On Mon, 3 Dec 2018 at 17:01, Faiz Abbas <faiz_abbas@xxxxxx> wrote: > > Hi Chunyan, > > On 29/11/18 2:53 PM, Adrian Hunter wrote: > > On 29/11/18 8:07 AM, Chunyan Zhang wrote: > >> Some standard SD host controllers can support both external dma > >> controllers as well as ADMA/SDMA in which the SD host controller > >> acts as DMA master. TI's omap controller is the case as an example. > >> > >> Currently the generic SDHCI code supports ADMA/SDMA integrated in > >> the host controller but does not have any support for external DMA > >> controllers implemented using dmaengine, meaning that custom code is > >> needed for any systems that use an external DMA controller with SDHCI. > >> > >> Signed-off-by: Chunyan Zhang <zhang.chunyan@xxxxxxxxxx> > >> --- > >> drivers/mmc/host/Kconfig | 14 ++++ > >> drivers/mmc/host/sdhci.c | 185 ++++++++++++++++++++++++++++++++++++++++++++++- > >> drivers/mmc/host/sdhci.h | 8 ++ > >> 3 files changed, 206 insertions(+), 1 deletion(-) > >> > >> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig > >> index 1b58739..4183f43 100644 > >> --- a/drivers/mmc/host/Kconfig > >> +++ b/drivers/mmc/host/Kconfig > >> @@ -969,6 +969,7 @@ config MMC_SDHCI_XENON > >> config MMC_SDHCI_OMAP > >> tristate "TI SDHCI Controller Support">> depends on MMC_SDHCI_PLTFM && OF > >> + select MMC_SDHCI_EXTERNAL_DMA if DMA_ENGINE > > > This should be in patch 2. Ok, will move to. Thanks, Chunyan > > Thanks, > Faiz
