tipar: remove obsolete module
tipar: remove obsolete module The tipar character driver was used to implement bit-banging access to Texas Instruments parallel link cable. A user-land method now exists thru PPDEV & PARPORT. Signed-off-by: Romain Liévin <roms@lpg.ticalc.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Romain Liévin
Greg Kroah-Hartman
parent
8c4606b1a4
commit
cb8c9b6de0
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@ -1,93 +0,0 @@
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Parallel link cable for Texas Instruments handhelds
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===================================================
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Author: Romain Lievin
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Homepage: http://lpg.ticalc.org/prj_tidev/index.html
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INTRODUCTION:
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This is a driver for the very common home-made parallel link cable, a cable
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designed for connecting TI8x/9x graphing calculators (handhelds) to a computer
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or workstation (Alpha, Sparc). Given that driver is built on parport, the
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parallel port abstraction layer, this driver is architecture-independent.
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It can also be used with another device plugged on the same port (such as a
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ZIP drive). I have a 100MB ZIP and both of them work fine!
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If you need more information, please visit the 'TI drivers' homepage at the URL
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above.
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WHAT YOU NEED:
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A TI calculator and a program capable of communicating with your calculator.
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TiLP will work for sure (since I am its developer!). yal92 may be able to use
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it by changing tidev for tipar (may require some hacking...).
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HOW TO USE IT:
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You must have first compiled parport support (CONFIG_PARPORT_DEV): either
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compiled in your kernel, either as a module.
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Next, (as root):
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modprobe parport
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modprobe tipar
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If it is not already there (it usually is), create the device:
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mknod /dev/tipar0 c 115 0
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mknod /dev/tipar1 c 115 1
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mknod /dev/tipar2 c 115 2
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You will have to set permissions on this device to allow you to read/write
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from it:
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chmod 666 /dev/tipar[0..2]
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Now you are ready to run a linking program such as TiLP. Be sure to configure
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it properly (RTFM).
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MODULE PARAMETERS:
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You can set these with: modprobe tipar NAME=VALUE
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There is currently no way to set these on a per-cable basis.
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NAME: timeout
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TYPE: integer
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DEFAULT: 15
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DESC: Timeout value in tenth of seconds. If no data is available once this
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time has expired then the driver will return with a timeout error.
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NAME: delay
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TYPE: integer
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DEFAULT: 10
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DESC: Inter-bit delay in micro-seconds. A lower value gives an higher data
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rate but makes transmission less reliable.
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These parameters can be changed at run time by any program via ioctl(2) calls
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as listed in ./include/linux/ticable.h.
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Rather than write 50 pages describing the ioctl() and so on, it is
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perhaps more useful you look at ticables library (dev_link.c) that demonstrates
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how to use them, and demonstrates the features of the driver. This is
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probably a lot more useful to people interested in writing applications
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that will be using this driver.
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QUIRKS/BUGS:
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None.
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HOW TO CONTACT US:
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You can email me at roms@lpg.ticalc.org. Please prefix the subject line
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with "TIPAR: " so that I am certain to notice your message.
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You can also mail JB at jb@jblache.org. He packaged these drivers for Debian.
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CREDITS:
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The code is based on tidev.c & parport.c.
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The driver has been developed independently of Texas Instruments.
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@ -3699,11 +3699,6 @@ M: nagar@watson.ibm.com
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L: linux-kernel@vger.kernel.org
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S: Maintained
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TI PARALLEL LINK CABLE DRIVER
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P: Romain Lievin
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M: roms@lpg.ticalc.org
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S: Maintained
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TIPC NETWORK LAYER
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P: Per Liden
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M: per.liden@ericsson.com
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@ -543,28 +543,6 @@ config PPDEV
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If unsure, say N.
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config TIPAR
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tristate "Texas Instruments parallel link cable support"
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depends on PARPORT
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---help---
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If you own a Texas Instruments graphing calculator and use a
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parallel link cable, then you might be interested in this driver.
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If you enable this driver, you will be able to communicate with
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your calculator through a set of device nodes under /dev. The
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main advantage of this driver is that you don't have to be root
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to use this precise link cable (depending on the permissions on
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the device nodes, though).
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To compile this driver as a module, choose M here: the
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module will be called tipar.
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If you don't know what a parallel link cable is or what a Texas
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Instruments graphing calculator is, then you probably don't need this
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driver.
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If unsure, say N.
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config HVC_DRIVER
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bool
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help
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@ -1,557 +0,0 @@
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/* Hey EMACS -*- linux-c -*-
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*
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* tipar - low level driver for handling a parallel link cable designed
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* for Texas Instruments graphing calculators (http://lpg.ticalc.org).
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* A part of the TiLP project.
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*
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* Copyright (C) 2000-2002, Romain Lievin <roms@lpg.ticalc.org>
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* under the terms of the GNU General Public License.
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*
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* Various fixes & clean-up from the Linux Kernel Mailing List
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* (Alan Cox, Richard B. Johnson, Christoph Hellwig).
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*/
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/* This driver should, in theory, work with any parallel port that has an
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* appropriate low-level driver; all I/O is done through the parport
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* abstraction layer.
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*
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* If this driver is built into the kernel, you can configure it using the
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* kernel command-line. For example:
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*
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* tipar=timeout,delay (set timeout and delay)
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*
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* If the driver is loaded as a module, similar functionality is available
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* using module parameters. The equivalent of the above commands would be:
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*
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* # insmod tipar timeout=15 delay=10
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*/
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/* COMPATIBILITY WITH OLD KERNELS
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*
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* Usually, parallel cables were bound to ports at
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* particular I/O addresses, as follows:
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*
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* tipar0 0x378
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* tipar1 0x278
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* tipar2 0x3bc
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*
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*
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* This driver, by default, binds tipar devices according to parport and
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* the minor number.
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*
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*/
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#undef DEBUG /* change to #define to get debugging
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* output - for pr_debug() */
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/fcntl.h>
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <asm/uaccess.h>
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#include <linux/ioport.h>
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#include <asm/io.h>
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#include <linux/bitops.h>
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#include <linux/parport.h> /* Our code depend on parport */
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#include <linux/device.h>
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/*
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* TI definitions
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*/
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#include <linux/ticable.h>
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/*
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* Version Information
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*/
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#define DRIVER_VERSION "1.19"
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#define DRIVER_AUTHOR "Romain Lievin <roms@lpg.ticalc.org>"
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#define DRIVER_DESC "Device driver for TI/PC parallel link cables"
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#define DRIVER_LICENSE "GPL"
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#define VERSION(ver,rel,seq) (((ver)<<16) | ((rel)<<8) | (seq))
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/* ----- global variables --------------------------------------------- */
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struct tipar_struct {
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struct pardevice *dev; /* Parport device entry */
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};
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#define PP_NO 3
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static struct tipar_struct table[PP_NO];
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static int delay = IO_DELAY; /* inter-bit delay in microseconds */
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static int timeout = TIMAXTIME; /* timeout in tenth of seconds */
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static unsigned int tp_count; /* tipar count */
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static unsigned long opened; /* opened devices */
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static struct class *tipar_class;
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/* --- macros for parport access -------------------------------------- */
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#define r_dtr(x) (parport_read_data(table[(x)].dev->port))
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#define r_str(x) (parport_read_status(table[(x)].dev->port))
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#define w_ctr(x,y) (parport_write_control(table[(x)].dev->port, (y)))
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#define w_dtr(x,y) (parport_write_data(table[(x)].dev->port, (y)))
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/* --- setting states on the D-bus with the right timing: ------------- */
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static inline void
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outbyte(int value, int minor)
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{
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w_dtr(minor, value);
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}
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static inline int
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inbyte(int minor)
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{
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return (r_str(minor));
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}
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static inline void
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init_ti_parallel(int minor)
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{
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outbyte(3, minor);
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}
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/* ----- global defines ----------------------------------------------- */
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#define START(x) { x = jiffies + (HZ * timeout) / 10; }
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#define WAIT(x) { \
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if (time_before((x), jiffies)) return -1; \
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if (need_resched()) schedule(); }
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/* ----- D-bus bit-banging functions ---------------------------------- */
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/* D-bus protocol (45kbit/s max):
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1 0 0
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_______ ______|______ __________|________ __________
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Red : ________ | ____ | ____
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_ ____________|________ ______|__________ _____
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White: ________ | ______ | _______
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*/
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/* Try to transmit a byte on the specified port (-1 if error). */
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static int
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put_ti_parallel(int minor, unsigned char data)
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{
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unsigned int bit;
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unsigned long max;
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for (bit = 0; bit < 8; bit++) {
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if (data & 1) {
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outbyte(2, minor);
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START(max);
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do {
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WAIT(max);
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} while (inbyte(minor) & 0x10);
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outbyte(3, minor);
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START(max);
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do {
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WAIT(max);
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} while (!(inbyte(minor) & 0x10));
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} else {
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outbyte(1, minor);
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START(max);
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do {
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WAIT(max);
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} while (inbyte(minor) & 0x20);
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outbyte(3, minor);
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START(max);
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do {
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WAIT(max);
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} while (!(inbyte(minor) & 0x20));
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}
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data >>= 1;
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udelay(delay);
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if (need_resched())
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schedule();
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}
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return 0;
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}
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/* Receive a byte on the specified port or -1 if error. */
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static int
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get_ti_parallel(int minor)
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{
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unsigned int bit;
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unsigned char v, data = 0;
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unsigned long max;
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for (bit = 0; bit < 8; bit++) {
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START(max);
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do {
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WAIT(max);
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} while ((v = inbyte(minor) & 0x30) == 0x30);
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if (v == 0x10) {
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data = (data >> 1) | 0x80;
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outbyte(1, minor);
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START(max);
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do {
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WAIT(max);
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} while (!(inbyte(minor) & 0x20));
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outbyte(3, minor);
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} else {
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data = data >> 1;
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outbyte(2, minor);
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START(max);
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do {
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WAIT(max);
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} while (!(inbyte(minor) & 0x10));
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outbyte(3, minor);
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}
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udelay(delay);
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if (need_resched())
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schedule();
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}
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return (int) data;
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}
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/* Try to detect a parallel link cable on the specified port */
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static int
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probe_ti_parallel(int minor)
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{
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int i;
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int seq[] = { 0x00, 0x20, 0x10, 0x30 };
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int data;
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for (i = 3; i >= 0; i--) {
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outbyte(3, minor);
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outbyte(i, minor);
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udelay(delay);
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data = inbyte(minor) & 0x30;
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pr_debug("tipar: Probing -> %i: 0x%02x 0x%02x\n", i,
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data, seq[i]);
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if (data != seq[i]) {
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outbyte(3, minor);
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return -1;
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}
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}
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outbyte(3, minor);
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return 0;
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}
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/* ----- kernel module functions--------------------------------------- */
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static int
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tipar_open(struct inode *inode, struct file *file)
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{
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unsigned int minor = iminor(inode) - TIPAR_MINOR;
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if (tp_count == 0 || minor > tp_count - 1)
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return -ENXIO;
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if (test_and_set_bit(minor, &opened))
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return -EBUSY;
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if (!table[minor].dev) {
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printk(KERN_ERR "%s: NULL device for minor %u\n",
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__FUNCTION__, minor);
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return -ENXIO;
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}
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parport_claim_or_block(table[minor].dev);
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init_ti_parallel(minor);
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parport_release(table[minor].dev);
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return nonseekable_open(inode, file);
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}
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static int
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tipar_close(struct inode *inode, struct file *file)
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{
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unsigned int minor = iminor(inode) - TIPAR_MINOR;
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if (minor > tp_count - 1)
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return -ENXIO;
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clear_bit(minor, &opened);
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return 0;
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}
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static ssize_t
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tipar_write (struct file *file, const char __user *buf, size_t count,
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loff_t * ppos)
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{
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unsigned int minor = iminor(file->f_path.dentry->d_inode) - TIPAR_MINOR;
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ssize_t n;
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parport_claim_or_block(table[minor].dev);
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for (n = 0; n < count; n++) {
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unsigned char b;
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if (get_user(b, buf + n)) {
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n = -EFAULT;
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goto out;
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}
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if (put_ti_parallel(minor, b) == -1) {
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init_ti_parallel(minor);
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n = -ETIMEDOUT;
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goto out;
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}
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}
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out:
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parport_release(table[minor].dev);
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return n;
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}
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static ssize_t
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tipar_read(struct file *file, char __user *buf, size_t count, loff_t * ppos)
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{
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int b = 0;
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unsigned int minor = iminor(file->f_path.dentry->d_inode) - TIPAR_MINOR;
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ssize_t retval = 0;
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ssize_t n = 0;
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if (count == 0)
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return 0;
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parport_claim_or_block(table[minor].dev);
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while (n < count) {
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b = get_ti_parallel(minor);
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if (b == -1) {
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init_ti_parallel(minor);
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retval = -ETIMEDOUT;
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goto out;
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} else {
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if (put_user(b, buf + n)) {
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retval = -EFAULT;
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break;
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} else
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retval = ++n;
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}
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/* Non-blocking mode : try again ! */
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if (file->f_flags & O_NONBLOCK) {
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retval = -EAGAIN;
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goto out;
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}
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/* Signal pending, try again ! */
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if (signal_pending(current)) {
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retval = -ERESTARTSYS;
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goto out;
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}
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if (need_resched())
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schedule();
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}
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out:
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parport_release(table[minor].dev);
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return retval;
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}
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static int
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tipar_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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int retval = 0;
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switch (cmd) {
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case IOCTL_TIPAR_DELAY:
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delay = (int)arg; //get_user(delay, &arg);
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break;
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case IOCTL_TIPAR_TIMEOUT:
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if (arg != 0)
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timeout = (int)arg;
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else
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retval = -EINVAL;
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break;
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default:
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retval = -ENOTTY;
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break;
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}
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return retval;
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}
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/* ----- kernel module registering ------------------------------------ */
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static const struct file_operations tipar_fops = {
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.owner = THIS_MODULE,
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.llseek = no_llseek,
|
||||
.read = tipar_read,
|
||||
.write = tipar_write,
|
||||
.ioctl = tipar_ioctl,
|
||||
.open = tipar_open,
|
||||
.release = tipar_close,
|
||||
};
|
||||
|
||||
/* --- initialisation code ------------------------------------- */
|
||||
|
||||
#ifndef MODULE
|
||||
/* You must set these - there is no sane way to probe for this cable.
|
||||
* You can use 'tipar=timeout,delay' to set these now. */
|
||||
static int __init
|
||||
tipar_setup(char *str)
|
||||
{
|
||||
int ints[3];
|
||||
|
||||
str = get_options(str, ARRAY_SIZE(ints), ints);
|
||||
|
||||
if (ints[0] > 0) {
|
||||
if (ints[1] != 0)
|
||||
timeout = ints[1];
|
||||
else
|
||||
printk(KERN_WARNING "tipar: bad timeout value (0), "
|
||||
"using default value instead");
|
||||
if (ints[0] > 1) {
|
||||
delay = ints[2];
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Register our module into parport.
|
||||
* Pass also 2 callbacks functions to parport: a pre-emptive function and an
|
||||
* interrupt handler function (unused).
|
||||
* Display a message such "tipar0: using parport0 (polling)".
|
||||
*/
|
||||
static int
|
||||
tipar_register(int nr, struct parport *port)
|
||||
{
|
||||
int err = 0;
|
||||
|
||||
/* Register our module into parport */
|
||||
table[nr].dev = parport_register_device(port, "tipar",
|
||||
NULL, NULL, NULL, 0,
|
||||
(void *) &table[nr]);
|
||||
|
||||
if (table[nr].dev == NULL) {
|
||||
err = 1;
|
||||
goto out;
|
||||
}
|
||||
|
||||
device_create(tipar_class, port->dev, MKDEV(TIPAR_MAJOR,
|
||||
TIPAR_MINOR + nr), "par%d", nr);
|
||||
|
||||
/* Display informations */
|
||||
pr_info("tipar%d: using %s (%s)\n", nr, port->name, (port->irq ==
|
||||
PARPORT_IRQ_NONE) ? "polling" : "interrupt-driven");
|
||||
|
||||
if (probe_ti_parallel(nr) != -1)
|
||||
pr_info("tipar%d: link cable found\n", nr);
|
||||
else
|
||||
pr_info("tipar%d: link cable not found\n", nr);
|
||||
|
||||
err = 0;
|
||||
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void
|
||||
tipar_attach(struct parport *port)
|
||||
{
|
||||
if (tp_count == PP_NO) {
|
||||
pr_info("tipar: ignoring parallel port (max. %d)\n", PP_NO);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!tipar_register(tp_count, port))
|
||||
tp_count++;
|
||||
}
|
||||
|
||||
static void
|
||||
tipar_detach(struct parport *port)
|
||||
{
|
||||
/* Nothing to do */
|
||||
}
|
||||
|
||||
static struct parport_driver tipar_driver = {
|
||||
.name = "tipar",
|
||||
.attach = tipar_attach,
|
||||
.detach = tipar_detach,
|
||||
};
|
||||
|
||||
static int __init
|
||||
tipar_init_module(void)
|
||||
{
|
||||
int err = 0;
|
||||
|
||||
pr_info("tipar: parallel link cable driver, version %s\n",
|
||||
DRIVER_VERSION);
|
||||
|
||||
if (register_chrdev(TIPAR_MAJOR, "tipar", &tipar_fops)) {
|
||||
printk(KERN_ERR "tipar: unable to get major %d\n", TIPAR_MAJOR);
|
||||
err = -EIO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
tipar_class = class_create(THIS_MODULE, "ticables");
|
||||
if (IS_ERR(tipar_class)) {
|
||||
err = PTR_ERR(tipar_class);
|
||||
goto out_chrdev;
|
||||
}
|
||||
if (parport_register_driver(&tipar_driver)) {
|
||||
printk(KERN_ERR "tipar: unable to register with parport\n");
|
||||
err = -EIO;
|
||||
goto out_class;
|
||||
}
|
||||
|
||||
err = 0;
|
||||
goto out;
|
||||
|
||||
out_class:
|
||||
class_destroy(tipar_class);
|
||||
|
||||
out_chrdev:
|
||||
unregister_chrdev(TIPAR_MAJOR, "tipar");
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __exit
|
||||
tipar_cleanup_module(void)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
/* Unregistering module */
|
||||
parport_unregister_driver(&tipar_driver);
|
||||
|
||||
unregister_chrdev(TIPAR_MAJOR, "tipar");
|
||||
|
||||
for (i = 0; i < PP_NO; i++) {
|
||||
if (table[i].dev == NULL)
|
||||
continue;
|
||||
parport_unregister_device(table[i].dev);
|
||||
device_destroy(tipar_class, MKDEV(TIPAR_MAJOR, i));
|
||||
}
|
||||
class_destroy(tipar_class);
|
||||
|
||||
pr_info("tipar: module unloaded\n");
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------- */
|
||||
|
||||
__setup("tipar=", tipar_setup);
|
||||
module_init(tipar_init_module);
|
||||
module_exit(tipar_cleanup_module);
|
||||
|
||||
MODULE_AUTHOR(DRIVER_AUTHOR);
|
||||
MODULE_DESCRIPTION(DRIVER_DESC);
|
||||
MODULE_LICENSE(DRIVER_LICENSE);
|
||||
|
||||
module_param(timeout, int, 0);
|
||||
MODULE_PARM_DESC(timeout, "Timeout (default=1.5 seconds)");
|
||||
module_param(delay, int, 0);
|
||||
MODULE_PARM_DESC(delay, "Inter-bit delay (default=10 microseconds)");
|
||||
|
|
@ -1,44 +0,0 @@
|
|||
/* 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*/
|
||||
#define IOCTL_TIUSB_GET_MAXPS _IOR('N', 0x23, int) /* max packet size */
|
||||
#define IOCTL_TIUSB_GET_DEVID _IOR('N', 0x24, int) /* get device type */
|
||||
|
||||
#endif /* TICABLE_H */
|
||||
Reference in New Issue