patch-2.1.29 linux/include/asm-sparc/bpp.h

• Lines: 83
• Date: Wed Mar 5 17:04:33 1997
• Orig file: v2.1.28/linux/include/asm-sparc/bpp.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.28/linux/include/asm-sparc/bpp.h linux/include/asm-sparc/bpp.h
@@ -0,0 +1,82 @@
+#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, void)
+# define BPP_PUT_DATA _IOW('B', 3, int)
+# define BPP_GET_DATA _IOR('B', 4, void)
+
+/*
+ * 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
+
+
+/*
+ * Prototype for the initialization routine.
+ */
+
+#ifdef __KERNEL__
+extern int bpp_init(void);
+#endif
+
+#endif