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dmaengine: shdma: extend .device_terminate_all() to record partial transfer

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This patch extends the .device_terminate_all() method of the shdma driver
to return number of bytes transfered in the current descriptor.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski
2010-02-18 16:30:02 +00:00
committed by Paul Mundt
parent c8e3149ba7
commit c014906a87
3 changed files with 36 additions and 16 deletions
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20
arch/sh/include/asm/dmaengine.h
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@@ -10,6 +10,9 @@
#ifndef ASM_DMAENGINE_H
#define ASM_DMAENGINE_H
#include <linux/dmaengine.h>
#include <linux/list.h>
#include <asm/dma-register.h>
#define SH_DMAC_MAX_CHANNELS 6
@@ -70,4 +73,21 @@ struct sh_dmae_slave {
struct sh_dmae_slave_config *config; /* Set by the driver */
};
struct sh_dmae_regs {
u32 sar; /* SAR / source address */
u32 dar; /* DAR / destination address */
u32 tcr; /* TCR / transfer count */
};
struct sh_desc {
struct sh_dmae_regs hw;
struct list_head node;
struct dma_async_tx_descriptor async_tx;
enum dma_data_direction direction;
dma_cookie_t cookie;
size_t partial;
int chunks;
int mark;
};
#endif