File-copy from v4.4.100

This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Please refer to that tree for all history prior to this point.

Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/include/media/soc_camera_platform.h b/include/media/soc_camera_platform.h
new file mode 100644
index 0000000..1e5065d
--- /dev/null
+++ b/include/media/soc_camera_platform.h
@@ -0,0 +1,83 @@
+/*
+ * Generic Platform Camera Driver Header
+ *
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * 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.
+ */
+
+#ifndef __SOC_CAMERA_H__
+#define __SOC_CAMERA_H__
+
+#include <linux/videodev2.h>
+#include <media/soc_camera.h>
+#include <media/v4l2-mediabus.h>
+
+struct device;
+
+struct soc_camera_platform_info {
+	const char *format_name;
+	unsigned long format_depth;
+	struct v4l2_mbus_framefmt format;
+	unsigned long mbus_param;
+	enum v4l2_mbus_type mbus_type;
+	struct soc_camera_device *icd;
+	int (*set_capture)(struct soc_camera_platform_info *info, int enable);
+};
+
+static inline void soc_camera_platform_release(struct platform_device **pdev)
+{
+	*pdev = NULL;
+}
+
+static inline int soc_camera_platform_add(struct soc_camera_device *icd,
+					  struct platform_device **pdev,
+					  struct soc_camera_link *plink,
+					  void (*release)(struct device *dev),
+					  int id)
+{
+	struct soc_camera_subdev_desc *ssdd =
+		(struct soc_camera_subdev_desc *)plink;
+	struct soc_camera_platform_info *info = ssdd->drv_priv;
+	int ret;
+
+	if (&icd->sdesc->subdev_desc != ssdd)
+		return -ENODEV;
+
+	if (*pdev)
+		return -EBUSY;
+
+	*pdev = platform_device_alloc("soc_camera_platform", id);
+	if (!*pdev)
+		return -ENOMEM;
+
+	info->icd = icd;
+
+	(*pdev)->dev.platform_data = info;
+	(*pdev)->dev.release = release;
+
+	ret = platform_device_add(*pdev);
+	if (ret < 0) {
+		platform_device_put(*pdev);
+		*pdev = NULL;
+		info->icd = NULL;
+	}
+
+	return ret;
+}
+
+static inline void soc_camera_platform_del(const struct soc_camera_device *icd,
+					   struct platform_device *pdev,
+					   const struct soc_camera_link *plink)
+{
+	const struct soc_camera_subdev_desc *ssdd =
+		(const struct soc_camera_subdev_desc *)plink;
+	if (&icd->sdesc->subdev_desc != ssdd || !pdev)
+		return;
+
+	platform_device_unregister(pdev);
+}
+
+#endif /* __SOC_CAMERA_H__ */