Initial import of sane-backends version 1.0.24-1.2

1 files changed, 263 insertions, 0 deletions

diff --git a/backend/gt68xx_gt6816.c b/backend/gt68xx_gt6816.c
new file mode 100644
index 0000000..045194a
--- /dev/null
+++ b/backend/gt68xx_gt6816.c
@@ -0,0 +1,263 @@
+/* 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;
+}