ecf90fbbdc
Using struct dma_chan::private is deprecated. To update the shdma driver to stop using it we first have to eliminate internal runtime uses of it. After that we will also be able to stop using it for channel configuration. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Renesas SuperH DMA Engine support
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*
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* Copyright (C) 2009 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
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* Copyright (C) 2009 Renesas Solutions, Inc. All rights reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#ifndef __DMA_SHDMA_H
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#define __DMA_SHDMA_H
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#include <linux/sh_dma.h>
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#include <linux/shdma-base.h>
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#include <linux/dmaengine.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#define SH_DMAE_MAX_CHANNELS 20
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#define SH_DMAE_TCR_MAX 0x00FFFFFF /* 16MB */
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struct device;
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struct sh_dmae_chan {
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struct shdma_chan shdma_chan;
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const struct sh_dmae_slave_config *config; /* Slave DMA configuration */
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int xmit_shift; /* log_2(bytes_per_xfer) */
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u32 __iomem *base;
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char dev_id[16]; /* unique name per DMAC of channel */
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int pm_error;
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};
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struct sh_dmae_device {
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struct shdma_dev shdma_dev;
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struct sh_dmae_chan *chan[SH_DMAE_MAX_CHANNELS];
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struct sh_dmae_pdata *pdata;
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struct list_head node;
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u32 __iomem *chan_reg;
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u16 __iomem *dmars;
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unsigned int chcr_offset;
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u32 chcr_ie_bit;
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};
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struct sh_dmae_regs {
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u32 sar; /* SAR / source address */
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u32 dar; /* DAR / destination address */
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u32 tcr; /* TCR / transfer count */
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};
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struct sh_dmae_desc {
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struct sh_dmae_regs hw;
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struct shdma_desc shdma_desc;
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};
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#define to_sh_chan(chan) container_of(chan, struct sh_dmae_chan, shdma_chan)
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#define to_sh_desc(lh) container_of(lh, struct sh_desc, node)
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#define tx_to_sh_desc(tx) container_of(tx, struct sh_desc, async_tx)
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#define to_sh_dev(chan) container_of(chan->shdma_chan.dma_chan.device,\
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struct sh_dmae_device, shdma_dev.dma_dev)
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#endif /* __DMA_SHDMA_H */
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