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/*
module/proc.c
/proc interface for comedi
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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.
*/
/*
This is some serious bloatware.
Taken from Dave A.'s PCL-711 driver, 'cuz I thought it
was cool.
*/
#define __NO_VERSION__
#include "comedidev.h"
#include "comedi_fops.h"
#include <linux/proc_fs.h>
#include <linux/string.h>
#ifdef CONFIG_PROC_FS
static int comedi_read(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
int i;
int devices_q = 0;
int l = 0;
struct comedi_driver *driv;
l += sprintf(buf + l,
"comedi version " COMEDI_RELEASE "\n"
"format string: %s\n",
"\"%2d: %-20s %-20s %4d\", i, "
"driver_name, board_name, n_subdevices");
for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) {
struct comedi_device_file_info *dev_file_info =
comedi_get_device_file_info(i);
struct comedi_device *dev;
if (dev_file_info == NULL)
continue;
dev = dev_file_info->device;
if (dev->attached) {
devices_q = 1;
l += sprintf(buf + l, "%2d: %-20s %-20s %4d\n",
i,
dev->driver->driver_name,
dev->board_name, dev->n_subdevices);
}
}
if (!devices_q)
l += sprintf(buf + l, "no devices\n");
for (driv = comedi_drivers; driv; driv = driv->next) {
l += sprintf(buf + l, "%s:\n", driv->driver_name);
for (i = 0; i < driv->num_names; i++) {
l += sprintf(buf + l, " %s\n",
*(char **)((char *)driv->board_name +
i * driv->offset));
}
if (!driv->num_names)
l += sprintf(buf + l, " %s\n", driv->driver_name);
}
return l;
}
void comedi_proc_init(void)
{
struct proc_dir_entry *comedi_proc;
comedi_proc = create_proc_entry("comedi", S_IFREG | S_IRUGO, NULL);
if (comedi_proc)
comedi_proc->read_proc = comedi_read;
}
void comedi_proc_cleanup(void)
{
remove_proc_entry("comedi", NULL);
}
#endif
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