[PATCH v3 0/4] Extend sdhci-esdhc-imx card_detect and write_protect support for mx5

[Shawn Guo]

Hi Arnaud,

Would you please give a test on the series, as it fixed the issue
you reported?  TIA.

-- 
Regards,
Shawn

On Mon, Jun 20, 2011 at 06:38:41PM +0800, Shawn Guo wrote:
> The card-present polling for sdhci based driver is very expensive
> in terms of the impact to system performance.  We observe a few
> system performance issues from Freescale and Linaro on mx5 platforms,
> which have been proved card polling related.
> 
> The patch set extends the current sdhci-esdhc-imx card_detect and
> write_protect support to cover mx5 platforms, and solves above
> performance issues.
> 
> Changes since v2:
>  * Fix the issue reported by Arnaud Patard:
>    http://article.gmane.org/gmane.linux.ports.arm.kernel/120790
> 
> Changes since v1:
>  * Rebase on today's linux-next
>  * Take the suggestion from Arnaud Patard to add default pdata in
>    imx_add_sdhci_esdhc_imx(), to avoid touching every single board
>    file for the platform_data changes
>  * Add comment for sdhci.c change
>  * Change ESDHC_CD(WP)_SIGNAL to ESDHC_CD(WP)_CONTROLLER for a more
>    descriptive name
>  * Add missing NONE case handling in esdhc_pltfm_get_ro
>  * Improve a couple comment wording per suggestion from Wolfram Sang
> 
> Shawn Guo (4):
>       mmc: sdhci: fix interrupt storm from card detection
>       mmc: sdhci-esdhc-imx: SDHCI_CARD_PRESENT does not get cleared
>       mmc: sdhci-esdhc-imx: remove "WP" from flag ESDHC_FLAG_GPIO_FOR_CD_WP
>       mmc: sdhci-esdhc-imx: extend card_detect and write_protect support for mx5
> 
>  arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c     |    3 +-
>  arch/arm/mach-imx/eukrea_mbimxsd35-baseboard.c     |    3 +-
>  arch/arm/mach-imx/mach-mx25_3ds.c                  |    2 +
>  arch/arm/mach-imx/mach-pcm043.c                    |    2 +
>  arch/arm/mach-mx5/board-mx51_babbage.c             |   14 +-
>  arch/arm/mach-mx5/board-mx53_loco.c                |    4 +
>  .../plat-mxc/devices/platform-sdhci-esdhc-imx.c    |   12 ++
>  arch/arm/plat-mxc/include/mach/esdhc.h             |   25 +++-
>  drivers/mmc/host/sdhci-esdhc-imx.c                 |  136 ++++++++++++--------
>  drivers/mmc/host/sdhci.c                           |   27 ++++-
>  10 files changed, 161 insertions(+), 67 deletions(-)
> --
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