1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-queue.h b/drivers/media/video/cx18/cx18-queue.h
new file mode 100644
index 000000000000..f86c8a6fa6e7
--- /dev/null
+++ b/drivers/media/video/cx18/cx18-queue.h
@@ -0,0 +1,59 @@
+/*
+ *  cx18 buffer queues
+ *
+ *  Derived from ivtv-queue.h
+ *
+ *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA
+ */
+
+#define CX18_DMA_UNMAPPED       ((u32) -1)
+
+/* cx18_buffer utility functions */
+
+static inline void cx18_buf_sync_for_cpu(struct cx18_stream *s,
+        struct cx18_buffer *buf)
+{
+        pci_dma_sync_single_for_cpu(s->cx->dev, buf->dma_handle,
+                                s->buf_size, s->dma);
+}
+
+static inline void cx18_buf_sync_for_device(struct cx18_stream *s,
+        struct cx18_buffer *buf)
+{
+        pci_dma_sync_single_for_device(s->cx->dev, buf->dma_handle,
+                                s->buf_size, s->dma);
+}
+
+int cx18_buf_copy_from_user(struct cx18_stream *s, struct cx18_buffer *buf,
+        const char __user *src, int copybytes);
+void cx18_buf_swap(struct cx18_buffer *buf);
+
+/* cx18_queue utility functions */
+void cx18_queue_init(struct cx18_queue *q);
+void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf,
+        struct cx18_queue *q);
+struct cx18_buffer *cx18_dequeue(struct cx18_stream *s, struct cx18_queue *q);
+int cx18_queue_move(struct cx18_stream *s, struct cx18_queue *from,
+       struct cx18_queue *steal, struct cx18_queue *to, int needed_bytes);
+struct cx18_buffer *cx18_queue_find_buf(struct cx18_stream *s, u32 id,
+        u32 bytesused);
+void cx18_flush_queues(struct cx18_stream *s);
+
+/* cx18_stream utility functions */
+int cx18_stream_alloc(struct cx18_stream *s);
+void cx18_stream_free(struct cx18_stream *s);