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Date:   Thu, 28 May 2020 17:45:03 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Fabien Parent <fparent@...libre.com>,
        Stephane Le Provost <stephane.leprovost@...iatek.com>,
        Pedro Tsai <pedro.tsai@...iatek.com>,
        Andrew Perepech <andrew.perepech@...iatek.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH v3 2/2] net: ethernet: mtk-star-emac: use regmap bitops

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

Shrink the code visually by replacing regmap_update_bits() with
appropriate regmap bit operations where applicable.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/net/ethernet/mediatek/mtk_star_emac.c | 80 ++++++++-----------
 1 file changed, 35 insertions(+), 45 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_star_emac.c b/drivers/net/ethernet/mediatek/mtk_star_emac.c
index 8596ca0e60eb..326ac792a4a0 100644
--- a/drivers/net/ethernet/mediatek/mtk_star_emac.c
+++ b/drivers/net/ethernet/mediatek/mtk_star_emac.c
@@ -413,8 +413,8 @@ static void mtk_star_dma_unmap_tx(struct mtk_star_priv *priv,
 
 static void mtk_star_nic_disable_pd(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
-			   MTK_STAR_BIT_MAC_CFG_NIC_PD, 0);
+	regmap_clear_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
+			  MTK_STAR_BIT_MAC_CFG_NIC_PD);
 }
 
 /* Unmask the three interrupts we care about, mask all others. */
@@ -434,41 +434,38 @@ static void mtk_star_intr_disable(struct mtk_star_priv *priv)
 
 static void mtk_star_intr_enable_tx(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
-			   MTK_STAR_BIT_INT_STS_TNTC, 0);
+	regmap_clear_bits(priv->regs, MTK_STAR_REG_INT_MASK,
+			  MTK_STAR_BIT_INT_STS_TNTC);
 }
 
 static void mtk_star_intr_enable_rx(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
-			   MTK_STAR_BIT_INT_STS_FNRC, 0);
+	regmap_clear_bits(priv->regs, MTK_STAR_REG_INT_MASK,
+			  MTK_STAR_BIT_INT_STS_FNRC);
 }
 
 static void mtk_star_intr_enable_stats(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
-			   MTK_STAR_REG_INT_STS_MIB_CNT_TH, 0);
+	regmap_clear_bits(priv->regs, MTK_STAR_REG_INT_MASK,
+			  MTK_STAR_REG_INT_STS_MIB_CNT_TH);
 }
 
 static void mtk_star_intr_disable_tx(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
-			   MTK_STAR_BIT_INT_STS_TNTC,
-			   MTK_STAR_BIT_INT_STS_TNTC);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_INT_MASK,
+			MTK_STAR_BIT_INT_STS_TNTC);
 }
 
 static void mtk_star_intr_disable_rx(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
-			   MTK_STAR_BIT_INT_STS_FNRC,
-			   MTK_STAR_BIT_INT_STS_FNRC);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_INT_MASK,
+			MTK_STAR_BIT_INT_STS_FNRC);
 }
 
 static void mtk_star_intr_disable_stats(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_INT_MASK,
-			   MTK_STAR_REG_INT_STS_MIB_CNT_TH,
-			   MTK_STAR_REG_INT_STS_MIB_CNT_TH);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_INT_MASK,
+			MTK_STAR_REG_INT_STS_MIB_CNT_TH);
 }
 
 static unsigned int mtk_star_intr_read(struct mtk_star_priv *priv)
@@ -524,12 +521,10 @@ static void mtk_star_dma_init(struct mtk_star_priv *priv)
 
 static void mtk_star_dma_start(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
-			   MTK_STAR_BIT_TX_DMA_CTRL_START,
-			   MTK_STAR_BIT_TX_DMA_CTRL_START);
-	regmap_update_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
-			   MTK_STAR_BIT_RX_DMA_CTRL_START,
-			   MTK_STAR_BIT_RX_DMA_CTRL_START);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
+			MTK_STAR_BIT_TX_DMA_CTRL_START);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
+			MTK_STAR_BIT_RX_DMA_CTRL_START);
 }
 
 static void mtk_star_dma_stop(struct mtk_star_priv *priv)
@@ -553,16 +548,14 @@ static void mtk_star_dma_disable(struct mtk_star_priv *priv)
 
 static void mtk_star_dma_resume_rx(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
-			   MTK_STAR_BIT_RX_DMA_CTRL_RESUME,
-			   MTK_STAR_BIT_RX_DMA_CTRL_RESUME);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_RX_DMA_CTRL,
+			MTK_STAR_BIT_RX_DMA_CTRL_RESUME);
 }
 
 static void mtk_star_dma_resume_tx(struct mtk_star_priv *priv)
 {
-	regmap_update_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
-			   MTK_STAR_BIT_TX_DMA_CTRL_RESUME,
-			   MTK_STAR_BIT_TX_DMA_CTRL_RESUME);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_TX_DMA_CTRL,
+			MTK_STAR_BIT_TX_DMA_CTRL_RESUME);
 }
 
 static void mtk_star_set_mac_addr(struct net_device *ndev)
@@ -845,8 +838,8 @@ static int mtk_star_hash_wait_ok(struct mtk_star_priv *priv)
 		return ret;
 
 	/* Check the BIST_OK bit. */
-	regmap_read(priv->regs, MTK_STAR_REG_HASH_CTRL, &val);
-	if (!(val & MTK_STAR_BIT_HASH_CTRL_BIST_OK))
+	if (!regmap_test_bits(priv->regs, MTK_STAR_REG_HASH_CTRL,
+			      MTK_STAR_BIT_HASH_CTRL_BIST_OK))
 		return -EIO;
 
 	return 0;
@@ -880,12 +873,10 @@ static int mtk_star_reset_hash_table(struct mtk_star_priv *priv)
 	if (ret)
 		return ret;
 
-	regmap_update_bits(priv->regs, MTK_STAR_REG_HASH_CTRL,
-			   MTK_STAR_BIT_HASH_CTRL_BIST_EN,
-			   MTK_STAR_BIT_HASH_CTRL_BIST_EN);
-	regmap_update_bits(priv->regs, MTK_STAR_REG_TEST1,
-			   MTK_STAR_BIT_TEST1_RST_HASH_MBIST,
-			   MTK_STAR_BIT_TEST1_RST_HASH_MBIST);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_HASH_CTRL,
+			MTK_STAR_BIT_HASH_CTRL_BIST_EN);
+	regmap_set_bits(priv->regs, MTK_STAR_REG_TEST1,
+			MTK_STAR_BIT_TEST1_RST_HASH_MBIST);
 
 	return mtk_star_hash_wait_ok(priv);
 }
@@ -1016,13 +1007,13 @@ static int mtk_star_enable(struct net_device *ndev)
 		return ret;
 
 	/* Setup the hashing algorithm */
-	regmap_update_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
-			   MTK_STAR_BIT_ARL_CFG_HASH_ALG |
-			   MTK_STAR_BIT_ARL_CFG_MISC_MODE, 0);
+	regmap_clear_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
+			  MTK_STAR_BIT_ARL_CFG_HASH_ALG |
+			  MTK_STAR_BIT_ARL_CFG_MISC_MODE);
 
 	/* Don't strip VLAN tags */
-	regmap_update_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
-			   MTK_STAR_BIT_MAC_CFG_VLAN_STRIP, 0);
+	regmap_clear_bits(priv->regs, MTK_STAR_REG_MAC_CFG,
+			  MTK_STAR_BIT_MAC_CFG_VLAN_STRIP);
 
 	/* Setup DMA */
 	mtk_star_dma_init(priv);
@@ -1204,9 +1195,8 @@ static void mtk_star_set_rx_mode(struct net_device *ndev)
 	int ret;
 
 	if (ndev->flags & IFF_PROMISC) {
-		regmap_update_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
-				   MTK_STAR_BIT_ARL_CFG_MISC_MODE,
-				   MTK_STAR_BIT_ARL_CFG_MISC_MODE);
+		regmap_set_bits(priv->regs, MTK_STAR_REG_ARL_CFG,
+				MTK_STAR_BIT_ARL_CFG_MISC_MODE);
 	} else if (netdev_mc_count(ndev) > MTK_STAR_HASHTABLE_MC_LIMIT ||
 		   ndev->flags & IFF_ALLMULTI) {
 		for (i = 0; i < MTK_STAR_HASHTABLE_SIZE_MAX; i++) {
-- 
2.26.1

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