openwrt/target/linux/generic/backport-5.15/705-08-v5.19-net-dsa-mt7530-move-autoneg-handling-to-PCS-validati.patch

From 2b0ee6768f3ac09072e5fd60b36580924e1cfa1c Mon Sep 17 00:00:00 2001
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Date: Mon, 11 Apr 2022 10:46:32 +0100
Subject: [PATCH 08/13] net: dsa: mt7530: move autoneg handling to PCS
 validation
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Move the autoneg bit handling to the PCS validation, which allows us to
get rid of mt753x_phylink_validate() and rely on the default
phylink_generic_validate() implementation for the MAC side.

Tested-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
 drivers/net/dsa/mt7530.c | 28 ++++++++++------------------
 1 file changed, 10 insertions(+), 18 deletions(-)

--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2899,25 +2899,16 @@ static void mt753x_phylink_get_caps(stru
 	priv->info->mac_port_get_caps(ds, port, config);
 }
 
-static void
-mt753x_phylink_validate(struct dsa_switch *ds, int port,
-			unsigned long *supported,
-			struct phylink_link_state *state)
-{
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
-	u32 caps;
-
-	caps = dsa_to_port(ds, port)->pl_config.mac_capabilities;
-
-	phylink_set_port_modes(mask);
-	phylink_get_linkmodes(mask, state->interface, caps);
+static int mt753x_pcs_validate(struct phylink_pcs *pcs,
+			       unsigned long *supported,
+			       const struct phylink_link_state *state)
+{
+	/* Autonegotiation is not supported in TRGMII nor 802.3z modes */
+	if (state->interface == PHY_INTERFACE_MODE_TRGMII ||
+	    phy_interface_mode_is_8023z(state->interface))
+		phylink_clear(supported, Autoneg);
 
-	if (state->interface != PHY_INTERFACE_MODE_TRGMII &&
-	    !phy_interface_mode_is_8023z(state->interface))
-		phylink_set(mask, Autoneg);
-
-	linkmode_and(supported, supported, mask);
-	linkmode_and(state->advertising, state->advertising, mask);
+	return 0;
 }
 
 static void mt7530_pcs_get_state(struct phylink_pcs *pcs,
@@ -3019,12 +3010,14 @@ static void mt7530_pcs_an_restart(struct
 }
 
 static const struct phylink_pcs_ops mt7530_pcs_ops = {
+	.pcs_validate = mt753x_pcs_validate,
 	.pcs_get_state = mt7530_pcs_get_state,
 	.pcs_config = mt753x_pcs_config,
 	.pcs_an_restart = mt7530_pcs_an_restart,
 };
 
 static const struct phylink_pcs_ops mt7531_pcs_ops = {
+	.pcs_validate = mt753x_pcs_validate,
 	.pcs_get_state = mt7531_pcs_get_state,
 	.pcs_config = mt753x_pcs_config,
 	.pcs_an_restart = mt7531_pcs_an_restart,
@@ -3116,7 +3109,6 @@ static const struct dsa_switch_ops mt753
 	.port_mirror_add	= mt753x_port_mirror_add,
 	.port_mirror_del	= mt753x_port_mirror_del,
 	.phylink_get_caps	= mt753x_phylink_get_caps,
-	.phylink_validate	= mt753x_phylink_validate,
 	.phylink_mac_select_pcs	= mt753x_phylink_mac_select_pcs,
 	.phylink_mac_config	= mt753x_phylink_mac_config,
 	.phylink_mac_link_down	= mt753x_phylink_mac_link_down,