
273 s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
274
275 ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
276 (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
277
278 if (ramp_enable) {
279 if (s2mps11->buck2_ramp)
280 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
281 if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
282 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
283 sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable);
284 }
285
286 ramp_reg &= 0x00;
287 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
288 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
289 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
290 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
291 sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);
292
293 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
294
295 config.dev = &pdev->dev;
296 config.regmap = iodev->regmap;
297 config.init_data = pdata->regulators[i].initdata;
298 config.driver_data = s2mps11;
299
300 rdev[i] = regulator_register(&regulators[i], &config);
301 if (IS_ERR(rdev[i])) {
302 ret = PTR_ERR(rdev[i]);
303 dev_err(&pdev->dev, "regulator init failed for %d\n",
304 i);
305 rdev[i] = NULL;
306 goto err;
307 }
308 }
309
310 return 0;
311err:
312 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
313 if (rdev[i])
314 regulator_unregister(rdev[i]);
315
316 return ret;
317}
318
319static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
320{
321 struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
322 struct regulator_dev **rdev = s2mps11->rdev;
323 int i;
324
325 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
326 if (rdev[i])
327 regulator_unregister(rdev[i]);
328
329 return 0;
330}
331
332static const struct platform_device_id s2mps11_pmic_id[] = {
333 { "s2mps11-pmic", 0},
334 { },
335};
336MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
337
338static struct platform_driver s2mps11_pmic_driver = {
339 .driver = {
340 .name = "s2mps11-pmic",
341 .owner = THIS_MODULE,
342 },
343 .probe = s2mps11_pmic_probe,
344 .remove = __devexit_p(s2mps11_pmic_remove),
345 .id_table = s2mps11_pmic_id,
346};
347
348static int __init s2mps11_pmic_init(void)
349{
350 return platform_driver_register(&s2mps11_pmic_driver);
351}
352subsys_initcall(s2mps11_pmic_init);
353
354static void __exit s2mps11_pmic_exit(void)
355{
356 platform_driver_unregister(&s2mps11_pmic_driver);
357}
358module_exit(s2mps11_pmic_exit);
359
360/* Module information */
361MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
362MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
363MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 12:06:28 -0500