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8ffdff6a8c
The comedi code came into the kernel back in 2008, but traces its lifetime to much much earlier. It's been polished and buffed and there's really nothing preventing it from being part of the "real" portion of the kernel. So move it to drivers/comedi/ as it belongs there. Many thanks to the hundreds of developers who did the work to make this happen. Cc: Ian Abbott <abbotti@mev.co.uk> Cc: H Hartley Sweeten <hsweeten@visionengravers.com> Link: https://lore.kernel.org/r/YHauop4u3sP6lz8j@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* /proc interface for comedi
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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*/
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/*
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* This is some serious bloatware.
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*
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* Taken from Dave A.'s PCL-711 driver, 'cuz I thought it
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* was cool.
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*/
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#include "comedidev.h"
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#include "comedi_internal.h"
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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static int comedi_read(struct seq_file *m, void *v)
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{
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int i;
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int devices_q = 0;
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struct comedi_driver *driv;
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seq_printf(m, "comedi version " COMEDI_RELEASE "\nformat string: %s\n",
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"\"%2d: %-20s %-20s %4d\", i, driver_name, board_name, n_subdevices");
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for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) {
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struct comedi_device *dev = comedi_dev_get_from_minor(i);
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if (!dev)
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continue;
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down_read(&dev->attach_lock);
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if (dev->attached) {
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devices_q = 1;
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seq_printf(m, "%2d: %-20s %-20s %4d\n",
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i, dev->driver->driver_name,
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dev->board_name, dev->n_subdevices);
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}
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up_read(&dev->attach_lock);
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comedi_dev_put(dev);
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}
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if (!devices_q)
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seq_puts(m, "no devices\n");
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mutex_lock(&comedi_drivers_list_lock);
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for (driv = comedi_drivers; driv; driv = driv->next) {
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seq_printf(m, "%s:\n", driv->driver_name);
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for (i = 0; i < driv->num_names; i++)
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seq_printf(m, " %s\n",
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*(char **)((char *)driv->board_name +
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i * driv->offset));
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if (!driv->num_names)
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seq_printf(m, " %s\n", driv->driver_name);
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}
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mutex_unlock(&comedi_drivers_list_lock);
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return 0;
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}
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void __init comedi_proc_init(void)
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{
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if (!proc_create_single("comedi", 0444, NULL, comedi_read))
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pr_warn("comedi: unable to create proc entry\n");
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}
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void comedi_proc_cleanup(void)
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{
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remove_proc_entry("comedi", NULL);
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}
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