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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Samsung S5P/EXYNOS4 SoC Camera Subsystem driver4 *5 * Copyright (C) 2013 Samsung Electronics Co., Ltd.6 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>7 */8 9#include <linux/module.h>10#include <media/drv-intf/exynos-fimc.h>11#include "common.h"12 13/*14 * Called with the media graph mutex held or media_entity_is_streaming(entity)15 * true.16 */17struct v4l2_subdev *fimc_find_remote_sensor(struct media_entity *entity)18{19 struct media_pad *pad = &entity->pads[0];20 struct v4l2_subdev *sd;21 22 while (pad->flags & MEDIA_PAD_FL_SINK) {23 /* source pad */24 pad = media_pad_remote_pad_first(pad);25 if (!pad || !is_media_entity_v4l2_subdev(pad->entity))26 break;27 28 sd = media_entity_to_v4l2_subdev(pad->entity);29 30 if (sd->grp_id == GRP_ID_FIMC_IS_SENSOR ||31 sd->grp_id == GRP_ID_SENSOR)32 return sd;33 /* sink pad */34 pad = &sd->entity.pads[0];35 }36 return NULL;37}38EXPORT_SYMBOL(fimc_find_remote_sensor);39 40void __fimc_vidioc_querycap(struct device *dev, struct v4l2_capability *cap)41{42 strscpy(cap->driver, dev->driver->name, sizeof(cap->driver));43 strscpy(cap->card, dev->driver->name, sizeof(cap->card));44}45EXPORT_SYMBOL(__fimc_vidioc_querycap);46 47MODULE_DESCRIPTION("Samsung S5P/EXYNOS4 SoC Camera Subsystem driver");48MODULE_LICENSE("GPL");49