mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 08:31:55 +00:00
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
|
#ifndef _SPARC_BPP_H
|
||
|
|
#define _SPARC_BPP_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1995 Picture Elements
|
||
|
|
* Stephen Williams
|
||
|
|
* Gus Baldauf
|
||
|
|
*
|
||
|
|
* Linux/SPARC port by Peter Zaitcev.
|
||
|
|
* Integration into SPARC tree by Tom Dyas.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/ioctl.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is a driver that supports IEEE Std 1284-1994 communications
|
||
|
|
* with compliant or compatible devices. It will use whatever features
|
||
|
|
* the device supports, prefering those that are typically faster.
|
||
|
|
*
|
||
|
|
* When the device is opened, it is left in COMPATABILITY mode, and
|
||
|
|
* writes work like any printer device. The driver only attempt to
|
||
|
|
* negotiate 1284 modes when needed so that plugs can be pulled,
|
||
|
|
* switch boxes switched, etc., without disrupting things. It will
|
||
|
|
* also leave the device in compatibility mode when closed.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This driver also supplies ioctls to manually manipulate the
|
||
|
|
* pins. This is great for testing devices, or writing code to deal
|
||
|
|
* with bizzarro-mode of the ACME Special TurboThingy Plus.
|
||
|
|
*
|
||
|
|
* NOTE: These ioctl currently do not interact well with
|
||
|
|
* read/write. Caveat emptor.
|
||
|
|
*
|
||
|
|
* PUT_PINS allows us to assign the sense of all the pins, including
|
||
|
|
* the data pins if being driven by the host. The GET_PINS returns the
|
||
|
|
* pins that the peripheral drives, including data if appropriate.
|
||
|
|
*/
|
||
|
|
|
||
|
|
# define BPP_PUT_PINS _IOW('B', 1, int)
|
||
|
|
# define BPP_GET_PINS _IOR('B', 2, char) /* that's bogus - should've been _IO */
|
||
|
|
# define BPP_PUT_DATA _IOW('B', 3, int)
|
||
|
|
# define BPP_GET_DATA _IOR('B', 4, char) /* ditto */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set the data bus to input mode. Disengage the data bin driver and
|
||
|
|
* be prepared to read values from the peripheral. If the arg is 0,
|
||
|
|
* then revert the bus to output mode.
|
||
|
|
*/
|
||
|
|
# define BPP_SET_INPUT _IOW('B', 5, int)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These bits apply to the PUT operation...
|
||
|
|
*/
|
||
|
|
# define BPP_PP_nStrobe 0x0001
|
||
|
|
# define BPP_PP_nAutoFd 0x0002
|
||
|
|
# define BPP_PP_nInit 0x0004
|
||
|
|
# define BPP_PP_nSelectIn 0x0008
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These apply to the GET operation, which also reads the current value
|
||
|
|
* of the previously put values. A bit mask of these will be returned
|
||
|
|
* as a bit mask in the return code of the ioctl().
|
||
|
|
*/
|
||
|
|
# define BPP_GP_nAck 0x0100
|
||
|
|
# define BPP_GP_Busy 0x0200
|
||
|
|
# define BPP_GP_PError 0x0400
|
||
|
|
# define BPP_GP_Select 0x0800
|
||
|
|
# define BPP_GP_nFault 0x1000
|
||
|
|
|
||
|
|
#endif
|