linux-kernel - [PATCH] misc: bh1780: probe from compatible string

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Message-Id: <1380714407-22881-1-git-send-email-linus.walleij@linaro.org>
Date:	Wed,  2 Oct 2013 13:46:47 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Arnd Bergmann <arnd@...db.de>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH] misc: bh1780: probe from compatible string

Currently the BH1780GLI I2C driver relies on the device tree node
having the right name, but this is fragile. Use the compatible
string to probe the driver instead.

Cc: Wolfram Sang <wsa@...-dreams.de>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/misc/bh1780gli.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c
index 057580e..48ea33d 100644
--- a/drivers/misc/bh1780gli.c
+++ b/drivers/misc/bh1780gli.c
@@ -23,6 +23,7 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/of.h>
 
 #define BH1780_REG_CONTROL	0x80
 #define BH1780_REG_PARTID	0x8A
@@ -244,6 +245,15 @@ static const struct i2c_device_id bh1780_id[] = {
 	{ },
 };
 
+#ifdef CONFIG_OF
+static const struct of_device_id of_bh1780_match[] = {
+	{ .compatible = "rohm,bh1780gli", },
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, of_bh1780_match);
+#endif
+
 static struct i2c_driver bh1780_driver = {
 	.probe		= bh1780_probe,
 	.remove		= bh1780_remove,
@@ -251,6 +261,7 @@ static struct i2c_driver bh1780_driver = {
 	.driver = {
 		.name = "bh1780",
 		.pm	= &bh1780_pm,
+		.of_match_table = of_match_ptr(of_bh1780_match),
 	},
 };
 
-- 
1.8.3.1

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