1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Broadcom BCM590xx regulator driver
5 * Copyright 2014 Linaro Limited
6 * Author: Matt Porter <mporter@linaro.org>
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/mfd/bcm590xx.h>
13 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <linux/regulator/driver.h>
17 #include <linux/regulator/machine.h>
18 #include <linux/regulator/of_regulator.h>
19 #include <linux/slab.h>
21 /* I2C slave 0 registers */
22 #define BCM590XX_RFLDOPMCTRL1 0x60
23 #define BCM590XX_IOSR1PMCTRL1 0x7a
24 #define BCM590XX_IOSR2PMCTRL1 0x7c
25 #define BCM590XX_CSRPMCTRL1 0x7e
26 #define BCM590XX_SDSR1PMCTRL1 0x82
27 #define BCM590XX_SDSR2PMCTRL1 0x86
28 #define BCM590XX_MSRPMCTRL1 0x8a
29 #define BCM590XX_VSRPMCTRL1 0x8e
30 #define BCM590XX_RFLDOCTRL 0x96
31 #define BCM590XX_CSRVOUT1 0xc0
33 /* I2C slave 1 registers */
34 #define BCM590XX_GPLDO5PMCTRL1 0x16
35 #define BCM590XX_GPLDO6PMCTRL1 0x18
36 #define BCM590XX_GPLDO1CTRL 0x1a
37 #define BCM590XX_GPLDO2CTRL 0x1b
38 #define BCM590XX_GPLDO3CTRL 0x1c
39 #define BCM590XX_GPLDO4CTRL 0x1d
40 #define BCM590XX_GPLDO5CTRL 0x1e
41 #define BCM590XX_GPLDO6CTRL 0x1f
42 #define BCM590XX_OTG_CTRL 0x40
43 #define BCM590XX_GPLDO1PMCTRL1 0x57
44 #define BCM590XX_GPLDO2PMCTRL1 0x59
45 #define BCM590XX_GPLDO3PMCTRL1 0x5b
46 #define BCM590XX_GPLDO4PMCTRL1 0x5d
48 #define BCM590XX_REG_ENABLE BIT(7)
49 #define BCM590XX_VBUS_ENABLE BIT(2)
50 #define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
51 #define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)
54 * RFLDO to VSR regulators are
55 * accessed via I2C slave 0
58 /* LDO regulator IDs */
59 #define BCM590XX_REG_RFLDO 0
60 #define BCM590XX_REG_CAMLDO1 1
61 #define BCM590XX_REG_CAMLDO2 2
62 #define BCM590XX_REG_SIMLDO1 3
63 #define BCM590XX_REG_SIMLDO2 4
64 #define BCM590XX_REG_SDLDO 5
65 #define BCM590XX_REG_SDXLDO 6
66 #define BCM590XX_REG_MMCLDO1 7
67 #define BCM590XX_REG_MMCLDO2 8
68 #define BCM590XX_REG_AUDLDO 9
69 #define BCM590XX_REG_MICLDO 10
70 #define BCM590XX_REG_USBLDO 11
71 #define BCM590XX_REG_VIBLDO 12
73 /* DCDC regulator IDs */
74 #define BCM590XX_REG_CSR 13
75 #define BCM590XX_REG_IOSR1 14
76 #define BCM590XX_REG_IOSR2 15
77 #define BCM590XX_REG_MSR 16
78 #define BCM590XX_REG_SDSR1 17
79 #define BCM590XX_REG_SDSR2 18
80 #define BCM590XX_REG_VSR 19
83 * GPLDO1 to VBUS regulators are
84 * accessed via I2C slave 1
87 #define BCM590XX_REG_GPLDO1 20
88 #define BCM590XX_REG_GPLDO2 21
89 #define BCM590XX_REG_GPLDO3 22
90 #define BCM590XX_REG_GPLDO4 23
91 #define BCM590XX_REG_GPLDO5 24
92 #define BCM590XX_REG_GPLDO6 25
93 #define BCM590XX_REG_VBUS 26
95 #define BCM590XX_NUM_REGS 27
97 #define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
98 #define BCM590XX_REG_IS_GPLDO(n) \
99 ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
100 #define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS)
102 /* LDO group A: supported voltages in microvolts */
103 static const unsigned int ldo_a_table
[] = {
104 1200000, 1800000, 2500000, 2700000, 2800000,
105 2900000, 3000000, 3300000,
108 /* LDO group C: supported voltages in microvolts */
109 static const unsigned int ldo_c_table
[] = {
110 3100000, 1800000, 2500000, 2700000, 2800000,
111 2900000, 3000000, 3300000,
114 static const unsigned int ldo_vbus
[] = {
118 /* DCDC group CSR: supported voltages in microvolts */
119 static const struct linear_range dcdc_csr_ranges
[] = {
120 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
121 REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
122 REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
125 /* DCDC group IOSR1: supported voltages in microvolts */
126 static const struct linear_range dcdc_iosr1_ranges
[] = {
127 REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
128 REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
129 REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
130 REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
133 /* DCDC group SDSR1: supported voltages in microvolts */
134 static const struct linear_range dcdc_sdsr1_ranges
[] = {
135 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
136 REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
137 REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
140 struct bcm590xx_info
{
142 const char *vin_name
;
144 const unsigned int *volt_table
;
146 const struct linear_range
*linear_ranges
;
149 #define BCM590XX_REG_TABLE(_name, _table) \
152 .n_voltages = ARRAY_SIZE(_table), \
153 .volt_table = _table, \
156 #define BCM590XX_REG_RANGES(_name, _ranges) \
160 .n_linear_ranges = ARRAY_SIZE(_ranges), \
161 .linear_ranges = _ranges, \
164 static struct bcm590xx_info bcm590xx_regs
[] = {
165 BCM590XX_REG_TABLE(rfldo
, ldo_a_table
),
166 BCM590XX_REG_TABLE(camldo1
, ldo_c_table
),
167 BCM590XX_REG_TABLE(camldo2
, ldo_c_table
),
168 BCM590XX_REG_TABLE(simldo1
, ldo_a_table
),
169 BCM590XX_REG_TABLE(simldo2
, ldo_a_table
),
170 BCM590XX_REG_TABLE(sdldo
, ldo_c_table
),
171 BCM590XX_REG_TABLE(sdxldo
, ldo_a_table
),
172 BCM590XX_REG_TABLE(mmcldo1
, ldo_a_table
),
173 BCM590XX_REG_TABLE(mmcldo2
, ldo_a_table
),
174 BCM590XX_REG_TABLE(audldo
, ldo_a_table
),
175 BCM590XX_REG_TABLE(micldo
, ldo_a_table
),
176 BCM590XX_REG_TABLE(usbldo
, ldo_a_table
),
177 BCM590XX_REG_TABLE(vibldo
, ldo_c_table
),
178 BCM590XX_REG_RANGES(csr
, dcdc_csr_ranges
),
179 BCM590XX_REG_RANGES(iosr1
, dcdc_iosr1_ranges
),
180 BCM590XX_REG_RANGES(iosr2
, dcdc_iosr1_ranges
),
181 BCM590XX_REG_RANGES(msr
, dcdc_iosr1_ranges
),
182 BCM590XX_REG_RANGES(sdsr1
, dcdc_sdsr1_ranges
),
183 BCM590XX_REG_RANGES(sdsr2
, dcdc_iosr1_ranges
),
184 BCM590XX_REG_RANGES(vsr
, dcdc_iosr1_ranges
),
185 BCM590XX_REG_TABLE(gpldo1
, ldo_a_table
),
186 BCM590XX_REG_TABLE(gpldo2
, ldo_a_table
),
187 BCM590XX_REG_TABLE(gpldo3
, ldo_a_table
),
188 BCM590XX_REG_TABLE(gpldo4
, ldo_a_table
),
189 BCM590XX_REG_TABLE(gpldo5
, ldo_a_table
),
190 BCM590XX_REG_TABLE(gpldo6
, ldo_a_table
),
191 BCM590XX_REG_TABLE(vbus
, ldo_vbus
),
194 struct bcm590xx_reg
{
195 struct regulator_desc
*desc
;
196 struct bcm590xx
*mfd
;
199 static int bcm590xx_get_vsel_register(int id
)
201 if (BCM590XX_REG_IS_LDO(id
))
202 return BCM590XX_RFLDOCTRL
+ id
;
203 else if (BCM590XX_REG_IS_GPLDO(id
))
204 return BCM590XX_GPLDO1CTRL
+ id
;
206 return BCM590XX_CSRVOUT1
+ (id
- BCM590XX_REG_CSR
) * 3;
209 static int bcm590xx_get_enable_register(int id
)
213 if (BCM590XX_REG_IS_LDO(id
))
214 reg
= BCM590XX_RFLDOPMCTRL1
+ id
* 2;
215 else if (BCM590XX_REG_IS_GPLDO(id
))
216 reg
= BCM590XX_GPLDO1PMCTRL1
+ id
* 2;
219 case BCM590XX_REG_CSR
:
220 reg
= BCM590XX_CSRPMCTRL1
;
222 case BCM590XX_REG_IOSR1
:
223 reg
= BCM590XX_IOSR1PMCTRL1
;
225 case BCM590XX_REG_IOSR2
:
226 reg
= BCM590XX_IOSR2PMCTRL1
;
228 case BCM590XX_REG_MSR
:
229 reg
= BCM590XX_MSRPMCTRL1
;
231 case BCM590XX_REG_SDSR1
:
232 reg
= BCM590XX_SDSR1PMCTRL1
;
234 case BCM590XX_REG_SDSR2
:
235 reg
= BCM590XX_SDSR2PMCTRL1
;
237 case BCM590XX_REG_VSR
:
238 reg
= BCM590XX_VSRPMCTRL1
;
240 case BCM590XX_REG_VBUS
:
241 reg
= BCM590XX_OTG_CTRL
;
249 static const struct regulator_ops bcm590xx_ops_ldo
= {
250 .is_enabled
= regulator_is_enabled_regmap
,
251 .enable
= regulator_enable_regmap
,
252 .disable
= regulator_disable_regmap
,
253 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
254 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
255 .list_voltage
= regulator_list_voltage_table
,
256 .map_voltage
= regulator_map_voltage_iterate
,
259 static const struct regulator_ops bcm590xx_ops_dcdc
= {
260 .is_enabled
= regulator_is_enabled_regmap
,
261 .enable
= regulator_enable_regmap
,
262 .disable
= regulator_disable_regmap
,
263 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
264 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
265 .list_voltage
= regulator_list_voltage_linear_range
,
266 .map_voltage
= regulator_map_voltage_linear_range
,
269 static const struct regulator_ops bcm590xx_ops_vbus
= {
270 .is_enabled
= regulator_is_enabled_regmap
,
271 .enable
= regulator_enable_regmap
,
272 .disable
= regulator_disable_regmap
,
275 static int bcm590xx_probe(struct platform_device
*pdev
)
277 struct bcm590xx
*bcm590xx
= dev_get_drvdata(pdev
->dev
.parent
);
278 struct bcm590xx_reg
*pmu
;
279 struct regulator_config config
= { };
280 struct bcm590xx_info
*info
;
281 struct regulator_dev
*rdev
;
284 pmu
= devm_kzalloc(&pdev
->dev
, sizeof(*pmu
), GFP_KERNEL
);
290 platform_set_drvdata(pdev
, pmu
);
292 pmu
->desc
= devm_kcalloc(&pdev
->dev
,
294 sizeof(struct regulator_desc
),
299 info
= bcm590xx_regs
;
301 for (i
= 0; i
< BCM590XX_NUM_REGS
; i
++, info
++) {
302 /* Register the regulators */
303 pmu
->desc
[i
].name
= info
->name
;
304 pmu
->desc
[i
].of_match
= of_match_ptr(info
->name
);
305 pmu
->desc
[i
].regulators_node
= of_match_ptr("regulators");
306 pmu
->desc
[i
].supply_name
= info
->vin_name
;
308 pmu
->desc
[i
].volt_table
= info
->volt_table
;
309 pmu
->desc
[i
].n_voltages
= info
->n_voltages
;
310 pmu
->desc
[i
].linear_ranges
= info
->linear_ranges
;
311 pmu
->desc
[i
].n_linear_ranges
= info
->n_linear_ranges
;
313 if ((BCM590XX_REG_IS_LDO(i
)) || (BCM590XX_REG_IS_GPLDO(i
))) {
314 pmu
->desc
[i
].ops
= &bcm590xx_ops_ldo
;
315 pmu
->desc
[i
].vsel_mask
= BCM590XX_LDO_VSEL_MASK
;
316 } else if (BCM590XX_REG_IS_VBUS(i
))
317 pmu
->desc
[i
].ops
= &bcm590xx_ops_vbus
;
319 pmu
->desc
[i
].ops
= &bcm590xx_ops_dcdc
;
320 pmu
->desc
[i
].vsel_mask
= BCM590XX_SR_VSEL_MASK
;
323 if (BCM590XX_REG_IS_VBUS(i
))
324 pmu
->desc
[i
].enable_mask
= BCM590XX_VBUS_ENABLE
;
326 pmu
->desc
[i
].vsel_reg
= bcm590xx_get_vsel_register(i
);
327 pmu
->desc
[i
].enable_is_inverted
= true;
328 pmu
->desc
[i
].enable_mask
= BCM590XX_REG_ENABLE
;
330 pmu
->desc
[i
].enable_reg
= bcm590xx_get_enable_register(i
);
331 pmu
->desc
[i
].type
= REGULATOR_VOLTAGE
;
332 pmu
->desc
[i
].owner
= THIS_MODULE
;
334 config
.dev
= bcm590xx
->dev
;
335 config
.driver_data
= pmu
;
336 if (BCM590XX_REG_IS_GPLDO(i
) || BCM590XX_REG_IS_VBUS(i
))
337 config
.regmap
= bcm590xx
->regmap_sec
;
339 config
.regmap
= bcm590xx
->regmap_pri
;
341 rdev
= devm_regulator_register(&pdev
->dev
, &pmu
->desc
[i
],
344 dev_err(bcm590xx
->dev
,
345 "failed to register %s regulator\n",
347 return PTR_ERR(rdev
);
354 static struct platform_driver bcm590xx_regulator_driver
= {
356 .name
= "bcm590xx-vregs",
358 .probe
= bcm590xx_probe
,
360 module_platform_driver(bcm590xx_regulator_driver
);
362 MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
363 MODULE_DESCRIPTION("BCM590xx voltage regulator driver");
364 MODULE_LICENSE("GPL v2");
365 MODULE_ALIAS("platform:bcm590xx-vregs");