diff options
author | Daniel Golle <daniel@makrotopia.org> | 2022-09-21 03:23:14 +0300 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2022-09-23 13:58:37 +0300 |
commit | e19de30d20809af3221ef8a2648b8a8a52e02d90 (patch) | |
tree | eb100bd7c85c5e4f10c7f74629c7aa5164568d80 /drivers/net | |
parent | 793cc3c78e828d26723433c590cd90d20fc91011 (diff) | |
download | linux-e19de30d20809af3221ef8a2648b8a8a52e02d90.tar.xz |
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>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/dsa/mt7530.c | 50 | ||||
-rw-r--r-- | drivers/net/dsa/mt7530.h | 1 |
2 files changed, 38 insertions, 13 deletions
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index a6cb5b0406fe..e87f16a5756b 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2699,9 +2699,6 @@ mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, 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; @@ -2922,6 +2912,9 @@ static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port, 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. @@ -2987,6 +2980,7 @@ mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port, 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)); @@ -3017,16 +3011,44 @@ mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port, 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, @@ -3067,6 +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); diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h index e509af95c354..e8d966435350 100644 --- 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) |