linux-kernel - [PATCH v2 14/17] iio: accel: mma7455

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Date:   Wed, 15 Mar 2017 01:45:02 -0300
From:   Javier Martinez Canillas <javier@....samsung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Javier Martinez Canillas <javier@....samsung.com>,
        linux-iio@...r.kernel.org, Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Jonathan Cameron <jic23@...nel.org>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>
Subject: [PATCH v2 14/17] iio: accel: mma7455_i2c: 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/iio/accel/mma7455_i2c.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/iio/accel/mma7455_i2c.c b/drivers/iio/accel/mma7455_i2c.c
index 3cab5fb4a3c4..73bf81a8ab14 100644
--- a/drivers/iio/accel/mma7455_i2c.c
+++ b/drivers/iio/accel/mma7455_i2c.c
@@ -41,12 +41,20 @@ static const struct i2c_device_id mma7455_i2c_ids[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mma7455_i2c_ids);
 
+static const struct of_device_id mma7455_of_match[] = {
+	{ .compatible = "fsl,mma7455" },
+	{ .compatible = "fsl,mma7456" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, mma7455_of_match);
+
 static struct i2c_driver mma7455_i2c_driver = {
 	.probe = mma7455_i2c_probe,
 	.remove = mma7455_i2c_remove,
 	.id_table = mma7455_i2c_ids,
 	.driver = {
 		.name	= "mma7455-i2c",
+		.of_match_table = mma7455_of_match,
 	},
 };
 module_i2c_driver(mma7455_i2c_driver);
-- 
2.9.3