1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /*
3  * linux/include/linux/ppdev.h
4  *
5  * User-space parallel port device driver (header file).
6  *
7  * Copyright (C) 1998-9 Tim Waugh <tim@cyberelk.demon.co.uk>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version
12  * 2 of the License, or (at your option) any later version.
13  *
14  * Added PPGETTIME/PPSETTIME, Fred Barnes, 1999
15  * Added PPGETMODES/PPGETMODE/PPGETPHASE, Fred Barnes <frmb2@ukc.ac.uk>, 03/01/2001
16  */
17 
18 #ifndef _UAPI_LINUX_PPDEV_H
19 #define _UAPI_LINUX_PPDEV_H
20 
21 #define PP_IOCTL	'p'
22 
23 /* Set mode for read/write (e.g. IEEE1284_MODE_EPP) */
24 #define PPSETMODE	_IOW(PP_IOCTL, 0x80, int)
25 
26 /* Read status */
27 #define PPRSTATUS	_IOR(PP_IOCTL, 0x81, unsigned char)
28 #define PPWSTATUS	OBSOLETE__IOW(PP_IOCTL, 0x82, unsigned char)
29 
30 /* Read/write control */
31 #define PPRCONTROL	_IOR(PP_IOCTL, 0x83, unsigned char)
32 #define PPWCONTROL	_IOW(PP_IOCTL, 0x84, unsigned char)
33 
34 struct ppdev_frob_struct {
35 	unsigned char mask;
36 	unsigned char val;
37 };
38 #define PPFCONTROL      _IOW(PP_IOCTL, 0x8e, struct ppdev_frob_struct)
39 
40 /* Read/write data */
41 #define PPRDATA		_IOR(PP_IOCTL, 0x85, unsigned char)
42 #define PPWDATA		_IOW(PP_IOCTL, 0x86, unsigned char)
43 
44 /* Read/write econtrol (not used) */
45 #define PPRECONTROL	OBSOLETE__IOR(PP_IOCTL, 0x87, unsigned char)
46 #define PPWECONTROL	OBSOLETE__IOW(PP_IOCTL, 0x88, unsigned char)
47 
48 /* Read/write FIFO (not used) */
49 #define PPRFIFO		OBSOLETE__IOR(PP_IOCTL, 0x89, unsigned char)
50 #define PPWFIFO		OBSOLETE__IOW(PP_IOCTL, 0x8a, unsigned char)
51 
52 /* Claim the port to start using it */
53 #define PPCLAIM		_IO(PP_IOCTL, 0x8b)
54 
55 /* Release the port when you aren't using it */
56 #define PPRELEASE	_IO(PP_IOCTL, 0x8c)
57 
58 /* Yield the port (release it if another driver is waiting,
59  * then reclaim) */
60 #define PPYIELD		_IO(PP_IOCTL, 0x8d)
61 
62 /* Register device exclusively (must be before PPCLAIM). */
63 #define PPEXCL		_IO(PP_IOCTL, 0x8f)
64 
65 /* Data line direction: non-zero for input mode. */
66 #define PPDATADIR	_IOW(PP_IOCTL, 0x90, int)
67 
68 /* Negotiate a particular IEEE 1284 mode. */
69 #define PPNEGOT		_IOW(PP_IOCTL, 0x91, int)
70 
71 /* Set control lines when an interrupt occurs. */
72 #define PPWCTLONIRQ	_IOW(PP_IOCTL, 0x92, unsigned char)
73 
74 /* Clear (and return) interrupt count. */
75 #define PPCLRIRQ	_IOR(PP_IOCTL, 0x93, int)
76 
77 /* Set the IEEE 1284 phase that we're in (e.g. IEEE1284_PH_FWD_IDLE) */
78 #define PPSETPHASE	_IOW(PP_IOCTL, 0x94, int)
79 
80 /* Set and get port timeout (struct timeval's) */
81 #define PPGETTIME	_IOR(PP_IOCTL, 0x95, struct timeval)
82 #define PPSETTIME	_IOW(PP_IOCTL, 0x96, struct timeval)
83 
84 /* Get available modes (what the hardware can do) */
85 #define PPGETMODES	_IOR(PP_IOCTL, 0x97, unsigned int)
86 
87 /* Get the current mode and phaze */
88 #define PPGETMODE	_IOR(PP_IOCTL, 0x98, int)
89 #define PPGETPHASE	_IOR(PP_IOCTL, 0x99, int)
90 
91 /* get/set flags */
92 #define PPGETFLAGS	_IOR(PP_IOCTL, 0x9a, int)
93 #define PPSETFLAGS	_IOW(PP_IOCTL, 0x9b, int)
94 
95 /* flags visible to the world */
96 #define PP_FASTWRITE	(1<<2)
97 #define PP_FASTREAD	(1<<3)
98 #define PP_W91284PIC	(1<<4)
99 
100 /* only masks user-visible flags */
101 #define PP_FLAGMASK	(PP_FASTWRITE | PP_FASTREAD | PP_W91284PIC)
102 
103 #endif /* _UAPI_LINUX_PPDEV_H */
104