bd6783f4fb
Add support for in-band managed link status to support SFP cage connected to port 5 of the MT7531 switch on the Bananapi BPi-R3. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
124 lines
3.9 KiB
Diff
124 lines
3.9 KiB
Diff
From 8e18c5fef75debfae3531fbd6901f3bf317d91ed Mon Sep 17 00:00:00 2001
|
|
From: Daniel Golle <daniel@makrotopia.org>
|
|
Date: Fri, 9 Sep 2022 04:28:43 +0100
|
|
Subject: [PATCH] net: dsa: mt7530: add support for in-band link status
|
|
To: linux-mediatek@lists.infradead.org,
|
|
netdev@vger.kernel.org
|
|
Cc: Russell King <linux@armlinux.org.uk>,
|
|
Sean Wang <sean.wang@mediatek.com>,
|
|
Landen Chao <Landen.Chao@mediatek.com>,
|
|
DENG Qingfang <dqfext@gmail.com>,
|
|
Andrew Lunn <andrew@lunn.ch>,
|
|
Vivien Didelot <vivien.didelot@gmail.com>,
|
|
Florian Fainelli <f.fainelli@gmail.com>,
|
|
Vladimir Oltean <olteanv@gmail.com>,
|
|
David S. Miller <davem@davemloft.net>,
|
|
Eric Dumazet <edumazet@google.com>,
|
|
Jakub Kicinski <kuba@kernel.org>,
|
|
Paolo Abeni <pabeni@redhat.com>,
|
|
Matthias Brugger <matthias.bgg@gmail.com>,
|
|
Philipp Zabel <p.zabel@pengutronix.de>
|
|
|
|
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.
|
|
|
|
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
|
|
---
|
|
drivers/net/dsa/mt7530.c | 48 +++++++++++++++++++++++++++++-----------
|
|
1 file changed, 35 insertions(+), 13 deletions(-)
|
|
|
|
--- a/drivers/net/dsa/mt7530.c
|
|
+++ b/drivers/net/dsa/mt7530.c
|
|
@@ -2703,9 +2703,6 @@ 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;
|
|
@@ -2781,13 +2778,6 @@ 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;
|
|
@@ -2924,6 +2914,9 @@ 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.
|
|
@@ -3019,16 +3012,43 @@ 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;
|
|
+
|
|
+ if (state->interface == PHY_INTERFACE_MODE_2500BASEX)
|
|
+ state->speed = SPEED_2500;
|
|
+ else
|
|
+ state->speed = SPEED_1000;
|
|
+
|
|
+ state->duplex = DUPLEX_FULL;
|
|
+ state->pause = 0;
|
|
+}
|
|
+
|
|
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;
|
|
+ unsigned int val;
|
|
|
|
- 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,
|
|
@@ -3069,6 +3089,8 @@ 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);
|