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sane-project-backends/backend/plustek-pp_detect.c

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14 KiB
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/*.............................................................................
* Project : linux driver for Plustek parallel-port scanners
*.............................................................................
* File: plustek-pp_detect.c - automatic scanner detection
*.............................................................................
*
* based on sources acquired from Plustek Inc.
* Copyright (C) 1998 Plustek Inc.
* Copyright (C) 2000-2003 Gerhard Jaeger <gerhard@gjaeger.de>
* also based on the work done by Rick Bronson
*.............................................................................
* History:
* 0.30 - initial version
* 0.31 - no changes
* 0.32 - no changes
* 0.33 - added portmode check
* 0.34 - no changes
* 0.35 - no changes
* 0.36 - added some debug messages
* replace the old _OUTB/_INB macros
* 0.37 - cosmetic changes
* added speed-test for the parallel-port
* 0.38 - added P12 stuff - replaced detectP9636 by detectAsic9800x
* added detectResetPort() function
* 0.39 - fixed problem in ASIC9800x detection
* 0.40 - no changes
* 0.41 - no changes
* 0.42 - changed include names
*
*.............................................................................
*
* 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.
*/
#include "plustek-pp_scan.h"
/************************** local definitions ********************************/
/*************************** local functions *********************************/
/*.............................................................................
* as the name says...
*/
static void detectResetPort( pScanData ps )
{
UChar control;
control = _INB_CTRL( ps );
_DO_UDELAY( 2 );
_OUTB_CTRL( ps, _CTRL_RESERVED ); /* reset, 0xc0 */
_DO_UDELAY( 2 );
_OUTB_CTRL( ps, control ); /* and restore... */
_DO_UDELAY( 2 );
}
/*.............................................................................
* Check will the status port changed between printer/scanner path changed?
* Write out data and read in to compare
*/
static int detectScannerConnection( pScanData ps )
{
UChar data, control, status;
int retval = _E_NO_CONN;
DBG( DBG_LOW, "Dataport = 0x%04x\n", ps->IO.pbSppDataPort );
DBG( DBG_LOW, "Ctrlport = 0x%04x\n", ps->IO.pbControlPort );
detectResetPort( ps );
/*
* as we<77>re called during InitPorts, we can be sure
* to operate in EPP-mode (hopefuly ;-)
*/
control = _INB_CTRL( ps );
/*
* go ahead and do some checks
*/
_OUTB_CTRL( ps, _CTRL_GENSIGNAL );
_DO_UDELAY( 5 );
_OUTB_DATA( ps, 0x55 );
_DO_UDELAY( 5 );
data = _INB_DATA( ps );
if (0x55 == data) {
DBG( DBG_HIGH, "Test 0x55\n" );
_OUTB_DATA( ps, 0xAA );
_DO_UDELAY( 5 );
data = _INB_DATA( ps );
if (0xAA == data) {
DBG( DBG_HIGH, "Test 0xAA\n" );
_OUTB_DATA( ps, 0x0 );
_DO_UDELAY( 5 );
data = _INB_STATUS( ps );
ps->OpenScanPath( ps );
_OUTB_DATA( ps, 0x0 );
_DO_UDELAY( 5 );
status = _INB_STATUS( ps );
ps->CloseScanPath( ps );
/*
* so we<77>re done <20>til now...
*/
DBG( DBG_HIGH, "Compare data=0x%x and status=0x%x, port=0x%x\n",
data, status, ps->IO.portBase );
if( data != status ) {
_ASSERT( ps->ReadWriteTest );
/*
* here we try to detect the operation speed of our
* parallel port
* if we have tested all the stuff and had no success, retval
* will contain the error-code
*/
for( ps->IO.delay = 0; ps->IO.delay < 5; ps->IO.delay++ ) {
retval = ps->ReadWriteTest( ps );
/* break on OK or when the ASIC detection fails */
if((_OK == retval) || (_E_NO_ASIC == retval))
break;
}
}
}
}
/*
* work on the result
*/
if ( _OK == retval ) {
ps->sCaps.wIOBase = ps->IO.pbSppDataPort;
ps->PutToIdleMode( ps );
} else {
ps->sCaps.wIOBase = _NO_BASE;
}
/*
* restore control port value
*/
_OUTB_CTRL( ps, control );
_DO_UDELAY( 5 );
DBG( DBG_HIGH, "detectScannerConnection() returns %i.\n", retval );
return retval;
}
/*.............................................................................
* we need some memory...
*/
static int detectSetupBuffers( pScanData ps )
{
DBG( DBG_LOW, "*** setupBuffers ***\n" );
/*
* bad news ?
*/
if ( 0 == ps->TotalBufferRequire ) {
#ifdef __KERNEL__
_PRINT(
#else
DBG( DBG_HIGH,
#endif
"pt_drv: asic 0x%x probably not supported\n", ps->sCaps.AsicID);
return _E_ALLOC; /* Out of memory */
} else {
/*
* allocate and clear
*/
DBG(DBG_LOW,"Driverbuf(%lu bytes) needed !\n", ps->TotalBufferRequire);
ps->driverbuf = (pUChar)_VMALLOC(ps->TotalBufferRequire);
if ( NULL == ps->driverbuf ) {
#ifdef __KERNEL__
_PRINT(
#else
DBG( DBG_HIGH,
#endif
"pt_drv: Not enough kernel memory %ld\n",
ps->TotalBufferRequire);
return _E_ALLOC; /* Out of memory */
}
memset( ps->driverbuf, 0, ps->TotalBufferRequire );
}
ps->pPrescan16 = ps->driverbuf;
ps->pPrescan8 = ps->pPrescan16 + ps->BufferFor1stColor;
ps->pScanBuffer1 = ps->pPrescan8 + ps->BufferFor2ndColor;
/* CHECK: Should we adjust that !!!
*/
ps->pEndBufR = ps->pPrescan8;
ps->pEndBufG = ps->pScanBuffer1;
ps->pColorRunTable = ps->pScanBuffer1 + ps->BufferForDataRead1;
DBG( DBG_LOW, "pColorRunTab = 0x%0lx - 0x%0lx\n",
(ULong)ps->pColorRunTable,
(ULong)((pUChar)ps->driverbuf + ps->TotalBufferRequire));
if ( _ASIC_IS_98001 == ps->sCaps.AsicID ) {
DBG( DBG_LOW, "Adjust for 98001 ASIC\n" );
ps->pScanBuffer2 = ps->pPrescan16;
ps->pScanBuffer1 = ps->pScanBuffer2 + _LINE_BUFSIZE1;
ps->pColorRunTable = ps->pScanBuffer1 + _LINE_BUFSIZE * 2UL;
ps->pProcessingBuf = ps->pColorRunTable + ps->BufferForColorRunTable;
DBG( DBG_LOW, "sb2 = 0x%lx, sb1 = 0x%lx, Color = 0x%lx\n",
(ULong)ps->pScanBuffer2, (ULong)ps->pScanBuffer1,
(ULong)ps->pColorRunTable );
DBG( DBG_LOW, "Pro = 0x%lx, size = %ld\n",
(ULong)ps->pProcessingBuf, ps->TotalBufferRequire );
ps->dwShadow = (_DEF_BRIGHTEST_SKIP + _DEF_DARKEST_SKIP) * 5400UL * 2UL * 3UL;
ps->Shade.pHilight = _VMALLOC( ps->dwShadow );
if ( NULL != ps->Shade.pHilight ) {
memset( ps->Shade.pHilight, 0, ps->dwShadow );
ps->dwHilight = _DEF_BRIGHTEST_SKIP * 5400UL * 3UL;
ps->dwShadow = _DEF_DARKEST_SKIP * 5400UL * 3UL;
ps->pwShadow = (pUShort)ps->Shade.pHilight + ps->dwHilight;
ps->Shade.dwDiv = 32UL - _DEF_BRIGHTEST_SKIP - _DEF_DARKEST_SKIP;
ps->dwHilightCh = ps->dwHilight / 3UL;
ps->dwShadowCh = ps->dwShadow / 3UL;
}
} else if ( _ASIC_IS_98003 == ps->sCaps.AsicID ) {
DBG( DBG_LOW, "Adjust for 98003 ASIC\n" );
ps->Bufs.b1.pReadBuf = ps->driverbuf;
ps->Bufs.b2.pSumBuf = ps->Bufs.b1.pReadBuf + _SizeDataBuf;
ps->Bufs.TpaBuf.pb = &((pUChar)ps->Bufs.b2.pSumBuf)[_SizeShadingSumBuf];
/* CHECK: We might should play around with these values... */
ps->Shade.skipHilight = _DEF_BRIGHTEST_SKIP;
ps->Shade.skipShadow = _DEF_DARKEST_SKIP;
if( ps->Shade.skipHilight && ps->Shade.skipShadow ) {
ULong skipSize;
skipSize = (ULong)((ps->Shade.skipHilight + ps->Shade.skipShadow)
* _SizeDataBuf * 3);
ps->Shade.pHilight = _VMALLOC( skipSize );
if( NULL != ps->Shade.pHilight ) {
ps->Shade.dwDiv = (ULong)(32UL - ps->Shade.skipHilight -
ps->Shade.skipShadow);
}
} else
ps->Shade.pHilight = NULL;
}
return _OK;
}
/*.............................................................................
* model 48xx detection or any other model using the 96001/3 ASIC
*/
static int detectP48xx( pScanData ps )
{
int result;
DBG( DBG_LOW, "************ DETECTP48xx ************\n" );
/* increase the delay-time */
ps->IO.delay = 4;
ModelSet4800( ps );
result = P48xxInitAsic( ps );
if( _OK != result )
return result;
return detectScannerConnection( ps );
}
/*.............................................................................
* ASIC 98003 model detection
*/
static int detectAsic98003( pScanData ps )
{
int result;
DBG( DBG_LOW, "************* ASIC98003 *************\n" );
/* increase the delay-time */
ps->IO.delay = 4;
ModelSetP12( ps );
result = P12InitAsic( ps );
if( _OK != result )
return result;
IOSoftwareReset( ps );
return detectScannerConnection( ps );
}
/*.............................................................................
* ASIC 98001 model detection
*/
static int detectAsic98001( pScanData ps )
{
int result;
DBG( DBG_LOW, "************* ASIC98001 *************\n" );
/* increase the delay-time */
ps->IO.delay = 4;
ModelSet9636( ps );
result = P9636InitAsic( ps );
#ifndef _ASIC_98001_SIM
if( _OK != result )
return result;
return detectScannerConnection( ps );
#else
#ifdef __KERNEL__
_PRINT(
#else
DBG( DBG_HIGH,
#endif
"!!!! WARNING, have a look at function detectAsic98001() !!!!\n" );
ps->sCaps.AsicID = _ASIC_IS_98001;
ps->sCaps.wIOBase = ps->IO.pbSppDataPort;
return _OK;
#endif
}
/************************ exported functions *********************************/
/*.............................................................................
* here we try to find the scanner, depending on the mode
*/
int DetectScanner( pScanData ps, int mode )
{
Byte asic;
int result = _E_INTERNAL;
/*
* before doing anything else, check the port-mode
*/
if((ps->IO.portMode != _PORT_EPP) && (ps->IO.portMode != _PORT_SPP) &&
(ps->IO.portMode != _PORT_BIDI)) {
DBG( DBG_LOW, "!!! Portmode (%u)not supported !!!\n", ps->IO.portMode );
return _E_INTERNAL;
}
/*
* autodetection ?
*/
if( 0 == mode ) {
DBG( DBG_HIGH, "Starting Scanner-Autodetection\n" );
/*
* try to find a 48xx Scanner
* (or even a scanner based on the 96001/3) ASIC
*/
result = detectP48xx( ps );
if( _OK != result ) {
DBG( DBG_LOW, "************* ASIC9800x *************\n" );
/*
* get the ASIC ID by using the OpenScanPath stuff from Asic9600x based
* models - only difference: change the ReadHigh/ReadLow signals before
*/
ps->CtrlReadHighNibble = _CTRL_GENSIGNAL+_CTRL_AUTOLF+_CTRL_STROBE;
ps->CtrlReadLowNibble = _CTRL_GENSIGNAL+_CTRL_AUTOLF;
/* read Register 0x18 (AsicID Register) of Asic9800x based devices */
#ifdef _ASIC_98001_SIM
#ifdef __KERNEL__
_PRINT(
#else
DBG( DBG_HIGH,
#endif
"!!!! WARNING, SW-Emulation active !!!!\n" );
asic = _ASIC_IS_98001;
#else
detectResetPort( ps );
/* do some presettings to make IODataRegisterFromScanner() work */
ps->RegAsicID = 0x18;
ps->IO.useEPPCmdMode = _FALSE;
ps->sCaps.AsicID = _ASIC_IS_98001;
IOInitialize( ps );
asic = IODataRegisterFromScanner( ps, ps->RegAsicID );
DBG( DBG_HIGH, "ASIC = 0x%02X\n", asic );
#endif
/* depending on what we have found, perform some extra tests */
switch( asic ) {
case _ASIC_IS_98001:
result = detectAsic98001( ps );
break;
case _ASIC_IS_98003:
/* as the reading of the ASIC ID causes trouble,
* we reset the device
*/
ps->IO.useEPPCmdMode = _FALSE;
ps->sCaps.AsicID = _ASIC_IS_98003;
IOInitialize( ps );
IOSoftwareReset( ps );
result = detectAsic98003( ps );
break;
default:
DBG( DBG_HIGH, "Unknown ASIC-ID\n" );
result = _E_NO_DEV;
break;
}
}
} else {
/* this will be called each time before operating on a previously
* detected device, to make sure we're already operating on the same one
*/
if( _ASIC_IS_98001 == mode ) {
DBG( DBG_HIGH, "Starting Scanner-detection (ASIC 98001)\n" );
result = detectAsic98001( ps );
} else if( _ASIC_IS_98003 == mode ) {
DBG( DBG_HIGH, "Starting Scanner-detection (ASIC 98003)\n" );
result = detectAsic98003( ps );
} else {
DBG( DBG_HIGH, "Starting Scanner-detection (ASIC 96001/3)\n" );
result = detectP48xx( ps );
}
}
if( _OK == result ) {
_ASSERT( ps->SetupScannerVariables );
ps->SetupScannerVariables( ps );
detectSetupBuffers( ps );
} else {
/* CHECK - we should not need that anymore - paranoia code ??!!!!
*/
ps->sCaps.wIOBase = _NO_BASE;
}
DBG( DBG_LOW, "*** DETECTION DONE, result: %i ***\n", result );
return result;
}
/* END PLUSTEK-PP_DETECT.C ..................................................*/
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