saa7115.c
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上传日期:2008-01-29
资源大小:14357k
文件大小:17k
- /*
- * Copyright 2003 by Texas Instruments Incorporated.
- * All rights reserved. Property of Texas Instruments Incorporated.
- * Restricted rights to use, duplicate or disclose this code are
- * granted through contract.
- *
- */
- /* "@(#) DDK 1.11.00.00 11-04-03 (ddk-b13)" */
- /**************************************************************************/
- /* saa7115.c file */
- /**************************************************************************/
- #include <std.h>
- #include <csl_i2c.h>
- #include <csl_stdinc.h>
- #include <edc.h>
- #include <saa7115.h>
- #include "_iic.h"
- #include "_saa7115.h"
- typedef enum {INTERLACED = TRUE, PROGRESSIVE = FALSE} FrameType ;
- static void configSAA7115(Int decNum, SAA7115_Mode inMode,
- SAA7115_Mode outMode, SAA7115_AnalogFormat inFormat);
- static void enableIPortOutput(Int channel, Bool iPortOutputEnable);
- static void enableTask(Uns channel, Uns task, Uns enableFlag);
- static void initSAA7115Def(Uns channel);
- static void powerdownSAA7115(Int channel, Bool powerDownEnable);
- static void resetSAA7115(Int channel);
- static void scalerReset(Uns channel);
- static void setInOutImageSize(Uns channel, Uns inType, Uns outType);
- static void setNTSCScalerParameters(Uns channel,Uns task, Uns frameType);
- static void setScalerGlobals(Uns channel);
- static void setSAA7115InputFormat(Int channel, SAA7115_AnalogFormat inFormat);
- static void setSAA7115SyncMode(Int channel, Bool enableBT656Sync);
- static void setupUserDefResolution(Arg arg);
- static Int SAA7115_ctrl(EDC_Handle handle, SAA7115_Cmd cmd, Arg arg);
- static Int SAA7115_close(EDC_Handle handle);
- static EDC_Handle SAA7115_open(String devName, Arg optArg);
- EDC_Fxns SAA7115_Fxns = {
- SAA7115_open,
- SAA7115_close,
- SAA7115_ctrl
- };
- static I2C_Handle hI2C[2] = {INV, INV};
- static const Int inModeTbl[2][5] = {
- {240, 0x11, 0x01, 0, 1},/* NTSC */
- {288, 0x15, 0x35, 0, 1} /* PAL */
- };
- static Int outModeTbl[9][3] = {
- {640, 480, INTERLACED},/* NTSC640 */
- {720, 480, INTERLACED},/* NTSC720 */
- {720, 576, INTERLACED},/* PAL720 */
- {768, 576, INTERLACED},/* PAL768 */
- {352, 288, INTERLACED},/* CIF */
- {176, 144, INTERLACED},/* QCIF */
- {128, 96, INTERLACED},/* SQCIF */
- {320, 240, INTERLACED},/* SIF */
- {480, 480, INTERLACED} /* USER DEFINED */
- };
- /*
- * ======== configSAA7115 ========
- */
- static void configSAA7115(Int decNum, SAA7115_Mode inMode,
- SAA7115_Mode outMode, SAA7115_AnalogFormat inFormat)
- {
- initSAA7115Def(decNum);
- setInOutImageSize(decNum,inMode,outMode);
- setSAA7115InputFormat(decNum, inFormat);
- }
- /*
- * ======== enableIPortOutput ========
- */
- static void enableIPortOutput(Int channel, Bool iPortOutputEnable)
- {
- _SAA7115_settingsDef[channel].globals.iPortEnable = iPortOutputEnable;
- _SAA7115_settingsDef[channel].globals.xPortEnable = !iPortOutputEnable;
- }
- /*
- * ======== enableTask ========
- */
- static void enableTask(Uns channel, Uns task, Uns enableFlag)
- {
- _SAA7115_Globals *globalPtr;
- Uint8 addrI2C;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- globalPtr = &_SAA7115_settingsDef[channel].globals;
- if(task == _SAA7115_TASKA) {
- globalPtr->taskAEnable = enableFlag;
- }else {
- globalPtr->taskBEnable = enableFlag;
- }
- _IIC_write(hI2C[channel], addrI2C,0x80,(Uint8 *)globalPtr,1);
- }
- /*
- * ======== initSAA7115Def ========
- */
- static void initSAA7115Def(Uns channel)
- {
- _SAA7115_Generics *genericPtr;
- Uint8 addrI2C;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- genericPtr = &_SAA7115_settingsDef[channel].generics;
- _IIC_write(hI2C[channel], addrI2C,1,(Uint8 *)genericPtr + 1,29);
- _IIC_write(hI2C[channel], addrI2C,0x30,(Uint8 *)genericPtr + 0x30,0x30);
- _IIC_write(hI2C[channel], addrI2C,0xF0,(Uint8 *)genericPtr + 0xF0,0x10);
- setScalerGlobals(channel);
- }
- /*
- * ======== powerdownSAA7115 ========
- */
- static void powerdownSAA7115(Int channel, Bool powerDownEnable)
- {
- Uint8 addrI2C;
- Uint8 powerdownSettings = 0x0d;
- /*Put _SAA7115 in power down mode */
- if(!powerDownEnable) {
- powerdownSettings = 0xf0;
- }
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- _IIC_write(hI2C[channel], addrI2C,0x88,&powerdownSettings,1);
- }
- /*
- * ======== resetSAA7115 ========
- */
- static void resetSAA7115(Int channel)
- {
- /***************************************************************/
- /* Reset 7115 */
- /***************************************************************/
- scalerReset(channel);
- powerdownSAA7115(channel, FALSE);
- }
- /*
- * ======== scalerReset ========
- */
- static void scalerReset(Uns channel)
- {
- _SAA7115_Globals *globalPtr;
- Uint8 addrI2C;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- globalPtr = &_SAA7115_settingsDef[channel].globals;
- /* reset */
- globalPtr->resetScaler = 0;
- _IIC_write( hI2C[channel], addrI2C, 0x88, (Uint8 *)globalPtr + 8, 1 );
- /* unreset */
- globalPtr->resetScaler = 1;
- _IIC_write( hI2C[channel], addrI2C, 0x88, (Uint8 *)globalPtr + 8, 1 );
- }
- /*
- * ======== setInOutImageSize ========
- */
- static void setInOutImageSize(Uns channel, Uns inType, Uns outType)
- {
- _SAA7115_Task *taskPtr;
- _SAA7115_Generics *genericPtr;
- Uns pixelsInput,linesInput,pixelsOutput,linesOutput;
- Int frameType;
- Uns scalerFlag;
- Uns xOffset = 8;
- Uns yOffset = 15;
- Uint8 addrI2C;
- Int index;
-
- pixelsInput = 720;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- index = (inType == SAA7115_MODE_NTSC720) ? 0 : 1;
- linesInput = inModeTbl[index][0];
- _SAA7115_settingsDef[channel].generics.vGateStart = inModeTbl[index][1];
- _SAA7115_settingsDef[channel].generics.vGateStop = inModeTbl[index][2];
- _SAA7115_settingsDef[channel].generics.vGateStartMsb = inModeTbl[index][3];
- _SAA7115_settingsDef[channel].generics.vGateStopMsb = inModeTbl[index][4];
-
- genericPtr = &_SAA7115_settingsDef[channel].generics;
- _IIC_write(hI2C[channel], addrI2C,0x15,(Uint8 *)genericPtr + 0X15, 3);
- index = outType;
-
- pixelsOutput = outModeTbl[index][0];
- linesOutput = outModeTbl[index][1];
- frameType = outModeTbl[index][2];
- scalerFlag = TRUE;
- if(pixelsInput == pixelsOutput) {
- if (frameType == INTERLACED){
- if (linesInput == linesOutput / 2){
- scalerFlag = FALSE;
- }
- }
- else if (linesInput == linesOutput){
- scalerFlag = FALSE;
- }
- }
- if(scalerFlag == TRUE) {
- /* enable I-port output but disable X-port output */
- _SAA7115_settingsDef[channel].globals.iPortEnable = 1;
- _SAA7115_settingsDef[channel].globals.xPortEnable = 0;
- }
- taskPtr = &_SAA7115_settingsDef[channel].taskA;
- taskPtr->xInputOffset = xOffset;
- taskPtr->yInputOffset = yOffset;
- taskPtr->xInputLength = pixelsInput;
- taskPtr->yInputLength = linesInput;
- taskPtr->xOutputLength = pixelsOutput;
- if(frameType == INTERLACED){
- taskPtr->yOutputLength = linesOutput / 2;
- }else{
- taskPtr->yOutputLength = linesOutput;
- }
- setNTSCScalerParameters(channel,_SAA7115_TASKA, frameType);
- enableTask(channel,_SAA7115_TASKA, TRUE);
- taskPtr = &_SAA7115_settingsDef[channel].taskB;
- taskPtr->xInputOffset = xOffset;
- taskPtr->yInputOffset = yOffset;
- taskPtr->xInputLength = pixelsInput;
- taskPtr->yInputLength = linesInput;
- taskPtr->xOutputLength = pixelsOutput;
- if(frameType == INTERLACED){
- taskPtr->yOutputLength = linesOutput / 2;
- }else{
- taskPtr->yOutputLength = linesOutput;
- }
- setNTSCScalerParameters(channel,_SAA7115_TASKB, frameType);
- enableTask(channel,_SAA7115_TASKB, TRUE);
-
- }
- /*
- * ======== setNTSCScalerParameters ========
- */
- static void setNTSCScalerParameters(Uns channel,Uns task, Uns frameType)
- {
- Uns i,xRatio,firLuma,firChroma,xLumaInc;
- Uns saturation,yRatio,lpiMode,yLumaInc;
- _SAA7115_Regs *regPtr;
- _SAA7115_Task *taskPtr;
- Uint8 addrI2C;
-
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- regPtr = (_SAA7115_Regs *)&_SAA7115_settingsDef[channel];
- if(task == _SAA7115_TASKA){
- taskPtr = &_SAA7115_settingsDef[channel].taskA;
- }
- else{
- taskPtr = &_SAA7115_settingsDef[channel].taskB;
- }
- taskPtr->xPreScale = taskPtr->xInputLength / taskPtr->xOutputLength;
- if(taskPtr->xPreScale == 0){
- taskPtr->xPreScale = 1;
- }
- else if(taskPtr->xPreScale > 63){
- taskPtr->xPreScale = 63;
- }
- taskPtr->xAccLength = _SAA7115_xScale.xValues[taskPtr->xPreScale].acl;
- xRatio = 100 * taskPtr->xInputLength;
- xRatio /= taskPtr->xOutputLength;
- if(xRatio > 275){
- firLuma = 3;
- }else if(xRatio > 200){
- firLuma = 2;
- }else if(xRatio >= 170){
- firLuma = 1;
- }else{
- firLuma = 0;
- }
- firChroma = firLuma;
- taskPtr->xACLWeighting = _SAA7115_xScale.xValues[taskPtr->xPreScale].c21;
- taskPtr->scalerDCGain = _SAA7115_xScale.xValues[taskPtr->xPreScale].dcGain;
- taskPtr->yPreFilterType = firLuma;
- taskPtr->cxPreFilterType = firChroma;
- xLumaInc = 1024 * taskPtr->xInputLength;
- xLumaInc /= taskPtr->xOutputLength;
- xLumaInc /= taskPtr->xPreScale;
- if(xLumaInc > 0x1FFF){
- xLumaInc = 0x1FFF;
- }
- yRatio = 100 * taskPtr->yInputLength;
- yRatio /= taskPtr->yOutputLength;
- taskPtr->brightness = 0x80;
- if(yRatio < 125){
- lpiMode = 0;
- taskPtr->contrast = 64;
- taskPtr->saturation = 64;
- }else{
- lpiMode = 1;
- saturation = 64 * taskPtr->yOutputLength;
- saturation /= taskPtr->yInputLength;
- taskPtr->contrast = (Uint8)saturation;
- taskPtr->saturation = (Uint8)saturation;
- }
- taskPtr->xLumaIncrement = xLumaInc;
- taskPtr->xChromaIncrement = xLumaInc / 2;
- taskPtr->xLumaPhaseOffset = 0;
- taskPtr->xChromaPhaseOffset = 0;
- yLumaInc = 1024 * taskPtr->yInputLength;
- yLumaInc /= taskPtr->yOutputLength;
- if(yLumaInc > 0xFFFF){
- yLumaInc = 0xFFFF;
- }
- taskPtr->yLumaIncrement = yLumaInc;
- taskPtr->yChromaIncrement = yLumaInc;
- taskPtr->verticalScalingType = lpiMode;
- for(i = 0; i < 4; i ++){
- taskPtr->yLumaPhaseOffset[i] = 0;
- taskPtr->yChromaPhaseOffset[i] = 0;
- }
- if(frameType == INTERLACED){
- taskPtr->eventTrigger = 1;
- }
- else {
- if(taskPtr == ®Ptr->taskA){
- taskPtr->eventTrigger = 2;
- }else{
- taskPtr->eventTrigger = 3;
- }
- }
- if(task == _SAA7115_TASKA){
- _IIC_write(hI2C[channel], addrI2C,0x90,(Uint8 *)taskPtr,0x30);
- }
- else {
- _IIC_write(hI2C[channel], addrI2C,0xC0,(Uint8 *)taskPtr,0x30);
- }
- }
- /*
- * ======== setScalerGlobals ========
- */
- static void setScalerGlobals(Uns channel)
- {
- _SAA7115_Globals *globalPtr;
- Uint8 addrI2C;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- globalPtr = &_SAA7115_settingsDef[channel].globals;
- _IIC_write(hI2C[channel], addrI2C,0x80,(Uint8 *)globalPtr,9);
- }
- /*
- * ======== setSAA7115InputFormat ========
- */
- static void setSAA7115InputFormat(Int channel, SAA7115_AnalogFormat inFormat)
- {
- _SAA7115_Generics *genericPtr;
- Uint8 addrI2C;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- genericPtr = &_SAA7115_settingsDef[channel].generics;
- if(inFormat == SAA7115_AFMT_SVIDEO) {
- _SAA7115_settingsDef[channel].generics.analogMuxMode = 7;
- _SAA7115_settingsDef[channel].generics.bypassYCombFilter = 1;
- _SAA7115_settingsDef[channel].generics.yCombFilter = 0;
- }
- else {
- _SAA7115_settingsDef[channel].generics.analogMuxMode = channel;
- _SAA7115_settingsDef[channel].generics.bypassYCombFilter = 0;
- _SAA7115_settingsDef[channel].generics.yCombFilter = 1;
- }
- _IIC_write(hI2C[channel], addrI2C, 0x2,(Uint8 *)genericPtr + 2,1);
- _IIC_write(hI2C[channel], addrI2C, 0x9,(Uint8 *)genericPtr + 9,1);
- }
- /*
- * ======== setSAA7115SyncMode ========
- */
- static void setSAA7115SyncMode(Int channel, Bool enableBT656Sync)
- {
- _SAA7115_Task *taskPtrA, *taskPtrB;
- _SAA7115_Generics *genericPtr;
- Uint8 addrI2C;
- addrI2C = (channel == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- genericPtr = &_SAA7115_settingsDef[channel].generics;
- taskPtrA = &_SAA7115_settingsDef[channel].taskA;
- taskPtrB = &_SAA7115_settingsDef[channel].taskB;
- if(enableBT656Sync) {
- _SAA7115_settingsDef[channel].taskA.ccir656Enable = 1;
- _SAA7115_settingsDef[channel].taskB.ccir656Enable = 1;
- _SAA7115_settingsDef[channel].generics.ofts = 0;
- _SAA7115_settingsDef[channel].generics.ofts3 = 0;
- } else {
- _SAA7115_settingsDef[channel].taskA.ccir656Enable = 0;
- _SAA7115_settingsDef[channel].taskB.ccir656Enable = 0;
- _SAA7115_settingsDef[channel].generics.ofts = 2;
- _SAA7115_settingsDef[channel].generics.ofts3 = 0;
-
-
- }
- _IIC_write(hI2C[channel], addrI2C,0x93,(Uint8 *)taskPtrA + 3,1);
- _IIC_write(hI2C[channel], addrI2C,0xc3,(Uint8 *)taskPtrB + 3,1);
- _IIC_write(hI2C[channel], addrI2C,0x13,(Uint8 *)genericPtr + 0x13, 1);
- _IIC_write(hI2C[channel], addrI2C,0x1b,(Uint8 *)genericPtr + 0x1b, 1);
-
- }
-
- /*
- * ======== setupUserDefResolution ========
- */
- static void setupUserDefResolution(Arg arg)
- {
- SAA7115_ConfParams *saa7115Params = (SAA7115_ConfParams *)arg;
- if(saa7115Params->outMode == SAA7115_MODE_USER) {
- outModeTbl[SAA7115_MODE_USER][0] = saa7115Params->hSize;
- outModeTbl[SAA7115_MODE_USER][1] = saa7115Params->vSize;
- outModeTbl[SAA7115_MODE_USER][2] = saa7115Params->interlaced;
-
-
- }
-
- }
- /*
- * ======== SAA7115_close ========
- */
- static Int SAA7115_close(EDC_Handle handle)
- {
- Int devId = (int)handle;
- /*First Check if the Handle is correct */
- if(devId == 0 || devId == 1) {
- /*Put _SAA7115 in power down mode */
- powerdownSAA7115(devId, TRUE);
- return EDC_SUCCESS;
- } else {
- return EDC_FAILED;
- }
- }
- /*
- * ======== SAA7115_ctrl ========
- */
- static Int SAA7115_ctrl(EDC_Handle handle, SAA7115_Cmd cmd, Arg arg)
- {
- Int devId = (int)handle;
- _SAA7115_Generics *genericPtr;
- Uint8 addrI2C;
-
- addrI2C = (devId == 0) ? _SAA7115_IIC_ADDR0 : _SAA7115_IIC_ADDR1;
- genericPtr = &_SAA7115_settingsDef[devId].generics;
- /*First Check if the Handle is correct */
- if(devId != 0 && devId != 1) {
- return EDC_FAILED;
- }
-
- switch(cmd) {
- case EDC_CONFIG: {
- SAA7115_ConfParams *saa7115Params = (SAA7115_ConfParams *)arg;
- hI2C[devId] = saa7115Params->hI2C;
- enableIPortOutput(devId, saa7115Params->enableIPortOutput);
- setupUserDefResolution(arg);
- configSAA7115(devId, saa7115Params->inMode, saa7115Params->outMode,
- saa7115Params->aFmt);
- setSAA7115SyncMode(devId, saa7115Params->enableBT656Sync);
- }
- break;
- case EDC_RESET:
- resetSAA7115(devId);
- break;
- case SAA7115_POWERDOWN:
- powerdownSAA7115(devId, TRUE);
- break;
- case SAA7115_POWERUP:
- powerdownSAA7115(devId, FALSE);
- break;
- case SAA7115_SET_AMUXMODE:
- _SAA7115_settingsDef[devId].generics.analogMuxMode = (int)arg;
- if((int)arg >= 6) {/* svideo input */
- _SAA7115_settingsDef[devId].generics.bypassYCombFilter = 1;
- _SAA7115_settingsDef[devId].generics.yCombFilter = 0;
- }else {
- _SAA7115_settingsDef[devId].generics.bypassYCombFilter = 0;
- _SAA7115_settingsDef[devId].generics.yCombFilter = 1;
- }
- _IIC_write(hI2C[0], addrI2C,0x2,(Uint8 *)genericPtr + 2,1);
- _IIC_write(hI2C[0], addrI2C,0x9,(Uint8 *)genericPtr + 9,1);
- break;
- }
- return EDC_SUCCESS;
- }
-
- /*
- * ======== SAA7115_open ========
- */
- static EDC_Handle SAA7115_open(String devName, Arg optArg)
- {
- Int devId;
- /* Check if the addresse is correct */
- if(devName[0] != '/') {
- devId = -1;
- } else if(devName[1] == '0') {
- devId = 0;
- } else if(devName[1] == '1'){
- devId = 1;
- } else {
- devId = -1;
- }
- return (EDC_Handle)devId;
- }
- /**************************************************************************/
- /* End of file */
- /**************************************************************************/