/* * Driver for the Texas Instruments DP83848 PHY * * Copyright (C) 2015 Texas Instruments 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/module.h> #include <linux/phy.h> #define DP83848_PHY_ID 0x20005c90 /* Registers */ #define DP83848_MICR 0x11 #define DP83848_MISR 0x12 /* MICR Register Fields */ #define DP83848_MICR_INT_OE BIT(0) /* Interrupt Output Enable */ #define DP83848_MICR_INTEN BIT(1) /* Interrupt Enable */ /* MISR Register Fields */ #define DP83848_MISR_RHF_INT_EN BIT(0) /* Receive Error Counter */ #define DP83848_MISR_FHF_INT_EN BIT(1) /* False Carrier Counter */ #define DP83848_MISR_ANC_INT_EN BIT(2) /* Auto-negotiation complete */ #define DP83848_MISR_DUP_INT_EN BIT(3) /* Duplex Status */ #define DP83848_MISR_SPD_INT_EN BIT(4) /* Speed status */ #define DP83848_MISR_LINK_INT_EN BIT(5) /* Link status */ #define DP83848_MISR_ED_INT_EN BIT(6) /* Energy detect */ #define DP83848_MISR_LQM_INT_EN BIT(7) /* Link Quality Monitor */ static int dp83848_ack_interrupt(struct phy_device *phydev) { int err = phy_read(phydev, DP83848_MISR); return err < 0 ? err : 0; } static int dp83848_config_intr(struct phy_device *phydev) { int err; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { err = phy_write(phydev, DP83848_MICR, DP83848_MICR_INT_OE | DP83848_MICR_INTEN); if (err < 0) return err; return phy_write(phydev, DP83848_MISR, DP83848_MISR_ANC_INT_EN | DP83848_MISR_DUP_INT_EN | DP83848_MISR_SPD_INT_EN | DP83848_MISR_LINK_INT_EN); } return phy_write(phydev, DP83848_MICR, 0x0); } static struct mdio_device_id __maybe_unused dp83848_tbl[] = { { DP83848_PHY_ID, 0xfffffff0 }, { } }; MODULE_DEVICE_TABLE(mdio, dp83848_tbl); static struct phy_driver dp83848_driver[] = { { .phy_id = DP83848_PHY_ID, .phy_id_mask = 0xfffffff0, .name = "TI DP83848", .features = PHY_BASIC_FEATURES, .flags = PHY_HAS_INTERRUPT, .soft_reset = genphy_soft_reset, .config_init = genphy_config_init, .suspend = genphy_suspend, .resume = genphy_resume, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, /* IRQ related */ .ack_interrupt = dp83848_ack_interrupt, .config_intr = dp83848_config_intr, .driver = { .owner = THIS_MODULE, }, }, }; module_phy_driver(dp83848_driver); MODULE_DESCRIPTION("Texas Instruments DP83848 PHY driver"); MODULE_AUTHOR("Andrew F. Davis <afd@ti.com"); MODULE_LICENSE("GPL");