linux-kernel - [PATCH v2 1/5] Staging: iio: adt7316: Add of_device

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Date:   Tue, 20 Nov 2018 22:22:30 +0530
From:   Shreeya Patel <shreeya.patel23498@...il.com>
To:     lars@...afoo.de, Michael.Hennerich@...log.com, jic23@...nel.org,
        knaack.h@....de, pmeerw@...erw.net, gregkh@...uxfoundation.org,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/5] Staging: iio: adt7316: Add of_device_id table

When the kernel starts up, it kicks off compiled-in drivers
that match “compatible” entries it finds in the device tree.
At a later stage (when /lib/modules is available), all kernel modules
that match “compatible” entries in the device tree are loaded.

But if there is no dt table then there should be a fall back path
with which desired kernel modules can be loaded. Hence, add
of_device_id table in the i2c driver to be able to use when there
is no dt table.

Signed-off-by: Shreeya Patel <shreeya.patel23498@...il.com>
---

Changes in v2:
  - Make the commit message appropriate and assign of_match_table
in the driver structure.

 drivers/staging/iio/addac/adt7316-i2c.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/staging/iio/addac/adt7316-i2c.c b/drivers/staging/iio/addac/adt7316-i2c.c
index 473e5e34ec00..41bc4ca008bc 100644
--- a/drivers/staging/iio/addac/adt7316-i2c.c
+++ b/drivers/staging/iio/addac/adt7316-i2c.c
@@ -126,9 +126,22 @@ static const struct i2c_device_id adt7316_i2c_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, adt7316_i2c_id);
 
+static const struct of_device_id adt7316_of_match[] = {
+	{ .compatible = "adi,adt7316" },
+	{ .compatible = "adi,adt7317" },
+	{ .compatible = "adi,adt7318" },
+	{ .compatible = "adi,adt7516" },
+	{ .compatible = "adi,adt7517" },
+	{ .compatible = "adi,adt7519" },
+	{ },
+};
+
+MODULE_DEVICE_TABLE(of, adt7316_of_match);
+
 static struct i2c_driver adt7316_driver = {
 	.driver = {
 		.name = "adt7316",
+		.of_match_table = adt7316_of_match,
 		.pm = ADT7316_PM_OPS,
 	},
 	.probe = adt7316_i2c_probe,
-- 
2.17.1