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power: supply: rn5t618: Add voltage_now property

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Read voltage_now via IIO and provide the property.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Reported-by: kernel test robot <lkp@intel.com> # missing depends on IIO
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Andreas Kemnade 2021-07-12 23:21:11 +02:00 committed by Sebastian Reichel
parent 1a844ddf06
commit 2f5caa26a0
2 changed files with 40 additions and 0 deletions
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2
drivers/power/supply/Kconfig
View File

@ -792,6 +792,8 @@ config CHARGER_WILCO
config RN5T618_POWER
tristate "RN5T618 charger/fuel gauge support"
depends on MFD_RN5T618
depends on RN5T618_ADC
depends on IIO
help
Say Y here to have support for RN5T618 PMIC family fuel gauge and charger.
This driver can also be built as a module. If so, the module will be

38
drivers/power/supply/rn5t618_power.c
View File

@ -9,10 +9,12 @@
#include <linux/device.h>
#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/iio/consumer.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/mfd/rn5t618.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>
@ -64,6 +66,8 @@ struct rn5t618_power_info {
struct power_supply *battery;
struct power_supply *usb;
struct power_supply *adp;
struct iio_channel *channel_vusb;
struct iio_channel *channel_vadp;
int irq;
};
@ -77,6 +81,7 @@ static enum power_supply_usb_type rn5t618_usb_types[] = {
static enum power_supply_property rn5t618_usb_props[] = {
/* input current limit is not very accurate */
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_USB_TYPE,
POWER_SUPPLY_PROP_ONLINE,
@ -85,6 +90,7 @@ static enum power_supply_property rn5t618_usb_props[] = {
static enum power_supply_property rn5t618_adp_props[] = {
/* input current limit is not very accurate */
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
};
@ -463,6 +469,15 @@ static int rn5t618_adp_get_property(struct power_supply *psy,
return ret;
val->intval = FROM_CUR_REG(regval);
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
if (!info->channel_vadp)
return -ENODATA;
ret = iio_read_channel_processed_scale(info->channel_vadp, &val->intval, 1000);
if (ret < 0)
return ret;
break;
default:
return -EINVAL;
@ -588,6 +603,15 @@ static int rn5t618_usb_get_property(struct power_supply *psy,
val->intval = FROM_CUR_REG(regval);
}
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
if (!info->channel_vusb)
return -ENODATA;
ret = iio_read_channel_processed_scale(info->channel_vusb, &val->intval, 1000);
if (ret < 0)
return ret;
break;
default:
return -EINVAL;
@ -711,6 +735,20 @@ static int rn5t618_power_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, info);
info->channel_vusb = devm_iio_channel_get(&pdev->dev, "vusb");
if (IS_ERR(info->channel_vusb)) {
if (PTR_ERR(info->channel_vusb) == -ENODEV)
return -EPROBE_DEFER;
return PTR_ERR(info->channel_vusb);
}
info->channel_vadp = devm_iio_channel_get(&pdev->dev, "vadp");
if (IS_ERR(info->channel_vadp)) {
if (PTR_ERR(info->channel_vadp) == -ENODEV)
return -EPROBE_DEFER;
return PTR_ERR(info->channel_vadp);
}
ret = regmap_read(info->rn5t618->regmap, RN5T618_CONTROL, &v);
if (ret)
return ret;