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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475// SPDX-License-Identifier: GPL-2.0+/* * /proc interface for comedi * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 1998 David A. Schleef <ds@schleef.org> */
/* * This is some serious bloatware. * * Taken from Dave A.'s PCL-711 driver, 'cuz I thought it * was cool. */
#include <linux/comedi/comedidev.h>#include "comedi_internal.h"#include <linux/proc_fs.h>#include <linux/seq_file.h>
static int comedi_read(struct seq_file *m, void *v){ int i; int devices_q = 0; struct comedi_driver *driv;
seq_printf(m, "comedi version " COMEDI_RELEASE "\nformat 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 *dev = comedi_dev_get_from_minor(i);
if (!dev) continue;
down_read(&dev->attach_lock); if (dev->attached) { devices_q = 1; seq_printf(m, "%2d: %-20s %-20s %4d\n", i, dev->driver->driver_name, dev->board_name, dev->n_subdevices); } up_read(&dev->attach_lock); comedi_dev_put(dev); } if (!devices_q) seq_puts(m, "no devices\n");
mutex_lock(&comedi_drivers_list_lock); for (driv = comedi_drivers; driv; driv = driv->next) { seq_printf(m, "%s:\n", driv->driver_name); for (i = 0; i < driv->num_names; i++) seq_printf(m, " %s\n", *(char **)((char *)driv->board_name + i * driv->offset));
if (!driv->num_names) seq_printf(m, " %s\n", driv->driver_name); } mutex_unlock(&comedi_drivers_list_lock);
return 0;}
void __init comedi_proc_init(void){ if (!proc_create_single("comedi", 0444, NULL, comedi_read)) pr_warn("comedi: unable to create proc entry\n");}
void comedi_proc_cleanup(void){ remove_proc_entry("comedi", NULL);}