1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Samsung S5P/EXYNOS4 SoC Camera Subsystem driver 4 * 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 */ 17 struct 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 } 38 EXPORT_SYMBOL(fimc_find_remote_sensor); 39 40 void __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 } 45 EXPORT_SYMBOL(__fimc_vidioc_querycap); 46 47 MODULE_LICENSE("GPL"); 48