2 # USB Gadget support on a system involves
3 # (a) a peripheral controller, and
4 # (b) the gadget driver using it.
6 # NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
8 # - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
9 # - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
10 # - Some systems have both kinds of controllers.
12 # With help from a special transceiver and a "Mini-AB" jack, systems with
13 # both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
17 tristate "USB Gadget Support"
19 USB is a master/slave protocol, organized with one master
20 host (such as a PC) controlling up to 127 peripheral devices.
21 The USB hardware is asymmetric, which makes it easier to set up:
22 you can't connect a "to-the-host" connector to a peripheral.
24 Linux can run in the host, or in the peripheral. In both cases
25 you need a low level bus controller driver, and some software
26 talking to it. Peripheral controllers are often discrete silicon,
27 or are integrated with the CPU in a microcontroller. The more
28 familiar host side controllers have names like "EHCI", "OHCI",
29 or "UHCI", and are usually integrated into southbridges on PC
32 Enable this configuration option if you want to run Linux inside
33 a USB peripheral device. Configure one hardware driver for your
34 peripheral/device side bus controller, and a "gadget driver" for
35 your peripheral protocol. (If you use modular gadget drivers,
36 you may configure more than one.)
38 If in doubt, say "N" and don't enable these drivers; most people
39 don't have this kind of hardware (except maybe inside Linux PDAs).
41 For more information, see <http://www.linux-usb.org/gadget> and
42 the kernel DocBook documentation for this API.
46 config USB_GADGET_DEBUG
47 boolean "Debugging messages (DEVELOPMENT)"
48 depends on DEBUG_KERNEL
50 Many controller and gadget drivers will print some debugging
51 messages if you use this option to ask for those messages.
53 Avoid enabling these messages, even if you're actively
54 debugging such a driver. Many drivers will emit so many
55 messages that the driver timings are affected, which will
56 either create new failure modes or remove the one you're
57 trying to track down. Never enable these messages for a
60 config USB_GADGET_DEBUG_FILES
61 boolean "Debugging information files (DEVELOPMENT)"
64 Some of the drivers in the "gadget" framework can expose
65 debugging information in files such as /proc/driver/udc
66 (for a peripheral controller). The information in these
67 files may help when you're troubleshooting or bringing up a
68 driver on a new board. Enable these files by choosing "Y"
69 here. If in doubt, or to conserve kernel memory, say "N".
71 config USB_GADGET_DEBUG_FS
72 boolean "Debugging information files in debugfs (DEVELOPMENT)"
75 Some of the drivers in the "gadget" framework can expose
76 debugging information in files under /sys/kernel/debug/.
77 The information in these files may help when you're
78 troubleshooting or bringing up a driver on a new board.
79 Enable these files by choosing "Y" here. If in doubt, or
80 to conserve kernel memory, say "N".
82 config USB_GADGET_VBUS_DRAW
83 int "Maximum VBUS Power usage (2-500 mA)"
87 Some devices need to draw power from USB when they are
88 configured, perhaps to operate circuitry or to recharge
89 batteries. This is in addition to any local power supply,
90 such as an AC adapter or batteries.
92 Enter the maximum power your device draws through USB, in
93 milliAmperes. The permitted range of values is 2 - 500 mA;
94 0 mA would be legal, but can make some hosts misbehave.
96 This value will be used except for system-specific gadget
97 drivers that have more specific information.
99 config USB_GADGET_SELECTED
103 # USB Peripheral Controller Support
105 # The order here is alphabetical, except that integrated controllers go
106 # before discrete ones so they will be the initial/default value:
107 # - integrated/SOC controllers first
108 # - licensed IP used in both SOC and discrete versions
109 # - discrete ones (including all PCI-only controllers)
110 # - debug/dummy gadget+hcd is last.
113 prompt "USB Peripheral Controller"
114 depends on USB_GADGET
116 A USB device uses a controller to talk to its host.
117 Systems should have only one such upstream link.
118 Many controller drivers are platform-specific; these
119 often need board-specific hooks.
122 # Integrated controllers
125 config USB_GADGET_AT91
126 boolean "Atmel AT91 USB Device Port"
127 depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9 && !ARCH_AT91SAM9G45
128 select USB_GADGET_SELECTED
130 Many Atmel AT91 processors (such as the AT91RM2000) have a
131 full speed USB Device Port with support for five configurable
132 endpoints (plus endpoint zero).
134 Say "y" to link the driver statically, or "m" to build a
135 dynamically linked module called "at91_udc" and force all
136 gadget drivers to also be dynamically linked.
140 depends on USB_GADGET_AT91
143 config USB_GADGET_ATMEL_USBA
145 select USB_GADGET_DUALSPEED
146 depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
148 USBA is the integrated high-speed USB Device controller on
149 the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
151 config USB_ATMEL_USBA
153 depends on USB_GADGET_ATMEL_USBA
155 select USB_GADGET_SELECTED
157 config USB_GADGET_FSL_USB2
158 boolean "Freescale Highspeed USB DR Peripheral Controller"
159 depends on FSL_SOC || ARCH_MXC
160 select USB_GADGET_DUALSPEED
161 select USB_FSL_MPH_DR_OF if OF
163 Some of Freescale PowerPC processors have a High Speed
164 Dual-Role(DR) USB controller, which supports device mode.
166 The number of programmable endpoints is different through
169 Say "y" to link the driver statically, or "m" to build a
170 dynamically linked module called "fsl_usb2_udc" and force
171 all gadget drivers to also be dynamically linked.
175 depends on USB_GADGET_FSL_USB2
177 select USB_GADGET_SELECTED
179 config USB_GADGET_OMAP
180 boolean "OMAP USB Device Controller"
182 select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
183 select USB_OTG_UTILS if ARCH_OMAP
185 Many Texas Instruments OMAP processors have flexible full
186 speed USB device controllers, with support for up to 30
187 endpoints (plus endpoint zero). This driver supports the
188 controller in the OMAP 1611, and should work with controllers
189 in other OMAP processors too, given minor tweaks.
191 Say "y" to link the driver statically, or "m" to build a
192 dynamically linked module called "omap_udc" and force all
193 gadget drivers to also be dynamically linked.
197 depends on USB_GADGET_OMAP
199 select USB_GADGET_SELECTED
201 config USB_GADGET_PXA25X
202 boolean "PXA 25x or IXP 4xx"
203 depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
206 Intel's PXA 25x series XScale ARM-5TE processors include
207 an integrated full speed USB 1.1 device controller. The
208 controller in the IXP 4xx series is register-compatible.
210 It has fifteen fixed-function endpoints, as well as endpoint
211 zero (for control transfers).
213 Say "y" to link the driver statically, or "m" to build a
214 dynamically linked module called "pxa25x_udc" and force all
215 gadget drivers to also be dynamically linked.
219 depends on USB_GADGET_PXA25X
221 select USB_GADGET_SELECTED
223 # if there's only one gadget driver, using only two bulk endpoints,
224 # don't waste memory for the other endpoints
225 config USB_PXA25X_SMALL
226 depends on USB_GADGET_PXA25X
228 default n if USB_ETH_RNDIS
229 default y if USB_ZERO
231 default y if USB_G_SERIAL
233 config USB_GADGET_R8A66597
234 boolean "Renesas R8A66597 USB Peripheral Controller"
235 select USB_GADGET_DUALSPEED
237 R8A66597 is a discrete USB host and peripheral controller chip that
238 supports both full and high speed USB 2.0 data transfers.
239 It has nine configurable endpoints, and endpoint zero.
241 Say "y" to link the driver statically, or "m" to build a
242 dynamically linked module called "r8a66597_udc" and force all
243 gadget drivers to also be dynamically linked.
247 depends on USB_GADGET_R8A66597
249 select USB_GADGET_SELECTED
251 config USB_GADGET_PXA27X
253 depends on ARCH_PXA && (PXA27x || PXA3xx)
256 Intel's PXA 27x series XScale ARM v5TE processors include
257 an integrated full speed USB 1.1 device controller.
259 It has up to 23 endpoints, as well as endpoint zero (for
262 Say "y" to link the driver statically, or "m" to build a
263 dynamically linked module called "pxa27x_udc" and force all
264 gadget drivers to also be dynamically linked.
268 depends on USB_GADGET_PXA27X
270 select USB_GADGET_SELECTED
272 config USB_GADGET_S3C_HSOTG
273 boolean "S3C HS/OtG USB Device controller"
274 depends on S3C_DEV_USB_HSOTG
275 select USB_GADGET_S3C_HSOTG_PIO
276 select USB_GADGET_DUALSPEED
278 The Samsung S3C64XX USB2.0 high-speed gadget controller
279 integrated into the S3C64XX series SoC.
283 depends on USB_GADGET_S3C_HSOTG
285 select USB_GADGET_SELECTED
287 config USB_GADGET_IMX
288 boolean "Freescale IMX USB Peripheral Controller"
291 Freescale's IMX series include an integrated full speed
292 USB 1.1 device controller. The controller in the IMX series
293 is register-compatible.
295 It has Six fixed-function endpoints, as well as endpoint
296 zero (for control transfers).
298 Say "y" to link the driver statically, or "m" to build a
299 dynamically linked module called "imx_udc" and force all
300 gadget drivers to also be dynamically linked.
304 depends on USB_GADGET_IMX
306 select USB_GADGET_SELECTED
308 config USB_GADGET_S3C2410
309 boolean "S3C2410 USB Device Controller"
310 depends on ARCH_S3C2410
312 Samsung's S3C2410 is an ARM-4 processor with an integrated
313 full speed USB 1.1 device controller. It has 4 configurable
314 endpoints, as well as endpoint zero (for control transfers).
316 This driver has been tested on the S3C2410, S3C2412, and
321 depends on USB_GADGET_S3C2410
323 select USB_GADGET_SELECTED
325 config USB_S3C2410_DEBUG
326 boolean "S3C2410 udc debug messages"
327 depends on USB_GADGET_S3C2410
329 config USB_GADGET_PXA_U2O
330 boolean "PXA9xx Processor USB2.0 controller"
331 select USB_GADGET_DUALSPEED
333 PXA9xx Processor series include a high speed USB2.0 device
334 controller, which support high speed and full speed USB peripheral.
338 depends on USB_GADGET_PXA_U2O
340 select USB_GADGET_SELECTED
343 # Controllers available in both integrated and discrete versions
346 # musb builds in ../musb along with host support
347 config USB_GADGET_MUSB_HDRC
348 boolean "Inventra HDRC USB Peripheral (TI, ADI, ...)"
349 depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
350 select USB_GADGET_DUALSPEED
351 select USB_GADGET_SELECTED
353 This OTG-capable silicon IP is used in dual designs including
354 the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
356 config USB_GADGET_M66592
357 boolean "Renesas M66592 USB Peripheral Controller"
358 select USB_GADGET_DUALSPEED
360 M66592 is a discrete USB peripheral controller chip that
361 supports both full and high speed USB 2.0 data transfers.
362 It has seven configurable endpoints, and endpoint zero.
364 Say "y" to link the driver statically, or "m" to build a
365 dynamically linked module called "m66592_udc" and force all
366 gadget drivers to also be dynamically linked.
370 depends on USB_GADGET_M66592
372 select USB_GADGET_SELECTED
375 # Controllers available only in discrete form (and all PCI controllers)
378 config USB_GADGET_AMD5536UDC
379 boolean "AMD5536 UDC"
381 select USB_GADGET_DUALSPEED
383 The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
384 It is a USB Highspeed DMA capable USB device controller. Beside ep0
385 it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
386 The UDC port supports OTG operation, and may be used as a host port
387 if it's not being used to implement peripheral or OTG roles.
389 Say "y" to link the driver statically, or "m" to build a
390 dynamically linked module called "amd5536udc" and force all
391 gadget drivers to also be dynamically linked.
393 config USB_AMD5536UDC
395 depends on USB_GADGET_AMD5536UDC
397 select USB_GADGET_SELECTED
399 config USB_GADGET_FSL_QE
400 boolean "Freescale QE/CPM USB Device Controller"
401 depends on FSL_SOC && (QUICC_ENGINE || CPM)
403 Some of Freescale PowerPC processors have a Full Speed
404 QE/CPM2 USB controller, which support device mode with 4
405 programmable endpoints. This driver supports the
406 controller in the MPC8360 and MPC8272, and should work with
407 controllers having QE or CPM2, given minor tweaks.
409 Set CONFIG_USB_GADGET to "m" to build this driver as a
410 dynamically linked module called "fsl_qe_udc".
414 depends on USB_GADGET_FSL_QE
416 select USB_GADGET_SELECTED
418 config USB_GADGET_CI13XXX_PCI
419 boolean "MIPS USB CI13xxx PCI UDC"
421 select USB_GADGET_DUALSPEED
423 MIPS USB IP core family device controller
424 Currently it only supports IP part number CI13412
426 Say "y" to link the driver statically, or "m" to build a
427 dynamically linked module called "ci13xxx_udc" and force all
428 gadget drivers to also be dynamically linked.
430 config USB_CI13XXX_PCI
432 depends on USB_GADGET_CI13XXX_PCI
434 select USB_GADGET_SELECTED
436 config USB_GADGET_NET2280
437 boolean "NetChip 228x"
439 select USB_GADGET_DUALSPEED
441 NetChip 2280 / 2282 is a PCI based USB peripheral controller which
442 supports both full and high speed USB 2.0 data transfers.
444 It has six configurable endpoints, as well as endpoint zero
445 (for control transfers) and several endpoints with dedicated
448 Say "y" to link the driver statically, or "m" to build a
449 dynamically linked module called "net2280" and force all
450 gadget drivers to also be dynamically linked.
454 depends on USB_GADGET_NET2280
456 select USB_GADGET_SELECTED
458 config USB_GADGET_GOKU
459 boolean "Toshiba TC86C001 'Goku-S'"
462 The Toshiba TC86C001 is a PCI device which includes controllers
463 for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
465 The device controller has three configurable (bulk or interrupt)
466 endpoints, plus endpoint zero (for control transfers).
468 Say "y" to link the driver statically, or "m" to build a
469 dynamically linked module called "goku_udc" and to force all
470 gadget drivers to also be dynamically linked.
474 depends on USB_GADGET_GOKU
476 select USB_GADGET_SELECTED
478 config USB_GADGET_LANGWELL
479 boolean "Intel Langwell USB Device Controller"
481 select USB_GADGET_DUALSPEED
483 Intel Langwell USB Device Controller is a High-Speed USB
484 On-The-Go device controller.
486 The number of programmable endpoints is different through
489 Say "y" to link the driver statically, or "m" to build a
490 dynamically linked module called "langwell_udc" and force all
491 gadget drivers to also be dynamically linked.
495 depends on USB_GADGET_LANGWELL
497 select USB_GADGET_SELECTED
499 config USB_GADGET_EG20T
500 boolean "Intel EG20T(Topcliff) USB Device controller"
502 select USB_GADGET_DUALSPEED
504 This is a USB device driver for EG20T PCH.
505 EG20T PCH is the platform controller hub that is used in Intel's
506 general embedded platform. EG20T PCH has USB device interface.
507 Using this interface, it is able to access system devices connected
509 This driver enables USB device function.
510 USB device is a USB peripheral controller which
511 supports both full and high speed USB 2.0 data transfers.
512 This driver supports both control transfer and bulk transfer modes.
513 This driver dose not support interrupt transfer or isochronous
518 depends on USB_GADGET_EG20T
520 select USB_GADGET_SELECTED
522 config USB_GADGET_CI13XXX_MSM
523 boolean "MIPS USB CI13xxx for MSM"
525 select USB_GADGET_DUALSPEED
526 select USB_MSM_OTG_72K
528 MSM SoC has chipidea USB controller. This driver uses
530 This driver depends on OTG driver for PHY initialization,
531 clock management, powering up VBUS, and power management.
533 Say "y" to link the driver statically, or "m" to build a
534 dynamically linked module called "ci13xxx_msm" and force all
535 gadget drivers to also be dynamically linked.
537 config USB_CI13XXX_MSM
539 depends on USB_GADGET_CI13XXX_MSM
541 select USB_GADGET_SELECTED
544 # LAST -- dummy/emulated controller
547 config USB_GADGET_DUMMY_HCD
548 boolean "Dummy HCD (DEVELOPMENT)"
549 depends on USB=y || (USB=m && USB_GADGET=m)
550 select USB_GADGET_DUALSPEED
552 This host controller driver emulates USB, looping all data transfer
553 requests back to a USB "gadget driver" in the same host. The host
554 side is the master; the gadget side is the slave. Gadget drivers
555 can be high, full, or low speed; and they have access to endpoints
556 like those from NET2280, PXA2xx, or SA1100 hardware.
558 This may help in some stages of creating a driver to embed in a
559 Linux device, since it lets you debug several parts of the gadget
560 driver without its hardware or drivers being involved.
562 Since such a gadget side driver needs to interoperate with a host
563 side Linux-USB device driver, this may help to debug both sides
564 of a USB protocol stack.
566 Say "y" to link the driver statically, or "m" to build a
567 dynamically linked module called "dummy_hcd" and force all
568 gadget drivers to also be dynamically linked.
572 depends on USB_GADGET_DUMMY_HCD
574 select USB_GADGET_SELECTED
576 # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
577 # first and will be selected by default.
581 config USB_GADGET_DUALSPEED
583 depends on USB_GADGET
586 Means that gadget drivers should include extra descriptors
587 and code to handle dual-speed controllers.
593 tristate "USB Gadget Drivers"
594 depends on USB_GADGET && USB_GADGET_SELECTED
597 A Linux "Gadget Driver" talks to the USB Peripheral Controller
598 driver through the abstract "gadget" API. Some other operating
599 systems call these "client" drivers, of which "class drivers"
600 are a subset (implementing a USB device class specification).
601 A gadget driver implements one or more USB functions using
602 the peripheral hardware.
604 Gadget drivers are hardware-neutral, or "platform independent",
605 except that they sometimes must understand quirks or limitations
606 of the particular controllers they work with. For example, when
607 a controller doesn't support alternate configurations or provide
608 enough of the right types of endpoints, the gadget driver might
609 not be able work with that controller, or might need to implement
610 a less common variant of a device class protocol.
612 # this first set of drivers all depend on bulk-capable hardware.
615 tristate "Gadget Zero (DEVELOPMENT)"
617 Gadget Zero is a two-configuration device. It either sinks and
618 sources bulk data; or it loops back a configurable number of
619 transfers. It also implements control requests, for "chapter 9"
620 conformance. The driver needs only two bulk-capable endpoints, so
621 it can work on top of most device-side usb controllers. It's
622 useful for testing, and is also a working example showing how
623 USB "gadget drivers" can be written.
625 Make this be the first driver you try using on top of any new
626 USB peripheral controller driver. Then you can use host-side
627 test software, like the "usbtest" driver, to put your hardware
628 and its driver through a basic set of functional tests.
630 Gadget Zero also works with the host-side "usb-skeleton" driver,
631 and with many kinds of host-side test software. You may need
632 to tweak product and vendor IDs before host software knows about
633 this device, and arrange to select an appropriate configuration.
635 Say "y" to link the driver statically, or "m" to build a
636 dynamically linked module called "g_zero".
638 config USB_ZERO_HNPTEST
639 boolean "HNP Test Device"
640 depends on USB_ZERO && USB_OTG
642 You can configure this device to enumerate using the device
643 identifiers of the USB-OTG test device. That means that when
644 this gadget connects to another OTG device, with this one using
645 the "B-Peripheral" role, that device will use HNP to let this
646 one serve as the USB host instead (in the "B-Host" role).
649 tristate "Audio Gadget (EXPERIMENTAL)"
653 Gadget Audio is compatible with USB Audio Class specification 1.0.
654 It will include at least one AudioControl interface, zero or more
655 AudioStream interface and zero or more MIDIStream interface.
657 Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to
658 playback or capture audio stream.
660 Say "y" to link the driver statically, or "m" to build a
661 dynamically linked module called "g_audio".
664 tristate "Ethernet Gadget (with CDC Ethernet support)"
668 This driver implements Ethernet style communication, in one of
671 - The "Communication Device Class" (CDC) Ethernet Control Model.
672 That protocol is often avoided with pure Ethernet adapters, in
673 favor of simpler vendor-specific hardware, but is widely
674 supported by firmware for smart network devices.
676 - On hardware can't implement that protocol, a simple CDC subset
677 is used, placing fewer demands on USB.
679 - CDC Ethernet Emulation Model (EEM) is a newer standard that has
680 a simpler interface that can be used by more USB hardware.
682 RNDIS support is an additional option, more demanding than than
685 Within the USB device, this gadget driver exposes a network device
686 "usbX", where X depends on what other networking devices you have.
687 Treat it like a two-node Ethernet link: host, and gadget.
689 The Linux-USB host-side "usbnet" driver interoperates with this
690 driver, so that deep I/O queues can be supported. On 2.4 kernels,
691 use "CDCEther" instead, if you're using the CDC option. That CDC
692 mode should also interoperate with standard CDC Ethernet class
693 drivers on other host operating systems.
695 Say "y" to link the driver statically, or "m" to build a
696 dynamically linked module called "g_ether".
703 Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
704 and Microsoft provides redistributable binary RNDIS drivers for
705 older versions of Windows.
707 If you say "y" here, the Ethernet gadget driver will try to provide
708 a second device configuration, supporting RNDIS to talk to such
711 To make MS-Windows work with this, use Documentation/usb/linux.inf
712 as the "driver info file". For versions of MS-Windows older than
713 XP, you'll need to download drivers from Microsoft's website; a URL
714 is given in comments found in that info file.
717 bool "Ethernet Emulation Model (EEM) support"
721 CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
722 and therefore can be supported by more hardware. Technically ECM and
723 EEM are designed for different applications. The ECM model extends
724 the network interface to the target (e.g. a USB cable modem), and the
725 EEM model is for mobile devices to communicate with hosts using
726 ethernet over USB. For Linux gadgets, however, the interface with
727 the host is the same (a usbX device), so the differences are minimal.
729 If you say "y" here, the Ethernet gadget driver will use the EEM
730 protocol rather than ECM. If unsure, say "n".
733 tristate "Network Control Model (NCM) support"
737 This driver implements USB CDC NCM subclass standard. NCM is
738 an advanced protocol for Ethernet encapsulation, allows grouping
739 of several ethernet frames into one USB transfer and diffferent
740 alignment possibilities.
742 Say "y" to link the driver statically, or "m" to build a
743 dynamically linked module called "g_ncm".
746 tristate "Gadget Filesystem (EXPERIMENTAL)"
747 depends on EXPERIMENTAL
749 This driver provides a filesystem based API that lets user mode
750 programs implement a single-configuration USB device, including
751 endpoint I/O and control requests that don't relate to enumeration.
752 All endpoints, transfer speeds, and transfer types supported by
753 the hardware are available, through read() and write() calls.
755 Currently, this option is still labelled as EXPERIMENTAL because
756 of existing race conditions in the underlying in-kernel AIO core.
758 Say "y" to link the driver statically, or "m" to build a
759 dynamically linked module called "gadgetfs".
761 config USB_FUNCTIONFS
762 tristate "Function Filesystem (EXPERIMENTAL)"
763 depends on EXPERIMENTAL
764 select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
766 The Function Filesystem (FunctionFS) lets one create USB
767 composite functions in user space in the same way GadgetFS
768 lets one create USB gadgets in user space. This allows creation
769 of composite gadgets such that some of the functions are
770 implemented in kernel space (for instance Ethernet, serial or
771 mass storage) and other are implemented in user space.
773 If you say "y" or "m" here you will be able what kind of
774 configurations the gadget will provide.
776 Say "y" to link the driver statically, or "m" to build
777 a dynamically linked module called "g_ffs".
779 config USB_FUNCTIONFS_ETH
780 bool "Include configuration with CDC ECM (Ethernet)"
781 depends on USB_FUNCTIONFS && NET
783 Include a configuration with CDC ECM function (Ethernet) and the
786 config USB_FUNCTIONFS_RNDIS
787 bool "Include configuration with RNDIS (Ethernet)"
788 depends on USB_FUNCTIONFS && NET
790 Include a configuration with RNDIS function (Ethernet) and the Filesystem.
792 config USB_FUNCTIONFS_GENERIC
793 bool "Include 'pure' configuration"
794 depends on USB_FUNCTIONFS
796 Include a configuration with the Function Filesystem alone with
797 no Ethernet interface.
799 config USB_FILE_STORAGE
800 tristate "File-backed Storage Gadget"
803 The File-backed Storage Gadget acts as a USB Mass Storage
804 disk drive. As its storage repository it can use a regular
805 file or a block device (in much the same way as the "loop"
806 device driver), specified as a module parameter.
808 Say "y" to link the driver statically, or "m" to build a
809 dynamically linked module called "g_file_storage".
811 config USB_FILE_STORAGE_TEST
812 bool "File-backed Storage Gadget testing version"
813 depends on USB_FILE_STORAGE
816 Say "y" to generate the larger testing version of the
817 File-backed Storage Gadget, useful for probing the
818 behavior of USB Mass Storage hosts. Not needed for
821 config USB_MASS_STORAGE
822 tristate "Mass Storage Gadget"
825 The Mass Storage Gadget acts as a USB Mass Storage disk drive.
826 As its storage repository it can use a regular file or a block
827 device (in much the same way as the "loop" device driver),
828 specified as a module parameter or sysfs option.
830 This is heavily based on File-backed Storage Gadget and in most
831 cases you will want to use FSG instead. This gadget is mostly
832 here to test the functionality of the Mass Storage Function
833 which may be used with composite framework.
835 Say "y" to link the driver statically, or "m" to build
836 a dynamically linked module called "g_mass_storage". If unsure,
837 consider File-backed Storage Gadget.
840 tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
842 The Serial Gadget talks to the Linux-USB generic serial driver.
843 This driver supports a CDC-ACM module option, which can be used
844 to interoperate with MS-Windows hosts or with the Linux-USB
847 This driver also supports a CDC-OBEX option. You will need a
848 user space OBEX server talking to /dev/ttyGS*, since the kernel
849 itself doesn't implement the OBEX protocol.
851 Say "y" to link the driver statically, or "m" to build a
852 dynamically linked module called "g_serial".
854 For more information, see Documentation/usb/gadget_serial.txt
855 which includes instructions and a "driver info file" needed to
856 make MS-Windows work with CDC ACM.
858 config USB_MIDI_GADGET
859 tristate "MIDI Gadget (EXPERIMENTAL)"
860 depends on SND && EXPERIMENTAL
863 The MIDI Gadget acts as a USB Audio device, with one MIDI
864 input and one MIDI output. These MIDI jacks appear as
865 a sound "card" in the ALSA sound system. Other MIDI
866 connections can then be made on the gadget system, using
867 ALSA's aconnect utility etc.
869 Say "y" to link the driver statically, or "m" to build a
870 dynamically linked module called "g_midi".
873 tristate "Printer Gadget"
875 The Printer Gadget channels data between the USB host and a
876 userspace program driving the print engine. The user space
877 program reads and writes the device file /dev/g_printer to
878 receive or send printer data. It can use ioctl calls to
879 the device file to get or set printer status.
881 Say "y" to link the driver statically, or "m" to build a
882 dynamically linked module called "g_printer".
884 For more information, see Documentation/usb/gadget_printer.txt
885 which includes sample code for accessing the device file.
887 config USB_CDC_COMPOSITE
888 tristate "CDC Composite Device (Ethernet and ACM)"
891 This driver provides two functions in one configuration:
892 a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link.
894 This driver requires four bulk and two interrupt endpoints,
895 plus the ability to handle altsettings. Not all peripheral
896 controllers are that capable.
898 Say "y" to link the driver statically, or "m" to build a
899 dynamically linked module.
902 tristate "Nokia composite gadget"
905 The Nokia composite gadget provides support for acm, obex
906 and phonet in only one composite gadget driver.
908 It's only really useful for N900 hardware. If you're building
909 a kernel for N900, say Y or M here. If unsure, say N.
912 tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
913 depends on BLOCK && NET
914 select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
916 The Multifunction Composite Gadget provides Ethernet (RNDIS
917 and/or CDC Ethernet), mass storage and ACM serial link
920 You will be asked to choose which of the two configurations is
921 to be available in the gadget. At least one configuration must
922 be chosen to make the gadget usable. Selecting more than one
923 configuration will prevent Windows from automatically detecting
924 the gadget as a composite gadget, so an INF file will be needed to
927 Say "y" to link the driver statically, or "m" to build a
928 dynamically linked module called "g_multi".
930 config USB_G_MULTI_RNDIS
931 bool "RNDIS + CDC Serial + Storage configuration"
932 depends on USB_G_MULTI
935 This option enables a configuration with RNDIS, CDC Serial and
936 Mass Storage functions available in the Multifunction Composite
937 Gadget. This is the configuration dedicated for Windows since RNDIS
938 is Microsoft's protocol.
942 config USB_G_MULTI_CDC
943 bool "CDC Ethernet + CDC Serial + Storage configuration"
944 depends on USB_G_MULTI
947 This option enables a configuration with CDC Ethernet (ECM), CDC
948 Serial and Mass Storage functions available in the Multifunction
954 tristate "HID Gadget"
956 The HID gadget driver provides generic emulation of USB
957 Human Interface Devices (HID).
959 For more information, see Documentation/usb/gadget_hid.txt which
960 includes sample code for accessing the device files.
962 Say "y" to link the driver statically, or "m" to build a
963 dynamically linked module called "g_hid".
966 tristate "EHCI Debug Device Gadget"
968 This gadget emulates an EHCI Debug device. This is useful when you want
969 to interact with an EHCI Debug Port.
971 Say "y" to link the driver statically, or "m" to build a
972 dynamically linked module called "g_dbgp".
976 prompt "EHCI Debug Device mode"
977 default USB_G_DBGP_SERIAL
979 config USB_G_DBGP_PRINTK
980 depends on USB_G_DBGP
983 Directly printk() received data. No interaction.
985 config USB_G_DBGP_SERIAL
986 depends on USB_G_DBGP
989 Userland can interact using /dev/ttyGSxxx.
993 # put drivers that need isochronous transfer support (for audio
994 # or video class gadget drivers), or specific hardware, here.
996 tristate "USB Webcam Gadget"
999 The Webcam Gadget acts as a composite USB Audio and Video Class
1000 device. It provides a userspace API to process UVC control requests
1001 and stream video data to the host.
1003 Say "y" to link the driver statically, or "m" to build a
1004 dynamically linked module called "g_webcam".