generic: 5.15: move sfp HALNy patch from pending to backport

Move sfp HALNy patch from pending to backport as they got merged
upstream. The patch was reordered and one was squashed in the upstream
variant.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

1 files changed, 130 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/782-v6.1-net-dsa-mt7530-add-support-for-in-band-link-status.patch b/target/linux/generic/backport-5.15/782-v6.1-net-dsa-mt7530-add-support-for-in-band-link-status.patch
new file mode 100644
index 0000000000..7bb6530266
--- /dev/null
+++ b/target/linux/generic/backport-5.15/782-v6.1-net-dsa-mt7530-add-support-for-in-band-link-status.patch
@@ -0,0 +1,130 @@
+From e19de30d20809af3221ef8a2648b8a8a52e02d90 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Wed, 21 Sep 2022 01:23:14 +0100
+Subject: [PATCH 1/1] net: dsa: mt7530: add support for in-band link status
+
+Read link status from SGMII PCS for in-band managed 2500Base-X and
+1000Base-X connection on a MAC port of the MT7531. This is needed to
+get the SFP cage working which is connected to SGMII interface of
+port 5 of the MT7531 switch IC on the Bananapi BPi-R3 board.
+While at it also handle an_complete for both the autoneg and the
+non-autoneg codepath.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/dsa/mt7530.c | 50 +++++++++++++++++++++++++++++-----------
+ drivers/net/dsa/mt7530.h |  1 +
+ 2 files changed, 38 insertions(+), 13 deletions(-)
+
+--- a/drivers/net/dsa/mt7530.c
++++ b/drivers/net/dsa/mt7530.c
+@@ -2699,9 +2699,6 @@ mt7531_mac_config(struct dsa_switch *ds,
+ 	case PHY_INTERFACE_MODE_NA:
+ 	case PHY_INTERFACE_MODE_1000BASEX:
+ 	case PHY_INTERFACE_MODE_2500BASEX:
+-		if (phylink_autoneg_inband(mode))
+-			return -EINVAL;
+-
+ 		return mt7531_sgmii_setup_mode_force(priv, port, interface);
+ 	default:
+ 		return -EINVAL;
+@@ -2777,13 +2774,6 @@ unsupported:
+ 		return;
+ 	}
+ 
+-	if (phylink_autoneg_inband(mode) &&
+-	    state->interface != PHY_INTERFACE_MODE_SGMII) {
+-		dev_err(ds->dev, "%s: in-band negotiation unsupported\n",
+-			__func__);
+-		return;
+-	}
+-
+ 	mcr_cur = mt7530_read(priv, MT7530_PMCR_P(port));
+ 	mcr_new = mcr_cur;
+ 	mcr_new &= ~PMCR_LINK_SETTINGS_MASK;
+@@ -2920,6 +2910,9 @@ static void mt753x_phylink_get_caps(stru
+ 	config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
+ 				   MAC_10 | MAC_100 | MAC_1000FD;
+ 
++	if ((priv->id == ID_MT7531) && mt753x_is_mac_port(port))
++		config->mac_capabilities |= MAC_2500FD;
++
+ 	/* This driver does not make use of the speed, duplex, pause or the
+ 	 * advertisement in its mac_config, so it is safe to mark this driver
+ 	 * as non-legacy.
+@@ -2985,6 +2978,7 @@ mt7531_sgmii_pcs_get_state_an(struct mt7
+ 
+ 	status = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
+ 	state->link = !!(status & MT7531_SGMII_LINK_STATUS);
++	state->an_complete = !!(status & MT7531_SGMII_AN_COMPLETE);
+ 	if (state->interface == PHY_INTERFACE_MODE_SGMII &&
+ 	    (status & MT7531_SGMII_AN_ENABLE)) {
+ 		val = mt7530_read(priv, MT7531_PCS_SPEED_ABILITY(port));
+@@ -3015,16 +3009,44 @@ mt7531_sgmii_pcs_get_state_an(struct mt7
+ 	return 0;
+ }
+ 
++static void
++mt7531_sgmii_pcs_get_state_inband(struct mt7530_priv *priv, int port,
++				  struct phylink_link_state *state)
++{
++	unsigned int val;
++
++	val = mt7530_read(priv, MT7531_PCS_CONTROL_1(port));
++	state->link = !!(val & MT7531_SGMII_LINK_STATUS);
++	if (!state->link)
++		return;
++
++	state->an_complete = state->link;
++
++	if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
++		state->speed = SPEED_2500;
++	else
++		state->speed = SPEED_1000;
++
++	state->duplex = DUPLEX_FULL;
++	state->pause = MLO_PAUSE_NONE;
++}
++
+ static void mt7531_pcs_get_state(struct phylink_pcs *pcs,
+ 				 struct phylink_link_state *state)
+ {
+ 	struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ 	int port = pcs_to_mt753x_pcs(pcs)->port;
+ 
+-	if (state->interface == PHY_INTERFACE_MODE_SGMII)
++	if (state->interface == PHY_INTERFACE_MODE_SGMII) {
+ 		mt7531_sgmii_pcs_get_state_an(priv, port, state);
+-	else
+-		state->link = false;
++		return;
++	} else if ((state->interface == PHY_INTERFACE_MODE_1000BASEX) ||
++		   (state->interface == PHY_INTERFACE_MODE_2500BASEX)) {
++		mt7531_sgmii_pcs_get_state_inband(priv, port, state);
++		return;
++	}
++
++	state->link = false;
+ }
+ 
+ static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
+@@ -3065,6 +3087,8 @@ mt753x_setup(struct dsa_switch *ds)
+ 		priv->pcs[i].pcs.ops = priv->info->pcs_ops;
+ 		priv->pcs[i].priv = priv;
+ 		priv->pcs[i].port = i;
++		if (mt753x_is_mac_port(i))
++			priv->pcs[i].pcs.poll = 1;
+ 	}
+ 
+ 	ret = priv->info->sw_setup(ds);
+--- a/drivers/net/dsa/mt7530.h
++++ b/drivers/net/dsa/mt7530.h
+@@ -373,6 +373,7 @@ enum mt7530_vlan_port_acc_frm {
+ #define  MT7531_SGMII_LINK_STATUS	BIT(18)
+ #define  MT7531_SGMII_AN_ENABLE		BIT(12)
+ #define  MT7531_SGMII_AN_RESTART	BIT(9)
++#define  MT7531_SGMII_AN_COMPLETE	BIT(21)
+ 
+ /* Register for SGMII PCS_SPPED_ABILITY */
+ #define MT7531_PCS_SPEED_ABILITY(p)	MT7531_SGMII_REG(p, 0x08)