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sf: spi_flash: use dma to copy data from mmap region if platform supports

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Add dma memcpy api to the default spi_flash_copy_mmap(), so that
dma will be used to copy data when CONFIG_DMA is defined for the
platform.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
This commit is contained in:
Mugunthan V N 2016-02-15 15:31:39 +05:30 committed by Jagan Teki
parent 58da672d49
commit 7bd1c59bdb
1 changed files with 9 additions and 0 deletions
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9
drivers/mtd/spi/spi_flash.c
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@ -16,6 +16,7 @@
#include <spi.h>
#include <spi_flash.h>
#include <linux/log2.h>
#include <dma.h>
#include "sf_internal.h"
@ -454,8 +455,16 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
return ret;
}
/*
* TODO: remove the weak after all the other spi_flash_copy_mmap
* implementations removed from drivers
*/
void __weak spi_flash_copy_mmap(void *data, void *offset, size_t len)
{
#ifdef CONFIG_DMA
if (!dma_memcpy(data, offset, len))
return;
#endif
memcpy(data, offset, len);
}