linux-kernel - [PATCH 2/3] [POWERPC] fsl_soc: add support for gianfar for fixed-link property

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Message-ID: <20071126142915.19642.5842.stgit@localhost.localdomain>
Date:	Mon, 26 Nov 2007 17:29:15 +0300
From:	Vitaly Bordug <vitb@...nel.crashing.org>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	linuxppc-dev@...abs.org
Subject: [PATCH 2/3] [POWERPC] fsl_soc: add support for gianfar for fixed-link
	property


fixed-link says: register new "Fixed/emulated PHY", i.e. PHY that
not connected to the real MDIO bus.

Signed-off-by: Vitaly Bordug <vitb@...nel.crashing.org>
Signed-off-by: Anton Vorontsov <avorontsov@...mvista.com>

---

 Documentation/powerpc/booting-without-of.txt |    3 +
 arch/powerpc/sysdev/fsl_soc.c                |   56 ++++++++++++++++++--------
 2 files changed, 42 insertions(+), 17 deletions(-)


diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index e9a3cb1..cf25070 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1254,6 +1254,9 @@ platforms are moved over to use the flattened-device-tree model.
       services interrupts for this device.
     - phy-handle : The phandle for the PHY connected to this ethernet
       controller.
+    - fixed-link : <a b c> where a is emulated phy id - choose any,
+      but unique to the all specified fixed-links, b is duplex - 0 half,
+      1 full, c is link speed - d#10/d#100/d#1000.
 
   Recommended properties:
 
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 3ace747..e06a5c9 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -24,6 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/of_platform.h>
 #include <linux/phy.h>
+#include <linux/phy_fixed.h>
 #include <linux/spi/spi.h>
 #include <linux/fsl_devices.h>
 #include <linux/fs_enet_pd.h>
@@ -193,7 +194,6 @@ static const char *gfar_tx_intr = "tx";
 static const char *gfar_rx_intr = "rx";
 static const char *gfar_err_intr = "error";
 
-
 static int __init gfar_of_init(void)
 {
 	struct device_node *np;
@@ -277,29 +277,51 @@ static int __init gfar_of_init(void)
 			gfar_data.interface = PHY_INTERFACE_MODE_MII;
 
 		ph = of_get_property(np, "phy-handle", NULL);
-		phy = of_find_node_by_phandle(*ph);
+		if (ph == NULL) {
+			struct fixed_phy_status status = {};
+			u32 *fixed_link;
 
-		if (phy == NULL) {
-			ret = -ENODEV;
-			goto unreg;
-		}
+			fixed_link = (u32*)of_get_property(np, "fixed-link",NULL);
+			if (!fixed_link) {
+				ret = -ENODEV;
+				goto unreg;
+			}
 
-		mdio = of_get_parent(phy);
+			status.link = 1;
+			status.duplex = fixed_link[1];
+			status.speed = fixed_link[2];
+
+			ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
+			if (ret)
+				goto unreg;
+
+			gfar_data.bus_id = 0;
+			gfar_data.phy_id = fixed_link[0];
+		} else {
+			phy = of_find_node_by_phandle(*ph);
+
+			if (phy == NULL) {
+				ret = -ENODEV;
+				goto unreg;
+			}
+
+			mdio = of_get_parent(phy);
+
+			id = of_get_property(phy, "reg", NULL);
+			ret = of_address_to_resource(mdio, 0, &res);
+			if (ret) {
+				of_node_put(phy);
+				of_node_put(mdio);
+				goto unreg;
+			}
+
+			gfar_data.phy_id = *id;
+			gfar_data.bus_id = res.start;
 
-		id = of_get_property(phy, "reg", NULL);
-		ret = of_address_to_resource(mdio, 0, &res);
-		if (ret) {
 			of_node_put(phy);
 			of_node_put(mdio);
-			goto unreg;
 		}
 
-		gfar_data.phy_id = *id;
-		gfar_data.bus_id = res.start;
-
-		of_node_put(phy);
-		of_node_put(mdio);
-
 		ret =
 		    platform_device_add_data(gfar_dev, &gfar_data,
 					     sizeof(struct

-
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