mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Christian Hohnstaedt](/assets/img/avatar_default.png)
If registering of one of them fails, all already registered drivers of this module will be unregistered. Use the new register/unregister functions in all drivers registering more than one driver. amd.c, realtek.c: Simplify: directly return registration result. Tested with broadcom.c All others compile-tested. Signed-off-by: Christian Hohnstaedt <chohnstaedt@innominate.com> Signed-off-by: David S. Miller <davem@davemloft.net>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
|
|
* Driver for AMD am79c PHYs
|
|
*
|
|
* Author: Heiko Schocher <hs@denx.de>
|
|
*
|
|
* Copyright (c) 2011 DENX Software Engineering GmbH
|
|
*
|
|
* 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 <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_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)
|
|
|
|
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 = phy_write(phydev, MII_AM79C_IR, MII_AM79C_IR_IMASK_INIT);
|
|
else
|
|
err = phy_write(phydev, MII_AM79C_IR, 0);
|
|
|
|
return err;
|
|
}
|
|
|
|
static struct phy_driver am79c_driver = {
|
|
.phy_id = PHY_ID_AM79C874,
|
|
.name = "AM79C874",
|
|
.phy_id_mask = 0xfffffff0,
|
|
.features = PHY_BASIC_FEATURES,
|
|
.flags = PHY_HAS_INTERRUPT,
|
|
.config_init = am79c_config_init,
|
|
.config_aneg = genphy_config_aneg,
|
|
.read_status = genphy_read_status,
|
|
.ack_interrupt = am79c_ack_interrupt,
|
|
.config_intr = am79c_config_intr,
|
|
.driver = { .owner = THIS_MODULE,},
|
|
};
|
|
|
|
static int __init am79c_init(void)
|
|
{
|
|
return phy_driver_register(&am79c_driver);
|
|
}
|
|
|
|
static void __exit am79c_exit(void)
|
|
{
|
|
phy_driver_unregister(&am79c_driver);
|
|
}
|
|
|
|
module_init(am79c_init);
|
|
module_exit(am79c_exit);
|
|
|
|
static struct mdio_device_id __maybe_unused amd_tbl[] = {
|
|
{ PHY_ID_AM79C874, 0xfffffff0 },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(mdio, amd_tbl);
|