net: remove phylink_pcs .neg_mode boolean

As all PCS are using the neg_mode parameter rather than the legacy
an_mode, remove the ability to use the legacy an_mode. We remove the
tests in the phylink code, unconditionally passing the PCS neg_mode
parameter to PCS methods, and remove setting the flag from drivers.

Signed-off-by: Russell King (Oracle) <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/dsa/b53/b53_serdes.c

···
 	pcs->dev = dev;
 	pcs->lane = lane;
 	pcs->pcs.ops = &b53_pcs_ops;
-	pcs->pcs.neg_mode = true;
 
 	return 0;
 }

drivers/net/dsa/mt7530.c

···
 	/* Initialise the PCS devices */
 	for (i = 0; i < priv->ds->num_ports; i++) {
 		priv->pcs[i].pcs.ops = priv->info->pcs_ops;
-		priv->pcs[i].pcs.neg_mode = true;
 		priv->pcs[i].priv = priv;
 		priv->pcs[i].port = i;
 	}

drivers/net/dsa/mv88e6xxx/pcs-6185.c

···
 	mpcs->chip = chip;
 	mpcs->port = port;
 	mpcs->phylink_pcs.ops = &mv88e6185_phylink_pcs_ops;
-	mpcs->phylink_pcs.neg_mode = true;
 
 	irq = mv88e6xxx_serdes_irq_mapping(chip, port);
 	if (irq) {

drivers/net/dsa/mv88e6xxx/pcs-6352.c

···
 	mpcs->mdio.bus = bus;
 	mpcs->mdio.addr = addr;
 	mpcs->phylink_pcs.ops = &marvell_c22_pcs_ops;
-	mpcs->phylink_pcs.neg_mode = true;
 
 	return mpcs;
 }

drivers/net/dsa/mv88e6xxx/pcs-639x.c

···
 		return -ENOMEM;
 
 	mpcs->sgmii_pcs.ops = &mv88e639x_sgmii_pcs_ops;
-	mpcs->sgmii_pcs.neg_mode = true;
 	mpcs->xg_pcs.ops = &mv88e6390_xg_pcs_ops;
-	mpcs->xg_pcs.neg_mode = true;
 
 	if (chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6190X ||
 	    chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6390X)
···
 		return -ENOMEM;
 
 	mpcs->sgmii_pcs.ops = &mv88e6393x_sgmii_pcs_ops;
-	mpcs->sgmii_pcs.neg_mode = true;
 	mpcs->xg_pcs.ops = &mv88e6393x_xg_pcs_ops;
-	mpcs->xg_pcs.neg_mode = true;
 	mpcs->supports_5g = true;
 
 	err = mv88e6393x_erratum_4_6(mpcs);

drivers/net/dsa/qca/qca8k-8xxx.c

···
 			    int port)
 {
 	qpcs->pcs.ops = &qca8k_pcs_ops;
-	qpcs->pcs.neg_mode = true;
 
 	/* We don't have interrupts for link changes, so we need to poll */
 	qpcs->pcs.poll = true;

drivers/net/ethernet/cadence/macb_main.c

···
 	struct macb *bp = netdev_priv(dev);
 
 	bp->phylink_sgmii_pcs.ops = &macb_phylink_pcs_ops;
-	bp->phylink_sgmii_pcs.neg_mode = true;
 	bp->phylink_usx_pcs.ops = &macb_phylink_usx_pcs_ops;
-	bp->phylink_usx_pcs.neg_mode = true;
 
 	bp->phylink_config.dev = &dev->dev;
 	bp->phylink_config.type = PHYLINK_NETDEV;

drivers/net/ethernet/freescale/fman/fman_dtsec.c

···
 		goto _return_fm_mac_free;
 	}
 	dtsec->pcs.ops = &dtsec_pcs_ops;
-	dtsec->pcs.neg_mode = true;
 	dtsec->pcs.poll = true;
 
 	supported = mac_dev->phylink_config.supported_interfaces;

drivers/net/ethernet/marvell/mvneta.c

···
 		clk_prepare_enable(pp->clk_bus);
 
 	pp->phylink_pcs.ops = &mvneta_phylink_pcs_ops;
-	pp->phylink_pcs.neg_mode = true;
 
 	pp->phylink_config.dev = &dev->dev;
 	pp->phylink_config.type = PHYLINK_NETDEV;

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

···
 	dev->dev_port = port->id;
 
 	port->pcs_gmac.ops = &mvpp2_phylink_gmac_pcs_ops;
-	port->pcs_gmac.neg_mode = true;
 	port->pcs_xlg.ops = &mvpp2_phylink_xlg_pcs_ops;
-	port->pcs_xlg.neg_mode = true;
 
 	if (!mvpp2_use_acpi_compat_mode(port_fwnode)) {
 		port->phylink_config.dev = &dev->dev;

drivers/net/ethernet/marvell/prestera/prestera_main.c

···
 			continue;
 
 		port->phylink_pcs.ops = &prestera_pcs_ops;
-		port->phylink_pcs.neg_mode = true;
 
 		port->phy_config.dev = &port->dev->dev;
 		port->phy_config.type = PHYLINK_NETDEV;

drivers/net/ethernet/meta/fbnic/fbnic_phylink.c

···
 	struct fbnic_net *fbn = netdev_priv(netdev);
 	struct phylink *phylink;
 
-	fbn->phylink_pcs.neg_mode = true;
 	fbn->phylink_pcs.ops = &fbnic_phylink_pcs_ops;
 
 	fbn->phylink_config.dev = &netdev->dev;

drivers/net/ethernet/microchip/lan966x/lan966x_main.c

···
 	port->phylink_config.type = PHYLINK_NETDEV;
 	port->phylink_pcs.poll = true;
 	port->phylink_pcs.ops = &lan966x_phylink_pcs_ops;
-	port->phylink_pcs.neg_mode = true;
 
 	port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
 		MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;

drivers/net/ethernet/microchip/sparx5/sparx5_main.c

···
 	spx5_port->custom_etype = 0x8880; /* Vitesse */
 	spx5_port->phylink_pcs.poll = true;
 	spx5_port->phylink_pcs.ops = &sparx5_phylink_pcs_ops;
-	spx5_port->phylink_pcs.neg_mode = true;
 	spx5_port->is_mrouter = false;
 	INIT_LIST_HEAD(&spx5_port->tc_templates);
 	sparx5->ports[config->portno] = spx5_port;

drivers/net/ethernet/xilinx/xilinx_axienet_main.c

···
 		}
 		of_node_put(np);
 		lp->pcs.ops = &axienet_pcs_ops;
-		lp->pcs.neg_mode = true;
 		lp->pcs.poll = true;
 	}
 

drivers/net/pcs/pcs-lynx.c

···
 	mdio_device_get(mdio);
 	lynx->mdio = mdio;
 	lynx->pcs.ops = &lynx_pcs_phylink_ops;
-	lynx->pcs.neg_mode = true;
 	lynx->pcs.poll = true;
 
 	for (i = 0; i < ARRAY_SIZE(lynx_interfaces); i++)

drivers/net/pcs/pcs-mtk-lynxi.c

···
 	mpcs->regmap = regmap;
 	mpcs->flags = flags;
 	mpcs->pcs.ops = &mtk_pcs_lynxi_ops;
-	mpcs->pcs.neg_mode = true;
 	mpcs->pcs.poll = true;
 	mpcs->interface = PHY_INTERFACE_MODE_NA;
 

drivers/net/pcs/pcs-rzn1-miic.c

···
 	miic_port->miic = miic;
 	miic_port->port = port - 1;
 	miic_port->pcs.ops = &miic_phylink_ops;
-	miic_port->pcs.neg_mode = true;
 
 	phy_interface_set_rgmii(miic_port->pcs.supported_interfaces);
 	__set_bit(PHY_INTERFACE_MODE_RMII, miic_port->pcs.supported_interfaces);

drivers/net/pcs/pcs-xpcs.c

···
 	mdio_device_get(mdiodev);
 	xpcs->mdiodev = mdiodev;
 	xpcs->pcs.ops = &xpcs_phylink_ops;
-	xpcs->pcs.neg_mode = true;
 	xpcs->pcs.poll = true;
 
 	return xpcs;

drivers/net/phy/phylink.c

···
 	struct phylink_pcs *pcs = NULL;
 	bool pcs_changed = false;
 	unsigned int rate_kbd;
-	unsigned int neg_mode;
 	int err;
 
 	phylink_dbg(pl, "major config, requested %s/%s\n",
···
 	if (pl->pcs_state == PCS_STATE_STARTING || pcs_changed)
 		phylink_pcs_enable(pl->pcs);
 
-	neg_mode = pl->act_link_an_mode;
-	if (pl->pcs && pl->pcs->neg_mode)
-		neg_mode = pl->pcs_neg_mode;
-
-	err = phylink_pcs_config(pl->pcs, neg_mode, state,
+	err = phylink_pcs_config(pl->pcs, pl->pcs_neg_mode, state,
 				 !!(pl->link_config.pause & MLO_PAUSE_AN));
 	if (err < 0)
 		phylink_err(pl, "pcs_config failed: %pe\n",
···
  */
 static int phylink_change_inband_advert(struct phylink *pl)
 {
-	unsigned int neg_mode;
 	int ret;
 
 	if (test_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state))
···
 	phylink_pcs_neg_mode(pl, pl->pcs, pl->link_config.interface,
 			     pl->link_config.advertising);
 
-	neg_mode = pl->act_link_an_mode;
-	if (pl->pcs->neg_mode)
-		neg_mode = pl->pcs_neg_mode;
-
 	/* Modern PCS-based method; update the advert at the PCS, and
 	 * restart negotiation if the pcs_config() helper indicates that
 	 * the programmed advertisement has changed.
 	 */
-	ret = phylink_pcs_config(pl->pcs, neg_mode, &pl->link_config,
+	ret = phylink_pcs_config(pl->pcs, pl->pcs_neg_mode, &pl->link_config,
 				 !!(pl->link_config.pause & MLO_PAUSE_AN));
 	if (ret < 0)
 		return ret;
···
 	state->an_complete = 0;
 	state->link = 1;
 
-	pcs = pl->pcs;
-	if (!pcs || pcs->neg_mode)
-		autoneg = pl->pcs_neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED;
-	else
-		autoneg = linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
-					    state->advertising);
-
+	autoneg = pl->pcs_neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED;
 	if (autoneg) {
 		state->speed = SPEED_UNKNOWN;
 		state->duplex = DUPLEX_UNKNOWN;
···
 		state->pause = pl->link_config.pause;
 	}
 
+	pcs = pl->pcs;
 	if (pcs)
 		pcs->ops->pcs_get_state(pcs, pl->pcs_neg_mode, state);
 	else
···
 			    struct phylink_link_state link_state)
 {
 	struct net_device *ndev = pl->netdev;
-	unsigned int neg_mode;
 	int speed, duplex;
 	bool rx_pause;
 
···
 
 	pl->cur_interface = link_state.interface;
 
-	neg_mode = pl->act_link_an_mode;
-	if (pl->pcs && pl->pcs->neg_mode)
-		neg_mode = pl->pcs_neg_mode;
-
-	phylink_pcs_link_up(pl->pcs, neg_mode, pl->cur_interface, speed,
+	phylink_pcs_link_up(pl->pcs, pl->pcs_neg_mode, pl->cur_interface, speed,
 			    duplex);
 
 	pl->mac_ops->mac_link_up(pl->config, pl->phydev, pl->act_link_an_mode,

include/linux/phylink.h

···
  *                        are supported by this PCS.
  * @ops: a pointer to the &struct phylink_pcs_ops structure
  * @phylink: pointer to &struct phylink_config
- * @neg_mode: provide PCS neg mode via "mode" argument
  * @poll: poll the PCS for link changes
  * @rxc_always_on: The MAC driver requires the reference clock
  *                 to always be on. Standalone PCS drivers which
···
 	DECLARE_PHY_INTERFACE_MASK(supported_interfaces);
 	const struct phylink_pcs_ops *ops;
 	struct phylink *phylink;
-	bool neg_mode;
 	bool poll;
 	bool rxc_always_on;
 };