linux-kernel - [PATCH 02/13] rtc: rv3029: Add OF device ID table

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Date:   Fri,  3 Mar 2017 11:29:13 -0300
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Javier Martinez Canillas <javier@....samsung.com>,
        Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        rtc-linux@...glegroups.com, Alessandro Zummo <a.zummo@...ertech.it>
Subject: [PATCH 02/13] rtc: rv3029: 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@....samsung.com>
---

 drivers/rtc/rtc-rv3029c2.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c
index 1f9f7b4bf3fb..85fa1da03762 100644
--- a/drivers/rtc/rtc-rv3029c2.c
+++ b/drivers/rtc/rtc-rv3029c2.c
@@ -875,9 +875,18 @@ static struct i2c_device_id rv3029_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, rv3029_id);
 
+static const struct of_device_id rv3029_of_match[] = {
+	{ .compatible = "rv3029" },
+	{ .compatible = "rv3029c2" },
+	{ .compatible = "mc,rv3029c2" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rv3029_of_match);
+
 static struct i2c_driver rv3029_driver = {
 	.driver = {
 		.name = "rtc-rv3029c2",
+		.of_match_table = of_match_ptr(rv3029_of_match),
 	},
 	.probe		= rv3029_i2c_probe,
 	.id_table	= rv3029_id,
-- 
2.9.3