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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/drivers/comedi/comedi_internal.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _COMEDI_INTERNAL_H

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#define _COMEDI_INTERNAL_H

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#include <linux/compiler.h>

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#include <linux/types.h>

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/*

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 * various internal comedi stuff

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 */

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struct comedi_buf_map;

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struct comedi_devconfig;

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struct comedi_device;

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struct comedi_insn;

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struct comedi_rangeinfo;

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struct comedi_subdevice;

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struct device;

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int do_rangeinfo_ioctl(struct comedi_device *dev,

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		       struct comedi_rangeinfo *it);

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struct comedi_device *comedi_alloc_board_minor(struct device *hardware_device);

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void comedi_release_hardware_device(struct device *hardware_device);

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int comedi_alloc_subdevice_minor(struct comedi_subdevice *s);

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void comedi_free_subdevice_minor(struct comedi_subdevice *s);

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int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,

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		     unsigned long new_size);

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void comedi_buf_reset(struct comedi_subdevice *s);

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bool comedi_buf_is_mmapped(struct comedi_subdevice *s);

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void comedi_buf_map_get(struct comedi_buf_map *bm);

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int comedi_buf_map_put(struct comedi_buf_map *bm);

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int comedi_buf_map_access(struct comedi_buf_map *bm, unsigned long offset,

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			  void *buf, int len, int write);

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struct comedi_buf_map *

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comedi_buf_map_from_subdev_get(struct comedi_subdevice *s);

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unsigned int comedi_buf_write_n_available(struct comedi_subdevice *s);

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unsigned int comedi_buf_write_n_allocated(struct comedi_subdevice *s);

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unsigned int _comedi_buf_write_alloc(struct comedi_subdevice *s,

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				     unsigned int nbytes);

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unsigned int _comedi_buf_write_free(struct comedi_subdevice *s,

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				    unsigned int nbytes);

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unsigned int _comedi_buf_read_n_available(struct comedi_subdevice *s);

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unsigned int _comedi_buf_read_alloc(struct comedi_subdevice *s,

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				    unsigned int nbytes);

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unsigned int _comedi_buf_read_free(struct comedi_subdevice *s,

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				   unsigned int nbytes);

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void _comedi_inc_scan_progress(struct comedi_subdevice *s,

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			       unsigned int num_bytes);

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void _comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);

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void comedi_device_cancel_all(struct comedi_device *dev);

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bool comedi_can_auto_free_spriv(struct comedi_subdevice *s);

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extern unsigned int comedi_default_buf_size_kb;

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extern unsigned int comedi_default_buf_maxsize_kb;

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/* drivers.c */

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extern struct comedi_driver *comedi_drivers;

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extern struct mutex comedi_drivers_list_lock;

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int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s,

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	       struct comedi_insn *insn, unsigned int *data);

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void comedi_device_detach_locked(struct comedi_device *dev);

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void comedi_device_detach(struct comedi_device *dev);

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int comedi_device_attach(struct comedi_device *dev,

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			 struct comedi_devconfig *it);

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#ifdef CONFIG_PROC_FS

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/* proc.c */

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void comedi_proc_init(void);

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void comedi_proc_cleanup(void);

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#else

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static inline void comedi_proc_init(void)

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{

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}

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static inline void comedi_proc_cleanup(void)

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{

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}

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#endif

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#endif /* _COMEDI_INTERNAL_H */

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