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diff --git a/backend/gt68xx_gt6801.c b/backend/gt68xx_gt6801.c
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+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2002 Sergey Vlasov <vsu@altlinux.ru>
+ GT6801 support by Andreas Nowack <nowack.andreas@gmx.de>
+ Copyright (C) 2002-2007 Henning Geinitz <sane@geinitz.org>
+
+ 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.
+*/
+
+/** @file
+ * @brief Implementation of the GT6801 specific functions.
+ */
+
+#include "gt68xx_gt6801.h"
+
+/* doesn't work with plustek scanner */
+SANE_Status
+gt6801_check_firmware (GT68xx_Device * dev, SANE_Bool * loaded)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x50;
+ req[1] = 0x01;
+ req[2] = 0x80;
+
+ RIE (gt68xx_device_req (dev, req, req));
+
+ if (req[0] == 0x00 && req[1] == 0x50)
+ *loaded = SANE_TRUE;
+ else
+ *loaded = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+/* doesn't work with at least cytron scanner */
+SANE_Status
+gt6801_check_plustek_firmware (GT68xx_Device * dev, SANE_Bool * loaded)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+
+ req[0] = 0x73;
+ req[1] = 0x01;
+
+ status = gt68xx_device_small_req (dev, req, req);
+ if (status != SANE_STATUS_GOOD)
+ {
+ /* Assume that firmware is not loaded */
+ *loaded = SANE_FALSE;
+ return SANE_STATUS_GOOD;
+ }
+
+ /* check for correct answer */
+ if ((req[0] == 0) && (req[1] == 0x12) && (req[3] == 0x80))
+ /* req[3] is 0 if fw is not loaded, if loaded it's 0x80
+ * at least on my 1284u (gerhard@gjaeger.de)
+ *
+ * With the Genius scanners req[3] is 0x02/0x82. (hmg)
+ */
+ *loaded = SANE_TRUE;
+ else
+ *loaded = SANE_FALSE;
+
+ /* Until I find out if testing for req[3] & 0x80 is save, load the firmware
+ everytime */
+ *loaded = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+#define MAX_DOWNLOAD_BLOCK_SIZE 64
+
+SANE_Status
+gt6801_download_firmware (GT68xx_Device * dev,
+ SANE_Byte * data, SANE_Word size)
+{
+ SANE_Status status;
+ SANE_Byte download_buf[MAX_DOWNLOAD_BLOCK_SIZE];
+ SANE_Byte check_buf[MAX_DOWNLOAD_BLOCK_SIZE];
+ SANE_Byte *block;
+ SANE_Word addr, bytes_left;
+ GT68xx_Packet boot_req;
+ SANE_Word block_size = MAX_DOWNLOAD_BLOCK_SIZE;
+
+ CHECK_DEV_ACTIVE (dev, "gt6801_download_firmware");
+
+ for (addr = 0; addr < size; addr += block_size)
+ {
+ bytes_left = size - addr;
+ if (bytes_left > block_size)
+ block = data + addr;
+ else
+ {
+ memset (download_buf, 0, block_size);
+ memcpy (download_buf, data + addr, bytes_left);
+ block = download_buf;
+ }
+ RIE (gt68xx_device_memory_write (dev, addr, block_size, block));
+ RIE (gt68xx_device_memory_read (dev, 0x3f00, block_size, check_buf));
+
+ /*
+ * For GT6816 this was:
+ * if (memcmp (block, check_buf, block_size) != 0) ...
+ * Apparently the GT6801 does something different...
+ *
+ * hmg: For my BP 1200 CU the result is 00 09 so maybe only the 0 is
+ * relevant?
+ */
+ if ((check_buf[0] != 0) && (check_buf[1] != 0x40))
+ {
+ DBG (3, "gt6801_download_firmware: mismatch at block 0x%0x\n",
+ addr);
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ memset (boot_req, 0, sizeof (boot_req));
+ boot_req[0] = 0x69;
+ boot_req[1] = 0x01;
+ boot_req[2] = 0xc0;
+ boot_req[3] = 0x1c;
+ RIE (gt68xx_device_req (dev, boot_req, boot_req));
+
+#if 0
+ /* hmg: the following isn't in my log: */
+ memset (boot_req, 0, sizeof (boot_req)); /* I don't know if this is needed */
+ boot_req[0] = 0x01;
+ boot_req[1] = 0x01;
+ RIE (gt68xx_device_small_req (dev, boot_req, boot_req));
+#endif
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+gt6801_get_power_status (GT68xx_Device * dev, SANE_Bool * power_ok)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x10;
+ req[1] = 0x01;
+
+ RIE (gt68xx_device_req (dev, req, req));
+
+ /* I don't know what power_ok = SANE_FALSE looks like... */
+ /* hmg: let's assume it's different from the usual 00 10 */
+ if (gt68xx_device_check_result (req, 0x10) == SANE_STATUS_GOOD)
+ *power_ok = SANE_TRUE;
+ else
+ *power_ok = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+gt6801_lamp_control (GT68xx_Device * dev, SANE_Bool fb_lamp,
+ SANE_Bool ta_lamp)
+{
+ if (!dev->model->is_cis)
+ {
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x25;
+ req[1] = 0x01;
+ req[2] = 0;
+ if (fb_lamp)
+ req[2] |= 0x01;
+ if (ta_lamp)
+ req[2] |= 0x02;
+ return gt68xx_device_req (dev, req, req);
+ }
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+gt6801_is_moving (GT68xx_Device * dev, SANE_Bool * moving)
+{
+ /* this seems not to be supported by the scanner */
+ (void) dev;
+
+ *moving = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+gt6801_carriage_home (GT68xx_Device * dev)
+{
+ GT68xx_Packet req;
+ SANE_Status status;
+
+ memset (req, 0, sizeof (req));
+
+ if (dev->model->flags & GT68XX_FLAG_MOTOR_HOME)
+ {
+ req[0] = 0x34;
+ req[1] = 0x01;
+ status = gt68xx_device_req (dev, req, req);
+ }
+ else
+ {
+ req[0] = 0x12;
+ req[1] = 0x01;
+ if ((status = gt68xx_device_req (dev, req, req)) == SANE_STATUS_GOOD)
+ {
+ RIE (gt68xx_device_check_result (req, 0x12));
+ memset (req, 0, sizeof (req));
+ req[0] = 0x24;
+ req[1] = 0x01;
+ status = gt68xx_device_req (dev, req, req);
+ RIE (gt68xx_device_check_result (req, 0x24));
+ }
+ }
+ return status;
+}
+
+
+SANE_Status
+gt6801_stop_scan (GT68xx_Device * dev)
+{
+ GT68xx_Packet req;
+ SANE_Status status;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x42;
+ req[1] = 0x01;
+
+ RIE (gt68xx_device_req (dev, req, req));
+ RIE (gt68xx_device_check_result (req, 0x42));
+ return SANE_STATUS_GOOD;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 11:33:39 +0000