The card-present polling within 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.
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
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-mx35_3ds.c | 7 +-
arch/arm/mach-imx/mach-pcm043.c | 2 +
arch/arm/mach-imx/mach-vpr200.c | 7 +-
arch/arm/mach-mx5/board-mx51_3ds.c | 7 +-
arch/arm/mach-mx5/board-mx51_babbage.c | 27 +++++-
arch/arm/mach-mx5/board-mx51_efikamx.c | 7 +-
arch/arm/mach-mx5/board-mx51_efikasb.c | 7 +-
arch/arm/mach-mx5/board-mx53_evk.c | 14 +++-
arch/arm/mach-mx5/board-mx53_loco.c | 14 +++-
arch/arm/mach-mx5/board-mx53_smd.c | 21 ++++-
arch/arm/mach-mx5/eukrea_mbimx51-baseboard.c | 14 +++-
arch/arm/mach-mx5/eukrea_mbimxsd-baseboard.c | 7 +-
arch/arm/mach-mx5/mx51_efika.c | 7 +-
arch/arm/plat-mxc/include/mach/esdhc.h | 25 ++++-
drivers/mmc/host/sdhci-esdhc-imx.c | 117 +++++++++++++----------
drivers/mmc/host/sdhci.c | 13 ++-
19 files changed, 225 insertions(+), 79 deletions(-)
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