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1// SPDX-License-Identifier: GPL-2.0+2/*3 * Driver for Broadcom 63xx SOCs integrated PHYs4 */5#include "bcm-phy-lib.h"6#include <linux/module.h>7#include <linux/phy.h>8 9#define MII_BCM63XX_IR 0x1a /* interrupt register */10#define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */11#define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */12#define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */13#define MII_BCM63XX_IR_LINK 0x0200 /* link changed */14#define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */15 16MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");17MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");18MODULE_LICENSE("GPL");19 20static int bcm63xx_config_intr(struct phy_device *phydev)21{22 int reg, err;23 24 reg = phy_read(phydev, MII_BCM63XX_IR);25 if (reg < 0)26 return reg;27 28 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {29 err = bcm_phy_ack_intr(phydev);30 if (err)31 return err;32 33 reg &= ~MII_BCM63XX_IR_GMASK;34 err = phy_write(phydev, MII_BCM63XX_IR, reg);35 } else {36 reg |= MII_BCM63XX_IR_GMASK;37 err = phy_write(phydev, MII_BCM63XX_IR, reg);38 if (err)39 return err;40 41 err = bcm_phy_ack_intr(phydev);42 }43 44 return err;45}46 47static int bcm63xx_config_init(struct phy_device *phydev)48{49 int reg, err;50 51 /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */52 linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);53 54 reg = phy_read(phydev, MII_BCM63XX_IR);55 if (reg < 0)56 return reg;57 58 /* Mask interrupts globally. */59 reg |= MII_BCM63XX_IR_GMASK;60 err = phy_write(phydev, MII_BCM63XX_IR, reg);61 if (err < 0)62 return err;63 64 /* Unmask events we are interested in */65 reg = ~(MII_BCM63XX_IR_DUPLEX |66 MII_BCM63XX_IR_SPEED |67 MII_BCM63XX_IR_LINK) |68 MII_BCM63XX_IR_EN;69 return phy_write(phydev, MII_BCM63XX_IR, reg);70}71 72static struct phy_driver bcm63xx_driver[] = {73{74 .phy_id = 0x00406000,75 .phy_id_mask = 0xfffffc00,76 .name = "Broadcom BCM63XX (1)",77 /* PHY_BASIC_FEATURES */78 .flags = PHY_IS_INTERNAL,79 .config_init = bcm63xx_config_init,80 .config_intr = bcm63xx_config_intr,81 .handle_interrupt = bcm_phy_handle_interrupt,82}, {83 /* same phy as above, with just a different OUI */84 .phy_id = 0x002bdc00,85 .phy_id_mask = 0xfffffc00,86 .name = "Broadcom BCM63XX (2)",87 /* PHY_BASIC_FEATURES */88 .flags = PHY_IS_INTERNAL,89 .config_init = bcm63xx_config_init,90 .config_intr = bcm63xx_config_intr,91 .handle_interrupt = bcm_phy_handle_interrupt,92} };93 94module_phy_driver(bcm63xx_driver);95 96static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {97 { 0x00406000, 0xfffffc00 },98 { 0x002bdc00, 0xfffffc00 },99 { }100};101 102MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);103