1 files changed, 0 insertions, 117 deletions
diff --git a/drivers/net/phy/mdio-i2c.c b/drivers/net/phy/mdio-i2c.c
deleted file mode 100644
index 09200a70b315..000000000000
--- a/drivers/net/phy/mdio-i2c.c
+++ /dev/null
@@ -1,117 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * MDIO I2C bridge
- *
- * Copyright (C) 2015-2016 Russell King
- *
- * Network PHYs can appear on I2C buses when they are part of SFP module.
- * This driver exposes these PHYs to the networking PHY code, allowing
- * our PHY drivers access to these PHYs, and so allowing configuration
- * of their settings.
- */
-#include <linux/i2c.h>
-#include <linux/mdio/mdio-i2c.h>
-#include <linux/phy.h>
-
-/*
- * I2C bus addresses 0x50 and 0x51 are normally an EEPROM, which is
- * specified to be present in SFP modules.  These correspond with PHY
- * addresses 16 and 17.  Disallow access to these "phy" addresses.
- */
-static bool i2c_mii_valid_phy_id(int phy_id)
-{
-	return phy_id != 0x10 && phy_id != 0x11;
-}
-
-static unsigned int i2c_mii_phy_addr(int phy_id)
-{
-	return phy_id + 0x40;
-}
-
-static int i2c_mii_read(struct mii_bus *bus, int phy_id, int reg)
-{
-	struct i2c_adapter *i2c = bus->priv;
-	struct i2c_msg msgs[2];
-	u8 addr[3], data[2], *p;
-	int bus_addr, ret;
-
-	if (!i2c_mii_valid_phy_id(phy_id))
-		return 0xffff;
-
-	p = addr;
-	if (reg & MII_ADDR_C45) {
-		*p++ = 0x20 | ((reg >> 16) & 31);
-		*p++ = reg >> 8;
-	}
-	*p++ = reg;
-
-	bus_addr = i2c_mii_phy_addr(phy_id);
-	msgs[0].addr = bus_addr;
-	msgs[0].flags = 0;
-	msgs[0].len = p - addr;
-	msgs[0].buf = addr;
-	msgs[1].addr = bus_addr;
-	msgs[1].flags = I2C_M_RD;
-	msgs[1].len = sizeof(data);
-	msgs[1].buf = data;
-
-	ret = i2c_transfer(i2c, msgs, ARRAY_SIZE(msgs));
-	if (ret != ARRAY_SIZE(msgs))
-		return 0xffff;
-
-	return data[0] << 8 | data[1];
-}
-
-static int i2c_mii_write(struct mii_bus *bus, int phy_id, int reg, u16 val)
-{
-	struct i2c_adapter *i2c = bus->priv;
-	struct i2c_msg msg;
-	int ret;
-	u8 data[5], *p;
-
-	if (!i2c_mii_valid_phy_id(phy_id))
-		return 0;
-
-	p = data;
-	if (reg & MII_ADDR_C45) {
-		*p++ = (reg >> 16) & 31;
-		*p++ = reg >> 8;
-	}
-	*p++ = reg;
-	*p++ = val >> 8;
-	*p++ = val;
-
-	msg.addr = i2c_mii_phy_addr(phy_id);
-	msg.flags = 0;
-	msg.len = p - data;
-	msg.buf = data;
-
-	ret = i2c_transfer(i2c, &msg, 1);
-
-	return ret < 0 ? ret : 0;
-}
-
-struct mii_bus *mdio_i2c_alloc(struct device *parent, struct i2c_adapter *i2c)
-{
-	struct mii_bus *mii;
-
-	if (!i2c_check_functionality(i2c, I2C_FUNC_I2C))
-		return ERR_PTR(-EINVAL);
-
-	mii = mdiobus_alloc();
-	if (!mii)
-		return ERR_PTR(-ENOMEM);
-
-	snprintf(mii->id, MII_BUS_ID_SIZE, "i2c:%s", dev_name(parent));
-	mii->parent = parent;
-	mii->read = i2c_mii_read;
-	mii->write = i2c_mii_write;
-	mii->priv = i2c;
-
-	return mii;
-}
-EXPORT_SYMBOL_GPL(mdio_i2c_alloc);
-
-MODULE_AUTHOR("Russell King");
-MODULE_DESCRIPTION("MDIO I2C bridge library");
-MODULE_LICENSE("GPL v2");