net: dsa: microchip: ksz8795: move cpu_select_interface to extra function

This patch moves the cpu interface selection code to a individual
function specific for ksz8795. It will make it simpler to customize the
code path for different switches supported by this driver.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 91297df..85fb727 100644 (file)
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -909,10 +909,58 @@ static void ksz8_port_mirror_del(struct dsa_switch *ds, int port,
                             PORT_MIRROR_SNIFFER, false);
 }
 
+static void ksz8795_cpu_interface_select(struct ksz_device *dev, int port)
+{
+       struct ksz_port *p = &dev->ports[port];
+       u8 data8;
+
+       if (!p->interface && dev->compat_interface) {
+               dev_warn(dev->dev,
+                        "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. "
+                        "Please update your device tree.\n",
+                        port);
+               p->interface = dev->compat_interface;
+       }
+
+       /* Configure MII interface for proper network communication. */
+       ksz_read8(dev, REG_PORT_5_CTRL_6, &data8);
+       data8 &= ~PORT_INTERFACE_TYPE;
+       data8 &= ~PORT_GMII_1GPS_MODE;
+       switch (p->interface) {
+       case PHY_INTERFACE_MODE_MII:
+               p->phydev.speed = SPEED_100;
+               break;
+       case PHY_INTERFACE_MODE_RMII:
+               data8 |= PORT_INTERFACE_RMII;
+               p->phydev.speed = SPEED_100;
+               break;
+       case PHY_INTERFACE_MODE_GMII:
+               data8 |= PORT_GMII_1GPS_MODE;
+               data8 |= PORT_INTERFACE_GMII;
+               p->phydev.speed = SPEED_1000;
+               break;
+       default:
+               data8 &= ~PORT_RGMII_ID_IN_ENABLE;
+               data8 &= ~PORT_RGMII_ID_OUT_ENABLE;
+               if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+                   p->interface == PHY_INTERFACE_MODE_RGMII_RXID)
+                       data8 |= PORT_RGMII_ID_IN_ENABLE;
+               if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+                   p->interface == PHY_INTERFACE_MODE_RGMII_TXID)
+                       data8 |= PORT_RGMII_ID_OUT_ENABLE;
+               data8 |= PORT_GMII_1GPS_MODE;
+               data8 |= PORT_INTERFACE_RGMII;
+               p->phydev.speed = SPEED_1000;
+               break;
+       }
+       ksz_write8(dev, REG_PORT_5_CTRL_6, data8);
+       p->phydev.duplex = 1;
+}
+
 static void ksz8_port_setup(struct ksz_device *dev, int port, bool cpu_port)
 {
        struct ksz_port *p = &dev->ports[port];
-       u8 data8, member;
+       u8 member;
 
        /* enable broadcast storm limit */
        ksz_port_cfg(dev, port, P_BCAST_STORM_CTRL, PORT_BROADCAST_STORM, true);
@@ -929,47 +977,7 @@ static void ksz8_port_setup(struct ksz_device *dev, int port, bool cpu_port)
        ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_ENABLE, true);
 
        if (cpu_port) {
-               if (!p->interface && dev->compat_interface) {
-                       dev_warn(dev->dev,
-                                "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. "
-                                "Please update your device tree.\n",
-                                port);
-                       p->interface = dev->compat_interface;
-               }
-
-               /* Configure MII interface for proper network communication. */
-               ksz_read8(dev, REG_PORT_5_CTRL_6, &data8);
-               data8 &= ~PORT_INTERFACE_TYPE;
-               data8 &= ~PORT_GMII_1GPS_MODE;
-               switch (p->interface) {
-               case PHY_INTERFACE_MODE_MII:
-                       p->phydev.speed = SPEED_100;
-                       break;
-               case PHY_INTERFACE_MODE_RMII:
-                       data8 |= PORT_INTERFACE_RMII;
-                       p->phydev.speed = SPEED_100;
-                       break;
-               case PHY_INTERFACE_MODE_GMII:
-                       data8 |= PORT_GMII_1GPS_MODE;
-                       data8 |= PORT_INTERFACE_GMII;
-                       p->phydev.speed = SPEED_1000;
-                       break;
-               default:
-                       data8 &= ~PORT_RGMII_ID_IN_ENABLE;
-                       data8 &= ~PORT_RGMII_ID_OUT_ENABLE;
-                       if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
-                           p->interface == PHY_INTERFACE_MODE_RGMII_RXID)
-                               data8 |= PORT_RGMII_ID_IN_ENABLE;
-                       if (p->interface == PHY_INTERFACE_MODE_RGMII_ID ||
-                           p->interface == PHY_INTERFACE_MODE_RGMII_TXID)
-                               data8 |= PORT_RGMII_ID_OUT_ENABLE;
-                       data8 |= PORT_GMII_1GPS_MODE;
-                       data8 |= PORT_INTERFACE_RGMII;
-                       p->phydev.speed = SPEED_1000;
-                       break;
-               }
-               ksz_write8(dev, REG_PORT_5_CTRL_6, data8);
-               p->phydev.duplex = 1;
+               ksz8795_cpu_interface_select(dev, port);
 
                member = dev->port_mask;
        } else {