--- /dev/null
+From b697d9d38a5a5ab405d7cc4743d39fe2c5d7517c Mon Sep 17 00:00:00 2001
+From: Ivan Bornyakov <i.bornyakov@metrotek.ru>
+Date: Thu, 12 Aug 2021 16:42:56 +0300
+Subject: [PATCH] net: phy: marvell: add SFP support for 88E1510
+
+Add support for SFP cages connected to the Marvell 88E1512 transceiver.
+88E1512 supports for SGMII/1000Base-X/100Base-FX media type with RGMII
+on system interface. Configure PHY to appropriate mode depending on the
+type of SFP inserted. On SFP removal configure PHY to the RGMII-copper
+mode so RJ-45 port can still work.
+
+Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
+Link: https://lore.kernel.org/r/20210812134256.2436-1-i.bornyakov@metrotek.ru
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/phy/marvell.c | 105 +++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 104 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/phy/marvell.c
++++ b/drivers/net/phy/marvell.c
+@@ -32,6 +32,7 @@
+ #include <linux/marvell_phy.h>
+ #include <linux/bitfield.h>
+ #include <linux/of.h>
++#include <linux/sfp.h>
+
+ #include <linux/io.h>
+ #include <asm/irq.h>
+@@ -46,6 +47,7 @@
+ #define MII_MARVELL_MISC_TEST_PAGE 0x06
+ #define MII_MARVELL_VCT7_PAGE 0x07
+ #define MII_MARVELL_WOL_PAGE 0x11
++#define MII_MARVELL_MODE_PAGE 0x12
+
+ #define MII_M1011_IEVENT 0x13
+ #define MII_M1011_IEVENT_CLEAR 0x0000
+@@ -162,7 +164,14 @@
+
+ #define MII_88E1510_GEN_CTRL_REG_1 0x14
+ #define MII_88E1510_GEN_CTRL_REG_1_MODE_MASK 0x7
++#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII 0x0 /* RGMII to copper */
+ #define MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII 0x1 /* SGMII to copper */
++/* RGMII to 1000BASE-X */
++#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_1000X 0x2
++/* RGMII to 100BASE-FX */
++#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_100FX 0x3
++/* RGMII to SGMII */
++#define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_SGMII 0x4
+ #define MII_88E1510_GEN_CTRL_REG_1_RESET 0x8000 /* Soft reset */
+
+ #define MII_VCT5_TX_RX_MDI0_COUPLING 0x10
+@@ -2498,6 +2507,100 @@ static int marvell_probe(struct phy_devi
+ return marvell_hwmon_probe(phydev);
+ }
+
++static int m88e1510_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
++{
++ struct phy_device *phydev = upstream;
++ phy_interface_t interface;
++ struct device *dev;
++ int oldpage;
++ int ret = 0;
++ u16 mode;
++
++ __ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
++
++ dev = &phydev->mdio.dev;
++
++ sfp_parse_support(phydev->sfp_bus, id, supported);
++ interface = sfp_select_interface(phydev->sfp_bus, supported);
++
++ dev_info(dev, "%s SFP module inserted\n", phy_modes(interface));
++
++ switch (interface) {
++ case PHY_INTERFACE_MODE_1000BASEX:
++ mode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_1000X;
++
++ break;
++ case PHY_INTERFACE_MODE_100BASEX:
++ mode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_100FX;
++
++ break;
++ case PHY_INTERFACE_MODE_SGMII:
++ mode = MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_SGMII;
++
++ break;
++ default:
++ dev_err(dev, "Incompatible SFP module inserted\n");
++
++ return -EINVAL;
++ }
++
++ oldpage = phy_select_page(phydev, MII_MARVELL_MODE_PAGE);
++ if (oldpage < 0)
++ goto error;
++
++ ret = __phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,
++ MII_88E1510_GEN_CTRL_REG_1_MODE_MASK, mode);
++ if (ret < 0)
++ goto error;
++
++ ret = __phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,
++ MII_88E1510_GEN_CTRL_REG_1_RESET);
++
++error:
++ return phy_restore_page(phydev, oldpage, ret);
++}
++
++static void m88e1510_sfp_remove(void *upstream)
++{
++ struct phy_device *phydev = upstream;
++ int oldpage;
++ int ret = 0;
++
++ oldpage = phy_select_page(phydev, MII_MARVELL_MODE_PAGE);
++ if (oldpage < 0)
++ goto error;
++
++ ret = __phy_modify(phydev, MII_88E1510_GEN_CTRL_REG_1,
++ MII_88E1510_GEN_CTRL_REG_1_MODE_MASK,
++ MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII);
++ if (ret < 0)
++ goto error;
++
++ ret = __phy_set_bits(phydev, MII_88E1510_GEN_CTRL_REG_1,
++ MII_88E1510_GEN_CTRL_REG_1_RESET);
++
++error:
++ phy_restore_page(phydev, oldpage, ret);
++}
++
++static const struct sfp_upstream_ops m88e1510_sfp_ops = {
++ .module_insert = m88e1510_sfp_insert,
++ .module_remove = m88e1510_sfp_remove,
++ .attach = phy_sfp_attach,
++ .detach = phy_sfp_detach,
++};
++
++static int m88e1510_probe(struct phy_device *phydev)
++{
++ int err;
++
++ err = marvell_probe(phydev);
++ if (err)
++ return err;
++
++ return phy_sfp_probe(phydev, &m88e1510_sfp_ops);
++}
++
+ static struct phy_driver marvell_drivers[] = {
+ {
+ .phy_id = MARVELL_PHY_ID_88E1101,
+@@ -2704,7 +2807,7 @@ static struct phy_driver marvell_drivers
+ .driver_data = DEF_MARVELL_HWMON_OPS(m88e1510_hwmon_ops),
+ .features = PHY_GBIT_FIBRE_FEATURES,
+ .flags = PHY_POLL_CABLE_TEST,
+- .probe = marvell_probe,
++ .probe = m88e1510_probe,
+ .config_init = m88e1510_config_init,
+ .config_aneg = m88e1510_config_aneg,
+ .read_status = marvell_read_status,
projects / openwrt / openwrt.git / blobdiff