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hwmon: (ina238) Drop platform data support

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There are no in-tree users of ina2xx platform data. Drop
support for it. The driver already supports device properties
which can be used as alternative if needed.

Also remove reference to the non-existing shunt_resistor sysfs
attribute from the driver documentation.

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 2025-08-31 14:53:58 -07:00
parent 0bcd01f757
commit 9a8113a5c6
2 changed files with 6 additions and 10 deletions
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8
Documentation/hwmon/ina238.rst
View File

@ -29,10 +29,10 @@ The INA238 is a current shunt, power and temperature monitor with an I2C
interface. It includes a number of programmable functions including alerts,
conversion rate, sample averaging and selectable shunt voltage accuracy.
The shunt value in micro-ohms can be set via platform data or device tree at
compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings
if the device tree is used.
The shunt value in micro-ohms can be set via device properties, either from
platform code or from device tree data. Please refer to
Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings if
device tree is used.
Sysfs entries
-------------

8
drivers/hwmon/ina238.c
View File

@ -16,8 +16,6 @@
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/platform_data/ina2xx.h>
/* INA238 register definitions */
#define INA238_CONFIG 0x0
#define INA238_ADC_CONFIG 0x1
@ -745,7 +743,6 @@ ATTRIBUTE_GROUPS(ina238);
static int ina238_probe(struct i2c_client *client)
{
struct ina2xx_platform_data *pdata = dev_get_platdata(&client->dev);
struct device *dev = &client->dev;
struct device *hwmon_dev;
struct ina238_data *data;
@ -772,9 +769,8 @@ static int ina238_probe(struct i2c_client *client)
}
/* load shunt value */
data->rshunt = INA238_RSHUNT_DEFAULT;
if (device_property_read_u32(dev, "shunt-resistor", &data->rshunt) < 0 && pdata)
data->rshunt = pdata->shunt_uohms;
if (device_property_read_u32(dev, "shunt-resistor", &data->rshunt) < 0)
data->rshunt = INA238_RSHUNT_DEFAULT;
if (data->rshunt == 0) {
dev_err(dev, "invalid shunt resister value %u\n", data->rshunt);
return -EINVAL;