Staging: add comedi core

This adds the Comedi core to the staging tree.
This is a data acquision infrastructure for Linux, providing a common
interface for these types of drivers.

Taken directly from the comedi git tree, with only minor tweaks
by Greg to get it to build properly within the kernel tree.

From: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Shawn Bohrer <shawn.bohrer@gmail.com>
Signed-off-by: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/Kconfig

@@ -71,5 +71,7 @@ source "drivers/staging/rt2860/Kconfig"
 
 source "drivers/staging/benet/Kconfig"
 
+source "drivers/staging/comedi/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING

drivers/staging/Makefile

@@ -18,3 +18,4 @@ obj-$(CONFIG_AGNX)		+= agnx/
 obj-$(CONFIG_OTUS)		+= otus/
 obj-$(CONFIG_RT2860)		+= rt2860/
 obj-$(CONFIG_BENET)		+= benet/
+obj-$(CONFIG_COMEDI)		+= comedi/

drivers/staging/comedi/Kconfig

+config COMEDI
+	tristate "Data Acquision support (comedi)"
+	default N
+	---help---
+	  Enable support a wide range of data acquision devices
+	  for Linux.
+
+config COMEDI_RT
+	tristate "Comedi Real-time support"
+	depends on COMEDI && RT
+	default N
+	---help---
+	  Enable Real time support for the Comedi core.

drivers/staging/comedi/Makefile

+obj-$(CONFIG_COMEDI) += comedi.o
+obj-$(CONFIG_COMEDI_RT) += comedi_rt.o
+
+comedi-objs :=		\
+	comedi_fops.o	\
+	proc.o		\
+	range.o		\
+	drivers.o	\
+	comedi_compat32.o \
+	comedi_ksyms.o	\
+
+comedi_rt-objs :=	\
+	rt_pend_tq.o	\
+	rt.o

drivers/staging/comedi/TODO

+TODO:
+	- checkpatch.pl cleanups
+	- Lindent
+	- remove all wrappers
+	- remove typedefs
+	- audit userspace interface
+	- reserve major number
+	- cleanup the individual comedi drivers as well
+
+Please send patches to Greg Kroah-Hartman <greg@kroah.com> and
+copy:
+	Ian Abbott <abbotti@mev.co.uk>
+	Frank Mori Hess <fmhess@users.sourceforge.net>
+	David Schleef <ds@schleef.org>

drivers/staging/comedi/comedi_compat32.h

+/*
+    comedi/comedi_compat32.h
+    32-bit ioctl compatibility for 64-bit comedi kernel module.
+
+    Author: Ian Abbott, MEV Ltd. <abbotti@mev.co.uk>
+    Copyright (C) 2007 MEV Ltd. <http://www.mev.co.uk/>
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1997-2007 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.
+
+*/
+
+#ifndef _COMEDI_COMPAT32_H
+#define _COMEDI_COMPAT32_H
+
+#include <linux/compat.h>
+#include <linux/fs.h>	/* For HAVE_COMPAT_IOCTL and HAVE_UNLOCKED_IOCTL */
+
+#ifdef CONFIG_COMPAT
+
+#ifdef HAVE_COMPAT_IOCTL
+
+extern long comedi_compat_ioctl(struct file *file, unsigned int cmd,
+		unsigned long arg);
+#define comedi_register_ioctl32() do{}while(0)
+#define comedi_unregister_ioctl32() do{}while(0)
+
+#else /* HAVE_COMPAT_IOCTL */
+
+#define comedi_compat_ioctl 0	/* NULL */
+extern void comedi_register_ioctl32(void);
+extern void comedi_unregister_ioctl32(void);
+
+#endif /* HAVE_COMPAT_IOCTL */
+
+#else /* CONFIG_COMPAT */
+
+#define comedi_compat_ioctl 0	/* NULL */
+#define comedi_register_ioctl32() do{}while(0)
+#define comedi_unregister_ioctl32() do{}while(0)
+
+#endif /* CONFIG_COMPAT */
+
+#endif /* _COMEDI_COMPAT32_H */

drivers/staging/comedi/comedi_fops.h

+
+#ifndef _COMEDI_FOPS_H
+#define _COMEDI_FOPS_H
+
+extern struct class *comedi_class;
+extern const struct file_operations comedi_fops;
+
+#endif //_COMEDI_FOPS_H

drivers/staging/comedi/comedi_ksyms.c

+/*
+    module/exp_ioctl.c
+    exported comedi functions
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1997-8 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.
+
+*/
+
+#define __NO_VERSION__
+#ifndef EXPORT_SYMTAB
+#define EXPORT_SYMTAB
+#endif
+
+#include "comedidev.h"
+
+/* for drivers */
+EXPORT_SYMBOL(comedi_driver_register);
+EXPORT_SYMBOL(comedi_driver_unregister);
+//EXPORT_SYMBOL(comedi_bufcheck);
+//EXPORT_SYMBOL(comedi_done);
+//EXPORT_SYMBOL(comedi_error_done);
+EXPORT_SYMBOL(comedi_error);
+//EXPORT_SYMBOL(comedi_eobuf);
+//EXPORT_SYMBOL(comedi_eos);
+EXPORT_SYMBOL(comedi_event);
+EXPORT_SYMBOL(comedi_get_subdevice_runflags);
+EXPORT_SYMBOL(comedi_set_subdevice_runflags);
+EXPORT_SYMBOL(range_bipolar10);
+EXPORT_SYMBOL(range_bipolar5);
+EXPORT_SYMBOL(range_bipolar2_5);
+EXPORT_SYMBOL(range_unipolar10);
+EXPORT_SYMBOL(range_unipolar5);
+EXPORT_SYMBOL(range_unknown);
+#ifdef CONFIG_COMEDI_RT
+EXPORT_SYMBOL(comedi_free_irq);
+EXPORT_SYMBOL(comedi_request_irq);
+EXPORT_SYMBOL(comedi_switch_to_rt);
+EXPORT_SYMBOL(comedi_switch_to_non_rt);
+EXPORT_SYMBOL(rt_pend_call);
+#endif
+#ifdef CONFIG_COMEDI_DEBUG
+EXPORT_SYMBOL(comedi_debug);
+#endif
+EXPORT_SYMBOL_GPL(comedi_alloc_board_minor);
+EXPORT_SYMBOL_GPL(comedi_free_board_minor);
+EXPORT_SYMBOL_GPL(comedi_pci_auto_config);
+EXPORT_SYMBOL_GPL(comedi_pci_auto_unconfig);
+
+/* for kcomedilib */
+EXPORT_SYMBOL(check_chanlist);
+EXPORT_SYMBOL_GPL(comedi_get_device_file_info);
+
+EXPORT_SYMBOL(comedi_buf_put);
+EXPORT_SYMBOL(comedi_buf_get);
+EXPORT_SYMBOL(comedi_buf_read_n_available);
+EXPORT_SYMBOL(comedi_buf_write_free);
+EXPORT_SYMBOL(comedi_buf_write_alloc);
+EXPORT_SYMBOL(comedi_buf_read_free);
+EXPORT_SYMBOL(comedi_buf_read_alloc);
+EXPORT_SYMBOL(comedi_buf_memcpy_to);
+EXPORT_SYMBOL(comedi_buf_memcpy_from);
+EXPORT_SYMBOL(comedi_reset_async_buf);

drivers/staging/comedi/comedi_rt.h

+/*
+    module/comedi_rt.h
+    header file for real-time structures, variables, and constants
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1997-2000 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.
+
+*/
+
+#ifndef _COMEDI_RT_H
+#define _COMEDI_RT_H
+
+#ifndef _COMEDIDEV_H
+#error comedi_rt.h should only be included by comedidev.h
+#endif
+
+#include <linux/version.h>
+#include <linux/kdev_t.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+
+#ifdef CONFIG_COMEDI_RT
+
+#ifdef CONFIG_COMEDI_RTAI
+#include <rtai.h>
+#include <rtai_sched.h>
+#include <rtai_version.h>
+#endif
+#ifdef CONFIG_COMEDI_RTL
+#include <rtl_core.h>
+#include <rtl_time.h>
+//#ifdef RTLINUX_VERSION_CODE
+#include <rtl_sync.h>
+//#endif
+#define rt_printk rtl_printf
+#endif
+#ifdef CONFIG_COMEDI_FUSION
+#define rt_printk(format, args...) printk(format , ## args )
+#endif /* CONFIG_COMEDI_FUSION */
+#ifdef CONFIG_PRIORITY_IRQ
+#define rt_printk printk
+#endif
+
+int comedi_request_irq(unsigned int irq, irqreturn_t(*handler) (int,
+		void *PT_REGS_ARG), unsigned long flags, const char *device,
+	comedi_device * dev_id);
+void comedi_free_irq(unsigned int irq, comedi_device * dev_id);
+void comedi_rt_init(void);
+void comedi_rt_cleanup(void);
+int comedi_switch_to_rt(comedi_device * dev);
+void comedi_switch_to_non_rt(comedi_device * dev);
+void comedi_rt_pend_wakeup(wait_queue_head_t * q);
+extern int rt_pend_call(void (*func) (int arg1, void *arg2), int arg1,
+	void *arg2);
+
+#else
+
+#define comedi_request_irq(a,b,c,d,e) request_irq(a,b,c,d,e)
+#define comedi_free_irq(a,b) free_irq(a,b)
+#define comedi_rt_init() do{}while(0)
+#define comedi_rt_cleanup() do{}while(0)
+#define comedi_switch_to_rt(a) (-1)
+#define comedi_switch_to_non_rt(a) do{}while(0)
+#define comedi_rt_pend_wakeup(a) do{}while(0)
+
+#define rt_printk(format,args...)	printk(format,##args)
+
+#endif
+
+/* Define a spin_lock_irqsave function that will work with rt or without.
+ * Use inline functions instead of just macros to enforce some type checking.
+ */
+#define comedi_spin_lock_irqsave(lock_ptr, flags) \
+	(flags = __comedi_spin_lock_irqsave(lock_ptr))
+
+static inline unsigned long __comedi_spin_lock_irqsave(spinlock_t * lock_ptr)
+{
+	unsigned long flags;
+
+#if defined(CONFIG_COMEDI_RTAI)
+	flags = rt_spin_lock_irqsave(lock_ptr);
+
+#elif defined(CONFIG_COMEDI_RTL)
+	rtl_spin_lock_irqsave(lock_ptr, flags);
+
+#elif defined(CONFIG_COMEDI_RTL_V1)
+	rtl_spin_lock_irqsave(lock_ptr, flags);
+
+#elif defined(CONFIG_COMEDI_FUSION)
+	rthal_spin_lock_irqsave(lock_ptr, flags);
+#else
+	spin_lock_irqsave(lock_ptr, flags);
+
+#endif
+
+	return flags;
+}
+
+static inline void comedi_spin_unlock_irqrestore(spinlock_t * lock_ptr,
+	unsigned long flags)
+{
+
+#if defined(CONFIG_COMEDI_RTAI)
+	rt_spin_unlock_irqrestore(flags, lock_ptr);
+
+#elif defined(CONFIG_COMEDI_RTL)
+	rtl_spin_unlock_irqrestore(lock_ptr, flags);
+
+#elif defined(CONFIG_COMEDI_RTL_V1)
+	rtl_spin_unlock_irqrestore(lock_ptr, flags);
+#elif defined(CONFIG_COMEDI_FUSION)
+	rthal_spin_unlock_irqrestore(lock_ptr, flags);
+#else
+	spin_unlock_irqrestore(lock_ptr, flags);
+
+#endif
+
+}
+
+/* define a RT safe udelay */
+static inline void comedi_udelay(unsigned int usec)
+{
+#if defined(CONFIG_COMEDI_RTAI)
+	static const int nanosec_per_usec = 1000;
+	rt_busy_sleep(usec * nanosec_per_usec);
+#elif defined(CONFIG_COMEDI_RTL)
+	static const int nanosec_per_usec = 1000;
+	rtl_delay(usec * nanosec_per_usec);
+#else
+	udelay(usec);
+#endif
+}
+
+#endif

drivers/staging/comedi/comedilib.h

+/*
+    linux/include/comedilib.h
+    header file for kcomedilib
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1998-2001 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.
+
+*/
+
+#ifndef _LINUX_COMEDILIB_H
+#define _LINUX_COMEDILIB_H
+
+#include <linux/comedi.h>
+
+/* Kernel internal stuff.  Needed by real-time modules and such. */
+
+#ifndef __KERNEL__
+#error linux/comedilib.h should not be included by non-kernel-space code
+#endif
+
+/* exported functions */
+
+#ifndef KCOMEDILIB_DEPRECATED
+
+typedef void comedi_t;
+
+/* these functions may not be called at real-time priority */
+
+comedi_t *comedi_open(const char *path);
+int comedi_close(comedi_t * dev);
+
+/* these functions may be called at any priority, but may fail at
+   real-time priority */
+
+int comedi_lock(comedi_t * dev, unsigned int subdev);
+int comedi_unlock(comedi_t * dev, unsigned int subdev);
+
+/* these functions may be called at any priority, but you must hold
+   the lock for the subdevice */
+
+int comedi_loglevel(int loglevel);
+void comedi_perror(const char *s);
+char *comedi_strerror(int errnum);
+int comedi_errno(void);
+int comedi_fileno(comedi_t * dev);
+
+int comedi_cancel(comedi_t * dev, unsigned int subdev);
+int comedi_register_callback(comedi_t * dev, unsigned int subdev,
+	unsigned int mask, int (*cb) (unsigned int, void *), void *arg);
+
+int comedi_command(comedi_t * dev, comedi_cmd * cmd);
+int comedi_command_test(comedi_t * dev, comedi_cmd * cmd);
+int comedi_trigger(comedi_t * dev, unsigned int subdev, comedi_trig * it);
+int __comedi_trigger(comedi_t * dev, unsigned int subdev, comedi_trig * it);
+int comedi_data_write(comedi_t * dev, unsigned int subdev, unsigned int chan,
+	unsigned int range, unsigned int aref, lsampl_t data);
+int comedi_data_read(comedi_t * dev, unsigned int subdev, unsigned int chan,
+	unsigned int range, unsigned int aref, lsampl_t * data);
+int comedi_data_read_hint(comedi_t * dev, unsigned int subdev,
+	unsigned int chan, unsigned int range, unsigned int aref);
+int comedi_data_read_delayed(comedi_t * dev, unsigned int subdev,
+	unsigned int chan, unsigned int range, unsigned int aref,
+	lsampl_t * data, unsigned int nano_sec);
+int comedi_dio_config(comedi_t * dev, unsigned int subdev, unsigned int chan,
+	unsigned int io);
+int comedi_dio_read(comedi_t * dev, unsigned int subdev, unsigned int chan,
+	unsigned int *val);
+int comedi_dio_write(comedi_t * dev, unsigned int subdev, unsigned int chan,
+	unsigned int val);
+int comedi_dio_bitfield(comedi_t * dev, unsigned int subdev, unsigned int mask,
+	unsigned int *bits);
+int comedi_get_n_subdevices(comedi_t * dev);
+int comedi_get_version_code(comedi_t * dev);
+const char *comedi_get_driver_name(comedi_t * dev);
+const char *comedi_get_board_name(comedi_t * dev);
+int comedi_get_subdevice_type(comedi_t * dev, unsigned int subdevice);
+int comedi_find_subdevice_by_type(comedi_t * dev, int type, unsigned int subd);
+int comedi_get_n_channels(comedi_t * dev, unsigned int subdevice);
+lsampl_t comedi_get_maxdata(comedi_t * dev, unsigned int subdevice, unsigned
+	int chan);
+int comedi_get_n_ranges(comedi_t * dev, unsigned int subdevice, unsigned int
+	chan);
+int comedi_do_insn(comedi_t * dev, comedi_insn * insn);
+int comedi_poll(comedi_t * dev, unsigned int subdev);
+
+/* DEPRECATED functions */
+int comedi_get_rangetype(comedi_t * dev, unsigned int subdevice,
+	unsigned int chan);
+
+/* ALPHA functions */
+unsigned int comedi_get_subdevice_flags(comedi_t * dev, unsigned int subdevice);
+int comedi_get_len_chanlist(comedi_t * dev, unsigned int subdevice);
+int comedi_get_krange(comedi_t * dev, unsigned int subdevice, unsigned int
+	chan, unsigned int range, comedi_krange * krange);
+unsigned int comedi_get_buf_head_pos(comedi_t * dev, unsigned int subdevice);
+int comedi_set_user_int_count(comedi_t * dev, unsigned int subdevice,
+	unsigned int buf_user_count);
+int comedi_map(comedi_t * dev, unsigned int subdev, void *ptr);
+int comedi_unmap(comedi_t * dev, unsigned int subdev);
+int comedi_get_buffer_size(comedi_t * dev, unsigned int subdev);
+int comedi_mark_buffer_read(comedi_t * dev, unsigned int subdevice,
+	unsigned int num_bytes);
+int comedi_mark_buffer_written(comedi_t * d, unsigned int subdevice,
+	unsigned int num_bytes);
+int comedi_get_buffer_contents(comedi_t * dev, unsigned int subdevice);
+int comedi_get_buffer_offset(comedi_t * dev, unsigned int subdevice);
+
+#else
+
+/* these functions may not be called at real-time priority */
+
+int comedi_open(unsigned int minor);
+void comedi_close(unsigned int minor);
+
+/* these functions may be called at any priority, but may fail at
+   real-time priority */
+
+int comedi_lock(unsigned int minor, unsigned int subdev);
+int comedi_unlock(unsigned int minor, unsigned int subdev);
+
+/* these functions may be called at any priority, but you must hold
+   the lock for the subdevice */
+
+int comedi_cancel(unsigned int minor, unsigned int subdev);
+int comedi_register_callback(unsigned int minor, unsigned int subdev,
+	unsigned int mask, int (*cb) (unsigned int, void *), void *arg);
+
+int comedi_command(unsigned int minor, comedi_cmd * cmd);
+int comedi_command_test(unsigned int minor, comedi_cmd * cmd);
+int comedi_trigger(unsigned int minor, unsigned int subdev, comedi_trig * it);
+int __comedi_trigger(unsigned int minor, unsigned int subdev, comedi_trig * it);
+int comedi_data_write(unsigned int dev, unsigned int subdev, unsigned int chan,
+	unsigned int range, unsigned int aref, lsampl_t data);
+int comedi_data_read(unsigned int dev, unsigned int subdev, unsigned int chan,
+	unsigned int range, unsigned int aref, lsampl_t * data);
+int comedi_dio_config(unsigned int dev, unsigned int subdev, unsigned int chan,
+	unsigned int io);
+int comedi_dio_read(unsigned int dev, unsigned int subdev, unsigned int chan,
+	unsigned int *val);
+int comedi_dio_write(unsigned int dev, unsigned int subdev, unsigned int chan,
+	unsigned int val);
+int comedi_dio_bitfield(unsigned int dev, unsigned int subdev,
+	unsigned int mask, unsigned int *bits);
+int comedi_get_n_subdevices(unsigned int dev);
+int comedi_get_version_code(unsigned int dev);
+char *comedi_get_driver_name(unsigned int dev);
+char *comedi_get_board_name(unsigned int minor);
+int comedi_get_subdevice_type(unsigned int minor, unsigned int subdevice);
+int comedi_find_subdevice_by_type(unsigned int minor, int type,
+	unsigned int subd);
+int comedi_get_n_channels(unsigned int minor, unsigned int subdevice);
+lsampl_t comedi_get_maxdata(unsigned int minor, unsigned int subdevice, unsigned
+	int chan);
+int comedi_get_n_ranges(unsigned int minor, unsigned int subdevice, unsigned int
+	chan);
+int comedi_do_insn(unsigned int minor, comedi_insn * insn);
+int comedi_poll(unsigned int minor, unsigned int subdev);
+
+/* DEPRECATED functions */
+int comedi_get_rangetype(unsigned int minor, unsigned int subdevice,
+	unsigned int chan);
+
+/* ALPHA functions */
+unsigned int comedi_get_subdevice_flags(unsigned int minor, unsigned int
+	subdevice);
+int comedi_get_len_chanlist(unsigned int minor, unsigned int subdevice);
+int comedi_get_krange(unsigned int minor, unsigned int subdevice, unsigned int
+	chan, unsigned int range, comedi_krange * krange);
+unsigned int comedi_get_buf_head_pos(unsigned int minor, unsigned int
+	subdevice);
+int comedi_set_user_int_count(unsigned int minor, unsigned int subdevice,
+	unsigned int buf_user_count);
+int comedi_map(unsigned int minor, unsigned int subdev, void **ptr);
+int comedi_unmap(unsigned int minor, unsigned int subdev);
+
+#endif
+
+#endif

drivers/staging/comedi/proc.c

+/*
+    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 <linux/proc_fs.h>
+//#include <linux/string.h>
+
+int comedi_read_procmem(char *buf, char **start, off_t offset, int len,
+	int *eof, void *data);
+
+extern comedi_driver *comedi_drivers;
+
+int comedi_read_procmem(char *buf, char **start, off_t offset, int len,
+	int *eof, void *data)
+{
+	int i;
+	int devices_q = 0;
+	int l = 0;
+	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);
+		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, 0);
+	if (comedi_proc)
+		comedi_proc->read_proc = comedi_read_procmem;
+}
+
+void comedi_proc_cleanup(void)
+{
+	remove_proc_entry("comedi", 0);
+}

drivers/staging/comedi/rt_pend_tq.h

+#define RT_PEND_TQ_SIZE 16
+struct rt_pend_tq {
+	void (*func) (int arg1, void *arg2);
+	int arg1;
+	void *arg2;
+};
+extern int rt_pend_call(void (*func) (int arg1, void *arg2), int arg1,
+	void *arg2);
+extern int rt_pend_tq_init(void);
+extern void rt_pend_tq_cleanup(void);

drivers/staging/comedi/wrapper.h

+/*
+    linux/wrapper.h compatibility header
+
+    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.
+ */
+
+#ifndef __COMPAT_LINUX_WRAPPER_H_
+#define __COMPAT_LINUX_WRAPPER_H_
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
+#define mem_map_reserve(p)      set_bit(PG_reserved, &((p)->flags))
+#define mem_map_unreserve(p)    clear_bit(PG_reserved, &((p)->flags))
+#else
+#include_next <linux/wrapper.h>
+#endif
+
+#endif /* __COMPAT_LINUX_WRAPPER_H_ */