[COMMON] repeater: add header file

Change-Id: Ie3dc83448db200ddb140c9742e8c8cde68d1abac
Signed-off-by: shinwon.lee <shinwon.lee@samsung.com>

diff --git a/include/media/exynos_repeater.h b/include/media/exynos_repeater.h
new file mode 100644 (file)
index 0000000..08c48ca
--- /dev/null
+++ b/include/media/exynos_repeater.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
+ *             http://www.samsung.com
+ *
+ * Header file for Exynos Repeater driver
+ *
+ * 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 _EXYNOS_REPEATER_H_
+#define _EXYNOS_REPEATER_H_
+
+#include <linux/dma-buf.h>
+
+#define MAX_SHARED_BUF_NUM     3
+
+/**
+ * struct shared_buffer_info
+ *
+ * @pixel_format       : pixel_format of bufs
+ * @width              : width of bufs
+ * @height             : height of bufs
+ * @buffer_count       : valid buffer count of bufs
+ * @bufs               : pointer of struct dma_buf for buffer sharing.
+ */
+struct shared_buffer_info {
+       int pixel_format;
+       int width;
+       int height;
+       int buffer_count;
+       struct dma_buf *bufs[MAX_SHARED_BUF_NUM];
+};
+
+/**
+ * hwfc_request_buffer - Get infomation of shared buffer
+ * @info: information of shared buffer
+ * owner: G2D is 0, MFC is 1
+ *
+ * G2D/MFC calls it to get shared buffer information.
+ * Repeater increments reference count on the dma-buf.
+ * G2D/MFC should decrement reference count on the dma-buf.
+ * If repeater has valid buffer, it returns a zero.
+ * If repeater don't have valid buffer, it returns a errno.
+ *
+ */
+#ifdef CONFIG_VIDEO_EXYNOS_REPEATER
+int hwfc_request_buffer(struct shared_buffer_info *info, int owner);
+#else
+static inline int hwfc_request_buffer(struct shared_buffer_info *info, int owner)
+{
+       return -1;
+}
+#endif
+
+/**
+ * hwfc_get_valid_buffer - Get shared buf idx for capture output
+ * @buf_idx: shared buf idx for capture output
+ *
+ * G2D call it to get shared buffer index for capture output.
+ * If repeater has valid buffer for capture output, it returns a zero.
+ * If repeater don't have valid buffer for capture output, it returns a errno.
+ *
+ */
+#ifdef CONFIG_VIDEO_EXYNOS_REPEATER
+int hwfc_get_valid_buffer(int *buf_idx);
+#else
+static inline int hwfc_get_valid_buffer(int *buf_idx)
+{
+       return -1;
+}
+#endif
+
+/**
+ * hwfc_set_valid_buffer - Set shared buf idx & job id for capture output
+ * @buf_idx    : shared buf idx for capture output
+ * @capture_idx        : hwfc capture idx
+ *
+ * G2D calls it after G2D H/W starts capture.
+ *
+ */
+#ifdef CONFIG_VIDEO_EXYNOS_REPEATER
+int hwfc_set_valid_buffer(int buf_idx, int capture_idx);
+#else
+static inline int hwfc_set_valid_buffer(int buf_idx, int capture_idx)
+{
+       return -1;
+}
+#endif
+
+/**
+ * hwfc_encoding_done - Set ret about encoding
+ * @encoding_ret : ret about encoding
+ *
+ * MFC calls it when encoding is done.
+ *
+ */
+#ifdef CONFIG_VIDEO_EXYNOS_REPEATER
+int hwfc_encoding_done(int encoding_ret);
+#else
+static inline int hwfc_encoding_done(int encoding_ret)
+{
+       return -1;
+}
+#endif
+
+#endif /* _EXYNOS_REPEATER_H_ */