linux/drivers/media/mc/mc-request.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Media device request objects
 *
 * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 * Copyright (C) 2018 Intel Corporation
 * Copyright (C) 2018 Google, Inc.
 *
 * Author: Hans Verkuil <[email protected]>
 * Author: Sakari Ailus <[email protected]>
 */

#include <linux/anon_inodes.h>
#include <linux/file.h>
#include <linux/refcount.h>

#include <media/media-device.h>
#include <media/media-request.h>

static const char * const request_state[] = …;

static const char *
media_request_state_str(enum media_request_state state)
{ … }

static void media_request_clean(struct media_request *req)
{ … }

static void media_request_release(struct kref *kref)
{ … }

void media_request_put(struct media_request *req)
{ … }
EXPORT_SYMBOL_GPL(…);

static int media_request_close(struct inode *inode, struct file *filp)
{ … }

static __poll_t media_request_poll(struct file *filp,
				   struct poll_table_struct *wait)
{ … }

static long media_request_ioctl_queue(struct media_request *req)
{ … }

static long media_request_ioctl_reinit(struct media_request *req)
{ … }

static long media_request_ioctl(struct file *filp, unsigned int cmd,
				unsigned long arg)
{ … }

static const struct file_operations request_fops = …;

struct media_request *
media_request_get_by_fd(struct media_device *mdev, int request_fd)
{ … }
EXPORT_SYMBOL_GPL(…);

int media_request_alloc(struct media_device *mdev, int *alloc_fd)
{ … }

static void media_request_object_release(struct kref *kref)
{ … }

struct media_request_object *
media_request_object_find(struct media_request *req,
			  const struct media_request_object_ops *ops,
			  void *priv)
{ … }
EXPORT_SYMBOL_GPL(…);

void media_request_object_put(struct media_request_object *obj)
{ … }
EXPORT_SYMBOL_GPL(…);

void media_request_object_init(struct media_request_object *obj)
{ … }
EXPORT_SYMBOL_GPL(…);

int media_request_object_bind(struct media_request *req,
			      const struct media_request_object_ops *ops,
			      void *priv, bool is_buffer,
			      struct media_request_object *obj)
{ … }
EXPORT_SYMBOL_GPL(…);

void media_request_object_unbind(struct media_request_object *obj)
{ … }
EXPORT_SYMBOL_GPL(…);

void media_request_object_complete(struct media_request_object *obj)
{ … }
EXPORT_SYMBOL_GPL(…);