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/*
* Driver for Aquantia PHY
*
* Author: Shaohui Xie <Shaohui.Xie@freescale.com>
*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/mdio.h>
#define PHY_ID_AQ1202 0x03a1b445
#define PHY_ID_AQ2104 0x03a1b460
#define PHY_ID_AQR105 0x03a1b4a2
#define PHY_ID_AQR405 0x03a1b4b0
#define PHY_AQUANTIA_FEATURES (SUPPORTED_10000baseT_Full | \
SUPPORTED_1000baseT_Full | \
SUPPORTED_100baseT_Full | \
PHY_DEFAULT_FEATURES)
static int aquantia_config_aneg(struct phy_device *phydev)
{
phydev->supported = PHY_AQUANTIA_FEATURES;
phydev->advertising = phydev->supported;
return 0;
}
static int aquantia_aneg_done(struct phy_device *phydev)
{
int reg;
reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
return (reg < 0) ? reg : (reg & BMSR_ANEGCOMPLETE);
}
static int aquantia_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 1);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 1);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0x1001);
} else {
err = phy_write_mmd(phydev, MDIO_MMD_AN, 0xd401, 0);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff00, 0);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0xff01, 0);
}
return err;
}
static int aquantia_ack_interrupt(struct phy_device *phydev)
{
int reg;
reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xcc01);
return (reg < 0) ? reg : 0;
}
static int aquantia_read_status(struct phy_device *phydev)
{
int reg;
reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
reg = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
if (reg & MDIO_STAT1_LSTATUS)
phydev->link = 1;
else
phydev->link = 0;
reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
mdelay(10);
reg = phy_read_mmd(phydev, MDIO_MMD_AN, 0xc800);
switch (reg) {
case 0x9:
phydev->speed = SPEED_2500;
break;
case 0x5:
phydev->speed = SPEED_1000;
break;
case 0x3:
phydev->speed = SPEED_100;
break;
case 0x7:
default:
phydev->speed = SPEED_10000;
break;
}
phydev->duplex = DUPLEX_FULL;
return 0;
}
static struct phy_driver aquantia_driver[] = {
{
.phy_id = PHY_ID_AQ1202,
.phy_id_mask = 0xfffffff0,
.name = "Aquantia AQ1202",
.features = PHY_AQUANTIA_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.aneg_done = aquantia_aneg_done,
.config_aneg = aquantia_config_aneg,
.config_intr = aquantia_config_intr,
.ack_interrupt = aquantia_ack_interrupt,
.read_status = aquantia_read_status,
},
{
.phy_id = PHY_ID_AQ2104,
.phy_id_mask = 0xfffffff0,
.name = "Aquantia AQ2104",
.features = PHY_AQUANTIA_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.aneg_done = aquantia_aneg_done,
.config_aneg = aquantia_config_aneg,
.config_intr = aquantia_config_intr,
.ack_interrupt = aquantia_ack_interrupt,
.read_status = aquantia_read_status,
},
{
.phy_id = PHY_ID_AQR105,
.phy_id_mask = 0xfffffff0,
.name = "Aquantia AQR105",
.features = PHY_AQUANTIA_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.aneg_done = aquantia_aneg_done,
.config_aneg = aquantia_config_aneg,
.config_intr = aquantia_config_intr,
.ack_interrupt = aquantia_ack_interrupt,
.read_status = aquantia_read_status,
},
{
.phy_id = PHY_ID_AQR405,
.phy_id_mask = 0xfffffff0,
.name = "Aquantia AQR405",
.features = PHY_AQUANTIA_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.aneg_done = aquantia_aneg_done,
.config_aneg = aquantia_config_aneg,
.config_intr = aquantia_config_intr,
.ack_interrupt = aquantia_ack_interrupt,
.read_status = aquantia_read_status,
},
};
module_phy_driver(aquantia_driver);
static struct mdio_device_id __maybe_unused aquantia_tbl[] = {
{ PHY_ID_AQ1202, 0xfffffff0 },
{ PHY_ID_AQ2104, 0xfffffff0 },
{ PHY_ID_AQR105, 0xfffffff0 },
{ PHY_ID_AQR405, 0xfffffff0 },
{ }
};
MODULE_DEVICE_TABLE(mdio, aquantia_tbl);
MODULE_DESCRIPTION("Aquantia PHY driver");
MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
MODULE_LICENSE("GPL v2");
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