linux/drivers/staging/media/imx/imx-media-dev-common.c

// SPDX-License-Identifier: GPL-2.0
/*
 * V4L2 Media Controller Driver for Freescale common i.MX5/6/7 SOC
 *
 * Copyright (c) 2019 Linaro Ltd
 * Copyright (c) 2016 Mentor Graphics Inc.
 */

#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-mc.h>
#include "imx-media.h"

static inline struct imx_media_dev *notifier2dev(struct v4l2_async_notifier *n)
{ … }

/*
 * Create the missing media links from the CSI-2 receiver.
 * Called after all async subdevs have bound.
 */
static void imx_media_create_csi2_links(struct imx_media_dev *imxmd)
{ … }

/*
 * adds given video device to given imx-media source pad vdev list.
 * Continues upstream from the pad entity's sink pads.
 */
static int imx_media_add_vdev_to_pad(struct imx_media_dev *imxmd,
				     struct imx_media_video_dev *vdev,
				     struct media_pad *srcpad)
{ … }

/*
 * For every subdevice, allocate an array of list_head's, one list_head
 * for each pad, to hold the list of video devices reachable from that
 * pad.
 */
static int imx_media_alloc_pad_vdev_lists(struct imx_media_dev *imxmd)
{ … }

/* form the vdev lists in all imx-media source pads */
static int imx_media_create_pad_vdev_lists(struct imx_media_dev *imxmd)
{ … }

/* async subdev complete notifier */
int imx_media_probe_complete(struct v4l2_async_notifier *notifier)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * adds controls to a video device from an entity subdevice.
 * Continues upstream from the entity's sink pads.
 */
static int imx_media_inherit_controls(struct imx_media_dev *imxmd,
				      struct video_device *vfd,
				      struct media_entity *entity)
{ … }

static int imx_media_link_notify(struct media_link *link, u32 flags,
				 unsigned int notification)
{ … }

static void imx_media_notify(struct v4l2_subdev *sd, unsigned int notification,
			     void *arg)
{ … }

static const struct v4l2_async_notifier_operations imx_media_notifier_ops = …;

static const struct media_device_ops imx_media_md_ops = …;

struct imx_media_dev *imx_media_dev_init(struct device *dev,
					 const struct media_device_ops *ops)
{ … }
EXPORT_SYMBOL_GPL(…);

int imx_media_dev_notifier_register(struct imx_media_dev *imxmd,
			    const struct v4l2_async_notifier_operations *ops)
{ … }
EXPORT_SYMBOL_GPL(…);