vport.rar_vport_视频 驱动

/* * 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)" */ /* DSP/BIOS standard include files */ #include <std.h> #include <mem.h> #include <que.h> #include <tsk.h> /* Chip-support library include files */ #include <csl.h> #include <csl_edma.h> #include <csl_vphal.h> #include <csl_irq.h> #include <csl_cache.h> #include <csl_dat.h> /* IOM/GIO driver model include files */ #include <iom.h> #include <fvid.h> /* video driver specif-ic include files */ #include <vport.h> #include <vportdis.h> #include <edc.h> #include "_vport.h" /* debug include files */ /* to minimize code size and cycle count overhead of the driver */ /* error checking is only performed at debug time */ #include <assert.h> /* mini-driver API functions */ static Int mdBindDev(Ptr *devp, Int devid, Ptr devParams); static Int mdControlChan(Ptr chanp, Uns cmd, Ptr args); static Int mdCreateChan(Ptr *chanp, Ptr devp, String name, Int mode, Ptr chanParams, IOM_TiomCallback cbFxn, Ptr cbArg); static Int mdDeleteChan(Ptr chanp); static Int mdSubmitChan(Ptr chanp, IOM_Packet *packet); /* local functions */ static Int _configChan(Ptr chanp, Ptr args); static Int _configEDMA(Ptr chanp, VPORTDIS_Params *params); static Int _configPort(Ptr chanp, Ptr args); static Int _configRegs(Ptr chanp, VPORTDIS_Params *params); static void displayEdmaISR(Int tcc); static void displayISR(int portNum); static Int _displayStart(Ptr chanp); static Int _displayStop(Ptr chanp); static Int _dundRecover(Ptr chanp); static Int _getlastActiveLine(VPORTDIS_Params* params); static Int _setVIntCb(Ptr chanp, Ptr args); /* global and static variables */ IOM_Fxns VPORTDIS_Fxns = { mdBindDev, (IOM_TmdUnBindDev)IOM_mdNotImpl, mdControlChan, mdCreateChan, mdDeleteChan, mdSubmitChan }; /************************************************************** * Static allocation and initialization of port objects * * as display supports only 1 channel, the same channel * * object for capture is used here for the whoel port * **************************************************************/ _VPORT_ChanObj chanObjs[_VP_PORT_CNT] = { {0, 0, 0, _VP_BASE_PORT0, EDMA_CHA_VP0EVTYA, EDMA_CHA_VP0EVTUA, EDMA_CHA_VP0EVTVA, _VP_YDSTA0_ADDR, _VP_CBDST0_ADDR, _VP_CRDST0_ADDR}, {0, 1, 0, _VP_BASE_PORT1, EDMA_CHA_VP1EVTYA, EDMA_CHA_VP1EVTUA, EDMA_CHA_VP1EVTVA, _VP_YDSTA1_ADDR, _VP_CBDST1_ADDR, _VP_CRDST1_ADDR}, {0, 2, 0, _VP_BASE_PORT2, EDMA_CHA_VP2EVTYA, EDMA_CHA_VP2EVTUA, EDMA_CHA_VP2EVTVA, _VP_YDSTA2_ADDR, _VP_CBDST2_ADDR, _VP_CRDST2_ADDR }, }; /* * ======== mdBindDev ======== * Register all external devices to video port display driver */ static Int mdBindDev(Ptr *devp, Int devid, Ptr devParams) { Int portNum = devid; volatile Int i; volatile Int* base = (volatile Int *)chanObjs[portNum].base; assert(portNum < _VP_PORT_CNT); base[_VP_VPCTL_OFFSET] = VP_VPCTL_VPRST_RESET << _VP_VPCTL_VPRST_SHIFT; for(i = 0; i < 100000; i ++); *devp = &chanObjs[portNum]; return mdControlChan(&chanObjs[portNum], VPORT_CMD_CONFIG_PORT, devParams); } /* * ======== mdControlChan ======== */ static Int mdControlChan(Ptr chanp, Uns cmd, Ptr args) { Int retVal = IOM_COMPLETED; _VPORT_ChanObj* chan = (_VPORT_ChanObj *)chanp; /* command dispatcher */ switch (cmd){ case VPORT_CMD_START: retVal = _displayStart(chanp); break; case VPORT_CMD_STOP: retVal = _displayStop(chanp); break; case VPORT_CMD_CONFIG_CHAN: retVal = _configChan(chanp, args); break; case VPORT_CMD_SET_VINTCB: _setVIntCb(chanp, args); break; case VPORT_CMD_DUND_RECOVER: retVal = _dundRecover(chanp); break; case VPORT_CMD_CONFIG_PORT: retVal = _configPort(chanp, args); break; default: if(chan->edcFxns!=INV) { retVal = chan->edcFxns->ctrl(chan->edcHandle, cmd-VPORT_CMD_EDC_BASE,(Arg)args); }else { retVal = IOM_ENOTIMPL; } } return retVal; } /* * ======== mdCreateChan ======== * create a channel */ static Int mdCreateChan(Ptr *chanp, Ptr devp, String name, Int mode, Ptr chanParams, IOM_TiomCallback cbFxn, Ptr cbArg) { _VPORT_ChanObj* chan; Int retVal = IOM_COMPLETED; Int j; if(mode != IOM_OUTPUT){ return IOM_EBADARGS; } chan = (_VPORT_ChanObj *)devp; if(chan->edcFxns != INV) { /* open external device */ chan->edcHandle = chan->edcFxns->open(name, (Arg)INV); } if(! (chan->status & _VPORT_OPENED)) { chan->status |= _VPORT_OPENED; chan->vIntMask = 0; QUE_new(&chan->qIn); QUE_new(&chan->qOut); chan->cbFxn = cbFxn; chan->vIntFxn = (VPORT_IntCallBack)INV; chan->queEmpty = FALSE; chan->cbArg = (Arg)cbArg; chan->packetIOM = INV; chan->vIntCbArg = (Int)INV; chan->bufSz = 0; /* allocate EDMA PaRAM and RLD entries */ for(j = 0; j < _VPORT_NUM_EDMA_CHANS && retVal == IOM_COMPLETED; j ++ ) { if((chan->hEdma[j] = EDMA_open(chan->edmaChanNum[j], EDMA_OPEN_RESET)) == EDMA_HINV || (chan->hRld[4 * j] = EDMA_allocTable(-1)) == EDMA_HINV || (chan->hRld[4 * j + 1] =EDMA_allocTable(-1)) == EDMA_HINV || (chan->hRld[4 * j + 2] =EDMA_allocTable(-1)) == EDMA_HINV || (chan->hRld[4 * j + 3] =EDMA_allocTable(-1)) == EDMA_HINV || (chan->tcc[j] = EDMA_intAlloc(chan->edmaChanNum[j])) == -1){ retVal = IOM_EALLOC; retVal = IOM_EALLOC; }/* if((chan->...*/ }/* for(j = 0; j < NUM_EDMA_CHANS; j++) {...*/ /* if EDMA resources are allocated successfully, go ahead */ /* and configure the channel */ if(retVal == IOM_COMPLETED && (void *)chanParams != INV) { retVal = mdControlChan(chan, VPORT_CMD_CONFIG_CHAN, chanParams); } if(! retVal) { /* configured the channel successfully, return handle */ *chanp = chan; }else { /* failed, free all resources and return error */ mdDeleteChan(chan); *chanp = INV; } } /*if(!chan->opened) */ return retVal; } /* * ======== mdDeleteChan ======== * delete the channel */ static Int mdDeleteChan(Ptr chanp) { _VPORT_ChanObj* chan = (_VPORT_ChanObj* )chanp; Int j; volatile Int* base; if(chan->status & _VPORT_OPENED) { chan->status = 0; mdControlChan(chanp, VPORT_CMD_STOP, NULL); for(j = 0; j < _VPORT_NUM_EDMA_CHANS; j ++) { EDMA_disableChannel(chan->hEdma[j]); EDMA_clearChannel(chan->hEdma[j]); EDMA_close(chan->hEdma[j]); EDMA_freeTable(chan->hRld[4 * j]); EDMA_freeTable(chan->hRld[4 * j + 1]); EDMA_freeTable(chan->hRld[4 * j + 2]); EDMA_freeTable(chan->hRld[4 * j + 3]); EDMA_intFree(chan->tcc[j]); }