Commit d774efea authored by Tony Olech's avatar Tony Olech Committed by Greg Kroah-Hartman
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USB: u132-hcd: host controller driver for ELAN U132 adapter 



This "u132-hcd" module is one half of the "driver" for
ELAN's U132 which is a USB to CardBus OHCI controller
adapter. This module needs the "ftdi-elan" module in
order to communicate to CardBus OHCI controller inserted
into the U132 adapter.

When the "ftdi-elan" module detects a supported CardBus
OHCI controller in the U132 adapter it loads this "u132-hcd"
module.

Upon a successful device probe() the single workqueue
is started up which does all the processing of commands
from the USB core that implement the host controller.

The workqueue maintains the urb queues and issues commands
via the functions exported by the "ftdi-elan" module. Each
such command will result in a callback.

Note that the "ftdi-elan" module is a USB client driver.

Note that this "u132-hcd" module is a (cut-down OHCI)
host controller.

Thus we have a topology with the parent of a host controller
being a USB client! This really stresses the USB subsystem
semaphore/mutex handling in the module removal.

Signed-off-by: default avatarTony Olech <tony.olech@elandigitalsystems.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent a5c66e4b

drivers/usb/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ obj-$(CONFIG_USB_ISP116X_HCD) += host/ 
obj-$(CONFIG_USB_OHCI_HCD)	+= host/

obj-$(CONFIG_USB_UHCI_HCD)	+= host/

obj-$(CONFIG_USB_SL811_HCD)	+= host/

obj-$(CONFIG_USB_U132_HCD)	+= host/

obj-$(CONFIG_ETRAX_USB_HOST)	+= host/

obj-$(CONFIG_USB_OHCI_AT91)	+= host/

drivers/usb/host/Kconfig

+28 −0
Original line number Diff line number Diff line
@@ -142,6 +142,34 @@ config USB_UHCI_HCD 
	  To compile this driver as a module, choose M here: the

	  module will be called uhci-hcd.



config USB_U132_HCD

	tristate "Elan U132 Adapter Host Controller"

	depends on USB && USB_FTDI_ELAN

	default M

	help

	  The U132 adapter is a USB to CardBus adapter specifically designed

	  for PC cards that contain an OHCI host controller. Typical PC cards

	  are the Orange Mobile 3G Option GlobeTrotter Fusion card. The U132

	  adapter will *NOT* work with PC cards that do not contain an OHCI

	  controller.



	  For those PC cards that contain multiple OHCI controllers only ther

	  first one is used.



	  The driver consists of two modules, the "ftdi-elan" module is a

	  USB client driver that interfaces to the FTDI chip within ELAN's

	  USB-to-PCMCIA adapter, and this "u132-hcd" module is a USB host

	  controller driver that talks to the OHCI controller within the

	  CardBus cards that are inserted in the U132 adapter.



	  This driver has been tested with a CardBus OHCI USB adapter, and

	  worked with a USB PEN Drive inserted into the first USB port of

	  the PCCARD. A rather pointless thing to do, but useful for testing.



	  It is safe to say M here.



	  See also <http://www.elandigitalsystems.com/support/ufaq/u132linux.php>



config USB_SL811_HCD

	tristate "SL811HS HCD support"

	depends on USB

drivers/usb/host/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -14,4 +14,5 @@ obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o 
obj-$(CONFIG_USB_UHCI_HCD)	+= uhci-hcd.o

obj-$(CONFIG_USB_SL811_HCD)	+= sl811-hcd.o

obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o

obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o

obj-$(CONFIG_ETRAX_ARCH_V10)	+= hc_crisv10.o

drivers/usb/host/u132-hcd.c

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