cd07251521
The transfer direction for a channel can be inferred from the transfer request and the need for specifying transfer direction in platfrom data can be eliminated. So the structure definition 'struct dma_pl330_peri' is no longer required. The channel's private data is set to point to a channel id specified in the platform data (instead of an instance of type 'struct dma_pl330_peri'). The filter function is correspondingly modified to match the channel id. With the 'struct dma_pl330_peri' removed from platform data, the dma controller transfer capabilities cannot be inferred any more. Hence, the dma controller capabilities is specified using platform data. Acked-by: Jassi Brar <jassisinghbrar@gmail.com> Acked-by: Boojin Kim <boojin.kim@samsung.com> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> 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>
37 lines
1.1 KiB
C
37 lines
1.1 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_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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u8 *peri_id;
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/* Operational capabilities */
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dma_cap_mask_t cap_mask;
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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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