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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/regulator/88pm8607.c
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@@ -1,17 +1,13 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Regulators driver for Marvell 88PM8607
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  *
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  * Copyright (C) 2009 Marvell International Ltd.
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  *	Haojian Zhuang <haojian.zhuang@marvell.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/kernel.h>
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 #include <linux/init.h>
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 #include <linux/err.h>
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-#include <linux/i2c.h>
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 #include <linux/of.h>
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 #include <linux/regulator/of_regulator.h>
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 #include <linux/platform_device.h>
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@@ -22,12 +18,7 @@
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 struct pm8607_regulator_info {
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 	struct regulator_desc	desc;
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-	struct pm860x_chip	*chip;
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-	struct regulator_dev	*regulator;
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-	struct i2c_client	*i2c;
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-	struct i2c_client	*i2c_8606;
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-	unsigned int	*vol_table;
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 	unsigned int	*vol_suspend;
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 	int	slope_double;
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@@ -210,13 +201,15 @@
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 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
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 {
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 	struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
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-	int ret = -EINVAL;
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+	int ret;
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-	if (info->vol_table && (index < rdev->desc->n_voltages)) {
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-		ret = info->vol_table[index];
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-		if (info->slope_double)
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-			ret <<= 1;
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-	}
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+	ret = regulator_list_voltage_table(rdev, index);
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+	if (ret < 0)
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+		return ret;
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+
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+	if (info->slope_double)
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+		ret <<= 1;
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+
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 	return ret;
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 }
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@@ -239,6 +232,8 @@
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 {									\
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 	.desc	= {							\
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 		.name	= "PREG",					\
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+		.of_match = of_match_ptr("PREG"),			\
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+		.regulators_node = of_match_ptr("regulators"),		\
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 		.ops	= &pm8606_preg_ops,				\
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 		.type	= REGULATOR_CURRENT,				\
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 		.id	= PM8606_ID_PREG,				\
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@@ -253,10 +248,13 @@
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 {									\
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 	.desc	= {							\
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 		.name	= #vreg,					\
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+		.of_match = of_match_ptr(#vreg),			\
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+		.regulators_node = of_match_ptr("regulators"),		\
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 		.ops	= &pm8607_regulator_ops,			\
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 		.type	= REGULATOR_VOLTAGE,				\
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 		.id	= PM8607_ID_##vreg,				\
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 		.owner	= THIS_MODULE,					\
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+		.volt_table = vreg##_table,				\
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 		.n_voltages = ARRAY_SIZE(vreg##_table),			\
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 		.vsel_reg = PM8607_##vreg,				\
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 		.vsel_mask = ARRAY_SIZE(vreg##_table) - 1,		\
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@@ -266,7 +264,6 @@
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 		.enable_mask = 1 << (ebit),				\
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 	},								\
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 	.slope_double	= (0),						\
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-	.vol_table	= (unsigned int *)&vreg##_table,		\
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 	.vol_suspend	= (unsigned int *)&vreg##_suspend_table,	\
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 }
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@@ -274,10 +271,13 @@
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 {									\
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 	.desc	= {							\
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 		.name	= "LDO" #_id,					\
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+		.of_match = of_match_ptr("LDO" #_id),			\
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+		.regulators_node = of_match_ptr("regulators"),		\
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 		.ops	= &pm8607_regulator_ops,			\
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 		.type	= REGULATOR_VOLTAGE,				\
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 		.id	= PM8607_ID_LDO##_id,				\
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 		.owner	= THIS_MODULE,					\
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+		.volt_table = LDO##_id##_table,				\
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 		.n_voltages = ARRAY_SIZE(LDO##_id##_table),		\
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 		.vsel_reg = PM8607_##vreg,				\
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 		.vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
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@@ -285,7 +285,6 @@
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 		.enable_mask = 1 << (ebit),				\
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 	},								\
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 	.slope_double	= (0),						\
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-	.vol_table	= (unsigned int *)&LDO##_id##_table,		\
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 	.vol_suspend	= (unsigned int *)&LDO##_id##_suspend_table,	\
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 }
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@@ -313,42 +312,13 @@
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 	PM8606_PREG(PREREGULATORB, 5),
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 };
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314
 
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-#ifdef CONFIG_OF
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-static int pm8607_regulator_dt_init(struct platform_device *pdev,
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-				    struct pm8607_regulator_info *info,
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-				    struct regulator_config *config)
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-{
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-	struct device_node *nproot, *np;
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-	nproot = pdev->dev.parent->of_node;
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-	if (!nproot)
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-		return -ENODEV;
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-	nproot = of_get_child_by_name(nproot, "regulators");
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-	if (!nproot) {
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-		dev_err(&pdev->dev, "failed to find regulators node\n");
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-		return -ENODEV;
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-	}
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-	for_each_child_of_node(nproot, np) {
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-		if (!of_node_cmp(np->name, info->desc.name)) {
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-			config->init_data =
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-				of_get_regulator_init_data(&pdev->dev, np,
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-							   &info->desc);
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-			config->of_node = np;
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-			break;
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-		}
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-	}
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-	of_node_put(nproot);
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-	return 0;
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-}
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-#else
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-#define pm8607_regulator_dt_init(x, y, z)	(-1)
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-#endif
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-
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 static int pm8607_regulator_probe(struct platform_device *pdev)
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 {
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 	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
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 	struct pm8607_regulator_info *info = NULL;
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 	struct regulator_init_data *pdata = dev_get_platdata(&pdev->dev);
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 	struct regulator_config config = { };
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+	struct regulator_dev *rdev;
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 	struct resource *res;
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 	int i;
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@@ -371,33 +341,27 @@
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 		/* i is used to check regulator ID */
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 		i = -1;
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 	}
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-	info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
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-	info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
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-			chip->client;
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-	info->chip = chip;
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 	/* check DVC ramp slope double */
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-	if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double)
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+	if ((i == PM8607_ID_BUCK3) && chip->buck3_double)
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 		info->slope_double = 1;
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-	config.dev = &pdev->dev;
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+	config.dev = chip->dev;
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 	config.driver_data = info;
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-	if (pm8607_regulator_dt_init(pdev, info, &config))
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-		if (pdata)
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-			config.init_data = pdata;
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+	if (pdata)
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+		config.init_data = pdata;
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 	if (chip->id == CHIP_PM8607)
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 		config.regmap = chip->regmap;
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 	else
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 		config.regmap = chip->regmap_companion;
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-	info->regulator = devm_regulator_register(&pdev->dev, &info->desc,
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-						  &config);
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-	if (IS_ERR(info->regulator)) {
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+	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
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+	if (IS_ERR(rdev)) {
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 		dev_err(&pdev->dev, "failed to register regulator %s\n",
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 			info->desc.name);
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-		return PTR_ERR(info->regulator);
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+		return PTR_ERR(rdev);
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 	}
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 	platform_set_drvdata(pdev, info);