#ifndef cpia_h
#define cpia_h
/*
* CPiA Parallel Port Video4Linux driver
*
* Supports CPiA based parallel port Video Camera's.
*
* (C) Copyright 1999 Bas Huisman,
* Peter Pregler,
* Scott J. Bertin,
* VLSI Vision Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define CPIA_MAJ_VER 1
#define CPIA_MIN_VER 2
#define CPIA_PATCH_VER 3
#define CPIA_PP_MAJ_VER CPIA_MAJ_VER
#define CPIA_PP_MIN_VER CPIA_MIN_VER
#define CPIA_PP_PATCH_VER CPIA_PATCH_VER
#define CPIA_USB_MAJ_VER CPIA_MAJ_VER
#define CPIA_USB_MIN_VER CPIA_MIN_VER
#define CPIA_USB_PATCH_VER CPIA_PATCH_VER
#define CPIA_MAX_FRAME_SIZE_UNALIGNED (352 * 288 * 4) /* CIF at RGB32 */
#define CPIA_MAX_FRAME_SIZE ((CPIA_MAX_FRAME_SIZE_UNALIGNED + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)) /* align above to PAGE_SIZE */
#ifdef __KERNEL__
#include <asm/uaccess.h>
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <linux/list.h>
#include <linux/smp_lock.h>
#include <linux/mutex.h>
struct cpia_camera_ops
{
/* open sets privdata to point to structure for this camera.
* Returns negative value on error, otherwise 0.
*/
int (*open)(void *privdata);
/* Registers callback function cb to be called with cbdata
* when an image is ready. If cb is NULL, only single image grabs
* should be used. cb should immediately call streamRead to read
* the data or data may be lost. Returns negative value on error,
* otherwise 0.
*/
int (*registerCallback)(void *privdata, void (*cb)(void *cbdata),
void *cbdata);
/* transferCmd sends commands to the camera. command MUST point to
* an 8 byte buffer in kernel space. data can be NULL if no extra
* data is needed. The size of the data is given by the last 2
* bytes of command. data must also point to memory in kernel space.
* Returns negative value on error, otherwise 0.
*/
int (*transferCmd)(void *privdata, u8 *command, u8 *data);
/* streamStart initiates stream capture mode.
* Returns negative value on error, otherwise 0.
*/
int (*streamStart)(void *privdata);
/* streamStop terminates stream capture mode.
* Returns negative value on error, otherwise 0.
*/
int (*streamStop)(void *privdata);
/* streamRead reads a frame from the camera. buffer points to a
* buffer large enough to hold a complete frame in kernel space.
* noblock indicates if this should be a non blocking read.
* Returns the number of bytes read, or negative value on error.
*/
int (*streamRead)(void *privdata, u8 *buffer, int noblock);
/* close disables the device until open() is called again.
* Returns negative value on error, otherwise 0.
*/
int (*close)(void *privdata);
/* If wait_for_stream_ready is non-zero, wait until the streamState
* is STREAM_READY before calling streamRead.
*/
int wait_for_stream_ready;
/*
* Used to maintain lowlevel module usage counts
*/
struct module *owner;
};
struct cpia_frame {
u8 *data;
int count;
int width;
int height;
volatile int state;
};
struct cam_params {
struct {
u8 firmwareVersion;
u8 firmwareRevision;
u8 vcVersion;
u8 vcRevision;
} version;
struct {
u16 vendor;
u16 product;
u16 deviceRevision;
} pnpID;
struct {
u8 vpVersion;
u8 vpRevision;
u16 cameraHeadID;
} vpVersion;
struct {
u8 systemState;
u8 grabState;
u8 streamState;
u8 fatalError;
u8 cmdError;
u8 debugFlags;
u8 vpStatus;
u8 errorCode;
} status;
struct {
u8 brightness;
u8 contrast;
u8 saturation;
} colourParams;
struct {
u8 gainMode;
u8 expMode;
u8 compMode;
u8 centreWeight;
u8 gain;
u8 fineExp;
u8 coarseExpLo;
u8 coarseExpHi;
u8 redComp;
u8 green1Comp;
u8 green2Comp;
u8 blueComp;
} exposure;
struct {
u8 balanceMode;
u8 redGain;
u8 greenGain;
u8 blueGain;
} colourBalance;
struct {
u8 divisor;
u8 baserate;
} sensorFps;
struct {
u8 gain1;
u8 gain2;
u8 gain4;
u8 gain8;
} apcor;
struct {
u8 disabled;
u8 flickerMode;
u8 coarseJump;
int allowableOverExposure;
} flickerControl;
struct {
u8 gain1;
u8 gain2;
u8 gain4;
u8 gain8;
} vlOffset;
struct {
u8 mode;
u8 decimation;
} compression;
struct {
u8 frTargeting;
u8 targetFR;
u8 targetQ;
} compressionTarget;
struct {
u8 yThreshold;
u8 uvThreshold;
} yuvThreshold;
struct {
u8 hysteresis;
u8 threshMax;
u8 smallStep;
u8 largeStep;
u8 decimationHysteresis;
u8 frDiffStepThresh;
u8 qDiffStepThresh;
u8 decimationThreshMod;
} compressionParams;
struct {
u8 videoSize; /* CIF/QCIF */
u8 subSample;
u8 yuvOrder;
} format;
struct { /* Intel QX3 specific data */
u8 qx3_detected; /* a QX3 is present */
u8 toplight; /* top light lit , R/W */
u8 bottomlight; /* bottom light lit, R/W */
u8 button; /* snapshot button pressed (R/O) */
u8 cradled; /* microscope is in cradle (R/O) */
} qx3;
struct {
u8 colStart; /* skip first 8*colStart pixels */
u8 colEnd; /* finish at 8*colEnd pixels */
u8 rowStart; /* skip first 4*rowStart lines */
u8 rowEnd; /* finish at 4*rowEnd lines */
} roi;
u8 ecpTiming;
u8 streamStartLine;
};
enum v4l_camstates {
CPIA_V4L_IDLE = 0,
CPIA_V4L_ERROR,
CPIA_V4L_COMMAND,
CPIA_V4L_GRABBING,
CPIA_V4L_STREAMING,
CPIA_V4L_STREAMING_PAUSED,
};
#define FRAME_NUM 2 /* double buffering for now */
struct cam_data {
struct list_head cam_data_list;
struct mutex busy_lock; /* guard against SMP multithreading */
struct cpia_camera_ops *ops; /* lowlevel driver operations */
void *lowlevel_data; /* private data for lowlevel driver */
u8 *raw_image; /* buffer for raw image data */
struct cpia_frame decompressed_frame;
/* buffer to hold decompressed frame */
int image_size; /* sizeof last decompressed image */
int open_count; /* # of process that have camera open */
/* camera status */
int fps; /* actual fps reported by the camera */
int transfer_rate; /* transfer rate from camera in kB/s */
u8 mainsFreq; /* for flicker control */
/* proc interface */
struct mutex param_lock; /* params lock for this camera */
struct cam_params params; /* camera settings */
struct proc_dir_entry *proc_entry; /* /proc/cpia/videoX */
/* v4l */
int video_size; /* VIDEO_SIZE_ */
volatile enum v4l_camstates camstate; /* v4l layer status */
struct video_device vdev; /* v4l videodev */
struct video_picture vp; /* v4l camera settings */
struct video_window vw; /* v4l capture area */
struct video_capture vc; /* v4l subcapture area */
/* mmap interface */
int curframe; /* the current frame to grab into */
u8 *frame_buf; /* frame buffer data */
struct cpia_frame frame[FRAME_NUM];
/* FRAME_NUM-buffering, so we need a array */
int first_frame;
int mmap_kludge; /* 'wrong' byte order for mmap */
volatile u32 cmd_queue; /* queued commands */
int exposure_status; /* EXPOSURE_* */
int exposure_count; /* number of frames at this status */
};
/* cpia_register_camera is called by low level driver for each camera.
* A unique camera number is returned, or a negative value on error */
struct cam_data *cpia_register_camera(struct cpia_camera_ops *ops, void *lowlevel);
/* cpia_unregister_camera is called by low level driver when a camera
* is removed. This must not fail. */
void cpia_unregister_camera(struct cam_data *cam);
/* raw CIF + 64 byte header + (2 bytes line_length + EOL) per line + 4*EOI +
* one byte 16bit DMA alignment
*/
#define CPIA_MAX_IMAGE_SIZE ((352*288*2)+64+(288*3)+5)
/* constant value's */
#define MAGIC_0 0x19
#define MAGIC_1 0x68
#define DATA_IN 0xC0
#define DATA_OUT 0x40
#define VIDEOSIZE_QCIF 0 /* 176x144 */
#define VIDEOSIZE_CIF 1 /* 352x288 */
#define VIDEOSIZE_SIF 2 /* 320x240 */
#define VIDEOSIZE_QSIF 3 /* 160x120 */
#define VIDEOSIZE_48_48 4 /* where no one has gone before, iconsize! */
#define VIDEOSIZE_64_48 5
#define VIDEOSIZE_128_96 6
#define VIDEOSIZE_160_120 VIDEOSIZE_QSIF
#define VIDEOSIZE_176_144 VIDEOSIZE_QCIF
#define VIDEOSIZE_192_144 7
#define VIDEOSIZE_224_168 8
#define VIDEOSIZE_256_192 9
#define VIDEOSIZE_288_216 10
#define VIDEOSIZE_320_240 VIDEOSIZE_SIF
#define VIDEOSIZE_352_288 VIDEOSIZE_CIF
#define VIDEOSIZE_88_72 11 /* quarter CIF */
#define SUBSAMPLE_420 0
#define SUBSAMPLE_422 1
#define YUVORDER_YUYV 0
#define YUVORDER_UYVY 1
#define NOT_COMPRESSED 0
#define COMPRESSED 1
#define NO_DECIMATION 0
#define DECIMATION_ENAB 1
#define EOI 0xff /* End Of Image */
#define EOL 0xfd /* End Of Line */
#define FRAME_HEADER_SIZE 64
/* Image grab modes */
#define CPIA_GRAB_SINGLE 0
#define CPIA_GRAB_CONTINUOUS 1
/* Compression parameters */
#define CPIA_COMPRESSION_NONE 0
#define CPIA_COMPRESSION_AUTO 1
#define CPIA_COMPRESSION_MANUAL 2
#define CPIA_COMPRESSION_TARGET_QUALITY 0
#define CPIA_COMPRESSION_TARGET_FRAMERATE 1
/* Return offsets for GetCameraState */
#define SYSTEMSTATE 0
#define GRABSTATE 1
#define STREAMSTATE 2
#define FATALERROR 3
#define CMDERROR 4
#define DEBUGFLAGS 5
#define VPSTATUS 6
#define ERRORCODE 7
/* SystemState */
#define UNINITIALISED_STATE 0
#define PASS_THROUGH_STATE 1
#define LO_POWER_STATE 2
#define HI_POWER_STATE 3
#define WARM_BOOT_STATE 4
/* GrabState */
#define GRAB_IDLE 0
#define GRAB_ACTIVE 1
#define GRAB_DONE 2
/* StreamState */
#define STREAM_NOT_READY 0
#define STREAM_READY 1
#define STREAM_OPEN 2
#define STREAM_PAUSED 3
#define STREAM_FINISHED 4
/* Fatal Error, CmdError, and DebugFlags */
#define CPIA_FLAG 1
#define SYSTEM_FLAG 2
#define INT_CTRL_FLAG 4
#define PROCESS_FLAG 8
#define COM_FLAG 16
#define VP_CTRL_FLAG 32
#define CAPTURE_FLAG 64
#define DEBUG_FLAG 128
/* VPStatus */
#define VP_STATE_OK 0x00
#define VP_STATE_FAILED_VIDEOINIT 0x01
#define VP_STATE_FAILED_AECACBINIT 0x02
#define VP_STATE_AEC_MAX 0x04
#define VP_STATE_ACB_BMAX 0x08
#define VP_STATE_ACB_RMIN 0x10
#define VP_STATE_ACB_GMIN 0x20
#define VP_STATE_ACB_RMAX 0x40
#define VP_STATE_ACB_GMAX 0x80
/* default (minimum) compensation values */
#define COMP_RED 220
#define COMP_GREEN1 214
#define COMP_GREEN2 COMP_GREEN1
#define COMP_BLUE 230
/* exposure status */
#define EXPOSURE_VERY_LIGHT 0
#define EXPOSURE_LIGHT 1
#define EXPOSURE_NORMAL 2
#define EXPOSURE_DARK 3
#define EXPOSURE_VERY_DARK 4
/* ErrorCode */
#define ERROR_FLICKER_BELOW_MIN_EXP 0x01 /*flicker exposure got below minimum exposure */
#define ALOG(fmt,args...) printk(fmt, ##args)
#define LOG(fmt,args...) ALOG(KERN_INFO __FILE__ ":%s(%d):" fmt, __FUNCTION__ , __LINE__ , ##args)
#ifdef _CPIA_DEBUG_
#define ADBG(fmt,args...) printk(fmt, jiffies, ##args)
#define DBG(fmt,args...) ADBG(KERN_DEBUG __FILE__" (%ld):%s(%d):" fmt, __FUNCTION__, __LINE__ , ##args)
#else
#define DBG(fmn,args...) do {} while(0)
#endif
#define DEB_BYTE(p)\
DBG("%1d %1d %1d %1d %1d %1d %1d %1d \n",\
(p)&0x80?1:0, (p)&0x40?1:0, (p)&0x20?1:0, (p)&0x10?1:0,\
(p)&0x08?1:0, (p)&0x04?1:0, (p)&0x02?1:0, (p)&0x01?1:0);
#endif /* __KERNEL__ */
#endif /* cpia_h */
