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intel_mid_dma.h
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1 /*
2  * intel_mid_dma.h - Intel MID DMA Drivers
3  *
4  * Copyright (C) 2008-10 Intel Corp
5  * Author: Vinod Koul <[email protected]>
6  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; version 2 of the License.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20  *
21  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
22  *
23  *
24  */
25 #ifndef __INTEL_MID_DMA_H__
26 #define __INTEL_MID_DMA_H__
27 
28 #include <linux/dmaengine.h>
29 
30 #define DMA_PREP_CIRCULAR_LIST (1 << 10)
31 
32 /*DMA mode configurations*/
34  LNW_DMA_PER_TO_MEM = 0, /*periphral to memory configuration*/
35  LNW_DMA_MEM_TO_PER, /*memory to periphral configuration*/
36  LNW_DMA_MEM_TO_MEM, /*mem to mem confg (testing only)*/
37 };
38 
39 /*DMA handshaking*/
41  LNW_DMA_HW_HS = 0, /*HW Handshaking only*/
42  LNW_DMA_SW_HS = 1, /*SW Handshaking not recommended*/
43 };
44 
45 /*Burst size configuration*/
53 };
54 
70  enum intel_mid_dma_hs_mode hs_mode; /*handshaking*/
71  enum intel_mid_dma_mode cfg_mode; /*mode configuration*/
72  unsigned int device_instance; /*0, 1 for periphral instance*/
74 };
75 
76 #endif /*__INTEL_MID_DMA_H__*/