forked from Minki/linux
e7ba5f1d0f
This patch make the dma dev request operation compatible for both DT and non-DT cases. It takes the all the arguments required for dma_request_slave_channel and dma_request_channel. If the driver is initiated via DT or non-DT the corresponding call will be made. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/* arch/arm/plat-samsung/include/plat/dma-ops.h
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Samsung DMA support
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __SAMSUNG_DMA_OPS_H_
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#define __SAMSUNG_DMA_OPS_H_ __FILE__
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#include <linux/dmaengine.h>
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#include <mach/dma.h>
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struct samsung_dma_req {
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enum dma_transaction_type cap;
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struct property *dt_dmach_prop;
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struct s3c2410_dma_client *client;
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};
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struct samsung_dma_prep {
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enum dma_transaction_type cap;
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enum dma_transfer_direction direction;
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dma_addr_t buf;
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unsigned long period;
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unsigned long len;
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void (*fp)(void *data);
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void *fp_param;
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};
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struct samsung_dma_config {
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enum dma_transfer_direction direction;
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enum dma_slave_buswidth width;
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dma_addr_t fifo;
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};
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struct samsung_dma_ops {
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unsigned (*request)(enum dma_ch ch, struct samsung_dma_req *param,
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struct device *dev, char *ch_name);
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int (*release)(unsigned ch, void *param);
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int (*config)(unsigned ch, struct samsung_dma_config *param);
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int (*prepare)(unsigned ch, struct samsung_dma_prep *param);
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int (*trigger)(unsigned ch);
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int (*started)(unsigned ch);
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int (*flush)(unsigned ch);
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int (*stop)(unsigned ch);
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};
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extern void *samsung_dmadev_get_ops(void);
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extern void *s3c_dma_get_ops(void);
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static inline void *__samsung_dma_get_ops(void)
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{
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if (samsung_dma_is_dmadev())
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return samsung_dmadev_get_ops();
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else
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return s3c_dma_get_ops();
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}
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/*
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* samsung_dma_get_ops
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* get the set of samsung dma operations
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*/
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#define samsung_dma_get_ops() __samsung_dma_get_ops()
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#endif /* __SAMSUNG_DMA_OPS_H_ */
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