linux-kernel - [PATCH v3 3/6] leds-lm3530: add lm3530_mode_get() in the dev

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Date:	Mon, 30 Jan 2012 23:33:44 -0800
From:	"Kim, Milo" <Milo.Kim@...com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
cc:	"Linus Walleij" <linus.walleij@...aro.org>,
	"shreshthakumar.sahu@...ricsson.com" 
	<shreshthakumar.sahu@...ricsson.com>,
	"rpurdie@...ys.net" <rpurdie@...ys.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 3/6] leds-lm3530: add lm3530_mode_get() in the
 dev_attr

To get information about brightness control mode, lm3530_mode_get() is added.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@...com>
Acked-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/leds/leds-lm3530.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
index 963a1db..b2fd545 100644
--- a/drivers/leds/leds-lm3530.c
+++ b/drivers/leds/leds-lm3530.c
@@ -275,6 +275,17 @@ static void lm3530_brightness_set(struct led_classdev *led_cdev,
 	}
 }
 
+static ssize_t lm3530_mode_get(struct device *dev,
+			struct device_attribute *attr,
+			char *buf)
+{
+	struct led_classdev *led_cdev = dev_get_drvdata(dev);
+	struct lm3530_data *drvdata =
+	    container_of(led_cdev, struct lm3530_data, led_dev);
+	enum lm3530_mode m = drvdata->mode;
+
+	return sprintf(buf, "%s\n", mode_map[m].mode);
+}
 
 static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
 				   *attr, const char *buf, size_t size)
@@ -302,7 +313,7 @@ static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
 	return sizeof(drvdata->mode);
 }
 
-static DEVICE_ATTR(mode, 0644, NULL, lm3530_mode_set);
+static DEVICE_ATTR(mode, 0644, lm3530_mode_get, lm3530_mode_set);
 
 static int __devinit lm3530_probe(struct i2c_client *client,
 			   const struct i2c_device_id *id)
-- 
1.7.4.1


Best Regards,
Milo (Woogyom) Kim
Texas Instruments Incorporated




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