Eric Lee / smarc-fsl-linux-kernel

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drivers/regulator/rt5033-regulator.c 3.63 KB
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d925da5c7   Thomas Gleixner   treewide: Replace... 
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  // SPDX-License-Identifier: GPL-2.0-only
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  /*
   * Regulator driver for the Richtek RT5033
   *
   * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
   * Author: Beomho Seo <beomho.seo@samsung.com>
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   */
  
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/regulator/driver.h>
  #include <linux/mfd/rt5033.h>
  #include <linux/mfd/rt5033-private.h>
  #include <linux/regulator/of_regulator.h>
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  static const struct regulator_ops rt5033_safe_ldo_ops = {
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  	.is_enabled		= regulator_is_enabled_regmap,
  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,
  	.list_voltage		= regulator_list_voltage_linear,
  };
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  static const struct regulator_ops rt5033_buck_ops = {
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  	.is_enabled		= regulator_is_enabled_regmap,
  	.enable			= regulator_enable_regmap,
  	.disable		= regulator_disable_regmap,
  	.list_voltage		= regulator_list_voltage_linear,
  	.map_voltage		= regulator_map_voltage_linear,
  	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
  	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
  };
  
  static const struct regulator_desc rt5033_supported_regulators[] = {
  	[RT5033_BUCK] = {
  		.name		= "BUCK",
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  		.of_match	= of_match_ptr("BUCK"),
  		.regulators_node = of_match_ptr("regulators"),
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  		.id		= RT5033_BUCK,
  		.ops		= &rt5033_buck_ops,
  		.type		= REGULATOR_VOLTAGE,
  		.owner		= THIS_MODULE,
  		.n_voltages	= RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM,
  		.min_uV		= RT5033_REGULATOR_BUCK_VOLTAGE_MIN,
  		.uV_step	= RT5033_REGULATOR_BUCK_VOLTAGE_STEP,
  		.enable_reg	= RT5033_REG_CTRL,
  		.enable_mask	= RT5033_CTRL_EN_BUCK_MASK,
  		.vsel_reg	= RT5033_REG_BUCK_CTRL,
  		.vsel_mask	= RT5033_BUCK_CTRL_MASK,
  	},
  	[RT5033_LDO] = {
  		.name		= "LDO",
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  		.of_match	= of_match_ptr("LDO"),
  		.regulators_node = of_match_ptr("regulators"),
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  		.id		= RT5033_LDO,
  		.ops		= &rt5033_buck_ops,
  		.type		= REGULATOR_VOLTAGE,
  		.owner		= THIS_MODULE,
  		.n_voltages	= RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM,
  		.min_uV		= RT5033_REGULATOR_LDO_VOLTAGE_MIN,
  		.uV_step	= RT5033_REGULATOR_LDO_VOLTAGE_STEP,
  		.enable_reg	= RT5033_REG_CTRL,
  		.enable_mask	= RT5033_CTRL_EN_LDO_MASK,
  		.vsel_reg	= RT5033_REG_LDO_CTRL,
  		.vsel_mask	= RT5033_LDO_CTRL_MASK,
  	},
  	[RT5033_SAFE_LDO] = {
  		.name		= "SAFE_LDO",
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  		.of_match	= of_match_ptr("SAFE_LDO"),
  		.regulators_node = of_match_ptr("regulators"),
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  		.id		= RT5033_SAFE_LDO,
  		.ops		= &rt5033_safe_ldo_ops,
  		.type		= REGULATOR_VOLTAGE,
  		.owner		= THIS_MODULE,
  		.n_voltages	= 1,
  		.min_uV		= RT5033_REGULATOR_SAFE_LDO_VOLTAGE,
  		.enable_reg	= RT5033_REG_CTRL,
  		.enable_mask	= RT5033_CTRL_EN_SAFE_LDO_MASK,
  	},
  };
  
  static int rt5033_regulator_probe(struct platform_device *pdev)
  {
  	struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent);
  	int ret, i;
  	struct regulator_config config = {};
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  	config.dev = rt5033->dev;
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  	config.driver_data = rt5033;
  
  	for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) {
  		struct regulator_dev *regulator;
  
  		config.regmap = rt5033->regmap;
  
  		regulator = devm_regulator_register(&pdev->dev,
  				&rt5033_supported_regulators[i], &config);
  		if (IS_ERR(regulator)) {
  			ret = PTR_ERR(regulator);
  			dev_err(&pdev->dev,
  				"Regulator init failed %d: with error: %d
  ",
  				i, ret);
  			return ret;
  		}
  	}
  
  	return 0;
  }
  
  static const struct platform_device_id rt5033_regulator_id[] = {
  	{ "rt5033-regulator", },
  	{ }
  };
  MODULE_DEVICE_TABLE(platform, rt5033_regulator_id);
  
  static struct platform_driver rt5033_regulator_driver = {
  	.driver = {
  		.name = "rt5033-regulator",
  	},
  	.probe		= rt5033_regulator_probe,
  	.id_table	= rt5033_regulator_id,
  };
  module_platform_driver(rt5033_regulator_driver);
  
  MODULE_DESCRIPTION("Richtek RT5033 Regulator driver");
  MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
  MODULE_LICENSE("GPL");