netdev - [PATCH RFC net-next v2 6/8] net: stmmac: dwmac4: move PCS interrupt control

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Date: Fri, 31 May 2024 12:26:40 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Serge Semin <fancer.lancer@...il.com>
Cc: Andrew Halaney <ahalaney@...hat.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Jose Abreu <joabreu@...opsys.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH RFC net-next v2 6/8] net: stmmac: dwmac4: move PCS interrupt
 control

Control the PCS interrupt mask from the phylink pcs_enable() and
pcs_disable() methods rather than relying on driver variables.

This assumes that GMAC_INT_RGSMIIS, GMAC_INT_PCS_LINK and
GMAC_INT_PCS_ANE are all relevant to the PCS.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/dwmac4_core.c | 29 +++++++++++++++++--
 1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index cb99cb69c52b..5cf2a6cb8f66 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -56,9 +56,6 @@ static void dwmac4_core_init(struct mac_device_info *hw,
 	/* Enable GMAC interrupts */
 	value = GMAC_INT_DEFAULT_ENABLE;
 
-	if (hw->pcs)
-		value |= GMAC_PCS_IRQ_DEFAULT;
-
 	/* Enable FPE interrupt */
 	if ((GMAC_HW_FEAT_FPESEL & readl(ioaddr + GMAC_HW_FEATURE3)) >> 26)
 		value |= GMAC_INT_FPE_EN;
@@ -770,6 +767,30 @@ static int dwmac4_mii_pcs_validate(struct phylink_pcs *pcs,
 	return 0;
 }
 
+static int dwmac4_mii_pcs_enable(struct phylink_pcs *pcs)
+{
+	struct mac_device_info *hw = phylink_pcs_to_mac_dev_info(pcs);
+	void __iomem *ioaddr = hw->pcsr;
+	u32 intr_enable;
+
+	intr_enable = readl(ioaddr + GMAC_INT_EN);
+	intr_enable |= GMAC_PCS_IRQ_DEFAULT;
+	writel(intr_enable, ioaddr + GMAC_INT_EN);
+
+	return 0;
+}
+
+static void dwmac4_mii_pcs_disable(struct phylink_pcs *pcs)
+{
+	struct mac_device_info *hw = phylink_pcs_to_mac_dev_info(pcs);
+	void __iomem *ioaddr = hw->pcsr;
+	u32 intr_enable;
+
+	intr_enable = readl(ioaddr + GMAC_INT_EN);
+	intr_enable &= ~GMAC_PCS_IRQ_DEFAULT;
+	writel(intr_enable, ioaddr + GMAC_INT_EN);
+}
+
 static int dwmac4_mii_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
 				 phy_interface_t interface,
 				 const unsigned long *advertising,
@@ -817,6 +838,8 @@ static void dwmac4_mii_pcs_get_state(struct phylink_pcs *pcs,
 
 static const struct phylink_pcs_ops dwmac4_mii_pcs_ops = {
 	.pcs_validate = dwmac4_mii_pcs_validate,
+	.pcs_enable = dwmac4_mii_pcs_enable,
+	.pcs_disable = dwmac4_mii_pcs_disable,
 	.pcs_config = dwmac4_mii_pcs_config,
 	.pcs_get_state = dwmac4_mii_pcs_get_state,
 };
-- 
2.30.2