1 files changed, 62 insertions, 1 deletions

diff --git a/include/uapi/linux/dvb/dmx.h b/include/uapi/linux/dvb/dmx.h
index c10f1324b4ca..5f3c5a918f00 100644
--- a/include/uapi/linux/dvb/dmx.h
+++ b/include/uapi/linux/dvb/dmx.h
@@ -211,6 +211,61 @@ struct dmx_stc {
         __u64 stc;
 };
 
+/**
+ * struct dmx_buffer - dmx buffer info
+ *
+ * @index:      id number of the buffer
+ * @bytesused:  number of bytes occupied by data in the buffer (payload);
+ * @offset:     for buffers with memory == DMX_MEMORY_MMAP;
+ *              offset from the start of the device memory for this plane,
+ *              (or a "cookie" that should be passed to mmap() as offset)
+ * @length:     size in bytes of the buffer
+ *
+ * Contains data exchanged by application and driver using one of the streaming
+ * I/O methods.
+ */
+struct dmx_buffer {
+        __u32                   index;
+        __u32                   bytesused;
+        __u32                   offset;
+        __u32                   length;
+};
+
+/**
+ * struct dmx_requestbuffers - request dmx buffer information
+ *
+ * @count:      number of requested buffers,
+ * @size:       size in bytes of the requested buffer
+ *
+ * Contains data used for requesting a dmx buffer.
+ * All reserved fields must be set to zero.
+ */
+struct dmx_requestbuffers {
+        __u32                   count;
+        __u32                   size;
+};
+
+/**
+ * struct dmx_exportbuffer - export of dmx buffer as DMABUF file descriptor
+ *
+ * @index:      id number of the buffer
+ * @flags:      flags for newly created file, currently only O_CLOEXEC is
+ *              supported, refer to manual of open syscall for more details
+ * @fd:         file descriptor associated with DMABUF (set by driver)
+ *
+ * Contains data used for exporting a dmx buffer as DMABUF file descriptor.
+ * The buffer is identified by a 'cookie' returned by DMX_QUERYBUF
+ * (identical to the cookie used to mmap() the buffer to userspace). All
+ * reserved fields must be set to zero. The field reserved0 is expected to
+ * become a structure 'type' allowing an alternative layout of the structure
+ * content. Therefore this field should not be used for any other extensions.
+ */
+struct dmx_exportbuffer {
+        __u32           index;
+        __u32           flags;
+        __s32           fd;
+};
+
 #define DMX_START                _IO('o', 41)
 #define DMX_STOP                 _IO('o', 42)
 #define DMX_SET_FILTER           _IOW('o', 43, struct dmx_sct_filter_params)
@@ -231,4 +286,10 @@ typedef struct dmx_filter dmx_filter_t;
 
 #endif
 
-#endif /* _UAPI_DVBDMX_H_ */
+#define DMX_REQBUFS              _IOWR('o', 60, struct dmx_requestbuffers)
+#define DMX_QUERYBUF             _IOWR('o', 61, struct dmx_buffer)
+#define DMX_EXPBUF               _IOWR('o', 62, struct dmx_exportbuffer)
+#define DMX_QBUF                 _IOWR('o', 63, struct dmx_buffer)
+#define DMX_DQBUF                _IOWR('o', 64, struct dmx_buffer)
+
+#endif /* _DVBDMX_H_ */