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Linux/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     slope_double;
 34 };
 35 
 36 static const unsigned int BUCK1_table[] = {
 37          725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
 38          925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
 39         1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
 40         1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
 41               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 42          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 43          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 44          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 45 };
 46 
 47 static const unsigned int BUCK1_suspend_table[] = {
 48               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 49          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 50          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 51          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 52          800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
 53         1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
 54         1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
 55         1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
 56 };
 57 
 58 static const unsigned int BUCK2_table[] = {
 59               0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
 60          400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
 61          800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
 62         1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
 63         1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
 64         2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
 65         2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
 66         2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
 67 };
 68 
 69 static const unsigned int BUCK2_suspend_table[] = {
 70               0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
 71          400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
 72          800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
 73         1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
 74         1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
 75         2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
 76         2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
 77         2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
 78 };
 79 
 80 static const unsigned int BUCK3_table[] = {
 81               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 82          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 83          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 84          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 85          800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
 86         1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
 87         1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
 88         1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
 89 };
 90 
 91 static const unsigned int BUCK3_suspend_table[] = {
 92               0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
 93          200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
 94          400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
 95          600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
 96          800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
 97         1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
 98         1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
 99         1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
100 };
101 
102 static const unsigned int LDO1_table[] = {
103         1800000, 1200000, 2800000, 0,
104 };
105 
106 static const unsigned int LDO1_suspend_table[] = {
107         1800000, 1200000, 0, 0,
108 };
109 
110 static const unsigned int LDO2_table[] = {
111         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
112 };
113 
114 static const unsigned int LDO2_suspend_table[] = {
115         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
116 };
117 
118 static const unsigned int LDO3_table[] = {
119         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
120 };
121 
122 static const unsigned int LDO3_suspend_table[] = {
123         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
124 };
125 
126 static const unsigned int LDO4_table[] = {
127         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
128 };
129 
130 static const unsigned int LDO4_suspend_table[] = {
131         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
132 };
133 
134 static const unsigned int LDO5_table[] = {
135         2900000, 3000000, 3100000, 3300000,
136 };
137 
138 static const unsigned int LDO5_suspend_table[] = {
139         2900000, 0, 0, 0,
140 };
141 
142 static const unsigned int LDO6_table[] = {
143         1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
144 };
145 
146 static const unsigned int LDO6_suspend_table[] = {
147         1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
148 };
149 
150 static const unsigned int LDO7_table[] = {
151         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
152 };
153 
154 static const unsigned int LDO7_suspend_table[] = {
155         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
156 };
157 
158 static const unsigned int LDO8_table[] = {
159         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
160 };
161 
162 static const unsigned int LDO8_suspend_table[] = {
163         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
164 };
165 
166 static const unsigned int LDO9_table[] = {
167         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
168 };
169 
170 static const unsigned int LDO9_suspend_table[] = {
171         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
172 };
173 
174 static const unsigned int LDO10_table[] = {
175         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
176         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
177 };
178 
179 static const unsigned int LDO10_suspend_table[] = {
180         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
181         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
182 };
183 
184 static const unsigned int LDO12_table[] = {
185         1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
186         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
187 };
188 
189 static const unsigned int LDO12_suspend_table[] = {
190         1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
191         1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
192 };
193 
194 static const unsigned int LDO13_table[] = {
195         1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
196 };
197 
198 static const unsigned int LDO13_suspend_table[] = {
199         0,
200 };
201 
202 static const unsigned int LDO14_table[] = {
203         1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
204 };
205 
206 static const unsigned int LDO14_suspend_table[] = {
207         1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
208 };
209 
210 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
211 {
212         struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
213         int ret = -EINVAL;
214 
215         if (info->vol_table && (index < rdev->desc->n_voltages)) {
216                 ret = info->vol_table[index];
217                 if (info->slope_double)
218                         ret <<= 1;
219         }
220         return ret;
221 }
222 
223 static struct regulator_ops pm8607_regulator_ops = {
224         .list_voltage   = pm8607_list_voltage,
225         .set_voltage_sel = regulator_set_voltage_sel_regmap,
226         .get_voltage_sel = regulator_get_voltage_sel_regmap,
227         .enable = regulator_enable_regmap,
228         .disable = regulator_disable_regmap,
229         .is_enabled = regulator_is_enabled_regmap,
230 };
231 
232 static struct regulator_ops pm8606_preg_ops = {
233         .enable         = regulator_enable_regmap,
234         .disable        = regulator_disable_regmap,
235         .is_enabled     = regulator_is_enabled_regmap,
236 };
237 
238 #define PM8606_PREG(ereg, ebit)                                         \
239 {                                                                       \
240         .desc   = {                                                     \
241                 .name   = "PREG",                                       \
242                 .ops    = &pm8606_preg_ops,                             \
243                 .type   = REGULATOR_CURRENT,                            \
244                 .id     = PM8606_ID_PREG,                               \
245                 .owner  = THIS_MODULE,                                  \
246                 .enable_reg = PM8606_##ereg,                            \
247                 .enable_mask = (ebit),                                  \
248                 .enable_is_inverted = true,                             \
249         },                                                              \
250 }
251 
252 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit)                        \
253 {                                                                       \
254         .desc   = {                                                     \
255                 .name   = #vreg,                                        \
256                 .ops    = &pm8607_regulator_ops,                        \
257                 .type   = REGULATOR_VOLTAGE,                            \
258                 .id     = PM8607_ID_##vreg,                             \
259                 .owner  = THIS_MODULE,                                  \
260                 .n_voltages = ARRAY_SIZE(vreg##_table),                 \
261                 .vsel_reg = PM8607_##vreg,                              \
262                 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1,              \
263                 .apply_reg = PM8607_##ureg,                             \
264                 .apply_bit = (ubit),                                    \
265                 .enable_reg = PM8607_##ereg,                            \
266                 .enable_mask = 1 << (ebit),                             \
267         },                                                              \
268         .slope_double   = (0),                                          \
269         .vol_table      = (unsigned int *)&vreg##_table,                \
270         .vol_suspend    = (unsigned int *)&vreg##_suspend_table,        \
271 }
272 
273 #define PM8607_LDO(_id, vreg, shift, ereg, ebit)                        \
274 {                                                                       \
275         .desc   = {                                                     \
276                 .name   = "LDO" #_id,                                   \
277                 .ops    = &pm8607_regulator_ops,                        \
278                 .type   = REGULATOR_VOLTAGE,                            \
279                 .id     = PM8607_ID_LDO##_id,                           \
280                 .owner  = THIS_MODULE,                                  \
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_table      = (unsigned int *)&LDO##_id##_table,            \
289         .vol_suspend    = (unsigned int *)&LDO##_id##_suspend_table,    \
290 }
291 
292 static struct pm8607_regulator_info pm8607_regulator_info[] = {
293         PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
294         PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
295         PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
296 
297         PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
298         PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
299         PM8607_LDO(3,         LDO3, 0, SUPPLIES_EN11, 5),
300         PM8607_LDO(4,         LDO4, 0, SUPPLIES_EN11, 6),
301         PM8607_LDO(5,         LDO5, 0, SUPPLIES_EN11, 7),
302         PM8607_LDO(6,         LDO6, 0, SUPPLIES_EN12, 0),
303         PM8607_LDO(7,         LDO7, 0, SUPPLIES_EN12, 1),
304         PM8607_LDO(8,         LDO8, 0, SUPPLIES_EN12, 2),
305         PM8607_LDO(9,         LDO9, 0, SUPPLIES_EN12, 3),
306         PM8607_LDO(10,        LDO10, 0, SUPPLIES_EN12, 4),
307         PM8607_LDO(12,        LDO12, 0, SUPPLIES_EN12, 5),
308         PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
309         PM8607_LDO(14,        LDO14, 0, SUPPLIES_EN12, 6),
310 };
311 
312 static struct pm8607_regulator_info pm8606_regulator_info[] = {
313         PM8606_PREG(PREREGULATORB, 5),
314 };
315 
316 #ifdef CONFIG_OF
317 static int pm8607_regulator_dt_init(struct platform_device *pdev,
318                                     struct pm8607_regulator_info *info,
319                                     struct regulator_config *config)
320 {
321         struct device_node *nproot, *np;
322         nproot = of_node_get(pdev->dev.parent->of_node);
323         if (!nproot)
324                 return -ENODEV;
325         nproot = of_find_node_by_name(nproot, "regulators");
326         if (!nproot) {
327                 dev_err(&pdev->dev, "failed to find regulators node\n");
328                 return -ENODEV;
329         }
330         for_each_child_of_node(nproot, np) {
331                 if (!of_node_cmp(np->name, info->desc.name)) {
332                         config->init_data =
333                                 of_get_regulator_init_data(&pdev->dev, np);
334                         config->of_node = np;
335                         break;
336                 }
337         }
338         of_node_put(nproot);
339         return 0;
340 }
341 #else
342 #define pm8607_regulator_dt_init(x, y, z)       (-1)
343 #endif
344 
345 static int pm8607_regulator_probe(struct platform_device *pdev)
346 {
347         struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
348         struct pm8607_regulator_info *info = NULL;
349         struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
350         struct regulator_config config = { };
351         struct resource *res;
352         int i;
353 
354         res = platform_get_resource(pdev, IORESOURCE_REG, 0);
355         if (res) {
356                 /* There're resources in 88PM8607 regulator driver */
357                 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
358                         info = &pm8607_regulator_info[i];
359                         if (info->desc.vsel_reg == res->start)
360                                 break;
361                 }
362                 if (i == ARRAY_SIZE(pm8607_regulator_info)) {
363                         dev_err(&pdev->dev, "Failed to find regulator %llu\n",
364                                 (unsigned long long)res->start);
365                         return -EINVAL;
366                 }
367         } else {
368                 /* There's no resource in 88PM8606 PREG regulator driver */
369                 info = &pm8606_regulator_info[0];
370                 /* i is used to check regulator ID */
371                 i = -1;
372         }
373         info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
374         info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
375                         chip->client;
376         info->chip = chip;
377 
378         /* check DVC ramp slope double */
379         if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double)
380                 info->slope_double = 1;
381 
382         config.dev = &pdev->dev;
383         config.driver_data = info;
384 
385         if (pm8607_regulator_dt_init(pdev, info, &config))
386                 if (pdata)
387                         config.init_data = pdata;
388 
389         if (chip->id == CHIP_PM8607)
390                 config.regmap = chip->regmap;
391         else
392                 config.regmap = chip->regmap_companion;
393 
394         info->regulator = devm_regulator_register(&pdev->dev, &info->desc,
395                                                   &config);
396         if (IS_ERR(info->regulator)) {
397                 dev_err(&pdev->dev, "failed to register regulator %s\n",
398                         info->desc.name);
399                 return PTR_ERR(info->regulator);
400         }
401 
402         platform_set_drvdata(pdev, info);
403         return 0;
404 }
405 
406 static struct platform_device_id pm8607_regulator_driver_ids[] = {
407         {
408                 .name   = "88pm860x-regulator",
409                 .driver_data    = 0,
410         }, {
411                 .name   = "88pm860x-preg",
412                 .driver_data    = 0,
413         },
414         { },
415 };
416 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
417 
418 static struct platform_driver pm8607_regulator_driver = {
419         .driver         = {
420                 .name   = "88pm860x-regulator",
421                 .owner  = THIS_MODULE,
422         },
423         .probe          = pm8607_regulator_probe,
424         .id_table       = pm8607_regulator_driver_ids,
425 };
426 
427 static int __init pm8607_regulator_init(void)
428 {
429         return platform_driver_register(&pm8607_regulator_driver);
430 }
431 subsys_initcall(pm8607_regulator_init);
432 
433 static void __exit pm8607_regulator_exit(void)
434 {
435         platform_driver_unregister(&pm8607_regulator_driver);
436 }
437 module_exit(pm8607_regulator_exit);
438 
439 MODULE_LICENSE("GPL");
440 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
441 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
442 MODULE_ALIAS("platform:88pm8607-regulator");
443 

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