[PATCH RFC net-next v4 07/14] net: stmmac: dwmac1000: move PCS interrupt control

["Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>]

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

This assumes that GMAC_INT_DISABLE_RGMII, GMAC_INT_DISABLE_PCSLINK
and GMAC_INT_DISABLE_PCSAN are all relevant to the PCS.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 .../ethernet/stmicro/stmmac/dwmac1000_core.c  | 33 +++++++++++++++----
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index 66c17be79dec..05b2df08cb0f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -56,12 +56,7 @@ static void dwmac1000_core_init(struct mac_device_info *hw,
 	writel(value, ioaddr + GMAC_CONTROL);
 
 	/* Mask GMAC interrupts */
-	value = GMAC_INT_DEFAULT_MASK;
-
-	if (hw->pcs)
-		value &= ~GMAC_INT_DISABLE_PCS;
-
-	writel(value, ioaddr + GMAC_INT_MASK);
+	writel(GMAC_INT_DEFAULT_MASK, ioaddr + GMAC_INT_MASK);
 
 #ifdef STMMAC_VLAN_TAG_USED
 	/* Tag detection without filtering */
@@ -376,6 +371,30 @@ static void dwmac1000_ctrl_ane(struct stmmac_priv *priv, bool ane,
 	dwmac_ctrl_ane(priv->ioaddr, GMAC_PCS_BASE, ane, srgmi_ral, loopback);
 }
 
+static int dwmac1000_mii_pcs_enable(struct phylink_pcs *pcs)
+{
+	struct stmmac_pcs *spcs = phylink_pcs_to_stmmac_pcs(pcs);
+	void __iomem *ioaddr = spcs->priv->hw->pcsr;
+	u32 intr_mask;
+
+	intr_mask = readl(ioaddr + GMAC_INT_MASK);
+	intr_mask &= ~GMAC_INT_DISABLE_PCS;
+	writel(intr_mask, ioaddr + GMAC_INT_MASK);
+
+	return 0;
+}
+
+static void dwmac1000_mii_pcs_disable(struct phylink_pcs *pcs)
+{
+	struct stmmac_pcs *spcs = phylink_pcs_to_stmmac_pcs(pcs);
+	void __iomem *ioaddr = spcs->priv->hw->pcsr;
+	u32 intr_mask;
+
+	intr_mask = readl(ioaddr + GMAC_INT_MASK);
+	intr_mask |= GMAC_INT_DISABLE_PCS;
+	writel(intr_mask, ioaddr + GMAC_INT_MASK);
+}
+
 static void dwmac1000_mii_pcs_get_state(struct phylink_pcs *pcs,
 					struct phylink_link_state *state)
 {
@@ -386,6 +405,8 @@ static void dwmac1000_mii_pcs_get_state(struct phylink_pcs *pcs,
 }
 
 static const struct phylink_pcs_ops dwmac1000_mii_pcs_ops = {
+	.pcs_enable = dwmac1000_mii_pcs_enable,
+	.pcs_disable = dwmac1000_mii_pcs_disable,
 	.pcs_config = dwmac_pcs_config,
 	.pcs_get_state = dwmac1000_mii_pcs_get_state,
 };
-- 
2.30.2