Loading...
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Driver for TPS61050/61052 boost converters, typically used for white LEDs
4 * or audio amplifiers.
5 *
6 * Copyright (C) 2011 ST-Ericsson SA
7 * Written on behalf of Linaro for ST-Ericsson
8 *
9 * Author: Linus Walleij <linus.walleij@linaro.org>
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/err.h>
16#include <linux/regmap.h>
17#include <linux/platform_device.h>
18#include <linux/regulator/driver.h>
19#include <linux/mfd/core.h>
20#include <linux/mfd/tps6105x.h>
21
22static const unsigned int tps6105x_voltages[] = {
23 4500000,
24 5000000,
25 5250000,
26 5000000, /* There is an additional 5V */
27};
28
29static struct regulator_ops tps6105x_regulator_ops = {
30 .enable = regulator_enable_regmap,
31 .disable = regulator_disable_regmap,
32 .is_enabled = regulator_is_enabled_regmap,
33 .get_voltage_sel = regulator_get_voltage_sel_regmap,
34 .set_voltage_sel = regulator_set_voltage_sel_regmap,
35 .list_voltage = regulator_list_voltage_table,
36};
37
38static const struct regulator_desc tps6105x_regulator_desc = {
39 .name = "tps6105x-boost",
40 .of_match = of_match_ptr("regulator"),
41 .ops = &tps6105x_regulator_ops,
42 .type = REGULATOR_VOLTAGE,
43 .id = 0,
44 .owner = THIS_MODULE,
45 .n_voltages = ARRAY_SIZE(tps6105x_voltages),
46 .volt_table = tps6105x_voltages,
47 .vsel_reg = TPS6105X_REG_0,
48 .vsel_mask = TPS6105X_REG0_VOLTAGE_MASK,
49 .enable_reg = TPS6105X_REG_0,
50 .enable_mask = TPS6105X_REG0_MODE_MASK,
51 .enable_val = TPS6105X_REG0_MODE_VOLTAGE <<
52 TPS6105X_REG0_MODE_SHIFT,
53};
54
55/*
56 * Registers the chip as a voltage regulator
57 */
58static int tps6105x_regulator_probe(struct platform_device *pdev)
59{
60 struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev);
61 struct tps6105x_platform_data *pdata = tps6105x->pdata;
62 struct regulator_config config = { };
63 int ret;
64
65 /* This instance is not set for regulator mode so bail out */
66 if (pdata->mode != TPS6105X_MODE_VOLTAGE) {
67 dev_info(&pdev->dev,
68 "chip not in voltage mode mode, exit probe\n");
69 return 0;
70 }
71
72 config.dev = &tps6105x->client->dev;
73 config.init_data = pdata->regulator_data;
74 config.driver_data = tps6105x;
75 config.of_node = pdev->dev.parent->of_node;
76 config.regmap = tps6105x->regmap;
77
78 /* Register regulator with framework */
79 tps6105x->regulator = devm_regulator_register(&pdev->dev,
80 &tps6105x_regulator_desc,
81 &config);
82 if (IS_ERR(tps6105x->regulator)) {
83 ret = PTR_ERR(tps6105x->regulator);
84 dev_err(&tps6105x->client->dev,
85 "failed to register regulator\n");
86 return ret;
87 }
88 platform_set_drvdata(pdev, tps6105x);
89
90 return 0;
91}
92
93static struct platform_driver tps6105x_regulator_driver = {
94 .driver = {
95 .name = "tps6105x-regulator",
96 },
97 .probe = tps6105x_regulator_probe,
98};
99
100static __init int tps6105x_regulator_init(void)
101{
102 return platform_driver_register(&tps6105x_regulator_driver);
103}
104subsys_initcall(tps6105x_regulator_init);
105
106static __exit void tps6105x_regulator_exit(void)
107{
108 platform_driver_unregister(&tps6105x_regulator_driver);
109}
110module_exit(tps6105x_regulator_exit);
111
112MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
113MODULE_DESCRIPTION("TPS6105x regulator driver");
114MODULE_LICENSE("GPL v2");
115MODULE_ALIAS("platform:tps6105x-regulator");
1/*
2 * Driver for TPS61050/61052 boost converters, typically used for white LEDs
3 * or audio amplifiers.
4 *
5 * Copyright (C) 2011 ST-Ericsson SA
6 * Written on behalf of Linaro for ST-Ericsson
7 *
8 * Author: Linus Walleij <linus.walleij@linaro.org>
9 *
10 * License terms: GNU General Public License (GPL) version 2
11 */
12
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/err.h>
17#include <linux/i2c.h>
18#include <linux/platform_device.h>
19#include <linux/regulator/driver.h>
20#include <linux/mfd/core.h>
21#include <linux/mfd/tps6105x.h>
22
23static const int tps6105x_voltages[] = {
24 4500000,
25 5000000,
26 5250000,
27 5000000, /* There is an additional 5V */
28};
29
30static int tps6105x_regulator_enable(struct regulator_dev *rdev)
31{
32 struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
33 int ret;
34
35 /* Activate voltage mode */
36 ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0,
37 TPS6105X_REG0_MODE_MASK,
38 TPS6105X_REG0_MODE_VOLTAGE << TPS6105X_REG0_MODE_SHIFT);
39 if (ret)
40 return ret;
41
42 return 0;
43}
44
45static int tps6105x_regulator_disable(struct regulator_dev *rdev)
46{
47 struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
48 int ret;
49
50 /* Set into shutdown mode */
51 ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0,
52 TPS6105X_REG0_MODE_MASK,
53 TPS6105X_REG0_MODE_SHUTDOWN << TPS6105X_REG0_MODE_SHIFT);
54 if (ret)
55 return ret;
56
57 return 0;
58}
59
60static int tps6105x_regulator_is_enabled(struct regulator_dev *rdev)
61{
62 struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
63 u8 regval;
64 int ret;
65
66 ret = tps6105x_get(tps6105x, TPS6105X_REG_0, ®val);
67 if (ret)
68 return ret;
69 regval &= TPS6105X_REG0_MODE_MASK;
70 regval >>= TPS6105X_REG0_MODE_SHIFT;
71
72 if (regval == TPS6105X_REG0_MODE_VOLTAGE)
73 return 1;
74
75 return 0;
76}
77
78static int tps6105x_regulator_get_voltage_sel(struct regulator_dev *rdev)
79{
80 struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
81 u8 regval;
82 int ret;
83
84 ret = tps6105x_get(tps6105x, TPS6105X_REG_0, ®val);
85 if (ret)
86 return ret;
87
88 regval &= TPS6105X_REG0_VOLTAGE_MASK;
89 regval >>= TPS6105X_REG0_VOLTAGE_SHIFT;
90 return (int) regval;
91}
92
93static int tps6105x_regulator_set_voltage_sel(struct regulator_dev *rdev,
94 unsigned selector)
95{
96 struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
97 int ret;
98
99 ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0,
100 TPS6105X_REG0_VOLTAGE_MASK,
101 selector << TPS6105X_REG0_VOLTAGE_SHIFT);
102 if (ret)
103 return ret;
104
105 return 0;
106}
107
108static int tps6105x_regulator_list_voltage(struct regulator_dev *rdev,
109 unsigned selector)
110{
111 if (selector >= ARRAY_SIZE(tps6105x_voltages))
112 return -EINVAL;
113
114 return tps6105x_voltages[selector];
115}
116
117static struct regulator_ops tps6105x_regulator_ops = {
118 .enable = tps6105x_regulator_enable,
119 .disable = tps6105x_regulator_disable,
120 .is_enabled = tps6105x_regulator_is_enabled,
121 .get_voltage_sel = tps6105x_regulator_get_voltage_sel,
122 .set_voltage_sel = tps6105x_regulator_set_voltage_sel,
123 .list_voltage = tps6105x_regulator_list_voltage,
124};
125
126static const struct regulator_desc tps6105x_regulator_desc = {
127 .name = "tps6105x-boost",
128 .ops = &tps6105x_regulator_ops,
129 .type = REGULATOR_VOLTAGE,
130 .id = 0,
131 .owner = THIS_MODULE,
132 .n_voltages = ARRAY_SIZE(tps6105x_voltages),
133};
134
135/*
136 * Registers the chip as a voltage regulator
137 */
138static int __devinit tps6105x_regulator_probe(struct platform_device *pdev)
139{
140 struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev);
141 struct tps6105x_platform_data *pdata = tps6105x->pdata;
142 struct regulator_config config = { };
143 int ret;
144
145 /* This instance is not set for regulator mode so bail out */
146 if (pdata->mode != TPS6105X_MODE_VOLTAGE) {
147 dev_info(&pdev->dev,
148 "chip not in voltage mode mode, exit probe \n");
149 return 0;
150 }
151
152 config.dev = &tps6105x->client->dev;
153 config.init_data = pdata->regulator_data;
154 config.driver_data = tps6105x;
155
156 /* Register regulator with framework */
157 tps6105x->regulator = regulator_register(&tps6105x_regulator_desc,
158 &config);
159 if (IS_ERR(tps6105x->regulator)) {
160 ret = PTR_ERR(tps6105x->regulator);
161 dev_err(&tps6105x->client->dev,
162 "failed to register regulator\n");
163 return ret;
164 }
165 platform_set_drvdata(pdev, tps6105x);
166
167 return 0;
168}
169
170static int __devexit tps6105x_regulator_remove(struct platform_device *pdev)
171{
172 struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev);
173 regulator_unregister(tps6105x->regulator);
174 return 0;
175}
176
177static struct platform_driver tps6105x_regulator_driver = {
178 .driver = {
179 .name = "tps6105x-regulator",
180 .owner = THIS_MODULE,
181 },
182 .probe = tps6105x_regulator_probe,
183 .remove = __devexit_p(tps6105x_regulator_remove),
184};
185
186static __init int tps6105x_regulator_init(void)
187{
188 return platform_driver_register(&tps6105x_regulator_driver);
189}
190subsys_initcall(tps6105x_regulator_init);
191
192static __exit void tps6105x_regulator_exit(void)
193{
194 platform_driver_unregister(&tps6105x_regulator_driver);
195}
196module_exit(tps6105x_regulator_exit);
197
198MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
199MODULE_DESCRIPTION("TPS6105x regulator driver");
200MODULE_LICENSE("GPL v2");
201MODULE_ALIAS("platform:tps6105x-regulator");