netdev - [RFC net-next 03/11] net: dsa: provide a switch device device tree node pointer

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Date:	Tue, 13 May 2014 22:00:29 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, Florian Fainelli <f.fainelli@...il.com>,
	nhorman@...driver.com, andy@...yhouse.net, tgraf@...g.ch,
	dborkman@...hat.com, ogerlitz@...lanox.com, jesse@...ira.com,
	pshelar@...ira.com, azhou@...ira.com, ben@...adent.org.uk,
	stephen@...workplumber.org, jeffrey.t.kirsher@...el.com,
	vyasevic@...hat.com, xiyou.wangcong@...il.com,
	john.r.fastabend@...el.com, edumazet@...gle.com, jhs@...atatu.com,
	sfeldma@...ulusnetworks.com, roopa@...ulusnetworks.com,
	linville@...driver.com, jasowang@...hat.com, ebiederm@...ssion.com,
	nicolas.dichtel@...nd.com, ryazanov.s.a@...il.com,
	buytenh@...tstofly.org, aviadr@...lanox.com, nbd@...nwrt.org,
	alexei.starovoitov@...il.com, Neil.Jerram@...aswitch.com
Subject: [RFC net-next 03/11] net: dsa: provide a switch device device tree node pointer

We might need to fetch additional resources from the device tree node
pointer, such as register ranges or other properties. Keep a device_node
pointer around for this.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 include/net/dsa.h | 7 +++++++
 net/dsa/dsa.c     | 1 +
 2 files changed, 8 insertions(+)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 0ada9c814ff9..9a16c5290738 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -15,6 +15,7 @@
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/workqueue.h>
+#include <linux/of.h>
 
 #define DSA_MAX_SWITCHES	4
 #define DSA_MAX_PORTS		12
@@ -26,6 +27,12 @@ struct dsa_chip_data {
 	struct device	*mii_bus;
 	int		sw_addr;
 
+	/* Device tree node pointer for this specific switch chip
+	 * used during switch setup in case additional properties
+	 * and resources needs to be used
+	 */
+	struct device_node *of_node;
+
 	/*
 	 * The names of the switch's ports.  Use "cpu" to
 	 * designate the switch port that the cpu is connected to,
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 0eb5d5e76dfb..7808dbceff96 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -410,6 +410,7 @@ static int dsa_of_probe(struct platform_device *pdev)
 	for_each_available_child_of_node(np, child) {
 		cd = &pd->chip[chip_index];
 
+		cd->of_node = child;
 		cd->mii_bus = &mdio_bus->dev;
 
 		sw_addr = of_get_property(child, "reg", NULL);
-- 
1.9.1

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