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Commit 91f23d8f authored by Heiko Stuebner's avatar Heiko Stuebner Committed by Mark Brown
Browse files

regulator: fan53555: add devicetree support 



Add the ability to parse regulator-data from the devicetree.

Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ed801b40

drivers/regulator/fan53555.c

+46 −4
Original line number Diff line number Diff line
@@ -18,6 +18,8 @@ 
#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/of_regulator.h>

#include <linux/of_device.h>

#include <linux/i2c.h>

#include <linux/slab.h>

#include <linux/regmap.h>
@@ -252,9 +254,39 @@ static struct regmap_config fan53555_regmap_config = { 
	.val_bits = 8,

};



static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev,

							struct device_node *np)

{

	struct fan53555_platform_data *pdata;

	int ret;

	u32 tmp;



	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);

	if (!pdata)

		return NULL;



	pdata->regulator = of_get_regulator_init_data(dev, np);



	ret = of_property_read_u32(np, "fcs,suspend-voltage-selector",

				   &tmp);

	if (!ret)

		pdata->sleep_vsel_id = tmp;



	return pdata;

}



static const struct of_device_id fan53555_dt_ids[] = {

	{

		.compatible = "fcs,fan53555",

	},

	{ }

};

MODULE_DEVICE_TABLE(of, fan53555_dt_ids);



static int fan53555_regulator_probe(struct i2c_client *client,

				const struct i2c_device_id *id)

{

	struct device_node *np = client->dev.of_node;

	struct fan53555_device_info *di;

	struct fan53555_platform_data *pdata;

	struct regulator_config config = { };
@@ -262,6 +294,9 @@ static int fan53555_regulator_probe(struct i2c_client *client, 
	int ret;



	pdata = dev_get_platdata(&client->dev);

	if (!pdata)

		pdata = fan53555_parse_dt(&client->dev, np);



	if (!pdata || !pdata->regulator) {

		dev_err(&client->dev, "Platform data not found!\n");

		return -ENODEV;
@@ -272,11 +307,15 @@ static int fan53555_regulator_probe(struct i2c_client *client, 
	if (!di)

		return -ENOMEM;



	if (!client->dev.of_node) {

		/* if no ramp constraint set, get the pdata ramp_delay */

		if (!di->regulator->constraints.ramp_delay) {

		int slew_idx = (pdata->slew_rate & 0x7) ? pdata->slew_rate : 0;

			int slew_idx = (pdata->slew_rate & 0x7)

						? pdata->slew_rate : 0;



		di->regulator->constraints.ramp_delay = slew_rates[slew_idx];

			di->regulator->constraints.ramp_delay

						= slew_rates[slew_idx];

		}

	}



	di->regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config);
@@ -314,6 +353,8 @@ static int fan53555_regulator_probe(struct i2c_client *client, 
	config.init_data = di->regulator;

	config.regmap = di->regmap;

	config.driver_data = di;

	config.of_node = np;



	ret = fan53555_regulator_register(di, &config);

	if (ret < 0)

		dev_err(&client->dev, "Failed to register regulator!\n");
@@ -329,6 +370,7 @@ static const struct i2c_device_id fan53555_id[] = { 
static struct i2c_driver fan53555_regulator_driver = {

	.driver = {

		.name = "fan53555-regulator",

		.of_match_table = of_match_ptr(fan53555_dt_ids),

	},

	.probe = fan53555_regulator_probe,

	.id_table = fan53555_id,