Initial import of sane-backends version 1.0.24-1.2

1 files changed, 877 insertions, 0 deletions

diff --git a/backend/plustek-pp_p48xx.c b/backend/plustek-pp_p48xx.c
new file mode 100644
index 0000000..6175a34
--- /dev/null
+++ b/backend/plustek-pp_p48xx.c
@@ -0,0 +1,877 @@
+/* @file plustek-pp_p48xx.c
+ * @brief here we have all functionality according to the ASIC96001/3 based
+ *        models.
+ *
+ * based on sources acquired from Plustek Inc.
+ * Copyright (C) 1998 Plustek Inc.
+ * Copyright (C) 2000-2013 Gerhard Jaeger <gerhard@gjaeger.de>
+ * also based on the work done by Rick Bronson
+ *
+ * History:
+ * - 0.30 - initial version
+ * - 0.31 - fixed a bug for the return value in p48xxDoTest
+ *        - added additional debug messages
+ *        - added function p48xxCheck4800Memory
+ * - 0.32 - added debug messages
+ *        - fixed a bug in p48xxDoTest
+ *        - disabled RD_WatchDogControl, lamp will be controlled by driver
+ * - 0.33 - added function p48xxSetAsicRegisters()
+ *        - fixed a bug in p48xxDoTest (reset the ASIC registers)
+ *        - removed p48xxPositionLamp
+ * - 0.34 - added some comments
+ * - 0.35 - added some comments
+ * - 0.36 - added function p48xxInitAllModules() to allow reinit of the modules
+ *        - switching from Full- to Halfstep at ps->PhysicalDpi now in
+ *        - p48xxSetGeneralRegister
+ *        - fixed the color-inverse problem for model OP4800
+ * - 0.37 - move p48xxOpenScanPath, p48xxCloseScanPath
+ *          and p48xxRegisterToScanner to io.c
+ *        - removed // comments
+ *        - added override for A3I scanner
+ * - 0.38 - added function p48xxPutToIdleMode()
+ *        - added function p48xxCalibration
+ * - 0.39 - added A3I stuff
+ * - 0.40 - disabled A3I stuff
+ * - 0.41 - no changes
+ * - 0.42 - changed include names
+ * - 0.43 - no changes
+ * - 0.44 - fix format string issues, as Long types default to int32_t
+ *          now
+ * .
+ * <hr>
+ * This file is part of the SANE package.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * As a special exception, the authors of SANE give permission for
+ * additional uses of the libraries contained in this release of SANE.
+ *
+ * The exception is that, if you link a SANE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public
+ * License.  Your use of that executable is in no way restricted on
+ * account of linking the SANE library code into it.
+ *
+ * This exception does not, however, invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public
+ * License.
+ *
+ * If you submit changes to SANE to the maintainers to be included in
+ * a subsequent release, you agree by submitting the changes that
+ * those changes may be distributed with this exception intact.
+ *
+ * If you write modifications of your own for SANE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.
+ * <hr>
+ */
+#include "plustek-pp_scan.h"
+
+/*************************** some definitions ********************************/
+
+#define _TEST_SZ   2048  	  /* always use 2048 for mem size (= one bank)   */
+#define _START_VAL 0x12345678 /* pick a non-zero starting value for our long */
+
+#define _BankAndSizeForTest	_MemBankSize2k  /* always use 2k for mem test */
+
+/*************************** local functions *********************************/
+
+/*.............................................................................
+ * 1) Set asic to PROGRAM mode
+ * 2) Select the memory bank and size
+ * 3) Initiate data fifo
+ */
+static void p48xxSetMemoryBankForProgram( pScanData ps , Byte bBankAndSize )
+{
+	/* enter program mode */
+	IODataToRegister( ps, ps->RegModeControl, _ModeProgram );
+
+	/* bank and size */
+    IODataToRegister( ps, ps->RegMemAccessControl, bBankAndSize );
+
+	/* initiate data fifo */
+    IORegisterToScanner( ps, ps->RegInitDataFifo );
+}
+
+/*.............................................................................
+ * use the internal memory of a scanner to find the model
+ */
+static int p48xxDoTest( pScanData ps )
+{
+	UChar  tmpByte;
+	int	   retval;
+	ULong  adder, ul, cntr;
+	pULong buffer;
+
+	DBG( DBG_LOW, "p48xxDoTest()\n" );
+
+	buffer = _KALLOC( sizeof(UChar) *  _TEST_SZ, GFP_KERNEL );
+	if( NULL == buffer )
+		return _E_ALLOC;
+
+	retval = _E_NO_DEV;
+
+	/*
+	 * do a memory test to determine how much memory this unit has, in the
+     * process we can figure out if it's a 4830 or a 9630.  NOTE: the ram
+     * seems to be mirrored such that if you have a unit with only 32k it's
+     * mirrored 4 times to fill the 128k (2k * (_MemBankMask + 1)) space,
+     * so we will run a 32 bit incrementing pattern over the entire 128k and
+     * look for the 1st page (2k) to fail
+  	 */
+ 	adder = 0;
+    for (cntr = _BankAndSizeForTest;
+         cntr < _BankAndSizeForTest + _MemBanks; cntr++) {
+
+    	ps->OpenScanPath( ps );
+
+		p48xxSetMemoryBankForProgram( ps, cntr );
+
+		/* prepare content, incrementing 32 val */
+   		for (ul = 0; ul < _TEST_SZ / sizeof(ULong); ul++)
+       		buffer[ul] = ul + adder + _START_VAL;
+
+		/* fill to buffer */
+   		IOMoveDataToScanner( ps, (pUChar)buffer, _TEST_SZ );
+
+   		/*
+ 		 * now check bank 0 to see if it got overwritten
+		 * bank 0, size 2k
+		 */
+		p48xxSetMemoryBankForProgram( ps, _BankAndSizeForTest );
+
+    	ps->CloseScanPath( ps );
+
+		/* read data back */
+   		IOReadScannerImageData( ps, (pUChar)buffer, _TEST_SZ );
+
+		/* check */
+   		for (ul = 0; ul < _TEST_SZ / sizeof(ULong); ul++) {
+      		if (buffer[ul] != ul + _START_VAL) {
+       			break;
+			}
+		}
+
+		/* if fail 	*/
+   		if (ul != _TEST_SZ / sizeof (ULong)) {
+			DBG( DBG_LOW, "Bank 0 overwritten\n" );
+       		break;
+		}
+
+   		/* now check current bank */
+    	ps->OpenScanPath( ps );
+		p48xxSetMemoryBankForProgram( ps, cntr );
+    	ps->CloseScanPath( ps );
+
+		/* read data back */
+   		IOReadScannerImageData( ps, (pUChar)buffer, _TEST_SZ);
+
+		/* check if fail */
+   		for( ul = 0; ul < _TEST_SZ / sizeof(ULong); ul++ ) {
+       		if( buffer[ul] != ul + adder + _START_VAL )
+       			break;
+		}
+
+		/* check if fail */
+   		if (ul != _TEST_SZ / sizeof(ULong)) {
+			DBG( DBG_LOW, "Bank not present, error at pos %u (%u)\n", ul,
+				 (ULong)(_TEST_SZ / sizeof(ULong)));
+       		break;
+		}
+
+   		adder += _TEST_SZ / sizeof(ULong);
+   	}
+
+	_KFREE( buffer );
+
+	DBG( DBG_LOW, "found %d bytes of memory\n",
+					_TEST_SZ * (cntr - _BankAndSizeForTest));
+
+	if( cntr == _BankAndSizeForTest ) {
+		DBG( DBG_LOW, "No memory ! No scanner...\n" );
+		return retval;
+	}
+
+#ifdef DEBUG
+	tmpByte = IODataRegisterFromScanner( ps, 0x18 );
+	DBG( DBG_LOW, "tmpByte[0x18] = 0x%02x\n",tmpByte );
+#endif
+
+	tmpByte = IODataRegisterFromScanner( ps, 0x0e );
+	DBG( DBG_LOW, "tmpByte = 0x%02x, cntr = %u, AsicId = 0x%02x\n",
+				   tmpByte, cntr, ps->sCaps.AsicID );
+
+	/* 128k */
+    if ((_TEST_SZ * (cntr - _BankAndSizeForTest) == 1 << 17) &&
+								       (ps->sCaps.AsicID ==  _ASIC_IS_96003)) {
+
+        /*
+		 * if 128k then must be a 9630 or above
+		 * hack, test for 12000P, The 9630 returns an 0x08
+		 */
+       	if ( tmpByte == 0x02 ) {
+
+            /*
+             * as we currently can't automagically detect an A3I we have to
+             * use the override switch
+             */
+            if( _OVR_PLUSTEK_A3I == ps->ModelOverride ) {
+
+        		DBG( DBG_LOW, "Model Override --> A3I\n" );
+    			ModelSetA3I( ps );
+            } else {
+            	ModelSet12000( ps );
+	    		DBG( DBG_LOW, "It seems we have a 12000P/96000P\n" );
+            }
+
+		}  	else {
+        	ModelSet9630( ps );
+			DBG( DBG_LOW, "It seems we have a 9630\n" );
+		}
+
+		retval = _OK;
+
+	} else {
+
+		DBG( DBG_LOW, "Scanner is not a 9630 or above\n");
+
+      	if ( tmpByte != 0x0f  ) {
+
+			DBG( DBG_LOW, "Looks like a 600!\n" );
+
+			if (( 0x08 == tmpByte ) &&
+				((_TEST_SZ * (cntr - _BankAndSizeForTest)) == 32768 )) {
+	       		DBG( DBG_LOW, "But it is a 4830P!!! "
+							  "(by mkochano@ee.pw.edu.pl)\n" );
+				ModelSet4830( ps );
+          	} else {
+          		ModelSet600( ps );
+			}
+		}
+#ifdef DEBUG
+		else
+			DBG( DBG_LOW, "It seems we have a 4830\n" );
+#endif
+
+		retval = _OK;
+	}
+
+	return retval;
+}
+
+/*.............................................................................
+ * setup ASIC registers and clear all scan states (no stepping)
+ */
+static void p48xxSetAsicRegisters( pScanData ps )
+{
+	memset( &ps->AsicReg,   0, sizeof(ps->AsicReg));
+	memset( &ps->Asic96Reg, 0, sizeof(ps->Asic96Reg));
+    memset( ps->a_nbNewAdrPointer, 0, _SCANSTATE_BYTES );
+
+   	ps->AsicReg.RD_LineControl       = ps->TimePerLine;
+   	ps->AsicReg.RD_ScanControl       = _SCAN_LAMP_ON;
+   	ps->AsicReg.RD_ModelControl      = ps->Device.ModelCtrl | _ModelWhiteIs0;
+   	ps->AsicReg.RD_Origin 	   	     = 0;
+   	ps->AsicReg.RD_Pixels 	   	     = 5110; /*ps->RdPix;*/
+   	ps->Asic96Reg.RD_MotorControl    = 0;
+   	ps->Asic96Reg.RD_WatchDogControl = 0; /* org. val = 0x8f; */
+
+	IOPutOnAllRegisters( ps );
+}
+
+/*.............................................................................
+ * use the internal memory of a scanner to find the model
+ */
+static int p48xxCheck4800Memory( pScanData ps )
+{
+	int	   retval;
+	ULong  ul;
+	pUChar buffer;
+
+	DBG( DBG_LOW, "p48xxCheck4800Memory()\n" );
+
+	buffer = _KALLOC( 2560, GFP_KERNEL ); /* 1280: Read,1280:Write */
+	if( NULL == buffer )
+		return _E_ALLOC;
+
+	retval = _OK;
+
+	/* bank 0, size 2k */
+	ps->OpenScanPath( ps );
+	p48xxSetMemoryBankForProgram( ps, _BankAndSizeForTest );
+
+	for (ul = 0; ul < 1280; ul++)
+	    buffer[ul] = (UChar)ul;			      /* prepare content */
+
+	IOMoveDataToScanner( ps, buffer, 1280 );  /* fill to buffer  */
+	p48xxSetMemoryBankForProgram( ps, _BankAndSizeForTest );
+	ps->CloseScanPath( ps );
+
+	/* read data back */
+	IOReadScannerImageData( ps, buffer + 1280, 1280 );
+
+	for( ul = 0; ul < 1280; ul++ ) {
+		if( buffer[ul] != buffer[ul+1280] ) {
+			DBG( DBG_HIGH, "Error in memory test at pos %u (%u != %u)\n",
+							 ul, buffer[ul], buffer[ul+1280] );
+			retval = _E_NO_DEV;
+			break;
+		}
+	}
+
+	_KFREE(buffer);
+
+    return retval;
+}
+
+/*.............................................................................
+ * call all other modules, to initialize themselves
+ */
+static int p48xxInitAllModules( pScanData ps )
+{
+	int result;
+
+	result = DacInitialize( ps );
+	if( _OK != result )
+		return result;
+
+	result = ImageInitialize( ps );
+	if( _OK != result )
+		return result;
+
+	result = IOFuncInitialize( ps );
+	if( _OK != result )
+		return result;
+
+	result = IOInitialize( ps );
+	if( _OK != result )
+		return result;
+
+	result = MotorInitialize( ps );
+	if( _OK != result )
+		return result;
+
+	/*
+	 * in debug version, check all function pointers
+	 */
+#ifdef DEBUG
+	if(	_FALSE == MiscAllPointersSet( ps ))
+		return _E_INTERNAL;
+#endif
+	return _OK;
+}
+
+/*.............................................................................
+ *
+ */
+static int p48xxReadWriteTest( pScanData ps )
+{
+	int retval;
+
+	DBG( DBG_LOW, "p48xxReadWriteTest()\n" );
+
+	/*
+     * determine the model by the ASIC type (except for 4830/9630)
+     * might want to make a SetModelCommon() someday for this...
+   	 */
+	ps->RedDataReady   = 0x01;  /* normal for Red and Green */
+  	ps->GreenDataReady = 0x02;
+	ps->AsicRedColor   = 0x01;
+	ps->AsicGreenColor = 0x03;
+
+	/*
+ 	 * if not already set, try to find ASIC type (96001 or 96003)
+	 */
+  	if ( _NO_BASE == ps->sCaps.wIOBase ) {
+
+		/* get copy of asic id */
+	    ps->sCaps.AsicID = IODataRegisterFromScanner( ps, ps->RegAsicID );
+
+    	if ( _ASIC_IS_96003 == ps->sCaps.AsicID ) {
+
+			/* actually either a 4830, 9630, 12000, find out later */
+       		DBG( DBG_LOW, "Found a 96003 ASIC at Reg 0x%x\n", ps->RegAsicID );
+      		ModelSet4830( ps );
+
+    	} else {
+
+      		if ( _ASIC_IS_96001 == ps->sCaps.AsicID ) {
+	       		DBG( DBG_LOW, "Found a 96001 ASIC at Reg 0x%x\n",
+															   ps->RegAsicID );
+        		ModelSet4800( ps );
+      		} else {
+        		DBG( DBG_LOW, "Can't find your model, asic = 0x%x\n",
+														    ps->sCaps.AsicID );
+        		return _E_NO_ASIC;
+        	}
+		}
+    }
+
+	/*
+	 * set the registers according to the assumptions above
+	 */
+	p48xxSetAsicRegisters( ps );
+
+   	if ( _ASIC_IS_96003 == ps->sCaps.AsicID ) {
+		retval = p48xxDoTest( ps );
+
+		/*
+		 * as we may now have detected another model, we have to set
+		 * the registers to their new values...
+		 * and maybe the modules have to be reset as well
+		 */
+		if( _OK == retval ) {
+			p48xxSetAsicRegisters( ps );
+			retval = p48xxInitAllModules( ps );
+		}
+
+		return retval;
+	}
+
+	/*
+	 * this part will be reached only for the 4800 - ASIC 96001
+     * we check only the memory as the original driver does
+	 */
+	return p48xxCheck4800Memory( ps );
+}
+
+/*.............................................................................
+ * 1) Setup the registers of asic.
+ * 2) Determine which type of CCD we are using
+ * 3) According to the CCD, prepare the CCD dependent veriables
+ *  SONY CCD:
+ *	The color exposure sequence: Red, Green (after 11 red lines),
+ *	Blue (after 8 green lines)
+ *  TOSHIBA CCD:
+ *  The color exposure sequence: Red, Blue (after 11 red lines),
+ *	Green (after 8 blue lines)
+ */
+static void p48xxSetupScannerVariables( pScanData ps )
+{
+	UChar    tmp;
+	TimerDef timer;
+
+	DBG( DBG_LOW, "p48xxSetupScannerVariables()\n" );
+
+    ps->OpenScanPath( ps );
+
+	IODataToRegister( ps, ps->RegModelControl2, _Model2ChannelMult );
+
+    if( 2 == IODataFromRegister( ps, ps->RegWriteIOBusDecode1 )) {
+
+		DBG( DBG_LOW, "Scanner has 97003 ASIC too.\n" );
+		ps->f97003 = _TRUE;
+		ps->b97003DarkR = 8;
+		ps->b97003DarkG = 8;
+		ps->b97003DarkB = 8;
+
+	    ps->Asic96Reg.u26.RD_ModelControl2 = _Model2ChannelMult;
+	} else {
+
+		DBG( DBG_LOW, "No ASIC 97003 found.\n" );
+		ps->f97003 = _FALSE;
+	    ps->Asic96Reg.u26.RD_ModelControl2 = _Model2DirectOutPort;
+	}
+
+	IODataToRegister( ps, ps->RegModelControl2,
+				  	  ps->Asic96Reg.u26.RD_ModelControl2 );
+
+	tmp = IODataFromRegister( ps, ps->RegStatus );
+	DBG( DBG_LOW, "Status-Register = 0x%02X\n", tmp );
+#ifdef DEBUG
+	if( tmp & _FLAG_P96_MOTORTYPE ) {
+		DBG( DBG_LOW, "Scanner has Full/Half Stepping drive\n" );
+	} else {
+		DBG( DBG_LOW, "Scanner has Micro Stepping drive\n" );
+	}
+#endif
+
+    if( tmp & _FLAG_P96_CCDTYPE) {
+		ps->fSonyCCD = _FALSE;
+		DBG( DBG_LOW, "CCD is NEC/TOSHIBA Type\n" );
+	} else {
+		ps->fSonyCCD = _TRUE;
+		DBG( DBG_LOW, "CCD is SONY Type\n" );
+	}
+
+    ps->CloseScanPath( ps );
+
+    ps->b1stColorByte = ps->AsicRedColor;
+    ps->b1stColor 	  = ps->RedDataReady;
+
+	if (ps->fSonyCCD) {
+
+		ps->b2ndColorByte = ps->AsicGreenColor;
+		ps->b2ndColor 	  = ps->GreenDataReady;
+		ps->b3rdColorByte = _ASIC_BLUECOLOR;
+		ps->b3rdColor 	  = _BLUE_DATA_READY;
+
+	}  else  { /* NEC/Toshiba CCD */
+
+		ps->b2ndColorByte = _ASIC_BLUECOLOR;
+		ps->b2ndColor 	  = _BLUE_DATA_READY;
+		ps->b3rdColorByte = ps->AsicGreenColor;
+		ps->b3rdColor 	  = ps->GreenDataReady;
+	}
+
+    ps->b1stMask = (Byte)~ps->b1stColor;
+    ps->b2ndMask = (Byte)~ps->b2ndColor;
+	ps->b3rdMask = (Byte)~ps->b3rdColor;
+
+    ps->b1stLinesOffset = 17;
+    ps->b2ndLinesOffset = 9;
+
+    /*
+	 * calculate I/O Timer
+     * if we cannot read 200 lines within 1 second, the I/O time has to add 2
+     * CalculateIOTime ()
+	 */
+    if( _PORT_SPP != ps->IO.portMode ) {
+
+		UShort wLines = 200;
+		pUChar pBuf;
+
+		pBuf = _KALLOC((_BUF_SIZE_BASE_CONST * 2), GFP_KERNEL );
+
+		if ( NULL != pBuf ) {
+
+			MiscStartTimer( &timer, _SECOND );
+
+		    do {
+				IOReadScannerImageData( ps, pBuf, (_BUF_SIZE_BASE_CONST * 2));
+
+				wLines--;
+		    } while (!MiscCheckTimer( &timer) && wLines);
+
+		    if( !wLines )
+				ps->bExtraAdd = 0;
+		    else
+				ps->bExtraAdd = 2;
+
+			_KFREE( pBuf );
+
+		} else {
+	    	ps->bExtraAdd = 2;	/* poor resource */
+		}
+	} else {
+		ps->bExtraAdd = 0;
+	}
+}
+
+/*.............................................................................
+ *
+ */
+static void p48xxSetGeneralRegister( pScanData ps )
+{
+	if( MODEL_OP_A3I == ps->sCaps.Model ) {
+		ps->AsicReg.RD_ModelControl = _ModelDpi400 | _ModelWhiteIs0 |
+									  _ModelMemSize128k4;
+    }
+
+    ps->AsicReg.RD_ModeControl = _ModeScan;
+
+/* WORK: ps->PhysicalDpi should be correct, but the we have to work
+ *       on motor.c again to use other running-tables
+ *    if ( ps->DataInf.xyAppDpi.y <= ps->PhysicalDpi ) {
+ */
+	if ( ps->DataInf.xyAppDpi.y <= 300 ) {
+/* HEINER:A3I
+ 	if ( ps->DataInf.xyAppDpi.y <= ps->PhysicalDpi ) {
+*/
+		ps->Asic96Reg.RD_MotorControl = (ps->FullStep | ps->IgnorePF |
+									     ps->MotorOn | _MotorDirForward);
+	} else {
+		ps->Asic96Reg.RD_MotorControl = (ps->IgnorePF | ps->MotorOn |
+										 _MotorDirForward);
+	}
+
+    if ( ps->DataInf.wPhyDataType == COLOR_BW ) {
+        ps->AsicReg.RD_ScanControl = ps->bLampOn;
+
+	    if (!(ps->DataInf.dwScanFlag & SCANDEF_Inverse))
+    	    ps->AsicReg.RD_ScanControl |= _P96_SCANDATA_INVERT;
+
+    } else {
+
+        ps->AsicReg.RD_ScanControl = ps->bLampOn | _SCAN_BYTEMODE;
+
+	    if (ps->DataInf.dwScanFlag & SCANDEF_Inverse)
+    	    ps->AsicReg.RD_ScanControl |=  _P96_SCANDATA_INVERT;
+    }
+
+    if (ps->DataInf.xyPhyDpi.x <= 200)
+        ps->AsicReg.RD_ScanControl |= _SCAN_1ST_AVERAGE;
+
+	DBG( DBG_LOW, "RD_ModeControl  = 0x%02x\n", ps->AsicReg.RD_ModeControl  );
+	DBG( DBG_LOW, "RD_MotorControl = 0x%02x\n", ps->Asic96Reg.RD_MotorControl );
+	DBG( DBG_LOW, "RD_ScanControl  = 0x%02x\n", ps->AsicReg.RD_ScanControl  );
+}
+
+/*.............................................................................
+ *
+ */
+static void p48xxSetupScanningCondition( pScanData ps )
+{
+	DBG( DBG_LOW, "p48xxSetupScanningCondition()\n" );
+
+	IORegisterDirectToScanner( ps, ps->RegInitDataFifo );
+
+   /* Cal64kTime (); */
+	if( MODEL_OP_A3I == ps->sCaps.Model )
+	    ps->wLinesPer64kTime = (UShort)(65555UL / ps->DataInf.dwAsicBytesPerPlane *
+				 			        5UL);
+    else
+	    ps->wLinesPer64kTime = (UShort)(65555UL / ps->DataInf.dwAsicBytesPerPlane *
+				 			        10UL / 3UL);
+
+	DBG( DBG_LOW, "wLinesPer64kTime = %u\n", ps->wLinesPer64kTime );
+
+    ps->InitialSetCurrentSpeed( ps );
+
+	DBG( DBG_LOW, "Current Speed = %u\n", ps->bCurrentSpeed );
+
+    ps->bMinReadFifo = (Byte)((ps->DataInf.dwAsicBytesPerPlane + 511) / 512);
+	DBG( DBG_LOW, "MinReadFifo = %u\n", ps->bMinReadFifo );
+
+    p48xxSetGeneralRegister( ps );
+
+	/*
+	 * if speed is not the fastest and DPI is less than 400, do half steps
+	 */
+    if( ps->DataInf.wPhyDataType >= COLOR_256GRAY &&
+		!(ps->bCurrentSpeed & 1) && (ps->DataInf.xyAppDpi.y <= 300)) {
+/* HEINER:A3I
+	if( !(ps->bCurrentSpeed & 1) && (ps->DataInf.xyAppDpi.y <= ps->PhysicalDpi)) {
+*/
+		ps->fHalfStepTableFlag = _TRUE;
+		ps->Asic96Reg.RD_MotorControl &= ps->StepMask;
+    }
+
+    ps->AsicReg.RD_Dpi = ps->DataInf.xyPhyDpi.x;
+	DBG( DBG_LOW, "RD_Dpi = %u\n", ps->AsicReg.RD_Dpi );
+
+    /* SetStartStopRegister (ps) */
+    ps->AsicReg.RD_Origin = (UShort)(ps->Offset70 + ps->Device.DataOriginX +
+					                 ps->DataInf.crImage.x);
+
+    if (ps->DataInf.wPhyDataType < COLOR_256GRAY) {
+		ps->AsicReg.RD_Pixels =
+					(UShort)(ps->DataInf.dwAsicPixelsPerPlane + 7) & 0xfff8;
+	} else {
+		ps->AsicReg.RD_Pixels = (UShort)ps->DataInf.dwAsicPixelsPerPlane;
+	}
+
+	DBG( DBG_LOW, "RD_Pixels = %u\n", ps->AsicReg.RD_Pixels );
+
+    /* SetupMotorStart () */
+	IORegisterDirectToScanner( ps, ps->RegInitDataFifo);
+    ps->SetupMotorRunTable( ps );
+
+    IOSetToMotorRegister( ps );
+
+    ps->pCurrentColorRunTable = ps->pColorRunTable;
+    ps->bCurrentLineCount = 0;
+
+    IOPutOnAllRegisters( ps );
+
+    ps->OpenScanPath( ps );
+
+	/*
+	 * when using the full-step speed on 600 dpi models, then set
+	 * the motor into half-step mode, to avoid that the scanner hits
+	 * the back of its cover
+	 */
+   	if((600 == ps->PhysicalDpi) && (1 == ps->bCurrentSpeed)) {
+
+		ps->Asic96Reg.RD_MotorControl &= ~ps->FullStep;
+	}
+
+ 	IODataToRegister( ps, ps->RegMotorControl,
+					    (Byte)(ps->Asic96Reg.RD_MotorControl & ~ps->MotorOn));
+	IODataToRegister( ps, ps->RegMotorControl, ps->Asic96Reg.RD_MotorControl);
+    IORegisterToScanner( ps, ps->RegInitDataFifo );
+
+    ps->CloseScanPath( ps );
+}
+
+/*.............................................................................
+ * switch the motor off and put the scanner into idle mode
+ */
+static void p48xxPutToIdleMode( pScanData ps )
+{
+    DBG( DBG_LOW, "Putting Scanner (ASIC 96001/3) into Idle-Mode\n" );
+
+    /*
+     * turn off motor
+     */
+	ps->Asic96Reg.RD_MotorControl = 0;
+	IOCmdRegisterToScanner( ps, ps->RegMotorControl, 0 );
+}
+
+/*.............................................................................
+ * for P96001/3 ASIC
+ * do all the preliminary stuff here (calibrate the scanner and move the
+ * sensor to it´s start position, also setup the driver for the
+ * current run)
+ */
+static int p48xxCalibration( pScanData ps )
+{
+	DBG( DBG_LOW, "p48xxCalibration()\n" );
+
+    ps->Scan.bFifoSelect = ps->RegGFifoOffset;
+
+	while (_TRUE) {
+
+		_ASSERT(ps->WaitForShading);
+        if (ps->WaitForShading( ps )) {
+
+        	if(!(ps->DataInf.dwScanFlag & SCANDEF_TPA)) {
+
+/* HEINER:A3I disable !! */
+	               	MotorP96AheadToDarkArea( ps );
+
+                    if( ps->Scan.fRefreshState ) {
+                        ps->Scan.fRefreshState = _FALSE;
+
+          			if (!ps->fReshaded) {
+                        ps->fReshaded = _TRUE;
+
+    	    		    if (ps->fColorMoreRedFlag || ps->fColorMoreBlueFlag) {
+           					continue;
+						}
+    	            }
+	    	  	}
+	   		}
+			break;
+
+	    } else {
+        	ps->fScanningStatus = _FALSE;
+        	ps->DataInf.dwAppLinesPerArea = 0;
+        	return _E_TIMEOUT;
+	    }
+	}
+
+   	if((ps->sCaps.AsicID != _ASIC_IS_96001) &&
+							       (ps->DataInf.wPhyDataType != COLOR_BW)) {
+		DacP96WriteBackToGammaShadingRAM(ps);
+	}
+
+	if( ps->DataInf.dwScanFlag & SCANDEF_TPA ) {
+       	ps->bExtraMotorCtrl     = 0;
+    	ps->Scan.fMotorBackward = _TRUE;
+       	MotorP96ConstantMoveProc( ps, 4000 );
+	}
+
+	/*
+	 * move sensor and setup scanner for grabbing the picture
+	 */
+	_ASSERT(ps->WaitForPositionY);
+   	ps->WaitForPositionY(ps);
+	return _OK;
+}
+
+/************************ exported functions *********************************/
+
+/*.............................................................................
+ * initialize the register values and function calls for the 96001/3 asic
+ */
+_LOC int P48xxInitAsic( pScanData ps )
+{
+	DBG( DBG_LOW, "P48xxInitAsic()\n" );
+
+	ps->IO.bOpenCount = 0;
+
+	ps->RegSwitchBus			= 0;
+	ps->RegReadDataMode			= 1;
+	ps->RegWriteDataMode		= 2;
+	ps->RegEPPEnable			= 3;
+	ps->RegInitDataFifo			= 4;
+	ps->RegForceStep			= 5;
+	ps->RegInitScanState		= 6;
+	ps->RegRefreshScanState		= 7;
+	ps->RegStatus				= 0x10;
+	ps->RegFifoOffset			= 0x11;
+	ps->RegGetScanState			= 0x12;
+	ps->RegAsicID				= 0x13;	/* Determine the asic */
+	ps->RegReadIOBufBus			= 0x17;
+	ps->RegModeControl			= 0x18;
+	ps->RegLineControl			= 0x19;
+	ps->RegScanControl			= 0x1a;
+	ps->RegMotorControl			= 0x1b;
+	ps->RegModelControl			= 0x1c;
+	ps->RegMemAccessControl		= 0x1d;
+	ps->RegDpiLow				= 0x1e;
+	ps->RegDpiHigh				= 0x1f;
+	ps->RegScanPosLow			= 0x20;
+	ps->RegScanPosHigh			= 0x21;
+	ps->RegWidthPixelsLow		= 0x22;
+	ps->RegWidthPixelsHigh		= 0x23;
+	ps->RegThresholdControl		= 0x24;
+	ps->RegWatchDogControl		= 0x25;
+	ps->RegModelControl2		= 0x26;
+	ps->RegThresholdGapControl	= 0x27;
+	ps->RegRedChShadingOffset   = 0x28;
+	ps->RegGreenChShadingOffset = 0x29;
+	ps->RegRedDCAdjust			= 0x27;  /* not sure why these are dup's */
+	ps->RegGreenDCAdjust		= 0x28;
+	ps->RegBlueDCAdjust			= 0x29;
+	ps->RegBlueChShadingOffset	= 0x2a;
+	ps->RegRedChDarkOffset		= 0x2b;
+	ps->RegGreenChDarkOffset	= 0x2c;
+	ps->RegBlueChDarkOffset		= 0x2d;
+	ps->RegWriteIOBusDecode1	= 0x2e;
+	ps->RegWriteIOBusDecode2	= 0x2f;
+	ps->RegScanStateControl		= 0x30;
+	ps->RegRedChEvenOffset		= 0x31;
+	ps->RegGreenChEvenOffset	= 0x32;
+	ps->RegBlueChEvenOffset		= 0x33;
+	ps->RegRedChOddOffset		= 0x34;
+	ps->RegGreenChOddOffset		= 0x35;
+	ps->RegBlueChOddOffset		= 0x36;
+	ps->RegRedGainOutDirect		= 0x37;
+	ps->RegGreenGainOutDirect	= 0x38;
+	ps->RegBlueGainOutDirect	= 0x39;
+	ps->RegLedControl			= 0x3a;
+	ps->RegShadingCorrectCtrl	= 0x3b;
+	ps->RegScanStateBegin		= 0x40;	/* (0, 1)		*/
+	ps->RegScanStateEnd			= 0x5f;	/* (62, 63)     */
+
+	/*
+	 * setup function calls
+	 */
+	ps->ReadWriteTest		   = p48xxReadWriteTest;
+	ps->SetupScannerVariables  = p48xxSetupScannerVariables;
+	ps->SetupScanningCondition = p48xxSetupScanningCondition;
+    ps->PutToIdleMode          = p48xxPutToIdleMode;
+    ps->Calibration            = p48xxCalibration;
+
+	/*
+	 * setup misc
+	 */
+	ps->CtrlReadHighNibble = _CTRL_GENSIGNAL + _CTRL_AUTOLF;
+	ps->CtrlReadLowNibble  = _CTRL_GENSIGNAL + _CTRL_AUTOLF + _CTRL_STROBE;
+
+	ps->MotorFreeRun = 0x80;
+	ps->bLampOn      = _SCAN_LAMP_ON;
+	ps->f97003 	     = _FALSE;
+
+	/*
+	 * initialize the other modules
+	 */
+	return p48xxInitAllModules( ps );
+}
+
+/* END PLUSTEK-PP_P48xx.C ...................................................*/