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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121// SPDX-License-Identifier: GPL-2.0+/* * Driver for AMD am79c PHYs * * Author: Heiko Schocher <hs@denx.de> * * Copyright (c) 2011 DENX Software Engineering GmbH */#include <linux/kernel.h>#include <linux/errno.h>#include <linux/init.h>#include <linux/module.h>#include <linux/mii.h>#include <linux/phy.h>
#define PHY_ID_AC101L 0x00225520#define PHY_ID_AM79C874 0x0022561b
#define MII_AM79C_IR 17 /* Interrupt Status/Control Register */#define MII_AM79C_IR_EN_LINK 0x0400 /* IR enable Linkstate */#define MII_AM79C_IR_EN_ANEG 0x0100 /* IR enable Aneg Complete */#define MII_AM79C_IR_IMASK_INIT (MII_AM79C_IR_EN_LINK | MII_AM79C_IR_EN_ANEG)
#define MII_AM79C_IR_LINK_DOWN BIT(2)#define MII_AM79C_IR_ANEG_DONE BIT(0)#define MII_AM79C_IR_IMASK_STAT (MII_AM79C_IR_LINK_DOWN | MII_AM79C_IR_ANEG_DONE)
MODULE_DESCRIPTION("AMD PHY driver");MODULE_AUTHOR("Heiko Schocher <hs@denx.de>");MODULE_LICENSE("GPL");
static int am79c_ack_interrupt(struct phy_device *phydev){ int err;
err = phy_read(phydev, MII_BMSR); if (err < 0) return err;
err = phy_read(phydev, MII_AM79C_IR); if (err < 0) return err;
return 0;}
static int am79c_config_init(struct phy_device *phydev){ return 0;}
static int am79c_config_intr(struct phy_device *phydev){ int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { err = am79c_ack_interrupt(phydev); if (err) return err;
err = phy_write(phydev, MII_AM79C_IR, MII_AM79C_IR_IMASK_INIT); } else { err = phy_write(phydev, MII_AM79C_IR, 0); if (err) return err;
err = am79c_ack_interrupt(phydev); }
return err;}
static irqreturn_t am79c_handle_interrupt(struct phy_device *phydev){ int irq_status;
irq_status = phy_read(phydev, MII_AM79C_IR); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; }
if (!(irq_status & MII_AM79C_IR_IMASK_STAT)) return IRQ_NONE;
phy_trigger_machine(phydev);
return IRQ_HANDLED;}
static struct phy_driver am79c_drivers[] = { { .phy_id = PHY_ID_AM79C874, .name = "AM79C874", .phy_id_mask = 0xfffffff0, /* PHY_BASIC_FEATURES */ .config_init = am79c_config_init, .config_intr = am79c_config_intr, .handle_interrupt = am79c_handle_interrupt, }, { .phy_id = PHY_ID_AC101L, .name = "AC101L", .phy_id_mask = 0xfffffff0, /* PHY_BASIC_FEATURES */ .config_init = am79c_config_init, .config_intr = am79c_config_intr, .handle_interrupt = am79c_handle_interrupt, },};
module_phy_driver(am79c_drivers);
static const struct mdio_device_id __maybe_unused amd_tbl[] = { { PHY_ID_AC101L, 0xfffffff0 }, { PHY_ID_AM79C874, 0xfffffff0 }, { }};
MODULE_DEVICE_TABLE(mdio, amd_tbl);