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-rw-r--r--include/linux/dma/dw.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/dma/dw.h b/include/linux/dma/dw.h
new file mode 100644
index 0000000..2475613
--- /dev/null
+++ b/include/linux/dma/dw.h
@@ -0,0 +1,37 @@
+/*
+ * Driver for the Synopsys DesignWare DMA Controller
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ * Copyright (C) 2010-2011 ST Microelectronics
+ *
+ * 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 _DMA_DW_H
+#define _DMA_DW_H
+
+#include <linux/dmaengine.h>
+
+/* DMA API extensions */
+struct dw_desc;
+
+struct dw_cyclic_desc {
+ struct dw_desc **desc;
+ unsigned long periods;
+ void (*period_callback)(void *param);
+ void *period_callback_param;
+};
+
+struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan,
+ dma_addr_t buf_addr, size_t buf_len, size_t period_len,
+ enum dma_transfer_direction direction);
+void dw_dma_cyclic_free(struct dma_chan *chan);
+int dw_dma_cyclic_start(struct dma_chan *chan);
+void dw_dma_cyclic_stop(struct dma_chan *chan);
+
+dma_addr_t dw_dma_get_src_addr(struct dma_chan *chan);
+
+dma_addr_t dw_dma_get_dst_addr(struct dma_chan *chan);
+
+#endif /* _DMA_DW_H */

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