common.c
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/*
* Samsung S5P/EXYNOS4 SoC Camera Subsystem driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
*
* 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.
*/
#include <linux/module.h>
#include <media/exynos-fimc.h>
#include "common.h"
/* Called with the media graph mutex held or entity->stream_count > 0. */
struct v4l2_subdev *fimc_find_remote_sensor(struct media_entity *entity)
{
struct media_pad *pad = &entity->pads[0];
struct v4l2_subdev *sd;
while (pad->flags & MEDIA_PAD_FL_SINK) {
/* source pad */
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
if (sd->grp_id == GRP_ID_FIMC_IS_SENSOR ||
sd->grp_id == GRP_ID_SENSOR)
return sd;
/* sink pad */
pad = &sd->entity.pads[0];
}
return NULL;
}
EXPORT_SYMBOL(fimc_find_remote_sensor);
void __fimc_vidioc_querycap(struct device *dev, struct v4l2_capability *cap,
unsigned int caps)
{
strlcpy(cap->driver, dev->driver->name, sizeof(cap->driver));
strlcpy(cap->card, dev->driver->name, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s", dev_name(dev));
cap->device_caps = caps;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
}
EXPORT_SYMBOL(__fimc_vidioc_querycap);
MODULE_LICENSE("GPL");