From 6561f0e547be221f411fda5eddfcc5bd8bb058a5 Mon Sep 17 00:00:00 2001
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Date: Thu, 5 Dec 2024 09:42:24 +0000
Subject: [PATCH 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@bootlin.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tJ8NM-006L5J-AH@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 drivers/net/pcs/pcs-lynx.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

--- 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 phyl
 }
 
 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,
