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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_SW1ABVOL 0x20
44#define PFUZE100_SW1CVOL 0x2e
45#define PFUZE100_SW2VOL 0x35
46#define PFUZE100_SW3AVOL 0x3c
47#define PFUZE100_SW3BVOL 0x43
48#define PFUZE100_SW4VOL 0x4a
49#define PFUZE100_SWBSTCON1 0x66
50#define PFUZE100_VREFDDRCON 0x6a
51#define PFUZE100_VSNVSVOL 0x6b
52#define PFUZE100_VGEN1VOL 0x6c
53#define PFUZE100_VGEN2VOL 0x6d
54#define PFUZE100_VGEN3VOL 0x6e
55#define PFUZE100_VGEN4VOL 0x6f
56#define PFUZE100_VGEN5VOL 0x70
57#define PFUZE100_VGEN6VOL 0x71
58
59enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3 };
60
61struct pfuze_regulator {
62 struct regulator_desc desc;
63 unsigned char stby_reg;
64 unsigned char stby_mask;
65};
66
67struct pfuze_chip {
68 int chip_id;
69 struct regmap *regmap;
70 struct device *dev;
71 struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
72 struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR];
73 struct pfuze_regulator *pfuze_regulators;
74};
75
76static const int pfuze100_swbst[] = {
77 5000000, 5050000, 5100000, 5150000,
78};
79
80static const int pfuze100_vsnvs[] = {
81 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
82};
83
84static const int pfuze3000_sw2lo[] = {
85 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000,
86};
87
88static const int pfuze3000_sw2hi[] = {
89 2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000,
90};
91
92static const struct i2c_device_id pfuze_device_id[] = {
93 {.name = "pfuze100", .driver_data = PFUZE100},
94 {.name = "pfuze200", .driver_data = PFUZE200},
95 {.name = "pfuze3000", .driver_data = PFUZE3000},
96 { }
97};
98MODULE_DEVICE_TABLE(i2c, pfuze_device_id);
99
100static const struct of_device_id pfuze_dt_ids[] = {
101 { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100},
102 { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200},
103 { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000},
104 { }
105};
106MODULE_DEVICE_TABLE(of, pfuze_dt_ids);
107
108static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
109{
110 struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
111 int id = rdev_get_id(rdev);
112 unsigned int ramp_bits;
113 int ret;
114
115 if (id < PFUZE100_SWBST) {
116 ramp_delay = 12500 / ramp_delay;
117 ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
118 ret = regmap_update_bits(pfuze100->regmap,
119 rdev->desc->vsel_reg + 4,
120 0xc0, ramp_bits << 6);
121 if (ret < 0)
122 dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
123 } else
124 ret = -EACCES;
125
126 return ret;
127}
128
129static struct regulator_ops pfuze100_ldo_regulator_ops = {
130 .enable = regulator_enable_regmap,
131 .disable = regulator_disable_regmap,
132 .is_enabled = regulator_is_enabled_regmap,
133 .list_voltage = regulator_list_voltage_linear,
134 .set_voltage_sel = regulator_set_voltage_sel_regmap,
135 .get_voltage_sel = regulator_get_voltage_sel_regmap,
136};
137
138static struct regulator_ops pfuze100_fixed_regulator_ops = {
139 .enable = regulator_enable_regmap,
140 .disable = regulator_disable_regmap,
141 .is_enabled = regulator_is_enabled_regmap,
142 .list_voltage = regulator_list_voltage_linear,
143};
144
145static struct regulator_ops pfuze100_sw_regulator_ops = {
146 .list_voltage = regulator_list_voltage_linear,
147 .set_voltage_sel = regulator_set_voltage_sel_regmap,
148 .get_voltage_sel = regulator_get_voltage_sel_regmap,
149 .set_voltage_time_sel = regulator_set_voltage_time_sel,
150 .set_ramp_delay = pfuze100_set_ramp_delay,
151};
152
153static struct regulator_ops pfuze100_swb_regulator_ops = {
154 .enable = regulator_enable_regmap,
155 .disable = regulator_disable_regmap,
156 .list_voltage = regulator_list_voltage_table,
157 .map_voltage = regulator_map_voltage_ascend,
158 .set_voltage_sel = regulator_set_voltage_sel_regmap,
159 .get_voltage_sel = regulator_get_voltage_sel_regmap,
160
161};
162
163#define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \
164 [_chip ## _ ## _name] = { \
165 .desc = { \
166 .name = #_name, \
167 .n_voltages = 1, \
168 .ops = &pfuze100_fixed_regulator_ops, \
169 .type = REGULATOR_VOLTAGE, \
170 .id = _chip ## _ ## _name, \
171 .owner = THIS_MODULE, \
172 .min_uV = (voltage), \
173 .enable_reg = (base), \
174 .enable_mask = 0x10, \
175 }, \
176 }
177
178#define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \
179 [_chip ## _ ## _name] = { \
180 .desc = { \
181 .name = #_name,\
182 .n_voltages = ((max) - (min)) / (step) + 1, \
183 .ops = &pfuze100_sw_regulator_ops, \
184 .type = REGULATOR_VOLTAGE, \
185 .id = _chip ## _ ## _name, \
186 .owner = THIS_MODULE, \
187 .min_uV = (min), \
188 .uV_step = (step), \
189 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
190 .vsel_mask = 0x3f, \
191 }, \
192 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
193 .stby_mask = 0x3f, \
194 }
195
196#define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \
197 [_chip ## _ ## _name] = { \
198 .desc = { \
199 .name = #_name, \
200 .n_voltages = ARRAY_SIZE(voltages), \
201 .ops = &pfuze100_swb_regulator_ops, \
202 .type = REGULATOR_VOLTAGE, \
203 .id = _chip ## _ ## _name, \
204 .owner = THIS_MODULE, \
205 .volt_table = voltages, \
206 .vsel_reg = (base), \
207 .vsel_mask = (mask), \
208 .enable_reg = (base), \
209 .enable_mask = 0x48, \
210 }, \
211 }
212
213#define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \
214 [_chip ## _ ## _name] = { \
215 .desc = { \
216 .name = #_name, \
217 .n_voltages = ((max) - (min)) / (step) + 1, \
218 .ops = &pfuze100_ldo_regulator_ops, \
219 .type = REGULATOR_VOLTAGE, \
220 .id = _chip ## _ ## _name, \
221 .owner = THIS_MODULE, \
222 .min_uV = (min), \
223 .uV_step = (step), \
224 .vsel_reg = (base), \
225 .vsel_mask = 0xf, \
226 .enable_reg = (base), \
227 .enable_mask = 0x10, \
228 }, \
229 .stby_reg = (base), \
230 .stby_mask = 0x20, \
231 }
232
233#define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \
234 .desc = { \
235 .name = #_name, \
236 .n_voltages = ((max) - (min)) / (step) + 1, \
237 .ops = &pfuze100_ldo_regulator_ops, \
238 .type = REGULATOR_VOLTAGE, \
239 .id = _chip ## _ ## _name, \
240 .owner = THIS_MODULE, \
241 .min_uV = (min), \
242 .uV_step = (step), \
243 .vsel_reg = (base), \
244 .vsel_mask = 0x3, \
245 .enable_reg = (base), \
246 .enable_mask = 0x10, \
247 }, \
248 .stby_reg = (base), \
249 .stby_mask = 0x20, \
250}
251
252
253#define PFUZE3000_SW2_REG(_chip, _name, base, min, max, step) { \
254 .desc = { \
255 .name = #_name,\
256 .n_voltages = ((max) - (min)) / (step) + 1, \
257 .ops = &pfuze100_sw_regulator_ops, \
258 .type = REGULATOR_VOLTAGE, \
259 .id = _chip ## _ ## _name, \
260 .owner = THIS_MODULE, \
261 .min_uV = (min), \
262 .uV_step = (step), \
263 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
264 .vsel_mask = 0x7, \
265 }, \
266 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
267 .stby_mask = 0x7, \
268}
269
270#define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step) { \
271 .desc = { \
272 .name = #_name,\
273 .n_voltages = ((max) - (min)) / (step) + 1, \
274 .ops = &pfuze100_sw_regulator_ops, \
275 .type = REGULATOR_VOLTAGE, \
276 .id = _chip ## _ ## _name, \
277 .owner = THIS_MODULE, \
278 .min_uV = (min), \
279 .uV_step = (step), \
280 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
281 .vsel_mask = 0xf, \
282 }, \
283 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
284 .stby_mask = 0xf, \
285}
286
287/* PFUZE100 */
288static struct pfuze_regulator pfuze100_regulators[] = {
289 PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
290 PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000),
291 PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
292 PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
293 PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
294 PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000),
295 PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
296 PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
297 PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000),
298 PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
299 PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
300 PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
301 PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
302 PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
303 PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
304};
305
306static struct pfuze_regulator pfuze200_regulators[] = {
307 PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
308 PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
309 PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
310 PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
311 PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
312 PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
313 PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000),
314 PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
315 PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
316 PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
317 PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
318 PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
319 PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
320};
321
322static struct pfuze_regulator pfuze3000_regulators[] = {
323 PFUZE100_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 700000, 1475000, 25000),
324 PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000),
325 PFUZE100_SWB_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
326 PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
327 PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst),
328 PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
329 PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000),
330 PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
331 PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
332 PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
333 PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
334 PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
335 PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
336};
337
338#ifdef CONFIG_OF
339/* PFUZE100 */
340static struct of_regulator_match pfuze100_matches[] = {
341 { .name = "sw1ab", },
342 { .name = "sw1c", },
343 { .name = "sw2", },
344 { .name = "sw3a", },
345 { .name = "sw3b", },
346 { .name = "sw4", },
347 { .name = "swbst", },
348 { .name = "vsnvs", },
349 { .name = "vrefddr", },
350 { .name = "vgen1", },
351 { .name = "vgen2", },
352 { .name = "vgen3", },
353 { .name = "vgen4", },
354 { .name = "vgen5", },
355 { .name = "vgen6", },
356};
357
358/* PFUZE200 */
359static struct of_regulator_match pfuze200_matches[] = {
360
361 { .name = "sw1ab", },
362 { .name = "sw2", },
363 { .name = "sw3a", },
364 { .name = "sw3b", },
365 { .name = "swbst", },
366 { .name = "vsnvs", },
367 { .name = "vrefddr", },
368 { .name = "vgen1", },
369 { .name = "vgen2", },
370 { .name = "vgen3", },
371 { .name = "vgen4", },
372 { .name = "vgen5", },
373 { .name = "vgen6", },
374};
375
376/* PFUZE3000 */
377static struct of_regulator_match pfuze3000_matches[] = {
378
379 { .name = "sw1a", },
380 { .name = "sw1b", },
381 { .name = "sw2", },
382 { .name = "sw3", },
383 { .name = "swbst", },
384 { .name = "vsnvs", },
385 { .name = "vrefddr", },
386 { .name = "vldo1", },
387 { .name = "vldo2", },
388 { .name = "vccsd", },
389 { .name = "v33", },
390 { .name = "vldo3", },
391 { .name = "vldo4", },
392};
393
394static struct of_regulator_match *pfuze_matches;
395
396static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
397{
398 struct device *dev = chip->dev;
399 struct device_node *np, *parent;
400 int ret;
401
402 np = of_node_get(dev->of_node);
403 if (!np)
404 return -EINVAL;
405
406 parent = of_get_child_by_name(np, "regulators");
407 if (!parent) {
408 dev_err(dev, "regulators node not found\n");
409 return -EINVAL;
410 }
411
412 switch (chip->chip_id) {
413 case PFUZE3000:
414 pfuze_matches = pfuze3000_matches;
415 ret = of_regulator_match(dev, parent, pfuze3000_matches,
416 ARRAY_SIZE(pfuze3000_matches));
417 break;
418 case PFUZE200:
419 pfuze_matches = pfuze200_matches;
420 ret = of_regulator_match(dev, parent, pfuze200_matches,
421 ARRAY_SIZE(pfuze200_matches));
422 break;
423
424 case PFUZE100:
425 default:
426 pfuze_matches = pfuze100_matches;
427 ret = of_regulator_match(dev, parent, pfuze100_matches,
428 ARRAY_SIZE(pfuze100_matches));
429 break;
430 }
431
432 of_node_put(parent);
433 if (ret < 0) {
434 dev_err(dev, "Error parsing regulator init data: %d\n",
435 ret);
436 return ret;
437 }
438
439 return 0;
440}
441
442static inline struct regulator_init_data *match_init_data(int index)
443{
444 return pfuze_matches[index].init_data;
445}
446
447static inline struct device_node *match_of_node(int index)
448{
449 return pfuze_matches[index].of_node;
450}
451#else
452static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
453{
454 return 0;
455}
456
457static inline struct regulator_init_data *match_init_data(int index)
458{
459 return NULL;
460}
461
462static inline struct device_node *match_of_node(int index)
463{
464 return NULL;
465}
466#endif
467
468static int pfuze_identify(struct pfuze_chip *pfuze_chip)
469{
470 unsigned int value;
471 int ret;
472
473 ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value);
474 if (ret)
475 return ret;
476
477 if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) {
478 /*
479 * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013
480 * as ID=8 in PFUZE100
481 */
482 dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8");
483 } else if ((value & 0x0f) != pfuze_chip->chip_id &&
484 (value & 0xf0) >> 4 != pfuze_chip->chip_id) {
485 /* device id NOT match with your setting */
486 dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
487 return -ENODEV;
488 }
489
490 ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);
491 if (ret)
492 return ret;
493 dev_info(pfuze_chip->dev,
494 "Full layer: %x, Metal layer: %x\n",
495 (value & 0xf0) >> 4, value & 0x0f);
496
497 ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value);
498 if (ret)
499 return ret;
500 dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n",
501 (value & 0xc) >> 2, value & 0x3);
502
503 return 0;
504}
505
506static const struct regmap_config pfuze_regmap_config = {
507 .reg_bits = 8,
508 .val_bits = 8,
509 .max_register = PFUZE_NUMREGS - 1,
510 .cache_type = REGCACHE_RBTREE,
511};
512
513static int pfuze100_regulator_probe(struct i2c_client *client,
514 const struct i2c_device_id *id)
515{
516 struct pfuze_chip *pfuze_chip;
517 struct pfuze_regulator_platform_data *pdata =
518 dev_get_platdata(&client->dev);
519 struct regulator_config config = { };
520 int i, ret;
521 const struct of_device_id *match;
522 u32 regulator_num;
523 u32 sw_check_start, sw_check_end, sw_hi = 0x40;
524
525 pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip),
526 GFP_KERNEL);
527 if (!pfuze_chip)
528 return -ENOMEM;
529
530 if (client->dev.of_node) {
531 match = of_match_device(of_match_ptr(pfuze_dt_ids),
532 &client->dev);
533 if (!match) {
534 dev_err(&client->dev, "Error: No device match found\n");
535 return -ENODEV;
536 }
537 pfuze_chip->chip_id = (int)(long)match->data;
538 } else if (id) {
539 pfuze_chip->chip_id = id->driver_data;
540 } else {
541 dev_err(&client->dev, "No dts match or id table match found\n");
542 return -ENODEV;
543 }
544
545 i2c_set_clientdata(client, pfuze_chip);
546 pfuze_chip->dev = &client->dev;
547
548 pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config);
549 if (IS_ERR(pfuze_chip->regmap)) {
550 ret = PTR_ERR(pfuze_chip->regmap);
551 dev_err(&client->dev,
552 "regmap allocation failed with err %d\n", ret);
553 return ret;
554 }
555
556 ret = pfuze_identify(pfuze_chip);
557 if (ret) {
558 dev_err(&client->dev, "unrecognized pfuze chip ID!\n");
559 return ret;
560 }
561
562 /* use the right regulators after identify the right device */
563 switch (pfuze_chip->chip_id) {
564 case PFUZE3000:
565 pfuze_chip->pfuze_regulators = pfuze3000_regulators;
566 regulator_num = ARRAY_SIZE(pfuze3000_regulators);
567 sw_check_start = PFUZE3000_SW2;
568 sw_check_end = PFUZE3000_SW2;
569 sw_hi = 1 << 3;
570 break;
571 case PFUZE200:
572 pfuze_chip->pfuze_regulators = pfuze200_regulators;
573 regulator_num = ARRAY_SIZE(pfuze200_regulators);
574 sw_check_start = PFUZE200_SW2;
575 sw_check_end = PFUZE200_SW3B;
576 break;
577 case PFUZE100:
578 default:
579 pfuze_chip->pfuze_regulators = pfuze100_regulators;
580 regulator_num = ARRAY_SIZE(pfuze100_regulators);
581 sw_check_start = PFUZE100_SW2;
582 sw_check_end = PFUZE100_SW4;
583 break;
584 }
585 dev_info(&client->dev, "pfuze%s found.\n",
586 (pfuze_chip->chip_id == PFUZE100) ? "100" :
587 ((pfuze_chip->chip_id == PFUZE200) ? "200" : "3000"));
588
589 memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators,
590 sizeof(pfuze_chip->regulator_descs));
591
592 ret = pfuze_parse_regulators_dt(pfuze_chip);
593 if (ret)
594 return ret;
595
596 for (i = 0; i < regulator_num; i++) {
597 struct regulator_init_data *init_data;
598 struct regulator_desc *desc;
599 int val;
600
601 desc = &pfuze_chip->regulator_descs[i].desc;
602
603 if (pdata)
604 init_data = pdata->init_data[i];
605 else
606 init_data = match_init_data(i);
607
608 /* SW2~SW4 high bit check and modify the voltage value table */
609 if (i >= sw_check_start && i <= sw_check_end) {
610 regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val);
611 if (val & sw_hi) {
612 if (pfuze_chip->chip_id == PFUZE3000) {
613 desc->volt_table = pfuze3000_sw2hi;
614 desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi);
615 } else {
616 desc->min_uV = 800000;
617 desc->uV_step = 50000;
618 desc->n_voltages = 51;
619 }
620 }
621 }
622
623 config.dev = &client->dev;
624 config.init_data = init_data;
625 config.driver_data = pfuze_chip;
626 config.of_node = match_of_node(i);
627 config.ena_gpio = -EINVAL;
628
629 pfuze_chip->regulators[i] =
630 devm_regulator_register(&client->dev, desc, &config);
631 if (IS_ERR(pfuze_chip->regulators[i])) {
632 dev_err(&client->dev, "register regulator%s failed\n",
633 pfuze_chip->pfuze_regulators[i].desc.name);
634 return PTR_ERR(pfuze_chip->regulators[i]);
635 }
636 }
637
638 return 0;
639}
640
641static struct i2c_driver pfuze_driver = {
642 .id_table = pfuze_device_id,
643 .driver = {
644 .name = "pfuze100-regulator",
645 .of_match_table = pfuze_dt_ids,
646 },
647 .probe = pfuze100_regulator_probe,
648};
649module_i2c_driver(pfuze_driver);
650
651MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
652MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000 PMIC");
653MODULE_LICENSE("GPL v2");