kconfig

linux下面gadget设备驱动

#
# USB Gadget support on a system involves
#    (a) a peripheral controller, and
#    (b) the gadget driver using it.
#
# NOTE:  Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
#
#  - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
#  - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
#  - Some systems have both kinds of controllers.
#
# With help from a special transceiver and a "Mini-AB" jack, systems with
# both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
#
menu "USB Gadget Support"

config USB_GADGET
	tristate "Support for USB Gadgets"
	help
	   USB is a master/slave protocol, organized with one master
	   host (such as a PC) controlling up to 127 peripheral devices.
	   The USB hardware is asymmetric, which makes it easier to set up:
	   you can't connect a "to-the-host" connector to a peripheral.

	   Linux can run in the host, or in the peripheral.  In both cases
	   you need a low level bus controller driver, and some software
	   talking to it.  Peripheral controllers are often discrete silicon,
	   or are integrated with the CPU in a microcontroller.  The more
	   familiar host side controllers have names like "EHCI", "OHCI",
	   or "UHCI", and are usually integrated into southbridges on PC
	   motherboards.

	   Enable this configuration option if you want to run Linux inside
	   a USB peripheral device.  Configure one hardware driver for your
	   peripheral/device side bus controller, and a "gadget driver" for
	   your peripheral protocol.  (If you use modular gadget drivers,
	   you may configure more than one.)

	   If in doubt, say "N" and don't enable these drivers; most people
	   don't have this kind of hardware (except maybe inside Linux PDAs).

	   For more information, see <http://www.linux-usb.org/gadget> and
	   the kernel DocBook documentation for this API.

config USB_GADGET_DEBUG
	boolean "Debugging messages"
	depends on USB_GADGET && DEBUG_KERNEL && EXPERIMENTAL
	help
	   Many controller and gadget drivers will print some debugging
	   messages if you use this option to ask for those messages.

	   Avoid enabling these messages, even if you're actively
	   debugging such a driver.  Many drivers will emit so many
	   messages that the driver timings are affected, which will
	   either create new failure modes or remove the one you're
	   trying to track down.  Never enable these messages for a
	   production build.

config USB_GADGET_DEBUG_FILES
	boolean "Debugging information files"
	depends on USB_GADGET && PROC_FS
	help
	   Some of the drivers in the "gadget" framework can expose
	   debugging information in files such as /proc/driver/udc
	   (for a peripheral controller).  The information in these
	   files may help when you're troubleshooting or bringing up a
	   driver on a new board.   Enable these files by choosing "Y"
	   here.  If in doubt, or to conserve kernel memory, say "N".

config USB_GADGET_DEBUG_FS
	boolean "Debugging information files in debugfs"
	depends on USB_GADGET && DEBUG_FS
	help
	   Some of the drivers in the "gadget" framework can expose
	   debugging information in files under /sys/kernel/debug/.
	   The information in these files may help when you're
	   troubleshooting or bringing up a driver on a new board.
	   Enable these files by choosing "Y" here.  If in doubt, or
	   to conserve kernel memory, say "N".

config	USB_GADGET_SELECTED
	boolean

#
# USB Peripheral Controller Support
#
choice
	prompt "USB Peripheral Controller"
	depends on USB_GADGET
	help
	   A USB device uses a controller to talk to its host.
	   Systems should have only one such upstream link.
	   Many controller drivers are platform-specific; these
	   often need board-specific hooks.

config USB_GADGET_JZ4740
	boolean "JZ4740 UDC"
	depends on SOC_JZ4740
	select USB_GADGET_DUALSPEED
	help
    	   Select this to support the Ingenic JZ4740 processor 
           high speed USB device controller.

config USB_JZ4740
	tristate
	depends on USB_GADGET_JZ4740
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_JZ4730
	boolean "JZ4730 UDC"
	depends on SOC_JZ4730
	help
    	   Select this to support the Ingenic JZ4730 processor 
           full speed USB device controller.

config USB_JZ4730
	tristate
	depends on USB_GADGET_JZ4730
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_AMD5536UDC
	boolean "AMD5536 UDC"
	depends on PCI
	select USB_GADGET_DUALSPEED
	help
	   The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
	   It is a USB Highspeed DMA capable USB device controller. Beside ep0
	   it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
	   The UDC port supports OTG operation, and may be used as a host port
	   if it's not being used to implement peripheral or OTG roles.

	   Say "y" to link the driver statically, or "m" to build a
	   dynamically linked module called "amd5536udc" and force all
	   gadget drivers to also be dynamically linked.

config USB_AMD5536UDC
	tristate
	depends on USB_GADGET_AMD5536UDC
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_ATMEL_USBA
	boolean "Atmel USBA"
	select USB_GADGET_DUALSPEED
	depends on AVR32
	help
	  USBA is the integrated high-speed USB Device controller on
	  the AT32AP700x processors from Atmel.

config USB_ATMEL_USBA
	tristate
	depends on USB_GADGET_ATMEL_USBA
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_FSL_USB2
	boolean "Freescale Highspeed USB DR Peripheral Controller"
	depends on MPC834x || PPC_MPC831x
	select USB_GADGET_DUALSPEED
	help
	   Some of Freescale PowerPC processors have a High Speed
	   Dual-Role(DR) USB controller, which supports device mode.

	   The number of programmable endpoints is different through
	   SOC revisions.

	   Say "y" to link the driver statically, or "m" to build a
	   dynamically linked module called "fsl_usb2_udc" and force
	   all gadget drivers to also be dynamically linked.

config USB_FSL_USB2
	tristate
	depends on USB_GADGET_FSL_USB2
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_NET2280
	boolean "NetChip 228x"
	depends on PCI
	select USB_GADGET_DUALSPEED
	help
	   NetChip 2280 / 2282 is a PCI based USB peripheral controller which
	   supports both full and high speed USB 2.0 data transfers.  
	   
	   It has six configurable endpoints, as well as endpoint zero
	   (for control transfers) and several endpoints with dedicated
	   functions.

	   Say "y" to link the driver statically, or "m" to build a
	   dynamically linked module called "net2280" and force all
	   gadget drivers to also be dynamically linked.

config USB_NET2280
	tristate
	depends on USB_GADGET_NET2280
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_PXA2XX
	boolean "PXA 25x or IXP 4xx"
	depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
	help
	   Intel's PXA 25x series XScale ARM-5TE processors include
	   an integrated full speed USB 1.1 device controller.  The
	   controller in the IXP 4xx series is register-compatible.

	   It has fifteen fixed-function endpoints, as well as endpoint
	   zero (for control transfers).

	   Say "y" to link the driver statically, or "m" to build a
	   dynamically linked module called "pxa2xx_udc" and force all
	   gadget drivers to also be dynamically linked.

config USB_PXA2XX
	tristate
	depends on USB_GADGET_PXA2XX
	default USB_GADGET
	select USB_GADGET_SELECTED

# if there's only one gadget driver, using only two bulk endpoints,
# don't waste memory for the other endpoints
config USB_PXA2XX_SMALL
	depends on USB_GADGET_PXA2XX
	bool
	default n if USB_ETH_RNDIS
	default y if USB_ZERO
	default y if USB_ETH
	default y if USB_G_SERIAL

config USB_GADGET_M66592
	boolean "Renesas M66592 USB Peripheral Controller"
	select USB_GADGET_DUALSPEED
	help
	   M66592 is a discrete USB peripheral controller chip that
	   supports both full and high speed USB 2.0 data transfers.
	   It has seven configurable endpoints, and endpoint zero.

	   Say "y" to link the driver statically, or "m" to build a
	   dynamically linked module called "m66592_udc" and force all
	   gadget drivers to also be dynamically linked.

config USB_M66592
	tristate
	depends on USB_GADGET_M66592
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_GOKU
	boolean "Toshiba TC86C001 'Goku-S'"
	depends on PCI
	help
	   The Toshiba TC86C001 is a PCI device which includes controllers
	   for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
	   
	   The device controller has three configurable (bulk or interrupt)
	   endpoints, plus endpoint zero (for control transfers).

	   Say "y" to link the driver statically, or "m" to build a
	   dynamically linked module called "goku_udc" and to force all
	   gadget drivers to also be dynamically linked.

config USB_GOKU
	tristate
	depends on USB_GADGET_GOKU
	default USB_GADGET
	select USB_GADGET_SELECTED


config USB_GADGET_LH7A40X
	boolean "LH7A40X"
	depends on ARCH_LH7A40X
	help
    This driver provides USB Device Controller driver for LH7A40x

config USB_LH7A40X
	tristate
	depends on USB_GADGET_LH7A40X
	default USB_GADGET
	select USB_GADGET_SELECTED

config USB_GADGET_OMAP
	boolean "OMAP USB Device Controller"
	depends on ARCH_OMAP
	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
	help
	   Many Texas Instruments OMAP processors have flexible full
	   speed USB device controllers, with support for up to 30