forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
2.1 KiB
99 lines
2.1 KiB
// SPDX-License-Identifier: GPL-2.0+ |
|
/* |
|
* Copyright 2017 NXP |
|
* |
|
* CORTINA is a registered trademark of Cortina Systems, Inc. |
|
* |
|
*/ |
|
#include <linux/module.h> |
|
#include <linux/phy.h> |
|
|
|
#define PHY_ID_CS4340 0x13e51002 |
|
|
|
#define VILLA_GLOBAL_CHIP_ID_LSB 0x0 |
|
#define VILLA_GLOBAL_CHIP_ID_MSB 0x1 |
|
|
|
#define VILLA_GLOBAL_GPIO_1_INTS 0x017 |
|
|
|
static int cortina_read_reg(struct phy_device *phydev, u16 regnum) |
|
{ |
|
return mdiobus_c45_read(phydev->mdio.bus, phydev->mdio.addr, 0, regnum); |
|
} |
|
|
|
static int cortina_read_status(struct phy_device *phydev) |
|
{ |
|
int gpio_int_status, ret = 0; |
|
|
|
gpio_int_status = cortina_read_reg(phydev, VILLA_GLOBAL_GPIO_1_INTS); |
|
if (gpio_int_status < 0) { |
|
ret = gpio_int_status; |
|
goto err; |
|
} |
|
|
|
if (gpio_int_status & 0x8) { |
|
/* up when edc_convergedS set */ |
|
phydev->speed = SPEED_10000; |
|
phydev->duplex = DUPLEX_FULL; |
|
phydev->link = 1; |
|
} else { |
|
phydev->link = 0; |
|
} |
|
|
|
err: |
|
return ret; |
|
} |
|
|
|
static int cortina_probe(struct phy_device *phydev) |
|
{ |
|
u32 phy_id = 0; |
|
int id_lsb = 0, id_msb = 0; |
|
|
|
/* Read device id from phy registers. */ |
|
id_lsb = cortina_read_reg(phydev, VILLA_GLOBAL_CHIP_ID_LSB); |
|
if (id_lsb < 0) |
|
return -ENXIO; |
|
|
|
phy_id = id_lsb << 16; |
|
|
|
id_msb = cortina_read_reg(phydev, VILLA_GLOBAL_CHIP_ID_MSB); |
|
if (id_msb < 0) |
|
return -ENXIO; |
|
|
|
phy_id |= id_msb; |
|
|
|
/* Make sure the device tree binding matched the driver with the |
|
* right device. |
|
*/ |
|
if (phy_id != phydev->drv->phy_id) { |
|
phydev_err(phydev, "Error matching phy with %s driver\n", |
|
phydev->drv->name); |
|
return -ENODEV; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static struct phy_driver cortina_driver[] = { |
|
{ |
|
.phy_id = PHY_ID_CS4340, |
|
.phy_id_mask = 0xffffffff, |
|
.name = "Cortina CS4340", |
|
.features = PHY_10GBIT_FEATURES, |
|
.config_aneg = gen10g_config_aneg, |
|
.read_status = cortina_read_status, |
|
.probe = cortina_probe, |
|
}, |
|
}; |
|
|
|
module_phy_driver(cortina_driver); |
|
|
|
static struct mdio_device_id __maybe_unused cortina_tbl[] = { |
|
{ PHY_ID_CS4340, 0xffffffff}, |
|
{}, |
|
}; |
|
|
|
MODULE_DEVICE_TABLE(mdio, cortina_tbl); |
|
|
|
MODULE_DESCRIPTION("Cortina EDC CDR 10G Ethernet PHY driver"); |
|
MODULE_AUTHOR("NXP"); |
|
MODULE_LICENSE("GPL");
|
|
|