Hi,
On 1 December 2015 at 04:13, Mugunthan V N <mugunthan...@ti.com> wrote:
> Add dma memcpy api to the default spi_flash_copy_mmap(), so that
> dma will be used to copy data when DM_DMA is defined for the
> platform.
>
> Signed-off-by: Mugunthan V N <mugunthan...@ti.com>
> ---
> drivers/mtd/spi/sf_ops.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c
> index 3a56d7f..3c83f8a 100644
> --- a/drivers/mtd/spi/sf_ops.c
> +++ b/drivers/mtd/spi/sf_ops.c
> @@ -16,6 +16,7 @@
> #include <watchdog.h>
> #include <linux/compiler.h>
> #include <linux/log2.h>
> +#include <dma.h>
>
> #include "sf_internal.h"
>
> @@ -389,6 +390,10 @@ int spi_flash_read_common(struct spi_flash *flash, const
> u8 *cmd,
>
> void __weak spi_flash_copy_mmap(void *data, void *offset, size_t len)
> {
> +#ifdef CONFIG_DM_DMA
> + if (!dma_memcpy(data, offset, len))
> + return;
> +#endif
> memcpy(data, offset, len);
> }
>
> --
> 2.6.3.368.gf34be46
>
This looks like one driver (SPI flash) calling a weak function in
another (SPI). Why isn't this done with the driver interface?
Regards,
Simon
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