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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef cpia_h
2#define cpia_h
3
4/*
5 * CPiA Parallel Port Video4Linux driver
6 *
7 * Supports CPiA based parallel port Video Camera's.
8 *
9 * (C) Copyright 1999 Bas Huisman,
10 * Peter Pregler,
11 * Scott J. Bertin,
12 * VLSI Vision Ltd.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#define CPIA_MAJ_VER 1
30#define CPIA_MIN_VER 2
31#define CPIA_PATCH_VER 3
32
33#define CPIA_PP_MAJ_VER CPIA_MAJ_VER
34#define CPIA_PP_MIN_VER CPIA_MIN_VER
35#define CPIA_PP_PATCH_VER CPIA_PATCH_VER
36
37#define CPIA_USB_MAJ_VER CPIA_MAJ_VER
38#define CPIA_USB_MIN_VER CPIA_MIN_VER
39#define CPIA_USB_PATCH_VER CPIA_PATCH_VER
40
41#define CPIA_MAX_FRAME_SIZE_UNALIGNED (352 * 288 * 4) /* CIF at RGB32 */
42#define CPIA_MAX_FRAME_SIZE ((CPIA_MAX_FRAME_SIZE_UNALIGNED + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)) /* align above to PAGE_SIZE */
43
44#ifdef __KERNEL__
45
46#include <asm/uaccess.h>
47#include <linux/videodev.h>
Mauro Carvalho Chehab5e87efa2006-06-05 10:26:32 -030048#include <media/v4l2-common.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/list.h>
Ingo Molnar3593cab2006-02-07 06:49:14 -020050#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
52struct cpia_camera_ops
53{
54 /* open sets privdata to point to structure for this camera.
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030055 * Returns negative value on error, otherwise 0.
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 */
57 int (*open)(void *privdata);
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030058
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 /* Registers callback function cb to be called with cbdata
60 * when an image is ready. If cb is NULL, only single image grabs
61 * should be used. cb should immediately call streamRead to read
62 * the data or data may be lost. Returns negative value on error,
63 * otherwise 0.
64 */
65 int (*registerCallback)(void *privdata, void (*cb)(void *cbdata),
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030066 void *cbdata);
67
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 /* transferCmd sends commands to the camera. command MUST point to
69 * an 8 byte buffer in kernel space. data can be NULL if no extra
70 * data is needed. The size of the data is given by the last 2
71 * bytes of command. data must also point to memory in kernel space.
72 * Returns negative value on error, otherwise 0.
73 */
74 int (*transferCmd)(void *privdata, u8 *command, u8 *data);
75
76 /* streamStart initiates stream capture mode.
77 * Returns negative value on error, otherwise 0.
78 */
79 int (*streamStart)(void *privdata);
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030080
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 /* streamStop terminates stream capture mode.
82 * Returns negative value on error, otherwise 0.
83 */
84 int (*streamStop)(void *privdata);
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030085
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 /* streamRead reads a frame from the camera. buffer points to a
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030087 * buffer large enough to hold a complete frame in kernel space.
88 * noblock indicates if this should be a non blocking read.
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 * Returns the number of bytes read, or negative value on error.
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030090 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 int (*streamRead)(void *privdata, u8 *buffer, int noblock);
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030092
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 /* close disables the device until open() is called again.
94 * Returns negative value on error, otherwise 0.
95 */
96 int (*close)(void *privdata);
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -030097
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 /* If wait_for_stream_ready is non-zero, wait until the streamState
99 * is STREAM_READY before calling streamRead.
100 */
101 int wait_for_stream_ready;
102
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300103 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 * Used to maintain lowlevel module usage counts
105 */
106 struct module *owner;
107};
108
109struct cpia_frame {
110 u8 *data;
111 int count;
112 int width;
113 int height;
114 volatile int state;
115};
116
117struct cam_params {
118 struct {
119 u8 firmwareVersion;
120 u8 firmwareRevision;
121 u8 vcVersion;
122 u8 vcRevision;
123 } version;
124 struct {
125 u16 vendor;
126 u16 product;
127 u16 deviceRevision;
128 } pnpID;
129 struct {
130 u8 vpVersion;
131 u8 vpRevision;
132 u16 cameraHeadID;
133 } vpVersion;
134 struct {
135 u8 systemState;
136 u8 grabState;
137 u8 streamState;
138 u8 fatalError;
139 u8 cmdError;
140 u8 debugFlags;
141 u8 vpStatus;
142 u8 errorCode;
143 } status;
144 struct {
145 u8 brightness;
146 u8 contrast;
147 u8 saturation;
148 } colourParams;
149 struct {
150 u8 gainMode;
151 u8 expMode;
152 u8 compMode;
153 u8 centreWeight;
154 u8 gain;
155 u8 fineExp;
156 u8 coarseExpLo;
157 u8 coarseExpHi;
158 u8 redComp;
159 u8 green1Comp;
160 u8 green2Comp;
161 u8 blueComp;
162 } exposure;
163 struct {
164 u8 balanceMode;
165 u8 redGain;
166 u8 greenGain;
167 u8 blueGain;
168 } colourBalance;
169 struct {
170 u8 divisor;
171 u8 baserate;
172 } sensorFps;
173 struct {
174 u8 gain1;
175 u8 gain2;
176 u8 gain4;
177 u8 gain8;
178 } apcor;
179 struct {
180 u8 disabled;
181 u8 flickerMode;
182 u8 coarseJump;
183 int allowableOverExposure;
184 } flickerControl;
185 struct {
186 u8 gain1;
187 u8 gain2;
188 u8 gain4;
189 u8 gain8;
190 } vlOffset;
191 struct {
192 u8 mode;
193 u8 decimation;
194 } compression;
195 struct {
196 u8 frTargeting;
197 u8 targetFR;
198 u8 targetQ;
199 } compressionTarget;
200 struct {
201 u8 yThreshold;
202 u8 uvThreshold;
203 } yuvThreshold;
204 struct {
205 u8 hysteresis;
206 u8 threshMax;
207 u8 smallStep;
208 u8 largeStep;
209 u8 decimationHysteresis;
210 u8 frDiffStepThresh;
211 u8 qDiffStepThresh;
212 u8 decimationThreshMod;
213 } compressionParams;
214 struct {
215 u8 videoSize; /* CIF/QCIF */
216 u8 subSample;
217 u8 yuvOrder;
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300218 } format;
219 struct { /* Intel QX3 specific data */
220 u8 qx3_detected; /* a QX3 is present */
221 u8 toplight; /* top light lit , R/W */
222 u8 bottomlight; /* bottom light lit, R/W */
223 u8 button; /* snapshot button pressed (R/O) */
224 u8 cradled; /* microscope is in cradle (R/O) */
225 } qx3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 struct {
227 u8 colStart; /* skip first 8*colStart pixels */
228 u8 colEnd; /* finish at 8*colEnd pixels */
229 u8 rowStart; /* skip first 4*rowStart lines */
230 u8 rowEnd; /* finish at 4*rowEnd lines */
231 } roi;
232 u8 ecpTiming;
233 u8 streamStartLine;
234};
235
236enum v4l_camstates {
237 CPIA_V4L_IDLE = 0,
238 CPIA_V4L_ERROR,
239 CPIA_V4L_COMMAND,
240 CPIA_V4L_GRABBING,
241 CPIA_V4L_STREAMING,
242 CPIA_V4L_STREAMING_PAUSED,
243};
244
245#define FRAME_NUM 2 /* double buffering for now */
246
247struct cam_data {
248 struct list_head cam_data_list;
249
Trent Piepho7d0dc262006-04-09 18:48:04 -0300250 struct mutex busy_lock; /* guard against SMP multithreading */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 struct cpia_camera_ops *ops; /* lowlevel driver operations */
252 void *lowlevel_data; /* private data for lowlevel driver */
253 u8 *raw_image; /* buffer for raw image data */
254 struct cpia_frame decompressed_frame;
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300255 /* buffer to hold decompressed frame */
256 int image_size; /* sizeof last decompressed image */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 int open_count; /* # of process that have camera open */
258
259 /* camera status */
260 int fps; /* actual fps reported by the camera */
261 int transfer_rate; /* transfer rate from camera in kB/s */
262 u8 mainsFreq; /* for flicker control */
263
264 /* proc interface */
Ingo Molnar3593cab2006-02-07 06:49:14 -0200265 struct mutex param_lock; /* params lock for this camera */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 struct cam_params params; /* camera settings */
267 struct proc_dir_entry *proc_entry; /* /proc/cpia/videoX */
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300268
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 /* v4l */
270 int video_size; /* VIDEO_SIZE_ */
271 volatile enum v4l_camstates camstate; /* v4l layer status */
272 struct video_device vdev; /* v4l videodev */
273 struct video_picture vp; /* v4l camera settings */
274 struct video_window vw; /* v4l capture area */
275 struct video_capture vc; /* v4l subcapture area */
276
277 /* mmap interface */
278 int curframe; /* the current frame to grab into */
279 u8 *frame_buf; /* frame buffer data */
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300280 struct cpia_frame frame[FRAME_NUM];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 /* FRAME_NUM-buffering, so we need a array */
282
283 int first_frame;
284 int mmap_kludge; /* 'wrong' byte order for mmap */
285 volatile u32 cmd_queue; /* queued commands */
286 int exposure_status; /* EXPOSURE_* */
287 int exposure_count; /* number of frames at this status */
288};
289
290/* cpia_register_camera is called by low level driver for each camera.
291 * A unique camera number is returned, or a negative value on error */
292struct cam_data *cpia_register_camera(struct cpia_camera_ops *ops, void *lowlevel);
293
294/* cpia_unregister_camera is called by low level driver when a camera
295 * is removed. This must not fail. */
296void cpia_unregister_camera(struct cam_data *cam);
297
298/* raw CIF + 64 byte header + (2 bytes line_length + EOL) per line + 4*EOI +
299 * one byte 16bit DMA alignment
300 */
301#define CPIA_MAX_IMAGE_SIZE ((352*288*2)+64+(288*3)+5)
302
303/* constant value's */
304#define MAGIC_0 0x19
305#define MAGIC_1 0x68
306#define DATA_IN 0xC0
307#define DATA_OUT 0x40
308#define VIDEOSIZE_QCIF 0 /* 176x144 */
309#define VIDEOSIZE_CIF 1 /* 352x288 */
310#define VIDEOSIZE_SIF 2 /* 320x240 */
311#define VIDEOSIZE_QSIF 3 /* 160x120 */
312#define VIDEOSIZE_48_48 4 /* where no one has gone before, iconsize! */
313#define VIDEOSIZE_64_48 5
314#define VIDEOSIZE_128_96 6
315#define VIDEOSIZE_160_120 VIDEOSIZE_QSIF
316#define VIDEOSIZE_176_144 VIDEOSIZE_QCIF
317#define VIDEOSIZE_192_144 7
318#define VIDEOSIZE_224_168 8
319#define VIDEOSIZE_256_192 9
320#define VIDEOSIZE_288_216 10
321#define VIDEOSIZE_320_240 VIDEOSIZE_SIF
322#define VIDEOSIZE_352_288 VIDEOSIZE_CIF
323#define VIDEOSIZE_88_72 11 /* quarter CIF */
324#define SUBSAMPLE_420 0
325#define SUBSAMPLE_422 1
326#define YUVORDER_YUYV 0
327#define YUVORDER_UYVY 1
328#define NOT_COMPRESSED 0
329#define COMPRESSED 1
330#define NO_DECIMATION 0
331#define DECIMATION_ENAB 1
332#define EOI 0xff /* End Of Image */
333#define EOL 0xfd /* End Of Line */
334#define FRAME_HEADER_SIZE 64
335
336/* Image grab modes */
337#define CPIA_GRAB_SINGLE 0
338#define CPIA_GRAB_CONTINUOUS 1
339
340/* Compression parameters */
341#define CPIA_COMPRESSION_NONE 0
342#define CPIA_COMPRESSION_AUTO 1
343#define CPIA_COMPRESSION_MANUAL 2
344#define CPIA_COMPRESSION_TARGET_QUALITY 0
345#define CPIA_COMPRESSION_TARGET_FRAMERATE 1
346
347/* Return offsets for GetCameraState */
348#define SYSTEMSTATE 0
349#define GRABSTATE 1
350#define STREAMSTATE 2
351#define FATALERROR 3
352#define CMDERROR 4
353#define DEBUGFLAGS 5
354#define VPSTATUS 6
355#define ERRORCODE 7
356
357/* SystemState */
358#define UNINITIALISED_STATE 0
359#define PASS_THROUGH_STATE 1
360#define LO_POWER_STATE 2
361#define HI_POWER_STATE 3
362#define WARM_BOOT_STATE 4
363
364/* GrabState */
365#define GRAB_IDLE 0
366#define GRAB_ACTIVE 1
367#define GRAB_DONE 2
368
369/* StreamState */
370#define STREAM_NOT_READY 0
371#define STREAM_READY 1
372#define STREAM_OPEN 2
373#define STREAM_PAUSED 3
374#define STREAM_FINISHED 4
375
376/* Fatal Error, CmdError, and DebugFlags */
377#define CPIA_FLAG 1
378#define SYSTEM_FLAG 2
379#define INT_CTRL_FLAG 4
380#define PROCESS_FLAG 8
381#define COM_FLAG 16
382#define VP_CTRL_FLAG 32
383#define CAPTURE_FLAG 64
384#define DEBUG_FLAG 128
385
386/* VPStatus */
387#define VP_STATE_OK 0x00
388
389#define VP_STATE_FAILED_VIDEOINIT 0x01
390#define VP_STATE_FAILED_AECACBINIT 0x02
391#define VP_STATE_AEC_MAX 0x04
392#define VP_STATE_ACB_BMAX 0x08
393
394#define VP_STATE_ACB_RMIN 0x10
395#define VP_STATE_ACB_GMIN 0x20
396#define VP_STATE_ACB_RMAX 0x40
397#define VP_STATE_ACB_GMAX 0x80
398
399/* default (minimum) compensation values */
400#define COMP_RED 220
401#define COMP_GREEN1 214
402#define COMP_GREEN2 COMP_GREEN1
403#define COMP_BLUE 230
404
405/* exposure status */
406#define EXPOSURE_VERY_LIGHT 0
407#define EXPOSURE_LIGHT 1
408#define EXPOSURE_NORMAL 2
409#define EXPOSURE_DARK 3
410#define EXPOSURE_VERY_DARK 4
411
412/* ErrorCode */
413#define ERROR_FLICKER_BELOW_MIN_EXP 0x01 /*flicker exposure got below minimum exposure */
414#define ALOG(fmt,args...) printk(fmt, ##args)
415#define LOG(fmt,args...) ALOG(KERN_INFO __FILE__ ":%s(%d):" fmt, __FUNCTION__ , __LINE__ , ##args)
416
417#ifdef _CPIA_DEBUG_
418#define ADBG(fmt,args...) printk(fmt, jiffies, ##args)
419#define DBG(fmt,args...) ADBG(KERN_DEBUG __FILE__" (%ld):%s(%d):" fmt, __FUNCTION__, __LINE__ , ##args)
420#else
421#define DBG(fmn,args...) do {} while(0)
422#endif
423
424#define DEB_BYTE(p)\
425 DBG("%1d %1d %1d %1d %1d %1d %1d %1d \n",\
426 (p)&0x80?1:0, (p)&0x40?1:0, (p)&0x20?1:0, (p)&0x10?1:0,\
Mauro Carvalho Chehabd56410e2006-03-25 09:19:53 -0300427 (p)&0x08?1:0, (p)&0x04?1:0, (p)&0x02?1:0, (p)&0x01?1:0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
429#endif /* __KERNEL__ */
430
431#endif /* cpia_h */