projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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"); |