[net v2] net: ftgmac100: refactor getting phy device handle

[Jacky Chou <jacky_chou@aspeedtech.com>]

The ftgmac100 supports NC-SI mode, dedicated PHY and fixed-link
PHY. The dedicated PHY is using the phy_handle property to get
phy device handle and the fixed-link phy is using the fixed-link
property to register a fixed-link phy device.

In of_phy_get_and_connect function, it help driver to get and register
these PHYs handle.
Therefore, here refactors this part by using of_phy_get_and_connect.

Signed-off-by: Jacky Chou <jacky_chou@aspeedtech.com>
---
v2:
  - enable mac asym pause support for fixed-link PHY
  - remove fixes information
---
 drivers/net/ethernet/faraday/ftgmac100.c | 28 +++++-------------------
 1 file changed, 5 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 0b61f548fd18..8f4093f6d289 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1918,35 +1918,17 @@ static int ftgmac100_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev, "Connecting PHY failed\n");
 			goto err_phy_connect;
 		}
-	} else if (np && of_phy_is_fixed_link(np)) {
-		struct phy_device *phy;
-
-		err = of_phy_register_fixed_link(np);
-		if (err) {
-			dev_err(&pdev->dev, "Failed to register fixed PHY\n");
-			goto err_phy_connect;
-		}
-
-		phy = of_phy_get_and_connect(priv->netdev, np,
-					     &ftgmac100_adjust_link);
-		if (!phy) {
-			dev_err(&pdev->dev, "Failed to connect to fixed PHY\n");
-			of_phy_deregister_fixed_link(np);
-			err = -EINVAL;
-			goto err_phy_connect;
-		}
-
-		/* Display what we found */
-		phy_attached_info(phy);
-	} else if (np && of_get_property(np, "phy-handle", NULL)) {
+	} else if (np && (of_phy_is_fixed_link(np) ||
+			  of_get_property(np, "phy-handle", NULL))) {
 		struct phy_device *phy;
 
 		/* Support "mdio"/"phy" child nodes for ast2400/2500 with
 		 * an embedded MDIO controller. Automatically scan the DTS for
 		 * available PHYs and register them.
 		 */
-		if (of_device_is_compatible(np, "aspeed,ast2400-mac") ||
-		    of_device_is_compatible(np, "aspeed,ast2500-mac")) {
+		if (of_get_property(np, "phy-handle", NULL) &&
+		    (of_device_is_compatible(np, "aspeed,ast2400-mac") ||
+		     of_device_is_compatible(np, "aspeed,ast2500-mac"))) {
 			err = ftgmac100_setup_mdio(netdev);
 			if (err)
 				goto err_setup_mdio;
-- 
2.25.1