Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* comedilib.h
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* Header file for kcomedilib
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
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*/
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#ifndef _LINUX_COMEDILIB_H
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#define _LINUX_COMEDILIB_H
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struct comedi_device *comedi_open_from(const char *path, int from);
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/**
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* comedi_open() - Open a COMEDI device from the kernel
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* @filename: Fake pathname of the form "/dev/comediN".
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*
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* Converts @filename to a COMEDI device number and "opens" it if it exists
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* and is attached to a low-level COMEDI driver.
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*
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* Return: A pointer to the COMEDI device on success.
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* Return %NULL on failure.
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*/
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static inline struct comedi_device *comedi_open(const char *path)
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{
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return comedi_open_from(path, -1);
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}
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int comedi_close_from(struct comedi_device *dev, int from);
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/**
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* comedi_close() - Close a COMEDI device from the kernel
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* @dev: COMEDI device.
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*
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* Closes a COMEDI device previously opened by comedi_open().
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*
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* Returns: 0
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*/
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static inline int comedi_close(struct comedi_device *dev)
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{
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return comedi_close_from(dev, -1);
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}
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int comedi_dio_get_config(struct comedi_device *dev, unsigned int subdev,
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unsigned int chan, unsigned int *io);
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int comedi_dio_config(struct comedi_device *dev, unsigned int subdev,
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unsigned int chan, unsigned int io);
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int comedi_dio_bitfield2(struct comedi_device *dev, unsigned int subdev,
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unsigned int mask, unsigned int *bits,
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unsigned int base_channel);
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int comedi_find_subdevice_by_type(struct comedi_device *dev, int type,
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unsigned int subd);
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int comedi_get_n_channels(struct comedi_device *dev, unsigned int subdevice);
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#endif
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