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-rw-r--r--backend/gt68xx_gt6816.c263
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diff --git a/backend/gt68xx_gt6816.c b/backend/gt68xx_gt6816.c
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+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2002 Sergey Vlasov <vsu@altlinux.ru>
+ 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 gt6816 specific functions.
+ */
+
+#include "gt68xx_gt6816.h"
+
+SANE_Status
+gt6816_check_firmware (GT68xx_Device * dev, SANE_Bool * loaded)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x70;
+ req[1] = 0x01;
+
+ status = gt68xx_device_small_req (dev, req, req);
+ if (status != SANE_STATUS_GOOD)
+ {
+ /* Assume that firmware is not loaded because without firmware, we need
+ 64 bytes for the result, not 8 */
+ *loaded = SANE_FALSE;
+ return SANE_STATUS_GOOD;
+ }
+ /* check anyway */
+ if (req[0] == 0x00 && req[1] == 0x70 && req[2] == 0xff)
+ *loaded = SANE_TRUE;
+ else
+ *loaded = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+#define MAX_DOWNLOAD_BLOCK_SIZE 64
+
+SANE_Status
+gt6816_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, "gt6816_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, addr, block_size, check_buf));
+ if (memcmp (block, check_buf, block_size) != 0)
+ {
+ DBG (3, "gt6816_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] = LOBYTE (addr);
+ boot_req[3] = HIBYTE (addr);
+ RIE (gt68xx_device_req (dev, boot_req, boot_req));
+
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+gt6816_get_power_status (GT68xx_Device * dev, SANE_Bool * power_ok)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x3f;
+ req[1] = 0x01;
+
+ RIE (gt68xx_device_req (dev, req, req));
+
+ if ((req[0] == 0x00 && req[1] == 0x3f && req[2] == 0x01)
+ || (dev->model->flags & GT68XX_FLAG_NO_POWER_STATUS))
+ *power_ok = SANE_TRUE;
+ else
+ *power_ok = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+gt6816_get_ta_status (GT68xx_Device * dev, SANE_Bool * ta_attached)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x28;
+ req[1] = 0x01;
+
+ RIE (gt68xx_device_req (dev, req, req));
+
+ if (req[0] == 0x00 && req[1] == 0x28 && (req[8] & 0x01) != 0
+ && !dev->model->is_cis)
+ *ta_attached = SANE_TRUE;
+ else
+ *ta_attached = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+gt6816_lamp_control (GT68xx_Device * dev, SANE_Bool fb_lamp,
+ SANE_Bool ta_lamp)
+{
+ 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);
+}
+
+
+SANE_Status
+gt6816_is_moving (GT68xx_Device * dev, SANE_Bool * moving)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x17;
+ req[1] = 0x01;
+
+ RIE (gt68xx_device_req (dev, req, req));
+
+ if (req[0] == 0x00 && req[1] == 0x17)
+ {
+ if (req[2] == 0 && (req[3] == 0 || req[3] == 2))
+ *moving = SANE_FALSE;
+ else
+ *moving = SANE_TRUE;
+ }
+ else
+ return SANE_STATUS_IO_ERROR;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+gt6816_carriage_home (GT68xx_Device * dev)
+{
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x24;
+ req[1] = 0x01;
+
+ return gt68xx_device_req (dev, req, req);
+}
+
+
+SANE_Status
+gt6816_stop_scan (GT68xx_Device * dev)
+{
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x41;
+ req[1] = 0x01;
+
+ return gt68xx_device_small_req (dev, req, req);
+}
+
+SANE_Status
+gt6816_document_present (GT68xx_Device * dev, SANE_Bool * present)
+{
+ SANE_Status status;
+ GT68xx_Packet req;
+
+ memset (req, 0, sizeof (req));
+ req[0] = 0x59;
+ req[1] = 0x01;
+
+ RIE (gt68xx_device_req (dev, req, req));
+
+ if (req[0] == 0x00 && req[1] == 0x59)
+ {
+ if (req[2] == 0)
+ *present = SANE_FALSE;
+ else
+ *present = SANE_TRUE;
+ }
+ else
+ return SANE_STATUS_IO_ERROR;
+
+ return SANE_STATUS_GOOD;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 17:53:18 +0000