| #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 |
