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>

1 files changed, 192 insertions, 0 deletions

diff --git a/drivers/staging/comedi/comedilib.h b/drivers/staging/comedi/comedilib.h
new file mode 100644
index 00000000000..e381389524d
--- /dev/null
+++ b/drivers/staging/comedi/comedilib.h
@@ -0,0 +1,192 @@
+/*
+    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