netdev - [PATCH net-next 1/3] net: pcs: pcs-lynx: implement pcs_inband

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Message-Id: <E1tJ8NM-006L5J-AH@rmk-PC.armlinux.org.uk>
Date: Thu, 05 Dec 2024 09:42:24 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Ioana Ciornei <ioana.ciornei@....com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: [PATCH net-next 1/3] net: pcs: pcs-lynx: implement pcs_inband_caps()
 method

Report the PCS in-band capabilities to phylink for the Lynx PCS.

Reviewed-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/pcs/pcs-lynx.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
index b79aedad855b..767a8c0714ac 100644
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -35,6 +35,27 @@ enum sgmii_speed {
 #define phylink_pcs_to_lynx(pl_pcs) container_of((pl_pcs), struct lynx_pcs, pcs)
 #define lynx_to_phylink_pcs(lynx) (&(lynx)->pcs)
 
+static unsigned int lynx_pcs_inband_caps(struct phylink_pcs *pcs,
+					 phy_interface_t interface)
+{
+	switch (interface) {
+	case PHY_INTERFACE_MODE_1000BASEX:
+	case PHY_INTERFACE_MODE_SGMII:
+	case PHY_INTERFACE_MODE_QSGMII:
+		return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+	case PHY_INTERFACE_MODE_10GBASER:
+	case PHY_INTERFACE_MODE_2500BASEX:
+		return LINK_INBAND_DISABLE;
+
+	case PHY_INTERFACE_MODE_USXGMII:
+		return LINK_INBAND_ENABLE;
+
+	default:
+		return 0;
+	}
+}
+
 static void lynx_pcs_get_state_usxgmii(struct mdio_device *pcs,
 				       struct phylink_link_state *state)
 {
@@ -306,6 +327,7 @@ static void lynx_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,
 }
 
 static const struct phylink_pcs_ops lynx_pcs_phylink_ops = {
+	.pcs_inband_caps = lynx_pcs_inband_caps,
 	.pcs_get_state = lynx_pcs_get_state,
 	.pcs_config = lynx_pcs_config,
 	.pcs_an_restart = lynx_pcs_an_restart,
-- 
2.30.2