2 * drivers/net/phy/mdio_bus.c
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
16 #include <linux/config.h>
17 #include <linux/kernel.h>
18 #include <linux/sched.h>
19 #include <linux/string.h>
20 #include <linux/errno.h>
21 #include <linux/unistd.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/init.h>
25 #include <linux/delay.h>
26 #include <linux/netdevice.h>
27 #include <linux/etherdevice.h>
28 #include <linux/skbuff.h>
29 #include <linux/spinlock.h>
31 #include <linux/module.h>
32 #include <linux/version.h>
33 #include <linux/mii.h>
34 #include <linux/ethtool.h>
35 #include <linux/phy.h>
39 #include <asm/uaccess.h>
43 * description: Given a PHY device, and a PHY driver, return 1 if
44 * the driver supports the device. Otherwise, return 0
46 static int mdio_bus_match(struct device *dev, struct device_driver *drv)
48 struct phy_device *phydev = to_phy_device(dev);
49 struct phy_driver *phydrv = to_phy_driver(drv);
51 return (phydrv->phy_id == (phydev->phy_id & phydrv->phy_id_mask));
54 /* Suspend and resume. Copied from platform_suspend and
57 static int mdio_bus_suspend(struct device * dev, u32 state)
60 struct device_driver *drv = dev->driver;
62 if (drv && drv->suspend) {
63 ret = drv->suspend(dev, state, SUSPEND_DISABLE);
65 ret = drv->suspend(dev, state, SUSPEND_SAVE_STATE);
67 ret = drv->suspend(dev, state, SUSPEND_POWER_DOWN);
72 static int mdio_bus_resume(struct device * dev)
75 struct device_driver *drv = dev->driver;
77 if (drv && drv->resume) {
78 ret = drv->resume(dev, RESUME_POWER_ON);
80 ret = drv->resume(dev, RESUME_RESTORE_STATE);
82 ret = drv->resume(dev, RESUME_ENABLE);
87 struct bus_type mdio_bus_type = {
89 .match = mdio_bus_match,
90 .suspend = mdio_bus_suspend,
91 .resume = mdio_bus_resume,
94 int __init mdio_bus_init(void)
96 return bus_register(&mdio_bus_type);