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    SubjectRe: [RFC PATCH v4 0/9]
    Hi, Shawn.

    I remembered that Krzysztof has mentioned "Fix the title of cover letter."
    Your cover letter's title is nothing.. "[RFC PATCH v4 0/9] " ??
    [RFC PATCH v4 0/9] your title...

    Best Regards,
    Jaehoon Chung

    On 08/06/2015 03:44 PM, Shawn Lin wrote:
    > Add external dma support for Synopsys MSHC
    >
    > Synopsys DesignWare mobile storage host controller supports three
    > types of transfer mode: pio, internal dma and external dma. However,
    > dw_mmc can only supports pio and internal dma now. Thus some platforms
    > using dw-mshc integrated with generic dma can't work in dma mode. So we
    > submit this patch to achieve it.
    >
    > And the config option, CONFIG_MMC_DW_IDMAC, was added by Will Newton
    > (commit:f95f3850) for the first version of dw_mmc and never be touched since
    > then. At that time dt-bindings hadn't been introduced into dw_mmc yet means
    > we should select CONFIG_MMC_DW_IDMAC to enable internal dma mode at compile
    > time. Nowadays, device-tree helps us to support a variety of boards with one
    > kernel. That's why we need to remove it and decide the transfer mode by reading
    > dw_mmc's HCON reg at runtime.
    >
    > This RFC patch needs lots of ACKs. I know it's hard, but it does need someone
    > to make the running.
    >
    > Patch does the following things:
    > - remove CONFIG_MMC_DW_IDMAC config option
    > - add bindings for edmac used by synopsys-dw-mshc
    > at runtime
    > - add edmac support for synopsys-dw-mshc
    >
    > Patch is based on next of git://git.linaro.org/people/ulf.hansson/mmc
    >
    >
    > Changes in v4:
    > - remove "host->trans_mode" and use "host->use_dma" to indicate
    > transfer mode.
    > - remove all bt-bindings' changes since we don't need new properities.
    > - check transfer mode at runtime by reading HCON reg
    > - spilt defconfig changes for each sub-architecture
    > - fix the title of cover letter
    > - reuse some code for reducing code size
    >
    > Changes in v3:
    > - choose transfer mode at runtime
    > - remove all CONFIG_MMC_DW_IDMAC config option
    > - add supports-idmac property for some platforms
    >
    > Changes in v2:
    > - Fix typo of dev_info msg
    > - remove unused dmach from declaration of dw_mci_dma_slave
    >
    > Shawn Lin (9):
    > mmc: dw_mmc: Add external dma interface support
    > Documentation: synopsys-dw-mshc: add bindings for idmac and edmac
    > mips: pistachio_defconfig: remove CONFIG_MMC_DW_IDMAC
    > arc: axs10x_defconfig: remove CONFIG_MMC_DW_IDMAC
    > arm: exynos_defconfig: remove CONFIG_MMC_DW_IDMAC
    > arm: hisi_defconfig: remove CONFIG_MMC_DW_IDMAC
    > arm: lpc18xx_defconfig: remove CONFIG_MMC_DW_IDMAC
    > arm: multi_v7_defconfig: remove CONFIG_MMC_DW_IDMAC
    > arm: zx_defconfig: remove CONFIG_MMC_DW_IDMAC
    >
    > .../devicetree/bindings/mmc/synopsys-dw-mshc.txt | 25 ++
    > arch/arc/configs/axs101_defconfig | 1 -
    > arch/arc/configs/axs103_defconfig | 1 -
    > arch/arc/configs/axs103_smp_defconfig | 1 -
    > arch/arm/configs/exynos_defconfig | 1 -
    > arch/arm/configs/hisi_defconfig | 1 -
    > arch/arm/configs/lpc18xx_defconfig | 1 -
    > arch/arm/configs/multi_v7_defconfig | 1 -
    > arch/arm/configs/zx_defconfig | 1 -
    > arch/mips/configs/pistachio_defconfig | 1 -
    > drivers/mmc/host/Kconfig | 11 +-
    > drivers/mmc/host/dw_mmc-pltfm.c | 2 +
    > drivers/mmc/host/dw_mmc.c | 258 +++++++++++++++++----
    > include/linux/mmc/dw_mmc.h | 27 ++-
    > 14 files changed, 257 insertions(+), 75 deletions(-)
    >



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