2 * Broadcom BCM590xx regulator driver
4 * Copyright 2014 Linaro Limited
5 * Author: Matt Porter <mporter@linaro.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 #include <linux/err.h>
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/mfd/bcm590xx.h>
17 #include <linux/module.h>
19 #include <linux/platform_device.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/regulator/of_regulator.h>
23 #include <linux/slab.h>
25 /* I2C slave 0 registers */
26 #define BCM590XX_RFLDOPMCTRL1 0x60
27 #define BCM590XX_IOSR1PMCTRL1 0x7a
28 #define BCM590XX_IOSR2PMCTRL1 0x7c
29 #define BCM590XX_CSRPMCTRL1 0x7e
30 #define BCM590XX_SDSR1PMCTRL1 0x82
31 #define BCM590XX_SDSR2PMCTRL1 0x86
32 #define BCM590XX_MSRPMCTRL1 0x8a
33 #define BCM590XX_VSRPMCTRL1 0x8e
34 #define BCM590XX_RFLDOCTRL 0x96
35 #define BCM590XX_CSRVOUT1 0xc0
37 /* I2C slave 1 registers */
38 #define BCM590XX_GPLDO5PMCTRL1 0x16
39 #define BCM590XX_GPLDO6PMCTRL1 0x18
40 #define BCM590XX_GPLDO1CTRL 0x1a
41 #define BCM590XX_GPLDO2CTRL 0x1b
42 #define BCM590XX_GPLDO3CTRL 0x1c
43 #define BCM590XX_GPLDO4CTRL 0x1d
44 #define BCM590XX_GPLDO5CTRL 0x1e
45 #define BCM590XX_GPLDO6CTRL 0x1f
46 #define BCM590XX_OTG_CTRL 0x40
47 #define BCM590XX_GPLDO1PMCTRL1 0x57
48 #define BCM590XX_GPLDO2PMCTRL1 0x59
49 #define BCM590XX_GPLDO3PMCTRL1 0x5b
50 #define BCM590XX_GPLDO4PMCTRL1 0x5d
52 #define BCM590XX_REG_ENABLE BIT(7)
53 #define BCM590XX_VBUS_ENABLE BIT(2)
54 #define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
55 #define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)
58 * RFLDO to VSR regulators are
59 * accessed via I2C slave 0
62 /* LDO regulator IDs */
63 #define BCM590XX_REG_RFLDO 0
64 #define BCM590XX_REG_CAMLDO1 1
65 #define BCM590XX_REG_CAMLDO2 2
66 #define BCM590XX_REG_SIMLDO1 3
67 #define BCM590XX_REG_SIMLDO2 4
68 #define BCM590XX_REG_SDLDO 5
69 #define BCM590XX_REG_SDXLDO 6
70 #define BCM590XX_REG_MMCLDO1 7
71 #define BCM590XX_REG_MMCLDO2 8
72 #define BCM590XX_REG_AUDLDO 9
73 #define BCM590XX_REG_MICLDO 10
74 #define BCM590XX_REG_USBLDO 11
75 #define BCM590XX_REG_VIBLDO 12
77 /* DCDC regulator IDs */
78 #define BCM590XX_REG_CSR 13
79 #define BCM590XX_REG_IOSR1 14
80 #define BCM590XX_REG_IOSR2 15
81 #define BCM590XX_REG_MSR 16
82 #define BCM590XX_REG_SDSR1 17
83 #define BCM590XX_REG_SDSR2 18
84 #define BCM590XX_REG_VSR 19
87 * GPLDO1 to VBUS regulators are
88 * accessed via I2C slave 1
91 #define BCM590XX_REG_GPLDO1 20
92 #define BCM590XX_REG_GPLDO2 21
93 #define BCM590XX_REG_GPLDO3 22
94 #define BCM590XX_REG_GPLDO4 23
95 #define BCM590XX_REG_GPLDO5 24
96 #define BCM590XX_REG_GPLDO6 25
97 #define BCM590XX_REG_VBUS 26
99 #define BCM590XX_NUM_REGS 27
101 #define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
102 #define BCM590XX_REG_IS_GPLDO(n) \
103 ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
104 #define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS)
106 struct bcm590xx_board
{
107 struct regulator_init_data
*bcm590xx_pmu_init_data
[BCM590XX_NUM_REGS
];
110 /* LDO group A: supported voltages in microvolts */
111 static const unsigned int ldo_a_table
[] = {
112 1200000, 1800000, 2500000, 2700000, 2800000,
113 2900000, 3000000, 3300000,
116 /* LDO group C: supported voltages in microvolts */
117 static const unsigned int ldo_c_table
[] = {
118 3100000, 1800000, 2500000, 2700000, 2800000,
119 2900000, 3000000, 3300000,
122 static const unsigned int ldo_vbus
[] = {
126 /* DCDC group CSR: supported voltages in microvolts */
127 static const struct regulator_linear_range dcdc_csr_ranges
[] = {
128 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
129 REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
130 REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
133 /* DCDC group IOSR1: supported voltages in microvolts */
134 static const struct regulator_linear_range dcdc_iosr1_ranges
[] = {
135 REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
136 REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
137 REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
138 REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
141 /* DCDC group SDSR1: supported voltages in microvolts */
142 static const struct regulator_linear_range dcdc_sdsr1_ranges
[] = {
143 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
144 REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
145 REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
148 struct bcm590xx_info
{
150 const char *vin_name
;
152 const unsigned int *volt_table
;
154 const struct regulator_linear_range
*linear_ranges
;
157 #define BCM590XX_REG_TABLE(_name, _table) \
160 .n_voltages = ARRAY_SIZE(_table), \
161 .volt_table = _table, \
164 #define BCM590XX_REG_RANGES(_name, _ranges) \
168 .n_linear_ranges = ARRAY_SIZE(_ranges), \
169 .linear_ranges = _ranges, \
172 static struct bcm590xx_info bcm590xx_regs
[] = {
173 BCM590XX_REG_TABLE(rfldo
, ldo_a_table
),
174 BCM590XX_REG_TABLE(camldo1
, ldo_c_table
),
175 BCM590XX_REG_TABLE(camldo2
, ldo_c_table
),
176 BCM590XX_REG_TABLE(simldo1
, ldo_a_table
),
177 BCM590XX_REG_TABLE(simldo2
, ldo_a_table
),
178 BCM590XX_REG_TABLE(sdldo
, ldo_c_table
),
179 BCM590XX_REG_TABLE(sdxldo
, ldo_a_table
),
180 BCM590XX_REG_TABLE(mmcldo1
, ldo_a_table
),
181 BCM590XX_REG_TABLE(mmcldo2
, ldo_a_table
),
182 BCM590XX_REG_TABLE(audldo
, ldo_a_table
),
183 BCM590XX_REG_TABLE(micldo
, ldo_a_table
),
184 BCM590XX_REG_TABLE(usbldo
, ldo_a_table
),
185 BCM590XX_REG_TABLE(vibldo
, ldo_c_table
),
186 BCM590XX_REG_RANGES(csr
, dcdc_csr_ranges
),
187 BCM590XX_REG_RANGES(iosr1
, dcdc_iosr1_ranges
),
188 BCM590XX_REG_RANGES(iosr2
, dcdc_iosr1_ranges
),
189 BCM590XX_REG_RANGES(msr
, dcdc_iosr1_ranges
),
190 BCM590XX_REG_RANGES(sdsr1
, dcdc_sdsr1_ranges
),
191 BCM590XX_REG_RANGES(sdsr2
, dcdc_iosr1_ranges
),
192 BCM590XX_REG_RANGES(vsr
, dcdc_iosr1_ranges
),
193 BCM590XX_REG_TABLE(gpldo1
, ldo_a_table
),
194 BCM590XX_REG_TABLE(gpldo2
, ldo_a_table
),
195 BCM590XX_REG_TABLE(gpldo3
, ldo_a_table
),
196 BCM590XX_REG_TABLE(gpldo4
, ldo_a_table
),
197 BCM590XX_REG_TABLE(gpldo5
, ldo_a_table
),
198 BCM590XX_REG_TABLE(gpldo6
, ldo_a_table
),
199 BCM590XX_REG_TABLE(vbus
, ldo_vbus
),
202 struct bcm590xx_reg
{
203 struct regulator_desc
*desc
;
204 struct bcm590xx
*mfd
;
207 static int bcm590xx_get_vsel_register(int id
)
209 if (BCM590XX_REG_IS_LDO(id
))
210 return BCM590XX_RFLDOCTRL
+ id
;
211 else if (BCM590XX_REG_IS_GPLDO(id
))
212 return BCM590XX_GPLDO1CTRL
+ id
;
214 return BCM590XX_CSRVOUT1
+ (id
- BCM590XX_REG_CSR
) * 3;
217 static int bcm590xx_get_enable_register(int id
)
221 if (BCM590XX_REG_IS_LDO(id
))
222 reg
= BCM590XX_RFLDOPMCTRL1
+ id
* 2;
223 else if (BCM590XX_REG_IS_GPLDO(id
))
224 reg
= BCM590XX_GPLDO1PMCTRL1
+ id
* 2;
227 case BCM590XX_REG_CSR
:
228 reg
= BCM590XX_CSRPMCTRL1
;
230 case BCM590XX_REG_IOSR1
:
231 reg
= BCM590XX_IOSR1PMCTRL1
;
233 case BCM590XX_REG_IOSR2
:
234 reg
= BCM590XX_IOSR2PMCTRL1
;
236 case BCM590XX_REG_MSR
:
237 reg
= BCM590XX_MSRPMCTRL1
;
239 case BCM590XX_REG_SDSR1
:
240 reg
= BCM590XX_SDSR1PMCTRL1
;
242 case BCM590XX_REG_SDSR2
:
243 reg
= BCM590XX_SDSR2PMCTRL1
;
245 case BCM590XX_REG_VSR
:
246 reg
= BCM590XX_VSRPMCTRL1
;
248 case BCM590XX_REG_VBUS
:
249 reg
= BCM590XX_OTG_CTRL
;
257 static const struct regulator_ops bcm590xx_ops_ldo
= {
258 .is_enabled
= regulator_is_enabled_regmap
,
259 .enable
= regulator_enable_regmap
,
260 .disable
= regulator_disable_regmap
,
261 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
262 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
263 .list_voltage
= regulator_list_voltage_table
,
264 .map_voltage
= regulator_map_voltage_iterate
,
267 static const struct regulator_ops bcm590xx_ops_dcdc
= {
268 .is_enabled
= regulator_is_enabled_regmap
,
269 .enable
= regulator_enable_regmap
,
270 .disable
= regulator_disable_regmap
,
271 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
272 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
273 .list_voltage
= regulator_list_voltage_linear_range
,
274 .map_voltage
= regulator_map_voltage_linear_range
,
277 static const struct regulator_ops bcm590xx_ops_vbus
= {
278 .is_enabled
= regulator_is_enabled_regmap
,
279 .enable
= regulator_enable_regmap
,
280 .disable
= regulator_disable_regmap
,
283 #define BCM590XX_MATCH(_name, _id) \
286 .driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \
289 static struct of_regulator_match bcm590xx_matches
[] = {
290 BCM590XX_MATCH(rfldo
, RFLDO
),
291 BCM590XX_MATCH(camldo1
, CAMLDO1
),
292 BCM590XX_MATCH(camldo2
, CAMLDO2
),
293 BCM590XX_MATCH(simldo1
, SIMLDO1
),
294 BCM590XX_MATCH(simldo2
, SIMLDO2
),
295 BCM590XX_MATCH(sdldo
, SDLDO
),
296 BCM590XX_MATCH(sdxldo
, SDXLDO
),
297 BCM590XX_MATCH(mmcldo1
, MMCLDO1
),
298 BCM590XX_MATCH(mmcldo2
, MMCLDO2
),
299 BCM590XX_MATCH(audldo
, AUDLDO
),
300 BCM590XX_MATCH(micldo
, MICLDO
),
301 BCM590XX_MATCH(usbldo
, USBLDO
),
302 BCM590XX_MATCH(vibldo
, VIBLDO
),
303 BCM590XX_MATCH(csr
, CSR
),
304 BCM590XX_MATCH(iosr1
, IOSR1
),
305 BCM590XX_MATCH(iosr2
, IOSR2
),
306 BCM590XX_MATCH(msr
, MSR
),
307 BCM590XX_MATCH(sdsr1
, SDSR1
),
308 BCM590XX_MATCH(sdsr2
, SDSR2
),
309 BCM590XX_MATCH(vsr
, VSR
),
310 BCM590XX_MATCH(gpldo1
, GPLDO1
),
311 BCM590XX_MATCH(gpldo2
, GPLDO2
),
312 BCM590XX_MATCH(gpldo3
, GPLDO3
),
313 BCM590XX_MATCH(gpldo4
, GPLDO4
),
314 BCM590XX_MATCH(gpldo5
, GPLDO5
),
315 BCM590XX_MATCH(gpldo6
, GPLDO6
),
316 BCM590XX_MATCH(vbus
, VBUS
),
319 static struct bcm590xx_board
*bcm590xx_parse_dt_reg_data(
320 struct platform_device
*pdev
,
321 struct of_regulator_match
**bcm590xx_reg_matches
)
323 struct bcm590xx_board
*data
;
324 struct device_node
*np
= pdev
->dev
.parent
->of_node
;
325 struct device_node
*regulators
;
326 struct of_regulator_match
*matches
= bcm590xx_matches
;
327 int count
= ARRAY_SIZE(bcm590xx_matches
);
332 dev_err(&pdev
->dev
, "of node not found\n");
336 data
= devm_kzalloc(&pdev
->dev
, sizeof(*data
), GFP_KERNEL
);
340 np
= of_node_get(np
);
341 regulators
= of_get_child_by_name(np
, "regulators");
343 dev_warn(&pdev
->dev
, "regulator node not found\n");
347 ret
= of_regulator_match(&pdev
->dev
, regulators
, matches
, count
);
348 of_node_put(regulators
);
350 dev_err(&pdev
->dev
, "Error parsing regulator init data: %d\n",
355 *bcm590xx_reg_matches
= matches
;
357 for (idx
= 0; idx
< count
; idx
++) {
358 if (!matches
[idx
].init_data
|| !matches
[idx
].of_node
)
361 data
->bcm590xx_pmu_init_data
[idx
] = matches
[idx
].init_data
;
367 static int bcm590xx_probe(struct platform_device
*pdev
)
369 struct bcm590xx
*bcm590xx
= dev_get_drvdata(pdev
->dev
.parent
);
370 struct bcm590xx_board
*pmu_data
= NULL
;
371 struct bcm590xx_reg
*pmu
;
372 struct regulator_config config
= { };
373 struct bcm590xx_info
*info
;
374 struct regulator_init_data
*reg_data
;
375 struct regulator_dev
*rdev
;
376 struct of_regulator_match
*bcm590xx_reg_matches
= NULL
;
379 pmu_data
= bcm590xx_parse_dt_reg_data(pdev
,
380 &bcm590xx_reg_matches
);
382 pmu
= devm_kzalloc(&pdev
->dev
, sizeof(*pmu
), GFP_KERNEL
);
388 platform_set_drvdata(pdev
, pmu
);
390 pmu
->desc
= devm_kcalloc(&pdev
->dev
,
392 sizeof(struct regulator_desc
),
397 info
= bcm590xx_regs
;
399 for (i
= 0; i
< BCM590XX_NUM_REGS
; i
++, info
++) {
401 reg_data
= pmu_data
->bcm590xx_pmu_init_data
[i
];
405 /* Register the regulators */
406 pmu
->desc
[i
].name
= info
->name
;
407 pmu
->desc
[i
].supply_name
= info
->vin_name
;
409 pmu
->desc
[i
].volt_table
= info
->volt_table
;
410 pmu
->desc
[i
].n_voltages
= info
->n_voltages
;
411 pmu
->desc
[i
].linear_ranges
= info
->linear_ranges
;
412 pmu
->desc
[i
].n_linear_ranges
= info
->n_linear_ranges
;
414 if ((BCM590XX_REG_IS_LDO(i
)) || (BCM590XX_REG_IS_GPLDO(i
))) {
415 pmu
->desc
[i
].ops
= &bcm590xx_ops_ldo
;
416 pmu
->desc
[i
].vsel_mask
= BCM590XX_LDO_VSEL_MASK
;
417 } else if (BCM590XX_REG_IS_VBUS(i
))
418 pmu
->desc
[i
].ops
= &bcm590xx_ops_vbus
;
420 pmu
->desc
[i
].ops
= &bcm590xx_ops_dcdc
;
421 pmu
->desc
[i
].vsel_mask
= BCM590XX_SR_VSEL_MASK
;
424 if (BCM590XX_REG_IS_VBUS(i
))
425 pmu
->desc
[i
].enable_mask
= BCM590XX_VBUS_ENABLE
;
427 pmu
->desc
[i
].vsel_reg
= bcm590xx_get_vsel_register(i
);
428 pmu
->desc
[i
].enable_is_inverted
= true;
429 pmu
->desc
[i
].enable_mask
= BCM590XX_REG_ENABLE
;
431 pmu
->desc
[i
].enable_reg
= bcm590xx_get_enable_register(i
);
432 pmu
->desc
[i
].type
= REGULATOR_VOLTAGE
;
433 pmu
->desc
[i
].owner
= THIS_MODULE
;
435 config
.dev
= bcm590xx
->dev
;
436 config
.init_data
= reg_data
;
437 config
.driver_data
= pmu
;
438 if (BCM590XX_REG_IS_GPLDO(i
) || BCM590XX_REG_IS_VBUS(i
))
439 config
.regmap
= bcm590xx
->regmap_sec
;
441 config
.regmap
= bcm590xx
->regmap_pri
;
443 if (bcm590xx_reg_matches
)
444 config
.of_node
= bcm590xx_reg_matches
[i
].of_node
;
446 rdev
= devm_regulator_register(&pdev
->dev
, &pmu
->desc
[i
],
449 dev_err(bcm590xx
->dev
,
450 "failed to register %s regulator\n",
452 return PTR_ERR(rdev
);
459 static struct platform_driver bcm590xx_regulator_driver
= {
461 .name
= "bcm590xx-vregs",
463 .probe
= bcm590xx_probe
,
465 module_platform_driver(bcm590xx_regulator_driver
);
467 MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
468 MODULE_DESCRIPTION("BCM590xx voltage regulator driver");
469 MODULE_LICENSE("GPL v2");
470 MODULE_ALIAS("platform:bcm590xx-vregs");