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a758087f47
In preparation of removing the .ack_interrupt() callback, we must replace its occurrences (aka phy_clear_interrupt), from the 2 places where it is called from (phy_enable_interrupts and phy_disable_interrupts), with equivalent functionality. This means that clearing interrupts now becomes something that the PHY driver is responsible of doing, before enabling interrupts and after clearing them. Make this driver follow the new contract. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
154 lines
3.6 KiB
C
154 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* drivers/net/phy/cicada.c
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*
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* Driver for Cicada PHYs
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*
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* Author: Andy Fleming
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*
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* Copyright (c) 2004 Freescale Semiconductor, Inc.
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*/
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/unistd.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/spinlock.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/phy.h>
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#include <linux/io.h>
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#include <asm/irq.h>
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#include <linux/uaccess.h>
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/* Cicada Extended Control Register 1 */
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#define MII_CIS8201_EXT_CON1 0x17
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#define MII_CIS8201_EXTCON1_INIT 0x0000
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/* Cicada Interrupt Mask Register */
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#define MII_CIS8201_IMASK 0x19
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#define MII_CIS8201_IMASK_IEN 0x8000
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#define MII_CIS8201_IMASK_SPEED 0x4000
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#define MII_CIS8201_IMASK_LINK 0x2000
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#define MII_CIS8201_IMASK_DUPLEX 0x1000
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#define MII_CIS8201_IMASK_MASK 0xf000
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/* Cicada Interrupt Status Register */
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#define MII_CIS8201_ISTAT 0x1a
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#define MII_CIS8201_ISTAT_STATUS 0x8000
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#define MII_CIS8201_ISTAT_SPEED 0x4000
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#define MII_CIS8201_ISTAT_LINK 0x2000
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#define MII_CIS8201_ISTAT_DUPLEX 0x1000
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/* Cicada Auxiliary Control/Status Register */
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#define MII_CIS8201_AUX_CONSTAT 0x1c
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#define MII_CIS8201_AUXCONSTAT_INIT 0x0004
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#define MII_CIS8201_AUXCONSTAT_DUPLEX 0x0020
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#define MII_CIS8201_AUXCONSTAT_SPEED 0x0018
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#define MII_CIS8201_AUXCONSTAT_GBIT 0x0010
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#define MII_CIS8201_AUXCONSTAT_100 0x0008
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MODULE_DESCRIPTION("Cicadia PHY driver");
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MODULE_AUTHOR("Andy Fleming");
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MODULE_LICENSE("GPL");
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static int cis820x_config_init(struct phy_device *phydev)
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{
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int err;
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err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT,
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MII_CIS8201_AUXCONSTAT_INIT);
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if (err < 0)
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return err;
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err = phy_write(phydev, MII_CIS8201_EXT_CON1,
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MII_CIS8201_EXTCON1_INIT);
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return err;
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}
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static int cis820x_ack_interrupt(struct phy_device *phydev)
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{
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int err = phy_read(phydev, MII_CIS8201_ISTAT);
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return (err < 0) ? err : 0;
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}
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static int cis820x_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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err = cis820x_ack_interrupt(phydev);
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if (err)
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return err;
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err = phy_write(phydev, MII_CIS8201_IMASK,
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MII_CIS8201_IMASK_MASK);
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} else {
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err = phy_write(phydev, MII_CIS8201_IMASK, 0);
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if (err)
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return err;
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err = cis820x_ack_interrupt(phydev);
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}
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return err;
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}
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static irqreturn_t cis820x_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_CIS8201_ISTAT);
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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_CIS8201_IMASK_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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/* Cicada 8201, a.k.a Vitesse VSC8201 */
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static struct phy_driver cis820x_driver[] = {
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{
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.phy_id = 0x000fc410,
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.name = "Cicada Cis8201",
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.phy_id_mask = 0x000ffff0,
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/* PHY_GBIT_FEATURES */
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.config_init = &cis820x_config_init,
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.config_intr = &cis820x_config_intr,
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.handle_interrupt = &cis820x_handle_interrupt,
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}, {
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.phy_id = 0x000fc440,
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.name = "Cicada Cis8204",
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.phy_id_mask = 0x000fffc0,
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/* PHY_GBIT_FEATURES */
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.config_init = &cis820x_config_init,
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.config_intr = &cis820x_config_intr,
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.handle_interrupt = &cis820x_handle_interrupt,
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} };
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module_phy_driver(cis820x_driver);
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static struct mdio_device_id __maybe_unused cicada_tbl[] = {
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{ 0x000fc410, 0x000ffff0 },
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{ 0x000fc440, 0x000fffc0 },
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{ }
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};
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MODULE_DEVICE_TABLE(mdio, cicada_tbl);
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