Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /*************************************************************************** |
| 2 | * Video4Linux driver for W996[87]CF JPEG USB Dual Mode Camera Chip. * |
| 3 | * * |
| 4 | * Copyright (C) 2002-2004 by Luca Risolia <luca.risolia@studio.unibo.it> * |
| 5 | * * |
| 6 | * - Memory management code from bttv driver by Ralph Metzler, * |
| 7 | * Marcus Metzler and Gerd Knorr. * |
| 8 | * - I2C interface to kernel, high-level image sensor control routines and * |
| 9 | * some symbolic names from OV511 driver by Mark W. McClelland. * |
| 10 | * - Low-level I2C fast write function by Piotr Czerczak. * |
| 11 | * - Low-level I2C read function by Frederic Jouault. * |
| 12 | * * |
| 13 | * This program is free software; you can redistribute it and/or modify * |
| 14 | * it under the terms of the GNU General Public License as published by * |
| 15 | * the Free Software Foundation; either version 2 of the License, or * |
| 16 | * (at your option) any later version. * |
| 17 | * * |
| 18 | * This program is distributed in the hope that it will be useful, * |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 21 | * GNU General Public License for more details. * |
| 22 | * * |
| 23 | * You should have received a copy of the GNU General Public License * |
| 24 | * along with this program; if not, write to the Free Software * |
| 25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * |
| 26 | ***************************************************************************/ |
| 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/kmod.h> |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/fs.h> |
| 33 | #include <linux/vmalloc.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/mm.h> |
| 36 | #include <linux/string.h> |
| 37 | #include <linux/errno.h> |
| 38 | #include <linux/sched.h> |
| 39 | #include <linux/ioctl.h> |
| 40 | #include <linux/delay.h> |
| 41 | #include <linux/stddef.h> |
| 42 | #include <asm/page.h> |
| 43 | #include <asm/uaccess.h> |
| 44 | #include <linux/page-flags.h> |
Mauro Carvalho Chehab | 7e0a16f | 2009-03-10 05:31:34 -0300 | [diff] [blame] | 45 | #include <linux/videodev.h> |
Mauro Carvalho Chehab | 2864462 | 2008-07-20 20:26:54 -0300 | [diff] [blame] | 46 | #include <media/v4l2-ioctl.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | #include "w9968cf.h" |
| 49 | #include "w9968cf_decoder.h" |
| 50 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 51 | static struct w9968cf_vpp_t* w9968cf_vpp; |
| 52 | static DECLARE_WAIT_QUEUE_HEAD(w9968cf_vppmod_wait); |
| 53 | |
| 54 | static LIST_HEAD(w9968cf_dev_list); /* head of V4L registered cameras list */ |
| 55 | static DEFINE_MUTEX(w9968cf_devlist_mutex); /* semaphore for list traversal */ |
| 56 | |
| 57 | static DECLARE_RWSEM(w9968cf_disconnect); /* prevent races with open() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | |
| 60 | /**************************************************************************** |
| 61 | * Module macros and parameters * |
| 62 | ****************************************************************************/ |
| 63 | |
| 64 | MODULE_DEVICE_TABLE(usb, winbond_id_table); |
| 65 | |
| 66 | MODULE_AUTHOR(W9968CF_MODULE_AUTHOR" "W9968CF_AUTHOR_EMAIL); |
| 67 | MODULE_DESCRIPTION(W9968CF_MODULE_NAME); |
| 68 | MODULE_VERSION(W9968CF_MODULE_VERSION); |
| 69 | MODULE_LICENSE(W9968CF_MODULE_LICENSE); |
| 70 | MODULE_SUPPORTED_DEVICE("Video"); |
| 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | static unsigned short simcams = W9968CF_SIMCAMS; |
| 73 | static short video_nr[]={[0 ... W9968CF_MAX_DEVICES-1] = -1}; /*-1=first free*/ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 74 | static unsigned int packet_size[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 75 | W9968CF_PACKET_SIZE}; |
| 76 | static unsigned short max_buffers[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 77 | W9968CF_BUFFERS}; |
| 78 | static int double_buffer[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 79 | W9968CF_DOUBLE_BUFFER}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | static int clamping[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_CLAMPING}; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 81 | static unsigned short filter_type[]= {[0 ... W9968CF_MAX_DEVICES-1] = |
| 82 | W9968CF_FILTER_TYPE}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | static int largeview[]= {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_LARGEVIEW}; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 84 | static unsigned short decompression[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 85 | W9968CF_DECOMPRESSION}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | static int upscaling[]= {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_UPSCALING}; |
| 87 | static unsigned short force_palette[] = {[0 ... W9968CF_MAX_DEVICES-1] = 0}; |
| 88 | static int force_rgb[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_FORCE_RGB}; |
| 89 | static int autobright[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_AUTOBRIGHT}; |
| 90 | static int autoexp[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_AUTOEXP}; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 91 | static unsigned short lightfreq[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 92 | W9968CF_LIGHTFREQ}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | static int bandingfilter[] = {[0 ... W9968CF_MAX_DEVICES-1]= |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 94 | W9968CF_BANDINGFILTER}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | static short clockdiv[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_CLOCKDIV}; |
| 96 | static int backlight[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_BACKLIGHT}; |
| 97 | static int mirror[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_MIRROR}; |
| 98 | static int monochrome[] = {[0 ... W9968CF_MAX_DEVICES-1]=W9968CF_MONOCHROME}; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 99 | static unsigned int brightness[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 100 | W9968CF_BRIGHTNESS}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | static unsigned int hue[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_HUE}; |
| 102 | static unsigned int colour[]={[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_COLOUR}; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 103 | static unsigned int contrast[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 104 | W9968CF_CONTRAST}; |
| 105 | static unsigned int whiteness[] = {[0 ... W9968CF_MAX_DEVICES-1] = |
| 106 | W9968CF_WHITENESS}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | #ifdef W9968CF_DEBUG |
| 108 | static unsigned short debug = W9968CF_DEBUG_LEVEL; |
| 109 | static int specific_debug = W9968CF_SPECIFIC_DEBUG; |
| 110 | #endif |
| 111 | |
| 112 | static unsigned int param_nv[24]; /* number of values per parameter */ |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | module_param(simcams, ushort, 0644); |
| 115 | module_param_array(video_nr, short, ¶m_nv[0], 0444); |
| 116 | module_param_array(packet_size, uint, ¶m_nv[1], 0444); |
| 117 | module_param_array(max_buffers, ushort, ¶m_nv[2], 0444); |
| 118 | module_param_array(double_buffer, bool, ¶m_nv[3], 0444); |
| 119 | module_param_array(clamping, bool, ¶m_nv[4], 0444); |
| 120 | module_param_array(filter_type, ushort, ¶m_nv[5], 0444); |
| 121 | module_param_array(largeview, bool, ¶m_nv[6], 0444); |
| 122 | module_param_array(decompression, ushort, ¶m_nv[7], 0444); |
| 123 | module_param_array(upscaling, bool, ¶m_nv[8], 0444); |
| 124 | module_param_array(force_palette, ushort, ¶m_nv[9], 0444); |
| 125 | module_param_array(force_rgb, ushort, ¶m_nv[10], 0444); |
| 126 | module_param_array(autobright, bool, ¶m_nv[11], 0444); |
| 127 | module_param_array(autoexp, bool, ¶m_nv[12], 0444); |
| 128 | module_param_array(lightfreq, ushort, ¶m_nv[13], 0444); |
| 129 | module_param_array(bandingfilter, bool, ¶m_nv[14], 0444); |
| 130 | module_param_array(clockdiv, short, ¶m_nv[15], 0444); |
| 131 | module_param_array(backlight, bool, ¶m_nv[16], 0444); |
| 132 | module_param_array(mirror, bool, ¶m_nv[17], 0444); |
| 133 | module_param_array(monochrome, bool, ¶m_nv[18], 0444); |
| 134 | module_param_array(brightness, uint, ¶m_nv[19], 0444); |
| 135 | module_param_array(hue, uint, ¶m_nv[20], 0444); |
| 136 | module_param_array(colour, uint, ¶m_nv[21], 0444); |
| 137 | module_param_array(contrast, uint, ¶m_nv[22], 0444); |
| 138 | module_param_array(whiteness, uint, ¶m_nv[23], 0444); |
| 139 | #ifdef W9968CF_DEBUG |
| 140 | module_param(debug, ushort, 0644); |
| 141 | module_param(specific_debug, bool, 0644); |
| 142 | #endif |
| 143 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 144 | MODULE_PARM_DESC(simcams, |
| 145 | "\n<n> Number of cameras allowed to stream simultaneously." |
| 146 | "\nn may vary from 0 to " |
| 147 | __MODULE_STRING(W9968CF_MAX_DEVICES)"." |
| 148 | "\nDefault value is "__MODULE_STRING(W9968CF_SIMCAMS)"." |
| 149 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | MODULE_PARM_DESC(video_nr, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 151 | "\n<-1|n[,...]> Specify V4L minor mode number." |
| 152 | "\n -1 = use next available (default)" |
| 153 | "\n n = use minor number n (integer >= 0)" |
| 154 | "\nYou can specify up to "__MODULE_STRING(W9968CF_MAX_DEVICES) |
| 155 | " cameras this way." |
| 156 | "\nFor example:" |
| 157 | "\nvideo_nr=-1,2,-1 would assign minor number 2 to" |
| 158 | "\nthe second camera and use auto for the first" |
| 159 | "\none and for every other camera." |
| 160 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | MODULE_PARM_DESC(packet_size, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 162 | "\n<n[,...]> Specify the maximum data payload" |
| 163 | "\nsize in bytes for alternate settings, for each device." |
| 164 | "\nn is scaled between 63 and 1023 " |
| 165 | "(default is "__MODULE_STRING(W9968CF_PACKET_SIZE)")." |
| 166 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | MODULE_PARM_DESC(max_buffers, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 168 | "\n<n[,...]> For advanced users." |
| 169 | "\nSpecify the maximum number of video frame buffers" |
| 170 | "\nto allocate for each device, from 2 to " |
| 171 | __MODULE_STRING(W9968CF_MAX_BUFFERS) |
| 172 | ". (default is "__MODULE_STRING(W9968CF_BUFFERS)")." |
| 173 | "\n"); |
| 174 | MODULE_PARM_DESC(double_buffer, |
| 175 | "\n<0|1[,...]> " |
| 176 | "Hardware double buffering: 0 disabled, 1 enabled." |
| 177 | "\nIt should be enabled if you want smooth video output: if" |
| 178 | "\nyou obtain out of sync. video, disable it, or try to" |
| 179 | "\ndecrease the 'clockdiv' module parameter value." |
| 180 | "\nDefault value is "__MODULE_STRING(W9968CF_DOUBLE_BUFFER) |
| 181 | " for every device." |
| 182 | "\n"); |
| 183 | MODULE_PARM_DESC(clamping, |
| 184 | "\n<0|1[,...]> Video data clamping: 0 disabled, 1 enabled." |
| 185 | "\nDefault value is "__MODULE_STRING(W9968CF_CLAMPING) |
| 186 | " for every device." |
| 187 | "\n"); |
| 188 | MODULE_PARM_DESC(filter_type, |
| 189 | "\n<0|1|2[,...]> Video filter type." |
| 190 | "\n0 none, 1 (1-2-1) 3-tap filter, " |
| 191 | "2 (2-3-6-3-2) 5-tap filter." |
| 192 | "\nDefault value is "__MODULE_STRING(W9968CF_FILTER_TYPE) |
| 193 | " for every device." |
| 194 | "\nThe filter is used to reduce noise and aliasing artifacts" |
| 195 | "\nproduced by the CCD or CMOS image sensor, and the scaling" |
| 196 | " process." |
| 197 | "\n"); |
| 198 | MODULE_PARM_DESC(largeview, |
| 199 | "\n<0|1[,...]> Large view: 0 disabled, 1 enabled." |
| 200 | "\nDefault value is "__MODULE_STRING(W9968CF_LARGEVIEW) |
| 201 | " for every device." |
| 202 | "\n"); |
| 203 | MODULE_PARM_DESC(upscaling, |
| 204 | "\n<0|1[,...]> Software scaling (for non-compressed video):" |
| 205 | "\n0 disabled, 1 enabled." |
| 206 | "\nDisable it if you have a slow CPU or you don't have" |
| 207 | " enough memory." |
| 208 | "\nDefault value is "__MODULE_STRING(W9968CF_UPSCALING) |
| 209 | " for every device." |
| 210 | "\nIf 'w9968cf-vpp' is not present, this parameter is" |
| 211 | " set to 0." |
| 212 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | MODULE_PARM_DESC(decompression, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 214 | "\n<0|1|2[,...]> Software video decompression:" |
| 215 | "\n- 0 disables decompression (doesn't allow formats needing" |
| 216 | " decompression)" |
| 217 | "\n- 1 forces decompression (allows formats needing" |
| 218 | " decompression only);" |
| 219 | "\n- 2 allows any permitted formats." |
| 220 | "\nFormats supporting compressed video are YUV422P and" |
| 221 | " YUV420P/YUV420 " |
| 222 | "\nin any resolutions where both width and height are " |
| 223 | "a multiple of 16." |
| 224 | "\nDefault value is "__MODULE_STRING(W9968CF_DECOMPRESSION) |
| 225 | " for every device." |
| 226 | "\nIf 'w9968cf-vpp' is not present, forcing decompression is " |
| 227 | "\nnot allowed; in this case this parameter is set to 2." |
| 228 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | MODULE_PARM_DESC(force_palette, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 230 | "\n<0" |
| 231 | "|" __MODULE_STRING(VIDEO_PALETTE_UYVY) |
| 232 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV420) |
| 233 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV422P) |
| 234 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV420P) |
| 235 | "|" __MODULE_STRING(VIDEO_PALETTE_YUYV) |
| 236 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV422) |
| 237 | "|" __MODULE_STRING(VIDEO_PALETTE_GREY) |
| 238 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB555) |
| 239 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB565) |
| 240 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB24) |
| 241 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB32) |
| 242 | "[,...]>" |
| 243 | " Force picture palette." |
| 244 | "\nIn order:" |
| 245 | "\n- 0 allows any of the following formats:" |
| 246 | "\n- UYVY 16 bpp - Original video, compression disabled" |
| 247 | "\n- YUV420 12 bpp - Original video, compression enabled" |
| 248 | "\n- YUV422P 16 bpp - Original video, compression enabled" |
| 249 | "\n- YUV420P 12 bpp - Original video, compression enabled" |
| 250 | "\n- YUVY 16 bpp - Software conversion from UYVY" |
| 251 | "\n- YUV422 16 bpp - Software conversion from UYVY" |
| 252 | "\n- GREY 8 bpp - Software conversion from UYVY" |
| 253 | "\n- RGB555 16 bpp - Software conversion from UYVY" |
| 254 | "\n- RGB565 16 bpp - Software conversion from UYVY" |
| 255 | "\n- RGB24 24 bpp - Software conversion from UYVY" |
| 256 | "\n- RGB32 32 bpp - Software conversion from UYVY" |
| 257 | "\nWhen not 0, this parameter will override 'decompression'." |
| 258 | "\nDefault value is 0 for every device." |
| 259 | "\nInitial palette is " |
| 260 | __MODULE_STRING(W9968CF_PALETTE_DECOMP_ON)"." |
| 261 | "\nIf 'w9968cf-vpp' is not present, this parameter is" |
| 262 | " set to 9 (UYVY)." |
| 263 | "\n"); |
| 264 | MODULE_PARM_DESC(force_rgb, |
| 265 | "\n<0|1[,...]> Read RGB video data instead of BGR:" |
| 266 | "\n 1 = use RGB component ordering." |
| 267 | "\n 0 = use BGR component ordering." |
| 268 | "\nThis parameter has effect when using RGBX palettes only." |
| 269 | "\nDefault value is "__MODULE_STRING(W9968CF_FORCE_RGB) |
| 270 | " for every device." |
| 271 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | MODULE_PARM_DESC(autobright, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 273 | "\n<0|1[,...]> Image sensor automatically changes brightness:" |
| 274 | "\n 0 = no, 1 = yes" |
| 275 | "\nDefault value is "__MODULE_STRING(W9968CF_AUTOBRIGHT) |
| 276 | " for every device." |
| 277 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | MODULE_PARM_DESC(autoexp, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 279 | "\n<0|1[,...]> Image sensor automatically changes exposure:" |
| 280 | "\n 0 = no, 1 = yes" |
| 281 | "\nDefault value is "__MODULE_STRING(W9968CF_AUTOEXP) |
| 282 | " for every device." |
| 283 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | MODULE_PARM_DESC(lightfreq, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 285 | "\n<50|60[,...]> Light frequency in Hz:" |
| 286 | "\n 50 for European and Asian lighting," |
| 287 | " 60 for American lighting." |
| 288 | "\nDefault value is "__MODULE_STRING(W9968CF_LIGHTFREQ) |
| 289 | " for every device." |
| 290 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | MODULE_PARM_DESC(bandingfilter, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 292 | "\n<0|1[,...]> Banding filter to reduce effects of" |
| 293 | " fluorescent lighting:" |
| 294 | "\n 0 disabled, 1 enabled." |
| 295 | "\nThis filter tries to reduce the pattern of horizontal" |
| 296 | "\nlight/dark bands caused by some (usually fluorescent)" |
| 297 | " lighting." |
| 298 | "\nDefault value is "__MODULE_STRING(W9968CF_BANDINGFILTER) |
| 299 | " for every device." |
| 300 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | MODULE_PARM_DESC(clockdiv, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 302 | "\n<-1|n[,...]> " |
| 303 | "Force pixel clock divisor to a specific value (for experts):" |
| 304 | "\n n may vary from 0 to 127." |
| 305 | "\n -1 for automatic value." |
| 306 | "\nSee also the 'double_buffer' module parameter." |
| 307 | "\nDefault value is "__MODULE_STRING(W9968CF_CLOCKDIV) |
| 308 | " for every device." |
| 309 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | MODULE_PARM_DESC(backlight, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 311 | "\n<0|1[,...]> Objects are lit from behind:" |
| 312 | "\n 0 = no, 1 = yes" |
| 313 | "\nDefault value is "__MODULE_STRING(W9968CF_BACKLIGHT) |
| 314 | " for every device." |
| 315 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | MODULE_PARM_DESC(mirror, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 317 | "\n<0|1[,...]> Reverse image horizontally:" |
| 318 | "\n 0 = no, 1 = yes" |
| 319 | "\nDefault value is "__MODULE_STRING(W9968CF_MIRROR) |
| 320 | " for every device." |
| 321 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | MODULE_PARM_DESC(monochrome, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 323 | "\n<0|1[,...]> Use image sensor as monochrome sensor:" |
| 324 | "\n 0 = no, 1 = yes" |
| 325 | "\nNot all the sensors support monochrome color." |
| 326 | "\nDefault value is "__MODULE_STRING(W9968CF_MONOCHROME) |
| 327 | " for every device." |
| 328 | "\n"); |
| 329 | MODULE_PARM_DESC(brightness, |
| 330 | "\n<n[,...]> Set picture brightness (0-65535)." |
| 331 | "\nDefault value is "__MODULE_STRING(W9968CF_BRIGHTNESS) |
| 332 | " for every device." |
| 333 | "\nThis parameter has no effect if 'autobright' is enabled." |
| 334 | "\n"); |
| 335 | MODULE_PARM_DESC(hue, |
| 336 | "\n<n[,...]> Set picture hue (0-65535)." |
| 337 | "\nDefault value is "__MODULE_STRING(W9968CF_HUE) |
| 338 | " for every device." |
| 339 | "\n"); |
| 340 | MODULE_PARM_DESC(colour, |
| 341 | "\n<n[,...]> Set picture saturation (0-65535)." |
| 342 | "\nDefault value is "__MODULE_STRING(W9968CF_COLOUR) |
| 343 | " for every device." |
| 344 | "\n"); |
| 345 | MODULE_PARM_DESC(contrast, |
| 346 | "\n<n[,...]> Set picture contrast (0-65535)." |
| 347 | "\nDefault value is "__MODULE_STRING(W9968CF_CONTRAST) |
| 348 | " for every device." |
| 349 | "\n"); |
| 350 | MODULE_PARM_DESC(whiteness, |
| 351 | "\n<n[,...]> Set picture whiteness (0-65535)." |
| 352 | "\nDefault value is "__MODULE_STRING(W9968CF_WHITENESS) |
| 353 | " for every device." |
| 354 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | #ifdef W9968CF_DEBUG |
| 356 | MODULE_PARM_DESC(debug, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 357 | "\n<n> Debugging information level, from 0 to 6:" |
| 358 | "\n0 = none (use carefully)" |
| 359 | "\n1 = critical errors" |
| 360 | "\n2 = significant informations" |
| 361 | "\n3 = configuration or general messages" |
| 362 | "\n4 = warnings" |
| 363 | "\n5 = called functions" |
| 364 | "\n6 = function internals" |
| 365 | "\nLevel 5 and 6 are useful for testing only, when only " |
| 366 | "one device is used." |
| 367 | "\nDefault value is "__MODULE_STRING(W9968CF_DEBUG_LEVEL)"." |
| 368 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | MODULE_PARM_DESC(specific_debug, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 370 | "\n<0|1> Enable or disable specific debugging messages:" |
| 371 | "\n0 = print messages concerning every level" |
| 372 | " <= 'debug' level." |
| 373 | "\n1 = print messages concerning the level" |
| 374 | " indicated by 'debug'." |
| 375 | "\nDefault value is " |
| 376 | __MODULE_STRING(W9968CF_SPECIFIC_DEBUG)"." |
| 377 | "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | #endif /* W9968CF_DEBUG */ |
| 379 | |
| 380 | |
| 381 | |
| 382 | /**************************************************************************** |
| 383 | * Some prototypes * |
| 384 | ****************************************************************************/ |
| 385 | |
| 386 | /* Video4linux interface */ |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 387 | static const struct v4l2_file_operations w9968cf_fops; |
| 388 | static int w9968cf_open(struct file *); |
| 389 | static int w9968cf_release(struct file *); |
| 390 | static int w9968cf_mmap(struct file *, struct vm_area_struct *); |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 391 | static long w9968cf_ioctl(struct file *, unsigned, unsigned long); |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 392 | static ssize_t w9968cf_read(struct file *, char __user *, size_t, loff_t *); |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 393 | static long w9968cf_v4l_ioctl(struct file *, unsigned int, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 394 | void __user *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
| 396 | /* USB-specific */ |
| 397 | static int w9968cf_start_transfer(struct w9968cf_device*); |
| 398 | static int w9968cf_stop_transfer(struct w9968cf_device*); |
| 399 | static int w9968cf_write_reg(struct w9968cf_device*, u16 value, u16 index); |
| 400 | static int w9968cf_read_reg(struct w9968cf_device*, u16 index); |
| 401 | static int w9968cf_write_fsb(struct w9968cf_device*, u16* data); |
| 402 | static int w9968cf_write_sb(struct w9968cf_device*, u16 value); |
| 403 | static int w9968cf_read_sb(struct w9968cf_device*); |
| 404 | static int w9968cf_upload_quantizationtables(struct w9968cf_device*); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 405 | static void w9968cf_urb_complete(struct urb *urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | /* Low-level I2C (SMBus) I/O */ |
| 408 | static int w9968cf_smbus_start(struct w9968cf_device*); |
| 409 | static int w9968cf_smbus_stop(struct w9968cf_device*); |
| 410 | static int w9968cf_smbus_write_byte(struct w9968cf_device*, u8 v); |
| 411 | static int w9968cf_smbus_read_byte(struct w9968cf_device*, u8* v); |
| 412 | static int w9968cf_smbus_write_ack(struct w9968cf_device*); |
| 413 | static int w9968cf_smbus_read_ack(struct w9968cf_device*); |
| 414 | static int w9968cf_smbus_refresh_bus(struct w9968cf_device*); |
| 415 | static int w9968cf_i2c_adap_read_byte(struct w9968cf_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 416 | u16 address, u8* value); |
| 417 | static int w9968cf_i2c_adap_read_byte_data(struct w9968cf_device*, u16 address, |
| 418 | u8 subaddress, u8* value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | static int w9968cf_i2c_adap_write_byte(struct w9968cf_device*, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 420 | u16 address, u8 subaddress); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | static int w9968cf_i2c_adap_fastwrite_byte_data(struct w9968cf_device*, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 422 | u16 address, u8 subaddress, |
| 423 | u8 value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
| 425 | /* I2C interface to kernel */ |
| 426 | static int w9968cf_i2c_init(struct w9968cf_device*); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 427 | static int w9968cf_i2c_smbus_xfer(struct i2c_adapter*, u16 addr, |
| 428 | unsigned short flags, char read_write, |
| 429 | u8 command, int size, union i2c_smbus_data*); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | static u32 w9968cf_i2c_func(struct i2c_adapter*); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* Memory management */ |
| 433 | static void* rvmalloc(unsigned long size); |
| 434 | static void rvfree(void *mem, unsigned long size); |
| 435 | static void w9968cf_deallocate_memory(struct w9968cf_device*); |
| 436 | static int w9968cf_allocate_memory(struct w9968cf_device*); |
| 437 | |
| 438 | /* High-level image sensor control functions */ |
| 439 | static int w9968cf_sensor_set_control(struct w9968cf_device*,int cid,int val); |
| 440 | static int w9968cf_sensor_get_control(struct w9968cf_device*,int cid,int *val); |
| 441 | static int w9968cf_sensor_cmd(struct w9968cf_device*, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 442 | unsigned int cmd, void *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | static int w9968cf_sensor_init(struct w9968cf_device*); |
| 444 | static int w9968cf_sensor_update_settings(struct w9968cf_device*); |
| 445 | static int w9968cf_sensor_get_picture(struct w9968cf_device*); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 446 | static int w9968cf_sensor_update_picture(struct w9968cf_device*, |
| 447 | struct video_picture pict); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | /* Other helper functions */ |
| 450 | static void w9968cf_configure_camera(struct w9968cf_device*,struct usb_device*, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 451 | enum w9968cf_model_id, |
| 452 | const unsigned short dev_nr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | static void w9968cf_adjust_configuration(struct w9968cf_device*); |
| 454 | static int w9968cf_turn_on_led(struct w9968cf_device*); |
| 455 | static int w9968cf_init_chip(struct w9968cf_device*); |
| 456 | static inline u16 w9968cf_valid_palette(u16 palette); |
| 457 | static inline u16 w9968cf_valid_depth(u16 palette); |
| 458 | static inline u8 w9968cf_need_decompression(u16 palette); |
| 459 | static int w9968cf_set_picture(struct w9968cf_device*, struct video_picture); |
| 460 | static int w9968cf_set_window(struct w9968cf_device*, struct video_window); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 461 | static int w9968cf_postprocess_frame(struct w9968cf_device*, |
| 462 | struct w9968cf_frame_t*); |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 463 | static int w9968cf_adjust_window_size(struct w9968cf_device*, u32 *w, u32 *h); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | static void w9968cf_init_framelist(struct w9968cf_device*); |
| 465 | static void w9968cf_push_frame(struct w9968cf_device*, u8 f_num); |
| 466 | static void w9968cf_pop_frame(struct w9968cf_device*,struct w9968cf_frame_t**); |
| 467 | static void w9968cf_release_resources(struct w9968cf_device*); |
| 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
| 470 | |
| 471 | /**************************************************************************** |
| 472 | * Symbolic names * |
| 473 | ****************************************************************************/ |
| 474 | |
| 475 | /* Used to represent a list of values and their respective symbolic names */ |
| 476 | struct w9968cf_symbolic_list { |
| 477 | const int num; |
| 478 | const char *name; |
| 479 | }; |
| 480 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 481 | /*-------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | Returns the name of the matching element in the symbolic_list array. The |
| 483 | end of the list must be marked with an element that has a NULL name. |
| 484 | --------------------------------------------------------------------------*/ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 485 | static inline const char * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | symbolic(struct w9968cf_symbolic_list list[], const int num) |
| 487 | { |
| 488 | int i; |
| 489 | |
| 490 | for (i = 0; list[i].name != NULL; i++) |
| 491 | if (list[i].num == num) |
| 492 | return (list[i].name); |
| 493 | |
| 494 | return "Unknown"; |
| 495 | } |
| 496 | |
| 497 | static struct w9968cf_symbolic_list camlist[] = { |
| 498 | { W9968CF_MOD_GENERIC, "W996[87]CF JPEG USB Dual Mode Camera" }, |
| 499 | { W9968CF_MOD_CLVBWGP, "Creative Labs Video Blaster WebCam Go Plus" }, |
| 500 | |
| 501 | /* Other cameras (having the same descriptors as Generic W996[87]CF) */ |
| 502 | { W9968CF_MOD_ADPVDMA, "Aroma Digi Pen VGA Dual Mode ADG-5000" }, |
| 503 | { W9986CF_MOD_AAU, "AVerMedia AVerTV USB" }, |
| 504 | { W9968CF_MOD_CLVBWG, "Creative Labs Video Blaster WebCam Go" }, |
| 505 | { W9968CF_MOD_LL, "Lebon LDC-035A" }, |
| 506 | { W9968CF_MOD_EEEMC, "Ezonics EZ-802 EZMega Cam" }, |
| 507 | { W9968CF_MOD_OOE, "OmniVision OV8610-EDE" }, |
| 508 | { W9968CF_MOD_ODPVDMPC, "OPCOM Digi Pen VGA Dual Mode Pen Camera" }, |
| 509 | { W9968CF_MOD_PDPII, "Pretec Digi Pen-II" }, |
| 510 | { W9968CF_MOD_PDP480, "Pretec DigiPen-480" }, |
| 511 | |
| 512 | { -1, NULL } |
| 513 | }; |
| 514 | |
| 515 | static struct w9968cf_symbolic_list senlist[] = { |
| 516 | { CC_OV76BE, "OV76BE" }, |
| 517 | { CC_OV7610, "OV7610" }, |
| 518 | { CC_OV7620, "OV7620" }, |
| 519 | { CC_OV7620AE, "OV7620AE" }, |
| 520 | { CC_OV6620, "OV6620" }, |
| 521 | { CC_OV6630, "OV6630" }, |
| 522 | { CC_OV6630AE, "OV6630AE" }, |
| 523 | { CC_OV6630AF, "OV6630AF" }, |
| 524 | { -1, NULL } |
| 525 | }; |
| 526 | |
| 527 | /* Video4Linux1 palettes */ |
| 528 | static struct w9968cf_symbolic_list v4l1_plist[] = { |
| 529 | { VIDEO_PALETTE_GREY, "GREY" }, |
| 530 | { VIDEO_PALETTE_HI240, "HI240" }, |
| 531 | { VIDEO_PALETTE_RGB565, "RGB565" }, |
| 532 | { VIDEO_PALETTE_RGB24, "RGB24" }, |
| 533 | { VIDEO_PALETTE_RGB32, "RGB32" }, |
| 534 | { VIDEO_PALETTE_RGB555, "RGB555" }, |
| 535 | { VIDEO_PALETTE_YUV422, "YUV422" }, |
| 536 | { VIDEO_PALETTE_YUYV, "YUYV" }, |
| 537 | { VIDEO_PALETTE_UYVY, "UYVY" }, |
| 538 | { VIDEO_PALETTE_YUV420, "YUV420" }, |
| 539 | { VIDEO_PALETTE_YUV411, "YUV411" }, |
| 540 | { VIDEO_PALETTE_RAW, "RAW" }, |
| 541 | { VIDEO_PALETTE_YUV422P, "YUV422P" }, |
| 542 | { VIDEO_PALETTE_YUV411P, "YUV411P" }, |
| 543 | { VIDEO_PALETTE_YUV420P, "YUV420P" }, |
| 544 | { VIDEO_PALETTE_YUV410P, "YUV410P" }, |
| 545 | { -1, NULL } |
| 546 | }; |
| 547 | |
| 548 | /* Decoder error codes: */ |
| 549 | static struct w9968cf_symbolic_list decoder_errlist[] = { |
| 550 | { W9968CF_DEC_ERR_CORRUPTED_DATA, "Corrupted data" }, |
| 551 | { W9968CF_DEC_ERR_BUF_OVERFLOW, "Buffer overflow" }, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 552 | { W9968CF_DEC_ERR_NO_SOI, "SOI marker not found" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | { W9968CF_DEC_ERR_NO_SOF0, "SOF0 marker not found" }, |
| 554 | { W9968CF_DEC_ERR_NO_SOS, "SOS marker not found" }, |
| 555 | { W9968CF_DEC_ERR_NO_EOI, "EOI marker not found" }, |
| 556 | { -1, NULL } |
| 557 | }; |
| 558 | |
| 559 | /* URB error codes: */ |
| 560 | static struct w9968cf_symbolic_list urb_errlist[] = { |
| 561 | { -ENOMEM, "No memory for allocation of internal structures" }, |
| 562 | { -ENOSPC, "The host controller's bandwidth is already consumed" }, |
| 563 | { -ENOENT, "URB was canceled by unlink_urb" }, |
| 564 | { -EXDEV, "ISO transfer only partially completed" }, |
| 565 | { -EAGAIN, "Too match scheduled for the future" }, |
| 566 | { -ENXIO, "URB already queued" }, |
| 567 | { -EFBIG, "Too much ISO frames requested" }, |
| 568 | { -ENOSR, "Buffer error (overrun)" }, |
| 569 | { -EPIPE, "Specified endpoint is stalled (device not responding)"}, |
Pete Zaitcev | 38e2bfc | 2006-09-18 22:49:02 -0700 | [diff] [blame] | 570 | { -EOVERFLOW, "Babble (too much data)" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | { -EPROTO, "Bit-stuff error (bad cable?)" }, |
| 572 | { -EILSEQ, "CRC/Timeout" }, |
Pete Zaitcev | 38e2bfc | 2006-09-18 22:49:02 -0700 | [diff] [blame] | 573 | { -ETIME, "Device does not respond to token" }, |
| 574 | { -ETIMEDOUT, "Device does not respond to command" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | { -1, NULL } |
| 576 | }; |
| 577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | /**************************************************************************** |
| 579 | * Memory management functions * |
| 580 | ****************************************************************************/ |
| 581 | static void* rvmalloc(unsigned long size) |
| 582 | { |
| 583 | void* mem; |
| 584 | unsigned long adr; |
| 585 | |
| 586 | size = PAGE_ALIGN(size); |
| 587 | mem = vmalloc_32(size); |
| 588 | if (!mem) |
| 589 | return NULL; |
| 590 | |
| 591 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| 592 | adr = (unsigned long) mem; |
| 593 | while (size > 0) { |
| 594 | SetPageReserved(vmalloc_to_page((void *)adr)); |
| 595 | adr += PAGE_SIZE; |
| 596 | size -= PAGE_SIZE; |
| 597 | } |
| 598 | |
| 599 | return mem; |
| 600 | } |
| 601 | |
| 602 | |
| 603 | static void rvfree(void* mem, unsigned long size) |
| 604 | { |
| 605 | unsigned long adr; |
| 606 | |
| 607 | if (!mem) |
| 608 | return; |
| 609 | |
| 610 | adr = (unsigned long) mem; |
| 611 | while ((long) size > 0) { |
| 612 | ClearPageReserved(vmalloc_to_page((void *)adr)); |
| 613 | adr += PAGE_SIZE; |
| 614 | size -= PAGE_SIZE; |
| 615 | } |
| 616 | vfree(mem); |
| 617 | } |
| 618 | |
| 619 | |
| 620 | /*-------------------------------------------------------------------------- |
| 621 | Deallocate previously allocated memory. |
| 622 | --------------------------------------------------------------------------*/ |
| 623 | static void w9968cf_deallocate_memory(struct w9968cf_device* cam) |
| 624 | { |
| 625 | u8 i; |
| 626 | |
| 627 | /* Free the isochronous transfer buffers */ |
| 628 | for (i = 0; i < W9968CF_URBS; i++) { |
| 629 | kfree(cam->transfer_buffer[i]); |
| 630 | cam->transfer_buffer[i] = NULL; |
| 631 | } |
| 632 | |
| 633 | /* Free temporary frame buffer */ |
| 634 | if (cam->frame_tmp.buffer) { |
| 635 | rvfree(cam->frame_tmp.buffer, cam->frame_tmp.size); |
| 636 | cam->frame_tmp.buffer = NULL; |
| 637 | } |
| 638 | |
| 639 | /* Free helper buffer */ |
| 640 | if (cam->frame_vpp.buffer) { |
| 641 | rvfree(cam->frame_vpp.buffer, cam->frame_vpp.size); |
| 642 | cam->frame_vpp.buffer = NULL; |
| 643 | } |
| 644 | |
| 645 | /* Free video frame buffers */ |
| 646 | if (cam->frame[0].buffer) { |
| 647 | rvfree(cam->frame[0].buffer, cam->nbuffers*cam->frame[0].size); |
| 648 | cam->frame[0].buffer = NULL; |
| 649 | } |
| 650 | |
| 651 | cam->nbuffers = 0; |
| 652 | |
| 653 | DBG(5, "Memory successfully deallocated") |
| 654 | } |
| 655 | |
| 656 | |
| 657 | /*-------------------------------------------------------------------------- |
| 658 | Allocate memory buffers for USB transfers and video frames. |
| 659 | This function is called by open() only. |
| 660 | Return 0 on success, a negative number otherwise. |
| 661 | --------------------------------------------------------------------------*/ |
| 662 | static int w9968cf_allocate_memory(struct w9968cf_device* cam) |
| 663 | { |
| 664 | const u16 p_size = wMaxPacketSize[cam->altsetting-1]; |
| 665 | void* buff = NULL; |
| 666 | unsigned long hw_bufsize, vpp_bufsize; |
| 667 | u8 i, bpp; |
| 668 | |
| 669 | /* NOTE: Deallocation is done elsewhere in case of error */ |
| 670 | |
| 671 | /* Calculate the max amount of raw data per frame from the device */ |
| 672 | hw_bufsize = cam->maxwidth*cam->maxheight*2; |
| 673 | |
| 674 | /* Calculate the max buf. size needed for post-processing routines */ |
| 675 | bpp = (w9968cf_vpp) ? 4 : 2; |
| 676 | if (cam->upscaling) |
| 677 | vpp_bufsize = max(W9968CF_MAX_WIDTH*W9968CF_MAX_HEIGHT*bpp, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 678 | cam->maxwidth*cam->maxheight*bpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | else |
| 680 | vpp_bufsize = cam->maxwidth*cam->maxheight*bpp; |
| 681 | |
| 682 | /* Allocate memory for the isochronous transfer buffers */ |
| 683 | for (i = 0; i < W9968CF_URBS; i++) { |
| 684 | if (!(cam->transfer_buffer[i] = |
Oliver Neukum | b10b417 | 2006-01-06 21:28:40 +0100 | [diff] [blame] | 685 | kzalloc(W9968CF_ISO_PACKETS*p_size, GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | DBG(1, "Couldn't allocate memory for the isochronous " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 687 | "transfer buffers (%u bytes)", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | p_size * W9968CF_ISO_PACKETS) |
| 689 | return -ENOMEM; |
| 690 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | /* Allocate memory for the temporary frame buffer */ |
| 694 | if (!(cam->frame_tmp.buffer = rvmalloc(hw_bufsize))) { |
| 695 | DBG(1, "Couldn't allocate memory for the temporary " |
| 696 | "video frame buffer (%lu bytes)", hw_bufsize) |
| 697 | return -ENOMEM; |
| 698 | } |
| 699 | cam->frame_tmp.size = hw_bufsize; |
| 700 | cam->frame_tmp.number = -1; |
| 701 | |
| 702 | /* Allocate memory for the helper buffer */ |
| 703 | if (w9968cf_vpp) { |
| 704 | if (!(cam->frame_vpp.buffer = rvmalloc(vpp_bufsize))) { |
| 705 | DBG(1, "Couldn't allocate memory for the helper buffer" |
| 706 | " (%lu bytes)", vpp_bufsize) |
| 707 | return -ENOMEM; |
| 708 | } |
| 709 | cam->frame_vpp.size = vpp_bufsize; |
| 710 | } else |
| 711 | cam->frame_vpp.buffer = NULL; |
| 712 | |
| 713 | /* Allocate memory for video frame buffers */ |
| 714 | cam->nbuffers = cam->max_buffers; |
| 715 | while (cam->nbuffers >= 2) { |
| 716 | if ((buff = rvmalloc(cam->nbuffers * vpp_bufsize))) |
| 717 | break; |
| 718 | else |
| 719 | cam->nbuffers--; |
| 720 | } |
| 721 | |
| 722 | if (!buff) { |
| 723 | DBG(1, "Couldn't allocate memory for the video frame buffers") |
| 724 | cam->nbuffers = 0; |
| 725 | return -ENOMEM; |
| 726 | } |
| 727 | |
| 728 | if (cam->nbuffers != cam->max_buffers) |
| 729 | DBG(2, "Couldn't allocate memory for %u video frame buffers. " |
| 730 | "Only memory for %u buffers has been allocated", |
| 731 | cam->max_buffers, cam->nbuffers) |
| 732 | |
| 733 | for (i = 0; i < cam->nbuffers; i++) { |
| 734 | cam->frame[i].buffer = buff + i*vpp_bufsize; |
| 735 | cam->frame[i].size = vpp_bufsize; |
| 736 | cam->frame[i].number = i; |
| 737 | /* Circular list */ |
| 738 | if (i != cam->nbuffers-1) |
| 739 | cam->frame[i].next = &cam->frame[i+1]; |
| 740 | else |
| 741 | cam->frame[i].next = &cam->frame[0]; |
| 742 | cam->frame[i].status = F_UNUSED; |
| 743 | } |
| 744 | |
| 745 | DBG(5, "Memory successfully allocated") |
| 746 | return 0; |
| 747 | } |
| 748 | |
| 749 | |
| 750 | |
| 751 | /**************************************************************************** |
| 752 | * USB-specific functions * |
| 753 | ****************************************************************************/ |
| 754 | |
| 755 | /*-------------------------------------------------------------------------- |
| 756 | This is an handler function which is called after the URBs are completed. |
| 757 | It collects multiple data packets coming from the camera by putting them |
| 758 | into frame buffers: one or more zero data length data packets are used to |
| 759 | mark the end of a video frame; the first non-zero data packet is the start |
| 760 | of the next video frame; if an error is encountered in a packet, the entire |
| 761 | video frame is discarded and grabbed again. |
| 762 | If there are no requested frames in the FIFO list, packets are collected into |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 763 | a temporary buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | --------------------------------------------------------------------------*/ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 765 | static void w9968cf_urb_complete(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | { |
| 767 | struct w9968cf_device* cam = (struct w9968cf_device*)urb->context; |
| 768 | struct w9968cf_frame_t** f; |
| 769 | unsigned int len, status; |
| 770 | void* pos; |
| 771 | u8 i; |
| 772 | int err = 0; |
| 773 | |
| 774 | if ((!cam->streaming) || cam->disconnected) { |
| 775 | DBG(4, "Got interrupt, but not streaming") |
| 776 | return; |
| 777 | } |
| 778 | |
| 779 | /* "(*f)" will be used instead of "cam->frame_current" */ |
| 780 | f = &cam->frame_current; |
| 781 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 782 | /* If a frame has been requested and we are grabbing into |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | the temporary frame, we'll switch to that requested frame */ |
| 784 | if ((*f) == &cam->frame_tmp && *cam->requested_frame) { |
| 785 | if (cam->frame_tmp.status == F_GRABBING) { |
| 786 | w9968cf_pop_frame(cam, &cam->frame_current); |
| 787 | (*f)->status = F_GRABBING; |
| 788 | (*f)->length = cam->frame_tmp.length; |
| 789 | memcpy((*f)->buffer, cam->frame_tmp.buffer, |
| 790 | (*f)->length); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 791 | DBG(6, "Switched from temp. frame to frame #%d", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | (*f)->number) |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | for (i = 0; i < urb->number_of_packets; i++) { |
| 797 | len = urb->iso_frame_desc[i].actual_length; |
| 798 | status = urb->iso_frame_desc[i].status; |
| 799 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; |
| 800 | |
| 801 | if (status && len != 0) { |
| 802 | DBG(4, "URB failed, error in data packet " |
| 803 | "(error #%u, %s)", |
| 804 | status, symbolic(urb_errlist, status)) |
| 805 | (*f)->status = F_ERROR; |
| 806 | continue; |
| 807 | } |
| 808 | |
| 809 | if (len) { /* start of frame */ |
| 810 | |
| 811 | if ((*f)->status == F_UNUSED) { |
| 812 | (*f)->status = F_GRABBING; |
| 813 | (*f)->length = 0; |
| 814 | } |
| 815 | |
| 816 | /* Buffer overflows shouldn't happen, however...*/ |
| 817 | if ((*f)->length + len > (*f)->size) { |
| 818 | DBG(4, "Buffer overflow: bad data packets") |
| 819 | (*f)->status = F_ERROR; |
| 820 | } |
| 821 | |
| 822 | if ((*f)->status == F_GRABBING) { |
| 823 | memcpy((*f)->buffer + (*f)->length, pos, len); |
| 824 | (*f)->length += len; |
| 825 | } |
| 826 | |
| 827 | } else if ((*f)->status == F_GRABBING) { /* end of frame */ |
| 828 | |
| 829 | DBG(6, "Frame #%d successfully grabbed", (*f)->number) |
| 830 | |
| 831 | if (cam->vpp_flag & VPP_DECOMPRESSION) { |
| 832 | err = w9968cf_vpp->check_headers((*f)->buffer, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 833 | (*f)->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | if (err) { |
| 835 | DBG(4, "Skip corrupted frame: %s", |
| 836 | symbolic(decoder_errlist, err)) |
| 837 | (*f)->status = F_UNUSED; |
| 838 | continue; /* grab this frame again */ |
| 839 | } |
| 840 | } |
| 841 | |
| 842 | (*f)->status = F_READY; |
| 843 | (*f)->queued = 0; |
| 844 | |
| 845 | /* Take a pointer to the new frame from the FIFO list. |
| 846 | If the list is empty,we'll use the temporary frame*/ |
| 847 | if (*cam->requested_frame) |
| 848 | w9968cf_pop_frame(cam, &cam->frame_current); |
| 849 | else { |
| 850 | cam->frame_current = &cam->frame_tmp; |
| 851 | (*f)->status = F_UNUSED; |
| 852 | } |
| 853 | |
| 854 | } else if ((*f)->status == F_ERROR) |
| 855 | (*f)->status = F_UNUSED; /* grab it again */ |
| 856 | |
| 857 | PDBGG("Frame length %lu | pack.#%u | pack.len. %u | state %d", |
| 858 | (unsigned long)(*f)->length, i, len, (*f)->status) |
| 859 | |
| 860 | } /* end for */ |
| 861 | |
| 862 | /* Resubmit this URB */ |
| 863 | urb->dev = cam->usbdev; |
| 864 | urb->status = 0; |
| 865 | spin_lock(&cam->urb_lock); |
| 866 | if (cam->streaming) |
| 867 | if ((err = usb_submit_urb(urb, GFP_ATOMIC))) { |
| 868 | cam->misconfigured = 1; |
| 869 | DBG(1, "Couldn't resubmit the URB: error %d, %s", |
| 870 | err, symbolic(urb_errlist, err)) |
| 871 | } |
| 872 | spin_unlock(&cam->urb_lock); |
| 873 | |
| 874 | /* Wake up the user process */ |
| 875 | wake_up_interruptible(&cam->wait_queue); |
| 876 | } |
| 877 | |
| 878 | |
| 879 | /*--------------------------------------------------------------------------- |
| 880 | Setup the URB structures for the isochronous transfer. |
| 881 | Submit the URBs so that the data transfer begins. |
| 882 | Return 0 on success, a negative number otherwise. |
| 883 | ---------------------------------------------------------------------------*/ |
| 884 | static int w9968cf_start_transfer(struct w9968cf_device* cam) |
| 885 | { |
| 886 | struct usb_device *udev = cam->usbdev; |
| 887 | struct urb* urb; |
| 888 | const u16 p_size = wMaxPacketSize[cam->altsetting-1]; |
| 889 | u16 w, h, d; |
| 890 | int vidcapt; |
| 891 | u32 t_size; |
| 892 | int err = 0; |
| 893 | s8 i, j; |
| 894 | |
| 895 | for (i = 0; i < W9968CF_URBS; i++) { |
| 896 | urb = usb_alloc_urb(W9968CF_ISO_PACKETS, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | if (!urb) { |
| 898 | for (j = 0; j < i; j++) |
| 899 | usb_free_urb(cam->urb[j]); |
| 900 | DBG(1, "Couldn't allocate the URB structures") |
| 901 | return -ENOMEM; |
| 902 | } |
| 903 | |
Douglas Schilling Landgraf | ff41efc | 2008-09-04 11:19:27 -0300 | [diff] [blame] | 904 | cam->urb[i] = urb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | urb->dev = udev; |
| 906 | urb->context = (void*)cam; |
| 907 | urb->pipe = usb_rcvisocpipe(udev, 1); |
| 908 | urb->transfer_flags = URB_ISO_ASAP; |
| 909 | urb->number_of_packets = W9968CF_ISO_PACKETS; |
| 910 | urb->complete = w9968cf_urb_complete; |
| 911 | urb->transfer_buffer = cam->transfer_buffer[i]; |
| 912 | urb->transfer_buffer_length = p_size*W9968CF_ISO_PACKETS; |
| 913 | urb->interval = 1; |
| 914 | for (j = 0; j < W9968CF_ISO_PACKETS; j++) { |
| 915 | urb->iso_frame_desc[j].offset = p_size*j; |
| 916 | urb->iso_frame_desc[j].length = p_size; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | /* Transfer size per frame, in WORD ! */ |
| 921 | d = cam->hw_depth; |
| 922 | w = cam->hw_width; |
| 923 | h = cam->hw_height; |
| 924 | |
| 925 | t_size = (w*h*d)/16; |
| 926 | |
| 927 | err = w9968cf_write_reg(cam, 0xbf17, 0x00); /* reset everything */ |
| 928 | err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* normal operation */ |
| 929 | |
| 930 | /* Transfer size */ |
| 931 | err += w9968cf_write_reg(cam, t_size & 0xffff, 0x3d); /* low bits */ |
| 932 | err += w9968cf_write_reg(cam, t_size >> 16, 0x3e); /* high bits */ |
| 933 | |
| 934 | if (cam->vpp_flag & VPP_DECOMPRESSION) |
| 935 | err += w9968cf_upload_quantizationtables(cam); |
| 936 | |
| 937 | vidcapt = w9968cf_read_reg(cam, 0x16); /* read picture settings */ |
| 938 | err += w9968cf_write_reg(cam, vidcapt|0x8000, 0x16); /* capt. enable */ |
| 939 | |
| 940 | err += usb_set_interface(udev, 0, cam->altsetting); |
| 941 | err += w9968cf_write_reg(cam, 0x8a05, 0x3c); /* USB FIFO enable */ |
| 942 | |
| 943 | if (err || (vidcapt < 0)) { |
| 944 | for (i = 0; i < W9968CF_URBS; i++) |
| 945 | usb_free_urb(cam->urb[i]); |
| 946 | DBG(1, "Couldn't tell the camera to start the data transfer") |
| 947 | return err; |
| 948 | } |
| 949 | |
| 950 | w9968cf_init_framelist(cam); |
| 951 | |
| 952 | /* Begin to grab into the temporary buffer */ |
| 953 | cam->frame_tmp.status = F_UNUSED; |
| 954 | cam->frame_tmp.queued = 0; |
| 955 | cam->frame_current = &cam->frame_tmp; |
| 956 | |
| 957 | if (!(cam->vpp_flag & VPP_DECOMPRESSION)) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 958 | DBG(5, "Isochronous transfer size: %lu bytes/frame", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | (unsigned long)t_size*2) |
| 960 | |
| 961 | DBG(5, "Starting the isochronous transfer...") |
| 962 | |
| 963 | cam->streaming = 1; |
| 964 | |
| 965 | /* Submit the URBs */ |
| 966 | for (i = 0; i < W9968CF_URBS; i++) { |
| 967 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); |
| 968 | if (err) { |
| 969 | cam->streaming = 0; |
| 970 | for (j = i-1; j >= 0; j--) { |
| 971 | usb_kill_urb(cam->urb[j]); |
| 972 | usb_free_urb(cam->urb[j]); |
| 973 | } |
| 974 | DBG(1, "Couldn't send a transfer request to the " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 975 | "USB core (error #%d, %s)", err, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | symbolic(urb_errlist, err)) |
| 977 | return err; |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | return 0; |
| 982 | } |
| 983 | |
| 984 | |
| 985 | /*-------------------------------------------------------------------------- |
| 986 | Stop the isochronous transfer and set alternate setting to 0 (0Mb/s). |
| 987 | Return 0 on success, a negative number otherwise. |
| 988 | --------------------------------------------------------------------------*/ |
| 989 | static int w9968cf_stop_transfer(struct w9968cf_device* cam) |
| 990 | { |
| 991 | struct usb_device *udev = cam->usbdev; |
| 992 | unsigned long lock_flags; |
| 993 | int err = 0; |
| 994 | s8 i; |
| 995 | |
| 996 | if (!cam->streaming) |
| 997 | return 0; |
| 998 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 999 | /* This avoids race conditions with usb_submit_urb() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | in the URB completition handler */ |
| 1001 | spin_lock_irqsave(&cam->urb_lock, lock_flags); |
| 1002 | cam->streaming = 0; |
| 1003 | spin_unlock_irqrestore(&cam->urb_lock, lock_flags); |
| 1004 | |
| 1005 | for (i = W9968CF_URBS-1; i >= 0; i--) |
| 1006 | if (cam->urb[i]) { |
| 1007 | usb_kill_urb(cam->urb[i]); |
| 1008 | usb_free_urb(cam->urb[i]); |
| 1009 | cam->urb[i] = NULL; |
| 1010 | } |
| 1011 | |
| 1012 | if (cam->disconnected) |
| 1013 | goto exit; |
| 1014 | |
| 1015 | err = w9968cf_write_reg(cam, 0x0a05, 0x3c); /* stop USB transfer */ |
| 1016 | err += usb_set_interface(udev, 0, 0); /* 0 Mb/s */ |
| 1017 | err += w9968cf_write_reg(cam, 0x0000, 0x39); /* disable JPEG encoder */ |
| 1018 | err += w9968cf_write_reg(cam, 0x0000, 0x16); /* stop video capture */ |
| 1019 | |
| 1020 | if (err) { |
| 1021 | DBG(2, "Failed to tell the camera to stop the isochronous " |
| 1022 | "transfer. However this is not a critical error.") |
| 1023 | return -EIO; |
| 1024 | } |
| 1025 | |
| 1026 | exit: |
| 1027 | DBG(5, "Isochronous transfer stopped") |
| 1028 | return 0; |
| 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | /*-------------------------------------------------------------------------- |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1033 | Write a W9968CF register. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | Return 0 on success, -1 otherwise. |
| 1035 | --------------------------------------------------------------------------*/ |
| 1036 | static int w9968cf_write_reg(struct w9968cf_device* cam, u16 value, u16 index) |
| 1037 | { |
| 1038 | struct usb_device* udev = cam->usbdev; |
| 1039 | int res; |
| 1040 | |
| 1041 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1042 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 1043 | value, index, NULL, 0, W9968CF_USB_CTRL_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | |
| 1045 | if (res < 0) |
| 1046 | DBG(4, "Failed to write a register " |
| 1047 | "(value 0x%04X, index 0x%02X, error #%d, %s)", |
| 1048 | value, index, res, symbolic(urb_errlist, res)) |
| 1049 | |
| 1050 | return (res >= 0) ? 0 : -1; |
| 1051 | } |
| 1052 | |
| 1053 | |
| 1054 | /*-------------------------------------------------------------------------- |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1055 | Read a W9968CF register. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | Return the register value on success, -1 otherwise. |
| 1057 | --------------------------------------------------------------------------*/ |
| 1058 | static int w9968cf_read_reg(struct w9968cf_device* cam, u16 index) |
| 1059 | { |
| 1060 | struct usb_device* udev = cam->usbdev; |
| 1061 | u16* buff = cam->control_buffer; |
| 1062 | int res; |
| 1063 | |
| 1064 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1065 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 1066 | 0, index, buff, 2, W9968CF_USB_CTRL_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | |
| 1068 | if (res < 0) |
| 1069 | DBG(4, "Failed to read a register " |
| 1070 | "(index 0x%02X, error #%d, %s)", |
| 1071 | index, res, symbolic(urb_errlist, res)) |
| 1072 | |
| 1073 | return (res >= 0) ? (int)(*buff) : -1; |
| 1074 | } |
| 1075 | |
| 1076 | |
| 1077 | /*-------------------------------------------------------------------------- |
| 1078 | Write 64-bit data to the fast serial bus registers. |
| 1079 | Return 0 on success, -1 otherwise. |
| 1080 | --------------------------------------------------------------------------*/ |
| 1081 | static int w9968cf_write_fsb(struct w9968cf_device* cam, u16* data) |
| 1082 | { |
| 1083 | struct usb_device* udev = cam->usbdev; |
| 1084 | u16 value; |
| 1085 | int res; |
| 1086 | |
| 1087 | value = *data++; |
| 1088 | |
| 1089 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1090 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, |
| 1091 | value, 0x06, data, 6, W9968CF_USB_CTRL_TIMEOUT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | |
| 1093 | if (res < 0) |
| 1094 | DBG(4, "Failed to write the FSB registers " |
| 1095 | "(error #%d, %s)", res, symbolic(urb_errlist, res)) |
| 1096 | |
| 1097 | return (res >= 0) ? 0 : -1; |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | /*-------------------------------------------------------------------------- |
| 1102 | Write data to the serial bus control register. |
| 1103 | Return 0 on success, a negative number otherwise. |
| 1104 | --------------------------------------------------------------------------*/ |
| 1105 | static int w9968cf_write_sb(struct w9968cf_device* cam, u16 value) |
| 1106 | { |
| 1107 | int err = 0; |
| 1108 | |
| 1109 | err = w9968cf_write_reg(cam, value, 0x01); |
| 1110 | udelay(W9968CF_I2C_BUS_DELAY); |
| 1111 | |
| 1112 | return err; |
| 1113 | } |
| 1114 | |
| 1115 | |
| 1116 | /*-------------------------------------------------------------------------- |
| 1117 | Read data from the serial bus control register. |
| 1118 | Return 0 on success, a negative number otherwise. |
| 1119 | --------------------------------------------------------------------------*/ |
| 1120 | static int w9968cf_read_sb(struct w9968cf_device* cam) |
| 1121 | { |
| 1122 | int v = 0; |
| 1123 | |
| 1124 | v = w9968cf_read_reg(cam, 0x01); |
| 1125 | udelay(W9968CF_I2C_BUS_DELAY); |
| 1126 | |
| 1127 | return v; |
| 1128 | } |
| 1129 | |
| 1130 | |
| 1131 | /*-------------------------------------------------------------------------- |
| 1132 | Upload quantization tables for the JPEG compression. |
| 1133 | This function is called by w9968cf_start_transfer(). |
| 1134 | Return 0 on success, a negative number otherwise. |
| 1135 | --------------------------------------------------------------------------*/ |
| 1136 | static int w9968cf_upload_quantizationtables(struct w9968cf_device* cam) |
| 1137 | { |
| 1138 | u16 a, b; |
| 1139 | int err = 0, i, j; |
| 1140 | |
| 1141 | err += w9968cf_write_reg(cam, 0x0010, 0x39); /* JPEG clock enable */ |
| 1142 | |
| 1143 | for (i = 0, j = 0; i < 32; i++, j += 2) { |
| 1144 | a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j+1]) << 8); |
| 1145 | b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j+1]) << 8); |
| 1146 | err += w9968cf_write_reg(cam, a, 0x40+i); |
| 1147 | err += w9968cf_write_reg(cam, b, 0x60+i); |
| 1148 | } |
| 1149 | err += w9968cf_write_reg(cam, 0x0012, 0x39); /* JPEG encoder enable */ |
| 1150 | |
| 1151 | return err; |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | |
| 1156 | /**************************************************************************** |
| 1157 | * Low-level I2C I/O functions. * |
| 1158 | * The adapter supports the following I2C transfer functions: * |
| 1159 | * i2c_adap_fastwrite_byte_data() (at 400 kHz bit frequency only) * |
| 1160 | * i2c_adap_read_byte_data() * |
| 1161 | * i2c_adap_read_byte() * |
| 1162 | ****************************************************************************/ |
| 1163 | |
| 1164 | static int w9968cf_smbus_start(struct w9968cf_device* cam) |
| 1165 | { |
| 1166 | int err = 0; |
| 1167 | |
| 1168 | err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */ |
| 1169 | err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */ |
| 1170 | |
| 1171 | return err; |
| 1172 | } |
| 1173 | |
| 1174 | |
| 1175 | static int w9968cf_smbus_stop(struct w9968cf_device* cam) |
| 1176 | { |
| 1177 | int err = 0; |
| 1178 | |
| 1179 | err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */ |
| 1180 | err += w9968cf_write_sb(cam, 0x0013); /* SDE=1, SDA=1, SCL=1 */ |
| 1181 | |
| 1182 | return err; |
| 1183 | } |
| 1184 | |
| 1185 | |
| 1186 | static int w9968cf_smbus_write_byte(struct w9968cf_device* cam, u8 v) |
| 1187 | { |
| 1188 | u8 bit; |
| 1189 | int err = 0, sda; |
| 1190 | |
| 1191 | for (bit = 0 ; bit < 8 ; bit++) { |
| 1192 | sda = (v & 0x80) ? 2 : 0; |
| 1193 | v <<= 1; |
| 1194 | /* SDE=1, SDA=sda, SCL=0 */ |
| 1195 | err += w9968cf_write_sb(cam, 0x10 | sda); |
| 1196 | /* SDE=1, SDA=sda, SCL=1 */ |
| 1197 | err += w9968cf_write_sb(cam, 0x11 | sda); |
| 1198 | /* SDE=1, SDA=sda, SCL=0 */ |
| 1199 | err += w9968cf_write_sb(cam, 0x10 | sda); |
| 1200 | } |
| 1201 | |
| 1202 | return err; |
| 1203 | } |
| 1204 | |
| 1205 | |
| 1206 | static int w9968cf_smbus_read_byte(struct w9968cf_device* cam, u8* v) |
| 1207 | { |
| 1208 | u8 bit; |
| 1209 | int err = 0; |
| 1210 | |
| 1211 | *v = 0; |
| 1212 | for (bit = 0 ; bit < 8 ; bit++) { |
| 1213 | *v <<= 1; |
| 1214 | err += w9968cf_write_sb(cam, 0x0013); |
| 1215 | *v |= (w9968cf_read_sb(cam) & 0x0008) ? 1 : 0; |
| 1216 | err += w9968cf_write_sb(cam, 0x0012); |
| 1217 | } |
| 1218 | |
| 1219 | return err; |
| 1220 | } |
| 1221 | |
| 1222 | |
| 1223 | static int w9968cf_smbus_write_ack(struct w9968cf_device* cam) |
| 1224 | { |
| 1225 | int err = 0; |
| 1226 | |
| 1227 | err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */ |
| 1228 | err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */ |
| 1229 | err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */ |
| 1230 | |
| 1231 | return err; |
| 1232 | } |
| 1233 | |
| 1234 | |
| 1235 | static int w9968cf_smbus_read_ack(struct w9968cf_device* cam) |
| 1236 | { |
| 1237 | int err = 0, sda; |
| 1238 | |
| 1239 | err += w9968cf_write_sb(cam, 0x0013); /* SDE=1, SDA=1, SCL=1 */ |
| 1240 | sda = (w9968cf_read_sb(cam) & 0x08) ? 1 : 0; /* sda = SDA */ |
| 1241 | err += w9968cf_write_sb(cam, 0x0012); /* SDE=1, SDA=1, SCL=0 */ |
| 1242 | if (sda < 0) |
| 1243 | err += sda; |
| 1244 | if (sda == 1) { |
| 1245 | DBG(6, "Couldn't receive the ACK") |
| 1246 | err += -1; |
| 1247 | } |
| 1248 | |
| 1249 | return err; |
| 1250 | } |
| 1251 | |
| 1252 | |
| 1253 | /* This seems to refresh the communication through the serial bus */ |
| 1254 | static int w9968cf_smbus_refresh_bus(struct w9968cf_device* cam) |
| 1255 | { |
| 1256 | int err = 0, j; |
| 1257 | |
| 1258 | for (j = 1; j <= 10; j++) { |
| 1259 | err = w9968cf_write_reg(cam, 0x0020, 0x01); |
| 1260 | err += w9968cf_write_reg(cam, 0x0000, 0x01); |
| 1261 | if (err) |
| 1262 | break; |
| 1263 | } |
| 1264 | |
| 1265 | return err; |
| 1266 | } |
| 1267 | |
| 1268 | |
| 1269 | /* SMBus protocol: S Addr Wr [A] Subaddr [A] Value [A] P */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1270 | static int |
| 1271 | w9968cf_i2c_adap_fastwrite_byte_data(struct w9968cf_device* cam, |
| 1272 | u16 address, u8 subaddress,u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | { |
| 1274 | u16* data = cam->data_buffer; |
| 1275 | int err = 0; |
| 1276 | |
| 1277 | err += w9968cf_smbus_refresh_bus(cam); |
| 1278 | |
| 1279 | /* Enable SBUS outputs */ |
| 1280 | err += w9968cf_write_sb(cam, 0x0020); |
| 1281 | |
| 1282 | data[0] = 0x082f | ((address & 0x80) ? 0x1500 : 0x0); |
| 1283 | data[0] |= (address & 0x40) ? 0x4000 : 0x0; |
| 1284 | data[1] = 0x2082 | ((address & 0x40) ? 0x0005 : 0x0); |
| 1285 | data[1] |= (address & 0x20) ? 0x0150 : 0x0; |
| 1286 | data[1] |= (address & 0x10) ? 0x5400 : 0x0; |
| 1287 | data[2] = 0x8208 | ((address & 0x08) ? 0x0015 : 0x0); |
| 1288 | data[2] |= (address & 0x04) ? 0x0540 : 0x0; |
| 1289 | data[2] |= (address & 0x02) ? 0x5000 : 0x0; |
| 1290 | data[3] = 0x1d20 | ((address & 0x02) ? 0x0001 : 0x0); |
| 1291 | data[3] |= (address & 0x01) ? 0x0054 : 0x0; |
| 1292 | |
| 1293 | err += w9968cf_write_fsb(cam, data); |
| 1294 | |
| 1295 | data[0] = 0x8208 | ((subaddress & 0x80) ? 0x0015 : 0x0); |
| 1296 | data[0] |= (subaddress & 0x40) ? 0x0540 : 0x0; |
| 1297 | data[0] |= (subaddress & 0x20) ? 0x5000 : 0x0; |
| 1298 | data[1] = 0x0820 | ((subaddress & 0x20) ? 0x0001 : 0x0); |
| 1299 | data[1] |= (subaddress & 0x10) ? 0x0054 : 0x0; |
| 1300 | data[1] |= (subaddress & 0x08) ? 0x1500 : 0x0; |
| 1301 | data[1] |= (subaddress & 0x04) ? 0x4000 : 0x0; |
| 1302 | data[2] = 0x2082 | ((subaddress & 0x04) ? 0x0005 : 0x0); |
| 1303 | data[2] |= (subaddress & 0x02) ? 0x0150 : 0x0; |
| 1304 | data[2] |= (subaddress & 0x01) ? 0x5400 : 0x0; |
| 1305 | data[3] = 0x001d; |
| 1306 | |
| 1307 | err += w9968cf_write_fsb(cam, data); |
| 1308 | |
| 1309 | data[0] = 0x8208 | ((value & 0x80) ? 0x0015 : 0x0); |
| 1310 | data[0] |= (value & 0x40) ? 0x0540 : 0x0; |
| 1311 | data[0] |= (value & 0x20) ? 0x5000 : 0x0; |
| 1312 | data[1] = 0x0820 | ((value & 0x20) ? 0x0001 : 0x0); |
| 1313 | data[1] |= (value & 0x10) ? 0x0054 : 0x0; |
| 1314 | data[1] |= (value & 0x08) ? 0x1500 : 0x0; |
| 1315 | data[1] |= (value & 0x04) ? 0x4000 : 0x0; |
| 1316 | data[2] = 0x2082 | ((value & 0x04) ? 0x0005 : 0x0); |
| 1317 | data[2] |= (value & 0x02) ? 0x0150 : 0x0; |
| 1318 | data[2] |= (value & 0x01) ? 0x5400 : 0x0; |
| 1319 | data[3] = 0xfe1d; |
| 1320 | |
| 1321 | err += w9968cf_write_fsb(cam, data); |
| 1322 | |
| 1323 | /* Disable SBUS outputs */ |
| 1324 | err += w9968cf_write_sb(cam, 0x0000); |
| 1325 | |
| 1326 | if (!err) |
| 1327 | DBG(5, "I2C write byte data done, addr.0x%04X, subaddr.0x%02X " |
| 1328 | "value 0x%02X", address, subaddress, value) |
| 1329 | else |
| 1330 | DBG(5, "I2C write byte data failed, addr.0x%04X, " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1331 | "subaddr.0x%02X, value 0x%02X", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | address, subaddress, value) |
| 1333 | |
| 1334 | return err; |
| 1335 | } |
| 1336 | |
| 1337 | |
| 1338 | /* SMBus protocol: S Addr Wr [A] Subaddr [A] P S Addr+1 Rd [A] [Value] NA P */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1339 | static int |
| 1340 | w9968cf_i2c_adap_read_byte_data(struct w9968cf_device* cam, |
| 1341 | u16 address, u8 subaddress, |
| 1342 | u8* value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | { |
| 1344 | int err = 0; |
| 1345 | |
| 1346 | /* Serial data enable */ |
| 1347 | err += w9968cf_write_sb(cam, 0x0013); /* don't change ! */ |
| 1348 | |
| 1349 | err += w9968cf_smbus_start(cam); |
| 1350 | err += w9968cf_smbus_write_byte(cam, address); |
| 1351 | err += w9968cf_smbus_read_ack(cam); |
| 1352 | err += w9968cf_smbus_write_byte(cam, subaddress); |
| 1353 | err += w9968cf_smbus_read_ack(cam); |
| 1354 | err += w9968cf_smbus_stop(cam); |
| 1355 | err += w9968cf_smbus_start(cam); |
| 1356 | err += w9968cf_smbus_write_byte(cam, address + 1); |
| 1357 | err += w9968cf_smbus_read_ack(cam); |
| 1358 | err += w9968cf_smbus_read_byte(cam, value); |
| 1359 | err += w9968cf_smbus_write_ack(cam); |
| 1360 | err += w9968cf_smbus_stop(cam); |
| 1361 | |
| 1362 | /* Serial data disable */ |
| 1363 | err += w9968cf_write_sb(cam, 0x0000); |
| 1364 | |
| 1365 | if (!err) |
| 1366 | DBG(5, "I2C read byte data done, addr.0x%04X, " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1367 | "subaddr.0x%02X, value 0x%02X", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | address, subaddress, *value) |
| 1369 | else |
| 1370 | DBG(5, "I2C read byte data failed, addr.0x%04X, " |
| 1371 | "subaddr.0x%02X, wrong value 0x%02X", |
| 1372 | address, subaddress, *value) |
| 1373 | |
| 1374 | return err; |
| 1375 | } |
| 1376 | |
| 1377 | |
| 1378 | /* SMBus protocol: S Addr+1 Rd [A] [Value] NA P */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1379 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | w9968cf_i2c_adap_read_byte(struct w9968cf_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1381 | u16 address, u8* value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | { |
| 1383 | int err = 0; |
| 1384 | |
| 1385 | /* Serial data enable */ |
| 1386 | err += w9968cf_write_sb(cam, 0x0013); |
| 1387 | |
| 1388 | err += w9968cf_smbus_start(cam); |
| 1389 | err += w9968cf_smbus_write_byte(cam, address + 1); |
| 1390 | err += w9968cf_smbus_read_ack(cam); |
| 1391 | err += w9968cf_smbus_read_byte(cam, value); |
| 1392 | err += w9968cf_smbus_write_ack(cam); |
| 1393 | err += w9968cf_smbus_stop(cam); |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | /* Serial data disable */ |
| 1396 | err += w9968cf_write_sb(cam, 0x0000); |
| 1397 | |
| 1398 | if (!err) |
| 1399 | DBG(5, "I2C read byte done, addr.0x%04X, " |
| 1400 | "value 0x%02X", address, *value) |
| 1401 | else |
| 1402 | DBG(5, "I2C read byte failed, addr.0x%04X, " |
| 1403 | "wrong value 0x%02X", address, *value) |
| 1404 | |
| 1405 | return err; |
| 1406 | } |
| 1407 | |
| 1408 | |
| 1409 | /* SMBus protocol: S Addr Wr [A] Value [A] P */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1410 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | w9968cf_i2c_adap_write_byte(struct w9968cf_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1412 | u16 address, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | { |
| 1414 | DBG(4, "i2c_write_byte() is an unsupported transfer mode") |
| 1415 | return -EINVAL; |
| 1416 | } |
| 1417 | |
| 1418 | |
| 1419 | |
| 1420 | /**************************************************************************** |
| 1421 | * I2C interface to kernel * |
| 1422 | ****************************************************************************/ |
| 1423 | |
| 1424 | static int |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1425 | w9968cf_i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, |
| 1426 | unsigned short flags, char read_write, u8 command, |
| 1427 | int size, union i2c_smbus_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | { |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 1429 | struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter); |
| 1430 | struct w9968cf_device *cam = to_cam(v4l2_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | u8 i; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1432 | int err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | if (size == I2C_SMBUS_BYTE) { |
| 1435 | /* Why addr <<= 1? See OVXXX0_SID defines in ovcamchip.h */ |
| 1436 | addr <<= 1; |
| 1437 | |
| 1438 | if (read_write == I2C_SMBUS_WRITE) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1439 | err = w9968cf_i2c_adap_write_byte(cam, addr, command); |
| 1440 | else if (read_write == I2C_SMBUS_READ) |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 1441 | for (i = 1; i <= W9968CF_I2C_RW_RETRIES; i++) { |
| 1442 | err = w9968cf_i2c_adap_read_byte(cam, addr, |
| 1443 | &data->byte); |
| 1444 | if (err) { |
| 1445 | if (w9968cf_smbus_refresh_bus(cam)) { |
| 1446 | err = -EIO; |
| 1447 | break; |
| 1448 | } |
| 1449 | } else |
| 1450 | break; |
| 1451 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | } else if (size == I2C_SMBUS_BYTE_DATA) { |
| 1453 | addr <<= 1; |
| 1454 | |
| 1455 | if (read_write == I2C_SMBUS_WRITE) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1456 | err = w9968cf_i2c_adap_fastwrite_byte_data(cam, addr, |
| 1457 | command, data->byte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | else if (read_write == I2C_SMBUS_READ) { |
| 1459 | for (i = 1; i <= W9968CF_I2C_RW_RETRIES; i++) { |
| 1460 | err = w9968cf_i2c_adap_read_byte_data(cam,addr, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1461 | command, &data->byte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | if (err) { |
| 1463 | if (w9968cf_smbus_refresh_bus(cam)) { |
| 1464 | err = -EIO; |
| 1465 | break; |
| 1466 | } |
| 1467 | } else |
| 1468 | break; |
| 1469 | } |
| 1470 | |
| 1471 | } else |
| 1472 | return -EINVAL; |
| 1473 | |
| 1474 | } else { |
| 1475 | DBG(4, "Unsupported I2C transfer mode (%d)", size) |
| 1476 | return -EINVAL; |
| 1477 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | return err; |
| 1479 | } |
| 1480 | |
| 1481 | |
| 1482 | static u32 w9968cf_i2c_func(struct i2c_adapter* adap) |
| 1483 | { |
| 1484 | return I2C_FUNC_SMBUS_READ_BYTE | |
| 1485 | I2C_FUNC_SMBUS_READ_BYTE_DATA | |
| 1486 | I2C_FUNC_SMBUS_WRITE_BYTE_DATA; |
| 1487 | } |
| 1488 | |
| 1489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | static int w9968cf_i2c_init(struct w9968cf_device* cam) |
| 1491 | { |
| 1492 | int err = 0; |
| 1493 | |
| 1494 | static struct i2c_algorithm algo = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | .smbus_xfer = w9968cf_i2c_smbus_xfer, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | .functionality = w9968cf_i2c_func, |
| 1497 | }; |
| 1498 | |
| 1499 | static struct i2c_adapter adap = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | .owner = THIS_MODULE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | .algo = &algo, |
| 1502 | }; |
| 1503 | |
| 1504 | memcpy(&cam->i2c_adapter, &adap, sizeof(struct i2c_adapter)); |
| 1505 | strcpy(cam->i2c_adapter.name, "w9968cf"); |
Jean Delvare | 12a917f | 2007-02-13 22:09:03 +0100 | [diff] [blame] | 1506 | cam->i2c_adapter.dev.parent = &cam->usbdev->dev; |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 1507 | i2c_set_adapdata(&cam->i2c_adapter, &cam->v4l2_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | |
| 1509 | DBG(6, "Registering I2C adapter with kernel...") |
| 1510 | |
| 1511 | err = i2c_add_adapter(&cam->i2c_adapter); |
| 1512 | if (err) |
| 1513 | DBG(1, "Failed to register the I2C adapter") |
| 1514 | else |
| 1515 | DBG(5, "I2C adapter registered") |
| 1516 | |
| 1517 | return err; |
| 1518 | } |
| 1519 | |
| 1520 | |
| 1521 | |
| 1522 | /**************************************************************************** |
| 1523 | * Helper functions * |
| 1524 | ****************************************************************************/ |
| 1525 | |
| 1526 | /*-------------------------------------------------------------------------- |
| 1527 | Turn on the LED on some webcams. A beep should be heard too. |
| 1528 | Return 0 on success, a negative number otherwise. |
| 1529 | --------------------------------------------------------------------------*/ |
| 1530 | static int w9968cf_turn_on_led(struct w9968cf_device* cam) |
| 1531 | { |
| 1532 | int err = 0; |
| 1533 | |
| 1534 | err += w9968cf_write_reg(cam, 0xff00, 0x00); /* power-down */ |
| 1535 | err += w9968cf_write_reg(cam, 0xbf17, 0x00); /* reset everything */ |
| 1536 | err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* normal operation */ |
| 1537 | err += w9968cf_write_reg(cam, 0x0010, 0x01); /* serial bus, SDS high */ |
| 1538 | err += w9968cf_write_reg(cam, 0x0000, 0x01); /* serial bus, SDS low */ |
| 1539 | err += w9968cf_write_reg(cam, 0x0010, 0x01); /* ..high 'beep-beep' */ |
| 1540 | |
| 1541 | if (err) |
| 1542 | DBG(2, "Couldn't turn on the LED") |
| 1543 | |
| 1544 | DBG(5, "LED turned on") |
| 1545 | |
| 1546 | return err; |
| 1547 | } |
| 1548 | |
| 1549 | |
| 1550 | /*-------------------------------------------------------------------------- |
| 1551 | Write some registers for the device initialization. |
| 1552 | This function is called once on open(). |
| 1553 | Return 0 on success, a negative number otherwise. |
| 1554 | --------------------------------------------------------------------------*/ |
| 1555 | static int w9968cf_init_chip(struct w9968cf_device* cam) |
| 1556 | { |
| 1557 | unsigned long hw_bufsize = cam->maxwidth*cam->maxheight*2, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1558 | y0 = 0x0000, |
| 1559 | u0 = y0 + hw_bufsize/2, |
| 1560 | v0 = u0 + hw_bufsize/4, |
| 1561 | y1 = v0 + hw_bufsize/4, |
| 1562 | u1 = y1 + hw_bufsize/2, |
| 1563 | v1 = u1 + hw_bufsize/4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | int err = 0; |
| 1565 | |
| 1566 | err += w9968cf_write_reg(cam, 0xff00, 0x00); /* power off */ |
| 1567 | err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* power on */ |
| 1568 | |
| 1569 | err += w9968cf_write_reg(cam, 0x405d, 0x03); /* DRAM timings */ |
| 1570 | err += w9968cf_write_reg(cam, 0x0030, 0x04); /* SDRAM timings */ |
| 1571 | |
| 1572 | err += w9968cf_write_reg(cam, y0 & 0xffff, 0x20); /* Y buf.0, low */ |
| 1573 | err += w9968cf_write_reg(cam, y0 >> 16, 0x21); /* Y buf.0, high */ |
| 1574 | err += w9968cf_write_reg(cam, u0 & 0xffff, 0x24); /* U buf.0, low */ |
| 1575 | err += w9968cf_write_reg(cam, u0 >> 16, 0x25); /* U buf.0, high */ |
| 1576 | err += w9968cf_write_reg(cam, v0 & 0xffff, 0x28); /* V buf.0, low */ |
| 1577 | err += w9968cf_write_reg(cam, v0 >> 16, 0x29); /* V buf.0, high */ |
| 1578 | |
| 1579 | err += w9968cf_write_reg(cam, y1 & 0xffff, 0x22); /* Y buf.1, low */ |
| 1580 | err += w9968cf_write_reg(cam, y1 >> 16, 0x23); /* Y buf.1, high */ |
| 1581 | err += w9968cf_write_reg(cam, u1 & 0xffff, 0x26); /* U buf.1, low */ |
| 1582 | err += w9968cf_write_reg(cam, u1 >> 16, 0x27); /* U buf.1, high */ |
| 1583 | err += w9968cf_write_reg(cam, v1 & 0xffff, 0x2a); /* V buf.1, low */ |
| 1584 | err += w9968cf_write_reg(cam, v1 >> 16, 0x2b); /* V buf.1, high */ |
| 1585 | |
| 1586 | err += w9968cf_write_reg(cam, y1 & 0xffff, 0x32); /* JPEG buf 0 low */ |
| 1587 | err += w9968cf_write_reg(cam, y1 >> 16, 0x33); /* JPEG buf 0 high */ |
| 1588 | |
| 1589 | err += w9968cf_write_reg(cam, y1 & 0xffff, 0x34); /* JPEG buf 1 low */ |
| 1590 | err += w9968cf_write_reg(cam, y1 >> 16, 0x35); /* JPEG bug 1 high */ |
| 1591 | |
| 1592 | err += w9968cf_write_reg(cam, 0x0000, 0x36);/* JPEG restart interval */ |
| 1593 | err += w9968cf_write_reg(cam, 0x0804, 0x37);/*JPEG VLE FIFO threshold*/ |
| 1594 | err += w9968cf_write_reg(cam, 0x0000, 0x38);/* disable hw up-scaling */ |
| 1595 | err += w9968cf_write_reg(cam, 0x0000, 0x3f); /* JPEG/MCTL test data */ |
| 1596 | |
| 1597 | err += w9968cf_set_picture(cam, cam->picture); /* this before */ |
| 1598 | err += w9968cf_set_window(cam, cam->window); |
| 1599 | |
| 1600 | if (err) |
| 1601 | DBG(1, "Chip initialization failed") |
| 1602 | else |
| 1603 | DBG(5, "Chip successfully initialized") |
| 1604 | |
| 1605 | return err; |
| 1606 | } |
| 1607 | |
| 1608 | |
| 1609 | /*-------------------------------------------------------------------------- |
| 1610 | Return non-zero if the palette is supported, 0 otherwise. |
| 1611 | --------------------------------------------------------------------------*/ |
| 1612 | static inline u16 w9968cf_valid_palette(u16 palette) |
| 1613 | { |
| 1614 | u8 i = 0; |
| 1615 | while (w9968cf_formatlist[i].palette != 0) { |
| 1616 | if (palette == w9968cf_formatlist[i].palette) |
| 1617 | return palette; |
| 1618 | i++; |
| 1619 | } |
| 1620 | return 0; |
| 1621 | } |
| 1622 | |
| 1623 | |
| 1624 | /*-------------------------------------------------------------------------- |
| 1625 | Return the depth corresponding to the given palette. |
| 1626 | Palette _must_ be supported ! |
| 1627 | --------------------------------------------------------------------------*/ |
| 1628 | static inline u16 w9968cf_valid_depth(u16 palette) |
| 1629 | { |
| 1630 | u8 i=0; |
| 1631 | while (w9968cf_formatlist[i].palette != palette) |
| 1632 | i++; |
| 1633 | |
| 1634 | return w9968cf_formatlist[i].depth; |
| 1635 | } |
| 1636 | |
| 1637 | |
| 1638 | /*-------------------------------------------------------------------------- |
| 1639 | Return non-zero if the format requires decompression, 0 otherwise. |
| 1640 | --------------------------------------------------------------------------*/ |
| 1641 | static inline u8 w9968cf_need_decompression(u16 palette) |
| 1642 | { |
| 1643 | u8 i = 0; |
| 1644 | while (w9968cf_formatlist[i].palette != 0) { |
| 1645 | if (palette == w9968cf_formatlist[i].palette) |
| 1646 | return w9968cf_formatlist[i].compression; |
| 1647 | i++; |
| 1648 | } |
| 1649 | return 0; |
| 1650 | } |
| 1651 | |
| 1652 | |
| 1653 | /*-------------------------------------------------------------------------- |
| 1654 | Change the picture settings of the camera. |
| 1655 | Return 0 on success, a negative number otherwise. |
| 1656 | --------------------------------------------------------------------------*/ |
| 1657 | static int |
| 1658 | w9968cf_set_picture(struct w9968cf_device* cam, struct video_picture pict) |
| 1659 | { |
| 1660 | u16 fmt, hw_depth, hw_palette, reg_v = 0x0000; |
| 1661 | int err = 0; |
| 1662 | |
| 1663 | /* Make sure we are using a valid depth */ |
| 1664 | pict.depth = w9968cf_valid_depth(pict.palette); |
| 1665 | |
| 1666 | fmt = pict.palette; |
| 1667 | |
| 1668 | hw_depth = pict.depth; /* depth used by the winbond chip */ |
| 1669 | hw_palette = pict.palette; /* palette used by the winbond chip */ |
| 1670 | |
| 1671 | /* VS & HS polarities */ |
| 1672 | reg_v = (cam->vs_polarity << 12) | (cam->hs_polarity << 11); |
| 1673 | |
| 1674 | switch (fmt) |
| 1675 | { |
| 1676 | case VIDEO_PALETTE_UYVY: |
| 1677 | reg_v |= 0x0000; |
| 1678 | cam->vpp_flag = VPP_NONE; |
| 1679 | break; |
| 1680 | case VIDEO_PALETTE_YUV422P: |
| 1681 | reg_v |= 0x0002; |
| 1682 | cam->vpp_flag = VPP_DECOMPRESSION; |
| 1683 | break; |
| 1684 | case VIDEO_PALETTE_YUV420: |
| 1685 | case VIDEO_PALETTE_YUV420P: |
| 1686 | reg_v |= 0x0003; |
| 1687 | cam->vpp_flag = VPP_DECOMPRESSION; |
| 1688 | break; |
| 1689 | case VIDEO_PALETTE_YUYV: |
| 1690 | case VIDEO_PALETTE_YUV422: |
| 1691 | reg_v |= 0x0000; |
| 1692 | cam->vpp_flag = VPP_SWAP_YUV_BYTES; |
| 1693 | hw_palette = VIDEO_PALETTE_UYVY; |
| 1694 | break; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1695 | /* Original video is used instead of RGBX palettes. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | Software conversion later. */ |
| 1697 | case VIDEO_PALETTE_GREY: |
| 1698 | case VIDEO_PALETTE_RGB555: |
| 1699 | case VIDEO_PALETTE_RGB565: |
| 1700 | case VIDEO_PALETTE_RGB24: |
| 1701 | case VIDEO_PALETTE_RGB32: |
| 1702 | reg_v |= 0x0000; /* UYVY 16 bit is used */ |
| 1703 | hw_depth = 16; |
| 1704 | hw_palette = VIDEO_PALETTE_UYVY; |
| 1705 | cam->vpp_flag = VPP_UYVY_TO_RGBX; |
| 1706 | break; |
| 1707 | } |
| 1708 | |
| 1709 | /* NOTE: due to memory issues, it is better to disable the hardware |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1710 | double buffering during compression */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | if (cam->double_buffer && !(cam->vpp_flag & VPP_DECOMPRESSION)) |
| 1712 | reg_v |= 0x0080; |
| 1713 | |
| 1714 | if (cam->clamping) |
| 1715 | reg_v |= 0x0020; |
| 1716 | |
| 1717 | if (cam->filter_type == 1) |
| 1718 | reg_v |= 0x0008; |
| 1719 | else if (cam->filter_type == 2) |
| 1720 | reg_v |= 0x000c; |
| 1721 | |
| 1722 | if ((err = w9968cf_write_reg(cam, reg_v, 0x16))) |
| 1723 | goto error; |
| 1724 | |
| 1725 | if ((err = w9968cf_sensor_update_picture(cam, pict))) |
| 1726 | goto error; |
| 1727 | |
| 1728 | /* If all went well, update the device data structure */ |
| 1729 | memcpy(&cam->picture, &pict, sizeof(pict)); |
| 1730 | cam->hw_depth = hw_depth; |
| 1731 | cam->hw_palette = hw_palette; |
| 1732 | |
| 1733 | /* Settings changed, so we clear the frame buffers */ |
| 1734 | memset(cam->frame[0].buffer, 0, cam->nbuffers*cam->frame[0].size); |
| 1735 | |
| 1736 | DBG(4, "Palette is %s, depth is %u bpp", |
| 1737 | symbolic(v4l1_plist, pict.palette), pict.depth) |
| 1738 | |
| 1739 | return 0; |
| 1740 | |
| 1741 | error: |
| 1742 | DBG(1, "Failed to change picture settings") |
| 1743 | return err; |
| 1744 | } |
| 1745 | |
| 1746 | |
| 1747 | /*-------------------------------------------------------------------------- |
| 1748 | Change the capture area size of the camera. |
| 1749 | This function _must_ be called _after_ w9968cf_set_picture(). |
| 1750 | Return 0 on success, a negative number otherwise. |
| 1751 | --------------------------------------------------------------------------*/ |
| 1752 | static int |
| 1753 | w9968cf_set_window(struct w9968cf_device* cam, struct video_window win) |
| 1754 | { |
| 1755 | u16 x, y, w, h, scx, scy, cw, ch, ax, ay; |
| 1756 | unsigned long fw, fh; |
| 1757 | struct ovcamchip_window s_win; |
| 1758 | int err = 0; |
| 1759 | |
| 1760 | /* Work around to avoid FP arithmetics */ |
Ralf Baechle | bee8a44 | 2006-12-11 11:14:54 -0300 | [diff] [blame] | 1761 | #define SC(x) ((x) << 10) |
| 1762 | #define UNSC(x) ((x) >> 10) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | |
| 1764 | /* Make sure we are using a supported resolution */ |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 1765 | if ((err = w9968cf_adjust_window_size(cam, &win.width, &win.height))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | goto error; |
| 1767 | |
| 1768 | /* Scaling factors */ |
Ralf Baechle | bee8a44 | 2006-12-11 11:14:54 -0300 | [diff] [blame] | 1769 | fw = SC(win.width) / cam->maxwidth; |
| 1770 | fh = SC(win.height) / cam->maxheight; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | |
| 1772 | /* Set up the width and height values used by the chip */ |
| 1773 | if ((win.width > cam->maxwidth) || (win.height > cam->maxheight)) { |
| 1774 | cam->vpp_flag |= VPP_UPSCALE; |
| 1775 | /* Calculate largest w,h mantaining the same w/h ratio */ |
Ralf Baechle | bee8a44 | 2006-12-11 11:14:54 -0300 | [diff] [blame] | 1776 | w = (fw >= fh) ? cam->maxwidth : SC(win.width)/fh; |
| 1777 | h = (fw >= fh) ? SC(win.height)/fw : cam->maxheight; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | if (w < cam->minwidth) /* just in case */ |
| 1779 | w = cam->minwidth; |
| 1780 | if (h < cam->minheight) /* just in case */ |
| 1781 | h = cam->minheight; |
| 1782 | } else { |
| 1783 | cam->vpp_flag &= ~VPP_UPSCALE; |
| 1784 | w = win.width; |
| 1785 | h = win.height; |
| 1786 | } |
| 1787 | |
| 1788 | /* x,y offsets of the cropped area */ |
| 1789 | scx = cam->start_cropx; |
| 1790 | scy = cam->start_cropy; |
| 1791 | |
| 1792 | /* Calculate cropped area manteining the right w/h ratio */ |
| 1793 | if (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) { |
Ralf Baechle | bee8a44 | 2006-12-11 11:14:54 -0300 | [diff] [blame] | 1794 | cw = (fw >= fh) ? cam->maxwidth : SC(win.width)/fh; |
| 1795 | ch = (fw >= fh) ? SC(win.height)/fw : cam->maxheight; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | } else { |
| 1797 | cw = w; |
| 1798 | ch = h; |
| 1799 | } |
| 1800 | |
| 1801 | /* Setup the window of the sensor */ |
| 1802 | s_win.format = VIDEO_PALETTE_UYVY; |
| 1803 | s_win.width = cam->maxwidth; |
| 1804 | s_win.height = cam->maxheight; |
| 1805 | s_win.quarter = 0; /* full progressive video */ |
| 1806 | |
| 1807 | /* Center it */ |
| 1808 | s_win.x = (s_win.width - cw) / 2; |
| 1809 | s_win.y = (s_win.height - ch) / 2; |
| 1810 | |
| 1811 | /* Clock divisor */ |
| 1812 | if (cam->clockdiv >= 0) |
| 1813 | s_win.clockdiv = cam->clockdiv; /* manual override */ |
| 1814 | else |
| 1815 | switch (cam->sensor) { |
| 1816 | case CC_OV6620: |
| 1817 | s_win.clockdiv = 0; |
| 1818 | break; |
| 1819 | case CC_OV6630: |
| 1820 | s_win.clockdiv = 0; |
| 1821 | break; |
| 1822 | case CC_OV76BE: |
| 1823 | case CC_OV7610: |
| 1824 | case CC_OV7620: |
| 1825 | s_win.clockdiv = 0; |
| 1826 | break; |
| 1827 | default: |
| 1828 | s_win.clockdiv = W9968CF_DEF_CLOCKDIVISOR; |
| 1829 | } |
| 1830 | |
| 1831 | /* We have to scale win.x and win.y offsets */ |
| 1832 | if ( (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) |
| 1833 | || (cam->vpp_flag & VPP_UPSCALE) ) { |
Ralf Baechle | bee8a44 | 2006-12-11 11:14:54 -0300 | [diff] [blame] | 1834 | ax = SC(win.x)/fw; |
| 1835 | ay = SC(win.y)/fh; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | } else { |
| 1837 | ax = win.x; |
| 1838 | ay = win.y; |
| 1839 | } |
| 1840 | |
| 1841 | if ((ax + cw) > cam->maxwidth) |
| 1842 | ax = cam->maxwidth - cw; |
| 1843 | |
| 1844 | if ((ay + ch) > cam->maxheight) |
| 1845 | ay = cam->maxheight - ch; |
| 1846 | |
| 1847 | /* Adjust win.x, win.y */ |
| 1848 | if ( (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) |
| 1849 | || (cam->vpp_flag & VPP_UPSCALE) ) { |
Ralf Baechle | bee8a44 | 2006-12-11 11:14:54 -0300 | [diff] [blame] | 1850 | win.x = UNSC(ax*fw); |
| 1851 | win.y = UNSC(ay*fh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | } else { |
| 1853 | win.x = ax; |
| 1854 | win.y = ay; |
| 1855 | } |
| 1856 | |
| 1857 | /* Offsets used by the chip */ |
| 1858 | x = ax + s_win.x; |
| 1859 | y = ay + s_win.y; |
| 1860 | |
| 1861 | /* Go ! */ |
| 1862 | if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_S_MODE, &s_win))) |
| 1863 | goto error; |
| 1864 | |
| 1865 | err += w9968cf_write_reg(cam, scx + x, 0x10); |
| 1866 | err += w9968cf_write_reg(cam, scy + y, 0x11); |
| 1867 | err += w9968cf_write_reg(cam, scx + x + cw, 0x12); |
| 1868 | err += w9968cf_write_reg(cam, scy + y + ch, 0x13); |
| 1869 | err += w9968cf_write_reg(cam, w, 0x14); |
| 1870 | err += w9968cf_write_reg(cam, h, 0x15); |
| 1871 | |
| 1872 | /* JPEG width & height */ |
| 1873 | err += w9968cf_write_reg(cam, w, 0x30); |
| 1874 | err += w9968cf_write_reg(cam, h, 0x31); |
| 1875 | |
| 1876 | /* Y & UV frame buffer strides (in WORD) */ |
| 1877 | if (cam->vpp_flag & VPP_DECOMPRESSION) { |
| 1878 | err += w9968cf_write_reg(cam, w/2, 0x2c); |
| 1879 | err += w9968cf_write_reg(cam, w/4, 0x2d); |
| 1880 | } else |
| 1881 | err += w9968cf_write_reg(cam, w, 0x2c); |
| 1882 | |
| 1883 | if (err) |
| 1884 | goto error; |
| 1885 | |
| 1886 | /* If all went well, update the device data structure */ |
| 1887 | memcpy(&cam->window, &win, sizeof(win)); |
| 1888 | cam->hw_width = w; |
| 1889 | cam->hw_height = h; |
| 1890 | |
| 1891 | /* Settings changed, so we clear the frame buffers */ |
| 1892 | memset(cam->frame[0].buffer, 0, cam->nbuffers*cam->frame[0].size); |
| 1893 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1894 | DBG(4, "The capture area is %dx%d, Offset (x,y)=(%u,%u)", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | win.width, win.height, win.x, win.y) |
| 1896 | |
| 1897 | PDBGG("x=%u ,y=%u, w=%u, h=%u, ax=%u, ay=%u, s_win.x=%u, s_win.y=%u, " |
| 1898 | "cw=%u, ch=%u, win.x=%u, win.y=%u, win.width=%u, win.height=%u", |
| 1899 | x, y, w, h, ax, ay, s_win.x, s_win.y, cw, ch, win.x, win.y, |
| 1900 | win.width, win.height) |
| 1901 | |
| 1902 | return 0; |
| 1903 | |
| 1904 | error: |
| 1905 | DBG(1, "Failed to change the capture area size") |
| 1906 | return err; |
| 1907 | } |
| 1908 | |
| 1909 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1910 | /*-------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | Adjust the asked values for window width and height. |
| 1912 | Return 0 on success, -1 otherwise. |
| 1913 | --------------------------------------------------------------------------*/ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1914 | static int |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 1915 | w9968cf_adjust_window_size(struct w9968cf_device *cam, u32 *width, u32 *height) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | { |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 1917 | unsigned int maxw, maxh, align; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | |
| 1919 | maxw = cam->upscaling && !(cam->vpp_flag & VPP_DECOMPRESSION) && |
| 1920 | w9968cf_vpp ? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1921 | : cam->maxwidth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | maxh = cam->upscaling && !(cam->vpp_flag & VPP_DECOMPRESSION) && |
| 1923 | w9968cf_vpp ? max((u16)W9968CF_MAX_HEIGHT, cam->maxheight) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1924 | : cam->maxheight; |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 1925 | align = (cam->vpp_flag & VPP_DECOMPRESSION) ? 4 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 1927 | v4l_bound_align_image(width, cam->minwidth, maxw, align, |
| 1928 | height, cam->minheight, maxh, align, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | |
| 1930 | PDBGG("Window size adjusted w=%u, h=%u ", *width, *height) |
| 1931 | |
| 1932 | return 0; |
| 1933 | } |
| 1934 | |
| 1935 | |
| 1936 | /*-------------------------------------------------------------------------- |
| 1937 | Initialize the FIFO list of requested frames. |
| 1938 | --------------------------------------------------------------------------*/ |
| 1939 | static void w9968cf_init_framelist(struct w9968cf_device* cam) |
| 1940 | { |
| 1941 | u8 i; |
| 1942 | |
| 1943 | for (i = 0; i < cam->nbuffers; i++) { |
| 1944 | cam->requested_frame[i] = NULL; |
| 1945 | cam->frame[i].queued = 0; |
| 1946 | cam->frame[i].status = F_UNUSED; |
| 1947 | } |
| 1948 | } |
| 1949 | |
| 1950 | |
| 1951 | /*-------------------------------------------------------------------------- |
| 1952 | Add a frame in the FIFO list of requested frames. |
| 1953 | This function is called in process context. |
| 1954 | --------------------------------------------------------------------------*/ |
| 1955 | static void w9968cf_push_frame(struct w9968cf_device* cam, u8 f_num) |
| 1956 | { |
| 1957 | u8 f; |
| 1958 | unsigned long lock_flags; |
| 1959 | |
| 1960 | spin_lock_irqsave(&cam->flist_lock, lock_flags); |
| 1961 | |
| 1962 | for (f=0; cam->requested_frame[f] != NULL; f++); |
| 1963 | cam->requested_frame[f] = &cam->frame[f_num]; |
| 1964 | cam->frame[f_num].queued = 1; |
| 1965 | cam->frame[f_num].status = F_UNUSED; /* clear the status */ |
| 1966 | |
| 1967 | spin_unlock_irqrestore(&cam->flist_lock, lock_flags); |
| 1968 | |
| 1969 | DBG(6, "Frame #%u pushed into the FIFO list. Position %u", f_num, f) |
| 1970 | } |
| 1971 | |
| 1972 | |
| 1973 | /*-------------------------------------------------------------------------- |
| 1974 | Read, store and remove the first pointer in the FIFO list of requested |
| 1975 | frames. This function is called in interrupt context. |
| 1976 | --------------------------------------------------------------------------*/ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1977 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | w9968cf_pop_frame(struct w9968cf_device* cam, struct w9968cf_frame_t** framep) |
| 1979 | { |
| 1980 | u8 i; |
| 1981 | |
| 1982 | spin_lock(&cam->flist_lock); |
| 1983 | |
| 1984 | *framep = cam->requested_frame[0]; |
| 1985 | |
| 1986 | /* Shift the list of pointers */ |
| 1987 | for (i = 0; i < cam->nbuffers-1; i++) |
| 1988 | cam->requested_frame[i] = cam->requested_frame[i+1]; |
| 1989 | cam->requested_frame[i] = NULL; |
| 1990 | |
| 1991 | spin_unlock(&cam->flist_lock); |
| 1992 | |
| 1993 | DBG(6,"Popped frame #%d from the list", (*framep)->number) |
| 1994 | } |
| 1995 | |
| 1996 | |
| 1997 | /*-------------------------------------------------------------------------- |
| 1998 | High-level video post-processing routine on grabbed frames. |
| 1999 | Return 0 on success, a negative number otherwise. |
| 2000 | --------------------------------------------------------------------------*/ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2001 | static int |
| 2002 | w9968cf_postprocess_frame(struct w9968cf_device* cam, |
| 2003 | struct w9968cf_frame_t* fr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | { |
| 2005 | void *pIn = fr->buffer, *pOut = cam->frame_vpp.buffer, *tmp; |
| 2006 | u16 w = cam->window.width, |
| 2007 | h = cam->window.height, |
| 2008 | d = cam->picture.depth, |
| 2009 | fmt = cam->picture.palette, |
| 2010 | rgb = cam->force_rgb, |
| 2011 | hw_w = cam->hw_width, |
| 2012 | hw_h = cam->hw_height, |
| 2013 | hw_d = cam->hw_depth; |
| 2014 | int err = 0; |
| 2015 | |
| 2016 | #define _PSWAP(pIn, pOut) {tmp = (pIn); (pIn) = (pOut); (pOut) = tmp;} |
| 2017 | |
| 2018 | if (cam->vpp_flag & VPP_DECOMPRESSION) { |
| 2019 | memcpy(pOut, pIn, fr->length); |
| 2020 | _PSWAP(pIn, pOut) |
| 2021 | err = w9968cf_vpp->decode(pIn, fr->length, hw_w, hw_h, pOut); |
| 2022 | PDBGG("Compressed frame length: %lu",(unsigned long)fr->length) |
| 2023 | fr->length = (hw_w*hw_h*hw_d)/8; |
| 2024 | _PSWAP(pIn, pOut) |
| 2025 | if (err) { |
| 2026 | DBG(4, "An error occurred while decoding the frame: " |
| 2027 | "%s", symbolic(decoder_errlist, err)) |
| 2028 | return err; |
| 2029 | } else |
| 2030 | DBG(6, "Frame decoded") |
| 2031 | } |
| 2032 | |
| 2033 | if (cam->vpp_flag & VPP_SWAP_YUV_BYTES) { |
| 2034 | w9968cf_vpp->swap_yuvbytes(pIn, fr->length); |
| 2035 | DBG(6, "Original UYVY component ordering changed") |
| 2036 | } |
| 2037 | |
| 2038 | if (cam->vpp_flag & VPP_UPSCALE) { |
| 2039 | w9968cf_vpp->scale_up(pIn, pOut, hw_w, hw_h, hw_d, w, h); |
| 2040 | fr->length = (w*h*hw_d)/8; |
| 2041 | _PSWAP(pIn, pOut) |
| 2042 | DBG(6, "Vertical up-scaling done: %u,%u,%ubpp->%u,%u", |
| 2043 | hw_w, hw_h, hw_d, w, h) |
| 2044 | } |
| 2045 | |
| 2046 | if (cam->vpp_flag & VPP_UYVY_TO_RGBX) { |
| 2047 | w9968cf_vpp->uyvy_to_rgbx(pIn, fr->length, pOut, fmt, rgb); |
| 2048 | fr->length = (w*h*d)/8; |
| 2049 | _PSWAP(pIn, pOut) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2050 | DBG(6, "UYVY-16bit to %s conversion done", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | symbolic(v4l1_plist, fmt)) |
| 2052 | } |
| 2053 | |
| 2054 | if (pOut == fr->buffer) |
| 2055 | memcpy(fr->buffer, cam->frame_vpp.buffer, fr->length); |
| 2056 | |
| 2057 | return 0; |
| 2058 | } |
| 2059 | |
| 2060 | |
| 2061 | |
| 2062 | /**************************************************************************** |
| 2063 | * Image sensor control routines * |
| 2064 | ****************************************************************************/ |
| 2065 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2066 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | w9968cf_sensor_set_control(struct w9968cf_device* cam, int cid, int val) |
| 2068 | { |
| 2069 | struct ovcamchip_control ctl; |
| 2070 | int err; |
| 2071 | |
| 2072 | ctl.id = cid; |
| 2073 | ctl.value = val; |
| 2074 | |
| 2075 | err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_S_CTRL, &ctl); |
| 2076 | |
| 2077 | return err; |
| 2078 | } |
| 2079 | |
| 2080 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2081 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | w9968cf_sensor_get_control(struct w9968cf_device* cam, int cid, int* val) |
| 2083 | { |
| 2084 | struct ovcamchip_control ctl; |
| 2085 | int err; |
| 2086 | |
| 2087 | ctl.id = cid; |
| 2088 | |
| 2089 | err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_G_CTRL, &ctl); |
| 2090 | if (!err) |
| 2091 | *val = ctl.value; |
| 2092 | |
| 2093 | return err; |
| 2094 | } |
| 2095 | |
| 2096 | |
| 2097 | static int |
| 2098 | w9968cf_sensor_cmd(struct w9968cf_device* cam, unsigned int cmd, void* arg) |
| 2099 | { |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 2100 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 2102 | rc = v4l2_subdev_call(cam->sensor_sd, core, ioctl, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | /* The I2C driver returns -EPERM on non-supported controls */ |
| 2104 | return (rc < 0 && rc != -EPERM) ? rc : 0; |
| 2105 | } |
| 2106 | |
| 2107 | |
| 2108 | /*-------------------------------------------------------------------------- |
| 2109 | Update some settings of the image sensor. |
| 2110 | Returns: 0 on success, a negative number otherwise. |
| 2111 | --------------------------------------------------------------------------*/ |
| 2112 | static int w9968cf_sensor_update_settings(struct w9968cf_device* cam) |
| 2113 | { |
| 2114 | int err = 0; |
| 2115 | |
| 2116 | /* Auto brightness */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2117 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_AUTOBRIGHT, |
| 2118 | cam->auto_brt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2119 | if (err) |
| 2120 | return err; |
| 2121 | |
| 2122 | /* Auto exposure */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2123 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_AUTOEXP, |
| 2124 | cam->auto_exp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | if (err) |
| 2126 | return err; |
| 2127 | |
| 2128 | /* Banding filter */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2129 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BANDFILT, |
| 2130 | cam->bandfilt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | if (err) |
| 2132 | return err; |
| 2133 | |
| 2134 | /* Light frequency */ |
| 2135 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_FREQ, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2136 | cam->lightfreq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | if (err) |
| 2138 | return err; |
| 2139 | |
| 2140 | /* Back light */ |
| 2141 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BACKLIGHT, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2142 | cam->backlight); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | if (err) |
| 2144 | return err; |
| 2145 | |
| 2146 | /* Mirror */ |
| 2147 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_MIRROR, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2148 | cam->mirror); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | if (err) |
| 2150 | return err; |
| 2151 | |
| 2152 | return 0; |
| 2153 | } |
| 2154 | |
| 2155 | |
| 2156 | /*-------------------------------------------------------------------------- |
| 2157 | Get some current picture settings from the image sensor and update the |
| 2158 | internal 'picture' structure of the camera. |
| 2159 | Returns: 0 on success, a negative number otherwise. |
| 2160 | --------------------------------------------------------------------------*/ |
| 2161 | static int w9968cf_sensor_get_picture(struct w9968cf_device* cam) |
| 2162 | { |
| 2163 | int err, v; |
| 2164 | |
| 2165 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_CONT, &v); |
| 2166 | if (err) |
| 2167 | return err; |
| 2168 | cam->picture.contrast = v; |
| 2169 | |
| 2170 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_BRIGHT, &v); |
| 2171 | if (err) |
| 2172 | return err; |
| 2173 | cam->picture.brightness = v; |
| 2174 | |
| 2175 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_SAT, &v); |
| 2176 | if (err) |
| 2177 | return err; |
| 2178 | cam->picture.colour = v; |
| 2179 | |
| 2180 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_HUE, &v); |
| 2181 | if (err) |
| 2182 | return err; |
| 2183 | cam->picture.hue = v; |
| 2184 | |
| 2185 | DBG(5, "Got picture settings from the image sensor") |
| 2186 | |
| 2187 | PDBGG("Brightness, contrast, hue, colour, whiteness are " |
| 2188 | "%u,%u,%u,%u,%u", cam->picture.brightness,cam->picture.contrast, |
| 2189 | cam->picture.hue, cam->picture.colour, cam->picture.whiteness) |
| 2190 | |
| 2191 | return 0; |
| 2192 | } |
| 2193 | |
| 2194 | |
| 2195 | /*-------------------------------------------------------------------------- |
| 2196 | Update picture settings of the image sensor. |
| 2197 | Returns: 0 on success, a negative number otherwise. |
| 2198 | --------------------------------------------------------------------------*/ |
| 2199 | static int |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2200 | w9968cf_sensor_update_picture(struct w9968cf_device* cam, |
| 2201 | struct video_picture pict) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | { |
| 2203 | int err = 0; |
| 2204 | |
| 2205 | if ((!cam->sensor_initialized) |
| 2206 | || pict.contrast != cam->picture.contrast) { |
| 2207 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_CONT, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2208 | pict.contrast); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | if (err) |
| 2210 | goto fail; |
| 2211 | DBG(4, "Contrast changed from %u to %u", |
| 2212 | cam->picture.contrast, pict.contrast) |
| 2213 | cam->picture.contrast = pict.contrast; |
| 2214 | } |
| 2215 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2216 | if (((!cam->sensor_initialized) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | pict.brightness != cam->picture.brightness) && (!cam->auto_brt)) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2218 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BRIGHT, |
| 2219 | pict.brightness); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | if (err) |
| 2221 | goto fail; |
| 2222 | DBG(4, "Brightness changed from %u to %u", |
| 2223 | cam->picture.brightness, pict.brightness) |
| 2224 | cam->picture.brightness = pict.brightness; |
| 2225 | } |
| 2226 | |
| 2227 | if ((!cam->sensor_initialized) || pict.colour != cam->picture.colour) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2228 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_SAT, |
| 2229 | pict.colour); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | if (err) |
| 2231 | goto fail; |
| 2232 | DBG(4, "Colour changed from %u to %u", |
| 2233 | cam->picture.colour, pict.colour) |
| 2234 | cam->picture.colour = pict.colour; |
| 2235 | } |
| 2236 | |
| 2237 | if ((!cam->sensor_initialized) || pict.hue != cam->picture.hue) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2238 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_HUE, |
| 2239 | pict.hue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | if (err) |
| 2241 | goto fail; |
| 2242 | DBG(4, "Hue changed from %u to %u", |
| 2243 | cam->picture.hue, pict.hue) |
| 2244 | cam->picture.hue = pict.hue; |
| 2245 | } |
| 2246 | |
| 2247 | return 0; |
| 2248 | |
| 2249 | fail: |
| 2250 | DBG(4, "Failed to change sensor picture setting") |
| 2251 | return err; |
| 2252 | } |
| 2253 | |
| 2254 | |
| 2255 | |
| 2256 | /**************************************************************************** |
| 2257 | * Camera configuration * |
| 2258 | ****************************************************************************/ |
| 2259 | |
| 2260 | /*-------------------------------------------------------------------------- |
| 2261 | This function is called when a supported image sensor is detected. |
| 2262 | Return 0 if the initialization succeeds, a negative number otherwise. |
| 2263 | --------------------------------------------------------------------------*/ |
| 2264 | static int w9968cf_sensor_init(struct w9968cf_device* cam) |
| 2265 | { |
| 2266 | int err = 0; |
| 2267 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2268 | if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_INITIALIZE, |
| 2269 | &cam->monochrome))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | goto error; |
| 2271 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2272 | if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_Q_SUBTYPE, |
| 2273 | &cam->sensor))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | goto error; |
| 2275 | |
| 2276 | /* NOTE: Make sure width and height are a multiple of 16 */ |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 2277 | switch (v4l2_i2c_subdev_addr(cam->sensor_sd)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | case OV6xx0_SID: |
| 2279 | cam->maxwidth = 352; |
| 2280 | cam->maxheight = 288; |
| 2281 | cam->minwidth = 64; |
| 2282 | cam->minheight = 48; |
| 2283 | break; |
| 2284 | case OV7xx0_SID: |
| 2285 | cam->maxwidth = 640; |
| 2286 | cam->maxheight = 480; |
| 2287 | cam->minwidth = 64; |
| 2288 | cam->minheight = 48; |
| 2289 | break; |
| 2290 | default: |
| 2291 | DBG(1, "Not supported image sensor detected for %s", |
| 2292 | symbolic(camlist, cam->id)) |
| 2293 | return -EINVAL; |
| 2294 | } |
| 2295 | |
| 2296 | /* These values depend on the ones in the ovxxx0.c sources */ |
| 2297 | switch (cam->sensor) { |
| 2298 | case CC_OV7620: |
| 2299 | cam->start_cropx = 287; |
| 2300 | cam->start_cropy = 35; |
| 2301 | /* Seems to work around a bug in the image sensor */ |
| 2302 | cam->vs_polarity = 1; |
| 2303 | cam->hs_polarity = 1; |
| 2304 | break; |
| 2305 | default: |
| 2306 | cam->start_cropx = 320; |
| 2307 | cam->start_cropy = 35; |
| 2308 | cam->vs_polarity = 1; |
| 2309 | cam->hs_polarity = 0; |
| 2310 | } |
| 2311 | |
| 2312 | if ((err = w9968cf_sensor_update_settings(cam))) |
| 2313 | goto error; |
| 2314 | |
| 2315 | if ((err = w9968cf_sensor_update_picture(cam, cam->picture))) |
| 2316 | goto error; |
| 2317 | |
| 2318 | cam->sensor_initialized = 1; |
| 2319 | |
| 2320 | DBG(2, "%s image sensor initialized", symbolic(senlist, cam->sensor)) |
| 2321 | return 0; |
| 2322 | |
| 2323 | error: |
| 2324 | cam->sensor_initialized = 0; |
| 2325 | cam->sensor = CC_UNKNOWN; |
| 2326 | DBG(1, "Image sensor initialization failed for %s (/dev/video%d). " |
| 2327 | "Try to detach and attach this device again", |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 2328 | symbolic(camlist, cam->id), cam->v4ldev->num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | return err; |
| 2330 | } |
| 2331 | |
| 2332 | |
| 2333 | /*-------------------------------------------------------------------------- |
| 2334 | Fill some basic fields in the main device data structure. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2335 | This function is called once on w9968cf_usb_probe() for each recognized |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | camera. |
| 2337 | --------------------------------------------------------------------------*/ |
| 2338 | static void |
| 2339 | w9968cf_configure_camera(struct w9968cf_device* cam, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2340 | struct usb_device* udev, |
| 2341 | enum w9968cf_model_id mod_id, |
| 2342 | const unsigned short dev_nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2344 | mutex_init(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | init_waitqueue_head(&cam->open); |
| 2346 | spin_lock_init(&cam->urb_lock); |
| 2347 | spin_lock_init(&cam->flist_lock); |
| 2348 | |
| 2349 | cam->users = 0; |
| 2350 | cam->disconnected = 0; |
| 2351 | cam->id = mod_id; |
| 2352 | cam->sensor = CC_UNKNOWN; |
| 2353 | cam->sensor_initialized = 0; |
| 2354 | |
| 2355 | /* Calculate the alternate setting number (from 1 to 16) |
| 2356 | according to the 'packet_size' module parameter */ |
| 2357 | if (packet_size[dev_nr] < W9968CF_MIN_PACKET_SIZE) |
| 2358 | packet_size[dev_nr] = W9968CF_MIN_PACKET_SIZE; |
| 2359 | for (cam->altsetting = 1; |
| 2360 | packet_size[dev_nr] < wMaxPacketSize[cam->altsetting-1]; |
| 2361 | cam->altsetting++); |
| 2362 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2363 | cam->max_buffers = (max_buffers[dev_nr] < 2 || |
| 2364 | max_buffers[dev_nr] > W9968CF_MAX_BUFFERS) |
| 2365 | ? W9968CF_BUFFERS : (u8)max_buffers[dev_nr]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2367 | cam->double_buffer = (double_buffer[dev_nr] == 0 || |
| 2368 | double_buffer[dev_nr] == 1) |
| 2369 | ? (u8)double_buffer[dev_nr]:W9968CF_DOUBLE_BUFFER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | |
| 2371 | cam->clamping = (clamping[dev_nr] == 0 || clamping[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2372 | ? (u8)clamping[dev_nr] : W9968CF_CLAMPING; |
| 2373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | cam->filter_type = (filter_type[dev_nr] == 0 || |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2375 | filter_type[dev_nr] == 1 || |
| 2376 | filter_type[dev_nr] == 2) |
| 2377 | ? (u8)filter_type[dev_nr] : W9968CF_FILTER_TYPE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2378 | |
| 2379 | cam->capture = 1; |
| 2380 | |
| 2381 | cam->largeview = (largeview[dev_nr] == 0 || largeview[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2382 | ? (u8)largeview[dev_nr] : W9968CF_LARGEVIEW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2384 | cam->decompression = (decompression[dev_nr] == 0 || |
| 2385 | decompression[dev_nr] == 1 || |
| 2386 | decompression[dev_nr] == 2) |
| 2387 | ? (u8)decompression[dev_nr]:W9968CF_DECOMPRESSION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2388 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2389 | cam->upscaling = (upscaling[dev_nr] == 0 || |
| 2390 | upscaling[dev_nr] == 1) |
| 2391 | ? (u8)upscaling[dev_nr] : W9968CF_UPSCALING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | |
| 2393 | cam->auto_brt = (autobright[dev_nr] == 0 || autobright[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2394 | ? (u8)autobright[dev_nr] : W9968CF_AUTOBRIGHT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2395 | |
| 2396 | cam->auto_exp = (autoexp[dev_nr] == 0 || autoexp[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2397 | ? (u8)autoexp[dev_nr] : W9968CF_AUTOEXP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | |
| 2399 | cam->lightfreq = (lightfreq[dev_nr] == 50 || lightfreq[dev_nr] == 60) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2400 | ? (u8)lightfreq[dev_nr] : W9968CF_LIGHTFREQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2401 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2402 | cam->bandfilt = (bandingfilter[dev_nr] == 0 || |
| 2403 | bandingfilter[dev_nr] == 1) |
| 2404 | ? (u8)bandingfilter[dev_nr] : W9968CF_BANDINGFILTER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | |
| 2406 | cam->backlight = (backlight[dev_nr] == 0 || backlight[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2407 | ? (u8)backlight[dev_nr] : W9968CF_BACKLIGHT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | |
| 2409 | cam->clockdiv = (clockdiv[dev_nr] == -1 || clockdiv[dev_nr] >= 0) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2410 | ? (s8)clockdiv[dev_nr] : W9968CF_CLOCKDIV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2411 | |
| 2412 | cam->mirror = (mirror[dev_nr] == 0 || mirror[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2413 | ? (u8)mirror[dev_nr] : W9968CF_MIRROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | |
| 2415 | cam->monochrome = (monochrome[dev_nr] == 0 || monochrome[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2416 | ? monochrome[dev_nr] : W9968CF_MONOCHROME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2417 | |
| 2418 | cam->picture.brightness = (u16)brightness[dev_nr]; |
| 2419 | cam->picture.hue = (u16)hue[dev_nr]; |
| 2420 | cam->picture.colour = (u16)colour[dev_nr]; |
| 2421 | cam->picture.contrast = (u16)contrast[dev_nr]; |
| 2422 | cam->picture.whiteness = (u16)whiteness[dev_nr]; |
| 2423 | if (w9968cf_valid_palette((u16)force_palette[dev_nr])) { |
| 2424 | cam->picture.palette = (u16)force_palette[dev_nr]; |
| 2425 | cam->force_palette = 1; |
| 2426 | } else { |
| 2427 | cam->force_palette = 0; |
| 2428 | if (cam->decompression == 0) |
| 2429 | cam->picture.palette = W9968CF_PALETTE_DECOMP_OFF; |
| 2430 | else if (cam->decompression == 1) |
| 2431 | cam->picture.palette = W9968CF_PALETTE_DECOMP_FORCE; |
| 2432 | else |
| 2433 | cam->picture.palette = W9968CF_PALETTE_DECOMP_ON; |
| 2434 | } |
| 2435 | cam->picture.depth = w9968cf_valid_depth(cam->picture.palette); |
| 2436 | |
| 2437 | cam->force_rgb = (force_rgb[dev_nr] == 0 || force_rgb[dev_nr] == 1) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2438 | ? (u8)force_rgb[dev_nr] : W9968CF_FORCE_RGB; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2439 | |
| 2440 | cam->window.x = 0; |
| 2441 | cam->window.y = 0; |
| 2442 | cam->window.width = W9968CF_WIDTH; |
| 2443 | cam->window.height = W9968CF_HEIGHT; |
| 2444 | cam->window.chromakey = 0; |
| 2445 | cam->window.clipcount = 0; |
| 2446 | cam->window.flags = 0; |
| 2447 | |
| 2448 | DBG(3, "%s configured with settings #%u:", |
| 2449 | symbolic(camlist, cam->id), dev_nr) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2450 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | DBG(3, "- Data packet size for USB isochrnous transfer: %u bytes", |
| 2452 | wMaxPacketSize[cam->altsetting-1]) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | DBG(3, "- Number of requested video frame buffers: %u", |
| 2455 | cam->max_buffers) |
| 2456 | |
| 2457 | if (cam->double_buffer) |
| 2458 | DBG(3, "- Hardware double buffering enabled") |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2459 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2460 | DBG(3, "- Hardware double buffering disabled") |
| 2461 | |
| 2462 | if (cam->filter_type == 0) |
| 2463 | DBG(3, "- Video filtering disabled") |
| 2464 | else if (cam->filter_type == 1) |
| 2465 | DBG(3, "- Video filtering enabled: type 1-2-1") |
| 2466 | else if (cam->filter_type == 2) |
| 2467 | DBG(3, "- Video filtering enabled: type 2-3-6-3-2") |
| 2468 | |
| 2469 | if (cam->clamping) |
| 2470 | DBG(3, "- Video data clamping (CCIR-601 format) enabled") |
| 2471 | else |
| 2472 | DBG(3, "- Video data clamping (CCIR-601 format) disabled") |
| 2473 | |
| 2474 | if (cam->largeview) |
| 2475 | DBG(3, "- Large view enabled") |
| 2476 | else |
| 2477 | DBG(3, "- Large view disabled") |
| 2478 | |
| 2479 | if ((cam->decompression) == 0 && (!cam->force_palette)) |
| 2480 | DBG(3, "- Decompression disabled") |
| 2481 | else if ((cam->decompression) == 1 && (!cam->force_palette)) |
| 2482 | DBG(3, "- Decompression forced") |
| 2483 | else if ((cam->decompression) == 2 && (!cam->force_palette)) |
| 2484 | DBG(3, "- Decompression allowed") |
| 2485 | |
| 2486 | if (cam->upscaling) |
| 2487 | DBG(3, "- Software image scaling enabled") |
| 2488 | else |
| 2489 | DBG(3, "- Software image scaling disabled") |
| 2490 | |
| 2491 | if (cam->force_palette) |
| 2492 | DBG(3, "- Image palette forced to %s", |
| 2493 | symbolic(v4l1_plist, cam->picture.palette)) |
| 2494 | |
| 2495 | if (cam->force_rgb) |
| 2496 | DBG(3, "- RGB component ordering will be used instead of BGR") |
| 2497 | |
| 2498 | if (cam->auto_brt) |
| 2499 | DBG(3, "- Auto brightness enabled") |
| 2500 | else |
| 2501 | DBG(3, "- Auto brightness disabled") |
| 2502 | |
| 2503 | if (cam->auto_exp) |
| 2504 | DBG(3, "- Auto exposure enabled") |
| 2505 | else |
| 2506 | DBG(3, "- Auto exposure disabled") |
| 2507 | |
| 2508 | if (cam->backlight) |
| 2509 | DBG(3, "- Backlight exposure algorithm enabled") |
| 2510 | else |
| 2511 | DBG(3, "- Backlight exposure algorithm disabled") |
| 2512 | |
| 2513 | if (cam->mirror) |
| 2514 | DBG(3, "- Mirror enabled") |
| 2515 | else |
| 2516 | DBG(3, "- Mirror disabled") |
| 2517 | |
| 2518 | if (cam->bandfilt) |
| 2519 | DBG(3, "- Banding filter enabled") |
| 2520 | else |
| 2521 | DBG(3, "- Banding filter disabled") |
| 2522 | |
| 2523 | DBG(3, "- Power lighting frequency: %u", cam->lightfreq) |
| 2524 | |
| 2525 | if (cam->clockdiv == -1) |
| 2526 | DBG(3, "- Automatic clock divisor enabled") |
| 2527 | else |
| 2528 | DBG(3, "- Clock divisor: %d", cam->clockdiv) |
| 2529 | |
| 2530 | if (cam->monochrome) |
| 2531 | DBG(3, "- Image sensor used as monochrome") |
| 2532 | else |
| 2533 | DBG(3, "- Image sensor not used as monochrome") |
| 2534 | } |
| 2535 | |
| 2536 | |
| 2537 | /*-------------------------------------------------------------------------- |
| 2538 | If the video post-processing module is not loaded, some parameters |
| 2539 | must be overridden. |
| 2540 | --------------------------------------------------------------------------*/ |
| 2541 | static void w9968cf_adjust_configuration(struct w9968cf_device* cam) |
| 2542 | { |
| 2543 | if (!w9968cf_vpp) { |
| 2544 | if (cam->decompression == 1) { |
| 2545 | cam->decompression = 2; |
| 2546 | DBG(2, "Video post-processing module not found: " |
| 2547 | "'decompression' parameter forced to 2") |
| 2548 | } |
| 2549 | if (cam->upscaling) { |
| 2550 | cam->upscaling = 0; |
| 2551 | DBG(2, "Video post-processing module not found: " |
| 2552 | "'upscaling' parameter forced to 0") |
| 2553 | } |
| 2554 | if (cam->picture.palette != VIDEO_PALETTE_UYVY) { |
| 2555 | cam->force_palette = 0; |
| 2556 | DBG(2, "Video post-processing module not found: " |
| 2557 | "'force_palette' parameter forced to 0") |
| 2558 | } |
| 2559 | cam->picture.palette = VIDEO_PALETTE_UYVY; |
| 2560 | cam->picture.depth = w9968cf_valid_depth(cam->picture.palette); |
| 2561 | } |
| 2562 | } |
| 2563 | |
| 2564 | |
| 2565 | /*-------------------------------------------------------------------------- |
| 2566 | Release the resources used by the driver. |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2567 | This function is called on disconnect |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | (or on close if deallocation has been deferred) |
| 2569 | --------------------------------------------------------------------------*/ |
| 2570 | static void w9968cf_release_resources(struct w9968cf_device* cam) |
| 2571 | { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2572 | mutex_lock(&w9968cf_devlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2573 | |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 2574 | DBG(2, "V4L device deregistered: /dev/video%d", cam->v4ldev->num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2575 | |
| 2576 | video_unregister_device(cam->v4ldev); |
| 2577 | list_del(&cam->v4llist); |
| 2578 | i2c_del_adapter(&cam->i2c_adapter); |
| 2579 | w9968cf_deallocate_memory(cam); |
| 2580 | kfree(cam->control_buffer); |
| 2581 | kfree(cam->data_buffer); |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 2582 | v4l2_device_unregister(&cam->v4l2_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2584 | mutex_unlock(&w9968cf_devlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | } |
| 2586 | |
| 2587 | |
| 2588 | |
| 2589 | /**************************************************************************** |
| 2590 | * Video4Linux interface * |
| 2591 | ****************************************************************************/ |
| 2592 | |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 2593 | static int w9968cf_open(struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2594 | { |
| 2595 | struct w9968cf_device* cam; |
| 2596 | int err; |
| 2597 | |
| 2598 | /* This the only safe way to prevent race conditions with disconnect */ |
| 2599 | if (!down_read_trylock(&w9968cf_disconnect)) |
Jiri Slaby | 3abff557 | 2007-10-09 22:03:12 -0300 | [diff] [blame] | 2600 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | |
| 2602 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); |
| 2603 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2604 | mutex_lock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2605 | |
| 2606 | if (cam->sensor == CC_UNKNOWN) { |
| 2607 | DBG(2, "No supported image sensor has been detected by the " |
| 2608 | "'ovcamchip' module for the %s (/dev/video%d). Make " |
| 2609 | "sure it is loaded *before* (re)connecting the camera.", |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 2610 | symbolic(camlist, cam->id), cam->v4ldev->num) |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2611 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2612 | up_read(&w9968cf_disconnect); |
| 2613 | return -ENODEV; |
| 2614 | } |
| 2615 | |
| 2616 | if (cam->users) { |
| 2617 | DBG(2, "%s (/dev/video%d) has been already occupied by '%s'", |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 2618 | symbolic(camlist, cam->id), cam->v4ldev->num, cam->command) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2619 | if ((filp->f_flags & O_NONBLOCK)||(filp->f_flags & O_NDELAY)) { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2620 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2621 | up_read(&w9968cf_disconnect); |
| 2622 | return -EWOULDBLOCK; |
| 2623 | } |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2624 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2625 | err = wait_event_interruptible_exclusive(cam->open, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2626 | cam->disconnected || |
| 2627 | !cam->users); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | if (err) { |
| 2629 | up_read(&w9968cf_disconnect); |
| 2630 | return err; |
| 2631 | } |
| 2632 | if (cam->disconnected) { |
| 2633 | up_read(&w9968cf_disconnect); |
| 2634 | return -ENODEV; |
| 2635 | } |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2636 | mutex_lock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | } |
| 2638 | |
| 2639 | DBG(5, "Opening '%s', /dev/video%d ...", |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 2640 | symbolic(camlist, cam->id), cam->v4ldev->num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | |
| 2642 | cam->streaming = 0; |
| 2643 | cam->misconfigured = 0; |
| 2644 | |
Adrian Bunk | 7f2c01a | 2006-01-09 00:43:39 +0100 | [diff] [blame] | 2645 | w9968cf_adjust_configuration(cam); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2646 | |
| 2647 | if ((err = w9968cf_allocate_memory(cam))) |
| 2648 | goto deallocate_memory; |
| 2649 | |
| 2650 | if ((err = w9968cf_init_chip(cam))) |
| 2651 | goto deallocate_memory; |
| 2652 | |
| 2653 | if ((err = w9968cf_start_transfer(cam))) |
| 2654 | goto deallocate_memory; |
| 2655 | |
| 2656 | filp->private_data = cam; |
| 2657 | |
| 2658 | cam->users++; |
| 2659 | strcpy(cam->command, current->comm); |
| 2660 | |
| 2661 | init_waitqueue_head(&cam->wait_queue); |
| 2662 | |
| 2663 | DBG(5, "Video device is open") |
| 2664 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2665 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2666 | up_read(&w9968cf_disconnect); |
| 2667 | |
| 2668 | return 0; |
| 2669 | |
| 2670 | deallocate_memory: |
| 2671 | w9968cf_deallocate_memory(cam); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | DBG(2, "Failed to open the video device") |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2673 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2674 | up_read(&w9968cf_disconnect); |
| 2675 | return err; |
| 2676 | } |
| 2677 | |
| 2678 | |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 2679 | static int w9968cf_release(struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | { |
| 2681 | struct w9968cf_device* cam; |
| 2682 | |
| 2683 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); |
| 2684 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2685 | mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2686 | |
| 2687 | w9968cf_stop_transfer(cam); |
| 2688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | if (cam->disconnected) { |
| 2690 | w9968cf_release_resources(cam); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2691 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2692 | kfree(cam); |
| 2693 | return 0; |
| 2694 | } |
| 2695 | |
| 2696 | cam->users--; |
| 2697 | w9968cf_deallocate_memory(cam); |
| 2698 | wake_up_interruptible_nr(&cam->open, 1); |
| 2699 | |
| 2700 | DBG(5, "Video device closed") |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2701 | mutex_unlock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | return 0; |
| 2703 | } |
| 2704 | |
| 2705 | |
| 2706 | static ssize_t |
| 2707 | w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos) |
| 2708 | { |
| 2709 | struct w9968cf_device* cam; |
| 2710 | struct w9968cf_frame_t* fr; |
| 2711 | int err = 0; |
| 2712 | |
| 2713 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); |
| 2714 | |
| 2715 | if (filp->f_flags & O_NONBLOCK) |
| 2716 | return -EWOULDBLOCK; |
| 2717 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2718 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2719 | return -ERESTARTSYS; |
| 2720 | |
| 2721 | if (cam->disconnected) { |
| 2722 | DBG(2, "Device not present") |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2723 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2724 | return -ENODEV; |
| 2725 | } |
| 2726 | |
| 2727 | if (cam->misconfigured) { |
| 2728 | DBG(2, "The camera is misconfigured. Close and open it again.") |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2729 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2730 | return -EIO; |
| 2731 | } |
| 2732 | |
| 2733 | if (!cam->frame[0].queued) |
| 2734 | w9968cf_push_frame(cam, 0); |
| 2735 | |
| 2736 | if (!cam->frame[1].queued) |
| 2737 | w9968cf_push_frame(cam, 1); |
| 2738 | |
| 2739 | err = wait_event_interruptible(cam->wait_queue, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2740 | cam->frame[0].status == F_READY || |
| 2741 | cam->frame[1].status == F_READY || |
| 2742 | cam->disconnected); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2743 | if (err) { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2744 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | return err; |
| 2746 | } |
| 2747 | if (cam->disconnected) { |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2748 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2749 | return -ENODEV; |
| 2750 | } |
| 2751 | |
| 2752 | fr = (cam->frame[0].status == F_READY) ? &cam->frame[0]:&cam->frame[1]; |
| 2753 | |
| 2754 | if (w9968cf_vpp) |
| 2755 | w9968cf_postprocess_frame(cam, fr); |
| 2756 | |
| 2757 | if (count > fr->length) |
| 2758 | count = fr->length; |
| 2759 | |
| 2760 | if (copy_to_user(buf, fr->buffer, count)) { |
| 2761 | fr->status = F_UNUSED; |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2762 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2763 | return -EFAULT; |
| 2764 | } |
| 2765 | *f_pos += count; |
| 2766 | |
| 2767 | fr->status = F_UNUSED; |
| 2768 | |
| 2769 | DBG(5, "%zu bytes read", count) |
| 2770 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2771 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2772 | return count; |
| 2773 | } |
| 2774 | |
| 2775 | |
| 2776 | static int w9968cf_mmap(struct file* filp, struct vm_area_struct *vma) |
| 2777 | { |
| 2778 | struct w9968cf_device* cam = (struct w9968cf_device*) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2779 | video_get_drvdata(video_devdata(filp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | unsigned long vsize = vma->vm_end - vma->vm_start, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2781 | psize = cam->nbuffers * cam->frame[0].size, |
| 2782 | start = vma->vm_start, |
| 2783 | pos = (unsigned long)cam->frame[0].buffer, |
| 2784 | page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2785 | |
| 2786 | if (cam->disconnected) { |
| 2787 | DBG(2, "Device not present") |
| 2788 | return -ENODEV; |
| 2789 | } |
| 2790 | |
| 2791 | if (cam->misconfigured) { |
| 2792 | DBG(2, "The camera is misconfigured. Close and open it again") |
| 2793 | return -EIO; |
| 2794 | } |
| 2795 | |
| 2796 | PDBGG("mmapping %lu bytes...", vsize) |
| 2797 | |
| 2798 | if (vsize > psize - (vma->vm_pgoff << PAGE_SHIFT)) |
| 2799 | return -EINVAL; |
| 2800 | |
| 2801 | while (vsize > 0) { |
| 2802 | page = vmalloc_to_pfn((void *)pos); |
| 2803 | if (remap_pfn_range(vma, start, page + vma->vm_pgoff, |
| 2804 | PAGE_SIZE, vma->vm_page_prot)) |
| 2805 | return -EAGAIN; |
| 2806 | start += PAGE_SIZE; |
| 2807 | pos += PAGE_SIZE; |
| 2808 | vsize -= PAGE_SIZE; |
| 2809 | } |
| 2810 | |
| 2811 | DBG(5, "mmap method successfully called") |
| 2812 | return 0; |
| 2813 | } |
| 2814 | |
| 2815 | |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 2816 | static long |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 2817 | w9968cf_ioctl(struct file *filp, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2818 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2819 | { |
| 2820 | struct w9968cf_device* cam; |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 2821 | long err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2822 | |
| 2823 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); |
| 2824 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2825 | if (mutex_lock_interruptible(&cam->fileop_mutex)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2826 | return -ERESTARTSYS; |
| 2827 | |
| 2828 | if (cam->disconnected) { |
| 2829 | DBG(2, "Device not present") |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2830 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2831 | return -ENODEV; |
| 2832 | } |
| 2833 | |
| 2834 | if (cam->misconfigured) { |
| 2835 | DBG(2, "The camera is misconfigured. Close and open it again.") |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2836 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | return -EIO; |
| 2838 | } |
| 2839 | |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 2840 | err = w9968cf_v4l_ioctl(filp, cmd, (void __user *)arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2841 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 2842 | mutex_unlock(&cam->fileop_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2843 | return err; |
| 2844 | } |
| 2845 | |
| 2846 | |
Hans Verkuil | 069b747 | 2008-12-30 07:04:34 -0300 | [diff] [blame] | 2847 | static long w9968cf_v4l_ioctl(struct file *filp, |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 2848 | unsigned int cmd, void __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2849 | { |
| 2850 | struct w9968cf_device* cam; |
| 2851 | const char* v4l1_ioctls[] = { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2852 | "?", "CGAP", "GCHAN", "SCHAN", "GTUNER", "STUNER", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | "GPICT", "SPICT", "CCAPTURE", "GWIN", "SWIN", "GFBUF", |
| 2854 | "SFBUF", "KEY", "GFREQ", "SFREQ", "GAUDIO", "SAUDIO", |
| 2855 | "SYNC", "MCAPTURE", "GMBUF", "GUNIT", "GCAPTURE", "SCAPTURE", |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2856 | "SPLAYMODE", "SWRITEMODE", "GPLAYINFO", "SMICROCODE", |
| 2857 | "GVBIFMT", "SVBIFMT" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | }; |
| 2859 | |
| 2860 | #define V4L1_IOCTL(cmd) \ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2861 | ((_IOC_NR((cmd)) < ARRAY_SIZE(v4l1_ioctls)) ? \ |
| 2862 | v4l1_ioctls[_IOC_NR((cmd))] : "?") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2863 | |
| 2864 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); |
| 2865 | |
| 2866 | switch (cmd) { |
| 2867 | |
| 2868 | case VIDIOCGCAP: /* get video capability */ |
| 2869 | { |
| 2870 | struct video_capability cap = { |
| 2871 | .type = VID_TYPE_CAPTURE | VID_TYPE_SCALES, |
| 2872 | .channels = 1, |
| 2873 | .audios = 0, |
| 2874 | .minwidth = cam->minwidth, |
| 2875 | .minheight = cam->minheight, |
| 2876 | }; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2877 | sprintf(cap.name, "W996[87]CF USB Camera #%d", |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 2878 | cam->v4ldev->num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2879 | cap.maxwidth = (cam->upscaling && w9968cf_vpp) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2880 | ? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth) |
| 2881 | : cam->maxwidth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | cap.maxheight = (cam->upscaling && w9968cf_vpp) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2883 | ? max((u16)W9968CF_MAX_HEIGHT, cam->maxheight) |
| 2884 | : cam->maxheight; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | |
| 2886 | if (copy_to_user(arg, &cap, sizeof(cap))) |
| 2887 | return -EFAULT; |
| 2888 | |
| 2889 | DBG(5, "VIDIOCGCAP successfully called") |
| 2890 | return 0; |
| 2891 | } |
| 2892 | |
| 2893 | case VIDIOCGCHAN: /* get video channel informations */ |
| 2894 | { |
| 2895 | struct video_channel chan; |
| 2896 | if (copy_from_user(&chan, arg, sizeof(chan))) |
| 2897 | return -EFAULT; |
| 2898 | |
| 2899 | if (chan.channel != 0) |
| 2900 | return -EINVAL; |
| 2901 | |
| 2902 | strcpy(chan.name, "Camera"); |
| 2903 | chan.tuners = 0; |
| 2904 | chan.flags = 0; |
| 2905 | chan.type = VIDEO_TYPE_CAMERA; |
| 2906 | chan.norm = VIDEO_MODE_AUTO; |
| 2907 | |
| 2908 | if (copy_to_user(arg, &chan, sizeof(chan))) |
| 2909 | return -EFAULT; |
| 2910 | |
| 2911 | DBG(5, "VIDIOCGCHAN successfully called") |
| 2912 | return 0; |
| 2913 | } |
| 2914 | |
| 2915 | case VIDIOCSCHAN: /* set active channel */ |
| 2916 | { |
| 2917 | struct video_channel chan; |
| 2918 | |
| 2919 | if (copy_from_user(&chan, arg, sizeof(chan))) |
| 2920 | return -EFAULT; |
| 2921 | |
| 2922 | if (chan.channel != 0) |
| 2923 | return -EINVAL; |
| 2924 | |
| 2925 | DBG(5, "VIDIOCSCHAN successfully called") |
| 2926 | return 0; |
| 2927 | } |
| 2928 | |
| 2929 | case VIDIOCGPICT: /* get image properties of the picture */ |
| 2930 | { |
| 2931 | if (w9968cf_sensor_get_picture(cam)) |
| 2932 | return -EIO; |
| 2933 | |
| 2934 | if (copy_to_user(arg, &cam->picture, sizeof(cam->picture))) |
| 2935 | return -EFAULT; |
| 2936 | |
| 2937 | DBG(5, "VIDIOCGPICT successfully called") |
| 2938 | return 0; |
| 2939 | } |
| 2940 | |
| 2941 | case VIDIOCSPICT: /* change picture settings */ |
| 2942 | { |
| 2943 | struct video_picture pict; |
| 2944 | int err = 0; |
| 2945 | |
| 2946 | if (copy_from_user(&pict, arg, sizeof(pict))) |
| 2947 | return -EFAULT; |
| 2948 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2949 | if ( (cam->force_palette || !w9968cf_vpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | && pict.palette != cam->picture.palette ) { |
| 2951 | DBG(4, "Palette %s rejected: only %s is allowed", |
| 2952 | symbolic(v4l1_plist, pict.palette), |
| 2953 | symbolic(v4l1_plist, cam->picture.palette)) |
| 2954 | return -EINVAL; |
| 2955 | } |
| 2956 | |
| 2957 | if (!w9968cf_valid_palette(pict.palette)) { |
| 2958 | DBG(4, "Palette %s not supported. VIDIOCSPICT failed", |
| 2959 | symbolic(v4l1_plist, pict.palette)) |
| 2960 | return -EINVAL; |
| 2961 | } |
| 2962 | |
| 2963 | if (!cam->force_palette) { |
| 2964 | if (cam->decompression == 0) { |
| 2965 | if (w9968cf_need_decompression(pict.palette)) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2966 | DBG(4, "Decompression disabled: palette %s is not " |
| 2967 | "allowed. VIDIOCSPICT failed", |
| 2968 | symbolic(v4l1_plist, pict.palette)) |
| 2969 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2970 | } |
| 2971 | } else if (cam->decompression == 1) { |
| 2972 | if (!w9968cf_need_decompression(pict.palette)) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2973 | DBG(4, "Decompression forced: palette %s is not " |
| 2974 | "allowed. VIDIOCSPICT failed", |
| 2975 | symbolic(v4l1_plist, pict.palette)) |
| 2976 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2977 | } |
| 2978 | } |
| 2979 | } |
| 2980 | |
| 2981 | if (pict.depth != w9968cf_valid_depth(pict.palette)) { |
| 2982 | DBG(4, "Requested depth %u bpp is not valid for %s " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2983 | "palette: ignored and changed to %u bpp", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2984 | pict.depth, symbolic(v4l1_plist, pict.palette), |
| 2985 | w9968cf_valid_depth(pict.palette)) |
| 2986 | pict.depth = w9968cf_valid_depth(pict.palette); |
| 2987 | } |
| 2988 | |
| 2989 | if (pict.palette != cam->picture.palette) { |
| 2990 | if(*cam->requested_frame |
| 2991 | || cam->frame_current->queued) { |
| 2992 | err = wait_event_interruptible |
| 2993 | ( cam->wait_queue, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 2994 | cam->disconnected || |
| 2995 | (!*cam->requested_frame && |
| 2996 | !cam->frame_current->queued) ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2997 | if (err) |
| 2998 | return err; |
| 2999 | if (cam->disconnected) |
| 3000 | return -ENODEV; |
| 3001 | } |
| 3002 | |
| 3003 | if (w9968cf_stop_transfer(cam)) |
| 3004 | goto ioctl_fail; |
| 3005 | |
| 3006 | if (w9968cf_set_picture(cam, pict)) |
| 3007 | goto ioctl_fail; |
| 3008 | |
| 3009 | if (w9968cf_start_transfer(cam)) |
| 3010 | goto ioctl_fail; |
| 3011 | |
| 3012 | } else if (w9968cf_sensor_update_picture(cam, pict)) |
| 3013 | return -EIO; |
| 3014 | |
| 3015 | |
| 3016 | DBG(5, "VIDIOCSPICT successfully called") |
| 3017 | return 0; |
| 3018 | } |
| 3019 | |
| 3020 | case VIDIOCSWIN: /* set capture area */ |
| 3021 | { |
| 3022 | struct video_window win; |
| 3023 | int err = 0; |
| 3024 | |
| 3025 | if (copy_from_user(&win, arg, sizeof(win))) |
| 3026 | return -EFAULT; |
| 3027 | |
| 3028 | DBG(6, "VIDIOCSWIN called: clipcount=%d, flags=%u, " |
| 3029 | "x=%u, y=%u, %ux%u", win.clipcount, win.flags, |
| 3030 | win.x, win.y, win.width, win.height) |
| 3031 | |
| 3032 | if (win.clipcount != 0 || win.flags != 0) |
| 3033 | return -EINVAL; |
| 3034 | |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 3035 | if ((err = w9968cf_adjust_window_size(cam, &win.width, |
| 3036 | &win.height))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3037 | DBG(4, "Resolution not supported (%ux%u). " |
| 3038 | "VIDIOCSWIN failed", win.width, win.height) |
| 3039 | return err; |
| 3040 | } |
| 3041 | |
| 3042 | if (win.x != cam->window.x || |
| 3043 | win.y != cam->window.y || |
| 3044 | win.width != cam->window.width || |
| 3045 | win.height != cam->window.height) { |
| 3046 | if(*cam->requested_frame |
| 3047 | || cam->frame_current->queued) { |
| 3048 | err = wait_event_interruptible |
| 3049 | ( cam->wait_queue, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3050 | cam->disconnected || |
| 3051 | (!*cam->requested_frame && |
| 3052 | !cam->frame_current->queued) ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3053 | if (err) |
| 3054 | return err; |
| 3055 | if (cam->disconnected) |
| 3056 | return -ENODEV; |
| 3057 | } |
| 3058 | |
| 3059 | if (w9968cf_stop_transfer(cam)) |
| 3060 | goto ioctl_fail; |
| 3061 | |
| 3062 | /* This _must_ be called before set_window() */ |
| 3063 | if (w9968cf_set_picture(cam, cam->picture)) |
| 3064 | goto ioctl_fail; |
| 3065 | |
| 3066 | if (w9968cf_set_window(cam, win)) |
| 3067 | goto ioctl_fail; |
| 3068 | |
| 3069 | if (w9968cf_start_transfer(cam)) |
| 3070 | goto ioctl_fail; |
| 3071 | } |
| 3072 | |
| 3073 | DBG(5, "VIDIOCSWIN successfully called. ") |
| 3074 | return 0; |
| 3075 | } |
| 3076 | |
| 3077 | case VIDIOCGWIN: /* get current window properties */ |
| 3078 | { |
| 3079 | if (copy_to_user(arg,&cam->window,sizeof(struct video_window))) |
| 3080 | return -EFAULT; |
| 3081 | |
| 3082 | DBG(5, "VIDIOCGWIN successfully called") |
| 3083 | return 0; |
| 3084 | } |
| 3085 | |
| 3086 | case VIDIOCGMBUF: /* request for memory (mapped) buffer */ |
| 3087 | { |
| 3088 | struct video_mbuf mbuf; |
| 3089 | u8 i; |
| 3090 | |
| 3091 | mbuf.size = cam->nbuffers * cam->frame[0].size; |
| 3092 | mbuf.frames = cam->nbuffers; |
| 3093 | for (i = 0; i < cam->nbuffers; i++) |
| 3094 | mbuf.offsets[i] = (unsigned long)cam->frame[i].buffer - |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3095 | (unsigned long)cam->frame[0].buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3096 | |
| 3097 | if (copy_to_user(arg, &mbuf, sizeof(mbuf))) |
| 3098 | return -EFAULT; |
| 3099 | |
| 3100 | DBG(5, "VIDIOCGMBUF successfully called") |
| 3101 | return 0; |
| 3102 | } |
| 3103 | |
| 3104 | case VIDIOCMCAPTURE: /* start the capture to a frame */ |
| 3105 | { |
| 3106 | struct video_mmap mmap; |
| 3107 | struct w9968cf_frame_t* fr; |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 3108 | u32 w, h; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | int err = 0; |
| 3110 | |
| 3111 | if (copy_from_user(&mmap, arg, sizeof(mmap))) |
| 3112 | return -EFAULT; |
| 3113 | |
| 3114 | DBG(6, "VIDIOCMCAPTURE called: frame #%u, format=%s, %dx%d", |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3115 | mmap.frame, symbolic(v4l1_plist, mmap.format), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3116 | mmap.width, mmap.height) |
| 3117 | |
| 3118 | if (mmap.frame >= cam->nbuffers) { |
| 3119 | DBG(4, "Invalid frame number (%u). " |
| 3120 | "VIDIOCMCAPTURE failed", mmap.frame) |
| 3121 | return -EINVAL; |
| 3122 | } |
| 3123 | |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3124 | if (mmap.format!=cam->picture.palette && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3125 | (cam->force_palette || !w9968cf_vpp)) { |
| 3126 | DBG(4, "Palette %s rejected: only %s is allowed", |
| 3127 | symbolic(v4l1_plist, mmap.format), |
| 3128 | symbolic(v4l1_plist, cam->picture.palette)) |
| 3129 | return -EINVAL; |
| 3130 | } |
| 3131 | |
| 3132 | if (!w9968cf_valid_palette(mmap.format)) { |
| 3133 | DBG(4, "Palette %s not supported. " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3134 | "VIDIOCMCAPTURE failed", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3135 | symbolic(v4l1_plist, mmap.format)) |
| 3136 | return -EINVAL; |
| 3137 | } |
| 3138 | |
| 3139 | if (!cam->force_palette) { |
| 3140 | if (cam->decompression == 0) { |
| 3141 | if (w9968cf_need_decompression(mmap.format)) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3142 | DBG(4, "Decompression disabled: palette %s is not " |
| 3143 | "allowed. VIDIOCSPICT failed", |
| 3144 | symbolic(v4l1_plist, mmap.format)) |
| 3145 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3146 | } |
| 3147 | } else if (cam->decompression == 1) { |
| 3148 | if (!w9968cf_need_decompression(mmap.format)) { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3149 | DBG(4, "Decompression forced: palette %s is not " |
| 3150 | "allowed. VIDIOCSPICT failed", |
| 3151 | symbolic(v4l1_plist, mmap.format)) |
| 3152 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3153 | } |
| 3154 | } |
| 3155 | } |
| 3156 | |
Trent Piepho | 1c657a9 | 2009-05-30 21:45:46 -0300 | [diff] [blame] | 3157 | w = mmap.width; h = mmap.height; |
| 3158 | err = w9968cf_adjust_window_size(cam, &w, &h); |
| 3159 | mmap.width = w; mmap.height = h; |
| 3160 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3161 | DBG(4, "Resolution not supported (%dx%d). " |
| 3162 | "VIDIOCMCAPTURE failed", |
| 3163 | mmap.width, mmap.height) |
| 3164 | return err; |
| 3165 | } |
| 3166 | |
| 3167 | fr = &cam->frame[mmap.frame]; |
| 3168 | |
| 3169 | if (mmap.width != cam->window.width || |
| 3170 | mmap.height != cam->window.height || |
| 3171 | mmap.format != cam->picture.palette) { |
| 3172 | |
| 3173 | struct video_window win; |
| 3174 | struct video_picture pict; |
| 3175 | |
| 3176 | if(*cam->requested_frame |
| 3177 | || cam->frame_current->queued) { |
| 3178 | DBG(6, "VIDIOCMCAPTURE. Change settings for " |
| 3179 | "frame #%u: %dx%d, format %s. Wait...", |
| 3180 | mmap.frame, mmap.width, mmap.height, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3181 | symbolic(v4l1_plist, mmap.format)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3182 | err = wait_event_interruptible |
| 3183 | ( cam->wait_queue, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3184 | cam->disconnected || |
| 3185 | (!*cam->requested_frame && |
| 3186 | !cam->frame_current->queued) ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3187 | if (err) |
| 3188 | return err; |
| 3189 | if (cam->disconnected) |
| 3190 | return -ENODEV; |
| 3191 | } |
| 3192 | |
| 3193 | memcpy(&win, &cam->window, sizeof(win)); |
| 3194 | memcpy(&pict, &cam->picture, sizeof(pict)); |
| 3195 | win.width = mmap.width; |
| 3196 | win.height = mmap.height; |
| 3197 | pict.palette = mmap.format; |
| 3198 | |
| 3199 | if (w9968cf_stop_transfer(cam)) |
| 3200 | goto ioctl_fail; |
| 3201 | |
| 3202 | /* This before set_window */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3203 | if (w9968cf_set_picture(cam, pict)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3204 | goto ioctl_fail; |
| 3205 | |
| 3206 | if (w9968cf_set_window(cam, win)) |
| 3207 | goto ioctl_fail; |
| 3208 | |
| 3209 | if (w9968cf_start_transfer(cam)) |
| 3210 | goto ioctl_fail; |
| 3211 | |
| 3212 | } else if (fr->queued) { |
| 3213 | |
| 3214 | DBG(6, "Wait until frame #%u is free", mmap.frame) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3215 | |
| 3216 | err = wait_event_interruptible(cam->wait_queue, |
| 3217 | cam->disconnected || |
| 3218 | (!fr->queued)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3219 | if (err) |
| 3220 | return err; |
| 3221 | if (cam->disconnected) |
| 3222 | return -ENODEV; |
| 3223 | } |
| 3224 | |
| 3225 | w9968cf_push_frame(cam, mmap.frame); |
| 3226 | DBG(5, "VIDIOCMCAPTURE(%u): successfully called", mmap.frame) |
| 3227 | return 0; |
| 3228 | } |
| 3229 | |
| 3230 | case VIDIOCSYNC: /* wait until the capture of a frame is finished */ |
| 3231 | { |
| 3232 | unsigned int f_num; |
| 3233 | struct w9968cf_frame_t* fr; |
| 3234 | int err = 0; |
| 3235 | |
| 3236 | if (copy_from_user(&f_num, arg, sizeof(f_num))) |
| 3237 | return -EFAULT; |
| 3238 | |
| 3239 | if (f_num >= cam->nbuffers) { |
| 3240 | DBG(4, "Invalid frame number (%u). " |
| 3241 | "VIDIOCMCAPTURE failed", f_num) |
| 3242 | return -EINVAL; |
| 3243 | } |
| 3244 | |
| 3245 | DBG(6, "VIDIOCSYNC called for frame #%u", f_num) |
| 3246 | |
| 3247 | fr = &cam->frame[f_num]; |
| 3248 | |
| 3249 | switch (fr->status) { |
| 3250 | case F_UNUSED: |
| 3251 | if (!fr->queued) { |
| 3252 | DBG(4, "VIDIOSYNC: Frame #%u not requested!", |
| 3253 | f_num) |
| 3254 | return -EFAULT; |
| 3255 | } |
| 3256 | case F_ERROR: |
| 3257 | case F_GRABBING: |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3258 | err = wait_event_interruptible(cam->wait_queue, |
| 3259 | (fr->status == F_READY) |
| 3260 | || cam->disconnected); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3261 | if (err) |
| 3262 | return err; |
| 3263 | if (cam->disconnected) |
| 3264 | return -ENODEV; |
| 3265 | break; |
| 3266 | case F_READY: |
| 3267 | break; |
| 3268 | } |
| 3269 | |
| 3270 | if (w9968cf_vpp) |
| 3271 | w9968cf_postprocess_frame(cam, fr); |
| 3272 | |
| 3273 | fr->status = F_UNUSED; |
| 3274 | |
| 3275 | DBG(5, "VIDIOCSYNC(%u) successfully called", f_num) |
| 3276 | return 0; |
| 3277 | } |
| 3278 | |
| 3279 | case VIDIOCGUNIT:/* report the unit numbers of the associated devices*/ |
| 3280 | { |
| 3281 | struct video_unit unit = { |
| 3282 | .video = cam->v4ldev->minor, |
| 3283 | .vbi = VIDEO_NO_UNIT, |
| 3284 | .radio = VIDEO_NO_UNIT, |
| 3285 | .audio = VIDEO_NO_UNIT, |
| 3286 | .teletext = VIDEO_NO_UNIT, |
| 3287 | }; |
| 3288 | |
| 3289 | if (copy_to_user(arg, &unit, sizeof(unit))) |
| 3290 | return -EFAULT; |
| 3291 | |
| 3292 | DBG(5, "VIDIOCGUNIT successfully called") |
| 3293 | return 0; |
| 3294 | } |
| 3295 | |
| 3296 | case VIDIOCKEY: |
| 3297 | return 0; |
| 3298 | |
| 3299 | case VIDIOCGFBUF: |
| 3300 | { |
| 3301 | if (clear_user(arg, sizeof(struct video_buffer))) |
| 3302 | return -EFAULT; |
| 3303 | |
| 3304 | DBG(5, "VIDIOCGFBUF successfully called") |
| 3305 | return 0; |
| 3306 | } |
| 3307 | |
| 3308 | case VIDIOCGTUNER: |
| 3309 | { |
| 3310 | struct video_tuner tuner; |
| 3311 | if (copy_from_user(&tuner, arg, sizeof(tuner))) |
| 3312 | return -EFAULT; |
| 3313 | |
| 3314 | if (tuner.tuner != 0) |
| 3315 | return -EINVAL; |
| 3316 | |
| 3317 | strcpy(tuner.name, "no_tuner"); |
| 3318 | tuner.rangelow = 0; |
| 3319 | tuner.rangehigh = 0; |
| 3320 | tuner.flags = VIDEO_TUNER_NORM; |
| 3321 | tuner.mode = VIDEO_MODE_AUTO; |
| 3322 | tuner.signal = 0xffff; |
| 3323 | |
| 3324 | if (copy_to_user(arg, &tuner, sizeof(tuner))) |
| 3325 | return -EFAULT; |
| 3326 | |
| 3327 | DBG(5, "VIDIOCGTUNER successfully called") |
| 3328 | return 0; |
| 3329 | } |
| 3330 | |
| 3331 | case VIDIOCSTUNER: |
| 3332 | { |
| 3333 | struct video_tuner tuner; |
| 3334 | if (copy_from_user(&tuner, arg, sizeof(tuner))) |
| 3335 | return -EFAULT; |
| 3336 | |
| 3337 | if (tuner.tuner != 0) |
| 3338 | return -EINVAL; |
| 3339 | |
| 3340 | if (tuner.mode != VIDEO_MODE_AUTO) |
| 3341 | return -EINVAL; |
| 3342 | |
| 3343 | DBG(5, "VIDIOCSTUNER successfully called") |
| 3344 | return 0; |
| 3345 | } |
| 3346 | |
| 3347 | case VIDIOCSFBUF: |
| 3348 | case VIDIOCCAPTURE: |
| 3349 | case VIDIOCGFREQ: |
| 3350 | case VIDIOCSFREQ: |
| 3351 | case VIDIOCGAUDIO: |
| 3352 | case VIDIOCSAUDIO: |
| 3353 | case VIDIOCSPLAYMODE: |
| 3354 | case VIDIOCSWRITEMODE: |
| 3355 | case VIDIOCGPLAYINFO: |
| 3356 | case VIDIOCSMICROCODE: |
| 3357 | case VIDIOCGVBIFMT: |
| 3358 | case VIDIOCSVBIFMT: |
| 3359 | DBG(4, "Unsupported V4L1 IOCtl: VIDIOC%s " |
| 3360 | "(type 0x%01X, " |
| 3361 | "n. 0x%01X, " |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3362 | "dir. 0x%01X, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3363 | "size 0x%02X)", |
| 3364 | V4L1_IOCTL(cmd), |
| 3365 | _IOC_TYPE(cmd),_IOC_NR(cmd),_IOC_DIR(cmd),_IOC_SIZE(cmd)) |
| 3366 | |
| 3367 | return -EINVAL; |
| 3368 | |
| 3369 | default: |
| 3370 | DBG(4, "Invalid V4L1 IOCtl: VIDIOC%s " |
| 3371 | "type 0x%01X, " |
| 3372 | "n. 0x%01X, " |
| 3373 | "dir. 0x%01X, " |
| 3374 | "size 0x%02X", |
| 3375 | V4L1_IOCTL(cmd), |
| 3376 | _IOC_TYPE(cmd),_IOC_NR(cmd),_IOC_DIR(cmd),_IOC_SIZE(cmd)) |
| 3377 | |
| 3378 | return -ENOIOCTLCMD; |
| 3379 | |
| 3380 | } /* end of switch */ |
| 3381 | |
| 3382 | ioctl_fail: |
| 3383 | cam->misconfigured = 1; |
| 3384 | DBG(1, "VIDIOC%s failed because of hardware problems. " |
| 3385 | "To use the camera, close and open it again.", V4L1_IOCTL(cmd)) |
| 3386 | return -EFAULT; |
| 3387 | } |
| 3388 | |
| 3389 | |
Hans Verkuil | bec43661 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 3390 | static const struct v4l2_file_operations w9968cf_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3391 | .owner = THIS_MODULE, |
| 3392 | .open = w9968cf_open, |
| 3393 | .release = w9968cf_release, |
| 3394 | .read = w9968cf_read, |
| 3395 | .ioctl = w9968cf_ioctl, |
| 3396 | .mmap = w9968cf_mmap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3397 | }; |
| 3398 | |
| 3399 | |
| 3400 | |
| 3401 | /**************************************************************************** |
| 3402 | * USB probe and V4L registration, disconnect and id_table[] definition * |
| 3403 | ****************************************************************************/ |
| 3404 | |
| 3405 | static int |
| 3406 | w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) |
| 3407 | { |
| 3408 | struct usb_device *udev = interface_to_usbdev(intf); |
| 3409 | struct w9968cf_device* cam; |
| 3410 | int err = 0; |
| 3411 | enum w9968cf_model_id mod_id; |
| 3412 | struct list_head* ptr; |
| 3413 | u8 sc = 0; /* number of simultaneous cameras */ |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame] | 3414 | static unsigned short dev_nr; /* 0 - we are handling device number n */ |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 3415 | static unsigned short addrs[] = { |
| 3416 | OV7xx0_SID, |
| 3417 | OV6xx0_SID, |
| 3418 | I2C_CLIENT_END |
| 3419 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3420 | |
| 3421 | if (le16_to_cpu(udev->descriptor.idVendor) == winbond_id_table[0].idVendor && |
| 3422 | le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[0].idProduct) |
| 3423 | mod_id = W9968CF_MOD_CLVBWGP; /* see camlist[] table */ |
| 3424 | else if (le16_to_cpu(udev->descriptor.idVendor) == winbond_id_table[1].idVendor && |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3425 | le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[1].idProduct) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3426 | mod_id = W9968CF_MOD_GENERIC; /* see camlist[] table */ |
| 3427 | else |
| 3428 | return -ENODEV; |
| 3429 | |
| 3430 | cam = (struct w9968cf_device*) |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3431 | kzalloc(sizeof(struct w9968cf_device), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3432 | if (!cam) |
| 3433 | return -ENOMEM; |
| 3434 | |
Janne Grunau | 119753a | 2009-04-01 08:49:16 -0300 | [diff] [blame] | 3435 | err = v4l2_device_register(&intf->dev, &cam->v4l2_dev); |
Hans Verkuil | 4e06839 | 2009-03-08 06:56:19 -0300 | [diff] [blame] | 3436 | if (err) |
| 3437 | goto fail0; |
| 3438 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3439 | mutex_init(&cam->dev_mutex); |
| 3440 | mutex_lock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3441 | |
| 3442 | cam->usbdev = udev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3443 | |
| 3444 | DBG(2, "%s detected", symbolic(camlist, mod_id)) |
| 3445 | |
| 3446 | if (simcams > W9968CF_MAX_DEVICES) |
| 3447 | simcams = W9968CF_SIMCAMS; |
| 3448 | |
| 3449 | /* How many cameras are connected ? */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3450 | mutex_lock(&w9968cf_devlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3451 | list_for_each(ptr, &w9968cf_dev_list) |
| 3452 | sc++; |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3453 | mutex_unlock(&w9968cf_devlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3454 | |
| 3455 | if (sc >= simcams) { |
| 3456 | DBG(2, "Device rejected: too many connected cameras " |
| 3457 | "(max. %u)", simcams) |
| 3458 | err = -EPERM; |
| 3459 | goto fail; |
| 3460 | } |
| 3461 | |
| 3462 | |
| 3463 | /* Allocate 2 bytes of memory for camera control USB transfers */ |
Oliver Neukum | b10b417 | 2006-01-06 21:28:40 +0100 | [diff] [blame] | 3464 | if (!(cam->control_buffer = kzalloc(2, GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3465 | DBG(1,"Couldn't allocate memory for camera control transfers") |
| 3466 | err = -ENOMEM; |
| 3467 | goto fail; |
| 3468 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3469 | |
| 3470 | /* Allocate 8 bytes of memory for USB data transfers to the FSB */ |
Oliver Neukum | b10b417 | 2006-01-06 21:28:40 +0100 | [diff] [blame] | 3471 | if (!(cam->data_buffer = kzalloc(8, GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3472 | DBG(1, "Couldn't allocate memory for data " |
| 3473 | "transfers to the FSB") |
| 3474 | err = -ENOMEM; |
| 3475 | goto fail; |
| 3476 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3477 | |
| 3478 | /* Register the V4L device */ |
| 3479 | cam->v4ldev = video_device_alloc(); |
| 3480 | if (!cam->v4ldev) { |
| 3481 | DBG(1, "Could not allocate memory for a V4L structure") |
| 3482 | err = -ENOMEM; |
| 3483 | goto fail; |
| 3484 | } |
| 3485 | |
| 3486 | strcpy(cam->v4ldev->name, symbolic(camlist, mod_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3487 | cam->v4ldev->fops = &w9968cf_fops; |
| 3488 | cam->v4ldev->minor = video_nr[dev_nr]; |
| 3489 | cam->v4ldev->release = video_device_release; |
| 3490 | video_set_drvdata(cam->v4ldev, cam); |
Hans Verkuil | 4e06839 | 2009-03-08 06:56:19 -0300 | [diff] [blame] | 3491 | cam->v4ldev->v4l2_dev = &cam->v4l2_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3492 | |
| 3493 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3494 | video_nr[dev_nr]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3495 | if (err) { |
| 3496 | DBG(1, "V4L device registration failed") |
| 3497 | if (err == -ENFILE && video_nr[dev_nr] == -1) |
| 3498 | DBG(2, "Couldn't find a free /dev/videoX node") |
| 3499 | video_nr[dev_nr] = -1; |
| 3500 | dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0; |
| 3501 | goto fail; |
| 3502 | } |
| 3503 | |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 3504 | DBG(2, "V4L device registered as /dev/video%d", cam->v4ldev->num) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3505 | |
| 3506 | /* Set some basic constants */ |
| 3507 | w9968cf_configure_camera(cam, udev, mod_id, dev_nr); |
| 3508 | |
| 3509 | /* Add a new entry into the list of V4L registered devices */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3510 | mutex_lock(&w9968cf_devlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3511 | list_add(&cam->v4llist, &w9968cf_dev_list); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3512 | mutex_unlock(&w9968cf_devlist_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3513 | dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0; |
| 3514 | |
| 3515 | w9968cf_turn_on_led(cam); |
| 3516 | |
| 3517 | w9968cf_i2c_init(cam); |
Hans Verkuil | 53dacb1 | 2009-08-10 02:49:08 -0300 | [diff] [blame] | 3518 | cam->sensor_sd = v4l2_i2c_new_subdev(&cam->v4l2_dev, |
Hans Verkuil | e6574f2 | 2009-04-01 03:57:53 -0300 | [diff] [blame] | 3519 | &cam->i2c_adapter, |
Hans Verkuil | 53dacb1 | 2009-08-10 02:49:08 -0300 | [diff] [blame] | 3520 | "ovcamchip", "ovcamchip", 0, addrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3521 | |
| 3522 | usb_set_intfdata(intf, cam); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3523 | mutex_unlock(&cam->dev_mutex); |
Hans Verkuil | 4e06839 | 2009-03-08 06:56:19 -0300 | [diff] [blame] | 3524 | |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 3525 | err = w9968cf_sensor_init(cam); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3526 | return 0; |
| 3527 | |
| 3528 | fail: /* Free unused memory */ |
Jesper Juhl | 1bc3c9e | 2005-04-18 17:39:34 -0700 | [diff] [blame] | 3529 | kfree(cam->control_buffer); |
| 3530 | kfree(cam->data_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3531 | if (cam->v4ldev) |
| 3532 | video_device_release(cam->v4ldev); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3533 | mutex_unlock(&cam->dev_mutex); |
Hans Verkuil | 4e06839 | 2009-03-08 06:56:19 -0300 | [diff] [blame] | 3534 | v4l2_device_unregister(&cam->v4l2_dev); |
| 3535 | fail0: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3536 | kfree(cam); |
| 3537 | return err; |
| 3538 | } |
| 3539 | |
| 3540 | |
| 3541 | static void w9968cf_usb_disconnect(struct usb_interface* intf) |
| 3542 | { |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 3543 | struct w9968cf_device* cam = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3544 | (struct w9968cf_device*)usb_get_intfdata(intf); |
| 3545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3546 | if (cam) { |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 3547 | down_write(&w9968cf_disconnect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3548 | /* Prevent concurrent accesses to data */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3549 | mutex_lock(&cam->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3550 | |
| 3551 | cam->disconnected = 1; |
| 3552 | |
Hans Verkuil | f1ba28c | 2009-03-14 12:27:01 -0300 | [diff] [blame] | 3553 | DBG(2, "Disconnecting %s...", symbolic(camlist, cam->id)); |
| 3554 | |
| 3555 | v4l2_device_disconnect(&cam->v4l2_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3556 | |
| 3557 | wake_up_interruptible_all(&cam->open); |
| 3558 | |
| 3559 | if (cam->users) { |
| 3560 | DBG(2, "The device is open (/dev/video%d)! " |
| 3561 | "Process name: %s. Deregistration and memory " |
| 3562 | "deallocation are deferred on close.", |
Hans Verkuil | c6330fb | 2008-10-19 18:54:26 -0300 | [diff] [blame] | 3563 | cam->v4ldev->num, cam->command) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3564 | cam->misconfigured = 1; |
| 3565 | w9968cf_stop_transfer(cam); |
| 3566 | wake_up_interruptible(&cam->wait_queue); |
| 3567 | } else |
| 3568 | w9968cf_release_resources(cam); |
| 3569 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 3570 | mutex_unlock(&cam->dev_mutex); |
Hans Verkuil | 3160fbc | 2009-03-08 10:19:44 -0300 | [diff] [blame] | 3571 | up_write(&w9968cf_disconnect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3572 | |
Hans Verkuil | 4e06839 | 2009-03-08 06:56:19 -0300 | [diff] [blame] | 3573 | if (!cam->users) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3574 | kfree(cam); |
Hans Verkuil | 4e06839 | 2009-03-08 06:56:19 -0300 | [diff] [blame] | 3575 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3576 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3577 | } |
| 3578 | |
| 3579 | |
| 3580 | static struct usb_driver w9968cf_usb_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3581 | .name = "w9968cf", |
| 3582 | .id_table = winbond_id_table, |
| 3583 | .probe = w9968cf_usb_probe, |
| 3584 | .disconnect = w9968cf_usb_disconnect, |
| 3585 | }; |
| 3586 | |
| 3587 | |
| 3588 | |
| 3589 | /**************************************************************************** |
| 3590 | * Module init, exit and intermodule communication * |
| 3591 | ****************************************************************************/ |
| 3592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3593 | static int __init w9968cf_module_init(void) |
| 3594 | { |
| 3595 | int err; |
| 3596 | |
| 3597 | KDBG(2, W9968CF_MODULE_NAME" "W9968CF_MODULE_VERSION) |
| 3598 | KDBG(3, W9968CF_MODULE_AUTHOR) |
| 3599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3600 | if ((err = usb_register(&w9968cf_usb_driver))) |
| 3601 | return err; |
| 3602 | |
| 3603 | return 0; |
| 3604 | } |
| 3605 | |
| 3606 | |
| 3607 | static void __exit w9968cf_module_exit(void) |
| 3608 | { |
| 3609 | /* w9968cf_usb_disconnect() will be called */ |
| 3610 | usb_deregister(&w9968cf_usb_driver); |
| 3611 | |
| 3612 | KDBG(2, W9968CF_MODULE_NAME" deregistered") |
| 3613 | } |
| 3614 | |
| 3615 | |
| 3616 | module_init(w9968cf_module_init); |
| 3617 | module_exit(w9968cf_module_exit); |
| 3618 | |