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101 lines
2.4 KiB
101 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* drivers/net/phy/et1011c.c |
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* |
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* Driver for LSI ET1011C PHYs |
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* |
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* Author: Chaithrika U S |
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* |
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* Copyright (c) 2008 Texas Instruments |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/unistd.h> |
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#include <linux/interrupt.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/skbuff.h> |
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#include <linux/spinlock.h> |
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#include <linux/mm.h> |
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#include <linux/module.h> |
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#include <linux/mii.h> |
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#include <linux/ethtool.h> |
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#include <linux/phy.h> |
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#include <linux/io.h> |
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#include <linux/uaccess.h> |
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#include <asm/irq.h> |
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#define ET1011C_STATUS_REG (0x1A) |
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#define ET1011C_CONFIG_REG (0x16) |
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#define ET1011C_SPEED_MASK (0x0300) |
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#define ET1011C_GIGABIT_SPEED (0x0200) |
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#define ET1011C_TX_FIFO_MASK (0x3000) |
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#define ET1011C_TX_FIFO_DEPTH_8 (0x0000) |
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#define ET1011C_TX_FIFO_DEPTH_16 (0x1000) |
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#define ET1011C_INTERFACE_MASK (0x0007) |
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#define ET1011C_GMII_INTERFACE (0x0002) |
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#define ET1011C_SYS_CLK_EN (0x01 << 4) |
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MODULE_DESCRIPTION("LSI ET1011C PHY driver"); |
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MODULE_AUTHOR("Chaithrika U S"); |
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MODULE_LICENSE("GPL"); |
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static int et1011c_config_aneg(struct phy_device *phydev) |
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{ |
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int ctl = 0; |
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ctl = phy_read(phydev, MII_BMCR); |
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if (ctl < 0) |
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return ctl; |
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ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 | |
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BMCR_ANENABLE); |
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/* First clear the PHY */ |
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phy_write(phydev, MII_BMCR, ctl | BMCR_RESET); |
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return genphy_config_aneg(phydev); |
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} |
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static int et1011c_read_status(struct phy_device *phydev) |
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{ |
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int ret; |
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u32 val; |
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static int speed; |
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ret = genphy_read_status(phydev); |
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if (speed != phydev->speed) { |
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speed = phydev->speed; |
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val = phy_read(phydev, ET1011C_STATUS_REG); |
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if ((val & ET1011C_SPEED_MASK) == |
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ET1011C_GIGABIT_SPEED) { |
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val = phy_read(phydev, ET1011C_CONFIG_REG); |
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val &= ~ET1011C_TX_FIFO_MASK; |
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phy_write(phydev, ET1011C_CONFIG_REG, val\ |
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| ET1011C_GMII_INTERFACE\ |
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| ET1011C_SYS_CLK_EN\ |
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| ET1011C_TX_FIFO_DEPTH_16); |
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} |
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} |
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return ret; |
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} |
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static struct phy_driver et1011c_driver[] = { { |
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.phy_id = 0x0282f014, |
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.name = "ET1011C", |
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.phy_id_mask = 0xfffffff0, |
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/* PHY_GBIT_FEATURES */ |
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.config_aneg = et1011c_config_aneg, |
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.read_status = et1011c_read_status, |
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} }; |
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module_phy_driver(et1011c_driver); |
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static struct mdio_device_id __maybe_unused et1011c_tbl[] = { |
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{ 0x0282f014, 0xfffffff0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(mdio, et1011c_tbl);
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