netdev - [PATCH RFC net-next 1/4] net: mtk_eth_soc: tidy mtk_gmac0_rgmii

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Message-Id: <E1pVXJ5-00CT9m-CT@rmk-PC.armlinux.org.uk>
Date:   Fri, 24 Feb 2023 12:36:11 +0000
From:   "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To:     Daniel Golle <daniel@...rotopia.org>,
        Daniel Golle <daniel@...rotopia.org>
Cc:     Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH RFC net-next 1/4] net: mtk_eth_soc: tidy
 mtk_gmac0_rgmii_adjust()

Get rid of the multiple tenary operators in mtk_gmac0_rgmii_adjust()
replacing them with a single if(), thus making the code easier to read.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 34 ++++++++++++---------
 1 file changed, 19 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 14be6ea51b88..c63f17929ccf 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -397,38 +397,42 @@ static int mt7621_gmac0_rgmii_adjust(struct mtk_eth *eth,
 static void mtk_gmac0_rgmii_adjust(struct mtk_eth *eth,
 				   phy_interface_t interface, int speed)
 {
-	u32 val;
+	unsigned long rate;
+	u32 tck, rck, intf;
 	int ret;
 
 	if (interface == PHY_INTERFACE_MODE_TRGMII) {
 		mtk_w32(eth, TRGMII_MODE, INTF_MODE);
-		val = 500000000;
-		ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val);
+		ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], 500000000);
 		if (ret)
 			dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret);
 		return;
 	}
 
-	val = (speed == SPEED_1000) ?
-		INTF_MODE_RGMII_1000 : INTF_MODE_RGMII_10_100;
-	mtk_w32(eth, val, INTF_MODE);
+	if (speed == SPEED_1000) {
+		intf = INTF_MODE_RGMII_1000;
+		rate = 250000000;
+		rck = RCK_CTRL_RGMII_1000;
+		tck = TCK_CTRL_RGMII_1000;
+	} else {
+		intf = INTF_MODE_RGMII_10_100;
+		rate = 500000000;
+		rck = RCK_CTRL_RGMII_10_100;
+		tck = TCK_CTRL_RGMII_10_100;
+	}
+
+	mtk_w32(eth, intf, INTF_MODE);
 
 	regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0,
 			   ETHSYS_TRGMII_CLK_SEL362_5,
 			   ETHSYS_TRGMII_CLK_SEL362_5);
 
-	val = (speed == SPEED_1000) ? 250000000 : 500000000;
-	ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val);
+	ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], rate);
 	if (ret)
 		dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret);
 
-	val = (speed == SPEED_1000) ?
-		RCK_CTRL_RGMII_1000 : RCK_CTRL_RGMII_10_100;
-	mtk_w32(eth, val, TRGMII_RCK_CTRL);
-
-	val = (speed == SPEED_1000) ?
-		TCK_CTRL_RGMII_1000 : TCK_CTRL_RGMII_10_100;
-	mtk_w32(eth, val, TRGMII_TCK_CTRL);
+	mtk_w32(eth, rck, TRGMII_RCK_CTRL);
+	mtk_w32(eth, tck, TRGMII_TCK_CTRL);
 }
 
 static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config,
-- 
2.30.2