It adds device tree data parsing support for fec driver.

Signed-off-by: Jason Liu<redacted>
Signed-off-by: Shawn Guo<redacted>
Cc: David S. Miller<davem@davemloft.net>
---
  Documentation/devicetree/bindings/net/fsl-fec.txt |   14 ++++++++++
  drivers/net/fec.c                                 |   28 +++++++++++++++++++++
  2 files changed, 42 insertions(+), 0 deletions(-)
  create mode 100644 Documentation/devicetree/bindings/net/fsl-fec.txt

diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt
new file mode 100644
index 0000000..705111d
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/fsl-fec.txt

@@ -0,0 +1,14 @@
+* Freescale Fast Ethernet Controller (FEC)
+
+Required properties:
+- compatible : should be "fsl,<soc>-fec", "fsl,fec"
+- reg : address and length of the register set for the device
+- interrupts : should contain fec interrupt
+
+Example:
+
+fec@83fec000 {
+	compatible = "fsl,imx51-fec", "fsl,fec";
+	reg =<0x83fec000 0x4000>;
+	interrupts =<87>;
+};

diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index 885d8ba..ef3d175 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c

@@ -44,6 +44,8 @@
  #include<linux/platform_device.h>
  #include<linux/phy.h>
  #include<linux/fec.h>
+#include<linux/of.h>
+#include<linux/of_device.h>

  #include<asm/cacheflush.h>

@@ -78,6 +80,26 @@ static struct platform_device_id fec_devtype[] = {
  	{ }
  };

+#ifdef CONFIG_OF
+static const struct of_device_id fec_dt_ids[] = {
+	{ .compatible = "fsl,fec", .data =&fec_devtype[0], },
+	{},
+};
+
+static const struct of_device_id *
+fec_get_of_device_id(struct platform_device *pdev)
+{
+	return of_match_device(fec_dt_ids,&pdev->dev);
+}
+#else
+#define fec_dt_ids NULL
+static inline struct of_device_id *
+fec_get_of_device_id(struct platform_device *pdev)
+{
+	return NULL;
+}
+#endif
+
  static unsigned char macaddr[ETH_ALEN];
  module_param_array(macaddr, byte, NULL, 0);
  MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");

@@ -1363,6 +1385,11 @@ fec_probe(struct platform_device *pdev)
  	struct net_device *ndev;
  	int i, irq, ret = 0;
  	struct resource *r;
+	const struct of_device_id *of_id;
+
+	of_id = fec_get_of_device_id(pdev);

+	if (of_id)
+		pdev->id_entry = (struct platform_device_id *) of_id->data;

  	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  	if (!r)

@@ -1531,6 +1558,7 @@ static struct platform_driver fec_driver = {
  #ifdef CONFIG_PM
  		.pm	=&fec_pm_ops,
  #endif
+		.of_match_table = fec_dt_ids,
  	},
  	.id_table = fec_devtype,
  	.probe	= fec_probe,