driver: ldpaa: Add api to return linked PHY ID of DPMAC

DPMAC represents physical line on the board. This physical
line eventually asscociate with on-board PHY.

So Add an api to return linked PHY ID of DPMAC object.
Signed-off-by: NPrabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: NYork Sun <yorksun@freescale.com>

drivers/net/ldpaa_eth/ldpaa_wriop.c

@@ -26,6 +26,7 @@ void wriop_init_dpmac(int sd, int dpmac_id, int lane_prtcl)
 
 	dpmac_info[dpmac_id].enabled = 0;
 	dpmac_info[dpmac_id].id = 0;
+	dpmac_info[dpmac_id].phy_addr = -1;
 	dpmac_info[dpmac_id].enet_if = PHY_INTERFACE_MODE_NONE;
 
 	enet_if = wriop_dpmac_enet_if(dpmac_id, lane_prtcl);
@@ -71,6 +72,17 @@ void wriop_enable_dpmac(int dpmac_id)
 	wriop_dpmac_enable(dpmac_id);
 }
 
+u8 wriop_is_enabled_dpmac(int dpmac_id)
+{
+	int i = wriop_dpmac_to_index(dpmac_id);
+
+	if (i == -1)
+		return -1;
+
+	return dpmac_info[i].enabled;
+}
+
+
 void wriop_set_mdio(int dpmac_id, struct mii_dev *bus)
 {
 	int i = wriop_dpmac_to_index(dpmac_id);

include/fsl-mc/ldpaa_wriop.h

@@ -40,8 +40,8 @@ enum wriop_port {
 struct wriop_dpmac_info {
 	u8 enabled;
 	u8 id;
-	u8 phy_addr;
 	u8 board_mux;
+	int phy_addr;
 	void *phy_regs;
 	phy_interface_t enet_if;
 	struct phy_device *phydev;
@@ -56,6 +56,7 @@ extern struct wriop_dpmac_info dpmac_info[NUM_WRIOP_PORTS];
 void wriop_init_dpmac(int, int, int);
 void wriop_disable_dpmac(int);
 void wriop_enable_dpmac(int);
+u8 wriop_is_enabled_dpmac(int dpmac_id);
 void wriop_set_mdio(int, struct mii_dev *);
 struct mii_dev *wriop_get_mdio(int);
 void wriop_set_phy_address(int, int);