Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

Linux/drivers/regulator/act8865-regulator.c

  1 /*
  2  * act8865-regulator.c - Voltage regulation for active-semi ACT88xx PMUs
  3  *
  4  * http://www.active-semi.com/products/power-management-units/act88xx/
  5  *
  6  * Copyright (C) 2013 Atmel Corporation
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License as published by
 10  * the Free Software Foundation; either version 2 of the License, or
 11  * (at your option) any later version.
 12  *
 13  * This program is distributed in the hope that it will be useful,
 14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16  * GNU General Public License for more details.
 17  */
 18 
 19 #include <linux/module.h>
 20 #include <linux/init.h>
 21 #include <linux/i2c.h>
 22 #include <linux/err.h>
 23 #include <linux/platform_device.h>
 24 #include <linux/regulator/driver.h>
 25 #include <linux/regulator/act8865.h>
 26 #include <linux/of.h>
 27 #include <linux/of_device.h>
 28 #include <linux/regulator/of_regulator.h>
 29 #include <linux/regmap.h>
 30 
 31 /*
 32  * ACT8600 Global Register Map.
 33  */
 34 #define ACT8600_SYS_MODE        0x00
 35 #define ACT8600_SYS_CTRL        0x01
 36 #define ACT8600_DCDC1_VSET      0x10
 37 #define ACT8600_DCDC1_CTRL      0x12
 38 #define ACT8600_DCDC2_VSET      0x20
 39 #define ACT8600_DCDC2_CTRL      0x22
 40 #define ACT8600_DCDC3_VSET      0x30
 41 #define ACT8600_DCDC3_CTRL      0x32
 42 #define ACT8600_SUDCDC4_VSET    0x40
 43 #define ACT8600_SUDCDC4_CTRL    0x41
 44 #define ACT8600_LDO5_VSET       0x50
 45 #define ACT8600_LDO5_CTRL       0x51
 46 #define ACT8600_LDO6_VSET       0x60
 47 #define ACT8600_LDO6_CTRL       0x61
 48 #define ACT8600_LDO7_VSET       0x70
 49 #define ACT8600_LDO7_CTRL       0x71
 50 #define ACT8600_LDO8_VSET       0x80
 51 #define ACT8600_LDO8_CTRL       0x81
 52 #define ACT8600_LDO910_CTRL     0x91
 53 #define ACT8600_APCH0           0xA1
 54 #define ACT8600_APCH1           0xA8
 55 #define ACT8600_APCH2           0xA9
 56 #define ACT8600_APCH_STAT       0xAA
 57 #define ACT8600_OTG0            0xB0
 58 #define ACT8600_OTG1            0xB2
 59 
 60 /*
 61  * ACT8846 Global Register Map.
 62  */
 63 #define ACT8846_SYS0            0x00
 64 #define ACT8846_SYS1            0x01
 65 #define ACT8846_REG1_VSET       0x10
 66 #define ACT8846_REG1_CTRL       0x12
 67 #define ACT8846_REG2_VSET0      0x20
 68 #define ACT8846_REG2_VSET1      0x21
 69 #define ACT8846_REG2_CTRL       0x22
 70 #define ACT8846_REG3_VSET0      0x30
 71 #define ACT8846_REG3_VSET1      0x31
 72 #define ACT8846_REG3_CTRL       0x32
 73 #define ACT8846_REG4_VSET0      0x40
 74 #define ACT8846_REG4_VSET1      0x41
 75 #define ACT8846_REG4_CTRL       0x42
 76 #define ACT8846_REG5_VSET       0x50
 77 #define ACT8846_REG5_CTRL       0x51
 78 #define ACT8846_REG6_VSET       0x58
 79 #define ACT8846_REG6_CTRL       0x59
 80 #define ACT8846_REG7_VSET       0x60
 81 #define ACT8846_REG7_CTRL       0x61
 82 #define ACT8846_REG8_VSET       0x68
 83 #define ACT8846_REG8_CTRL       0x69
 84 #define ACT8846_REG9_VSET       0x70
 85 #define ACT8846_REG9_CTRL       0x71
 86 #define ACT8846_REG10_VSET      0x80
 87 #define ACT8846_REG10_CTRL      0x81
 88 #define ACT8846_REG11_VSET      0x90
 89 #define ACT8846_REG11_CTRL      0x91
 90 #define ACT8846_REG12_VSET      0xa0
 91 #define ACT8846_REG12_CTRL      0xa1
 92 #define ACT8846_REG13_CTRL      0xb1
 93 #define ACT8846_GLB_OFF_CTRL    0xc3
 94 #define ACT8846_OFF_SYSMASK     0x18
 95 
 96 /*
 97  * ACT8865 Global Register Map.
 98  */
 99 #define ACT8865_SYS_MODE        0x00
100 #define ACT8865_SYS_CTRL        0x01
101 #define ACT8865_DCDC1_VSET1     0x20
102 #define ACT8865_DCDC1_VSET2     0x21
103 #define ACT8865_DCDC1_CTRL      0x22
104 #define ACT8865_DCDC2_VSET1     0x30
105 #define ACT8865_DCDC2_VSET2     0x31
106 #define ACT8865_DCDC2_CTRL      0x32
107 #define ACT8865_DCDC3_VSET1     0x40
108 #define ACT8865_DCDC3_VSET2     0x41
109 #define ACT8865_DCDC3_CTRL      0x42
110 #define ACT8865_LDO1_VSET       0x50
111 #define ACT8865_LDO1_CTRL       0x51
112 #define ACT8865_LDO2_VSET       0x54
113 #define ACT8865_LDO2_CTRL       0x55
114 #define ACT8865_LDO3_VSET       0x60
115 #define ACT8865_LDO3_CTRL       0x61
116 #define ACT8865_LDO4_VSET       0x64
117 #define ACT8865_LDO4_CTRL       0x65
118 #define ACT8865_MSTROFF         0x20
119 
120 /*
121  * Field Definitions.
122  */
123 #define ACT8865_ENA             0x80    /* ON - [7] */
124 #define ACT8865_VSEL_MASK       0x3F    /* VSET - [5:0] */
125 
126 
127 #define ACT8600_LDO10_ENA               0x40    /* ON - [6] */
128 #define ACT8600_SUDCDC_VSEL_MASK        0xFF    /* SUDCDC VSET - [7:0] */
129 
130 /*
131  * ACT8865 voltage number
132  */
133 #define ACT8865_VOLTAGE_NUM     64
134 #define ACT8600_SUDCDC_VOLTAGE_NUM      255
135 
136 struct act8865 {
137         struct regmap *regmap;
138         int off_reg;
139         int off_mask;
140 };
141 
142 static const struct regmap_range act8600_reg_ranges[] = {
143         regmap_reg_range(0x00, 0x01),
144         regmap_reg_range(0x10, 0x10),
145         regmap_reg_range(0x12, 0x12),
146         regmap_reg_range(0x20, 0x20),
147         regmap_reg_range(0x22, 0x22),
148         regmap_reg_range(0x30, 0x30),
149         regmap_reg_range(0x32, 0x32),
150         regmap_reg_range(0x40, 0x41),
151         regmap_reg_range(0x50, 0x51),
152         regmap_reg_range(0x60, 0x61),
153         regmap_reg_range(0x70, 0x71),
154         regmap_reg_range(0x80, 0x81),
155         regmap_reg_range(0x91, 0x91),
156         regmap_reg_range(0xA1, 0xA1),
157         regmap_reg_range(0xA8, 0xAA),
158         regmap_reg_range(0xB0, 0xB0),
159         regmap_reg_range(0xB2, 0xB2),
160         regmap_reg_range(0xC1, 0xC1),
161 };
162 
163 static const struct regmap_range act8600_reg_ro_ranges[] = {
164         regmap_reg_range(0xAA, 0xAA),
165         regmap_reg_range(0xC1, 0xC1),
166 };
167 
168 static const struct regmap_range act8600_reg_volatile_ranges[] = {
169         regmap_reg_range(0x00, 0x01),
170         regmap_reg_range(0x12, 0x12),
171         regmap_reg_range(0x22, 0x22),
172         regmap_reg_range(0x32, 0x32),
173         regmap_reg_range(0x41, 0x41),
174         regmap_reg_range(0x51, 0x51),
175         regmap_reg_range(0x61, 0x61),
176         regmap_reg_range(0x71, 0x71),
177         regmap_reg_range(0x81, 0x81),
178         regmap_reg_range(0xA8, 0xA8),
179         regmap_reg_range(0xAA, 0xAA),
180         regmap_reg_range(0xB0, 0xB0),
181         regmap_reg_range(0xC1, 0xC1),
182 };
183 
184 static const struct regmap_access_table act8600_write_ranges_table = {
185         .yes_ranges     = act8600_reg_ranges,
186         .n_yes_ranges   = ARRAY_SIZE(act8600_reg_ranges),
187         .no_ranges      = act8600_reg_ro_ranges,
188         .n_no_ranges    = ARRAY_SIZE(act8600_reg_ro_ranges),
189 };
190 
191 static const struct regmap_access_table act8600_read_ranges_table = {
192         .yes_ranges     = act8600_reg_ranges,
193         .n_yes_ranges   = ARRAY_SIZE(act8600_reg_ranges),
194 };
195 
196 static const struct regmap_access_table act8600_volatile_ranges_table = {
197         .yes_ranges     = act8600_reg_volatile_ranges,
198         .n_yes_ranges   = ARRAY_SIZE(act8600_reg_volatile_ranges),
199 };
200 
201 static const struct regmap_config act8600_regmap_config = {
202         .reg_bits = 8,
203         .val_bits = 8,
204         .max_register = 0xFF,
205         .wr_table = &act8600_write_ranges_table,
206         .rd_table = &act8600_read_ranges_table,
207         .volatile_table = &act8600_volatile_ranges_table,
208 };
209 
210 static const struct regmap_config act8865_regmap_config = {
211         .reg_bits = 8,
212         .val_bits = 8,
213 };
214 
215 static const struct regulator_linear_range act8865_voltage_ranges[] = {
216         REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000),
217         REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000),
218         REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000),
219 };
220 
221 static const struct regulator_linear_range act8600_sudcdc_voltage_ranges[] = {
222         REGULATOR_LINEAR_RANGE(3000000, 0, 63, 0),
223         REGULATOR_LINEAR_RANGE(3000000, 64, 159, 100000),
224         REGULATOR_LINEAR_RANGE(12600000, 160, 191, 200000),
225         REGULATOR_LINEAR_RANGE(19000000, 191, 255, 400000),
226 };
227 
228 static struct regulator_ops act8865_ops = {
229         .list_voltage           = regulator_list_voltage_linear_range,
230         .map_voltage            = regulator_map_voltage_linear_range,
231         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
232         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
233         .enable                 = regulator_enable_regmap,
234         .disable                = regulator_disable_regmap,
235         .is_enabled             = regulator_is_enabled_regmap,
236 };
237 
238 static struct regulator_ops act8865_ldo_ops = {
239         .enable                 = regulator_enable_regmap,
240         .disable                = regulator_disable_regmap,
241         .is_enabled             = regulator_is_enabled_regmap,
242 };
243 
244 #define ACT88xx_REG(_name, _family, _id, _vsel_reg, _supply)            \
245         [_family##_ID_##_id] = {                                        \
246                 .name                   = _name,                        \
247                 .supply_name            = _supply,                      \
248                 .id                     = _family##_ID_##_id,           \
249                 .type                   = REGULATOR_VOLTAGE,            \
250                 .ops                    = &act8865_ops,                 \
251                 .n_voltages             = ACT8865_VOLTAGE_NUM,          \
252                 .linear_ranges          = act8865_voltage_ranges,       \
253                 .n_linear_ranges        = ARRAY_SIZE(act8865_voltage_ranges), \
254                 .vsel_reg               = _family##_##_id##_##_vsel_reg, \
255                 .vsel_mask              = ACT8865_VSEL_MASK,            \
256                 .enable_reg             = _family##_##_id##_CTRL,       \
257                 .enable_mask            = ACT8865_ENA,                  \
258                 .owner                  = THIS_MODULE,                  \
259         }
260 
261 static const struct regulator_desc act8600_regulators[] = {
262         ACT88xx_REG("DCDC1", ACT8600, DCDC1, VSET, "vp1"),
263         ACT88xx_REG("DCDC2", ACT8600, DCDC2, VSET, "vp2"),
264         ACT88xx_REG("DCDC3", ACT8600, DCDC3, VSET, "vp3"),
265         {
266                 .name = "SUDCDC_REG4",
267                 .id = ACT8600_ID_SUDCDC4,
268                 .ops = &act8865_ops,
269                 .type = REGULATOR_VOLTAGE,
270                 .n_voltages = ACT8600_SUDCDC_VOLTAGE_NUM,
271                 .linear_ranges = act8600_sudcdc_voltage_ranges,
272                 .n_linear_ranges = ARRAY_SIZE(act8600_sudcdc_voltage_ranges),
273                 .vsel_reg = ACT8600_SUDCDC4_VSET,
274                 .vsel_mask = ACT8600_SUDCDC_VSEL_MASK,
275                 .enable_reg = ACT8600_SUDCDC4_CTRL,
276                 .enable_mask = ACT8865_ENA,
277                 .owner = THIS_MODULE,
278         },
279         ACT88xx_REG("LDO5", ACT8600, LDO5, VSET, "inl"),
280         ACT88xx_REG("LDO6", ACT8600, LDO6, VSET, "inl"),
281         ACT88xx_REG("LDO7", ACT8600, LDO7, VSET, "inl"),
282         ACT88xx_REG("LDO8", ACT8600, LDO8, VSET, "inl"),
283         {
284                 .name = "LDO_REG9",
285                 .id = ACT8600_ID_LDO9,
286                 .ops = &act8865_ldo_ops,
287                 .type = REGULATOR_VOLTAGE,
288                 .n_voltages = 1,
289                 .fixed_uV = 3300000,
290                 .enable_reg = ACT8600_LDO910_CTRL,
291                 .enable_mask = ACT8865_ENA,
292                 .owner = THIS_MODULE,
293         },
294         {
295                 .name = "LDO_REG10",
296                 .id = ACT8600_ID_LDO10,
297                 .ops = &act8865_ldo_ops,
298                 .type = REGULATOR_VOLTAGE,
299                 .n_voltages = 1,
300                 .fixed_uV = 1200000,
301                 .enable_reg = ACT8600_LDO910_CTRL,
302                 .enable_mask = ACT8600_LDO10_ENA,
303                 .owner = THIS_MODULE,
304         },
305 };
306 
307 static const struct regulator_desc act8846_regulators[] = {
308         ACT88xx_REG("REG1", ACT8846, REG1, VSET, "vp1"),
309         ACT88xx_REG("REG2", ACT8846, REG2, VSET0, "vp2"),
310         ACT88xx_REG("REG3", ACT8846, REG3, VSET0, "vp3"),
311         ACT88xx_REG("REG4", ACT8846, REG4, VSET0, "vp4"),
312         ACT88xx_REG("REG5", ACT8846, REG5, VSET, "inl1"),
313         ACT88xx_REG("REG6", ACT8846, REG6, VSET, "inl1"),
314         ACT88xx_REG("REG7", ACT8846, REG7, VSET, "inl1"),
315         ACT88xx_REG("REG8", ACT8846, REG8, VSET, "inl2"),
316         ACT88xx_REG("REG9", ACT8846, REG9, VSET, "inl2"),
317         ACT88xx_REG("REG10", ACT8846, REG10, VSET, "inl3"),
318         ACT88xx_REG("REG11", ACT8846, REG11, VSET, "inl3"),
319         ACT88xx_REG("REG12", ACT8846, REG12, VSET, "inl3"),
320 };
321 
322 static const struct regulator_desc act8865_regulators[] = {
323         ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET1, "vp1"),
324         ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET1, "vp2"),
325         ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET1, "vp3"),
326         ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
327         ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
328         ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
329         ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
330 };
331 
332 static const struct regulator_desc act8865_alt_regulators[] = {
333         ACT88xx_REG("DCDC_REG1", ACT8865, DCDC1, VSET2, "vp1"),
334         ACT88xx_REG("DCDC_REG2", ACT8865, DCDC2, VSET2, "vp2"),
335         ACT88xx_REG("DCDC_REG3", ACT8865, DCDC3, VSET2, "vp3"),
336         ACT88xx_REG("LDO_REG1", ACT8865, LDO1, VSET, "inl45"),
337         ACT88xx_REG("LDO_REG2", ACT8865, LDO2, VSET, "inl45"),
338         ACT88xx_REG("LDO_REG3", ACT8865, LDO3, VSET, "inl67"),
339         ACT88xx_REG("LDO_REG4", ACT8865, LDO4, VSET, "inl67"),
340 };
341 
342 #ifdef CONFIG_OF
343 static const struct of_device_id act8865_dt_ids[] = {
344         { .compatible = "active-semi,act8600", .data = (void *)ACT8600 },
345         { .compatible = "active-semi,act8846", .data = (void *)ACT8846 },
346         { .compatible = "active-semi,act8865", .data = (void *)ACT8865 },
347         { }
348 };
349 MODULE_DEVICE_TABLE(of, act8865_dt_ids);
350 
351 static struct of_regulator_match act8846_matches[] = {
352         [ACT8846_ID_REG1]       = { .name = "REG1" },
353         [ACT8846_ID_REG2]       = { .name = "REG2" },
354         [ACT8846_ID_REG3]       = { .name = "REG3" },
355         [ACT8846_ID_REG4]       = { .name = "REG4" },
356         [ACT8846_ID_REG5]       = { .name = "REG5" },
357         [ACT8846_ID_REG6]       = { .name = "REG6" },
358         [ACT8846_ID_REG7]       = { .name = "REG7" },
359         [ACT8846_ID_REG8]       = { .name = "REG8" },
360         [ACT8846_ID_REG9]       = { .name = "REG9" },
361         [ACT8846_ID_REG10]      = { .name = "REG10" },
362         [ACT8846_ID_REG11]      = { .name = "REG11" },
363         [ACT8846_ID_REG12]      = { .name = "REG12" },
364 };
365 
366 static struct of_regulator_match act8865_matches[] = {
367         [ACT8865_ID_DCDC1]      = { .name = "DCDC_REG1"},
368         [ACT8865_ID_DCDC2]      = { .name = "DCDC_REG2"},
369         [ACT8865_ID_DCDC3]      = { .name = "DCDC_REG3"},
370         [ACT8865_ID_LDO1]       = { .name = "LDO_REG1"},
371         [ACT8865_ID_LDO2]       = { .name = "LDO_REG2"},
372         [ACT8865_ID_LDO3]       = { .name = "LDO_REG3"},
373         [ACT8865_ID_LDO4]       = { .name = "LDO_REG4"},
374 };
375 
376 static struct of_regulator_match act8600_matches[] = {
377         [ACT8600_ID_DCDC1]      = { .name = "DCDC_REG1"},
378         [ACT8600_ID_DCDC2]      = { .name = "DCDC_REG2"},
379         [ACT8600_ID_DCDC3]      = { .name = "DCDC_REG3"},
380         [ACT8600_ID_SUDCDC4]    = { .name = "SUDCDC_REG4"},
381         [ACT8600_ID_LDO5]       = { .name = "LDO_REG5"},
382         [ACT8600_ID_LDO6]       = { .name = "LDO_REG6"},
383         [ACT8600_ID_LDO7]       = { .name = "LDO_REG7"},
384         [ACT8600_ID_LDO8]       = { .name = "LDO_REG8"},
385         [ACT8600_ID_LDO9]       = { .name = "LDO_REG9"},
386         [ACT8600_ID_LDO10]      = { .name = "LDO_REG10"},
387 };
388 
389 static int act8865_pdata_from_dt(struct device *dev,
390                                  struct act8865_platform_data *pdata,
391                                  unsigned long type)
392 {
393         int matched, i, num_matches;
394         struct device_node *np;
395         struct act8865_regulator_data *regulator;
396         struct of_regulator_match *matches;
397 
398         switch (type) {
399         case ACT8600:
400                 matches = act8600_matches;
401                 num_matches = ARRAY_SIZE(act8600_matches);
402                 break;
403         case ACT8846:
404                 matches = act8846_matches;
405                 num_matches = ARRAY_SIZE(act8846_matches);
406                 break;
407         case ACT8865:
408                 matches = act8865_matches;
409                 num_matches = ARRAY_SIZE(act8865_matches);
410                 break;
411         default:
412                 dev_err(dev, "invalid device id %lu\n", type);
413                 return -EINVAL;
414         }
415 
416         np = of_get_child_by_name(dev->of_node, "regulators");
417         if (!np) {
418                 dev_err(dev, "missing 'regulators' subnode in DT\n");
419                 return -EINVAL;
420         }
421 
422         matched = of_regulator_match(dev, np, matches, num_matches);
423         of_node_put(np);
424         if (matched <= 0)
425                 return matched;
426 
427         pdata->regulators = devm_kzalloc(dev,
428                                          sizeof(struct act8865_regulator_data) *
429                                          num_matches, GFP_KERNEL);
430         if (!pdata->regulators)
431                 return -ENOMEM;
432 
433         pdata->num_regulators = num_matches;
434         regulator = pdata->regulators;
435 
436         for (i = 0; i < num_matches; i++) {
437                 regulator->id = i;
438                 regulator->name = matches[i].name;
439                 regulator->init_data = matches[i].init_data;
440                 regulator->of_node = matches[i].of_node;
441                 regulator++;
442         }
443 
444         return 0;
445 }
446 #else
447 static inline int act8865_pdata_from_dt(struct device *dev,
448                                         struct act8865_platform_data *pdata,
449                                         unsigned long type)
450 {
451         return 0;
452 }
453 #endif
454 
455 static struct act8865_regulator_data *act8865_get_regulator_data(
456                 int id, struct act8865_platform_data *pdata)
457 {
458         int i;
459 
460         if (!pdata)
461                 return NULL;
462 
463         for (i = 0; i < pdata->num_regulators; i++) {
464                 if (pdata->regulators[i].id == id)
465                         return &pdata->regulators[i];
466         }
467 
468         return NULL;
469 }
470 
471 static struct i2c_client *act8865_i2c_client;
472 static void act8865_power_off(void)
473 {
474         struct act8865 *act8865;
475 
476         act8865 = i2c_get_clientdata(act8865_i2c_client);
477         regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);
478         while (1);
479 }
480 
481 static int act8865_pmic_probe(struct i2c_client *client,
482                               const struct i2c_device_id *i2c_id)
483 {
484         const struct regulator_desc *regulators;
485         struct act8865_platform_data pdata_of, *pdata;
486         struct device *dev = &client->dev;
487         int i, ret, num_regulators;
488         struct act8865 *act8865;
489         const struct regmap_config *regmap_config;
490         unsigned long type;
491         int off_reg, off_mask;
492         int voltage_select = 0;
493 
494         pdata = dev_get_platdata(dev);
495 
496         if (dev->of_node && !pdata) {
497                 const struct of_device_id *id;
498 
499                 id = of_match_device(of_match_ptr(act8865_dt_ids), dev);
500                 if (!id)
501                         return -ENODEV;
502 
503                 type = (unsigned long) id->data;
504 
505                 voltage_select = !!of_get_property(dev->of_node,
506                                                    "active-semi,vsel-high",
507                                                    NULL);
508         } else {
509                 type = i2c_id->driver_data;
510         }
511 
512         switch (type) {
513         case ACT8600:
514                 regulators = act8600_regulators;
515                 num_regulators = ARRAY_SIZE(act8600_regulators);
516                 regmap_config = &act8600_regmap_config;
517                 off_reg = -1;
518                 off_mask = -1;
519                 break;
520         case ACT8846:
521                 regulators = act8846_regulators;
522                 num_regulators = ARRAY_SIZE(act8846_regulators);
523                 regmap_config = &act8865_regmap_config;
524                 off_reg = ACT8846_GLB_OFF_CTRL;
525                 off_mask = ACT8846_OFF_SYSMASK;
526                 break;
527         case ACT8865:
528                 if (voltage_select) {
529                         regulators = act8865_alt_regulators;
530                         num_regulators = ARRAY_SIZE(act8865_alt_regulators);
531                 } else {
532                         regulators = act8865_regulators;
533                         num_regulators = ARRAY_SIZE(act8865_regulators);
534                 }
535                 regmap_config = &act8865_regmap_config;
536                 off_reg = ACT8865_SYS_CTRL;
537                 off_mask = ACT8865_MSTROFF;
538                 break;
539         default:
540                 dev_err(dev, "invalid device id %lu\n", type);
541                 return -EINVAL;
542         }
543 
544         if (dev->of_node && !pdata) {
545                 ret = act8865_pdata_from_dt(dev, &pdata_of, type);
546                 if (ret < 0)
547                         return ret;
548 
549                 pdata = &pdata_of;
550         }
551 
552         act8865 = devm_kzalloc(dev, sizeof(struct act8865), GFP_KERNEL);
553         if (!act8865)
554                 return -ENOMEM;
555 
556         act8865->regmap = devm_regmap_init_i2c(client, regmap_config);
557         if (IS_ERR(act8865->regmap)) {
558                 ret = PTR_ERR(act8865->regmap);
559                 dev_err(dev, "Failed to allocate register map: %d\n", ret);
560                 return ret;
561         }
562 
563         if (of_device_is_system_power_controller(dev->of_node)) {
564                 if (!pm_power_off && (off_reg > 0)) {
565                         act8865_i2c_client = client;
566                         act8865->off_reg = off_reg;
567                         act8865->off_mask = off_mask;
568                         pm_power_off = act8865_power_off;
569                 } else {
570                         dev_err(dev, "Failed to set poweroff capability, already defined\n");
571                 }
572         }
573 
574         /* Finally register devices */
575         for (i = 0; i < num_regulators; i++) {
576                 const struct regulator_desc *desc = &regulators[i];
577                 struct regulator_config config = { };
578                 struct act8865_regulator_data *rdata;
579                 struct regulator_dev *rdev;
580 
581                 config.dev = dev;
582                 config.driver_data = act8865;
583                 config.regmap = act8865->regmap;
584 
585                 rdata = act8865_get_regulator_data(desc->id, pdata);
586                 if (rdata) {
587                         config.init_data = rdata->init_data;
588                         config.of_node = rdata->of_node;
589                 }
590 
591                 rdev = devm_regulator_register(dev, desc, &config);
592                 if (IS_ERR(rdev)) {
593                         dev_err(dev, "failed to register %s\n", desc->name);
594                         return PTR_ERR(rdev);
595                 }
596         }
597 
598         i2c_set_clientdata(client, act8865);
599 
600         return 0;
601 }
602 
603 static const struct i2c_device_id act8865_ids[] = {
604         { .name = "act8600", .driver_data = ACT8600 },
605         { .name = "act8846", .driver_data = ACT8846 },
606         { .name = "act8865", .driver_data = ACT8865 },
607         { },
608 };
609 MODULE_DEVICE_TABLE(i2c, act8865_ids);
610 
611 static struct i2c_driver act8865_pmic_driver = {
612         .driver = {
613                 .name   = "act8865",
614         },
615         .probe          = act8865_pmic_probe,
616         .id_table       = act8865_ids,
617 };
618 
619 module_i2c_driver(act8865_pmic_driver);
620 
621 MODULE_DESCRIPTION("active-semi act88xx voltage regulator driver");
622 MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
623 MODULE_LICENSE("GPL v2");
624 

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