patch-2.4.21 linux-2.4.21/drivers/usb/auerchar.h

• Lines: 80
• Date: 2003-06-13 07:51:36.000000000 -0700
• Orig file: linux-2.4.20/drivers/usb/auerchar.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/drivers/usb/auerchar.h linux-2.4.21/drivers/usb/auerchar.h
@@ -0,0 +1,79 @@
+/*****************************************************************************/
+/*
+ *      auerchar.h  --  Auerswald PBX/System Telephone character interface.
+ *
+ *      Copyright (C) 2002  Wolfgang Mües (wolfgang@iksw-muees.de)
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU General Public License for more details.
+ *
+ *      You should have received a copy of the GNU General Public License
+ *      along with this program; if not, write to the Free Software
+ *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+ /*****************************************************************************/
+
+#ifndef AUERCHAR_H
+#define AUERCHAR_H
+
+#include "auerchain.h"
+#include "auerbuf.h"
+#include "auerserv.h"
+
+/* External data structures / Interface                              */
+struct audevinfo {
+	char *buf;		/* return buffer for string contents */
+	unsigned int bsize;	/* size of return buffer */
+};
+
+/* IO controls */
+#define IOCTL_AU_SLEN	  _IOR( 'U', 0xF0, int)	/* return the max. string descriptor length */
+#define IOCTL_AU_DEVINFO  _IOWR('U', 0xF1, struct audevinfo)	/* get name of a specific device */
+#define IOCTL_AU_SERVREQ  _IOW( 'U', 0xF2, int)	/* request a service channel */
+#define IOCTL_AU_BUFLEN	  _IOR( 'U', 0xF3, int)	/* return the max. buffer length for the device */
+#define IOCTL_AU_RXAVAIL  _IOR( 'U', 0xF4, int)	/* return != 0 if Receive Data available */
+#define IOCTL_AU_CONNECT  _IOR( 'U', 0xF5, int)	/* return != 0 if connected to a service channel */
+#define IOCTL_AU_TXREADY  _IOR( 'U', 0xF6, int)	/* return != 0 if Transmitt channel ready to send */
+/*                              'U'  0xF7..0xFF reserved */
+
+/* character device context */
+struct auerswald;
+struct auerchar {
+	struct semaphore mutex;		/* protection in user context */
+	struct auerswald *auerdev;	/* context pointer of assigned device */
+	struct auerbufctl bufctl;	/* controls the buffer chain */
+	struct auerscon scontext;	/* service context */
+	wait_queue_head_t readwait;	/* for synchronous reading */
+	struct semaphore readmutex;	/* protection against multiple reads */
+	struct auerbuf *readbuf;	/* buffer held for partial reading */
+	unsigned int readoffset;	/* current offset in readbuf */
+	unsigned int removed;		/* is != 0 if device is removed */
+};
+
+/* Function prototypes */
+void auerchar_delete(struct auerchar *ccp);
+
+int auerchar_open(struct inode *inode, struct file *file);
+
+int auerchar_ioctl(struct inode *inode, struct file *file,
+		   unsigned int cmd, unsigned long arg);
+
+loff_t auerchar_llseek(struct file *file, loff_t offset, int origin);
+
+ssize_t auerchar_read(struct file *file, char *buf, size_t count,
+		      loff_t * ppos);
+
+ssize_t auerchar_write(struct file *file, const char *buf, size_t len,
+		       loff_t * ppos);
+
+int auerchar_release(struct inode *inode, struct file *file);
+
+
+#endif	/* AUERCHAR_H */