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.
127 prompt "USB Peripheral Controller"
129 A USB device uses a controller to talk to its host.
130 Systems should have only one such upstream link.
131 Many controller drivers are platform-specific; these
132 often need board-specific hooks.
135 # Integrated controllers
139 tristate "Atmel AT91 USB Device Port"
140 depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91CAP9 && !ARCH_AT91SAM9G45
142 Many Atmel AT91 processors (such as the AT91RM2000) have a
143 full speed USB Device Port with support for five configurable
144 endpoints (plus endpoint zero).
146 Say "y" to link the driver statically, or "m" to build a
147 dynamically linked module called "at91_udc" and force all
148 gadget drivers to also be dynamically linked.
150 config USB_ATMEL_USBA
151 tristate "Atmel USBA"
152 select USB_GADGET_DUALSPEED
153 depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
155 USBA is the integrated high-speed USB Device controller on
156 the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
159 tristate "Freescale Highspeed USB DR Peripheral Controller"
160 depends on FSL_SOC || ARCH_MXC
161 select USB_GADGET_DUALSPEED
162 select USB_FSL_MPH_DR_OF if OF
164 Some of Freescale PowerPC processors have a High Speed
165 Dual-Role(DR) USB controller, which supports device mode.
167 The number of programmable endpoints is different through
170 Say "y" to link the driver statically, or "m" to build a
171 dynamically linked module called "fsl_usb2_udc" and force
172 all gadget drivers to also be dynamically linked.
175 tristate "Faraday FUSB300 USB Peripheral Controller"
176 depends on !PHYS_ADDR_T_64BIT
177 select USB_GADGET_DUALSPEED
179 Faraday usb device controller FUSB300 driver
182 tristate "OMAP USB Device Controller"
184 select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
185 select USB_OTG_UTILS if ARCH_OMAP
187 Many Texas Instruments OMAP processors have flexible full
188 speed USB device controllers, with support for up to 30
189 endpoints (plus endpoint zero). This driver supports the
190 controller in the OMAP 1611, and should work with controllers
191 in other OMAP processors too, given minor tweaks.
193 Say "y" to link the driver statically, or "m" to build a
194 dynamically linked module called "omap_udc" and force all
195 gadget drivers to also be dynamically linked.
198 tristate "PXA 25x or IXP 4xx"
199 depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
202 Intel's PXA 25x series XScale ARM-5TE processors include
203 an integrated full speed USB 1.1 device controller. The
204 controller in the IXP 4xx series is register-compatible.
206 It has fifteen fixed-function endpoints, as well as endpoint
207 zero (for control transfers).
209 Say "y" to link the driver statically, or "m" to build a
210 dynamically linked module called "pxa25x_udc" and force all
211 gadget drivers to also be dynamically linked.
213 # if there's only one gadget driver, using only two bulk endpoints,
214 # don't waste memory for the other endpoints
215 config USB_PXA25X_SMALL
216 depends on USB_PXA25X
218 default n if USB_ETH_RNDIS
219 default y if USB_ZERO
221 default y if USB_G_SERIAL
224 tristate "Renesas R8A66597 USB Peripheral Controller"
225 select USB_GADGET_DUALSPEED
227 R8A66597 is a discrete USB host and peripheral controller chip that
228 supports both full and high speed USB 2.0 data transfers.
229 It has nine configurable endpoints, and endpoint zero.
231 Say "y" to link the driver statically, or "m" to build a
232 dynamically linked module called "r8a66597_udc" and force all
233 gadget drivers to also be dynamically linked.
235 config USB_RENESAS_USBHS_UDC
236 tristate 'Renesas USBHS controller'
237 depends on USB_RENESAS_USBHS
238 select USB_GADGET_DUALSPEED
240 Renesas USBHS is a discrete USB host and peripheral controller chip
241 that supports both full and high speed USB 2.0 data transfers.
242 It has nine or more configurable endpoints, and endpoint zero.
244 Say "y" to link the driver statically, or "m" to build a
245 dynamically linked module called "renesas_usbhs" and force all
246 gadget drivers to also be dynamically linked.
250 depends on ARCH_PXA && (PXA27x || PXA3xx)
253 Intel's PXA 27x series XScale ARM v5TE processors include
254 an integrated full speed USB 1.1 device controller.
256 It has up to 23 endpoints, as well as endpoint zero (for
259 Say "y" to link the driver statically, or "m" to build a
260 dynamically linked module called "pxa27x_udc" and force all
261 gadget drivers to also be dynamically linked.
264 tristate "S3C HS/OtG USB Device controller"
265 depends on S3C_DEV_USB_HSOTG
266 select USB_GADGET_S3C_HSOTG_PIO
267 select USB_GADGET_DUALSPEED
269 The Samsung S3C64XX USB2.0 high-speed gadget controller
270 integrated into the S3C64XX series SoC.
273 tristate "Freescale i.MX1 USB Peripheral Controller"
276 Freescale's i.MX1 includes an integrated full speed
277 USB 1.1 device controller.
279 It has Six fixed-function endpoints, as well as endpoint
280 zero (for control transfers).
282 Say "y" to link the driver statically, or "m" to build a
283 dynamically linked module called "imx_udc" and force all
284 gadget drivers to also be dynamically linked.
287 tristate "S3C2410 USB Device Controller"
288 depends on ARCH_S3C2410
290 Samsung's S3C2410 is an ARM-4 processor with an integrated
291 full speed USB 1.1 device controller. It has 4 configurable
292 endpoints, as well as endpoint zero (for control transfers).
294 This driver has been tested on the S3C2410, S3C2412, and
297 config USB_S3C2410_DEBUG
298 boolean "S3C2410 udc debug messages"
299 depends on USB_S3C2410
302 tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
303 depends on ARCH_S3C2410
304 select USB_GADGET_DUALSPEED
306 Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
307 integrated with dual speed USB 2.0 device controller. It has
308 8 endpoints, as well as endpoint zero.
310 This driver has been tested on S3C2416 and S3C2450 processors.
313 tristate "Marvell USB2.0 Device Controller"
314 select USB_GADGET_DUALSPEED
316 Marvell Socs (including PXA and MMP series) include a high speed
317 USB2.0 OTG controller, which can be configured as high speed or
318 full speed USB peripheral.
321 # Controllers available in both integrated and discrete versions
324 # musb builds in ../musb along with host support
325 config USB_GADGET_MUSB_HDRC
326 tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)"
327 depends on USB_MUSB_HDRC
328 select USB_GADGET_DUALSPEED
330 This OTG-capable silicon IP is used in dual designs including
331 the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
334 tristate "Renesas M66592 USB Peripheral Controller"
335 select USB_GADGET_DUALSPEED
337 M66592 is a discrete USB peripheral controller chip that
338 supports both full and high speed USB 2.0 data transfers.
339 It has seven configurable endpoints, and endpoint zero.
341 Say "y" to link the driver statically, or "m" to build a
342 dynamically linked module called "m66592_udc" and force all
343 gadget drivers to also be dynamically linked.
346 # Controllers available only in discrete form (and all PCI controllers)
349 config USB_AMD5536UDC
350 tristate "AMD5536 UDC"
352 select USB_GADGET_DUALSPEED
354 The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
355 It is a USB Highspeed DMA capable USB device controller. Beside ep0
356 it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
357 The UDC port supports OTG operation, and may be used as a host port
358 if it's not being used to implement peripheral or OTG roles.
360 Say "y" to link the driver statically, or "m" to build a
361 dynamically linked module called "amd5536udc" and force all
362 gadget drivers to also be dynamically linked.
365 tristate "Freescale QE/CPM USB Device Controller"
366 depends on FSL_SOC && (QUICC_ENGINE || CPM)
368 Some of Freescale PowerPC processors have a Full Speed
369 QE/CPM2 USB controller, which support device mode with 4
370 programmable endpoints. This driver supports the
371 controller in the MPC8360 and MPC8272, and should work with
372 controllers having QE or CPM2, given minor tweaks.
374 Set CONFIG_USB_GADGET to "m" to build this driver as a
375 dynamically linked module called "fsl_qe_udc".
377 config USB_CI13XXX_PCI
378 tristate "MIPS USB CI13xxx PCI UDC"
380 select USB_GADGET_DUALSPEED
382 MIPS USB IP core family device controller
383 Currently it only supports IP part number CI13412
385 Say "y" to link the driver statically, or "m" to build a
386 dynamically linked module called "ci13xxx_udc" and force all
387 gadget drivers to also be dynamically linked.
390 tristate "PLX NET2272"
391 select USB_GADGET_DUALSPEED
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"
415 select USB_GADGET_DUALSPEED
417 NetChip 2280 / 2282 is a PCI based USB peripheral controller which
418 supports both full and high speed USB 2.0 data transfers.
420 It has six configurable endpoints, as well as endpoint zero
421 (for control transfers) and several endpoints with dedicated
424 Say "y" to link the driver statically, or "m" to build a
425 dynamically linked module called "net2280" and force all
426 gadget drivers to also be dynamically linked.
429 tristate "Toshiba TC86C001 'Goku-S'"
432 The Toshiba TC86C001 is a PCI device which includes controllers
433 for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
435 The device controller has three configurable (bulk or interrupt)
436 endpoints, plus endpoint zero (for control transfers).
438 Say "y" to link the driver statically, or "m" to build a
439 dynamically linked module called "goku_udc" and to force all
440 gadget drivers to also be dynamically linked.
443 tristate "Intel Langwell USB Device Controller"
445 depends on !PHYS_ADDR_T_64BIT
446 select USB_GADGET_DUALSPEED
448 Intel Langwell USB Device Controller is a High-Speed USB
449 On-The-Go device controller.
451 The number of programmable endpoints is different through
454 Say "y" to link the driver statically, or "m" to build a
455 dynamically linked module called "langwell_udc" and force all
456 gadget drivers to also be dynamically linked.
459 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC"
461 select USB_GADGET_DUALSPEED
463 This is a USB device driver for EG20T PCH.
464 EG20T PCH is the platform controller hub that is used in Intel's
465 general embedded platform. EG20T PCH has USB device interface.
466 Using this interface, it is able to access system devices connected
468 This driver enables USB device function.
469 USB device is a USB peripheral controller which
470 supports both full and high speed USB 2.0 data transfers.
471 This driver supports both control transfer and bulk transfer modes.
472 This driver dose not support interrupt transfer or isochronous
475 This driver also can be used for LAPIS Semiconductor's ML7213 which is
476 for IVI(In-Vehicle Infotainment) use.
477 ML7831 is for general purpose use.
478 ML7213/ML7831 is companion chip for Intel Atom E6xx series.
479 ML7213/ML7831 is completely compatible for Intel EG20T PCH.
481 config USB_CI13XXX_MSM
482 tristate "MIPS USB CI13xxx for MSM"
484 select USB_GADGET_DUALSPEED
487 MSM SoC has chipidea USB controller. This driver uses
489 This driver depends on OTG driver for PHY initialization,
490 clock management, powering up VBUS, and power management.
491 This driver is not supported on boards like trout which
494 Say "y" to link the driver statically, or "m" to build a
495 dynamically linked module called "ci13xxx_msm" and force all
496 gadget drivers to also be dynamically linked.
499 # LAST -- dummy/emulated controller
503 tristate "Dummy HCD (DEVELOPMENT)"
504 depends on USB=y || (USB=m && USB_GADGET=m)
505 select USB_GADGET_DUALSPEED
506 select USB_GADGET_SUPERSPEED
508 This host controller driver emulates USB, looping all data transfer
509 requests back to a USB "gadget driver" in the same host. The host
510 side is the master; the gadget side is the slave. Gadget drivers
511 can be high, full, or low speed; and they have access to endpoints
512 like those from NET2280, PXA2xx, or SA1100 hardware.
514 This may help in some stages of creating a driver to embed in a
515 Linux device, since it lets you debug several parts of the gadget
516 driver without its hardware or drivers being involved.
518 Since such a gadget side driver needs to interoperate with a host
519 side Linux-USB device driver, this may help to debug both sides
520 of a USB protocol stack.
522 Say "y" to link the driver statically, or "m" to build a
523 dynamically linked module called "dummy_hcd" and force all
524 gadget drivers to also be dynamically linked.
526 # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
527 # first and will be selected by default.
531 # Selected by UDC drivers that support high-speed operation.
532 config USB_GADGET_DUALSPEED
535 # Selected by UDC drivers that support super-speed opperation
536 config USB_GADGET_SUPERSPEED
538 depends on USB_GADGET_DUALSPEED
544 tristate "USB Gadget Drivers"
547 A Linux "Gadget Driver" talks to the USB Peripheral Controller
548 driver through the abstract "gadget" API. Some other operating
549 systems call these "client" drivers, of which "class drivers"
550 are a subset (implementing a USB device class specification).
551 A gadget driver implements one or more USB functions using
552 the peripheral hardware.
554 Gadget drivers are hardware-neutral, or "platform independent",
555 except that they sometimes must understand quirks or limitations
556 of the particular controllers they work with. For example, when
557 a controller doesn't support alternate configurations or provide
558 enough of the right types of endpoints, the gadget driver might
559 not be able work with that controller, or might need to implement
560 a less common variant of a device class protocol.
562 # this first set of drivers all depend on bulk-capable hardware.
565 tristate "Gadget Zero (DEVELOPMENT)"
567 Gadget Zero is a two-configuration device. It either sinks and
568 sources bulk data; or it loops back a configurable number of
569 transfers. It also implements control requests, for "chapter 9"
570 conformance. The driver needs only two bulk-capable endpoints, so
571 it can work on top of most device-side usb controllers. It's
572 useful for testing, and is also a working example showing how
573 USB "gadget drivers" can be written.
575 Make this be the first driver you try using on top of any new
576 USB peripheral controller driver. Then you can use host-side
577 test software, like the "usbtest" driver, to put your hardware
578 and its driver through a basic set of functional tests.
580 Gadget Zero also works with the host-side "usb-skeleton" driver,
581 and with many kinds of host-side test software. You may need
582 to tweak product and vendor IDs before host software knows about
583 this device, and arrange to select an appropriate configuration.
585 Say "y" to link the driver statically, or "m" to build a
586 dynamically linked module called "g_zero".
588 config USB_ZERO_HNPTEST
589 boolean "HNP Test Device"
590 depends on USB_ZERO && USB_OTG
592 You can configure this device to enumerate using the device
593 identifiers of the USB-OTG test device. That means that when
594 this gadget connects to another OTG device, with this one using
595 the "B-Peripheral" role, that device will use HNP to let this
596 one serve as the USB host instead (in the "B-Host" role).
599 tristate "Audio Gadget (EXPERIMENTAL)"
603 Gadget Audio is compatible with USB Audio Class specification 1.0.
604 It will include at least one AudioControl interface, zero or more
605 AudioStream interface and zero or more MIDIStream interface.
607 Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to
608 playback or capture audio stream.
610 Say "y" to link the driver statically, or "m" to build a
611 dynamically linked module called "g_audio".
614 tristate "Ethernet Gadget (with CDC Ethernet support)"
618 This driver implements Ethernet style communication, in one of
621 - The "Communication Device Class" (CDC) Ethernet Control Model.
622 That protocol is often avoided with pure Ethernet adapters, in
623 favor of simpler vendor-specific hardware, but is widely
624 supported by firmware for smart network devices.
626 - On hardware can't implement that protocol, a simple CDC subset
627 is used, placing fewer demands on USB.
629 - CDC Ethernet Emulation Model (EEM) is a newer standard that has
630 a simpler interface that can be used by more USB hardware.
632 RNDIS support is an additional option, more demanding than than
635 Within the USB device, this gadget driver exposes a network device
636 "usbX", where X depends on what other networking devices you have.
637 Treat it like a two-node Ethernet link: host, and gadget.
639 The Linux-USB host-side "usbnet" driver interoperates with this
640 driver, so that deep I/O queues can be supported. On 2.4 kernels,
641 use "CDCEther" instead, if you're using the CDC option. That CDC
642 mode should also interoperate with standard CDC Ethernet class
643 drivers on other host operating systems.
645 Say "y" to link the driver statically, or "m" to build a
646 dynamically linked module called "g_ether".
653 Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
654 and Microsoft provides redistributable binary RNDIS drivers for
655 older versions of Windows.
657 If you say "y" here, the Ethernet gadget driver will try to provide
658 a second device configuration, supporting RNDIS to talk to such
661 To make MS-Windows work with this, use Documentation/usb/linux.inf
662 as the "driver info file". For versions of MS-Windows older than
663 XP, you'll need to download drivers from Microsoft's website; a URL
664 is given in comments found in that info file.
667 bool "Ethernet Emulation Model (EEM) support"
671 CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
672 and therefore can be supported by more hardware. Technically ECM and
673 EEM are designed for different applications. The ECM model extends
674 the network interface to the target (e.g. a USB cable modem), and the
675 EEM model is for mobile devices to communicate with hosts using
676 ethernet over USB. For Linux gadgets, however, the interface with
677 the host is the same (a usbX device), so the differences are minimal.
679 If you say "y" here, the Ethernet gadget driver will use the EEM
680 protocol rather than ECM. If unsure, say "n".
683 tristate "Network Control Model (NCM) support"
687 This driver implements USB CDC NCM subclass standard. NCM is
688 an advanced protocol for Ethernet encapsulation, allows grouping
689 of several ethernet frames into one USB transfer and diffferent
690 alignment possibilities.
692 Say "y" to link the driver statically, or "m" to build a
693 dynamically linked module called "g_ncm".
696 tristate "Gadget Filesystem (EXPERIMENTAL)"
697 depends on EXPERIMENTAL
699 This driver provides a filesystem based API that lets user mode
700 programs implement a single-configuration USB device, including
701 endpoint I/O and control requests that don't relate to enumeration.
702 All endpoints, transfer speeds, and transfer types supported by
703 the hardware are available, through read() and write() calls.
705 Currently, this option is still labelled as EXPERIMENTAL because
706 of existing race conditions in the underlying in-kernel AIO core.
708 Say "y" to link the driver statically, or "m" to build a
709 dynamically linked module called "gadgetfs".
711 config USB_FUNCTIONFS
712 tristate "Function Filesystem (EXPERIMENTAL)"
713 depends on EXPERIMENTAL
714 select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
716 The Function Filesystem (FunctionFS) lets one create USB
717 composite functions in user space in the same way GadgetFS
718 lets one create USB gadgets in user space. This allows creation
719 of composite gadgets such that some of the functions are
720 implemented in kernel space (for instance Ethernet, serial or
721 mass storage) and other are implemented in user space.
723 If you say "y" or "m" here you will be able what kind of
724 configurations the gadget will provide.
726 Say "y" to link the driver statically, or "m" to build
727 a dynamically linked module called "g_ffs".
729 config USB_FUNCTIONFS_ETH
730 bool "Include configuration with CDC ECM (Ethernet)"
731 depends on USB_FUNCTIONFS && NET
733 Include a configuration with CDC ECM function (Ethernet) and the
736 config USB_FUNCTIONFS_RNDIS
737 bool "Include configuration with RNDIS (Ethernet)"
738 depends on USB_FUNCTIONFS && NET
740 Include a configuration with RNDIS function (Ethernet) and the Filesystem.
742 config USB_FUNCTIONFS_GENERIC
743 bool "Include 'pure' configuration"
744 depends on USB_FUNCTIONFS
746 Include a configuration with the Function Filesystem alone with
747 no Ethernet interface.
749 config USB_FILE_STORAGE
750 tristate "File-backed Storage Gadget (DEPRECATED)"
753 The File-backed Storage Gadget acts as a USB Mass Storage
754 disk drive. As its storage repository it can use a regular
755 file or a block device (in much the same way as the "loop"
756 device driver), specified as a module parameter.
758 Say "y" to link the driver statically, or "m" to build a
759 dynamically linked module called "g_file_storage".
761 NOTE: This driver is deprecated. Its replacement is the
764 config USB_FILE_STORAGE_TEST
765 bool "File-backed Storage Gadget testing version"
766 depends on USB_FILE_STORAGE
769 Say "y" to generate the larger testing version of the
770 File-backed Storage Gadget, useful for probing the
771 behavior of USB Mass Storage hosts. Not needed for
774 config USB_MASS_STORAGE
775 tristate "Mass Storage Gadget"
778 The Mass Storage Gadget acts as a USB Mass Storage disk drive.
779 As its storage repository it can use a regular file or a block
780 device (in much the same way as the "loop" device driver),
781 specified as a module parameter or sysfs option.
783 This driver is an updated replacement for the deprecated
784 File-backed Storage Gadget (g_file_storage).
786 Say "y" to link the driver statically, or "m" to build
787 a dynamically linked module called "g_mass_storage".
790 tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
792 The Serial Gadget talks to the Linux-USB generic serial driver.
793 This driver supports a CDC-ACM module option, which can be used
794 to interoperate with MS-Windows hosts or with the Linux-USB
797 This driver also supports a CDC-OBEX option. You will need a
798 user space OBEX server talking to /dev/ttyGS*, since the kernel
799 itself doesn't implement the OBEX protocol.
801 Say "y" to link the driver statically, or "m" to build a
802 dynamically linked module called "g_serial".
804 For more information, see Documentation/usb/gadget_serial.txt
805 which includes instructions and a "driver info file" needed to
806 make MS-Windows work with CDC ACM.
808 config USB_MIDI_GADGET
809 tristate "MIDI Gadget (EXPERIMENTAL)"
810 depends on SND && EXPERIMENTAL
813 The MIDI Gadget acts as a USB Audio device, with one MIDI
814 input and one MIDI output. These MIDI jacks appear as
815 a sound "card" in the ALSA sound system. Other MIDI
816 connections can then be made on the gadget system, using
817 ALSA's aconnect utility etc.
819 Say "y" to link the driver statically, or "m" to build a
820 dynamically linked module called "g_midi".
823 tristate "Printer Gadget"
825 The Printer Gadget channels data between the USB host and a
826 userspace program driving the print engine. The user space
827 program reads and writes the device file /dev/g_printer to
828 receive or send printer data. It can use ioctl calls to
829 the device file to get or set printer status.
831 Say "y" to link the driver statically, or "m" to build a
832 dynamically linked module called "g_printer".
834 For more information, see Documentation/usb/gadget_printer.txt
835 which includes sample code for accessing the device file.
837 config USB_CDC_COMPOSITE
838 tristate "CDC Composite Device (Ethernet and ACM)"
841 This driver provides two functions in one configuration:
842 a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link.
844 This driver requires four bulk and two interrupt endpoints,
845 plus the ability to handle altsettings. Not all peripheral
846 controllers are that capable.
848 Say "y" to link the driver statically, or "m" to build a
849 dynamically linked module.
852 tristate "Nokia composite gadget"
855 The Nokia composite gadget provides support for acm, obex
856 and phonet in only one composite gadget driver.
858 It's only really useful for N900 hardware. If you're building
859 a kernel for N900, say Y or M here. If unsure, say N.
862 tristate "CDC Composite Device (ACM and mass storage)"
865 This driver provides two functions in one configuration:
866 a mass storage, and a CDC ACM (serial port) link.
868 Say "y" to link the driver statically, or "m" to build a
869 dynamically linked module called "g_acm_ms".
872 tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
873 depends on BLOCK && NET
874 select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
876 The Multifunction Composite Gadget provides Ethernet (RNDIS
877 and/or CDC Ethernet), mass storage and ACM serial link
880 You will be asked to choose which of the two configurations is
881 to be available in the gadget. At least one configuration must
882 be chosen to make the gadget usable. Selecting more than one
883 configuration will prevent Windows from automatically detecting
884 the gadget as a composite gadget, so an INF file will be needed to
887 Say "y" to link the driver statically, or "m" to build a
888 dynamically linked module called "g_multi".
890 config USB_G_MULTI_RNDIS
891 bool "RNDIS + CDC Serial + Storage configuration"
892 depends on USB_G_MULTI
895 This option enables a configuration with RNDIS, CDC Serial and
896 Mass Storage functions available in the Multifunction Composite
897 Gadget. This is the configuration dedicated for Windows since RNDIS
898 is Microsoft's protocol.
902 config USB_G_MULTI_CDC
903 bool "CDC Ethernet + CDC Serial + Storage configuration"
904 depends on USB_G_MULTI
907 This option enables a configuration with CDC Ethernet (ECM), CDC
908 Serial and Mass Storage functions available in the Multifunction
914 tristate "HID Gadget"
916 The HID gadget driver provides generic emulation of USB
917 Human Interface Devices (HID).
919 For more information, see Documentation/usb/gadget_hid.txt which
920 includes sample code for accessing the device files.
922 Say "y" to link the driver statically, or "m" to build a
923 dynamically linked module called "g_hid".
926 tristate "EHCI Debug Device Gadget"
928 This gadget emulates an EHCI Debug device. This is useful when you want
929 to interact with an EHCI Debug Port.
931 Say "y" to link the driver statically, or "m" to build a
932 dynamically linked module called "g_dbgp".
936 prompt "EHCI Debug Device mode"
937 default USB_G_DBGP_SERIAL
939 config USB_G_DBGP_PRINTK
940 depends on USB_G_DBGP
943 Directly printk() received data. No interaction.
945 config USB_G_DBGP_SERIAL
946 depends on USB_G_DBGP
949 Userland can interact using /dev/ttyGSxxx.
953 # put drivers that need isochronous transfer support (for audio
954 # or video class gadget drivers), or specific hardware, here.
956 tristate "USB Webcam Gadget"
959 The Webcam Gadget acts as a composite USB Audio and Video Class
960 device. It provides a userspace API to process UVC control requests
961 and stream video data to the host.
963 Say "y" to link the driver statically, or "m" to build a
964 dynamically linked module called "g_webcam".