phylib: Support registering a bunch of drivers
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / phy / realtek.c
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1/*
2 * drivers/net/phy/realtek.c
3 *
4 * Driver for Realtek PHYs
5 *
6 * Author: Johnson Leung <r58129@freescale.com>
7 *
8 * Copyright (c) 2004 Freescale Semiconductor, Inc.
9 *
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.
14 *
15 */
16#include <linux/phy.h>
9d9779e7 17#include <linux/module.h>
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18
19#define RTL821x_PHYSR 0x11
20#define RTL821x_PHYSR_DUPLEX 0x2000
21#define RTL821x_PHYSR_SPEED 0xc000
22#define RTL821x_INER 0x12
23#define RTL821x_INER_INIT 0x6400
24#define RTL821x_INSR 0x13
25
26MODULE_DESCRIPTION("Realtek PHY driver");
27MODULE_AUTHOR("Johnson Leung");
28MODULE_LICENSE("GPL");
29
30static int rtl821x_ack_interrupt(struct phy_device *phydev)
31{
32 int err;
33
34 err = phy_read(phydev, RTL821x_INSR);
35
36 return (err < 0) ? err : 0;
37}
38
39static int rtl821x_config_intr(struct phy_device *phydev)
40{
41 int err;
42
43 if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
44 err = phy_write(phydev, RTL821x_INER,
45 RTL821x_INER_INIT);
46 else
47 err = phy_write(phydev, RTL821x_INER, 0);
48
49 return err;
50}
51
52/* RTL8211B */
53static struct phy_driver rtl821x_driver = {
54 .phy_id = 0x001cc912,
55 .name = "RTL821x Gigabit Ethernet",
56 .phy_id_mask = 0x001fffff,
57 .features = PHY_GBIT_FEATURES,
58 .flags = PHY_HAS_INTERRUPT,
59 .config_aneg = &genphy_config_aneg,
60 .read_status = &genphy_read_status,
61 .ack_interrupt = &rtl821x_ack_interrupt,
62 .config_intr = &rtl821x_config_intr,
63 .driver = { .owner = THIS_MODULE,},
64};
65
66static int __init realtek_init(void)
67{
d5bf9071 68 return phy_driver_register(&rtl821x_driver);
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69}
70
71static void __exit realtek_exit(void)
72{
73 phy_driver_unregister(&rtl821x_driver);
74}
75
76module_init(realtek_init);
77module_exit(realtek_exit);
4e4f10f6 78
cf93c945 79static struct mdio_device_id __maybe_unused realtek_tbl[] = {
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80 { 0x001cc912, 0x001fffff },
81 { }
82};
83
84MODULE_DEVICE_TABLE(mdio, realtek_tbl);