netdev - [PATCH net-next v4 17/18] net: stmmac: split hardware LPI timer control

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Message-Id: <E1tVZEl-0002LK-LA@rmk-PC.armlinux.org.uk>
Date: Wed, 08 Jan 2025 16:48:55 +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>,
	Jose Abreu <joabreu@...opsys.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>
Subject: [PATCH net-next v4 17/18] net: stmmac: split hardware LPI timer
 control

Provide stmmac_disable_hw_lpi_timer() and stmmac_enable_hw_lpi_timer()
to control the hardware transmit LPI timer.

Reviewed-by: Andrew Lunn <andrew@...n.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c  | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 6d01dcafaf15..05fee963c1c4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -390,14 +390,24 @@ static inline u32 stmmac_rx_dirty(struct stmmac_priv *priv, u32 queue)
 	return dirty;
 }
 
-static void stmmac_lpi_entry_timer_config(struct stmmac_priv *priv, bool en)
+static void stmmac_disable_hw_lpi_timer(struct stmmac_priv *priv)
+{
+	stmmac_set_eee_lpi_timer(priv, priv->hw, 0);
+}
+
+static void stmmac_enable_hw_lpi_timer(struct stmmac_priv *priv)
 {
-	u32 tx_lpi_timer;
+	stmmac_set_eee_lpi_timer(priv, priv->hw, priv->tx_lpi_timer);
+}
 
+static void stmmac_lpi_entry_timer_config(struct stmmac_priv *priv, bool en)
+{
 	/* Clear/set the SW EEE timer flag based on LPI ET enablement */
 	priv->eee_sw_timer_en = en ? 0 : 1;
-	tx_lpi_timer = en ? priv->tx_lpi_timer : 0;
-	stmmac_set_eee_lpi_timer(priv, priv->hw, tx_lpi_timer);
+	if (en)
+		stmmac_enable_hw_lpi_timer(priv);
+	else
+		stmmac_disable_hw_lpi_timer(priv);
 }
 
 /**
-- 
2.30.2