hwmon: (max31785) 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.

Before this patch:

$ modinfo drivers/hwmon/pmbus/max31785.ko | grep alias
alias:          i2c:max31785a
alias:          i2c:max31785

After this patch:

$ modinfo drivers/hwmon/pmbus/max31785.ko | grep alias
alias:          i2c:max31785a
alias:          i2c:max31785
alias:          of:N*T*Cmaxim,max31785aC*
alias:          of:N*T*Cmaxim,max31785a
alias:          of:N*T*Cmaxim,max31785C*
alias:          of:N*T*Cmaxim,max31785

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/pmbus/max31785.c b/drivers/hwmon/pmbus/max31785.c
index bffab449be3989821a5bebd0025181a7b9736399..c9dc8799b5e147b0a84990355bb6df8a12b67324 100644 (file)
--- a/drivers/hwmon/pmbus/max31785.c
+++ b/drivers/hwmon/pmbus/max31785.c
@@ -383,9 +383,18 @@ static const struct i2c_device_id max31785_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, max31785_id);
 
+static const struct of_device_id max31785_of_match[] = {
+       { .compatible = "maxim,max31785" },
+       { .compatible = "maxim,max31785a" },
+       { },
+};
+
+MODULE_DEVICE_TABLE(of, max31785_of_match);
+
 static struct i2c_driver max31785_driver = {
        .driver = {
                .name = "max31785",
+               .of_match_table = max31785_of_match,
        },
        .probe = max31785_probe,
        .remove = pmbus_do_remove,