2 * USB ViCam WebCam driver
3 * Copyright (c) 2002 Joe Burks (jburks@wavicle.org),
4 * Christopher L Cheney (ccheney@cheney.cx),
5 * Pavel Machek (pavel@suse.cz),
6 * John Tyner (jtyner@cs.ucr.edu),
7 * Monroe Williams (monroe@pobox.com)
9 * Supports 3COM HomeConnect PC Digital WebCam
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 * This source code is based heavily on the CPiA webcam driver which was
26 * written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt
28 * Portions of this code were also copied from usbvideo.c
30 * Special thanks to the the whole team at Sourceforge for help making
31 * this driver become a reality. Notably:
32 * Andy Armstrong who reverse engineered the color encoding and
33 * Pavel Machek and Chris Cheney who worked on reverse engineering the
34 * camera controls and wrote the first generation driver.
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/init.h>
40 #include <linux/videodev.h>
41 #include <linux/usb.h>
42 #include <linux/vmalloc.h>
43 #include <linux/slab.h>
44 #include <linux/proc_fs.h>
47 // #define VICAM_DEBUG
50 #define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __FUNCTION__, lineno, ##args)
51 #define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args)
53 #define DBG(fmn,args...) do {} while(0)
56 #define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org"
57 #define DRIVER_DESC "ViCam WebCam Driver"
59 /* Define these values to match your device */
60 #define USB_VICAM_VENDOR_ID 0x04c1
61 #define USB_VICAM_PRODUCT_ID 0x009d
63 #define VICAM_BYTES_PER_PIXEL 3
64 #define VICAM_MAX_READ_SIZE (512*242+128)
65 #define VICAM_MAX_FRAME_SIZE (VICAM_BYTES_PER_PIXEL*320*240)
66 #define VICAM_FRAMES 2
68 #define VICAM_HEADER_SIZE 64
70 #define clamp( x, l, h ) max_t( __typeof__( x ), \
72 min_t( __typeof__( x ), \
76 /* Not sure what all the bytes in these char
77 * arrays do, but they're necessary to make
81 static unsigned char setup1[] = {
82 0xB6, 0xC3, 0x1F, 0x00, 0x02, 0x64, 0xE7, 0x67,
83 0xFD, 0xFF, 0x0E, 0xC0, 0xE7, 0x09, 0xDE, 0x00,
84 0x8E, 0x00, 0xC0, 0x09, 0x40, 0x03, 0xC0, 0x17,
85 0x44, 0x03, 0x4B, 0xAF, 0xC0, 0x07, 0x00, 0x00,
86 0x4B, 0xAF, 0x97, 0xCF, 0x00, 0x00
89 static unsigned char setup2[] = {
90 0xB6, 0xC3, 0x03, 0x00, 0x03, 0x64, 0x18, 0x00,
94 static unsigned char setup3[] = {
95 0xB6, 0xC3, 0x01, 0x00, 0x06, 0x64, 0x00, 0x00
98 static unsigned char setup4[] = {
99 0xB6, 0xC3, 0x8F, 0x06, 0x02, 0x64, 0xE7, 0x07,
100 0x00, 0x00, 0x08, 0xC0, 0xE7, 0x07, 0x00, 0x00,
101 0x3E, 0xC0, 0xE7, 0x07, 0x54, 0x01, 0xAA, 0x00,
102 0xE7, 0x07, 0xC8, 0x05, 0xB6, 0x00, 0xE7, 0x07,
103 0x42, 0x01, 0xD2, 0x00, 0xE7, 0x07, 0x7C, 0x00,
104 0x16, 0x00, 0xE7, 0x07, 0x56, 0x00, 0x18, 0x00,
105 0xE7, 0x07, 0x06, 0x00, 0x92, 0xC0, 0xE7, 0x07,
106 0x00, 0x00, 0x1E, 0xC0, 0xE7, 0x07, 0xFF, 0xFF,
107 0x22, 0xC0, 0xE7, 0x07, 0x04, 0x00, 0x24, 0xC0,
108 0xE7, 0x07, 0xEC, 0x27, 0x28, 0xC0, 0xE7, 0x07,
109 0x16, 0x01, 0x8E, 0x00, 0xE7, 0x87, 0x01, 0x00,
110 0x0E, 0xC0, 0x97, 0xCF, 0xD7, 0x09, 0x00, 0xC0,
111 0xE7, 0x77, 0x01, 0x00, 0x92, 0xC0, 0x09, 0xC1,
112 0xE7, 0x09, 0xFE, 0x05, 0x24, 0x01, 0xE7, 0x09,
113 0x04, 0x06, 0x26, 0x01, 0xE7, 0x07, 0x07, 0x00,
114 0x92, 0xC0, 0xE7, 0x05, 0x00, 0xC0, 0xC0, 0xDF,
115 0x97, 0xCF, 0x17, 0x00, 0x57, 0x00, 0x17, 0x02,
116 0xD7, 0x09, 0x00, 0xC0, 0xE7, 0x77, 0x01, 0x00,
117 0x92, 0xC0, 0x0A, 0xC1, 0xE7, 0x57, 0xFF, 0xFF,
118 0xFA, 0x05, 0x0D, 0xC0, 0xE7, 0x57, 0x00, 0x00,
119 0xFA, 0x05, 0x0F, 0xC0, 0x9F, 0xAF, 0xC6, 0x00,
120 0xE7, 0x05, 0x00, 0xC0, 0xC8, 0x05, 0xC1, 0x05,
121 0xC0, 0x05, 0xC0, 0xDF, 0x97, 0xCF, 0x27, 0xDA,
122 0xFA, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x0B, 0x06,
123 0x73, 0xCF, 0x9F, 0xAF, 0x78, 0x01, 0x9F, 0xAF,
124 0x1A, 0x03, 0x6E, 0xCF, 0xE7, 0x09, 0xFC, 0x05,
125 0x24, 0x01, 0xE7, 0x09, 0x02, 0x06, 0x26, 0x01,
126 0xE7, 0x07, 0x07, 0x00, 0x92, 0xC0, 0xE7, 0x09,
127 0xFC, 0x05, 0xFE, 0x05, 0xE7, 0x09, 0x02, 0x06,
128 0x04, 0x06, 0xE7, 0x09, 0x00, 0x06, 0xFC, 0x05,
129 0xE7, 0x09, 0xFE, 0x05, 0x00, 0x06, 0x27, 0xDA,
130 0xFA, 0x05, 0xE7, 0x57, 0x01, 0x00, 0xFA, 0x05,
131 0x02, 0xCA, 0x04, 0xC0, 0x97, 0xCF, 0x9F, 0xAF,
132 0x66, 0x05, 0x97, 0xCF, 0xE7, 0x07, 0x40, 0x00,
133 0x02, 0x06, 0xC8, 0x09, 0xFC, 0x05, 0x9F, 0xAF,
134 0xDA, 0x02, 0x97, 0xCF, 0xCF, 0x17, 0x02, 0x00,
135 0xEF, 0x57, 0x81, 0x00, 0x09, 0x06, 0x9F, 0xA0,
136 0xB6, 0x01, 0xEF, 0x57, 0x80, 0x00, 0x09, 0x06,
137 0x9F, 0xA0, 0x40, 0x02, 0xEF, 0x57, 0x01, 0x00,
138 0x0B, 0x06, 0x9F, 0xA0, 0x46, 0x03, 0xE7, 0x07,
139 0x01, 0x00, 0x0A, 0xC0, 0x46, 0xAF, 0x47, 0xAF,
140 0x9F, 0xAF, 0x40, 0x02, 0xE7, 0x07, 0x2E, 0x00,
141 0x0A, 0xC0, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06,
142 0x97, 0xCF, 0x00, 0x0E, 0x01, 0x00, 0xC0, 0x57,
143 0x51, 0x00, 0x9F, 0xC0, 0x9E, 0x02, 0xC0, 0x57,
144 0x50, 0x00, 0x20, 0xC0, 0xC0, 0x57, 0x55, 0x00,
145 0x12, 0xC0, 0xC0, 0x57, 0x56, 0x00, 0x9F, 0xC0,
146 0x72, 0x02, 0x9F, 0xCF, 0xD6, 0x02, 0xC1, 0x0B,
147 0x08, 0x06, 0x01, 0xD0, 0x6F, 0x90, 0x08, 0x06,
148 0xC0, 0x07, 0x08, 0x00, 0xC1, 0x0B, 0x08, 0x06,
149 0x9F, 0xAF, 0x28, 0x05, 0x97, 0xCF, 0x2F, 0x0E,
150 0x02, 0x00, 0x08, 0x06, 0xC0, 0x07, 0x08, 0x00,
151 0xC1, 0x0B, 0x08, 0x06, 0x9F, 0xAF, 0x28, 0x05,
152 0x9F, 0xCF, 0xD6, 0x02, 0x2F, 0x0E, 0x02, 0x00,
153 0x09, 0x06, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06,
154 0x9F, 0xCF, 0xD6, 0x02, 0xEF, 0x67, 0x7F, 0xFF,
155 0x09, 0x06, 0xE7, 0x67, 0xFF, 0xFD, 0x22, 0xC0,
156 0xE7, 0x67, 0xEF, 0xFF, 0x24, 0xC0, 0xE7, 0x87,
157 0x10, 0x00, 0x28, 0xC0, 0x9F, 0xAF, 0xB8, 0x05,
158 0xE7, 0x87, 0xE0, 0x21, 0x24, 0xC0, 0x9F, 0xAF,
159 0xA8, 0x05, 0xE7, 0x87, 0x08, 0x00, 0x24, 0xC0,
160 0xE7, 0x67, 0xDF, 0xFF, 0x24, 0xC0, 0xC8, 0x07,
161 0x0A, 0x00, 0xC0, 0x07, 0x00, 0x00, 0xC1, 0x07,
162 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0x9F, 0xAF,
163 0xB8, 0x05, 0xC0, 0x07, 0x9E, 0x00, 0x9F, 0xAF,
164 0x44, 0x05, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0,
165 0xC0, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01,
166 0x24, 0xC0, 0xC0, 0x77, 0x00, 0x02, 0x0F, 0xC1,
167 0xE7, 0x67, 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x67,
168 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x08, 0x00,
169 0x24, 0xC0, 0x08, 0xDA, 0x5E, 0xC1, 0xEF, 0x07,
170 0x80, 0x00, 0x09, 0x06, 0x97, 0xCF, 0xEF, 0x07,
171 0x01, 0x00, 0x0A, 0x06, 0x97, 0xCF, 0xEF, 0x07,
172 0x00, 0x00, 0x0B, 0x06, 0xEF, 0x07, 0x00, 0x00,
173 0x0A, 0x06, 0xEF, 0x67, 0x7F, 0xFF, 0x09, 0x06,
174 0xEF, 0x07, 0x00, 0x00, 0x0D, 0x06, 0xE7, 0x67,
175 0xEF, 0xFF, 0x28, 0xC0, 0xE7, 0x67, 0x17, 0xD8,
176 0x24, 0xC0, 0xE7, 0x07, 0x00, 0x00, 0x1E, 0xC0,
177 0xE7, 0x07, 0xFF, 0xFF, 0x22, 0xC0, 0x97, 0xCF,
178 0xC8, 0x07, 0x0E, 0x06, 0x9F, 0xAF, 0xDA, 0x02,
179 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07,
180 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0x0E, 0x06,
181 0xF4, 0x05, 0xE7, 0x07, 0xD6, 0x02, 0xF8, 0x05,
182 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80,
183 0x50, 0xAF, 0x97, 0xCF, 0x2F, 0x0C, 0x02, 0x00,
184 0x07, 0x06, 0x2F, 0x0C, 0x04, 0x00, 0x06, 0x06,
185 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07,
186 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0xE2, 0x05,
187 0xF4, 0x05, 0xE7, 0x07, 0xCE, 0x02, 0xF8, 0x05,
188 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80,
189 0x51, 0xAF, 0x97, 0xCF, 0x9F, 0xAF, 0x66, 0x04,
190 0x9F, 0xAF, 0x1A, 0x03, 0x59, 0xAF, 0x97, 0xCF,
191 0xC0, 0x07, 0x0E, 0x00, 0xC1, 0x0B, 0x0C, 0x06,
192 0x41, 0xD1, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07,
193 0x3C, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0x68, 0x00,
194 0xC0, 0x07, 0x3B, 0x00, 0x9F, 0xAF, 0x44, 0x05,
195 0x6F, 0x00, 0x0C, 0x06, 0x68, 0x00, 0xE0, 0x07,
196 0x04, 0x01, 0xE8, 0x0B, 0x0A, 0x06, 0xE8, 0x07,
197 0x00, 0x00, 0xE0, 0x07, 0x00, 0x02, 0xE0, 0x07,
198 0xEC, 0x01, 0xE0, 0x07, 0xFC, 0xFF, 0x97, 0xCF,
199 0xE7, 0x07, 0xFF, 0xFF, 0xFA, 0x05, 0xEF, 0x07,
200 0x00, 0x00, 0x0B, 0x06, 0xE7, 0x07, 0x0E, 0x06,
201 0x24, 0x01, 0xE7, 0x07, 0x0E, 0x06, 0xFE, 0x05,
202 0xE7, 0x07, 0x40, 0x00, 0x26, 0x01, 0xE7, 0x07,
203 0x40, 0x00, 0x04, 0x06, 0xE7, 0x07, 0x07, 0x00,
204 0x92, 0xC0, 0x97, 0xCF, 0xEF, 0x07, 0x02, 0x00,
205 0x0B, 0x06, 0x9F, 0xAF, 0x78, 0x01, 0xEF, 0x77,
206 0x80, 0x00, 0x07, 0x06, 0x9F, 0xC0, 0x14, 0x04,
207 0xEF, 0x77, 0x01, 0x00, 0x07, 0x06, 0x37, 0xC0,
208 0xEF, 0x77, 0x01, 0x00, 0x0D, 0x06, 0x0F, 0xC1,
209 0xEF, 0x07, 0x01, 0x00, 0x0D, 0x06, 0xC0, 0x07,
210 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, 0x9F, 0xAF,
211 0x28, 0x05, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07,
212 0x02, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07,
213 0xFF, 0x4F, 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07,
214 0x38, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x77,
215 0x03, 0x00, 0x02, 0xC1, 0x08, 0xDA, 0x75, 0xC1,
216 0xC1, 0x77, 0x01, 0x00, 0x0A, 0xC1, 0xC0, 0x07,
217 0x01, 0x00, 0xC1, 0x07, 0x02, 0x00, 0x9F, 0xAF,
218 0x28, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x06, 0x06,
219 0x2C, 0xCF, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07,
220 0x04, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xEF, 0x07,
221 0x00, 0x00, 0x06, 0x06, 0x22, 0xCF, 0xEF, 0x07,
222 0x00, 0x00, 0x0D, 0x06, 0xEF, 0x57, 0x01, 0x00,
223 0x06, 0x06, 0x1B, 0xC0, 0xC0, 0x07, 0x01, 0x00,
224 0xC1, 0x07, 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05,
225 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00,
226 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, 0xFF, 0x4F,
227 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, 0x38, 0x00,
228 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x67, 0x03, 0x00,
229 0xC1, 0x57, 0x03, 0x00, 0x02, 0xC0, 0x08, 0xDA,
230 0x73, 0xC1, 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07,
231 0x12, 0x00, 0xEF, 0x57, 0x00, 0x00, 0x06, 0x06,
232 0x02, 0xC0, 0xC1, 0x07, 0x23, 0x00, 0x9F, 0xAF,
233 0x28, 0x05, 0xC0, 0x07, 0x14, 0x00, 0xC1, 0x0B,
234 0xEA, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07,
235 0x3E, 0x00, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x09,
236 0xE4, 0x05, 0xFA, 0x05, 0x27, 0xD8, 0xFA, 0x05,
237 0xE7, 0x07, 0x0E, 0x06, 0xFC, 0x05, 0xE7, 0x07,
238 0x4E, 0x06, 0x00, 0x06, 0xE7, 0x07, 0x40, 0x00,
239 0x02, 0x06, 0x9F, 0xAF, 0x66, 0x05, 0x9F, 0xAF,
240 0xC6, 0x00, 0x97, 0xCF, 0xC1, 0x0B, 0xE2, 0x05,
241 0x41, 0xD0, 0x01, 0xD2, 0xC1, 0x17, 0x23, 0x00,
242 0x9F, 0xAF, 0xDC, 0x04, 0xC0, 0x07, 0x04, 0x00,
243 0xC1, 0x0B, 0xE3, 0x05, 0x9F, 0xAF, 0x28, 0x05,
244 0xC0, 0x07, 0x06, 0x00, 0xC1, 0x09, 0xE6, 0x05,
245 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x07, 0x00,
246 0xC1, 0x09, 0xE6, 0x05, 0xC1, 0xD1, 0x9F, 0xAF,
247 0x28, 0x05, 0xC0, 0x07, 0x0B, 0x00, 0xC1, 0x09,
248 0xE8, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07,
249 0x0C, 0x00, 0xC1, 0x09, 0xE8, 0x05, 0xC1, 0xD1,
250 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0D, 0x00,
251 0xC1, 0x07, 0x09, 0x00, 0x9F, 0xAF, 0x28, 0x05,
252 0xC0, 0x07, 0x03, 0x00, 0xC1, 0x07, 0x32, 0x00,
253 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0F, 0x00,
254 0xC1, 0x07, 0x00, 0x00, 0x9F, 0xAF, 0x28, 0x05,
255 0x97, 0xCF, 0xE7, 0x67, 0xFF, 0xD9, 0x24, 0xC0,
256 0xC8, 0x07, 0x0A, 0x00, 0x40, 0x00, 0xC0, 0x67,
257 0x00, 0x02, 0x27, 0x80, 0x24, 0xC0, 0xE7, 0x87,
258 0x00, 0x04, 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xF9,
259 0x24, 0xC0, 0x01, 0xD2, 0x08, 0xDA, 0x72, 0xC1,
260 0xE7, 0x87, 0x00, 0x20, 0x24, 0xC0, 0x97, 0xCF,
261 0x27, 0x00, 0x1E, 0xC0, 0xE7, 0x87, 0xFF, 0x00,
262 0x22, 0xC0, 0xE7, 0x67, 0x7F, 0xFF, 0x24, 0xC0,
263 0xE7, 0x87, 0x80, 0x00, 0x24, 0xC0, 0xE7, 0x87,
264 0x80, 0x00, 0x24, 0xC0, 0x97, 0xCF, 0x9F, 0xAF,
265 0x0A, 0x05, 0x67, 0x00, 0x1E, 0xC0, 0xE7, 0x67,
266 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00,
267 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0,
268 0x97, 0xCF, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x67,
269 0x00, 0xFF, 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE,
270 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0,
271 0xC1, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01,
272 0x24, 0xC0, 0x97, 0xCF, 0xC0, 0x07, 0x40, 0x00,
273 0xC8, 0x09, 0xFC, 0x05, 0xE7, 0x67, 0x00, 0xFF,
274 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0,
275 0xE7, 0x67, 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x67,
276 0xBF, 0xFF, 0x24, 0xC0, 0x00, 0xDA, 0xE8, 0x09,
277 0x20, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0,
278 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, 0x00, 0xDA,
279 0xE8, 0x09, 0x20, 0xC0, 0x6D, 0xC1, 0xE7, 0x87,
280 0x00, 0x01, 0x24, 0xC0, 0x97, 0xCF, 0xE7, 0x07,
281 0x32, 0x00, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80,
282 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0xE7, 0x07,
283 0x20, 0x4E, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80,
284 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0x09, 0x02,
285 0x19, 0x00, 0x01, 0x01, 0x00, 0x80, 0x96, 0x09,
286 0x04, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
287 0x07, 0x05, 0x81, 0x02, 0x40, 0x00, 0x00, 0x00,
288 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
289 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
290 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
291 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
292 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
293 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
294 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
295 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
296 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
297 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
298 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
299 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
300 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
301 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
302 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
303 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
304 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
305 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
306 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
307 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
308 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
309 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
312 static unsigned char setup5[] = {
313 0xB6, 0xC3, 0x2F, 0x01, 0x03, 0x64, 0x0E, 0x00,
314 0x14, 0x00, 0x1A, 0x00, 0x20, 0x00, 0x26, 0x00,
315 0x4A, 0x00, 0x64, 0x00, 0x6A, 0x00, 0x92, 0x00,
316 0x9A, 0x00, 0xA0, 0x00, 0xB2, 0x00, 0xB8, 0x00,
317 0xBE, 0x00, 0xC2, 0x00, 0xC8, 0x00, 0xCE, 0x00,
318 0xDC, 0x00, 0xDA, 0x00, 0xE2, 0x00, 0xE0, 0x00,
319 0xE8, 0x00, 0xE6, 0x00, 0xEE, 0x00, 0xEC, 0x00,
320 0xF2, 0x00, 0xF8, 0x00, 0x02, 0x01, 0x0A, 0x01,
321 0x0E, 0x01, 0x12, 0x01, 0x1E, 0x01, 0x22, 0x01,
322 0x28, 0x01, 0x2C, 0x01, 0x32, 0x01, 0x36, 0x01,
323 0x44, 0x01, 0x50, 0x01, 0x5E, 0x01, 0x72, 0x01,
324 0x76, 0x01, 0x7A, 0x01, 0x80, 0x01, 0x88, 0x01,
325 0x8C, 0x01, 0x94, 0x01, 0x9C, 0x01, 0xA0, 0x01,
326 0xA4, 0x01, 0xAA, 0x01, 0xB0, 0x01, 0xB4, 0x01,
327 0xBA, 0x01, 0xD0, 0x01, 0xDA, 0x01, 0xF6, 0x01,
328 0xFA, 0x01, 0x02, 0x02, 0x34, 0x02, 0x3C, 0x02,
329 0x44, 0x02, 0x4A, 0x02, 0x50, 0x02, 0x56, 0x02,
330 0x74, 0x02, 0x78, 0x02, 0x7E, 0x02, 0x84, 0x02,
331 0x8A, 0x02, 0x88, 0x02, 0x90, 0x02, 0x8E, 0x02,
332 0x94, 0x02, 0xA2, 0x02, 0xA8, 0x02, 0xAE, 0x02,
333 0xB4, 0x02, 0xBA, 0x02, 0xB8, 0x02, 0xC0, 0x02,
334 0xBE, 0x02, 0xC4, 0x02, 0xD0, 0x02, 0xD4, 0x02,
335 0xE0, 0x02, 0xE6, 0x02, 0xEE, 0x02, 0xF8, 0x02,
336 0xFC, 0x02, 0x06, 0x03, 0x1E, 0x03, 0x24, 0x03,
337 0x28, 0x03, 0x30, 0x03, 0x2E, 0x03, 0x3C, 0x03,
338 0x4A, 0x03, 0x4E, 0x03, 0x54, 0x03, 0x58, 0x03,
339 0x5E, 0x03, 0x66, 0x03, 0x6E, 0x03, 0x7A, 0x03,
340 0x86, 0x03, 0x8E, 0x03, 0x96, 0x03, 0xB2, 0x03,
341 0xB8, 0x03, 0xC6, 0x03, 0xCC, 0x03, 0xD4, 0x03,
342 0xDA, 0x03, 0xE8, 0x03, 0xF4, 0x03, 0xFC, 0x03,
343 0x04, 0x04, 0x20, 0x04, 0x2A, 0x04, 0x32, 0x04,
344 0x36, 0x04, 0x3E, 0x04, 0x44, 0x04, 0x42, 0x04,
345 0x48, 0x04, 0x4E, 0x04, 0x4C, 0x04, 0x54, 0x04,
346 0x52, 0x04, 0x5A, 0x04, 0x5E, 0x04, 0x62, 0x04,
347 0x68, 0x04, 0x74, 0x04, 0x7C, 0x04, 0x80, 0x04,
348 0x88, 0x04, 0x8C, 0x04, 0x94, 0x04, 0x9A, 0x04,
349 0xA2, 0x04, 0xA6, 0x04, 0xAE, 0x04, 0xB4, 0x04,
350 0xC0, 0x04, 0xCC, 0x04, 0xD8, 0x04, 0x2A, 0x05,
351 0x46, 0x05, 0x6C, 0x05, 0x00, 0x00
354 /* rvmalloc / rvfree copied from usbvideo.c
356 * Not sure why these are not yet non-statics which I can reference through
357 * usbvideo.h the same as it is in 2.4.20. I bet this will get fixed sometime
361 static void *rvmalloc(unsigned long size)
366 size = PAGE_ALIGN(size);
367 mem = vmalloc_32(size);
371 memset(mem, 0, size); /* Clear the ram out, no junk to the user */
372 adr = (unsigned long) mem;
374 SetPageReserved(vmalloc_to_page((void *)adr));
382 static void rvfree(void *mem, unsigned long size)
389 adr = (unsigned long) mem;
390 while ((long) size > 0) {
391 ClearPageReserved(vmalloc_to_page((void *)adr));
398 struct vicam_camera {
399 u16 shutter_speed; // capture shutter speed
400 u16 gain; // capture gain
402 u8 *raw_image; // raw data captured from the camera
403 u8 *framebuf; // processed data in RGB24 format
404 u8 *cntrlbuf; // area used to send control msgs
406 struct video_device vdev; // v4l video device
407 struct usb_device *udev; // usb device
409 /* guard against simultaneous accesses to the camera */
410 struct semaphore cam_lock;
417 #if defined(CONFIG_VIDEO_PROC_FS)
418 struct proc_dir_entry *proc_dir;
423 static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id);
424 static void vicam_disconnect(struct usb_interface *intf);
425 static void read_frame(struct vicam_camera *cam, int framenum);
426 static void vicam_decode_color(const u8 *, u8 *);
428 static int __send_control_msg(struct vicam_camera *cam,
437 /* cp must be memory that has been allocated by kmalloc */
439 status = usb_control_msg(cam->udev,
440 usb_sndctrlpipe(cam->udev, 0),
442 USB_DIR_OUT | USB_TYPE_VENDOR |
443 USB_RECIP_DEVICE, value, index,
446 status = min(status, 0);
449 printk(KERN_INFO "Failed sending control message, error %d.\n",
456 static int send_control_msg(struct vicam_camera *cam,
463 int status = -ENODEV;
464 down(&cam->cam_lock);
466 status = __send_control_msg(cam, request, value,
473 initialize_camera(struct vicam_camera *cam)
479 { .data = setup1, .size = sizeof(setup1) },
480 { .data = setup2, .size = sizeof(setup2) },
481 { .data = setup3, .size = sizeof(setup3) },
482 { .data = setup4, .size = sizeof(setup4) },
483 { .data = setup5, .size = sizeof(setup5) },
484 { .data = setup3, .size = sizeof(setup3) },
485 { .data = NULL, .size = 0 }
490 for (i = 0, err = 0; firmware[i].data && !err; i++) {
491 memcpy(cam->cntrlbuf, firmware[i].data, firmware[i].size);
493 err = send_control_msg(cam, 0xff, 0, 0,
494 cam->cntrlbuf, firmware[i].size);
501 set_camera_power(struct vicam_camera *cam, int state)
505 if ((status = send_control_msg(cam, 0x50, state, 0, NULL, 0)) < 0)
509 send_control_msg(cam, 0x55, 1, 0, NULL, 0);
516 vicam_ioctl(struct inode *inode, struct file *file, unsigned int ioctlnr, unsigned long arg)
518 void __user *user_arg = (void __user *)arg;
519 struct vicam_camera *cam = file->private_data;
526 /* query capabilities */
529 struct video_capability b;
532 memset(&b, 0, sizeof(b));
533 strcpy(b.name, "ViCam-based Camera");
534 b.type = VID_TYPE_CAPTURE;
537 b.maxwidth = 320; /* VIDEOSIZE_CIF */
539 b.minwidth = 320; /* VIDEOSIZE_48_48 */
542 if (copy_to_user(user_arg, &b, sizeof(b)))
547 /* get/set video source - we are a camera and nothing else */
550 struct video_channel v;
552 DBG("VIDIOCGCHAN\n");
553 if (copy_from_user(&v, user_arg, sizeof(v))) {
557 if (v.channel != 0) {
563 strcpy(v.name, "Camera");
566 v.type = VIDEO_TYPE_CAMERA;
569 if (copy_to_user(user_arg, &v, sizeof(v)))
578 if (copy_from_user(&v, user_arg, sizeof(v)))
580 DBG("VIDIOCSCHAN %d\n", v);
582 if (retval == 0 && v != 0)
588 /* image properties */
591 struct video_picture vp;
592 DBG("VIDIOCGPICT\n");
593 memset(&vp, 0, sizeof (struct video_picture));
594 vp.brightness = cam->gain << 8;
596 vp.palette = VIDEO_PALETTE_RGB24;
597 if (copy_to_user(user_arg, &vp, sizeof (struct video_picture)))
604 struct video_picture vp;
606 if (copy_from_user(&vp, user_arg, sizeof(vp))) {
611 DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp.depth,
614 cam->gain = vp.brightness >> 8;
617 || vp.palette != VIDEO_PALETTE_RGB24)
623 /* get/set capture window */
626 struct video_window vw;
638 if (copy_to_user(user_arg, (void *)&vw, sizeof(vw)))
641 // I'm not sure what the deal with a capture window is, it is very poorly described
642 // in the doc. So I won't support it now.
649 struct video_window vw;
651 if (copy_from_user(&vw, user_arg, sizeof(vw))) {
656 DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height);
658 if ( vw.width != 320 || vw.height != 240 )
667 struct video_mbuf vm;
670 DBG("VIDIOCGMBUF\n");
671 memset(&vm, 0, sizeof (vm));
673 VICAM_MAX_FRAME_SIZE * VICAM_FRAMES;
674 vm.frames = VICAM_FRAMES;
675 for (i = 0; i < VICAM_FRAMES; i++)
676 vm.offsets[i] = VICAM_MAX_FRAME_SIZE * i;
678 if (copy_to_user(user_arg, (void *)&vm, sizeof(vm)))
686 struct video_mmap vm;
689 if (copy_from_user((void *)&vm, user_arg, sizeof(vm))) {
694 DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n",vm.frame,vm.width,vm.height,vm.format);
696 if ( vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24 )
699 // in theory right here we'd start the image capturing
700 // (fill in a bulk urb and submit it asynchronously)
702 // Instead we're going to do a total hack job for now and
703 // retrieve the frame in VIDIOCSYNC
712 if (copy_from_user((void *)&frame, user_arg, sizeof(int))) {
716 DBG("VIDIOCSYNC: %d\n", frame);
718 read_frame(cam, frame);
719 vicam_decode_color(cam->raw_image,
721 frame * VICAM_MAX_FRAME_SIZE );
726 /* pointless to implement overlay with this camera */
734 /* tuner interface - we have none */
742 /* audio interface - we have none */
748 retval = -ENOIOCTLCMD;
756 vicam_open(struct inode *inode, struct file *file)
758 struct video_device *dev = video_devdata(file);
759 struct vicam_camera *cam =
760 (struct vicam_camera *) dev->priv;
765 "vicam video_device improperly initialized");
768 /* the videodev_lock held above us protects us from
769 * simultaneous opens...for now. we probably shouldn't
770 * rely on this fact forever.
773 if (cam->open_count > 0) {
775 "vicam_open called on already opened camera");
779 cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL);
780 if (!cam->raw_image) {
784 cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES);
785 if (!cam->framebuf) {
786 kfree(cam->raw_image);
790 cam->cntrlbuf = kmalloc(PAGE_SIZE, GFP_KERNEL);
791 if (!cam->cntrlbuf) {
792 kfree(cam->raw_image);
793 rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES);
797 // First upload firmware, then turn the camera on
799 if (!cam->is_initialized) {
800 initialize_camera(cam);
802 cam->is_initialized = 1;
805 set_camera_power(cam, 1);
807 cam->needsDummyRead = 1;
810 file->private_data = cam;
816 vicam_close(struct inode *inode, struct file *file)
818 struct vicam_camera *cam = file->private_data;
820 struct usb_device *udev;
824 /* it's not the end of the world if
825 * we fail to turn the camera off.
828 set_camera_power(cam, 0);
830 kfree(cam->raw_image);
831 rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES);
832 kfree(cam->cntrlbuf);
834 down(&cam->cam_lock);
837 open_count = cam->open_count;
842 if (!open_count && !udev) {
849 static void vicam_decode_color(const u8 *data, u8 *rgb)
851 /* vicam_decode_color - Convert from Vicam Y-Cr-Cb to RGB
852 * Copyright (C) 2002 Monroe Williams (monroe@pobox.com)
860 data += VICAM_HEADER_SIZE;
862 for( i = 0; i < 240; i++, data += 512 ) {
863 const int y = ( i * 242 ) / 240;
868 if ( y == 242 - 1 ) {
875 for ( j = 0; j < 320; j++, rgb += 3 ) {
876 const int x = ( j * 512 ) / 320;
877 const u8 * const src = &data[x];
879 if ( x == 512 - 1 ) {
883 Cr = ( src[prevX] - src[0] ) +
884 ( src[nextX] - src[0] );
887 Cb = ( src[prevY] - src[prevX + prevY] ) +
888 ( src[prevY] - src[nextX + prevY] ) +
889 ( src[nextY] - src[prevX + nextY] ) +
890 ( src[nextY] - src[nextX + nextY] );
893 Y = 1160 * ( src[0] + ( Cr / 2 ) - 16 );
901 if ( ( x ^ i ) & 1 ) {
906 rgb[0] = clamp( ( ( Y + ( 2017 * Cb ) ) +
907 500 ) / 900, 0, 255 );
908 rgb[1] = clamp( ( ( Y - ( 392 * Cb ) -
910 500 ) / 1000, 0, 255 );
911 rgb[2] = clamp( ( ( Y + ( 1594 * Cr ) ) +
912 500 ) / 1300, 0, 255 );
922 read_frame(struct vicam_camera *cam, int framenum)
924 unsigned char *request = cam->cntrlbuf;
929 if (cam->needsDummyRead) {
930 cam->needsDummyRead = 0;
931 read_frame(cam, framenum);
934 memset(request, 0, 16);
935 request[0] = cam->gain; // 0 = 0% gain, FF = 100% gain
937 request[1] = 0; // 512x242 capture
939 request[2] = 0x90; // the function of these two bytes
940 request[3] = 0x07; // is not yet understood
942 if (cam->shutter_speed > 60) {
945 ((-15631900 / cam->shutter_speed) + 260533) / 1000;
946 request[4] = realShutter & 0xFF;
947 request[5] = (realShutter >> 8) & 0xFF;
952 realShutter = 15600 / cam->shutter_speed - 1;
955 request[6] = realShutter & 0xFF;
956 request[7] = realShutter >> 8;
959 // Per John Markus Bjørndalen, byte at index 8 causes problems if it isn't 0
961 // bytes 9-15 do not seem to affect exposure or image quality
963 down(&cam->cam_lock);
969 n = __send_control_msg(cam, 0x51, 0x80, 0, request, 16);
973 " Problem sending frame capture control message");
977 n = usb_bulk_msg(cam->udev,
978 usb_rcvbulkpipe(cam->udev, cam->bulkEndpoint),
980 512 * 242 + 128, &actual_length, 10000);
983 printk(KERN_ERR "Problem during bulk read of frame data: %d\n",
992 vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos )
994 struct vicam_camera *cam = file->private_data;
996 DBG("read %d bytes.\n", (int) count);
998 if (*ppos >= VICAM_MAX_FRAME_SIZE) {
1005 vicam_decode_color(cam->raw_image,
1007 0 * VICAM_MAX_FRAME_SIZE);
1010 count = min_t(size_t, count, VICAM_MAX_FRAME_SIZE - *ppos);
1012 if (copy_to_user(buf, &cam->framebuf[*ppos], count)) {
1018 if (count == VICAM_MAX_FRAME_SIZE) {
1027 vicam_mmap(struct file *file, struct vm_area_struct *vma)
1029 // TODO: allocate the raw frame buffer if necessary
1030 unsigned long page, pos;
1031 unsigned long start = vma->vm_start;
1032 unsigned long size = vma->vm_end-vma->vm_start;
1033 struct vicam_camera *cam = file->private_data;
1038 DBG("vicam_mmap: %ld\n", size);
1040 /* We let mmap allocate as much as it wants because Linux was adding 2048 bytes
1041 * to the size the application requested for mmap and it was screwing apps up.
1042 if (size > VICAM_FRAMES*VICAM_MAX_FRAME_SIZE)
1046 pos = (unsigned long)cam->framebuf;
1048 page = vmalloc_to_pfn((void *)pos);
1049 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED))
1054 if (size > PAGE_SIZE)
1063 #if defined(CONFIG_VIDEO_PROC_FS)
1065 static struct proc_dir_entry *vicam_proc_root = NULL;
1067 static int vicam_read_helper(char *page, char **start, off_t off,
1068 int count, int *eof, int value)
1073 out += sprintf(out, "%d",value);
1084 *start = page + off;
1088 static int vicam_read_proc_shutter(char *page, char **start, off_t off,
1089 int count, int *eof, void *data)
1091 return vicam_read_helper(page,start,off,count,eof,
1092 ((struct vicam_camera *)data)->shutter_speed);
1095 static int vicam_read_proc_gain(char *page, char **start, off_t off,
1096 int count, int *eof, void *data)
1098 return vicam_read_helper(page,start,off,count,eof,
1099 ((struct vicam_camera *)data)->gain);
1103 vicam_write_proc_shutter(struct file *file, const char *buffer,
1104 unsigned long count, void *data)
1108 struct vicam_camera *cam = (struct vicam_camera *) data;
1113 if (copy_from_user(kbuf, buffer, count))
1116 stmp = (u16) simple_strtoul(kbuf, NULL, 10);
1117 if (stmp < 4 || stmp > 32000)
1120 cam->shutter_speed = stmp;
1126 vicam_write_proc_gain(struct file *file, const char *buffer,
1127 unsigned long count, void *data)
1132 struct vicam_camera *cam = (struct vicam_camera *) data;
1137 if (copy_from_user(kbuf, buffer, count))
1140 gtmp = (u16) simple_strtoul(kbuf, NULL, 10);
1149 vicam_create_proc_root(void)
1151 vicam_proc_root = create_proc_entry("video/vicam", S_IFDIR, 0);
1153 if (vicam_proc_root)
1154 vicam_proc_root->owner = THIS_MODULE;
1157 "could not create /proc entry for vicam!");
1161 vicam_destroy_proc_root(void)
1163 if (vicam_proc_root)
1164 remove_proc_entry("video/vicam", 0);
1168 vicam_create_proc_entry(struct vicam_camera *cam)
1171 struct proc_dir_entry *ent;
1173 DBG(KERN_INFO "vicam: creating proc entry\n");
1175 if (!vicam_proc_root || !cam) {
1177 "vicam: could not create proc entry, %s pointer is null.\n",
1178 (!cam ? "camera" : "root"));
1182 sprintf(name, "video%d", cam->vdev.minor);
1184 cam->proc_dir = create_proc_entry(name, S_IFDIR, vicam_proc_root);
1186 if ( !cam->proc_dir )
1187 return; // FIXME: We should probably return an error here
1189 ent = create_proc_entry("shutter", S_IFREG | S_IRUGO | S_IWUSR,
1193 ent->read_proc = vicam_read_proc_shutter;
1194 ent->write_proc = vicam_write_proc_shutter;
1198 ent = create_proc_entry("gain", S_IFREG | S_IRUGO | S_IWUSR,
1202 ent->read_proc = vicam_read_proc_gain;
1203 ent->write_proc = vicam_write_proc_gain;
1209 vicam_destroy_proc_entry(void *ptr)
1211 struct vicam_camera *cam = (struct vicam_camera *) ptr;
1214 if ( !cam->proc_dir )
1217 sprintf(name, "video%d", cam->vdev.minor);
1218 remove_proc_entry("shutter", cam->proc_dir);
1219 remove_proc_entry("gain", cam->proc_dir);
1220 remove_proc_entry(name,vicam_proc_root);
1221 cam->proc_dir = NULL;
1226 static inline void vicam_create_proc_root(void) { }
1227 static inline void vicam_destroy_proc_root(void) { }
1228 static inline void vicam_create_proc_entry(struct vicam_camera *cam) { }
1229 static inline void vicam_destroy_proc_entry(void *ptr) { }
1232 static struct file_operations vicam_fops = {
1233 .owner = THIS_MODULE,
1235 .release = vicam_close,
1238 .ioctl = vicam_ioctl,
1239 .llseek = no_llseek,
1242 static struct video_device vicam_template = {
1243 .owner = THIS_MODULE,
1244 .name = "ViCam-based USB Camera",
1245 .type = VID_TYPE_CAPTURE,
1246 .hardware = VID_HARDWARE_VICAM,
1247 .fops = &vicam_fops,
1251 /* table of devices that work with this driver */
1252 static struct usb_device_id vicam_table[] = {
1253 {USB_DEVICE(USB_VICAM_VENDOR_ID, USB_VICAM_PRODUCT_ID)},
1254 {} /* Terminating entry */
1257 MODULE_DEVICE_TABLE(usb, vicam_table);
1259 static struct usb_driver vicam_driver = {
1260 .owner = THIS_MODULE,
1262 .probe = vicam_probe,
1263 .disconnect = vicam_disconnect,
1264 .id_table = vicam_table
1269 * @intf: the interface
1270 * @id: the device id
1272 * Called by the usb core when a new device is connected that it thinks
1273 * this driver might be interested in.
1276 vicam_probe( struct usb_interface *intf, const struct usb_device_id *id)
1278 struct usb_device *dev = interface_to_usbdev(intf);
1279 int bulkEndpoint = 0;
1280 const struct usb_host_interface *interface;
1281 const struct usb_endpoint_descriptor *endpoint;
1282 struct vicam_camera *cam;
1284 printk(KERN_INFO "ViCam based webcam connected\n");
1286 interface = intf->cur_altsetting;
1288 DBG(KERN_DEBUG "Interface %d. has %u. endpoints!\n",
1289 interface->desc.bInterfaceNumber, (unsigned) (interface->desc.bNumEndpoints));
1290 endpoint = &interface->endpoint[0].desc;
1292 if ((endpoint->bEndpointAddress & 0x80) &&
1293 ((endpoint->bmAttributes & 3) == 0x02)) {
1294 /* we found a bulk in endpoint */
1295 bulkEndpoint = endpoint->bEndpointAddress;
1298 "No bulk in endpoint was found ?! (this is bad)\n");
1302 kmalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) {
1304 "could not allocate kernel memory for vicam_camera struct\n");
1308 memset(cam, 0, sizeof (struct vicam_camera));
1310 cam->shutter_speed = 15;
1312 init_MUTEX(&cam->cam_lock);
1314 memcpy(&cam->vdev, &vicam_template,
1315 sizeof (vicam_template));
1316 cam->vdev.priv = cam; // sort of a reverse mapping for those functions that get vdev only
1319 cam->bulkEndpoint = bulkEndpoint;
1321 if (video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1) == -1) {
1323 printk(KERN_WARNING "video_register_device failed\n");
1327 vicam_create_proc_entry(cam);
1329 printk(KERN_INFO "ViCam webcam driver now controlling video device %d\n",cam->vdev.minor);
1331 usb_set_intfdata (intf, cam);
1337 vicam_disconnect(struct usb_interface *intf)
1340 struct vicam_camera *cam = usb_get_intfdata (intf);
1341 usb_set_intfdata (intf, NULL);
1343 /* we must unregister the device before taking its
1344 * cam_lock. This is because the video open call
1345 * holds the same lock as video unregister. if we
1346 * unregister inside of the cam_lock and open also
1347 * uses the cam_lock, we get deadlock.
1350 video_unregister_device(&cam->vdev);
1352 /* stop the camera from being used */
1354 down(&cam->cam_lock);
1356 /* mark the camera as gone */
1360 vicam_destroy_proc_entry(cam);
1362 /* the only thing left to do is synchronize with
1363 * our close/release function on who should release
1364 * the camera memory. if there are any users using the
1365 * camera, it's their job. if there are no users,
1369 open_count = cam->open_count;
1377 printk(KERN_DEBUG "ViCam-based WebCam disconnected\n");
1383 usb_vicam_init(void)
1386 DBG(KERN_INFO "ViCam-based WebCam driver startup\n");
1387 vicam_create_proc_root();
1388 retval = usb_register(&vicam_driver);
1390 printk(KERN_WARNING "usb_register failed!\n");
1395 usb_vicam_exit(void)
1398 "ViCam-based WebCam driver shutdown\n");
1400 usb_deregister(&vicam_driver);
1401 vicam_destroy_proc_root();
1404 module_init(usb_vicam_init);
1405 module_exit(usb_vicam_exit);
1407 MODULE_AUTHOR(DRIVER_AUTHOR);
1408 MODULE_DESCRIPTION(DRIVER_DESC);
1409 MODULE_LICENSE("GPL");