regulator: lp8788-buck: Kill _gpio_request function
[linux-3.10.git] / drivers / regulator / s2mps11.c
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
26 struct s2mps11_info {
27         struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX];
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
42 static 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
57 static 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
68 static 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
183 static 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
234 static __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 s2mps11_info *s2mps11;
240         int i, ret;
241         unsigned char ramp_enable, ramp_reg = 0;
242
243         if (!pdata) {
244                 dev_err(pdev->dev.parent, "Platform data not supplied\n");
245                 return -ENODEV;
246         }
247
248         s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
249                                 GFP_KERNEL);
250         if (!s2mps11)
251                 return -ENOMEM;
252
253         platform_set_drvdata(pdev, s2mps11);
254
255         s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
256         s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
257         s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
258         s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
259         s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
260         s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
261
262         s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
263         s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
264         s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
265         s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
266
267         ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
268                 (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
269
270         if (ramp_enable) {
271                 if (s2mps11->buck2_ramp)
272                         ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
273                 if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
274                         ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
275                 sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable);
276         }
277
278         ramp_reg &= 0x00;
279         ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
280         ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
281         ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
282         ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
283         sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);
284
285         for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
286
287                 config.dev = &pdev->dev;
288                 config.regmap = iodev->regmap;
289                 config.init_data = pdata->regulators[i].initdata;
290                 config.driver_data = s2mps11;
291
292                 s2mps11->rdev[i] = regulator_register(&regulators[i], &config);
293                 if (IS_ERR(s2mps11->rdev[i])) {
294                         ret = PTR_ERR(s2mps11->rdev[i]);
295                         dev_err(&pdev->dev, "regulator init failed for %d\n",
296                                 i);
297                         s2mps11->rdev[i] = NULL;
298                         goto err;
299                 }
300         }
301
302         return 0;
303 err:
304         for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
305                 regulator_unregister(s2mps11->rdev[i]);
306
307         return ret;
308 }
309
310 static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
311 {
312         struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
313         int i;
314
315         for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
316                 regulator_unregister(s2mps11->rdev[i]);
317
318         return 0;
319 }
320
321 static const struct platform_device_id s2mps11_pmic_id[] = {
322         { "s2mps11-pmic", 0},
323         { },
324 };
325 MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
326
327 static struct platform_driver s2mps11_pmic_driver = {
328         .driver = {
329                 .name = "s2mps11-pmic",
330                 .owner = THIS_MODULE,
331         },
332         .probe = s2mps11_pmic_probe,
333         .remove = __devexit_p(s2mps11_pmic_remove),
334         .id_table = s2mps11_pmic_id,
335 };
336
337 static int __init s2mps11_pmic_init(void)
338 {
339         return platform_driver_register(&s2mps11_pmic_driver);
340 }
341 subsys_initcall(s2mps11_pmic_init);
342
343 static void __exit s2mps11_pmic_exit(void)
344 {
345         platform_driver_unregister(&s2mps11_pmic_driver);
346 }
347 module_exit(s2mps11_pmic_exit);
348
349 /* Module information */
350 MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
351 MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
352 MODULE_LICENSE("GPL");