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authorJiri Pirko <jpirko@redhat.com>2010-02-04 21:23:02 +0300
committerDavid S. Miller <davem@davemloft.net>2010-02-04 21:23:02 +0300
commitf8f76db1db369f3a130ac3fd33e2eee5f1610d9c (patch)
tree808ba0be71bc55335afca100fc857d7f4e937b46
parent6683ece36e3531fc8c75f69e7165c5f20930be88 (diff)
downloadlinux-f8f76db1db369f3a130ac3fd33e2eee5f1610d9c.tar.xz
libphy: add phy_find_first function
Many drivers do this in them manually. Now they can use this function. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/phy/phy_device.c16
-rw-r--r--include/linux/phy.h1
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index adbc0fded130..db1794546c56 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -277,6 +277,22 @@ int phy_device_register(struct phy_device *phydev)
EXPORT_SYMBOL(phy_device_register);
/**
+ * phy_find_first - finds the first PHY device on the bus
+ * @bus: the target MII bus
+ */
+struct phy_device *phy_find_first(struct mii_bus *bus)
+{
+ int addr;
+
+ for (addr = 0; addr < PHY_MAX_ADDR; addr++) {
+ if (bus->phy_map[addr])
+ return bus->phy_map[addr];
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(phy_find_first);
+
+/**
* phy_prepare_link - prepares the PHY layer to monitor link status
* @phydev: target phy_device struct
* @handler: callback function for link status change notifications
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 6a7eb402165d..14d7fdf6a90a 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -452,6 +452,7 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
u32 flags, phy_interface_t interface);
struct phy_device * phy_attach(struct net_device *dev,
const char *bus_id, u32 flags, phy_interface_t interface);
+struct phy_device *phy_find_first(struct mii_bus *bus);
int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
void (*handler)(struct net_device *), u32 flags,
phy_interface_t interface);