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authorLennert Buytenhek <buytenh@wantstofly.org>2008-09-29 17:12:35 +0000
committerDavid S. Miller <davem@davemloft.net>2008-10-08 16:38:41 -0700
commit2e888103295f47b8fcbf7e9bb8c5da97dd2ecd76 (patch)
tree210943ed285496352078124fd2a43443b1e5b265
parent46abc02175b3c246dd5141d878f565a8725060c9 (diff)
phylib: add mdiobus_{read,write}
Add mdiobus_{read,write} routines to allow direct reading/writing of registers on an mii bus without having to go through the PHY abstraction, and make phy_{read,write} use these primitives. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/phy/mdio_bus.c49
-rw-r--r--drivers/net/phy/phy.c49
-rw-r--r--include/linux/phy.h46
3 files changed, 87 insertions, 57 deletions
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index fb4c0965b152..6671e2da0d57 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -211,6 +211,55 @@ struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr)
EXPORT_SYMBOL(mdiobus_scan);
/**
+ * mdiobus_read - Convenience function for reading a given MII mgmt register
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @regnum: register number to read
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+int mdiobus_read(struct mii_bus *bus, int addr, u16 regnum)
+{
+ int retval;
+
+ BUG_ON(in_interrupt());
+
+ mutex_lock(&bus->mdio_lock);
+ retval = bus->read(bus, addr, regnum);
+ mutex_unlock(&bus->mdio_lock);
+
+ return retval;
+}
+EXPORT_SYMBOL(mdiobus_read);
+
+/**
+ * mdiobus_write - Convenience function for writing a given MII mgmt register
+ * @bus: the mii_bus struct
+ * @addr: the phy address
+ * @regnum: register number to write
+ * @val: value to write to @regnum
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+int mdiobus_write(struct mii_bus *bus, int addr, u16 regnum, u16 val)
+{
+ int err;
+
+ BUG_ON(in_interrupt());
+
+ mutex_lock(&bus->mdio_lock);
+ err = bus->write(bus, addr, regnum, val);
+ mutex_unlock(&bus->mdio_lock);
+
+ return err;
+}
+EXPORT_SYMBOL(mdiobus_write);
+
+/**
* mdio_bus_match - determine if given PHY driver supports the given PHY device
* @dev: target PHY device
* @drv: given PHY driver
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 20cc82c78137..df4e6257d4a7 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -58,55 +58,6 @@ EXPORT_SYMBOL(phy_print_status);
/**
- * phy_read - Convenience function for reading a given PHY register
- * @phydev: the phy_device struct
- * @regnum: register number to read
- *
- * NOTE: MUST NOT be called from interrupt context,
- * because the bus read/write functions may wait for an interrupt
- * to conclude the operation.
- */
-int phy_read(struct phy_device *phydev, u16 regnum)
-{
- int retval;
- struct mii_bus *bus = phydev->bus;
-
- BUG_ON(in_interrupt());
-
- mutex_lock(&bus->mdio_lock);
- retval = bus->read(bus, phydev->addr, regnum);
- mutex_unlock(&bus->mdio_lock);
-
- return retval;
-}
-EXPORT_SYMBOL(phy_read);
-
-/**
- * phy_write - Convenience function for writing a given PHY register
- * @phydev: the phy_device struct
- * @regnum: register number to write
- * @val: value to write to @regnum
- *
- * NOTE: MUST NOT be called from interrupt context,
- * because the bus read/write functions may wait for an interrupt
- * to conclude the operation.
- */
-int phy_write(struct phy_device *phydev, u16 regnum, u16 val)
-{
- int err;
- struct mii_bus *bus = phydev->bus;
-
- BUG_ON(in_interrupt());
-
- mutex_lock(&bus->mdio_lock);
- err = bus->write(bus, phydev->addr, regnum, val);
- mutex_unlock(&bus->mdio_lock);
-
- return err;
-}
-EXPORT_SYMBOL(phy_write);
-
-/**
* phy_clear_interrupt - Ack the phy device's interrupt
* @phydev: the phy_device struct
*
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 891f27f9137e..77c4ed60b982 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -122,6 +122,15 @@ struct mii_bus {
};
#define to_mii_bus(d) container_of(d, struct mii_bus, dev)
+struct mii_bus *mdiobus_alloc(void);
+int mdiobus_register(struct mii_bus *bus);
+void mdiobus_unregister(struct mii_bus *bus);
+void mdiobus_free(struct mii_bus *bus);
+struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
+int mdiobus_read(struct mii_bus *bus, int addr, u16 regnum);
+int mdiobus_write(struct mii_bus *bus, int addr, u16 regnum, u16 val);
+
+
#define PHY_INTERRUPT_DISABLED 0x0
#define PHY_INTERRUPT_ENABLED 0x80000000
@@ -399,8 +408,35 @@ struct phy_fixup {
int (*run)(struct phy_device *phydev);
};
-int phy_read(struct phy_device *phydev, u16 regnum);
-int phy_write(struct phy_device *phydev, u16 regnum, u16 val);
+/**
+ * phy_read - Convenience function for reading a given PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to read
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+static inline int phy_read(struct phy_device *phydev, u16 regnum)
+{
+ return mdiobus_read(phydev->bus, phydev->addr, regnum);
+}
+
+/**
+ * phy_write - Convenience function for writing a given PHY register
+ * @phydev: the phy_device struct
+ * @regnum: register number to write
+ * @val: value to write to @regnum
+ *
+ * NOTE: MUST NOT be called from interrupt context,
+ * because the bus read/write functions may wait for an interrupt
+ * to conclude the operation.
+ */
+static inline int phy_write(struct phy_device *phydev, u16 regnum, u16 val)
+{
+ return mdiobus_write(phydev->bus, phydev->addr, regnum, val);
+}
+
int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id);
struct phy_device* get_phy_device(struct mii_bus *bus, int addr);
int phy_clear_interrupt(struct phy_device *phydev);
@@ -416,12 +452,6 @@ void phy_start(struct phy_device *phydev);
void phy_stop(struct phy_device *phydev);
int phy_start_aneg(struct phy_device *phydev);
-struct mii_bus *mdiobus_alloc(void);
-int mdiobus_register(struct mii_bus *bus);
-void mdiobus_unregister(struct mii_bus *bus);
-void mdiobus_free(struct mii_bus *bus);
-struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
-
void phy_sanitize_settings(struct phy_device *phydev);
int phy_stop_interrupts(struct phy_device *phydev);
int phy_enable_interrupts(struct phy_device *phydev);