rtc: rx8581: 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: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c
index 0c362a3d1f178d6f19e12c1b051f5a2eef53666e..9998d7937688c6e27d351c846cdfe16b978b48ef 100644 (file)
--- a/drivers/rtc/rtc-rx8581.c
+++ b/drivers/rtc/rtc-rx8581.c
@@ -308,9 +308,16 @@ static const struct i2c_device_id rx8581_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, rx8581_id);
 
+static const struct of_device_id rx8581_of_match[] = {
+       { .compatible = "epson,rx8581" },
+       { }
+};
+MODULE_DEVICE_TABLE(of, rx8581_of_match);
+
 static struct i2c_driver rx8581_driver = {
        .driver         = {
                .name   = "rtc-rx8581",
+               .of_match_table = of_match_ptr(rx8581_of_match),
        },
        .probe          = rx8581_probe,
        .id_table       = rx8581_id,