1 files changed, 86 insertions, 0 deletions

diff --git a/include/linux/intel_mid_dma.h b/include/linux/intel_mid_dma.h
new file mode 100644
index 000000000000..d9d08b6269b6
--- /dev/null
+++ b/include/linux/intel_mid_dma.h
@@ -0,0 +1,86 @@
+/*
+ *  intel_mid_dma.h - Intel MID DMA Drivers
+ *
+ *  Copyright (C) 2008-10 Intel Corp
+ *  Author: Vinod Koul <vinod.koul@intel.com>
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  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; version 2 of the License.
+ *
+ *  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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *
+ */
+#ifndef __INTEL_MID_DMA_H__
+#define __INTEL_MID_DMA_H__
+
+#include <linux/dmaengine.h>
+
+/*DMA transaction width, src and dstn width would be same
+The DMA length must be width aligned,
+for 32 bit width the length must be 32 bit (4bytes) aligned only*/
+enum intel_mid_dma_width {
+        LNW_DMA_WIDTH_8BIT = 0x0,
+        LNW_DMA_WIDTH_16BIT = 0x1,
+        LNW_DMA_WIDTH_32BIT = 0x2,
+};
+
+/*DMA mode configurations*/
+enum intel_mid_dma_mode {
+        LNW_DMA_PER_TO_MEM = 0, /*periphral to memory configuration*/
+        LNW_DMA_MEM_TO_PER,     /*memory to periphral configuration*/
+        LNW_DMA_MEM_TO_MEM,     /*mem to mem confg (testing only)*/
+};
+
+/*DMA handshaking*/
+enum intel_mid_dma_hs_mode {
+        LNW_DMA_HW_HS = 0,      /*HW Handshaking only*/
+        LNW_DMA_SW_HS = 1,      /*SW Handshaking not recommended*/
+};
+
+/*Burst size configuration*/
+enum intel_mid_dma_msize {
+        LNW_DMA_MSIZE_1 = 0x0,
+        LNW_DMA_MSIZE_4 = 0x1,
+        LNW_DMA_MSIZE_8 = 0x2,
+        LNW_DMA_MSIZE_16 = 0x3,
+        LNW_DMA_MSIZE_32 = 0x4,
+        LNW_DMA_MSIZE_64 = 0x5,
+};
+
+/**
+ * struct intel_mid_dma_slave - DMA slave structure
+ *
+ * @dirn: DMA trf direction
+ * @src_width: tx register width
+ * @dst_width: rx register width
+ * @hs_mode: HW/SW handshaking mode
+ * @cfg_mode: DMA data transfer mode (per-per/mem-per/mem-mem)
+ * @src_msize: Source DMA burst size
+ * @dst_msize: Dst DMA burst size
+ * @device_instance: DMA peripheral device instance, we can have multiple
+ *              peripheral device connected to single DMAC
+ */
+struct intel_mid_dma_slave {
+        enum dma_data_direction         dirn;
+        enum intel_mid_dma_width        src_width; /*width of DMA src txn*/
+        enum intel_mid_dma_width        dst_width; /*width of DMA dst txn*/
+        enum intel_mid_dma_hs_mode      hs_mode;  /*handshaking*/
+        enum intel_mid_dma_mode         cfg_mode; /*mode configuration*/
+        enum intel_mid_dma_msize        src_msize; /*size if src burst*/
+        enum intel_mid_dma_msize        dst_msize; /*size of dst burst*/
+        unsigned int            device_instance; /*0, 1 for periphral instance*/
+};
+
+#endif /*__INTEL_MID_DMA_H__*/