2 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Andrew F. Davis <afd@ti.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether expressed or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details.
15 * Based on the TPS65912 driver
18 #include <linux/module.h>
20 #include <linux/platform_device.h>
21 #include <linux/regulator/driver.h>
23 #include <linux/mfd/tps65086.h>
25 enum tps65086_regulators
{ BUCK1
, BUCK2
, BUCK3
, BUCK4
, BUCK5
, BUCK6
, LDOA1
,
26 LDOA2
, LDOA3
, SWA1
, SWB1
, SWB2
, VTT
};
28 #define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm) \
32 .of_match = of_match_ptr(_of), \
33 .regulators_node = "regulators", \
34 .of_parse_cb = tps65086_of_parse_cb, \
38 .type = REGULATOR_VOLTAGE, \
39 .owner = THIS_MODULE, \
45 .linear_ranges = _lr, \
46 .n_linear_ranges = ARRAY_SIZE(_lr), \
52 #define TPS65086_SWITCH(_name, _of, _id, _er, _em) \
56 .of_match = of_match_ptr(_of), \
57 .regulators_node = "regulators", \
58 .of_parse_cb = tps65086_of_parse_cb, \
61 .type = REGULATOR_VOLTAGE, \
62 .owner = THIS_MODULE, \
68 struct tps65086_regulator
{
69 struct regulator_desc desc
;
70 unsigned int decay_reg
;
71 unsigned int decay_mask
;
74 static const struct regulator_linear_range tps65086_10mv_ranges
[] = {
75 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
76 REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
79 static const struct regulator_linear_range tps65086_buck126_25mv_ranges
[] = {
80 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
81 REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
82 REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
85 static const struct regulator_linear_range tps65086_buck345_25mv_ranges
[] = {
86 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
87 REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
90 static const struct regulator_linear_range tps65086_ldoa1_ranges
[] = {
91 REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
92 REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
93 REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xA, 100000),
94 REGULATOR_LINEAR_RANGE(2700000, 0xB, 0xD, 150000),
95 REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
98 static const struct regulator_linear_range tps65086_ldoa23_ranges
[] = {
99 REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
100 REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
103 /* Operations permitted on regulators */
104 static struct regulator_ops reg_ops
= {
105 .enable
= regulator_enable_regmap
,
106 .disable
= regulator_disable_regmap
,
107 .is_enabled
= regulator_is_enabled_regmap
,
108 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
109 .map_voltage
= regulator_map_voltage_linear_range
,
110 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
111 .list_voltage
= regulator_list_voltage_linear_range
,
114 /* Operations permitted on load switches */
115 static struct regulator_ops switch_ops
= {
116 .enable
= regulator_enable_regmap
,
117 .disable
= regulator_disable_regmap
,
118 .is_enabled
= regulator_is_enabled_regmap
,
121 static int tps65086_of_parse_cb(struct device_node
*dev
,
122 const struct regulator_desc
*desc
,
123 struct regulator_config
*config
);
125 static struct tps65086_regulator regulators
[] = {
126 TPS65086_REGULATOR("BUCK1", "buck1", BUCK1
, 0x80, TPS65086_BUCK1CTRL
,
127 BUCK_VID_MASK
, TPS65086_BUCK123CTRL
, BIT(0),
128 tps65086_10mv_ranges
, TPS65086_BUCK1CTRL
,
130 TPS65086_REGULATOR("BUCK2", "buck2", BUCK2
, 0x80, TPS65086_BUCK2CTRL
,
131 BUCK_VID_MASK
, TPS65086_BUCK123CTRL
, BIT(1),
132 tps65086_10mv_ranges
, TPS65086_BUCK2CTRL
,
134 TPS65086_REGULATOR("BUCK3", "buck3", BUCK3
, 0x80, TPS65086_BUCK3VID
,
135 BUCK_VID_MASK
, TPS65086_BUCK123CTRL
, BIT(2),
136 tps65086_10mv_ranges
, TPS65086_BUCK3DECAY
,
138 TPS65086_REGULATOR("BUCK4", "buck4", BUCK4
, 0x80, TPS65086_BUCK4VID
,
139 BUCK_VID_MASK
, TPS65086_BUCK4CTRL
, BIT(0),
140 tps65086_10mv_ranges
, TPS65086_BUCK4VID
,
142 TPS65086_REGULATOR("BUCK5", "buck5", BUCK5
, 0x80, TPS65086_BUCK5VID
,
143 BUCK_VID_MASK
, TPS65086_BUCK5CTRL
, BIT(0),
144 tps65086_10mv_ranges
, TPS65086_BUCK5CTRL
,
146 TPS65086_REGULATOR("BUCK6", "buck6", BUCK6
, 0x80, TPS65086_BUCK6VID
,
147 BUCK_VID_MASK
, TPS65086_BUCK6CTRL
, BIT(0),
148 tps65086_10mv_ranges
, TPS65086_BUCK6CTRL
,
150 TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1
, 0xF, TPS65086_LDOA1CTRL
,
151 VDOA1_VID_MASK
, TPS65086_LDOA1CTRL
, BIT(0),
152 tps65086_ldoa1_ranges
, 0, 0),
153 TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2
, 0x10, TPS65086_LDOA2VID
,
154 VDOA23_VID_MASK
, TPS65086_LDOA2CTRL
, BIT(0),
155 tps65086_ldoa23_ranges
, 0, 0),
156 TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3
, 0x10, TPS65086_LDOA3VID
,
157 VDOA23_VID_MASK
, TPS65086_LDOA3CTRL
, BIT(0),
158 tps65086_ldoa23_ranges
, 0, 0),
159 TPS65086_SWITCH("SWA1", "swa1", SWA1
, TPS65086_SWVTT_EN
, BIT(5)),
160 TPS65086_SWITCH("SWB1", "swb1", SWB1
, TPS65086_SWVTT_EN
, BIT(6)),
161 TPS65086_SWITCH("SWB2", "swb2", SWB2
, TPS65086_SWVTT_EN
, BIT(7)),
162 TPS65086_SWITCH("VTT", "vtt", VTT
, TPS65086_SWVTT_EN
, BIT(4)),
165 static int tps65086_of_parse_cb(struct device_node
*node
,
166 const struct regulator_desc
*desc
,
167 struct regulator_config
*config
)
171 /* Check for 25mV step mode */
172 if (of_property_read_bool(node
, "ti,regulator-step-size-25mv")) {
177 regulators
[desc
->id
].desc
.linear_ranges
=
178 tps65086_buck126_25mv_ranges
;
179 regulators
[desc
->id
].desc
.n_linear_ranges
=
180 ARRAY_SIZE(tps65086_buck126_25mv_ranges
);
185 regulators
[desc
->id
].desc
.linear_ranges
=
186 tps65086_buck345_25mv_ranges
;
187 regulators
[desc
->id
].desc
.n_linear_ranges
=
188 ARRAY_SIZE(tps65086_buck345_25mv_ranges
);
191 dev_warn(config
->dev
, "25mV step mode only valid for BUCK regulators\n");
195 /* Check for decay mode */
196 if (desc
->id
<= BUCK6
&& of_property_read_bool(node
, "ti,regulator-decay")) {
197 ret
= regmap_write_bits(config
->regmap
,
198 regulators
[desc
->id
].decay_reg
,
199 regulators
[desc
->id
].decay_mask
,
200 regulators
[desc
->id
].decay_mask
);
202 dev_err(config
->dev
, "Error setting decay\n");
210 static int tps65086_regulator_probe(struct platform_device
*pdev
)
212 struct tps65086
*tps
= dev_get_drvdata(pdev
->dev
.parent
);
213 struct regulator_config config
= { };
214 struct regulator_dev
*rdev
;
217 platform_set_drvdata(pdev
, tps
);
219 config
.dev
= &pdev
->dev
;
220 config
.dev
->of_node
= tps
->dev
->of_node
;
221 config
.driver_data
= tps
;
222 config
.regmap
= tps
->regmap
;
224 for (i
= 0; i
< ARRAY_SIZE(regulators
); i
++) {
225 rdev
= devm_regulator_register(&pdev
->dev
, ®ulators
[i
].desc
,
228 dev_err(tps
->dev
, "failed to register %s regulator\n",
230 return PTR_ERR(rdev
);
237 static const struct platform_device_id tps65086_regulator_id_table
[] = {
238 { "tps65086-regulator", },
241 MODULE_DEVICE_TABLE(platform
, tps65086_regulator_id_table
);
243 static struct platform_driver tps65086_regulator_driver
= {
245 .name
= "tps65086-regulator",
247 .probe
= tps65086_regulator_probe
,
248 .id_table
= tps65086_regulator_id_table
,
250 module_platform_driver(tps65086_regulator_driver
);
252 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
253 MODULE_DESCRIPTION("TPS65086 Regulator driver");
254 MODULE_LICENSE("GPL v2");