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1/*
2 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/init.h>
21#include <linux/err.h>
22#include <linux/of.h>
23#include <linux/of_device.h>
24#include <linux/regulator/of_regulator.h>
25#include <linux/platform_device.h>
26#include <linux/regulator/driver.h>
27#include <linux/regulator/machine.h>
28#include <linux/regulator/pfuze100.h>
29#include <linux/i2c.h>
30#include <linux/slab.h>
31#include <linux/regmap.h>
32
33#define PFUZE_NUMREGS 128
34#define PFUZE100_VOL_OFFSET 0
35#define PFUZE100_STANDBY_OFFSET 1
36#define PFUZE100_MODE_OFFSET 3
37#define PFUZE100_CONF_OFFSET 4
38
39#define PFUZE100_DEVICEID 0x0
40#define PFUZE100_REVID 0x3
41#define PFUZE100_FABID 0x4
42
43#define PFUZE100_COINVOL 0x1a
44#define PFUZE100_SW1ABVOL 0x20
45#define PFUZE100_SW1CVOL 0x2e
46#define PFUZE100_SW2VOL 0x35
47#define PFUZE100_SW3AVOL 0x3c
48#define PFUZE100_SW3BVOL 0x43
49#define PFUZE100_SW4VOL 0x4a
50#define PFUZE100_SWBSTCON1 0x66
51#define PFUZE100_VREFDDRCON 0x6a
52#define PFUZE100_VSNVSVOL 0x6b
53#define PFUZE100_VGEN1VOL 0x6c
54#define PFUZE100_VGEN2VOL 0x6d
55#define PFUZE100_VGEN3VOL 0x6e
56#define PFUZE100_VGEN4VOL 0x6f
57#define PFUZE100_VGEN5VOL 0x70
58#define PFUZE100_VGEN6VOL 0x71
59
60enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3 };
61
62struct pfuze_regulator {
63 struct regulator_desc desc;
64 unsigned char stby_reg;
65 unsigned char stby_mask;
66};
67
68struct pfuze_chip {
69 int chip_id;
70 struct regmap *regmap;
71 struct device *dev;
72 struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
73 struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR];
74 struct pfuze_regulator *pfuze_regulators;
75};
76
77static const int pfuze100_swbst[] = {
78 5000000, 5050000, 5100000, 5150000,
79};
80
81static const int pfuze100_vsnvs[] = {
82 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
83};
84
85static const int pfuze100_coin[] = {
86 2500000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000,
87};
88
89static const int pfuze3000_sw2lo[] = {
90 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000,
91};
92
93static const int pfuze3000_sw2hi[] = {
94 2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000,
95};
96
97static const struct i2c_device_id pfuze_device_id[] = {
98 {.name = "pfuze100", .driver_data = PFUZE100},
99 {.name = "pfuze200", .driver_data = PFUZE200},
100 {.name = "pfuze3000", .driver_data = PFUZE3000},
101 { }
102};
103MODULE_DEVICE_TABLE(i2c, pfuze_device_id);
104
105static const struct of_device_id pfuze_dt_ids[] = {
106 { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100},
107 { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200},
108 { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000},
109 { }
110};
111MODULE_DEVICE_TABLE(of, pfuze_dt_ids);
112
113static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
114{
115 struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
116 int id = rdev_get_id(rdev);
117 unsigned int ramp_bits;
118 int ret;
119
120 if (id < PFUZE100_SWBST) {
121 ramp_delay = 12500 / ramp_delay;
122 ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
123 ret = regmap_update_bits(pfuze100->regmap,
124 rdev->desc->vsel_reg + 4,
125 0xc0, ramp_bits << 6);
126 if (ret < 0)
127 dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
128 } else
129 ret = -EACCES;
130
131 return ret;
132}
133
134static const struct regulator_ops pfuze100_ldo_regulator_ops = {
135 .enable = regulator_enable_regmap,
136 .disable = regulator_disable_regmap,
137 .is_enabled = regulator_is_enabled_regmap,
138 .list_voltage = regulator_list_voltage_linear,
139 .set_voltage_sel = regulator_set_voltage_sel_regmap,
140 .get_voltage_sel = regulator_get_voltage_sel_regmap,
141};
142
143static const struct regulator_ops pfuze100_fixed_regulator_ops = {
144 .enable = regulator_enable_regmap,
145 .disable = regulator_disable_regmap,
146 .is_enabled = regulator_is_enabled_regmap,
147 .list_voltage = regulator_list_voltage_linear,
148};
149
150static const struct regulator_ops pfuze100_sw_regulator_ops = {
151 .list_voltage = regulator_list_voltage_linear,
152 .set_voltage_sel = regulator_set_voltage_sel_regmap,
153 .get_voltage_sel = regulator_get_voltage_sel_regmap,
154 .set_voltage_time_sel = regulator_set_voltage_time_sel,
155 .set_ramp_delay = pfuze100_set_ramp_delay,
156};
157
158static const struct regulator_ops pfuze100_swb_regulator_ops = {
159 .enable = regulator_enable_regmap,
160 .disable = regulator_disable_regmap,
161 .list_voltage = regulator_list_voltage_table,
162 .map_voltage = regulator_map_voltage_ascend,
163 .set_voltage_sel = regulator_set_voltage_sel_regmap,
164 .get_voltage_sel = regulator_get_voltage_sel_regmap,
165
166};
167
168#define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \
169 [_chip ## _ ## _name] = { \
170 .desc = { \
171 .name = #_name, \
172 .n_voltages = 1, \
173 .ops = &pfuze100_fixed_regulator_ops, \
174 .type = REGULATOR_VOLTAGE, \
175 .id = _chip ## _ ## _name, \
176 .owner = THIS_MODULE, \
177 .min_uV = (voltage), \
178 .enable_reg = (base), \
179 .enable_mask = 0x10, \
180 }, \
181 }
182
183#define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \
184 [_chip ## _ ## _name] = { \
185 .desc = { \
186 .name = #_name,\
187 .n_voltages = ((max) - (min)) / (step) + 1, \
188 .ops = &pfuze100_sw_regulator_ops, \
189 .type = REGULATOR_VOLTAGE, \
190 .id = _chip ## _ ## _name, \
191 .owner = THIS_MODULE, \
192 .min_uV = (min), \
193 .uV_step = (step), \
194 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
195 .vsel_mask = 0x3f, \
196 }, \
197 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
198 .stby_mask = 0x3f, \
199 }
200
201#define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \
202 [_chip ## _ ## _name] = { \
203 .desc = { \
204 .name = #_name, \
205 .n_voltages = ARRAY_SIZE(voltages), \
206 .ops = &pfuze100_swb_regulator_ops, \
207 .type = REGULATOR_VOLTAGE, \
208 .id = _chip ## _ ## _name, \
209 .owner = THIS_MODULE, \
210 .volt_table = voltages, \
211 .vsel_reg = (base), \
212 .vsel_mask = (mask), \
213 .enable_reg = (base), \
214 .enable_mask = 0x48, \
215 }, \
216 }
217
218#define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \
219 [_chip ## _ ## _name] = { \
220 .desc = { \
221 .name = #_name, \
222 .n_voltages = ((max) - (min)) / (step) + 1, \
223 .ops = &pfuze100_ldo_regulator_ops, \
224 .type = REGULATOR_VOLTAGE, \
225 .id = _chip ## _ ## _name, \
226 .owner = THIS_MODULE, \
227 .min_uV = (min), \
228 .uV_step = (step), \
229 .vsel_reg = (base), \
230 .vsel_mask = 0xf, \
231 .enable_reg = (base), \
232 .enable_mask = 0x10, \
233 }, \
234 .stby_reg = (base), \
235 .stby_mask = 0x20, \
236 }
237
238#define PFUZE100_COIN_REG(_chip, _name, base, mask, voltages) \
239 [_chip ## _ ## _name] = { \
240 .desc = { \
241 .name = #_name, \
242 .n_voltages = ARRAY_SIZE(voltages), \
243 .ops = &pfuze100_swb_regulator_ops, \
244 .type = REGULATOR_VOLTAGE, \
245 .id = _chip ## _ ## _name, \
246 .owner = THIS_MODULE, \
247 .volt_table = voltages, \
248 .vsel_reg = (base), \
249 .vsel_mask = (mask), \
250 .enable_reg = (base), \
251 .enable_mask = 0x8, \
252 }, \
253 }
254
255#define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \
256 .desc = { \
257 .name = #_name, \
258 .n_voltages = ((max) - (min)) / (step) + 1, \
259 .ops = &pfuze100_ldo_regulator_ops, \
260 .type = REGULATOR_VOLTAGE, \
261 .id = _chip ## _ ## _name, \
262 .owner = THIS_MODULE, \
263 .min_uV = (min), \
264 .uV_step = (step), \
265 .vsel_reg = (base), \
266 .vsel_mask = 0x3, \
267 .enable_reg = (base), \
268 .enable_mask = 0x10, \
269 }, \
270 .stby_reg = (base), \
271 .stby_mask = 0x20, \
272}
273
274
275#define PFUZE3000_SW2_REG(_chip, _name, base, min, max, step) { \
276 .desc = { \
277 .name = #_name,\
278 .n_voltages = ((max) - (min)) / (step) + 1, \
279 .ops = &pfuze100_sw_regulator_ops, \
280 .type = REGULATOR_VOLTAGE, \
281 .id = _chip ## _ ## _name, \
282 .owner = THIS_MODULE, \
283 .min_uV = (min), \
284 .uV_step = (step), \
285 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
286 .vsel_mask = 0x7, \
287 }, \
288 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
289 .stby_mask = 0x7, \
290}
291
292#define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step) { \
293 .desc = { \
294 .name = #_name,\
295 .n_voltages = ((max) - (min)) / (step) + 1, \
296 .ops = &pfuze100_sw_regulator_ops, \
297 .type = REGULATOR_VOLTAGE, \
298 .id = _chip ## _ ## _name, \
299 .owner = THIS_MODULE, \
300 .min_uV = (min), \
301 .uV_step = (step), \
302 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
303 .vsel_mask = 0xf, \
304 }, \
305 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
306 .stby_mask = 0xf, \
307}
308
309/* PFUZE100 */
310static struct pfuze_regulator pfuze100_regulators[] = {
311 PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
312 PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000),
313 PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
314 PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
315 PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
316 PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000),
317 PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
318 PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
319 PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000),
320 PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
321 PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
322 PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
323 PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
324 PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
325 PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
326};
327
328static struct pfuze_regulator pfuze200_regulators[] = {
329 PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
330 PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
331 PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
332 PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
333 PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
334 PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
335 PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000),
336 PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
337 PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
338 PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
339 PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
340 PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
341 PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
342 PFUZE100_COIN_REG(PFUZE200, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin),
343};
344
345static struct pfuze_regulator pfuze3000_regulators[] = {
346 PFUZE100_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 700000, 1475000, 25000),
347 PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000),
348 PFUZE100_SWB_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
349 PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
350 PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst),
351 PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
352 PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000),
353 PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
354 PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
355 PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
356 PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
357 PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
358 PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
359};
360
361#ifdef CONFIG_OF
362/* PFUZE100 */
363static struct of_regulator_match pfuze100_matches[] = {
364 { .name = "sw1ab", },
365 { .name = "sw1c", },
366 { .name = "sw2", },
367 { .name = "sw3a", },
368 { .name = "sw3b", },
369 { .name = "sw4", },
370 { .name = "swbst", },
371 { .name = "vsnvs", },
372 { .name = "vrefddr", },
373 { .name = "vgen1", },
374 { .name = "vgen2", },
375 { .name = "vgen3", },
376 { .name = "vgen4", },
377 { .name = "vgen5", },
378 { .name = "vgen6", },
379};
380
381/* PFUZE200 */
382static struct of_regulator_match pfuze200_matches[] = {
383
384 { .name = "sw1ab", },
385 { .name = "sw2", },
386 { .name = "sw3a", },
387 { .name = "sw3b", },
388 { .name = "swbst", },
389 { .name = "vsnvs", },
390 { .name = "vrefddr", },
391 { .name = "vgen1", },
392 { .name = "vgen2", },
393 { .name = "vgen3", },
394 { .name = "vgen4", },
395 { .name = "vgen5", },
396 { .name = "vgen6", },
397 { .name = "coin", },
398};
399
400/* PFUZE3000 */
401static struct of_regulator_match pfuze3000_matches[] = {
402
403 { .name = "sw1a", },
404 { .name = "sw1b", },
405 { .name = "sw2", },
406 { .name = "sw3", },
407 { .name = "swbst", },
408 { .name = "vsnvs", },
409 { .name = "vrefddr", },
410 { .name = "vldo1", },
411 { .name = "vldo2", },
412 { .name = "vccsd", },
413 { .name = "v33", },
414 { .name = "vldo3", },
415 { .name = "vldo4", },
416};
417
418static struct of_regulator_match *pfuze_matches;
419
420static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
421{
422 struct device *dev = chip->dev;
423 struct device_node *np, *parent;
424 int ret;
425
426 np = of_node_get(dev->of_node);
427 if (!np)
428 return -EINVAL;
429
430 parent = of_get_child_by_name(np, "regulators");
431 if (!parent) {
432 dev_err(dev, "regulators node not found\n");
433 return -EINVAL;
434 }
435
436 switch (chip->chip_id) {
437 case PFUZE3000:
438 pfuze_matches = pfuze3000_matches;
439 ret = of_regulator_match(dev, parent, pfuze3000_matches,
440 ARRAY_SIZE(pfuze3000_matches));
441 break;
442 case PFUZE200:
443 pfuze_matches = pfuze200_matches;
444 ret = of_regulator_match(dev, parent, pfuze200_matches,
445 ARRAY_SIZE(pfuze200_matches));
446 break;
447
448 case PFUZE100:
449 default:
450 pfuze_matches = pfuze100_matches;
451 ret = of_regulator_match(dev, parent, pfuze100_matches,
452 ARRAY_SIZE(pfuze100_matches));
453 break;
454 }
455
456 of_node_put(parent);
457 if (ret < 0) {
458 dev_err(dev, "Error parsing regulator init data: %d\n",
459 ret);
460 return ret;
461 }
462
463 return 0;
464}
465
466static inline struct regulator_init_data *match_init_data(int index)
467{
468 return pfuze_matches[index].init_data;
469}
470
471static inline struct device_node *match_of_node(int index)
472{
473 return pfuze_matches[index].of_node;
474}
475#else
476static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
477{
478 return 0;
479}
480
481static inline struct regulator_init_data *match_init_data(int index)
482{
483 return NULL;
484}
485
486static inline struct device_node *match_of_node(int index)
487{
488 return NULL;
489}
490#endif
491
492static int pfuze_identify(struct pfuze_chip *pfuze_chip)
493{
494 unsigned int value;
495 int ret;
496
497 ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value);
498 if (ret)
499 return ret;
500
501 if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) {
502 /*
503 * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013
504 * as ID=8 in PFUZE100
505 */
506 dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8");
507 } else if ((value & 0x0f) != pfuze_chip->chip_id &&
508 (value & 0xf0) >> 4 != pfuze_chip->chip_id) {
509 /* device id NOT match with your setting */
510 dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
511 return -ENODEV;
512 }
513
514 ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);
515 if (ret)
516 return ret;
517 dev_info(pfuze_chip->dev,
518 "Full layer: %x, Metal layer: %x\n",
519 (value & 0xf0) >> 4, value & 0x0f);
520
521 ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value);
522 if (ret)
523 return ret;
524 dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n",
525 (value & 0xc) >> 2, value & 0x3);
526
527 return 0;
528}
529
530static const struct regmap_config pfuze_regmap_config = {
531 .reg_bits = 8,
532 .val_bits = 8,
533 .max_register = PFUZE_NUMREGS - 1,
534 .cache_type = REGCACHE_RBTREE,
535};
536
537static int pfuze100_regulator_probe(struct i2c_client *client,
538 const struct i2c_device_id *id)
539{
540 struct pfuze_chip *pfuze_chip;
541 struct pfuze_regulator_platform_data *pdata =
542 dev_get_platdata(&client->dev);
543 struct regulator_config config = { };
544 int i, ret;
545 const struct of_device_id *match;
546 u32 regulator_num;
547 u32 sw_check_start, sw_check_end, sw_hi = 0x40;
548
549 pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip),
550 GFP_KERNEL);
551 if (!pfuze_chip)
552 return -ENOMEM;
553
554 if (client->dev.of_node) {
555 match = of_match_device(of_match_ptr(pfuze_dt_ids),
556 &client->dev);
557 if (!match) {
558 dev_err(&client->dev, "Error: No device match found\n");
559 return -ENODEV;
560 }
561 pfuze_chip->chip_id = (int)(long)match->data;
562 } else if (id) {
563 pfuze_chip->chip_id = id->driver_data;
564 } else {
565 dev_err(&client->dev, "No dts match or id table match found\n");
566 return -ENODEV;
567 }
568
569 i2c_set_clientdata(client, pfuze_chip);
570 pfuze_chip->dev = &client->dev;
571
572 pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config);
573 if (IS_ERR(pfuze_chip->regmap)) {
574 ret = PTR_ERR(pfuze_chip->regmap);
575 dev_err(&client->dev,
576 "regmap allocation failed with err %d\n", ret);
577 return ret;
578 }
579
580 ret = pfuze_identify(pfuze_chip);
581 if (ret) {
582 dev_err(&client->dev, "unrecognized pfuze chip ID!\n");
583 return ret;
584 }
585
586 /* use the right regulators after identify the right device */
587 switch (pfuze_chip->chip_id) {
588 case PFUZE3000:
589 pfuze_chip->pfuze_regulators = pfuze3000_regulators;
590 regulator_num = ARRAY_SIZE(pfuze3000_regulators);
591 sw_check_start = PFUZE3000_SW2;
592 sw_check_end = PFUZE3000_SW2;
593 sw_hi = 1 << 3;
594 break;
595 case PFUZE200:
596 pfuze_chip->pfuze_regulators = pfuze200_regulators;
597 regulator_num = ARRAY_SIZE(pfuze200_regulators);
598 sw_check_start = PFUZE200_SW2;
599 sw_check_end = PFUZE200_SW3B;
600 break;
601 case PFUZE100:
602 default:
603 pfuze_chip->pfuze_regulators = pfuze100_regulators;
604 regulator_num = ARRAY_SIZE(pfuze100_regulators);
605 sw_check_start = PFUZE100_SW2;
606 sw_check_end = PFUZE100_SW4;
607 break;
608 }
609 dev_info(&client->dev, "pfuze%s found.\n",
610 (pfuze_chip->chip_id == PFUZE100) ? "100" :
611 ((pfuze_chip->chip_id == PFUZE200) ? "200" : "3000"));
612
613 memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators,
614 sizeof(pfuze_chip->regulator_descs));
615
616 ret = pfuze_parse_regulators_dt(pfuze_chip);
617 if (ret)
618 return ret;
619
620 for (i = 0; i < regulator_num; i++) {
621 struct regulator_init_data *init_data;
622 struct regulator_desc *desc;
623 int val;
624
625 desc = &pfuze_chip->regulator_descs[i].desc;
626
627 if (pdata)
628 init_data = pdata->init_data[i];
629 else
630 init_data = match_init_data(i);
631
632 /* SW2~SW4 high bit check and modify the voltage value table */
633 if (i >= sw_check_start && i <= sw_check_end) {
634 regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val);
635 if (val & sw_hi) {
636 if (pfuze_chip->chip_id == PFUZE3000) {
637 desc->volt_table = pfuze3000_sw2hi;
638 desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi);
639 } else {
640 desc->min_uV = 800000;
641 desc->uV_step = 50000;
642 desc->n_voltages = 51;
643 }
644 }
645 }
646
647 config.dev = &client->dev;
648 config.init_data = init_data;
649 config.driver_data = pfuze_chip;
650 config.of_node = match_of_node(i);
651 config.ena_gpio = -EINVAL;
652
653 pfuze_chip->regulators[i] =
654 devm_regulator_register(&client->dev, desc, &config);
655 if (IS_ERR(pfuze_chip->regulators[i])) {
656 dev_err(&client->dev, "register regulator%s failed\n",
657 pfuze_chip->pfuze_regulators[i].desc.name);
658 return PTR_ERR(pfuze_chip->regulators[i]);
659 }
660 }
661
662 return 0;
663}
664
665static struct i2c_driver pfuze_driver = {
666 .id_table = pfuze_device_id,
667 .driver = {
668 .name = "pfuze100-regulator",
669 .of_match_table = pfuze_dt_ids,
670 },
671 .probe = pfuze100_regulator_probe,
672};
673module_i2c_driver(pfuze_driver);
674
675MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
676MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000 PMIC");
677MODULE_LICENSE("GPL v2");