Re: [RFC PATCH v4 0/9]

[Shawn Lin]

å 2015/8/6 15:08, Jaehoon Chung åé:
> 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...
 Sorry, I forgot it, and will fix in next version...

> 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(-)


--
Shawn Lin


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