xref: /linux/drivers/usb/gadget/Kconfig (revision 70cc3c024640a3c60e91d04789f9574a371a2db5)
1#
2# USB Gadget support on a system involves
3#    (a) a peripheral controller, and
4#    (b) the gadget driver using it.
5#
6# NOTE:  Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
7#
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.
11#
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).
14#
15
16menuconfig USB_GADGET
17	tristate "USB Gadget Support"
18	select NLS
19	help
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.
24
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
31	   motherboards.
32
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.)
38
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).
41
42	   For more information, see <http://www.linux-usb.org/gadget> and
43	   the kernel DocBook documentation for this API.
44
45if USB_GADGET
46
47config USB_GADGET_DEBUG
48	boolean "Debugging messages (DEVELOPMENT)"
49	depends on DEBUG_KERNEL
50	help
51	   Many controller and gadget drivers will print some debugging
52	   messages if you use this option to ask for those messages.
53
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
59	   production build.
60
61config USB_GADGET_DEBUG_FILES
62	boolean "Debugging information files (DEVELOPMENT)"
63	depends on PROC_FS
64	help
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".
71
72config USB_GADGET_DEBUG_FS
73	boolean "Debugging information files in debugfs (DEVELOPMENT)"
74	depends on DEBUG_FS
75	help
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".
82
83config USB_GADGET_VBUS_DRAW
84	int "Maximum VBUS Power usage (2-500 mA)"
85	range 2 500
86	default 2
87	help
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.
92
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.
96
97	   This value will be used except for system-specific gadget
98	   drivers that have more specific information.
99
100config USB_GADGET_STORAGE_NUM_BUFFERS
101	int "Number of storage pipeline buffers"
102	range 2 4
103	default 2
104	help
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.
114	   If unsure, say 2.
115
116#
117# USB Peripheral Controller Support
118#
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.
125#
126menu "USB Peripheral Controller"
127
128#
129# Integrated controllers
130#
131
132config USB_AT91
133	tristate "Atmel AT91 USB Device Port"
134	depends on ARCH_AT91
135	help
136	   Many Atmel AT91 processors (such as the AT91RM2000) have a
137	   full speed USB Device Port with support for five configurable
138	   endpoints (plus endpoint zero).
139
140	   Say "y" to link the driver statically, or "m" to build a
141	   dynamically linked module called "at91_udc" and force all
142	   gadget drivers to also be dynamically linked.
143
144config USB_LPC32XX
145	tristate "LPC32XX USB Peripheral Controller"
146	depends on ARCH_LPC32XX
147	select USB_ISP1301
148	help
149	   This option selects the USB device controller in the LPC32xx SoC.
150
151	   Say "y" to link the driver statically, or "m" to build a
152	   dynamically linked module called "lpc32xx_udc" and force all
153	   gadget drivers to also be dynamically linked.
154
155config USB_ATMEL_USBA
156	tristate "Atmel USBA"
157	depends on AVR32 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
158	help
159	  USBA is the integrated high-speed USB Device controller on
160	  the AT32AP700x, some AT91SAM9 and AT91CAP9 processors from Atmel.
161
162config USB_BCM63XX_UDC
163	tristate "Broadcom BCM63xx Peripheral Controller"
164	depends on BCM63XX
165	help
166	   Many Broadcom BCM63xx chipsets (such as the BCM6328) have a
167	   high speed USB Device Port with support for four fixed endpoints
168	   (plus endpoint zero).
169
170	   Say "y" to link the driver statically, or "m" to build a
171	   dynamically linked module called "bcm63xx_udc".
172
173config USB_FSL_USB2
174	tristate "Freescale Highspeed USB DR Peripheral Controller"
175	depends on FSL_SOC || ARCH_MXC
176	select USB_FSL_MPH_DR_OF if OF
177	help
178	   Some of Freescale PowerPC and i.MX processors have a High Speed
179	   Dual-Role(DR) USB controller, which supports device mode.
180
181	   The number of programmable endpoints is different through
182	   SOC revisions.
183
184	   Say "y" to link the driver statically, or "m" to build a
185	   dynamically linked module called "fsl_usb2_udc" and force
186	   all gadget drivers to also be dynamically linked.
187
188config USB_FUSB300
189	tristate "Faraday FUSB300 USB Peripheral Controller"
190	depends on !PHYS_ADDR_T_64BIT
191	help
192	   Faraday usb device controller FUSB300 driver
193
194config USB_OMAP
195	tristate "OMAP USB Device Controller"
196	depends on ARCH_OMAP1
197	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG
198	help
199	   Many Texas Instruments OMAP processors have flexible full
200	   speed USB device controllers, with support for up to 30
201	   endpoints (plus endpoint zero).  This driver supports the
202	   controller in the OMAP 1611, and should work with controllers
203	   in other OMAP processors too, given minor tweaks.
204
205	   Say "y" to link the driver statically, or "m" to build a
206	   dynamically linked module called "omap_udc" and force all
207	   gadget drivers to also be dynamically linked.
208
209config USB_PXA25X
210	tristate "PXA 25x or IXP 4xx"
211	depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
212	help
213	   Intel's PXA 25x series XScale ARM-5TE processors include
214	   an integrated full speed USB 1.1 device controller.  The
215	   controller in the IXP 4xx series is register-compatible.
216
217	   It has fifteen fixed-function endpoints, as well as endpoint
218	   zero (for control transfers).
219
220	   Say "y" to link the driver statically, or "m" to build a
221	   dynamically linked module called "pxa25x_udc" and force all
222	   gadget drivers to also be dynamically linked.
223
224# if there's only one gadget driver, using only two bulk endpoints,
225# don't waste memory for the other endpoints
226config USB_PXA25X_SMALL
227	depends on USB_PXA25X
228	bool
229	default n if USB_ETH_RNDIS
230	default y if USB_ZERO
231	default y if USB_ETH
232	default y if USB_G_SERIAL
233
234config USB_R8A66597
235	tristate "Renesas R8A66597 USB Peripheral Controller"
236	help
237	   R8A66597 is a discrete USB host and peripheral controller chip that
238	   supports both full and high speed USB 2.0 data transfers.
239	   It has nine configurable endpoints, and endpoint zero.
240
241	   Say "y" to link the driver statically, or "m" to build a
242	   dynamically linked module called "r8a66597_udc" and force all
243	   gadget drivers to also be dynamically linked.
244
245config USB_RENESAS_USBHS_UDC
246	tristate 'Renesas USBHS controller'
247	depends on USB_RENESAS_USBHS
248	help
249	   Renesas USBHS is a discrete USB host and peripheral controller chip
250	   that supports both full and high speed USB 2.0 data transfers.
251	   It has nine or more configurable endpoints, and endpoint zero.
252
253	   Say "y" to link the driver statically, or "m" to build a
254	   dynamically linked module called "renesas_usbhs" and force all
255	   gadget drivers to also be dynamically linked.
256
257config USB_PXA27X
258	tristate "PXA 27x"
259	help
260	   Intel's PXA 27x series XScale ARM v5TE processors include
261	   an integrated full speed USB 1.1 device controller.
262
263	   It has up to 23 endpoints, as well as endpoint zero (for
264	   control transfers).
265
266	   Say "y" to link the driver statically, or "m" to build a
267	   dynamically linked module called "pxa27x_udc" and force all
268	   gadget drivers to also be dynamically linked.
269
270config USB_S3C_HSOTG
271	tristate "S3C HS/OtG USB Device controller"
272	depends on S3C_DEV_USB_HSOTG
273	help
274	  The Samsung S3C64XX USB2.0 high-speed gadget controller
275	  integrated into the S3C64XX series SoC.
276
277config USB_IMX
278	tristate "Freescale i.MX1 USB Peripheral Controller"
279	depends on ARCH_MXC
280	depends on BROKEN
281	help
282	   Freescale's i.MX1 includes an integrated full speed
283	   USB 1.1 device controller.
284
285	   It has Six fixed-function endpoints, as well as endpoint
286	   zero (for control transfers).
287
288	   Say "y" to link the driver statically, or "m" to build a
289	   dynamically linked module called "imx_udc" and force all
290	   gadget drivers to also be dynamically linked.
291
292config USB_S3C2410
293	tristate "S3C2410 USB Device Controller"
294	depends on ARCH_S3C24XX
295	help
296	  Samsung's S3C2410 is an ARM-4 processor with an integrated
297	  full speed USB 1.1 device controller.  It has 4 configurable
298	  endpoints, as well as endpoint zero (for control transfers).
299
300	  This driver has been tested on the S3C2410, S3C2412, and
301	  S3C2440 processors.
302
303config USB_S3C2410_DEBUG
304	boolean "S3C2410 udc debug messages"
305	depends on USB_S3C2410
306
307config USB_S3C_HSUDC
308	tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
309	depends on ARCH_S3C24XX
310	help
311	  Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
312	  integrated with dual speed USB 2.0 device controller. It has
313	  8 endpoints, as well as endpoint zero.
314
315	  This driver has been tested on S3C2416 and S3C2450 processors.
316
317config USB_MV_UDC
318	tristate "Marvell USB2.0 Device Controller"
319	depends on GENERIC_HARDIRQS
320	help
321	  Marvell Socs (including PXA and MMP series) include a high speed
322	  USB2.0 OTG controller, which can be configured as high speed or
323	  full speed USB peripheral.
324
325config USB_MV_U3D
326	tristate "MARVELL PXA2128 USB 3.0 controller"
327	help
328	  MARVELL PXA2128 Processor series include a super speed USB3.0 device
329	  controller, which support super speed USB peripheral.
330
331#
332# Controllers available in both integrated and discrete versions
333#
334
335# musb builds in ../musb along with host support
336config USB_GADGET_MUSB_HDRC
337	tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)"
338	depends on USB_MUSB_HDRC
339	help
340	  This OTG-capable silicon IP is used in dual designs including
341	  the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
342
343config USB_M66592
344	tristate "Renesas M66592 USB Peripheral Controller"
345	help
346	   M66592 is a discrete USB peripheral controller chip that
347	   supports both full and high speed USB 2.0 data transfers.
348	   It has seven configurable endpoints, and endpoint zero.
349
350	   Say "y" to link the driver statically, or "m" to build a
351	   dynamically linked module called "m66592_udc" and force all
352	   gadget drivers to also be dynamically linked.
353
354#
355# Controllers available only in discrete form (and all PCI controllers)
356#
357
358config USB_AMD5536UDC
359	tristate "AMD5536 UDC"
360	depends on PCI
361	help
362	   The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
363	   It is a USB Highspeed DMA capable USB device controller. Beside ep0
364	   it provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
365	   The UDC port supports OTG operation, and may be used as a host port
366	   if it's not being used to implement peripheral or OTG roles.
367
368	   Say "y" to link the driver statically, or "m" to build a
369	   dynamically linked module called "amd5536udc" and force all
370	   gadget drivers to also be dynamically linked.
371
372config USB_FSL_QE
373	tristate "Freescale QE/CPM USB Device Controller"
374	depends on FSL_SOC && (QUICC_ENGINE || CPM)
375	help
376	   Some of Freescale PowerPC processors have a Full Speed
377	   QE/CPM2 USB controller, which support device mode with 4
378	   programmable endpoints. This driver supports the
379	   controller in the MPC8360 and MPC8272, and should work with
380	   controllers having QE or CPM2, given minor tweaks.
381
382	   Set CONFIG_USB_GADGET to "m" to build this driver as a
383	   dynamically linked module called "fsl_qe_udc".
384
385config USB_NET2272
386	tristate "PLX NET2272"
387	help
388	  PLX NET2272 is a USB peripheral controller which supports
389	  both full and high speed USB 2.0 data transfers.
390
391	  It has three configurable endpoints, as well as endpoint zero
392	  (for control transfer).
393	  Say "y" to link the driver statically, or "m" to build a
394	  dynamically linked module called "net2272" and force all
395	  gadget drivers to also be dynamically linked.
396
397config USB_NET2272_DMA
398	boolean "Support external DMA controller"
399	depends on USB_NET2272
400	help
401	  The NET2272 part can optionally support an external DMA
402	  controller, but your board has to have support in the
403	  driver itself.
404
405	  If unsure, say "N" here.  The driver works fine in PIO mode.
406
407config USB_NET2280
408	tristate "NetChip 228x"
409	depends on PCI
410	help
411	   NetChip 2280 / 2282 is a PCI based USB peripheral controller which
412	   supports both full and high speed USB 2.0 data transfers.
413
414	   It has six configurable endpoints, as well as endpoint zero
415	   (for control transfers) and several endpoints with dedicated
416	   functions.
417
418	   Say "y" to link the driver statically, or "m" to build a
419	   dynamically linked module called "net2280" and force all
420	   gadget drivers to also be dynamically linked.
421
422config USB_GOKU
423	tristate "Toshiba TC86C001 'Goku-S'"
424	depends on PCI
425	help
426	   The Toshiba TC86C001 is a PCI device which includes controllers
427	   for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
428
429	   The device controller has three configurable (bulk or interrupt)
430	   endpoints, plus endpoint zero (for control transfers).
431
432	   Say "y" to link the driver statically, or "m" to build a
433	   dynamically linked module called "goku_udc" and to force all
434	   gadget drivers to also be dynamically linked.
435
436config USB_EG20T
437	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC"
438	depends on PCI && GENERIC_HARDIRQS
439	help
440	  This is a USB device driver for EG20T PCH.
441	  EG20T PCH is the platform controller hub that is used in Intel's
442	  general embedded platform. EG20T PCH has USB device interface.
443	  Using this interface, it is able to access system devices connected
444	  to USB device.
445	  This driver enables USB device function.
446	  USB device is a USB peripheral controller which
447	  supports both full and high speed USB 2.0 data transfers.
448	  This driver supports both control transfer and bulk transfer modes.
449	  This driver dose not support interrupt transfer or isochronous
450	  transfer modes.
451
452	  This driver also can be used for LAPIS Semiconductor's ML7213 which is
453	  for IVI(In-Vehicle Infotainment) use.
454	  ML7831 is for general purpose use.
455	  ML7213/ML7831 is companion chip for Intel Atom E6xx series.
456	  ML7213/ML7831 is completely compatible for Intel EG20T PCH.
457
458#
459# LAST -- dummy/emulated controller
460#
461
462config USB_DUMMY_HCD
463	tristate "Dummy HCD (DEVELOPMENT)"
464	depends on USB=y || (USB=m && USB_GADGET=m)
465	help
466	  This host controller driver emulates USB, looping all data transfer
467	  requests back to a USB "gadget driver" in the same host.  The host
468	  side is the master; the gadget side is the slave.  Gadget drivers
469	  can be high, full, or low speed; and they have access to endpoints
470	  like those from NET2280, PXA2xx, or SA1100 hardware.
471
472	  This may help in some stages of creating a driver to embed in a
473	  Linux device, since it lets you debug several parts of the gadget
474	  driver without its hardware or drivers being involved.
475
476	  Since such a gadget side driver needs to interoperate with a host
477	  side Linux-USB device driver, this may help to debug both sides
478	  of a USB protocol stack.
479
480	  Say "y" to link the driver statically, or "m" to build a
481	  dynamically linked module called "dummy_hcd" and force all
482	  gadget drivers to also be dynamically linked.
483
484# NOTE:  Please keep dummy_hcd LAST so that "real hardware" appears
485# first and will be selected by default.
486
487endmenu
488
489#
490# USB Gadget Drivers
491#
492
493# composite based drivers
494config USB_LIBCOMPOSITE
495	tristate
496	select CONFIGFS_FS
497	depends on USB_GADGET
498
499config USB_F_ACM
500	tristate
501
502config USB_F_SS_LB
503	tristate
504
505config USB_U_SERIAL
506	tristate
507
508config USB_F_SERIAL
509	tristate
510
511choice
512	tristate "USB Gadget Drivers"
513	default USB_ETH
514	help
515	  A Linux "Gadget Driver" talks to the USB Peripheral Controller
516	  driver through the abstract "gadget" API.  Some other operating
517	  systems call these "client" drivers, of which "class drivers"
518	  are a subset (implementing a USB device class specification).
519	  A gadget driver implements one or more USB functions using
520	  the peripheral hardware.
521
522	  Gadget drivers are hardware-neutral, or "platform independent",
523	  except that they sometimes must understand quirks or limitations
524	  of the particular controllers they work with.  For example, when
525	  a controller doesn't support alternate configurations or provide
526	  enough of the right types of endpoints, the gadget driver might
527	  not be able work with that controller, or might need to implement
528	  a less common variant of a device class protocol.
529
530# this first set of drivers all depend on bulk-capable hardware.
531
532config USB_ZERO
533	tristate "Gadget Zero (DEVELOPMENT)"
534	select USB_LIBCOMPOSITE
535	select USB_F_SS_LB
536	help
537	  Gadget Zero is a two-configuration device.  It either sinks and
538	  sources bulk data; or it loops back a configurable number of
539	  transfers.  It also implements control requests, for "chapter 9"
540	  conformance.  The driver needs only two bulk-capable endpoints, so
541	  it can work on top of most device-side usb controllers.  It's
542	  useful for testing, and is also a working example showing how
543	  USB "gadget drivers" can be written.
544
545	  Make this be the first driver you try using on top of any new
546	  USB peripheral controller driver.  Then you can use host-side
547	  test software, like the "usbtest" driver, to put your hardware
548	  and its driver through a basic set of functional tests.
549
550	  Gadget Zero also works with the host-side "usb-skeleton" driver,
551	  and with many kinds of host-side test software.  You may need
552	  to tweak product and vendor IDs before host software knows about
553	  this device, and arrange to select an appropriate configuration.
554
555	  Say "y" to link the driver statically, or "m" to build a
556	  dynamically linked module called "g_zero".
557
558config USB_ZERO_HNPTEST
559	boolean "HNP Test Device"
560	depends on USB_ZERO && USB_OTG
561	help
562	  You can configure this device to enumerate using the device
563	  identifiers of the USB-OTG test device.  That means that when
564	  this gadget connects to another OTG device, with this one using
565	  the "B-Peripheral" role, that device will use HNP to let this
566	  one serve as the USB host instead (in the "B-Host" role).
567
568config USB_AUDIO
569	tristate "Audio Gadget"
570	depends on SND
571	select USB_LIBCOMPOSITE
572	select SND_PCM
573	help
574	  This Gadget Audio driver is compatible with USB Audio Class
575	  specification 2.0. It implements 1 AudioControl interface,
576	  1 AudioStreaming Interface each for USB-OUT and USB-IN.
577	  Number of channels, sample rate and sample size can be
578	  specified as module parameters.
579	  This driver doesn't expect any real Audio codec to be present
580	  on the device - the audio streams are simply sinked to and
581	  sourced from a virtual ALSA sound card created. The user-space
582	  application may choose to do whatever it wants with the data
583	  received from the USB Host and choose to provide whatever it
584	  wants as audio data to the USB Host.
585
586	  Say "y" to link the driver statically, or "m" to build a
587	  dynamically linked module called "g_audio".
588
589config GADGET_UAC1
590	bool "UAC 1.0 (Legacy)"
591	depends on USB_AUDIO
592	help
593	  If you instead want older UAC Spec-1.0 driver that also has audio
594	  paths hardwired to the Audio codec chip on-board and doesn't work
595	  without one.
596
597config USB_ETH
598	tristate "Ethernet Gadget (with CDC Ethernet support)"
599	depends on NET
600	select USB_LIBCOMPOSITE
601	select CRC32
602	help
603	  This driver implements Ethernet style communication, in one of
604	  several ways:
605
606	   - The "Communication Device Class" (CDC) Ethernet Control Model.
607	     That protocol is often avoided with pure Ethernet adapters, in
608	     favor of simpler vendor-specific hardware, but is widely
609	     supported by firmware for smart network devices.
610
611	   - On hardware can't implement that protocol, a simple CDC subset
612	     is used, placing fewer demands on USB.
613
614	   - CDC Ethernet Emulation Model (EEM) is a newer standard that has
615	     a simpler interface that can be used by more USB hardware.
616
617	  RNDIS support is an additional option, more demanding than than
618	  subset.
619
620	  Within the USB device, this gadget driver exposes a network device
621	  "usbX", where X depends on what other networking devices you have.
622	  Treat it like a two-node Ethernet link:  host, and gadget.
623
624	  The Linux-USB host-side "usbnet" driver interoperates with this
625	  driver, so that deep I/O queues can be supported.  On 2.4 kernels,
626	  use "CDCEther" instead, if you're using the CDC option. That CDC
627	  mode should also interoperate with standard CDC Ethernet class
628	  drivers on other host operating systems.
629
630	  Say "y" to link the driver statically, or "m" to build a
631	  dynamically linked module called "g_ether".
632
633config USB_ETH_RNDIS
634	bool "RNDIS support"
635	depends on USB_ETH
636	select USB_LIBCOMPOSITE
637	default y
638	help
639	   Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
640	   and Microsoft provides redistributable binary RNDIS drivers for
641	   older versions of Windows.
642
643	   If you say "y" here, the Ethernet gadget driver will try to provide
644	   a second device configuration, supporting RNDIS to talk to such
645	   Microsoft USB hosts.
646
647	   To make MS-Windows work with this, use Documentation/usb/linux.inf
648	   as the "driver info file".  For versions of MS-Windows older than
649	   XP, you'll need to download drivers from Microsoft's website; a URL
650	   is given in comments found in that info file.
651
652config USB_ETH_EEM
653       bool "Ethernet Emulation Model (EEM) support"
654       depends on USB_ETH
655	select USB_LIBCOMPOSITE
656       default n
657       help
658         CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
659         and therefore can be supported by more hardware.  Technically ECM and
660         EEM are designed for different applications.  The ECM model extends
661         the network interface to the target (e.g. a USB cable modem), and the
662         EEM model is for mobile devices to communicate with hosts using
663         ethernet over USB.  For Linux gadgets, however, the interface with
664         the host is the same (a usbX device), so the differences are minimal.
665
666         If you say "y" here, the Ethernet gadget driver will use the EEM
667         protocol rather than ECM.  If unsure, say "n".
668
669config USB_G_NCM
670	tristate "Network Control Model (NCM) support"
671	depends on NET
672	select USB_LIBCOMPOSITE
673	select CRC32
674	help
675	  This driver implements USB CDC NCM subclass standard. NCM is
676	  an advanced protocol for Ethernet encapsulation, allows grouping
677	  of several ethernet frames into one USB transfer and different
678	  alignment possibilities.
679
680	  Say "y" to link the driver statically, or "m" to build a
681	  dynamically linked module called "g_ncm".
682
683config USB_GADGETFS
684	tristate "Gadget Filesystem"
685	help
686	  This driver provides a filesystem based API that lets user mode
687	  programs implement a single-configuration USB device, including
688	  endpoint I/O and control requests that don't relate to enumeration.
689	  All endpoints, transfer speeds, and transfer types supported by
690	  the hardware are available, through read() and write() calls.
691
692	  Say "y" to link the driver statically, or "m" to build a
693	  dynamically linked module called "gadgetfs".
694
695config USB_FUNCTIONFS
696	tristate "Function Filesystem"
697	select USB_LIBCOMPOSITE
698	select USB_FUNCTIONFS_GENERIC if !(USB_FUNCTIONFS_ETH || USB_FUNCTIONFS_RNDIS)
699	help
700	  The Function Filesystem (FunctionFS) lets one create USB
701	  composite functions in user space in the same way GadgetFS
702	  lets one create USB gadgets in user space.  This allows creation
703	  of composite gadgets such that some of the functions are
704	  implemented in kernel space (for instance Ethernet, serial or
705	  mass storage) and other are implemented in user space.
706
707	  If you say "y" or "m" here you will be able what kind of
708	  configurations the gadget will provide.
709
710	  Say "y" to link the driver statically, or "m" to build
711	  a dynamically linked module called "g_ffs".
712
713config USB_FUNCTIONFS_ETH
714	bool "Include configuration with CDC ECM (Ethernet)"
715	depends on USB_FUNCTIONFS && NET
716	help
717	  Include a configuration with CDC ECM function (Ethernet) and the
718	  Function Filesystem.
719
720config USB_FUNCTIONFS_RNDIS
721	bool "Include configuration with RNDIS (Ethernet)"
722	depends on USB_FUNCTIONFS && NET
723	help
724	  Include a configuration with RNDIS function (Ethernet) and the Filesystem.
725
726config USB_FUNCTIONFS_GENERIC
727	bool "Include 'pure' configuration"
728	depends on USB_FUNCTIONFS
729	help
730	  Include a configuration with the Function Filesystem alone with
731	  no Ethernet interface.
732
733config USB_MASS_STORAGE
734	tristate "Mass Storage Gadget"
735	depends on BLOCK
736	select USB_LIBCOMPOSITE
737	help
738	  The Mass Storage Gadget acts as a USB Mass Storage disk drive.
739	  As its storage repository it can use a regular file or a block
740	  device (in much the same way as the "loop" device driver),
741	  specified as a module parameter or sysfs option.
742
743	  This driver is a replacement for now removed File-backed
744	  Storage Gadget (g_file_storage).
745
746	  Say "y" to link the driver statically, or "m" to build
747	  a dynamically linked module called "g_mass_storage".
748
749config USB_GADGET_TARGET
750	tristate "USB Gadget Target Fabric Module"
751	depends on TARGET_CORE
752	select USB_LIBCOMPOSITE
753	help
754	  This fabric is an USB gadget. Two USB protocols are supported that is
755	  BBB or BOT (Bulk Only Transport) and UAS (USB Attached SCSI). BOT is
756	  advertised on alternative interface 0 (primary) and UAS is on
757	  alternative interface 1. Both protocols can work on USB2.0 and USB3.0.
758	  UAS utilizes the USB 3.0 feature called streams support.
759
760config USB_G_SERIAL
761	tristate "Serial Gadget (with CDC ACM and CDC OBEX support)"
762	depends on TTY
763	select USB_U_SERIAL
764	select USB_F_ACM
765	select USB_F_SERIAL
766	select USB_LIBCOMPOSITE
767	help
768	  The Serial Gadget talks to the Linux-USB generic serial driver.
769	  This driver supports a CDC-ACM module option, which can be used
770	  to interoperate with MS-Windows hosts or with the Linux-USB
771	  "cdc-acm" driver.
772
773	  This driver also supports a CDC-OBEX option.  You will need a
774	  user space OBEX server talking to /dev/ttyGS*, since the kernel
775	  itself doesn't implement the OBEX protocol.
776
777	  Say "y" to link the driver statically, or "m" to build a
778	  dynamically linked module called "g_serial".
779
780	  For more information, see Documentation/usb/gadget_serial.txt
781	  which includes instructions and a "driver info file" needed to
782	  make MS-Windows work with CDC ACM.
783
784config USB_MIDI_GADGET
785	tristate "MIDI Gadget"
786	depends on SND
787	select USB_LIBCOMPOSITE
788	select SND_RAWMIDI
789	help
790	  The MIDI Gadget acts as a USB Audio device, with one MIDI
791	  input and one MIDI output. These MIDI jacks appear as
792	  a sound "card" in the ALSA sound system. Other MIDI
793	  connections can then be made on the gadget system, using
794	  ALSA's aconnect utility etc.
795
796	  Say "y" to link the driver statically, or "m" to build a
797	  dynamically linked module called "g_midi".
798
799config USB_G_PRINTER
800	tristate "Printer Gadget"
801	select USB_LIBCOMPOSITE
802	help
803	  The Printer Gadget channels data between the USB host and a
804	  userspace program driving the print engine. The user space
805	  program reads and writes the device file /dev/g_printer to
806	  receive or send printer data. It can use ioctl calls to
807	  the device file to get or set printer status.
808
809	  Say "y" to link the driver statically, or "m" to build a
810	  dynamically linked module called "g_printer".
811
812	  For more information, see Documentation/usb/gadget_printer.txt
813	  which includes sample code for accessing the device file.
814
815if TTY
816
817config USB_CDC_COMPOSITE
818	tristate "CDC Composite Device (Ethernet and ACM)"
819	depends on NET
820	select USB_LIBCOMPOSITE
821	select USB_U_SERIAL
822	select USB_F_ACM
823	help
824	  This driver provides two functions in one configuration:
825	  a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link.
826
827	  This driver requires four bulk and two interrupt endpoints,
828	  plus the ability to handle altsettings.  Not all peripheral
829	  controllers are that capable.
830
831	  Say "y" to link the driver statically, or "m" to build a
832	  dynamically linked module.
833
834config USB_G_NOKIA
835	tristate "Nokia composite gadget"
836	depends on PHONET
837	select USB_LIBCOMPOSITE
838	select USB_U_SERIAL
839	select USB_F_ACM
840	help
841	  The Nokia composite gadget provides support for acm, obex
842	  and phonet in only one composite gadget driver.
843
844	  It's only really useful for N900 hardware. If you're building
845	  a kernel for N900, say Y or M here. If unsure, say N.
846
847config USB_G_ACM_MS
848	tristate "CDC Composite Device (ACM and mass storage)"
849	depends on BLOCK
850	select USB_LIBCOMPOSITE
851	select USB_U_SERIAL
852	select USB_F_ACM
853	help
854	  This driver provides two functions in one configuration:
855	  a mass storage, and a CDC ACM (serial port) link.
856
857	  Say "y" to link the driver statically, or "m" to build a
858	  dynamically linked module called "g_acm_ms".
859
860config USB_G_MULTI
861	tristate "Multifunction Composite Gadget"
862	depends on BLOCK && NET
863	select USB_G_MULTI_CDC if !USB_G_MULTI_RNDIS
864	select USB_LIBCOMPOSITE
865	select USB_U_SERIAL
866	select USB_F_ACM
867	help
868	  The Multifunction Composite Gadget provides Ethernet (RNDIS
869	  and/or CDC Ethernet), mass storage and ACM serial link
870	  interfaces.
871
872	  You will be asked to choose which of the two configurations is
873	  to be available in the gadget.  At least one configuration must
874	  be chosen to make the gadget usable.  Selecting more than one
875	  configuration will prevent Windows from automatically detecting
876	  the gadget as a composite gadget, so an INF file will be needed to
877	  use the gadget.
878
879	  Say "y" to link the driver statically, or "m" to build a
880	  dynamically linked module called "g_multi".
881
882config USB_G_MULTI_RNDIS
883	bool "RNDIS + CDC Serial + Storage configuration"
884	depends on USB_G_MULTI
885	default y
886	help
887	  This option enables a configuration with RNDIS, CDC Serial and
888	  Mass Storage functions available in the Multifunction Composite
889	  Gadget.  This is the configuration dedicated for Windows since RNDIS
890	  is Microsoft's protocol.
891
892	  If unsure, say "y".
893
894config USB_G_MULTI_CDC
895	bool "CDC Ethernet + CDC Serial + Storage configuration"
896	depends on USB_G_MULTI
897	default n
898	help
899	  This option enables a configuration with CDC Ethernet (ECM), CDC
900	  Serial and Mass Storage functions available in the Multifunction
901	  Composite Gadget.
902
903	  If unsure, say "y".
904
905endif # TTY
906
907config USB_G_HID
908	tristate "HID Gadget"
909	select USB_LIBCOMPOSITE
910	help
911	  The HID gadget driver provides generic emulation of USB
912	  Human Interface Devices (HID).
913
914	  For more information, see Documentation/usb/gadget_hid.txt which
915	  includes sample code for accessing the device files.
916
917	  Say "y" to link the driver statically, or "m" to build a
918	  dynamically linked module called "g_hid".
919
920# Standalone / single function gadgets
921config USB_G_DBGP
922	tristate "EHCI Debug Device Gadget"
923	depends on TTY
924	select USB_LIBCOMPOSITE
925	help
926	  This gadget emulates an EHCI Debug device. This is useful when you want
927	  to interact with an EHCI Debug Port.
928
929	  Say "y" to link the driver statically, or "m" to build a
930	  dynamically linked module called "g_dbgp".
931
932if USB_G_DBGP
933choice
934	prompt "EHCI Debug Device mode"
935	default USB_G_DBGP_SERIAL
936
937config USB_G_DBGP_PRINTK
938	depends on USB_G_DBGP
939	bool "printk"
940	help
941	  Directly printk() received data. No interaction.
942
943config USB_G_DBGP_SERIAL
944	depends on USB_G_DBGP
945	select USB_U_SERIAL
946	bool "serial"
947	help
948	  Userland can interact using /dev/ttyGSxxx.
949endchoice
950endif
951
952# put drivers that need isochronous transfer support (for audio
953# or video class gadget drivers), or specific hardware, here.
954config USB_G_WEBCAM
955	tristate "USB Webcam Gadget"
956	depends on VIDEO_DEV
957	select USB_LIBCOMPOSITE
958	select VIDEOBUF2_VMALLOC
959	help
960	  The Webcam Gadget acts as a composite USB Audio and Video Class
961	  device. It provides a userspace API to process UVC control requests
962	  and stream video data to the host.
963
964	  Say "y" to link the driver statically, or "m" to build a
965	  dynamically linked module called "g_webcam".
966
967endchoice
968
969endif # USB_GADGET
970