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90 lines
2.5 KiB
90 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// sky81452-regulator.c SKY81452 regulator driver |
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// |
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// Copyright 2014 Skyworks Solutions Inc. |
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// Author : Gyungoh Yoo <[email protected]> |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/platform_device.h> |
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#include <linux/init.h> |
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#include <linux/err.h> |
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#include <linux/of.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/regulator/of_regulator.h> |
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/* registers */ |
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#define SKY81452_REG1 0x01 |
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#define SKY81452_REG3 0x03 |
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/* bit mask */ |
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#define SKY81452_LEN 0x40 |
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#define SKY81452_LOUT 0x1F |
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static const struct regulator_ops sky81452_reg_ops = { |
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.list_voltage = regulator_list_voltage_linear_range, |
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.map_voltage = regulator_map_voltage_linear_range, |
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.get_voltage_sel = regulator_get_voltage_sel_regmap, |
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.set_voltage_sel = regulator_set_voltage_sel_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.is_enabled = regulator_is_enabled_regmap, |
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}; |
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static const struct linear_range sky81452_reg_ranges[] = { |
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REGULATOR_LINEAR_RANGE(4500000, 0, 14, 250000), |
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REGULATOR_LINEAR_RANGE(9000000, 15, 31, 1000000), |
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}; |
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static const struct regulator_desc sky81452_reg = { |
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.name = "LOUT", |
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.of_match = of_match_ptr("lout"), |
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.regulators_node = of_match_ptr("regulator"), |
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.ops = &sky81452_reg_ops, |
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.type = REGULATOR_VOLTAGE, |
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.owner = THIS_MODULE, |
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.n_voltages = SKY81452_LOUT + 1, |
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.linear_ranges = sky81452_reg_ranges, |
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.n_linear_ranges = ARRAY_SIZE(sky81452_reg_ranges), |
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.vsel_reg = SKY81452_REG3, |
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.vsel_mask = SKY81452_LOUT, |
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.enable_reg = SKY81452_REG1, |
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.enable_mask = SKY81452_LEN, |
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}; |
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static int sky81452_reg_probe(struct platform_device *pdev) |
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{ |
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struct device *dev = &pdev->dev; |
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const struct regulator_init_data *init_data = dev_get_platdata(dev); |
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struct regulator_config config = { }; |
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struct regulator_dev *rdev; |
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config.dev = dev->parent; |
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config.init_data = init_data; |
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config.of_node = dev->of_node; |
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config.regmap = dev_get_drvdata(dev->parent); |
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rdev = devm_regulator_register(dev, &sky81452_reg, &config); |
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if (IS_ERR(rdev)) { |
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dev_err(dev, "failed to register. err=%ld\n", PTR_ERR(rdev)); |
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return PTR_ERR(rdev); |
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} |
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platform_set_drvdata(pdev, rdev); |
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return 0; |
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} |
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static struct platform_driver sky81452_reg_driver = { |
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.driver = { |
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.name = "sky81452-regulator", |
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}, |
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.probe = sky81452_reg_probe, |
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}; |
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module_platform_driver(sky81452_reg_driver); |
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MODULE_DESCRIPTION("Skyworks SKY81452 Regulator driver"); |
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MODULE_AUTHOR("Gyungoh Yoo <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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