1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Regulators driver for Marvell 88PM8607
4 *
5 * Copyright (C) 2009 Marvell International Ltd.
6 * Haojian Zhuang <haojian.zhuang@marvell.com>
7 */
8 #include <linux/kernel.h>
9 #include <linux/init.h>
10 #include <linux/err.h>
11 #include <linux/of.h>
12 #include <linux/regulator/of_regulator.h>
13 #include <linux/platform_device.h>
14 #include <linux/regulator/driver.h>
15 #include <linux/regulator/machine.h>
16 #include <linux/mfd/88pm860x.h>
17 #include <linux/module.h>
18
19 struct pm8607_regulator_info {
20 struct regulator_desc desc;
21
22 unsigned int *vol_suspend;
23
24 int slope_double;
25 };
26
27 static const unsigned int BUCK1_table[] = {
28 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
29 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
30 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
31 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
32 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
33 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
34 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
35 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
36 };
37
38 static const unsigned int BUCK1_suspend_table[] = {
39 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
40 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
41 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
42 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
43 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
44 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
45 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
46 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
47 };
48
49 static const unsigned int BUCK2_table[] = {
50 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
51 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
52 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
53 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
54 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
55 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
56 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
57 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
58 };
59
60 static const unsigned int BUCK2_suspend_table[] = {
61 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
62 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
63 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
64 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
65 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
66 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
67 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
68 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
69 };
70
71 static const unsigned int BUCK3_table[] = {
72 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
73 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
74 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
75 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
76 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
77 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
78 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
79 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
80 };
81
82 static const unsigned int BUCK3_suspend_table[] = {
83 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
84 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
85 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
86 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
87 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
88 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
89 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
90 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
91 };
92
93 static const unsigned int LDO1_table[] = {
94 1800000, 1200000, 2800000, 0,
95 };
96
97 static const unsigned int LDO1_suspend_table[] = {
98 1800000, 1200000, 0, 0,
99 };
100
101 static const unsigned int LDO2_table[] = {
102 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
103 };
104
105 static const unsigned int LDO2_suspend_table[] = {
106 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
107 };
108
109 static const unsigned int LDO3_table[] = {
110 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
111 };
112
113 static const unsigned int LDO3_suspend_table[] = {
114 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
115 };
116
117 static const unsigned int LDO4_table[] = {
118 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
119 };
120
121 static const unsigned int LDO4_suspend_table[] = {
122 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
123 };
124
125 static const unsigned int LDO5_table[] = {
126 2900000, 3000000, 3100000, 3300000,
127 };
128
129 static const unsigned int LDO5_suspend_table[] = {
130 2900000, 0, 0, 0,
131 };
132
133 static const unsigned int LDO6_table[] = {
134 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
135 };
136
137 static const unsigned int LDO6_suspend_table[] = {
138 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
139 };
140
141 static const unsigned int LDO7_table[] = {
142 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
143 };
144
145 static const unsigned int LDO7_suspend_table[] = {
146 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
147 };
148
149 static const unsigned int LDO8_table[] = {
150 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
151 };
152
153 static const unsigned int LDO8_suspend_table[] = {
154 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
155 };
156
157 static const unsigned int LDO9_table[] = {
158 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
159 };
160
161 static const unsigned int LDO9_suspend_table[] = {
162 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
163 };
164
165 static const unsigned int LDO10_table[] = {
166 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
167 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
168 };
169
170 static const unsigned int LDO10_suspend_table[] = {
171 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
172 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
173 };
174
175 static const unsigned int LDO12_table[] = {
176 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
177 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
178 };
179
180 static const unsigned int LDO12_suspend_table[] = {
181 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
182 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
183 };
184
185 static const unsigned int LDO13_table[] = {
186 1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
187 };
188
189 static const unsigned int LDO13_suspend_table[] = {
190 0,
191 };
192
193 static const unsigned int LDO14_table[] = {
194 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
195 };
196
197 static const unsigned int LDO14_suspend_table[] = {
198 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
199 };
200
pm8607_list_voltage(struct regulator_dev * rdev,unsigned index)201 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
202 {
203 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
204 int ret;
205
206 ret = regulator_list_voltage_table(rdev, index);
207 if (ret < 0)
208 return ret;
209
210 if (info->slope_double)
211 ret <<= 1;
212
213 return ret;
214 }
215
216 static const struct regulator_ops pm8607_regulator_ops = {
217 .list_voltage = pm8607_list_voltage,
218 .set_voltage_sel = regulator_set_voltage_sel_regmap,
219 .get_voltage_sel = regulator_get_voltage_sel_regmap,
220 .enable = regulator_enable_regmap,
221 .disable = regulator_disable_regmap,
222 .is_enabled = regulator_is_enabled_regmap,
223 };
224
225 static const struct regulator_ops pm8606_preg_ops = {
226 .enable = regulator_enable_regmap,
227 .disable = regulator_disable_regmap,
228 .is_enabled = regulator_is_enabled_regmap,
229 };
230
231 #define PM8606_PREG(ereg, ebit) \
232 { \
233 .desc = { \
234 .name = "PREG", \
235 .of_match = of_match_ptr("PREG"), \
236 .regulators_node = of_match_ptr("regulators"), \
237 .ops = &pm8606_preg_ops, \
238 .type = REGULATOR_CURRENT, \
239 .id = PM8606_ID_PREG, \
240 .owner = THIS_MODULE, \
241 .enable_reg = PM8606_##ereg, \
242 .enable_mask = (ebit), \
243 .enable_is_inverted = true, \
244 }, \
245 }
246
247 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
248 { \
249 .desc = { \
250 .name = #vreg, \
251 .of_match = of_match_ptr(#vreg), \
252 .regulators_node = of_match_ptr("regulators"), \
253 .ops = &pm8607_regulator_ops, \
254 .type = REGULATOR_VOLTAGE, \
255 .id = PM8607_ID_##vreg, \
256 .owner = THIS_MODULE, \
257 .volt_table = vreg##_table, \
258 .n_voltages = ARRAY_SIZE(vreg##_table), \
259 .vsel_reg = PM8607_##vreg, \
260 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \
261 .apply_reg = PM8607_##ureg, \
262 .apply_bit = (ubit), \
263 .enable_reg = PM8607_##ereg, \
264 .enable_mask = 1 << (ebit), \
265 }, \
266 .slope_double = (0), \
267 .vol_suspend = (unsigned int *)&vreg##_suspend_table, \
268 }
269
270 #define PM8607_LDO(_id, vreg, shift, ereg, ebit) \
271 { \
272 .desc = { \
273 .name = "LDO" #_id, \
274 .of_match = of_match_ptr("LDO" #_id), \
275 .regulators_node = of_match_ptr("regulators"), \
276 .ops = &pm8607_regulator_ops, \
277 .type = REGULATOR_VOLTAGE, \
278 .id = PM8607_ID_LDO##_id, \
279 .owner = THIS_MODULE, \
280 .volt_table = LDO##_id##_table, \
281 .n_voltages = ARRAY_SIZE(LDO##_id##_table), \
282 .vsel_reg = PM8607_##vreg, \
283 .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
284 .enable_reg = PM8607_##ereg, \
285 .enable_mask = 1 << (ebit), \
286 }, \
287 .slope_double = (0), \
288 .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
289 }
290
291 static struct pm8607_regulator_info pm8607_regulator_info[] = {
292 PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
293 PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
294 PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
295
296 PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3),
297 PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4),
298 PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5),
299 PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6),
300 PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7),
301 PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0),
302 PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1),
303 PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2),
304 PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3),
305 PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4),
306 PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5),
307 PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
308 PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
309 };
310
311 static struct pm8607_regulator_info pm8606_regulator_info[] = {
312 PM8606_PREG(PREREGULATORB, 5),
313 };
314
pm8607_regulator_probe(struct platform_device * pdev)315 static int pm8607_regulator_probe(struct platform_device *pdev)
316 {
317 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
318 struct pm8607_regulator_info *info = NULL;
319 struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
320 struct regulator_config config = { };
321 struct regulator_dev *rdev;
322 struct resource *res;
323 int i;
324
325 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
326 if (res) {
327 /* There're resources in 88PM8607 regulator driver */
328 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
329 info = &pm8607_regulator_info[i];
330 if (info->desc.vsel_reg == res->start)
331 break;
332 }
333 if (i == ARRAY_SIZE(pm8607_regulator_info)) {
334 dev_err(&pdev->dev, "Failed to find regulator %llu\n",
335 (unsigned long long)res->start);
336 return -EINVAL;
337 }
338 } else {
339 /* There's no resource in 88PM8606 PREG regulator driver */
340 info = &pm8606_regulator_info[0];
341 /* i is used to check regulator ID */
342 i = -1;
343 }
344
345 /* check DVC ramp slope double */
346 if ((i == PM8607_ID_BUCK3) && chip->buck3_double)
347 info->slope_double = 1;
348
349 config.dev = chip->dev;
350 config.driver_data = info;
351
352 if (pdata)
353 config.init_data = pdata;
354
355 if (chip->id == CHIP_PM8607)
356 config.regmap = chip->regmap;
357 else
358 config.regmap = chip->regmap_companion;
359
360 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
361 if (IS_ERR(rdev)) {
362 dev_err(&pdev->dev, "failed to register regulator %s\n",
363 info->desc.name);
364 return PTR_ERR(rdev);
365 }
366
367 platform_set_drvdata(pdev, info);
368 return 0;
369 }
370
371 static const struct platform_device_id pm8607_regulator_driver_ids[] = {
372 {
373 .name = "88pm860x-regulator",
374 .driver_data = 0,
375 }, {
376 .name = "88pm860x-preg",
377 .driver_data = 0,
378 },
379 { },
380 };
381 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
382
383 static struct platform_driver pm8607_regulator_driver = {
384 .driver = {
385 .name = "88pm860x-regulator",
386 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
387 },
388 .probe = pm8607_regulator_probe,
389 .id_table = pm8607_regulator_driver_ids,
390 };
391
pm8607_regulator_init(void)392 static int __init pm8607_regulator_init(void)
393 {
394 return platform_driver_register(&pm8607_regulator_driver);
395 }
396 subsys_initcall(pm8607_regulator_init);
397
pm8607_regulator_exit(void)398 static void __exit pm8607_regulator_exit(void)
399 {
400 platform_driver_unregister(&pm8607_regulator_driver);
401 }
402 module_exit(pm8607_regulator_exit);
403
404 MODULE_LICENSE("GPL");
405 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
406 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
407 MODULE_ALIAS("platform:88pm8607-regulator");
408