netdev - [PATCH 07/10] ftgmac100: Open code remaining register writes

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Date:   Tue, 11 Apr 2017 11:04:33 +1000
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     netdev@...r.kernel.org
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH 07/10] ftgmac100: Open code remaining register writes

The helpers just take space but don't provide much value. Simple
one line comments are more explanatory.

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---
 drivers/net/ethernet/faraday/ftgmac100.c | 53 ++++++++++++--------------------
 1 file changed, 20 insertions(+), 33 deletions(-)

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index e92f382..3c7a1e4 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -93,29 +93,6 @@ struct ftgmac100 {
 	bool is_aspeed;
 };
 
-static void ftgmac100_set_rx_ring_base(struct ftgmac100 *priv, dma_addr_t addr)
-{
-	iowrite32(addr, priv->base + FTGMAC100_OFFSET_RXR_BADR);
-}
-
-static void ftgmac100_set_rx_buffer_size(struct ftgmac100 *priv,
-		unsigned int size)
-{
-	size = FTGMAC100_RBSR_SIZE(size);
-	iowrite32(size, priv->base + FTGMAC100_OFFSET_RBSR);
-}
-
-static void ftgmac100_set_normal_prio_tx_ring_base(struct ftgmac100 *priv,
-						   dma_addr_t addr)
-{
-	iowrite32(addr, priv->base + FTGMAC100_OFFSET_NPTXR_BADR);
-}
-
-static void ftgmac100_txdma_normal_prio_start_polling(struct ftgmac100 *priv)
-{
-	iowrite32(1, priv->base + FTGMAC100_OFFSET_NPTXPD);
-}
-
 static int ftgmac100_reset_mac(struct ftgmac100 *priv, u32 maccr)
 {
 	struct net_device *netdev = priv->netdev;
@@ -233,18 +210,27 @@ static int ftgmac100_set_mac_addr(struct net_device *dev, void *p)
 
 static void ftgmac100_init_hw(struct ftgmac100 *priv)
 {
-	/* setup ring buffer base registers */
-	ftgmac100_set_rx_ring_base(priv,
-				   priv->descs_dma_addr +
-				   offsetof(struct ftgmac100_descs, rxdes));
-	ftgmac100_set_normal_prio_tx_ring_base(priv,
-					       priv->descs_dma_addr +
-					       offsetof(struct ftgmac100_descs, txdes));
 
-	ftgmac100_set_rx_buffer_size(priv, RX_BUF_SIZE);
 
-	iowrite32(FTGMAC100_APTC_RXPOLL_CNT(1), priv->base + FTGMAC100_OFFSET_APTC);
+	/* Setup RX ring buffer base */
+	iowrite32(priv->descs_dma_addr +
+		  offsetof(struct ftgmac100_descs, rxdes),
+		  priv->base + FTGMAC100_OFFSET_RXR_BADR);
 
+	/* Setup TX ring buffer base */
+	iowrite32(priv->descs_dma_addr +
+		  offsetof(struct ftgmac100_descs, txdes),
+		  priv->base + FTGMAC100_OFFSET_NPTXR_BADR);
+
+	/* Configure RX buffer size */
+	iowrite32(FTGMAC100_RBSR_SIZE(RX_BUF_SIZE),
+		  priv->base + FTGMAC100_OFFSET_RBSR);
+
+	/* Set RX descriptor autopoll */
+	iowrite32(FTGMAC100_APTC_RXPOLL_CNT(1),
+		  priv->base + FTGMAC100_OFFSET_APTC);
+
+	/* Write MAC address */
 	ftgmac100_write_mac_addr(priv, priv->netdev->dev_addr);
 }
 
@@ -695,7 +681,8 @@ static int ftgmac100_hard_start_xmit(struct sk_buff *skb,
 			netif_wake_queue(netdev);
 	}
 
-	ftgmac100_txdma_normal_prio_start_polling(priv);
+	/* Poke transmitter to read the updated TX descriptors */
+	iowrite32(1, priv->base + FTGMAC100_OFFSET_NPTXPD);
 
 	return NETDEV_TX_OK;
 
-- 
2.9.3