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     ˆÃÂƒ­·ÁÀÄ Û    /* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Sony Programmable I/O Control Device driver for VAIO
 *
 * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
 *
 * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>

 * Copyright (C) 2001-2002 AlcÃ´ve <www.alcove.com>
 *
 * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
 *
 * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
 *
 * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
 *
 * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
 *
 * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
 */
#ifndef _SONYPI_H_
#define _SONYPI_H_

#include <uapi/linux/sonypi.h>


/* used only for communication between v4l and sonypi */

#define SONYPI_COMMAND_GETCAMERA		 1	/* obsolete */
#define SONYPI_COMMAND_SETCAMERA		 2
#define SONYPI_COMMAND_GETCAMERABRIGHTNESS	 3	/* obsolete */
#define SONYPI_COMMAND_SETCAMERABRIGHTNESS	 4
#define SONYPI_COMMAND_GETCAMERACONTRAST	 5	/* obsolete */
#define SONYPI_COMMAND_SETCAMERACONTRAST	 6
#define SONYPI_COMMAND_GETCAMERAHUE		 7	/* obsolete */
#define SONYPI_COMMAND_SETCAMERAHUE		 8
#define SONYPI_COMMAND_GETCAMERACOLOR		 9	/* obsolete */
#define SONYPI_COMMAND_SETCAMERACOLOR		10
#define SONYPI_COMMAND_GETCAMERASHARPNESS	11	/* obsolete */
#define SONYPI_COMMAND_SETCAMERASHARPNESS	12
#define SONYPI_COMMAND_GETCAMERAPICTURE		13	/* obsolete */
#define SONYPI_COMMAND_SETCAMERAPICTURE		14
#define SONYPI_COMMAND_GETCAMERAAGC		15	/* obsolete */
#define SONYPI_COMMAND_SETCAMERAAGC		16
#define SONYPI_COMMAND_GETCAMERADIRECTION	17	/* obsolete */
#define SONYPI_COMMAND_GETCAMERAROMVERSION	18	/* obsolete */
#define SONYPI_COMMAND_GETCAMERAREVISION	19	/* obsolete */

#endif				/* _SONYPI_H_ */
     ˆÃÂ„ßÁÀÄ ?÷     /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * kernfs.h - pseudo filesystem decoupled from vfs locking
 */

#ifndef __LINUX_KERNFS_H
#define __LINUX_KERNFS_H

#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/idr.h>
#include <linux/lockdep.h>
#include <linux/rbtree.h>
#include <linux/atomic.h>
#include <linux/uidgid.h>
#include <linux/wait.h>
#include <linux/rwsem.h>
#include <linux/cache.h>

struct file;
struct dentry;
struct iattr;
struct seq_file;
struct vm_area_struct;
struct super_block;
struct file_system_type;
struct poll_table_struct;
struct fs_context;

struct kernfs_fs_context;
struct kernfs_open_node;
struct kernfs_iattrs;

/*
 * NR_KERNFS_LOCK_BITS determines size (NR_KERNFS_LOCKS) of hash
 * table of locks.
 * Having a small hash table would impact scalability, since
 * more and more kernfs_node objects will end up using same lock
 * and having a very large hash table would waste memory.
 *
 * At the moment size of hash table of locks is being set based on
 * the number of CPUs as follows:
 *
 * NR_CPU      NR_KERNFS_LOCK_BITS      NR_KERNFS_LOCKS
 *   1                  1                       2
 *  2-3                 2                       4
 *  4-7                 4                       16
 *  8-15                6                       64
 *  16-31               8                       256
 *  32 and more         10                      1024
 *
 * The above relation between NR_CPU and number of locks is based
 * on some internal experimentation which involved booting qemu
 * with different values of smp, performing some sysfs operations
 * on all CPUs and observing how increase in number of locks impacts
 * completion time of these sysfs operations on each CPU.
 */
#ifdef CONFIG_SMP
#define NR_KERNFS_LOCK_BITS (2 * (ilog2(NR_CPUS < 32 ? NR_CPUS : 32)))
#else
#define NR_KERNFS_LOCK_BITS     1
#endif

#define NR_KERNFS_LOCKS     (1 << NR_KERNFS_LOCK_BITS)

/*
 * There's one kernfs_open_file for each open file and one kernfs_open_node
 * for each kernfs_node with one or more open files.
 *
 * filp->private_data points to seq_file whose ->private points to
 * kernfs_open_file.
 *
 * kernfs_open_files are chained at kernfs_open_node->files, which is
 * pr