#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