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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
45 | #include <linux/moduleparam.h> | |
46 | ||
47 | #include "w9968cf.h" | |
48 | #include "w9968cf_decoder.h" | |
49 | ||
50 | ||
51 | ||
52 | /**************************************************************************** | |
53 | * Module macros and parameters * | |
54 | ****************************************************************************/ | |
55 | ||
56 | MODULE_DEVICE_TABLE(usb, winbond_id_table); | |
57 | ||
58 | MODULE_AUTHOR(W9968CF_MODULE_AUTHOR" "W9968CF_AUTHOR_EMAIL); | |
59 | MODULE_DESCRIPTION(W9968CF_MODULE_NAME); | |
60 | MODULE_VERSION(W9968CF_MODULE_VERSION); | |
61 | MODULE_LICENSE(W9968CF_MODULE_LICENSE); | |
62 | MODULE_SUPPORTED_DEVICE("Video"); | |
63 | ||
64 | static int ovmod_load = W9968CF_OVMOD_LOAD; | |
65 | static int vppmod_load = W9968CF_VPPMOD_LOAD; | |
66 | static unsigned short simcams = W9968CF_SIMCAMS; | |
67 | static short video_nr[]={[0 ... W9968CF_MAX_DEVICES-1] = -1}; /*-1=first free*/ | |
68 | static unsigned int packet_size[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
69 | W9968CF_PACKET_SIZE}; | |
70 | static unsigned short max_buffers[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
71 | W9968CF_BUFFERS}; | |
72 | static int double_buffer[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
73 | W9968CF_DOUBLE_BUFFER}; | |
74 | static int clamping[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_CLAMPING}; | |
75 | static unsigned short filter_type[]= {[0 ... W9968CF_MAX_DEVICES-1] = | |
76 | W9968CF_FILTER_TYPE}; | |
77 | static int largeview[]= {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_LARGEVIEW}; | |
78 | static unsigned short decompression[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
79 | W9968CF_DECOMPRESSION}; | |
80 | static int upscaling[]= {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_UPSCALING}; | |
81 | static unsigned short force_palette[] = {[0 ... W9968CF_MAX_DEVICES-1] = 0}; | |
82 | static int force_rgb[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_FORCE_RGB}; | |
83 | static int autobright[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_AUTOBRIGHT}; | |
84 | static int autoexp[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_AUTOEXP}; | |
85 | static unsigned short lightfreq[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
86 | W9968CF_LIGHTFREQ}; | |
87 | static int bandingfilter[] = {[0 ... W9968CF_MAX_DEVICES-1]= | |
88 | W9968CF_BANDINGFILTER}; | |
89 | static short clockdiv[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_CLOCKDIV}; | |
90 | static int backlight[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_BACKLIGHT}; | |
91 | static int mirror[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_MIRROR}; | |
92 | static int monochrome[] = {[0 ... W9968CF_MAX_DEVICES-1]=W9968CF_MONOCHROME}; | |
93 | static unsigned int brightness[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
94 | W9968CF_BRIGHTNESS}; | |
95 | static unsigned int hue[] = {[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_HUE}; | |
96 | static unsigned int colour[]={[0 ... W9968CF_MAX_DEVICES-1] = W9968CF_COLOUR}; | |
97 | static unsigned int contrast[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
98 | W9968CF_CONTRAST}; | |
99 | static unsigned int whiteness[] = {[0 ... W9968CF_MAX_DEVICES-1] = | |
100 | W9968CF_WHITENESS}; | |
101 | #ifdef W9968CF_DEBUG | |
102 | static unsigned short debug = W9968CF_DEBUG_LEVEL; | |
103 | static int specific_debug = W9968CF_SPECIFIC_DEBUG; | |
104 | #endif | |
105 | ||
106 | static unsigned int param_nv[24]; /* number of values per parameter */ | |
107 | ||
108 | #ifdef CONFIG_KMOD | |
109 | module_param(ovmod_load, bool, 0644); | |
110 | module_param(vppmod_load, bool, 0444); | |
111 | #endif | |
112 | module_param(simcams, ushort, 0644); | |
113 | module_param_array(video_nr, short, ¶m_nv[0], 0444); | |
114 | module_param_array(packet_size, uint, ¶m_nv[1], 0444); | |
115 | module_param_array(max_buffers, ushort, ¶m_nv[2], 0444); | |
116 | module_param_array(double_buffer, bool, ¶m_nv[3], 0444); | |
117 | module_param_array(clamping, bool, ¶m_nv[4], 0444); | |
118 | module_param_array(filter_type, ushort, ¶m_nv[5], 0444); | |
119 | module_param_array(largeview, bool, ¶m_nv[6], 0444); | |
120 | module_param_array(decompression, ushort, ¶m_nv[7], 0444); | |
121 | module_param_array(upscaling, bool, ¶m_nv[8], 0444); | |
122 | module_param_array(force_palette, ushort, ¶m_nv[9], 0444); | |
123 | module_param_array(force_rgb, ushort, ¶m_nv[10], 0444); | |
124 | module_param_array(autobright, bool, ¶m_nv[11], 0444); | |
125 | module_param_array(autoexp, bool, ¶m_nv[12], 0444); | |
126 | module_param_array(lightfreq, ushort, ¶m_nv[13], 0444); | |
127 | module_param_array(bandingfilter, bool, ¶m_nv[14], 0444); | |
128 | module_param_array(clockdiv, short, ¶m_nv[15], 0444); | |
129 | module_param_array(backlight, bool, ¶m_nv[16], 0444); | |
130 | module_param_array(mirror, bool, ¶m_nv[17], 0444); | |
131 | module_param_array(monochrome, bool, ¶m_nv[18], 0444); | |
132 | module_param_array(brightness, uint, ¶m_nv[19], 0444); | |
133 | module_param_array(hue, uint, ¶m_nv[20], 0444); | |
134 | module_param_array(colour, uint, ¶m_nv[21], 0444); | |
135 | module_param_array(contrast, uint, ¶m_nv[22], 0444); | |
136 | module_param_array(whiteness, uint, ¶m_nv[23], 0444); | |
137 | #ifdef W9968CF_DEBUG | |
138 | module_param(debug, ushort, 0644); | |
139 | module_param(specific_debug, bool, 0644); | |
140 | #endif | |
141 | ||
142 | #ifdef CONFIG_KMOD | |
143 | MODULE_PARM_DESC(ovmod_load, | |
144 | "\n<0|1> Automatic 'ovcamchip' module loading." | |
145 | "\n0 disabled, 1 enabled." | |
146 | "\nIf enabled,'insmod' searches for the required 'ovcamchip'" | |
147 | "\nmodule in the system, according to its configuration, and" | |
148 | "\nattempts to load that module automatically. This action is" | |
149 | "\nperformed once as soon as the 'w9968cf' module is loaded" | |
150 | "\ninto memory." | |
151 | "\nDefault value is "__MODULE_STRING(W9968CF_OVMOD_LOAD)"." | |
152 | "\n"); | |
153 | MODULE_PARM_DESC(vppmod_load, | |
154 | "\n<0|1> Automatic 'w9968cf-vpp' module loading." | |
155 | "\n0 disabled, 1 enabled." | |
156 | "\nIf enabled, every time an application attempts to open a" | |
157 | "\ncamera, 'insmod' searches for the video post-processing" | |
158 | "\nmodule in the system and loads it automatically (if" | |
159 | "\npresent). The optional 'w9968cf-vpp' module adds extra" | |
160 | "\n image manipulation functions to the 'w9968cf' module,like" | |
161 | "\nsoftware up-scaling,colour conversions and video decoding" | |
162 | "\nfor very high frame rates." | |
163 | "\nDefault value is "__MODULE_STRING(W9968CF_VPPMOD_LOAD)"." | |
164 | "\n"); | |
165 | #endif | |
166 | MODULE_PARM_DESC(simcams, | |
167 | "\n<n> Number of cameras allowed to stream simultaneously." | |
168 | "\nn may vary from 0 to " | |
169 | __MODULE_STRING(W9968CF_MAX_DEVICES)"." | |
170 | "\nDefault value is "__MODULE_STRING(W9968CF_SIMCAMS)"." | |
171 | "\n"); | |
172 | MODULE_PARM_DESC(video_nr, | |
173 | "\n<-1|n[,...]> Specify V4L minor mode number." | |
174 | "\n -1 = use next available (default)" | |
175 | "\n n = use minor number n (integer >= 0)" | |
176 | "\nYou can specify up to "__MODULE_STRING(W9968CF_MAX_DEVICES) | |
177 | " cameras this way." | |
178 | "\nFor example:" | |
179 | "\nvideo_nr=-1,2,-1 would assign minor number 2 to" | |
180 | "\nthe second camera and use auto for the first" | |
181 | "\none and for every other camera." | |
182 | "\n"); | |
183 | MODULE_PARM_DESC(packet_size, | |
184 | "\n<n[,...]> Specify the maximum data payload" | |
185 | "\nsize in bytes for alternate settings, for each device." | |
186 | "\nn is scaled between 63 and 1023 " | |
187 | "(default is "__MODULE_STRING(W9968CF_PACKET_SIZE)")." | |
188 | "\n"); | |
189 | MODULE_PARM_DESC(max_buffers, | |
190 | "\n<n[,...]> For advanced users." | |
191 | "\nSpecify the maximum number of video frame buffers" | |
192 | "\nto allocate for each device, from 2 to " | |
193 | __MODULE_STRING(W9968CF_MAX_BUFFERS) | |
194 | ". (default is "__MODULE_STRING(W9968CF_BUFFERS)")." | |
195 | "\n"); | |
196 | MODULE_PARM_DESC(double_buffer, | |
197 | "\n<0|1[,...]> " | |
198 | "Hardware double buffering: 0 disabled, 1 enabled." | |
199 | "\nIt should be enabled if you want smooth video output: if" | |
200 | "\nyou obtain out of sync. video, disable it, or try to" | |
201 | "\ndecrease the 'clockdiv' module parameter value." | |
202 | "\nDefault value is "__MODULE_STRING(W9968CF_DOUBLE_BUFFER) | |
203 | " for every device." | |
204 | "\n"); | |
205 | MODULE_PARM_DESC(clamping, | |
206 | "\n<0|1[,...]> Video data clamping: 0 disabled, 1 enabled." | |
207 | "\nDefault value is "__MODULE_STRING(W9968CF_CLAMPING) | |
208 | " for every device." | |
209 | "\n"); | |
210 | MODULE_PARM_DESC(filter_type, | |
211 | "\n<0|1|2[,...]> Video filter type." | |
212 | "\n0 none, 1 (1-2-1) 3-tap filter, " | |
213 | "2 (2-3-6-3-2) 5-tap filter." | |
214 | "\nDefault value is "__MODULE_STRING(W9968CF_FILTER_TYPE) | |
215 | " for every device." | |
216 | "\nThe filter is used to reduce noise and aliasing artifacts" | |
217 | "\nproduced by the CCD or CMOS image sensor, and the scaling" | |
218 | " process." | |
219 | "\n"); | |
220 | MODULE_PARM_DESC(largeview, | |
221 | "\n<0|1[,...]> Large view: 0 disabled, 1 enabled." | |
222 | "\nDefault value is "__MODULE_STRING(W9968CF_LARGEVIEW) | |
223 | " for every device." | |
224 | "\n"); | |
225 | MODULE_PARM_DESC(upscaling, | |
226 | "\n<0|1[,...]> Software scaling (for non-compressed video):" | |
227 | "\n0 disabled, 1 enabled." | |
228 | "\nDisable it if you have a slow CPU or you don't have" | |
229 | " enough memory." | |
230 | "\nDefault value is "__MODULE_STRING(W9968CF_UPSCALING) | |
231 | " for every device." | |
232 | "\nIf 'w9968cf-vpp' is not present, this parameter is" | |
233 | " set to 0." | |
234 | "\n"); | |
235 | MODULE_PARM_DESC(decompression, | |
236 | "\n<0|1|2[,...]> Software video decompression:" | |
237 | "\n- 0 disables decompression (doesn't allow formats needing" | |
238 | " decompression)" | |
239 | "\n- 1 forces decompression (allows formats needing" | |
240 | " decompression only);" | |
241 | "\n- 2 allows any permitted formats." | |
242 | "\nFormats supporting compressed video are YUV422P and" | |
243 | " YUV420P/YUV420 " | |
244 | "\nin any resolutions where both width and height are " | |
245 | "a multiple of 16." | |
246 | "\nDefault value is "__MODULE_STRING(W9968CF_DECOMPRESSION) | |
247 | " for every device." | |
248 | "\nIf 'w9968cf-vpp' is not present, forcing decompression is " | |
249 | "\nnot allowed; in this case this parameter is set to 2." | |
250 | "\n"); | |
251 | MODULE_PARM_DESC(force_palette, | |
252 | "\n<0" | |
253 | "|" __MODULE_STRING(VIDEO_PALETTE_UYVY) | |
254 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV420) | |
255 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV422P) | |
256 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV420P) | |
257 | "|" __MODULE_STRING(VIDEO_PALETTE_YUYV) | |
258 | "|" __MODULE_STRING(VIDEO_PALETTE_YUV422) | |
259 | "|" __MODULE_STRING(VIDEO_PALETTE_GREY) | |
260 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB555) | |
261 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB565) | |
262 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB24) | |
263 | "|" __MODULE_STRING(VIDEO_PALETTE_RGB32) | |
264 | "[,...]>" | |
265 | " Force picture palette." | |
266 | "\nIn order:" | |
267 | "\n- 0 allows any of the following formats:" | |
268 | "\n- UYVY 16 bpp - Original video, compression disabled" | |
269 | "\n- YUV420 12 bpp - Original video, compression enabled" | |
270 | "\n- YUV422P 16 bpp - Original video, compression enabled" | |
271 | "\n- YUV420P 12 bpp - Original video, compression enabled" | |
272 | "\n- YUVY 16 bpp - Software conversion from UYVY" | |
273 | "\n- YUV422 16 bpp - Software conversion from UYVY" | |
274 | "\n- GREY 8 bpp - Software conversion from UYVY" | |
275 | "\n- RGB555 16 bpp - Software conversion from UYVY" | |
276 | "\n- RGB565 16 bpp - Software conversion from UYVY" | |
277 | "\n- RGB24 24 bpp - Software conversion from UYVY" | |
278 | "\n- RGB32 32 bpp - Software conversion from UYVY" | |
279 | "\nWhen not 0, this parameter will override 'decompression'." | |
280 | "\nDefault value is 0 for every device." | |
281 | "\nInitial palette is " | |
282 | __MODULE_STRING(W9968CF_PALETTE_DECOMP_ON)"." | |
283 | "\nIf 'w9968cf-vpp' is not present, this parameter is" | |
284 | " set to 9 (UYVY)." | |
285 | "\n"); | |
286 | MODULE_PARM_DESC(force_rgb, | |
287 | "\n<0|1[,...]> Read RGB video data instead of BGR:" | |
288 | "\n 1 = use RGB component ordering." | |
289 | "\n 0 = use BGR component ordering." | |
290 | "\nThis parameter has effect when using RGBX palettes only." | |
291 | "\nDefault value is "__MODULE_STRING(W9968CF_FORCE_RGB) | |
292 | " for every device." | |
293 | "\n"); | |
294 | MODULE_PARM_DESC(autobright, | |
295 | "\n<0|1[,...]> Image sensor automatically changes brightness:" | |
296 | "\n 0 = no, 1 = yes" | |
297 | "\nDefault value is "__MODULE_STRING(W9968CF_AUTOBRIGHT) | |
298 | " for every device." | |
299 | "\n"); | |
300 | MODULE_PARM_DESC(autoexp, | |
301 | "\n<0|1[,...]> Image sensor automatically changes exposure:" | |
302 | "\n 0 = no, 1 = yes" | |
303 | "\nDefault value is "__MODULE_STRING(W9968CF_AUTOEXP) | |
304 | " for every device." | |
305 | "\n"); | |
306 | MODULE_PARM_DESC(lightfreq, | |
307 | "\n<50|60[,...]> Light frequency in Hz:" | |
308 | "\n 50 for European and Asian lighting," | |
309 | " 60 for American lighting." | |
310 | "\nDefault value is "__MODULE_STRING(W9968CF_LIGHTFREQ) | |
311 | " for every device." | |
312 | "\n"); | |
313 | MODULE_PARM_DESC(bandingfilter, | |
314 | "\n<0|1[,...]> Banding filter to reduce effects of" | |
315 | " fluorescent lighting:" | |
316 | "\n 0 disabled, 1 enabled." | |
317 | "\nThis filter tries to reduce the pattern of horizontal" | |
318 | "\nlight/dark bands caused by some (usually fluorescent)" | |
319 | " lighting." | |
320 | "\nDefault value is "__MODULE_STRING(W9968CF_BANDINGFILTER) | |
321 | " for every device." | |
322 | "\n"); | |
323 | MODULE_PARM_DESC(clockdiv, | |
324 | "\n<-1|n[,...]> " | |
325 | "Force pixel clock divisor to a specific value (for experts):" | |
326 | "\n n may vary from 0 to 127." | |
327 | "\n -1 for automatic value." | |
328 | "\nSee also the 'double_buffer' module parameter." | |
329 | "\nDefault value is "__MODULE_STRING(W9968CF_CLOCKDIV) | |
330 | " for every device." | |
331 | "\n"); | |
332 | MODULE_PARM_DESC(backlight, | |
333 | "\n<0|1[,...]> Objects are lit from behind:" | |
334 | "\n 0 = no, 1 = yes" | |
335 | "\nDefault value is "__MODULE_STRING(W9968CF_BACKLIGHT) | |
336 | " for every device." | |
337 | "\n"); | |
338 | MODULE_PARM_DESC(mirror, | |
339 | "\n<0|1[,...]> Reverse image horizontally:" | |
340 | "\n 0 = no, 1 = yes" | |
341 | "\nDefault value is "__MODULE_STRING(W9968CF_MIRROR) | |
342 | " for every device." | |
343 | "\n"); | |
344 | MODULE_PARM_DESC(monochrome, | |
345 | "\n<0|1[,...]> Use image sensor as monochrome sensor:" | |
346 | "\n 0 = no, 1 = yes" | |
347 | "\nNot all the sensors support monochrome color." | |
348 | "\nDefault value is "__MODULE_STRING(W9968CF_MONOCHROME) | |
349 | " for every device." | |
350 | "\n"); | |
351 | MODULE_PARM_DESC(brightness, | |
352 | "\n<n[,...]> Set picture brightness (0-65535)." | |
353 | "\nDefault value is "__MODULE_STRING(W9968CF_BRIGHTNESS) | |
354 | " for every device." | |
355 | "\nThis parameter has no effect if 'autobright' is enabled." | |
356 | "\n"); | |
357 | MODULE_PARM_DESC(hue, | |
358 | "\n<n[,...]> Set picture hue (0-65535)." | |
359 | "\nDefault value is "__MODULE_STRING(W9968CF_HUE) | |
360 | " for every device." | |
361 | "\n"); | |
362 | MODULE_PARM_DESC(colour, | |
363 | "\n<n[,...]> Set picture saturation (0-65535)." | |
364 | "\nDefault value is "__MODULE_STRING(W9968CF_COLOUR) | |
365 | " for every device." | |
366 | "\n"); | |
367 | MODULE_PARM_DESC(contrast, | |
368 | "\n<n[,...]> Set picture contrast (0-65535)." | |
369 | "\nDefault value is "__MODULE_STRING(W9968CF_CONTRAST) | |
370 | " for every device." | |
371 | "\n"); | |
372 | MODULE_PARM_DESC(whiteness, | |
373 | "\n<n[,...]> Set picture whiteness (0-65535)." | |
374 | "\nDefault value is "__MODULE_STRING(W9968CF_WHITENESS) | |
375 | " for every device." | |
376 | "\n"); | |
377 | #ifdef W9968CF_DEBUG | |
378 | MODULE_PARM_DESC(debug, | |
379 | "\n<n> Debugging information level, from 0 to 6:" | |
380 | "\n0 = none (use carefully)" | |
381 | "\n1 = critical errors" | |
382 | "\n2 = significant informations" | |
383 | "\n3 = configuration or general messages" | |
384 | "\n4 = warnings" | |
385 | "\n5 = called functions" | |
386 | "\n6 = function internals" | |
387 | "\nLevel 5 and 6 are useful for testing only, when only " | |
388 | "one device is used." | |
389 | "\nDefault value is "__MODULE_STRING(W9968CF_DEBUG_LEVEL)"." | |
390 | "\n"); | |
391 | MODULE_PARM_DESC(specific_debug, | |
392 | "\n<0|1> Enable or disable specific debugging messages:" | |
393 | "\n0 = print messages concerning every level" | |
394 | " <= 'debug' level." | |
395 | "\n1 = print messages concerning the level" | |
396 | " indicated by 'debug'." | |
397 | "\nDefault value is " | |
398 | __MODULE_STRING(W9968CF_SPECIFIC_DEBUG)"." | |
399 | "\n"); | |
400 | #endif /* W9968CF_DEBUG */ | |
401 | ||
402 | ||
403 | ||
404 | /**************************************************************************** | |
405 | * Some prototypes * | |
406 | ****************************************************************************/ | |
407 | ||
408 | /* Video4linux interface */ | |
409 | static struct file_operations w9968cf_fops; | |
410 | static int w9968cf_open(struct inode*, struct file*); | |
411 | static int w9968cf_release(struct inode*, struct file*); | |
412 | static int w9968cf_mmap(struct file*, struct vm_area_struct*); | |
413 | static int w9968cf_ioctl(struct inode*, struct file*, unsigned, unsigned long); | |
414 | static ssize_t w9968cf_read(struct file*, char __user *, size_t, loff_t*); | |
415 | static int w9968cf_v4l_ioctl(struct inode*, struct file*, unsigned int, | |
416 | void __user *); | |
417 | ||
418 | /* USB-specific */ | |
419 | static int w9968cf_start_transfer(struct w9968cf_device*); | |
420 | static int w9968cf_stop_transfer(struct w9968cf_device*); | |
421 | static int w9968cf_write_reg(struct w9968cf_device*, u16 value, u16 index); | |
422 | static int w9968cf_read_reg(struct w9968cf_device*, u16 index); | |
423 | static int w9968cf_write_fsb(struct w9968cf_device*, u16* data); | |
424 | static int w9968cf_write_sb(struct w9968cf_device*, u16 value); | |
425 | static int w9968cf_read_sb(struct w9968cf_device*); | |
426 | static int w9968cf_upload_quantizationtables(struct w9968cf_device*); | |
427 | static void w9968cf_urb_complete(struct urb *urb, struct pt_regs *regs); | |
428 | ||
429 | /* Low-level I2C (SMBus) I/O */ | |
430 | static int w9968cf_smbus_start(struct w9968cf_device*); | |
431 | static int w9968cf_smbus_stop(struct w9968cf_device*); | |
432 | static int w9968cf_smbus_write_byte(struct w9968cf_device*, u8 v); | |
433 | static int w9968cf_smbus_read_byte(struct w9968cf_device*, u8* v); | |
434 | static int w9968cf_smbus_write_ack(struct w9968cf_device*); | |
435 | static int w9968cf_smbus_read_ack(struct w9968cf_device*); | |
436 | static int w9968cf_smbus_refresh_bus(struct w9968cf_device*); | |
437 | static int w9968cf_i2c_adap_read_byte(struct w9968cf_device* cam, | |
438 | u16 address, u8* value); | |
439 | static int w9968cf_i2c_adap_read_byte_data(struct w9968cf_device*, u16 address, | |
440 | u8 subaddress, u8* value); | |
441 | static int w9968cf_i2c_adap_write_byte(struct w9968cf_device*, | |
442 | u16 address, u8 subaddress); | |
443 | static int w9968cf_i2c_adap_fastwrite_byte_data(struct w9968cf_device*, | |
444 | u16 address, u8 subaddress, | |
445 | u8 value); | |
446 | ||
447 | /* I2C interface to kernel */ | |
448 | static int w9968cf_i2c_init(struct w9968cf_device*); | |
449 | static int w9968cf_i2c_smbus_xfer(struct i2c_adapter*, u16 addr, | |
450 | unsigned short flags, char read_write, | |
451 | u8 command, int size, union i2c_smbus_data*); | |
452 | static u32 w9968cf_i2c_func(struct i2c_adapter*); | |
453 | static int w9968cf_i2c_attach_inform(struct i2c_client*); | |
454 | static int w9968cf_i2c_detach_inform(struct i2c_client*); | |
455 | static int w9968cf_i2c_control(struct i2c_adapter*, unsigned int cmd, | |
456 | unsigned long arg); | |
457 | ||
458 | /* Memory management */ | |
459 | static void* rvmalloc(unsigned long size); | |
460 | static void rvfree(void *mem, unsigned long size); | |
461 | static void w9968cf_deallocate_memory(struct w9968cf_device*); | |
462 | static int w9968cf_allocate_memory(struct w9968cf_device*); | |
463 | ||
464 | /* High-level image sensor control functions */ | |
465 | static int w9968cf_sensor_set_control(struct w9968cf_device*,int cid,int val); | |
466 | static int w9968cf_sensor_get_control(struct w9968cf_device*,int cid,int *val); | |
467 | static int w9968cf_sensor_cmd(struct w9968cf_device*, | |
468 | unsigned int cmd, void *arg); | |
469 | static int w9968cf_sensor_init(struct w9968cf_device*); | |
470 | static int w9968cf_sensor_update_settings(struct w9968cf_device*); | |
471 | static int w9968cf_sensor_get_picture(struct w9968cf_device*); | |
472 | static int w9968cf_sensor_update_picture(struct w9968cf_device*, | |
473 | struct video_picture pict); | |
474 | ||
475 | /* Other helper functions */ | |
476 | static void w9968cf_configure_camera(struct w9968cf_device*,struct usb_device*, | |
477 | enum w9968cf_model_id, | |
478 | const unsigned short dev_nr); | |
479 | static void w9968cf_adjust_configuration(struct w9968cf_device*); | |
480 | static int w9968cf_turn_on_led(struct w9968cf_device*); | |
481 | static int w9968cf_init_chip(struct w9968cf_device*); | |
482 | static inline u16 w9968cf_valid_palette(u16 palette); | |
483 | static inline u16 w9968cf_valid_depth(u16 palette); | |
484 | static inline u8 w9968cf_need_decompression(u16 palette); | |
485 | static int w9968cf_set_picture(struct w9968cf_device*, struct video_picture); | |
486 | static int w9968cf_set_window(struct w9968cf_device*, struct video_window); | |
487 | static int w9968cf_postprocess_frame(struct w9968cf_device*, | |
488 | struct w9968cf_frame_t*); | |
489 | static int w9968cf_adjust_window_size(struct w9968cf_device*, u16* w, u16* h); | |
490 | static void w9968cf_init_framelist(struct w9968cf_device*); | |
491 | static void w9968cf_push_frame(struct w9968cf_device*, u8 f_num); | |
492 | static void w9968cf_pop_frame(struct w9968cf_device*,struct w9968cf_frame_t**); | |
493 | static void w9968cf_release_resources(struct w9968cf_device*); | |
494 | ||
495 | /* Intermodule communication */ | |
496 | static int w9968cf_vppmod_detect(struct w9968cf_device*); | |
497 | static void w9968cf_vppmod_release(struct w9968cf_device*); | |
498 | ||
499 | ||
500 | ||
501 | /**************************************************************************** | |
502 | * Symbolic names * | |
503 | ****************************************************************************/ | |
504 | ||
505 | /* Used to represent a list of values and their respective symbolic names */ | |
506 | struct w9968cf_symbolic_list { | |
507 | const int num; | |
508 | const char *name; | |
509 | }; | |
510 | ||
511 | /*-------------------------------------------------------------------------- | |
512 | Returns the name of the matching element in the symbolic_list array. The | |
513 | end of the list must be marked with an element that has a NULL name. | |
514 | --------------------------------------------------------------------------*/ | |
515 | static inline const char * | |
516 | symbolic(struct w9968cf_symbolic_list list[], const int num) | |
517 | { | |
518 | int i; | |
519 | ||
520 | for (i = 0; list[i].name != NULL; i++) | |
521 | if (list[i].num == num) | |
522 | return (list[i].name); | |
523 | ||
524 | return "Unknown"; | |
525 | } | |
526 | ||
527 | static struct w9968cf_symbolic_list camlist[] = { | |
528 | { W9968CF_MOD_GENERIC, "W996[87]CF JPEG USB Dual Mode Camera" }, | |
529 | { W9968CF_MOD_CLVBWGP, "Creative Labs Video Blaster WebCam Go Plus" }, | |
530 | ||
531 | /* Other cameras (having the same descriptors as Generic W996[87]CF) */ | |
532 | { W9968CF_MOD_ADPVDMA, "Aroma Digi Pen VGA Dual Mode ADG-5000" }, | |
533 | { W9986CF_MOD_AAU, "AVerMedia AVerTV USB" }, | |
534 | { W9968CF_MOD_CLVBWG, "Creative Labs Video Blaster WebCam Go" }, | |
535 | { W9968CF_MOD_LL, "Lebon LDC-035A" }, | |
536 | { W9968CF_MOD_EEEMC, "Ezonics EZ-802 EZMega Cam" }, | |
537 | { W9968CF_MOD_OOE, "OmniVision OV8610-EDE" }, | |
538 | { W9968CF_MOD_ODPVDMPC, "OPCOM Digi Pen VGA Dual Mode Pen Camera" }, | |
539 | { W9968CF_MOD_PDPII, "Pretec Digi Pen-II" }, | |
540 | { W9968CF_MOD_PDP480, "Pretec DigiPen-480" }, | |
541 | ||
542 | { -1, NULL } | |
543 | }; | |
544 | ||
545 | static struct w9968cf_symbolic_list senlist[] = { | |
546 | { CC_OV76BE, "OV76BE" }, | |
547 | { CC_OV7610, "OV7610" }, | |
548 | { CC_OV7620, "OV7620" }, | |
549 | { CC_OV7620AE, "OV7620AE" }, | |
550 | { CC_OV6620, "OV6620" }, | |
551 | { CC_OV6630, "OV6630" }, | |
552 | { CC_OV6630AE, "OV6630AE" }, | |
553 | { CC_OV6630AF, "OV6630AF" }, | |
554 | { -1, NULL } | |
555 | }; | |
556 | ||
557 | /* Video4Linux1 palettes */ | |
558 | static struct w9968cf_symbolic_list v4l1_plist[] = { | |
559 | { VIDEO_PALETTE_GREY, "GREY" }, | |
560 | { VIDEO_PALETTE_HI240, "HI240" }, | |
561 | { VIDEO_PALETTE_RGB565, "RGB565" }, | |
562 | { VIDEO_PALETTE_RGB24, "RGB24" }, | |
563 | { VIDEO_PALETTE_RGB32, "RGB32" }, | |
564 | { VIDEO_PALETTE_RGB555, "RGB555" }, | |
565 | { VIDEO_PALETTE_YUV422, "YUV422" }, | |
566 | { VIDEO_PALETTE_YUYV, "YUYV" }, | |
567 | { VIDEO_PALETTE_UYVY, "UYVY" }, | |
568 | { VIDEO_PALETTE_YUV420, "YUV420" }, | |
569 | { VIDEO_PALETTE_YUV411, "YUV411" }, | |
570 | { VIDEO_PALETTE_RAW, "RAW" }, | |
571 | { VIDEO_PALETTE_YUV422P, "YUV422P" }, | |
572 | { VIDEO_PALETTE_YUV411P, "YUV411P" }, | |
573 | { VIDEO_PALETTE_YUV420P, "YUV420P" }, | |
574 | { VIDEO_PALETTE_YUV410P, "YUV410P" }, | |
575 | { -1, NULL } | |
576 | }; | |
577 | ||
578 | /* Decoder error codes: */ | |
579 | static struct w9968cf_symbolic_list decoder_errlist[] = { | |
580 | { W9968CF_DEC_ERR_CORRUPTED_DATA, "Corrupted data" }, | |
581 | { W9968CF_DEC_ERR_BUF_OVERFLOW, "Buffer overflow" }, | |
582 | { W9968CF_DEC_ERR_NO_SOI, "SOI marker not found" }, | |
583 | { W9968CF_DEC_ERR_NO_SOF0, "SOF0 marker not found" }, | |
584 | { W9968CF_DEC_ERR_NO_SOS, "SOS marker not found" }, | |
585 | { W9968CF_DEC_ERR_NO_EOI, "EOI marker not found" }, | |
586 | { -1, NULL } | |
587 | }; | |
588 | ||
589 | /* URB error codes: */ | |
590 | static struct w9968cf_symbolic_list urb_errlist[] = { | |
591 | { -ENOMEM, "No memory for allocation of internal structures" }, | |
592 | { -ENOSPC, "The host controller's bandwidth is already consumed" }, | |
593 | { -ENOENT, "URB was canceled by unlink_urb" }, | |
594 | { -EXDEV, "ISO transfer only partially completed" }, | |
595 | { -EAGAIN, "Too match scheduled for the future" }, | |
596 | { -ENXIO, "URB already queued" }, | |
597 | { -EFBIG, "Too much ISO frames requested" }, | |
598 | { -ENOSR, "Buffer error (overrun)" }, | |
599 | { -EPIPE, "Specified endpoint is stalled (device not responding)"}, | |
600 | { -EOVERFLOW, "Babble (bad cable?)" }, | |
601 | { -EPROTO, "Bit-stuff error (bad cable?)" }, | |
602 | { -EILSEQ, "CRC/Timeout" }, | |
603 | { -ETIMEDOUT, "NAK (device does not respond)" }, | |
604 | { -1, NULL } | |
605 | }; | |
606 | ||
607 | ||
608 | ||
609 | /**************************************************************************** | |
610 | * Memory management functions * | |
611 | ****************************************************************************/ | |
612 | static void* rvmalloc(unsigned long size) | |
613 | { | |
614 | void* mem; | |
615 | unsigned long adr; | |
616 | ||
617 | size = PAGE_ALIGN(size); | |
618 | mem = vmalloc_32(size); | |
619 | if (!mem) | |
620 | return NULL; | |
621 | ||
622 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ | |
623 | adr = (unsigned long) mem; | |
624 | while (size > 0) { | |
625 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
626 | adr += PAGE_SIZE; | |
627 | size -= PAGE_SIZE; | |
628 | } | |
629 | ||
630 | return mem; | |
631 | } | |
632 | ||
633 | ||
634 | static void rvfree(void* mem, unsigned long size) | |
635 | { | |
636 | unsigned long adr; | |
637 | ||
638 | if (!mem) | |
639 | return; | |
640 | ||
641 | adr = (unsigned long) mem; | |
642 | while ((long) size > 0) { | |
643 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
644 | adr += PAGE_SIZE; | |
645 | size -= PAGE_SIZE; | |
646 | } | |
647 | vfree(mem); | |
648 | } | |
649 | ||
650 | ||
651 | /*-------------------------------------------------------------------------- | |
652 | Deallocate previously allocated memory. | |
653 | --------------------------------------------------------------------------*/ | |
654 | static void w9968cf_deallocate_memory(struct w9968cf_device* cam) | |
655 | { | |
656 | u8 i; | |
657 | ||
658 | /* Free the isochronous transfer buffers */ | |
659 | for (i = 0; i < W9968CF_URBS; i++) { | |
660 | kfree(cam->transfer_buffer[i]); | |
661 | cam->transfer_buffer[i] = NULL; | |
662 | } | |
663 | ||
664 | /* Free temporary frame buffer */ | |
665 | if (cam->frame_tmp.buffer) { | |
666 | rvfree(cam->frame_tmp.buffer, cam->frame_tmp.size); | |
667 | cam->frame_tmp.buffer = NULL; | |
668 | } | |
669 | ||
670 | /* Free helper buffer */ | |
671 | if (cam->frame_vpp.buffer) { | |
672 | rvfree(cam->frame_vpp.buffer, cam->frame_vpp.size); | |
673 | cam->frame_vpp.buffer = NULL; | |
674 | } | |
675 | ||
676 | /* Free video frame buffers */ | |
677 | if (cam->frame[0].buffer) { | |
678 | rvfree(cam->frame[0].buffer, cam->nbuffers*cam->frame[0].size); | |
679 | cam->frame[0].buffer = NULL; | |
680 | } | |
681 | ||
682 | cam->nbuffers = 0; | |
683 | ||
684 | DBG(5, "Memory successfully deallocated") | |
685 | } | |
686 | ||
687 | ||
688 | /*-------------------------------------------------------------------------- | |
689 | Allocate memory buffers for USB transfers and video frames. | |
690 | This function is called by open() only. | |
691 | Return 0 on success, a negative number otherwise. | |
692 | --------------------------------------------------------------------------*/ | |
693 | static int w9968cf_allocate_memory(struct w9968cf_device* cam) | |
694 | { | |
695 | const u16 p_size = wMaxPacketSize[cam->altsetting-1]; | |
696 | void* buff = NULL; | |
697 | unsigned long hw_bufsize, vpp_bufsize; | |
698 | u8 i, bpp; | |
699 | ||
700 | /* NOTE: Deallocation is done elsewhere in case of error */ | |
701 | ||
702 | /* Calculate the max amount of raw data per frame from the device */ | |
703 | hw_bufsize = cam->maxwidth*cam->maxheight*2; | |
704 | ||
705 | /* Calculate the max buf. size needed for post-processing routines */ | |
706 | bpp = (w9968cf_vpp) ? 4 : 2; | |
707 | if (cam->upscaling) | |
708 | vpp_bufsize = max(W9968CF_MAX_WIDTH*W9968CF_MAX_HEIGHT*bpp, | |
709 | cam->maxwidth*cam->maxheight*bpp); | |
710 | else | |
711 | vpp_bufsize = cam->maxwidth*cam->maxheight*bpp; | |
712 | ||
713 | /* Allocate memory for the isochronous transfer buffers */ | |
714 | for (i = 0; i < W9968CF_URBS; i++) { | |
715 | if (!(cam->transfer_buffer[i] = | |
716 | kmalloc(W9968CF_ISO_PACKETS*p_size, GFP_KERNEL))) { | |
717 | DBG(1, "Couldn't allocate memory for the isochronous " | |
718 | "transfer buffers (%u bytes)", | |
719 | p_size * W9968CF_ISO_PACKETS) | |
720 | return -ENOMEM; | |
721 | } | |
722 | memset(cam->transfer_buffer[i], 0, W9968CF_ISO_PACKETS*p_size); | |
723 | } | |
724 | ||
725 | /* Allocate memory for the temporary frame buffer */ | |
726 | if (!(cam->frame_tmp.buffer = rvmalloc(hw_bufsize))) { | |
727 | DBG(1, "Couldn't allocate memory for the temporary " | |
728 | "video frame buffer (%lu bytes)", hw_bufsize) | |
729 | return -ENOMEM; | |
730 | } | |
731 | cam->frame_tmp.size = hw_bufsize; | |
732 | cam->frame_tmp.number = -1; | |
733 | ||
734 | /* Allocate memory for the helper buffer */ | |
735 | if (w9968cf_vpp) { | |
736 | if (!(cam->frame_vpp.buffer = rvmalloc(vpp_bufsize))) { | |
737 | DBG(1, "Couldn't allocate memory for the helper buffer" | |
738 | " (%lu bytes)", vpp_bufsize) | |
739 | return -ENOMEM; | |
740 | } | |
741 | cam->frame_vpp.size = vpp_bufsize; | |
742 | } else | |
743 | cam->frame_vpp.buffer = NULL; | |
744 | ||
745 | /* Allocate memory for video frame buffers */ | |
746 | cam->nbuffers = cam->max_buffers; | |
747 | while (cam->nbuffers >= 2) { | |
748 | if ((buff = rvmalloc(cam->nbuffers * vpp_bufsize))) | |
749 | break; | |
750 | else | |
751 | cam->nbuffers--; | |
752 | } | |
753 | ||
754 | if (!buff) { | |
755 | DBG(1, "Couldn't allocate memory for the video frame buffers") | |
756 | cam->nbuffers = 0; | |
757 | return -ENOMEM; | |
758 | } | |
759 | ||
760 | if (cam->nbuffers != cam->max_buffers) | |
761 | DBG(2, "Couldn't allocate memory for %u video frame buffers. " | |
762 | "Only memory for %u buffers has been allocated", | |
763 | cam->max_buffers, cam->nbuffers) | |
764 | ||
765 | for (i = 0; i < cam->nbuffers; i++) { | |
766 | cam->frame[i].buffer = buff + i*vpp_bufsize; | |
767 | cam->frame[i].size = vpp_bufsize; | |
768 | cam->frame[i].number = i; | |
769 | /* Circular list */ | |
770 | if (i != cam->nbuffers-1) | |
771 | cam->frame[i].next = &cam->frame[i+1]; | |
772 | else | |
773 | cam->frame[i].next = &cam->frame[0]; | |
774 | cam->frame[i].status = F_UNUSED; | |
775 | } | |
776 | ||
777 | DBG(5, "Memory successfully allocated") | |
778 | return 0; | |
779 | } | |
780 | ||
781 | ||
782 | ||
783 | /**************************************************************************** | |
784 | * USB-specific functions * | |
785 | ****************************************************************************/ | |
786 | ||
787 | /*-------------------------------------------------------------------------- | |
788 | This is an handler function which is called after the URBs are completed. | |
789 | It collects multiple data packets coming from the camera by putting them | |
790 | into frame buffers: one or more zero data length data packets are used to | |
791 | mark the end of a video frame; the first non-zero data packet is the start | |
792 | of the next video frame; if an error is encountered in a packet, the entire | |
793 | video frame is discarded and grabbed again. | |
794 | If there are no requested frames in the FIFO list, packets are collected into | |
795 | a temporary buffer. | |
796 | --------------------------------------------------------------------------*/ | |
797 | static void w9968cf_urb_complete(struct urb *urb, struct pt_regs *regs) | |
798 | { | |
799 | struct w9968cf_device* cam = (struct w9968cf_device*)urb->context; | |
800 | struct w9968cf_frame_t** f; | |
801 | unsigned int len, status; | |
802 | void* pos; | |
803 | u8 i; | |
804 | int err = 0; | |
805 | ||
806 | if ((!cam->streaming) || cam->disconnected) { | |
807 | DBG(4, "Got interrupt, but not streaming") | |
808 | return; | |
809 | } | |
810 | ||
811 | /* "(*f)" will be used instead of "cam->frame_current" */ | |
812 | f = &cam->frame_current; | |
813 | ||
814 | /* If a frame has been requested and we are grabbing into | |
815 | the temporary frame, we'll switch to that requested frame */ | |
816 | if ((*f) == &cam->frame_tmp && *cam->requested_frame) { | |
817 | if (cam->frame_tmp.status == F_GRABBING) { | |
818 | w9968cf_pop_frame(cam, &cam->frame_current); | |
819 | (*f)->status = F_GRABBING; | |
820 | (*f)->length = cam->frame_tmp.length; | |
821 | memcpy((*f)->buffer, cam->frame_tmp.buffer, | |
822 | (*f)->length); | |
823 | DBG(6, "Switched from temp. frame to frame #%d", | |
824 | (*f)->number) | |
825 | } | |
826 | } | |
827 | ||
828 | for (i = 0; i < urb->number_of_packets; i++) { | |
829 | len = urb->iso_frame_desc[i].actual_length; | |
830 | status = urb->iso_frame_desc[i].status; | |
831 | pos = urb->iso_frame_desc[i].offset + urb->transfer_buffer; | |
832 | ||
833 | if (status && len != 0) { | |
834 | DBG(4, "URB failed, error in data packet " | |
835 | "(error #%u, %s)", | |
836 | status, symbolic(urb_errlist, status)) | |
837 | (*f)->status = F_ERROR; | |
838 | continue; | |
839 | } | |
840 | ||
841 | if (len) { /* start of frame */ | |
842 | ||
843 | if ((*f)->status == F_UNUSED) { | |
844 | (*f)->status = F_GRABBING; | |
845 | (*f)->length = 0; | |
846 | } | |
847 | ||
848 | /* Buffer overflows shouldn't happen, however...*/ | |
849 | if ((*f)->length + len > (*f)->size) { | |
850 | DBG(4, "Buffer overflow: bad data packets") | |
851 | (*f)->status = F_ERROR; | |
852 | } | |
853 | ||
854 | if ((*f)->status == F_GRABBING) { | |
855 | memcpy((*f)->buffer + (*f)->length, pos, len); | |
856 | (*f)->length += len; | |
857 | } | |
858 | ||
859 | } else if ((*f)->status == F_GRABBING) { /* end of frame */ | |
860 | ||
861 | DBG(6, "Frame #%d successfully grabbed", (*f)->number) | |
862 | ||
863 | if (cam->vpp_flag & VPP_DECOMPRESSION) { | |
864 | err = w9968cf_vpp->check_headers((*f)->buffer, | |
865 | (*f)->length); | |
866 | if (err) { | |
867 | DBG(4, "Skip corrupted frame: %s", | |
868 | symbolic(decoder_errlist, err)) | |
869 | (*f)->status = F_UNUSED; | |
870 | continue; /* grab this frame again */ | |
871 | } | |
872 | } | |
873 | ||
874 | (*f)->status = F_READY; | |
875 | (*f)->queued = 0; | |
876 | ||
877 | /* Take a pointer to the new frame from the FIFO list. | |
878 | If the list is empty,we'll use the temporary frame*/ | |
879 | if (*cam->requested_frame) | |
880 | w9968cf_pop_frame(cam, &cam->frame_current); | |
881 | else { | |
882 | cam->frame_current = &cam->frame_tmp; | |
883 | (*f)->status = F_UNUSED; | |
884 | } | |
885 | ||
886 | } else if ((*f)->status == F_ERROR) | |
887 | (*f)->status = F_UNUSED; /* grab it again */ | |
888 | ||
889 | PDBGG("Frame length %lu | pack.#%u | pack.len. %u | state %d", | |
890 | (unsigned long)(*f)->length, i, len, (*f)->status) | |
891 | ||
892 | } /* end for */ | |
893 | ||
894 | /* Resubmit this URB */ | |
895 | urb->dev = cam->usbdev; | |
896 | urb->status = 0; | |
897 | spin_lock(&cam->urb_lock); | |
898 | if (cam->streaming) | |
899 | if ((err = usb_submit_urb(urb, GFP_ATOMIC))) { | |
900 | cam->misconfigured = 1; | |
901 | DBG(1, "Couldn't resubmit the URB: error %d, %s", | |
902 | err, symbolic(urb_errlist, err)) | |
903 | } | |
904 | spin_unlock(&cam->urb_lock); | |
905 | ||
906 | /* Wake up the user process */ | |
907 | wake_up_interruptible(&cam->wait_queue); | |
908 | } | |
909 | ||
910 | ||
911 | /*--------------------------------------------------------------------------- | |
912 | Setup the URB structures for the isochronous transfer. | |
913 | Submit the URBs so that the data transfer begins. | |
914 | Return 0 on success, a negative number otherwise. | |
915 | ---------------------------------------------------------------------------*/ | |
916 | static int w9968cf_start_transfer(struct w9968cf_device* cam) | |
917 | { | |
918 | struct usb_device *udev = cam->usbdev; | |
919 | struct urb* urb; | |
920 | const u16 p_size = wMaxPacketSize[cam->altsetting-1]; | |
921 | u16 w, h, d; | |
922 | int vidcapt; | |
923 | u32 t_size; | |
924 | int err = 0; | |
925 | s8 i, j; | |
926 | ||
927 | for (i = 0; i < W9968CF_URBS; i++) { | |
928 | urb = usb_alloc_urb(W9968CF_ISO_PACKETS, GFP_KERNEL); | |
929 | cam->urb[i] = urb; | |
930 | if (!urb) { | |
931 | for (j = 0; j < i; j++) | |
932 | usb_free_urb(cam->urb[j]); | |
933 | DBG(1, "Couldn't allocate the URB structures") | |
934 | return -ENOMEM; | |
935 | } | |
936 | ||
937 | urb->dev = udev; | |
938 | urb->context = (void*)cam; | |
939 | urb->pipe = usb_rcvisocpipe(udev, 1); | |
940 | urb->transfer_flags = URB_ISO_ASAP; | |
941 | urb->number_of_packets = W9968CF_ISO_PACKETS; | |
942 | urb->complete = w9968cf_urb_complete; | |
943 | urb->transfer_buffer = cam->transfer_buffer[i]; | |
944 | urb->transfer_buffer_length = p_size*W9968CF_ISO_PACKETS; | |
945 | urb->interval = 1; | |
946 | for (j = 0; j < W9968CF_ISO_PACKETS; j++) { | |
947 | urb->iso_frame_desc[j].offset = p_size*j; | |
948 | urb->iso_frame_desc[j].length = p_size; | |
949 | } | |
950 | } | |
951 | ||
952 | /* Transfer size per frame, in WORD ! */ | |
953 | d = cam->hw_depth; | |
954 | w = cam->hw_width; | |
955 | h = cam->hw_height; | |
956 | ||
957 | t_size = (w*h*d)/16; | |
958 | ||
959 | err = w9968cf_write_reg(cam, 0xbf17, 0x00); /* reset everything */ | |
960 | err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* normal operation */ | |
961 | ||
962 | /* Transfer size */ | |
963 | err += w9968cf_write_reg(cam, t_size & 0xffff, 0x3d); /* low bits */ | |
964 | err += w9968cf_write_reg(cam, t_size >> 16, 0x3e); /* high bits */ | |
965 | ||
966 | if (cam->vpp_flag & VPP_DECOMPRESSION) | |
967 | err += w9968cf_upload_quantizationtables(cam); | |
968 | ||
969 | vidcapt = w9968cf_read_reg(cam, 0x16); /* read picture settings */ | |
970 | err += w9968cf_write_reg(cam, vidcapt|0x8000, 0x16); /* capt. enable */ | |
971 | ||
972 | err += usb_set_interface(udev, 0, cam->altsetting); | |
973 | err += w9968cf_write_reg(cam, 0x8a05, 0x3c); /* USB FIFO enable */ | |
974 | ||
975 | if (err || (vidcapt < 0)) { | |
976 | for (i = 0; i < W9968CF_URBS; i++) | |
977 | usb_free_urb(cam->urb[i]); | |
978 | DBG(1, "Couldn't tell the camera to start the data transfer") | |
979 | return err; | |
980 | } | |
981 | ||
982 | w9968cf_init_framelist(cam); | |
983 | ||
984 | /* Begin to grab into the temporary buffer */ | |
985 | cam->frame_tmp.status = F_UNUSED; | |
986 | cam->frame_tmp.queued = 0; | |
987 | cam->frame_current = &cam->frame_tmp; | |
988 | ||
989 | if (!(cam->vpp_flag & VPP_DECOMPRESSION)) | |
990 | DBG(5, "Isochronous transfer size: %lu bytes/frame", | |
991 | (unsigned long)t_size*2) | |
992 | ||
993 | DBG(5, "Starting the isochronous transfer...") | |
994 | ||
995 | cam->streaming = 1; | |
996 | ||
997 | /* Submit the URBs */ | |
998 | for (i = 0; i < W9968CF_URBS; i++) { | |
999 | err = usb_submit_urb(cam->urb[i], GFP_KERNEL); | |
1000 | if (err) { | |
1001 | cam->streaming = 0; | |
1002 | for (j = i-1; j >= 0; j--) { | |
1003 | usb_kill_urb(cam->urb[j]); | |
1004 | usb_free_urb(cam->urb[j]); | |
1005 | } | |
1006 | DBG(1, "Couldn't send a transfer request to the " | |
1007 | "USB core (error #%d, %s)", err, | |
1008 | symbolic(urb_errlist, err)) | |
1009 | return err; | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | ||
1017 | /*-------------------------------------------------------------------------- | |
1018 | Stop the isochronous transfer and set alternate setting to 0 (0Mb/s). | |
1019 | Return 0 on success, a negative number otherwise. | |
1020 | --------------------------------------------------------------------------*/ | |
1021 | static int w9968cf_stop_transfer(struct w9968cf_device* cam) | |
1022 | { | |
1023 | struct usb_device *udev = cam->usbdev; | |
1024 | unsigned long lock_flags; | |
1025 | int err = 0; | |
1026 | s8 i; | |
1027 | ||
1028 | if (!cam->streaming) | |
1029 | return 0; | |
1030 | ||
1031 | /* This avoids race conditions with usb_submit_urb() | |
1032 | in the URB completition handler */ | |
1033 | spin_lock_irqsave(&cam->urb_lock, lock_flags); | |
1034 | cam->streaming = 0; | |
1035 | spin_unlock_irqrestore(&cam->urb_lock, lock_flags); | |
1036 | ||
1037 | for (i = W9968CF_URBS-1; i >= 0; i--) | |
1038 | if (cam->urb[i]) { | |
1039 | usb_kill_urb(cam->urb[i]); | |
1040 | usb_free_urb(cam->urb[i]); | |
1041 | cam->urb[i] = NULL; | |
1042 | } | |
1043 | ||
1044 | if (cam->disconnected) | |
1045 | goto exit; | |
1046 | ||
1047 | err = w9968cf_write_reg(cam, 0x0a05, 0x3c); /* stop USB transfer */ | |
1048 | err += usb_set_interface(udev, 0, 0); /* 0 Mb/s */ | |
1049 | err += w9968cf_write_reg(cam, 0x0000, 0x39); /* disable JPEG encoder */ | |
1050 | err += w9968cf_write_reg(cam, 0x0000, 0x16); /* stop video capture */ | |
1051 | ||
1052 | if (err) { | |
1053 | DBG(2, "Failed to tell the camera to stop the isochronous " | |
1054 | "transfer. However this is not a critical error.") | |
1055 | return -EIO; | |
1056 | } | |
1057 | ||
1058 | exit: | |
1059 | DBG(5, "Isochronous transfer stopped") | |
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | ||
1064 | /*-------------------------------------------------------------------------- | |
1065 | Write a W9968CF register. | |
1066 | Return 0 on success, -1 otherwise. | |
1067 | --------------------------------------------------------------------------*/ | |
1068 | static int w9968cf_write_reg(struct w9968cf_device* cam, u16 value, u16 index) | |
1069 | { | |
1070 | struct usb_device* udev = cam->usbdev; | |
1071 | int res; | |
1072 | ||
1073 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, | |
1074 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, | |
1075 | value, index, NULL, 0, W9968CF_USB_CTRL_TIMEOUT); | |
1076 | ||
1077 | if (res < 0) | |
1078 | DBG(4, "Failed to write a register " | |
1079 | "(value 0x%04X, index 0x%02X, error #%d, %s)", | |
1080 | value, index, res, symbolic(urb_errlist, res)) | |
1081 | ||
1082 | return (res >= 0) ? 0 : -1; | |
1083 | } | |
1084 | ||
1085 | ||
1086 | /*-------------------------------------------------------------------------- | |
1087 | Read a W9968CF register. | |
1088 | Return the register value on success, -1 otherwise. | |
1089 | --------------------------------------------------------------------------*/ | |
1090 | static int w9968cf_read_reg(struct w9968cf_device* cam, u16 index) | |
1091 | { | |
1092 | struct usb_device* udev = cam->usbdev; | |
1093 | u16* buff = cam->control_buffer; | |
1094 | int res; | |
1095 | ||
1096 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 1, | |
1097 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
1098 | 0, index, buff, 2, W9968CF_USB_CTRL_TIMEOUT); | |
1099 | ||
1100 | if (res < 0) | |
1101 | DBG(4, "Failed to read a register " | |
1102 | "(index 0x%02X, error #%d, %s)", | |
1103 | index, res, symbolic(urb_errlist, res)) | |
1104 | ||
1105 | return (res >= 0) ? (int)(*buff) : -1; | |
1106 | } | |
1107 | ||
1108 | ||
1109 | /*-------------------------------------------------------------------------- | |
1110 | Write 64-bit data to the fast serial bus registers. | |
1111 | Return 0 on success, -1 otherwise. | |
1112 | --------------------------------------------------------------------------*/ | |
1113 | static int w9968cf_write_fsb(struct w9968cf_device* cam, u16* data) | |
1114 | { | |
1115 | struct usb_device* udev = cam->usbdev; | |
1116 | u16 value; | |
1117 | int res; | |
1118 | ||
1119 | value = *data++; | |
1120 | ||
1121 | res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, | |
1122 | USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, | |
1123 | value, 0x06, data, 6, W9968CF_USB_CTRL_TIMEOUT); | |
1124 | ||
1125 | if (res < 0) | |
1126 | DBG(4, "Failed to write the FSB registers " | |
1127 | "(error #%d, %s)", res, symbolic(urb_errlist, res)) | |
1128 | ||
1129 | return (res >= 0) ? 0 : -1; | |
1130 | } | |
1131 | ||
1132 | ||
1133 | /*-------------------------------------------------------------------------- | |
1134 | Write data to the serial bus control register. | |
1135 | Return 0 on success, a negative number otherwise. | |
1136 | --------------------------------------------------------------------------*/ | |
1137 | static int w9968cf_write_sb(struct w9968cf_device* cam, u16 value) | |
1138 | { | |
1139 | int err = 0; | |
1140 | ||
1141 | err = w9968cf_write_reg(cam, value, 0x01); | |
1142 | udelay(W9968CF_I2C_BUS_DELAY); | |
1143 | ||
1144 | return err; | |
1145 | } | |
1146 | ||
1147 | ||
1148 | /*-------------------------------------------------------------------------- | |
1149 | Read data from the serial bus control register. | |
1150 | Return 0 on success, a negative number otherwise. | |
1151 | --------------------------------------------------------------------------*/ | |
1152 | static int w9968cf_read_sb(struct w9968cf_device* cam) | |
1153 | { | |
1154 | int v = 0; | |
1155 | ||
1156 | v = w9968cf_read_reg(cam, 0x01); | |
1157 | udelay(W9968CF_I2C_BUS_DELAY); | |
1158 | ||
1159 | return v; | |
1160 | } | |
1161 | ||
1162 | ||
1163 | /*-------------------------------------------------------------------------- | |
1164 | Upload quantization tables for the JPEG compression. | |
1165 | This function is called by w9968cf_start_transfer(). | |
1166 | Return 0 on success, a negative number otherwise. | |
1167 | --------------------------------------------------------------------------*/ | |
1168 | static int w9968cf_upload_quantizationtables(struct w9968cf_device* cam) | |
1169 | { | |
1170 | u16 a, b; | |
1171 | int err = 0, i, j; | |
1172 | ||
1173 | err += w9968cf_write_reg(cam, 0x0010, 0x39); /* JPEG clock enable */ | |
1174 | ||
1175 | for (i = 0, j = 0; i < 32; i++, j += 2) { | |
1176 | a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j+1]) << 8); | |
1177 | b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j+1]) << 8); | |
1178 | err += w9968cf_write_reg(cam, a, 0x40+i); | |
1179 | err += w9968cf_write_reg(cam, b, 0x60+i); | |
1180 | } | |
1181 | err += w9968cf_write_reg(cam, 0x0012, 0x39); /* JPEG encoder enable */ | |
1182 | ||
1183 | return err; | |
1184 | } | |
1185 | ||
1186 | ||
1187 | ||
1188 | /**************************************************************************** | |
1189 | * Low-level I2C I/O functions. * | |
1190 | * The adapter supports the following I2C transfer functions: * | |
1191 | * i2c_adap_fastwrite_byte_data() (at 400 kHz bit frequency only) * | |
1192 | * i2c_adap_read_byte_data() * | |
1193 | * i2c_adap_read_byte() * | |
1194 | ****************************************************************************/ | |
1195 | ||
1196 | static int w9968cf_smbus_start(struct w9968cf_device* cam) | |
1197 | { | |
1198 | int err = 0; | |
1199 | ||
1200 | err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */ | |
1201 | err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */ | |
1202 | ||
1203 | return err; | |
1204 | } | |
1205 | ||
1206 | ||
1207 | static int w9968cf_smbus_stop(struct w9968cf_device* cam) | |
1208 | { | |
1209 | int err = 0; | |
1210 | ||
1211 | err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */ | |
1212 | err += w9968cf_write_sb(cam, 0x0013); /* SDE=1, SDA=1, SCL=1 */ | |
1213 | ||
1214 | return err; | |
1215 | } | |
1216 | ||
1217 | ||
1218 | static int w9968cf_smbus_write_byte(struct w9968cf_device* cam, u8 v) | |
1219 | { | |
1220 | u8 bit; | |
1221 | int err = 0, sda; | |
1222 | ||
1223 | for (bit = 0 ; bit < 8 ; bit++) { | |
1224 | sda = (v & 0x80) ? 2 : 0; | |
1225 | v <<= 1; | |
1226 | /* SDE=1, SDA=sda, SCL=0 */ | |
1227 | err += w9968cf_write_sb(cam, 0x10 | sda); | |
1228 | /* SDE=1, SDA=sda, SCL=1 */ | |
1229 | err += w9968cf_write_sb(cam, 0x11 | sda); | |
1230 | /* SDE=1, SDA=sda, SCL=0 */ | |
1231 | err += w9968cf_write_sb(cam, 0x10 | sda); | |
1232 | } | |
1233 | ||
1234 | return err; | |
1235 | } | |
1236 | ||
1237 | ||
1238 | static int w9968cf_smbus_read_byte(struct w9968cf_device* cam, u8* v) | |
1239 | { | |
1240 | u8 bit; | |
1241 | int err = 0; | |
1242 | ||
1243 | *v = 0; | |
1244 | for (bit = 0 ; bit < 8 ; bit++) { | |
1245 | *v <<= 1; | |
1246 | err += w9968cf_write_sb(cam, 0x0013); | |
1247 | *v |= (w9968cf_read_sb(cam) & 0x0008) ? 1 : 0; | |
1248 | err += w9968cf_write_sb(cam, 0x0012); | |
1249 | } | |
1250 | ||
1251 | return err; | |
1252 | } | |
1253 | ||
1254 | ||
1255 | static int w9968cf_smbus_write_ack(struct w9968cf_device* cam) | |
1256 | { | |
1257 | int err = 0; | |
1258 | ||
1259 | err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */ | |
1260 | err += w9968cf_write_sb(cam, 0x0011); /* SDE=1, SDA=0, SCL=1 */ | |
1261 | err += w9968cf_write_sb(cam, 0x0010); /* SDE=1, SDA=0, SCL=0 */ | |
1262 | ||
1263 | return err; | |
1264 | } | |
1265 | ||
1266 | ||
1267 | static int w9968cf_smbus_read_ack(struct w9968cf_device* cam) | |
1268 | { | |
1269 | int err = 0, sda; | |
1270 | ||
1271 | err += w9968cf_write_sb(cam, 0x0013); /* SDE=1, SDA=1, SCL=1 */ | |
1272 | sda = (w9968cf_read_sb(cam) & 0x08) ? 1 : 0; /* sda = SDA */ | |
1273 | err += w9968cf_write_sb(cam, 0x0012); /* SDE=1, SDA=1, SCL=0 */ | |
1274 | if (sda < 0) | |
1275 | err += sda; | |
1276 | if (sda == 1) { | |
1277 | DBG(6, "Couldn't receive the ACK") | |
1278 | err += -1; | |
1279 | } | |
1280 | ||
1281 | return err; | |
1282 | } | |
1283 | ||
1284 | ||
1285 | /* This seems to refresh the communication through the serial bus */ | |
1286 | static int w9968cf_smbus_refresh_bus(struct w9968cf_device* cam) | |
1287 | { | |
1288 | int err = 0, j; | |
1289 | ||
1290 | for (j = 1; j <= 10; j++) { | |
1291 | err = w9968cf_write_reg(cam, 0x0020, 0x01); | |
1292 | err += w9968cf_write_reg(cam, 0x0000, 0x01); | |
1293 | if (err) | |
1294 | break; | |
1295 | } | |
1296 | ||
1297 | return err; | |
1298 | } | |
1299 | ||
1300 | ||
1301 | /* SMBus protocol: S Addr Wr [A] Subaddr [A] Value [A] P */ | |
1302 | static int | |
1303 | w9968cf_i2c_adap_fastwrite_byte_data(struct w9968cf_device* cam, | |
1304 | u16 address, u8 subaddress,u8 value) | |
1305 | { | |
1306 | u16* data = cam->data_buffer; | |
1307 | int err = 0; | |
1308 | ||
1309 | err += w9968cf_smbus_refresh_bus(cam); | |
1310 | ||
1311 | /* Enable SBUS outputs */ | |
1312 | err += w9968cf_write_sb(cam, 0x0020); | |
1313 | ||
1314 | data[0] = 0x082f | ((address & 0x80) ? 0x1500 : 0x0); | |
1315 | data[0] |= (address & 0x40) ? 0x4000 : 0x0; | |
1316 | data[1] = 0x2082 | ((address & 0x40) ? 0x0005 : 0x0); | |
1317 | data[1] |= (address & 0x20) ? 0x0150 : 0x0; | |
1318 | data[1] |= (address & 0x10) ? 0x5400 : 0x0; | |
1319 | data[2] = 0x8208 | ((address & 0x08) ? 0x0015 : 0x0); | |
1320 | data[2] |= (address & 0x04) ? 0x0540 : 0x0; | |
1321 | data[2] |= (address & 0x02) ? 0x5000 : 0x0; | |
1322 | data[3] = 0x1d20 | ((address & 0x02) ? 0x0001 : 0x0); | |
1323 | data[3] |= (address & 0x01) ? 0x0054 : 0x0; | |
1324 | ||
1325 | err += w9968cf_write_fsb(cam, data); | |
1326 | ||
1327 | data[0] = 0x8208 | ((subaddress & 0x80) ? 0x0015 : 0x0); | |
1328 | data[0] |= (subaddress & 0x40) ? 0x0540 : 0x0; | |
1329 | data[0] |= (subaddress & 0x20) ? 0x5000 : 0x0; | |
1330 | data[1] = 0x0820 | ((subaddress & 0x20) ? 0x0001 : 0x0); | |
1331 | data[1] |= (subaddress & 0x10) ? 0x0054 : 0x0; | |
1332 | data[1] |= (subaddress & 0x08) ? 0x1500 : 0x0; | |
1333 | data[1] |= (subaddress & 0x04) ? 0x4000 : 0x0; | |
1334 | data[2] = 0x2082 | ((subaddress & 0x04) ? 0x0005 : 0x0); | |
1335 | data[2] |= (subaddress & 0x02) ? 0x0150 : 0x0; | |
1336 | data[2] |= (subaddress & 0x01) ? 0x5400 : 0x0; | |
1337 | data[3] = 0x001d; | |
1338 | ||
1339 | err += w9968cf_write_fsb(cam, data); | |
1340 | ||
1341 | data[0] = 0x8208 | ((value & 0x80) ? 0x0015 : 0x0); | |
1342 | data[0] |= (value & 0x40) ? 0x0540 : 0x0; | |
1343 | data[0] |= (value & 0x20) ? 0x5000 : 0x0; | |
1344 | data[1] = 0x0820 | ((value & 0x20) ? 0x0001 : 0x0); | |
1345 | data[1] |= (value & 0x10) ? 0x0054 : 0x0; | |
1346 | data[1] |= (value & 0x08) ? 0x1500 : 0x0; | |
1347 | data[1] |= (value & 0x04) ? 0x4000 : 0x0; | |
1348 | data[2] = 0x2082 | ((value & 0x04) ? 0x0005 : 0x0); | |
1349 | data[2] |= (value & 0x02) ? 0x0150 : 0x0; | |
1350 | data[2] |= (value & 0x01) ? 0x5400 : 0x0; | |
1351 | data[3] = 0xfe1d; | |
1352 | ||
1353 | err += w9968cf_write_fsb(cam, data); | |
1354 | ||
1355 | /* Disable SBUS outputs */ | |
1356 | err += w9968cf_write_sb(cam, 0x0000); | |
1357 | ||
1358 | if (!err) | |
1359 | DBG(5, "I2C write byte data done, addr.0x%04X, subaddr.0x%02X " | |
1360 | "value 0x%02X", address, subaddress, value) | |
1361 | else | |
1362 | DBG(5, "I2C write byte data failed, addr.0x%04X, " | |
1363 | "subaddr.0x%02X, value 0x%02X", | |
1364 | address, subaddress, value) | |
1365 | ||
1366 | return err; | |
1367 | } | |
1368 | ||
1369 | ||
1370 | /* SMBus protocol: S Addr Wr [A] Subaddr [A] P S Addr+1 Rd [A] [Value] NA P */ | |
1371 | static int | |
1372 | w9968cf_i2c_adap_read_byte_data(struct w9968cf_device* cam, | |
1373 | u16 address, u8 subaddress, | |
1374 | u8* value) | |
1375 | { | |
1376 | int err = 0; | |
1377 | ||
1378 | /* Serial data enable */ | |
1379 | err += w9968cf_write_sb(cam, 0x0013); /* don't change ! */ | |
1380 | ||
1381 | err += w9968cf_smbus_start(cam); | |
1382 | err += w9968cf_smbus_write_byte(cam, address); | |
1383 | err += w9968cf_smbus_read_ack(cam); | |
1384 | err += w9968cf_smbus_write_byte(cam, subaddress); | |
1385 | err += w9968cf_smbus_read_ack(cam); | |
1386 | err += w9968cf_smbus_stop(cam); | |
1387 | err += w9968cf_smbus_start(cam); | |
1388 | err += w9968cf_smbus_write_byte(cam, address + 1); | |
1389 | err += w9968cf_smbus_read_ack(cam); | |
1390 | err += w9968cf_smbus_read_byte(cam, value); | |
1391 | err += w9968cf_smbus_write_ack(cam); | |
1392 | err += w9968cf_smbus_stop(cam); | |
1393 | ||
1394 | /* Serial data disable */ | |
1395 | err += w9968cf_write_sb(cam, 0x0000); | |
1396 | ||
1397 | if (!err) | |
1398 | DBG(5, "I2C read byte data done, addr.0x%04X, " | |
1399 | "subaddr.0x%02X, value 0x%02X", | |
1400 | address, subaddress, *value) | |
1401 | else | |
1402 | DBG(5, "I2C read byte data failed, addr.0x%04X, " | |
1403 | "subaddr.0x%02X, wrong value 0x%02X", | |
1404 | address, subaddress, *value) | |
1405 | ||
1406 | return err; | |
1407 | } | |
1408 | ||
1409 | ||
1410 | /* SMBus protocol: S Addr+1 Rd [A] [Value] NA P */ | |
1411 | static int | |
1412 | w9968cf_i2c_adap_read_byte(struct w9968cf_device* cam, | |
1413 | u16 address, u8* value) | |
1414 | { | |
1415 | int err = 0; | |
1416 | ||
1417 | /* Serial data enable */ | |
1418 | err += w9968cf_write_sb(cam, 0x0013); | |
1419 | ||
1420 | err += w9968cf_smbus_start(cam); | |
1421 | err += w9968cf_smbus_write_byte(cam, address + 1); | |
1422 | err += w9968cf_smbus_read_ack(cam); | |
1423 | err += w9968cf_smbus_read_byte(cam, value); | |
1424 | err += w9968cf_smbus_write_ack(cam); | |
1425 | err += w9968cf_smbus_stop(cam); | |
1426 | ||
1427 | /* Serial data disable */ | |
1428 | err += w9968cf_write_sb(cam, 0x0000); | |
1429 | ||
1430 | if (!err) | |
1431 | DBG(5, "I2C read byte done, addr.0x%04X, " | |
1432 | "value 0x%02X", address, *value) | |
1433 | else | |
1434 | DBG(5, "I2C read byte failed, addr.0x%04X, " | |
1435 | "wrong value 0x%02X", address, *value) | |
1436 | ||
1437 | return err; | |
1438 | } | |
1439 | ||
1440 | ||
1441 | /* SMBus protocol: S Addr Wr [A] Value [A] P */ | |
1442 | static int | |
1443 | w9968cf_i2c_adap_write_byte(struct w9968cf_device* cam, | |
1444 | u16 address, u8 value) | |
1445 | { | |
1446 | DBG(4, "i2c_write_byte() is an unsupported transfer mode") | |
1447 | return -EINVAL; | |
1448 | } | |
1449 | ||
1450 | ||
1451 | ||
1452 | /**************************************************************************** | |
1453 | * I2C interface to kernel * | |
1454 | ****************************************************************************/ | |
1455 | ||
1456 | static int | |
1457 | w9968cf_i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, | |
1458 | unsigned short flags, char read_write, u8 command, | |
1459 | int size, union i2c_smbus_data *data) | |
1460 | { | |
1461 | struct w9968cf_device* cam = i2c_get_adapdata(adapter); | |
1462 | u8 i; | |
1463 | int err = 0; | |
1464 | ||
1465 | switch (addr) { | |
1466 | case OV6xx0_SID: | |
1467 | case OV7xx0_SID: | |
1468 | break; | |
1469 | default: | |
1470 | DBG(4, "Rejected slave ID 0x%04X", addr) | |
1471 | return -EINVAL; | |
1472 | } | |
1473 | ||
1474 | if (size == I2C_SMBUS_BYTE) { | |
1475 | /* Why addr <<= 1? See OVXXX0_SID defines in ovcamchip.h */ | |
1476 | addr <<= 1; | |
1477 | ||
1478 | if (read_write == I2C_SMBUS_WRITE) | |
1479 | err = w9968cf_i2c_adap_write_byte(cam, addr, command); | |
1480 | else if (read_write == I2C_SMBUS_READ) | |
1481 | err = w9968cf_i2c_adap_read_byte(cam,addr,&data->byte); | |
1482 | ||
1483 | } else if (size == I2C_SMBUS_BYTE_DATA) { | |
1484 | addr <<= 1; | |
1485 | ||
1486 | if (read_write == I2C_SMBUS_WRITE) | |
1487 | err = w9968cf_i2c_adap_fastwrite_byte_data(cam, addr, | |
1488 | command, data->byte); | |
1489 | else if (read_write == I2C_SMBUS_READ) { | |
1490 | for (i = 1; i <= W9968CF_I2C_RW_RETRIES; i++) { | |
1491 | err = w9968cf_i2c_adap_read_byte_data(cam,addr, | |
1492 | command, &data->byte); | |
1493 | if (err) { | |
1494 | if (w9968cf_smbus_refresh_bus(cam)) { | |
1495 | err = -EIO; | |
1496 | break; | |
1497 | } | |
1498 | } else | |
1499 | break; | |
1500 | } | |
1501 | ||
1502 | } else | |
1503 | return -EINVAL; | |
1504 | ||
1505 | } else { | |
1506 | DBG(4, "Unsupported I2C transfer mode (%d)", size) | |
1507 | return -EINVAL; | |
1508 | } | |
1509 | ||
1510 | return err; | |
1511 | } | |
1512 | ||
1513 | ||
1514 | static u32 w9968cf_i2c_func(struct i2c_adapter* adap) | |
1515 | { | |
1516 | return I2C_FUNC_SMBUS_READ_BYTE | | |
1517 | I2C_FUNC_SMBUS_READ_BYTE_DATA | | |
1518 | I2C_FUNC_SMBUS_WRITE_BYTE_DATA; | |
1519 | } | |
1520 | ||
1521 | ||
1522 | static int w9968cf_i2c_attach_inform(struct i2c_client* client) | |
1523 | { | |
1524 | struct w9968cf_device* cam = i2c_get_adapdata(client->adapter); | |
1da177e4 LT |
1525 | int id = client->driver->id, err = 0; |
1526 | ||
1527 | if (id == I2C_DRIVERID_OVCAMCHIP) { | |
1528 | cam->sensor_client = client; | |
1529 | err = w9968cf_sensor_init(cam); | |
1530 | if (err) { | |
1531 | cam->sensor_client = NULL; | |
1532 | return err; | |
1533 | } | |
1534 | } else { | |
1535 | DBG(4, "Rejected client [%s] with driver [%s]", | |
604f28e2 | 1536 | client->name, client->driver->driver.name) |
1da177e4 LT |
1537 | return -EINVAL; |
1538 | } | |
1539 | ||
1540 | DBG(5, "I2C attach client [%s] with driver [%s]", | |
604f28e2 | 1541 | client->name, client->driver->driver.name) |
1da177e4 LT |
1542 | |
1543 | return 0; | |
1544 | } | |
1545 | ||
1546 | ||
1547 | static int w9968cf_i2c_detach_inform(struct i2c_client* client) | |
1548 | { | |
1549 | struct w9968cf_device* cam = i2c_get_adapdata(client->adapter); | |
1da177e4 LT |
1550 | |
1551 | if (cam->sensor_client == client) | |
1552 | cam->sensor_client = NULL; | |
1553 | ||
fae91e72 | 1554 | DBG(5, "I2C detach client [%s]", client->name) |
1da177e4 LT |
1555 | |
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | ||
1560 | static int | |
1561 | w9968cf_i2c_control(struct i2c_adapter* adapter, unsigned int cmd, | |
1562 | unsigned long arg) | |
1563 | { | |
1564 | return 0; | |
1565 | } | |
1566 | ||
1567 | ||
1568 | static int w9968cf_i2c_init(struct w9968cf_device* cam) | |
1569 | { | |
1570 | int err = 0; | |
1571 | ||
1572 | static struct i2c_algorithm algo = { | |
1da177e4 LT |
1573 | .smbus_xfer = w9968cf_i2c_smbus_xfer, |
1574 | .algo_control = w9968cf_i2c_control, | |
1575 | .functionality = w9968cf_i2c_func, | |
1576 | }; | |
1577 | ||
1578 | static struct i2c_adapter adap = { | |
c7a46533 | 1579 | .id = I2C_HW_SMBUS_W9968CF, |
1da177e4 LT |
1580 | .class = I2C_CLASS_CAM_DIGITAL, |
1581 | .owner = THIS_MODULE, | |
1582 | .client_register = w9968cf_i2c_attach_inform, | |
1583 | .client_unregister = w9968cf_i2c_detach_inform, | |
1584 | .algo = &algo, | |
1585 | }; | |
1586 | ||
1587 | memcpy(&cam->i2c_adapter, &adap, sizeof(struct i2c_adapter)); | |
1588 | strcpy(cam->i2c_adapter.name, "w9968cf"); | |
1589 | i2c_set_adapdata(&cam->i2c_adapter, cam); | |
1590 | ||
1591 | DBG(6, "Registering I2C adapter with kernel...") | |
1592 | ||
1593 | err = i2c_add_adapter(&cam->i2c_adapter); | |
1594 | if (err) | |
1595 | DBG(1, "Failed to register the I2C adapter") | |
1596 | else | |
1597 | DBG(5, "I2C adapter registered") | |
1598 | ||
1599 | return err; | |
1600 | } | |
1601 | ||
1602 | ||
1603 | ||
1604 | /**************************************************************************** | |
1605 | * Helper functions * | |
1606 | ****************************************************************************/ | |
1607 | ||
1608 | /*-------------------------------------------------------------------------- | |
1609 | Turn on the LED on some webcams. A beep should be heard too. | |
1610 | Return 0 on success, a negative number otherwise. | |
1611 | --------------------------------------------------------------------------*/ | |
1612 | static int w9968cf_turn_on_led(struct w9968cf_device* cam) | |
1613 | { | |
1614 | int err = 0; | |
1615 | ||
1616 | err += w9968cf_write_reg(cam, 0xff00, 0x00); /* power-down */ | |
1617 | err += w9968cf_write_reg(cam, 0xbf17, 0x00); /* reset everything */ | |
1618 | err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* normal operation */ | |
1619 | err += w9968cf_write_reg(cam, 0x0010, 0x01); /* serial bus, SDS high */ | |
1620 | err += w9968cf_write_reg(cam, 0x0000, 0x01); /* serial bus, SDS low */ | |
1621 | err += w9968cf_write_reg(cam, 0x0010, 0x01); /* ..high 'beep-beep' */ | |
1622 | ||
1623 | if (err) | |
1624 | DBG(2, "Couldn't turn on the LED") | |
1625 | ||
1626 | DBG(5, "LED turned on") | |
1627 | ||
1628 | return err; | |
1629 | } | |
1630 | ||
1631 | ||
1632 | /*-------------------------------------------------------------------------- | |
1633 | Write some registers for the device initialization. | |
1634 | This function is called once on open(). | |
1635 | Return 0 on success, a negative number otherwise. | |
1636 | --------------------------------------------------------------------------*/ | |
1637 | static int w9968cf_init_chip(struct w9968cf_device* cam) | |
1638 | { | |
1639 | unsigned long hw_bufsize = cam->maxwidth*cam->maxheight*2, | |
1640 | y0 = 0x0000, | |
1641 | u0 = y0 + hw_bufsize/2, | |
1642 | v0 = u0 + hw_bufsize/4, | |
1643 | y1 = v0 + hw_bufsize/4, | |
1644 | u1 = y1 + hw_bufsize/2, | |
1645 | v1 = u1 + hw_bufsize/4; | |
1646 | int err = 0; | |
1647 | ||
1648 | err += w9968cf_write_reg(cam, 0xff00, 0x00); /* power off */ | |
1649 | err += w9968cf_write_reg(cam, 0xbf10, 0x00); /* power on */ | |
1650 | ||
1651 | err += w9968cf_write_reg(cam, 0x405d, 0x03); /* DRAM timings */ | |
1652 | err += w9968cf_write_reg(cam, 0x0030, 0x04); /* SDRAM timings */ | |
1653 | ||
1654 | err += w9968cf_write_reg(cam, y0 & 0xffff, 0x20); /* Y buf.0, low */ | |
1655 | err += w9968cf_write_reg(cam, y0 >> 16, 0x21); /* Y buf.0, high */ | |
1656 | err += w9968cf_write_reg(cam, u0 & 0xffff, 0x24); /* U buf.0, low */ | |
1657 | err += w9968cf_write_reg(cam, u0 >> 16, 0x25); /* U buf.0, high */ | |
1658 | err += w9968cf_write_reg(cam, v0 & 0xffff, 0x28); /* V buf.0, low */ | |
1659 | err += w9968cf_write_reg(cam, v0 >> 16, 0x29); /* V buf.0, high */ | |
1660 | ||
1661 | err += w9968cf_write_reg(cam, y1 & 0xffff, 0x22); /* Y buf.1, low */ | |
1662 | err += w9968cf_write_reg(cam, y1 >> 16, 0x23); /* Y buf.1, high */ | |
1663 | err += w9968cf_write_reg(cam, u1 & 0xffff, 0x26); /* U buf.1, low */ | |
1664 | err += w9968cf_write_reg(cam, u1 >> 16, 0x27); /* U buf.1, high */ | |
1665 | err += w9968cf_write_reg(cam, v1 & 0xffff, 0x2a); /* V buf.1, low */ | |
1666 | err += w9968cf_write_reg(cam, v1 >> 16, 0x2b); /* V buf.1, high */ | |
1667 | ||
1668 | err += w9968cf_write_reg(cam, y1 & 0xffff, 0x32); /* JPEG buf 0 low */ | |
1669 | err += w9968cf_write_reg(cam, y1 >> 16, 0x33); /* JPEG buf 0 high */ | |
1670 | ||
1671 | err += w9968cf_write_reg(cam, y1 & 0xffff, 0x34); /* JPEG buf 1 low */ | |
1672 | err += w9968cf_write_reg(cam, y1 >> 16, 0x35); /* JPEG bug 1 high */ | |
1673 | ||
1674 | err += w9968cf_write_reg(cam, 0x0000, 0x36);/* JPEG restart interval */ | |
1675 | err += w9968cf_write_reg(cam, 0x0804, 0x37);/*JPEG VLE FIFO threshold*/ | |
1676 | err += w9968cf_write_reg(cam, 0x0000, 0x38);/* disable hw up-scaling */ | |
1677 | err += w9968cf_write_reg(cam, 0x0000, 0x3f); /* JPEG/MCTL test data */ | |
1678 | ||
1679 | err += w9968cf_set_picture(cam, cam->picture); /* this before */ | |
1680 | err += w9968cf_set_window(cam, cam->window); | |
1681 | ||
1682 | if (err) | |
1683 | DBG(1, "Chip initialization failed") | |
1684 | else | |
1685 | DBG(5, "Chip successfully initialized") | |
1686 | ||
1687 | return err; | |
1688 | } | |
1689 | ||
1690 | ||
1691 | /*-------------------------------------------------------------------------- | |
1692 | Return non-zero if the palette is supported, 0 otherwise. | |
1693 | --------------------------------------------------------------------------*/ | |
1694 | static inline u16 w9968cf_valid_palette(u16 palette) | |
1695 | { | |
1696 | u8 i = 0; | |
1697 | while (w9968cf_formatlist[i].palette != 0) { | |
1698 | if (palette == w9968cf_formatlist[i].palette) | |
1699 | return palette; | |
1700 | i++; | |
1701 | } | |
1702 | return 0; | |
1703 | } | |
1704 | ||
1705 | ||
1706 | /*-------------------------------------------------------------------------- | |
1707 | Return the depth corresponding to the given palette. | |
1708 | Palette _must_ be supported ! | |
1709 | --------------------------------------------------------------------------*/ | |
1710 | static inline u16 w9968cf_valid_depth(u16 palette) | |
1711 | { | |
1712 | u8 i=0; | |
1713 | while (w9968cf_formatlist[i].palette != palette) | |
1714 | i++; | |
1715 | ||
1716 | return w9968cf_formatlist[i].depth; | |
1717 | } | |
1718 | ||
1719 | ||
1720 | /*-------------------------------------------------------------------------- | |
1721 | Return non-zero if the format requires decompression, 0 otherwise. | |
1722 | --------------------------------------------------------------------------*/ | |
1723 | static inline u8 w9968cf_need_decompression(u16 palette) | |
1724 | { | |
1725 | u8 i = 0; | |
1726 | while (w9968cf_formatlist[i].palette != 0) { | |
1727 | if (palette == w9968cf_formatlist[i].palette) | |
1728 | return w9968cf_formatlist[i].compression; | |
1729 | i++; | |
1730 | } | |
1731 | return 0; | |
1732 | } | |
1733 | ||
1734 | ||
1735 | /*-------------------------------------------------------------------------- | |
1736 | Change the picture settings of the camera. | |
1737 | Return 0 on success, a negative number otherwise. | |
1738 | --------------------------------------------------------------------------*/ | |
1739 | static int | |
1740 | w9968cf_set_picture(struct w9968cf_device* cam, struct video_picture pict) | |
1741 | { | |
1742 | u16 fmt, hw_depth, hw_palette, reg_v = 0x0000; | |
1743 | int err = 0; | |
1744 | ||
1745 | /* Make sure we are using a valid depth */ | |
1746 | pict.depth = w9968cf_valid_depth(pict.palette); | |
1747 | ||
1748 | fmt = pict.palette; | |
1749 | ||
1750 | hw_depth = pict.depth; /* depth used by the winbond chip */ | |
1751 | hw_palette = pict.palette; /* palette used by the winbond chip */ | |
1752 | ||
1753 | /* VS & HS polarities */ | |
1754 | reg_v = (cam->vs_polarity << 12) | (cam->hs_polarity << 11); | |
1755 | ||
1756 | switch (fmt) | |
1757 | { | |
1758 | case VIDEO_PALETTE_UYVY: | |
1759 | reg_v |= 0x0000; | |
1760 | cam->vpp_flag = VPP_NONE; | |
1761 | break; | |
1762 | case VIDEO_PALETTE_YUV422P: | |
1763 | reg_v |= 0x0002; | |
1764 | cam->vpp_flag = VPP_DECOMPRESSION; | |
1765 | break; | |
1766 | case VIDEO_PALETTE_YUV420: | |
1767 | case VIDEO_PALETTE_YUV420P: | |
1768 | reg_v |= 0x0003; | |
1769 | cam->vpp_flag = VPP_DECOMPRESSION; | |
1770 | break; | |
1771 | case VIDEO_PALETTE_YUYV: | |
1772 | case VIDEO_PALETTE_YUV422: | |
1773 | reg_v |= 0x0000; | |
1774 | cam->vpp_flag = VPP_SWAP_YUV_BYTES; | |
1775 | hw_palette = VIDEO_PALETTE_UYVY; | |
1776 | break; | |
1777 | /* Original video is used instead of RGBX palettes. | |
1778 | Software conversion later. */ | |
1779 | case VIDEO_PALETTE_GREY: | |
1780 | case VIDEO_PALETTE_RGB555: | |
1781 | case VIDEO_PALETTE_RGB565: | |
1782 | case VIDEO_PALETTE_RGB24: | |
1783 | case VIDEO_PALETTE_RGB32: | |
1784 | reg_v |= 0x0000; /* UYVY 16 bit is used */ | |
1785 | hw_depth = 16; | |
1786 | hw_palette = VIDEO_PALETTE_UYVY; | |
1787 | cam->vpp_flag = VPP_UYVY_TO_RGBX; | |
1788 | break; | |
1789 | } | |
1790 | ||
1791 | /* NOTE: due to memory issues, it is better to disable the hardware | |
1792 | double buffering during compression */ | |
1793 | if (cam->double_buffer && !(cam->vpp_flag & VPP_DECOMPRESSION)) | |
1794 | reg_v |= 0x0080; | |
1795 | ||
1796 | if (cam->clamping) | |
1797 | reg_v |= 0x0020; | |
1798 | ||
1799 | if (cam->filter_type == 1) | |
1800 | reg_v |= 0x0008; | |
1801 | else if (cam->filter_type == 2) | |
1802 | reg_v |= 0x000c; | |
1803 | ||
1804 | if ((err = w9968cf_write_reg(cam, reg_v, 0x16))) | |
1805 | goto error; | |
1806 | ||
1807 | if ((err = w9968cf_sensor_update_picture(cam, pict))) | |
1808 | goto error; | |
1809 | ||
1810 | /* If all went well, update the device data structure */ | |
1811 | memcpy(&cam->picture, &pict, sizeof(pict)); | |
1812 | cam->hw_depth = hw_depth; | |
1813 | cam->hw_palette = hw_palette; | |
1814 | ||
1815 | /* Settings changed, so we clear the frame buffers */ | |
1816 | memset(cam->frame[0].buffer, 0, cam->nbuffers*cam->frame[0].size); | |
1817 | ||
1818 | DBG(4, "Palette is %s, depth is %u bpp", | |
1819 | symbolic(v4l1_plist, pict.palette), pict.depth) | |
1820 | ||
1821 | return 0; | |
1822 | ||
1823 | error: | |
1824 | DBG(1, "Failed to change picture settings") | |
1825 | return err; | |
1826 | } | |
1827 | ||
1828 | ||
1829 | /*-------------------------------------------------------------------------- | |
1830 | Change the capture area size of the camera. | |
1831 | This function _must_ be called _after_ w9968cf_set_picture(). | |
1832 | Return 0 on success, a negative number otherwise. | |
1833 | --------------------------------------------------------------------------*/ | |
1834 | static int | |
1835 | w9968cf_set_window(struct w9968cf_device* cam, struct video_window win) | |
1836 | { | |
1837 | u16 x, y, w, h, scx, scy, cw, ch, ax, ay; | |
1838 | unsigned long fw, fh; | |
1839 | struct ovcamchip_window s_win; | |
1840 | int err = 0; | |
1841 | ||
1842 | /* Work around to avoid FP arithmetics */ | |
1843 | #define __SC(x) ((x) << 10) | |
1844 | #define __UNSC(x) ((x) >> 10) | |
1845 | ||
1846 | /* Make sure we are using a supported resolution */ | |
1847 | if ((err = w9968cf_adjust_window_size(cam, (u16*)&win.width, | |
1848 | (u16*)&win.height))) | |
1849 | goto error; | |
1850 | ||
1851 | /* Scaling factors */ | |
1852 | fw = __SC(win.width) / cam->maxwidth; | |
1853 | fh = __SC(win.height) / cam->maxheight; | |
1854 | ||
1855 | /* Set up the width and height values used by the chip */ | |
1856 | if ((win.width > cam->maxwidth) || (win.height > cam->maxheight)) { | |
1857 | cam->vpp_flag |= VPP_UPSCALE; | |
1858 | /* Calculate largest w,h mantaining the same w/h ratio */ | |
1859 | w = (fw >= fh) ? cam->maxwidth : __SC(win.width)/fh; | |
1860 | h = (fw >= fh) ? __SC(win.height)/fw : cam->maxheight; | |
1861 | if (w < cam->minwidth) /* just in case */ | |
1862 | w = cam->minwidth; | |
1863 | if (h < cam->minheight) /* just in case */ | |
1864 | h = cam->minheight; | |
1865 | } else { | |
1866 | cam->vpp_flag &= ~VPP_UPSCALE; | |
1867 | w = win.width; | |
1868 | h = win.height; | |
1869 | } | |
1870 | ||
1871 | /* x,y offsets of the cropped area */ | |
1872 | scx = cam->start_cropx; | |
1873 | scy = cam->start_cropy; | |
1874 | ||
1875 | /* Calculate cropped area manteining the right w/h ratio */ | |
1876 | if (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) { | |
1877 | cw = (fw >= fh) ? cam->maxwidth : __SC(win.width)/fh; | |
1878 | ch = (fw >= fh) ? __SC(win.height)/fw : cam->maxheight; | |
1879 | } else { | |
1880 | cw = w; | |
1881 | ch = h; | |
1882 | } | |
1883 | ||
1884 | /* Setup the window of the sensor */ | |
1885 | s_win.format = VIDEO_PALETTE_UYVY; | |
1886 | s_win.width = cam->maxwidth; | |
1887 | s_win.height = cam->maxheight; | |
1888 | s_win.quarter = 0; /* full progressive video */ | |
1889 | ||
1890 | /* Center it */ | |
1891 | s_win.x = (s_win.width - cw) / 2; | |
1892 | s_win.y = (s_win.height - ch) / 2; | |
1893 | ||
1894 | /* Clock divisor */ | |
1895 | if (cam->clockdiv >= 0) | |
1896 | s_win.clockdiv = cam->clockdiv; /* manual override */ | |
1897 | else | |
1898 | switch (cam->sensor) { | |
1899 | case CC_OV6620: | |
1900 | s_win.clockdiv = 0; | |
1901 | break; | |
1902 | case CC_OV6630: | |
1903 | s_win.clockdiv = 0; | |
1904 | break; | |
1905 | case CC_OV76BE: | |
1906 | case CC_OV7610: | |
1907 | case CC_OV7620: | |
1908 | s_win.clockdiv = 0; | |
1909 | break; | |
1910 | default: | |
1911 | s_win.clockdiv = W9968CF_DEF_CLOCKDIVISOR; | |
1912 | } | |
1913 | ||
1914 | /* We have to scale win.x and win.y offsets */ | |
1915 | if ( (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) | |
1916 | || (cam->vpp_flag & VPP_UPSCALE) ) { | |
1917 | ax = __SC(win.x)/fw; | |
1918 | ay = __SC(win.y)/fh; | |
1919 | } else { | |
1920 | ax = win.x; | |
1921 | ay = win.y; | |
1922 | } | |
1923 | ||
1924 | if ((ax + cw) > cam->maxwidth) | |
1925 | ax = cam->maxwidth - cw; | |
1926 | ||
1927 | if ((ay + ch) > cam->maxheight) | |
1928 | ay = cam->maxheight - ch; | |
1929 | ||
1930 | /* Adjust win.x, win.y */ | |
1931 | if ( (cam->largeview && !(cam->vpp_flag & VPP_UPSCALE)) | |
1932 | || (cam->vpp_flag & VPP_UPSCALE) ) { | |
1933 | win.x = __UNSC(ax*fw); | |
1934 | win.y = __UNSC(ay*fh); | |
1935 | } else { | |
1936 | win.x = ax; | |
1937 | win.y = ay; | |
1938 | } | |
1939 | ||
1940 | /* Offsets used by the chip */ | |
1941 | x = ax + s_win.x; | |
1942 | y = ay + s_win.y; | |
1943 | ||
1944 | /* Go ! */ | |
1945 | if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_S_MODE, &s_win))) | |
1946 | goto error; | |
1947 | ||
1948 | err += w9968cf_write_reg(cam, scx + x, 0x10); | |
1949 | err += w9968cf_write_reg(cam, scy + y, 0x11); | |
1950 | err += w9968cf_write_reg(cam, scx + x + cw, 0x12); | |
1951 | err += w9968cf_write_reg(cam, scy + y + ch, 0x13); | |
1952 | err += w9968cf_write_reg(cam, w, 0x14); | |
1953 | err += w9968cf_write_reg(cam, h, 0x15); | |
1954 | ||
1955 | /* JPEG width & height */ | |
1956 | err += w9968cf_write_reg(cam, w, 0x30); | |
1957 | err += w9968cf_write_reg(cam, h, 0x31); | |
1958 | ||
1959 | /* Y & UV frame buffer strides (in WORD) */ | |
1960 | if (cam->vpp_flag & VPP_DECOMPRESSION) { | |
1961 | err += w9968cf_write_reg(cam, w/2, 0x2c); | |
1962 | err += w9968cf_write_reg(cam, w/4, 0x2d); | |
1963 | } else | |
1964 | err += w9968cf_write_reg(cam, w, 0x2c); | |
1965 | ||
1966 | if (err) | |
1967 | goto error; | |
1968 | ||
1969 | /* If all went well, update the device data structure */ | |
1970 | memcpy(&cam->window, &win, sizeof(win)); | |
1971 | cam->hw_width = w; | |
1972 | cam->hw_height = h; | |
1973 | ||
1974 | /* Settings changed, so we clear the frame buffers */ | |
1975 | memset(cam->frame[0].buffer, 0, cam->nbuffers*cam->frame[0].size); | |
1976 | ||
1977 | DBG(4, "The capture area is %dx%d, Offset (x,y)=(%u,%u)", | |
1978 | win.width, win.height, win.x, win.y) | |
1979 | ||
1980 | PDBGG("x=%u ,y=%u, w=%u, h=%u, ax=%u, ay=%u, s_win.x=%u, s_win.y=%u, " | |
1981 | "cw=%u, ch=%u, win.x=%u, win.y=%u, win.width=%u, win.height=%u", | |
1982 | x, y, w, h, ax, ay, s_win.x, s_win.y, cw, ch, win.x, win.y, | |
1983 | win.width, win.height) | |
1984 | ||
1985 | return 0; | |
1986 | ||
1987 | error: | |
1988 | DBG(1, "Failed to change the capture area size") | |
1989 | return err; | |
1990 | } | |
1991 | ||
1992 | ||
1993 | /*-------------------------------------------------------------------------- | |
1994 | Adjust the asked values for window width and height. | |
1995 | Return 0 on success, -1 otherwise. | |
1996 | --------------------------------------------------------------------------*/ | |
1997 | static int | |
1998 | w9968cf_adjust_window_size(struct w9968cf_device* cam, u16* width, u16* height) | |
1999 | { | |
2000 | u16 maxw, maxh; | |
2001 | ||
2002 | if ((*width < cam->minwidth) || (*height < cam->minheight)) | |
2003 | return -ERANGE; | |
2004 | ||
2005 | maxw = cam->upscaling && !(cam->vpp_flag & VPP_DECOMPRESSION) && | |
2006 | w9968cf_vpp ? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth) | |
2007 | : cam->maxwidth; | |
2008 | maxh = cam->upscaling && !(cam->vpp_flag & VPP_DECOMPRESSION) && | |
2009 | w9968cf_vpp ? max((u16)W9968CF_MAX_HEIGHT, cam->maxheight) | |
2010 | : cam->maxheight; | |
2011 | ||
2012 | if (*width > maxw) | |
2013 | *width = maxw; | |
2014 | if (*height > maxh) | |
2015 | *height = maxh; | |
2016 | ||
2017 | if (cam->vpp_flag & VPP_DECOMPRESSION) { | |
2018 | *width &= ~15L; /* multiple of 16 */ | |
2019 | *height &= ~15L; | |
2020 | } | |
2021 | ||
2022 | PDBGG("Window size adjusted w=%u, h=%u ", *width, *height) | |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | ||
2027 | ||
2028 | /*-------------------------------------------------------------------------- | |
2029 | Initialize the FIFO list of requested frames. | |
2030 | --------------------------------------------------------------------------*/ | |
2031 | static void w9968cf_init_framelist(struct w9968cf_device* cam) | |
2032 | { | |
2033 | u8 i; | |
2034 | ||
2035 | for (i = 0; i < cam->nbuffers; i++) { | |
2036 | cam->requested_frame[i] = NULL; | |
2037 | cam->frame[i].queued = 0; | |
2038 | cam->frame[i].status = F_UNUSED; | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | ||
2043 | /*-------------------------------------------------------------------------- | |
2044 | Add a frame in the FIFO list of requested frames. | |
2045 | This function is called in process context. | |
2046 | --------------------------------------------------------------------------*/ | |
2047 | static void w9968cf_push_frame(struct w9968cf_device* cam, u8 f_num) | |
2048 | { | |
2049 | u8 f; | |
2050 | unsigned long lock_flags; | |
2051 | ||
2052 | spin_lock_irqsave(&cam->flist_lock, lock_flags); | |
2053 | ||
2054 | for (f=0; cam->requested_frame[f] != NULL; f++); | |
2055 | cam->requested_frame[f] = &cam->frame[f_num]; | |
2056 | cam->frame[f_num].queued = 1; | |
2057 | cam->frame[f_num].status = F_UNUSED; /* clear the status */ | |
2058 | ||
2059 | spin_unlock_irqrestore(&cam->flist_lock, lock_flags); | |
2060 | ||
2061 | DBG(6, "Frame #%u pushed into the FIFO list. Position %u", f_num, f) | |
2062 | } | |
2063 | ||
2064 | ||
2065 | /*-------------------------------------------------------------------------- | |
2066 | Read, store and remove the first pointer in the FIFO list of requested | |
2067 | frames. This function is called in interrupt context. | |
2068 | --------------------------------------------------------------------------*/ | |
2069 | static void | |
2070 | w9968cf_pop_frame(struct w9968cf_device* cam, struct w9968cf_frame_t** framep) | |
2071 | { | |
2072 | u8 i; | |
2073 | ||
2074 | spin_lock(&cam->flist_lock); | |
2075 | ||
2076 | *framep = cam->requested_frame[0]; | |
2077 | ||
2078 | /* Shift the list of pointers */ | |
2079 | for (i = 0; i < cam->nbuffers-1; i++) | |
2080 | cam->requested_frame[i] = cam->requested_frame[i+1]; | |
2081 | cam->requested_frame[i] = NULL; | |
2082 | ||
2083 | spin_unlock(&cam->flist_lock); | |
2084 | ||
2085 | DBG(6,"Popped frame #%d from the list", (*framep)->number) | |
2086 | } | |
2087 | ||
2088 | ||
2089 | /*-------------------------------------------------------------------------- | |
2090 | High-level video post-processing routine on grabbed frames. | |
2091 | Return 0 on success, a negative number otherwise. | |
2092 | --------------------------------------------------------------------------*/ | |
2093 | static int | |
2094 | w9968cf_postprocess_frame(struct w9968cf_device* cam, | |
2095 | struct w9968cf_frame_t* fr) | |
2096 | { | |
2097 | void *pIn = fr->buffer, *pOut = cam->frame_vpp.buffer, *tmp; | |
2098 | u16 w = cam->window.width, | |
2099 | h = cam->window.height, | |
2100 | d = cam->picture.depth, | |
2101 | fmt = cam->picture.palette, | |
2102 | rgb = cam->force_rgb, | |
2103 | hw_w = cam->hw_width, | |
2104 | hw_h = cam->hw_height, | |
2105 | hw_d = cam->hw_depth; | |
2106 | int err = 0; | |
2107 | ||
2108 | #define _PSWAP(pIn, pOut) {tmp = (pIn); (pIn) = (pOut); (pOut) = tmp;} | |
2109 | ||
2110 | if (cam->vpp_flag & VPP_DECOMPRESSION) { | |
2111 | memcpy(pOut, pIn, fr->length); | |
2112 | _PSWAP(pIn, pOut) | |
2113 | err = w9968cf_vpp->decode(pIn, fr->length, hw_w, hw_h, pOut); | |
2114 | PDBGG("Compressed frame length: %lu",(unsigned long)fr->length) | |
2115 | fr->length = (hw_w*hw_h*hw_d)/8; | |
2116 | _PSWAP(pIn, pOut) | |
2117 | if (err) { | |
2118 | DBG(4, "An error occurred while decoding the frame: " | |
2119 | "%s", symbolic(decoder_errlist, err)) | |
2120 | return err; | |
2121 | } else | |
2122 | DBG(6, "Frame decoded") | |
2123 | } | |
2124 | ||
2125 | if (cam->vpp_flag & VPP_SWAP_YUV_BYTES) { | |
2126 | w9968cf_vpp->swap_yuvbytes(pIn, fr->length); | |
2127 | DBG(6, "Original UYVY component ordering changed") | |
2128 | } | |
2129 | ||
2130 | if (cam->vpp_flag & VPP_UPSCALE) { | |
2131 | w9968cf_vpp->scale_up(pIn, pOut, hw_w, hw_h, hw_d, w, h); | |
2132 | fr->length = (w*h*hw_d)/8; | |
2133 | _PSWAP(pIn, pOut) | |
2134 | DBG(6, "Vertical up-scaling done: %u,%u,%ubpp->%u,%u", | |
2135 | hw_w, hw_h, hw_d, w, h) | |
2136 | } | |
2137 | ||
2138 | if (cam->vpp_flag & VPP_UYVY_TO_RGBX) { | |
2139 | w9968cf_vpp->uyvy_to_rgbx(pIn, fr->length, pOut, fmt, rgb); | |
2140 | fr->length = (w*h*d)/8; | |
2141 | _PSWAP(pIn, pOut) | |
2142 | DBG(6, "UYVY-16bit to %s conversion done", | |
2143 | symbolic(v4l1_plist, fmt)) | |
2144 | } | |
2145 | ||
2146 | if (pOut == fr->buffer) | |
2147 | memcpy(fr->buffer, cam->frame_vpp.buffer, fr->length); | |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | ||
2153 | ||
2154 | /**************************************************************************** | |
2155 | * Image sensor control routines * | |
2156 | ****************************************************************************/ | |
2157 | ||
2158 | static int | |
2159 | w9968cf_sensor_set_control(struct w9968cf_device* cam, int cid, int val) | |
2160 | { | |
2161 | struct ovcamchip_control ctl; | |
2162 | int err; | |
2163 | ||
2164 | ctl.id = cid; | |
2165 | ctl.value = val; | |
2166 | ||
2167 | err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_S_CTRL, &ctl); | |
2168 | ||
2169 | return err; | |
2170 | } | |
2171 | ||
2172 | ||
2173 | static int | |
2174 | w9968cf_sensor_get_control(struct w9968cf_device* cam, int cid, int* val) | |
2175 | { | |
2176 | struct ovcamchip_control ctl; | |
2177 | int err; | |
2178 | ||
2179 | ctl.id = cid; | |
2180 | ||
2181 | err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_G_CTRL, &ctl); | |
2182 | if (!err) | |
2183 | *val = ctl.value; | |
2184 | ||
2185 | return err; | |
2186 | } | |
2187 | ||
2188 | ||
2189 | static int | |
2190 | w9968cf_sensor_cmd(struct w9968cf_device* cam, unsigned int cmd, void* arg) | |
2191 | { | |
2192 | struct i2c_client* c = cam->sensor_client; | |
2193 | int rc = 0; | |
2194 | ||
2195 | if (!c || !c->driver || !c->driver->command) | |
2196 | return -EINVAL; | |
2197 | ||
2198 | rc = c->driver->command(c, cmd, arg); | |
2199 | /* The I2C driver returns -EPERM on non-supported controls */ | |
2200 | return (rc < 0 && rc != -EPERM) ? rc : 0; | |
2201 | } | |
2202 | ||
2203 | ||
2204 | /*-------------------------------------------------------------------------- | |
2205 | Update some settings of the image sensor. | |
2206 | Returns: 0 on success, a negative number otherwise. | |
2207 | --------------------------------------------------------------------------*/ | |
2208 | static int w9968cf_sensor_update_settings(struct w9968cf_device* cam) | |
2209 | { | |
2210 | int err = 0; | |
2211 | ||
2212 | /* Auto brightness */ | |
2213 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_AUTOBRIGHT, | |
2214 | cam->auto_brt); | |
2215 | if (err) | |
2216 | return err; | |
2217 | ||
2218 | /* Auto exposure */ | |
2219 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_AUTOEXP, | |
2220 | cam->auto_exp); | |
2221 | if (err) | |
2222 | return err; | |
2223 | ||
2224 | /* Banding filter */ | |
2225 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BANDFILT, | |
2226 | cam->bandfilt); | |
2227 | if (err) | |
2228 | return err; | |
2229 | ||
2230 | /* Light frequency */ | |
2231 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_FREQ, | |
2232 | cam->lightfreq); | |
2233 | if (err) | |
2234 | return err; | |
2235 | ||
2236 | /* Back light */ | |
2237 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BACKLIGHT, | |
2238 | cam->backlight); | |
2239 | if (err) | |
2240 | return err; | |
2241 | ||
2242 | /* Mirror */ | |
2243 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_MIRROR, | |
2244 | cam->mirror); | |
2245 | if (err) | |
2246 | return err; | |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | ||
2252 | /*-------------------------------------------------------------------------- | |
2253 | Get some current picture settings from the image sensor and update the | |
2254 | internal 'picture' structure of the camera. | |
2255 | Returns: 0 on success, a negative number otherwise. | |
2256 | --------------------------------------------------------------------------*/ | |
2257 | static int w9968cf_sensor_get_picture(struct w9968cf_device* cam) | |
2258 | { | |
2259 | int err, v; | |
2260 | ||
2261 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_CONT, &v); | |
2262 | if (err) | |
2263 | return err; | |
2264 | cam->picture.contrast = v; | |
2265 | ||
2266 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_BRIGHT, &v); | |
2267 | if (err) | |
2268 | return err; | |
2269 | cam->picture.brightness = v; | |
2270 | ||
2271 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_SAT, &v); | |
2272 | if (err) | |
2273 | return err; | |
2274 | cam->picture.colour = v; | |
2275 | ||
2276 | err = w9968cf_sensor_get_control(cam, OVCAMCHIP_CID_HUE, &v); | |
2277 | if (err) | |
2278 | return err; | |
2279 | cam->picture.hue = v; | |
2280 | ||
2281 | DBG(5, "Got picture settings from the image sensor") | |
2282 | ||
2283 | PDBGG("Brightness, contrast, hue, colour, whiteness are " | |
2284 | "%u,%u,%u,%u,%u", cam->picture.brightness,cam->picture.contrast, | |
2285 | cam->picture.hue, cam->picture.colour, cam->picture.whiteness) | |
2286 | ||
2287 | return 0; | |
2288 | } | |
2289 | ||
2290 | ||
2291 | /*-------------------------------------------------------------------------- | |
2292 | Update picture settings of the image sensor. | |
2293 | Returns: 0 on success, a negative number otherwise. | |
2294 | --------------------------------------------------------------------------*/ | |
2295 | static int | |
2296 | w9968cf_sensor_update_picture(struct w9968cf_device* cam, | |
2297 | struct video_picture pict) | |
2298 | { | |
2299 | int err = 0; | |
2300 | ||
2301 | if ((!cam->sensor_initialized) | |
2302 | || pict.contrast != cam->picture.contrast) { | |
2303 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_CONT, | |
2304 | pict.contrast); | |
2305 | if (err) | |
2306 | goto fail; | |
2307 | DBG(4, "Contrast changed from %u to %u", | |
2308 | cam->picture.contrast, pict.contrast) | |
2309 | cam->picture.contrast = pict.contrast; | |
2310 | } | |
2311 | ||
2312 | if (((!cam->sensor_initialized) || | |
2313 | pict.brightness != cam->picture.brightness) && (!cam->auto_brt)) { | |
2314 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_BRIGHT, | |
2315 | pict.brightness); | |
2316 | if (err) | |
2317 | goto fail; | |
2318 | DBG(4, "Brightness changed from %u to %u", | |
2319 | cam->picture.brightness, pict.brightness) | |
2320 | cam->picture.brightness = pict.brightness; | |
2321 | } | |
2322 | ||
2323 | if ((!cam->sensor_initialized) || pict.colour != cam->picture.colour) { | |
2324 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_SAT, | |
2325 | pict.colour); | |
2326 | if (err) | |
2327 | goto fail; | |
2328 | DBG(4, "Colour changed from %u to %u", | |
2329 | cam->picture.colour, pict.colour) | |
2330 | cam->picture.colour = pict.colour; | |
2331 | } | |
2332 | ||
2333 | if ((!cam->sensor_initialized) || pict.hue != cam->picture.hue) { | |
2334 | err = w9968cf_sensor_set_control(cam, OVCAMCHIP_CID_HUE, | |
2335 | pict.hue); | |
2336 | if (err) | |
2337 | goto fail; | |
2338 | DBG(4, "Hue changed from %u to %u", | |
2339 | cam->picture.hue, pict.hue) | |
2340 | cam->picture.hue = pict.hue; | |
2341 | } | |
2342 | ||
2343 | return 0; | |
2344 | ||
2345 | fail: | |
2346 | DBG(4, "Failed to change sensor picture setting") | |
2347 | return err; | |
2348 | } | |
2349 | ||
2350 | ||
2351 | ||
2352 | /**************************************************************************** | |
2353 | * Camera configuration * | |
2354 | ****************************************************************************/ | |
2355 | ||
2356 | /*-------------------------------------------------------------------------- | |
2357 | This function is called when a supported image sensor is detected. | |
2358 | Return 0 if the initialization succeeds, a negative number otherwise. | |
2359 | --------------------------------------------------------------------------*/ | |
2360 | static int w9968cf_sensor_init(struct w9968cf_device* cam) | |
2361 | { | |
2362 | int err = 0; | |
2363 | ||
2364 | if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_INITIALIZE, | |
2365 | &cam->monochrome))) | |
2366 | goto error; | |
2367 | ||
2368 | if ((err = w9968cf_sensor_cmd(cam, OVCAMCHIP_CMD_Q_SUBTYPE, | |
2369 | &cam->sensor))) | |
2370 | goto error; | |
2371 | ||
2372 | /* NOTE: Make sure width and height are a multiple of 16 */ | |
2373 | switch (cam->sensor_client->addr) { | |
2374 | case OV6xx0_SID: | |
2375 | cam->maxwidth = 352; | |
2376 | cam->maxheight = 288; | |
2377 | cam->minwidth = 64; | |
2378 | cam->minheight = 48; | |
2379 | break; | |
2380 | case OV7xx0_SID: | |
2381 | cam->maxwidth = 640; | |
2382 | cam->maxheight = 480; | |
2383 | cam->minwidth = 64; | |
2384 | cam->minheight = 48; | |
2385 | break; | |
2386 | default: | |
2387 | DBG(1, "Not supported image sensor detected for %s", | |
2388 | symbolic(camlist, cam->id)) | |
2389 | return -EINVAL; | |
2390 | } | |
2391 | ||
2392 | /* These values depend on the ones in the ovxxx0.c sources */ | |
2393 | switch (cam->sensor) { | |
2394 | case CC_OV7620: | |
2395 | cam->start_cropx = 287; | |
2396 | cam->start_cropy = 35; | |
2397 | /* Seems to work around a bug in the image sensor */ | |
2398 | cam->vs_polarity = 1; | |
2399 | cam->hs_polarity = 1; | |
2400 | break; | |
2401 | default: | |
2402 | cam->start_cropx = 320; | |
2403 | cam->start_cropy = 35; | |
2404 | cam->vs_polarity = 1; | |
2405 | cam->hs_polarity = 0; | |
2406 | } | |
2407 | ||
2408 | if ((err = w9968cf_sensor_update_settings(cam))) | |
2409 | goto error; | |
2410 | ||
2411 | if ((err = w9968cf_sensor_update_picture(cam, cam->picture))) | |
2412 | goto error; | |
2413 | ||
2414 | cam->sensor_initialized = 1; | |
2415 | ||
2416 | DBG(2, "%s image sensor initialized", symbolic(senlist, cam->sensor)) | |
2417 | return 0; | |
2418 | ||
2419 | error: | |
2420 | cam->sensor_initialized = 0; | |
2421 | cam->sensor = CC_UNKNOWN; | |
2422 | DBG(1, "Image sensor initialization failed for %s (/dev/video%d). " | |
2423 | "Try to detach and attach this device again", | |
2424 | symbolic(camlist, cam->id), cam->v4ldev->minor) | |
2425 | return err; | |
2426 | } | |
2427 | ||
2428 | ||
2429 | /*-------------------------------------------------------------------------- | |
2430 | Fill some basic fields in the main device data structure. | |
2431 | This function is called once on w9968cf_usb_probe() for each recognized | |
2432 | camera. | |
2433 | --------------------------------------------------------------------------*/ | |
2434 | static void | |
2435 | w9968cf_configure_camera(struct w9968cf_device* cam, | |
2436 | struct usb_device* udev, | |
2437 | enum w9968cf_model_id mod_id, | |
2438 | const unsigned short dev_nr) | |
2439 | { | |
2440 | init_MUTEX(&cam->fileop_sem); | |
2441 | init_waitqueue_head(&cam->open); | |
2442 | spin_lock_init(&cam->urb_lock); | |
2443 | spin_lock_init(&cam->flist_lock); | |
2444 | ||
2445 | cam->users = 0; | |
2446 | cam->disconnected = 0; | |
2447 | cam->id = mod_id; | |
2448 | cam->sensor = CC_UNKNOWN; | |
2449 | cam->sensor_initialized = 0; | |
2450 | ||
2451 | /* Calculate the alternate setting number (from 1 to 16) | |
2452 | according to the 'packet_size' module parameter */ | |
2453 | if (packet_size[dev_nr] < W9968CF_MIN_PACKET_SIZE) | |
2454 | packet_size[dev_nr] = W9968CF_MIN_PACKET_SIZE; | |
2455 | for (cam->altsetting = 1; | |
2456 | packet_size[dev_nr] < wMaxPacketSize[cam->altsetting-1]; | |
2457 | cam->altsetting++); | |
2458 | ||
2459 | cam->max_buffers = (max_buffers[dev_nr] < 2 || | |
2460 | max_buffers[dev_nr] > W9968CF_MAX_BUFFERS) | |
2461 | ? W9968CF_BUFFERS : (u8)max_buffers[dev_nr]; | |
2462 | ||
2463 | cam->double_buffer = (double_buffer[dev_nr] == 0 || | |
2464 | double_buffer[dev_nr] == 1) | |
2465 | ? (u8)double_buffer[dev_nr]:W9968CF_DOUBLE_BUFFER; | |
2466 | ||
2467 | cam->clamping = (clamping[dev_nr] == 0 || clamping[dev_nr] == 1) | |
2468 | ? (u8)clamping[dev_nr] : W9968CF_CLAMPING; | |
2469 | ||
2470 | cam->filter_type = (filter_type[dev_nr] == 0 || | |
2471 | filter_type[dev_nr] == 1 || | |
2472 | filter_type[dev_nr] == 2) | |
2473 | ? (u8)filter_type[dev_nr] : W9968CF_FILTER_TYPE; | |
2474 | ||
2475 | cam->capture = 1; | |
2476 | ||
2477 | cam->largeview = (largeview[dev_nr] == 0 || largeview[dev_nr] == 1) | |
2478 | ? (u8)largeview[dev_nr] : W9968CF_LARGEVIEW; | |
2479 | ||
2480 | cam->decompression = (decompression[dev_nr] == 0 || | |
2481 | decompression[dev_nr] == 1 || | |
2482 | decompression[dev_nr] == 2) | |
2483 | ? (u8)decompression[dev_nr]:W9968CF_DECOMPRESSION; | |
2484 | ||
2485 | cam->upscaling = (upscaling[dev_nr] == 0 || | |
2486 | upscaling[dev_nr] == 1) | |
2487 | ? (u8)upscaling[dev_nr] : W9968CF_UPSCALING; | |
2488 | ||
2489 | cam->auto_brt = (autobright[dev_nr] == 0 || autobright[dev_nr] == 1) | |
2490 | ? (u8)autobright[dev_nr] : W9968CF_AUTOBRIGHT; | |
2491 | ||
2492 | cam->auto_exp = (autoexp[dev_nr] == 0 || autoexp[dev_nr] == 1) | |
2493 | ? (u8)autoexp[dev_nr] : W9968CF_AUTOEXP; | |
2494 | ||
2495 | cam->lightfreq = (lightfreq[dev_nr] == 50 || lightfreq[dev_nr] == 60) | |
2496 | ? (u8)lightfreq[dev_nr] : W9968CF_LIGHTFREQ; | |
2497 | ||
2498 | cam->bandfilt = (bandingfilter[dev_nr] == 0 || | |
2499 | bandingfilter[dev_nr] == 1) | |
2500 | ? (u8)bandingfilter[dev_nr] : W9968CF_BANDINGFILTER; | |
2501 | ||
2502 | cam->backlight = (backlight[dev_nr] == 0 || backlight[dev_nr] == 1) | |
2503 | ? (u8)backlight[dev_nr] : W9968CF_BACKLIGHT; | |
2504 | ||
2505 | cam->clockdiv = (clockdiv[dev_nr] == -1 || clockdiv[dev_nr] >= 0) | |
2506 | ? (s8)clockdiv[dev_nr] : W9968CF_CLOCKDIV; | |
2507 | ||
2508 | cam->mirror = (mirror[dev_nr] == 0 || mirror[dev_nr] == 1) | |
2509 | ? (u8)mirror[dev_nr] : W9968CF_MIRROR; | |
2510 | ||
2511 | cam->monochrome = (monochrome[dev_nr] == 0 || monochrome[dev_nr] == 1) | |
2512 | ? monochrome[dev_nr] : W9968CF_MONOCHROME; | |
2513 | ||
2514 | cam->picture.brightness = (u16)brightness[dev_nr]; | |
2515 | cam->picture.hue = (u16)hue[dev_nr]; | |
2516 | cam->picture.colour = (u16)colour[dev_nr]; | |
2517 | cam->picture.contrast = (u16)contrast[dev_nr]; | |
2518 | cam->picture.whiteness = (u16)whiteness[dev_nr]; | |
2519 | if (w9968cf_valid_palette((u16)force_palette[dev_nr])) { | |
2520 | cam->picture.palette = (u16)force_palette[dev_nr]; | |
2521 | cam->force_palette = 1; | |
2522 | } else { | |
2523 | cam->force_palette = 0; | |
2524 | if (cam->decompression == 0) | |
2525 | cam->picture.palette = W9968CF_PALETTE_DECOMP_OFF; | |
2526 | else if (cam->decompression == 1) | |
2527 | cam->picture.palette = W9968CF_PALETTE_DECOMP_FORCE; | |
2528 | else | |
2529 | cam->picture.palette = W9968CF_PALETTE_DECOMP_ON; | |
2530 | } | |
2531 | cam->picture.depth = w9968cf_valid_depth(cam->picture.palette); | |
2532 | ||
2533 | cam->force_rgb = (force_rgb[dev_nr] == 0 || force_rgb[dev_nr] == 1) | |
2534 | ? (u8)force_rgb[dev_nr] : W9968CF_FORCE_RGB; | |
2535 | ||
2536 | cam->window.x = 0; | |
2537 | cam->window.y = 0; | |
2538 | cam->window.width = W9968CF_WIDTH; | |
2539 | cam->window.height = W9968CF_HEIGHT; | |
2540 | cam->window.chromakey = 0; | |
2541 | cam->window.clipcount = 0; | |
2542 | cam->window.flags = 0; | |
2543 | ||
2544 | DBG(3, "%s configured with settings #%u:", | |
2545 | symbolic(camlist, cam->id), dev_nr) | |
2546 | ||
2547 | DBG(3, "- Data packet size for USB isochrnous transfer: %u bytes", | |
2548 | wMaxPacketSize[cam->altsetting-1]) | |
2549 | ||
2550 | DBG(3, "- Number of requested video frame buffers: %u", | |
2551 | cam->max_buffers) | |
2552 | ||
2553 | if (cam->double_buffer) | |
2554 | DBG(3, "- Hardware double buffering enabled") | |
2555 | else | |
2556 | DBG(3, "- Hardware double buffering disabled") | |
2557 | ||
2558 | if (cam->filter_type == 0) | |
2559 | DBG(3, "- Video filtering disabled") | |
2560 | else if (cam->filter_type == 1) | |
2561 | DBG(3, "- Video filtering enabled: type 1-2-1") | |
2562 | else if (cam->filter_type == 2) | |
2563 | DBG(3, "- Video filtering enabled: type 2-3-6-3-2") | |
2564 | ||
2565 | if (cam->clamping) | |
2566 | DBG(3, "- Video data clamping (CCIR-601 format) enabled") | |
2567 | else | |
2568 | DBG(3, "- Video data clamping (CCIR-601 format) disabled") | |
2569 | ||
2570 | if (cam->largeview) | |
2571 | DBG(3, "- Large view enabled") | |
2572 | else | |
2573 | DBG(3, "- Large view disabled") | |
2574 | ||
2575 | if ((cam->decompression) == 0 && (!cam->force_palette)) | |
2576 | DBG(3, "- Decompression disabled") | |
2577 | else if ((cam->decompression) == 1 && (!cam->force_palette)) | |
2578 | DBG(3, "- Decompression forced") | |
2579 | else if ((cam->decompression) == 2 && (!cam->force_palette)) | |
2580 | DBG(3, "- Decompression allowed") | |
2581 | ||
2582 | if (cam->upscaling) | |
2583 | DBG(3, "- Software image scaling enabled") | |
2584 | else | |
2585 | DBG(3, "- Software image scaling disabled") | |
2586 | ||
2587 | if (cam->force_palette) | |
2588 | DBG(3, "- Image palette forced to %s", | |
2589 | symbolic(v4l1_plist, cam->picture.palette)) | |
2590 | ||
2591 | if (cam->force_rgb) | |
2592 | DBG(3, "- RGB component ordering will be used instead of BGR") | |
2593 | ||
2594 | if (cam->auto_brt) | |
2595 | DBG(3, "- Auto brightness enabled") | |
2596 | else | |
2597 | DBG(3, "- Auto brightness disabled") | |
2598 | ||
2599 | if (cam->auto_exp) | |
2600 | DBG(3, "- Auto exposure enabled") | |
2601 | else | |
2602 | DBG(3, "- Auto exposure disabled") | |
2603 | ||
2604 | if (cam->backlight) | |
2605 | DBG(3, "- Backlight exposure algorithm enabled") | |
2606 | else | |
2607 | DBG(3, "- Backlight exposure algorithm disabled") | |
2608 | ||
2609 | if (cam->mirror) | |
2610 | DBG(3, "- Mirror enabled") | |
2611 | else | |
2612 | DBG(3, "- Mirror disabled") | |
2613 | ||
2614 | if (cam->bandfilt) | |
2615 | DBG(3, "- Banding filter enabled") | |
2616 | else | |
2617 | DBG(3, "- Banding filter disabled") | |
2618 | ||
2619 | DBG(3, "- Power lighting frequency: %u", cam->lightfreq) | |
2620 | ||
2621 | if (cam->clockdiv == -1) | |
2622 | DBG(3, "- Automatic clock divisor enabled") | |
2623 | else | |
2624 | DBG(3, "- Clock divisor: %d", cam->clockdiv) | |
2625 | ||
2626 | if (cam->monochrome) | |
2627 | DBG(3, "- Image sensor used as monochrome") | |
2628 | else | |
2629 | DBG(3, "- Image sensor not used as monochrome") | |
2630 | } | |
2631 | ||
2632 | ||
2633 | /*-------------------------------------------------------------------------- | |
2634 | If the video post-processing module is not loaded, some parameters | |
2635 | must be overridden. | |
2636 | --------------------------------------------------------------------------*/ | |
2637 | static void w9968cf_adjust_configuration(struct w9968cf_device* cam) | |
2638 | { | |
2639 | if (!w9968cf_vpp) { | |
2640 | if (cam->decompression == 1) { | |
2641 | cam->decompression = 2; | |
2642 | DBG(2, "Video post-processing module not found: " | |
2643 | "'decompression' parameter forced to 2") | |
2644 | } | |
2645 | if (cam->upscaling) { | |
2646 | cam->upscaling = 0; | |
2647 | DBG(2, "Video post-processing module not found: " | |
2648 | "'upscaling' parameter forced to 0") | |
2649 | } | |
2650 | if (cam->picture.palette != VIDEO_PALETTE_UYVY) { | |
2651 | cam->force_palette = 0; | |
2652 | DBG(2, "Video post-processing module not found: " | |
2653 | "'force_palette' parameter forced to 0") | |
2654 | } | |
2655 | cam->picture.palette = VIDEO_PALETTE_UYVY; | |
2656 | cam->picture.depth = w9968cf_valid_depth(cam->picture.palette); | |
2657 | } | |
2658 | } | |
2659 | ||
2660 | ||
2661 | /*-------------------------------------------------------------------------- | |
2662 | Release the resources used by the driver. | |
2663 | This function is called on disconnect | |
2664 | (or on close if deallocation has been deferred) | |
2665 | --------------------------------------------------------------------------*/ | |
2666 | static void w9968cf_release_resources(struct w9968cf_device* cam) | |
2667 | { | |
2668 | down(&w9968cf_devlist_sem); | |
2669 | ||
2670 | DBG(2, "V4L device deregistered: /dev/video%d", cam->v4ldev->minor) | |
2671 | ||
2672 | video_unregister_device(cam->v4ldev); | |
2673 | list_del(&cam->v4llist); | |
2674 | i2c_del_adapter(&cam->i2c_adapter); | |
2675 | w9968cf_deallocate_memory(cam); | |
2676 | kfree(cam->control_buffer); | |
2677 | kfree(cam->data_buffer); | |
2678 | ||
2679 | up(&w9968cf_devlist_sem); | |
2680 | } | |
2681 | ||
2682 | ||
2683 | ||
2684 | /**************************************************************************** | |
2685 | * Video4Linux interface * | |
2686 | ****************************************************************************/ | |
2687 | ||
2688 | static int w9968cf_open(struct inode* inode, struct file* filp) | |
2689 | { | |
2690 | struct w9968cf_device* cam; | |
2691 | int err; | |
2692 | ||
2693 | /* This the only safe way to prevent race conditions with disconnect */ | |
2694 | if (!down_read_trylock(&w9968cf_disconnect)) | |
2695 | return -ERESTARTSYS; | |
2696 | ||
2697 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); | |
2698 | ||
2699 | down(&cam->dev_sem); | |
2700 | ||
2701 | if (cam->sensor == CC_UNKNOWN) { | |
2702 | DBG(2, "No supported image sensor has been detected by the " | |
2703 | "'ovcamchip' module for the %s (/dev/video%d). Make " | |
2704 | "sure it is loaded *before* (re)connecting the camera.", | |
2705 | symbolic(camlist, cam->id), cam->v4ldev->minor) | |
2706 | up(&cam->dev_sem); | |
2707 | up_read(&w9968cf_disconnect); | |
2708 | return -ENODEV; | |
2709 | } | |
2710 | ||
2711 | if (cam->users) { | |
2712 | DBG(2, "%s (/dev/video%d) has been already occupied by '%s'", | |
2713 | symbolic(camlist, cam->id),cam->v4ldev->minor,cam->command) | |
2714 | if ((filp->f_flags & O_NONBLOCK)||(filp->f_flags & O_NDELAY)) { | |
2715 | up(&cam->dev_sem); | |
2716 | up_read(&w9968cf_disconnect); | |
2717 | return -EWOULDBLOCK; | |
2718 | } | |
2719 | up(&cam->dev_sem); | |
2720 | err = wait_event_interruptible_exclusive(cam->open, | |
2721 | cam->disconnected || | |
2722 | !cam->users); | |
2723 | if (err) { | |
2724 | up_read(&w9968cf_disconnect); | |
2725 | return err; | |
2726 | } | |
2727 | if (cam->disconnected) { | |
2728 | up_read(&w9968cf_disconnect); | |
2729 | return -ENODEV; | |
2730 | } | |
2731 | down(&cam->dev_sem); | |
2732 | } | |
2733 | ||
2734 | DBG(5, "Opening '%s', /dev/video%d ...", | |
2735 | symbolic(camlist, cam->id), cam->v4ldev->minor) | |
2736 | ||
2737 | cam->streaming = 0; | |
2738 | cam->misconfigured = 0; | |
2739 | ||
2740 | if (!w9968cf_vpp) | |
2741 | if ((err = w9968cf_vppmod_detect(cam))) | |
2742 | goto out; | |
2743 | ||
2744 | if ((err = w9968cf_allocate_memory(cam))) | |
2745 | goto deallocate_memory; | |
2746 | ||
2747 | if ((err = w9968cf_init_chip(cam))) | |
2748 | goto deallocate_memory; | |
2749 | ||
2750 | if ((err = w9968cf_start_transfer(cam))) | |
2751 | goto deallocate_memory; | |
2752 | ||
2753 | filp->private_data = cam; | |
2754 | ||
2755 | cam->users++; | |
2756 | strcpy(cam->command, current->comm); | |
2757 | ||
2758 | init_waitqueue_head(&cam->wait_queue); | |
2759 | ||
2760 | DBG(5, "Video device is open") | |
2761 | ||
2762 | up(&cam->dev_sem); | |
2763 | up_read(&w9968cf_disconnect); | |
2764 | ||
2765 | return 0; | |
2766 | ||
2767 | deallocate_memory: | |
2768 | w9968cf_deallocate_memory(cam); | |
2769 | out: | |
2770 | DBG(2, "Failed to open the video device") | |
2771 | up(&cam->dev_sem); | |
2772 | up_read(&w9968cf_disconnect); | |
2773 | return err; | |
2774 | } | |
2775 | ||
2776 | ||
2777 | static int w9968cf_release(struct inode* inode, struct file* filp) | |
2778 | { | |
2779 | struct w9968cf_device* cam; | |
2780 | ||
2781 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); | |
2782 | ||
2783 | down(&cam->dev_sem); /* prevent disconnect() to be called */ | |
2784 | ||
2785 | w9968cf_stop_transfer(cam); | |
2786 | ||
2787 | w9968cf_vppmod_release(cam); | |
2788 | ||
2789 | if (cam->disconnected) { | |
2790 | w9968cf_release_resources(cam); | |
2791 | up(&cam->dev_sem); | |
2792 | kfree(cam); | |
2793 | return 0; | |
2794 | } | |
2795 | ||
2796 | cam->users--; | |
2797 | w9968cf_deallocate_memory(cam); | |
2798 | wake_up_interruptible_nr(&cam->open, 1); | |
2799 | ||
2800 | DBG(5, "Video device closed") | |
2801 | up(&cam->dev_sem); | |
2802 | return 0; | |
2803 | } | |
2804 | ||
2805 | ||
2806 | static ssize_t | |
2807 | w9968cf_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos) | |
2808 | { | |
2809 | struct w9968cf_device* cam; | |
2810 | struct w9968cf_frame_t* fr; | |
2811 | int err = 0; | |
2812 | ||
2813 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); | |
2814 | ||
2815 | if (filp->f_flags & O_NONBLOCK) | |
2816 | return -EWOULDBLOCK; | |
2817 | ||
2818 | if (down_interruptible(&cam->fileop_sem)) | |
2819 | return -ERESTARTSYS; | |
2820 | ||
2821 | if (cam->disconnected) { | |
2822 | DBG(2, "Device not present") | |
2823 | up(&cam->fileop_sem); | |
2824 | return -ENODEV; | |
2825 | } | |
2826 | ||
2827 | if (cam->misconfigured) { | |
2828 | DBG(2, "The camera is misconfigured. Close and open it again.") | |
2829 | up(&cam->fileop_sem); | |
2830 | return -EIO; | |
2831 | } | |
2832 | ||
2833 | if (!cam->frame[0].queued) | |
2834 | w9968cf_push_frame(cam, 0); | |
2835 | ||
2836 | if (!cam->frame[1].queued) | |
2837 | w9968cf_push_frame(cam, 1); | |
2838 | ||
2839 | err = wait_event_interruptible(cam->wait_queue, | |
2840 | cam->frame[0].status == F_READY || | |
2841 | cam->frame[1].status == F_READY || | |
2842 | cam->disconnected); | |
2843 | if (err) { | |
2844 | up(&cam->fileop_sem); | |
2845 | return err; | |
2846 | } | |
2847 | if (cam->disconnected) { | |
2848 | up(&cam->fileop_sem); | |
2849 | return -ENODEV; | |
2850 | } | |
2851 | ||
2852 | fr = (cam->frame[0].status == F_READY) ? &cam->frame[0]:&cam->frame[1]; | |
2853 | ||
2854 | if (w9968cf_vpp) | |
2855 | w9968cf_postprocess_frame(cam, fr); | |
2856 | ||
2857 | if (count > fr->length) | |
2858 | count = fr->length; | |
2859 | ||
2860 | if (copy_to_user(buf, fr->buffer, count)) { | |
2861 | fr->status = F_UNUSED; | |
2862 | up(&cam->fileop_sem); | |
2863 | return -EFAULT; | |
2864 | } | |
2865 | *f_pos += count; | |
2866 | ||
2867 | fr->status = F_UNUSED; | |
2868 | ||
2869 | DBG(5, "%zu bytes read", count) | |
2870 | ||
2871 | up(&cam->fileop_sem); | |
2872 | return count; | |
2873 | } | |
2874 | ||
2875 | ||
2876 | static int w9968cf_mmap(struct file* filp, struct vm_area_struct *vma) | |
2877 | { | |
2878 | struct w9968cf_device* cam = (struct w9968cf_device*) | |
2879 | video_get_drvdata(video_devdata(filp)); | |
2880 | unsigned long vsize = vma->vm_end - vma->vm_start, | |
2881 | psize = cam->nbuffers * cam->frame[0].size, | |
2882 | start = vma->vm_start, | |
2883 | pos = (unsigned long)cam->frame[0].buffer, | |
2884 | page; | |
2885 | ||
2886 | if (cam->disconnected) { | |
2887 | DBG(2, "Device not present") | |
2888 | return -ENODEV; | |
2889 | } | |
2890 | ||
2891 | if (cam->misconfigured) { | |
2892 | DBG(2, "The camera is misconfigured. Close and open it again") | |
2893 | return -EIO; | |
2894 | } | |
2895 | ||
2896 | PDBGG("mmapping %lu bytes...", vsize) | |
2897 | ||
2898 | if (vsize > psize - (vma->vm_pgoff << PAGE_SHIFT)) | |
2899 | return -EINVAL; | |
2900 | ||
2901 | while (vsize > 0) { | |
2902 | page = vmalloc_to_pfn((void *)pos); | |
2903 | if (remap_pfn_range(vma, start, page + vma->vm_pgoff, | |
2904 | PAGE_SIZE, vma->vm_page_prot)) | |
2905 | return -EAGAIN; | |
2906 | start += PAGE_SIZE; | |
2907 | pos += PAGE_SIZE; | |
2908 | vsize -= PAGE_SIZE; | |
2909 | } | |
2910 | ||
2911 | DBG(5, "mmap method successfully called") | |
2912 | return 0; | |
2913 | } | |
2914 | ||
2915 | ||
2916 | static int | |
2917 | w9968cf_ioctl(struct inode* inode, struct file* filp, | |
2918 | unsigned int cmd, unsigned long arg) | |
2919 | { | |
2920 | struct w9968cf_device* cam; | |
2921 | int err; | |
2922 | ||
2923 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); | |
2924 | ||
2925 | if (down_interruptible(&cam->fileop_sem)) | |
2926 | return -ERESTARTSYS; | |
2927 | ||
2928 | if (cam->disconnected) { | |
2929 | DBG(2, "Device not present") | |
2930 | up(&cam->fileop_sem); | |
2931 | return -ENODEV; | |
2932 | } | |
2933 | ||
2934 | if (cam->misconfigured) { | |
2935 | DBG(2, "The camera is misconfigured. Close and open it again.") | |
2936 | up(&cam->fileop_sem); | |
2937 | return -EIO; | |
2938 | } | |
2939 | ||
2940 | err = w9968cf_v4l_ioctl(inode, filp, cmd, (void __user *)arg); | |
2941 | ||
2942 | up(&cam->fileop_sem); | |
2943 | return err; | |
2944 | } | |
2945 | ||
2946 | ||
2947 | static int w9968cf_v4l_ioctl(struct inode* inode, struct file* filp, | |
2948 | unsigned int cmd, void __user * arg) | |
2949 | { | |
2950 | struct w9968cf_device* cam; | |
2951 | const char* v4l1_ioctls[] = { | |
2952 | "?", "CGAP", "GCHAN", "SCHAN", "GTUNER", "STUNER", | |
2953 | "GPICT", "SPICT", "CCAPTURE", "GWIN", "SWIN", "GFBUF", | |
2954 | "SFBUF", "KEY", "GFREQ", "SFREQ", "GAUDIO", "SAUDIO", | |
2955 | "SYNC", "MCAPTURE", "GMBUF", "GUNIT", "GCAPTURE", "SCAPTURE", | |
2956 | "SPLAYMODE", "SWRITEMODE", "GPLAYINFO", "SMICROCODE", | |
2957 | "GVBIFMT", "SVBIFMT" | |
2958 | }; | |
2959 | ||
2960 | #define V4L1_IOCTL(cmd) \ | |
52950ed4 | 2961 | ((_IOC_NR((cmd)) < ARRAY_SIZE(v4l1_ioctls)) ? \ |
1da177e4 LT |
2962 | v4l1_ioctls[_IOC_NR((cmd))] : "?") |
2963 | ||
2964 | cam = (struct w9968cf_device*)video_get_drvdata(video_devdata(filp)); | |
2965 | ||
2966 | switch (cmd) { | |
2967 | ||
2968 | case VIDIOCGCAP: /* get video capability */ | |
2969 | { | |
2970 | struct video_capability cap = { | |
2971 | .type = VID_TYPE_CAPTURE | VID_TYPE_SCALES, | |
2972 | .channels = 1, | |
2973 | .audios = 0, | |
2974 | .minwidth = cam->minwidth, | |
2975 | .minheight = cam->minheight, | |
2976 | }; | |
2977 | sprintf(cap.name, "W996[87]CF USB Camera #%d", | |
2978 | cam->v4ldev->minor); | |
2979 | cap.maxwidth = (cam->upscaling && w9968cf_vpp) | |
2980 | ? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth) | |
2981 | : cam->maxwidth; | |
2982 | cap.maxheight = (cam->upscaling && w9968cf_vpp) | |
2983 | ? max((u16)W9968CF_MAX_HEIGHT, cam->maxheight) | |
2984 | : cam->maxheight; | |
2985 | ||
2986 | if (copy_to_user(arg, &cap, sizeof(cap))) | |
2987 | return -EFAULT; | |
2988 | ||
2989 | DBG(5, "VIDIOCGCAP successfully called") | |
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | case VIDIOCGCHAN: /* get video channel informations */ | |
2994 | { | |
2995 | struct video_channel chan; | |
2996 | if (copy_from_user(&chan, arg, sizeof(chan))) | |
2997 | return -EFAULT; | |
2998 | ||
2999 | if (chan.channel != 0) | |
3000 | return -EINVAL; | |
3001 | ||
3002 | strcpy(chan.name, "Camera"); | |
3003 | chan.tuners = 0; | |
3004 | chan.flags = 0; | |
3005 | chan.type = VIDEO_TYPE_CAMERA; | |
3006 | chan.norm = VIDEO_MODE_AUTO; | |
3007 | ||
3008 | if (copy_to_user(arg, &chan, sizeof(chan))) | |
3009 | return -EFAULT; | |
3010 | ||
3011 | DBG(5, "VIDIOCGCHAN successfully called") | |
3012 | return 0; | |
3013 | } | |
3014 | ||
3015 | case VIDIOCSCHAN: /* set active channel */ | |
3016 | { | |
3017 | struct video_channel chan; | |
3018 | ||
3019 | if (copy_from_user(&chan, arg, sizeof(chan))) | |
3020 | return -EFAULT; | |
3021 | ||
3022 | if (chan.channel != 0) | |
3023 | return -EINVAL; | |
3024 | ||
3025 | DBG(5, "VIDIOCSCHAN successfully called") | |
3026 | return 0; | |
3027 | } | |
3028 | ||
3029 | case VIDIOCGPICT: /* get image properties of the picture */ | |
3030 | { | |
3031 | if (w9968cf_sensor_get_picture(cam)) | |
3032 | return -EIO; | |
3033 | ||
3034 | if (copy_to_user(arg, &cam->picture, sizeof(cam->picture))) | |
3035 | return -EFAULT; | |
3036 | ||
3037 | DBG(5, "VIDIOCGPICT successfully called") | |
3038 | return 0; | |
3039 | } | |
3040 | ||
3041 | case VIDIOCSPICT: /* change picture settings */ | |
3042 | { | |
3043 | struct video_picture pict; | |
3044 | int err = 0; | |
3045 | ||
3046 | if (copy_from_user(&pict, arg, sizeof(pict))) | |
3047 | return -EFAULT; | |
3048 | ||
3049 | if ( (cam->force_palette || !w9968cf_vpp) | |
3050 | && pict.palette != cam->picture.palette ) { | |
3051 | DBG(4, "Palette %s rejected: only %s is allowed", | |
3052 | symbolic(v4l1_plist, pict.palette), | |
3053 | symbolic(v4l1_plist, cam->picture.palette)) | |
3054 | return -EINVAL; | |
3055 | } | |
3056 | ||
3057 | if (!w9968cf_valid_palette(pict.palette)) { | |
3058 | DBG(4, "Palette %s not supported. VIDIOCSPICT failed", | |
3059 | symbolic(v4l1_plist, pict.palette)) | |
3060 | return -EINVAL; | |
3061 | } | |
3062 | ||
3063 | if (!cam->force_palette) { | |
3064 | if (cam->decompression == 0) { | |
3065 | if (w9968cf_need_decompression(pict.palette)) { | |
3066 | DBG(4, "Decompression disabled: palette %s is not " | |
3067 | "allowed. VIDIOCSPICT failed", | |
3068 | symbolic(v4l1_plist, pict.palette)) | |
3069 | return -EINVAL; | |
3070 | } | |
3071 | } else if (cam->decompression == 1) { | |
3072 | if (!w9968cf_need_decompression(pict.palette)) { | |
3073 | DBG(4, "Decompression forced: palette %s is not " | |
3074 | "allowed. VIDIOCSPICT failed", | |
3075 | symbolic(v4l1_plist, pict.palette)) | |
3076 | return -EINVAL; | |
3077 | } | |
3078 | } | |
3079 | } | |
3080 | ||
3081 | if (pict.depth != w9968cf_valid_depth(pict.palette)) { | |
3082 | DBG(4, "Requested depth %u bpp is not valid for %s " | |
3083 | "palette: ignored and changed to %u bpp", | |
3084 | pict.depth, symbolic(v4l1_plist, pict.palette), | |
3085 | w9968cf_valid_depth(pict.palette)) | |
3086 | pict.depth = w9968cf_valid_depth(pict.palette); | |
3087 | } | |
3088 | ||
3089 | if (pict.palette != cam->picture.palette) { | |
3090 | if(*cam->requested_frame | |
3091 | || cam->frame_current->queued) { | |
3092 | err = wait_event_interruptible | |
3093 | ( cam->wait_queue, | |
3094 | cam->disconnected || | |
3095 | (!*cam->requested_frame && | |
3096 | !cam->frame_current->queued) ); | |
3097 | if (err) | |
3098 | return err; | |
3099 | if (cam->disconnected) | |
3100 | return -ENODEV; | |
3101 | } | |
3102 | ||
3103 | if (w9968cf_stop_transfer(cam)) | |
3104 | goto ioctl_fail; | |
3105 | ||
3106 | if (w9968cf_set_picture(cam, pict)) | |
3107 | goto ioctl_fail; | |
3108 | ||
3109 | if (w9968cf_start_transfer(cam)) | |
3110 | goto ioctl_fail; | |
3111 | ||
3112 | } else if (w9968cf_sensor_update_picture(cam, pict)) | |
3113 | return -EIO; | |
3114 | ||
3115 | ||
3116 | DBG(5, "VIDIOCSPICT successfully called") | |
3117 | return 0; | |
3118 | } | |
3119 | ||
3120 | case VIDIOCSWIN: /* set capture area */ | |
3121 | { | |
3122 | struct video_window win; | |
3123 | int err = 0; | |
3124 | ||
3125 | if (copy_from_user(&win, arg, sizeof(win))) | |
3126 | return -EFAULT; | |
3127 | ||
3128 | DBG(6, "VIDIOCSWIN called: clipcount=%d, flags=%u, " | |
3129 | "x=%u, y=%u, %ux%u", win.clipcount, win.flags, | |
3130 | win.x, win.y, win.width, win.height) | |
3131 | ||
3132 | if (win.clipcount != 0 || win.flags != 0) | |
3133 | return -EINVAL; | |
3134 | ||
3135 | if ((err = w9968cf_adjust_window_size(cam, (u16*)&win.width, | |
3136 | (u16*)&win.height))) { | |
3137 | DBG(4, "Resolution not supported (%ux%u). " | |
3138 | "VIDIOCSWIN failed", win.width, win.height) | |
3139 | return err; | |
3140 | } | |
3141 | ||
3142 | if (win.x != cam->window.x || | |
3143 | win.y != cam->window.y || | |
3144 | win.width != cam->window.width || | |
3145 | win.height != cam->window.height) { | |
3146 | if(*cam->requested_frame | |
3147 | || cam->frame_current->queued) { | |
3148 | err = wait_event_interruptible | |
3149 | ( cam->wait_queue, | |
3150 | cam->disconnected || | |
3151 | (!*cam->requested_frame && | |
3152 | !cam->frame_current->queued) ); | |
3153 | if (err) | |
3154 | return err; | |
3155 | if (cam->disconnected) | |
3156 | return -ENODEV; | |
3157 | } | |
3158 | ||
3159 | if (w9968cf_stop_transfer(cam)) | |
3160 | goto ioctl_fail; | |
3161 | ||
3162 | /* This _must_ be called before set_window() */ | |
3163 | if (w9968cf_set_picture(cam, cam->picture)) | |
3164 | goto ioctl_fail; | |
3165 | ||
3166 | if (w9968cf_set_window(cam, win)) | |
3167 | goto ioctl_fail; | |
3168 | ||
3169 | if (w9968cf_start_transfer(cam)) | |
3170 | goto ioctl_fail; | |
3171 | } | |
3172 | ||
3173 | DBG(5, "VIDIOCSWIN successfully called. ") | |
3174 | return 0; | |
3175 | } | |
3176 | ||
3177 | case VIDIOCGWIN: /* get current window properties */ | |
3178 | { | |
3179 | if (copy_to_user(arg,&cam->window,sizeof(struct video_window))) | |
3180 | return -EFAULT; | |
3181 | ||
3182 | DBG(5, "VIDIOCGWIN successfully called") | |
3183 | return 0; | |
3184 | } | |
3185 | ||
3186 | case VIDIOCGMBUF: /* request for memory (mapped) buffer */ | |
3187 | { | |
3188 | struct video_mbuf mbuf; | |
3189 | u8 i; | |
3190 | ||
3191 | mbuf.size = cam->nbuffers * cam->frame[0].size; | |
3192 | mbuf.frames = cam->nbuffers; | |
3193 | for (i = 0; i < cam->nbuffers; i++) | |
3194 | mbuf.offsets[i] = (unsigned long)cam->frame[i].buffer - | |
3195 | (unsigned long)cam->frame[0].buffer; | |
3196 | ||
3197 | if (copy_to_user(arg, &mbuf, sizeof(mbuf))) | |
3198 | return -EFAULT; | |
3199 | ||
3200 | DBG(5, "VIDIOCGMBUF successfully called") | |
3201 | return 0; | |
3202 | } | |
3203 | ||
3204 | case VIDIOCMCAPTURE: /* start the capture to a frame */ | |
3205 | { | |
3206 | struct video_mmap mmap; | |
3207 | struct w9968cf_frame_t* fr; | |
3208 | int err = 0; | |
3209 | ||
3210 | if (copy_from_user(&mmap, arg, sizeof(mmap))) | |
3211 | return -EFAULT; | |
3212 | ||
3213 | DBG(6, "VIDIOCMCAPTURE called: frame #%u, format=%s, %dx%d", | |
3214 | mmap.frame, symbolic(v4l1_plist, mmap.format), | |
3215 | mmap.width, mmap.height) | |
3216 | ||
3217 | if (mmap.frame >= cam->nbuffers) { | |
3218 | DBG(4, "Invalid frame number (%u). " | |
3219 | "VIDIOCMCAPTURE failed", mmap.frame) | |
3220 | return -EINVAL; | |
3221 | } | |
3222 | ||
3223 | if (mmap.format!=cam->picture.palette && | |
3224 | (cam->force_palette || !w9968cf_vpp)) { | |
3225 | DBG(4, "Palette %s rejected: only %s is allowed", | |
3226 | symbolic(v4l1_plist, mmap.format), | |
3227 | symbolic(v4l1_plist, cam->picture.palette)) | |
3228 | return -EINVAL; | |
3229 | } | |
3230 | ||
3231 | if (!w9968cf_valid_palette(mmap.format)) { | |
3232 | DBG(4, "Palette %s not supported. " | |
3233 | "VIDIOCMCAPTURE failed", | |
3234 | symbolic(v4l1_plist, mmap.format)) | |
3235 | return -EINVAL; | |
3236 | } | |
3237 | ||
3238 | if (!cam->force_palette) { | |
3239 | if (cam->decompression == 0) { | |
3240 | if (w9968cf_need_decompression(mmap.format)) { | |
3241 | DBG(4, "Decompression disabled: palette %s is not " | |
3242 | "allowed. VIDIOCSPICT failed", | |
3243 | symbolic(v4l1_plist, mmap.format)) | |
3244 | return -EINVAL; | |
3245 | } | |
3246 | } else if (cam->decompression == 1) { | |
3247 | if (!w9968cf_need_decompression(mmap.format)) { | |
3248 | DBG(4, "Decompression forced: palette %s is not " | |
3249 | "allowed. VIDIOCSPICT failed", | |
3250 | symbolic(v4l1_plist, mmap.format)) | |
3251 | return -EINVAL; | |
3252 | } | |
3253 | } | |
3254 | } | |
3255 | ||
3256 | if ((err = w9968cf_adjust_window_size(cam, (u16*)&mmap.width, | |
3257 | (u16*)&mmap.height))) { | |
3258 | DBG(4, "Resolution not supported (%dx%d). " | |
3259 | "VIDIOCMCAPTURE failed", | |
3260 | mmap.width, mmap.height) | |
3261 | return err; | |
3262 | } | |
3263 | ||
3264 | fr = &cam->frame[mmap.frame]; | |
3265 | ||
3266 | if (mmap.width != cam->window.width || | |
3267 | mmap.height != cam->window.height || | |
3268 | mmap.format != cam->picture.palette) { | |
3269 | ||
3270 | struct video_window win; | |
3271 | struct video_picture pict; | |
3272 | ||
3273 | if(*cam->requested_frame | |
3274 | || cam->frame_current->queued) { | |
3275 | DBG(6, "VIDIOCMCAPTURE. Change settings for " | |
3276 | "frame #%u: %dx%d, format %s. Wait...", | |
3277 | mmap.frame, mmap.width, mmap.height, | |
3278 | symbolic(v4l1_plist, mmap.format)) | |
3279 | err = wait_event_interruptible | |
3280 | ( cam->wait_queue, | |
3281 | cam->disconnected || | |
3282 | (!*cam->requested_frame && | |
3283 | !cam->frame_current->queued) ); | |
3284 | if (err) | |
3285 | return err; | |
3286 | if (cam->disconnected) | |
3287 | return -ENODEV; | |
3288 | } | |
3289 | ||
3290 | memcpy(&win, &cam->window, sizeof(win)); | |
3291 | memcpy(&pict, &cam->picture, sizeof(pict)); | |
3292 | win.width = mmap.width; | |
3293 | win.height = mmap.height; | |
3294 | pict.palette = mmap.format; | |
3295 | ||
3296 | if (w9968cf_stop_transfer(cam)) | |
3297 | goto ioctl_fail; | |
3298 | ||
3299 | /* This before set_window */ | |
3300 | if (w9968cf_set_picture(cam, pict)) | |
3301 | goto ioctl_fail; | |
3302 | ||
3303 | if (w9968cf_set_window(cam, win)) | |
3304 | goto ioctl_fail; | |
3305 | ||
3306 | if (w9968cf_start_transfer(cam)) | |
3307 | goto ioctl_fail; | |
3308 | ||
3309 | } else if (fr->queued) { | |
3310 | ||
3311 | DBG(6, "Wait until frame #%u is free", mmap.frame) | |
3312 | ||
3313 | err = wait_event_interruptible(cam->wait_queue, | |
3314 | cam->disconnected || | |
3315 | (!fr->queued)); | |
3316 | if (err) | |
3317 | return err; | |
3318 | if (cam->disconnected) | |
3319 | return -ENODEV; | |
3320 | } | |
3321 | ||
3322 | w9968cf_push_frame(cam, mmap.frame); | |
3323 | DBG(5, "VIDIOCMCAPTURE(%u): successfully called", mmap.frame) | |
3324 | return 0; | |
3325 | } | |
3326 | ||
3327 | case VIDIOCSYNC: /* wait until the capture of a frame is finished */ | |
3328 | { | |
3329 | unsigned int f_num; | |
3330 | struct w9968cf_frame_t* fr; | |
3331 | int err = 0; | |
3332 | ||
3333 | if (copy_from_user(&f_num, arg, sizeof(f_num))) | |
3334 | return -EFAULT; | |
3335 | ||
3336 | if (f_num >= cam->nbuffers) { | |
3337 | DBG(4, "Invalid frame number (%u). " | |
3338 | "VIDIOCMCAPTURE failed", f_num) | |
3339 | return -EINVAL; | |
3340 | } | |
3341 | ||
3342 | DBG(6, "VIDIOCSYNC called for frame #%u", f_num) | |
3343 | ||
3344 | fr = &cam->frame[f_num]; | |
3345 | ||
3346 | switch (fr->status) { | |
3347 | case F_UNUSED: | |
3348 | if (!fr->queued) { | |
3349 | DBG(4, "VIDIOSYNC: Frame #%u not requested!", | |
3350 | f_num) | |
3351 | return -EFAULT; | |
3352 | } | |
3353 | case F_ERROR: | |
3354 | case F_GRABBING: | |
3355 | err = wait_event_interruptible(cam->wait_queue, | |
3356 | (fr->status == F_READY) | |
3357 | || cam->disconnected); | |
3358 | if (err) | |
3359 | return err; | |
3360 | if (cam->disconnected) | |
3361 | return -ENODEV; | |
3362 | break; | |
3363 | case F_READY: | |
3364 | break; | |
3365 | } | |
3366 | ||
3367 | if (w9968cf_vpp) | |
3368 | w9968cf_postprocess_frame(cam, fr); | |
3369 | ||
3370 | fr->status = F_UNUSED; | |
3371 | ||
3372 | DBG(5, "VIDIOCSYNC(%u) successfully called", f_num) | |
3373 | return 0; | |
3374 | } | |
3375 | ||
3376 | case VIDIOCGUNIT:/* report the unit numbers of the associated devices*/ | |
3377 | { | |
3378 | struct video_unit unit = { | |
3379 | .video = cam->v4ldev->minor, | |
3380 | .vbi = VIDEO_NO_UNIT, | |
3381 | .radio = VIDEO_NO_UNIT, | |
3382 | .audio = VIDEO_NO_UNIT, | |
3383 | .teletext = VIDEO_NO_UNIT, | |
3384 | }; | |
3385 | ||
3386 | if (copy_to_user(arg, &unit, sizeof(unit))) | |
3387 | return -EFAULT; | |
3388 | ||
3389 | DBG(5, "VIDIOCGUNIT successfully called") | |
3390 | return 0; | |
3391 | } | |
3392 | ||
3393 | case VIDIOCKEY: | |
3394 | return 0; | |
3395 | ||
3396 | case VIDIOCGFBUF: | |
3397 | { | |
3398 | if (clear_user(arg, sizeof(struct video_buffer))) | |
3399 | return -EFAULT; | |
3400 | ||
3401 | DBG(5, "VIDIOCGFBUF successfully called") | |
3402 | return 0; | |
3403 | } | |
3404 | ||
3405 | case VIDIOCGTUNER: | |
3406 | { | |
3407 | struct video_tuner tuner; | |
3408 | if (copy_from_user(&tuner, arg, sizeof(tuner))) | |
3409 | return -EFAULT; | |
3410 | ||
3411 | if (tuner.tuner != 0) | |
3412 | return -EINVAL; | |
3413 | ||
3414 | strcpy(tuner.name, "no_tuner"); | |
3415 | tuner.rangelow = 0; | |
3416 | tuner.rangehigh = 0; | |
3417 | tuner.flags = VIDEO_TUNER_NORM; | |
3418 | tuner.mode = VIDEO_MODE_AUTO; | |
3419 | tuner.signal = 0xffff; | |
3420 | ||
3421 | if (copy_to_user(arg, &tuner, sizeof(tuner))) | |
3422 | return -EFAULT; | |
3423 | ||
3424 | DBG(5, "VIDIOCGTUNER successfully called") | |
3425 | return 0; | |
3426 | } | |
3427 | ||
3428 | case VIDIOCSTUNER: | |
3429 | { | |
3430 | struct video_tuner tuner; | |
3431 | if (copy_from_user(&tuner, arg, sizeof(tuner))) | |
3432 | return -EFAULT; | |
3433 | ||
3434 | if (tuner.tuner != 0) | |
3435 | return -EINVAL; | |
3436 | ||
3437 | if (tuner.mode != VIDEO_MODE_AUTO) | |
3438 | return -EINVAL; | |
3439 | ||
3440 | DBG(5, "VIDIOCSTUNER successfully called") | |
3441 | return 0; | |
3442 | } | |
3443 | ||
3444 | case VIDIOCSFBUF: | |
3445 | case VIDIOCCAPTURE: | |
3446 | case VIDIOCGFREQ: | |
3447 | case VIDIOCSFREQ: | |
3448 | case VIDIOCGAUDIO: | |
3449 | case VIDIOCSAUDIO: | |
3450 | case VIDIOCSPLAYMODE: | |
3451 | case VIDIOCSWRITEMODE: | |
3452 | case VIDIOCGPLAYINFO: | |
3453 | case VIDIOCSMICROCODE: | |
3454 | case VIDIOCGVBIFMT: | |
3455 | case VIDIOCSVBIFMT: | |
3456 | DBG(4, "Unsupported V4L1 IOCtl: VIDIOC%s " | |
3457 | "(type 0x%01X, " | |
3458 | "n. 0x%01X, " | |
3459 | "dir. 0x%01X, " | |
3460 | "size 0x%02X)", | |
3461 | V4L1_IOCTL(cmd), | |
3462 | _IOC_TYPE(cmd),_IOC_NR(cmd),_IOC_DIR(cmd),_IOC_SIZE(cmd)) | |
3463 | ||
3464 | return -EINVAL; | |
3465 | ||
3466 | default: | |
3467 | DBG(4, "Invalid V4L1 IOCtl: VIDIOC%s " | |
3468 | "type 0x%01X, " | |
3469 | "n. 0x%01X, " | |
3470 | "dir. 0x%01X, " | |
3471 | "size 0x%02X", | |
3472 | V4L1_IOCTL(cmd), | |
3473 | _IOC_TYPE(cmd),_IOC_NR(cmd),_IOC_DIR(cmd),_IOC_SIZE(cmd)) | |
3474 | ||
3475 | return -ENOIOCTLCMD; | |
3476 | ||
3477 | } /* end of switch */ | |
3478 | ||
3479 | ioctl_fail: | |
3480 | cam->misconfigured = 1; | |
3481 | DBG(1, "VIDIOC%s failed because of hardware problems. " | |
3482 | "To use the camera, close and open it again.", V4L1_IOCTL(cmd)) | |
3483 | return -EFAULT; | |
3484 | } | |
3485 | ||
3486 | ||
3487 | static struct file_operations w9968cf_fops = { | |
3488 | .owner = THIS_MODULE, | |
3489 | .open = w9968cf_open, | |
3490 | .release = w9968cf_release, | |
3491 | .read = w9968cf_read, | |
3492 | .ioctl = w9968cf_ioctl, | |
3493 | .mmap = w9968cf_mmap, | |
3494 | .llseek = no_llseek, | |
3495 | }; | |
3496 | ||
3497 | ||
3498 | ||
3499 | /**************************************************************************** | |
3500 | * USB probe and V4L registration, disconnect and id_table[] definition * | |
3501 | ****************************************************************************/ | |
3502 | ||
3503 | static int | |
3504 | w9968cf_usb_probe(struct usb_interface* intf, const struct usb_device_id* id) | |
3505 | { | |
3506 | struct usb_device *udev = interface_to_usbdev(intf); | |
3507 | struct w9968cf_device* cam; | |
3508 | int err = 0; | |
3509 | enum w9968cf_model_id mod_id; | |
3510 | struct list_head* ptr; | |
3511 | u8 sc = 0; /* number of simultaneous cameras */ | |
3512 | static unsigned short dev_nr = 0; /* we are handling device number n */ | |
3513 | ||
3514 | if (le16_to_cpu(udev->descriptor.idVendor) == winbond_id_table[0].idVendor && | |
3515 | le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[0].idProduct) | |
3516 | mod_id = W9968CF_MOD_CLVBWGP; /* see camlist[] table */ | |
3517 | else if (le16_to_cpu(udev->descriptor.idVendor) == winbond_id_table[1].idVendor && | |
3518 | le16_to_cpu(udev->descriptor.idProduct) == winbond_id_table[1].idProduct) | |
3519 | mod_id = W9968CF_MOD_GENERIC; /* see camlist[] table */ | |
3520 | else | |
3521 | return -ENODEV; | |
3522 | ||
3523 | cam = (struct w9968cf_device*) | |
3524 | kmalloc(sizeof(struct w9968cf_device), GFP_KERNEL); | |
3525 | if (!cam) | |
3526 | return -ENOMEM; | |
3527 | ||
3528 | memset(cam, 0, sizeof(*cam)); | |
3529 | ||
3530 | init_MUTEX(&cam->dev_sem); | |
3531 | down(&cam->dev_sem); | |
3532 | ||
3533 | cam->usbdev = udev; | |
3534 | /* NOTE: a local copy is used to avoid possible race conditions */ | |
3535 | memcpy(&cam->dev, &udev->dev, sizeof(struct device)); | |
3536 | ||
3537 | DBG(2, "%s detected", symbolic(camlist, mod_id)) | |
3538 | ||
3539 | if (simcams > W9968CF_MAX_DEVICES) | |
3540 | simcams = W9968CF_SIMCAMS; | |
3541 | ||
3542 | /* How many cameras are connected ? */ | |
3543 | down(&w9968cf_devlist_sem); | |
3544 | list_for_each(ptr, &w9968cf_dev_list) | |
3545 | sc++; | |
3546 | up(&w9968cf_devlist_sem); | |
3547 | ||
3548 | if (sc >= simcams) { | |
3549 | DBG(2, "Device rejected: too many connected cameras " | |
3550 | "(max. %u)", simcams) | |
3551 | err = -EPERM; | |
3552 | goto fail; | |
3553 | } | |
3554 | ||
3555 | ||
3556 | /* Allocate 2 bytes of memory for camera control USB transfers */ | |
0e8eb0f0 | 3557 | if (!(cam->control_buffer = kmalloc(2, GFP_KERNEL))) { |
1da177e4 LT |
3558 | DBG(1,"Couldn't allocate memory for camera control transfers") |
3559 | err = -ENOMEM; | |
3560 | goto fail; | |
3561 | } | |
3562 | memset(cam->control_buffer, 0, 2); | |
3563 | ||
3564 | /* Allocate 8 bytes of memory for USB data transfers to the FSB */ | |
0e8eb0f0 | 3565 | if (!(cam->data_buffer = kmalloc(8, GFP_KERNEL))) { |
1da177e4 LT |
3566 | DBG(1, "Couldn't allocate memory for data " |
3567 | "transfers to the FSB") | |
3568 | err = -ENOMEM; | |
3569 | goto fail; | |
3570 | } | |
3571 | memset(cam->data_buffer, 0, 8); | |
3572 | ||
3573 | /* Register the V4L device */ | |
3574 | cam->v4ldev = video_device_alloc(); | |
3575 | if (!cam->v4ldev) { | |
3576 | DBG(1, "Could not allocate memory for a V4L structure") | |
3577 | err = -ENOMEM; | |
3578 | goto fail; | |
3579 | } | |
3580 | ||
3581 | strcpy(cam->v4ldev->name, symbolic(camlist, mod_id)); | |
3582 | cam->v4ldev->owner = THIS_MODULE; | |
3583 | cam->v4ldev->type = VID_TYPE_CAPTURE | VID_TYPE_SCALES; | |
3584 | cam->v4ldev->hardware = VID_HARDWARE_W9968CF; | |
3585 | cam->v4ldev->fops = &w9968cf_fops; | |
3586 | cam->v4ldev->minor = video_nr[dev_nr]; | |
3587 | cam->v4ldev->release = video_device_release; | |
3588 | video_set_drvdata(cam->v4ldev, cam); | |
3589 | cam->v4ldev->dev = &cam->dev; | |
3590 | ||
3591 | err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER, | |
3592 | video_nr[dev_nr]); | |
3593 | if (err) { | |
3594 | DBG(1, "V4L device registration failed") | |
3595 | if (err == -ENFILE && video_nr[dev_nr] == -1) | |
3596 | DBG(2, "Couldn't find a free /dev/videoX node") | |
3597 | video_nr[dev_nr] = -1; | |
3598 | dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
3599 | goto fail; | |
3600 | } | |
3601 | ||
3602 | DBG(2, "V4L device registered as /dev/video%d", cam->v4ldev->minor) | |
3603 | ||
3604 | /* Set some basic constants */ | |
3605 | w9968cf_configure_camera(cam, udev, mod_id, dev_nr); | |
3606 | ||
3607 | /* Add a new entry into the list of V4L registered devices */ | |
3608 | down(&w9968cf_devlist_sem); | |
3609 | list_add(&cam->v4llist, &w9968cf_dev_list); | |
3610 | up(&w9968cf_devlist_sem); | |
3611 | dev_nr = (dev_nr < W9968CF_MAX_DEVICES-1) ? dev_nr+1 : 0; | |
3612 | ||
3613 | w9968cf_turn_on_led(cam); | |
3614 | ||
3615 | w9968cf_i2c_init(cam); | |
3616 | ||
3617 | usb_set_intfdata(intf, cam); | |
3618 | up(&cam->dev_sem); | |
3619 | return 0; | |
3620 | ||
3621 | fail: /* Free unused memory */ | |
1bc3c9e1 JJ |
3622 | kfree(cam->control_buffer); |
3623 | kfree(cam->data_buffer); | |
1da177e4 LT |
3624 | if (cam->v4ldev) |
3625 | video_device_release(cam->v4ldev); | |
3626 | up(&cam->dev_sem); | |
3627 | kfree(cam); | |
3628 | return err; | |
3629 | } | |
3630 | ||
3631 | ||
3632 | static void w9968cf_usb_disconnect(struct usb_interface* intf) | |
3633 | { | |
3634 | struct w9968cf_device* cam = | |
3635 | (struct w9968cf_device*)usb_get_intfdata(intf); | |
3636 | ||
3637 | down_write(&w9968cf_disconnect); | |
3638 | ||
3639 | if (cam) { | |
3640 | /* Prevent concurrent accesses to data */ | |
3641 | down(&cam->dev_sem); | |
3642 | ||
3643 | cam->disconnected = 1; | |
3644 | ||
3645 | DBG(2, "Disconnecting %s...", symbolic(camlist, cam->id)) | |
3646 | ||
3647 | wake_up_interruptible_all(&cam->open); | |
3648 | ||
3649 | if (cam->users) { | |
3650 | DBG(2, "The device is open (/dev/video%d)! " | |
3651 | "Process name: %s. Deregistration and memory " | |
3652 | "deallocation are deferred on close.", | |
3653 | cam->v4ldev->minor, cam->command) | |
3654 | cam->misconfigured = 1; | |
3655 | w9968cf_stop_transfer(cam); | |
3656 | wake_up_interruptible(&cam->wait_queue); | |
3657 | } else | |
3658 | w9968cf_release_resources(cam); | |
3659 | ||
3660 | up(&cam->dev_sem); | |
3661 | ||
3662 | if (!cam->users) | |
3663 | kfree(cam); | |
3664 | } | |
3665 | ||
3666 | up_write(&w9968cf_disconnect); | |
3667 | } | |
3668 | ||
3669 | ||
3670 | static struct usb_driver w9968cf_usb_driver = { | |
1da177e4 LT |
3671 | .name = "w9968cf", |
3672 | .id_table = winbond_id_table, | |
3673 | .probe = w9968cf_usb_probe, | |
3674 | .disconnect = w9968cf_usb_disconnect, | |
3675 | }; | |
3676 | ||
3677 | ||
3678 | ||
3679 | /**************************************************************************** | |
3680 | * Module init, exit and intermodule communication * | |
3681 | ****************************************************************************/ | |
3682 | ||
3683 | static int w9968cf_vppmod_detect(struct w9968cf_device* cam) | |
3684 | { | |
3685 | if (!w9968cf_vpp) | |
3686 | if (vppmod_load) | |
3687 | request_module("w9968cf-vpp"); | |
3688 | ||
3689 | down(&w9968cf_vppmod_lock); | |
3690 | ||
3691 | if (!w9968cf_vpp) { | |
3692 | DBG(4, "Video post-processing module not detected") | |
3693 | w9968cf_adjust_configuration(cam); | |
3694 | goto out; | |
3695 | } | |
3696 | ||
3697 | if (!try_module_get(w9968cf_vpp->owner)) { | |
3698 | DBG(1, "Couldn't increment the reference count of " | |
3699 | "the video post-processing module") | |
3700 | up(&w9968cf_vppmod_lock); | |
3701 | return -ENOSYS; | |
3702 | } | |
3703 | ||
3704 | w9968cf_vpp->busy++; | |
3705 | ||
3706 | DBG(5, "Video post-processing module detected") | |
3707 | ||
3708 | out: | |
3709 | up(&w9968cf_vppmod_lock); | |
3710 | return 0; | |
3711 | } | |
3712 | ||
3713 | ||
3714 | static void w9968cf_vppmod_release(struct w9968cf_device* cam) | |
3715 | { | |
3716 | down(&w9968cf_vppmod_lock); | |
3717 | ||
3718 | if (w9968cf_vpp && w9968cf_vpp->busy) { | |
3719 | module_put(w9968cf_vpp->owner); | |
3720 | w9968cf_vpp->busy--; | |
3721 | wake_up(&w9968cf_vppmod_wait); | |
3722 | DBG(5, "Video post-processing module released") | |
3723 | } | |
3724 | ||
3725 | up(&w9968cf_vppmod_lock); | |
3726 | } | |
3727 | ||
3728 | ||
3729 | int w9968cf_vppmod_register(struct w9968cf_vpp_t* vpp) | |
3730 | { | |
3731 | down(&w9968cf_vppmod_lock); | |
3732 | ||
3733 | if (w9968cf_vpp) { | |
3734 | KDBG(1, "Video post-processing module already registered") | |
3735 | up(&w9968cf_vppmod_lock); | |
3736 | return -EINVAL; | |
3737 | } | |
3738 | ||
3739 | w9968cf_vpp = vpp; | |
3740 | w9968cf_vpp->busy = 0; | |
3741 | ||
3742 | KDBG(2, "Video post-processing module registered") | |
3743 | up(&w9968cf_vppmod_lock); | |
3744 | return 0; | |
3745 | } | |
3746 | ||
3747 | ||
3748 | int w9968cf_vppmod_deregister(struct w9968cf_vpp_t* vpp) | |
3749 | { | |
3750 | down(&w9968cf_vppmod_lock); | |
3751 | ||
3752 | if (!w9968cf_vpp) { | |
3753 | up(&w9968cf_vppmod_lock); | |
3754 | return -EINVAL; | |
3755 | } | |
3756 | ||
3757 | if (w9968cf_vpp != vpp) { | |
3758 | KDBG(1, "Only the owner can unregister the video " | |
3759 | "post-processing module") | |
3760 | up(&w9968cf_vppmod_lock); | |
3761 | return -EINVAL; | |
3762 | } | |
3763 | ||
3764 | if (w9968cf_vpp->busy) { | |
3765 | KDBG(2, "Video post-processing module busy. Wait for it to be " | |
3766 | "released...") | |
3767 | up(&w9968cf_vppmod_lock); | |
3768 | wait_event(w9968cf_vppmod_wait, !w9968cf_vpp->busy); | |
3769 | w9968cf_vpp = NULL; | |
3770 | goto out; | |
3771 | } | |
3772 | ||
3773 | w9968cf_vpp = NULL; | |
3774 | ||
3775 | up(&w9968cf_vppmod_lock); | |
3776 | ||
3777 | out: | |
3778 | KDBG(2, "Video post-processing module unregistered") | |
3779 | return 0; | |
3780 | } | |
3781 | ||
3782 | ||
3783 | static int __init w9968cf_module_init(void) | |
3784 | { | |
3785 | int err; | |
3786 | ||
3787 | KDBG(2, W9968CF_MODULE_NAME" "W9968CF_MODULE_VERSION) | |
3788 | KDBG(3, W9968CF_MODULE_AUTHOR) | |
3789 | ||
3790 | if (ovmod_load) | |
3791 | request_module("ovcamchip"); | |
3792 | ||
3793 | if ((err = usb_register(&w9968cf_usb_driver))) | |
3794 | return err; | |
3795 | ||
3796 | return 0; | |
3797 | } | |
3798 | ||
3799 | ||
3800 | static void __exit w9968cf_module_exit(void) | |
3801 | { | |
3802 | /* w9968cf_usb_disconnect() will be called */ | |
3803 | usb_deregister(&w9968cf_usb_driver); | |
3804 | ||
3805 | KDBG(2, W9968CF_MODULE_NAME" deregistered") | |
3806 | } | |
3807 | ||
3808 | ||
3809 | module_init(w9968cf_module_init); | |
3810 | module_exit(w9968cf_module_exit); | |
3811 | ||
3812 | ||
3813 | EXPORT_SYMBOL(w9968cf_vppmod_register); | |
3814 | EXPORT_SYMBOL(w9968cf_vppmod_deregister); |