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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/phy/et1011c.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/phy/et1011c.c')
-rw-r--r-- | drivers/net/phy/et1011c.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/net/phy/et1011c.c b/drivers/net/phy/et1011c.c new file mode 100644 index 000000000..be1b71d7c --- /dev/null +++ b/drivers/net/phy/et1011c.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * drivers/net/phy/et1011c.c + * + * Driver for LSI ET1011C PHYs + * + * Author: Chaithrika U S + * + * Copyright (c) 2008 Texas Instruments + */ +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/unistd.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 = 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) +{ + static int speed; + int ret; + u32 val; + + 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, + /* PHY_GBIT_FEATURES */ + .config_aneg = et1011c_config_aneg, + .read_status = et1011c_read_status, +} }; + +module_phy_driver(et1011c_driver); + +static struct mdio_device_id __maybe_unused et1011c_tbl[] = { + { 0x0282f014, 0xfffffff0 }, + { } +}; + +MODULE_DEVICE_TABLE(mdio, et1011c_tbl); |