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16#include <linux/kernel.h>
17#include <linux/string.h>
18#include <linux/errno.h>
19#include <linux/unistd.h>
20#include <linux/interrupt.h>
21#include <linux/init.h>
22#include <linux/delay.h>
23#include <linux/netdevice.h>
24#include <linux/etherdevice.h>
25#include <linux/skbuff.h>
26#include <linux/spinlock.h>
27#include <linux/mm.h>
28#include <linux/module.h>
29#include <linux/mii.h>
30#include <linux/ethtool.h>
31#include <linux/phy.h>
32
33#include <asm/io.h>
34#include <asm/irq.h>
35#include <asm/uaccess.h>
36
37#define MII_DM9161_SCR 0x10
38#define MII_DM9161_SCR_INIT 0x0610
39#define MII_DM9161_SCR_RMII 0x0100
40
41
42#define MII_DM9161_INTR 0x15
43#define MII_DM9161_INTR_PEND 0x8000
44#define MII_DM9161_INTR_DPLX_MASK 0x0800
45#define MII_DM9161_INTR_SPD_MASK 0x0400
46#define MII_DM9161_INTR_LINK_MASK 0x0200
47#define MII_DM9161_INTR_MASK 0x0100
48#define MII_DM9161_INTR_DPLX_CHANGE 0x0010
49#define MII_DM9161_INTR_SPD_CHANGE 0x0008
50#define MII_DM9161_INTR_LINK_CHANGE 0x0004
51#define MII_DM9161_INTR_INIT 0x0000
52#define MII_DM9161_INTR_STOP \
53(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
54 | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)
55
56
57#define MII_DM9161_10BTCSR 0x12
58#define MII_DM9161_10BTCSR_INIT 0x7800
59
60MODULE_DESCRIPTION("Davicom PHY driver");
61MODULE_AUTHOR("Andy Fleming");
62MODULE_LICENSE("GPL");
63
64
65#define DM9161_DELAY 1
66static int dm9161_config_intr(struct phy_device *phydev)
67{
68 int temp;
69
70 temp = phy_read(phydev, MII_DM9161_INTR);
71
72 if (temp < 0)
73 return temp;
74
75 if(PHY_INTERRUPT_ENABLED == phydev->interrupts )
76 temp &= ~(MII_DM9161_INTR_STOP);
77 else
78 temp |= MII_DM9161_INTR_STOP;
79
80 temp = phy_write(phydev, MII_DM9161_INTR, temp);
81
82 return temp;
83}
84
85static int dm9161_config_aneg(struct phy_device *phydev)
86{
87 int err;
88
89
90 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
91
92 if (err < 0)
93 return err;
94
95
96 err = genphy_config_aneg(phydev);
97
98 if (err < 0)
99 return err;
100
101 return 0;
102}
103
104static int dm9161_config_init(struct phy_device *phydev)
105{
106 int err, temp;
107
108
109 err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
110
111 if (err < 0)
112 return err;
113
114 switch (phydev->interface) {
115 case PHY_INTERFACE_MODE_MII:
116 temp = MII_DM9161_SCR_INIT;
117 break;
118 case PHY_INTERFACE_MODE_RMII:
119 temp = MII_DM9161_SCR_INIT | MII_DM9161_SCR_RMII;
120 break;
121 default:
122 return -EINVAL;
123 }
124
125
126 err = phy_write(phydev, MII_DM9161_SCR, temp);
127 if (err < 0)
128 return err;
129
130
131 err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT);
132
133 if (err < 0)
134 return err;
135
136
137 return phy_write(phydev, MII_BMCR, BMCR_ANENABLE);
138}
139
140static int dm9161_ack_interrupt(struct phy_device *phydev)
141{
142 int err = phy_read(phydev, MII_DM9161_INTR);
143
144 return (err < 0) ? err : 0;
145}
146
147static struct phy_driver dm91xx_driver[] = {
148{
149 .phy_id = 0x0181b880,
150 .name = "Davicom DM9161E",
151 .phy_id_mask = 0x0ffffff0,
152 .features = PHY_BASIC_FEATURES,
153 .config_init = dm9161_config_init,
154 .config_aneg = dm9161_config_aneg,
155 .read_status = genphy_read_status,
156 .driver = { .owner = THIS_MODULE,},
157}, {
158 .phy_id = 0x0181b8a0,
159 .name = "Davicom DM9161A",
160 .phy_id_mask = 0x0ffffff0,
161 .features = PHY_BASIC_FEATURES,
162 .config_init = dm9161_config_init,
163 .config_aneg = dm9161_config_aneg,
164 .read_status = genphy_read_status,
165 .driver = { .owner = THIS_MODULE,},
166}, {
167 .phy_id = 0x00181b80,
168 .name = "Davicom DM9131",
169 .phy_id_mask = 0x0ffffff0,
170 .features = PHY_BASIC_FEATURES,
171 .flags = PHY_HAS_INTERRUPT,
172 .config_aneg = genphy_config_aneg,
173 .read_status = genphy_read_status,
174 .ack_interrupt = dm9161_ack_interrupt,
175 .config_intr = dm9161_config_intr,
176 .driver = { .owner = THIS_MODULE,},
177} };
178
179static int __init davicom_init(void)
180{
181 return phy_drivers_register(dm91xx_driver,
182 ARRAY_SIZE(dm91xx_driver));
183}
184
185static void __exit davicom_exit(void)
186{
187 phy_drivers_unregister(dm91xx_driver,
188 ARRAY_SIZE(dm91xx_driver));
189}
190
191module_init(davicom_init);
192module_exit(davicom_exit);
193
194static struct mdio_device_id __maybe_unused davicom_tbl[] = {
195 { 0x0181b880, 0x0ffffff0 },
196 { 0x0181b8a0, 0x0ffffff0 },
197 { 0x00181b80, 0x0ffffff0 },
198 { }
199};
200
201MODULE_DEVICE_TABLE(mdio, davicom_tbl);
202
