Commit 14a3d159 authored by Marek Vasut's avatar Marek Vasut Committed by Sebastian Reichel
Browse files

power: supply: bq25890: Add Vsys regulator 



The chip is capable of reporting Vsys voltage supplied to the system.
Add regulator which represents the Vsys supply. This can be used e.g.
as a supply for system PMIC input.

Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 85052e90

drivers/power/supply/bq25890_charger.c

+32 −0
Original line number Diff line number Diff line
@@ -1102,6 +1102,20 @@ static int bq25890_vbus_get_voltage(struct regulator_dev *rdev) 
	return bq25890_get_vbus_voltage(bq);

}



static int bq25890_vsys_get_voltage(struct regulator_dev *rdev)

{

	struct bq25890_device *bq = rdev_get_drvdata(rdev);

	int ret;



	/* Should be some output voltage ? */

	ret = bq25890_field_read(bq, F_SYSV); /* read measured value */

	if (ret < 0)

		return ret;



	/* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */

	return 2304000 + ret * 20000;

}



static const struct regulator_ops bq25890_vbus_ops = {

	.enable = bq25890_vbus_enable,

	.disable = bq25890_vbus_disable,
@@ -1117,6 +1131,18 @@ static const struct regulator_desc bq25890_vbus_desc = { 
	.ops = &bq25890_vbus_ops,

};



static const struct regulator_ops bq25890_vsys_ops = {

	.get_voltage = bq25890_vsys_get_voltage,

};



static const struct regulator_desc bq25890_vsys_desc = {

	.name = "vsys",

	.of_match = "vsys",

	.type = REGULATOR_VOLTAGE,

	.owner = THIS_MODULE,

	.ops = &bq25890_vsys_ops,

};



static int bq25890_register_regulator(struct bq25890_device *bq)

{

	struct bq25890_platform_data *pdata = dev_get_platdata(bq->dev);
@@ -1135,6 +1161,12 @@ static int bq25890_register_regulator(struct bq25890_device *bq) 
				     "registering vbus regulator");

	}



	reg = devm_regulator_register(bq->dev, &bq25890_vsys_desc, &cfg);

	if (IS_ERR(reg)) {

		return dev_err_probe(bq->dev, PTR_ERR(reg),

				     "registering vsys regulator");

	}



	return 0;

}

#else