[PATCH v7 4/6] ad5820: Add support for of-autoload

[Ricardo Ribalda Delgado]

Since kernel 4.16, i2c devices with DT compatible tag are modprobed
using their DT modalias.
Without this patch, if this driver is build as module it would never
be autoprobed.

There is no need to mask it with CONFIG_OF to allow ACPI loading, this
also builds find with CONFIG_OF=n.

Signed-off-by: Ricardo Ribalda Delgado <ribalda@xxxxxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
 drivers/media/i2c/ad5820.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/media/i2c/ad5820.c b/drivers/media/i2c/ad5820.c
index 76aab651f217..5651609e5095 100644
--- a/drivers/media/i2c/ad5820.c
+++ b/drivers/media/i2c/ad5820.c
@@ -364,12 +364,19 @@ static const struct i2c_device_id ad5820_id_table[] = {
 };
 MODULE_DEVICE_TABLE(i2c, ad5820_id_table);
 
+static const struct of_device_id ad5820_of_table[] = {
+	{ .compatible = "adi,ad5820" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ad5820_of_table);
+
 static SIMPLE_DEV_PM_OPS(ad5820_pm, ad5820_suspend, ad5820_resume);
 
 static struct i2c_driver ad5820_i2c_driver = {
 	.driver		= {
 		.name	= AD5820_NAME,
 		.pm	= &ad5820_pm,
+		.of_match_table = ad5820_of_table,
 	},
 	.probe		= ad5820_probe,
 	.remove		= ad5820_remove,
-- 
2.23.0