103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Driver for Broadcom 63xx SOCs integrated PHYs
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*/
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#include "bcm-phy-lib.h"
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#include <linux/module.h>
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#include <linux/phy.h>
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#define MII_BCM63XX_IR 0x1a /* interrupt register */
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#define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */
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#define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */
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#define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */
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#define MII_BCM63XX_IR_LINK 0x0200 /* link changed */
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#define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */
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MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
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MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
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MODULE_LICENSE("GPL");
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static int bcm63xx_config_intr(struct phy_device *phydev)
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{
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int reg, err;
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reg = phy_read(phydev, MII_BCM63XX_IR);
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if (reg < 0)
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return reg;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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err = bcm_phy_ack_intr(phydev);
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if (err)
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return err;
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reg &= ~MII_BCM63XX_IR_GMASK;
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err = phy_write(phydev, MII_BCM63XX_IR, reg);
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} else {
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reg |= MII_BCM63XX_IR_GMASK;
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err = phy_write(phydev, MII_BCM63XX_IR, reg);
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if (err)
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return err;
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err = bcm_phy_ack_intr(phydev);
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}
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return err;
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}
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static int bcm63xx_config_init(struct phy_device *phydev)
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{
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int reg, err;
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/* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
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linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);
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reg = phy_read(phydev, MII_BCM63XX_IR);
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if (reg < 0)
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return reg;
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/* Mask interrupts globally. */
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reg |= MII_BCM63XX_IR_GMASK;
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err = phy_write(phydev, MII_BCM63XX_IR, reg);
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if (err < 0)
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return err;
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/* Unmask events we are interested in */
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reg = ~(MII_BCM63XX_IR_DUPLEX |
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MII_BCM63XX_IR_SPEED |
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MII_BCM63XX_IR_LINK) |
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MII_BCM63XX_IR_EN;
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return phy_write(phydev, MII_BCM63XX_IR, reg);
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}
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static struct phy_driver bcm63xx_driver[] = {
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{
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.phy_id = 0x00406000,
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.phy_id_mask = 0xfffffc00,
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.name = "Broadcom BCM63XX (1)",
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/* PHY_BASIC_FEATURES */
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.flags = PHY_IS_INTERNAL,
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.config_init = bcm63xx_config_init,
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.config_intr = bcm63xx_config_intr,
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.handle_interrupt = bcm_phy_handle_interrupt,
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}, {
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/* same phy as above, with just a different OUI */
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.phy_id = 0x002bdc00,
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.phy_id_mask = 0xfffffc00,
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.name = "Broadcom BCM63XX (2)",
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/* PHY_BASIC_FEATURES */
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.flags = PHY_IS_INTERNAL,
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.config_init = bcm63xx_config_init,
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.config_intr = bcm63xx_config_intr,
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.handle_interrupt = bcm_phy_handle_interrupt,
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} };
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module_phy_driver(bcm63xx_driver);
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static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
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{ 0x00406000, 0xfffffc00 },
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{ 0x002bdc00, 0xfffffc00 },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);
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