130 lines
3.6 KiB
C
Executable file
130 lines
3.6 KiB
C
Executable file
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* ALSA SoC - Samsung Abox Proc FS driver
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*
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* Copyright (c) 2020 Samsung Electronics Co. Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __SND_SOC_ABOX_PROC_H
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#define __SND_SOC_ABOX_PROC_H
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#include <linux/proc_fs.h>
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struct abox_proc_bin {
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void *data;
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size_t size;
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};
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/**
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* Get given data of the file
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* @param[in] file pointer to file entry
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* @return data which is given at registration
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*/
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extern void *abox_proc_data(const struct file *file);
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/**
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* Make a directory
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* @param[in] name name of the directory
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* @param[in] parent parent of the directory
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* @return entry to the directory
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*/
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extern struct proc_dir_entry *abox_proc_mkdir(const char *name,
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struct proc_dir_entry *parent);
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/**
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* Remove a file or directory
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* @param[in] pde entry to the directory which will be deleted
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*/
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extern void abox_proc_remove_file(struct proc_dir_entry *pde);
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/**
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* Create a file
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* @param[in] name name of a file
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* @param[in] mode access mode
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* @param[in] parent parent of the file
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* @param[in] fops file operations
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* @param[in] data private data
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* @param[in] size size of the file. set it 0 if unsure
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* @return entry to the file
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*/
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extern struct proc_dir_entry *abox_proc_create_file(const char *name,
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umode_t mode, struct proc_dir_entry *parent,
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const struct proc_ops *fops, void *data, size_t size);
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/**
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* Create a binary file
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* @param[in] name name of a file
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* @param[in] mode access mode
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* @param[in] parent parent of the file
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* @param[in] bin definition of the binary file
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* @return entry to the file
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*/
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extern struct proc_dir_entry *abox_proc_create_bin(const char *name,
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umode_t mode, struct proc_dir_entry *parent,
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struct abox_proc_bin *bin);
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/**
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* Create a unsigned 64bit attribute file
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* @param[in] name name of a file
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* @param[in] mode access mode
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* @param[in] parent parent of the file
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* @param[in] data pointer to the unsigned 64bit value
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* @return entry to the file
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*/
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extern struct proc_dir_entry *abox_proc_create_u64(const char *name,
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umode_t mode, struct proc_dir_entry *parent, u64 *data);
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/**
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* Create a unsigned 32bit attribute file
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* @param[in] name name of a file
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* @param[in] mode access mode
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* @param[in] parent parent of the file
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* @param[in] data pointer to the unsigned 64bit value
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* @return entry to the file
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*/
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extern struct proc_dir_entry *abox_proc_create_u32(const char *name,
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umode_t mode, struct proc_dir_entry *parent, u32 *data);
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/**
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* Create a boolean attribute file
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* @param[in] name name of a file
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* @param[in] mode access mode
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* @param[in] parent parent of the file
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* @param[in] data pointer to the boolean value
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* @return entry to the file
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*/
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extern struct proc_dir_entry *abox_proc_create_bool(const char *name,
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umode_t mode, struct proc_dir_entry *parent, bool *data);
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/**
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* Create a symbolic link to a device attribute
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* @param[in] dev pointer to the device
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* @param[in] name name of the attribute
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* @param[in] parent parent of the file
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* @return error code or 0
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*/
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extern int abox_proc_symlink_attr(struct device *dev, const char *name,
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struct proc_dir_entry *parent);
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/**
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* Create a symbolic link to a sysfs
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* @param[in] dev pointer to the device
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* @param[in] name name of the attribute
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* @return error code or 0
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*/
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extern int abox_proc_symlink_dev(struct device *dev, const char *name);
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/**
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* Initialize abox_proc
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*/
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extern int abox_proc_probe(void);
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/**
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* Destroy abox_proc
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*/
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extern void abox_proc_remove(void);
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#endif /* __SND_SOC_ABOX_PROC_H */
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