On Fri, Jun 09, 2017 at 09:39:49AM +0200, Geert Uytterhoeven wrote:
> Hi Simon,
>
> On Thu, Jun 8, 2017 at 3:13 PM, Simon Horman <horms+renesas@xxxxxxxxxxxx> wrote:
> > R-Car Gen3 has a dedicated DMA controller for SDHI module. Since
> > the DMAC is in a part of SDHI module and is not suitable as dmaengine,
>
> the DMAC is part of the SDHI module?
>
> > this patch adds a different code as tmio_mmc_dma_gen3.c.
>
> adds different code?
>
> > --- a/drivers/mmc/host/Kconfig
> > +++ b/drivers/mmc/host/Kconfig
> > @@ -575,10 +575,27 @@ config MMC_SDHI
> > depends on SUPERH || ARM || ARM64
> > depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
> > select MMC_TMIO_CORE
> > + select MMC_SDHI_SYS_DMAC if (SUPERH || ARM)
> > + select MMC_SDHI_INTERNAL_DMAC if ARM64
> > help
> > This provides support for the SDHI SD/SDIO controller found in
> > Renesas SuperH, ARM and ARM64 based SoCs
> >
> > +config MMC_SDHI_SYS_DMAC
> > + tristate "DMA support use of SYS DMAC with SDHI SD/SDIO controller"
>
> DMA support for SYS_DMAC?
How about this?
config MMC_SDHI_SYS_DMAC
tristate "DMA for SDHI SD/SDIO controllers using SYS-DMAC"
...
help
This provides DMA support for the SDHI SD/SDIO controllers
using SYS-DMAC via DMA Engine. This supports the controllers
found in SuperH and Renesas ARM based SoCs.
config MMC_SDHI_INTERNAL_DMAC
tristate "DMA for SDHI SD/SDIO controllers using on-chip bus mastering"
...
help
This provides DMA support for the SDHI SD/SDIO controllers
using on-chip bus mastering. This supports the controllers
found in arm64 based SoCs.
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
>
