USB tiusb

added tiusb driver
some tweaks to the driver done by greg@kroah.com

Documentation/usb/silverlink.txt

+-------------------------------------------------------------------------
+Readme for Linux device driver for the Texas Instruments SilverLink cable
+-------------------------------------------------------------------------
+
+Author: Romain Liévin & Julien Blache
+Homepage: http://lpg.ticalc.org/prj_usb
+
+INTRODUCTION:
+
+This is a driver for the TI-GRAPH LINK USB (aka SilverLink) cable, a cable 
+designed by TI for connecting their TI8x/9x calculators to a computer 
+(PC or Mac usually).
+
+If you need more information, please visit the 'SilverLink drivers' homepage 
+at the above URL.
+
+WHAT YOU NEED:
+
+A TI calculator of course and a program capable to communicate with your 
+calculator.
+TiLP will work for sure (since I am his developer !). yal92 may be able to use
+it by changing tidev for tiglusb (may require some hacking...).
+
+HOW TO USE IT:
+
+You must have first compiled USB support, support for your specific USB host
+controller (UHCI or OHCI).
+
+Next, (as root) from your appropriate modules directory (lib/modules/2.5.XX):
+
+       insmod usb/usbcore.o
+       insmod usb/usb-uhci.o  <OR>  insmod usb/ohci-hcd.o
+       insmod tiglusb.o
+
+If it is not already there (it usually is), create the device:
+
+       mknod /dev/tiglusb0 c 115 16
+
+You will have to set permissions on this device to allow you to read/write
+from it:
+
+       chmod 666 /dev/tiglusb0
+       
+Now you are ready to run a linking program such as TiLP. Be sure to configure 
+it properly (RTFM).
+       
+MODULE PARAMETERS:
+
+  You can set these with:  insmod tiglusb NAME=VALUE
+  There is currently no way to set these on a per-cable basis.
+
+  NAME: timeout
+  TYPE: integer
+  DEFAULT: 15
+  DESC: Timeout value in tenth of seconds. If no data is available once this 
+       time has expired then the driver will return with a timeout error.
+
+QUIRKS:
+
+The following problem seems to be specific to the link cable since it appears 
+on all platforms (Linux, Windows, Mac OS-X). 
+
+In some very particular cases, the driver returns with success but
+without any data. The application should retry a read operation at least once.
+
+HOW TO CONTACT US:
+
+You can email me at roms@lpg.ticalc.org. Please prefix the subject line
+with "TIGLUSB: " so that I am certain to notice your message.
+You can also mail JB at jb@jblache.org: he has written the first release of 
+this driver but he better knows the Mac OS-X driver.
+
+CREDITS:
+
+The code is based on dabusb.c, printer.c and scanner.c !
+The driver has been developed independantly of Texas Instruments.

MAINTAINERS

@@ -1502,6 +1502,13 @@ P:	Christoph Hellwig
 M:	hch@infradead.org
 S:	Maintained
 
+TI GRAPH LINK USB (SilverLink) CABLE DRIVER
+P:     Romain Lievin
+M:     roms@lpg.ticalc.org
+P:     Julien Blache
+M:     jb@technologeek.org
+S:     Maintained
+
 TLAN NETWORK DRIVER
 P:	Torben Mathiasen
 M:	torben.mathiasen@compaq.com
@@ -1660,6 +1667,7 @@ P:	Petko Manolov
 M:	petkan@users.sourceforge.net
 L:	linux-usb-users@lists.sourceforge.net
 L:	linux-usb-devel@lists.sourceforge.net
+W:	http://pegasus2.sourceforge.net/
 S:	Maintained
 
 USB PRINTER DRIVER
@@ -1669,6 +1677,14 @@ L:	linux-usb-users@lists.sourceforge.net
 L:	linux-usb-devel@lists.sourceforge.net
 S:	Maintained
 
+USB RTL8150 DRIVER
+P:	Petko Manolov
+M:	petkan@users.sourceforge.net
+L:	linux-usb-users@lists.sourceforge.net
+L:	linux-usb-devel@lists.sourceforge.net
+W:	http://pegasus2.sourceforge.net/
+S:	Maintained
+
 USB SE401 DRIVER
 P:	Jeroen Vreeken
 M:	pe1rxq@amsat.org

drivers/usb/tiglusb.h

+/* Hey EMACS -*- linux-c -*-
+ *
+ * tiglusb - low level driver for SilverLink cable
+ *
+ * Copyright (C) 2000-2002, Romain Lievin <roms@lpg.ticalc.org>
+ * under the terms of the GNU General Public License.
+ *
+ * Redistribution of this file is permitted under the terms of the GNU
+ * Public License (GPL)
+ */
+
+#ifndef _TIGLUSB_H
+#define _TIGLUSB_H
+
+/*
+ * Max. number of devices supported
+ */
+#define MAXTIGL		16
+
+/*
+ * Max. packetsize for IN and OUT pipes
+ */
+#define BULK_RCV_MAX	32
+#define BULK_SND_MAX	32
+
+/*
+ * The driver context...
+ */
+
+typedef enum { _stopped=0, _started } driver_state_t;
+
+typedef struct
+{
+	struct usb_device	*dev;		/* USB device handle */
+	struct semaphore	mutex;		/* locks this struct */
+	struct semaphore	sem;
+
+	wait_queue_head_t	wait;		/* for timed waits */
+	wait_queue_head_t	remove_ok;
+
+	int		minor;			/* which minor dev #? */
+	devfs_handle_t	devfs;			/* devfs device */
+
+	driver_state_t	state;			/* started/stopped */
+	int		opened;			/* tru if open */
+	int	remove_pending;
+
+	char	rd_buf[BULK_RCV_MAX];		/* read  buffer */
+	char	wr_buf[BULK_SND_MAX];		/* write buffer */
+
+} tiglusb_t, *ptiglusb_t;
+
+extern devfs_handle_t usb_devfs_handle;		/* /dev/usb dir. */
+
+#endif

include/linux/ticable.h

+/* Hey EMACS -*- linux-c -*-
+ *
+ * tipar/tiser/tiusb - low level driver for handling link cables
+ * designed for Texas Instruments graphing calculators.
+ *
+ * Copyright (C) 2000-2002, Romain Lievin <roms@lpg.ticalc.org>
+ *
+ * Redistribution of this file is permitted under the terms of the GNU
+ * Public License (GPL)
+ */
+
+#ifndef _TICABLE_H 
+#define _TICABLE_H 1
+
+/* Internal default constants for the kernel module */
+#define TIMAXTIME 15      /* 1.5 seconds       */
+#define IO_DELAY  10      /* 10 micro-seconds  */
+
+/* Major & minor number for character devices */
+#define TIPAR_MAJOR  115 /* 0 to 7 */
+#define TIPAR_MINOR    0
+
+#define TISER_MAJOR  115 /* 8 to 15 */
+#define TISER_MINOR    8
+
+#define TIUSB_MAJOR  115  /* 16 to 31 */
+#define TIUSB_MINOR   16
+
+/*
+ * Request values for the 'ioctl' function.
+ */
+#define IOCTL_TIPAR_DELAY     _IOW('p', 0xa8, int) /* set delay   */
+#define IOCTL_TIPAR_TIMEOUT   _IOW('p', 0xa9, int) /* set timeout */
+
+#define IOCTL_TISER_DELAY     _IOW('p', 0xa0, int) /* set delay   */
+#define IOCTL_TISER_TIMEOUT   _IOW('p', 0xa1, int) /* set timeout */
+
+#define IOCTL_TIUSB_TIMEOUT        _IOW('N', 0x20, int) /* set timeout */
+#define IOCTL_TIUSB_RESET_DEVICE   _IOW('N', 0x21, int) /* reset device */
+#define IOCTL_TIUSB_RESET_PIPES    _IOW('N', 0x22, int) /* reset both pipes*/
+
+#endif /* TICABLE_H */