fec: refactor init function

fec_enet_init() does the hardware initialisation and then calls
fec_restart() which does the same initialisation again, so we
can safely remove the initialisation from fec_enet_init().
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/fec.c

@@ -1615,10 +1615,6 @@ int __init fec_enet_init(struct net_device *dev, int index)
 	fep->hwp = (void __iomem *)dev->base_addr;
 	fep->netdev = dev;
 
-	/* Whack a reset.  We should wait for this. */
-	writel(1, fep->hwp + FEC_ECNTRL);
-	udelay(10);
-
 	/* Set the Ethernet address */
 #ifdef CONFIG_M5272
 	fec_get_mac(dev);
@@ -1640,11 +1636,6 @@ int __init fec_enet_init(struct net_device *dev, int index)
 	fep->rx_bd_base = cbd_base;
 	fep->tx_bd_base = cbd_base + RX_RING_SIZE;
 
-	fep->dirty_tx = fep->cur_tx = fep->tx_bd_base;
-	fep->cur_rx = fep->rx_bd_base;
-
-	fep->skb_cur = fep->skb_dirty = 0;
-
 	/* Initialize the receive buffer descriptors. */
 	bdp = fep->rx_bd_base;
 	for (i=0; i<FEC_ENET_RX_PAGES; i++) {
@@ -1688,25 +1679,9 @@ int __init fec_enet_init(struct net_device *dev, int index)
 	bdp--;
 	bdp->cbd_sc |= BD_SC_WRAP;
 
-	/* Set receive and transmit descriptor base */
-	writel(fep->bd_dma, fep->hwp + FEC_R_DES_START);
-	writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) * RX_RING_SIZE,
-			fep->hwp + FEC_X_DES_START);
-
 #ifdef HAVE_mii_link_interrupt
 	fec_request_mii_intr(dev);
 #endif
-
-	writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
-	writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
-	writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);
-	writel(2, fep->hwp + FEC_ECNTRL);
-	writel(0, fep->hwp + FEC_R_DES_ACTIVE);
-#ifndef CONFIG_M5272
-	writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
-	writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
-#endif
-
 	/* The FEC Ethernet specific entries in the device structure */
 	dev->open = fec_enet_open;
 	dev->hard_start_xmit = fec_enet_start_xmit;
@@ -1719,21 +1694,11 @@ int __init fec_enet_init(struct net_device *dev, int index)
 		mii_cmds[i].mii_next = &mii_cmds[i+1];
 	mii_free = mii_cmds;
 
-	/* setup MII interface */
-	writel(OPT_FRAME_SIZE | 0x04, fep->hwp + FEC_R_CNTRL);
-	writel(0, fep->hwp + FEC_X_CNTRL);
-
 	/* Set MII speed to 2.5 MHz */
 	fep->phy_speed = ((((clk_get_rate(fep->clk) / 2 + 4999999)
 					/ 2500000) / 2) & 0x3F) << 1;
-	writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
 	fec_restart(dev, 0);
 
-	/* Clear and enable interrupts */
-	writel(0xffc00000, fep->hwp + FEC_IEVENT);
-	writel(FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII,
-			fep->hwp + FEC_IMASK);
-
 	/* Queue up command to detect the PHY and initialize the
 	 * remainder of the interface.
 	 */
@@ -1768,6 +1733,10 @@ fec_restart(struct net_device *dev, int duplex)
 	/* Reset all multicast.	*/
 	writel(0, fep->hwp + FEC_GRP_HASH_TABLE_HIGH);
 	writel(0, fep->hwp + FEC_GRP_HASH_TABLE_LOW);
+#ifndef CONFIG_M5272
+	writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
+	writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
+#endif
 
 	/* Set maximum receive buffer size. */
 	writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE);