/*
* cpia CPiA driver
*
* Supports CPiA based Video Camera's.
*
* (C) Copyright 1999-2000 Peter Pregler
* (C) Copyright 1999-2000 Scott J. Bertin
* (C) Copyright 1999-2000 Johannes Erdfelt <johannes@erdfelt.com>
* (C) Copyright 2000 STMicroelectronics
*
* 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_DEBUG_ for verbose debug output (see cpia.h) */
/* #define _CPIA_DEBUG_ 1 */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/ctype.h>
#include <linux/pagemap.h>
#include <asm/io.h>
#include <asm/semaphore.h>
#include <linux/wrapper.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
#include "cpia.h"
#ifdef CONFIG_VIDEO_CPIA_PP
extern int cpia_pp_init(void);
#endif
#ifdef CONFIG_VIDEO_CPIA_USB
extern int cpia_usb_init(void);
#endif
static int video_nr = -1;
#ifdef MODULE
MODULE_PARM(video_nr,"i");
MODULE_AUTHOR("Scott J. Bertin <sbertin@securenym.net> & Peter Pregler <Peter_Pregler@email.com> & Johannes Erdfelt <johannes@erdfeld.com>");
MODULE_DESCRIPTION("V4L-driver for Vision CPiA based cameras");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("video");
#endif
#define ABOUT "V4L-Driver for Vision CPiA based cameras"
#ifndef VID_HARDWARE_CPIA
#define VID_HARDWARE_CPIA 24 /* FIXME -> from linux/videodev.h */
#endif
#define CPIA_MODULE_CPIA (0<<5)
#define CPIA_MODULE_SYSTEM (1<<5)
#define CPIA_MODULE_VP_CTRL (5<<5)
#define CPIA_MODULE_CAPTURE (6<<5)
#define CPIA_MODULE_DEBUG (7<<5)
#define INPUT (DATA_IN << 8)
#define OUTPUT (DATA_OUT << 8)
#define CPIA_COMMAND_GetCPIAVersion (INPUT | CPIA_MODULE_CPIA | 1)
#define CPIA_COMMAND_GetPnPID (INPUT | CPIA_MODULE_CPIA | 2)
#define CPIA_COMMAND_GetCameraStatus (INPUT | CPIA_MODULE_CPIA | 3)
#define CPIA_COMMAND_GotoHiPower (OUTPUT | CPIA_MODULE_CPIA | 4)
#define CPIA_COMMAND_GotoLoPower (OUTPUT | CPIA_MODULE_CPIA | 5)
#define CPIA_COMMAND_GotoSuspend (OUTPUT | CPIA_MODULE_CPIA | 7)
#define CPIA_COMMAND_GotoPassThrough (OUTPUT | CPIA_MODULE_CPIA | 8)
#define CPIA_COMMAND_ModifyCameraStatus (OUTPUT | CPIA_MODULE_CPIA | 10)
#define CPIA_COMMAND_ReadVCRegs (INPUT | CPIA_MODULE_SYSTEM | 1)
#define CPIA_COMMAND_WriteVCReg (OUTPUT | CPIA_MODULE_SYSTEM | 2)
#define CPIA_COMMAND_ReadMCPorts (INPUT | CPIA_MODULE_SYSTEM | 3)
#define CPIA_COMMAND_WriteMCPort (OUTPUT | CPIA_MODULE_SYSTEM | 4)
#define CPIA_COMMAND_SetBaudRate (OUTPUT | CPIA_MODULE_SYSTEM | 5)
#define CPIA_COMMAND_SetECPTiming (OUTPUT | CPIA_MODULE_SYSTEM | 6)
#define CPIA_COMMAND_ReadIDATA (INPUT | CPIA_MODULE_SYSTEM | 7)
#define CPIA_COMMAND_WriteIDATA (OUTPUT | CPIA_MODULE_SYSTEM | 8)
#define CPIA_COMMAND_GenericCall (OUTPUT | CPIA_MODULE_SYSTEM | 9)
#define CPIA_COMMAND_I2CStart (OUTPUT | CPIA_MODULE_SYSTEM | 10)
#define CPIA_COMMAND_I2CStop (OUTPUT | CPIA_MODULE_SYSTEM | 11)
#define CPIA_COMMAND_I2CWrite (OUTPUT | CPIA_MODULE_SYSTEM | 12)
#define CPIA_COMMAND_I2CRead (INPUT | CPIA_MODULE_SYSTEM | 13)
#define CPIA_COMMAND_GetVPVersion (INPUT | CPIA_MODULE_VP_CTRL | 1)
#define CPIA_COMMAND_SetColourParams (OUTPUT | CPIA_MODULE_VP_CTRL | 3)
#define CPIA_COMMAND_SetExposure (OUTPUT | CPIA_MODULE_VP_CTRL | 4)
#define CPIA_COMMAND_SetColourBalance (OUTPUT | CPIA_MODULE_VP_CTRL | 6)
#define CPIA_COMMAND_SetSensorFPS (OUTPUT | CPIA_MODULE_VP_CTRL | 7)
#define CPIA_COMMAND_SetVPDefaults (OUTPUT | CPIA_MODULE_VP_CTRL | 8)
#define CPIA_COMMAND_SetApcor (OUTPUT | CPIA_MODULE_VP_CTRL | 9)
#define CPIA_COMMAND_SetFlickerCtrl (OUTPUT | CPIA_MODULE_VP_CTRL | 10)
#define CPIA_COMMAND_SetVLOffset (OUTPUT | CPIA_MODULE_VP_CTRL | 11)
#define CPIA_COMMAND_GetColourParams (INPUT | CPIA_MODULE_VP_CTRL | 16)
#define CPIA_COMMAND_GetColourBalance (INPUT | CPIA_MODULE_VP_CTRL | 17)
#define CPIA_COMMAND_GetExposure (INPUT | CPIA_MODULE_VP_CTRL | 18)
#define CPIA_COMMAND_SetSensorMatrix (OUTPUT | CPIA_MODULE_VP_CTRL | 19)
#define CPIA_COMMAND_ColourBars (OUTPUT | CPIA_MODULE_VP_CTRL | 25)
#define CPIA_COMMAND_ReadVPRegs (INPUT | CPIA_MODULE_VP_CTRL | 30)
#define CPIA_COMMAND_WriteVPReg (OUTPUT | CPIA_MODULE_VP_CTRL | 31)
#define CPIA_COMMAND_GrabFrame (OUTPUT | CPIA_MODULE_CAPTURE | 1)
#define CPIA_COMMAND_UploadFrame (OUTPUT | CPIA_MODULE_CAPTURE | 2)
#define CPIA_COMMAND_SetGrabMode (OUTPUT | CPIA_MODULE_CAPTURE | 3)
#define CPIA_COMMAND_InitStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 4)
#define CPIA_COMMAND_FiniStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 5)
#define CPIA_COMMAND_StartStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 6)
#define CPIA_COMMAND_EndStreamCap (OUTPUT | CPIA_MODULE_CAPTURE | 7)
#define CPIA_COMMAND_SetFormat (OUTPUT | CPIA_MODULE_CAPTURE | 8)
#define CPIA_COMMAND_SetROI (OUTPUT | CPIA_MODULE_CAPTURE | 9)
#define CPIA_COMMAND_SetCompression (OUTPUT | CPIA_MODULE_CAPTURE | 10)
#define CPIA_COMMAND_SetCompressionTarget (OUTPUT | CPIA_MODULE_CAPTURE | 11)
#define CPIA_COMMAND_SetYUVThresh (OUTPUT | CPIA_MODULE_CAPTURE | 12)
#define CPIA_COMMAND_SetCompressionParams (OUTPUT | CPIA_MODULE_CAPTURE | 13)
#define CPIA_COMMAND_DiscardFrame (OUTPUT | CPIA_MODULE_CAPTURE | 14)
#define CPIA_COMMAND_OutputRS232 (OUTPUT | CPIA_MODULE_DEBUG | 1)
#define CPIA_COMMAND_AbortProcess (OUTPUT | CPIA_MODULE_DEBUG | 4)
#define CPIA_COMMAND_SetDramPage (OUTPUT | CPIA_MODULE_DEBUG | 5)
#define CPIA_COMMAND_StartDramUpload (OUTPUT | CPIA_MODULE_DEBUG | 6)
#define CPIA_COMMAND_StartDummyDtream (OUTPUT | CPIA_MODULE_DEBUG | 8)
#define CPIA_COMMAND_AbortStream (OUTPUT | CPIA_MODULE_DEBUG | 9)
#define CPIA_COMMAND_DownloadDRAM (OUTPUT | CPIA_MODULE_DEBUG | 10)
enum {
FRAME_READY, /* Ready to grab into */
FRAME_GRABBING, /* In the process of being grabbed into */
FRAME_DONE, /* Finished grabbing, but not been synced yet */
FRAME_UNUSED, /* Unused (no MCAPTURE) */
};
#define COMMAND_NONE 0x0000
#define COMMAND_SETCOMPRESSION 0x0001
#define COMMAND_SETCOMPRESSIONTARGET 0x0002
#define COMMAND_SETCOLOURPARAMS 0x0004
#define COMMAND_SETFORMAT 0x0008
#define COMMAND_PAUSE 0x0010
#define COMMAND_RESUME 0x0020
#define COMMAND_SETYUVTHRESH 0x0040
#define COMMAND_SETECPTIMING 0x0080
#define COMMAND_SETCOMPRESSIONPARAMS 0x0100
#define COMMAND_SETEXPOSURE 0x0200
#define COMMAND_SETCOLOURBALANCE 0x0400
#define COMMAND_SETSENSORFPS 0x0800
#define COMMAND_SETAPCOR 0x1000
#define COMMAND_SETFLICKERCTRL 0x2000
#define COMMAND_SETVLOFFSET 0x4000
#define COMMAND_SETLIGHTS 0x8000
/* Developer's Guide Table 5 p 3-34
* indexed by [mains][sensorFps.baserate][sensorFps.divisor]*/
static u8 flicker_jumps[2][2][4] =
{ { { 76, 38, 19, 9 }, { 92, 46, 23, 11 } },
{ { 64, 32, 16, 8 }, { 76, 38, 19, 9} }
};
/* forward declaration of local function */
static void reset_camera_struct(struct cam_data *cam);
/**********************************************************************
*
* Memory management
*
**********************************************************************/
/* Here we want the physical address of the memory.
* This is used when initializing the contents of the area.
*/
static inline unsigned long kvirt_to_pa(unsigned long adr)
{
unsigned long kva, ret;
kva = (unsigned long) page_address(vmalloc_to_page((void *)adr));
kva |= adr & (PAGE_SIZE-1); /* restore the offset */
ret = __pa(kva);
return ret;
}
static void *rvmalloc(unsigned long size)
{
void *mem;
unsigned long adr;
size = PAGE_ALIGN(size);
mem = vmalloc_32(size);
if (!mem)
return NULL;
memset(mem, 0, size); /* Clear the ram out, no junk to the user */
adr = (unsigned long) mem;
while (size > 0) {
mem_map_reserve(vmalloc_to_page((void *)adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
return mem;
}
static void rvfree(void *mem, unsigned long size)
{
unsigned long adr;
if (!mem)
return;
adr = (unsigned long) mem;
while ((long) size > 0) {
mem_map_unreserve(vmalloc_to_page((void *)adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
vfree(mem);
}
/**********************************************************************
*
* /proc interface
*
**********************************************************************/
#ifdef CONFIG_PROC_FS
static struct proc_dir_entry *cpia_proc_root=NULL;
static int cpia_read_proc(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
char *out = page;
int len, tmp;
struct cam_data *cam = data;
char tmpstr[29];
/* IMPORTANT: This output MUST be kept under PAGE_SIZE
* or we need to get more sophisticated. */
out += sprintf(out, "read-only\n-----------------------\n");
out += sprintf(out, "V4L Driver version: %d.%d.%d\n",
CPIA_MAJ_VER, CPIA_MIN_VER, CPIA_PATCH_VER);
out += sprintf(out, "CPIA Version: %d.%02d (%d.%d)\n",
cam->params.version.firmwareVersion,
cam->params.version.firmwareRevision,
cam->params.version.vcVersion,
cam->params.version.vcRevision);
out += sprintf(out, "CPIA PnP-ID: %04x:%04x:%04x\n",
cam->params.pnpID.vendor, cam->params.pnpID.product,
cam->params.pnpID.deviceRevision);
out += sprintf(out, "VP-Version: %d.%d %04x\n",
cam->params.vpVersion.vpVersion,
cam->params.vpVersion.vpRevision,
cam->params.vpVersion.cameraHeadID);
out += sprintf(out, "system_state: %#04x\n",
cam->params.status.systemState);
out += sprintf(out, "grab_state: %#04x\n",
cam->params.status.grabState);
out += sprintf(out, "stream_state: %#04x\n",
cam->params.status.streamState);
out += sprintf(out, "fatal_error: %#04x\n",
cam->params.status.fatalError);
out += sprintf(out, "cmd_error: %#04x\n",
cam->params.status.cmdError);
out += sprintf(out, "debug_flags: %#04x\n",
cam->params.status.debugFlags);
out += sprintf(out, "vp_status: %#04x\n",
cam->params.status.vpStatus);
out += sprintf(out, "error_code: %#04x\n",
cam->params.status.errorCode);
/* QX3 specific entries */
if (cam->params.qx3.qx3_detected) {
out += sprintf(out, "button: %4d\n",
cam->params.qx3.button);
out += sprintf(out, "cradled: %4d\n",
cam->params.qx3.cradled);
}
out += sprintf(out, "video_size: %s\n",
cam->params.format.videoSize == VIDEOSIZE_CIF ?
"CIF " : "QCIF");
out += sprintf(out, "sub_sample: %s\n",
cam->params.format.subSample == SUBSAMPLE_420 ?
"420" : "422");
out += sprintf(out, "yuv_order: %s\n",
cam->params.format.yuvOrder == YUVORDER_YUYV ?
"YUYV" : "UYVY");
out += sprintf(out, "roi: (%3d, %3d) to (%3d, %3d)\n",
cam->params.roi.colStart*8,
cam->params.roi.rowStart*4,
cam->params.roi.colEnd*8,
cam->params.roi.rowEnd*4);
out += sprintf(out, "actual_fps: %3d\n", cam->fps);
out += sprintf(out, "transfer_rate: %4dkB/s\n",
cam->transfer_rate);
out += sprintf(out, "\nread-write\n");
out += sprintf(out, "----------------------- current min"
" max default comment\n");
out += sprintf(out, "brightness: %8d %8d %8d %8d\n",
cam->params.colourParams.brightness, 0, 100, 50);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
/* 1-02 firmware limits contrast to 80 */
tmp = 80;
else
tmp = 96;
out += sprintf(out, "contrast: %8d %8d %8d %8d"
" steps of 8\n",
cam->params.colourParams.contrast, 0, tmp, 48);
out += sprintf(out, "saturation: %8d %8d %8d %8d\n",
cam->params.colourParams.saturation, 0, 100, 50);
tmp = (25000+5000*cam->params.sensorFps.baserate)/
(1<<cam->params.sensorFps.divisor);
out += sprintf(out, "sensor_fps: %4d.%03d %8d %8d %8d\n",
tmp/1000, tmp%1000, 3, 30, 15);
out += sprintf(out, "stream_start_line: %8d %8d %8d %8d\n",
2*cam->params.streamStartLine, 0,
cam->params.format.videoSize == VIDEOSIZE_CIF ? 288:144,
cam->params.format.videoSize == VIDEOSIZE_CIF ? 240:120);
out += sprintf(out, "ecp_timing: %8s %8s %8s %8s\n",
cam->params.ecpTiming ? "slow" : "normal", "slow",
"normal", "normal");
if (cam->params.colourBalance.balanceModeIsAuto) {
sprintf(tmpstr, "auto");
} else {
sprintf(tmpstr, "manual");
}
out += sprintf(out, "color_balance_mode: %8s %8s %8s"
" %8s\n", tmpstr, "manual", "auto", "auto");
out += sprintf(out, "red_gain: %8d %8d %8d %8d\n",
cam->params.colourBalance.redGain, 0, 212, 32);
out += sprintf(out, "green_gain: %8d %8d %8d %8d\n",
cam->params.colourBalance.greenGain, 0, 212, 6);
out += sprintf(out, "blue_gain: %8d %8d %8d %8d\n",
cam->params.colourBalance.blueGain, 0, 212, 92);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
/* 1-02 firmware limits gain to 2 */
sprintf(tmpstr, "%8d %8d %8d", 1, 2, 2);
else
sprintf(tmpstr, "%8d %8d %8d", 1, 8, 2);
if (cam->params.exposure.gainMode == 0)
out += sprintf(out, "max_gain: unknown %28s"
" powers of 2\n", tmpstr);
else
out += sprintf(out, "max_gain: %8d %28s"
" 1,2,4 or 8 \n",
1<<(cam->params.exposure.gainMode-1), tmpstr);
switch(cam->params.exposure.expMode) {
case 1:
case 3:
sprintf(tmpstr, "manual");
break;
case 2:
sprintf(tmpstr, "auto");
break;
default:
sprintf(tmpstr, "unknown");
break;
}
out += sprintf(out, "exposure_mode: %8s %8s %8s"
" %8s\n", tmpstr, "manual", "auto", "auto");
out += sprintf(out, "centre_weight: %8s %8s %8s %8s\n",
(2-cam->params.exposure.centreWeight) ? "on" : "off",
"off", "on", "on");
out += sprintf(out, "gain: %8d %8d max_gain %8d 1,2,4,8 possible\n",
1<<cam->params.exposure.gain, 1, 1);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
/* 1-02 firmware limits fineExp to 127 */
tmp = 255;
else
tmp = 511;
out += sprintf(out, "fine_exp: %8d %8d %8d %8d\n",
cam->params.exposure.fineExp*2, 0, tmp, 0);
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2)
/* 1-02 firmware limits coarseExpHi to 0 */
tmp = 255;
else
tmp = 65535;
out += sprintf(out, "coarse_exp: %8d %8d %8d"
" %8d\n", cam->params.exposure.coarseExpLo+
256*cam->params.exposure.coarseExpHi, 0, tmp, 185);
out += sprintf(out, "red_comp: %8d %8d %8d %8d\n",
cam->params.exposure.redComp, 220, 255, 220);
out += sprintf(out, "green1_comp: %8d %8d %8d %8d\n",
cam->params.exposure.green1Comp, 214, 255, 214);
out += sprintf(out, "green2_comp: %8d %8d %8d %8d\n",
cam->params.exposure.green2Comp, 214, 255, 214);
out += sprintf(out, "blue_comp: %8d %8d %8d %8d\n",
cam->params.exposure.blueComp, 230, 255, 230);
out += sprintf(out, "apcor_gain1: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain1, 0, 0xff, 0x1c);
out += sprintf(out, "apcor_gain2: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain2, 0, 0xff, 0x1a);
out += sprintf(out, "apcor_gain4: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain4, 0, 0xff, 0x2d);
out += sprintf(out, "apcor_gain8: %#8x %#8x %#8x %#8x\n",
cam->params.apcor.gain8, 0, 0xff, 0x2a);
out += sprintf(out, "vl_offset_gain1: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain1, 0, 255, 24);
out += sprintf(out, "vl_offset_gain2: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain2, 0, 255, 28);
out += sprintf(out, "vl_offset_gain4: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain4, 0, 255, 30);
out += sprintf(out, "vl_offset_gain8: %8d %8d %8d %8d\n",
cam->params.vlOffset.gain8, 0, 255, 30);
out += sprintf(out, "flicker_control: %8s %8s %8s %8s\n",
cam->params.flickerControl.flickerMode ? "on" : "off",
"off", "on", "off");
out += sprintf(out, "mains_frequency: %8d %8d %8d %8d"
" only 50/60\n",
cam->mainsFreq ? 60 : 50, 50, 60, 50);
out += sprintf(out, "allowable_overexposure: %8d %8d %8d %8d\n",
cam->params.flickerControl.allowableOverExposure, 0,
255, 0);
out += sprintf(out, "compression_mode: ");
switch(cam->params.compression.mode) {
case CPIA_COMPRESSION_NONE:
out += sprintf(out, "%8s", "none");
break;
case CPIA_COMPRESSION_AUTO:
out += sprintf(out, "%8s", "auto");
break;
case CPIA_COMPRESSION_MANUAL:
out += sprintf(out, "%8s", "manual");
break;
default:
out += sprintf(out, "%8s", "unknown");
break;
}
out += sprintf(out, " none,auto,manual auto\n");
out += sprintf(out, "decimation_enable: %8s %8s %8s %8s\n",
cam->params.compression.decimation ==
DECIMATION_ENAB ? "on":"off", "off", "off",
"off");
out += sprintf(out, "compression_target: %9s %9s %9s %9s\n",
cam->params.compressionTarget.frTargeting ==
CPIA_COMPRESSION_TARGET_FRAMERATE ?
"framerate":"quality",
"framerate", "quality", "quality");
out += sprintf(out, "target_framerate: %8d %8d %8d %8d\n",
cam->params.compressionTarget.targetFR, 0, 30, 7);
out += sprintf(out, "target_quality: %8d %8d %8d %8d\n",
cam->params.compressionTarget.targetQ, 0, 255, 10);
out += sprintf(out, "y_threshold: %8d %8d %8d %8d\n",
cam->params.yuvThreshold.yThreshold, 0, 31, 15);
out += sprintf(out, "uv_threshold: %8d %8d %8d %8d\n",
cam->params.yuvThreshold.uvThreshold, 0, 31, 15);
out += sprintf(out, "hysteresis: %8d %8d %8d %8d\n",
cam->params.compressionParams.hysteresis, 0, 255, 3);
out += sprintf(out, "threshold_max: %8d %8d %8d %8d\n",
cam->params.compressionParams.threshMax, 0, 255, 11);
out += sprintf(out, "small_step: %8d %8d %8d %8d\n",
cam->params.compressionParams.smallStep, 0, 255, 1);
out += sprintf(out, "large_step: %8d %8d %8d %8d\n",
cam->params.compressionParams.largeStep, 0, 255, 3);
out += sprintf(out, "decimation_hysteresis: %8d %8d %8d %8d\n",
cam->params.compressionParams.decimationHysteresis,
0, 255, 2);
out += sprintf(out, "fr_diff_step_thresh: %8d %8d %8d %8d\n",
cam->params.compressionParams.frDiffStepThresh,
0, 255, 5);
out += sprintf(out, "q_diff_step_thresh: %8d %8d %8d %8d\n",
cam->params.compressionParams.qDiffStepThresh,
0, 255, 3);
out += sprintf(out, "decimation_thresh_mod: %8d %8d %8d %8d\n",
cam->params.compressionParams.decimationThreshMod,
0, 255, 2);
/* QX3 specific entries */
if (cam->params.qx3.qx3_detected) {
out += sprintf(out, "toplight: %8s %8s %8s %8s\n",
cam->params.qx3.toplight ? "on" : "off",
"off", "on", "off");
out += sprintf(out, "bottomlight: %8s %8s %8s %8s\n",
cam->params.qx3.bottomlight ? "on" : "off",
"off", "on", "off");
}
len = out - page;
len -= off;
if (len < count) {
*eof = 1;
if (len <= 0) return 0;
} else
len = count;
*start = page + off;
return len;
}
static int match(char *checkstr, char **buffer, unsigned long *count,
int *find_colon, int *err)
{
int ret, colon_found = 1;
int len = strlen(checkstr);
ret = (len <= *count && strncmp(*buffer, checkstr, len) == 0);
if (ret) {
*buffer += len;
*count -= len;
if (*find_colon) {
colon_found = 0;
while (*count && (**buffer == ' ' || **buffer == '\t' ||
(!colon_found && **buffer == ':'))) {
if (**buffer == ':')
colon_found = 1;
--*count;
++*buffer;
}
if (!*count || !colon_found)
*err = -EINVAL;
*find_colon = 0;
}
}
return ret;
}
static unsigned long int value(char **buffer, unsigned long *count, int *err)
{
char *p;
unsigned long int ret;
ret = simple_strtoul(*buffer, &p, 0);
if (p == *buffer)
*err = -EINVAL;
else {
*count -= p - *buffer;
*buffer = p;
}
return ret;
}
static int cpia_write_proc(struct file *file, const char *buf,
unsigned long count, void *data)
{
struct cam_data *cam = data;
struct cam_params new_params;
char *page, *buffer;
int retval, find_colon;
int size = count;
unsigned long val = 0;
u32 command_flags = 0;
u8 new_mains;
/*
* This code to copy from buf to page is shamelessly copied
* from the comx driver
*/
if (count > PAGE_SIZE) {
printk(KERN_ERR "count is %lu > %d!!!\n", count, (int)PAGE_SIZE);
return -ENOSPC;
}
if (!(page = (char *)__get_free_page(GFP_KERNEL))) return -ENOMEM;
if(copy_from_user(page, buf, count))
{
retval = -EFAULT;
goto out;
}
if (page[count-1] == '\n')
page[count-1] = '\0';
else if (count < PAGE_SIZE)
page[count] = '\0';
else if (page[count]) {
retval = -EINVAL;
goto out;
}
buffer = page;
if (down_interruptible(&cam->param_lock))
return -ERESTARTSYS;
/*
* Skip over leading whitespace
*/
while (count && isspace(*buffer)) {
--count;
++buffer;
}
memcpy(&new_params, &cam->params, sizeof(struct cam_params));
new_mains = cam->mainsFreq;
#define MATCH(x) (match(x, &buffer, &count, &find_colon, &retval))
#define VALUE (value(&buffer,&count, &retval))
#define FIRMWARE_VERSION(x,y) (new_params.version.firmwareVersion == (x) && \
new_params.version.firmwareRevision == (y))
retval = 0;
while (count && !retval) {
find_colon = 1;
if (MATCH("brightness")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 100)
new_params.colourParams.brightness = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOLOURPARAMS;
} else if (MATCH("contrast")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 100) {
/* contrast is in steps of 8, so round*/
val = ((val + 3) / 8) * 8;
/* 1-02 firmware limits contrast to 80*/
if (FIRMWARE_VERSION(1,2) && val > 80)
val = 80;
new_params.colourParams.contrast = val;
} else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOLOURPARAMS;
} else if (MATCH("saturation")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 100)
new_params.colourParams.saturation = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOLOURPARAMS;
} else if (MATCH("sensor_fps")) {
if (!retval)
val = VALUE;
if (!retval) {
/* find values so that sensorFPS is minimized,
* but >= val */
if (val > 30)
retval = -EINVAL;
else if (val > 25) {
new_params.sensorFps.divisor = 0;
new_params.sensorFps.baserate = 1;
} else if (val > 15) {
new_params.sensorFps.divisor = 0;
new_params.sensorFps.baserate = 0;
} else if (val > 12) {
new_params.sensorFps.divisor = 1;
new_params.sensorFps.baserate = 1;
} else if (val > 7) {
new_params.sensorFps.divisor = 1;
new_params.sensorFps.baserate = 0;
} else if (val > 6) {
new_params.sensorFps.divisor = 2;
new_params.sensorFps.baserate = 1;
} else if (val > 3) {
new_params.sensorFps.divisor = 2;
new_params.sensorFps.baserate = 0;
} else {
new_params.sensorFps.divisor = 3;
/* Either base rate would work here */
new_params.sensorFps.baserate = 1;
}
new_params.flickerControl.coarseJump =
flicker_jumps[new_mains]
[new_params.sensorFps.baserate]
[new_params.sensorFps.divisor];
if (new_params.flickerControl.flickerMode)
command_flags |= COMMAND_SETFLICKERCTRL;
}
command_flags |= COMMAND_SETSENSORFPS;
} else if (MATCH("stream_start_line")) {
if (!retval)
val = VALUE;
if (!retval) {
int max_line = 288;
if (new_params.format.videoSize == VIDEOSIZE_QCIF)
max_line = 144;
if (val <= max_line)
new_params.streamStartLine = val/2;
else
retval = -EINVAL;
}
} else if (MATCH("ecp_timing")) {
if (!retval && MATCH("normal"))
new_params.ecpTiming = 0;
else if (!retval && MATCH("slow"))
new_params.ecpTiming = 1;
else
retval = -EINVAL;
command_flags |= COMMAND_SETECPTIMING;
} else if (MATCH("color_balance_mode")) {
if (!retval && MATCH("manual"))
new_params.colourBalance.balanceModeIsAuto = 0;
else if (!retval && MATCH("auto"))
new_params.colourBalance.balanceModeIsAuto = 1;
else
retval = -EINVAL;
command_flags |= COMMAND_SETCOLOURBALANCE;
} else if (MATCH("red_gain")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 212)
new_params.colourBalance.redGain = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOLOURBALANCE;
} else if (MATCH("green_gain")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 212)
new_params.colourBalance.greenGain = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOLOURBALANCE;
} else if (MATCH("blue_gain")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 212)
new_params.colourBalance.blueGain = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOLOURBALANCE;
} else if (MATCH("max_gain")) {
if (!retval)
val = VALUE;
if (!retval) {
/* 1-02 firmware limits gain to 2 */
if (FIRMWARE_VERSION(1,2) && val > 2)
val = 2;
switch(val) {
case 1:
new_params.exposure.gainMode = 1;
break;
case 2:
new_params.exposure.gainMode = 2;
break;
case 4:
new_params.exposure.gainMode = 3;
break;
case 8:
new_params.exposure.gainMode = 4;
break;
default:
retval = -EINVAL;
break;
}
}
command_flags |= COMMAND_SETEXPOSURE;
} else if (MATCH("exposure_mode")) {
if (!retval && MATCH("auto"))
new_params.exposure.expMode = 2;
else if (!retval && MATCH("manual")) {
if (new_params.exposure.expMode == 2)
new_params.exposure.expMode = 3;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
} else
retval = -EINVAL;
command_flags |= COMMAND_SETEXPOSURE;
} else if (MATCH("centre_weight")) {
if (!retval && MATCH("on"))
new_params.exposure.centreWeight = 1;
else if (!retval && MATCH("off"))
new_params.exposure.centreWeight = 2;
else
retval = -EINVAL;
command_flags |= COMMAND_SETEXPOSURE;
} else if (MATCH("gain")) {
if (!retval)
val = VALUE;
if (!retval) {
switch(val) {
case 1:
new_params.exposure.gain = 0;
new_params.exposure.expMode = 1;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
break;
case 2:
new_params.exposure.gain = 1;
new_params.exposure.expMode = 1;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
break;
case 4:
new_params.exposure.gain = 2;
new_params.exposure.expMode = 1;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
break;
case 8:
new_params.exposure.gain = 3;
new_params.exposure.expMode = 1;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
break;
default:
retval = -EINVAL;
break;
}
command_flags |= COMMAND_SETEXPOSURE;
if (new_params.exposure.gain >
new_params.exposure.gainMode-1)
retval = -EINVAL;
}
} else if (MATCH("fine_exp")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val < 256) {
/* 1-02 firmware limits fineExp to 127*/
if (FIRMWARE_VERSION(1,2) && val > 127)
val = 127;
new_params.exposure.fineExp = val;
new_params.exposure.expMode = 1;
command_flags |= COMMAND_SETEXPOSURE;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
} else
retval = -EINVAL;
}
} else if (MATCH("coarse_exp")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val < 65536) {
/* 1-02 firmware limits
* coarseExp to 255 */
if (FIRMWARE_VERSION(1,2) && val > 255)
val = 255;
new_params.exposure.coarseExpLo =
val & 0xff;
new_params.exposure.coarseExpHi =
val >> 8;
new_params.exposure.expMode = 1;
command_flags |= COMMAND_SETEXPOSURE;
new_params.flickerControl.flickerMode = 0;
command_flags |= COMMAND_SETFLICKERCTRL;
} else
retval = -EINVAL;
}
} else if (MATCH("red_comp")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val >= 220 && val <= 255) {
new_params.exposure.redComp = val;
command_flags |= COMMAND_SETEXPOSURE;
} else
retval = -EINVAL;
}
} else if (MATCH("green1_comp")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val >= 214 && val <= 255) {
new_params.exposure.green1Comp = val;
command_flags |= COMMAND_SETEXPOSURE;
} else
retval = -EINVAL;
}
} else if (MATCH("green2_comp")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val >= 214 && val <= 255) {
new_params.exposure.green2Comp = val;
command_flags |= COMMAND_SETEXPOSURE;
} else
retval = -EINVAL;
}
} else if (MATCH("blue_comp")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val >= 230 && val <= 255) {
new_params.exposure.blueComp = val;
command_flags |= COMMAND_SETEXPOSURE;
} else
retval = -EINVAL;
}
} else if (MATCH("apcor_gain1")) {
if (!retval)
val = VALUE;
if (!retval) {
command_flags |= COMMAND_SETAPCOR;
if (val <= 0xff)
new_params.apcor.gain1 = val;
else
retval = -EINVAL;
}
} else if (MATCH("apcor_gain2")) {
if (!retval)
val = VALUE;
if (!retval) {
command_flags |= COMMAND_SETAPCOR;
if (val <= 0xff)
new_params.apcor.gain2 = val;
else
retval = -EINVAL;
}
} else if (MATCH("apcor_gain4")) {
if (!retval)
val = VALUE;
if (!retval) {
command_flags |= COMMAND_SETAPCOR;
if (val <= 0xff)
new_params.apcor.gain4 = val;
else
retval = -EINVAL;
}
} else if (MATCH("apcor_gain8")) {
if (!retval)
val = VALUE;
if (!retval) {
command_flags |= COMMAND_SETAPCOR;
if (val <= 0xff)
new_params.apcor.gain8 = val;
else
retval = -EINVAL;
}
} else if (MATCH("vl_offset_gain1")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.vlOffset.gain1 = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETVLOFFSET;
} else if (MATCH("vl_offset_gain2")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.vlOffset.gain2 = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETVLOFFSET;
} else if (MATCH("vl_offset_gain4")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.vlOffset.gain4 = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETVLOFFSET;
} else if (MATCH("vl_offset_gain8")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.vlOffset.gain8 = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETVLOFFSET;
} else if (MATCH("flicker_control")) {
if (!retval && MATCH("on")) {
new_params.flickerControl.flickerMode = 1;
new_params.exposure.expMode = 2;
command_flags |= COMMAND_SETEXPOSURE;
} else if (!retval && MATCH("off"))
new_params.flickerControl.flickerMode = 0;
else
retval = -EINVAL;
command_flags |= COMMAND_SETFLICKERCTRL;
} else if (MATCH("mains_frequency")) {
if (!retval && MATCH("50")) {
new_mains = 0;
new_params.flickerControl.coarseJump =
flicker_jumps[new_mains]
[new_params.sensorFps.baserate]
[new_params.sensorFps.divisor];
if (new_params.flickerControl.flickerMode)
command_flags |= COMMAND_SETFLICKERCTRL;
} else if (!retval && MATCH("60")) {
new_mains = 1;
new_params.flickerControl.coarseJump =
flicker_jumps[new_mains]
[new_params.sensorFps.baserate]
[new_params.sensorFps.divisor];
if (new_params.flickerControl.flickerMode)
command_flags |= COMMAND_SETFLICKERCTRL;
} else
retval = -EINVAL;
} else if (MATCH("allowable_overexposure")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff) {
new_params.flickerControl.
allowableOverExposure = val;
command_flags |= COMMAND_SETFLICKERCTRL;
} else
retval = -EINVAL;
}
} else if (MATCH("compression_mode")) {
if (!retval && MATCH("none"))
new_params.compression.mode =
CPIA_COMPRESSION_NONE;
else if (!retval && MATCH("auto"))
new_params.compression.mode =
CPIA_COMPRESSION_AUTO;
else if (!retval && MATCH("manual"))
new_params.compression.mode =
CPIA_COMPRESSION_MANUAL;
else
retval = -EINVAL;
command_flags |= COMMAND_SETCOMPRESSION;
} else if (MATCH("decimation_enable")) {
if (!retval && MATCH("off"))
new_params.compression.decimation = 0;
else
retval = -EINVAL;
command_flags |= COMMAND_SETCOMPRESSION;
} else if (MATCH("compression_target")) {
if (!retval && MATCH("quality"))
new_params.compressionTarget.frTargeting =
CPIA_COMPRESSION_TARGET_QUALITY;
else if (!retval && MATCH("framerate"))
new_params.compressionTarget.frTargeting =
CPIA_COMPRESSION_TARGET_FRAMERATE;
else
retval = -EINVAL;
command_flags |= COMMAND_SETCOMPRESSIONTARGET;
} else if (MATCH("target_framerate")) {
if (!retval)
val = VALUE;
if (!retval)
new_params.compressionTarget.targetFR = val;
command_flags |= COMMAND_SETCOMPRESSIONTARGET;
} else if (MATCH("target_quality")) {
if (!retval)
val = VALUE;
if (!retval)
new_params.compressionTarget.targetQ = val;
command_flags |= COMMAND_SETCOMPRESSIONTARGET;
} else if (MATCH("y_threshold")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val < 32)
new_params.yuvThreshold.yThreshold = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETYUVTHRESH;
} else if (MATCH("uv_threshold")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val < 32)
new_params.yuvThreshold.uvThreshold = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETYUVTHRESH;
} else if (MATCH("hysteresis")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.hysteresis = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("threshold_max")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.threshMax = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("small_step")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.smallStep = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("large_step")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.largeStep = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("decimation_hysteresis")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.decimationHysteresis = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("fr_diff_step_thresh")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.frDiffStepThresh = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("q_diff_step_thresh")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.qDiffStepThresh = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("decimation_thresh_mod")) {
if (!retval)
val = VALUE;
if (!retval) {
if (val <= 0xff)
new_params.compressionParams.decimationThreshMod = val;
else
retval = -EINVAL;
}
command_flags |= COMMAND_SETCOMPRESSIONPARAMS;
} else if (MATCH("toplight")) {
if (!retval && MATCH("on"))
new_params.qx3.toplight = 1;
else if (!retval && MATCH("off"))
new_params.qx3.toplight = 0;
else
retval = -EINVAL;
command_flags |= COMMAND_SETLIGHTS;
} else if (MATCH("bottomlight")) {
if (!retval && MATCH("on"))
new_params.qx3.bottomlight = 1;
else if (!retval && MATCH("off"))
new_params.qx3.bottomlight = 0;
else
retval = -EINVAL;
command_flags |= COMMAND_SETLIGHTS;
} else {
DBG("No match found\n");
retval = -EINVAL;
}
if (!retval) {
while (count && isspace(*buffer) && *buffer != '\n') {
--count;
++buffer;
}
if (count) {
if (*buffer == '\0' && count != 1)
retval = -EINVAL;
else if (*buffer != '\n' && *buffer != ';' &&
*buffer != '\0')
retval = -EINVAL;
else {
--count;
++buffer;
}
}
}
}
#undef MATCH
#undef VALUE
#undef FIRMWARE_VERSION
if (!retval) {
if (command_flags & COMMAND_SETCOLOURPARAMS) {
/* Adjust cam->vp to reflect these changes */
cam->vp.brightness =
new_params.colourParams.brightness*65535/100;
cam->vp.contrast =
new_params.colourParams.contrast*65535/100;
cam->vp.colour =
new_params.colourParams.saturation*65535/100;
}
memcpy(&cam->params, &new_params, sizeof(struct cam_params));
cam->mainsFreq = new_mains;
cam->cmd_queue |= command_flags;
retval = size;
} else
DBG("error: %d\n", retval);
up(&cam->param_lock);
out:
free_page((unsigned long)page);
return retval;
}
static void create_proc_cpia_cam(struct cam_data *cam)
{
char name[7];
struct proc_dir_entry *ent;
if (!cpia_proc_root || !cam)
return;
sprintf(name, "video%d", cam->vdev.minor);
ent = create_proc_entry(name, S_IFREG|S_IRUGO|S_IWUSR, cpia_proc_root);
if (!ent)
return;
ent->data = cam;
ent->read_proc = cpia_read_proc;
ent->write_proc = cpia_write_proc;
/*
size of the proc entry is 3672 bytes for the standard webcam;
the extra features of the QX3 microscope add 188 bytes.
(we have not yet probed the camera to see which type it is).
*/
ent->size = 3672 + 188;
cam->proc_entry = ent;
}
static void destroy_proc_cpia_cam(struct cam_data *cam)
{
char name[7];
if (!cam || !cam->proc_entry)
return;
sprintf(name, "video%d", cam->vdev.minor);
remove_proc_entry(name, cpia_proc_root);
cam->proc_entry = NULL;
}
static void proc_cpia_create(void)
{
cpia_proc_root = create_proc_entry("cpia", S_IFDIR, 0);
if (cpia_proc_root)
cpia_proc_root->owner = THIS_MODULE;
else
LOG("Unable to initialise /proc/cpia\n");
}
static void proc_cpia_destroy(void)
{
remove_proc_entry("cpia", 0);
}
#endif /* CONFIG_PROC_FS */
/* ----------------------- debug functions ---------------------- */
#define printstatus(cam) \
DBG("%02x %02x %02x %02x %02x %02x %02x %02x\n",\
cam->params.status.systemState, cam->params.status.grabState, \
cam->params.status.streamState, cam->params.status.fatalError, \
cam->params.status.cmdError, cam->params.status.debugFlags, \
cam->params.status.vpStatus, cam->params.status.errorCode);
/* ----------------------- v4l helpers -------------------------- */
/* supported frame palettes and depths */
static inline int valid_mode(u16 palette, u16 depth)
{
return (palette == VIDEO_PALETTE_GREY && depth == 8) ||
(palette == VIDEO_PALETTE_RGB555 && depth == 16) ||
(palette == VIDEO_PALETTE_RGB565 && depth == 16) ||
(palette == VIDEO_PALETTE_RGB24 && depth == 24) ||
(palette == VIDEO_PALETTE_RGB32 && depth == 32) ||
(palette == VIDEO_PALETTE_YUV422 && depth == 16) ||
(palette == VIDEO_PALETTE_YUYV && depth == 16) ||
(palette == VIDEO_PALETTE_UYVY && depth == 16);
}
static int match_videosize( int width, int height )
{
/* return the best match, where 'best' is as always
* the largest that is not bigger than what is requested. */
if (width>=352 && height>=288)
return VIDEOSIZE_352_288; /* CIF */
if (width>=320 && height>=240)
return VIDEOSIZE_320_240; /* SIF */
if (width>=288 && height>=216)
return VIDEOSIZE_288_216;
if (width>=256 && height>=192)
return VIDEOSIZE_256_192;
if (width>=224 && height>=168)
return VIDEOSIZE_224_168;
if (width>=192 && height>=144)
return VIDEOSIZE_192_144;
if (width>=176 && height>=144)
return VIDEOSIZE_176_144; /* QCIF */
if (width>=160 && height>=120)
return VIDEOSIZE_160_120; /* QSIF */
if (width>=128 && height>=96)
return VIDEOSIZE_128_96;
if (width>=88 && height>=72)
return VIDEOSIZE_88_72;
if (width>=64 && height>=48)
return VIDEOSIZE_64_48;
if (width>=48 && height>=48)
return VIDEOSIZE_48_48;
return -1;
}
/* these are the capture sizes we support */
static void set_vw_size(struct cam_data *cam)
{
/* the col/row/start/end values are the result of simple math */
/* study the SetROI-command in cpia developers guide p 2-22 */
/* streamStartLine is set to the recommended value in the cpia */
/* developers guide p 3-37 */
switch(cam->video_size) {
case VIDEOSIZE_CIF:
cam->vw.width = 352;
cam->vw.height = 288;
cam->params.format.videoSize=VIDEOSIZE_CIF;
cam->params.roi.colStart=0;
cam->params.roi.colEnd=44;
cam->params.roi.rowStart=0;
cam->params.roi.rowEnd=72;
cam->params.streamStartLine = 120;
break;
case VIDEOSIZE_SIF:
cam->vw.width = 320;
cam->vw.height = 240;
cam->params.format.videoSize=VIDEOSIZE_CIF;
cam->params.roi.colStart=2;
cam->params.roi.colEnd=42;
cam->params.roi.rowStart=6;
cam->params.roi.rowEnd=66;
cam->params.streamStartLine = 120;
break;
case VIDEOSIZE_288_216:
cam->vw.width = 288;
cam->vw.height = 216;
cam->params.format.videoSize=VIDEOSIZE_CIF;
cam->params.roi.colStart=4;
cam->params.roi.colEnd=40;
cam->params.roi.rowStart=9;
cam->params.roi.rowEnd=63;
cam->params.streamStartLine = 120;
break;
case VIDEOSIZE_256_192:
cam->vw.width = 256;
cam->vw.height = 192;
cam->params.format.videoSize=VIDEOSIZE_CIF;
cam->params.roi.colStart=6;
cam->params.roi.colEnd=38;
cam->params.roi.rowStart=12;
cam->params.roi.rowEnd=60;
cam->params.streamStartLine = 120;
break;
case VIDEOSIZE_224_168:
cam->vw.width = 224;
cam->vw.height = 168;
cam->params.format.videoSize=VIDEOSIZE_CIF;
cam->params.roi.colStart=8;
cam->params.roi.colEnd=36;
cam->params.roi.rowStart=15;
cam->params.roi.rowEnd=57;
cam->params.streamStartLine = 120;
break;
case VIDEOSIZE_192_144:
cam->vw.width = 192;
cam->vw.height = 144;
cam->params.format.videoSize=VIDEOSIZE_CIF;
cam->params.roi.colStart=10;
cam->params.roi.colEnd=34;
cam->params.roi.rowStart=18;
cam->params.roi.rowEnd=54;
cam->params.streamStartLine = 120;
break;
case VIDEOSIZE_QCIF:
cam->vw.width = 176;
cam->vw.height = 144;
cam->params.format.videoSize=VIDEOSIZE_QCIF;
cam->params.roi.colStart=0;
cam->params.roi.colEnd=22;
cam->params.roi.rowStart=0;
cam->params.roi.rowEnd=36;
cam->params.streamStartLine = 60;
break;
case VIDEOSIZE_QSIF:
cam->vw.width = 160;
cam->vw.height = 120;
cam->params.format.videoSize=VIDEOSIZE_QCIF;
cam->params.roi.colStart=1;
cam->params.roi.colEnd=21;
cam->params.roi.rowStart=3;
cam->params.roi.rowEnd=33;
cam->params.streamStartLine = 60;
break;
case VIDEOSIZE_128_96:
cam->vw.width = 128;
cam->vw.height = 96;
cam->params.format.videoSize=VIDEOSIZE_QCIF;
cam->params.roi.colStart=3;
cam->params.roi.colEnd=19;
cam->params.roi.rowStart=6;
cam->params.roi.rowEnd=30;
cam->params.streamStartLine = 60;
break;
case VIDEOSIZE_88_72:
cam->vw.width = 88;
cam->vw.height = 72;
cam->params.format.videoSize=VIDEOSIZE_QCIF;
cam->params.roi.colStart=5;
cam->params.roi.colEnd=16;
cam->params.roi.rowStart=9;
cam->params.roi.rowEnd=27;
cam->params.streamStartLine = 60;
break;
case VIDEOSIZE_64_48:
cam->vw.width = 64;
cam->vw.height = 48;
cam->params.format.videoSize=VIDEOSIZE_QCIF;
cam->params.roi.colStart=7;
cam->params.roi.colEnd=15;
cam->params.roi.rowStart=12;
cam->params.roi.rowEnd=24;
cam->params.streamStartLine = 60;
break;
case VIDEOSIZE_48_48:
cam->vw.width = 48;
cam->vw.height = 48;
cam->params.format.videoSize=VIDEOSIZE_QCIF;
cam->params.roi.colStart=8;
cam->params.roi.colEnd=14;
cam->params.roi.rowStart=6;
cam->params.roi.rowEnd=30;
cam->params.streamStartLine = 60;
break;
default:
LOG("bad videosize value: %d\n", cam->video_size);
}
return;
}
static int allocate_frame_buf(struct cam_data *cam)
{
int i;
cam->frame_buf = rvmalloc(FRAME_NUM * CPIA_MAX_FRAME_SIZE);
if (!cam->frame_buf)
return -ENOBUFS;
for (i = 0; i < FRAME_NUM; i++)
cam->frame[i].data = cam->frame_buf + i * CPIA_MAX_FRAME_SIZE;
return 0;
}
static int free_frame_buf(struct cam_data *cam)
{
int i;
rvfree(cam->frame_buf, FRAME_NUM*CPIA_MAX_FRAME_SIZE);
cam->frame_buf = 0;
for (i=0; i < FRAME_NUM; i++)
cam->frame[i].data = NULL;
return 0;
}
static inline void free_frames(struct cpia_frame frame[FRAME_NUM])
{
int i;
for (i=0; i < FRAME_NUM; i++)
frame[i].state = FRAME_UNUSED;
return;
}
/**********************************************************************
*
* General functions
*
**********************************************************************/
/* send an arbitrary command to the camera */
static int do_command(struct cam_data *cam, u16 command, u8 a, u8 b, u8 c, u8 d)
{
int retval, datasize;
u8 cmd[8], data[8];
switch(command) {
case CPIA_COMMAND_GetCPIAVersion:
case CPIA_COMMAND_GetPnPID:
case CPIA_COMMAND_GetCameraStatus:
case CPIA_COMMAND_GetVPVersion:
datasize=8;
break;
case CPIA_COMMAND_GetColourParams:
case CPIA_COMMAND_GetColourBalance:
case CPIA_COMMAND_GetExposure:
down(&cam->param_lock);
datasize=8;
break;
case CPIA_COMMAND_ReadMCPorts:
case CPIA_COMMAND_ReadVCRegs:
datasize = 4;
break;
default:
datasize=0;
break;
}
cmd[0] = command>>8;
cmd[1] = command&0xff;
cmd[2] = a;
cmd[3] = b;
cmd[4] = c;
cmd[5] = d;
cmd[6] = datasize;
cmd[7] = 0;
retval = cam->ops->transferCmd(cam->lowlevel_data, cmd, data);
if (retval) {
DBG("%x - failed, retval=%d\n", command, retval);
if (command == CPIA_COMMAND_GetColourParams ||
command == CPIA_COMMAND_GetColourBalance ||
command == CPIA_COMMAND_GetExposure)
up(&cam->param_lock);
} else {
switch(command) {
case CPIA_COMMAND_GetCPIAVersion:
cam->params.version.firmwareVersion = data[0];
cam->params.version.firmwareRevision = data[1];
cam->params.version.vcVersion = data[2];
cam->params.version.vcRevision = data[3];
break;
case CPIA_COMMAND_GetPnPID:
cam->params.pnpID.vendor = data[0]+(((u16)data[1])<<8);
cam->params.pnpID.product = data[2]+(((u16)data[3])<<8);
cam->params.pnpID.deviceRevision =
data[4]+(((u16)data[5])<<8);
break;
case CPIA_COMMAND_GetCameraStatus:
cam->params.status.systemState = data[0];
cam->params.status.grabState = data[1];
cam->params.status.streamState = data[2];
cam->params.status.fatalError = data[3];
cam->params.status.cmdError = data[4];
cam->params.status.debugFlags = data[5];
cam->params.status.vpStatus = data[6];
cam->params.status.errorCode = data[7];
break;
case CPIA_COMMAND_GetVPVersion:
cam->params.vpVersion.vpVersion = data[0];
cam->params.vpVersion.vpRevision = data[1];
cam->params.vpVersion.cameraHeadID =
data[2]+(((u16)data[3])<<8);
break;
case CPIA_COMMAND_GetColourParams:
cam->params.colourParams.brightness = data[0];
cam->params.colourParams.contrast = data[1];
cam->params.colourParams.saturation = data[2];
up(&cam->param_lock);
break;
case CPIA_COMMAND_GetColourBalance:
cam->params.colourBalance.redGain = data[0];
cam->params.colourBalance.greenGain = data[1];
cam->params.colourBalance.blueGain = data[2];
up(&cam->param_lock);
break;
case CPIA_COMMAND_GetExposure:
cam->params.exposure.gain = data[0];
cam->params.exposure.fineExp = data[1];
cam->params.exposure.coarseExpLo = data[2];
cam->params.exposure.coarseExpHi = data[3];
cam->params.exposure.redComp = data[4];
cam->params.exposure.green1Comp = data[5];
cam->params.exposure.green2Comp = data[6];
cam->params.exposure.blueComp = data[7];
/* If the *Comp parameters are wacko, generate
* a warning, and reset them back to default
* values. - rich@annexia.org
*/
if (cam->params.exposure.redComp < 220 ||
cam->params.exposure.green1Comp < 214 ||
cam->params.exposure.green2Comp < 214 ||
cam->params.exposure.blueComp < 230)
{
printk (KERN_WARNING "*_comp parameters have gone AWOL (%d/%d/%d/%d) - reseting them\n",
cam->params.exposure.redComp,
cam->params.exposure.green1Comp,
cam->params.exposure.green2Comp,
cam->params.exposure.blueComp);
cam->params.exposure.redComp = 220;
cam->params.exposure.green1Comp = 214;
cam->params.exposure.green2Comp = 214;
cam->params.exposure.blueComp = 230;
}
up(&cam->param_lock);
break;
case CPIA_COMMAND_ReadMCPorts:
if (!cam->params.qx3.qx3_detected)
break;
/* test button press */
cam->params.qx3.button = ((data[1] & 0x02) == 0);
if (cam->params.qx3.button) {
/* button pressed - unlock the latch */
do_command(cam,CPIA_COMMAND_WriteMCPort,3,0xDF,0xDF,0);
do_command(cam,CPIA_COMMAND_WriteMCPort,3,0xFF,0xFF,0);
}
/* test whether microscope is cradled */
cam->params.qx3.cradled = ((data[2] & 0x40) == 0);
break;
default:
break;
}
}
return retval;
}
/* send a command to the camera with an additional data transaction */
static int do_command_extended(struct cam_data *cam, u16 command,
u8 a, u8 b, u8 c, u8 d,
u8 e, u8 f, u8 g, u8 h,
u8 i, u8 j, u8 k, u8 l)
{
int retval;
u8 cmd[8], data[8];
cmd[0] = command>>8;
cmd[1] = command&0xff;
cmd[2] = a;
cmd[3] = b;
cmd[4] = c;
cmd[5] = d;
cmd[6] = 8;
cmd[7] = 0;
data[0] = e;
data[1] = f;
data[2] = g;
data[3] = h;
data[4] = i;
data[5] = j;
data[6] = k;
data[7] = l;
retval = cam->ops->transferCmd(cam->lowlevel_data, cmd, data);
if (retval)
DBG("%x - failed\n", command);
return retval;
}
/**********************************************************************
*
* Colorspace conversion
*
**********************************************************************/
#define LIMIT(x) ((((x)>0xffffff)?0xff0000:(((x)<=0xffff)?0:(x)&0xff0000))>>16)
static int yuvconvert(unsigned char *yuv, unsigned char *rgb, int out_fmt,
int in_uyvy, int mmap_kludge)
{
int y, u, v, r, g, b, y1;
switch(out_fmt) {
case VIDEO_PALETTE_RGB555:
case VIDEO_PALETTE_RGB565:
case VIDEO_PALETTE_RGB24:
case VIDEO_PALETTE_RGB32:
if (in_uyvy) {
u = *yuv++ - 128;
y = (*yuv++ - 16) * 76310;
v = *yuv++ - 128;
y1 = (*yuv - 16) * 76310;
} else {
y = (*yuv++ - 16) * 76310;
u = *yuv++ - 128;
y1 = (*yuv++ - 16) * 76310;
v = *yuv - 128;
}
r = 104635 * v;
g = -25690 * u + -53294 * v;
b = 132278 * u;
break;
default:
y = *yuv++;
u = *yuv++;
y1 = *yuv++;
v = *yuv;
/* Just to avoid compiler warnings */
r = 0;
g = 0;
b = 0;
break;
}
switch(out_fmt) {
case VIDEO_PALETTE_RGB555:
*rgb++ = ((LIMIT(g+y) & 0xf8) << 2) | (LIMIT(b+y) >> 3);
*rgb++ = ((LIMIT(r+y) & 0xf8) >> 1) | (LIMIT(g+y) >> 6);
*rgb++ = ((LIMIT(g+y1) & 0xf8) << 2) | (LIMIT(b+y1) >> 3);
*rgb = ((LIMIT(r+y1) & 0xf8) >> 1) | (LIMIT(g+y1) >> 6);
return 4;
case VIDEO_PALETTE_RGB565:
*rgb++ = ((LIMIT(g+y) & 0xfc) << 3) | (LIMIT(b+y) >> 3);
*rgb++ = (LIMIT(r+y) & 0xf8) | (LIMIT(g+y) >> 5);
*rgb++ = ((LIMIT(g+y1) & 0xfc) << 3) | (LIMIT(b+y1) >> 3);
*rgb = (LIMIT(r+y1) & 0xf8) | (LIMIT(g+y1) >> 5);
return 4;
case VIDEO_PALETTE_RGB24:
if (mmap_kludge) {
*rgb++ = LIMIT(b+y);
*rgb++ = LIMIT(g+y);
*rgb++ = LIMIT(r+y);
*rgb++ = LIMIT(b+y1);
*rgb++ = LIMIT(g+y1);
*rgb = LIMIT(r+y1);
} else {
*rgb++ = LIMIT(r+y);
*rgb++ = LIMIT(g+y);
*rgb++ = LIMIT(b+y);
*rgb++ = LIMIT(r+y1);
*rgb++ = LIMIT(g+y1);
*rgb = LIMIT(b+y1);
}
return 6;
case VIDEO_PALETTE_RGB32:
if (mmap_kludge) {
*rgb++ = LIMIT(b+y);
*rgb++ = LIMIT(g+y);
*rgb++ = LIMIT(r+y);
rgb++;
*rgb++ = LIMIT(b+y1);
*rgb++ = LIMIT(g+y1);
*rgb = LIMIT(r+y1);
} else {
*rgb++ = LIMIT(r+y);
*rgb++ = LIMIT(g+y);
*rgb++ = LIMIT(b+y);
rgb++;
*rgb++ = LIMIT(r+y1);
*rgb++ = LIMIT(g+y1);
*rgb = LIMIT(b+y1);
}
return 8;
case VIDEO_PALETTE_GREY:
*rgb++ = y;
*rgb = y1;
return 2;
case VIDEO_PALETTE_YUV422:
case VIDEO_PALETTE_YUYV:
*rgb++ = y;
*rgb++ = u;
*rgb++ = y1;
*rgb = v;
return 4;
case VIDEO_PALETTE_UYVY:
*rgb++ = u;
*rgb++ = y;
*rgb++ = v;
*rgb = y1;
return 4;
default:
DBG("Empty: %d\n", out_fmt);
return 0;
}
}
static int skipcount(int count, int fmt)
{
switch(fmt) {
case VIDEO_PALETTE_GREY:
return count;
case VIDEO_PALETTE_RGB555:
case VIDEO_PALETTE_RGB565:
case VIDEO_PALETTE_YUV422:
case VIDEO_PALETTE_YUYV:
case VIDEO_PALETTE_UYVY:
return 2*count;
case VIDEO_PALETTE_RGB24:
return 3*count;
case VIDEO_PALETTE_RGB32:
return 4*count;
default:
return 0;
}
}
static int parse_picture(struct cam_data *cam, int size)
{
u8 *obuf, *ibuf, *end_obuf;
int ll, in_uyvy, compressed, origsize, out_fmt;
/* make sure params don't change while we are decoding */
down(&cam->param_lock);
obuf = cam->decompressed_frame.data;
end_obuf = obuf+CPIA_MAX_FRAME_SIZE;
ibuf = cam->raw_image;
origsize = size;
out_fmt = cam->vp.palette;
if ((ibuf[0] != MAGIC_0) || (ibuf[1] != MAGIC_1)) {
LOG("header not found\n");
up(&cam->param_lock);
return -1;
}
if ((ibuf[16] != VIDEOSIZE_QCIF) && (ibuf[16] != VIDEOSIZE_CIF)) {
LOG("wrong video size\n");
up(&cam->param_lock);
return -1;
}
if (ibuf[17] != SUBSAMPLE_422) {
LOG("illegal subtype %d\n",ibuf[17]);
up(&cam->param_lock);
return -1;
}
if (ibuf[18] != YUVORDER_YUYV && ibuf[18] != YUVORDER_UYVY) {
LOG("illegal yuvorder %d\n",ibuf[18]);
up(&cam->param_lock);
return -1;
}
in_uyvy = ibuf[18] == YUVORDER_UYVY;
#if 0
/* FIXME: ROI mismatch occurs when switching capture sizes */
if ((ibuf[24] != cam->params.roi.colStart) ||
(ibuf[25] != cam->params.roi.colEnd) ||
(ibuf[26] != cam->params.roi.rowStart) ||
(ibuf[27] != cam->params.roi.rowEnd)) {
LOG("ROI mismatch\n");
up(&cam->param_lock);
return -1;
}
#endif
if ((ibuf[28] != NOT_COMPRESSED) && (ibuf[28] != COMPRESSED)) {
LOG("illegal compression %d\n",ibuf[28]);
up(&cam->param_lock);
return -1;
}
compressed = (ibuf[28] == COMPRESSED);
if (ibuf[29] != NO_DECIMATION) {
LOG("decimation not supported\n");
up(&cam->param_lock);
return -1;
}
cam->params.yuvThreshold.yThreshold = ibuf[30];
cam->params.yuvThreshold.uvThreshold = ibuf[31];
cam->params.status.systemState = ibuf[32];
cam->params.status.grabState = ibuf[33];
cam->params.status.streamState = ibuf[34];
cam->params.status.fatalError = ibuf[35];
cam->params.status.cmdError = ibuf[36];
cam->params.status.debugFlags = ibuf[37];
cam->params.status.vpStatus = ibuf[38];
cam->params.status.errorCode = ibuf[39];
cam->fps = ibuf[41];
up(&cam->param_lock);
ibuf += FRAME_HEADER_SIZE;
size -= FRAME_HEADER_SIZE;
ll = ibuf[0] | (ibuf[1] << 8);
ibuf += 2;
while (size > 0) {
size -= (ll+2);
if (size < 0) {
DBG("Insufficient data in buffer\n");
return -1;
}
while (ll > 1) {
if (!compressed || (compressed && !(*ibuf & 1))) {
obuf += yuvconvert(ibuf, obuf, out_fmt,
in_uyvy, cam->mmap_kludge);
ibuf += 4;
ll -= 4;
} else {
/*skip compressed interval from previous frame*/
int skipsize = skipcount(*ibuf >> 1, out_fmt);
obuf += skipsize;
if (obuf > end_obuf) {
DBG("Insufficient data in buffer\n");
return -1;
}
++ibuf;
ll--;
}
}
if (ll == 1) {
if (*ibuf != EOL) {
DBG("EOL not found giving up after %d/%d"
" bytes\n", origsize-size, origsize);
return -1;
}
ibuf++; /* skip over EOL */
if ((size > 3) && (ibuf[0] == EOI) && (ibuf[1] == EOI) &&
(ibuf[2] == EOI) && (ibuf[3] == EOI)) {
size -= 4;
break;
}
if (size > 1) {
ll = ibuf[0] | (ibuf[1] << 8);
ibuf += 2; /* skip over line length */
}
} else {
DBG("line length was not 1 but %d after %d/%d bytes\n",
ll, origsize-size, origsize);
return -1;
}
}
cam->decompressed_frame.count = obuf-cam->decompressed_frame.data;
return cam->decompressed_frame.count;
}
/* InitStreamCap wrapper to select correct start line */
static inline int init_stream_cap(struct cam_data *cam)
{
return do_command(cam, CPIA_COMMAND_InitStreamCap,
0, cam->params.streamStartLine, 0, 0);
}
/* update various camera modes and settings */
static void dispatch_commands(struct cam_data *cam)
{
down(&cam->param_lock);
if (cam->cmd_queue==COMMAND_NONE) {
up(&cam->param_lock);
return;
}
DEB_BYTE(cam->cmd_queue);
DEB_BYTE(cam->cmd_queue>>8);
if (cam->cmd_queue & COMMAND_SETCOLOURPARAMS)
do_command(cam, CPIA_COMMAND_SetColourParams,
cam->params.colourParams.brightness,
cam->params.colourParams.contrast,
cam->params.colourParams.saturation, 0);
if (cam->cmd_queue & COMMAND_SETCOMPRESSION)
do_command(cam, CPIA_COMMAND_SetCompression,
cam->params.compression.mode,
cam->params.compression.decimation, 0, 0);
if (cam->cmd_queue & COMMAND_SETFORMAT) {
do_command(cam, CPIA_COMMAND_SetFormat,
cam->params.format.videoSize,
cam->params.format.subSample,
cam->params.format.yuvOrder, 0);
do_command(cam, CPIA_COMMAND_SetROI,
cam->params.roi.colStart, cam->params.roi.colEnd,
cam->params.roi.rowStart, cam->params.roi.rowEnd);
cam->first_frame = 1;
}
if (cam->cmd_queue & COMMAND_SETCOMPRESSIONTARGET)
do_command(cam, CPIA_COMMAND_SetCompressionTarget,
cam->params.compressionTarget.frTargeting,
cam->params.compressionTarget.targetFR,
cam->params.compressionTarget.targetQ, 0);
if (cam->cmd_queue & COMMAND_SETYUVTHRESH)
do_command(cam, CPIA_COMMAND_SetYUVThresh,
cam->params.yuvThreshold.yThreshold,
cam->params.yuvThreshold.uvThreshold, 0, 0);
if (cam->cmd_queue & COMMAND_SETECPTIMING)
do_command(cam, CPIA_COMMAND_SetECPTiming,
cam->params.ecpTiming, 0, 0, 0);
if (cam->cmd_queue & COMMAND_SETCOMPRESSIONPARAMS)
do_command_extended(cam, CPIA_COMMAND_SetCompressionParams,
0, 0, 0, 0,
cam->params.compressionParams.hysteresis,
cam->params.compressionParams.threshMax,
cam->params.compressionParams.smallStep,
cam->params.compressionParams.largeStep,
cam->params.compressionParams.decimationHysteresis,
cam->params.compressionParams.frDiffStepThresh,
cam->params.compressionParams.qDiffStepThresh,
cam->params.compressionParams.decimationThreshMod);
if (cam->cmd_queue & COMMAND_SETEXPOSURE)
do_command_extended(cam, CPIA_COMMAND_SetExposure,
cam->params.exposure.gainMode,
cam->params.exposure.expMode,
cam->params.exposure.compMode,
cam->params.exposure.centreWeight,
cam->params.exposure.gain,
cam->params.exposure.fineExp,
cam->params.exposure.coarseExpLo,
cam->params.exposure.coarseExpHi,
cam->params.exposure.redComp,
cam->params.exposure.green1Comp,
cam->params.exposure.green2Comp,
cam->params.exposure.blueComp);
if (cam->cmd_queue & COMMAND_SETCOLOURBALANCE) {
if (cam->params.colourBalance.balanceModeIsAuto) {
do_command(cam, CPIA_COMMAND_SetColourBalance,
2, 0, 0, 0);
} else {
do_command(cam, CPIA_COMMAND_SetColourBalance,
1,
cam->params.colourBalance.redGain,
cam->params.colourBalance.greenGain,
cam->params.colourBalance.blueGain);
do_command(cam, CPIA_COMMAND_SetColourBalance,
3, 0, 0, 0);
}
}
if (cam->cmd_queue & COMMAND_SETSENSORFPS)
do_command(cam, CPIA_COMMAND_SetSensorFPS,
cam->params.sensorFps.divisor,
cam->params.sensorFps.baserate, 0, 0);
if (cam->cmd_queue & COMMAND_SETAPCOR)
do_command(cam, CPIA_COMMAND_SetApcor,
cam->params.apcor.gain1,
cam->params.apcor.gain2,
cam->params.apcor.gain4,
cam->params.apcor.gain8);
if (cam->cmd_queue & COMMAND_SETFLICKERCTRL)
do_command(cam, CPIA_COMMAND_SetFlickerCtrl,
cam->params.flickerControl.flickerMode,
cam->params.flickerControl.coarseJump,
cam->params.flickerControl.allowableOverExposure, 0);
if (cam->cmd_queue & COMMAND_SETVLOFFSET)
do_command(cam, CPIA_COMMAND_SetVLOffset,
cam->params.vlOffset.gain1,
cam->params.vlOffset.gain2,
cam->params.vlOffset.gain4,
cam->params.vlOffset.gain8);
if (cam->cmd_queue & COMMAND_PAUSE)
do_command(cam, CPIA_COMMAND_EndStreamCap, 0, 0, 0, 0);
if (cam->cmd_queue & COMMAND_RESUME)
init_stream_cap(cam);
if (cam->cmd_queue & COMMAND_SETLIGHTS && cam->params.qx3.qx3_detected) {
int p1 = (cam->params.qx3.bottomlight == 0) << 1;
int p2 = (cam->params.qx3.toplight == 0) << 3;
do_command(cam, CPIA_COMMAND_WriteVCReg, 0x90, 0x8F, 0x50, 0);
do_command(cam, CPIA_COMMAND_WriteMCPort, 2, 0, (p1|p2|0xE0), 0);
}
up(&cam->param_lock);
cam->cmd_queue = COMMAND_NONE;
return;
}
/* kernel thread function to read image from camera */
static void fetch_frame(void *data)
{
int image_size, retry;
struct cam_data *cam = (struct cam_data *)data;
unsigned long oldjif, rate, diff;
/* Allow up to two bad images in a row to be read and
* ignored before an error is reported */
for (retry = 0; retry < 3; ++retry) {
if (retry)
DBG("retry=%d\n", retry);
if (!cam->ops)
continue;
/* load first frame always uncompressed */
if (cam->first_frame &&
cam->params.compression.mode != CPIA_COMPRESSION_NONE)
do_command(cam, CPIA_COMMAND_SetCompression,
CPIA_COMPRESSION_NONE,
NO_DECIMATION, 0, 0);
/* init camera upload */
if (do_command(cam, CPIA_COMMAND_SetGrabMode,
CPIA_GRAB_CONTINUOUS, 0, 0, 0))
continue;
if (do_command(cam, CPIA_COMMAND_GrabFrame, 0,
cam->params.streamStartLine, 0, 0))
continue;
if (cam->ops->wait_for_stream_ready) {
/* loop until image ready */
do_command(cam, CPIA_COMMAND_GetCameraStatus,0,0,0,0);
while (cam->params.status.streamState != STREAM_READY) {
if (current->need_resched)
schedule();
current->state = TASK_INTERRUPTIBLE;
/* sleep for 10 ms, hopefully ;) */
schedule_timeout(10*HZ/1000);
if (signal_pending(current))
return;
do_command(cam, CPIA_COMMAND_GetCameraStatus,
0, 0, 0, 0);
}
}
/* grab image from camera */
if (current->need_resched)
schedule();
oldjif = jiffies;
image_size = cam->ops->streamRead(cam->lowlevel_data,
cam->raw_image, 0);
if (image_size <= 0) {
DBG("streamRead failed: %d\n", image_size);
continue;
}
rate = image_size * HZ / 1024;
diff = jiffies-oldjif;
cam->transfer_rate = diff==0 ? rate : rate/diff;
/* diff==0 ? unlikely but possible */
/* camera idle now so dispatch queued commands */
dispatch_commands(cam);
/* Update our knowledge of the camera state */
do_command(cam, CPIA_COMMAND_GetColourBalance, 0, 0, 0, 0);
do_command(cam, CPIA_COMMAND_GetExposure, 0, 0, 0, 0);
do_command(cam, CPIA_COMMAND_ReadMCPorts, 0, 0, 0, 0);
/* decompress and convert image to by copying it from
* raw_image to decompressed_frame
*/
if (current->need_resched)
schedule();
cam->image_size = parse_picture(cam, image_size);
if (cam->image_size <= 0)
DBG("parse_picture failed %d\n", cam->image_size);
else
break;
}
if (retry < 3) {
/* FIXME: this only works for double buffering */
if (cam->frame[cam->curframe].state == FRAME_READY) {
memcpy(cam->frame[cam->curframe].data,
cam->decompressed_frame.data,
cam->decompressed_frame.count);
cam->frame[cam->curframe].state = FRAME_DONE;
} else
cam->decompressed_frame.state = FRAME_DONE;
#if 0
if (cam->first_frame &&
cam->params.compression.mode != CPIA_COMPRESSION_NONE) {
cam->first_frame = 0;
cam->cmd_queue |= COMMAND_SETCOMPRESSION;
}
#else
if (cam->first_frame) {
cam->first_frame = 0;
cam->cmd_queue |= COMMAND_SETCOMPRESSION;
cam->cmd_queue |= COMMAND_SETEXPOSURE;
}
#endif
}
}
static int capture_frame(struct cam_data *cam, struct video_mmap *vm)
{
int retval = 0;
if (!cam->frame_buf) {
/* we do lazy allocation */
if ((retval = allocate_frame_buf(cam)))
return retval;
}
/* FIXME: the first frame seems to be captured by the camera
without regards to any initial settings, so we throw away
that one, the next one is generated with our settings
(exposure, color balance, ...)
*/
if (cam->first_frame) {
cam->curframe = vm->frame;
cam->frame[cam->curframe].state = FRAME_READY;
fetch_frame(cam);
if (cam->frame[cam->curframe].state != FRAME_DONE)
retval = -EIO;
}
cam->curframe = vm->frame;
cam->frame[cam->curframe].state = FRAME_READY;
fetch_frame(cam);
if (cam->frame[cam->curframe].state != FRAME_DONE)
retval=-EIO;
return retval;
}
static int goto_high_power(struct cam_data *cam)
{
if (do_command(cam, CPIA_COMMAND_GotoHiPower, 0, 0, 0, 0))
return -1;
mdelay(100); /* windows driver does it too */
if (do_command(cam, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0))
return -1;
if (cam->params.status.systemState == HI_POWER_STATE) {
DBG("camera now in HIGH power state\n");
return 0;
}
printstatus(cam);
return -1;
}
static int goto_low_power(struct cam_data *cam)
{
if (do_command(cam, CPIA_COMMAND_GotoLoPower, 0, 0, 0, 0))
return -1;
if (do_command(cam, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0))
return -1;
if (cam->params.status.systemState == LO_POWER_STATE) {
DBG("camera now in LOW power state\n");
return 0;
}
printstatus(cam);
return -1;
}
static void save_camera_state(struct cam_data *cam)
{
do_command(cam, CPIA_COMMAND_GetColourBalance, 0, 0, 0, 0);
do_command(cam, CPIA_COMMAND_GetExposure, 0, 0, 0, 0);
DBG("%d/%d/%d/%d/%d/%d/%d/%d\n",
cam->params.exposure.gain,
cam->params.exposure.fineExp,
cam->params.exposure.coarseExpLo,
cam->params.exposure.coarseExpHi,
cam->params.exposure.redComp,
cam->params.exposure.green1Comp,
cam->params.exposure.green2Comp,
cam->params.exposure.blueComp);
DBG("%d/%d/%d\n",
cam->params.colourBalance.redGain,
cam->params.colourBalance.greenGain,
cam->params.colourBalance.blueGain);
}
static void set_camera_state(struct cam_data *cam)
{
if(cam->params.colourBalance.balanceModeIsAuto) {
do_command(cam, CPIA_COMMAND_SetColourBalance,
2, 0, 0, 0);
} else {
do_command(cam, CPIA_COMMAND_SetColourBalance,
1,
cam->params.colourBalance.redGain,
cam->params.colourBalance.greenGain,
cam->params.colourBalance.blueGain);
do_command(cam, CPIA_COMMAND_SetColourBalance,
3, 0, 0, 0);
}
do_command_extended(cam, CPIA_COMMAND_SetExposure,
cam->params.exposure.gainMode, 1, 1,
cam->params.exposure.centreWeight,
cam->params.exposure.gain,
cam->params.exposure.fineExp,
cam->params.exposure.coarseExpLo,
cam->params.exposure.coarseExpHi,
cam->params.exposure.redComp,
cam->params.exposure.green1Comp,
cam->params.exposure.green2Comp,
cam->params.exposure.blueComp);
do_command_extended(cam, CPIA_COMMAND_SetExposure,
0, 3, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0);
if (!cam->params.exposure.gainMode)
cam->params.exposure.gainMode = 2;
if (!cam->params.exposure.expMode)
cam->params.exposure.expMode = 2;
if (!cam->params.exposure.centreWeight)
cam->params.exposure.centreWeight = 1;
cam->cmd_queue = COMMAND_SETCOMPRESSION |
COMMAND_SETCOMPRESSIONTARGET |
COMMAND_SETCOLOURPARAMS |
COMMAND_SETFORMAT |
COMMAND_SETYUVTHRESH |
COMMAND_SETECPTIMING |
COMMAND_SETCOMPRESSIONPARAMS |
#if 0
COMMAND_SETEXPOSURE |
#endif
COMMAND_SETCOLOURBALANCE |
COMMAND_SETSENSORFPS |
COMMAND_SETAPCOR |
COMMAND_SETFLICKERCTRL |
COMMAND_SETVLOFFSET;
dispatch_commands(cam);
save_camera_state(cam);
return;
}
static void get_version_information(struct cam_data *cam)
{
/* GetCPIAVersion */
do_command(cam, CPIA_COMMAND_GetCPIAVersion, 0, 0, 0, 0);
/* GetPnPID */
do_command(cam, CPIA_COMMAND_GetPnPID, 0, 0, 0, 0);
}
/* initialize camera */
static int reset_camera(struct cam_data *cam)
{
/* Start the camera in low power mode */
if (goto_low_power(cam)) {
if (cam->params.status.systemState != WARM_BOOT_STATE)
return -ENODEV;
/* FIXME: this is just dirty trial and error */
reset_camera_struct(cam);
goto_high_power(cam);
do_command(cam, CPIA_COMMAND_DiscardFrame, 0, 0, 0, 0);
if (goto_low_power(cam))
return -NODEV;
}
/* procedure described in developer's guide p3-28 */
/* Check the firmware version FIXME: should we check PNPID? */
cam->params.version.firmwareVersion = 0;
get_version_information(cam);
if (cam->params.version.firmwareVersion != 1)
return -ENODEV;
/* set QX3 detected flag */
cam->params.qx3.qx3_detected = (cam->params.pnpID.vendor == 0x0813 &&
cam->params.pnpID.product == 0x0001);
/* The fatal error checking should be done after
* the camera powers up (developer's guide p 3-38) */
/* Set streamState before transition to high power to avoid bug
* in firmware 1-02 */
do_command(cam, CPIA_COMMAND_ModifyCameraStatus, STREAMSTATE, 0,
STREAM_NOT_READY, 0);
/* GotoHiPower */
if (goto_high_power(cam))
return -ENODEV;
/* Check the camera status */
if (do_command(cam, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0))
return -EIO;
if (cam->params.status.fatalError) {
DBG("fatal_error: %#04x\n",
cam->params.status.fatalError);
DBG("vp_status: %#04x\n",
cam->params.status.vpStatus);
if (cam->params.status.fatalError & ~(COM_FLAG|CPIA_FLAG)) {
/* Fatal error in camera */
return -EIO;
} else if (cam->params.status.fatalError & (COM_FLAG|CPIA_FLAG)) {
/* Firmware 1-02 may do this for parallel port cameras,
* just clear the flags (developer's guide p 3-38) */
do_command(cam, CPIA_COMMAND_ModifyCameraStatus,
FATALERROR, ~(COM_FLAG|CPIA_FLAG), 0, 0);
}
}
/* Check the camera status again */
if (cam->params.status.fatalError) {
if (cam->params.status.fatalError)
return -EIO;
}
/* VPVersion can't be retrieved before the camera is in HiPower,
* so get it here instead of in get_version_information. */
do_command(cam, CPIA_COMMAND_GetVPVersion, 0, 0, 0, 0);
/* set camera to a known state */
set_camera_state(cam);
return 0;
}
static void put_cam(struct cpia_camera_ops* ops)
{
if (ops->owner)
__MOD_DEC_USE_COUNT(ops->owner);
}
/* ------------------------- V4L interface --------------------- */
static int cpia_open(struct inode *inode, struct file *file)
{
struct video_device *dev = video_devdata(file);
struct cam_data *cam = dev->priv;
int err;
if (!cam) {
DBG("Internal error, cam_data not found!\n");
return -ENODEV;
}
if (cam->open_count > 0) {
DBG("Camera already open\n");
return -EBUSY;
}
if (!try_inc_mod_count(cam->ops->owner))
return -ENODEV;
down(&cam->busy_lock);
err = -ENOMEM;
if (!cam->raw_image) {
cam->raw_image = rvmalloc(CPIA_MAX_IMAGE_SIZE);
if (!cam->raw_image)
goto oops;
}
if (!cam->decompressed_frame.data) {
cam->decompressed_frame.data = rvmalloc(CPIA_MAX_FRAME_SIZE);
if (!cam->decompressed_frame.data)
goto oops;
}
/* open cpia */
err = -ENODEV;
if (cam->ops->open(cam->lowlevel_data))
goto oops;
/* reset the camera */
if ((err = reset_camera(cam)) != 0) {
cam->ops->close(cam->lowlevel_data);
goto oops;
}
/* Set ownership of /proc/cpia/videoX to current user */
if(cam->proc_entry)
cam->proc_entry->uid = current->uid;
/* set mark for loading first frame uncompressed */
cam->first_frame = 1;
/* init it to something */
cam->mmap_kludge = 0;
++cam->open_count;
file->private_data = dev;
up(&cam->busy_lock);
return 0;
oops:
if (cam->decompressed_frame.data) {
rvfree(cam->decompressed_frame.data, CPIA_MAX_FRAME_SIZE);
cam->decompressed_frame.data = NULL;
}
if (cam->raw_image) {
rvfree(cam->raw_image, CPIA_MAX_IMAGE_SIZE);
cam->raw_image = NULL;
}
up(&cam->busy_lock);
put_cam(cam->ops);
return err;
}
static int cpia_close(struct inode *inode, struct file *file)
{
struct video_device *dev = file->private_data;
struct cam_data *cam = dev->priv;
if (cam->ops) {
/* Return ownership of /proc/cpia/videoX to root */
if(cam->proc_entry)
cam->proc_entry->uid = 0;
/* save camera state for later open (developers guide ch 3.5.3) */
save_camera_state(cam);
/* GotoLoPower */
goto_low_power(cam);
/* Update the camera status */
do_command(cam, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0);
/* cleanup internal state stuff */
free_frames(cam->frame);
/* close cpia */
cam->ops->close(cam->lowlevel_data);
put_cam(cam->ops);
}
if (--cam->open_count == 0) {
/* clean up capture-buffers */
if (cam->raw_image) {
rvfree(cam->raw_image, CPIA_MAX_IMAGE_SIZE);
cam->raw_image = NULL;
}
if (cam->decompressed_frame.data) {
rvfree(cam->decompressed_frame.data, CPIA_MAX_FRAME_SIZE);
cam->decompressed_frame.data = NULL;
}
if (cam->frame_buf)
free_frame_buf(cam);
if (!cam->ops)
kfree(cam);
}
file->private_data = NULL;
return 0;
}
static int cpia_read(struct file *file, char *buf,
size_t count, loff_t *ppos)
{
struct video_device *dev = file->private_data;
struct cam_data *cam = dev->priv;
/* make this _really_ smp and multithread-safe */
if (down_interruptible(&cam->busy_lock))
return -EINTR;
if (!buf) {
DBG("buf NULL\n");
up(&cam->busy_lock);
return -EINVAL;
}
if (!count) {
DBG("count 0\n");
up(&cam->busy_lock);
return 0;
}
if (!cam->ops) {
DBG("ops NULL\n");
up(&cam->busy_lock);
return -ENODEV;
}
/* upload frame */
cam->decompressed_frame.state = FRAME_READY;
cam->mmap_kludge=0;
fetch_frame(cam);
if (cam->decompressed_frame.state != FRAME_DONE) {
DBG("upload failed %d/%d\n", cam->decompressed_frame.count,
cam->decompressed_frame.state);
up(&cam->busy_lock);
return -EIO;
}
cam->decompressed_frame.state = FRAME_UNUSED;
/* copy data to user space */
if (cam->decompressed_frame.count > count) {
DBG("count wrong: %d, %lu\n", cam->decompressed_frame.count,
(unsigned long) count);
up(&cam->busy_lock);
return -EFAULT;
}
if (copy_to_user(buf, cam->decompressed_frame.data,
cam->decompressed_frame.count)) {
DBG("copy_to_user failed\n");
up(&cam->busy_lock);
return -EFAULT;
}
up(&cam->busy_lock);
return cam->decompressed_frame.count;
}
static int cpia_do_ioctl(struct inode *inode, struct file *file,
unsigned int ioctlnr, void *arg)
{
struct video_device *dev = file->private_data;
struct cam_data *cam = dev->priv;
int retval = 0;
if (!cam || !cam->ops)
return -ENODEV;
/* make this _really_ smp-safe */
if (down_interruptible(&cam->busy_lock))
return -EINTR;
//DBG("cpia_ioctl: %u\n", ioctlnr);
switch (ioctlnr) {
/* query capabilites */
case VIDIOCGCAP:
{
struct video_capability *b = arg;
DBG("VIDIOCGCAP\n");
strcpy(b->name, "CPiA Camera");
b->type = VID_TYPE_CAPTURE;
b->channels = 1;
b->audios = 0;
b->maxwidth = 352; /* VIDEOSIZE_CIF */
b->maxheight = 288;
b->minwidth = 48; /* VIDEOSIZE_48_48 */
b->minheight = 48;
break;
}
/* get/set video source - we are a camera and nothing else */
case VIDIOCGCHAN:
{
struct video_channel *v = arg;
DBG("VIDIOCGCHAN\n");
if (v->channel != 0) {
retval = -EINVAL;
break;
}
v->channel = 0;
strcpy(v->name, "Camera");
v->tuners = 0;
v->flags = 0;
v->type = VIDEO_TYPE_CAMERA;
v->norm = 0;
break;
}
case VIDIOCSCHAN:
{
struct video_channel *v = arg;
DBG("VIDIOCSCHAN\n");
if (v->channel != 0)
retval = -EINVAL;
break;
}
/* image properties */
case VIDIOCGPICT:
{
struct video_picture *pic = arg;
DBG("VIDIOCGPICT\n");
*pic = cam->vp;
break;
}
case VIDIOCSPICT:
{
struct video_picture *vp = arg;
DBG("VIDIOCSPICT\n");
/* check validity */
DBG("palette: %d\n", vp->palette);
DBG("depth: %d\n", vp->depth);
if (!valid_mode(vp->palette, vp->depth)) {
retval = -EINVAL;
break;
}
down(&cam->param_lock);
/* brightness, colour, contrast need no check 0-65535 */
cam->vp = *vp;
/* update cam->params.colourParams */
cam->params.colourParams.brightness = vp->brightness*100/65535;
cam->params.colourParams.contrast = vp->contrast*100/65535;
cam->params.colourParams.saturation = vp->colour*100/65535;
/* contrast is in steps of 8, so round */
cam->params.colourParams.contrast =
((cam->params.colourParams.contrast + 3) / 8) * 8;
if (cam->params.version.firmwareVersion == 1 &&
cam->params.version.firmwareRevision == 2 &&
cam->params.colourParams.contrast > 80) {
/* 1-02 firmware limits contrast to 80 */
cam->params.colourParams.contrast = 80;
}
/* queue command to update camera */
cam->cmd_queue |= COMMAND_SETCOLOURPARAMS;
up(&cam->param_lock);
DBG("VIDIOCSPICT: %d / %d // %d / %d / %d / %d\n",
vp->depth, vp->palette, vp->brightness, vp->hue,
vp->colour, vp->contrast);
break;
}
/* get/set capture window */
case VIDIOCGWIN:
{
struct video_window *vw = arg;
DBG("VIDIOCGWIN\n");
*vw = cam->vw;
break;
}
case VIDIOCSWIN:
{
/* copy_from_user, check validity, copy to internal structure */
struct video_window *vw = arg;
DBG("VIDIOCSWIN\n");
if (vw->clipcount != 0) { /* clipping not supported */
retval = -EINVAL;
break;
}
if (vw->clips != NULL) { /* clipping not supported */
retval = -EINVAL;
break;
}
/* we set the video window to something smaller or equal to what
* is requested by the user???
*/
down(&cam->param_lock);
if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
int video_size = match_videosize(vw->width, vw->height);
if (video_size < 0) {
retval = -EINVAL;
up(&cam->param_lock);
break;
}
cam->video_size = video_size;
set_vw_size(cam);
DBG("%d / %d\n", cam->vw.width, cam->vw.height);
cam->cmd_queue |= COMMAND_SETFORMAT;
}
up(&cam->param_lock);
/* setformat ignored by camera during streaming,
* so stop/dispatch/start */
if (cam->cmd_queue & COMMAND_SETFORMAT) {
DBG("\n");
dispatch_commands(cam);
}
DBG("%d/%d:%d\n", cam->video_size,
cam->vw.width, cam->vw.height);
break;
}
/* mmap interface */
case VIDIOCGMBUF:
{
struct video_mbuf *vm = arg;
int i;
DBG("VIDIOCGMBUF\n");
memset(vm, 0, sizeof(*vm));
vm->size = CPIA_MAX_FRAME_SIZE*FRAME_NUM;
vm->frames = FRAME_NUM;
for (i = 0; i < FRAME_NUM; i++)
vm->offsets[i] = CPIA_MAX_FRAME_SIZE * i;
break;
}
case VIDIOCMCAPTURE:
{
struct video_mmap *vm = arg;
int video_size;
DBG("VIDIOCMCAPTURE: %d / %d / %dx%d\n", vm->format, vm->frame,
vm->width, vm->height);
if (vm->frame<0||vm->frame>=FRAME_NUM) {
retval = -EINVAL;
break;
}
/* set video format */
cam->vp.palette = vm->format;
switch(vm->format) {
case VIDEO_PALETTE_GREY:
cam->vp.depth=8;
break;
case VIDEO_PALETTE_RGB555:
case VIDEO_PALETTE_RGB565:
case VIDEO_PALETTE_YUV422:
case VIDEO_PALETTE_YUYV:
case VIDEO_PALETTE_UYVY:
cam->vp.depth = 16;
break;
case VIDEO_PALETTE_RGB24:
cam->vp.depth = 24;
break;
case VIDEO_PALETTE_RGB32:
cam->vp.depth = 32;
break;
default:
retval = -EINVAL;
break;
}
if (retval)
break;
/* set video size */
video_size = match_videosize(vm->width, vm->height);
if (video_size < 0) {
retval = -EINVAL;
break;
}
if (video_size != cam->video_size) {
cam->video_size = video_size;
set_vw_size(cam);
cam->cmd_queue |= COMMAND_SETFORMAT;
dispatch_commands(cam);
}
/* according to v4l-spec we must start streaming here */
cam->mmap_kludge = 1;
retval = capture_frame(cam, vm);
break;
}
case VIDIOCSYNC:
{
int *frame = arg;
//DBG("VIDIOCSYNC: %d\n", *frame);
if (*frame<0 || *frame >= FRAME_NUM) {
retval = -EINVAL;
break;
}
switch (cam->frame[*frame].state) {
case FRAME_UNUSED:
case FRAME_READY:
case FRAME_GRABBING:
DBG("sync to unused frame %d\n", *frame);
retval = -EINVAL;
break;
case FRAME_DONE:
cam->frame[*frame].state = FRAME_UNUSED;
//DBG("VIDIOCSYNC: %d synced\n", *frame);
break;
}
if (retval == -EINTR) {
/* FIXME - xawtv does not handle this nice */
retval = 0;
}
break;
}
/* pointless to implement overlay with this camera */
case VIDIOCCAPTURE:
case VIDIOCGFBUF:
case VIDIOCSFBUF:
case VIDIOCKEY:
retval = -EINVAL;
break;
/* tuner interface - we have none */
case VIDIOCGTUNER:
case VIDIOCSTUNER:
case VIDIOCGFREQ:
case VIDIOCSFREQ:
retval = -EINVAL;
break;
/* audio interface - we have none */
case VIDIOCGAUDIO:
case VIDIOCSAUDIO:
retval = -EINVAL;
break;
default:
retval = -ENOIOCTLCMD;
break;
}
up(&cam->busy_lock);
return retval;
}
static int cpia_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
return video_usercopy(inode, file, cmd, arg, cpia_do_ioctl);
}
/* FIXME */
static int cpia_mmap(struct file *file, struct vm_area_struct *vma)
{
struct video_device *dev = file->private_data;
unsigned long start = vma->vm_start;
unsigned long size = vma->vm_end - vma->vm_start;
unsigned long page, pos;
struct cam_data *cam = dev->priv;
int retval;
if (!cam || !cam->ops)
return -ENODEV;
DBG("cpia_mmap: %ld\n", size);
if (size > FRAME_NUM*CPIA_MAX_FRAME_SIZE)
return -EINVAL;
if (!cam || !cam->ops)
return -ENODEV;
/* make this _really_ smp-safe */
if (down_interruptible(&cam->busy_lock))
return -EINTR;
if (!cam->frame_buf) { /* we do lazy allocation */
if ((retval = allocate_frame_buf(cam))) {
up(&cam->busy_lock);
return retval;
}
}
pos = (unsigned long)(cam->frame_buf);
while (size > 0) {
page = kvirt_to_pa(pos);
if (remap_page_range(start, page, PAGE_SIZE, PAGE_SHARED)) {
up(&cam->busy_lock);
return -EAGAIN;
}
start += PAGE_SIZE;
pos += PAGE_SIZE;
if (size > PAGE_SIZE)
size -= PAGE_SIZE;
else
size = 0;
}
DBG("cpia_mmap: %ld\n", size);
up(&cam->busy_lock);
return 0;
}
static struct file_operations cpia_fops = {
owner: THIS_MODULE,
open: cpia_open,
release: cpia_close,
read: cpia_read,
mmap: cpia_mmap,
ioctl: cpia_ioctl,
llseek: no_llseek,
};
static struct video_device cpia_template = {
owner: THIS_MODULE,
name: "CPiA Camera",
type: VID_TYPE_CAPTURE,
hardware: VID_HARDWARE_CPIA,
fops: &cpia_fops,
minor: -1,
};
/* initialise cam_data structure */
static void reset_camera_struct(struct cam_data *cam)
{
/* The following parameter values are the defaults from
* "Software Developer's Guide for CPiA Cameras". Any changes
* to the defaults are noted in comments. */
cam->params.colourParams.brightness = 50;
cam->params.colourParams.contrast = 48;
cam->params.colourParams.saturation = 50;
cam->params.exposure.gainMode = 2;
cam->params.exposure.expMode = 2; /* AEC */
cam->params.exposure.compMode = 1;
cam->params.exposure.centreWeight = 1;
cam->params.exposure.gain = 0;
cam->params.exposure.fineExp = 0;
cam->params.exposure.coarseExpLo = 185;
cam->params.exposure.coarseExpHi = 0;
cam->params.exposure.redComp = 220;
cam->params.exposure.green1Comp = 214;
cam->params.exposure.green2Comp = 214;
cam->params.exposure.blueComp = 230;
cam->params.colourBalance.balanceModeIsAuto = 1;
cam->params.colourBalance.redGain = 32;
cam->params.colourBalance.greenGain = 6;
cam->params.colourBalance.blueGain = 92;
cam->params.apcor.gain1 = 0x1c;
cam->params.apcor.gain2 = 0x1a;
cam->params.apcor.gain4 = 0x2d;
cam->params.apcor.gain8 = 0x2a;
cam->params.flickerControl.flickerMode = 0;
cam->params.flickerControl.coarseJump =
flicker_jumps[cam->mainsFreq]
[cam->params.sensorFps.baserate]
[cam->params.sensorFps.divisor];
cam->params.vlOffset.gain1 = 24;
cam->params.vlOffset.gain2 = 28;
cam->params.vlOffset.gain4 = 30;
cam->params.vlOffset.gain8 = 30;
cam->params.compressionParams.hysteresis = 3;
cam->params.compressionParams.threshMax = 11;
cam->params.compressionParams.smallStep = 1;
cam->params.compressionParams.largeStep = 3;
cam->params.compressionParams.decimationHysteresis = 2;
cam->params.compressionParams.frDiffStepThresh = 5;
cam->params.compressionParams.qDiffStepThresh = 3;
cam->params.compressionParams.decimationThreshMod = 2;
/* End of default values from Software Developer's Guide */
cam->transfer_rate = 0;
/* Set Sensor FPS to 15fps. This seems better than 30fps
* for indoor lighting. */
cam->params.sensorFps.divisor = 1;
cam->params.sensorFps.baserate = 1;
cam->params.yuvThreshold.yThreshold = 6; /* From windows driver */
cam->params.yuvThreshold.uvThreshold = 6; /* From windows driver */
cam->params.format.subSample = SUBSAMPLE_422;
cam->params.format.yuvOrder = YUVORDER_YUYV;
cam->params.compression.mode = CPIA_COMPRESSION_AUTO;
cam->params.compressionTarget.frTargeting =
CPIA_COMPRESSION_TARGET_QUALITY;
cam->params.compressionTarget.targetFR = 15; /* From windows driver */
cam->params.compressionTarget.targetQ = 5; /* From windows driver */
cam->params.qx3.qx3_detected = 0;
cam->params.qx3.toplight = 0;
cam->params.qx3.bottomlight = 0;
cam->params.qx3.button = 0;
cam->params.qx3.cradled = 0;
cam->video_size = VIDEOSIZE_CIF;
cam->vp.colour = 32768; /* 50% */
cam->vp.hue = 32768; /* 50% */
cam->vp.brightness = 32768; /* 50% */
cam->vp.contrast = 32768; /* 50% */
cam->vp.whiteness = 0; /* not used -> grayscale only */
cam->vp.depth = 24; /* to be set by user */
cam->vp.palette = VIDEO_PALETTE_RGB24; /* to be set by user */
cam->vw.x = 0;
cam->vw.y = 0;
set_vw_size(cam);
cam->vw.chromakey = 0;
/* PP NOTE: my extension to use vw.flags for this, bear it! */
cam->vw.flags = 0;
cam->vw.clipcount = 0;
cam->vw.clips = NULL;
cam->cmd_queue = COMMAND_NONE;
cam->first_frame = 0;
return;
}
/* initialize cam_data structure */
static void init_camera_struct(struct cam_data *cam,
struct cpia_camera_ops *ops )
{
int i;
/* Default everything to 0 */
memset(cam, 0, sizeof(struct cam_data));
cam->ops = ops;
init_MUTEX(&cam->param_lock);
init_MUTEX(&cam->busy_lock);
reset_camera_struct(cam);
cam->proc_entry = NULL;
memcpy(&cam->vdev, &cpia_template, sizeof(cpia_template));
cam->vdev.priv = cam;
cam->curframe = 0;
for (i = 0; i < FRAME_NUM; i++) {
cam->frame[i].width = 0;
cam->frame[i].height = 0;
cam->frame[i].state = FRAME_UNUSED;
cam->frame[i].data = NULL;
}
cam->decompressed_frame.width = 0;
cam->decompressed_frame.height = 0;
cam->decompressed_frame.state = FRAME_UNUSED;
cam->decompressed_frame.data = NULL;
}
struct cam_data *cpia_register_camera(struct cpia_camera_ops *ops, void *lowlevel)
{
struct cam_data *camera;
if ((camera = kmalloc(sizeof(struct cam_data), GFP_KERNEL)) == NULL)
return NULL;
init_camera_struct( camera, ops );
camera->lowlevel_data = lowlevel;
/* register v4l device */
if (video_register_device(&camera->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
kfree(camera);
printk(KERN_DEBUG "video_register_device failed\n");
return NULL;
}
/* get version information from camera: open/reset/close */
/* open cpia */
if (camera->ops->open(camera->lowlevel_data))
return camera;
/* reset the camera */
if (reset_camera(camera) != 0) {
camera->ops->close(camera->lowlevel_data);
return camera;
}
/* close cpia */
camera->ops->close(camera->lowlevel_data);
#ifdef CONFIG_PROC_FS
create_proc_cpia_cam(camera);
#endif
printk(KERN_INFO " CPiA Version: %d.%02d (%d.%d)\n",
camera->params.version.firmwareVersion,
camera->params.version.firmwareRevision,
camera->params.version.vcVersion,
camera->params.version.vcRevision);
printk(KERN_INFO " CPiA PnP-ID: %04x:%04x:%04x\n",
camera->params.pnpID.vendor,
camera->params.pnpID.product,
camera->params.pnpID.deviceRevision);
printk(KERN_INFO " VP-Version: %d.%d %04x\n",
camera->params.vpVersion.vpVersion,
camera->params.vpVersion.vpRevision,
camera->params.vpVersion.cameraHeadID);
return camera;
}
void cpia_unregister_camera(struct cam_data *cam)
{
DBG("unregistering video\n");
video_unregister_device(&cam->vdev);
if (cam->open_count) {
put_cam(cam->ops);
DBG("camera open -- setting ops to NULL\n");
cam->ops = NULL;
}
#ifdef CONFIG_PROC_FS
DBG("destroying /proc/cpia/video%d\n", cam->vdev.minor);
destroy_proc_cpia_cam(cam);
#endif
if (!cam->open_count) {
DBG("freeing camera\n");
kfree(cam);
}
}
static int __init cpia_init(void)
{
printk(KERN_INFO "%s v%d.%d.%d\n", ABOUT,
CPIA_MAJ_VER, CPIA_MIN_VER, CPIA_PATCH_VER);
#ifdef CONFIG_PROC_FS
proc_cpia_create();
#endif
#ifdef CONFIG_KMOD
#ifdef CONFIG_VIDEO_CPIA_PP_MODULE
request_module("cpia_pp");
#endif
#ifdef CONFIG_VIDEO_CPIA_USB_MODULE
request_module("cpia_usb");
#endif
#endif /* CONFIG_KMOD */
#ifdef CONFIG_VIDEO_CPIA_PP
cpia_pp_init();
#endif
#ifdef CONFIG_VIDEO_CPIA_USB
cpia_usb_init();
#endif
return 0;
}
static void __exit cpia_exit(void)
{
#ifdef CONFIG_PROC_FS
proc_cpia_destroy();
#endif
}
module_init(cpia_init);
module_exit(cpia_exit);
/* Exported symbols for modules. */
EXPORT_SYMBOL(cpia_register_camera);
EXPORT_SYMBOL(cpia_unregister_camera);
