Commit 88095e7b authored by Tony Olech's avatar Tony Olech Committed by Chris Ball
Browse files

mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver 



Add a driver for Elan Digital System's VUB300 chip which is a USB
connected SDIO/SDmem/MMC host controller.  A VUB300 chip enables a USB 2.0
or USB 1.1 connected host computer to use SDIO/SD/MMC cards without the
need for a directly connected, for example via PCI, SDIO host controller.

Signed-off-by: default avatarAnthony F Olech <tony.olech@elandigitalsystems.com>
[cjb: various punctuation and style fixes]
Tested-by: default avatarChris Ball <cjb@laptop.org>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 73627f7c

MAINTAINERS

+7 −0
Original line number Diff line number Diff line
@@ -6778,6 +6778,13 @@ L: lm-sensors@lm-sensors.org 
S:	Maintained

F:	drivers/hwmon/vt8231.c



VUB300 USB to SDIO/SD/MMC bridge chip

M:	Tony Olech <tony.olech@elandigitalsystems.com>

L:	linux-mmc@vger.kernel.org

L:	linux-usb@vger.kernel.org

S:	Supported

F:	drivers/mmc/host/vub300.c



W1 DALLAS'S 1-WIRE BUS

M:	Evgeniy Polyakov <johnpol@2ka.mipt.ru>

S:	Maintained

drivers/mmc/host/Kconfig

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@@ -535,6 +535,37 @@ config MMC_JZ4740 
	  If you have a board based on such a SoC and with a SD/MMC slot,

	  say Y or M here.



config MMC_VUB300

	tristate "VUB300 USB to SDIO/SD/MMC Host Controller support"

	depends on USB

	help

	  This selects support for Elan Digital Systems' VUB300 chip.



	  The VUB300 is a USB-SDIO Host Controller Interface chip

	  that enables the host computer to use SDIO/SD/MMC cards

	  via a USB 2.0 or USB 1.1 host.



	  The VUB300 chip will be found in both physically separate

	  USB to SDIO/SD/MMC adapters and embedded on some motherboards.



	  The VUB300 chip supports SD and MMC memory cards in addition

	  to single and multifunction SDIO cards.



	  Some SDIO cards will need a firmware file to be loaded and

	  sent to VUB300 chip in order to achieve better data throughput.

	  Download these "Offload Pseudocode" from Elan Digital Systems'

	  web-site http://www.elandigitalsystems.com/support/downloads.php

	  and put them in /lib/firmware. Note that without these additional

	  firmware files the VUB300 chip will still function, but not at

	  the best obtainable data rate.



	  To compile this mmc host controller driver as a module,

	  choose M here: the module will be called vub300.



	  If you have a computer with an embedded VUB300 chip

	  or if you intend connecting a USB adapter based on a

	  VUB300 chip say Y or M here.



config MMC_USHC

	tristate "USB SD Host Controller (USHC) support"

	depends on USB

drivers/mmc/host/Makefile

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@@ -41,6 +41,7 @@ obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o 
obj-$(CONFIG_MMC_DW)		+= dw_mmc.o

obj-$(CONFIG_MMC_SH_MMCIF)	+= sh_mmcif.o

obj-$(CONFIG_MMC_JZ4740)	+= jz4740_mmc.o

obj-$(CONFIG_MMC_VUB300)	+= vub300.o

obj-$(CONFIG_MMC_USHC)		+= ushc.o



obj-$(CONFIG_MMC_SDHCI_PLTFM)			+= sdhci-platform.o

drivers/mmc/host/vub300.c

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