/* * drivers/net/phy/at803x.c * * Driver for Atheros 803x PHY * * Author: Matus Ujhelyi * * 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. */ #include #include #include #include #include #define AT803X_INTR_ENABLE 0x12 #define AT803X_INTR_STATUS 0x13 #define AT803X_WOL_ENABLE 0x01 #define AT803X_DEVICE_ADDR 0x03 #define AT803X_LOC_MAC_ADDR_0_15_OFFSET 0x804C #define AT803X_LOC_MAC_ADDR_16_31_OFFSET 0x804B #define AT803X_LOC_MAC_ADDR_32_47_OFFSET 0x804A #define AT803X_MMD_ACCESS_CONTROL 0x0D #define AT803X_MMD_ACCESS_CONTROL_DATA 0x0E #define AT803X_FUNC_DATA 0x4003 #define AT803X_INER 0x0012 #define AT803X_INER_INIT 0xec00 #define AT803X_INSR 0x0013 #define AT803X_DEBUG_ADDR 0x1D #define AT803X_DEBUG_DATA 0x1E #define AT803X_DEBUG_SYSTEM_MODE_CTRL 0x05 #define AT803X_DEBUG_RGMII_TX_CLK_DLY BIT(8) #define ATH8030_PHY_ID 0x004dd076 #define ATH8031_PHY_ID 0x004dd074 #define ATH8035_PHY_ID 0x004dd072 MODULE_DESCRIPTION("Atheros 803x PHY driver"); MODULE_AUTHOR("Matus Ujhelyi"); MODULE_LICENSE("GPL"); static int at803x_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { struct net_device *ndev = phydev->attached_dev; const u8 *mac; int ret; u32 value; unsigned int i, offsets[] = { AT803X_LOC_MAC_ADDR_32_47_OFFSET, AT803X_LOC_MAC_ADDR_16_31_OFFSET, AT803X_LOC_MAC_ADDR_0_15_OFFSET, }; if (!ndev) return -ENODEV; if (wol->wolopts & WAKE_MAGIC) { mac = (const u8 *) ndev->dev_addr; if (!is_valid_ether_addr(mac)) return -EFAULT; for (i = 0; i < 3; i++) { phy_write(phydev, AT803X_MMD_ACCESS_CONTROL, AT803X_DEVICE_ADDR); phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA, offsets[i]); phy_write(phydev, AT803X_MMD_ACCESS_CONTROL, AT803X_FUNC_DATA); phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA, mac[(i * 2) + 1] | (mac[(i * 2)] << 8)); } value = phy_read(phydev, AT803X_INTR_ENABLE); value |= AT803X_WOL_ENABLE; ret = phy_write(phydev, AT803X_INTR_ENABLE, value); if (ret) return ret; value = phy_read(phydev, AT803X_INTR_STATUS); } else { value = phy_read(phydev, AT803X_INTR_ENABLE); value &= (~AT803X_WOL_ENABLE); ret = phy_write(phydev, AT803X_INTR_ENABLE, value); if (ret) return ret; value = phy_read(phydev, AT803X_INTR_STATUS); } return ret; } static void at803x_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { u32 value; wol->supported = WAKE_MAGIC; wol->wolopts = 0; value = phy_read(phydev, AT803X_INTR_ENABLE); if (value & AT803X_WOL_ENABLE) wol->wolopts |= WAKE_MAGIC; } static int at803x_suspend(struct phy_device *phydev) { int value; int wol_enabled; mutex_lock(&phydev->lock); value = phy_read(phydev, AT803X_INTR_ENABLE); wol_enabled = value & AT803X_WOL_ENABLE; value = phy_read(phydev, MII_BMCR); if (wol_enabled) value |= BMCR_ISOLATE; else value |= BMCR_PDOWN; phy_write(phydev, MII_BMCR, value); mutex_unlock(&phydev->lock); return 0; } static int at803x_resume(struct phy_device *phydev) { int value; mutex_lock(&phydev->lock); value = phy_read(phydev, MII_BMCR); value &= ~(BMCR_PDOWN | BMCR_ISOLATE); phy_write(phydev, MII_BMCR, value); mutex_unlock(&phydev->lock); return 0; } static int at803x_config_init(struct phy_device *phydev) { int ret; ret = genphy_config_init(phydev); if (ret < 0) return ret; if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) { ret = phy_write(phydev, AT803X_DEBUG_ADDR, AT803X_DEBUG_SYSTEM_MODE_CTRL); if (ret) return ret; ret = phy_write(phydev, AT803X_DEBUG_DATA, AT803X_DEBUG_RGMII_TX_CLK_DLY); if (ret) return ret; } return 0; } static int at803x_ack_interrupt(struct phy_device *phydev) { int err; err = phy_read(phydev, AT803X_INSR); return (err < 0) ? err : 0; } static int at803x_config_intr(struct phy_device *phydev) { int err; int value; value = phy_read(phydev, AT803X_INER); if (phydev->interrupts == PHY_INTERRUPT_ENABLED) err = phy_write(phydev, AT803X_INER, value | AT803X_INER_INIT); else err = phy_write(phydev, AT803X_INER, 0); return err; } static struct phy_driver at803x_driver[] = { { /* ATHEROS 8035 */ .phy_id = ATH8035_PHY_ID, .name = "Atheros 8035 ethernet", .phy_id_mask = 0xffffffef, .config_init = at803x_config_init, .set_wol = at803x_set_wol, .get_wol = at803x_get_wol, .suspend = at803x_suspend, .resume = at803x_resume, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .driver = { .owner = THIS_MODULE, }, }, { /* ATHEROS 8030 */ .phy_id = ATH8030_PHY_ID, .name = "Atheros 8030 ethernet", .phy_id_mask = 0xffffffef, .config_init = at803x_config_init, .set_wol = at803x_set_wol, .get_wol = at803x_get_wol, .suspend = at803x_suspend, .resume = at803x_resume, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .driver = { .owner = THIS_MODULE, }, }, { /* ATHEROS 8031 */ .phy_id = ATH8031_PHY_ID, .name = "Atheros 8031 ethernet", .phy_id_mask = 0xffffffef, .config_init = at803x_config_init, .set_wol = at803x_set_wol, .get_wol = at803x_get_wol, .suspend = at803x_suspend, .resume = at803x_resume, .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = &at803x_ack_interrupt, .config_intr = &at803x_config_intr, .driver = { .owner = THIS_MODULE, }, } }; static int __init atheros_init(void) { return phy_drivers_register(at803x_driver, ARRAY_SIZE(at803x_driver)); } static void __exit atheros_exit(void) { phy_drivers_unregister(at803x_driver, ARRAY_SIZE(at803x_driver)); } module_init(atheros_init); module_exit(atheros_exit); static struct mdio_device_id __maybe_unused atheros_tbl[] = { { ATH8030_PHY_ID, 0xffffffef }, { ATH8031_PHY_ID, 0xffffffef }, { ATH8035_PHY_ID, 0xffffffef }, { } }; MODULE_DEVICE_TABLE(mdio, atheros_tbl);