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 reg = phy_read(phydev, MII_BCM63XX_IR); 46 if (reg < 0) 47 return reg; 48 49 /* Mask interrupts globally. */ 50 reg |= MII_BCM63XX_IR_GMASK; 51 err = phy_write(phydev, MII_BCM63XX_IR, reg); 52 if (err < 0) 53 return err; 54 55 /* Unmask events we are interested in */ 56 reg = ~(MII_BCM63XX_IR_DUPLEX | 57 MII_BCM63XX_IR_SPEED | 58 MII_BCM63XX_IR_LINK) | 59 MII_BCM63XX_IR_EN; 60 return phy_write(phydev, MII_BCM63XX_IR, reg); 61 } 62 63 static struct phy_driver bcm63xx_driver[] = { 64 { 65 .phy_id = 0x00406000, 66 .phy_id_mask = 0xfffffc00, 67 .name = "Broadcom BCM63XX (1)", 68 /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */ 69 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), 70 .flags = PHY_HAS_INTERRUPT | PHY_IS_INTERNAL, 71 .config_init = bcm63xx_config_init, 72 .config_aneg = genphy_config_aneg, 73 .read_status = genphy_read_status, 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 .name = "Broadcom BCM63XX (2)", 81 .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), 82 .flags = PHY_HAS_INTERRUPT | PHY_IS_INTERNAL, 83 .config_init = bcm63xx_config_init, 84 .config_aneg = genphy_config_aneg, 85 .read_status = genphy_read_status, 86 .ack_interrupt = bcm_phy_ack_intr, 87 .config_intr = bcm63xx_config_intr, 88 } }; 89 90 module_phy_driver(bcm63xx_driver); 91 92 static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = { 93 { 0x00406000, 0xfffffc00 }, 94 { 0x002bdc00, 0xfffffc00 }, 95 { } 96 }; 97 98 MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl); 99