1 /* 2 * Driver for Broadcom 63xx SOCs integrated PHYs 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 */ 9 #include "bcm-phy-lib.h" 10 #include <linux/module.h> 11 #include <linux/phy.h> 12 13 #define MII_BCM63XX_IR 0x1a /* interrupt register */ 14 #define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */ 15 #define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */ 16 #define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */ 17 #define MII_BCM63XX_IR_LINK 0x0200 /* link changed */ 18 #define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */ 19 20 MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver"); 21 MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>"); 22 MODULE_LICENSE("GPL"); 23 24 static int bcm63xx_config_intr(struct phy_device *phydev) 25 { 26 int reg, err; 27 28 reg = phy_read(phydev, MII_BCM63XX_IR); 29 if (reg < 0) 30 return reg; 31 32 if (phydev->interrupts == PHY_INTERRUPT_ENABLED) 33 reg &= ~MII_BCM63XX_IR_GMASK; 34 else 35 reg |= MII_BCM63XX_IR_GMASK; 36 37 err = phy_write(phydev, MII_BCM63XX_IR, reg); 38 return err; 39 } 40 41 static int bcm63xx_config_init(struct phy_device *phydev) 42 { 43 int reg, err; 44 45 /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */ 46 phydev->supported |= SUPPORTED_Pause; 47 48 reg = phy_read(phydev, MII_BCM63XX_IR); 49 if (reg < 0) 50 return reg; 51 52 /* Mask interrupts globally. */ 53 reg |= MII_BCM63XX_IR_GMASK; 54 err = phy_write(phydev, MII_BCM63XX_IR, reg); 55 if (err < 0) 56 return err; 57 58 /* Unmask events we are interested in */ 59 reg = ~(MII_BCM63XX_IR_DUPLEX | 60 MII_BCM63XX_IR_SPEED | 61 MII_BCM63XX_IR_LINK) | 62 MII_BCM63XX_IR_EN; 63 return phy_write(phydev, MII_BCM63XX_IR, reg); 64 } 65 66 static struct phy_driver bcm63xx_driver[] = { 67 { 68 .phy_id = 0x00406000, 69 .phy_id_mask = 0xfffffc00, 70 .name = "Broadcom BCM63XX (1)", 71 .features = PHY_BASIC_FEATURES, 72 .flags = PHY_HAS_INTERRUPT | PHY_IS_INTERNAL, 73 .config_init = bcm63xx_config_init, 74 .ack_interrupt = bcm_phy_ack_intr, 75 .config_intr = bcm63xx_config_intr, 76 }, { 77 /* same phy as above, with just a different OUI */ 78 .phy_id = 0x002bdc00, 79 .phy_id_mask = 0xfffffc00, 80 .features = PHY_BASIC_FEATURES, 81 .flags = PHY_HAS_INTERRUPT | PHY_IS_INTERNAL, 82 .config_init = bcm63xx_config_init, 83 .ack_interrupt = bcm_phy_ack_intr, 84 .config_intr = bcm63xx_config_intr, 85 } }; 86 87 module_phy_driver(bcm63xx_driver); 88 89 static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = { 90 { 0x00406000, 0xfffffc00 }, 91 { 0x002bdc00, 0xfffffc00 }, 92 { } 93 }; 94 95 MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl); 96