regulator: lp8788-buck: Kill _gpio_request function
[linux-3.10.git] / drivers / regulator / 88pm8607.c
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/i2c.h>
15 #include <linux/of.h>
16 #include <linux/regulator/of_regulator.h>
17 #include <linux/platform_device.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regulator/machine.h>
20 #include <linux/mfd/88pm860x.h>
21 #include <linux/module.h>
22
23 struct pm8607_regulator_info {
24         struct regulator_desc   desc;
25         struct pm860x_chip      *chip;
26         struct regulator_dev    *regulator;
27         struct i2c_client       *i2c;
28         struct i2c_client       *i2c_8606;
29
30         unsigned int    *vol_table;
31         unsigned int    *vol_suspend;
32
33         int     update_reg;
34         int     update_bit;
35         int     slope_double;
36 };
37
38 static const unsigned int BUCK1_table[] = {
39          725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
40          925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
41         1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
42         1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
43               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
44          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
45          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
46          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
47 };
48
49 static const unsigned int BUCK1_suspend_table[] = {
50               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
51          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
52          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
53          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
54          800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
55         1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
56         1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
57         1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
58 };
59
60 static const unsigned int BUCK2_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 BUCK2_suspend_table[] = {
72               0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
73          400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
74          800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
75         1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
76         1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
77         2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
78         2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
79         2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
80 };
81
82 static const unsigned int BUCK3_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 BUCK3_suspend_table[] = {
94               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
95          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
96          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
97          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
98          800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
99         1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
100         1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
101         1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
102 };
103
104 static const unsigned int LDO1_table[] = {
105         1800000, 1200000, 2800000, 0,
106 };
107
108 static const unsigned int LDO1_suspend_table[] = {
109         1800000, 1200000, 0, 0,
110 };
111
112 static const unsigned int LDO2_table[] = {
113         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
114 };
115
116 static const unsigned int LDO2_suspend_table[] = {
117         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
118 };
119
120 static const unsigned int LDO3_table[] = {
121         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
122 };
123
124 static const unsigned int LDO3_suspend_table[] = {
125         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
126 };
127
128 static const unsigned int LDO4_table[] = {
129         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
130 };
131
132 static const unsigned int LDO4_suspend_table[] = {
133         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
134 };
135
136 static const unsigned int LDO5_table[] = {
137         2900000, 3000000, 3100000, 3300000,
138 };
139
140 static const unsigned int LDO5_suspend_table[] = {
141         2900000, 0, 0, 0,
142 };
143
144 static const unsigned int LDO6_table[] = {
145         1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
146 };
147
148 static const unsigned int LDO6_suspend_table[] = {
149         1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
150 };
151
152 static const unsigned int LDO7_table[] = {
153         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
154 };
155
156 static const unsigned int LDO7_suspend_table[] = {
157         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
158 };
159
160 static const unsigned int LDO8_table[] = {
161         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
162 };
163
164 static const unsigned int LDO8_suspend_table[] = {
165         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
166 };
167
168 static const unsigned int LDO9_table[] = {
169         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
170 };
171
172 static const unsigned int LDO9_suspend_table[] = {
173         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
174 };
175
176 static const unsigned int LDO10_table[] = {
177         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
178         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
179 };
180
181 static const unsigned int LDO10_suspend_table[] = {
182         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
183         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
184 };
185
186 static const unsigned int LDO12_table[] = {
187         1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
188         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
189 };
190
191 static const unsigned int LDO12_suspend_table[] = {
192         1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
193         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
194 };
195
196 static const unsigned int LDO13_table[] = {
197         1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
198 };
199
200 static const unsigned int LDO13_suspend_table[] = {
201         0,
202 };
203
204 static const unsigned int LDO14_table[] = {
205         1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
206 };
207
208 static const unsigned int LDO14_suspend_table[] = {
209         1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
210 };
211
212 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
213 {
214         struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
215         int ret = -EINVAL;
216
217         if (info->vol_table && (index < rdev->desc->n_voltages)) {
218                 ret = info->vol_table[index];
219                 if (info->slope_double)
220                         ret <<= 1;
221         }
222         return ret;
223 }
224
225 static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
226 {
227         struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
228         uint8_t val;
229         int ret;
230
231         val = (uint8_t)(selector << (ffs(rdev->desc->vsel_mask) - 1));
232
233         ret = pm860x_set_bits(info->i2c, rdev->desc->vsel_reg,
234                               rdev->desc->vsel_mask, val);
235         if (ret)
236                 return ret;
237         switch (info->desc.id) {
238         case PM8607_ID_BUCK1:
239         case PM8607_ID_BUCK3:
240                 ret = pm860x_set_bits(info->i2c, info->update_reg,
241                                       1 << info->update_bit,
242                                       1 << info->update_bit);
243                 break;
244         }
245         return ret;
246 }
247
248 static int pm8606_preg_enable(struct regulator_dev *rdev)
249 {
250         struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
251
252         return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
253                                1 << rdev->desc->enable_mask, 0);
254 }
255
256 static int pm8606_preg_disable(struct regulator_dev *rdev)
257 {
258         struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
259
260         return pm860x_set_bits(info->i2c, rdev->desc->enable_reg,
261                                1 << rdev->desc->enable_mask,
262                                1 << rdev->desc->enable_mask);
263 }
264
265 static int pm8606_preg_is_enabled(struct regulator_dev *rdev)
266 {
267         struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
268         int ret;
269
270         ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg);
271         if (ret < 0)
272                 return ret;
273
274         return !((unsigned char)ret & (1 << rdev->desc->enable_mask));
275 }
276
277 static struct regulator_ops pm8607_regulator_ops = {
278         .list_voltage   = pm8607_list_voltage,
279         .set_voltage_sel = pm8607_set_voltage_sel,
280         .get_voltage_sel = regulator_get_voltage_sel_regmap,
281         .enable = regulator_enable_regmap,
282         .disable = regulator_disable_regmap,
283         .is_enabled = regulator_is_enabled_regmap,
284 };
285
286 static struct regulator_ops pm8606_preg_ops = {
287         .enable         = pm8606_preg_enable,
288         .disable        = pm8606_preg_disable,
289         .is_enabled     = pm8606_preg_is_enabled,
290 };
291
292 #define PM8606_PREG(ereg, ebit)                                         \
293 {                                                                       \
294         .desc   = {                                                     \
295                 .name   = "PREG",                                       \
296                 .ops    = &pm8606_preg_ops,                             \
297                 .type   = REGULATOR_CURRENT,                            \
298                 .id     = PM8606_ID_PREG,                               \
299                 .owner  = THIS_MODULE,                                  \
300                 .enable_reg = PM8606_##ereg,                            \
301                 .enable_mask = (ebit),                                  \
302         },                                                              \
303 }
304
305 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit)                        \
306 {                                                                       \
307         .desc   = {                                                     \
308                 .name   = #vreg,                                        \
309                 .ops    = &pm8607_regulator_ops,                        \
310                 .type   = REGULATOR_VOLTAGE,                            \
311                 .id     = PM8607_ID_##vreg,                             \
312                 .owner  = THIS_MODULE,                                  \
313                 .n_voltages = ARRAY_SIZE(vreg##_table),                 \
314                 .vsel_reg = PM8607_##vreg,                              \
315                 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1,              \
316                 .enable_reg = PM8607_##ereg,                            \
317                 .enable_mask = 1 << (ebit),                             \
318         },                                                              \
319         .update_reg     = PM8607_##ureg,                                \
320         .update_bit     = (ubit),                                       \
321         .slope_double   = (0),                                          \
322         .vol_table      = (unsigned int *)&vreg##_table,                \
323         .vol_suspend    = (unsigned int *)&vreg##_suspend_table,        \
324 }
325
326 #define PM8607_LDO(_id, vreg, shift, ereg, ebit)                        \
327 {                                                                       \
328         .desc   = {                                                     \
329                 .name   = "LDO" #_id,                                   \
330                 .ops    = &pm8607_regulator_ops,                        \
331                 .type   = REGULATOR_VOLTAGE,                            \
332                 .id     = PM8607_ID_LDO##_id,                           \
333                 .owner  = THIS_MODULE,                                  \
334                 .n_voltages = ARRAY_SIZE(LDO##_id##_table),             \
335                 .vsel_reg = PM8607_##vreg,                              \
336                 .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
337                 .enable_reg = PM8607_##ereg,                            \
338                 .enable_mask = 1 << (ebit),                             \
339         },                                                              \
340         .slope_double   = (0),                                          \
341         .vol_table      = (unsigned int *)&LDO##_id##_table,            \
342         .vol_suspend    = (unsigned int *)&LDO##_id##_suspend_table,    \
343 }
344
345 static struct pm8607_regulator_info pm8607_regulator_info[] = {
346         PM8607_DVC(BUCK1, GO, 0, SUPPLIES_EN11, 0),
347         PM8607_DVC(BUCK2, GO, 1, SUPPLIES_EN11, 1),
348         PM8607_DVC(BUCK3, GO, 2, SUPPLIES_EN11, 2),
349
350         PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
351         PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
352         PM8607_LDO(3,         LDO3, 0, SUPPLIES_EN11, 5),
353         PM8607_LDO(4,         LDO4, 0, SUPPLIES_EN11, 6),
354         PM8607_LDO(5,         LDO5, 0, SUPPLIES_EN11, 7),
355         PM8607_LDO(6,         LDO6, 0, SUPPLIES_EN12, 0),
356         PM8607_LDO(7,         LDO7, 0, SUPPLIES_EN12, 1),
357         PM8607_LDO(8,         LDO8, 0, SUPPLIES_EN12, 2),
358         PM8607_LDO(9,         LDO9, 0, SUPPLIES_EN12, 3),
359         PM8607_LDO(10,        LDO10, 0, SUPPLIES_EN12, 4),
360         PM8607_LDO(12,        LDO12, 0, SUPPLIES_EN12, 5),
361         PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
362         PM8607_LDO(14,        LDO14, 0, SUPPLIES_EN12, 6),
363 };
364
365 static struct pm8607_regulator_info pm8606_regulator_info[] = {
366         PM8606_PREG(PREREGULATORB, 5),
367 };
368
369 #ifdef CONFIG_OF
370 static int pm8607_regulator_dt_init(struct platform_device *pdev,
371                                     struct pm8607_regulator_info *info,
372                                     struct regulator_config *config)
373 {
374         struct device_node *nproot, *np;
375         nproot = pdev->dev.parent->of_node;
376         if (!nproot)
377                 return -ENODEV;
378         nproot = of_find_node_by_name(nproot, "regulators");
379         if (!nproot) {
380                 dev_err(&pdev->dev, "failed to find regulators node\n");
381                 return -ENODEV;
382         }
383         for_each_child_of_node(nproot, np) {
384                 if (!of_node_cmp(np->name, info->desc.name)) {
385                         config->init_data =
386                                 of_get_regulator_init_data(&pdev->dev, np);
387                         config->of_node = np;
388                         break;
389                 }
390         }
391         return 0;
392 }
393 #else
394 #define pm8607_regulator_dt_init(x, y, z)       (-1)
395 #endif
396
397 static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
398 {
399         struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
400         struct pm8607_regulator_info *info = NULL;
401         struct regulator_init_data *pdata = pdev->dev.platform_data;
402         struct regulator_config config = { };
403         struct resource *res;
404         int i;
405
406         res = platform_get_resource(pdev, IORESOURCE_REG, 0);
407         if (res) {
408                 /* There're resources in 88PM8607 regulator driver */
409                 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
410                         info = &pm8607_regulator_info[i];
411                         if (info->desc.vsel_reg == res->start)
412                                 break;
413                 }
414                 if (i == ARRAY_SIZE(pm8607_regulator_info)) {
415                         dev_err(&pdev->dev, "Failed to find regulator %llu\n",
416                                 (unsigned long long)res->start);
417                         return -EINVAL;
418                 }
419         } else {
420                 /* There's no resource in 88PM8606 PREG regulator driver */
421                 info = &pm8606_regulator_info[0];
422                 /* i is used to check regulator ID */
423                 i = -1;
424         }
425         info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
426         info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
427                         chip->client;
428         info->chip = chip;
429
430         /* check DVC ramp slope double */
431         if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double)
432                 info->slope_double = 1;
433
434         config.dev = &pdev->dev;
435         config.driver_data = info;
436
437         if (pm8607_regulator_dt_init(pdev, info, &config))
438                 if (pdata)
439                         config.init_data = pdata;
440
441         if (chip->id == CHIP_PM8607)
442                 config.regmap = chip->regmap;
443         else
444                 config.regmap = chip->regmap_companion;
445
446         info->regulator = regulator_register(&info->desc, &config);
447         if (IS_ERR(info->regulator)) {
448                 dev_err(&pdev->dev, "failed to register regulator %s\n",
449                         info->desc.name);
450                 return PTR_ERR(info->regulator);
451         }
452
453         platform_set_drvdata(pdev, info);
454         return 0;
455 }
456
457 static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
458 {
459         struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
460
461         platform_set_drvdata(pdev, NULL);
462         regulator_unregister(info->regulator);
463         return 0;
464 }
465
466 static struct platform_device_id pm8607_regulator_driver_ids[] = {
467         {
468                 .name   = "88pm860x-regulator",
469                 .driver_data    = 0,
470         }, {
471                 .name   = "88pm860x-preg",
472                 .driver_data    = 0,
473         },
474         { },
475 };
476 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
477
478 static struct platform_driver pm8607_regulator_driver = {
479         .driver         = {
480                 .name   = "88pm860x-regulator",
481                 .owner  = THIS_MODULE,
482         },
483         .probe          = pm8607_regulator_probe,
484         .remove         = __devexit_p(pm8607_regulator_remove),
485         .id_table       = pm8607_regulator_driver_ids,
486 };
487
488 static int __init pm8607_regulator_init(void)
489 {
490         return platform_driver_register(&pm8607_regulator_driver);
491 }
492 subsys_initcall(pm8607_regulator_init);
493
494 static void __exit pm8607_regulator_exit(void)
495 {
496         platform_driver_unregister(&pm8607_regulator_driver);
497 }
498 module_exit(pm8607_regulator_exit);
499
500 MODULE_LICENSE("GPL");
501 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
502 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
503 MODULE_ALIAS("platform:88pm8607-regulator");