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Diffstat (limited to 'sanei/sanei_pv8630.c')
| -rw-r--r-- | sanei/sanei_pv8630.c | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/sanei/sanei_pv8630.c b/sanei/sanei_pv8630.c new file mode 100644 index 0000000..848558e --- /dev/null +++ b/sanei/sanei_pv8630.c @@ -0,0 +1,223 @@ +/* sane - Scanner Access Now Easy. + + Copyright (C) 2000 Adrian Perez Jorge + Copyright (C) 2001 Frank Zago + Copyright (C) 2001 Marcio Teixeira + + 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. + + Interface files for the PowerVision 8630 chip, a USB to + parallel converter used in many scanners. + + */ + +#include "../include/sane/config.h" + +#include <stdlib.h> +#include <unistd.h> + +#define BACKEND_NAME sanei_pv8630 +#include "../include/sane/sane.h" +#include "../include/sane/sanei_debug.h" +#include "../include/sane/sanei_usb.h" +#include "../include/sane/sanei_pv8630.h" + +#define DBG_error 1 +#define DBG_info 5 + +void +sanei_pv8630_init (void) +{ + DBG_INIT(); +} + +/* Write one control byte */ +SANE_Status +sanei_pv8630_write_byte (int fd, SANEI_PV_Index index, SANE_Byte byte) +{ + SANE_Status status; + + DBG(DBG_info, "sanei_pv8630_write_byte - index=%d, byte=%d\n", index, byte); + status = + sanei_usb_control_msg (fd, 0x40, PV8630_REQ_WRITEBYTE, byte, index, 0, + NULL); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_write_byte error\n"); + return status; +} + +/* Read one control byte */ +SANE_Status +sanei_pv8630_read_byte (int fd, SANEI_PV_Index index, SANE_Byte * byte) +{ + SANE_Status status; + + DBG(DBG_info, "sanei_pv8630_read_byte - index=%d, byte=%p\n", index, byte); + + status = + sanei_usb_control_msg (fd, 0xc0, PV8630_REQ_READBYTE, 0, index, 1, byte); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_read_byte error\n"); + return status; +} + +/* Prepare a bulk read. len is the size of the data going to be + * read by pv8630_bulkread(). */ +SANE_Status +sanei_pv8630_prep_bulkread (int fd, int len) +{ + SANE_Status status; + + status = + sanei_usb_control_msg (fd, 0x40, PV8630_REQ_EPPBULKREAD, len & 0xffff, + len >> 16, 0, NULL); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_prep_bulkread error\n"); + return status; +} + +/* Prepare a bulk write. len is the size of the data going to be + * written by pv8630_bulkwrite(). */ +SANE_Status +sanei_pv8630_prep_bulkwrite (int fd, int len) +{ + SANE_Status status; + + status = + sanei_usb_control_msg (fd, 0x40, PV8630_REQ_EPPBULKWRITE, len & 0xffff, + len >> 16, 0, NULL); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_prep_bulkwrite error\n"); + return status; +} + +/* Flush the buffer. */ +SANE_Status +sanei_pv8630_flush_buffer (int fd) +{ + SANE_Status status; + + status = + sanei_usb_control_msg (fd, 0x40, PV8630_REQ_FLUSHBUFFER, 0, 0, 0, NULL); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_flush_buffer error\n"); + return status; +} + +/* Do a bulk write. The length must have previously been sent via + * pv8630_prep_bulkwrite(). */ +SANE_Status +sanei_pv8630_bulkwrite (int fd, const void *data, size_t * len) +{ + SANE_Status status; + + status = sanei_usb_write_bulk (fd, (const SANE_Byte *) data, len); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_bulkwrite error\n"); + return status; +} + +/* Do a bulk read. The length must have previously been sent via + * pv8630_prep_bulkread(). */ +SANE_Status +sanei_pv8630_bulkread (int fd, void *data, size_t * len) +{ + SANE_Status status; + + status = sanei_usb_read_bulk (fd, data, len); + + if (status != SANE_STATUS_GOOD) + DBG (DBG_error, "sanei_pv8630_bulkread error\n"); + return status; +} + +/* Expects a specific byte in a register */ +SANE_Status +sanei_pv8630_xpect_byte (int fd, SANEI_PV_Index index, SANE_Byte value, + SANE_Byte mask) +{ + SANE_Status status; + SANE_Byte s; + + status = sanei_pv8630_read_byte (fd, index, &s); + if (status != SANE_STATUS_GOOD) + return status; + + if ((s & mask) != value) + { + DBG (DBG_error, "sanei_pv8630_xpect_byte: expected %x, got %x\n", value, + s); + return SANE_STATUS_IO_ERROR; + } + return SANE_STATUS_GOOD; +} + +/* Wait for the status register to present a given status. A timeout value + is given in tenths of a second. */ +SANE_Status +sanei_pv8630_wait_byte (int fd, SANEI_PV_Index index, SANE_Byte value, + SANE_Byte mask, int timeout) +{ + SANE_Status status; + SANE_Byte s; + int n; + + for (n = 0; n < timeout; n++) + { + + status = sanei_pv8630_read_byte (fd, index, &s); + if (status != SANE_STATUS_GOOD) + return status; + + if ((s & mask) == value) + return SANE_STATUS_GOOD; + + usleep (100000); + } + + DBG (DBG_error, "sanei_pv8630_wait_byte: timeout waiting for %x (got %x)\n", + value, s); + return SANE_STATUS_IO_ERROR; +} |