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1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // | |
3 | // sky81452-regulator.c SKY81452 regulator driver | |
4 | // | |
5 | // Copyright 2014 Skyworks Solutions Inc. | |
6 | // Author : Gyungoh Yoo <jack.yoo@skyworksinc.com> | |
9839d627 GY |
7 | |
8 | #include <linux/module.h> | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/platform_device.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/err.h> | |
13 | #include <linux/of.h> | |
14 | #include <linux/regulator/driver.h> | |
15 | #include <linux/regulator/of_regulator.h> | |
16 | ||
17 | /* registers */ | |
18 | #define SKY81452_REG1 0x01 | |
19 | #define SKY81452_REG3 0x03 | |
20 | ||
21 | /* bit mask */ | |
22 | #define SKY81452_LEN 0x40 | |
23 | #define SKY81452_LOUT 0x1F | |
24 | ||
c7e3ddd1 | 25 | static const struct regulator_ops sky81452_reg_ops = { |
9839d627 GY |
26 | .list_voltage = regulator_list_voltage_linear_range, |
27 | .map_voltage = regulator_map_voltage_linear_range, | |
28 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
29 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
30 | .enable = regulator_enable_regmap, | |
31 | .disable = regulator_disable_regmap, | |
32 | .is_enabled = regulator_is_enabled_regmap, | |
33 | }; | |
34 | ||
60ab7f41 | 35 | static const struct linear_range sky81452_reg_ranges[] = { |
9839d627 GY |
36 | REGULATOR_LINEAR_RANGE(4500000, 0, 14, 250000), |
37 | REGULATOR_LINEAR_RANGE(9000000, 15, 31, 1000000), | |
38 | }; | |
39 | ||
40 | static const struct regulator_desc sky81452_reg = { | |
41 | .name = "LOUT", | |
586b1514 GY |
42 | .of_match = of_match_ptr("lout"), |
43 | .regulators_node = of_match_ptr("regulator"), | |
9839d627 GY |
44 | .ops = &sky81452_reg_ops, |
45 | .type = REGULATOR_VOLTAGE, | |
46 | .owner = THIS_MODULE, | |
47 | .n_voltages = SKY81452_LOUT + 1, | |
48 | .linear_ranges = sky81452_reg_ranges, | |
49 | .n_linear_ranges = ARRAY_SIZE(sky81452_reg_ranges), | |
50 | .vsel_reg = SKY81452_REG3, | |
51 | .vsel_mask = SKY81452_LOUT, | |
52 | .enable_reg = SKY81452_REG1, | |
53 | .enable_mask = SKY81452_LEN, | |
54 | }; | |
55 | ||
9839d627 GY |
56 | static int sky81452_reg_probe(struct platform_device *pdev) |
57 | { | |
58 | struct device *dev = &pdev->dev; | |
59 | const struct regulator_init_data *init_data = dev_get_platdata(dev); | |
60 | struct regulator_config config = { }; | |
61 | struct regulator_dev *rdev; | |
62 | ||
586b1514 | 63 | config.dev = dev->parent; |
9839d627 GY |
64 | config.init_data = init_data; |
65 | config.of_node = dev->of_node; | |
66 | config.regmap = dev_get_drvdata(dev->parent); | |
67 | ||
68 | rdev = devm_regulator_register(dev, &sky81452_reg, &config); | |
586b1514 GY |
69 | if (IS_ERR(rdev)) { |
70 | dev_err(dev, "failed to register. err=%ld\n", PTR_ERR(rdev)); | |
9839d627 | 71 | return PTR_ERR(rdev); |
586b1514 | 72 | } |
9839d627 GY |
73 | |
74 | platform_set_drvdata(pdev, rdev); | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | static struct platform_driver sky81452_reg_driver = { | |
80 | .driver = { | |
81 | .name = "sky81452-regulator", | |
82 | }, | |
83 | .probe = sky81452_reg_probe, | |
84 | }; | |
85 | ||
86 | module_platform_driver(sky81452_reg_driver); | |
87 | ||
88 | MODULE_DESCRIPTION("Skyworks SKY81452 Regulator driver"); | |
89 | MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>"); | |
586b1514 | 90 | MODULE_LICENSE("GPL v2"); |