netdev - [PATCH RFC net-next 4/5] net: stmmac: remove _RE and _TE in (start|stop)

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Message-Id: <E1tnfRt-0057SR-Hx@rmk-PC.armlinux.org.uk>
Date: Thu, 27 Feb 2025 15:05:17 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Jon Hunter <jonathanh@...dia.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Thierry Reding <treding@...dia.com>
Subject: [PATCH RFC net-next 4/5] net: stmmac: remove _RE and _TE in
 (start|stop)_(tx|rx)() methods

Remove fiddling with _TE and _RE in the GMAC control register in the
start_tx/stop_tx/start_rx/stop_rx() methods as this should be handled
by phylink and not during initialisation.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c   |  8 --------
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 12 ------------
 2 files changed, 20 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
index 57c03d491774..61584b569be7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
@@ -50,10 +50,6 @@ void dwmac4_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
 
 	value |= DMA_CONTROL_ST;
 	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
-
-	value = readl(ioaddr + GMAC_CONFIG);
-	value |= GMAC_CONFIG_TE;
-	writel(value, ioaddr + GMAC_CONFIG);
 }
 
 void dwmac4_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
@@ -77,10 +73,6 @@ void dwmac4_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
 	value |= DMA_CONTROL_SR;
 
 	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
-
-	value = readl(ioaddr + GMAC_CONFIG);
-	value |= GMAC_CONFIG_RE;
-	writel(value, ioaddr + GMAC_CONFIG);
 }
 
 void dwmac4_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 7840bc403788..cba12edc1477 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -288,10 +288,6 @@ static void dwxgmac2_dma_start_tx(struct stmmac_priv *priv,
 	value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
 	value |= XGMAC_TXST;
 	writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
-
-	value = readl(ioaddr + XGMAC_TX_CONFIG);
-	value |= XGMAC_CONFIG_TE;
-	writel(value, ioaddr + XGMAC_TX_CONFIG);
 }
 
 static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
@@ -302,10 +298,6 @@ static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
 	value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
 	value &= ~XGMAC_TXST;
 	writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
-
-	value = readl(ioaddr + XGMAC_TX_CONFIG);
-	value &= ~XGMAC_CONFIG_TE;
-	writel(value, ioaddr + XGMAC_TX_CONFIG);
 }
 
 static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv,
@@ -316,10 +308,6 @@ static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv,
 	value = readl(ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
 	value |= XGMAC_RXST;
 	writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
-
-	value = readl(ioaddr + XGMAC_RX_CONFIG);
-	value |= XGMAC_CONFIG_RE;
-	writel(value, ioaddr + XGMAC_RX_CONFIG);
 }
 
 static void dwxgmac2_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
-- 
2.30.2