| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _SPARC64_BPP_H |
| 2 | #define _SPARC64_BPP_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 1995 Picture Elements |
| 6 | * Stephen Williams |
| 7 | * Gus Baldauf |
| 8 | * |
| 9 | * Linux/SPARC port by Peter Zaitcev. |
| 10 | * Integration into SPARC tree by Tom Dyas. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/ioctl.h> |
| 14 | |
| 15 | /* |
| 16 | * This is a driver that supports IEEE Std 1284-1994 communications |
| 17 | * with compliant or compatible devices. It will use whatever features |
| 18 | * the device supports, prefering those that are typically faster. |
| 19 | * |
| 20 | * When the device is opened, it is left in COMPATIBILITY mode, and |
| 21 | * writes work like any printer device. The driver only attempt to |
| 22 | * negotiate 1284 modes when needed so that plugs can be pulled, |
| 23 | * switch boxes switched, etc., without disrupting things. It will |
| 24 | * also leave the device in compatibility mode when closed. |
| 25 | */ |
| 26 | |
| 27 | |
| 28 | |
| 29 | /* |
| 30 | * This driver also supplies ioctls to manually manipulate the |
| 31 | * pins. This is great for testing devices, or writing code to deal |
| 32 | * with bizzarro-mode of the ACME Special TurboThingy Plus. |
| 33 | * |
| 34 | * NOTE: These ioctl currently do not interact well with |
| 35 | * read/write. Caveat emptor. |
| 36 | * |
| 37 | * PUT_PINS allows us to assign the sense of all the pins, including |
| 38 | * the data pins if being driven by the host. The GET_PINS returns the |
| 39 | * pins that the peripheral drives, including data if appropriate. |
| 40 | */ |
| 41 | |
| 42 | # define BPP_PUT_PINS _IOW('B', 1, int) |
| 43 | # define BPP_GET_PINS _IOR('B', 2, char) /* that's bogus - should've been _IO */ |
| 44 | # define BPP_PUT_DATA _IOW('B', 3, int) |
| 45 | # define BPP_GET_DATA _IOR('B', 4, char) /* ditto */ |
| 46 | |
| 47 | /* |
| 48 | * Set the data bus to input mode. Disengage the data bin driver and |
| 49 | * be prepared to read values from the peripheral. If the arg is 0, |
| 50 | * then revert the bus to output mode. |
| 51 | */ |
| 52 | # define BPP_SET_INPUT _IOW('B', 5, int) |
| 53 | |
| 54 | /* |
| 55 | * These bits apply to the PUT operation... |
| 56 | */ |
| 57 | # define BPP_PP_nStrobe 0x0001 |
| 58 | # define BPP_PP_nAutoFd 0x0002 |
| 59 | # define BPP_PP_nInit 0x0004 |
| 60 | # define BPP_PP_nSelectIn 0x0008 |
| 61 | |
| 62 | /* |
| 63 | * These apply to the GET operation, which also reads the current value |
| 64 | * of the previously put values. A bit mask of these will be returned |
| 65 | * as a bit mask in the return code of the ioctl(). |
| 66 | */ |
| 67 | # define BPP_GP_nAck 0x0100 |
| 68 | # define BPP_GP_Busy 0x0200 |
| 69 | # define BPP_GP_PError 0x0400 |
| 70 | # define BPP_GP_Select 0x0800 |
| 71 | # define BPP_GP_nFault 0x1000 |
| 72 | |
| 73 | #endif |