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88pm8607.c
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1 /*
2  * Regulators driver for Marvell 88PM8607
3  *
4  * Copyright (C) 2009 Marvell International Ltd.
5  * Haojian Zhuang <[email protected]>
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 <[email protected]>");
502 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
503 MODULE_ALIAS("platform:88pm8607-regulator");
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