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-rw-r--r--backend/plustek-usbio.c351
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diff --git a/backend/plustek-usbio.c b/backend/plustek-usbio.c
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+/*.............................................................................
+ * Project : SANE library for Plustek flatbed scanners.
+ *.............................................................................
+ */
+
+/** @file plustek-usbio.c
+ * @brief Some I/O stuff.
+ *
+ * Based on sources acquired from Plustek Inc.<br>
+ * Copyright (C) 2001-2007 Gerhard Jaeger <gerhard@gjaeger.de>
+ *
+ * History:
+ * History:
+ * - 0.40 - starting version of the USB support
+ * - 0.41 - moved some functions to a sane library (sanei_lm983x.c)
+ * - 0.42 - no changes
+ * - 0.43 - no changes
+ * - 0.44 - added dump registers and dumpPic functions
+ * - beautyfied output of ASIC detection
+ * - 0.45 - fixed dumpRegs
+ * - added dimension stuff to dumpPic
+ * - 0.46 - disabled reset prior to the detection of Merlin
+ * - 0.47 - no changes
+ * - 0.48 - cleanup
+ * - 0.49 - no changes
+ * - 0.50 - usbio_DetectLM983x() now returns error if register
+ * could not be red
+ * - usbio_ResetLM983x() checks for reg7 value before writing
+ * - 0.51 - allow dumpRegs to be called without valid fd
+ * - 0.52 - no changes
+ * .
+ * <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 "../include/sane/sanei_usb.h"
+#include "../include/sane/sanei_lm983x.h"
+
+#define _UIO(func) \
+ { \
+ SANE_Status status; \
+ status = func; \
+ if (status != SANE_STATUS_GOOD) { \
+ DBG( _DBG_ERROR, "UIO error\n" ); \
+ return SANE_FALSE; \
+ } \
+ }
+
+#define usbio_ReadReg(fd, reg, value) \
+ sanei_lm983x_read (fd, reg, value, 1, 0)
+
+typedef struct {
+
+ u_char depth;
+ u_long x;
+ u_long y;
+} PicDef, *pPicDef;
+
+static PicDef dPix;
+
+/**
+ */
+static void dumpPic( char* name, SANE_Byte *buffer, u_long len, int is_gray )
+{
+ u_short type;
+ FILE *fp;
+
+ if( DBG_LEVEL < _DBG_DPIC )
+ return;
+
+ if( NULL == buffer ) {
+
+ DBG( _DBG_DPIC, "Creating file '%s'\n", name );
+
+ fp = fopen( name, "w+b" );
+
+ if( NULL != fp ) {
+
+ if( 0 != dPix.x ) {
+
+ if (is_gray)
+ type = 5;
+ else
+ type = 6;
+
+ DBG( _DBG_DPIC, "> X=%lu, Y=%lu, depth=%u\n",
+ dPix.x, dPix.y, dPix.depth );
+ if( dPix.depth > 8 )
+ fprintf( fp, "P%u\n%lu %lu\n65535\n", type, dPix.x, dPix.y);
+ else
+ fprintf( fp, "P%u\n%lu %lu\n255\n", type, dPix.x, dPix.y);
+ }
+ }
+ } else {
+ fp = fopen( name, "a+b" );
+ }
+
+ if( NULL == fp ) {
+ DBG( _DBG_DPIC, "Can not open file '%s'\n", name );
+ return;
+ }
+
+ fwrite( buffer, 1, len, fp );
+ fclose( fp );
+}
+
+/**
+ */
+static void dumpPicInit( ScanParam *sd, char* name )
+{
+ dPix.x = sd->Size.dwPhyBytes;
+
+ if( sd->bDataType == SCANDATATYPE_Color )
+ dPix.x /= 3;
+
+ if( sd->bBitDepth > 8 )
+ dPix.x /= 2;
+
+ dPix.y = sd->Size.dwLines;
+ dPix.depth = sd->bBitDepth;
+
+ if( sd->bDataType == SCANDATATYPE_Color )
+ dumpPic(name, NULL, 0, 0);
+ else
+ dumpPic(name, NULL, 0, 1);
+}
+
+/**
+ * dump the LM983x registers
+ */
+static void dumpregs( int fd, SANE_Byte *cmp )
+{
+ char buf[256], b2[10];
+ SANE_Byte regs[0x80];
+ int i;
+
+ if( DBG_LEVEL < _DBG_DREGS )
+ return;
+
+ buf[0] = '\0';
+
+ if( fd >= 0 ) {
+ usbio_ReadReg(fd, 0x01, &regs[0x01]);
+ usbio_ReadReg(fd, 0x02, &regs[0x02]);
+ usbio_ReadReg(fd, 0x03, &regs[0x03]);
+ usbio_ReadReg(fd, 0x04, &regs[0x04]);
+ usbio_ReadReg(fd, 0x07, &regs[0x07]);
+
+ sanei_lm983x_read( fd, 0x08, &regs[0x8], 0x80-0x8, SANE_TRUE );
+
+ for( i = 0x0; i < 0x80; i++ ) {
+
+ if((i%16) ==0 ) {
+
+ if( buf[0] )
+ DBG( _DBG_DREGS, "%s\n", buf );
+ sprintf( buf, "0x%02x:", i );
+ }
+
+ if((i%8)==0)
+ strcat( buf, " ");
+
+ /* the dataport read returns with "0 Bytes read", of course. */
+ if((i == 0) || (i == 5) || (i == 6))
+ strcat( buf, "XX ");
+ else {
+
+ sprintf( b2, "%02x ", regs[i]);
+ strcat( buf, b2 );
+ }
+ }
+ DBG( _DBG_DREGS, "%s\n", buf );
+ }
+
+ if( cmp ) {
+
+ buf[0] = '\0';
+
+ DBG( _DBG_DREGS, "Internal setting:\n" );
+ for( i = 0x0; i < 0x80; i++ ) {
+
+ if((i%16) ==0 ) {
+
+ if( buf[0] )
+ DBG( _DBG_DREGS, "%s\n", buf );
+ sprintf( buf, "0x%02x:", i );
+ }
+
+ if((i%8)==0)
+ strcat( buf, " ");
+
+ if((i == 0) || (i == 5) || (i == 6))
+ strcat( buf, "XX ");
+ else {
+ sprintf( b2, "%02x ", cmp[i]);
+ strcat( buf, b2 );
+ }
+ }
+ DBG( _DBG_DREGS, "%s\n", buf );
+ }
+}
+
+/**
+ * function to read the contents of a LM983x register and regarding some
+ * extra stuff, like flushing register 2 when writing register 0x58, etc
+ *
+ * @param handle -
+ * @param reg -
+ * @param value -
+ * @return
+ */
+static SANE_Bool usbio_WriteReg( SANE_Int handle,
+ SANE_Byte reg, SANE_Byte value )
+{
+ int i;
+ SANE_Byte data;
+
+ /* retry loop... */
+ for( i = 0; i < 100; i++ ) {
+
+ sanei_lm983x_write_byte( handle, reg, value );
+
+ /* Flush register 0x02 when register 0x58 is written */
+ if( 0x58 == reg ) {
+ _UIO( usbio_ReadReg( handle, 2, &data ));
+ _UIO( usbio_ReadReg( handle, 2, &data ));
+ }
+
+ if( reg != 7 )
+ return SANE_TRUE;
+
+ /* verify register 7 */
+ _UIO( usbio_ReadReg( handle, 7, &data ));
+ if( data == value ) {
+ return SANE_TRUE;
+ }
+ }
+
+ return SANE_FALSE;
+}
+
+/** try and read register 0x69 from a LM983x to find out which version we have.
+ */
+static SANE_Status usbio_DetectLM983x( SANE_Int fd, SANE_Byte *version )
+{
+ char buf[256];
+ SANE_Byte value;
+ SANE_Status res;
+
+ DBG( _DBG_INFO, "usbio_DetectLM983x\n");
+
+ res = usbio_ReadReg(fd, 0x69, &value);
+ if( res != SANE_STATUS_GOOD ) {
+ DBG( _DBG_ERROR, " * could not read version register!\n");
+ return res;
+ }
+
+ value &= 7;
+ if (version)
+ *version = value;
+
+ res = SANE_STATUS_GOOD;
+
+ sprintf( buf, "usbio_DetectLM983x: found " );
+
+ switch((SANE_Int)value ) {
+
+ case 4: strcat( buf, "LM9832/3" ); break;
+ case 3: strcat( buf, "LM9831" ); break;
+ case 2: strcat( buf, "LM9830 --> unsupported!!!" );
+ res = SANE_STATUS_INVAL;
+ break;
+ default: DBG( _DBG_INFO, "Unknown chip v%d", value );
+ res = SANE_STATUS_INVAL;
+ break;
+ }
+
+ DBG( _DBG_INFO, "%s\n", buf );
+ return res;
+}
+
+/** well, this is more or less a reset function, for LM9831 based devices
+ * we issue a real reset command, while for LM9832/3 based devices, checking
+ * and resetting register 7 will be enough...
+ */
+static SANE_Status usbio_ResetLM983x( Plustek_Device *dev )
+{
+ SANE_Byte value;
+ HWDef *hw = &dev->usbDev.HwSetting;
+
+ if( _LM9831 == hw->chip ) {
+
+ DBG( _DBG_INFO," * resetting LM9831 device!\n");
+ _UIO( sanei_lm983x_write_byte( dev->fd, 0x07, 0));
+ _UIO( sanei_lm983x_write_byte( dev->fd, 0x07,0x20));
+ _UIO( sanei_lm983x_write_byte( dev->fd, 0x07, 0));
+ _UIO( usbio_ReadReg( dev->fd, 0x07, &value));
+ if (value != 0) {
+ DBG( _DBG_ERROR, "usbio_ResetLM983x: reset was not "
+ "successful, status=%d\n", value );
+ return SANE_STATUS_INVAL;
+ }
+
+ } else {
+ _UIO( usbio_ReadReg( dev->fd, 0x07, &value));
+ if (value != 0 ) {
+ DBG( _DBG_INFO," * setting device to idle state!\n");
+ _UIO( sanei_lm983x_write_byte( dev->fd, 0x07, 0));
+ }
+ }
+ return SANE_STATUS_GOOD;
+}
+
+/* END PLUSTEK-USBIO.C ......................................................*/
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