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1// SPDX-License-Identifier: GPL-2.02//3// sky81452-regulator.c	SKY81452 regulator driver4//5// Copyright 2014 Skyworks Solutions Inc.6// Author : Gyungoh Yoo <jack.yoo@skyworksinc.com>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	0x0119#define SKY81452_REG3	0x0320 21/* bit mask */22#define SKY81452_LEN	0x4023#define SKY81452_LOUT	0x1F24 25static const struct regulator_ops sky81452_reg_ops = {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 35static const struct linear_range sky81452_reg_ranges[] = {36	REGULATOR_LINEAR_RANGE(4500000, 0, 14, 250000),37	REGULATOR_LINEAR_RANGE(9000000, 15, 31, 1000000),38};39 40static const struct regulator_desc sky81452_reg = {41	.name = "LOUT",42	.of_match = of_match_ptr("lout"),43	.regulators_node = of_match_ptr("regulator"),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 56static 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 63	config.dev = dev->parent;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);69	if (IS_ERR(rdev)) {70		dev_err(dev, "failed to register. err=%ld\n", PTR_ERR(rdev));71		return PTR_ERR(rdev);72	}73 74	platform_set_drvdata(pdev, rdev);75 76	return 0;77}78 79static struct platform_driver sky81452_reg_driver = {80	.driver = {81		.name = "sky81452-regulator",82		.probe_type = PROBE_PREFER_ASYNCHRONOUS,83	},84	.probe = sky81452_reg_probe,85};86 87module_platform_driver(sky81452_reg_driver);88 89MODULE_DESCRIPTION("Skyworks SKY81452 Regulator driver");90MODULE_AUTHOR("Gyungoh Yoo <jack.yoo@skyworksinc.com>");91MODULE_LICENSE("GPL v2");92