phy/at8031: enable at8031 to work on interrupt mode

The at8031 can work on polling mode and interrupt mode.
Add ack_interrupt and config intr funcs to enable
interrupt mode for it.

Signed-off-by: Zhao Qiang <B45475@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index bc71947b1ec329f2eacd52b915b37ce56a4f16bb..643464d5a727b3b937fbe803072861de15a1414f 100644 (file)
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -27,6 +27,9 @@
 #define AT803X_MMD_ACCESS_CONTROL              0x0D
 #define AT803X_MMD_ACCESS_CONTROL_DATA         0x0E
 #define AT803X_FUNC_DATA                       0x4003
+#define AT803X_INER                            0x0012
+#define AT803X_INER_INIT                       0xec00
+#define AT803X_INSR                            0x0013
 #define AT803X_DEBUG_ADDR                      0x1D
 #define AT803X_DEBUG_DATA                      0x1E
 #define AT803X_DEBUG_SYSTEM_MODE_CTRL          0x05
@@ -191,6 +194,31 @@ static int at803x_config_init(struct phy_device *phydev)
        return 0;
 }
 
+static int at803x_ack_interrupt(struct phy_device *phydev)
+{
+       int err;
+
+       err = phy_read(phydev, AT803X_INSR);
+
+       return (err < 0) ? err : 0;
+}
+
+static int at803x_config_intr(struct phy_device *phydev)
+{
+       int err;
+       int value;
+
+       value = phy_read(phydev, AT803X_INER);
+
+       if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+               err = phy_write(phydev, AT803X_INER,
+                               value | AT803X_INER_INIT);
+       else
+               err = phy_write(phydev, AT803X_INER, 0);
+
+       return err;
+}
+
 static struct phy_driver at803x_driver[] = {
 {
        /* ATHEROS 8035 */
@@ -240,6 +268,8 @@ static struct phy_driver at803x_driver[] = {
        .flags          = PHY_HAS_INTERRUPT,
        .config_aneg    = genphy_config_aneg,
        .read_status    = genphy_read_status,
+       .ack_interrupt  = &at803x_ack_interrupt,
+       .config_intr    = &at803x_config_intr,
        .driver         = {
                .owner = THIS_MODULE,
        },