[PATCH net-next 01/11] r8152: add r8153_phy_status function

[Hayes Wang]

Use r8153_phy_status() to check phy status of RTL8153.

Signed-off-by: Hayes Wang <hayesw...@realtek.com>
---
 drivers/net/usb/r8152.c | 37 +++++++++++++++++++++++++------------
 1 file changed, 25 insertions(+), 12 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index fd31fab..9239dfb 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -394,6 +394,7 @@
 
 /* OCP_PHY_STATUS */
 #define PHY_STAT_MASK          0x0007
+#define PHY_STAT_EXT_INIT      2
 #define PHY_STAT_LAN_ON                3
 #define PHY_STAT_PWRDN         5
 
@@ -2452,6 +2453,28 @@ static void r8153_u2p3en(struct r8152 *tp, bool enable)
        ocp_write_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL, ocp_data);
 }
 
+static u16 r8153_phy_status(struct r8152 *tp, u16 desired)
+{
+       u16 data;
+       int i;
+
+       for (i = 0; i < 500; i++) {
+               data = ocp_reg_read(tp, OCP_PHY_STATUS);
+               data &= PHY_STAT_MASK;
+               if (desired) {
+                       if (data == desired)
+                               break;
+               } else if (data == PHY_STAT_LAN_ON || data == PHY_STAT_PWRDN ||
+                          data == PHY_STAT_EXT_INIT) {
+                       break;
+               }
+
+               msleep(20);
+       }
+
+       return data;
+}
+
 static void r8153_power_cut_en(struct r8152 *tp, bool enable)
 {
        u32 ocp_data;
@@ -3420,12 +3443,7 @@ static void r8153_init(struct r8152 *tp)
                msleep(20);
        }
 
-       for (i = 0; i < 500; i++) {
-               ocp_data = ocp_reg_read(tp, OCP_PHY_STATUS) & PHY_STAT_MASK;
-               if (ocp_data == PHY_STAT_LAN_ON || ocp_data == PHY_STAT_PWRDN)
-                       break;
-               msleep(20);
-       }
+       data = r8153_phy_status(tp, 0);
 
        if (tp->version == RTL_VER_03 || tp->version == RTL_VER_04 ||
            tp->version == RTL_VER_05)
@@ -3437,12 +3455,7 @@ static void r8153_init(struct r8152 *tp)
                r8152_mdio_write(tp, MII_BMCR, data);
        }
 
-       for (i = 0; i < 500; i++) {
-               ocp_data = ocp_reg_read(tp, OCP_PHY_STATUS) & PHY_STAT_MASK;
-               if (ocp_data == PHY_STAT_LAN_ON)
-                       break;
-               msleep(20);
-       }
+       data = r8153_phy_status(tp, PHY_STAT_LAN_ON);
 
        usb_disable_lpm(tp->udev);
        r8153_u2p3en(tp, false);
-- 
2.7.4