1/*
2 * Regulators driver for Marvell 88PM8607
3 *
4 * Copyright (C) 2009 Marvell International Ltd.
5 * Haojian Zhuang <haojian.zhuang@marvell.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/err.h>
14#include <linux/of.h>
15#include <linux/regulator/of_regulator.h>
16#include <linux/platform_device.h>
17#include <linux/regulator/driver.h>
18#include <linux/regulator/machine.h>
19#include <linux/mfd/88pm860x.h>
20#include <linux/module.h>
21
22struct pm8607_regulator_info {
23 struct regulator_desc desc;
24
25 unsigned int *vol_suspend;
26
27 int slope_double;
28};
29
30static const unsigned int BUCK1_table[] = {
31 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
32 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
33 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
34 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
35 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
36 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
37 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
38 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
39};
40
41static const unsigned int BUCK1_suspend_table[] = {
42 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
43 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
44 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
45 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
46 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
47 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
48 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
49 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
50};
51
52static const unsigned int BUCK2_table[] = {
53 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
54 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
55 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
56 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
57 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
58 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
59 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
60 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
61};
62
63static const unsigned int BUCK2_suspend_table[] = {
64 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
65 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
66 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
67 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
68 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
69 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
70 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
71 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
72};
73
74static const unsigned int BUCK3_table[] = {
75 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
76 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
77 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
78 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
79 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
80 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
81 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
82 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
83};
84
85static const unsigned int BUCK3_suspend_table[] = {
86 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
87 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
88 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
89 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
90 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
91 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
92 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
93 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
94};
95
96static const unsigned int LDO1_table[] = {
97 1800000, 1200000, 2800000, 0,
98};
99
100static const unsigned int LDO1_suspend_table[] = {
101 1800000, 1200000, 0, 0,
102};
103
104static const unsigned int LDO2_table[] = {
105 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
106};
107
108static const unsigned int LDO2_suspend_table[] = {
109 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
110};
111
112static const unsigned int LDO3_table[] = {
113 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
114};
115
116static const unsigned int LDO3_suspend_table[] = {
117 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
118};
119
120static const unsigned int LDO4_table[] = {
121 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
122};
123
124static const unsigned int LDO4_suspend_table[] = {
125 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
126};
127
128static const unsigned int LDO5_table[] = {
129 2900000, 3000000, 3100000, 3300000,
130};
131
132static const unsigned int LDO5_suspend_table[] = {
133 2900000, 0, 0, 0,
134};
135
136static const unsigned int LDO6_table[] = {
137 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
138};
139
140static const unsigned int LDO6_suspend_table[] = {
141 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
142};
143
144static const unsigned int LDO7_table[] = {
145 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
146};
147
148static const unsigned int LDO7_suspend_table[] = {
149 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
150};
151
152static const unsigned int LDO8_table[] = {
153 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
154};
155
156static const unsigned int LDO8_suspend_table[] = {
157 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
158};
159
160static const unsigned int LDO9_table[] = {
161 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
162};
163
164static const unsigned int LDO9_suspend_table[] = {
165 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
166};
167
168static const unsigned int LDO10_table[] = {
169 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
170 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
171};
172
173static const unsigned int LDO10_suspend_table[] = {
174 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
175 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
176};
177
178static const unsigned int LDO12_table[] = {
179 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
180 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
181};
182
183static const unsigned int LDO12_suspend_table[] = {
184 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
185 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
186};
187
188static const unsigned int LDO13_table[] = {
189 1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
190};
191
192static const unsigned int LDO13_suspend_table[] = {
193 0,
194};
195
196static const unsigned int LDO14_table[] = {
197 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
198};
199
200static const unsigned int LDO14_suspend_table[] = {
201 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
202};
203
204static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
205{
206 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
207 int ret;
208
209 ret = regulator_list_voltage_table(rdev, index);
210 if (ret < 0)
211 return ret;
212
213 if (info->slope_double)
214 ret <<= 1;
215
216 return ret;
217}
218
219static const struct regulator_ops pm8607_regulator_ops = {
220 .list_voltage = pm8607_list_voltage,
221 .set_voltage_sel = regulator_set_voltage_sel_regmap,
222 .get_voltage_sel = regulator_get_voltage_sel_regmap,
223 .enable = regulator_enable_regmap,
224 .disable = regulator_disable_regmap,
225 .is_enabled = regulator_is_enabled_regmap,
226};
227
228static const struct regulator_ops pm8606_preg_ops = {
229 .enable = regulator_enable_regmap,
230 .disable = regulator_disable_regmap,
231 .is_enabled = regulator_is_enabled_regmap,
232};
233
234#define PM8606_PREG(ereg, ebit) \
235{ \
236 .desc = { \
237 .name = "PREG", \
238 .ops = &pm8606_preg_ops, \
239 .type = REGULATOR_CURRENT, \
240 .id = PM8606_ID_PREG, \
241 .owner = THIS_MODULE, \
242 .enable_reg = PM8606_##ereg, \
243 .enable_mask = (ebit), \
244 .enable_is_inverted = true, \
245 }, \
246}
247
248#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
249{ \
250 .desc = { \
251 .name = #vreg, \
252 .ops = &pm8607_regulator_ops, \
253 .type = REGULATOR_VOLTAGE, \
254 .id = PM8607_ID_##vreg, \
255 .owner = THIS_MODULE, \
256 .volt_table = vreg##_table, \
257 .n_voltages = ARRAY_SIZE(vreg##_table), \
258 .vsel_reg = PM8607_##vreg, \
259 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \
260 .apply_reg = PM8607_##ureg, \
261 .apply_bit = (ubit), \
262 .enable_reg = PM8607_##ereg, \
263 .enable_mask = 1 << (ebit), \
264 }, \
265 .slope_double = (0), \
266 .vol_suspend = (unsigned int *)&vreg##_suspend_table, \
267}
268
269#define PM8607_LDO(_id, vreg, shift, ereg, ebit) \
270{ \
271 .desc = { \
272 .name = "LDO" #_id, \
273 .ops = &pm8607_regulator_ops, \
274 .type = REGULATOR_VOLTAGE, \
275 .id = PM8607_ID_LDO##_id, \
276 .owner = THIS_MODULE, \
277 .volt_table = LDO##_id##_table, \
278 .n_voltages = ARRAY_SIZE(LDO##_id##_table), \
279 .vsel_reg = PM8607_##vreg, \
280 .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
281 .enable_reg = PM8607_##ereg, \
282 .enable_mask = 1 << (ebit), \
283 }, \
284 .slope_double = (0), \
285 .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
286}
287
288static struct pm8607_regulator_info pm8607_regulator_info[] = {
289 PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
290 PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
291 PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
292
293 PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3),
294 PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4),
295 PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5),
296 PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6),
297 PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7),
298 PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0),
299 PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1),
300 PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2),
301 PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3),
302 PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4),
303 PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5),
304 PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
305 PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
306};
307
308static struct pm8607_regulator_info pm8606_regulator_info[] = {
309 PM8606_PREG(PREREGULATORB, 5),
310};
311
312#ifdef CONFIG_OF
313static int pm8607_regulator_dt_init(struct platform_device *pdev,
314 struct pm8607_regulator_info *info,
315 struct regulator_config *config)
316{
317 struct device_node *nproot, *np;
318 nproot = pdev->dev.parent->of_node;
319 if (!nproot)
320 return -ENODEV;
321 nproot = of_get_child_by_name(nproot, "regulators");
322 if (!nproot) {
323 dev_err(&pdev->dev, "failed to find regulators node\n");
324 return -ENODEV;
325 }
326 for_each_child_of_node(nproot, np) {
327 if (of_node_name_eq(np, info->desc.name)) {
328 config->init_data =
329 of_get_regulator_init_data(&pdev->dev, np,
330 &info->desc);
331 config->of_node = np;
332 break;
333 }
334 }
335 of_node_put(nproot);
336 return 0;
337}
338#else
339#define pm8607_regulator_dt_init(x, y, z) (-1)
340#endif
341
342static int pm8607_regulator_probe(struct platform_device *pdev)
343{
344 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
345 struct pm8607_regulator_info *info = NULL;
346 struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
347 struct regulator_config config = { };
348 struct regulator_dev *rdev;
349 struct resource *res;
350 int i;
351
352 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
353 if (res) {
354 /* There're resources in 88PM8607 regulator driver */
355 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
356 info = &pm8607_regulator_info[i];
357 if (info->desc.vsel_reg == res->start)
358 break;
359 }
360 if (i == ARRAY_SIZE(pm8607_regulator_info)) {
361 dev_err(&pdev->dev, "Failed to find regulator %llu\n",
362 (unsigned long long)res->start);
363 return -EINVAL;
364 }
365 } else {
366 /* There's no resource in 88PM8606 PREG regulator driver */
367 info = &pm8606_regulator_info[0];
368 /* i is used to check regulator ID */
369 i = -1;
370 }
371
372 /* check DVC ramp slope double */
373 if ((i == PM8607_ID_BUCK3) && chip->buck3_double)
374 info->slope_double = 1;
375
376 config.dev = &pdev->dev;
377 config.driver_data = info;
378
379 if (pm8607_regulator_dt_init(pdev, info, &config))
380 if (pdata)
381 config.init_data = pdata;
382
383 if (chip->id == CHIP_PM8607)
384 config.regmap = chip->regmap;
385 else
386 config.regmap = chip->regmap_companion;
387
388 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
389 if (IS_ERR(rdev)) {
390 dev_err(&pdev->dev, "failed to register regulator %s\n",
391 info->desc.name);
392 return PTR_ERR(rdev);
393 }
394
395 platform_set_drvdata(pdev, info);
396 return 0;
397}
398
399static const struct platform_device_id pm8607_regulator_driver_ids[] = {
400 {
401 .name = "88pm860x-regulator",
402 .driver_data = 0,
403 }, {
404 .name = "88pm860x-preg",
405 .driver_data = 0,
406 },
407 { },
408};
409MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
410
411static struct platform_driver pm8607_regulator_driver = {
412 .driver = {
413 .name = "88pm860x-regulator",
414 },
415 .probe = pm8607_regulator_probe,
416 .id_table = pm8607_regulator_driver_ids,
417};
418
419static int __init pm8607_regulator_init(void)
420{
421 return platform_driver_register(&pm8607_regulator_driver);
422}
423subsys_initcall(pm8607_regulator_init);
424
425static void __exit pm8607_regulator_exit(void)
426{
427 platform_driver_unregister(&pm8607_regulator_driver);
428}
429module_exit(pm8607_regulator_exit);
430
431MODULE_LICENSE("GPL");
432MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
433MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
434MODULE_ALIAS("platform:88pm8607-regulator");
435