/* * drivers/net/phy/micrel.c * * Driver for Micrel PHYs * * Author: David J. Choi * * Copyright (c) 2010 Micrel, Inc. * * 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. * * Support : ksz9021 1000/100/10 phy from Micrel * ks8001, ks8737, ks8721, ks8041, ks8051 100/10 phy */ #include #include #include #include /* general Interrupt control/status reg in vendor specific block. */ #define MII_KSZPHY_INTCS 0x1B #define KSZPHY_INTCS_JABBER (1 << 15) #define KSZPHY_INTCS_RECEIVE_ERR (1 << 14) #define KSZPHY_INTCS_PAGE_RECEIVE (1 << 13) #define KSZPHY_INTCS_PARELLEL (1 << 12) #define KSZPHY_INTCS_LINK_PARTNER_ACK (1 << 11) #define KSZPHY_INTCS_LINK_DOWN (1 << 10) #define KSZPHY_INTCS_REMOTE_FAULT (1 << 9) #define KSZPHY_INTCS_LINK_UP (1 << 8) #define KSZPHY_INTCS_ALL (KSZPHY_INTCS_LINK_UP |\ KSZPHY_INTCS_LINK_DOWN) /* general PHY control reg in vendor specific block. */ #define MII_KSZPHY_CTRL 0x1F /* bitmap of PHY register to set interrupt mode */ #define KSZPHY_CTRL_INT_ACTIVE_HIGH (1 << 9) #define KSZ9021_CTRL_INT_ACTIVE_HIGH (1 << 14) #define KS8737_CTRL_INT_ACTIVE_HIGH (1 << 14) #define KSZ8051_RMII_50MHZ_CLK (1 << 7) static int kszphy_ack_interrupt(struct phy_device *phydev) { /* bit[7..0] int status, which is a read and clear register. */ int rc; rc = phy_read(phydev, MII_KSZPHY_INTCS); return (rc < 0) ? rc : 0; } static int kszphy_set_interrupt(struct phy_device *phydev) { int temp; temp = (PHY_INTERRUPT_ENABLED == phydev->interrupts) ? KSZPHY_INTCS_ALL : 0; return phy_write(phydev, MII_KSZPHY_INTCS, temp); } static int kszphy_config_intr(struct phy_device *phydev) { int temp, rc; /* set the interrupt pin active low */ temp = phy_read(phydev, MII_KSZPHY_CTRL); temp &= ~KSZPHY_CTRL_INT_ACTIVE_HIGH; phy_write(phydev, MII_KSZPHY_CTRL, temp); rc = kszphy_set_interrupt(phydev); return rc < 0 ? rc : 0; } static int ksz9021_config_intr(struct phy_device *phydev) { int temp, rc; /* set the interrupt pin active low */ temp = phy_read(phydev, MII_KSZPHY_CTRL); temp &= ~KSZ9021_CTRL_INT_ACTIVE_HIGH; phy_write(phydev, MII_KSZPHY_CTRL, temp); rc = kszphy_set_interrupt(phydev); return rc < 0 ? rc : 0; } static int ks8737_config_intr(struct phy_device *phydev) { int temp, rc; /* set the interrupt pin active low */ temp = phy_read(phydev, MII_KSZPHY_CTRL); temp &= ~KS8737_CTRL_INT_ACTIVE_HIGH; phy_write(phydev, MII_KSZPHY_CTRL, temp); rc = kszphy_set_interrupt(phydev); return rc < 0 ? rc : 0; } static int kszphy_config_init(struct phy_device *phydev) { return 0; } static int ks8051_config_init(struct phy_device *phydev) { int regval; if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK) { regval = phy_read(phydev, MII_KSZPHY_CTRL); regval |= KSZ8051_RMII_50MHZ_CLK; phy_write(phydev, MII_KSZPHY_CTRL, regval); } return 0; } static struct phy_driver ks8737_driver = { .phy_id = PHY_ID_KS8737, .phy_id_mask = 0x00ffffff, .name = "Micrel KS8737", .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = kszphy_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = kszphy_ack_interrupt, .config_intr = ks8737_config_intr, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver ks8041_driver = { .phy_id = PHY_ID_KS8041, .phy_id_mask = 0x00fffff0, .name = "Micrel KS8041", .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause), .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = kszphy_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = kszphy_ack_interrupt, .config_intr = kszphy_config_intr, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver ks8051_driver = { .phy_id = PHY_ID_KS8051, .phy_id_mask = 0x00ffffff, .name = "Micrel KS8051", .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause), .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = ks8051_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = kszphy_ack_interrupt, .config_intr = kszphy_config_intr, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver ks8001_driver = { .phy_id = PHY_ID_KS8001, .name = "Micrel KS8001 or KS8721", .phy_id_mask = 0x00ffffff, .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = kszphy_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = kszphy_ack_interrupt, .config_intr = kszphy_config_intr, .driver = { .owner = THIS_MODULE,}, }; static struct phy_driver ksz9021_driver = { .phy_id = PHY_ID_KSZ9021, .phy_id_mask = 0x00ffffff, .name = "Micrel KSZ9021 Gigabit PHY", .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause), .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = kszphy_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = kszphy_ack_interrupt, .config_intr = ksz9021_config_intr, .driver = { .owner = THIS_MODULE, }, }; static int __init ksphy_init(void) { int ret; ret = phy_driver_register(&ks8001_driver); if (ret) goto err1; ret = phy_driver_register(&ksz9021_driver); if (ret) goto err2; ret = phy_driver_register(&ks8737_driver); if (ret) goto err3; ret = phy_driver_register(&ks8041_driver); if (ret) goto err4; ret = phy_driver_register(&ks8051_driver); if (ret) goto err5; return 0; err5: phy_driver_unregister(&ks8041_driver); err4: phy_driver_unregister(&ks8737_driver); err3: phy_driver_unregister(&ksz9021_driver); err2: phy_driver_unregister(&ks8001_driver); err1: return ret; } static void __exit ksphy_exit(void) { phy_driver_unregister(&ks8001_driver); phy_driver_unregister(&ks8737_driver); phy_driver_unregister(&ksz9021_driver); phy_driver_unregister(&ks8041_driver); phy_driver_unregister(&ks8051_driver); } module_init(ksphy_init); module_exit(ksphy_exit); MODULE_DESCRIPTION("Micrel PHY driver"); MODULE_AUTHOR("David J. Choi"); MODULE_LICENSE("GPL"); static struct mdio_device_id __maybe_unused micrel_tbl[] = { { PHY_ID_KSZ9021, 0x00ffffff }, { PHY_ID_KS8001, 0x00ffffff }, { PHY_ID_KS8737, 0x00ffffff }, { PHY_ID_KS8041, 0x00ffffff }, { PHY_ID_KS8051, 0x00ffffff }, { } }; MODULE_DEVICE_TABLE(mdio, micrel_tbl);