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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

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* linux/include/linux/ppdev.h

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* User-space parallel port device driver (header file).

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* This program is free software; you can redistribute it and/or

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* modify it under the terms of the GNU General Public License

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* as published by the Free Software Foundation; either version

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* 2 of the License, or (at your option) any later version.

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* Added PPGETTIME/PPSETTIME, Fred Barnes, 1999

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* Added PPGETMODES/PPGETMODE/PPGETPHASE, Fred Barnes <frmb2@ukc.ac.uk>, 03/01/2001

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#define PP_IOCTL 'p'

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/* Set mode for read/write (e.g. IEEE1284_MODE_EPP) */

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#define PPSETMODE _IOW(PP_IOCTL, 0x80, int)

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/* Read status */

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#define PPRSTATUS _IOR(PP_IOCTL, 0x81, unsigned char)

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#define PPWSTATUS OBSOLETE__IOW(PP_IOCTL, 0x82, unsigned char)

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/* Read/write control */

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#define PPRCONTROL _IOR(PP_IOCTL, 0x83, unsigned char)

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#define PPWCONTROL _IOW(PP_IOCTL, 0x84, unsigned char)

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struct ppdev_frob_struct {

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unsigned char mask;

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unsigned char val;

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};

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#define PPFCONTROL _IOW(PP_IOCTL, 0x8e, struct ppdev_frob_struct)

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/* Read/write data */

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#define PPRDATA _IOR(PP_IOCTL, 0x85, unsigned char)

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#define PPWDATA _IOW(PP_IOCTL, 0x86, unsigned char)

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/* Read/write econtrol (not used) */

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#define PPRECONTROL OBSOLETE__IOR(PP_IOCTL, 0x87, unsigned char)

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#define PPWECONTROL OBSOLETE__IOW(PP_IOCTL, 0x88, unsigned char)

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/* Read/write FIFO (not used) */

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#define PPRFIFO OBSOLETE__IOR(PP_IOCTL, 0x89, unsigned char)

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#define PPWFIFO OBSOLETE__IOW(PP_IOCTL, 0x8a, unsigned char)

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/* Claim the port to start using it */

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#define PPCLAIM _IO(PP_IOCTL, 0x8b)

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/* Release the port when you aren't using it */

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#define PPRELEASE _IO(PP_IOCTL, 0x8c)

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/* Yield the port (release it if another driver is waiting,

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* then reclaim) */

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#define PPYIELD _IO(PP_IOCTL, 0x8d)

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/* Register device exclusively (must be before PPCLAIM). */

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#define PPEXCL _IO(PP_IOCTL, 0x8f)

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/* Data line direction: non-zero for input mode. */

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#define PPDATADIR _IOW(PP_IOCTL, 0x90, int)

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/* Negotiate a particular IEEE 1284 mode. */

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#define PPNEGOT _IOW(PP_IOCTL, 0x91, int)

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/* Set control lines when an interrupt occurs. */

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#define PPWCTLONIRQ _IOW(PP_IOCTL, 0x92, unsigned char)

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/* Clear (and return) interrupt count. */

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#define PPCLRIRQ _IOR(PP_IOCTL, 0x93, int)

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/* Set the IEEE 1284 phase that we're in (e.g. IEEE1284_PH_FWD_IDLE) */

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#define PPSETPHASE _IOW(PP_IOCTL, 0x94, int)

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/* Set and get port timeout (struct timeval's) */

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#define PPGETTIME _IOR(PP_IOCTL, 0x95, struct timeval)

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#define PPSETTIME _IOW(PP_IOCTL, 0x96, struct timeval)

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/* Get available modes (what the hardware can do) */

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#define PPGETMODES _IOR(PP_IOCTL, 0x97, unsigned int)

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/* Get the current mode and phaze */

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#define PPGETMODE _IOR(PP_IOCTL, 0x98, int)

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#define PPGETPHASE _IOR(PP_IOCTL, 0x99, int)

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/* get/set flags */

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#define PPGETFLAGS _IOR(PP_IOCTL, 0x9a, int)

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#define PPSETFLAGS _IOW(PP_IOCTL, 0x9b, int)

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/* flags visible to the world */

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#define PP_FASTWRITE (1<<2)

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#define PP_FASTREAD (1<<3)

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#define PP_W91284PIC (1<<4)

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/* only masks user-visible flags */

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#define PP_FLAGMASK (PP_FASTWRITE | PP_FASTREAD | PP_W91284PIC)

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