3e2ec13a81
The dma channel selection filter function is moved from plat-samsung into the pl330 driver. In additon to that, a check is added in the filter function to ensure that the channel on which the filter has been invoked is pl330 channel instance (and avoid any incorrect access of chan->private in a system with multiple types of DMA drivers). Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* linux/include/linux/amba/pl330.h
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*
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* Copyright (C) 2010 Samsung Electronics Co. Ltd.
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* Jaswinder Singh <jassi.brar@samsung.com>
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*
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* This program 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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#ifndef __AMBA_PL330_H_
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#define __AMBA_PL330_H_
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#include <linux/dmaengine.h>
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#include <asm/hardware/pl330.h>
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struct dma_pl330_peri {
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/*
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* Peri_Req i/f of the DMAC that is
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* peripheral could be reached from.
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*/
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u8 peri_id; /* specific dma id */
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enum pl330_reqtype rqtype;
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};
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struct dma_pl330_platdata {
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/*
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* Number of valid peripherals connected to DMAC.
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* This may be different from the value read from
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* CR0, as the PL330 implementation might have 'holes'
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* in the peri list or the peri could also be reached
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* from another DMAC which the platform prefers.
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*/
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u8 nr_valid_peri;
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/* Array of valid peripherals */
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struct dma_pl330_peri *peri;
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/* Bytes to allocate for MC buffer */
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unsigned mcbuf_sz;
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};
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extern bool pl330_filter(struct dma_chan *chan, void *param);
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#endif /* __AMBA_PL330_H_ */
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