Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / media / platform / exynos4-is / common.c

diff --git a/kernel/drivers/media/platform/exynos4-is/common.c b/kernel/drivers/media/platform/exynos4-is/common.c
new file mode 100644 (file)
index 0000000..0eb34ec
--- /dev/null
+++ b/kernel/drivers/media/platform/exynos4-is/common.c
@@ -0,0 +1,53 @@
+/*
+ * 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");