1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* 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, see <https://www.gnu.org/licenses/>.
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, (void *) 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;
}
|
