1 files changed, 43 insertions, 0 deletions
diff --git a/include/media/videobuf-vmalloc.h b/include/media/videobuf-vmalloc.h
new file mode 100644
index 000000000..e930dbb9d
--- /dev/null
+++ b/include/media/videobuf-vmalloc.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * helper functions for vmalloc capture buffers
+ *
+ * The functions expect the hardware being able to scatter gather
+ * (i.e. the buffers are not linear in physical memory, but fragmented
+ * into PAGE_SIZE chunks).  They also assume the driver does not need
+ * to touch the video data.
+ *
+ * (c) 2007 Mauro Carvalho Chehab, <mchehab@kernel.org>
+ */
+#ifndef _VIDEOBUF_VMALLOC_H
+#define _VIDEOBUF_VMALLOC_H
+
+#include <media/videobuf-core.h>
+
+/* --------------------------------------------------------------------- */
+
+struct videobuf_vmalloc_memory {
+	u32                 magic;
+
+	void                *vaddr;
+
+	/* remap_vmalloc_range seems to need to run
+	 * after mmap() on some cases */
+	struct vm_area_struct *vma;
+};
+
+void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
+			 const struct videobuf_queue_ops *ops,
+			 struct device *dev,
+			 spinlock_t *irqlock,
+			 enum v4l2_buf_type type,
+			 enum v4l2_field field,
+			 unsigned int msize,
+			 void *priv,
+			 struct mutex *ext_lock);
+
+void *videobuf_to_vmalloc(struct videobuf_buffer *buf);
+
+void videobuf_vmalloc_free(struct videobuf_buffer *buf);
+
+#endif