138 строки
3.0 KiB
C
138 строки
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* drivers/net/phy/ste10Xp.c
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*
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* Driver for STMicroelectronics STe10Xp PHYs
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*
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* Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
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*
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* Copyright (c) 2008 STMicroelectronics Limited
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/moduleparam.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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#define MII_XCIIS 0x11 /* Configuration Info IRQ & Status Reg */
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#define MII_XIE 0x12 /* Interrupt Enable Register */
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#define MII_XIE_DEFAULT_MASK 0x0070 /* ANE complete, Remote Fault, Link Down */
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#define STE101P_PHY_ID 0x00061c50
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#define STE100P_PHY_ID 0x1c040011
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static int ste10Xp_config_init(struct phy_device *phydev)
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{
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int value, err;
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/* Software Reset PHY */
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value = phy_read(phydev, MII_BMCR);
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if (value < 0)
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return value;
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value |= BMCR_RESET;
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err = phy_write(phydev, MII_BMCR, value);
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if (err < 0)
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return err;
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do {
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value = phy_read(phydev, MII_BMCR);
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} while (value & BMCR_RESET);
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return 0;
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}
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static int ste10Xp_ack_interrupt(struct phy_device *phydev)
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{
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int err = phy_read(phydev, MII_XCIIS);
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if (err < 0)
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return err;
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return 0;
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}
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static int ste10Xp_config_intr(struct phy_device *phydev)
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{
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int err;
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
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/* clear any pending interrupts */
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err = ste10Xp_ack_interrupt(phydev);
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if (err)
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return err;
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/* Enable all STe101P interrupts (PR12) */
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err = phy_write(phydev, MII_XIE, MII_XIE_DEFAULT_MASK);
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} else {
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err = phy_write(phydev, MII_XIE, 0);
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if (err)
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return err;
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err = ste10Xp_ack_interrupt(phydev);
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}
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return err;
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}
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static irqreturn_t ste10Xp_handle_interrupt(struct phy_device *phydev)
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{
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int irq_status;
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irq_status = phy_read(phydev, MII_XCIIS);
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if (irq_status < 0) {
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phy_error(phydev);
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return IRQ_NONE;
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}
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if (!(irq_status & MII_XIE_DEFAULT_MASK))
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return IRQ_NONE;
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phy_trigger_machine(phydev);
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return IRQ_HANDLED;
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}
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static struct phy_driver ste10xp_pdriver[] = {
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{
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.phy_id = STE101P_PHY_ID,
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.phy_id_mask = 0xfffffff0,
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.name = "STe101p",
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/* PHY_BASIC_FEATURES */
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.config_init = ste10Xp_config_init,
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.config_intr = ste10Xp_config_intr,
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.handle_interrupt = ste10Xp_handle_interrupt,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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}, {
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.phy_id = STE100P_PHY_ID,
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.phy_id_mask = 0xffffffff,
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.name = "STe100p",
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/* PHY_BASIC_FEATURES */
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.config_init = ste10Xp_config_init,
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.config_intr = ste10Xp_config_intr,
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.handle_interrupt = ste10Xp_handle_interrupt,
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.suspend = genphy_suspend,
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.resume = genphy_resume,
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} };
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module_phy_driver(ste10xp_pdriver);
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static struct mdio_device_id __maybe_unused ste10Xp_tbl[] = {
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{ STE101P_PHY_ID, 0xfffffff0 },
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{ STE100P_PHY_ID, 0xffffffff },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, ste10Xp_tbl);
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MODULE_DESCRIPTION("STMicroelectronics STe10Xp PHY driver");
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MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>");
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MODULE_LICENSE("GPL");
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