23f9e481db579ab79cbc4e4c5be7fdb0c67df14c
[openwrt/svn-archive/archive.git] / target / linux / ramips / files / drivers / net / ramips_esw.c
1 #include <linux/ioport.h>
2
3 #include <rt305x_regs.h>
4 #include <rt305x_esw_platform.h>
5
6 #define RT305X_ESW_PHY_WRITE (1 << 13)
7 #define RT305X_ESW_PHY_TOUT (5 * HZ)
8 #define RT305X_ESW_PHY_CONTROL_0 0xC0
9 #define RT305X_ESW_PHY_CONTROL_1 0xC4
10
11 struct rt305x_esw {
12 void __iomem *base;
13 struct rt305x_esw_platform_data *pdata;
14 };
15
16 static inline void
17 ramips_esw_wr(struct rt305x_esw *esw, u32 val, unsigned reg)
18 {
19 __raw_writel(val, esw->base + reg);
20 }
21
22 static inline u32
23 ramips_esw_rr(struct rt305x_esw *esw, unsigned reg)
24 {
25 return __raw_readl(esw->base + reg);
26 }
27
28 u32
29 mii_mgr_write(struct rt305x_esw *esw, u32 phy_addr, u32 phy_register,
30 u32 write_data)
31 {
32 unsigned long volatile t_start = jiffies;
33 int ret = 0;
34
35 while(1)
36 {
37 if(!(ramips_esw_rr(esw, RT305X_ESW_PHY_CONTROL_1) & (0x1 << 0)))
38 break;
39 if(time_after(jiffies, t_start + RT305X_ESW_PHY_TOUT))
40 {
41 ret = 1;
42 goto out;
43 }
44 }
45 ramips_esw_wr(esw, ((write_data & 0xFFFF) << 16) | (phy_register << 8) |
46 (phy_addr) | RT305X_ESW_PHY_WRITE, RT305X_ESW_PHY_CONTROL_0);
47 t_start = jiffies;
48 while(1)
49 {
50 if(ramips_esw_rr(esw, RT305X_ESW_PHY_CONTROL_1) & (0x1 << 0))
51 break;
52 if(time_after(jiffies, t_start + RT305X_ESW_PHY_TOUT))
53 {
54 ret = 1;
55 break;
56 }
57 }
58 out:
59 if(ret)
60 printk(KERN_ERR "ramips_eth: MDIO timeout\n");
61 return ret;
62 }
63
64 static void
65 rt305x_esw_hw_init(struct rt305x_esw *esw)
66 {
67 int i;
68
69 /* vodoo from original driver */
70 ramips_esw_wr(esw, 0xC8A07850, 0x08);
71 ramips_esw_wr(esw, 0x00000000, 0xe4);
72 ramips_esw_wr(esw, 0x00405555, 0x14);
73 ramips_esw_wr(esw, 0x00002001, 0x50);
74 ramips_esw_wr(esw, 0x00007f7f, 0x90);
75 ramips_esw_wr(esw, 0x00007f3f, 0x98);
76 ramips_esw_wr(esw, 0x00d6500c, 0xcc);
77 ramips_esw_wr(esw, 0x0008a301, 0x9c);
78 ramips_esw_wr(esw, 0x02404040, 0x8c);
79 ramips_esw_wr(esw, 0x00001002, 0x48);
80 ramips_esw_wr(esw, 0x3f502b28, 0xc8);
81 ramips_esw_wr(esw, 0x00000000, 0x84);
82
83 mii_mgr_write(esw, 0, 31, 0x8000);
84 for(i = 0; i < 5; i++)
85 {
86 mii_mgr_write(esw, i, 0, 0x3100); //TX10 waveform coefficient
87 mii_mgr_write(esw, i, 26, 0x1601); //TX10 waveform coefficient
88 mii_mgr_write(esw, i, 29, 0x7058); //TX100/TX10 AD/DA current bias
89 mii_mgr_write(esw, i, 30, 0x0018); //TX100 slew rate control
90 }
91 /* PHY IOT */
92 mii_mgr_write(esw, 0, 31, 0x0); //select global register
93 mii_mgr_write(esw, 0, 22, 0x052f); //tune TP_IDL tail and head waveform
94 mii_mgr_write(esw, 0, 17, 0x0fe0); //set TX10 signal amplitude threshold to minimum
95 mii_mgr_write(esw, 0, 18, 0x40ba); //set squelch amplitude to higher threshold
96 mii_mgr_write(esw, 0, 14, 0x65); //longer TP_IDL tail length
97 mii_mgr_write(esw, 0, 31, 0x8000); //select local register
98
99 /* set default vlan */
100 ramips_esw_wr(esw, 0x2001, 0x50);
101 ramips_esw_wr(esw, 0x504f, 0x70);
102 }
103
104 static int
105 rt305x_esw_probe(struct platform_device *pdev)
106 {
107 struct rt305x_esw_platform_data *pdata;
108 struct rt305x_esw *esw;
109 struct resource *res;
110 int err;
111
112 pdata = pdev->dev.platform_data;
113 if (!pdata)
114 return -EINVAL;
115
116 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
117 if (!res) {
118 dev_err(&pdev->dev, "no memory resource found\n");
119 return -ENOMEM;
120 }
121
122 esw = kzalloc(sizeof (struct rt305x_esw), GFP_KERNEL);
123 if (!esw) {
124 dev_err(&pdev->dev, "no memory for private data\n");
125 return -ENOMEM;
126 }
127
128 esw->base = ioremap(res->start, resource_size(res));
129 if (!esw->base) {
130 dev_err(&pdev->dev, "ioremap failed\n");
131 err = -ENOMEM;
132 goto free_esw;
133 }
134
135 platform_set_drvdata(pdev, esw);
136
137 esw->pdata = pdata;
138 rt305x_esw_hw_init(esw);
139
140 return 0;
141
142 free_esw:
143 kfree(esw);
144 return err;
145 }
146
147 static int
148 rt305x_esw_remove(struct platform_device *pdev)
149 {
150 struct rt305x_esw *esw;
151
152 esw = platform_get_drvdata(pdev);
153 if (esw) {
154 platform_set_drvdata(pdev, NULL);
155 iounmap(esw->base);
156 kfree(esw);
157 }
158
159 return 0;
160 }
161
162 static struct platform_driver rt305x_esw_driver = {
163 .probe = rt305x_esw_probe,
164 .remove = rt305x_esw_remove,
165 .driver = {
166 .name = "rt305x-esw",
167 .owner = THIS_MODULE,
168 },
169 };
170
171 static int __init
172 rt305x_esw_init(void)
173 {
174 return platform_driver_register(&rt305x_esw_driver);
175 }
176
177 static void __exit
178 rt305x_esw_exit(void)
179 {
180 platform_driver_unregister(&rt305x_esw_driver);
181 }