1e6dea51eSChristoph Fritz // SPDX-License-Identifier: GPL-2.0+
2e6dea51eSChristoph Fritz #include <linux/module.h>
3e6dea51eSChristoph Fritz #include <linux/i2c.h>
4e6dea51eSChristoph Fritz #include <linux/regmap.h>
5e6dea51eSChristoph Fritz #include <linux/regulator/driver.h>
6e6dea51eSChristoph Fritz
7e6dea51eSChristoph Fritz enum fan53880_regulator_ids {
8e6dea51eSChristoph Fritz FAN53880_LDO1,
9e6dea51eSChristoph Fritz FAN53880_LDO2,
10e6dea51eSChristoph Fritz FAN53880_LDO3,
11e6dea51eSChristoph Fritz FAN53880_LDO4,
12e6dea51eSChristoph Fritz FAN53880_BUCK,
13e6dea51eSChristoph Fritz FAN53880_BOOST,
14e6dea51eSChristoph Fritz };
15e6dea51eSChristoph Fritz
16e6dea51eSChristoph Fritz enum fan53880_registers {
17e6dea51eSChristoph Fritz FAN53880_PRODUCT_ID = 0x00,
18e6dea51eSChristoph Fritz FAN53880_SILICON_REV,
19e6dea51eSChristoph Fritz FAN53880_BUCKVOUT,
20e6dea51eSChristoph Fritz FAN53880_BOOSTVOUT,
21e6dea51eSChristoph Fritz FAN53880_LDO1VOUT,
22e6dea51eSChristoph Fritz FAN53880_LDO2VOUT,
23e6dea51eSChristoph Fritz FAN53880_LDO3VOUT,
24e6dea51eSChristoph Fritz FAN53880_LDO4VOUT,
25e6dea51eSChristoph Fritz FAN53880_IOUT,
26e6dea51eSChristoph Fritz FAN53880_ENABLE,
27e6dea51eSChristoph Fritz FAN53880_ENABLE_BOOST,
28e6dea51eSChristoph Fritz };
29e6dea51eSChristoph Fritz
30e6dea51eSChristoph Fritz #define FAN53880_ID 0x01
31e6dea51eSChristoph Fritz
32e6dea51eSChristoph Fritz static const struct regulator_ops fan53880_ops = {
33e6dea51eSChristoph Fritz .list_voltage = regulator_list_voltage_linear_range,
34e6dea51eSChristoph Fritz .map_voltage = regulator_map_voltage_linear_range,
35e6dea51eSChristoph Fritz .set_voltage_sel = regulator_set_voltage_sel_regmap,
36e6dea51eSChristoph Fritz .get_voltage_sel = regulator_get_voltage_sel_regmap,
37e6dea51eSChristoph Fritz .enable = regulator_enable_regmap,
38e6dea51eSChristoph Fritz .disable = regulator_disable_regmap,
39e6dea51eSChristoph Fritz .is_enabled = regulator_is_enabled_regmap,
40e6dea51eSChristoph Fritz };
41e6dea51eSChristoph Fritz
42e6dea51eSChristoph Fritz #define FAN53880_LDO(_num, _supply, _default) \
43e6dea51eSChristoph Fritz [FAN53880_LDO ## _num] = { \
44e6dea51eSChristoph Fritz .name = "LDO"#_num, \
45c4b02c92SJean Delvare .of_match = "LDO"#_num, \
46c4b02c92SJean Delvare .regulators_node = "regulators", \
47e6dea51eSChristoph Fritz .type = REGULATOR_VOLTAGE, \
486c814b67SAxel Lin .owner = THIS_MODULE, \
49e6dea51eSChristoph Fritz .linear_ranges = (struct linear_range[]) { \
50e6dea51eSChristoph Fritz REGULATOR_LINEAR_RANGE(_default, 0x0, 0x0, 0), \
51e6dea51eSChristoph Fritz REGULATOR_LINEAR_RANGE(800000, 0xf, 0x73, 25000), \
52e6dea51eSChristoph Fritz }, \
53e6dea51eSChristoph Fritz .n_linear_ranges = 2, \
5434991ee9SAxel Lin .n_voltages = 0x74, \
55e6dea51eSChristoph Fritz .vsel_reg = FAN53880_LDO ## _num ## VOUT, \
56e6dea51eSChristoph Fritz .vsel_mask = 0x7f, \
57e6dea51eSChristoph Fritz .enable_reg = FAN53880_ENABLE, \
58e6dea51eSChristoph Fritz .enable_mask = BIT(_num - 1), \
59e6dea51eSChristoph Fritz .enable_time = 150, \
60e6dea51eSChristoph Fritz .supply_name = _supply, \
61e6dea51eSChristoph Fritz .ops = &fan53880_ops, \
62e6dea51eSChristoph Fritz }
63e6dea51eSChristoph Fritz
64e6dea51eSChristoph Fritz static const struct regulator_desc fan53880_regulators[] = {
65e6dea51eSChristoph Fritz FAN53880_LDO(1, "VIN12", 2800000),
66e6dea51eSChristoph Fritz FAN53880_LDO(2, "VIN12", 2800000),
67e6dea51eSChristoph Fritz FAN53880_LDO(3, "VIN3", 1800000),
68e6dea51eSChristoph Fritz FAN53880_LDO(4, "VIN4", 1800000),
69e6dea51eSChristoph Fritz [FAN53880_BUCK] = {
70e6dea51eSChristoph Fritz .name = "BUCK",
71c4b02c92SJean Delvare .of_match = "BUCK",
72c4b02c92SJean Delvare .regulators_node = "regulators",
73e6dea51eSChristoph Fritz .type = REGULATOR_VOLTAGE,
746c814b67SAxel Lin .owner = THIS_MODULE,
75e6dea51eSChristoph Fritz .linear_ranges = (struct linear_range[]) {
76e6dea51eSChristoph Fritz REGULATOR_LINEAR_RANGE(1100000, 0x0, 0x0, 0),
77e6dea51eSChristoph Fritz REGULATOR_LINEAR_RANGE(600000, 0x1f, 0xf7, 12500),
78e6dea51eSChristoph Fritz },
79e6dea51eSChristoph Fritz .n_linear_ranges = 2,
8034991ee9SAxel Lin .n_voltages = 0xf8,
81e6dea51eSChristoph Fritz .vsel_reg = FAN53880_BUCKVOUT,
822e11737aSAxel Lin .vsel_mask = 0xff,
83e6dea51eSChristoph Fritz .enable_reg = FAN53880_ENABLE,
84e6dea51eSChristoph Fritz .enable_mask = 0x10,
85e6dea51eSChristoph Fritz .enable_time = 480,
86e6dea51eSChristoph Fritz .supply_name = "PVIN",
87e6dea51eSChristoph Fritz .ops = &fan53880_ops,
88e6dea51eSChristoph Fritz },
89e6dea51eSChristoph Fritz [FAN53880_BOOST] = {
90e6dea51eSChristoph Fritz .name = "BOOST",
91c4b02c92SJean Delvare .of_match = "BOOST",
92c4b02c92SJean Delvare .regulators_node = "regulators",
93e6dea51eSChristoph Fritz .type = REGULATOR_VOLTAGE,
946c814b67SAxel Lin .owner = THIS_MODULE,
95e6dea51eSChristoph Fritz .linear_ranges = (struct linear_range[]) {
96e6dea51eSChristoph Fritz REGULATOR_LINEAR_RANGE(5000000, 0x0, 0x0, 0),
97e6dea51eSChristoph Fritz REGULATOR_LINEAR_RANGE(3000000, 0x4, 0x70, 25000),
98e6dea51eSChristoph Fritz },
99e6dea51eSChristoph Fritz .n_linear_ranges = 2,
10034991ee9SAxel Lin .n_voltages = 0x71,
101e6dea51eSChristoph Fritz .vsel_reg = FAN53880_BOOSTVOUT,
102e6dea51eSChristoph Fritz .vsel_mask = 0x7f,
103e6dea51eSChristoph Fritz .enable_reg = FAN53880_ENABLE_BOOST,
104e6dea51eSChristoph Fritz .enable_mask = 0xff,
105e6dea51eSChristoph Fritz .enable_time = 580,
106e6dea51eSChristoph Fritz .supply_name = "PVIN",
107e6dea51eSChristoph Fritz .ops = &fan53880_ops,
108e6dea51eSChristoph Fritz },
109e6dea51eSChristoph Fritz };
110e6dea51eSChristoph Fritz
111e6dea51eSChristoph Fritz static const struct regmap_config fan53880_regmap = {
112e6dea51eSChristoph Fritz .reg_bits = 8,
113e6dea51eSChristoph Fritz .val_bits = 8,
114e6dea51eSChristoph Fritz .max_register = FAN53880_ENABLE_BOOST,
115e6dea51eSChristoph Fritz };
116e6dea51eSChristoph Fritz
fan53880_i2c_probe(struct i2c_client * i2c)1177075359cSAxel Lin static int fan53880_i2c_probe(struct i2c_client *i2c)
118e6dea51eSChristoph Fritz {
119e6dea51eSChristoph Fritz struct regulator_config config = { };
120e6dea51eSChristoph Fritz struct regulator_dev *rdev;
121e6dea51eSChristoph Fritz struct regmap *regmap;
122e6dea51eSChristoph Fritz int i, ret;
123e6dea51eSChristoph Fritz unsigned int data;
124e6dea51eSChristoph Fritz
125e6dea51eSChristoph Fritz regmap = devm_regmap_init_i2c(i2c, &fan53880_regmap);
126e6dea51eSChristoph Fritz if (IS_ERR(regmap)) {
127e6dea51eSChristoph Fritz ret = PTR_ERR(regmap);
128e6dea51eSChristoph Fritz dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
129e6dea51eSChristoph Fritz return ret;
130e6dea51eSChristoph Fritz }
131e6dea51eSChristoph Fritz
132e6dea51eSChristoph Fritz ret = regmap_read(regmap, FAN53880_PRODUCT_ID, &data);
133e6dea51eSChristoph Fritz if (ret < 0) {
134e6dea51eSChristoph Fritz dev_err(&i2c->dev, "Failed to read PRODUCT_ID: %d\n", ret);
135e6dea51eSChristoph Fritz return ret;
136e6dea51eSChristoph Fritz }
137e6dea51eSChristoph Fritz if (data != FAN53880_ID) {
138e6dea51eSChristoph Fritz dev_err(&i2c->dev, "Unsupported device id: 0x%x.\n", data);
139e6dea51eSChristoph Fritz return -ENODEV;
140e6dea51eSChristoph Fritz }
141e6dea51eSChristoph Fritz
142e6dea51eSChristoph Fritz config.dev = &i2c->dev;
143e6dea51eSChristoph Fritz config.init_data = NULL;
144e6dea51eSChristoph Fritz
145e6dea51eSChristoph Fritz for (i = 0; i < ARRAY_SIZE(fan53880_regulators); i++) {
146e6dea51eSChristoph Fritz rdev = devm_regulator_register(&i2c->dev,
147e6dea51eSChristoph Fritz &fan53880_regulators[i],
148e6dea51eSChristoph Fritz &config);
149e6dea51eSChristoph Fritz if (IS_ERR(rdev)) {
150e6dea51eSChristoph Fritz ret = PTR_ERR(rdev);
151e6dea51eSChristoph Fritz dev_err(&i2c->dev, "Failed to register %s: %d\n",
152e6dea51eSChristoph Fritz fan53880_regulators[i].name, ret);
153e6dea51eSChristoph Fritz return ret;
154e6dea51eSChristoph Fritz }
155e6dea51eSChristoph Fritz }
156e6dea51eSChristoph Fritz
157e6dea51eSChristoph Fritz return 0;
158e6dea51eSChristoph Fritz }
159e6dea51eSChristoph Fritz
160e6dea51eSChristoph Fritz static const struct of_device_id fan53880_dt_ids[] = {
161e6dea51eSChristoph Fritz { .compatible = "onnn,fan53880", },
162e6dea51eSChristoph Fritz {}
163e6dea51eSChristoph Fritz };
164e6dea51eSChristoph Fritz MODULE_DEVICE_TABLE(of, fan53880_dt_ids);
165e6dea51eSChristoph Fritz
166e6dea51eSChristoph Fritz static const struct i2c_device_id fan53880_i2c_id[] = {
167e6dea51eSChristoph Fritz { "fan53880", },
168e6dea51eSChristoph Fritz {}
169e6dea51eSChristoph Fritz };
170e6dea51eSChristoph Fritz MODULE_DEVICE_TABLE(i2c, fan53880_i2c_id);
171e6dea51eSChristoph Fritz
172e6dea51eSChristoph Fritz static struct i2c_driver fan53880_regulator_driver = {
173e6dea51eSChristoph Fritz .driver = {
174e6dea51eSChristoph Fritz .name = "fan53880",
17567dc71c6SDouglas Anderson .probe_type = PROBE_PREFER_ASYNCHRONOUS,
176c4b02c92SJean Delvare .of_match_table = fan53880_dt_ids,
177e6dea51eSChristoph Fritz },
178*964e1865SUwe Kleine-König .probe = fan53880_i2c_probe,
179e6dea51eSChristoph Fritz .id_table = fan53880_i2c_id,
180e6dea51eSChristoph Fritz };
181e6dea51eSChristoph Fritz module_i2c_driver(fan53880_regulator_driver);
182e6dea51eSChristoph Fritz
183e6dea51eSChristoph Fritz MODULE_DESCRIPTION("FAN53880 PMIC voltage regulator driver");
184e6dea51eSChristoph Fritz MODULE_AUTHOR("Christoph Fritz <chf.fritz@googlemail.com>");
185e6dea51eSChristoph Fritz MODULE_LICENSE("GPL");
186