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-rw-r--r--drivers/of/of_mdio.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index aee967d7f760..bacaa536fd51 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -9,6 +9,10 @@
9 * out of the OpenFirmware device tree and using it to populate an mii_bus. 9 * out of the OpenFirmware device tree and using it to populate an mii_bus.
10 */ 10 */
11 11
12#include <linux/kernel.h>
13#include <linux/device.h>
14#include <linux/netdevice.h>
15#include <linux/err.h>
12#include <linux/phy.h> 16#include <linux/phy.h>
13#include <linux/of.h> 17#include <linux/of.h>
14#include <linux/of_mdio.h> 18#include <linux/of_mdio.h>
@@ -137,3 +141,41 @@ struct phy_device *of_phy_connect(struct net_device *dev,
137 return phy_connect_direct(dev, phy, hndlr, flags, iface) ? NULL : phy; 141 return phy_connect_direct(dev, phy, hndlr, flags, iface) ? NULL : phy;
138} 142}
139EXPORT_SYMBOL(of_phy_connect); 143EXPORT_SYMBOL(of_phy_connect);
144
145/**
146 * of_phy_connect_fixed_link - Parse fixed-link property and return a dummy phy
147 * @dev: pointer to net_device claiming the phy
148 * @hndlr: Link state callback for the network device
149 * @iface: PHY data interface type
150 *
151 * This function is a temporary stop-gap and will be removed soon. It is
152 * only to support the fs_enet, ucc_geth and gianfar Ethernet drivers. Do
153 * not call this function from new drivers.
154 */
155struct phy_device *of_phy_connect_fixed_link(struct net_device *dev,
156 void (*hndlr)(struct net_device *),
157 phy_interface_t iface)
158{
159 struct device_node *net_np;
160 char bus_id[MII_BUS_ID_SIZE + 3];
161 struct phy_device *phy;
162 const u32 *phy_id;
163 int sz;
164
165 if (!dev->dev.parent)
166 return NULL;
167
168 net_np = dev_archdata_get_node(&dev->dev.parent->archdata);
169 if (!net_np)
170 return NULL;
171
172 phy_id = of_get_property(net_np, "fixed-link", &sz);
173 if (!phy_id || sz < sizeof(*phy_id))
174 return NULL;
175
176 sprintf(bus_id, PHY_ID_FMT, "0", phy_id[0]);
177
178 phy = phy_connect(dev, bus_id, hndlr, 0, iface);
179 return IS_ERR(phy) ? NULL : phy;
180}
181EXPORT_SYMBOL(of_phy_connect_fixed_link);