projects / thirdparty / linux.git / blame
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|---|---|---|
| fb9bf5c8 AL |
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"); |