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>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index b55aa33a5b8b..74630e94fa3b 100644
--- 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,