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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2014-09-23 18:18:11 +0400
committerVinod Koul <vinod.koul@intel.com>2014-10-15 19:01:04 +0400
commit3d588f83e4d6a5230d9094b97d38621cbaa9a972 (patch)
tree376a10e65eef40977b14439e212d9b8a49c732e9 /include/linux/dma
parent46e8c83c83c06b90ebc000df481c2fdcee79a141 (diff)
downloadlinux-3d588f83e4d6a5230d9094b97d38621cbaa9a972.tar.xz
dmaengine: dw: split dma-dw.h to platform and private parts
The introduced include/linux/dma/dw.h is going to contain the private extensions and structures which are shared for dw_dmac users in the kernel. Meanwhile include/linux/platform_data/dma-dw.h keeps only platform related data types and definitions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dma')
-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 000000000000..24756130eadb
--- /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 */