linux-kernel - [PATCH 12/13] device property: add fwnode_get

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Date:	Wed, 17 Jun 2015 15:42:22 +0200
From:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Alexander Holler <holler@...oftware.de>,
	Alexandre Courbot <gnurou@...il.com>,
	Andrzej Hajda <a.hajda@...sung.com>,
	Arnd Bergmann <arnd@...db.de>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Kumar Gala <galak@...eaurora.org>, Len Brown <lenb@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-kernel@...r.kernel.org, Lv Zheng <lv.zheng@...el.com>,
	Mark Brown <broonie@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Robert Moore <robert.moore@...el.com>,
	Rob Herring <robh+dt@...nel.org>,
	Russell King <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	Terje Bergström <tbergstrom@...dia.com>,
	Thierry Reding <thierry.reding@...il.com>
Subject: [PATCH 12/13] device property: add fwnode_get_name()

Getting a textual representation of a device node can be very useful for
debugging.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
---
 drivers/base/property.c  | 15 +++++++++++++++
 include/linux/property.h |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 28645a9..05e45f8 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -542,3 +542,18 @@ struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode)
 	return NULL;
 }
 EXPORT_SYMBOL_GPL(fwnode_get_parent);
+
+/**
+ * fwnode_get_name - return the name of a device node
+ * @fwnode: Device node to find the name of
+ */
+const char *fwnode_get_name(struct fwnode_handle *fwnode)
+{
+	if (is_of_node(fwnode))
+		return of_node(fwnode)->full_name;
+	else if (is_acpi_node(fwnode))
+		return acpi_dev_name(acpi_node(fwnode));
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(fwnode_get_name);
diff --git a/include/linux/property.h b/include/linux/property.h
index 01e0483..7b7c0e8 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -65,6 +65,8 @@ struct fwnode_handle *device_get_next_child_node(struct device *dev,
 
 struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode);
 
+const char *fwnode_get_name(struct fwnode_handle *fwnode);
+
 #define device_for_each_child_node(dev, child) \
 	for (child = device_get_next_child_node(dev, NULL); child; \
 	     child = device_get_next_child_node(dev, child))
-- 
2.4.1

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