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14#include <linux/bug.h>
15#include <linux/err.h>
16#include <linux/gpio.h>
17#include <linux/slab.h>
18#include <linux/module.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/mfd/samsung/core.h>
23#include <linux/mfd/samsung/s2mps11.h>
24
25struct s2mps11_info {
26 struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX];
27
28 int ramp_delay2;
29 int ramp_delay34;
30 int ramp_delay5;
31 int ramp_delay16;
32 int ramp_delay7810;
33 int ramp_delay9;
34
35 bool buck6_ramp;
36 bool buck2_ramp;
37 bool buck3_ramp;
38 bool buck4_ramp;
39};
40
41static int get_ramp_delay(int ramp_delay)
42{
43 unsigned char cnt = 0;
44
45 ramp_delay /= 6250;
46
47 while (true) {
48 ramp_delay = ramp_delay >> 1;
49 if (ramp_delay == 0)
50 break;
51 cnt++;
52 }
53 return cnt;
54}
55
56static struct regulator_ops s2mps11_ldo_ops = {
57 .list_voltage = regulator_list_voltage_linear,
58 .map_voltage = regulator_map_voltage_linear,
59 .is_enabled = regulator_is_enabled_regmap,
60 .enable = regulator_enable_regmap,
61 .disable = regulator_disable_regmap,
62 .get_voltage_sel = regulator_get_voltage_sel_regmap,
63 .set_voltage_sel = regulator_set_voltage_sel_regmap,
64 .set_voltage_time_sel = regulator_set_voltage_time_sel,
65};
66
67static struct regulator_ops s2mps11_buck_ops = {
68 .list_voltage = regulator_list_voltage_linear,
69 .map_voltage = regulator_map_voltage_linear,
70 .is_enabled = regulator_is_enabled_regmap,
71 .enable = regulator_enable_regmap,
72 .disable = regulator_disable_regmap,
73 .get_voltage_sel = regulator_get_voltage_sel_regmap,
74 .set_voltage_sel = regulator_set_voltage_sel_regmap,
75 .set_voltage_time_sel = regulator_set_voltage_time_sel,
76};
77
78#define regulator_desc_ldo1(num) { \
79 .name = "LDO"#num, \
80 .id = S2MPS11_LDO##num, \
81 .ops = &s2mps11_ldo_ops, \
82 .type = REGULATOR_VOLTAGE, \
83 .owner = THIS_MODULE, \
84 .min_uV = S2MPS11_LDO_MIN, \
85 .uV_step = S2MPS11_LDO_STEP1, \
86 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
87 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
88 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
89 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
90 .enable_mask = S2MPS11_ENABLE_MASK \
91}
92#define regulator_desc_ldo2(num) { \
93 .name = "LDO"#num, \
94 .id = S2MPS11_LDO##num, \
95 .ops = &s2mps11_ldo_ops, \
96 .type = REGULATOR_VOLTAGE, \
97 .owner = THIS_MODULE, \
98 .min_uV = S2MPS11_LDO_MIN, \
99 .uV_step = S2MPS11_LDO_STEP2, \
100 .n_voltages = S2MPS11_LDO_N_VOLTAGES, \
101 .vsel_reg = S2MPS11_REG_L1CTRL + num - 1, \
102 .vsel_mask = S2MPS11_LDO_VSEL_MASK, \
103 .enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
104 .enable_mask = S2MPS11_ENABLE_MASK \
105}
106
107#define regulator_desc_buck1_4(num) { \
108 .name = "BUCK"#num, \
109 .id = S2MPS11_BUCK##num, \
110 .ops = &s2mps11_buck_ops, \
111 .type = REGULATOR_VOLTAGE, \
112 .owner = THIS_MODULE, \
113 .min_uV = S2MPS11_BUCK_MIN1, \
114 .uV_step = S2MPS11_BUCK_STEP1, \
115 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
116 .ramp_delay = S2MPS11_RAMP_DELAY, \
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 .ramp_delay = S2MPS11_RAMP_DELAY, \
133 .vsel_reg = S2MPS11_REG_B5CTRL2, \
134 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
135 .enable_reg = S2MPS11_REG_B5CTRL1, \
136 .enable_mask = S2MPS11_ENABLE_MASK \
137}
138
139#define regulator_desc_buck6_8(num) { \
140 .name = "BUCK"#num, \
141 .id = S2MPS11_BUCK##num, \
142 .ops = &s2mps11_buck_ops, \
143 .type = REGULATOR_VOLTAGE, \
144 .owner = THIS_MODULE, \
145 .min_uV = S2MPS11_BUCK_MIN1, \
146 .uV_step = S2MPS11_BUCK_STEP1, \
147 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
148 .ramp_delay = S2MPS11_RAMP_DELAY, \
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 .ramp_delay = S2MPS11_RAMP_DELAY, \
165 .vsel_reg = S2MPS11_REG_B9CTRL2, \
166 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
167 .enable_reg = S2MPS11_REG_B9CTRL1, \
168 .enable_mask = S2MPS11_ENABLE_MASK \
169}
170
171#define regulator_desc_buck10 { \
172 .name = "BUCK10", \
173 .id = S2MPS11_BUCK10, \
174 .ops = &s2mps11_buck_ops, \
175 .type = REGULATOR_VOLTAGE, \
176 .owner = THIS_MODULE, \
177 .min_uV = S2MPS11_BUCK_MIN2, \
178 .uV_step = S2MPS11_BUCK_STEP2, \
179 .n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
180 .ramp_delay = S2MPS11_RAMP_DELAY, \
181 .vsel_reg = S2MPS11_REG_B10CTRL2, \
182 .vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
183 .enable_reg = S2MPS11_REG_B10CTRL1, \
184 .enable_mask = S2MPS11_ENABLE_MASK \
185}
186
187static struct regulator_desc regulators[] = {
188 regulator_desc_ldo2(1),
189 regulator_desc_ldo1(2),
190 regulator_desc_ldo1(3),
191 regulator_desc_ldo1(4),
192 regulator_desc_ldo1(5),
193 regulator_desc_ldo2(6),
194 regulator_desc_ldo1(7),
195 regulator_desc_ldo1(8),
196 regulator_desc_ldo1(9),
197 regulator_desc_ldo1(10),
198 regulator_desc_ldo2(11),
199 regulator_desc_ldo1(12),
200 regulator_desc_ldo1(13),
201 regulator_desc_ldo1(14),
202 regulator_desc_ldo1(15),
203 regulator_desc_ldo1(16),
204 regulator_desc_ldo1(17),
205 regulator_desc_ldo1(18),
206 regulator_desc_ldo1(19),
207 regulator_desc_ldo1(20),
208 regulator_desc_ldo1(21),
209 regulator_desc_ldo2(22),
210 regulator_desc_ldo2(23),
211 regulator_desc_ldo1(24),
212 regulator_desc_ldo1(25),
213 regulator_desc_ldo1(26),
214 regulator_desc_ldo2(27),
215 regulator_desc_ldo1(28),
216 regulator_desc_ldo1(29),
217 regulator_desc_ldo1(30),
218 regulator_desc_ldo1(31),
219 regulator_desc_ldo1(32),
220 regulator_desc_ldo1(33),
221 regulator_desc_ldo1(34),
222 regulator_desc_ldo1(35),
223 regulator_desc_ldo1(36),
224 regulator_desc_ldo1(37),
225 regulator_desc_ldo1(38),
226 regulator_desc_buck1_4(1),
227 regulator_desc_buck1_4(2),
228 regulator_desc_buck1_4(3),
229 regulator_desc_buck1_4(4),
230 regulator_desc_buck5,
231 regulator_desc_buck6_8(6),
232 regulator_desc_buck6_8(7),
233 regulator_desc_buck6_8(8),
234 regulator_desc_buck9,
235 regulator_desc_buck10,
236};
237
238static int s2mps11_pmic_probe(struct platform_device *pdev)
239{
240 struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
241 struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
242 struct regulator_config config = { };
243 struct s2mps11_info *s2mps11;
244 int i, ret;
245 unsigned char ramp_enable, ramp_reg = 0;
246
247 if (!pdata) {
248 dev_err(pdev->dev.parent, "Platform data not supplied\n");
249 return -ENODEV;
250 }
251
252 s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
253 GFP_KERNEL);
254 if (!s2mps11)
255 return -ENOMEM;
256
257 platform_set_drvdata(pdev, s2mps11);
258
259 s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
260 s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
261 s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
262 s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
263 s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
264 s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
265
266 s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
267 s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
268 s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
269 s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
270
271 ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
272 (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
273
274 if (ramp_enable) {
275 if (s2mps11->buck2_ramp)
276 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) << 6;
277 if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
278 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) << 4;
279 sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable);
280 }
281
282 ramp_reg &= 0x00;
283 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) << 6;
284 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) << 4;
285 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) << 2;
286 ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
287 sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);
288
289 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
290
291 config.dev = &pdev->dev;
292 config.regmap = iodev->regmap;
293 config.init_data = pdata->regulators[i].initdata;
294 config.driver_data = s2mps11;
295
296 s2mps11->rdev[i] = regulator_register(®ulators[i], &config);
297 if (IS_ERR(s2mps11->rdev[i])) {
298 ret = PTR_ERR(s2mps11->rdev[i]);
299 dev_err(&pdev->dev, "regulator init failed for %d\n",
300 i);
301 s2mps11->rdev[i] = NULL;
302 goto err;
303 }
304 }
305
306 return 0;
307err:
308 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
309 regulator_unregister(s2mps11->rdev[i]);
310
311 return ret;
312}
313
314static int s2mps11_pmic_remove(struct platform_device *pdev)
315{
316 struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
317 int i;
318
319 for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
320 regulator_unregister(s2mps11->rdev[i]);
321
322 return 0;
323}
324
325static const struct platform_device_id s2mps11_pmic_id[] = {
326 { "s2mps11-pmic", 0},
327 { },
328};
329MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
330
331static struct platform_driver s2mps11_pmic_driver = {
332 .driver = {
333 .name = "s2mps11-pmic",
334 .owner = THIS_MODULE,
335 },
336 .probe = s2mps11_pmic_probe,
337 .remove = s2mps11_pmic_remove,
338 .id_table = s2mps11_pmic_id,
339};
340
341static int __init s2mps11_pmic_init(void)
342{
343 return platform_driver_register(&s2mps11_pmic_driver);
344}
345subsys_initcall(s2mps11_pmic_init);
346
347static void __exit s2mps11_pmic_exit(void)
348{
349 platform_driver_unregister(&s2mps11_pmic_driver);
350}
351module_exit(s2mps11_pmic_exit);
352
353
354MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
355MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
356MODULE_LICENSE("GPL");
357
