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1 | /* |
2 | * drivers/net/phy/cicada.c | |
3 | * | |
4 | * Driver for Cicada PHYs | |
5 | * | |
6 | * Author: Andy Fleming | |
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/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> | |
30 | #include <linux/mm.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> | |
36 | ||
37 | #include <asm/io.h> | |
38 | #include <asm/irq.h> | |
39 | #include <asm/uaccess.h> | |
40 | ||
41 | /* Cicada Extended Control Register 1 */ | |
42 | #define MII_CIS8201_EXT_CON1 0x17 | |
43 | #define MII_CIS8201_EXTCON1_INIT 0x0000 | |
44 | ||
45 | /* Cicada Interrupt Mask Register */ | |
46 | #define MII_CIS8201_IMASK 0x19 | |
47 | #define MII_CIS8201_IMASK_IEN 0x8000 | |
48 | #define MII_CIS8201_IMASK_SPEED 0x4000 | |
49 | #define MII_CIS8201_IMASK_LINK 0x2000 | |
50 | #define MII_CIS8201_IMASK_DUPLEX 0x1000 | |
51 | #define MII_CIS8201_IMASK_MASK 0xf000 | |
52 | ||
53 | /* Cicada Interrupt Status Register */ | |
54 | #define MII_CIS8201_ISTAT 0x1a | |
55 | #define MII_CIS8201_ISTAT_STATUS 0x8000 | |
56 | #define MII_CIS8201_ISTAT_SPEED 0x4000 | |
57 | #define MII_CIS8201_ISTAT_LINK 0x2000 | |
58 | #define MII_CIS8201_ISTAT_DUPLEX 0x1000 | |
59 | ||
60 | /* Cicada Auxiliary Control/Status Register */ | |
61 | #define MII_CIS8201_AUX_CONSTAT 0x1c | |
62 | #define MII_CIS8201_AUXCONSTAT_INIT 0x0004 | |
63 | #define MII_CIS8201_AUXCONSTAT_DUPLEX 0x0020 | |
64 | #define MII_CIS8201_AUXCONSTAT_SPEED 0x0018 | |
65 | #define MII_CIS8201_AUXCONSTAT_GBIT 0x0010 | |
66 | #define MII_CIS8201_AUXCONSTAT_100 0x0008 | |
67 | ||
68 | MODULE_DESCRIPTION("Cicadia PHY driver"); | |
69 | MODULE_AUTHOR("Andy Fleming"); | |
70 | MODULE_LICENSE("GPL"); | |
71 | ||
72 | static int cis820x_config_init(struct phy_device *phydev) | |
73 | { | |
74 | int err; | |
75 | ||
76 | err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT, | |
77 | MII_CIS8201_AUXCONSTAT_INIT); | |
78 | ||
79 | if (err < 0) | |
80 | return err; | |
81 | ||
82 | err = phy_write(phydev, MII_CIS8201_EXT_CON1, | |
83 | MII_CIS8201_EXTCON1_INIT); | |
84 | ||
85 | return err; | |
86 | } | |
87 | ||
88 | static int cis820x_ack_interrupt(struct phy_device *phydev) | |
89 | { | |
90 | int err = phy_read(phydev, MII_CIS8201_ISTAT); | |
91 | ||
92 | return (err < 0) ? err : 0; | |
93 | } | |
94 | ||
95 | static int cis820x_config_intr(struct phy_device *phydev) | |
96 | { | |
97 | int err; | |
98 | ||
99 | if(phydev->interrupts == PHY_INTERRUPT_ENABLED) | |
100 | err = phy_write(phydev, MII_CIS8201_IMASK, | |
101 | MII_CIS8201_IMASK_MASK); | |
102 | else | |
103 | err = phy_write(phydev, MII_CIS8201_IMASK, 0); | |
104 | ||
105 | return err; | |
106 | } | |
107 | ||
108 | /* Cicada 820x */ | |
109 | static struct phy_driver cis8204_driver = { | |
110 | .phy_id = 0x000fc440, | |
111 | .name = "Cicada Cis8204", | |
112 | .phy_id_mask = 0x000fffc0, | |
113 | .features = PHY_GBIT_FEATURES, | |
114 | .flags = PHY_HAS_INTERRUPT, | |
115 | .config_init = &cis820x_config_init, | |
116 | .config_aneg = &genphy_config_aneg, | |
117 | .read_status = &genphy_read_status, | |
118 | .ack_interrupt = &cis820x_ack_interrupt, | |
119 | .config_intr = &cis820x_config_intr, | |
120 | .driver = { .owner = THIS_MODULE,}, | |
121 | }; | |
122 | ||
123 | static int __init cis8204_init(void) | |
124 | { | |
125 | return phy_driver_register(&cis8204_driver); | |
126 | } | |
127 | ||
128 | static void __exit cis8204_exit(void) | |
129 | { | |
130 | phy_driver_unregister(&cis8204_driver); | |
131 | } | |
132 | ||
133 | module_init(cis8204_init); | |
134 | module_exit(cis8204_exit); |