| # |
| # 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 of controller. |
| # |
| # 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 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_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_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_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_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 |
| endpoints (plus endpoint zero). This driver supports the |
| controller in the OMAP 1611, and should work with controllers |
| in other OMAP processors too, given minor tweaks. |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "omap_udc" and force all |
| gadget drivers to also be dynamically linked. |
| |
| config USB_OMAP |
| tristate |
| depends on USB_GADGET_OMAP |
| default USB_GADGET |
| select USB_GADGET_SELECTED |
| |
| config USB_OTG |
| boolean "OTG Support" |
| depends on USB_GADGET_OMAP && ARCH_OMAP_OTG && USB_OHCI_HCD |
| help |
| The most notable feature of USB OTG is support for a |
| "Dual-Role" device, which can act as either a device |
| or a host. The initial role choice can be changed |
| later, when two dual-role devices talk to each other. |
| |
| Select this only if your OMAP board has a Mini-AB connector. |
| |
| config USB_GADGET_AT91 |
| boolean "AT91 USB Device Port" |
| depends on ARCH_AT91RM9200 |
| select USB_GADGET_SELECTED |
| help |
| Many Atmel AT91 processors (such as the AT91RM2000) have a |
| full speed USB Device Port with support for five configurable |
| endpoints (plus endpoint zero). |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "at91_udc" and force all |
| gadget drivers to also be dynamically linked. |
| |
| config USB_AT91 |
| tristate |
| depends on USB_GADGET_AT91 |
| default USB_GADGET |
| |
| config USB_GADGET_DUMMY_HCD |
| boolean "Dummy HCD (DEVELOPMENT)" |
| depends on USB && EXPERIMENTAL |
| select USB_GADGET_DUALSPEED |
| help |
| This host controller driver emulates USB, looping all data transfer |
| requests back to a USB "gadget driver" in the same host. The host |
| side is the master; the gadget side is the slave. Gadget drivers |
| can be high, full, or low speed; and they have access to endpoints |
| like those from NET2280, PXA2xx, or SA1100 hardware. |
| |
| This may help in some stages of creating a driver to embed in a |
| Linux device, since it lets you debug several parts of the gadget |
| driver without its hardware or drivers being involved. |
| |
| Since such a gadget side driver needs to interoperate with a host |
| side Linux-USB device driver, this may help to debug both sides |
| of a USB protocol stack. |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "dummy_hcd" and force all |
| gadget drivers to also be dynamically linked. |
| |
| config USB_DUMMY_HCD |
| tristate |
| depends on USB_GADGET_DUMMY_HCD |
| default USB_GADGET |
| select USB_GADGET_SELECTED |
| |
| # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears |
| # first and will be selected by default. |
| |
| endchoice |
| |
| config USB_GADGET_DUALSPEED |
| bool |
| depends on USB_GADGET |
| default n |
| help |
| Means that gadget drivers should include extra descriptors |
| and code to handle dual-speed controllers. |
| |
| # |
| # USB Gadget Drivers |
| # |
| choice |
| tristate "USB Gadget Drivers" |
| depends on USB_GADGET && USB_GADGET_SELECTED |
| default USB_ETH |
| help |
| A Linux "Gadget Driver" talks to the USB Peripheral Controller |
| driver through the abstract "gadget" API. Some other operating |
| systems call these "client" drivers, of which "class drivers" |
| are a subset (implementing a USB device class specification). |
| A gadget driver implements one or more USB functions using |
| the peripheral hardware. |
| |
| Gadget drivers are hardware-neutral, or "platform independent", |
| except that they sometimes must understand quirks or limitations |
| of the particular controllers they work with. For example, when |
| a controller doesn't support alternate configurations or provide |
| enough of the right types of endpoints, the gadget driver might |
| not be able work with that controller, or might need to implement |
| a less common variant of a device class protocol. |
| |
| # this first set of drivers all depend on bulk-capable hardware. |
| |
| config USB_ZERO |
| tristate "Gadget Zero (DEVELOPMENT)" |
| depends on EXPERIMENTAL |
| help |
| Gadget Zero is a two-configuration device. It either sinks and |
| sources bulk data; or it loops back a configurable number of |
| transfers. It also implements control requests, for "chapter 9" |
| conformance. The driver needs only two bulk-capable endpoints, so |
| it can work on top of most device-side usb controllers. It's |
| useful for testing, and is also a working example showing how |
| USB "gadget drivers" can be written. |
| |
| Make this be the first driver you try using on top of any new |
| USB peripheral controller driver. Then you can use host-side |
| test software, like the "usbtest" driver, to put your hardware |
| and its driver through a basic set of functional tests. |
| |
| Gadget Zero also works with the host-side "usb-skeleton" driver, |
| and with many kinds of host-side test software. You may need |
| to tweak product and vendor IDs before host software knows about |
| this device, and arrange to select an appropriate configuration. |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "g_zero". |
| |
| config USB_ZERO_HNPTEST |
| boolean "HNP Test Device" |
| depends on USB_ZERO && USB_OTG |
| help |
| You can configure this device to enumerate using the device |
| identifiers of the USB-OTG test device. That means that when |
| this gadget connects to another OTG device, with this one using |
| the "B-Peripheral" role, that device will use HNP to let this |
| one serve as the USB host instead (in the "B-Host" role). |
| |
| config USB_ETH |
| tristate "Ethernet Gadget (with CDC Ethernet support)" |
| depends on NET |
| help |
| This driver implements Ethernet style communication, in either |
| of two ways: |
| |
| - The "Communication Device Class" (CDC) Ethernet Control Model. |
| That protocol is often avoided with pure Ethernet adapters, in |
| favor of simpler vendor-specific hardware, but is widely |
| supported by firmware for smart network devices. |
| |
| - On hardware can't implement that protocol, a simple CDC subset |
| is used, placing fewer demands on USB. |
| |
| RNDIS support is a third option, more demanding than that subset. |
| |
| Within the USB device, this gadget driver exposes a network device |
| "usbX", where X depends on what other networking devices you have. |
| Treat it like a two-node Ethernet link: host, and gadget. |
| |
| The Linux-USB host-side "usbnet" driver interoperates with this |
| driver, so that deep I/O queues can be supported. On 2.4 kernels, |
| use "CDCEther" instead, if you're using the CDC option. That CDC |
| mode should also interoperate with standard CDC Ethernet class |
| drivers on other host operating systems. |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "g_ether". |
| |
| config USB_ETH_RNDIS |
| bool "RNDIS support (EXPERIMENTAL)" |
| depends on USB_ETH && EXPERIMENTAL |
| default y |
| help |
| Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol, |
| and Microsoft provides redistributable binary RNDIS drivers for |
| older versions of Windows. |
| |
| If you say "y" here, the Ethernet gadget driver will try to provide |
| a second device configuration, supporting RNDIS to talk to such |
| Microsoft USB hosts. |
| |
| To make MS-Windows work with this, use Documentation/usb/linux.inf |
| as the "driver info file". For versions of MS-Windows older than |
| XP, you'll need to download drivers from Microsoft's website; a URL |
| is given in comments found in that info file. |
| |
| config USB_GADGETFS |
| tristate "Gadget Filesystem (EXPERIMENTAL)" |
| depends on EXPERIMENTAL |
| help |
| This driver provides a filesystem based API that lets user mode |
| programs implement a single-configuration USB device, including |
| endpoint I/O and control requests that don't relate to enumeration. |
| All endpoints, transfer speeds, and transfer types supported by |
| the hardware are available, through read() and write() calls. |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "gadgetfs". |
| |
| config USB_FILE_STORAGE |
| tristate "File-backed Storage Gadget" |
| help |
| The File-backed Storage Gadget acts as a USB Mass Storage |
| disk drive. As its storage repository it can use a regular |
| file or a block device (in much the same way as the "loop" |
| device driver), specified as a module parameter. |
| |
| Say "y" to link the driver statically, or "m" to build a |
| dynamically linked module called "g_file_storage". |
| |
| config USB_FILE_STORAGE_TEST |
| bool "File-backed Storage Gadget testing version" |
| depends on USB_FILE_STORAGE |
| default n |
| help |
| Say "y" to generate the larger testing version of the |
| 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 |
