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390 lines
14 KiB
Plaintext
390 lines
14 KiB
Plaintext
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#
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# USB Gadget support on a system involves
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# (a) a peripheral controller, and
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# (b) the gadget driver using it.
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#
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# NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
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#
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# - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
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# - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
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# - Some systems have both kinds of of controller.
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#
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# With help from a special transceiver and a "Mini-AB" jack, systems with
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# both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
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#
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menu "USB Gadget Support"
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config USB_GADGET
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tristate "Support for USB Gadgets"
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help
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USB is a master/slave protocol, organized with one master
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host (such as a PC) controlling up to 127 peripheral devices.
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The USB hardware is asymmetric, which makes it easier to set up:
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you can't connect a "to-the-host" connector to a peripheral.
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Linux can run in the host, or in the peripheral. In both cases
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you need a low level bus controller driver, and some software
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talking to it. Peripheral controllers are often discrete silicon,
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or are integrated with the CPU in a microcontroller. The more
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familiar host side controllers have names like like "EHCI", "OHCI",
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or "UHCI", and are usually integrated into southbridges on PC
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motherboards.
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Enable this configuration option if you want to run Linux inside
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a USB peripheral device. Configure one hardware driver for your
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peripheral/device side bus controller, and a "gadget driver" for
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your peripheral protocol. (If you use modular gadget drivers,
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you may configure more than one.)
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If in doubt, say "N" and don't enable these drivers; most people
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don't have this kind of hardware (except maybe inside Linux PDAs).
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For more information, see <http://www.linux-usb.org/gadget> and
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the kernel DocBook documentation for this API.
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config USB_GADGET_DEBUG_FILES
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boolean "Debugging information files"
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depends on USB_GADGET && PROC_FS
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help
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Some of the drivers in the "gadget" framework can expose
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debugging information in files such as /proc/driver/udc
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(for a peripheral controller). The information in these
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files may help when you're troubleshooting or bringing up a
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driver on a new board. Enable these files by choosing "Y"
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here. If in doubt, or to conserve kernel memory, say "N".
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#
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# USB Peripheral Controller Support
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#
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choice
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prompt "USB Peripheral Controller"
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depends on USB_GADGET
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help
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A USB device uses a controller to talk to its host.
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Systems should have only one such upstream link.
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Many controller drivers are platform-specific; these
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often need board-specific hooks.
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config USB_GADGET_NET2280
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boolean "NetChip 2280"
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depends on PCI
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select USB_GADGET_DUALSPEED
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help
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NetChip 2280 is a PCI based USB peripheral controller which
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supports both full and high speed USB 2.0 data transfers.
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It has six configurable endpoints, as well as endpoint zero
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(for control transfers) and several endpoints with dedicated
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functions.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "net2280" and force all
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gadget drivers to also be dynamically linked.
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config USB_NET2280
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tristate
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depends on USB_GADGET_NET2280
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default USB_GADGET
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config USB_GADGET_PXA2XX
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boolean "PXA 25x or IXP 4xx"
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depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
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help
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Intel's PXA 25x series XScale ARM-5TE processors include
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an integrated full speed USB 1.1 device controller. The
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controller in the IXP 4xx series is register-compatible.
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It has fifteen fixed-function endpoints, as well as endpoint
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zero (for control transfers).
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "pxa2xx_udc" and force all
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gadget drivers to also be dynamically linked.
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config USB_PXA2XX
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tristate
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depends on USB_GADGET_PXA2XX
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default USB_GADGET
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# if there's only one gadget driver, using only two bulk endpoints,
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# don't waste memory for the other endpoints
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config USB_PXA2XX_SMALL
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depends on USB_GADGET_PXA2XX
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bool
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default n if USB_ETH_RNDIS
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default y if USB_ZERO
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default y if USB_ETH
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default y if USB_G_SERIAL
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config USB_GADGET_GOKU
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boolean "Toshiba TC86C001 'Goku-S'"
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depends on PCI
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help
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The Toshiba TC86C001 is a PCI device which includes controllers
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for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
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The device controller has three configurable (bulk or interrupt)
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endpoints, plus endpoint zero (for control transfers).
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "goku_udc" and to force all
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gadget drivers to also be dynamically linked.
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config USB_GOKU
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tristate
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depends on USB_GADGET_GOKU
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default USB_GADGET
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config USB_GADGET_LH7A40X
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boolean "LH7A40X"
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depends on ARCH_LH7A40X
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help
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This driver provides USB Device Controller driver for LH7A40x
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config USB_LH7A40X
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tristate
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depends on USB_GADGET_LH7A40X
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default USB_GADGET
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config USB_GADGET_OMAP
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boolean "OMAP USB Device Controller"
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depends on ARCH_OMAP
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select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
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help
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Many Texas Instruments OMAP processors have flexible full
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speed USB device controllers, with support for up to 30
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endpoints (plus endpoint zero). This driver supports the
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controller in the OMAP 1611, and should work with controllers
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in other OMAP processors too, given minor tweaks.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "omap_udc" and force all
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gadget drivers to also be dynamically linked.
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config USB_OMAP
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tristate
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depends on USB_GADGET_OMAP
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default USB_GADGET
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config USB_OTG
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boolean "OTG Support"
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depends on USB_GADGET_OMAP && ARCH_OMAP_OTG && USB_OHCI_HCD
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help
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The most notable feature of USB OTG is support for a
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"Dual-Role" device, which can act as either a device
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or a host. The initial role choice can be changed
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later, when two dual-role devices talk to each other.
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Select this only if your OMAP board has a Mini-AB connector.
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config USB_GADGET_DUMMY_HCD
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boolean "Dummy HCD (DEVELOPMENT)"
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depends on USB && EXPERIMENTAL
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select USB_GADGET_DUALSPEED
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help
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This host controller driver emulates USB, looping all data transfer
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requests back to a USB "gadget driver" in the same host. The host
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side is the master; the gadget side is the slave. Gadget drivers
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can be high, full, or low speed; and they have access to endpoints
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like those from NET2280, PXA2xx, or SA1100 hardware.
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This may help in some stages of creating a driver to embed in a
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Linux device, since it lets you debug several parts of the gadget
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driver without its hardware or drivers being involved.
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Since such a gadget side driver needs to interoperate with a host
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side Linux-USB device driver, this may help to debug both sides
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of a USB protocol stack.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "dummy_hcd" and force all
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gadget drivers to also be dynamically linked.
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config USB_DUMMY_HCD
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tristate
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depends on USB_GADGET_DUMMY_HCD
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default USB_GADGET
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# NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
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# first and will be selected by default.
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endchoice
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config USB_GADGET_DUALSPEED
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bool
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depends on USB_GADGET
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default n
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help
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Means that gadget drivers should include extra descriptors
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and code to handle dual-speed controllers.
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#
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# USB Gadget Drivers
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#
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choice
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tristate "USB Gadget Drivers"
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depends on USB_GADGET
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default USB_ETH
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help
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A Linux "Gadget Driver" talks to the USB Peripheral Controller
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driver through the abstract "gadget" API. Some other operating
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systems call these "client" drivers, of which "class drivers"
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are a subset (implementing a USB device class specification).
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A gadget driver implements one or more USB functions using
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the peripheral hardware.
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Gadget drivers are hardware-neutral, or "platform independent",
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except that they sometimes must understand quirks or limitations
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of the particular controllers they work with. For example, when
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a controller doesn't support alternate configurations or provide
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enough of the right types of endpoints, the gadget driver might
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not be able work with that controller, or might need to implement
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a less common variant of a device class protocol.
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# this first set of drivers all depend on bulk-capable hardware.
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config USB_ZERO
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tristate "Gadget Zero (DEVELOPMENT)"
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depends on EXPERIMENTAL
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help
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Gadget Zero is a two-configuration device. It either sinks and
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sources bulk data; or it loops back a configurable number of
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transfers. It also implements control requests, for "chapter 9"
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conformance. The driver needs only two bulk-capable endpoints, so
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it can work on top of most device-side usb controllers. It's
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useful for testing, and is also a working example showing how
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USB "gadget drivers" can be written.
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Make this be the first driver you try using on top of any new
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USB peripheral controller driver. Then you can use host-side
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test software, like the "usbtest" driver, to put your hardware
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and its driver through a basic set of functional tests.
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Gadget Zero also works with the host-side "usb-skeleton" driver,
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and with many kinds of host-side test software. You may need
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to tweak product and vendor IDs before host software knows about
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this device, and arrange to select an appropriate configuration.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "g_zero".
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config USB_ZERO_HNPTEST
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boolean "HNP Test Device"
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depends on USB_ZERO && USB_OTG
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help
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You can configure this device to enumerate using the device
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identifiers of the USB-OTG test device. That means that when
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this gadget connects to another OTG device, with this one using
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the "B-Peripheral" role, that device will use HNP to let this
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one serve as the USB host instead (in the "B-Host" role).
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config USB_ETH
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tristate "Ethernet Gadget (with CDC Ethernet support)"
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depends on NET
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help
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This driver implements Ethernet style communication, in either
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of two ways:
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- The "Communication Device Class" (CDC) Ethernet Control Model.
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That protocol is often avoided with pure Ethernet adapters, in
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favor of simpler vendor-specific hardware, but is widely
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supported by firmware for smart network devices.
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- On hardware can't implement that protocol, a simple CDC subset
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is used, placing fewer demands on USB.
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RNDIS support is a third option, more demanding than that subset.
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Within the USB device, this gadget driver exposes a network device
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"usbX", where X depends on what other networking devices you have.
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Treat it like a two-node Ethernet link: host, and gadget.
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The Linux-USB host-side "usbnet" driver interoperates with this
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driver, so that deep I/O queues can be supported. On 2.4 kernels,
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use "CDCEther" instead, if you're using the CDC option. That CDC
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mode should also interoperate with standard CDC Ethernet class
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drivers on other host operating systems.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "g_ether".
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config USB_ETH_RNDIS
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bool "RNDIS support (EXPERIMENTAL)"
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depends on USB_ETH && EXPERIMENTAL
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default y
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help
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Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
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and Microsoft provides redistributable binary RNDIS drivers for
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older versions of Windows.
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If you say "y" here, the Ethernet gadget driver will try to provide
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a second device configuration, supporting RNDIS to talk to such
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Microsoft USB hosts.
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To make MS-Windows work with this, use Documentation/usb/linux.inf
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as the "driver info file". For versions of MS-Windows older than
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XP, you'll need to download drivers from Microsoft's website; a URL
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is given in comments found in that info file.
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config USB_GADGETFS
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tristate "Gadget Filesystem (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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help
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This driver provides a filesystem based API that lets user mode
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programs implement a single-configuration USB device, including
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endpoint I/O and control requests that don't relate to enumeration.
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All endpoints, transfer speeds, and transfer types supported by
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the hardware are available, through read() and write() calls.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "gadgetfs".
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config USB_FILE_STORAGE
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tristate "File-backed Storage Gadget"
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help
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The File-backed Storage Gadget acts as a USB Mass Storage
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disk drive. As its storage repository it can use a regular
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file or a block device (in much the same way as the "loop"
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device driver), specified as a module parameter.
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Say "y" to link the driver statically, or "m" to build a
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dynamically linked module called "g_file_storage".
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config USB_FILE_STORAGE_TEST
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bool "File-backed Storage Gadget testing version"
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depends on USB_FILE_STORAGE
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default n
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help
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Say "y" to generate the larger testing version of the
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File-backed Storage Gadget, useful for probing the
|
||
|
|
behavior of USB Mass Storage hosts. Not needed for
|
||
|
|
normal operation.
|
||
|
|
|
||
|
|
config USB_G_SERIAL
|
||
|
|
tristate "Serial Gadget (with CDC ACM support)"
|
||
|
|
help
|
||
|
|
The Serial Gadget talks to the Linux-USB generic serial driver.
|
||
|
|
This driver supports a CDC-ACM module option, which can be used
|
||
|
|
to interoperate with MS-Windows hosts or with the Linux-USB
|
||
|
|
"cdc-acm" driver.
|
||
|
|
|
||
|
|
Say "y" to link the driver statically, or "m" to build a
|
||
|
|
dynamically linked module called "g_serial".
|
||
|
|
|
||
|
|
For more information, see Documentation/usb/gadget_serial.txt
|
||
|
|
which includes instructions and a "driver info file" needed to
|
||
|
|
make MS-Windows work with this driver.
|
||
|
|
|
||
|
|
|
||
|
|
# put drivers that need isochronous transfer support (for audio
|
||
|
|
# or video class gadget drivers), or specific hardware, here.
|
||
|
|
|
||
|
|
# - none yet
|
||
|
|
|
||
|
|
endchoice
|
||
|
|
|
||
|
|
endmenu
|