1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/media/pci/cobalt/cobalt-omnitek.h b/drivers/media/pci/cobalt/cobalt-omnitek.h
new file mode 100644
index 0000000000..129c5fccbe
--- /dev/null
+++ b/drivers/media/pci/cobalt/cobalt-omnitek.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  Omnitek Scatter-Gather DMA Controller
+ *
+ *  Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates.
+ *  All rights reserved.
+ */
+
+#ifndef COBALT_OMNITEK_H
+#define COBALT_OMNITEK_H
+
+#include <linux/scatterlist.h>
+#include "cobalt-driver.h"
+
+struct sg_dma_descriptor {
+	u32 pci_l;
+	u32 pci_h;
+
+	u32 local;
+	u32 reserved0;
+
+	u32 next_l;
+	u32 next_h;
+
+	u32 bytes;
+	u32 reserved1;
+};
+
+int omni_sg_dma_init(struct cobalt *cobalt);
+void omni_sg_dma_abort_channel(struct cobalt_stream *s);
+void omni_sg_dma_start(struct cobalt_stream *s, struct sg_dma_desc_info *desc);
+bool is_dma_done(struct cobalt_stream *s);
+
+int descriptor_list_create(struct cobalt *cobalt,
+	struct scatterlist *scatter_list, bool to_pci, unsigned sglen,
+	unsigned size, unsigned width, unsigned stride,
+	struct sg_dma_desc_info *desc);
+
+void descriptor_list_chain(struct sg_dma_desc_info *this,
+			   struct sg_dma_desc_info *next);
+void descriptor_list_loopback(struct sg_dma_desc_info *desc);
+void descriptor_list_end_of_chain(struct sg_dma_desc_info *desc);
+
+void *descriptor_list_allocate(struct sg_dma_desc_info *desc, size_t bytes);
+void descriptor_list_free(struct sg_dma_desc_info *desc);
+
+void descriptor_list_interrupt_enable(struct sg_dma_desc_info *desc);
+void descriptor_list_interrupt_disable(struct sg_dma_desc_info *desc);
+
+#endif