[PATCH 07/15] ARM: EXYNOS4: Use generic DMA PL330 driver

[Thomas Abraham]

Hi Boojin,

On 27 July 2011 11:01, Boojin Kim <boojin.kim at samsung.com> wrote:
> This patch makes Samsung EXYNOS4 to use DMA PL330 driver
> on DMADEVICE. The EXYNOS4 uses DMA generic APIs instead of
> SAMSUNG specific S3C-PL330 APIs.
>
> Signed-off-by: Boojin Kim <boojin.kim at samsung.com>
> Signed-off-by: Kukjin Kim <kgene.kim at samsung.com>
> ---
>  arch/arm/mach-exynos4/Kconfig |    2 +-
>  arch/arm/mach-exynos4/clock.c |   16 ++-
>  arch/arm/mach-exynos4/dma.c   |  299 ++++++++++++++++++++++++++---------------
>  3 files changed, 198 insertions(+), 119 deletions(-)
>

[...]

> diff --git a/arch/arm/mach-exynos4/dma.c b/arch/arm/mach-exynos4/dma.c
> index 564bb53..d57d662 100644

[...]

> +struct dma_pl330_peri pdma0_peri[28] = {
> +       {
> +               .peri_id = (u8)DMACH_PCM0_RX,
> +               .rqtype = DEVTOMEM,
> +       }, {

The client driver specifies the direction of the transfer
(DMA_TO_DEVICE or DMA_FROM_DEVICE) when requesting for a dma channel.
So, is the rqtype parameter required in the platform data for the dma
driver?

Thanks,
Thomas.