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/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/media/

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/media

Name	Size	Mode	Actions
davinci/	-	0755	rm
drv-intf/	-	0755	rm
i2c/	-	0755	rm
tpg/	-	0755	rm
cec-notifier.h	6678	0644	edit dl rm
cec-pin.h	2947	0644	edit dl rm
cec.h	18397	0644	edit dl rm
demux.h	23237	0644	edit dl rm
dmxdev.h	6034	0644	edit dl rm
dvb-usb-ids.h	18204	0644	edit dl rm
dvbdev.h	15089	0644	edit dl rm
dvb_ca_en50221.h	4455	0644	edit dl rm
dvb_demux.h	11033	0644	edit dl rm
dvb_frontend.h	29701	0644	edit dl rm
dvb_math.h	1811	0644	edit dl rm
dvb_net.h	2583	0644	edit dl rm
dvb_ringbuffer.h	8524	0644	edit dl rm
dvb_vb2.h	7838	0644	edit dl rm
frame_vector.h	1447	0644	edit dl rm
imx.h	396	0644	edit dl rm
media-device.h	16113	0644	edit dl rm
media-devnode.h	5814	0644	edit dl rm
media-entity.h	35421	0644	edit dl rm
rc-core.h	13211	0644	edit dl rm
rc-map.h	12806	0644	edit dl rm
rcar-fcp.h	1342	0644	edit dl rm
soc_camera.h	13300	0644	edit dl rm
tuner-types.h	7723	0644	edit dl rm
tuner.h	9059	0644	edit dl rm
tveeprom.h	3370	0644	edit dl rm
v4l2-async.h	7649	0644	edit dl rm
v4l2-clk.h	2144	0644	edit dl rm
v4l2-common.h	16538	0644	edit dl rm
v4l2-ctrls.h	39942	0644	edit dl rm
v4l2-dev.h	16109	0644	edit dl rm
v4l2-device.h	18127	0644	edit dl rm
v4l2-dv-timings.h	8887	0644	edit dl rm
v4l2-event.h	6277	0644	edit dl rm
v4l2-fh.h	4759	0644	edit dl rm
v4l2-flash-led-class.h	6034	0644	edit dl rm
v4l2-fwnode.h	14184	0644	edit dl rm
v4l2-image-sizes.h	864	0644	edit dl rm
v4l2-ioctl.h	32669	0644	edit dl rm
v4l2-mc.h	8213	0644	edit dl rm
v4l2-mediabus.h	6234	0644	edit dl rm
v4l2-mem2mem.h	20186	0644	edit dl rm
v4l2-rect.h	4650	0644	edit dl rm
v4l2-subdev.h	41579	0644	edit dl rm
videobuf-core.h	7148	0644	edit dl rm
videobuf-dma-contig.h	1062	0644	edit dl rm
videobuf-dma-sg.h	3009	0644	edit dl rm
videobuf-vmalloc.h	1319	0644	edit dl rm
videobuf2-core.h	45110	0644	edit dl rm
videobuf2-dma-contig.h	866	0644	edit dl rm
videobuf2-dma-sg.h	696	0644	edit dl rm
videobuf2-dvb.h	1863	0644	edit dl rm
videobuf2-memops.h	1101	0644	edit dl rm
videobuf2-v4l2.h	10719	0644	edit dl rm
videobuf2-vmalloc.h	509	0644	edit dl rm
vsp1.h	3288	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/media/v4l2-fh.h (4759B)

/*
 * v4l2-fh.h
 *
 * V4L2 file handle. Store per file handle data for the V4L2
 * framework. Using file handles is optional for the drivers.
 *
 * Copyright (C) 2009--2010 Nokia Corporation.
 *
 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * 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.
 */

#ifndef V4L2_FH_H
#define V4L2_FH_H

#include <linux/fs.h>
#include <linux/kconfig.h>
#include <linux/list.h>
#include <linux/videodev2.h>

struct video_device;
struct v4l2_ctrl_handler;

/**
 * struct v4l2_fh - Describes a V4L2 file handler
 *
 * @list: list of file handlers
 * @vdev: pointer to &struct video_device
 * @ctrl_handler: pointer to &struct v4l2_ctrl_handler
 * @prio: priority of the file handler, as defined by &enum v4l2_priority
 *
 * @wait: event' s wait queue
 * @subscribe_lock: serialise changes to the subscribed list; guarantee that
 *		    the add and del event callbacks are orderly called
 * @subscribed: list of subscribed events
 * @available: list of events waiting to be dequeued
 * @navailable: number of available events at @available list
 * @sequence: event sequence number
 *
 * @m2m_ctx: pointer to &struct v4l2_m2m_ctx
 */
struct v4l2_fh {
	struct list_head	list;
	struct video_device	*vdev;
	struct v4l2_ctrl_handler *ctrl_handler;
	enum v4l2_priority	prio;

/* Events */
	wait_queue_head_t	wait;
	struct mutex		subscribe_lock;
	struct list_head	subscribed;
	struct list_head	available;
	unsigned int		navailable;
	u32			sequence;

#if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV)
	struct v4l2_m2m_ctx	*m2m_ctx;
#endif
};

/**
 * v4l2_fh_init - Initialise the file handle.
 *
 * @fh: pointer to &struct v4l2_fh
 * @vdev: pointer to &struct video_device
 *
 * Parts of the V4L2 framework using the
 * file handles should be initialised in this function. Must be called
 * from driver's v4l2_file_operations->open\(\) handler if the driver
 * uses &struct v4l2_fh.
 */
void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev);

/**
 * v4l2_fh_add - Add the fh to the list of file handles on a video_device.
 *
 * @fh: pointer to &struct v4l2_fh
 *
 * .. note::
 *    The @fh file handle must be initialised first.
 */
void v4l2_fh_add(struct v4l2_fh *fh);

/**
 * v4l2_fh_open - Ancillary routine that can be used as the open\(\) op
 *	of v4l2_file_operations.
 *
 * @filp: pointer to struct file
 *
 * It allocates a v4l2_fh and inits and adds it to the &struct video_device
 * associated with the file pointer.
 */
int v4l2_fh_open(struct file *filp);

/**
 * v4l2_fh_del - Remove file handle from the list of file handles.
 *
 * @fh: pointer to &struct v4l2_fh
 *
 * On error filp->private_data will be %NULL, otherwise it will point to
 * the &struct v4l2_fh.
 *
 * .. note::
 *    Must be called in v4l2_file_operations->release\(\) handler if the driver
 *    uses &struct v4l2_fh.
 */
void v4l2_fh_del(struct v4l2_fh *fh);

/**
 * v4l2_fh_exit - Release resources related to a file handle.
 *
 * @fh: pointer to &struct v4l2_fh
 *
 * Parts of the V4L2 framework using the v4l2_fh must release their
 * resources here, too.
 *
 * .. note::
 *    Must be called in v4l2_file_operations->release\(\) handler if the
 *    driver uses &struct v4l2_fh.
 */
void v4l2_fh_exit(struct v4l2_fh *fh);

/**
 * v4l2_fh_release - Ancillary routine that can be used as the release\(\) op
 *	of v4l2_file_operations.
 *
 * @filp: pointer to struct file
 *
 * It deletes and exits the v4l2_fh associated with the file pointer and
 * frees it. It will do nothing if filp->private_data (the pointer to the
 * v4l2_fh struct) is %NULL.
 *
 * This function always returns 0.
 */
int v4l2_fh_release(struct file *filp);

/**
 * v4l2_fh_is_singular - Returns 1 if this filehandle is the only filehandle
 *	 opened for the associated video_device.
 *
 * @fh: pointer to &struct v4l2_fh
 *
 * If @fh is NULL, then it returns 0.
 */
int v4l2_fh_is_singular(struct v4l2_fh *fh);

/**
 * v4l2_fh_is_singular_file - Returns 1 if this filehandle is the only
 *	filehandle opened for the associated video_device.
 *
 * @filp: pointer to struct file
 *
 * This is a helper function variant of v4l2_fh_is_singular() with uses
 * struct file as argument.
 *
 * If filp->private_data is %NULL, then it will return 0.
 */
static inline int v4l2_fh_is_singular_file(struct file *filp)
{
	return v4l2_fh_is_singular(filp->private_data);
}

#endif /* V4L2_EVENT_H */

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