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hwmon: (ina2xx) Add OF device ID table

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The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Javier Martinez Canillas 2017-02-24 10:13:00 -03:00 committed by Guenter Roeck
parent 0b7abe59be
commit bd0ddd4d08
1 changed files with 34 additions and 1 deletions
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35
drivers/hwmon/ina2xx.c
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@ -34,6 +34,7 @@
#include <linux/hwmon.h> #include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h> #include <linux/hwmon-sysfs.h>
#include <linux/jiffies.h> #include <linux/jiffies.h>
#include <linux/of_device.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/util_macros.h> #include <linux/util_macros.h>
@ -424,13 +425,19 @@ static int ina2xx_probe(struct i2c_client *client,
struct device *hwmon_dev; struct device *hwmon_dev;
u32 val; u32 val;
int ret, group = 0; int ret, group = 0;
enum ina2xx_ids chip;
if (client->dev.of_node)
chip = (enum ina2xx_ids)of_device_get_match_data(&client->dev);
else
chip = id->driver_data;
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data) if (!data)
return -ENOMEM; return -ENOMEM;
/* set the device type */ /* set the device type */
data->config = &ina2xx_config[id->driver_data]; data->config = &ina2xx_config[chip];
if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0) { if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0) {
struct ina2xx_platform_data *pdata = dev_get_platdata(dev); struct ina2xx_platform_data *pdata = dev_get_platdata(dev);
@ -487,9 +494,35 @@ static const struct i2c_device_id ina2xx_id[] = {
}; };
MODULE_DEVICE_TABLE(i2c, ina2xx_id); MODULE_DEVICE_TABLE(i2c, ina2xx_id);
static const struct of_device_id ina2xx_of_match[] = {
{
.compatible = "ti,ina219",
.data = (void *)ina219
},
{
.compatible = "ti,ina220",
.data = (void *)ina219
},
{
.compatible = "ti,ina226",
.data = (void *)ina226
},
{
.compatible = "ti,ina230",
.data = (void *)ina226
},
{
.compatible = "ti,ina231",
.data = (void *)ina226
},
{ },
};
MODULE_DEVICE_TABLE(of, ina2xx_of_match);
static struct i2c_driver ina2xx_driver = { static struct i2c_driver ina2xx_driver = {
.driver = { .driver = {
.name = "ina2xx", .name = "ina2xx",
.of_match_table = of_match_ptr(ina2xx_of_match),
}, },
.probe = ina2xx_probe, .probe = ina2xx_probe,
.id_table = ina2xx_id, .id_table = ina2xx_id,