net/macb: Add arch specific routine to get mdio control

SPEAr310 and SPEAr320 Ethernet interfaces share same MDIO lines to control their
respective phys. Currently there is a fixed configuration in which only a
particular MAC can use the MDIO lines.

Call an arch specific function to take control of specific mdio lines at
runtime.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Acked-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 8bacbda71966942c12944d148a7acce0d176c59b..6b49f0e3e129a1f8f9b88e6705ddc11a3b2bc84e 100644 (file)
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -163,6 +163,11 @@ static u16 macb_mdio_read(struct macb_device *macb, u8 reg)
        return MACB_BFEXT(DATA, frame);
 }
 
+static void __weak arch_get_mdio_control(const char *name)
+{
+       return;
+}
+
 #if defined(CONFIG_CMD_MII)
 
 int macb_miiphy_read(const char *devname, u8 phy_adr, u8 reg, u16 *value)
@@ -173,6 +178,7 @@ int macb_miiphy_read(const char *devname, u8 phy_adr, u8 reg, u16 *value)
        if ( macb->phy_addr != phy_adr )
                return -1;
 
+       arch_get_mdio_control(devname);
        *value = macb_mdio_read(macb, reg);
 
        return 0;
@@ -186,6 +192,7 @@ int macb_miiphy_write(const char *devname, u8 phy_adr, u8 reg, u16 value)
        if ( macb->phy_addr != phy_adr )
                return -1;
 
+       arch_get_mdio_control(devname);
        macb_mdio_write(macb, reg, value);
 
        return 0;
@@ -377,6 +384,7 @@ static int macb_phy_init(struct macb_device *macb)
        int media, speed, duplex;
        int i;
 
+       arch_get_mdio_control(netdev->name);
 #ifdef CONFIG_MACB_SEARCH_PHY
        /* Auto-detect phy_addr */
        if (!macb_phy_find(macb)) {