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cb74685e SK |
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 { | |
cb74685e SK |
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 | ||
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, \ | |
2693fcab | 89 | .vsel_mask = S2MPS11_LDO_VSEL_MASK, \ |
cb74685e SK |
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, \ | |
2693fcab | 103 | .vsel_mask = S2MPS11_LDO_VSEL_MASK, \ |
cb74685e SK |
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, \ | |
2693fcab | 118 | .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ |
cb74685e SK |
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, \ | |
2693fcab | 133 | .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ |
cb74685e SK |
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, \ | |
2693fcab | 148 | .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ |
cb74685e SK |
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, \ | |
2693fcab | 163 | .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ |
cb74685e SK |
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, \ | |
2693fcab | 178 | .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \ |
cb74685e SK |
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 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; | |
cb74685e SK |
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; | |
232b2504 | 283 | sec_reg_update(iodev, S2MPS11_REG_RAMP, |
cb74685e SK |
284 | ramp_reg | ramp_enable, 0xff); |
285 | } | |
286 | ||
287 | ramp_reg &= 0x00; | |
288 | ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6; | |
289 | ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4; | |
290 | ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2; | |
291 | ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9); | |
232b2504 | 292 | sec_reg_update(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg, 0xff); |
cb74685e SK |
293 | |
294 | for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) { | |
295 | ||
232b2504 | 296 | config.dev = &pdev->dev; |
cb74685e SK |
297 | config.regmap = iodev->regmap; |
298 | config.init_data = pdata->regulators[i].initdata; | |
299 | config.driver_data = s2mps11; | |
300 | ||
301 | rdev[i] = regulator_register(®ulators[i], &config); | |
302 | if (IS_ERR(rdev[i])) { | |
303 | ret = PTR_ERR(rdev[i]); | |
232b2504 AL |
304 | dev_err(&pdev->dev, "regulator init failed for %d\n", |
305 | i); | |
cb74685e SK |
306 | rdev[i] = NULL; |
307 | goto err; | |
308 | } | |
309 | } | |
310 | ||
311 | return 0; | |
312 | err: | |
313 | for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) | |
314 | if (rdev[i]) | |
315 | regulator_unregister(rdev[i]); | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
320 | static int __devexit s2mps11_pmic_remove(struct platform_device *pdev) | |
321 | { | |
322 | struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev); | |
323 | struct regulator_dev **rdev = s2mps11->rdev; | |
324 | int i; | |
325 | ||
326 | for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) | |
327 | if (rdev[i]) | |
328 | regulator_unregister(rdev[i]); | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | static const struct platform_device_id s2mps11_pmic_id[] = { | |
334 | { "s2mps11-pmic", 0}, | |
335 | { }, | |
336 | }; | |
337 | MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id); | |
338 | ||
339 | static struct platform_driver s2mps11_pmic_driver = { | |
340 | .driver = { | |
341 | .name = "s2mps11-pmic", | |
342 | .owner = THIS_MODULE, | |
343 | }, | |
344 | .probe = s2mps11_pmic_probe, | |
345 | .remove = __devexit_p(s2mps11_pmic_remove), | |
346 | .id_table = s2mps11_pmic_id, | |
347 | }; | |
348 | ||
349 | static int __init s2mps11_pmic_init(void) | |
350 | { | |
351 | return platform_driver_register(&s2mps11_pmic_driver); | |
352 | } | |
353 | subsys_initcall(s2mps11_pmic_init); | |
354 | ||
355 | static void __exit s2mps11_pmic_exit(void) | |
356 | { | |
357 | platform_driver_unregister(&s2mps11_pmic_driver); | |
358 | } | |
359 | module_exit(s2mps11_pmic_exit); | |
360 | ||
361 | /* Module information */ | |
362 | MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); | |
363 | MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver"); | |
364 | MODULE_LICENSE("GPL"); |