1 files changed, 96 insertions, 0 deletions
diff --git a/include/media/dvb_vb2.h b/include/media/dvb_vb2.h
new file mode 100644
index 000000000000..7a529844c5e1
--- /dev/null
+++ b/include/media/dvb_vb2.h
@@ -0,0 +1,96 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * dvb-vb2.h - DVB driver helper framework for streaming I/O
+ *
+ * Copyright (C) 2015 Samsung Electronics
+ *
+ * Author: jh1009.sung@samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _DVB_VB2_H
+#define _DVB_VB2_H
+
+#include <linux/mutex.h>
+#include <linux/poll.h>
+#include <linux/dvb/dmx.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/videobuf2-vmalloc.h>
+
+enum dvb_buf_type {
+	DVB_BUF_TYPE_CAPTURE        = 1,
+	DVB_BUF_TYPE_OUTPUT         = 2,
+};
+
+#define DVB_VB2_STATE_NONE (0x0)
+#define DVB_VB2_STATE_INIT (0x1)
+#define DVB_VB2_STATE_REQBUFS (0x2)
+#define DVB_VB2_STATE_STREAMON (0x4)
+
+#define DVB_VB2_NAME_MAX (20)
+
+struct dvb_buffer {
+	struct vb2_buffer	vb;
+	struct list_head	list;
+};
+
+struct dvb_vb2_ctx {
+	struct vb2_queue	vb_q;
+	struct mutex		mutex;
+	spinlock_t		slock;
+	struct list_head	dvb_q;
+	struct dvb_buffer	*buf;
+	int	offset;
+	int	remain;
+	int	state;
+	int	buf_siz;
+	int	buf_cnt;
+	int	nonblocking;
+	char	name[DVB_VB2_NAME_MAX + 1];
+};
+
+int dvb_vb2_stream_on(struct dvb_vb2_ctx *ctx);
+int dvb_vb2_stream_off(struct dvb_vb2_ctx *ctx);
+#ifndef DVB_MMAP
+static inline int dvb_vb2_init(struct dvb_vb2_ctx *ctx,
+			       const char *name, int non_blocking)
+{
+	return 0;
+};
+static inline int dvb_vb2_release(struct dvb_vb2_ctx *ctx)
+{
+	return 0;
+};
+#define dvb_vb2_is_streaming(ctx) (0)
+#define dvb_vb2_fill_buffer(ctx, file, wait) (0)
+
+static inline unsigned int dvb_vb2_poll(struct dvb_vb2_ctx *ctx,
+					struct file *file,
+					poll_table *wait)
+{
+	return 0;
+}
+#else
+int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int non_blocking);
+int dvb_vb2_release(struct dvb_vb2_ctx *ctx);
+int dvb_vb2_is_streaming(struct dvb_vb2_ctx *ctx);
+int dvb_vb2_fill_buffer(struct dvb_vb2_ctx *ctx,
+			const unsigned char *src, int len);
+unsigned int dvb_vb2_poll(struct dvb_vb2_ctx *ctx, struct file *file,
+			  poll_table *wait);
+#endif
+
+
+int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req);
+int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b);
+int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp);
+int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b);
+int dvb_vb2_dqbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b);
+int dvb_vb2_mmap(struct dvb_vb2_ctx *ctx, struct vm_area_struct *vma);
+
+#endif /* _DVB_VB2_H */