Edit File: sh_dma.h
/* * 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 #include <linux/dmaengine.h> #include <linux/list.h> #include <linux/shdma-base.h> #include <linux/types.h> struct device; /* Used by slave DMA clients to request DMA to/from a specific peripheral */ struct sh_dmae_slave { struct shdma_slave shdma_slave; /* Set by the platform */ }; /* * Supplied by platforms to specify, how a DMA channel has to be configured for * a certain peripheral */ struct sh_dmae_slave_config { int slave_id; dma_addr_t addr; u32 chcr; char mid_rid; }; struct sh_dmae_channel { unsigned int offset; unsigned int dmars; unsigned int dmars_bit; unsigned int chclr_offset; }; struct sh_dmae_pdata { const struct sh_dmae_slave_config *slave; int slave_num; const 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; const unsigned int *ts_shift; int ts_shift_num; u16 dmaor_init; unsigned int chcr_offset; u32 chcr_ie_bit; unsigned int dmaor_is_32bit:1; unsigned int needs_tend_set:1; unsigned int no_dmars:1; unsigned int chclr_present:1; unsigned int slave_only:1; }; /* DMA register */ #define SAR 0x00 #define DAR 0x04 #define TCR 0x08 #define CHCR 0x0C #define DMAOR 0x40 #define TEND 0x18 /* USB-DMAC */ /* DMAOR definitions */ #define DMAOR_AE 0x00000004 #define DMAOR_NMIF 0x00000002 #define DMAOR_DME 0x00000001 /* 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 bool shdma_chan_filter(struct dma_chan *chan, void *arg); #endif