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mmc: sunxi: Add driver for SD/MMC hosts found on Allwinner sunxi SoCs

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The Allwinner sunxi mmc host uses dma in bus-master mode using a built-in
designware idmac controller, which is identical to the one found in the mmc-dw
hosts. However the rest of the host is not identical to mmc-dw, it deals with
sending stop commands in hardware which makes it significantly different
from the mmc-dw devices.

Signed-off-by: David Lanzendörfer <[email protected]>
[[email protected]: various cleanups and fixes]
Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Maxime Ripard <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
Acked-by: Chris Ball <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>
This commit is contained in:
David Lanzendörfer 2014-05-12 14:04:48 +02:00 • committed by Mike Turquette
commit 3cbcb16095
4 changed files with 1100 additions and 0 deletions
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7
drivers/mmc/host/Kconfig
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@ -694,3 +694,10 @@ config MMC_REALTEK_PCI
help
Say Y here to include driver code to support SD/MMC card interface
of Realtek PCI-E card reader
config MMC_SUNXI
tristate "Allwinner sunxi SD/MMC Host Controller support"
depends on ARCH_SUNXI
help
This selects support for the SD/MMC Host Controller on
Allwinner sunxi SoCs.

1
drivers/mmc/host/Makefile
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@ -50,6 +50,7 @@ obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o
obj-$(CONFIG_MMC_VUB300) += vub300.o
obj-$(CONFIG_MMC_USHC) += ushc.o
obj-$(CONFIG_MMC_WMT) += wmt-sdmmc.o
obj-$(CONFIG_MMC_SUNXI) += sunxi-mmc.o
obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o

1049
drivers/mmc/host/sunxi-mmc.c Normal file
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