hwmon: (ina209) Add OF device ID table

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>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/hwmon/ina209.c b/drivers/hwmon/ina209.c
index 5378fdefc1f7..c5f20f03e0be 100644
--- a/drivers/hwmon/ina209.c
+++ b/drivers/hwmon/ina209.c
@@ -608,11 +608,18 @@ static const struct i2c_device_id ina209_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, ina209_id);
 
+static const struct of_device_id ina209_of_match[] = {
+        { .compatible = "ti,ina209" },
+        { },
+};
+MODULE_DEVICE_TABLE(of, ina209_of_match);
+
 /* This is the driver that will be inserted */
 static struct i2c_driver ina209_driver = {
         .class          = I2C_CLASS_HWMON,
         .driver = {
                 .name   = "ina209",
+                .of_match_table = of_match_ptr(ina209_of_match),
         },
         .probe          = ina209_probe,
         .remove         = ina209_remove,