Commit 222d0f04 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Mark Brown
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regulator: max77693: Let core parse DT and drop board files support 



Simplify the driver by removing board file support and letting
regulator core to parse DT.

The max77693 regulator driver is used only on Exynos based boards which
are DT-only. Board files for Exynos are not supported.

Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c517d838

drivers/regulator/max77693.c

+9 −84
Original line number Diff line number Diff line
@@ -128,6 +128,8 @@ static struct regulator_ops max77693_charger_ops = { 
#define regulator_desc_esafeout(_num)	{			\

	.name		= "ESAFEOUT"#_num,			\

	.id		= MAX77693_ESAFEOUT##_num,		\

	.of_match	= of_match_ptr("ESAFEOUT"#_num),	\

	.regulators_node	= of_match_ptr("regulators"),	\

	.n_voltages	= 4,					\

	.ops		= &max77693_safeout_ops,		\

	.type		= REGULATOR_VOLTAGE,			\
@@ -145,6 +147,8 @@ static const struct regulator_desc regulators[] = { 
	{

		.name = "CHARGER",

		.id = MAX77693_CHARGER,

		.of_match = of_match_ptr("CHARGER"),

		.regulators_node = of_match_ptr("regulators"),

		.ops = &max77693_charger_ops,

		.type = REGULATOR_CURRENT,

		.owner = THIS_MODULE,
@@ -154,102 +158,23 @@ static const struct regulator_desc regulators[] = { 
	},

};



#ifdef CONFIG_OF

static int max77693_pmic_dt_parse_rdata(struct device *dev,

					struct max77693_regulator_data **rdata)

{

	struct device_node *np;

	struct of_regulator_match *rmatch;

	struct max77693_regulator_data *tmp;

	int i, matched = 0;



	np = of_get_child_by_name(dev->parent->of_node, "regulators");

	if (!np)

		return -EINVAL;



	rmatch = devm_kzalloc(dev,

		 sizeof(*rmatch) * ARRAY_SIZE(regulators), GFP_KERNEL);

	if (!rmatch) {

		of_node_put(np);

		return -ENOMEM;

	}



	for (i = 0; i < ARRAY_SIZE(regulators); i++)

		rmatch[i].name = regulators[i].name;



	matched = of_regulator_match(dev, np, rmatch, ARRAY_SIZE(regulators));

	of_node_put(np);

	if (matched <= 0)

		return matched;

	*rdata = devm_kzalloc(dev, sizeof(**rdata) * matched, GFP_KERNEL);

	if (!(*rdata))

		return -ENOMEM;



	tmp = *rdata;



	for (i = 0; i < matched; i++) {

		tmp->initdata = rmatch[i].init_data;

		tmp->of_node = rmatch[i].of_node;

		tmp->id = regulators[i].id;

		tmp++;

	}



	return matched;

}

#else

static int max77693_pmic_dt_parse_rdata(struct device *dev,

					struct max77693_regulator_data **rdata)

{

	return 0;

}

#endif /* CONFIG_OF */



static int max77693_pmic_init_rdata(struct device *dev,

				    struct max77693_regulator_data **rdata)

{

	struct max77693_platform_data *pdata;

	int num_regulators = 0;



	pdata = dev_get_platdata(dev->parent);

	if (pdata) {

		*rdata = pdata->regulators;

		num_regulators = pdata->num_regulators;

	}



	if (!(*rdata) && dev->parent->of_node)

		num_regulators = max77693_pmic_dt_parse_rdata(dev, rdata);



	return num_regulators;

}



static int max77693_pmic_probe(struct platform_device *pdev)

{

	struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);

	struct max77693_regulator_data *rdata = NULL;

	int num_rdata, i;

	int i;

	struct regulator_config config = { };



	num_rdata = max77693_pmic_init_rdata(&pdev->dev, &rdata);

	if (!rdata || num_rdata <= 0) {

		dev_err(&pdev->dev, "No init data supplied.\n");

		return -ENODEV;

	}



	config.dev = &pdev->dev;

	config.dev = iodev->dev;

	config.regmap = iodev->regmap;



	for (i = 0; i < num_rdata; i++) {

		int id = rdata[i].id;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {

		struct regulator_dev *rdev;



		config.init_data = rdata[i].initdata;

		config.of_node = rdata[i].of_node;



		rdev = devm_regulator_register(&pdev->dev,

						&regulators[id], &config);

						&regulators[i], &config);

		if (IS_ERR(rdev)) {

			dev_err(&pdev->dev,

				"Failed to initialize regulator-%d\n", id);

				"Failed to initialize regulator-%d\n", i);

			return PTR_ERR(rdev);

		}

	}