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yaml --- r: 191587 b: refs/heads/master c: b2623a6 h: refs/heads/master i: 191585: caa5999 191583: be4e472 v: v3
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Magnus Damm
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Paul Mundt
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Mar 23, 2010
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refs/heads/master: f354a38175f5219146f4675dca770e114cf3c502 | ||
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/* | ||
* Header for the new SH dmaengine driver | ||
* | ||
* Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> | ||
* | ||
* 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 SH_DMA_H | ||
#define SH_DMA_H | ||
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#include <linux/list.h> | ||
#include <linux/dmaengine.h> | ||
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/* Used by slave DMA clients to request DMA to/from a specific peripheral */ | ||
struct sh_dmae_slave { | ||
unsigned int slave_id; /* Set by the platform */ | ||
struct device *dma_dev; /* Set by the platform */ | ||
struct sh_dmae_slave_config *config; /* Set by the driver */ | ||
}; | ||
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struct sh_dmae_regs { | ||
u32 sar; /* SAR / source address */ | ||
u32 dar; /* DAR / destination address */ | ||
u32 tcr; /* TCR / transfer count */ | ||
}; | ||
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struct sh_desc { | ||
struct sh_dmae_regs hw; | ||
struct list_head node; | ||
struct dma_async_tx_descriptor async_tx; | ||
enum dma_data_direction direction; | ||
dma_cookie_t cookie; | ||
size_t partial; | ||
int chunks; | ||
int mark; | ||
}; | ||
struct sh_dmae_slave_config { | ||
unsigned int slave_id; | ||
dma_addr_t addr; | ||
u32 chcr; | ||
char mid_rid; | ||
}; | ||
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struct sh_dmae_channel { | ||
unsigned int offset; | ||
unsigned int dmars; | ||
unsigned int dmars_bit; | ||
}; | ||
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struct sh_dmae_pdata { | ||
struct sh_dmae_slave_config *slave; | ||
int slave_num; | ||
struct sh_dmae_channel *channel; | ||
int channel_num; | ||
unsigned int ts_low_shift; | ||
unsigned int ts_low_mask; | ||
unsigned int ts_high_shift; | ||
unsigned int ts_high_mask; | ||
unsigned int *ts_shift; | ||
int ts_shift_num; | ||
u16 dmaor_init; | ||
}; | ||
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/* DMA register */ | ||
#define SAR 0x00 | ||
#define DAR 0x04 | ||
#define TCR 0x08 | ||
#define CHCR 0x0C | ||
#define DMAOR 0x40 | ||
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/* DMAOR definitions */ | ||
#define DMAOR_AE 0x00000004 | ||
#define DMAOR_NMIF 0x00000002 | ||
#define DMAOR_DME 0x00000001 | ||
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/* Definitions for the SuperH DMAC */ | ||
#define REQ_L 0x00000000 | ||
#define REQ_E 0x00080000 | ||
#define RACK_H 0x00000000 | ||
#define RACK_L 0x00040000 | ||
#define ACK_R 0x00000000 | ||
#define ACK_W 0x00020000 | ||
#define ACK_H 0x00000000 | ||
#define ACK_L 0x00010000 | ||
#define DM_INC 0x00004000 | ||
#define DM_DEC 0x00008000 | ||
#define DM_FIX 0x0000c000 | ||
#define SM_INC 0x00001000 | ||
#define SM_DEC 0x00002000 | ||
#define SM_FIX 0x00003000 | ||
#define RS_IN 0x00000200 | ||
#define RS_OUT 0x00000300 | ||
#define TS_BLK 0x00000040 | ||
#define TM_BUR 0x00000020 | ||
#define CHCR_DE 0x00000001 | ||
#define CHCR_TE 0x00000002 | ||
#define CHCR_IE 0x00000004 | ||
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#endif |