| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From 0836d9fb41ed90090ef4af0d7abe784ee7706f80 Mon Sep 17 00:00:00 2001 |
| 2 | From: Russell King <rmk+kernel@armlinux.org.uk> |
| 3 | Date: Fri, 14 Apr 2017 14:21:25 +0100 |
| 4 | Subject: [PATCH 636/660] net: phy: marvell10g: add SFP+ support |
| 5 | |
| 6 | Add support for SFP+ cages to the Marvell 10G PHY driver. This is |
| 7 | slightly complicated by the way phylib works in that we need to use |
| 8 | a multi-step process to attach the SFP bus, and we also need to track |
| 9 | the phylink state machine to know when the module's transmit disable |
| 10 | signal should change state. |
| 11 | |
| 12 | With appropriate DT changes, this allows the SFP+ canges on the |
| 13 | Macchiatobin platform to be functional. |
| 14 | |
| 15 | Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> |
| 16 | --- |
| 17 | drivers/net/phy/marvell10g.c | 25 ++++++++++++++++++++++++- |
| 18 | 1 file changed, 24 insertions(+), 1 deletion(-) |
| 19 | |
| 20 | --- a/drivers/net/phy/marvell10g.c |
| 21 | +++ b/drivers/net/phy/marvell10g.c |
| 22 | @@ -26,6 +26,7 @@ |
| 23 | #include <linux/hwmon.h> |
| 24 | #include <linux/marvell_phy.h> |
| 25 | #include <linux/phy.h> |
| 26 | +#include <linux/sfp.h> |
| 27 | |
| 28 | #define MV_PHY_ALASKA_NBT_QUIRK_MASK 0xfffffffe |
| 29 | #define MV_PHY_ALASKA_NBT_QUIRK_REV (MARVELL_PHY_ID_88X3310 | 0xa) |
| 30 | @@ -206,6 +207,28 @@ static int mv3310_hwmon_probe(struct phy |
| 31 | } |
| 32 | #endif |
| 33 | |
| 34 | +static int mv3310_sfp_insert(void *upstream, const struct sfp_eeprom_id *id) |
| 35 | +{ |
| 36 | + struct phy_device *phydev = upstream; |
| 37 | + __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, }; |
| 38 | + phy_interface_t iface; |
| 39 | + |
| 40 | + sfp_parse_support(phydev->sfp_bus, id, support); |
| 41 | + iface = sfp_select_interface(phydev->sfp_bus, id, support); |
| 42 | + |
| 43 | + if (iface != PHY_INTERFACE_MODE_10GKR) { |
| 44 | + dev_err(&phydev->mdio.dev, "incompatible SFP module inserted\n"); |
| 45 | + return -EINVAL; |
| 46 | + } |
| 47 | + return 0; |
| 48 | +} |
| 49 | + |
| 50 | +static const struct sfp_upstream_ops mv3310_sfp_ops = { |
| 51 | + .attach = phy_sfp_attach, |
| 52 | + .detach = phy_sfp_detach, |
| 53 | + .module_insert = mv3310_sfp_insert, |
| 54 | +}; |
| 55 | + |
| 56 | static int mv3310_probe(struct phy_device *phydev) |
| 57 | { |
| 58 | struct mv3310_priv *priv; |
| 59 | @@ -236,7 +259,7 @@ static int mv3310_probe(struct phy_devic |
| 60 | if (ret) |
| 61 | return ret; |
| 62 | |
| 63 | - return 0; |
| 64 | + return phy_sfp_probe(phydev, &mv3310_sfp_ops); |
| 65 | } |
| 66 | |
| 67 | static int mv3310_suspend(struct phy_device *phydev) |