| Maxime Bizon | 09bb9aa | 2009-07-01 01:29:36 +0000 | [diff] [blame] | 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 <linux/module.h> |
| 10 | #include <linux/phy.h> |
| 11 | |
| 12 | #define MII_BCM63XX_IR 0x1a /* interrupt register */ |
| 13 | #define MII_BCM63XX_IR_EN 0x4000 /* global interrupt enable */ |
| 14 | #define MII_BCM63XX_IR_DUPLEX 0x0800 /* duplex changed */ |
| 15 | #define MII_BCM63XX_IR_SPEED 0x0400 /* speed changed */ |
| 16 | #define MII_BCM63XX_IR_LINK 0x0200 /* link changed */ |
| 17 | #define MII_BCM63XX_IR_GMASK 0x0100 /* global interrupt mask */ |
| 18 | |
| 19 | MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver"); |
| 20 | MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>"); |
| 21 | MODULE_LICENSE("GPL"); |
| 22 | |
| 23 | static int bcm63xx_config_init(struct phy_device *phydev) |
| 24 | { |
| 25 | int reg, err; |
| 26 | |
| 27 | reg = phy_read(phydev, MII_BCM63XX_IR); |
| 28 | if (reg < 0) |
| 29 | return reg; |
| 30 | |
| 31 | /* Mask interrupts globally. */ |
| 32 | reg |= MII_BCM63XX_IR_GMASK; |
| 33 | err = phy_write(phydev, MII_BCM63XX_IR, reg); |
| 34 | if (err < 0) |
| 35 | return err; |
| 36 | |
| 37 | /* Unmask events we are interested in */ |
| 38 | reg = ~(MII_BCM63XX_IR_DUPLEX | |
| 39 | MII_BCM63XX_IR_SPEED | |
| 40 | MII_BCM63XX_IR_LINK) | |
| 41 | MII_BCM63XX_IR_EN; |
| 42 | err = phy_write(phydev, MII_BCM63XX_IR, reg); |
| 43 | if (err < 0) |
| 44 | return err; |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | static int bcm63xx_ack_interrupt(struct phy_device *phydev) |
| 49 | { |
| 50 | int reg; |
| 51 | |
| 52 | /* Clear pending interrupts. */ |
| 53 | reg = phy_read(phydev, MII_BCM63XX_IR); |
| 54 | if (reg < 0) |
| 55 | return reg; |
| 56 | |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | static int bcm63xx_config_intr(struct phy_device *phydev) |
| 61 | { |
| 62 | int reg, err; |
| 63 | |
| 64 | reg = phy_read(phydev, MII_BCM63XX_IR); |
| 65 | if (reg < 0) |
| 66 | return reg; |
| 67 | |
| 68 | if (phydev->interrupts == PHY_INTERRUPT_ENABLED) |
| 69 | reg &= ~MII_BCM63XX_IR_GMASK; |
| 70 | else |
| 71 | reg |= MII_BCM63XX_IR_GMASK; |
| 72 | |
| 73 | err = phy_write(phydev, MII_BCM63XX_IR, reg); |
| 74 | return err; |
| 75 | } |
| 76 | |
| 77 | static struct phy_driver bcm63xx_1_driver = { |
| 78 | .phy_id = 0x00406000, |
| 79 | .phy_id_mask = 0xfffffc00, |
| 80 | .name = "Broadcom BCM63XX (1)", |
| 81 | /* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */ |
| 82 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), |
| 83 | .flags = PHY_HAS_INTERRUPT, |
| 84 | .config_init = bcm63xx_config_init, |
| 85 | .config_aneg = genphy_config_aneg, |
| 86 | .read_status = genphy_read_status, |
| 87 | .ack_interrupt = bcm63xx_ack_interrupt, |
| 88 | .config_intr = bcm63xx_config_intr, |
| 89 | .driver = { .owner = THIS_MODULE }, |
| 90 | }; |
| 91 | |
| 92 | /* same phy as above, with just a different OUI */ |
| 93 | static struct phy_driver bcm63xx_2_driver = { |
| 94 | .phy_id = 0x002bdc00, |
| 95 | .phy_id_mask = 0xfffffc00, |
| 96 | .name = "Broadcom BCM63XX (2)", |
| 97 | .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), |
| 98 | .flags = PHY_HAS_INTERRUPT, |
| 99 | .config_init = bcm63xx_config_init, |
| 100 | .config_aneg = genphy_config_aneg, |
| 101 | .read_status = genphy_read_status, |
| 102 | .ack_interrupt = bcm63xx_ack_interrupt, |
| 103 | .config_intr = bcm63xx_config_intr, |
| 104 | .driver = { .owner = THIS_MODULE }, |
| 105 | }; |
| 106 | |
| 107 | static int __init bcm63xx_phy_init(void) |
| 108 | { |
| 109 | int ret; |
| 110 | |
| 111 | ret = phy_driver_register(&bcm63xx_1_driver); |
| 112 | if (ret) |
| 113 | goto out_63xx_1; |
| 114 | ret = phy_driver_register(&bcm63xx_2_driver); |
| 115 | if (ret) |
| 116 | goto out_63xx_2; |
| 117 | return ret; |
| 118 | |
| 119 | out_63xx_2: |
| 120 | phy_driver_unregister(&bcm63xx_1_driver); |
| 121 | out_63xx_1: |
| 122 | return ret; |
| 123 | } |
| 124 | |
| 125 | static void __exit bcm63xx_phy_exit(void) |
| 126 | { |
| 127 | phy_driver_unregister(&bcm63xx_1_driver); |
| 128 | phy_driver_unregister(&bcm63xx_2_driver); |
| 129 | } |
| 130 | |
| 131 | module_init(bcm63xx_phy_init); |
| 132 | module_exit(bcm63xx_phy_exit); |