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/
usr/
src/
linux-headers-3.0.0-14/
include/
linux/
- drwxr-xr-x
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Viewing file:  intel_mid_dma.h (2.41 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
* 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>
#define DMA_PREP_CIRCULAR_LIST (1 << 10)
/*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
* @per_addr: Periphral address
* @device_instance: DMA peripheral device instance, we can have multiple
* peripheral device connected to single DMAC
*/
struct intel_mid_dma_slave {
enum intel_mid_dma_hs_mode hs_mode; /*handshaking*/
enum intel_mid_dma_mode cfg_mode; /*mode configuration*/
unsigned int device_instance; /*0, 1 for periphral instance*/
struct dma_slave_config dma_slave;
};
#endif /*__INTEL_MID_DMA_H__*/
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