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"
20 USB is a master/slave protocol, organized with one master
21 host (such as a PC) controlling up to 127 peripheral devices.
22 The USB hardware is asymmetric, which makes it easier to set up:
23 you can't connect a "to-the-host" connector to a peripheral.
25 Linux can run in the host, or in the peripheral. In both cases
26 you need a low level bus controller driver, and some software
27 talking to it. Peripheral controllers are often discrete silicon,
28 or are integrated with the CPU in a microcontroller. The more
29 familiar host side controllers have names like "EHCI", "OHCI",
30 or "UHCI", and are usually integrated into southbridges on PC
33 Enable this configuration option if you want to run Linux inside
34 a USB peripheral device. Configure one hardware driver for your
35 peripheral/device side bus controller, and a "gadget driver" for
36 your peripheral protocol. (If you use modular gadget drivers,
37 you may configure more than one.)
39 If in doubt, say "N" and don't enable these drivers; most people
40 don't have this kind of hardware (except maybe inside Linux PDAs).
42 For more information, see <http://www.linux-usb.org/gadget> and
43 the kernel DocBook documentation for this API.
47 config USB_GADGET_DEBUG
48 boolean "Debugging messages (DEVELOPMENT)"
49 depends on DEBUG_KERNEL
51 Many controller and gadget drivers will print some debugging
52 messages if you use this option to ask for those messages.
54 Avoid enabling these messages, even if you're actively
55 debugging such a driver. Many drivers will emit so many
56 messages that the driver timings are affected, which will
57 either create new failure modes or remove the one you're
58 trying to track down. Never enable these messages for a
61 config USB_GADGET_DEBUG_FILES
62 boolean "Debugging information files (DEVELOPMENT)"
65 Some of the drivers in the "gadget" framework can expose
66 debugging information in files such as /proc/driver/udc
67 (for a peripheral controller). The information in these
68 files may help when you're troubleshooting or bringing up a
69 driver on a new board. Enable these files by choosing "Y"
70 here. If in doubt, or to conserve kernel memory, say "N".
72 config USB_GADGET_DEBUG_FS
73 boolean "Debugging information files in debugfs (DEVELOPMENT)"
76 Some of the drivers in the "gadget" framework can expose
77 debugging information in files under /sys/kernel/debug/.
78 The information in these files may help when you're
79 troubleshooting or bringing up a driver on a new board.
80 Enable these files by choosing "Y" here. If in doubt, or
81 to conserve kernel memory, say "N".
83 config USB_GADGET_VBUS_DRAW
84 int "Maximum VBUS Power usage (2-500 mA)"
88 Some devices need to draw power from USB when they are
89 configured, perhaps to operate circuitry or to recharge
90 batteries. This is in addition to any local power supply,
91 such as an AC adapter or batteries.
93 Enter the maximum power your device draws through USB, in
94 milliAmperes. The permitted range of values is 2 - 500 mA;
95 0 mA would be legal, but can make some hosts misbehave.
97 This value will be used except for system-specific gadget
98 drivers that have more specific information.
100 config USB_GADGET_STORAGE_NUM_BUFFERS
101 int "Number of storage pipeline buffers"
105 Usually 2 buffers are enough to establish a good buffering
106 pipeline. The number may be increased in order to compensate
107 for a bursty VFS behaviour. For instance there may be CPU wake up
108 latencies that makes the VFS to appear bursty in a system with
109 an CPU on-demand governor. Especially if DMA is doing IO to
110 offload the CPU. In this case the CPU will go into power
111 save often and spin up occasionally to move data within VFS.
112 If selecting USB_GADGET_DEBUG_FILES this value may be set by
113 a module parameter as well.
117 # USB Peripheral Controller Support
119 # The order here is alphabetical, except that integrated controllers go
120 # before discrete ones so they will be the initial/default value:
121 # - integrated/SOC controllers first
122 # - licensed IP used in both SOC and discrete versions
123 # - discrete ones (including all PCI-only controllers)
124 # - debug/dummy gadget+hcd is last.
126 menu "USB Peripheral Controller"
129 # Integrated controllers
133 tristate "Atmel AT91 USB Device Port"
136 Many Atmel AT91 processors (such as the AT91RM2000) have a
137 full speed USB Device Port with support for five configurable
138 endpoints (plus endpoint zero).
140 Say "y" to link the driver statically, or "m" to build a
141 dynamically linked module called "at91_udc" and force all
142 gadget drivers to also be dynamically linked.
145 tristate "LPC32XX USB Peripheral Controller"
146 depends on ARCH_LPC32XX
149 This option selects the USB device controller in the LPC32xx SoC.
151 Say "y" to link the driver statically, or "m" to build a
152 dynamically linked module called "lpc32xx_udc" and force all
153 gadget drivers to also be dynamically linked.
155 config USB_ATMEL_USBA
156 tristate "Atmel USBA"
157 depends on AVR32 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
159 USBA is the integrated high-speed USB Device controller on
160 the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
162 config USB_BCM63XX_UDC
163 tristate "Broadcom BCM63xx Peripheral Controller"
166 Many Broadcom BCM63xx chipsets (such as the BCM6328) have a
167 high speed USB Device Port with support for four fixed endpoints
168 (plus endpoint zero).
170 Say "y" to link the driver statically, or "m" to build a
171 dynamically linked module called "bcm63xx_udc".
174 tristate "Freescale Highspeed USB DR Peripheral Controller"
175 depends on FSL_SOC || ARCH_MXC
176 select USB_FSL_MPH_DR_OF if OF
178 Some of Freescale PowerPC and i.MX processors have a High Speed
179 Dual-Role(DR) USB controller, which supports device mode.
181 The number of programmable endpoints is different through
184 Say "y" to link the driver statically, or "m" to build a
185 dynamically linked module called "fsl_usb2_udc" and force
186 all gadget drivers to also be dynamically linked.
189 tristate "Faraday FUSB300 USB Peripheral Controller"
190 depends on !PHYS_ADDR_T_64BIT
192 Faraday usb device controller FUSB300 driver
195 tristate "OMAP USB Device Controller"
196 depends on ARCH_OMAP1
197 select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
198 select USB_OTG_UTILS if ARCH_OMAP
200 Many Texas Instruments OMAP processors have flexible full
201 speed USB device controllers, with support for up to 30
202 endpoints (plus endpoint zero). This driver supports the
203 controller in the OMAP 1611, and should work with controllers
204 in other OMAP processors too, given minor tweaks.
206 Say "y" to link the driver statically, or "m" to build a
207 dynamically linked module called "omap_udc" and force all
208 gadget drivers to also be dynamically linked.
211 tristate "PXA 25x or IXP 4xx"
212 depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
215 Intel's PXA 25x series XScale ARM-5TE processors include
216 an integrated full speed USB 1.1 device controller. The
217 controller in the IXP 4xx series is register-compatible.
219 It has fifteen fixed-function endpoints, as well as endpoint
220 zero (for control transfers).
222 Say "y" to link the driver statically, or "m" to build a
223 dynamically linked module called "pxa25x_udc" and force all
224 gadget drivers to also be dynamically linked.
226 # if there's only one gadget driver, using only two bulk endpoints,
227 # don't waste memory for the other endpoints
228 config USB_PXA25X_SMALL
229 depends on USB_PXA25X
231 default n if USB_ETH_RNDIS
232 default y if USB_ZERO
234 default y if USB_G_SERIAL
237 tristate "Renesas R8A66597 USB Peripheral Controller"
239 R8A66597 is a discrete USB host and peripheral controller chip that
240 supports both full and high speed USB 2.0 data transfers.
241 It has nine configurable endpoints, and endpoint zero.
243 Say "y" to link the driver statically, or "m" to build a
244 dynamically linked module called "r8a66597_udc" and force all
245 gadget drivers to also be dynamically linked.
247 config USB_RENESAS_USBHS_UDC
248 tristate 'Renesas USBHS controller'
249 depends on USB_RENESAS_USBHS
251 Renesas USBHS is a discrete USB host and peripheral controller chip
252 that supports both full and high speed USB 2.0 data transfers.
253 It has nine or more configurable endpoints, and endpoint zero.
255 Say "y" to link the driver statically, or "m" to build a
256 dynamically linked module called "renesas_usbhs" and force all
257 gadget drivers to also be dynamically linked.
261 depends on ARCH_PXA && (PXA27x || PXA3xx)
264 Intel's PXA 27x series XScale ARM v5TE processors include
265 an integrated full speed USB 1.1 device controller.
267 It has up to 23 endpoints, as well as endpoint zero (for
270 Say "y" to link the driver statically, or "m" to build a
271 dynamically linked module called "pxa27x_udc" and force all
272 gadget drivers to also be dynamically linked.
275 tristate "S3C HS/OtG USB Device controller"
276 depends on S3C_DEV_USB_HSOTG
278 The Samsung S3C64XX USB2.0 high-speed gadget controller
279 integrated into the S3C64XX series SoC.
282 tristate "Freescale i.MX1 USB Peripheral Controller"
285 Freescale's i.MX1 includes an integrated full speed
286 USB 1.1 device controller.
288 It has Six fixed-function endpoints, as well as endpoint
289 zero (for control transfers).
291 Say "y" to link the driver statically, or "m" to build a
292 dynamically linked module called "imx_udc" and force all
293 gadget drivers to also be dynamically linked.
296 tristate "S3C2410 USB Device Controller"
297 depends on ARCH_S3C24XX
299 Samsung's S3C2410 is an ARM-4 processor with an integrated
300 full speed USB 1.1 device controller. It has 4 configurable
301 endpoints, as well as endpoint zero (for control transfers).
303 This driver has been tested on the S3C2410, S3C2412, and
306 config USB_S3C2410_DEBUG
307 boolean "S3C2410 udc debug messages"
308 depends on USB_S3C2410
311 tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
312 depends on ARCH_S3C24XX
314 Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
315 integrated with dual speed USB 2.0 device controller. It has
316 8 endpoints, as well as endpoint zero.
318 This driver has been tested on S3C2416 and S3C2450 processors.
321 tristate "Marvell USB2.0 Device Controller"
323 Marvell Socs (including PXA and MMP series) include a high speed
324 USB2.0 OTG controller, which can be configured as high speed or
325 full speed USB peripheral.
328 tristate "MARVELL PXA2128 USB 3.0 controller"
330 select USB_GADGET_DUALSPEED
331 select USB_GADGET_SUPERSPEED
333 MARVELL PXA2128 Processor series include a super speed USB3.0 device
334 controller, which support super speed USB peripheral.
337 # Controllers available in both integrated and discrete versions
340 # musb builds in ../musb along with host support
341 config USB_GADGET_MUSB_HDRC
342 tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)"
343 depends on USB_MUSB_HDRC
345 This OTG-capable silicon IP is used in dual designs including
346 the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
349 tristate "Renesas M66592 USB Peripheral Controller"
351 M66592 is a discrete USB peripheral controller chip that
352 supports both full and high speed USB 2.0 data transfers.
353 It has seven configurable endpoints, and endpoint zero.
355 Say "y" to link the driver statically, or "m" to build a
356 dynamically linked module called "m66592_udc" and force all
357 gadget drivers to also be dynamically linked.
360 # Controllers available only in discrete form (and all PCI controllers)
363 config USB_AMD5536UDC
364 tristate "AMD5536 UDC"
367 The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
368 It is a USB Highspeed DMA capable USB device controller. Beside ep0
369 it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
370 The UDC port supports OTG operation, and may be used as a host port
371 if it's not being used to implement peripheral or OTG roles.
373 Say "y" to link the driver statically, or "m" to build a
374 dynamically linked module called "amd5536udc" and force all
375 gadget drivers to also be dynamically linked.
378 tristate "Freescale QE/CPM USB Device Controller"
379 depends on FSL_SOC && (QUICC_ENGINE || CPM)
381 Some of Freescale PowerPC processors have a Full Speed
382 QE/CPM2 USB controller, which support device mode with 4
383 programmable endpoints. This driver supports the
384 controller in the MPC8360 and MPC8272, and should work with
385 controllers having QE or CPM2, given minor tweaks.
387 Set CONFIG_USB_GADGET to "m" to build this driver as a
388 dynamically linked module called "fsl_qe_udc".
391 tristate "PLX NET2272"
393 PLX NET2272 is a USB peripheral controller which supports
394 both full and high speed USB 2.0 data transfers.
396 It has three configurable endpoints, as well as endpoint zero
397 (for control transfer).
398 Say "y" to link the driver statically, or "m" to build a
399 dynamically linked module called "net2272" and force all
400 gadget drivers to also be dynamically linked.
402 config USB_NET2272_DMA
403 boolean "Support external DMA controller"
404 depends on USB_NET2272
406 The NET2272 part can optionally support an external DMA
407 controller, but your board has to have support in the
410 If unsure, say "N" here. The driver works fine in PIO mode.
413 tristate "NetChip 228x"
416 NetChip 2280 / 2282 is a PCI based USB peripheral controller which
417 supports both full and high speed USB 2.0 data transfers.
419 It has six configurable endpoints, as well as endpoint zero
420 (for control transfers) and several endpoints with dedicated
423 Say "y" to link the driver statically, or "m" to build a
424 dynamically linked module called "net2280" and force all
425 gadget drivers to also be dynamically linked.
428 tristate "Toshiba TC86C001 'Goku-S'"
431 The Toshiba TC86C001 is a PCI device which includes controllers
432 for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
434 The device controller has three configurable (bulk or interrupt)
435 endpoints, plus endpoint zero (for control transfers).
437 Say "y" to link the driver statically, or "m" to build a
438 dynamically linked module called "goku_udc" and to force all
439 gadget drivers to also be dynamically linked.
442 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC"
445 This is a USB device driver for EG20T PCH.
446 EG20T PCH is the platform controller hub that is used in Intel's
447 general embedded platform. EG20T PCH has USB device interface.
448 Using this interface, it is able to access system devices connected
450 This driver enables USB device function.
451 USB device is a USB peripheral controller which
452 supports both full and high speed USB 2.0 data transfers.
453 This driver supports both control transfer and bulk transfer modes.
454 This driver dose not support interrupt transfer or isochronous
457 This driver also can be used for LAPIS Semiconductor's ML7213 which is
458 for IVI(In-Vehicle Infotainment) use.
459 ML7831 is for general purpose use.
460 ML7213/ML7831 is companion chip for Intel Atom E6xx series.
461 ML7213/ML7831 is completely compatible for Intel EG20T PCH.
464 # LAST -- dummy/emulated controller
468 tristate "Dummy HCD (DEVELOPMENT)"
469 depends on USB=y || (USB=m && USB_GADGET=m)
471 This host controller driver emulates USB, looping all data transfer
472 requests back to a USB "gadget driver" in the same host. The host
473 side is the master; the gadget side is the slave. Gadget drivers
474 can be high, full, or low speed; and they have access to endpoints
475 like those from NET2280, PXA2xx, or SA1100 hardware.
477 This may help in some stages of creating a driver to embed in a
478 Linux device, since it lets you debug several parts of the gadget
479 driver without its hardware or drivers being involved.
481 Since such a gadget side driver needs to interoperate with a host
482 side Linux-USB device driver, this may help to debug both sides
483 of a USB protocol stack.
485 Say "y" to link the driver statically, or "m" to build a
486 dynamically linked module called "dummy_hcd" and force all
487 gadget drivers to also be dynamically linked.
489 # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
490 # first and will be selected by default.
498 # composite based drivers
499 config USB_LIBCOMPOSITE
501 depends on USB_GADGET
504 tristate "USB Gadget Drivers"
507 A Linux "Gadget Driver" talks to the USB Peripheral Controller
508 driver through the abstract "gadget" API. Some other operating
509 systems call these "client" drivers, of which "class drivers"
510 are a subset (implementing a USB device class specification).
511 A gadget driver implements one or more USB functions using
512 the peripheral hardware.
514 Gadget drivers are hardware-neutral, or "platform independent",
515 except that they sometimes must understand quirks or limitations
516 of the particular controllers they work with. For example, when
517 a controller doesn't support alternate configurations or provide
518 enough of the right types of endpoints, the gadget driver might
519 not be able work with that controller, or might need to implement
520 a less common variant of a device class protocol.
522 # this first set of drivers all depend on bulk-capable hardware.
525 tristate "Gadget Zero (DEVELOPMENT)"
526 select USB_LIBCOMPOSITE
528 Gadget Zero is a two-configuration device. It either sinks and
529 sources bulk data; or it loops back a configurable number of
530 transfers. It also implements control requests, for "chapter 9"
531 conformance. The driver needs only two bulk-capable endpoints, so
532 it can work on top of most device-side usb controllers. It's
533 useful for testing, and is also a working example showing how
534 USB "gadget drivers" can be written.
536 Make this be the first driver you try using on top of any new
537 USB peripheral controller driver. Then you can use host-side
538 test software, like the "usbtest" driver, to put your hardware
539 and its driver through a basic set of functional tests.
541 Gadget Zero also works with the host-side "usb-skeleton" driver,
542 and with many kinds of host-side test software. You may need
543 to tweak product and vendor IDs before host software knows about
544 this device, and arrange to select an appropriate configuration.
546 Say "y" to link the driver statically, or "m" to build a
547 dynamically linked module called "g_zero".
549 config USB_ZERO_HNPTEST
550 boolean "HNP Test Device"
551 depends on USB_ZERO && USB_OTG
553 You can configure this device to enumerate using the device
554 identifiers of the USB-OTG test device. That means that when
555 this gadget connects to another OTG device, with this one using
556 the "B-Peripheral" role, that device will use HNP to let this
557 one serve as the USB host instead (in the "B-Host" role).
560 tristate "Audio Gadget"
562 select USB_LIBCOMPOSITE
565 This Gadget Audio driver is compatible with USB Audio Class
566 specification 2.0. It implements 1 AudioControl interface,
567 1 AudioStreaming Interface each for USB-OUT and USB-IN.
568 Number of channels, sample rate and sample size can be
569 specified as module parameters.
570 This driver doesn't expect any real Audio codec to be present
571 on the device - the audio streams are simply sinked to and
572 sourced from a virtual ALSA sound card created. The user-space
573 application may choose to do whatever it wants with the data
574 received from the USB Host and choose to provide whatever it
575 wants as audio data to the USB Host.
577 Say "y" to link the driver statically, or "m" to build a
578 dynamically linked module called "g_audio".
581 bool "UAC 1.0 (Legacy)"
584 If you instead want older UAC Spec-1.0 driver that also has audio
585 paths hardwired to the Audio codec chip on-board and doesn't work
589 tristate "Ethernet Gadget (with CDC Ethernet support)"
591 select USB_LIBCOMPOSITE
594 This driver implements Ethernet style communication, in one of
597 - The "Communication Device Class" (CDC) Ethernet Control Model.
598 That protocol is often avoided with pure Ethernet adapters, in
599 favor of simpler vendor-specific hardware, but is widely
600 supported by firmware for smart network devices.
602 - On hardware can't implement that protocol, a simple CDC subset
603 is used, placing fewer demands on USB.
605 - CDC Ethernet Emulation Model (EEM) is a newer standard that has
606 a simpler interface that can be used by more USB hardware.
608 RNDIS support is an additional option, more demanding than than
611 Within the USB device, this gadget driver exposes a network device
612 "usbX", where X depends on what other networking devices you have.
613 Treat it like a two-node Ethernet link: host, and gadget.
615 The Linux-USB host-side "usbnet" driver interoperates with this
616 driver, so that deep I/O queues can be supported. On 2.4 kernels,
617 use "CDCEther" instead, if you're using the CDC option. That CDC
618 mode should also interoperate with standard CDC Ethernet class
619 drivers on other host operating systems.
621 Say "y" to link the driver statically, or "m" to build a
622 dynamically linked module called "g_ether".
627 select USB_LIBCOMPOSITE
630 Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
631 and Microsoft provides redistributable binary RNDIS drivers for
632 older versions of Windows.
634 If you say "y" here, the Ethernet gadget driver will try to provide
635 a second device configuration, supporting RNDIS to talk to such
638 To make MS-Windows work with this, use Documentation/usb/linux.inf
639 as the "driver info file". For versions of MS-Windows older than
640 XP, you'll need to download drivers from Microsoft's website; a URL
641 is given in comments found in that info file.
644 bool "Ethernet Emulation Model (EEM) support"
646 select USB_LIBCOMPOSITE
649 CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
650 and therefore can be supported by more hardware. Technically ECM and
651 EEM are designed for different applications. The ECM model extends
652 the network interface to the target (e.g. a USB cable modem), and the
653 EEM model is for mobile devices to communicate with hosts using
654 ethernet over USB. For Linux gadgets, however, the interface with
655 the host is the same (a usbX device), so the differences are minimal.
657 If you say "y" here, the Ethernet gadget driver will use the EEM
658 protocol rather than ECM. If unsure, say "n".
661 tristate "Network Control Model (NCM) support"
663 select USB_LIBCOMPOSITE
666 This driver implements USB CDC NCM subclass standard. NCM is
667 an advanced protocol for Ethernet encapsulation, allows grouping
668 of several ethernet frames into one USB transfer and different
669 alignment possibilities.
671 Say "y" to link the driver statically, or "m" to build a
672 dynamically linked module called "g_ncm".
675 tristate "Gadget Filesystem"
677 This driver provides a filesystem based API that lets user mode
678 programs implement a single-configuration USB device, including
679 endpoint I/O and control requests that don't relate to enumeration.
680 All endpoints, transfer speeds, and transfer types supported by
681 the hardware are available, through read() and write() calls.
683 Say "y" to link the driver statically, or "m" to build a
684 dynamically linked module called "gadgetfs".
686 config USB_FUNCTIONFS
687 tristate "Function Filesystem"
688 select USB_LIBCOMPOSITE
689 select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
691 The Function Filesystem (FunctionFS) lets one create USB
692 composite functions in user space in the same way GadgetFS
693 lets one create USB gadgets in user space. This allows creation
694 of composite gadgets such that some of the functions are
695 implemented in kernel space (for instance Ethernet, serial or
696 mass storage) and other are implemented in user space.
698 If you say "y" or "m" here you will be able what kind of
699 configurations the gadget will provide.
701 Say "y" to link the driver statically, or "m" to build
702 a dynamically linked module called "g_ffs".
704 config USB_FUNCTIONFS_ETH
705 bool "Include configuration with CDC ECM (Ethernet)"
706 depends on USB_FUNCTIONFS && NET
708 Include a configuration with CDC ECM function (Ethernet) and the
711 config USB_FUNCTIONFS_RNDIS
712 bool "Include configuration with RNDIS (Ethernet)"
713 depends on USB_FUNCTIONFS && NET
715 Include a configuration with RNDIS function (Ethernet) and the Filesystem.
717 config USB_FUNCTIONFS_GENERIC
718 bool "Include 'pure' configuration"
719 depends on USB_FUNCTIONFS
721 Include a configuration with the Function Filesystem alone with
722 no Ethernet interface.
724 config USB_FILE_STORAGE
725 tristate "File-backed Storage Gadget (DEPRECATED)"
728 The File-backed Storage Gadget acts as a USB Mass Storage
729 disk drive. As its storage repository it can use a regular
730 file or a block device (in much the same way as the "loop"
731 device driver), specified as a module parameter.
733 Say "y" to link the driver statically, or "m" to build a
734 dynamically linked module called "g_file_storage".
736 NOTE: This driver is deprecated. Its replacement is the
739 config USB_FILE_STORAGE_TEST
740 bool "File-backed Storage Gadget testing version"
741 depends on USB_FILE_STORAGE
744 Say "y" to generate the larger testing version of the
745 File-backed Storage Gadget, useful for probing the
746 behavior of USB Mass Storage hosts. Not needed for
749 config USB_MASS_STORAGE
750 tristate "Mass Storage Gadget"
752 select USB_LIBCOMPOSITE
754 The Mass Storage Gadget acts as a USB Mass Storage disk drive.
755 As its storage repository it can use a regular file or a block
756 device (in much the same way as the "loop" device driver),
757 specified as a module parameter or sysfs option.
759 This driver is an updated replacement for the deprecated
760 File-backed Storage Gadget (g_file_storage).
762 Say "y" to link the driver statically, or "m" to build
763 a dynamically linked module called "g_mass_storage".
765 config USB_GADGET_TARGET
766 tristate "USB Gadget Target Fabric Module"
767 depends on TARGET_CORE
768 select USB_LIBCOMPOSITE
770 This fabric is an USB gadget. Two USB protocols are supported that is
771 BBB or BOT (Bulk Only Transport) and UAS (USB Attached SCSI). BOT is
772 advertised on alternative interface 0 (primary) and UAS is on
773 alternative interface 1. Both protocols can work on USB2.0 and USB3.0.
774 UAS utilizes the USB 3.0 feature called streams support.
777 tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
778 select USB_LIBCOMPOSITE
780 The Serial Gadget talks to the Linux-USB generic serial driver.
781 This driver supports a CDC-ACM module option, which can be used
782 to interoperate with MS-Windows hosts or with the Linux-USB
785 This driver also supports a CDC-OBEX option. You will need a
786 user space OBEX server talking to /dev/ttyGS*, since the kernel
787 itself doesn't implement the OBEX protocol.
789 Say "y" to link the driver statically, or "m" to build a
790 dynamically linked module called "g_serial".
792 For more information, see Documentation/usb/gadget_serial.txt
793 which includes instructions and a "driver info file" needed to
794 make MS-Windows work with CDC ACM.
796 config USB_MIDI_GADGET
797 tristate "MIDI Gadget"
799 select USB_LIBCOMPOSITE
802 The MIDI Gadget acts as a USB Audio device, with one MIDI
803 input and one MIDI output. These MIDI jacks appear as
804 a sound "card" in the ALSA sound system. Other MIDI
805 connections can then be made on the gadget system, using
806 ALSA's aconnect utility etc.
808 Say "y" to link the driver statically, or "m" to build a
809 dynamically linked module called "g_midi".
812 tristate "Printer Gadget"
813 select USB_LIBCOMPOSITE
815 The Printer Gadget channels data between the USB host and a
816 userspace program driving the print engine. The user space
817 program reads and writes the device file /dev/g_printer to
818 receive or send printer data. It can use ioctl calls to
819 the device file to get or set printer status.
821 Say "y" to link the driver statically, or "m" to build a
822 dynamically linked module called "g_printer".
824 For more information, see Documentation/usb/gadget_printer.txt
825 which includes sample code for accessing the device file.
827 config USB_CDC_COMPOSITE
828 tristate "CDC Composite Device (Ethernet and ACM)"
830 select USB_LIBCOMPOSITE
832 This driver provides two functions in one configuration:
833 a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link.
835 This driver requires four bulk and two interrupt endpoints,
836 plus the ability to handle altsettings. Not all peripheral
837 controllers are that capable.
839 Say "y" to link the driver statically, or "m" to build a
840 dynamically linked module.
843 tristate "Nokia composite gadget"
845 select USB_LIBCOMPOSITE
847 The Nokia composite gadget provides support for acm, obex
848 and phonet in only one composite gadget driver.
850 It's only really useful for N900 hardware. If you're building
851 a kernel for N900, say Y or M here. If unsure, say N.
854 tristate "CDC Composite Device (ACM and mass storage)"
856 select USB_LIBCOMPOSITE
858 This driver provides two functions in one configuration:
859 a mass storage, and a CDC ACM (serial port) link.
861 Say "y" to link the driver statically, or "m" to build a
862 dynamically linked module called "g_acm_ms".
865 tristate "Multifunction Composite Gadget"
866 depends on BLOCK && NET
867 select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
868 select USB_LIBCOMPOSITE
870 The Multifunction Composite Gadget provides Ethernet (RNDIS
871 and/or CDC Ethernet), mass storage and ACM serial link
874 You will be asked to choose which of the two configurations is
875 to be available in the gadget. At least one configuration must
876 be chosen to make the gadget usable. Selecting more than one
877 configuration will prevent Windows from automatically detecting
878 the gadget as a composite gadget, so an INF file will be needed to
881 Say "y" to link the driver statically, or "m" to build a
882 dynamically linked module called "g_multi".
884 config USB_G_MULTI_RNDIS
885 bool "RNDIS + CDC Serial + Storage configuration"
886 depends on USB_G_MULTI
889 This option enables a configuration with RNDIS, CDC Serial and
890 Mass Storage functions available in the Multifunction Composite
891 Gadget. This is the configuration dedicated for Windows since RNDIS
892 is Microsoft's protocol.
896 config USB_G_MULTI_CDC
897 bool "CDC Ethernet + CDC Serial + Storage configuration"
898 depends on USB_G_MULTI
901 This option enables a configuration with CDC Ethernet (ECM), CDC
902 Serial and Mass Storage functions available in the Multifunction
908 tristate "HID Gadget"
909 select USB_LIBCOMPOSITE
911 The HID gadget driver provides generic emulation of USB
912 Human Interface Devices (HID).
914 For more information, see Documentation/usb/gadget_hid.txt which
915 includes sample code for accessing the device files.
917 Say "y" to link the driver statically, or "m" to build a
918 dynamically linked module called "g_hid".
920 # Standalone / single function gadgets
922 tristate "EHCI Debug Device Gadget"
923 select USB_LIBCOMPOSITE
925 This gadget emulates an EHCI Debug device. This is useful when you want
926 to interact with an EHCI Debug Port.
928 Say "y" to link the driver statically, or "m" to build a
929 dynamically linked module called "g_dbgp".
933 prompt "EHCI Debug Device mode"
934 default USB_G_DBGP_SERIAL
936 config USB_G_DBGP_PRINTK
937 depends on USB_G_DBGP
940 Directly printk() received data. No interaction.
942 config USB_G_DBGP_SERIAL
943 depends on USB_G_DBGP
946 Userland can interact using /dev/ttyGSxxx.
950 # put drivers that need isochronous transfer support (for audio
951 # or video class gadget drivers), or specific hardware, here.
953 tristate "USB Webcam Gadget"
956 The Webcam Gadget acts as a composite USB Audio and Video Class
957 device. It provides a userspace API to process UVC control requests
958 and stream video data to the host.
960 Say "y" to link the driver statically, or "m" to build a
961 dynamically linked module called "g_webcam".