Commit | Line | Data |
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045a1fac SN |
1 | /* |
2 | * Samsung S5P/EXYNOS4 SoC Camera Subsystem driver | |
3 | * | |
4 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. | |
5 | * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <media/s5p_fimc.h> | |
14 | #include "common.h" | |
15 | ||
16 | /* Called with the media graph mutex held or entity->stream_count > 0. */ | |
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_entity_remote_pad(pad); | |
25 | if (pad == NULL || | |
26 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
27 | break; | |
28 | ||
29 | sd = media_entity_to_v4l2_subdev(pad->entity); | |
30 | ||
31 | if (sd->grp_id == GRP_ID_FIMC_IS_SENSOR || | |
32 | sd->grp_id == GRP_ID_SENSOR) | |
33 | return sd; | |
34 | /* sink pad */ | |
35 | pad = &sd->entity.pads[0]; | |
36 | } | |
37 | return NULL; | |
38 | } | |
39 | EXPORT_SYMBOL(fimc_find_remote_sensor); | |
40 | ||
41 | MODULE_LICENSE("GPL"); |