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hwmon: (ina238) Support active-high alert polarity

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All chips supported by this driver support configurable active-high
alert priority. This is already documented in the devicetree description.
Add support for it to the driver.

Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # INA780
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2025-09-01 08:37:15 -07:00
parent cc67b875c9
commit 807e315bf9
1 changed files with 6 additions and 2 deletions
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8
drivers/hwmon/ina238.c
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@ -60,6 +60,7 @@
#define INA238_ADC_CONFIG_DEFAULT 0xfb6a
/* Configure alerts to be based on averaged value (SLOWALERT) */
#define INA238_DIAG_ALERT_DEFAULT 0x2000
#define INA238_DIAG_ALERT_APOL BIT(12)
/*
* This driver uses a fixed calibration value in order to scale current/power
* based on a fixed shunt resistor value. This allows for conversion within the
@ -793,8 +794,11 @@ static int ina238_probe(struct i2c_client *client)
}
/* Setup alert/alarm configuration */
ret = regmap_write(data->regmap, INA238_DIAG_ALERT,
INA238_DIAG_ALERT_DEFAULT);
config = INA238_DIAG_ALERT_DEFAULT;
if (device_property_read_bool(dev, "ti,alert-polarity-active-high"))
config |= INA238_DIAG_ALERT_APOL;
ret = regmap_write(data->regmap, INA238_DIAG_ALERT, config);
if (ret < 0) {
dev_err(dev, "error configuring the device: %d\n", ret);
return -ENODEV;