phy: allow drivers to flag a PHY device as internal

libphy currently always reports a PHY as an external transceiver from
the ethtool output. This is inaccurate, because some drivers should be
able to tell that a PHY device is an internal transceiver of an Ethernet
MAC. Add a new flag (PHY_IS_INTERNAL) which can be set by PHY drivers
just like other flags, and a corresponding helper: phy_is_internal()
which can be used by networking drivers to query if a given
PHY device is internal.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 2d28a0e..b2a94e4 100644 (file)
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -294,7 +294,8 @@ int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd)
        cmd->duplex = phydev->duplex;
        cmd->port = PORT_MII;
        cmd->phy_address = phydev->addr;
-       cmd->transceiver = XCVR_EXTERNAL;
+       cmd->transceiver = phy_is_internal(phydev) ?
+               XCVR_INTERNAL : XCVR_EXTERNAL;
        cmd->autoneg = phydev->autoneg;
 
        return 0;

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index b55aa33..74630e9 100644 (file)
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1017,6 +1017,9 @@ static int phy_probe(struct device *dev)
                        phy_interrupt_is_valid(phydev))
                phydev->irq = PHY_POLL;
 
+       if (phydrv->flags & PHY_IS_INTERNAL)
+               phydev->is_internal = true;
+
        mutex_lock(&phydev->lock);
 
        /* Start out supporting everything. Eventually,

diff --git a/include/linux/phy.h b/include/linux/phy.h
index fdfa115..ee411b0 100644 (file)
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -49,6 +49,7 @@
 
 #define PHY_HAS_INTERRUPT      0x00000001
 #define PHY_HAS_MAGICANEG      0x00000002
+#define PHY_IS_INTERNAL                0x00000004
 
 /* Interface Mode definitions */
 typedef enum {
@@ -261,6 +262,7 @@ struct phy_c45_device_ids {
  * phy_id: UID for this device found during discovery
  * c45_ids: 802.3-c45 Device Identifers if is_c45.
  * is_c45:  Set to true if this phy uses clause 45 addressing.
+ * is_internal: Set to true if this phy is internal to a MAC.
  * state: state of the PHY for management purposes
  * dev_flags: Device-specific flags used by the PHY driver.
  * addr: Bus address of PHY
@@ -298,6 +300,7 @@ struct phy_device {
 
        struct phy_c45_device_ids c45_ids;
        bool is_c45;
+       bool is_internal;
 
        enum phy_state state;
 
@@ -520,6 +523,15 @@ static inline bool phy_interrupt_is_valid(struct phy_device *phydev)
        return phydev->irq != PHY_POLL && phydev->irq != PHY_IGNORE_INTERRUPT;
 }
 
+/**
+ * phy_is_internal - Convenience function for testing if a PHY is internal
+ * @phydev: the phy_device struct
+ */
+static inline bool phy_is_internal(struct phy_device *phydev)
+{
+       return phydev->is_internal;
+}
+
 struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
                bool is_c45, struct phy_c45_device_ids *c45_ids);
 struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);