Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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) |
| 8 | * |
| 9 | * Supports 3COM HomeConnect PC Digital WebCam |
Bas Bloemsaat | 81409ed | 2006-09-03 09:47:41 -0300 | [diff] [blame] | 10 | * Supports Compro PS39U WebCam |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * This source code is based heavily on the CPiA webcam driver which was |
| 27 | * written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt |
| 28 | * |
| 29 | * Portions of this code were also copied from usbvideo.c |
| 30 | * |
Michael Opdenacker | 59c5159 | 2007-05-09 08:57:56 +0200 | [diff] [blame] | 31 | * Special thanks to the whole team at Sourceforge for help making |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | * this driver become a reality. Notably: |
| 33 | * Andy Armstrong who reverse engineered the color encoding and |
| 34 | * Pavel Machek and Chris Cheney who worked on reverse engineering the |
| 35 | * camera controls and wrote the first generation driver. |
| 36 | */ |
| 37 | |
| 38 | #include <linux/kernel.h> |
| 39 | #include <linux/module.h> |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/videodev.h> |
| 42 | #include <linux/usb.h> |
| 43 | #include <linux/vmalloc.h> |
| 44 | #include <linux/slab.h> |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 45 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include "usbvideo.h" |
| 47 | |
| 48 | // #define VICAM_DEBUG |
| 49 | |
| 50 | #ifdef VICAM_DEBUG |
Harvey Harrison | 4126a8f | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 51 | #define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __func__, lineno, ##args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args) |
| 53 | #else |
| 54 | #define DBG(fmn,args...) do {} while(0) |
| 55 | #endif |
| 56 | |
| 57 | #define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org" |
| 58 | #define DRIVER_DESC "ViCam WebCam Driver" |
| 59 | |
| 60 | /* Define these values to match your device */ |
| 61 | #define USB_VICAM_VENDOR_ID 0x04c1 |
| 62 | #define USB_VICAM_PRODUCT_ID 0x009d |
Bas Bloemsaat | 81409ed | 2006-09-03 09:47:41 -0300 | [diff] [blame] | 63 | #define USB_COMPRO_VENDOR_ID 0x0602 |
| 64 | #define USB_COMPRO_PRODUCT_ID 0x1001 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | #define VICAM_BYTES_PER_PIXEL 3 |
| 67 | #define VICAM_MAX_READ_SIZE (512*242+128) |
| 68 | #define VICAM_MAX_FRAME_SIZE (VICAM_BYTES_PER_PIXEL*320*240) |
| 69 | #define VICAM_FRAMES 2 |
| 70 | |
| 71 | #define VICAM_HEADER_SIZE 64 |
| 72 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | /* Not sure what all the bytes in these char |
| 74 | * arrays do, but they're necessary to make |
| 75 | * the camera work. |
| 76 | */ |
| 77 | |
| 78 | static unsigned char setup1[] = { |
| 79 | 0xB6, 0xC3, 0x1F, 0x00, 0x02, 0x64, 0xE7, 0x67, |
| 80 | 0xFD, 0xFF, 0x0E, 0xC0, 0xE7, 0x09, 0xDE, 0x00, |
| 81 | 0x8E, 0x00, 0xC0, 0x09, 0x40, 0x03, 0xC0, 0x17, |
| 82 | 0x44, 0x03, 0x4B, 0xAF, 0xC0, 0x07, 0x00, 0x00, |
| 83 | 0x4B, 0xAF, 0x97, 0xCF, 0x00, 0x00 |
| 84 | }; |
| 85 | |
| 86 | static unsigned char setup2[] = { |
| 87 | 0xB6, 0xC3, 0x03, 0x00, 0x03, 0x64, 0x18, 0x00, |
| 88 | 0x00, 0x00 |
| 89 | }; |
| 90 | |
| 91 | static unsigned char setup3[] = { |
| 92 | 0xB6, 0xC3, 0x01, 0x00, 0x06, 0x64, 0x00, 0x00 |
| 93 | }; |
| 94 | |
| 95 | static unsigned char setup4[] = { |
| 96 | 0xB6, 0xC3, 0x8F, 0x06, 0x02, 0x64, 0xE7, 0x07, |
| 97 | 0x00, 0x00, 0x08, 0xC0, 0xE7, 0x07, 0x00, 0x00, |
| 98 | 0x3E, 0xC0, 0xE7, 0x07, 0x54, 0x01, 0xAA, 0x00, |
| 99 | 0xE7, 0x07, 0xC8, 0x05, 0xB6, 0x00, 0xE7, 0x07, |
| 100 | 0x42, 0x01, 0xD2, 0x00, 0xE7, 0x07, 0x7C, 0x00, |
| 101 | 0x16, 0x00, 0xE7, 0x07, 0x56, 0x00, 0x18, 0x00, |
| 102 | 0xE7, 0x07, 0x06, 0x00, 0x92, 0xC0, 0xE7, 0x07, |
| 103 | 0x00, 0x00, 0x1E, 0xC0, 0xE7, 0x07, 0xFF, 0xFF, |
| 104 | 0x22, 0xC0, 0xE7, 0x07, 0x04, 0x00, 0x24, 0xC0, |
| 105 | 0xE7, 0x07, 0xEC, 0x27, 0x28, 0xC0, 0xE7, 0x07, |
| 106 | 0x16, 0x01, 0x8E, 0x00, 0xE7, 0x87, 0x01, 0x00, |
| 107 | 0x0E, 0xC0, 0x97, 0xCF, 0xD7, 0x09, 0x00, 0xC0, |
| 108 | 0xE7, 0x77, 0x01, 0x00, 0x92, 0xC0, 0x09, 0xC1, |
| 109 | 0xE7, 0x09, 0xFE, 0x05, 0x24, 0x01, 0xE7, 0x09, |
| 110 | 0x04, 0x06, 0x26, 0x01, 0xE7, 0x07, 0x07, 0x00, |
| 111 | 0x92, 0xC0, 0xE7, 0x05, 0x00, 0xC0, 0xC0, 0xDF, |
| 112 | 0x97, 0xCF, 0x17, 0x00, 0x57, 0x00, 0x17, 0x02, |
| 113 | 0xD7, 0x09, 0x00, 0xC0, 0xE7, 0x77, 0x01, 0x00, |
| 114 | 0x92, 0xC0, 0x0A, 0xC1, 0xE7, 0x57, 0xFF, 0xFF, |
| 115 | 0xFA, 0x05, 0x0D, 0xC0, 0xE7, 0x57, 0x00, 0x00, |
| 116 | 0xFA, 0x05, 0x0F, 0xC0, 0x9F, 0xAF, 0xC6, 0x00, |
| 117 | 0xE7, 0x05, 0x00, 0xC0, 0xC8, 0x05, 0xC1, 0x05, |
| 118 | 0xC0, 0x05, 0xC0, 0xDF, 0x97, 0xCF, 0x27, 0xDA, |
| 119 | 0xFA, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x0B, 0x06, |
| 120 | 0x73, 0xCF, 0x9F, 0xAF, 0x78, 0x01, 0x9F, 0xAF, |
| 121 | 0x1A, 0x03, 0x6E, 0xCF, 0xE7, 0x09, 0xFC, 0x05, |
| 122 | 0x24, 0x01, 0xE7, 0x09, 0x02, 0x06, 0x26, 0x01, |
| 123 | 0xE7, 0x07, 0x07, 0x00, 0x92, 0xC0, 0xE7, 0x09, |
| 124 | 0xFC, 0x05, 0xFE, 0x05, 0xE7, 0x09, 0x02, 0x06, |
| 125 | 0x04, 0x06, 0xE7, 0x09, 0x00, 0x06, 0xFC, 0x05, |
| 126 | 0xE7, 0x09, 0xFE, 0x05, 0x00, 0x06, 0x27, 0xDA, |
| 127 | 0xFA, 0x05, 0xE7, 0x57, 0x01, 0x00, 0xFA, 0x05, |
| 128 | 0x02, 0xCA, 0x04, 0xC0, 0x97, 0xCF, 0x9F, 0xAF, |
| 129 | 0x66, 0x05, 0x97, 0xCF, 0xE7, 0x07, 0x40, 0x00, |
| 130 | 0x02, 0x06, 0xC8, 0x09, 0xFC, 0x05, 0x9F, 0xAF, |
| 131 | 0xDA, 0x02, 0x97, 0xCF, 0xCF, 0x17, 0x02, 0x00, |
| 132 | 0xEF, 0x57, 0x81, 0x00, 0x09, 0x06, 0x9F, 0xA0, |
| 133 | 0xB6, 0x01, 0xEF, 0x57, 0x80, 0x00, 0x09, 0x06, |
| 134 | 0x9F, 0xA0, 0x40, 0x02, 0xEF, 0x57, 0x01, 0x00, |
| 135 | 0x0B, 0x06, 0x9F, 0xA0, 0x46, 0x03, 0xE7, 0x07, |
| 136 | 0x01, 0x00, 0x0A, 0xC0, 0x46, 0xAF, 0x47, 0xAF, |
| 137 | 0x9F, 0xAF, 0x40, 0x02, 0xE7, 0x07, 0x2E, 0x00, |
| 138 | 0x0A, 0xC0, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06, |
| 139 | 0x97, 0xCF, 0x00, 0x0E, 0x01, 0x00, 0xC0, 0x57, |
| 140 | 0x51, 0x00, 0x9F, 0xC0, 0x9E, 0x02, 0xC0, 0x57, |
| 141 | 0x50, 0x00, 0x20, 0xC0, 0xC0, 0x57, 0x55, 0x00, |
| 142 | 0x12, 0xC0, 0xC0, 0x57, 0x56, 0x00, 0x9F, 0xC0, |
| 143 | 0x72, 0x02, 0x9F, 0xCF, 0xD6, 0x02, 0xC1, 0x0B, |
| 144 | 0x08, 0x06, 0x01, 0xD0, 0x6F, 0x90, 0x08, 0x06, |
| 145 | 0xC0, 0x07, 0x08, 0x00, 0xC1, 0x0B, 0x08, 0x06, |
| 146 | 0x9F, 0xAF, 0x28, 0x05, 0x97, 0xCF, 0x2F, 0x0E, |
| 147 | 0x02, 0x00, 0x08, 0x06, 0xC0, 0x07, 0x08, 0x00, |
| 148 | 0xC1, 0x0B, 0x08, 0x06, 0x9F, 0xAF, 0x28, 0x05, |
| 149 | 0x9F, 0xCF, 0xD6, 0x02, 0x2F, 0x0E, 0x02, 0x00, |
| 150 | 0x09, 0x06, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06, |
| 151 | 0x9F, 0xCF, 0xD6, 0x02, 0xEF, 0x67, 0x7F, 0xFF, |
| 152 | 0x09, 0x06, 0xE7, 0x67, 0xFF, 0xFD, 0x22, 0xC0, |
| 153 | 0xE7, 0x67, 0xEF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, |
| 154 | 0x10, 0x00, 0x28, 0xC0, 0x9F, 0xAF, 0xB8, 0x05, |
| 155 | 0xE7, 0x87, 0xE0, 0x21, 0x24, 0xC0, 0x9F, 0xAF, |
| 156 | 0xA8, 0x05, 0xE7, 0x87, 0x08, 0x00, 0x24, 0xC0, |
| 157 | 0xE7, 0x67, 0xDF, 0xFF, 0x24, 0xC0, 0xC8, 0x07, |
| 158 | 0x0A, 0x00, 0xC0, 0x07, 0x00, 0x00, 0xC1, 0x07, |
| 159 | 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0x9F, 0xAF, |
| 160 | 0xB8, 0x05, 0xC0, 0x07, 0x9E, 0x00, 0x9F, 0xAF, |
| 161 | 0x44, 0x05, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, |
| 162 | 0xC0, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01, |
| 163 | 0x24, 0xC0, 0xC0, 0x77, 0x00, 0x02, 0x0F, 0xC1, |
| 164 | 0xE7, 0x67, 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x67, |
| 165 | 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x08, 0x00, |
| 166 | 0x24, 0xC0, 0x08, 0xDA, 0x5E, 0xC1, 0xEF, 0x07, |
| 167 | 0x80, 0x00, 0x09, 0x06, 0x97, 0xCF, 0xEF, 0x07, |
| 168 | 0x01, 0x00, 0x0A, 0x06, 0x97, 0xCF, 0xEF, 0x07, |
| 169 | 0x00, 0x00, 0x0B, 0x06, 0xEF, 0x07, 0x00, 0x00, |
| 170 | 0x0A, 0x06, 0xEF, 0x67, 0x7F, 0xFF, 0x09, 0x06, |
| 171 | 0xEF, 0x07, 0x00, 0x00, 0x0D, 0x06, 0xE7, 0x67, |
| 172 | 0xEF, 0xFF, 0x28, 0xC0, 0xE7, 0x67, 0x17, 0xD8, |
| 173 | 0x24, 0xC0, 0xE7, 0x07, 0x00, 0x00, 0x1E, 0xC0, |
| 174 | 0xE7, 0x07, 0xFF, 0xFF, 0x22, 0xC0, 0x97, 0xCF, |
| 175 | 0xC8, 0x07, 0x0E, 0x06, 0x9F, 0xAF, 0xDA, 0x02, |
| 176 | 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07, |
| 177 | 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0x0E, 0x06, |
| 178 | 0xF4, 0x05, 0xE7, 0x07, 0xD6, 0x02, 0xF8, 0x05, |
| 179 | 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80, |
| 180 | 0x50, 0xAF, 0x97, 0xCF, 0x2F, 0x0C, 0x02, 0x00, |
| 181 | 0x07, 0x06, 0x2F, 0x0C, 0x04, 0x00, 0x06, 0x06, |
| 182 | 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07, |
| 183 | 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0xE2, 0x05, |
| 184 | 0xF4, 0x05, 0xE7, 0x07, 0xCE, 0x02, 0xF8, 0x05, |
| 185 | 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80, |
| 186 | 0x51, 0xAF, 0x97, 0xCF, 0x9F, 0xAF, 0x66, 0x04, |
| 187 | 0x9F, 0xAF, 0x1A, 0x03, 0x59, 0xAF, 0x97, 0xCF, |
| 188 | 0xC0, 0x07, 0x0E, 0x00, 0xC1, 0x0B, 0x0C, 0x06, |
| 189 | 0x41, 0xD1, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, |
| 190 | 0x3C, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0x68, 0x00, |
| 191 | 0xC0, 0x07, 0x3B, 0x00, 0x9F, 0xAF, 0x44, 0x05, |
| 192 | 0x6F, 0x00, 0x0C, 0x06, 0x68, 0x00, 0xE0, 0x07, |
| 193 | 0x04, 0x01, 0xE8, 0x0B, 0x0A, 0x06, 0xE8, 0x07, |
| 194 | 0x00, 0x00, 0xE0, 0x07, 0x00, 0x02, 0xE0, 0x07, |
| 195 | 0xEC, 0x01, 0xE0, 0x07, 0xFC, 0xFF, 0x97, 0xCF, |
| 196 | 0xE7, 0x07, 0xFF, 0xFF, 0xFA, 0x05, 0xEF, 0x07, |
| 197 | 0x00, 0x00, 0x0B, 0x06, 0xE7, 0x07, 0x0E, 0x06, |
| 198 | 0x24, 0x01, 0xE7, 0x07, 0x0E, 0x06, 0xFE, 0x05, |
| 199 | 0xE7, 0x07, 0x40, 0x00, 0x26, 0x01, 0xE7, 0x07, |
| 200 | 0x40, 0x00, 0x04, 0x06, 0xE7, 0x07, 0x07, 0x00, |
| 201 | 0x92, 0xC0, 0x97, 0xCF, 0xEF, 0x07, 0x02, 0x00, |
| 202 | 0x0B, 0x06, 0x9F, 0xAF, 0x78, 0x01, 0xEF, 0x77, |
| 203 | 0x80, 0x00, 0x07, 0x06, 0x9F, 0xC0, 0x14, 0x04, |
| 204 | 0xEF, 0x77, 0x01, 0x00, 0x07, 0x06, 0x37, 0xC0, |
| 205 | 0xEF, 0x77, 0x01, 0x00, 0x0D, 0x06, 0x0F, 0xC1, |
| 206 | 0xEF, 0x07, 0x01, 0x00, 0x0D, 0x06, 0xC0, 0x07, |
| 207 | 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, 0x9F, 0xAF, |
| 208 | 0x28, 0x05, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07, |
| 209 | 0x02, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, |
| 210 | 0xFF, 0x4F, 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, |
| 211 | 0x38, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x77, |
| 212 | 0x03, 0x00, 0x02, 0xC1, 0x08, 0xDA, 0x75, 0xC1, |
| 213 | 0xC1, 0x77, 0x01, 0x00, 0x0A, 0xC1, 0xC0, 0x07, |
| 214 | 0x01, 0x00, 0xC1, 0x07, 0x02, 0x00, 0x9F, 0xAF, |
| 215 | 0x28, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x06, 0x06, |
| 216 | 0x2C, 0xCF, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07, |
| 217 | 0x04, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xEF, 0x07, |
| 218 | 0x00, 0x00, 0x06, 0x06, 0x22, 0xCF, 0xEF, 0x07, |
| 219 | 0x00, 0x00, 0x0D, 0x06, 0xEF, 0x57, 0x01, 0x00, |
| 220 | 0x06, 0x06, 0x1B, 0xC0, 0xC0, 0x07, 0x01, 0x00, |
| 221 | 0xC1, 0x07, 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, |
| 222 | 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, |
| 223 | 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, 0xFF, 0x4F, |
| 224 | 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, 0x38, 0x00, |
| 225 | 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x67, 0x03, 0x00, |
| 226 | 0xC1, 0x57, 0x03, 0x00, 0x02, 0xC0, 0x08, 0xDA, |
| 227 | 0x73, 0xC1, 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, |
| 228 | 0x12, 0x00, 0xEF, 0x57, 0x00, 0x00, 0x06, 0x06, |
| 229 | 0x02, 0xC0, 0xC1, 0x07, 0x23, 0x00, 0x9F, 0xAF, |
| 230 | 0x28, 0x05, 0xC0, 0x07, 0x14, 0x00, 0xC1, 0x0B, |
| 231 | 0xEA, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, |
| 232 | 0x3E, 0x00, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x09, |
| 233 | 0xE4, 0x05, 0xFA, 0x05, 0x27, 0xD8, 0xFA, 0x05, |
| 234 | 0xE7, 0x07, 0x0E, 0x06, 0xFC, 0x05, 0xE7, 0x07, |
| 235 | 0x4E, 0x06, 0x00, 0x06, 0xE7, 0x07, 0x40, 0x00, |
| 236 | 0x02, 0x06, 0x9F, 0xAF, 0x66, 0x05, 0x9F, 0xAF, |
| 237 | 0xC6, 0x00, 0x97, 0xCF, 0xC1, 0x0B, 0xE2, 0x05, |
| 238 | 0x41, 0xD0, 0x01, 0xD2, 0xC1, 0x17, 0x23, 0x00, |
| 239 | 0x9F, 0xAF, 0xDC, 0x04, 0xC0, 0x07, 0x04, 0x00, |
| 240 | 0xC1, 0x0B, 0xE3, 0x05, 0x9F, 0xAF, 0x28, 0x05, |
| 241 | 0xC0, 0x07, 0x06, 0x00, 0xC1, 0x09, 0xE6, 0x05, |
| 242 | 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x07, 0x00, |
| 243 | 0xC1, 0x09, 0xE6, 0x05, 0xC1, 0xD1, 0x9F, 0xAF, |
| 244 | 0x28, 0x05, 0xC0, 0x07, 0x0B, 0x00, 0xC1, 0x09, |
| 245 | 0xE8, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, |
| 246 | 0x0C, 0x00, 0xC1, 0x09, 0xE8, 0x05, 0xC1, 0xD1, |
| 247 | 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0D, 0x00, |
| 248 | 0xC1, 0x07, 0x09, 0x00, 0x9F, 0xAF, 0x28, 0x05, |
| 249 | 0xC0, 0x07, 0x03, 0x00, 0xC1, 0x07, 0x32, 0x00, |
| 250 | 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0F, 0x00, |
| 251 | 0xC1, 0x07, 0x00, 0x00, 0x9F, 0xAF, 0x28, 0x05, |
| 252 | 0x97, 0xCF, 0xE7, 0x67, 0xFF, 0xD9, 0x24, 0xC0, |
| 253 | 0xC8, 0x07, 0x0A, 0x00, 0x40, 0x00, 0xC0, 0x67, |
| 254 | 0x00, 0x02, 0x27, 0x80, 0x24, 0xC0, 0xE7, 0x87, |
| 255 | 0x00, 0x04, 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xF9, |
| 256 | 0x24, 0xC0, 0x01, 0xD2, 0x08, 0xDA, 0x72, 0xC1, |
| 257 | 0xE7, 0x87, 0x00, 0x20, 0x24, 0xC0, 0x97, 0xCF, |
| 258 | 0x27, 0x00, 0x1E, 0xC0, 0xE7, 0x87, 0xFF, 0x00, |
| 259 | 0x22, 0xC0, 0xE7, 0x67, 0x7F, 0xFF, 0x24, 0xC0, |
| 260 | 0xE7, 0x87, 0x80, 0x00, 0x24, 0xC0, 0xE7, 0x87, |
| 261 | 0x80, 0x00, 0x24, 0xC0, 0x97, 0xCF, 0x9F, 0xAF, |
| 262 | 0x0A, 0x05, 0x67, 0x00, 0x1E, 0xC0, 0xE7, 0x67, |
| 263 | 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, |
| 264 | 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, |
| 265 | 0x97, 0xCF, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x67, |
| 266 | 0x00, 0xFF, 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, |
| 267 | 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, |
| 268 | 0xC1, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01, |
| 269 | 0x24, 0xC0, 0x97, 0xCF, 0xC0, 0x07, 0x40, 0x00, |
| 270 | 0xC8, 0x09, 0xFC, 0x05, 0xE7, 0x67, 0x00, 0xFF, |
| 271 | 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, |
| 272 | 0xE7, 0x67, 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x67, |
| 273 | 0xBF, 0xFF, 0x24, 0xC0, 0x00, 0xDA, 0xE8, 0x09, |
| 274 | 0x20, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, |
| 275 | 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, 0x00, 0xDA, |
| 276 | 0xE8, 0x09, 0x20, 0xC0, 0x6D, 0xC1, 0xE7, 0x87, |
| 277 | 0x00, 0x01, 0x24, 0xC0, 0x97, 0xCF, 0xE7, 0x07, |
| 278 | 0x32, 0x00, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80, |
| 279 | 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0xE7, 0x07, |
| 280 | 0x20, 0x4E, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80, |
| 281 | 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0x09, 0x02, |
| 282 | 0x19, 0x00, 0x01, 0x01, 0x00, 0x80, 0x96, 0x09, |
| 283 | 0x04, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, |
| 284 | 0x07, 0x05, 0x81, 0x02, 0x40, 0x00, 0x00, 0x00, |
| 285 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 286 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 287 | 0x00, 0x00, 0x00, 0x00, 0x00, 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, |
| 307 | }; |
| 308 | |
| 309 | static unsigned char setup5[] = { |
| 310 | 0xB6, 0xC3, 0x2F, 0x01, 0x03, 0x64, 0x0E, 0x00, |
| 311 | 0x14, 0x00, 0x1A, 0x00, 0x20, 0x00, 0x26, 0x00, |
| 312 | 0x4A, 0x00, 0x64, 0x00, 0x6A, 0x00, 0x92, 0x00, |
| 313 | 0x9A, 0x00, 0xA0, 0x00, 0xB2, 0x00, 0xB8, 0x00, |
| 314 | 0xBE, 0x00, 0xC2, 0x00, 0xC8, 0x00, 0xCE, 0x00, |
| 315 | 0xDC, 0x00, 0xDA, 0x00, 0xE2, 0x00, 0xE0, 0x00, |
| 316 | 0xE8, 0x00, 0xE6, 0x00, 0xEE, 0x00, 0xEC, 0x00, |
| 317 | 0xF2, 0x00, 0xF8, 0x00, 0x02, 0x01, 0x0A, 0x01, |
| 318 | 0x0E, 0x01, 0x12, 0x01, 0x1E, 0x01, 0x22, 0x01, |
| 319 | 0x28, 0x01, 0x2C, 0x01, 0x32, 0x01, 0x36, 0x01, |
| 320 | 0x44, 0x01, 0x50, 0x01, 0x5E, 0x01, 0x72, 0x01, |
| 321 | 0x76, 0x01, 0x7A, 0x01, 0x80, 0x01, 0x88, 0x01, |
| 322 | 0x8C, 0x01, 0x94, 0x01, 0x9C, 0x01, 0xA0, 0x01, |
| 323 | 0xA4, 0x01, 0xAA, 0x01, 0xB0, 0x01, 0xB4, 0x01, |
| 324 | 0xBA, 0x01, 0xD0, 0x01, 0xDA, 0x01, 0xF6, 0x01, |
| 325 | 0xFA, 0x01, 0x02, 0x02, 0x34, 0x02, 0x3C, 0x02, |
| 326 | 0x44, 0x02, 0x4A, 0x02, 0x50, 0x02, 0x56, 0x02, |
| 327 | 0x74, 0x02, 0x78, 0x02, 0x7E, 0x02, 0x84, 0x02, |
| 328 | 0x8A, 0x02, 0x88, 0x02, 0x90, 0x02, 0x8E, 0x02, |
| 329 | 0x94, 0x02, 0xA2, 0x02, 0xA8, 0x02, 0xAE, 0x02, |
| 330 | 0xB4, 0x02, 0xBA, 0x02, 0xB8, 0x02, 0xC0, 0x02, |
| 331 | 0xBE, 0x02, 0xC4, 0x02, 0xD0, 0x02, 0xD4, 0x02, |
| 332 | 0xE0, 0x02, 0xE6, 0x02, 0xEE, 0x02, 0xF8, 0x02, |
| 333 | 0xFC, 0x02, 0x06, 0x03, 0x1E, 0x03, 0x24, 0x03, |
| 334 | 0x28, 0x03, 0x30, 0x03, 0x2E, 0x03, 0x3C, 0x03, |
| 335 | 0x4A, 0x03, 0x4E, 0x03, 0x54, 0x03, 0x58, 0x03, |
| 336 | 0x5E, 0x03, 0x66, 0x03, 0x6E, 0x03, 0x7A, 0x03, |
| 337 | 0x86, 0x03, 0x8E, 0x03, 0x96, 0x03, 0xB2, 0x03, |
| 338 | 0xB8, 0x03, 0xC6, 0x03, 0xCC, 0x03, 0xD4, 0x03, |
| 339 | 0xDA, 0x03, 0xE8, 0x03, 0xF4, 0x03, 0xFC, 0x03, |
| 340 | 0x04, 0x04, 0x20, 0x04, 0x2A, 0x04, 0x32, 0x04, |
| 341 | 0x36, 0x04, 0x3E, 0x04, 0x44, 0x04, 0x42, 0x04, |
| 342 | 0x48, 0x04, 0x4E, 0x04, 0x4C, 0x04, 0x54, 0x04, |
| 343 | 0x52, 0x04, 0x5A, 0x04, 0x5E, 0x04, 0x62, 0x04, |
| 344 | 0x68, 0x04, 0x74, 0x04, 0x7C, 0x04, 0x80, 0x04, |
| 345 | 0x88, 0x04, 0x8C, 0x04, 0x94, 0x04, 0x9A, 0x04, |
| 346 | 0xA2, 0x04, 0xA6, 0x04, 0xAE, 0x04, 0xB4, 0x04, |
| 347 | 0xC0, 0x04, 0xCC, 0x04, 0xD8, 0x04, 0x2A, 0x05, |
| 348 | 0x46, 0x05, 0x6C, 0x05, 0x00, 0x00 |
| 349 | }; |
| 350 | |
| 351 | /* rvmalloc / rvfree copied from usbvideo.c |
| 352 | * |
| 353 | * Not sure why these are not yet non-statics which I can reference through |
| 354 | * usbvideo.h the same as it is in 2.4.20. I bet this will get fixed sometime |
| 355 | * in the future. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 356 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | */ |
| 358 | static void *rvmalloc(unsigned long size) |
| 359 | { |
| 360 | void *mem; |
| 361 | unsigned long adr; |
| 362 | |
| 363 | size = PAGE_ALIGN(size); |
| 364 | mem = vmalloc_32(size); |
| 365 | if (!mem) |
| 366 | return NULL; |
| 367 | |
| 368 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| 369 | adr = (unsigned long) mem; |
| 370 | while (size > 0) { |
| 371 | SetPageReserved(vmalloc_to_page((void *)adr)); |
| 372 | adr += PAGE_SIZE; |
| 373 | size -= PAGE_SIZE; |
| 374 | } |
| 375 | |
| 376 | return mem; |
| 377 | } |
| 378 | |
| 379 | static void rvfree(void *mem, unsigned long size) |
| 380 | { |
| 381 | unsigned long adr; |
| 382 | |
| 383 | if (!mem) |
| 384 | return; |
| 385 | |
| 386 | adr = (unsigned long) mem; |
| 387 | while ((long) size > 0) { |
| 388 | ClearPageReserved(vmalloc_to_page((void *)adr)); |
| 389 | adr += PAGE_SIZE; |
| 390 | size -= PAGE_SIZE; |
| 391 | } |
| 392 | vfree(mem); |
| 393 | } |
| 394 | |
| 395 | struct vicam_camera { |
| 396 | u16 shutter_speed; // capture shutter speed |
| 397 | u16 gain; // capture gain |
| 398 | |
| 399 | u8 *raw_image; // raw data captured from the camera |
| 400 | u8 *framebuf; // processed data in RGB24 format |
| 401 | u8 *cntrlbuf; // area used to send control msgs |
| 402 | |
| 403 | struct video_device vdev; // v4l video device |
| 404 | struct usb_device *udev; // usb device |
| 405 | |
| 406 | /* guard against simultaneous accesses to the camera */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 407 | struct mutex cam_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
| 409 | int is_initialized; |
| 410 | u8 open_count; |
| 411 | u8 bulkEndpoint; |
| 412 | int needsDummyRead; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | }; |
| 414 | |
| 415 | static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id); |
| 416 | static void vicam_disconnect(struct usb_interface *intf); |
| 417 | static void read_frame(struct vicam_camera *cam, int framenum); |
| 418 | static void vicam_decode_color(const u8 *, u8 *); |
| 419 | |
| 420 | static int __send_control_msg(struct vicam_camera *cam, |
| 421 | u8 request, |
| 422 | u16 value, |
| 423 | u16 index, |
| 424 | unsigned char *cp, |
| 425 | u16 size) |
| 426 | { |
| 427 | int status; |
| 428 | |
| 429 | /* cp must be memory that has been allocated by kmalloc */ |
| 430 | |
| 431 | status = usb_control_msg(cam->udev, |
| 432 | usb_sndctrlpipe(cam->udev, 0), |
| 433 | request, |
| 434 | USB_DIR_OUT | USB_TYPE_VENDOR | |
| 435 | USB_RECIP_DEVICE, value, index, |
| 436 | cp, size, 1000); |
| 437 | |
| 438 | status = min(status, 0); |
| 439 | |
| 440 | if (status < 0) { |
| 441 | printk(KERN_INFO "Failed sending control message, error %d.\n", |
| 442 | status); |
| 443 | } |
| 444 | |
| 445 | return status; |
| 446 | } |
| 447 | |
| 448 | static int send_control_msg(struct vicam_camera *cam, |
| 449 | u8 request, |
| 450 | u16 value, |
| 451 | u16 index, |
| 452 | unsigned char *cp, |
| 453 | u16 size) |
| 454 | { |
| 455 | int status = -ENODEV; |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 456 | mutex_lock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | if (cam->udev) { |
| 458 | status = __send_control_msg(cam, request, value, |
| 459 | index, cp, size); |
| 460 | } |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 461 | mutex_unlock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | return status; |
| 463 | } |
| 464 | static int |
| 465 | initialize_camera(struct vicam_camera *cam) |
| 466 | { |
| 467 | const struct { |
| 468 | u8 *data; |
| 469 | u32 size; |
| 470 | } firmware[] = { |
| 471 | { .data = setup1, .size = sizeof(setup1) }, |
| 472 | { .data = setup2, .size = sizeof(setup2) }, |
| 473 | { .data = setup3, .size = sizeof(setup3) }, |
| 474 | { .data = setup4, .size = sizeof(setup4) }, |
| 475 | { .data = setup5, .size = sizeof(setup5) }, |
| 476 | { .data = setup3, .size = sizeof(setup3) }, |
| 477 | { .data = NULL, .size = 0 } |
| 478 | }; |
| 479 | |
| 480 | int err, i; |
| 481 | |
| 482 | for (i = 0, err = 0; firmware[i].data && !err; i++) { |
| 483 | memcpy(cam->cntrlbuf, firmware[i].data, firmware[i].size); |
| 484 | |
| 485 | err = send_control_msg(cam, 0xff, 0, 0, |
| 486 | cam->cntrlbuf, firmware[i].size); |
| 487 | } |
| 488 | |
| 489 | return err; |
| 490 | } |
| 491 | |
| 492 | static int |
| 493 | set_camera_power(struct vicam_camera *cam, int state) |
| 494 | { |
| 495 | int status; |
| 496 | |
| 497 | if ((status = send_control_msg(cam, 0x50, state, 0, NULL, 0)) < 0) |
| 498 | return status; |
| 499 | |
| 500 | if (state) { |
| 501 | send_control_msg(cam, 0x55, 1, 0, NULL, 0); |
| 502 | } |
| 503 | |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static int |
| 508 | vicam_ioctl(struct inode *inode, struct file *file, unsigned int ioctlnr, unsigned long arg) |
| 509 | { |
| 510 | void __user *user_arg = (void __user *)arg; |
| 511 | struct vicam_camera *cam = file->private_data; |
| 512 | int retval = 0; |
| 513 | |
| 514 | if (!cam) |
| 515 | return -ENODEV; |
| 516 | |
| 517 | switch (ioctlnr) { |
| 518 | /* query capabilities */ |
| 519 | case VIDIOCGCAP: |
| 520 | { |
| 521 | struct video_capability b; |
| 522 | |
| 523 | DBG("VIDIOCGCAP\n"); |
| 524 | memset(&b, 0, sizeof(b)); |
| 525 | strcpy(b.name, "ViCam-based Camera"); |
| 526 | b.type = VID_TYPE_CAPTURE; |
| 527 | b.channels = 1; |
| 528 | b.audios = 0; |
| 529 | b.maxwidth = 320; /* VIDEOSIZE_CIF */ |
| 530 | b.maxheight = 240; |
| 531 | b.minwidth = 320; /* VIDEOSIZE_48_48 */ |
| 532 | b.minheight = 240; |
| 533 | |
| 534 | if (copy_to_user(user_arg, &b, sizeof(b))) |
| 535 | retval = -EFAULT; |
| 536 | |
| 537 | break; |
| 538 | } |
| 539 | /* get/set video source - we are a camera and nothing else */ |
| 540 | case VIDIOCGCHAN: |
| 541 | { |
| 542 | struct video_channel v; |
| 543 | |
| 544 | DBG("VIDIOCGCHAN\n"); |
| 545 | if (copy_from_user(&v, user_arg, sizeof(v))) { |
| 546 | retval = -EFAULT; |
| 547 | break; |
| 548 | } |
| 549 | if (v.channel != 0) { |
| 550 | retval = -EINVAL; |
| 551 | break; |
| 552 | } |
| 553 | |
| 554 | v.channel = 0; |
| 555 | strcpy(v.name, "Camera"); |
| 556 | v.tuners = 0; |
| 557 | v.flags = 0; |
| 558 | v.type = VIDEO_TYPE_CAMERA; |
| 559 | v.norm = 0; |
| 560 | |
| 561 | if (copy_to_user(user_arg, &v, sizeof(v))) |
| 562 | retval = -EFAULT; |
| 563 | break; |
| 564 | } |
| 565 | |
| 566 | case VIDIOCSCHAN: |
| 567 | { |
| 568 | int v; |
| 569 | |
| 570 | if (copy_from_user(&v, user_arg, sizeof(v))) |
| 571 | retval = -EFAULT; |
| 572 | DBG("VIDIOCSCHAN %d\n", v); |
| 573 | |
| 574 | if (retval == 0 && v != 0) |
| 575 | retval = -EINVAL; |
| 576 | |
| 577 | break; |
| 578 | } |
| 579 | |
| 580 | /* image properties */ |
| 581 | case VIDIOCGPICT: |
| 582 | { |
| 583 | struct video_picture vp; |
| 584 | DBG("VIDIOCGPICT\n"); |
| 585 | memset(&vp, 0, sizeof (struct video_picture)); |
| 586 | vp.brightness = cam->gain << 8; |
| 587 | vp.depth = 24; |
| 588 | vp.palette = VIDEO_PALETTE_RGB24; |
| 589 | if (copy_to_user(user_arg, &vp, sizeof (struct video_picture))) |
| 590 | retval = -EFAULT; |
| 591 | break; |
| 592 | } |
| 593 | |
| 594 | case VIDIOCSPICT: |
| 595 | { |
| 596 | struct video_picture vp; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 597 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | if (copy_from_user(&vp, user_arg, sizeof(vp))) { |
| 599 | retval = -EFAULT; |
| 600 | break; |
| 601 | } |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp.depth, |
| 604 | vp.palette); |
| 605 | |
| 606 | cam->gain = vp.brightness >> 8; |
| 607 | |
| 608 | if (vp.depth != 24 |
| 609 | || vp.palette != VIDEO_PALETTE_RGB24) |
| 610 | retval = -EINVAL; |
| 611 | |
| 612 | break; |
| 613 | } |
| 614 | |
| 615 | /* get/set capture window */ |
| 616 | case VIDIOCGWIN: |
| 617 | { |
| 618 | struct video_window vw; |
| 619 | vw.x = 0; |
| 620 | vw.y = 0; |
| 621 | vw.width = 320; |
| 622 | vw.height = 240; |
| 623 | vw.chromakey = 0; |
| 624 | vw.flags = 0; |
| 625 | vw.clips = NULL; |
| 626 | vw.clipcount = 0; |
| 627 | |
| 628 | DBG("VIDIOCGWIN\n"); |
| 629 | |
| 630 | if (copy_to_user(user_arg, (void *)&vw, sizeof(vw))) |
| 631 | retval = -EFAULT; |
| 632 | |
| 633 | // I'm not sure what the deal with a capture window is, it is very poorly described |
| 634 | // in the doc. So I won't support it now. |
| 635 | break; |
| 636 | } |
| 637 | |
| 638 | case VIDIOCSWIN: |
| 639 | { |
| 640 | |
| 641 | struct video_window vw; |
| 642 | |
| 643 | if (copy_from_user(&vw, user_arg, sizeof(vw))) { |
| 644 | retval = -EFAULT; |
| 645 | break; |
| 646 | } |
| 647 | |
| 648 | DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 649 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | if ( vw.width != 320 || vw.height != 240 ) |
| 651 | retval = -EFAULT; |
| 652 | |
| 653 | break; |
| 654 | } |
| 655 | |
| 656 | /* mmap interface */ |
| 657 | case VIDIOCGMBUF: |
| 658 | { |
| 659 | struct video_mbuf vm; |
| 660 | int i; |
| 661 | |
| 662 | DBG("VIDIOCGMBUF\n"); |
| 663 | memset(&vm, 0, sizeof (vm)); |
| 664 | vm.size = |
| 665 | VICAM_MAX_FRAME_SIZE * VICAM_FRAMES; |
| 666 | vm.frames = VICAM_FRAMES; |
| 667 | for (i = 0; i < VICAM_FRAMES; i++) |
| 668 | vm.offsets[i] = VICAM_MAX_FRAME_SIZE * i; |
| 669 | |
| 670 | if (copy_to_user(user_arg, (void *)&vm, sizeof(vm))) |
| 671 | retval = -EFAULT; |
| 672 | |
| 673 | break; |
| 674 | } |
| 675 | |
| 676 | case VIDIOCMCAPTURE: |
| 677 | { |
| 678 | struct video_mmap vm; |
| 679 | // int video_size; |
| 680 | |
| 681 | if (copy_from_user((void *)&vm, user_arg, sizeof(vm))) { |
| 682 | retval = -EFAULT; |
| 683 | break; |
| 684 | } |
| 685 | |
| 686 | DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n",vm.frame,vm.width,vm.height,vm.format); |
| 687 | |
| 688 | if ( vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24 ) |
| 689 | retval = -EINVAL; |
| 690 | |
| 691 | // in theory right here we'd start the image capturing |
| 692 | // (fill in a bulk urb and submit it asynchronously) |
| 693 | // |
| 694 | // Instead we're going to do a total hack job for now and |
| 695 | // retrieve the frame in VIDIOCSYNC |
| 696 | |
| 697 | break; |
| 698 | } |
| 699 | |
| 700 | case VIDIOCSYNC: |
| 701 | { |
| 702 | int frame; |
| 703 | |
| 704 | if (copy_from_user((void *)&frame, user_arg, sizeof(int))) { |
| 705 | retval = -EFAULT; |
| 706 | break; |
| 707 | } |
| 708 | DBG("VIDIOCSYNC: %d\n", frame); |
| 709 | |
| 710 | read_frame(cam, frame); |
| 711 | vicam_decode_color(cam->raw_image, |
| 712 | cam->framebuf + |
| 713 | frame * VICAM_MAX_FRAME_SIZE ); |
| 714 | |
| 715 | break; |
| 716 | } |
| 717 | |
| 718 | /* pointless to implement overlay with this camera */ |
| 719 | case VIDIOCCAPTURE: |
| 720 | case VIDIOCGFBUF: |
| 721 | case VIDIOCSFBUF: |
| 722 | case VIDIOCKEY: |
| 723 | retval = -EINVAL; |
| 724 | break; |
| 725 | |
| 726 | /* tuner interface - we have none */ |
| 727 | case VIDIOCGTUNER: |
| 728 | case VIDIOCSTUNER: |
| 729 | case VIDIOCGFREQ: |
| 730 | case VIDIOCSFREQ: |
| 731 | retval = -EINVAL; |
| 732 | break; |
| 733 | |
| 734 | /* audio interface - we have none */ |
| 735 | case VIDIOCGAUDIO: |
| 736 | case VIDIOCSAUDIO: |
| 737 | retval = -EINVAL; |
| 738 | break; |
| 739 | default: |
| 740 | retval = -ENOIOCTLCMD; |
| 741 | break; |
| 742 | } |
| 743 | |
| 744 | return retval; |
| 745 | } |
| 746 | |
| 747 | static int |
| 748 | vicam_open(struct inode *inode, struct file *file) |
| 749 | { |
| 750 | struct video_device *dev = video_devdata(file); |
| 751 | struct vicam_camera *cam = |
| 752 | (struct vicam_camera *) dev->priv; |
| 753 | DBG("open\n"); |
| 754 | |
| 755 | if (!cam) { |
| 756 | printk(KERN_ERR |
| 757 | "vicam video_device improperly initialized"); |
Adrian Bunk | f88f829 | 2006-03-10 23:25:06 +0100 | [diff] [blame] | 758 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | } |
| 760 | |
| 761 | /* the videodev_lock held above us protects us from |
| 762 | * simultaneous opens...for now. we probably shouldn't |
| 763 | * rely on this fact forever. |
| 764 | */ |
| 765 | |
| 766 | if (cam->open_count > 0) { |
| 767 | printk(KERN_INFO |
| 768 | "vicam_open called on already opened camera"); |
| 769 | return -EBUSY; |
| 770 | } |
| 771 | |
| 772 | cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL); |
| 773 | if (!cam->raw_image) { |
| 774 | return -ENOMEM; |
| 775 | } |
| 776 | |
| 777 | cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); |
| 778 | if (!cam->framebuf) { |
| 779 | kfree(cam->raw_image); |
| 780 | return -ENOMEM; |
| 781 | } |
| 782 | |
| 783 | cam->cntrlbuf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 784 | if (!cam->cntrlbuf) { |
| 785 | kfree(cam->raw_image); |
| 786 | rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); |
| 787 | return -ENOMEM; |
| 788 | } |
| 789 | |
| 790 | // First upload firmware, then turn the camera on |
| 791 | |
| 792 | if (!cam->is_initialized) { |
| 793 | initialize_camera(cam); |
| 794 | |
| 795 | cam->is_initialized = 1; |
| 796 | } |
| 797 | |
| 798 | set_camera_power(cam, 1); |
| 799 | |
| 800 | cam->needsDummyRead = 1; |
| 801 | cam->open_count++; |
| 802 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 803 | file->private_data = cam; |
| 804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | return 0; |
| 806 | } |
| 807 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 808 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | vicam_close(struct inode *inode, struct file *file) |
| 810 | { |
| 811 | struct vicam_camera *cam = file->private_data; |
| 812 | int open_count; |
| 813 | struct usb_device *udev; |
| 814 | |
| 815 | DBG("close\n"); |
| 816 | |
| 817 | /* it's not the end of the world if |
| 818 | * we fail to turn the camera off. |
| 819 | */ |
| 820 | |
| 821 | set_camera_power(cam, 0); |
| 822 | |
| 823 | kfree(cam->raw_image); |
| 824 | rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); |
| 825 | kfree(cam->cntrlbuf); |
| 826 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 827 | mutex_lock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | |
| 829 | cam->open_count--; |
| 830 | open_count = cam->open_count; |
| 831 | udev = cam->udev; |
| 832 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 833 | mutex_unlock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | |
| 835 | if (!open_count && !udev) { |
| 836 | kfree(cam); |
| 837 | } |
| 838 | |
| 839 | return 0; |
| 840 | } |
| 841 | |
| 842 | static void vicam_decode_color(const u8 *data, u8 *rgb) |
| 843 | { |
| 844 | /* vicam_decode_color - Convert from Vicam Y-Cr-Cb to RGB |
| 845 | * Copyright (C) 2002 Monroe Williams (monroe@pobox.com) |
| 846 | */ |
| 847 | |
| 848 | int i, prevY, nextY; |
| 849 | |
| 850 | prevY = 512; |
| 851 | nextY = 512; |
| 852 | |
| 853 | data += VICAM_HEADER_SIZE; |
| 854 | |
| 855 | for( i = 0; i < 240; i++, data += 512 ) { |
| 856 | const int y = ( i * 242 ) / 240; |
| 857 | |
| 858 | int j, prevX, nextX; |
| 859 | int Y, Cr, Cb; |
| 860 | |
| 861 | if ( y == 242 - 1 ) { |
| 862 | nextY = -512; |
| 863 | } |
| 864 | |
| 865 | prevX = 1; |
| 866 | nextX = 1; |
| 867 | |
| 868 | for ( j = 0; j < 320; j++, rgb += 3 ) { |
| 869 | const int x = ( j * 512 ) / 320; |
| 870 | const u8 * const src = &data[x]; |
| 871 | |
| 872 | if ( x == 512 - 1 ) { |
| 873 | nextX = -1; |
| 874 | } |
| 875 | |
| 876 | Cr = ( src[prevX] - src[0] ) + |
| 877 | ( src[nextX] - src[0] ); |
| 878 | Cr /= 2; |
| 879 | |
| 880 | Cb = ( src[prevY] - src[prevX + prevY] ) + |
| 881 | ( src[prevY] - src[nextX + prevY] ) + |
| 882 | ( src[nextY] - src[prevX + nextY] ) + |
| 883 | ( src[nextY] - src[nextX + nextY] ); |
| 884 | Cb /= 4; |
| 885 | |
| 886 | Y = 1160 * ( src[0] + ( Cr / 2 ) - 16 ); |
| 887 | |
| 888 | if ( i & 1 ) { |
| 889 | int Ct = Cr; |
| 890 | Cr = Cb; |
| 891 | Cb = Ct; |
| 892 | } |
| 893 | |
| 894 | if ( ( x ^ i ) & 1 ) { |
| 895 | Cr = -Cr; |
| 896 | Cb = -Cb; |
| 897 | } |
| 898 | |
| 899 | rgb[0] = clamp( ( ( Y + ( 2017 * Cb ) ) + |
| 900 | 500 ) / 900, 0, 255 ); |
| 901 | rgb[1] = clamp( ( ( Y - ( 392 * Cb ) - |
| 902 | ( 813 * Cr ) ) + |
| 903 | 500 ) / 1000, 0, 255 ); |
| 904 | rgb[2] = clamp( ( ( Y + ( 1594 * Cr ) ) + |
| 905 | 500 ) / 1300, 0, 255 ); |
| 906 | |
| 907 | prevX = -1; |
| 908 | } |
| 909 | |
| 910 | prevY = -512; |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | static void |
| 915 | read_frame(struct vicam_camera *cam, int framenum) |
| 916 | { |
| 917 | unsigned char *request = cam->cntrlbuf; |
| 918 | int realShutter; |
| 919 | int n; |
| 920 | int actual_length; |
| 921 | |
| 922 | if (cam->needsDummyRead) { |
| 923 | cam->needsDummyRead = 0; |
| 924 | read_frame(cam, framenum); |
| 925 | } |
| 926 | |
| 927 | memset(request, 0, 16); |
| 928 | request[0] = cam->gain; // 0 = 0% gain, FF = 100% gain |
| 929 | |
| 930 | request[1] = 0; // 512x242 capture |
| 931 | |
| 932 | request[2] = 0x90; // the function of these two bytes |
| 933 | request[3] = 0x07; // is not yet understood |
| 934 | |
| 935 | if (cam->shutter_speed > 60) { |
| 936 | // Short exposure |
| 937 | realShutter = |
| 938 | ((-15631900 / cam->shutter_speed) + 260533) / 1000; |
| 939 | request[4] = realShutter & 0xFF; |
| 940 | request[5] = (realShutter >> 8) & 0xFF; |
| 941 | request[6] = 0x03; |
| 942 | request[7] = 0x01; |
| 943 | } else { |
| 944 | // Long exposure |
| 945 | realShutter = 15600 / cam->shutter_speed - 1; |
| 946 | request[4] = 0; |
| 947 | request[5] = 0; |
| 948 | request[6] = realShutter & 0xFF; |
| 949 | request[7] = realShutter >> 8; |
| 950 | } |
| 951 | |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 952 | // Per John Markus Bjørndalen, byte at index 8 causes problems if it isn't 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | request[8] = 0; |
| 954 | // bytes 9-15 do not seem to affect exposure or image quality |
| 955 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 956 | mutex_lock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
| 958 | if (!cam->udev) { |
| 959 | goto done; |
| 960 | } |
| 961 | |
| 962 | n = __send_control_msg(cam, 0x51, 0x80, 0, request, 16); |
| 963 | |
| 964 | if (n < 0) { |
| 965 | printk(KERN_ERR |
| 966 | " Problem sending frame capture control message"); |
| 967 | goto done; |
| 968 | } |
| 969 | |
| 970 | n = usb_bulk_msg(cam->udev, |
| 971 | usb_rcvbulkpipe(cam->udev, cam->bulkEndpoint), |
| 972 | cam->raw_image, |
| 973 | 512 * 242 + 128, &actual_length, 10000); |
| 974 | |
| 975 | if (n < 0) { |
| 976 | printk(KERN_ERR "Problem during bulk read of frame data: %d\n", |
| 977 | n); |
| 978 | } |
| 979 | |
| 980 | done: |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 981 | mutex_unlock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | static ssize_t |
| 985 | vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos ) |
| 986 | { |
| 987 | struct vicam_camera *cam = file->private_data; |
| 988 | |
| 989 | DBG("read %d bytes.\n", (int) count); |
| 990 | |
| 991 | if (*ppos >= VICAM_MAX_FRAME_SIZE) { |
| 992 | *ppos = 0; |
| 993 | return 0; |
| 994 | } |
| 995 | |
| 996 | if (*ppos == 0) { |
| 997 | read_frame(cam, 0); |
| 998 | vicam_decode_color(cam->raw_image, |
| 999 | cam->framebuf + |
| 1000 | 0 * VICAM_MAX_FRAME_SIZE); |
| 1001 | } |
| 1002 | |
| 1003 | count = min_t(size_t, count, VICAM_MAX_FRAME_SIZE - *ppos); |
| 1004 | |
| 1005 | if (copy_to_user(buf, &cam->framebuf[*ppos], count)) { |
| 1006 | count = -EFAULT; |
| 1007 | } else { |
| 1008 | *ppos += count; |
| 1009 | } |
| 1010 | |
| 1011 | if (count == VICAM_MAX_FRAME_SIZE) { |
| 1012 | *ppos = 0; |
| 1013 | } |
| 1014 | |
| 1015 | return count; |
| 1016 | } |
| 1017 | |
| 1018 | |
| 1019 | static int |
| 1020 | vicam_mmap(struct file *file, struct vm_area_struct *vma) |
| 1021 | { |
| 1022 | // TODO: allocate the raw frame buffer if necessary |
| 1023 | unsigned long page, pos; |
| 1024 | unsigned long start = vma->vm_start; |
| 1025 | unsigned long size = vma->vm_end-vma->vm_start; |
| 1026 | struct vicam_camera *cam = file->private_data; |
| 1027 | |
| 1028 | if (!cam) |
| 1029 | return -ENODEV; |
| 1030 | |
| 1031 | DBG("vicam_mmap: %ld\n", size); |
| 1032 | |
| 1033 | /* We let mmap allocate as much as it wants because Linux was adding 2048 bytes |
| 1034 | * to the size the application requested for mmap and it was screwing apps up. |
| 1035 | if (size > VICAM_FRAMES*VICAM_MAX_FRAME_SIZE) |
| 1036 | return -EINVAL; |
| 1037 | */ |
| 1038 | |
| 1039 | pos = (unsigned long)cam->framebuf; |
| 1040 | while (size > 0) { |
| 1041 | page = vmalloc_to_pfn((void *)pos); |
| 1042 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) |
| 1043 | return -EAGAIN; |
| 1044 | |
| 1045 | start += PAGE_SIZE; |
| 1046 | pos += PAGE_SIZE; |
| 1047 | if (size > PAGE_SIZE) |
| 1048 | size -= PAGE_SIZE; |
| 1049 | else |
| 1050 | size = 0; |
| 1051 | } |
| 1052 | |
| 1053 | return 0; |
| 1054 | } |
| 1055 | |
Arjan van de Ven | fa027c2 | 2007-02-12 00:55:33 -0800 | [diff] [blame] | 1056 | static const struct file_operations vicam_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | .owner = THIS_MODULE, |
| 1058 | .open = vicam_open, |
| 1059 | .release = vicam_close, |
| 1060 | .read = vicam_read, |
| 1061 | .mmap = vicam_mmap, |
| 1062 | .ioctl = vicam_ioctl, |
Douglas Schilling Landgraf | 078ff79 | 2008-04-22 14:46:11 -0300 | [diff] [blame] | 1063 | #ifdef CONFIG_COMPAT |
Arnd Bergmann | 0d0fbf8 | 2006-01-09 15:24:57 -0200 | [diff] [blame] | 1064 | .compat_ioctl = v4l_compat_ioctl32, |
Douglas Schilling Landgraf | 078ff79 | 2008-04-22 14:46:11 -0300 | [diff] [blame] | 1065 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | .llseek = no_llseek, |
| 1067 | }; |
| 1068 | |
| 1069 | static struct video_device vicam_template = { |
| 1070 | .owner = THIS_MODULE, |
| 1071 | .name = "ViCam-based USB Camera", |
| 1072 | .type = VID_TYPE_CAPTURE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | .fops = &vicam_fops, |
| 1074 | .minor = -1, |
| 1075 | }; |
| 1076 | |
| 1077 | /* table of devices that work with this driver */ |
| 1078 | static struct usb_device_id vicam_table[] = { |
| 1079 | {USB_DEVICE(USB_VICAM_VENDOR_ID, USB_VICAM_PRODUCT_ID)}, |
Bas Bloemsaat | 81409ed | 2006-09-03 09:47:41 -0300 | [diff] [blame] | 1080 | {USB_DEVICE(USB_COMPRO_VENDOR_ID, USB_COMPRO_PRODUCT_ID)}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | {} /* Terminating entry */ |
| 1082 | }; |
| 1083 | |
| 1084 | MODULE_DEVICE_TABLE(usb, vicam_table); |
| 1085 | |
| 1086 | static struct usb_driver vicam_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | .name = "vicam", |
| 1088 | .probe = vicam_probe, |
| 1089 | .disconnect = vicam_disconnect, |
| 1090 | .id_table = vicam_table |
| 1091 | }; |
| 1092 | |
| 1093 | /** |
| 1094 | * vicam_probe |
| 1095 | * @intf: the interface |
| 1096 | * @id: the device id |
| 1097 | * |
| 1098 | * Called by the usb core when a new device is connected that it thinks |
| 1099 | * this driver might be interested in. |
| 1100 | */ |
| 1101 | static int |
| 1102 | vicam_probe( struct usb_interface *intf, const struct usb_device_id *id) |
| 1103 | { |
| 1104 | struct usb_device *dev = interface_to_usbdev(intf); |
| 1105 | int bulkEndpoint = 0; |
| 1106 | const struct usb_host_interface *interface; |
| 1107 | const struct usb_endpoint_descriptor *endpoint; |
| 1108 | struct vicam_camera *cam; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | printk(KERN_INFO "ViCam based webcam connected\n"); |
| 1111 | |
| 1112 | interface = intf->cur_altsetting; |
| 1113 | |
| 1114 | DBG(KERN_DEBUG "Interface %d. has %u. endpoints!\n", |
| 1115 | interface->desc.bInterfaceNumber, (unsigned) (interface->desc.bNumEndpoints)); |
| 1116 | endpoint = &interface->endpoint[0].desc; |
| 1117 | |
| 1118 | if ((endpoint->bEndpointAddress & 0x80) && |
| 1119 | ((endpoint->bmAttributes & 3) == 0x02)) { |
| 1120 | /* we found a bulk in endpoint */ |
| 1121 | bulkEndpoint = endpoint->bEndpointAddress; |
| 1122 | } else { |
| 1123 | printk(KERN_ERR |
| 1124 | "No bulk in endpoint was found ?! (this is bad)\n"); |
| 1125 | } |
| 1126 | |
| 1127 | if ((cam = |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 1128 | kzalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | printk(KERN_WARNING |
| 1130 | "could not allocate kernel memory for vicam_camera struct\n"); |
| 1131 | return -ENOMEM; |
| 1132 | } |
| 1133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | |
| 1135 | cam->shutter_speed = 15; |
| 1136 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1137 | mutex_init(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | |
| 1139 | memcpy(&cam->vdev, &vicam_template, |
| 1140 | sizeof (vicam_template)); |
| 1141 | cam->vdev.priv = cam; // sort of a reverse mapping for those functions that get vdev only |
| 1142 | |
| 1143 | cam->udev = dev; |
| 1144 | cam->bulkEndpoint = bulkEndpoint; |
| 1145 | |
| 1146 | if (video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1) == -1) { |
| 1147 | kfree(cam); |
| 1148 | printk(KERN_WARNING "video_register_device failed\n"); |
| 1149 | return -EIO; |
| 1150 | } |
| 1151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | printk(KERN_INFO "ViCam webcam driver now controlling video device %d\n",cam->vdev.minor); |
| 1153 | |
| 1154 | usb_set_intfdata (intf, cam); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | return 0; |
| 1157 | } |
| 1158 | |
| 1159 | static void |
| 1160 | vicam_disconnect(struct usb_interface *intf) |
| 1161 | { |
| 1162 | int open_count; |
| 1163 | struct vicam_camera *cam = usb_get_intfdata (intf); |
| 1164 | usb_set_intfdata (intf, NULL); |
| 1165 | |
| 1166 | /* we must unregister the device before taking its |
| 1167 | * cam_lock. This is because the video open call |
| 1168 | * holds the same lock as video unregister. if we |
| 1169 | * unregister inside of the cam_lock and open also |
| 1170 | * uses the cam_lock, we get deadlock. |
| 1171 | */ |
| 1172 | |
| 1173 | video_unregister_device(&cam->vdev); |
| 1174 | |
| 1175 | /* stop the camera from being used */ |
| 1176 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1177 | mutex_lock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
| 1179 | /* mark the camera as gone */ |
| 1180 | |
| 1181 | cam->udev = NULL; |
| 1182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | /* the only thing left to do is synchronize with |
| 1184 | * our close/release function on who should release |
| 1185 | * the camera memory. if there are any users using the |
| 1186 | * camera, it's their job. if there are no users, |
| 1187 | * it's ours. |
| 1188 | */ |
| 1189 | |
| 1190 | open_count = cam->open_count; |
| 1191 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 1192 | mutex_unlock(&cam->cam_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | |
| 1194 | if (!open_count) { |
| 1195 | kfree(cam); |
| 1196 | } |
| 1197 | |
| 1198 | printk(KERN_DEBUG "ViCam-based WebCam disconnected\n"); |
| 1199 | } |
| 1200 | |
| 1201 | /* |
| 1202 | */ |
| 1203 | static int __init |
| 1204 | usb_vicam_init(void) |
| 1205 | { |
| 1206 | int retval; |
| 1207 | DBG(KERN_INFO "ViCam-based WebCam driver startup\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | retval = usb_register(&vicam_driver); |
| 1209 | if (retval) |
| 1210 | printk(KERN_WARNING "usb_register failed!\n"); |
| 1211 | return retval; |
| 1212 | } |
| 1213 | |
| 1214 | static void __exit |
| 1215 | usb_vicam_exit(void) |
| 1216 | { |
| 1217 | DBG(KERN_INFO |
| 1218 | "ViCam-based WebCam driver shutdown\n"); |
| 1219 | |
| 1220 | usb_deregister(&vicam_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | } |
| 1222 | |
| 1223 | module_init(usb_vicam_init); |
| 1224 | module_exit(usb_vicam_exit); |
| 1225 | |
| 1226 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1227 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 1228 | MODULE_LICENSE("GPL"); |