1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
#define MAX_VMODES 4
#define FB_BPP 16
#define STD_CHANNEL "\x57\xCD\xDC\xA7\x1C\x88\x5E\x15\x60\xFE\xC6\x97\x16\x3D\x47\xF2"
// as libdlo
#define BUF_HIGH_WATER_MARK 1024
#define BUF_SIZE 64*1024
struct dlfb_data {
struct usb_device *udev;
struct usb_interface *interface;
struct urb *tx_urb, *ctrl_urb;
struct usb_ctrlrequest dr;
struct fb_info *info;
char *buf;
char *bufend;
char *backing_buffer;
struct mutex bulk_mutex;
char edid[128];
int screen_size;
int line_length;
struct completion done;
int base16;
int base16d;
int base8;
int base8d;
};
struct dlfb_video_mode {
uint8_t col;
uint32_t hclock;
uint32_t vclock;
uint8_t unknown1[6];
uint16_t xres;
uint8_t unknown2[6];
uint16_t yres;
uint8_t unknown3[4];
} __attribute__ ((__packed__));
struct dlfb_video_mode dlfb_video_modes[MAX_VMODES];
static void dlfb_bulk_callback(struct urb *urb)
{
struct dlfb_data *dev_info = urb->context;
complete(&dev_info->done);
}
static int dlfb_bulk_msg(struct dlfb_data *dev_info, int len)
{
int ret;
init_completion(&dev_info->done);
dev_info->tx_urb->actual_length = 0;
dev_info->tx_urb->transfer_buffer_length = len;
ret = usb_submit_urb(dev_info->tx_urb, GFP_KERNEL);
if (!wait_for_completion_timeout(&dev_info->done, 1000)) {
usb_kill_urb(dev_info->tx_urb);
printk("usb timeout !!!\n");
}
return dev_info->tx_urb->actual_length;
}
void dlfb_init_modes(void)
{
dlfb_video_modes[0].col = 0;
memcpy(&dlfb_video_modes[0].hclock, "\x20\x3C\x7A\xC9", 4);
memcpy(&dlfb_video_modes[0].vclock, "\xF2\x6C\x48\xF9", 4);
memcpy(&dlfb_video_modes[0].unknown1, "\x70\x53\xFF\xFF\x21\x27", 6);
dlfb_video_modes[0].xres = 800;
memcpy(&dlfb_video_modes[0].unknown2, "\x91\xF3\xFF\xFF\xFF\xF9", 6);
dlfb_video_modes[0].yres = 480;
memcpy(&dlfb_video_modes[0].unknown3, "\x01\x02\xC8\x19", 4);
dlfb_video_modes[1].col = 0;
memcpy(&dlfb_video_modes[1].hclock, "\x36\x18\xD5\x10", 4);
memcpy(&dlfb_video_modes[1].vclock, "\x60\xA9\x7B\x33", 4);
memcpy(&dlfb_video_modes[1].unknown1, "\xA1\x2B\x27\x32\xFF\xFF", 6);
dlfb_video_modes[1].xres = 1024;
memcpy(&dlfb_video_modes[1].unknown2, "\xD9\x9A\xFF\xCA\xFF\xFF", 6);
dlfb_video_modes[1].yres = 768;
memcpy(&dlfb_video_modes[1].unknown3, "\x04\x03\xC8\x32", 4);
dlfb_video_modes[2].col = 0;
memcpy(&dlfb_video_modes[2].hclock, "\x98\xF8\x0D\x57", 4);
memcpy(&dlfb_video_modes[2].vclock, "\x2A\x55\x4D\x54", 4);
memcpy(&dlfb_video_modes[2].unknown1, "\xCA\x0D\xFF\xFF\x94\x43", 6);
dlfb_video_modes[2].xres = 1280;
memcpy(&dlfb_video_modes[2].unknown2, "\x9A\xA8\xFF\xFF\xFF\xF9", 6);
dlfb_video_modes[2].yres = 1024;
memcpy(&dlfb_video_modes[2].unknown3, "\x04\x02\x60\x54", 4);
dlfb_video_modes[3].col = 0;
memcpy(&dlfb_video_modes[3].hclock, "\x42\x24\x38\x36", 4);
memcpy(&dlfb_video_modes[3].vclock, "\xC1\x52\xD9\x29", 4);
memcpy(&dlfb_video_modes[3].unknown1, "\xEA\xB8\x32\x60\xFF\xFF", 6);
dlfb_video_modes[3].xres = 1400;
memcpy(&dlfb_video_modes[3].unknown2, "\xC9\x4E\xFF\xFF\xFF\xF2", 6);
dlfb_video_modes[3].yres = 1050;
memcpy(&dlfb_video_modes[3].unknown3, "\x04\x02\x1E\x5F", 4);
}
char *dlfb_set_register(char *bufptr, uint8_t reg, uint8_t val)
{
*bufptr++ = 0xAF;
*bufptr++ = 0x20;
*bufptr++ = reg;
*bufptr++ = val;
return bufptr;
}
int dlfb_set_video_mode(struct dlfb_data *dev_info, int width, int height)
{
int i, ret;
unsigned char j;
char *bufptr = dev_info->buf;
uint8_t *vdata;
for (i = 0; i < MAX_VMODES; i++) {
printk("INIT VIDEO %d %d %d\n", i, dlfb_video_modes[i].xres,
dlfb_video_modes[i].yres);
if (dlfb_video_modes[i].xres == width
&& dlfb_video_modes[i].yres == height) {
dev_info->base16 = 0;
dev_info->base16d = width * height * (FB_BPP / 8) ;
//dev_info->base8 = width * height * (FB_BPP / 8);
dev_info->base8 = dev_info->base16;
dev_info->base8d = dev_info->base16d;
// set encryption key (null)
memcpy(dev_info->buf, STD_CHANNEL, 16);
ret =
usb_control_msg(dev_info->udev,
usb_sndctrlpipe(dev_info->udev, 0),
0x12, (0x02 << 5), 0, 0,
dev_info->buf, 16, 0);
printk("ret control msg 1 (STD_CHANNEL): %d\n", ret);
// set registers
bufptr = dlfb_set_register(bufptr, 0xFF, 0x00);
// set color depth
bufptr = dlfb_set_register(bufptr, 0x00, 0x00);
// set addresses
bufptr =
dlfb_set_register(bufptr, 0x20,
(char)(dev_info->base16 >> 16));
bufptr =
dlfb_set_register(bufptr, 0x21,
(char)(dev_info->base16 >> 8));
bufptr =
dlfb_set_register(bufptr, 0x22,
(char)(dev_info->base16));
bufptr =
dlfb_set_register(bufptr, 0x26,
(char)(dev_info->base8 >> 16));
bufptr =
dlfb_set_register(bufptr, 0x27,
(char)(dev_info->base8 >> 8));
bufptr =
dlfb_set_register(bufptr, 0x28,
(char)(dev_info->base8));
// set video mode
vdata = (uint8_t *) & dlfb_video_modes[i];
for (j = 0; j < 29; j++) {
bufptr = dlfb_set_register(bufptr, j, vdata[j]);
}
// blank
bufptr = dlfb_set_register(bufptr, 0x1F, 0x00);
// end registers
bufptr = dlfb_set_register(bufptr, 0xFF, 0xFF);
// send
ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
printk("ret bulk 2: %d %d\n", ret,
bufptr - dev_info->buf);
// flush
ret = dlfb_bulk_msg(dev_info, 0);
printk("ret bulk 3: %d\n", ret);
dev_info->screen_size = width * height * (FB_BPP / 8);
dev_info->line_length = width * (FB_BPP / 8);
return 0;
}
}
return -1;
}
|
