mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 17:26:39 +07:00
dbb7a95d81
Adds LSI ET1011C PHY driver. This driver is used by TI DM646x EVM. Signed-off-by: Chaithrika U S <chaithrika@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/*
|
|
* drivers/net/phy/et1011c.c
|
|
*
|
|
* Driver for LSI ET1011C PHYs
|
|
*
|
|
* Author: Chaithrika U S
|
|
*
|
|
* Copyright (c) 2008 Texas Instruments
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/unistd.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/io.h>
|
|
#include <linux/uaccess.h>
|
|
#include <asm/irq.h>
|
|
|
|
#define ET1011C_STATUS_REG (0x1A)
|
|
#define ET1011C_CONFIG_REG (0x16)
|
|
#define ET1011C_SPEED_MASK (0x0300)
|
|
#define ET1011C_GIGABIT_SPEED (0x0200)
|
|
#define ET1011C_TX_FIFO_MASK (0x3000)
|
|
#define ET1011C_TX_FIFO_DEPTH_8 (0x0000)
|
|
#define ET1011C_TX_FIFO_DEPTH_16 (0x1000)
|
|
#define ET1011C_INTERFACE_MASK (0x0007)
|
|
#define ET1011C_GMII_INTERFACE (0x0002)
|
|
#define ET1011C_SYS_CLK_EN (0x01 << 4)
|
|
|
|
|
|
MODULE_DESCRIPTION("LSI ET1011C PHY driver");
|
|
MODULE_AUTHOR("Chaithrika U S");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int et1011c_config_aneg(struct phy_device *phydev)
|
|
{
|
|
int ctl = 0;
|
|
ctl = phy_read(phydev, MII_BMCR);
|
|
if (ctl < 0)
|
|
return ctl;
|
|
ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
|
|
BMCR_ANENABLE);
|
|
/* First clear the PHY */
|
|
phy_write(phydev, MII_BMCR, ctl | BMCR_RESET);
|
|
|
|
return genphy_config_aneg(phydev);
|
|
}
|
|
|
|
static int et1011c_read_status(struct phy_device *phydev)
|
|
{
|
|
int ret;
|
|
u32 val;
|
|
static int speed;
|
|
ret = genphy_read_status(phydev);
|
|
|
|
if (speed != phydev->speed) {
|
|
speed = phydev->speed;
|
|
val = phy_read(phydev, ET1011C_STATUS_REG);
|
|
if ((val & ET1011C_SPEED_MASK) ==
|
|
ET1011C_GIGABIT_SPEED) {
|
|
val = phy_read(phydev, ET1011C_CONFIG_REG);
|
|
val &= ~ET1011C_TX_FIFO_MASK;
|
|
phy_write(phydev, ET1011C_CONFIG_REG, val\
|
|
| ET1011C_GMII_INTERFACE\
|
|
| ET1011C_SYS_CLK_EN\
|
|
| ET1011C_TX_FIFO_DEPTH_16);
|
|
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static struct phy_driver et1011c_driver = {
|
|
.phy_id = 0x0282f014,
|
|
.name = "ET1011C",
|
|
.phy_id_mask = 0xfffffff0,
|
|
.features = (PHY_BASIC_FEATURES | SUPPORTED_1000baseT_Full),
|
|
.flags = PHY_POLL,
|
|
.config_aneg = et1011c_config_aneg,
|
|
.read_status = et1011c_read_status,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static int __init et1011c_init(void)
|
|
{
|
|
return phy_driver_register(&et1011c_driver);
|
|
}
|
|
|
|
static void __exit et1011c_exit(void)
|
|
{
|
|
phy_driver_unregister(&et1011c_driver);
|
|
}
|
|
|
|
module_init(et1011c_init);
|
|
module_exit(et1011c_exit);
|