/* * 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; err = phy_write(phydev, MII_BCM63XX_IR, reg); if (err < 0) return err; return 0; } 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_1_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, .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 */ static struct phy_driver bcm63xx_2_driver = { .phy_id = 0x002bdc00, .phy_id_mask = 0xfffffc00, .name = "Broadcom BCM63XX (2)", .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), .flags = PHY_HAS_INTERRUPT, .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 }, }; static int __init bcm63xx_phy_init(void) { int ret; ret = phy_driver_register(&bcm63xx_1_driver); if (ret) goto out_63xx_1; ret = phy_driver_register(&bcm63xx_2_driver); if (ret) goto out_63xx_2; return ret; out_63xx_2: phy_driver_unregister(&bcm63xx_1_driver); out_63xx_1: return ret; } static void __exit bcm63xx_phy_exit(void) { phy_driver_unregister(&bcm63xx_1_driver); phy_driver_unregister(&bcm63xx_2_driver); } module_init(bcm63xx_phy_init); module_exit(bcm63xx_phy_exit); static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = { { 0x00406000, 0xfffffc00 }, { 0x002bdc00, 0xfffffc00 }, { } }; MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);