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
162 Some of Freescale PowerPC processors have a High Speed
163 Dual-Role(DR) USB controller, which supports device mode.
165 The number of programmable endpoints is different through
168 Say "y" to link the driver statically, or "m" to build a
169 dynamically linked module called "fsl_usb2_udc" and force
170 all gadget drivers to also be dynamically linked.
174 depends on USB_GADGET_FSL_USB2
176 select USB_GADGET_SELECTED
178 config USB_GADGET_LH7A40X
180 depends on ARCH_LH7A40X
182 This driver provides USB Device Controller driver for LH7A40x
186 depends on USB_GADGET_LH7A40X
188 select USB_GADGET_SELECTED
190 config USB_GADGET_OMAP
191 boolean "OMAP USB Device Controller"
193 select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
194 select USB_OTG_UTILS if ARCH_OMAP
196 Many Texas Instruments OMAP processors have flexible full
197 speed USB device controllers, with support for up to 30
198 endpoints (plus endpoint zero). This driver supports the
199 controller in the OMAP 1611, and should work with controllers
200 in other OMAP processors too, given minor tweaks.
202 Say "y" to link the driver statically, or "m" to build a
203 dynamically linked module called "omap_udc" and force all
204 gadget drivers to also be dynamically linked.
208 depends on USB_GADGET_OMAP
210 select USB_GADGET_SELECTED
213 boolean "OTG Support"
214 depends on USB_GADGET_OMAP && ARCH_OMAP_OTG && USB_OHCI_HCD
216 The most notable feature of USB OTG is support for a
217 "Dual-Role" device, which can act as either a device
218 or a host. The initial role choice can be changed
219 later, when two dual-role devices talk to each other.
221 Select this only if your OMAP board has a Mini-AB connector.
223 config USB_GADGET_PXA25X
224 boolean "PXA 25x or IXP 4xx"
225 depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
228 Intel's PXA 25x series XScale ARM-5TE processors include
229 an integrated full speed USB 1.1 device controller. The
230 controller in the IXP 4xx series is register-compatible.
232 It has fifteen fixed-function endpoints, as well as endpoint
233 zero (for control transfers).
235 Say "y" to link the driver statically, or "m" to build a
236 dynamically linked module called "pxa25x_udc" and force all
237 gadget drivers to also be dynamically linked.
241 depends on USB_GADGET_PXA25X
243 select USB_GADGET_SELECTED
245 # if there's only one gadget driver, using only two bulk endpoints,
246 # don't waste memory for the other endpoints
247 config USB_PXA25X_SMALL
248 depends on USB_GADGET_PXA25X
250 default n if USB_ETH_RNDIS
251 default y if USB_ZERO
253 default y if USB_G_SERIAL
255 config USB_GADGET_R8A66597
256 boolean "Renesas R8A66597 USB Peripheral Controller"
257 select USB_GADGET_DUALSPEED
259 R8A66597 is a discrete USB host and peripheral controller chip that
260 supports both full and high speed USB 2.0 data transfers.
261 It has nine configurable endpoints, and endpoint zero.
263 Say "y" to link the driver statically, or "m" to build a
264 dynamically linked module called "r8a66597_udc" and force all
265 gadget drivers to also be dynamically linked.
269 depends on USB_GADGET_R8A66597
271 select USB_GADGET_SELECTED
273 config USB_GADGET_PXA27X
275 depends on ARCH_PXA && (PXA27x || PXA3xx)
278 Intel's PXA 27x series XScale ARM v5TE processors include
279 an integrated full speed USB 1.1 device controller.
281 It has up to 23 endpoints, as well as endpoint zero (for
284 Say "y" to link the driver statically, or "m" to build a
285 dynamically linked module called "pxa27x_udc" and force all
286 gadget drivers to also be dynamically linked.
290 depends on USB_GADGET_PXA27X
292 select USB_GADGET_SELECTED
294 config USB_GADGET_S3C_HSOTG
295 boolean "S3C HS/OtG USB Device controller"
296 depends on S3C_DEV_USB_HSOTG
297 select USB_GADGET_S3C_HSOTG_PIO
298 select USB_GADGET_DUALSPEED
300 The Samsung S3C64XX USB2.0 high-speed gadget controller
301 integrated into the S3C64XX series SoC.
305 depends on USB_GADGET_S3C_HSOTG
307 select USB_GADGET_SELECTED
309 config USB_GADGET_IMX
310 boolean "Freescale IMX USB Peripheral Controller"
313 Freescale's IMX series include an integrated full speed
314 USB 1.1 device controller. The controller in the IMX series
315 is register-compatible.
317 It has Six fixed-function endpoints, as well as endpoint
318 zero (for control transfers).
320 Say "y" to link the driver statically, or "m" to build a
321 dynamically linked module called "imx_udc" and force all
322 gadget drivers to also be dynamically linked.
326 depends on USB_GADGET_IMX
328 select USB_GADGET_SELECTED
330 config USB_GADGET_S3C2410
331 boolean "S3C2410 USB Device Controller"
332 depends on ARCH_S3C2410
334 Samsung's S3C2410 is an ARM-4 processor with an integrated
335 full speed USB 1.1 device controller. It has 4 configurable
336 endpoints, as well as endpoint zero (for control transfers).
338 This driver has been tested on the S3C2410, S3C2412, and
343 depends on USB_GADGET_S3C2410
345 select USB_GADGET_SELECTED
347 config USB_S3C2410_DEBUG
348 boolean "S3C2410 udc debug messages"
349 depends on USB_GADGET_S3C2410
352 # Controllers available in both integrated and discrete versions
355 # musb builds in ../musb along with host support
356 config USB_GADGET_MUSB_HDRC
357 boolean "Inventra HDRC USB Peripheral (TI, ADI, ...)"
358 depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
359 select USB_GADGET_DUALSPEED
360 select USB_GADGET_SELECTED
362 This OTG-capable silicon IP is used in dual designs including
363 the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
365 config USB_GADGET_M66592
366 boolean "Renesas M66592 USB Peripheral Controller"
367 select USB_GADGET_DUALSPEED
369 M66592 is a discrete USB peripheral controller chip that
370 supports both full and high speed USB 2.0 data transfers.
371 It has seven configurable endpoints, and endpoint zero.
373 Say "y" to link the driver statically, or "m" to build a
374 dynamically linked module called "m66592_udc" and force all
375 gadget drivers to also be dynamically linked.
379 depends on USB_GADGET_M66592
381 select USB_GADGET_SELECTED
384 # Controllers available only in discrete form (and all PCI controllers)
387 config USB_GADGET_AMD5536UDC
388 boolean "AMD5536 UDC"
390 select USB_GADGET_DUALSPEED
392 The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
393 It is a USB Highspeed DMA capable USB device controller. Beside ep0
394 it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
395 The UDC port supports OTG operation, and may be used as a host port
396 if it's not being used to implement peripheral or OTG roles.
398 Say "y" to link the driver statically, or "m" to build a
399 dynamically linked module called "amd5536udc" and force all
400 gadget drivers to also be dynamically linked.
402 config USB_AMD5536UDC
404 depends on USB_GADGET_AMD5536UDC
406 select USB_GADGET_SELECTED
408 config USB_GADGET_FSL_QE
409 boolean "Freescale QE/CPM USB Device Controller"
410 depends on FSL_SOC && (QUICC_ENGINE || CPM)
412 Some of Freescale PowerPC processors have a Full Speed
413 QE/CPM2 USB controller, which support device mode with 4
414 programmable endpoints. This driver supports the
415 controller in the MPC8360 and MPC8272, and should work with
416 controllers having QE or CPM2, given minor tweaks.
418 Set CONFIG_USB_GADGET to "m" to build this driver as a
419 dynamically linked module called "fsl_qe_udc".
423 depends on USB_GADGET_FSL_QE
425 select USB_GADGET_SELECTED
427 config USB_GADGET_CI13XXX
428 boolean "MIPS USB CI13xxx"
430 select USB_GADGET_DUALSPEED
432 MIPS USB IP core family device controller
433 Currently it only supports IP part number CI13412
435 Say "y" to link the driver statically, or "m" to build a
436 dynamically linked module called "ci13xxx_udc" and force all
437 gadget drivers to also be dynamically linked.
441 depends on USB_GADGET_CI13XXX
443 select USB_GADGET_SELECTED
445 config USB_GADGET_NET2280
446 boolean "NetChip 228x"
448 select USB_GADGET_DUALSPEED
450 NetChip 2280 / 2282 is a PCI based USB peripheral controller which
451 supports both full and high speed USB 2.0 data transfers.
453 It has six configurable endpoints, as well as endpoint zero
454 (for control transfers) and several endpoints with dedicated
457 Say "y" to link the driver statically, or "m" to build a
458 dynamically linked module called "net2280" and force all
459 gadget drivers to also be dynamically linked.
463 depends on USB_GADGET_NET2280
465 select USB_GADGET_SELECTED
467 config USB_GADGET_GOKU
468 boolean "Toshiba TC86C001 'Goku-S'"
471 The Toshiba TC86C001 is a PCI device which includes controllers
472 for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
474 The device controller has three configurable (bulk or interrupt)
475 endpoints, plus endpoint zero (for control transfers).
477 Say "y" to link the driver statically, or "m" to build a
478 dynamically linked module called "goku_udc" and to force all
479 gadget drivers to also be dynamically linked.
483 depends on USB_GADGET_GOKU
485 select USB_GADGET_SELECTED
487 config USB_GADGET_LANGWELL
488 boolean "Intel Langwell USB Device Controller"
490 select USB_GADGET_DUALSPEED
492 Intel Langwell USB Device Controller is a High-Speed USB
493 On-The-Go device controller.
495 The number of programmable endpoints is different through
498 Say "y" to link the driver statically, or "m" to build a
499 dynamically linked module called "langwell_udc" and force all
500 gadget drivers to also be dynamically linked.
504 depends on USB_GADGET_LANGWELL
506 select USB_GADGET_SELECTED
510 # LAST -- dummy/emulated controller
513 config USB_GADGET_DUMMY_HCD
514 boolean "Dummy HCD (DEVELOPMENT)"
515 depends on USB=y || (USB=m && USB_GADGET=m)
516 select USB_GADGET_DUALSPEED
518 This host controller driver emulates USB, looping all data transfer
519 requests back to a USB "gadget driver" in the same host. The host
520 side is the master; the gadget side is the slave. Gadget drivers
521 can be high, full, or low speed; and they have access to endpoints
522 like those from NET2280, PXA2xx, or SA1100 hardware.
524 This may help in some stages of creating a driver to embed in a
525 Linux device, since it lets you debug several parts of the gadget
526 driver without its hardware or drivers being involved.
528 Since such a gadget side driver needs to interoperate with a host
529 side Linux-USB device driver, this may help to debug both sides
530 of a USB protocol stack.
532 Say "y" to link the driver statically, or "m" to build a
533 dynamically linked module called "dummy_hcd" and force all
534 gadget drivers to also be dynamically linked.
538 depends on USB_GADGET_DUMMY_HCD
540 select USB_GADGET_SELECTED
542 # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
543 # first and will be selected by default.
547 config USB_GADGET_DUALSPEED
549 depends on USB_GADGET
552 Means that gadget drivers should include extra descriptors
553 and code to handle dual-speed controllers.
559 tristate "USB Gadget Drivers"
560 depends on USB_GADGET && USB_GADGET_SELECTED
563 A Linux "Gadget Driver" talks to the USB Peripheral Controller
564 driver through the abstract "gadget" API. Some other operating
565 systems call these "client" drivers, of which "class drivers"
566 are a subset (implementing a USB device class specification).
567 A gadget driver implements one or more USB functions using
568 the peripheral hardware.
570 Gadget drivers are hardware-neutral, or "platform independent",
571 except that they sometimes must understand quirks or limitations
572 of the particular controllers they work with. For example, when
573 a controller doesn't support alternate configurations or provide
574 enough of the right types of endpoints, the gadget driver might
575 not be able work with that controller, or might need to implement
576 a less common variant of a device class protocol.
578 # this first set of drivers all depend on bulk-capable hardware.
581 tristate "Gadget Zero (DEVELOPMENT)"
583 Gadget Zero is a two-configuration device. It either sinks and
584 sources bulk data; or it loops back a configurable number of
585 transfers. It also implements control requests, for "chapter 9"
586 conformance. The driver needs only two bulk-capable endpoints, so
587 it can work on top of most device-side usb controllers. It's
588 useful for testing, and is also a working example showing how
589 USB "gadget drivers" can be written.
591 Make this be the first driver you try using on top of any new
592 USB peripheral controller driver. Then you can use host-side
593 test software, like the "usbtest" driver, to put your hardware
594 and its driver through a basic set of functional tests.
596 Gadget Zero also works with the host-side "usb-skeleton" driver,
597 and with many kinds of host-side test software. You may need
598 to tweak product and vendor IDs before host software knows about
599 this device, and arrange to select an appropriate configuration.
601 Say "y" to link the driver statically, or "m" to build a
602 dynamically linked module called "g_zero".
604 config USB_ZERO_HNPTEST
605 boolean "HNP Test Device"
606 depends on USB_ZERO && USB_OTG
608 You can configure this device to enumerate using the device
609 identifiers of the USB-OTG test device. That means that when
610 this gadget connects to another OTG device, with this one using
611 the "B-Peripheral" role, that device will use HNP to let this
612 one serve as the USB host instead (in the "B-Host" role).
615 tristate "Audio Gadget (EXPERIMENTAL)"
619 Gadget Audio is compatible with USB Audio Class specification 1.0.
620 It will include at least one AudioControl interface, zero or more
621 AudioStream interface and zero or more MIDIStream interface.
623 Gadget Audio will use on-board ALSA (CONFIG_SND) audio card to
624 playback or capture audio stream.
626 Say "y" to link the driver statically, or "m" to build a
627 dynamically linked module called "g_audio".
630 tristate "Ethernet Gadget (with CDC Ethernet support)"
634 This driver implements Ethernet style communication, in one of
637 - The "Communication Device Class" (CDC) Ethernet Control Model.
638 That protocol is often avoided with pure Ethernet adapters, in
639 favor of simpler vendor-specific hardware, but is widely
640 supported by firmware for smart network devices.
642 - On hardware can't implement that protocol, a simple CDC subset
643 is used, placing fewer demands on USB.
645 - CDC Ethernet Emulation Model (EEM) is a newer standard that has
646 a simpler interface that can be used by more USB hardware.
648 RNDIS support is an additional option, more demanding than than
651 Within the USB device, this gadget driver exposes a network device
652 "usbX", where X depends on what other networking devices you have.
653 Treat it like a two-node Ethernet link: host, and gadget.
655 The Linux-USB host-side "usbnet" driver interoperates with this
656 driver, so that deep I/O queues can be supported. On 2.4 kernels,
657 use "CDCEther" instead, if you're using the CDC option. That CDC
658 mode should also interoperate with standard CDC Ethernet class
659 drivers on other host operating systems.
661 Say "y" to link the driver statically, or "m" to build a
662 dynamically linked module called "g_ether".
669 Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
670 and Microsoft provides redistributable binary RNDIS drivers for
671 older versions of Windows.
673 If you say "y" here, the Ethernet gadget driver will try to provide
674 a second device configuration, supporting RNDIS to talk to such
677 To make MS-Windows work with this, use Documentation/usb/linux.inf
678 as the "driver info file". For versions of MS-Windows older than
679 XP, you'll need to download drivers from Microsoft's website; a URL
680 is given in comments found in that info file.
683 bool "Ethernet Emulation Model (EEM) support"
687 CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
688 and therefore can be supported by more hardware. Technically ECM and
689 EEM are designed for different applications. The ECM model extends
690 the network interface to the target (e.g. a USB cable modem), and the
691 EEM model is for mobile devices to communicate with hosts using
692 ethernet over USB. For Linux gadgets, however, the interface with
693 the host is the same (a usbX device), so the differences are minimal.
695 If you say "y" here, the Ethernet gadget driver will use the EEM
696 protocol rather than ECM. If unsure, say "n".
699 tristate "Gadget Filesystem (EXPERIMENTAL)"
700 depends on EXPERIMENTAL
702 This driver provides a filesystem based API that lets user mode
703 programs implement a single-configuration USB device, including
704 endpoint I/O and control requests that don't relate to enumeration.
705 All endpoints, transfer speeds, and transfer types supported by
706 the hardware are available, through read() and write() calls.
708 Currently, this option is still labelled as EXPERIMENTAL because
709 of existing race conditions in the underlying in-kernel AIO core.
711 Say "y" to link the driver statically, or "m" to build a
712 dynamically linked module called "gadgetfs".
714 config USB_FUNCTIONFS
715 tristate "Function Filesystem (EXPERIMENTAL)"
716 depends on EXPERIMENTAL
717 select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
719 The Function Filesystem (FunctioFS) lets one create USB
720 composite functions in user space in the same way as GadgetFS
721 lets one create USB gadgets in user space. This allows creation
722 of composite gadgets such that some of the functions are
723 implemented in kernel space (for instance Ethernet, serial or
724 mass storage) and other are implemented in user space.
726 If you say "y" or "m" here you will be able what kind of
727 configurations the gadget will provide.
729 Say "y" to link the driver statically, or "m" to build
730 a dynamically linked module called "g_ffs".
732 config USB_FUNCTIONFS_ETH
733 bool "Include configuration with CDC ECM (Ethernet)"
734 depends on USB_FUNCTIONFS && NET
736 Include a configuration with CDC ECM funcion (Ethernet) and the
739 config USB_FUNCTIONFS_RNDIS
740 bool "Include configuration with RNDIS (Ethernet)"
741 depends on USB_FUNCTIONFS && NET
743 Include a configuration with RNDIS funcion (Ethernet) and the Filesystem.
745 config USB_FUNCTIONFS_GENERIC
746 bool "Include 'pure' configuration"
747 depends on USB_FUNCTIONFS
749 Include a configuration with the Function Filesystem alone with
750 no Ethernet interface.
752 config USB_FILE_STORAGE
753 tristate "File-backed Storage Gadget"
756 The File-backed Storage Gadget acts as a USB Mass Storage
757 disk drive. As its storage repository it can use a regular
758 file or a block device (in much the same way as the "loop"
759 device driver), specified as a module parameter.
761 Say "y" to link the driver statically, or "m" to build a
762 dynamically linked module called "g_file_storage".
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 is heavily based on File-backed Storage Gadget and in most
784 cases you will want to use FSG instead. This gadget is mostly
785 here to test the functionality of the Mass Storage Function
786 which may be used with composite framework.
788 Say "y" to link the driver statically, or "m" to build
789 a dynamically linked module called "g_mass_storage". If unsure,
790 consider File-backed Storage Gadget.
793 tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
795 The Serial Gadget talks to the Linux-USB generic serial driver.
796 This driver supports a CDC-ACM module option, which can be used
797 to interoperate with MS-Windows hosts or with the Linux-USB
800 This driver also supports a CDC-OBEX option. You will need a
801 user space OBEX server talking to /dev/ttyGS*, since the kernel
802 itself doesn't implement the OBEX protocol.
804 Say "y" to link the driver statically, or "m" to build a
805 dynamically linked module called "g_serial".
807 For more information, see Documentation/usb/gadget_serial.txt
808 which includes instructions and a "driver info file" needed to
809 make MS-Windows work with CDC ACM.
811 config USB_MIDI_GADGET
812 tristate "MIDI Gadget (EXPERIMENTAL)"
813 depends on SND && EXPERIMENTAL
816 The MIDI Gadget acts as a USB Audio device, with one MIDI
817 input and one MIDI output. These MIDI jacks appear as
818 a sound "card" in the ALSA sound system. Other MIDI
819 connections can then be made on the gadget system, using
820 ALSA's aconnect utility etc.
822 Say "y" to link the driver statically, or "m" to build a
823 dynamically linked module called "g_midi".
826 tristate "Printer Gadget"
828 The Printer Gadget channels data between the USB host and a
829 userspace program driving the print engine. The user space
830 program reads and writes the device file /dev/g_printer to
831 receive or send printer data. It can use ioctl calls to
832 the device file to get or set printer status.
834 Say "y" to link the driver statically, or "m" to build a
835 dynamically linked module called "g_printer".
837 For more information, see Documentation/usb/gadget_printer.txt
838 which includes sample code for accessing the device file.
840 config USB_CDC_COMPOSITE
841 tristate "CDC Composite Device (Ethernet and ACM)"
844 This driver provides two functions in one configuration:
845 a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link.
847 This driver requires four bulk and two interrupt endpoints,
848 plus the ability to handle altsettings. Not all peripheral
849 controllers are that capable.
851 Say "y" to link the driver statically, or "m" to build a
852 dynamically linked module.
855 tristate "Nokia composite gadget"
858 The Nokia composite gadget provides support for acm, obex
859 and phonet in only one composite gadget driver.
861 It's only really useful for N900 hardware. If you're building
862 a kernel for N900, say Y or M here. If unsure, say N.
865 tristate "Multifunction Composite Gadget (EXPERIMENTAL)"
866 depends on BLOCK && NET
867 select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
869 The Multifunction Composite Gadget provides Ethernet (RNDIS
870 and/or CDC Ethernet), mass storage and ACM serial link
873 You will be asked to choose which of the two configurations is
874 to be available in the gadget. At least one configuration must
875 be chosen to make the gadget usable. Selecting more than one
876 configuration will prevent Windows from automatically detecting
877 the gadget as a composite gadget, so an INF file will be needed to
880 Say "y" to link the driver statically, or "m" to build a
881 dynamically linked module called "g_multi".
883 config USB_G_MULTI_RNDIS
884 bool "RNDIS + CDC Serial + Storage configuration"
885 depends on USB_G_MULTI
888 This option enables a configuration with RNDIS, CDC Serial and
889 Mass Storage functions available in the Multifunction Composite
890 Gadget. This is the configuration dedicated for Windows since RNDIS
891 is Microsoft's protocol.
895 config USB_G_MULTI_CDC
896 bool "CDC Ethernet + CDC Serial + Storage configuration"
897 depends on USB_G_MULTI
900 This option enables a configuration with CDC Ethernet (ECM), CDC
901 Serial and Mass Storage functions available in the Multifunction
907 tristate "HID Gadget"
909 The HID gadget driver provides generic emulation of USB
910 Human Interface Devices (HID).
912 For more information, see Documentation/usb/gadget_hid.txt which
913 includes sample code for accessing the device files.
915 Say "y" to link the driver statically, or "m" to build a
916 dynamically linked module called "g_hid".
919 tristate "EHCI Debug Device Gadget"
921 This gadget emulates an EHCI Debug device. This is useful when you want
922 to interact with an EHCI Debug Port.
924 Say "y" to link the driver statically, or "m" to build a
925 dynamically linked module called "g_dbgp".
929 prompt "EHCI Debug Device mode"
930 default USB_G_DBGP_SERIAL
932 config USB_G_DBGP_PRINTK
933 depends on USB_G_DBGP
936 Directly printk() received data. No interaction.
938 config USB_G_DBGP_SERIAL
939 depends on USB_G_DBGP
942 Userland can interact using /dev/ttyGSxxx.
946 # put drivers that need isochronous transfer support (for audio
947 # or video class gadget drivers), or specific hardware, here.
949 tristate "USB Webcam Gadget"
952 The Webcam Gadget acts as a composite USB Audio and Video Class
953 device. It provides a userspace API to process UVC control requests
954 and stream video data to the host.
956 Say "y" to link the driver statically, or "m" to build a
957 dynamically linked module called "g_webcam".