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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/media/video/cpia.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/media/video/cpia.c')
-rw-r--r--drivers/media/video/cpia.c4073
1 files changed, 4073 insertions, 0 deletions
diff --git a/drivers/media/video/cpia.c b/drivers/media/video/cpia.c
new file mode 100644
index 000000000000..8c08b7f1ad23
--- /dev/null
+++ b/drivers/media/video/cpia.c
@@ -0,0 +1,4073 @@
+/*
+ * 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/moduleparam.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/ctype.h>
+#include <linux/pagemap.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/semaphore.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_param(video_nr, int, 0);
+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
+
+static unsigned short colorspace_conv = 0;
+module_param(colorspace_conv, ushort, 0444);
+MODULE_PARM_DESC(colorspace_conv,
+ "\n<n> Colorspace conversion:"
+ "\n0 = disable"
+ "\n1 = enable"
+ "\nDefault value is 0"
+ "\n");
+
+#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_ResetFrameCounter (INPUT | CPIA_MODULE_VP_CTRL | 2)
+#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_GrabReset (OUTPUT | CPIA_MODULE_CAPTURE | 15)
+
+#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)
+#define CPIA_COMMAND_Null (OUTPUT | CPIA_MODULE_DEBUG | 11)
+
+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
+
+#define ROUND_UP_EXP_FOR_FLICKER 15
+
+/* Constants for automatic frame rate adjustment */
+#define MAX_EXP 302
+#define MAX_EXP_102 255
+#define LOW_EXP 140
+#define VERY_LOW_EXP 70
+#define TC 94
+#define EXP_ACC_DARK 50
+#define EXP_ACC_LIGHT 90
+#define HIGH_COMP_102 160
+#define MAX_COMP 239
+#define DARK_TIME 3
+#define LIGHT_TIME 3
+
+/* Maximum number of 10ms loops to wait for the stream to become ready */
+#define READY_TIMEOUT 100
+
+/* 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);
+static int find_over_exposure(int brightness);
+static void set_flicker(struct cam_params *params, volatile u32 *command_flags,
+ int on);
+
+
+/**********************************************************************
+ *
+ * Memory management
+ *
+ **********************************************************************/
+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) {
+ SetPageReserved(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) {
+ ClearPageReserved(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, "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, "sub_sample: %8s %8s %8s %8s\n",
+ cam->params.format.subSample == SUBSAMPLE_420 ?
+ "420" : "422", "420", "422", "422");
+ out += sprintf(out, "yuv_order: %8s %8s %8s %8s\n",
+ cam->params.format.yuvOrder == YUVORDER_YUYV ?
+ "YUYV" : "UYVY", "YUYV" , "UYVY", "YUYV");
+ out += sprintf(out, "ecp_timing: %8s %8s %8s %8s\n",
+ cam->params.ecpTiming ? "slow" : "normal", "slow",
+ "normal", "normal");
+
+ if (cam->params.colourBalance.balanceMode == 2) {
+ 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/2 to 127 */
+ tmp = 254;
+ else
+ tmp = 510;
+
+ 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 = MAX_EXP_102;
+ else
+ tmp = MAX_EXP;
+
+ 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, COMP_RED, 255, COMP_RED);
+ out += sprintf(out, "green1_comp: %8d %8d %8d %8d\n",
+ cam->params.exposure.green1Comp, COMP_GREEN1, 255,
+ COMP_GREEN1);
+ out += sprintf(out, "green2_comp: %8d %8d %8d %8d\n",
+ cam->params.exposure.green2Comp, COMP_GREEN2, 255,
+ COMP_GREEN2);
+ out += sprintf(out, "blue_comp: %8d %8d %8d %8d\n",
+ cam->params.exposure.blueComp, COMP_BLUE, 255, COMP_BLUE);
+
+ 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);
+ if(cam->params.flickerControl.allowableOverExposure < 0)
+ out += sprintf(out, "allowable_overexposure: %4dauto auto %8d auto\n",
+ -cam->params.flickerControl.allowableOverExposure,
+ 255);
+ else
+ out += sprintf(out, "allowable_overexposure: %8d auto %8d auto\n",
+ cam->params.flickerControl.allowableOverExposure,
+ 255);
+ 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", "on",
+ "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, 1, 30, 15);
+ out += sprintf(out, "target_quality: %8d %8d %8d %8d\n",
+ cam->params.compressionTarget.targetQ, 1, 64, 5);
+ out += sprintf(out, "y_threshold: %8d %8d %8d %8d\n",
+ cam->params.yuvThreshold.yThreshold, 0, 31, 6);
+ out += sprintf(out, "uv_threshold: %8d %8d %8d %8d\n",
+ cam->params.yuvThreshold.uvThreshold, 0, 31, 6);
+ 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 __user *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;
+ if(new_params.flickerControl.allowableOverExposure < 0)
+ new_params.flickerControl.allowableOverExposure =
+ -find_over_exposure(new_params.colourParams.brightness);
+ if(new_params.flickerControl.flickerMode != 0)
+ command_flags |= COMMAND_SETFLICKERCTRL;
+
+ } 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;
+ cam->exposure_status = EXPOSURE_NORMAL;
+ } 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("sub_sample")) {
+ if (!retval && MATCH("420"))
+ new_params.format.subSample = SUBSAMPLE_420;
+ else if (!retval && MATCH("422"))
+ new_params.format.subSample = SUBSAMPLE_422;
+ else
+ retval = -EINVAL;
+
+ command_flags |= COMMAND_SETFORMAT;
+ } else if (MATCH("yuv_order")) {
+ if (!retval && MATCH("YUYV"))
+ new_params.format.yuvOrder = YUVORDER_YUYV;
+ else if (!retval && MATCH("UYVY"))
+ new_params.format.yuvOrder = YUVORDER_UYVY;
+ else
+ retval = -EINVAL;
+
+ command_flags |= COMMAND_SETFORMAT;
+ } 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.balanceMode = 3;
+ else if (!retval && MATCH("auto"))
+ new_params.colourBalance.balanceMode = 2;
+ 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;
+ new_params.colourBalance.balanceMode = 1;
+ } 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;
+ new_params.colourBalance.balanceMode = 1;
+ } 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;
+ new_params.colourBalance.balanceMode = 1;
+ } 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;
+ if(new_params.flickerControl.flickerMode != 0)
+ command_flags |= COMMAND_SETFLICKERCTRL;
+ new_params.flickerControl.flickerMode = 0;
+ } 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;
+ break;
+ case 2:
+ new_params.exposure.gain = 1;
+ break;
+ case 4:
+ new_params.exposure.gain = 2;
+ break;
+ case 8:
+ new_params.exposure.gain = 3;
+ break;
+ default:
+ retval = -EINVAL;
+ break;
+ }
+ new_params.exposure.expMode = 1;
+ if(new_params.flickerControl.flickerMode != 0)
+ command_flags |= COMMAND_SETFLICKERCTRL;
+ new_params.flickerControl.flickerMode = 0;
+ 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/2;
+
+ if (!retval) {
+ if (val < 256) {
+ /* 1-02 firmware limits fineExp/2 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;
+ if(new_params.flickerControl.flickerMode != 0)
+ command_flags |= COMMAND_SETFLICKERCTRL;
+ 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 <= MAX_EXP) {
+ if (FIRMWARE_VERSION(1,2) &&
+ val > MAX_EXP_102)
+ val = MAX_EXP_102;
+ new_params.exposure.coarseExpLo =
+ val & 0xff;
+ new_params.exposure.coarseExpHi =
+ val >> 8;
+ new_params.exposure.expMode = 1;
+ command_flags |= COMMAND_SETEXPOSURE;
+ if(new_params.flickerControl.flickerMode != 0)
+ command_flags |= COMMAND_SETFLICKERCTRL;
+ 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 >= COMP_RED && val <= 255) {
+ new_params.exposure.redComp = val;
+ new_params.exposure.compMode = 1;
+ command_flags |= COMMAND_SETEXPOSURE;
+ } else
+ retval = -EINVAL;
+ }
+ } else if (MATCH("green1_comp")) {
+ if (!retval)
+ val = VALUE;
+
+ if (!retval) {
+ if (val >= COMP_GREEN1 && val <= 255) {
+ new_params.exposure.green1Comp = val;
+ new_params.exposure.compMode = 1;
+ command_flags |= COMMAND_SETEXPOSURE;
+ } else
+ retval = -EINVAL;
+ }
+ } else if (MATCH("green2_comp")) {
+ if (!retval)
+ val = VALUE;
+
+ if (!retval) {
+ if (val >= COMP_GREEN2 && val <= 255) {
+ new_params.exposure.green2Comp = val;
+ new_params.exposure.compMode = 1;
+ command_flags |= COMMAND_SETEXPOSURE;
+ } else
+ retval = -EINVAL;
+ }
+ } else if (MATCH("blue_comp")) {
+ if (!retval)
+ val = VALUE;
+
+ if (!retval) {
+ if (val >= COMP_BLUE && val <= 255) {
+ new_params.exposure.blueComp = val;
+ new_params.exposure.compMode = 1;
+ 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")) {
+ set_flicker(&new_params, &command_flags, 1);
+ } else if (!retval && MATCH("off")) {
+ set_flicker(&new_params, &command_flags, 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 && MATCH("auto")) {
+ new_params.flickerControl.allowableOverExposure =
+ -find_over_exposure(new_params.colourParams.brightness);
+ if(new_params.flickerControl.flickerMode != 0)
+ command_flags |= COMMAND_SETFLICKERCTRL;
+ } else {
+ if (!retval)
+ val = VALUE;
+
+ if (!retval) {
+ if (val <= 0xff) {
+ new_params.flickerControl.
+ allowableOverExposure = val;
+ if(new_params.flickerControl.flickerMode != 0)
+ 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 if (!retval && MATCH("on"))
+ new_params.compression.decimation = 1;
+ 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) {
+ if(val > 0 && val <= 30)
+ new_params.compressionTarget.targetFR = val;
+ else
+ retval = -EINVAL;
+ }
+ command_flags |= COMMAND_SETCOMPRESSIONTARGET;
+ } else if (MATCH("target_quality")) {
+ if (!retval)
+ val = VALUE;
+
+ if (!retval) {
+ if(val > 0 && val <= 64)
+ new_params.compressionTarget.targetQ = val;
+ else
+ retval = -EINVAL;
+ }
+ 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;
+ }
+ if((command_flags & COMMAND_SETEXPOSURE) &&
+ new_params.exposure.expMode == 2)
+ cam->exposure_status = EXPOSURE_NORMAL;
+
+ 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 3736 bytes for the standard webcam;
+ the extra features of the QX3 microscope add 189 bytes.
+ (we have not yet probed the camera to see which type it is).
+ */
+ ent->size = 3736 + 189;
+ 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, NULL);
+
+ if (cpia_proc_root)
+ cpia_proc_root->owner = THIS_MODULE;
+ else
+ LOG("Unable to initialise /proc/cpia\n");
+}
+
+static void __exit proc_cpia_destroy(void)
+{
+ remove_proc_entry("cpia", NULL);
+}
+#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)
+{
+ if ((palette == VIDEO_PALETTE_YUV422 && depth == 16) ||
+ (palette == VIDEO_PALETTE_YUYV && depth == 16))
+ return 1;
+
+ if (colorspace_conv)
+ 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_UYVY && depth == 16);
+
+ return 0;
+}
+
+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.rowStart=0;
+ 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.rowStart=6;
+ 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.rowStart=9;
+ 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.rowStart=12;
+ 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.rowStart=15;
+ 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.rowStart=18;
+ 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.rowStart=0;
+ 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.rowStart=3;
+ 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.rowStart=6;
+ 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.rowStart=9;
+ 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.rowStart=12;
+ 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.rowStart=6;
+ cam->params.streamStartLine = 60;
+ break;
+ default:
+ LOG("bad videosize value: %d\n", cam->video_size);
+ return;
+ }
+
+ if(cam->vc.width == 0)
+ cam->vc.width = cam->vw.width;
+ if(cam->vc.height == 0)
+ cam->vc.height = cam->vw.height;
+
+ cam->params.roi.colStart += cam->vc.x >> 3;
+ cam->params.roi.colEnd = cam->params.roi.colStart +
+ (cam->vc.width >> 3);
+ cam->params.roi.rowStart += cam->vc.y >> 2;
+ cam->params.roi.rowEnd = cam->params.roi.rowStart +
+ (cam->vc.height >> 2);
+
+ 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 = NULL;
+ 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];
+ 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 convert420(unsigned char *yuv, unsigned char *rgb, int out_fmt,
+ int linesize, int mmap_kludge)
+{
+ int y, u, v, r, g, b, y1;
+
+ /* Odd lines use the same u and v as the previous line.
+ * Because of compression, it is necessary to get this
+ * information from the decoded image. */
+ switch(out_fmt) {
+ case VIDEO_PALETTE_RGB555:
+ y = (*yuv++ - 16) * 76310;
+ y1 = (*yuv - 16) * 76310;
+ r = ((*(rgb+1-linesize)) & 0x7c) << 1;
+ g = ((*(rgb-linesize)) & 0xe0) >> 4 |
+ ((*(rgb+1-linesize)) & 0x03) << 6;
+ b = ((*(rgb-linesize)) & 0x1f) << 3;
+ u = (-53294 * r - 104635 * g + 157929 * b) / 5756495;
+ v = (157968 * r - 132278 * g - 25690 * b) / 5366159;
+ r = 104635 * v;
+ g = -25690 * u - 53294 * v;
+ b = 132278 * u;
+ *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:
+ y = (*yuv++ - 16) * 76310;
+ y1 = (*yuv - 16) * 76310;
+ r = (*(rgb+1-linesize)) & 0xf8;
+ g = ((*(rgb-linesize)) & 0xe0) >> 3 |
+ ((*(rgb+1-linesize)) & 0x07) << 5;
+ b = ((*(rgb-linesize)) & 0x1f) << 3;
+ u = (-53294 * r - 104635 * g + 157929 * b) / 5756495;
+ v = (157968 * r - 132278 * g - 25690 * b) / 5366159;
+ r = 104635 * v;
+ g = -25690 * u - 53294 * v;
+ b = 132278 * u;
+ *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;
+ break;
+ case VIDEO_PALETTE_RGB24:
+ case VIDEO_PALETTE_RGB32:
+ y = (*yuv++ - 16) * 76310;
+ y1 = (*yuv - 16) * 76310;
+ if (mmap_kludge) {
+ r = *(rgb+2-linesize);
+ g = *(rgb+1-linesize);
+ b = *(rgb-linesize);
+ } else {
+ r = *(rgb-linesize);
+ g = *(rgb+1-linesize);
+ b = *(rgb+2-linesize);
+ }
+ u = (-53294 * r - 104635 * g + 157929 * b) / 5756495;
+ v = (157968 * r - 132278 * g - 25690 * b) / 5366159;
+ r = 104635 * v;
+ g = -25690 * u + -53294 * v;
+ b = 132278 * u;
+ if (mmap_kludge) {
+ *rgb++ = LIMIT(b+y);
+ *rgb++ = LIMIT(g+y);
+ *rgb++ = LIMIT(r+y);
+ if(out_fmt == VIDEO_PALETTE_RGB32)
+ 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);
+ if(out_fmt == VIDEO_PALETTE_RGB32)
+ rgb++;
+ *rgb++ = LIMIT(r+y1);
+ *rgb++ = LIMIT(g+y1);
+ *rgb = LIMIT(b+y1);
+ }
+ if(out_fmt == VIDEO_PALETTE_RGB32)
+ return 8;
+ return 6;
+ case VIDEO_PALETTE_YUV422:
+ case VIDEO_PALETTE_YUYV:
+ y = *yuv++;
+ u = *(rgb+1-linesize);
+ y1 = *yuv;
+ v = *(rgb+3-linesize);
+ *rgb++ = y;
+ *rgb++ = u;
+ *rgb++ = y1;
+ *rgb = v;
+ return 4;
+ case VIDEO_PALETTE_UYVY:
+ u = *(rgb-linesize);
+ y = *yuv++;
+ v = *(rgb+2-linesize);
+ y1 = *yuv;
+ *rgb++ = u;
+ *rgb++ = y;
+ *rgb++ = v;
+ *rgb = y1;
+ return 4;
+ case VIDEO_PALETTE_GREY:
+ *rgb++ = *yuv++;
+ *rgb = *yuv;
+ return 2;
+ default:
+ DBG("Empty: %d\n", out_fmt);
+ return 0;
+ }
+}
+
+
+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, decimation, even_line, origsize, out_fmt;
+ int rows, cols, linesize, subsample_422;
+
+ /* 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_420 && ibuf[17] != SUBSAMPLE_422) {
+ LOG("illegal subtype %d\n",ibuf[17]);
+ up(&cam->param_lock);
+ return -1;
+ }
+ subsample_422 = ibuf[17] == SUBSAMPLE_422;
+
+ 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 ((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;
+ }
+ cols = 8*(ibuf[25] - ibuf[24]);
+ rows = 4*(ibuf[27] - ibuf[26]);
+
+
+ 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 && ibuf[29] != DECIMATION_ENAB) {
+ LOG("illegal decimation %d\n",ibuf[29]);
+ up(&cam->param_lock);
+ return -1;
+ }
+ decimation = (ibuf[29] == DECIMATION_ENAB);
+
+ 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);
+
+ linesize = skipcount(cols, out_fmt);
+ ibuf += FRAME_HEADER_SIZE;
+ size -= FRAME_HEADER_SIZE;
+ ll = ibuf[0] | (ibuf[1] << 8);
+ ibuf += 2;
+ even_line = 1;
+
+ while (size > 0) {
+ size -= (ll+2);
+ if (size < 0) {
+ LOG("Insufficient data in buffer\n");
+ return -1;
+ }
+
+ while (ll > 1) {
+ if (!compressed || (compressed && !(*ibuf & 1))) {
+ if(subsample_422 || even_line) {
+ obuf += yuvconvert(ibuf, obuf, out_fmt,
+ in_uyvy, cam->mmap_kludge);
+ ibuf += 4;
+ ll -= 4;
+ } else {
+ /* SUBSAMPLE_420 on an odd line */
+ obuf += convert420(ibuf, obuf,
+ out_fmt, linesize,
+ cam->mmap_kludge);
+ ibuf += 2;
+ ll -= 2;
+ }
+ } else {
+ /*skip compressed interval from previous frame*/
+ obuf += skipcount(*ibuf >> 1, out_fmt);
+ if (obuf > end_obuf) {
+ LOG("Insufficient buffer size\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(decimation) {
+ /* skip the odd lines for now */
+ obuf += linesize;
+ }
+
+ if (size > 1) {
+ ll = ibuf[0] | (ibuf[1] << 8);
+ ibuf += 2; /* skip over line length */
+ }
+ if(!decimation)
+ even_line = !even_line;
+ } else {
+ LOG("line length was not 1 but %d after %d/%d bytes\n",
+ ll, origsize-size, origsize);
+ return -1;
+ }
+ }
+
+ if(decimation) {
+ /* interpolate odd rows */
+ int i, j;
+ u8 *prev, *next;
+ prev = cam->decompressed_frame.data;
+ obuf = prev+linesize;
+ next = obuf+linesize;
+ for(i=1; i<rows-1; i+=2) {
+ for(j=0; j<linesize; ++j) {
+ *obuf++ = ((int)*prev++ + *next++) / 2;
+ }
+ prev += linesize;
+ obuf += linesize;
+ next += linesize;
+ }
+ /* last row is odd, just copy previous row */
+ memcpy(obuf, prev, linesize);
+ }
+
+ 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);
+}
+
+
+/* find_over_exposure
+ * Finds a suitable value of OverExposure for use with SetFlickerCtrl
+ * Some calculation is required because this value changes with the brightness
+ * set with SetColourParameters
+ *
+ * Parameters: Brightness - last brightness value set with SetColourParameters
+ *
+ * Returns: OverExposure value to use with SetFlickerCtrl
+ */
+#define FLICKER_MAX_EXPOSURE 250
+#define FLICKER_ALLOWABLE_OVER_EXPOSURE 146
+#define FLICKER_BRIGHTNESS_CONSTANT 59
+static int find_over_exposure(int brightness)
+{
+ int MaxAllowableOverExposure, OverExposure;
+
+ MaxAllowableOverExposure = FLICKER_MAX_EXPOSURE - brightness -
+ FLICKER_BRIGHTNESS_CONSTANT;
+
+ if (MaxAllowableOverExposure < FLICKER_ALLOWABLE_OVER_EXPOSURE) {
+ OverExposure = MaxAllowableOverExposure;
+ } else {
+ OverExposure = FLICKER_ALLOWABLE_OVER_EXPOSURE;
+ }
+
+ return OverExposure;
+}
+#undef FLICKER_MAX_EXPOSURE
+#undef FLICKER_ALLOWABLE_OVER_EXPOSURE
+#undef FLICKER_BRIGHTNESS_CONSTANT
+
+/* 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_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_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_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_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_SETEXPOSURE) {
+ do_command_extended(cam, CPIA_COMMAND_SetExposure,
+ cam->params.exposure.gainMode,
+ 1,
+ 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->params.exposure.expMode != 1) {
+ do_command_extended(cam, CPIA_COMMAND_SetExposure,
+ 0,
+ cam->params.exposure.expMode,
+ 0, 0,
+ cam->params.exposure.gain,
+ cam->params.exposure.fineExp,
+ cam->params.exposure.coarseExpLo,
+ cam->params.exposure.coarseExpHi,
+ 0, 0, 0, 0);
+ }
+ }
+
+ if (cam->cmd_queue & COMMAND_SETCOLOURBALANCE) {
+ if (cam->params.colourBalance.balanceMode == 1) {
+ 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->params.colourBalance.balanceMode == 2) {
+ do_command(cam, CPIA_COMMAND_SetColourBalance,
+ 2, 0, 0, 0);
+ }
+ if (cam->params.colourBalance.balanceMode == 3) {
+ do_command(cam, CPIA_COMMAND_SetColourBalance,
+ 3, 0, 0, 0);
+ }
+ }
+
+ 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_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_SETCOMPRESSION)
+ do_command(cam, CPIA_COMMAND_SetCompression,
+ cam->params.compression.mode,
+ cam->params.compression.decimation, 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_SETFLICKERCTRL)
+ do_command(cam, CPIA_COMMAND_SetFlickerCtrl,
+ cam->params.flickerControl.flickerMode,
+ cam->params.flickerControl.coarseJump,
+ abs(cam->params.flickerControl.allowableOverExposure),
+ 0);
+
+ if (cam->cmd_queue & COMMAND_SETECPTIMING)
+ do_command(cam, CPIA_COMMAND_SetECPTiming,
+ cam->params.ecpTiming, 0, 0, 0);
+
+ 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);
+ }
+
+ cam->cmd_queue = COMMAND_NONE;
+ up(&cam->param_lock);
+ return;
+}
+
+
+
+static void set_flicker(struct cam_params *params, volatile u32 *command_flags,
+ int on)
+{
+ /* Everything in here is from the Windows driver */
+#define FIRMWARE_VERSION(x,y) (params->version.firmwareVersion == (x) && \
+ params->version.firmwareRevision == (y))
+/* define for compgain calculation */
+#if 0
+#define COMPGAIN(base, curexp, newexp) \
+ (u8) ((((float) base - 128.0) * ((float) curexp / (float) newexp)) + 128.5)
+#define EXP_FROM_COMP(basecomp, curcomp, curexp) \
+ (u16)((float)curexp * (float)(u8)(curcomp + 128) / (float)(u8)(basecomp - 128))
+#else
+ /* equivalent functions without floating point math */
+#define COMPGAIN(base, curexp, newexp) \
+ (u8)(128 + (((u32)(2*(base-128)*curexp + newexp)) / (2* newexp)) )
+#define EXP_FROM_COMP(basecomp, curcomp, curexp) \
+ (u16)(((u32)(curexp * (u8)(curcomp + 128)) / (u8)(basecomp - 128)))
+#endif
+
+
+ int currentexp = params->exposure.coarseExpLo +
+ params->exposure.coarseExpHi*256;
+ int startexp;
+ if (on) {
+ int cj = params->flickerControl.coarseJump;
+ params->flickerControl.flickerMode = 1;
+ params->flickerControl.disabled = 0;
+ if(params->exposure.expMode != 2)
+ *command_flags |= COMMAND_SETEXPOSURE;
+ params->exposure.expMode = 2;
+ currentexp = currentexp << params->exposure.gain;
+ params->exposure.gain = 0;
+ /* round down current exposure to nearest value */
+ startexp = (currentexp + ROUND_UP_EXP_FOR_FLICKER) / cj;
+ if(startexp < 1)
+ startexp = 1;
+ startexp = (startexp * cj) - 1;
+ if(FIRMWARE_VERSION(1,2))
+ while(startexp > MAX_EXP_102)
+ startexp -= cj;
+ else
+ while(startexp > MAX_EXP)
+ startexp -= cj;
+ params->exposure.coarseExpLo = startexp & 0xff;
+ params->exposure.coarseExpHi = startexp >> 8;
+ if (currentexp > startexp) {
+ if (currentexp > (2 * startexp))
+ currentexp = 2 * startexp;
+ params->exposure.redComp = COMPGAIN (COMP_RED, currentexp, startexp);
+ params->exposure.green1Comp = COMPGAIN (COMP_GREEN1, currentexp, startexp);
+ params->exposure.green2Comp = COMPGAIN (COMP_GREEN2, currentexp, startexp);
+ params->exposure.blueComp = COMPGAIN (COMP_BLUE, currentexp, startexp);
+ } else {
+ params->exposure.redComp = COMP_RED;
+ params->exposure.green1Comp = COMP_GREEN1;
+ params->exposure.green2Comp = COMP_GREEN2;
+ params->exposure.blueComp = COMP_BLUE;
+ }
+ if(FIRMWARE_VERSION(1,2))
+ params->exposure.compMode = 0;
+ else
+ params->exposure.compMode = 1;
+
+ params->apcor.gain1 = 0x18;
+ params->apcor.gain2 = 0x18;
+ params->apcor.gain4 = 0x16;
+ params->apcor.gain8 = 0x14;
+ *command_flags |= COMMAND_SETAPCOR;
+ } else {
+ params->flickerControl.flickerMode = 0;
+ params->flickerControl.disabled = 1;
+ /* Coarse = average of equivalent coarse for each comp channel */
+ startexp = EXP_FROM_COMP(COMP_RED, params->exposure.redComp, currentexp);
+ startexp += EXP_FROM_COMP(COMP_GREEN1, params->exposure.green1Comp, currentexp);
+ startexp += EXP_FROM_COMP(COMP_GREEN2, params->exposure.green2Comp, currentexp);
+ startexp += EXP_FROM_COMP(COMP_BLUE, params->exposure.blueComp, currentexp);
+ startexp = startexp >> 2;
+ while(startexp > MAX_EXP &&
+ params->exposure.gain < params->exposure.gainMode-1) {
+ startexp = startexp >> 1;
+ ++params->exposure.gain;
+ }
+ if(FIRMWARE_VERSION(1,2) && startexp > MAX_EXP_102)
+ startexp = MAX_EXP_102;
+ if(startexp > MAX_EXP)
+ startexp = MAX_EXP;
+ params->exposure.coarseExpLo = startexp&0xff;
+ params->exposure.coarseExpHi = startexp >> 8;
+ params->exposure.redComp = COMP_RED;
+ params->exposure.green1Comp = COMP_GREEN1;
+ params->exposure.green2Comp = COMP_GREEN2;
+ params->exposure.blueComp = COMP_BLUE;
+ params->exposure.compMode = 1;
+ *command_flags |= COMMAND_SETEXPOSURE;
+ params->apcor.gain1 = 0x18;
+ params->apcor.gain2 = 0x16;
+ params->apcor.gain4 = 0x24;
+ params->apcor.gain8 = 0x34;
+ *command_flags |= COMMAND_SETAPCOR;
+ }
+ params->vlOffset.gain1 = 20;
+ params->vlOffset.gain2 = 24;
+ params->vlOffset.gain4 = 26;
+ params->vlOffset.gain8 = 26;
+ *command_flags |= COMMAND_SETVLOFFSET;
+#undef FIRMWARE_VERSION
+#undef EXP_FROM_COMP
+#undef COMPGAIN
+}
+
+#define FIRMWARE_VERSION(x,y) (cam->params.version.firmwareVersion == (x) && \
+ cam->params.version.firmwareRevision == (y))
+/* monitor the exposure and adjust the sensor frame rate if needed */
+static void monitor_exposure(struct cam_data *cam)
+{
+ u8 exp_acc, bcomp, gain, coarseL, cmd[8], data[8];
+ int retval, light_exp, dark_exp, very_dark_exp;
+ int old_exposure, new_exposure, framerate;
+
+ /* get necessary stats and register settings from camera */
+ /* do_command can't handle this, so do it ourselves */
+ cmd[0] = CPIA_COMMAND_ReadVPRegs>>8;
+ cmd[1] = CPIA_COMMAND_ReadVPRegs&0xff;
+ cmd[2] = 30;
+ cmd[3] = 4;
+ cmd[4] = 9;
+ cmd[5] = 8;
+ cmd[6] = 8;
+ cmd[7] = 0;
+ retval = cam->ops->transferCmd(cam->lowlevel_data, cmd, data);
+ if (retval) {
+ LOG("ReadVPRegs(30,4,9,8) - failed, retval=%d\n",
+ retval);
+ return;
+ }
+ exp_acc = data[0];
+ bcomp = data[1];
+ gain = data[2];
+ coarseL = data[3];
+
+ down(&cam->param_lock);
+ light_exp = cam->params.colourParams.brightness +
+ TC - 50 + EXP_ACC_LIGHT;
+ if(light_exp > 255)
+ light_exp = 255;
+ dark_exp = cam->params.colourParams.brightness +
+ TC - 50 - EXP_ACC_DARK;
+ if(dark_exp < 0)
+ dark_exp = 0;
+ very_dark_exp = dark_exp/2;
+
+ old_exposure = cam->params.exposure.coarseExpHi * 256 +
+ cam->params.exposure.coarseExpLo;
+
+ if(!cam->params.flickerControl.disabled) {
+ /* Flicker control on */
+ int max_comp = FIRMWARE_VERSION(1,2) ? MAX_COMP : HIGH_COMP_102;
+ bcomp += 128; /* decode */
+ if(bcomp >= max_comp && exp_acc < dark_exp) {
+ /* dark */
+ if(exp_acc < very_dark_exp) {
+ /* very dark */
+ if(cam->exposure_status == EXPOSURE_VERY_DARK)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_VERY_DARK;
+ cam->exposure_count = 1;
+ }
+ } else {
+ /* just dark */
+ if(cam->exposure_status == EXPOSURE_DARK)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_DARK;
+ cam->exposure_count = 1;
+ }
+ }
+ } else if(old_exposure <= LOW_EXP || exp_acc > light_exp) {
+ /* light */
+ if(old_exposure <= VERY_LOW_EXP) {
+ /* very light */
+ if(cam->exposure_status == EXPOSURE_VERY_LIGHT)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_VERY_LIGHT;
+ cam->exposure_count = 1;
+ }
+ } else {
+ /* just light */
+ if(cam->exposure_status == EXPOSURE_LIGHT)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_LIGHT;
+ cam->exposure_count = 1;
+ }
+ }
+ } else {
+ /* not dark or light */
+ cam->exposure_status = EXPOSURE_NORMAL;
+ }
+ } else {
+ /* Flicker control off */
+ if(old_exposure >= MAX_EXP && exp_acc < dark_exp) {
+ /* dark */
+ if(exp_acc < very_dark_exp) {
+ /* very dark */
+ if(cam->exposure_status == EXPOSURE_VERY_DARK)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_VERY_DARK;
+ cam->exposure_count = 1;
+ }
+ } else {
+ /* just dark */
+ if(cam->exposure_status == EXPOSURE_DARK)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_DARK;
+ cam->exposure_count = 1;
+ }
+ }
+ } else if(old_exposure <= LOW_EXP || exp_acc > light_exp) {
+ /* light */
+ if(old_exposure <= VERY_LOW_EXP) {
+ /* very light */
+ if(cam->exposure_status == EXPOSURE_VERY_LIGHT)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_VERY_LIGHT;
+ cam->exposure_count = 1;
+ }
+ } else {
+ /* just light */
+ if(cam->exposure_status == EXPOSURE_LIGHT)
+ ++cam->exposure_count;
+ else {
+ cam->exposure_status = EXPOSURE_LIGHT;
+ cam->exposure_count = 1;
+ }
+ }
+ } else {
+ /* not dark or light */
+ cam->exposure_status = EXPOSURE_NORMAL;
+ }
+ }
+
+ framerate = cam->fps;
+ if(framerate > 30 || framerate < 1)
+ framerate = 1;
+
+ if(!cam->params.flickerControl.disabled) {
+ /* Flicker control on */
+ if((cam->exposure_status == EXPOSURE_VERY_DARK ||
+ cam->exposure_status == EXPOSURE_DARK) &&
+ cam->exposure_count >= DARK_TIME*framerate &&
+ cam->params.sensorFps.divisor < 3) {
+
+ /* dark for too long */
+ ++cam->params.sensorFps.divisor;
+ cam->cmd_queue |= COMMAND_SETSENSORFPS;
+
+ cam->params.flickerControl.coarseJump =
+ flicker_jumps[cam->mainsFreq]
+ [cam->params.sensorFps.baserate]
+ [cam->params.sensorFps.divisor];
+ cam->cmd_queue |= COMMAND_SETFLICKERCTRL;
+
+ new_exposure = cam->params.flickerControl.coarseJump-1;
+ while(new_exposure < old_exposure/2)
+ new_exposure += cam->params.flickerControl.coarseJump;
+ cam->params.exposure.coarseExpLo = new_exposure & 0xff;
+ cam->params.exposure.coarseExpHi = new_exposure >> 8;
+ cam->cmd_queue |= COMMAND_SETEXPOSURE;
+ cam->exposure_status = EXPOSURE_NORMAL;
+ LOG("Automatically decreasing sensor_fps\n");
+
+ } else if((cam->exposure_status == EXPOSURE_VERY_LIGHT ||
+ cam->exposure_status == EXPOSURE_LIGHT) &&
+ cam->exposure_count >= LIGHT_TIME*framerate &&
+ cam->params.sensorFps.divisor > 0) {
+
+ /* light for too long */
+ int max_exp = FIRMWARE_VERSION(1,2) ? MAX_EXP_102 : MAX_EXP ;
+
+ --cam->params.sensorFps.divisor;
+ cam->cmd_queue |= COMMAND_SETSENSORFPS;
+
+ cam->params.flickerControl.coarseJump =
+ flicker_jumps[cam->mainsFreq]
+ [cam->params.sensorFps.baserate]
+ [cam->params.sensorFps.divisor];
+ cam->cmd_queue |= COMMAND_SETFLICKERCTRL;
+
+ new_exposure = cam->params.flickerControl.coarseJump-1;
+ while(new_exposure < 2*old_exposure &&
+ new_exposure+
+ cam->params.flickerControl.coarseJump < max_exp)
+ new_exposure += cam->params.flickerControl.coarseJump;
+ cam->params.exposure.coarseExpLo = new_exposure & 0xff;
+ cam->params.exposure.coarseExpHi = new_exposure >> 8;
+ cam->cmd_queue |= COMMAND_SETEXPOSURE;
+ cam->exposure_status = EXPOSURE_NORMAL;
+ LOG("Automatically increasing sensor_fps\n");
+ }
+ } else {
+ /* Flicker control off */
+ if((cam->exposure_status == EXPOSURE_VERY_DARK ||
+ cam->exposure_status == EXPOSURE_DARK) &&
+ cam->exposure_count >= DARK_TIME*framerate &&
+ cam->params.sensorFps.divisor < 3) {
+
+ /* dark for too long */
+ ++cam->params.sensorFps.divisor;
+ cam->cmd_queue |= COMMAND_SETSENSORFPS;
+
+ if(cam->params.exposure.gain > 0) {
+ --cam->params.exposure.gain;
+ cam->cmd_queue |= COMMAND_SETEXPOSURE;
+ }
+ cam->exposure_status = EXPOSURE_NORMAL;
+ LOG("Automatically decreasing sensor_fps\n");
+
+ } else if((cam->exposure_status == EXPOSURE_VERY_LIGHT ||
+ cam->exposure_status == EXPOSURE_LIGHT) &&
+ cam->exposure_count >= LIGHT_TIME*framerate &&
+ cam->params.sensorFps.divisor > 0) {
+
+ /* light for too long */
+ --cam->params.sensorFps.divisor;
+ cam->cmd_queue |= COMMAND_SETSENSORFPS;
+
+ if(cam->params.exposure.gain <
+ cam->params.exposure.gainMode-1) {
+ ++cam->params.exposure.gain;
+ cam->cmd_queue |= COMMAND_SETEXPOSURE;
+ }
+ cam->exposure_status = EXPOSURE_NORMAL;
+ LOG("Automatically increasing sensor_fps\n");
+ }
+ }
+ up(&cam->param_lock);
+}
+
+/*-----------------------------------------------------------------*/
+/* if flicker is switched off, this function switches it back on.It checks,
+ however, that conditions are suitable before restarting it.
+ This should only be called for firmware version 1.2.
+
+ It also adjust the colour balance when an exposure step is detected - as
+ long as flicker is running
+*/
+static void restart_flicker(struct cam_data *cam)
+{
+ int cam_exposure, old_exp;
+ if(!FIRMWARE_VERSION(1,2))
+ return;
+ down(&cam->param_lock);
+ if(cam->params.flickerControl.flickerMode == 0 ||
+ cam->raw_image[39] == 0) {
+ up(&cam->param_lock);
+ return;
+ }
+ cam_exposure = cam->raw_image[39]*2;
+ old_exp = cam->params.exposure.coarseExpLo +
+ cam->params.exposure.coarseExpHi*256;
+ /*
+ see how far away camera exposure is from a valid
+ flicker exposure value
+ */
+ cam_exposure %= cam->params.flickerControl.coarseJump;
+ if(!cam->params.flickerControl.disabled &&
+ cam_exposure <= cam->params.flickerControl.coarseJump - 3) {
+ /* Flicker control auto-disabled */
+ cam->params.flickerControl.disabled = 1;
+ }
+
+ if(cam->params.flickerControl.disabled &&
+ cam->params.flickerControl.flickerMode &&
+ old_exp > cam->params.flickerControl.coarseJump +
+ ROUND_UP_EXP_FOR_FLICKER) {
+ /* exposure is now high enough to switch
+ flicker control back on */
+ set_flicker(&cam->params, &cam->cmd_queue, 1);
+ if((cam->cmd_queue & COMMAND_SETEXPOSURE) &&
+ cam->params.exposure.expMode == 2)
+ cam->exposure_status = EXPOSURE_NORMAL;
+
+ }
+ up(&cam->param_lock);
+}
+#undef FIRMWARE_VERSION
+
+static int clear_stall(struct cam_data *cam)
+{
+ /* FIXME: Does this actually work? */
+ LOG("Clearing stall\n");
+
+ cam->ops->streamRead(cam->lowlevel_data, cam->raw_image, 0);
+ do_command(cam, CPIA_COMMAND_GetCameraStatus,0,0,0,0);
+ return cam->params.status.streamState != STREAM_PAUSED;
+}
+
+/* kernel thread function to read image from camera */
+static int 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);
+ /* Trial & error - Discarding a frame prevents the
+ first frame from having an error in the data. */
+ do_command(cam, CPIA_COMMAND_DiscardFrame, 0, 0, 0, 0);
+ }
+
+ /* init camera upload */
+ 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 */
+ int count = 0;
+ do_command(cam, CPIA_COMMAND_GetCameraStatus,0,0,0,0);
+ while (cam->params.status.streamState != STREAM_READY) {
+ if(++count > READY_TIMEOUT)
+ break;
+ if(cam->params.status.streamState ==
+ STREAM_PAUSED) {
+ /* Bad news */
+ if(!clear_stall(cam))
+ return -EIO;
+ }
+
+ cond_resched();
+
+ /* sleep for 10 ms, hopefully ;) */
+ msleep_interruptible(10);
+ if (signal_pending(current))
+ return -EINTR;
+
+ do_command(cam, CPIA_COMMAND_GetCameraStatus,
+ 0, 0, 0, 0);
+ }
+ if(cam->params.status.streamState != STREAM_READY) {
+ continue;
+ }
+ }
+
+ cond_resched();
+
+ /* grab image from camera */
+ 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 */
+
+ /* Switch flicker control back on if it got turned off */
+ restart_flicker(cam);
+
+ /* If AEC is enabled, monitor the exposure and
+ adjust the sensor frame rate if needed */
+ if(cam->params.exposure.expMode == 2)
+ monitor_exposure(cam);
+
+ /* 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
+ */
+
+ cond_resched();
+
+ cam->image_size = parse_picture(cam, image_size);
+ if (cam->image_size <= 0) {
+ DBG("parse_picture failed %d\n", cam->image_size);
+ if(cam->params.compression.mode !=
+ CPIA_COMPRESSION_NONE) {
+ /* Compression may not work right if we
+ had a bad frame, get the next one
+ uncompressed. */
+ cam->first_frame = 1;
+ do_command(cam, CPIA_COMMAND_SetGrabMode,
+ CPIA_GRAB_SINGLE, 0, 0, 0);
+ /* FIXME: Trial & error - need up to 70ms for
+ the grab mode change to complete ? */
+ msleep_interruptible(70);
+ if (signal_pending(current))
+ return -EINTR;
+ }
+ } 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 (cam->first_frame) {
+ cam->first_frame = 0;
+ do_command(cam, CPIA_COMMAND_SetCompression,
+ cam->params.compression.mode,
+ cam->params.compression.decimation, 0, 0);
+
+ /* Switch from single-grab to continuous grab */
+ do_command(cam, CPIA_COMMAND_SetGrabMode,
+ CPIA_GRAB_CONTINUOUS, 0, 0, 0);
+ }
+ return 0;
+ }
+ return -EIO;
+}
+
+static int capture_frame(struct cam_data *cam, struct video_mmap *vm)
+{
+ if (!cam->frame_buf) {
+ /* we do lazy allocation */
+ int err;
+ if ((err = allocate_frame_buf(cam)))
+ return err;
+ }
+
+ cam->curframe = vm->frame;
+ cam->frame[cam->curframe].state = FRAME_READY;
+ return fetch_frame(cam);
+}
+
+static int goto_high_power(struct cam_data *cam)
+{
+ if (do_command(cam, CPIA_COMMAND_GotoHiPower, 0, 0, 0, 0))
+ return -EIO;
+ msleep_interruptible(40); /* windows driver does it too */
+ if(signal_pending(current))
+ return -EINTR;
+ if (do_command(cam, CPIA_COMMAND_GetCameraStatus, 0, 0, 0, 0))
+ return -EIO;
+ if (cam->params.status.systemState == HI_POWER_STATE) {
+ DBG("camera now in HIGH power state\n");
+ return 0;
+ }
+ printstatus(cam);
+ return -EIO;
+}
+
+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)
+{
+ if(!(cam->cmd_queue & COMMAND_SETCOLOURBALANCE))
+ do_command(cam, CPIA_COMMAND_GetColourBalance, 0, 0, 0, 0);
+ if(!(cam->cmd_queue & COMMAND_SETEXPOSURE))
+ 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 int set_camera_state(struct cam_data *cam)
+{
+ cam->cmd_queue = COMMAND_SETCOMPRESSION |
+ COMMAND_SETCOMPRESSIONTARGET |
+ COMMAND_SETCOLOURPARAMS |
+ COMMAND_SETFORMAT |
+ COMMAND_SETYUVTHRESH |
+ COMMAND_SETECPTIMING |
+ COMMAND_SETCOMPRESSIONPARAMS |
+ COMMAND_SETEXPOSURE |
+ COMMAND_SETCOLOURBALANCE |
+ COMMAND_SETSENSORFPS |
+ COMMAND_SETAPCOR |
+ COMMAND_SETFLICKERCTRL |
+ COMMAND_SETVLOFFSET;
+
+ do_command(cam, CPIA_COMMAND_SetGrabMode, CPIA_GRAB_SINGLE,0,0,0);
+ dispatch_commands(cam);
+
+ /* Wait 6 frames for the sensor to get all settings and
+ AEC/ACB to settle */
+ msleep_interruptible(6*(cam->params.sensorFps.baserate ? 33 : 40) *
+ (1 << cam->params.sensorFps.divisor) + 10);
+
+ if(signal_pending(current))
+ return -EINTR;
+
+ save_camera_state(cam);
+
+ return 0;
+}
+
+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)
+{
+ int err;
+ /* 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 */
+ err = goto_high_power(cam);
+ if(err)
+ return err;
+ do_command(cam, CPIA_COMMAND_DiscardFrame, 0, 0, 0, 0);
+ if (goto_low_power(cam))
+ return -ENODEV;
+ }
+
+ /* procedure described in developer's guide p3-28 */
+
+ /* Check the firmware version. */
+ cam->params.version.firmwareVersion = 0;
+ get_version_information(cam);
+ if (cam->params.version.firmwareVersion != 1)
+ return -ENODEV;
+
+ /* A bug in firmware 1-02 limits gainMode to 2 */
+ if(cam->params.version.firmwareRevision <= 2 &&
+ cam->params.exposure.gainMode > 2) {
+ cam->params.exposure.gainMode = 2;
+ }
+
+ /* 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 */
+ err = goto_high_power(cam);
+ if (err)
+ return err;
+
+ /* 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 */
+ return set_camera_state(cam);
+}
+
+static void put_cam(struct cpia_camera_ops* ops)
+{
+ if (ops->owner)
+ module_put(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_module_get(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;
+ }
+
+ err = -EINTR;
+ if(signal_pending(current))
+ 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 ssize_t cpia_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct video_device *dev = file->private_data;
+ struct cam_data *cam = dev->priv;
+ int err;
+
+ /* 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;
+ if((err = fetch_frame(cam)) != 0) {
+ DBG("ERROR from fetch_frame: %d\n", err);
+ up(&cam->busy_lock);
+ return err;
+ }
+ 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 | VID_TYPE_SUBCAPTURE;
+ 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;
+ }
+
+ /* Adjust flicker control if necessary */
+ if(cam->params.flickerControl.allowableOverExposure < 0)
+ cam->params.flickerControl.allowableOverExposure =
+ -find_over_exposure(cam->params.colourParams.brightness);
+ if(cam->params.flickerControl.flickerMode != 0)
+ cam->cmd_queue |= COMMAND_SETFLICKERCTRL;
+
+
+ /* 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;
+
+ /* video size is changing, reset the subcapture area */
+ memset(&cam->vc, 0, sizeof(cam->vc));
+
+ 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;
+
+ /* video size is changing, reset the subcapture area */
+ memset(&cam->vc, 0, sizeof(cam->vc));
+
+ 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;
+ }
+
+ case VIDIOCGCAPTURE:
+ {
+ struct video_capture *vc = arg;
+
+ DBG("VIDIOCGCAPTURE\n");
+
+ *vc = cam->vc;
+
+ break;
+ }
+
+ case VIDIOCSCAPTURE:
+ {
+ struct video_capture *vc = arg;
+
+ DBG("VIDIOCSCAPTURE\n");
+
+ if (vc->decimation != 0) { /* How should this be used? */
+ retval = -EINVAL;
+ break;
+ }
+ if (vc->flags != 0) { /* Even/odd grab not supported */
+ retval = -EINVAL;
+ break;
+ }
+
+ /* Clip to the resolution we can set for the ROI
+ (every 8 columns and 4 rows) */
+ vc->x = vc->x & ~(__u32)7;
+ vc->y = vc->y & ~(__u32)3;
+ vc->width = vc->width & ~(__u32)7;
+ vc->height = vc->height & ~(__u32)3;
+
+ if(vc->width == 0 || vc->height == 0 ||
+ vc->x + vc->width > cam->vw.width ||
+ vc->y + vc->height > cam->vw.height) {
+ retval = -EINVAL;
+ break;
+ }
+
+ DBG("%d,%d/%dx%d\n", vc->x,vc->y,vc->width, vc->height);
+
+ down(&cam->param_lock);
+
+ cam->vc.x = vc->x;
+ cam->vc.y = vc->y;
+ cam->vc.width = vc->width;
+ cam->vc.height = vc->height;
+
+ set_vw_size(cam);
+ cam->cmd_queue |= COMMAND_SETFORMAT;
+
+ up(&cam->param_lock);
+
+ /* setformat ignored by camera during streaming,
+ * so stop/dispatch/start */
+ dispatch_commands(cam);
+ break;
+ }
+
+ case VIDIOCGUNIT:
+ {
+ struct video_unit *vu = arg;
+
+ DBG("VIDIOCGUNIT\n");
+
+ vu->video = cam->vdev.minor;
+ vu->vbi = VIDEO_NO_UNIT;
+ vu->radio = VIDEO_NO_UNIT;
+ vu->audio = VIDEO_NO_UNIT;
+ vu->teletext = VIDEO_NO_UNIT;
+
+ break;
+ }
+
+
+ /* pointless to implement overlay with this camera */
+ case VIDIOCCAPTURE:
+ case VIDIOCGFBUF:
+ case VIDIOCSFBUF:
+ case VIDIOCKEY:
+ /* tuner interface - we have none */
+ case VIDIOCGTUNER:
+ case VIDIOCSTUNER:
+ case VIDIOCGFREQ:
+ case VIDIOCSFREQ:
+ /* 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 = vmalloc_to_pfn((void *)pos);
+ if (remap_pfn_range(vma, 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,
+};
+
+/* 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 = 4;
+ 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 = COMP_RED;
+ cam->params.exposure.green1Comp = COMP_GREEN1;
+ cam->params.exposure.green2Comp = COMP_GREEN2;
+ cam->params.exposure.blueComp = COMP_BLUE;
+ cam->params.colourBalance.balanceMode = 2; /* ACB */
+ cam->params.colourBalance.redGain = 32;
+ cam->params.colourBalance.greenGain = 6;
+ cam->params.colourBalance.blueGain = 92;
+ cam->params.apcor.gain1 = 0x18;
+ cam->params.apcor.gain2 = 0x16;
+ cam->params.apcor.gain4 = 0x24;
+ cam->params.apcor.gain8 = 0x34;
+ cam->params.flickerControl.flickerMode = 0;
+ cam->params.flickerControl.disabled = 1;
+
+ cam->params.flickerControl.coarseJump =
+ flicker_jumps[cam->mainsFreq]
+ [cam->params.sensorFps.baserate]
+ [cam->params.sensorFps.divisor];
+ cam->params.flickerControl.allowableOverExposure =
+ -find_over_exposure(cam->params.colourParams.brightness);
+ cam->params.vlOffset.gain1 = 20;
+ cam->params.vlOffset.gain2 = 24;
+ cam->params.vlOffset.gain4 = 26;
+ cam->params.vlOffset.gain8 = 26;
+ 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;
+ cam->exposure_status = EXPOSURE_NORMAL;
+
+ /* 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->vc.x = 0;
+ cam->vc.y = 0;
+ cam->vc.width = 0;
+ cam->vc.height = 0;
+
+ cam->vw.x = 0;
+ cam->vw.y = 0;
+ set_vw_size(cam);
+ cam->vw.chromakey = 0;
+ cam->vw.flags = 0;
+ cam->vw.clipcount = 0;
+ cam->vw.clips = NULL;
+
+ cam->cmd_queue = COMMAND_NONE;
+ cam->first_frame = 1;
+
+ 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);
+
+ printk(KERN_WARNING "Since in-kernel colorspace conversion is not "
+ "allowed, it is disabled by default now. Users should fix the "
+ "applications in case they don't work without conversion "
+ "reenabled by setting the 'colorspace_conv' module "
+ "parameter to 1");
+
+#ifdef CONFIG_PROC_FS
+ proc_cpia_create();
+#endif
+
+#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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 13:17:13 +0000