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/*
* Driver for Broadcom 63xx SOCs integrated PHYs
*
* 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/module.h>
#include <linux/phy.h>
#define MII_BCM63XX_IR 0x1a /* interrupt register */
#define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
#define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
#define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
#define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
#define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
MODULE_LICENSE("GPL");
static int bcm63xx_config_init(struct phy_device *phydev)
{
int reg, err;
reg = phy_read(phydev, MII_BCM63XX_IR);
if (reg < 0)
return reg;
/* Mask interrupts globally. */
reg |= MII_BCM63XX_IR_GMASK;
err = phy_write(phydev, MII_BCM63XX_IR, reg);
if (err < 0)
return err;
/* Unmask events we are interested in */
reg = ~(MII_BCM63XX_IR_DUPLEX |
MII_BCM63XX_IR_SPEED |
MII_BCM63XX_IR_LINK) |
MII_BCM63XX_IR_EN;
return phy_write(phydev, MII_BCM63XX_IR, reg);
}
static int bcm63xx_ack_interrupt(struct phy_device *phydev)
{
int reg;
/* Clear pending interrupts. */
reg = phy_read(phydev, MII_BCM63XX_IR);
if (reg < 0)
return reg;
return 0;
}
static int bcm63xx_config_intr(struct phy_device *phydev)
{
int reg, err;
reg = phy_read(phydev, MII_BCM63XX_IR);
if (reg < 0)
return reg;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
reg &= ~MII_BCM63XX_IR_GMASK;
else
reg |= MII_BCM63XX_IR_GMASK;
err = phy_write(phydev, MII_BCM63XX_IR, reg);
return err;
}
static struct phy_driver bcm63xx_driver[] = {
{
.phy_id = 0x00406000,
.phy_id_mask = 0xfffffc00,
.name = "Broadcom BCM63XX (1)",
/* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
.flags = PHY_HAS_INTERRUPT | PHY_IS_INTERNAL,
.config_init = bcm63xx_config_init,
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.ack_interrupt = bcm63xx_ack_interrupt,
.config_intr = bcm63xx_config_intr,
.driver = { .owner = THIS_MODULE },
}, {
/* same phy as above, with just a different OUI */
.phy_id = 0x002bdc00,
.phy_id_mask = 0xfffffc00,
.name = "Broadcom BCM63XX (2)",
.features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
.flags = PHY_HAS_INTERRUPT | PHY_IS_INTERNAL,
.config_init = bcm63xx_config_init,
.config_aneg = genphy_config_aneg,
.read_status = genphy_read_status,
.ack_interrupt = bcm63xx_ack_interrupt,
.config_intr = bcm63xx_config_intr,
.driver = { .owner = THIS_MODULE },
} };
module_phy_driver(bcm63xx_driver);
static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
{ 0x00406000, 0xfffffc00 },
{ 0x002bdc00, 0xfffffc00 },
{ }
};
MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
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