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_FUSB300
180 boolean "Faraday FUSB300 USB Peripheral Controller"
181 select USB_GADGET_DUALSPEED
183 Faraday usb device controller FUSB300 driver
187 depends on USB_GADGET_FUSB300
189 select USB_GADGET_SELECTED
191 config USB_GADGET_OMAP
192 boolean "OMAP USB Device Controller"
194 select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
195 select USB_OTG_UTILS if ARCH_OMAP
197 Many Texas Instruments OMAP processors have flexible full
198 speed USB device controllers, with support for up to 30
199 endpoints (plus endpoint zero). This driver supports the
200 controller in the OMAP 1611, and should work with controllers
201 in other OMAP processors too, given minor tweaks.
203 Say "y" to link the driver statically, or "m" to build a
204 dynamically linked module called "omap_udc" and force all
205 gadget drivers to also be dynamically linked.
209 depends on USB_GADGET_OMAP
211 select USB_GADGET_SELECTED
213 config USB_GADGET_PXA25X
214 boolean "PXA 25x or IXP 4xx"
215 depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
218 Intel's PXA 25x series XScale ARM-5TE processors include
219 an integrated full speed USB 1.1 device controller. The
220 controller in the IXP 4xx series is register-compatible.
222 It has fifteen fixed-function endpoints, as well as endpoint
223 zero (for control transfers).
225 Say "y" to link the driver statically, or "m" to build a
226 dynamically linked module called "pxa25x_udc" and force all
227 gadget drivers to also be dynamically linked.
231 depends on USB_GADGET_PXA25X
233 select USB_GADGET_SELECTED
235 # if there's only one gadget driver, using only two bulk endpoints,
236 # don't waste memory for the other endpoints
237 config USB_PXA25X_SMALL
238 depends on USB_GADGET_PXA25X
240 default n if USB_ETH_RNDIS
241 default y if USB_ZERO
243 default y if USB_G_SERIAL
245 config USB_GADGET_R8A66597
246 boolean "Renesas R8A66597 USB Peripheral Controller"
247 select USB_GADGET_DUALSPEED
249 R8A66597 is a discrete USB host and peripheral controller chip that
250 supports both full and high speed USB 2.0 data transfers.
251 It has nine configurable endpoints, and endpoint zero.
253 Say "y" to link the driver statically, or "m" to build a
254 dynamically linked module called "r8a66597_udc" and force all
255 gadget drivers to also be dynamically linked.
259 depends on USB_GADGET_R8A66597
261 select USB_GADGET_SELECTED
263 config USB_GADGET_RENESAS_USBHS
264 boolean "Renesas USBHS"
265 depends on USB_RENESAS_USBHS
266 select USB_GADGET_DUALSPEED
268 Renesas USBHS is a discrete USB host and peripheral controller
269 chip that supports both full and high speed USB 2.0 data transfers.
270 platform is able to configure endpoint (pipe) style
272 Say "y" to enable the gadget specific portion of the USBHS driver.
275 config USB_RENESAS_USBHS_UDC
277 depends on USB_GADGET_RENESAS_USBHS
279 select USB_GADGET_SELECTED
281 config USB_GADGET_PXA27X
283 depends on ARCH_PXA && (PXA27x || PXA3xx)
286 Intel's PXA 27x series XScale ARM v5TE processors include
287 an integrated full speed USB 1.1 device controller.
289 It has up to 23 endpoints, as well as endpoint zero (for
292 Say "y" to link the driver statically, or "m" to build a
293 dynamically linked module called "pxa27x_udc" and force all
294 gadget drivers to also be dynamically linked.
298 depends on USB_GADGET_PXA27X
300 select USB_GADGET_SELECTED
302 config USB_GADGET_S3C_HSOTG
303 boolean "S3C HS/OtG USB Device controller"
304 depends on S3C_DEV_USB_HSOTG
305 select USB_GADGET_S3C_HSOTG_PIO
306 select USB_GADGET_DUALSPEED
308 The Samsung S3C64XX USB2.0 high-speed gadget controller
309 integrated into the S3C64XX series SoC.
313 depends on USB_GADGET_S3C_HSOTG
315 select USB_GADGET_SELECTED
317 config USB_GADGET_IMX
318 boolean "Freescale IMX USB Peripheral Controller"
321 Freescale's IMX series include an integrated full speed
322 USB 1.1 device controller. The controller in the IMX series
323 is register-compatible.
325 It has Six fixed-function endpoints, as well as endpoint
326 zero (for control transfers).
328 Say "y" to link the driver statically, or "m" to build a
329 dynamically linked module called "imx_udc" and force all
330 gadget drivers to also be dynamically linked.
334 depends on USB_GADGET_IMX
336 select USB_GADGET_SELECTED
338 config USB_GADGET_S3C2410
339 boolean "S3C2410 USB Device Controller"
340 depends on ARCH_S3C2410
342 Samsung's S3C2410 is an ARM-4 processor with an integrated
343 full speed USB 1.1 device controller. It has 4 configurable
344 endpoints, as well as endpoint zero (for control transfers).
346 This driver has been tested on the S3C2410, S3C2412, and
351 depends on USB_GADGET_S3C2410
353 select USB_GADGET_SELECTED
355 config USB_S3C2410_DEBUG
356 boolean "S3C2410 udc debug messages"
357 depends on USB_GADGET_S3C2410
359 config USB_GADGET_S3C_HSUDC
360 boolean "S3C2416, S3C2443 and S3C2450 USB Device Controller"
361 depends on ARCH_S3C2410
362 select USB_GADGET_DUALSPEED
364 Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
365 integrated with dual speed USB 2.0 device controller. It has
366 8 endpoints, as well as endpoint zero.
368 This driver has been tested on S3C2416 and S3C2450 processors.
372 depends on USB_GADGET_S3C_HSUDC
374 select USB_GADGET_SELECTED
376 config USB_GADGET_PXA_U2O
377 boolean "PXA9xx Processor USB2.0 controller"
378 select USB_GADGET_DUALSPEED
380 PXA9xx Processor series include a high speed USB2.0 device
381 controller, which support high speed and full speed USB peripheral.
385 depends on USB_GADGET_PXA_U2O
387 select USB_GADGET_SELECTED
390 # Controllers available in both integrated and discrete versions
393 # musb builds in ../musb along with host support
394 config USB_GADGET_MUSB_HDRC
395 boolean "Inventra HDRC USB Peripheral (TI, ADI, ...)"
396 depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
397 select USB_GADGET_DUALSPEED
398 select USB_GADGET_SELECTED
400 This OTG-capable silicon IP is used in dual designs including
401 the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
403 config USB_GADGET_M66592
404 boolean "Renesas M66592 USB Peripheral Controller"
405 select USB_GADGET_DUALSPEED
407 M66592 is a discrete USB peripheral controller chip that
408 supports both full and high speed USB 2.0 data transfers.
409 It has seven configurable endpoints, and endpoint zero.
411 Say "y" to link the driver statically, or "m" to build a
412 dynamically linked module called "m66592_udc" and force all
413 gadget drivers to also be dynamically linked.
417 depends on USB_GADGET_M66592
419 select USB_GADGET_SELECTED
422 # Controllers available only in discrete form (and all PCI controllers)
425 config USB_GADGET_AMD5536UDC
426 boolean "AMD5536 UDC"
428 select USB_GADGET_DUALSPEED
430 The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
431 It is a USB Highspeed DMA capable USB device controller. Beside ep0
432 it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
433 The UDC port supports OTG operation, and may be used as a host port
434 if it's not being used to implement peripheral or OTG roles.
436 Say "y" to link the driver statically, or "m" to build a
437 dynamically linked module called "amd5536udc" and force all
438 gadget drivers to also be dynamically linked.
440 config USB_AMD5536UDC
442 depends on USB_GADGET_AMD5536UDC
444 select USB_GADGET_SELECTED
446 config USB_GADGET_FSL_QE
447 boolean "Freescale QE/CPM USB Device Controller"
448 depends on FSL_SOC && (QUICC_ENGINE || CPM)
450 Some of Freescale PowerPC processors have a Full Speed
451 QE/CPM2 USB controller, which support device mode with 4
452 programmable endpoints. This driver supports the
453 controller in the MPC8360 and MPC8272, and should work with
454 controllers having QE or CPM2, given minor tweaks.
456 Set CONFIG_USB_GADGET to "m" to build this driver as a
457 dynamically linked module called "fsl_qe_udc".
461 depends on USB_GADGET_FSL_QE
463 select USB_GADGET_SELECTED
465 config USB_GADGET_CI13XXX_PCI
466 boolean "MIPS USB CI13xxx PCI UDC"
468 select USB_GADGET_DUALSPEED
470 MIPS USB IP core family device controller
471 Currently it only supports IP part number CI13412
473 Say "y" to link the driver statically, or "m" to build a
474 dynamically linked module called "ci13xxx_udc" and force all
475 gadget drivers to also be dynamically linked.
477 config USB_CI13XXX_PCI
479 depends on USB_GADGET_CI13XXX_PCI
481 select USB_GADGET_SELECTED
483 config USB_GADGET_NET2280
484 boolean "NetChip 228x"
486 select USB_GADGET_DUALSPEED
488 NetChip 2280 / 2282 is a PCI based USB peripheral controller which
489 supports both full and high speed USB 2.0 data transfers.
491 It has six configurable endpoints, as well as endpoint zero
492 (for control transfers) and several endpoints with dedicated
495 Say "y" to link the driver statically, or "m" to build a
496 dynamically linked module called "net2280" and force all
497 gadget drivers to also be dynamically linked.
501 depends on USB_GADGET_NET2280
503 select USB_GADGET_SELECTED
505 config USB_GADGET_GOKU
506 boolean "Toshiba TC86C001 'Goku-S'"
509 The Toshiba TC86C001 is a PCI device which includes controllers
510 for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
512 The device controller has three configurable (bulk or interrupt)
513 endpoints, plus endpoint zero (for control transfers).
515 Say "y" to link the driver statically, or "m" to build a
516 dynamically linked module called "goku_udc" and to force all
517 gadget drivers to also be dynamically linked.
521 depends on USB_GADGET_GOKU
523 select USB_GADGET_SELECTED
525 config USB_GADGET_LANGWELL
526 boolean "Intel Langwell USB Device Controller"
528 select USB_GADGET_DUALSPEED
530 Intel Langwell USB Device Controller is a High-Speed USB
531 On-The-Go device controller.
533 The number of programmable endpoints is different through
536 Say "y" to link the driver statically, or "m" to build a
537 dynamically linked module called "langwell_udc" and force all
538 gadget drivers to also be dynamically linked.
542 depends on USB_GADGET_LANGWELL
544 select USB_GADGET_SELECTED
546 config USB_GADGET_EG20T
547 boolean "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH UDC"
549 select USB_GADGET_DUALSPEED
551 This is a USB device driver for EG20T PCH.
552 EG20T PCH is the platform controller hub that is used in Intel's
553 general embedded platform. EG20T PCH has USB device interface.
554 Using this interface, it is able to access system devices connected
556 This driver enables USB device function.
557 USB device is a USB peripheral controller which
558 supports both full and high speed USB 2.0 data transfers.
559 This driver supports both control transfer and bulk transfer modes.
560 This driver dose not support interrupt transfer or isochronous
563 This driver also can be used for OKI SEMICONDUCTOR's ML7213 which is
564 for IVI(In-Vehicle Infotainment) use.
565 ML7213 is companion chip for Intel Atom E6xx series.
566 ML7213 is completely compatible for Intel EG20T PCH.
570 depends on USB_GADGET_EG20T
572 select USB_GADGET_SELECTED
574 config USB_GADGET_CI13XXX_MSM
575 boolean "MIPS USB CI13xxx for MSM"
577 select USB_GADGET_DUALSPEED
580 MSM SoC has chipidea USB controller. This driver uses
582 This driver depends on OTG driver for PHY initialization,
583 clock management, powering up VBUS, and power management.
584 This driver is not supported on boards like trout which
587 Say "y" to link the driver statically, or "m" to build a
588 dynamically linked module called "ci13xxx_msm" and force all
589 gadget drivers to also be dynamically linked.
591 config USB_CI13XXX_MSM
593 depends on USB_GADGET_CI13XXX_MSM
595 select USB_GADGET_SELECTED
598 # LAST -- dummy/emulated controller
601 config USB_GADGET_DUMMY_HCD
602 boolean "Dummy HCD (DEVELOPMENT)"
603 depends on USB=y || (USB=m && USB_GADGET=m)
604 select USB_GADGET_DUALSPEED
606 This host controller driver emulates USB, looping all data transfer
607 requests back to a USB "gadget driver" in the same host. The host
608 side is the master; the gadget side is the slave. Gadget drivers
609 can be high, full, or low speed; and they have access to endpoints
610 like those from NET2280, PXA2xx, or SA1100 hardware.
612 This may help in some stages of creating a driver to embed in a
613 Linux device, since it lets you debug several parts of the gadget
614 driver without its hardware or drivers being involved.
616 Since such a gadget side driver needs to interoperate with a host
617 side Linux-USB device driver, this may help to debug both sides
618 of a USB protocol stack.
620 Say "y" to link the driver statically, or "m" to build a
621 dynamically linked module called "dummy_hcd" and force all
622 gadget drivers to also be dynamically linked.
626 depends on USB_GADGET_DUMMY_HCD
628 select USB_GADGET_SELECTED
630 # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
631 # first and will be selected by default.
635 config USB_GADGET_DUALSPEED
637 depends on USB_GADGET
640 Means that gadget drivers should include extra descriptors
641 and code to handle dual-speed controllers.
647 tristate "USB Gadget Drivers"
648 depends on USB_GADGET && USB_GADGET_SELECTED
651 A Linux "Gadget Driver" talks to the USB Peripheral Controller
652 driver through the abstract "gadget" API. Some other operating
653 systems call these "client" drivers, of which "class drivers"
654 are a subset (implementing a USB device class specification).
655 A gadget driver implements one or more USB functions using
656 the peripheral hardware.
658 Gadget drivers are hardware-neutral, or "platform independent",
659 except that they sometimes must understand quirks or limitations
660 of the particular controllers they work with. For example, when
661 a controller doesn't support alternate configurations or provide
662 enough of the right types of endpoints, the gadget driver might
663 not be able work with that controller, or might need to implement
664 a less common variant of a device class protocol.
666 # this first set of drivers all depend on bulk-capable hardware.
669 tristate "Gadget Zero (DEVELOPMENT)"
671 Gadget Zero is a two-configuration device. It either sinks and
672 sources bulk data; or it loops back a configurable number of
673 transfers. It also implements control requests, for "chapter 9"
674 conformance. The driver needs only two bulk-capable endpoints, so
675 it can work on top of most device-side usb controllers. It's
676 useful for testing, and is also a working example showing how
677 USB "gadget drivers" can be written.
679 Make this be the first driver you try using on top of any new
680 USB peripheral controller driver. Then you can use host-side
681 test software, like the "usbtest" driver, to put your hardware
682 and its driver through a basic set of functional tests.
684 Gadget Zero also works with the host-side "usb-skeleton" driver,
685 and with many kinds of host-side test software. You may need
686 to tweak product and vendor IDs before host software knows about
687 this device, and arrange to select an appropriate configuration.
689 Say "y" to link the driver statically, or "m" to build a
690 dynamically linked module called "g_zero".
692 config USB_ZERO_HNPTEST
693 boolean "HNP Test Device"
694 depends on USB_ZERO && USB_OTG
696 You can configure this device to enumerate using the device
697 identifiers of the USB-OTG test device. That means that when
698 this gadget connects to another OTG device, with this one using
699 the "B-Peripheral" role, that device will use HNP to let this
700 one serve as the USB host instead (in the "B-Host" role).
703 tristate "Audio Gadget (EXPERIMENTAL)"
707 Gadget Audio is compatible with USB Audio Class specification 1.0.
708 It will include at least one AudioControl interface, zero or more
709 AudioStream interface and zero or more MIDIStream interface.
711 Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to
712 playback or capture audio stream.
714 Say "y" to link the driver statically, or "m" to build a
715 dynamically linked module called "g_audio".
718 tristate "Ethernet Gadget (with CDC Ethernet support)"
722 This driver implements Ethernet style communication, in one of
725 - The "Communication Device Class" (CDC) Ethernet Control Model.
726 That protocol is often avoided with pure Ethernet adapters, in
727 favor of simpler vendor-specific hardware, but is widely
728 supported by firmware for smart network devices.
730 - On hardware can't implement that protocol, a simple CDC subset
731 is used, placing fewer demands on USB.
733 - CDC Ethernet Emulation Model (EEM) is a newer standard that has
734 a simpler interface that can be used by more USB hardware.
736 RNDIS support is an additional option, more demanding than than
739 Within the USB device, this gadget driver exposes a network device
740 "usbX", where X depends on what other networking devices you have.
741 Treat it like a two-node Ethernet link: host, and gadget.
743 The Linux-USB host-side "usbnet" driver interoperates with this
744 driver, so that deep I/O queues can be supported. On 2.4 kernels,
745 use "CDCEther" instead, if you're using the CDC option. That CDC
746 mode should also interoperate with standard CDC Ethernet class
747 drivers on other host operating systems.
749 Say "y" to link the driver statically, or "m" to build a
750 dynamically linked module called "g_ether".
757 Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
758 and Microsoft provides redistributable binary RNDIS drivers for
759 older versions of Windows.
761 If you say "y" here, the Ethernet gadget driver will try to provide
762 a second device configuration, supporting RNDIS to talk to such
765 To make MS-Windows work with this, use Documentation/usb/linux.inf
766 as the "driver info file". For versions of MS-Windows older than
767 XP, you'll need to download drivers from Microsoft's website; a URL
768 is given in comments found in that info file.
771 bool "Ethernet Emulation Model (EEM) support"
775 CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
776 and therefore can be supported by more hardware. Technically ECM and
777 EEM are designed for different applications. The ECM model extends
778 the network interface to the target (e.g. a USB cable modem), and the
779 EEM model is for mobile devices to communicate with hosts using
780 ethernet over USB. For Linux gadgets, however, the interface with
781 the host is the same (a usbX device), so the differences are minimal.
783 If you say "y" here, the Ethernet gadget driver will use the EEM
784 protocol rather than ECM. If unsure, say "n".
787 tristate "Network Control Model (NCM) support"
791 This driver implements USB CDC NCM subclass standard. NCM is
792 an advanced protocol for Ethernet encapsulation, allows grouping
793 of several ethernet frames into one USB transfer and diffferent
794 alignment possibilities.
796 Say "y" to link the driver statically, or "m" to build a
797 dynamically linked module called "g_ncm".
800 tristate "Gadget Filesystem (EXPERIMENTAL)"
801 depends on EXPERIMENTAL
803 This driver provides a filesystem based API that lets user mode
804 programs implement a single-configuration USB device, including
805 endpoint I/O and control requests that don't relate to enumeration.
806 All endpoints, transfer speeds, and transfer types supported by
807 the hardware are available, through read() and write() calls.
809 Currently, this option is still labelled as EXPERIMENTAL because
810 of existing race conditions in the underlying in-kernel AIO core.
812 Say "y" to link the driver statically, or "m" to build a
813 dynamically linked module called "gadgetfs".
815 config USB_FUNCTIONFS
816 tristate "Function Filesystem (EXPERIMENTAL)"
817 depends on EXPERIMENTAL
818 select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
820 The Function Filesystem (FunctionFS) lets one create USB
821 composite functions in user space in the same way GadgetFS
822 lets one create USB gadgets in user space. This allows creation
823 of composite gadgets such that some of the functions are
824 implemented in kernel space (for instance Ethernet, serial or
825 mass storage) and other are implemented in user space.
827 If you say "y" or "m" here you will be able what kind of
828 configurations the gadget will provide.
830 Say "y" to link the driver statically, or "m" to build
831 a dynamically linked module called "g_ffs".
833 config USB_FUNCTIONFS_ETH
834 bool "Include configuration with CDC ECM (Ethernet)"
835 depends on USB_FUNCTIONFS && NET
837 Include a configuration with CDC ECM function (Ethernet) and the
840 config USB_FUNCTIONFS_RNDIS
841 bool "Include configuration with RNDIS (Ethernet)"
842 depends on USB_FUNCTIONFS && NET
844 Include a configuration with RNDIS function (Ethernet) and the Filesystem.
846 config USB_FUNCTIONFS_GENERIC
847 bool "Include 'pure' configuration"
848 depends on USB_FUNCTIONFS
850 Include a configuration with the Function Filesystem alone with
851 no Ethernet interface.
853 config USB_FILE_STORAGE
854 tristate "File-backed Storage Gadget"
857 The File-backed Storage Gadget acts as a USB Mass Storage
858 disk drive. As its storage repository it can use a regular
859 file or a block device (in much the same way as the "loop"
860 device driver), specified as a module parameter.
862 Say "y" to link the driver statically, or "m" to build a
863 dynamically linked module called "g_file_storage".
865 config USB_FILE_STORAGE_TEST
866 bool "File-backed Storage Gadget testing version"
867 depends on USB_FILE_STORAGE
870 Say "y" to generate the larger testing version of the
871 File-backed Storage Gadget, useful for probing the
872 behavior of USB Mass Storage hosts. Not needed for
875 config USB_MASS_STORAGE
876 tristate "Mass Storage Gadget"
879 The Mass Storage Gadget acts as a USB Mass Storage disk drive.
880 As its storage repository it can use a regular file or a block
881 device (in much the same way as the "loop" device driver),
882 specified as a module parameter or sysfs option.
884 This is heavily based on File-backed Storage Gadget and in most
885 cases you will want to use FSG instead. This gadget is mostly
886 here to test the functionality of the Mass Storage Function
887 which may be used with composite framework.
889 Say "y" to link the driver statically, or "m" to build
890 a dynamically linked module called "g_mass_storage". If unsure,
891 consider File-backed Storage Gadget.
894 tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
896 The Serial Gadget talks to the Linux-USB generic serial driver.
897 This driver supports a CDC-ACM module option, which can be used
898 to interoperate with MS-Windows hosts or with the Linux-USB
901 This driver also supports a CDC-OBEX option. You will need a
902 user space OBEX server talking to /dev/ttyGS*, since the kernel
903 itself doesn't implement the OBEX protocol.
905 Say "y" to link the driver statically, or "m" to build a
906 dynamically linked module called "g_serial".
908 For more information, see Documentation/usb/gadget_serial.txt
909 which includes instructions and a "driver info file" needed to
910 make MS-Windows work with CDC ACM.
912 config USB_MIDI_GADGET
913 tristate "MIDI Gadget (EXPERIMENTAL)"
914 depends on SND && EXPERIMENTAL
917 The MIDI Gadget acts as a USB Audio device, with one MIDI
918 input and one MIDI output. These MIDI jacks appear as
919 a sound "card" in the ALSA sound system. Other MIDI
920 connections can then be made on the gadget system, using
921 ALSA's aconnect utility etc.
923 Say "y" to link the driver statically, or "m" to build a
924 dynamically linked module called "g_midi".
927 tristate "Printer Gadget"
929 The Printer Gadget channels data between the USB host and a
930 userspace program driving the print engine. The user space
931 program reads and writes the device file /dev/g_printer to
932 receive or send printer data. It can use ioctl calls to
933 the device file to get or set printer status.
935 Say "y" to link the driver statically, or "m" to build a
936 dynamically linked module called "g_printer".
938 For more information, see Documentation/usb/gadget_printer.txt
939 which includes sample code for accessing the device file.
941 config USB_CDC_COMPOSITE
942 tristate "CDC Composite Device (Ethernet and ACM)"
945 This driver provides two functions in one configuration:
946 a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link.
948 This driver requires four bulk and two interrupt endpoints,
949 plus the ability to handle altsettings. Not all peripheral
950 controllers are that capable.
952 Say "y" to link the driver statically, or "m" to build a
953 dynamically linked module.
956 tristate "Nokia composite gadget"
959 The Nokia composite gadget provides support for acm, obex
960 and phonet in only one composite gadget driver.
962 It's only really useful for N900 hardware. If you're building
963 a kernel for N900, say Y or M here. If unsure, say N.
966 tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
967 depends on BLOCK && NET
968 select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
970 The Multifunction Composite Gadget provides Ethernet (RNDIS
971 and/or CDC Ethernet), mass storage and ACM serial link
974 You will be asked to choose which of the two configurations is
975 to be available in the gadget. At least one configuration must
976 be chosen to make the gadget usable. Selecting more than one
977 configuration will prevent Windows from automatically detecting
978 the gadget as a composite gadget, so an INF file will be needed to
981 Say "y" to link the driver statically, or "m" to build a
982 dynamically linked module called "g_multi".
984 config USB_G_MULTI_RNDIS
985 bool "RNDIS + CDC Serial + Storage configuration"
986 depends on USB_G_MULTI
989 This option enables a configuration with RNDIS, CDC Serial and
990 Mass Storage functions available in the Multifunction Composite
991 Gadget. This is the configuration dedicated for Windows since RNDIS
992 is Microsoft's protocol.
996 config USB_G_MULTI_CDC
997 bool "CDC Ethernet + CDC Serial + Storage configuration"
998 depends on USB_G_MULTI
1001 This option enables a configuration with CDC Ethernet (ECM), CDC
1002 Serial and Mass Storage functions available in the Multifunction
1008 tristate "HID Gadget"
1010 The HID gadget driver provides generic emulation of USB
1011 Human Interface Devices (HID).
1013 For more information, see Documentation/usb/gadget_hid.txt which
1014 includes sample code for accessing the device files.
1016 Say "y" to link the driver statically, or "m" to build a
1017 dynamically linked module called "g_hid".
1020 tristate "EHCI Debug Device Gadget"
1022 This gadget emulates an EHCI Debug device. This is useful when you want
1023 to interact with an EHCI Debug Port.
1025 Say "y" to link the driver statically, or "m" to build a
1026 dynamically linked module called "g_dbgp".
1030 prompt "EHCI Debug Device mode"
1031 default USB_G_DBGP_SERIAL
1033 config USB_G_DBGP_PRINTK
1034 depends on USB_G_DBGP
1037 Directly printk() received data. No interaction.
1039 config USB_G_DBGP_SERIAL
1040 depends on USB_G_DBGP
1043 Userland can interact using /dev/ttyGSxxx.
1047 # put drivers that need isochronous transfer support (for audio
1048 # or video class gadget drivers), or specific hardware, here.
1050 tristate "USB Webcam Gadget"
1051 depends on VIDEO_DEV
1053 The Webcam Gadget acts as a composite USB Audio and Video Class
1054 device. It provides a userspace API to process UVC control requests
1055 and stream video data to the host.
1057 Say "y" to link the driver statically, or "m" to build a
1058 dynamically linked module called "g_webcam".