2 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
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.
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.
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
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/err.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>
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
39 #define PFUZE100_DEVICEID 0x0
40 #define PFUZE100_REVID 0x3
41 #define PFUZE100_FABID 0x4
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
59 enum chips
{ PFUZE100
, PFUZE200
};
61 struct pfuze_regulator
{
62 struct regulator_desc desc
;
63 unsigned char stby_reg
;
64 unsigned char stby_mask
;
69 struct regmap
*regmap
;
71 struct pfuze_regulator regulator_descs
[PFUZE100_MAX_REGULATOR
];
72 struct regulator_dev
*regulators
[PFUZE100_MAX_REGULATOR
];
75 static const int pfuze100_swbst
[] = {
76 5000000, 5050000, 5100000, 5150000,
79 static const int pfuze100_vsnvs
[] = {
80 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
83 static const struct i2c_device_id pfuze_device_id
[] = {
84 {.name
= "pfuze100", .driver_data
= PFUZE100
},
85 {.name
= "pfuze200", .driver_data
= PFUZE200
},
88 MODULE_DEVICE_TABLE(i2c
, pfuze_device_id
);
90 static const struct of_device_id pfuze_dt_ids
[] = {
91 { .compatible
= "fsl,pfuze100", .data
= (void *)PFUZE100
},
92 { .compatible
= "fsl,pfuze200", .data
= (void *)PFUZE200
},
95 MODULE_DEVICE_TABLE(of
, pfuze_dt_ids
);
97 static int pfuze100_set_ramp_delay(struct regulator_dev
*rdev
, int ramp_delay
)
99 struct pfuze_chip
*pfuze100
= rdev_get_drvdata(rdev
);
100 int id
= rdev_get_id(rdev
);
101 unsigned int ramp_bits
;
104 if (id
< PFUZE100_SWBST
) {
105 ramp_delay
= 12500 / ramp_delay
;
106 ramp_bits
= (ramp_delay
>> 1) - (ramp_delay
>> 3);
107 ret
= regmap_update_bits(pfuze100
->regmap
,
108 rdev
->desc
->vsel_reg
+ 4,
109 0xc0, ramp_bits
<< 6);
111 dev_err(pfuze100
->dev
, "ramp failed, err %d\n", ret
);
118 static struct regulator_ops pfuze100_ldo_regulator_ops
= {
119 .enable
= regulator_enable_regmap
,
120 .disable
= regulator_disable_regmap
,
121 .is_enabled
= regulator_is_enabled_regmap
,
122 .list_voltage
= regulator_list_voltage_linear
,
123 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
124 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
127 static struct regulator_ops pfuze100_fixed_regulator_ops
= {
128 .list_voltage
= regulator_list_voltage_linear
,
131 static struct regulator_ops pfuze100_sw_regulator_ops
= {
132 .list_voltage
= regulator_list_voltage_linear
,
133 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
134 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
135 .set_voltage_time_sel
= regulator_set_voltage_time_sel
,
136 .set_ramp_delay
= pfuze100_set_ramp_delay
,
139 static struct regulator_ops pfuze100_swb_regulator_ops
= {
140 .list_voltage
= regulator_list_voltage_table
,
141 .map_voltage
= regulator_map_voltage_ascend
,
142 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
143 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
147 #define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \
148 [_chip ## _ ## _name] = { \
152 .ops = &pfuze100_fixed_regulator_ops, \
153 .type = REGULATOR_VOLTAGE, \
154 .id = _chip ## _ ## _name, \
155 .owner = THIS_MODULE, \
156 .min_uV = (voltage), \
157 .enable_reg = (base), \
158 .enable_mask = 0x10, \
162 #define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \
163 [_chip ## _ ## _name] = { \
166 .n_voltages = ((max) - (min)) / (step) + 1, \
167 .ops = &pfuze100_sw_regulator_ops, \
168 .type = REGULATOR_VOLTAGE, \
169 .id = _chip ## _ ## _name, \
170 .owner = THIS_MODULE, \
173 .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
176 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
180 #define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \
181 [_chip ## _ ## _name] = { \
184 .n_voltages = ARRAY_SIZE(voltages), \
185 .ops = &pfuze100_swb_regulator_ops, \
186 .type = REGULATOR_VOLTAGE, \
187 .id = _chip ## _ ## _name, \
188 .owner = THIS_MODULE, \
189 .volt_table = voltages, \
190 .vsel_reg = (base), \
191 .vsel_mask = (mask), \
195 #define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \
196 [_chip ## _ ## _name] = { \
199 .n_voltages = ((max) - (min)) / (step) + 1, \
200 .ops = &pfuze100_ldo_regulator_ops, \
201 .type = REGULATOR_VOLTAGE, \
202 .id = _chip ## _ ## _name, \
203 .owner = THIS_MODULE, \
206 .vsel_reg = (base), \
208 .enable_reg = (base), \
209 .enable_mask = 0x10, \
211 .stby_reg = (base), \
216 static struct pfuze_regulator pfuze100_regulators
[] = {
217 PFUZE100_SW_REG(PFUZE100
, SW1AB
, PFUZE100_SW1ABVOL
, 300000, 1875000, 25000),
218 PFUZE100_SW_REG(PFUZE100
, SW1C
, PFUZE100_SW1CVOL
, 300000, 1875000, 25000),
219 PFUZE100_SW_REG(PFUZE100
, SW2
, PFUZE100_SW2VOL
, 400000, 1975000, 25000),
220 PFUZE100_SW_REG(PFUZE100
, SW3A
, PFUZE100_SW3AVOL
, 400000, 1975000, 25000),
221 PFUZE100_SW_REG(PFUZE100
, SW3B
, PFUZE100_SW3BVOL
, 400000, 1975000, 25000),
222 PFUZE100_SW_REG(PFUZE100
, SW4
, PFUZE100_SW4VOL
, 400000, 1975000, 25000),
223 PFUZE100_SWB_REG(PFUZE100
, SWBST
, PFUZE100_SWBSTCON1
, 0x3 , pfuze100_swbst
),
224 PFUZE100_SWB_REG(PFUZE100
, VSNVS
, PFUZE100_VSNVSVOL
, 0x7, pfuze100_vsnvs
),
225 PFUZE100_FIXED_REG(PFUZE100
, VREFDDR
, PFUZE100_VREFDDRCON
, 750000),
226 PFUZE100_VGEN_REG(PFUZE100
, VGEN1
, PFUZE100_VGEN1VOL
, 800000, 1550000, 50000),
227 PFUZE100_VGEN_REG(PFUZE100
, VGEN2
, PFUZE100_VGEN2VOL
, 800000, 1550000, 50000),
228 PFUZE100_VGEN_REG(PFUZE100
, VGEN3
, PFUZE100_VGEN3VOL
, 1800000, 3300000, 100000),
229 PFUZE100_VGEN_REG(PFUZE100
, VGEN4
, PFUZE100_VGEN4VOL
, 1800000, 3300000, 100000),
230 PFUZE100_VGEN_REG(PFUZE100
, VGEN5
, PFUZE100_VGEN5VOL
, 1800000, 3300000, 100000),
231 PFUZE100_VGEN_REG(PFUZE100
, VGEN6
, PFUZE100_VGEN6VOL
, 1800000, 3300000, 100000),
234 static struct pfuze_regulator pfuze200_regulators
[] = {
235 PFUZE100_SW_REG(PFUZE200
, SW1AB
, PFUZE100_SW1ABVOL
, 300000, 1875000, 25000),
236 PFUZE100_SW_REG(PFUZE200
, SW2
, PFUZE100_SW2VOL
, 400000, 1975000, 25000),
237 PFUZE100_SW_REG(PFUZE200
, SW3A
, PFUZE100_SW3AVOL
, 400000, 1975000, 25000),
238 PFUZE100_SW_REG(PFUZE200
, SW3B
, PFUZE100_SW3BVOL
, 400000, 1975000, 25000),
239 PFUZE100_SWB_REG(PFUZE200
, SWBST
, PFUZE100_SWBSTCON1
, 0x3 , pfuze100_swbst
),
240 PFUZE100_SWB_REG(PFUZE200
, VSNVS
, PFUZE100_VSNVSVOL
, 0x7, pfuze100_vsnvs
),
241 PFUZE100_FIXED_REG(PFUZE200
, VREFDDR
, PFUZE100_VREFDDRCON
, 750000),
242 PFUZE100_VGEN_REG(PFUZE200
, VGEN1
, PFUZE100_VGEN1VOL
, 800000, 1550000, 50000),
243 PFUZE100_VGEN_REG(PFUZE200
, VGEN2
, PFUZE100_VGEN2VOL
, 800000, 1550000, 50000),
244 PFUZE100_VGEN_REG(PFUZE200
, VGEN3
, PFUZE100_VGEN3VOL
, 1800000, 3300000, 100000),
245 PFUZE100_VGEN_REG(PFUZE200
, VGEN4
, PFUZE100_VGEN4VOL
, 1800000, 3300000, 100000),
246 PFUZE100_VGEN_REG(PFUZE200
, VGEN5
, PFUZE100_VGEN5VOL
, 1800000, 3300000, 100000),
247 PFUZE100_VGEN_REG(PFUZE200
, VGEN6
, PFUZE100_VGEN6VOL
, 1800000, 3300000, 100000),
250 static struct pfuze_regulator
*pfuze_regulators
;
254 static struct of_regulator_match pfuze100_matches
[] = {
255 { .name
= "sw1ab", },
261 { .name
= "swbst", },
262 { .name
= "vsnvs", },
263 { .name
= "vrefddr", },
264 { .name
= "vgen1", },
265 { .name
= "vgen2", },
266 { .name
= "vgen3", },
267 { .name
= "vgen4", },
268 { .name
= "vgen5", },
269 { .name
= "vgen6", },
273 static struct of_regulator_match pfuze200_matches
[] = {
275 { .name
= "sw1ab", },
279 { .name
= "swbst", },
280 { .name
= "vsnvs", },
281 { .name
= "vrefddr", },
282 { .name
= "vgen1", },
283 { .name
= "vgen2", },
284 { .name
= "vgen3", },
285 { .name
= "vgen4", },
286 { .name
= "vgen5", },
287 { .name
= "vgen6", },
290 static struct of_regulator_match
*pfuze_matches
;
292 static int pfuze_parse_regulators_dt(struct pfuze_chip
*chip
)
294 struct device
*dev
= chip
->dev
;
295 struct device_node
*np
, *parent
;
298 np
= of_node_get(dev
->of_node
);
302 parent
= of_get_child_by_name(np
, "regulators");
304 dev_err(dev
, "regulators node not found\n");
308 switch (chip
->chip_id
) {
310 pfuze_matches
= pfuze200_matches
;
311 ret
= of_regulator_match(dev
, parent
, pfuze200_matches
,
312 ARRAY_SIZE(pfuze200_matches
));
317 pfuze_matches
= pfuze100_matches
;
318 ret
= of_regulator_match(dev
, parent
, pfuze100_matches
,
319 ARRAY_SIZE(pfuze100_matches
));
325 dev_err(dev
, "Error parsing regulator init data: %d\n",
333 static inline struct regulator_init_data
*match_init_data(int index
)
335 return pfuze_matches
[index
].init_data
;
338 static inline struct device_node
*match_of_node(int index
)
340 return pfuze_matches
[index
].of_node
;
343 static int pfuze_parse_regulators_dt(struct pfuze_chip
*chip
)
348 static inline struct regulator_init_data
*match_init_data(int index
)
353 static inline struct device_node
*match_of_node(int index
)
359 static int pfuze_identify(struct pfuze_chip
*pfuze_chip
)
364 ret
= regmap_read(pfuze_chip
->regmap
, PFUZE100_DEVICEID
, &value
);
368 if (((value
& 0x0f) == 0x8) && (pfuze_chip
->chip_id
== PFUZE100
)) {
370 * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013
371 * as ID=8 in PFUZE100
373 dev_info(pfuze_chip
->dev
, "Assuming misprogrammed ID=0x8");
374 } else if ((value
& 0x0f) != pfuze_chip
->chip_id
) {
375 /* device id NOT match with your setting */
376 dev_warn(pfuze_chip
->dev
, "Illegal ID: %x\n", value
);
380 ret
= regmap_read(pfuze_chip
->regmap
, PFUZE100_REVID
, &value
);
383 dev_info(pfuze_chip
->dev
,
384 "Full layer: %x, Metal layer: %x\n",
385 (value
& 0xf0) >> 4, value
& 0x0f);
387 ret
= regmap_read(pfuze_chip
->regmap
, PFUZE100_FABID
, &value
);
390 dev_info(pfuze_chip
->dev
, "FAB: %x, FIN: %x\n",
391 (value
& 0xc) >> 2, value
& 0x3);
396 static const struct regmap_config pfuze_regmap_config
= {
399 .max_register
= PFUZE_NUMREGS
- 1,
400 .cache_type
= REGCACHE_RBTREE
,
403 static int pfuze100_regulator_probe(struct i2c_client
*client
,
404 const struct i2c_device_id
*id
)
406 struct pfuze_chip
*pfuze_chip
;
407 struct pfuze_regulator_platform_data
*pdata
=
408 dev_get_platdata(&client
->dev
);
409 struct regulator_config config
= { };
411 const struct of_device_id
*match
;
413 u32 sw_check_start
, sw_check_end
;
415 pfuze_chip
= devm_kzalloc(&client
->dev
, sizeof(*pfuze_chip
),
420 if (client
->dev
.of_node
) {
421 match
= of_match_device(of_match_ptr(pfuze_dt_ids
),
424 dev_err(&client
->dev
, "Error: No device match found\n");
427 pfuze_chip
->chip_id
= (int)(long)match
->data
;
429 pfuze_chip
->chip_id
= id
->driver_data
;
431 dev_err(&client
->dev
, "No dts match or id table match found\n");
435 i2c_set_clientdata(client
, pfuze_chip
);
436 pfuze_chip
->dev
= &client
->dev
;
438 pfuze_chip
->regmap
= devm_regmap_init_i2c(client
, &pfuze_regmap_config
);
439 if (IS_ERR(pfuze_chip
->regmap
)) {
440 ret
= PTR_ERR(pfuze_chip
->regmap
);
441 dev_err(&client
->dev
,
442 "regmap allocation failed with err %d\n", ret
);
446 ret
= pfuze_identify(pfuze_chip
);
448 dev_err(&client
->dev
, "unrecognized pfuze chip ID!\n");
452 /* use the right regulators after identify the right device */
453 switch (pfuze_chip
->chip_id
) {
455 pfuze_regulators
= pfuze200_regulators
;
456 regulator_num
= ARRAY_SIZE(pfuze200_regulators
);
457 sw_check_start
= PFUZE200_SW2
;
458 sw_check_end
= PFUZE200_SW3B
;
463 pfuze_regulators
= pfuze100_regulators
;
464 regulator_num
= ARRAY_SIZE(pfuze100_regulators
);
465 sw_check_start
= PFUZE100_SW2
;
466 sw_check_end
= PFUZE100_SW4
;
469 dev_info(&client
->dev
, "pfuze%s found.\n",
470 (pfuze_chip
->chip_id
== PFUZE100
) ? "100" : "200");
472 memcpy(pfuze_chip
->regulator_descs
, pfuze_regulators
,
473 sizeof(pfuze_chip
->regulator_descs
));
475 ret
= pfuze_parse_regulators_dt(pfuze_chip
);
479 for (i
= 0; i
< regulator_num
; i
++) {
480 struct regulator_init_data
*init_data
;
481 struct regulator_desc
*desc
;
484 desc
= &pfuze_chip
->regulator_descs
[i
].desc
;
487 init_data
= pdata
->init_data
[i
];
489 init_data
= match_init_data(i
);
491 /* SW2~SW4 high bit check and modify the voltage value table */
492 if (i
>= sw_check_start
&& i
<= sw_check_end
) {
493 regmap_read(pfuze_chip
->regmap
, desc
->vsel_reg
, &val
);
495 desc
->min_uV
= 800000;
496 desc
->uV_step
= 50000;
497 desc
->n_voltages
= 51;
501 config
.dev
= &client
->dev
;
502 config
.init_data
= init_data
;
503 config
.driver_data
= pfuze_chip
;
504 config
.of_node
= match_of_node(i
);
506 pfuze_chip
->regulators
[i
] =
507 devm_regulator_register(&client
->dev
, desc
, &config
);
508 if (IS_ERR(pfuze_chip
->regulators
[i
])) {
509 dev_err(&client
->dev
, "register regulator%s failed\n",
510 pfuze_regulators
[i
].desc
.name
);
511 return PTR_ERR(pfuze_chip
->regulators
[i
]);
518 static struct i2c_driver pfuze_driver
= {
519 .id_table
= pfuze_device_id
,
521 .name
= "pfuze100-regulator",
522 .owner
= THIS_MODULE
,
523 .of_match_table
= pfuze_dt_ids
,
525 .probe
= pfuze100_regulator_probe
,
527 module_i2c_driver(pfuze_driver
);
529 MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
530 MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/PFUZE200 PMIC");
531 MODULE_LICENSE("GPL v2");
532 MODULE_ALIAS("i2c:pfuze100-regulator");