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).
15 menu "USB Gadget Support"
18 tristate "Support for USB Gadgets"
20 USB is a master/slave protocol, organized with one master
21 host (such as a PC) controlling up to 127 peripheral devices.
22 The USB hardware is asymmetric, which makes it easier to set up:
23 you can't connect a "to-the-host" connector to a peripheral.
25 Linux can run in the host, or in the peripheral. In both cases
26 you need a low level bus controller driver, and some software
27 talking to it. Peripheral controllers are often discrete silicon,
28 or are integrated with the CPU in a microcontroller. The more
29 familiar host side controllers have names like "EHCI", "OHCI",
30 or "UHCI", and are usually integrated into southbridges on PC
33 Enable this configuration option if you want to run Linux inside
34 a USB peripheral device. Configure one hardware driver for your
35 peripheral/device side bus controller, and a "gadget driver" for
36 your peripheral protocol. (If you use modular gadget drivers,
37 you may configure more than one.)
39 If in doubt, say "N" and don't enable these drivers; most people
40 don't have this kind of hardware (except maybe inside Linux PDAs).
42 For more information, see <http://www.linux-usb.org/gadget> and
43 the kernel DocBook documentation for this API.
45 config USB_GADGET_DEBUG_FILES
46 boolean "Debugging information files"
47 depends on USB_GADGET && PROC_FS
49 Some of the drivers in the "gadget" framework can expose
50 debugging information in files such as /proc/driver/udc
51 (for a peripheral controller). The information in these
52 files may help when you're troubleshooting or bringing up a
53 driver on a new board. Enable these files by choosing "Y"
54 here. If in doubt, or to conserve kernel memory, say "N".
56 config USB_GADGET_SELECTED
60 # USB Peripheral Controller Support
63 prompt "USB Peripheral Controller"
66 A USB device uses a controller to talk to its host.
67 Systems should have only one such upstream link.
68 Many controller drivers are platform-specific; these
69 often need board-specific hooks.
71 config USB_GADGET_FSL_USB2
72 boolean "Freescale Highspeed USB DR Peripheral Controller"
73 depends on MPC834x || PPC_MPC831x
74 select USB_GADGET_DUALSPEED
76 Some of Freescale PowerPC processors have a High Speed
77 Dual-Role(DR) USB controller, which supports device mode.
79 The number of programmable endpoints is different through
82 Say "y" to link the driver statically, or "m" to build a
83 dynamically linked module called "fsl_usb2_udc" and force
84 all gadget drivers to also be dynamically linked.
88 depends on USB_GADGET_FSL_USB2
90 select USB_GADGET_SELECTED
92 config USB_GADGET_NET2280
93 boolean "NetChip 228x"
95 select USB_GADGET_DUALSPEED
97 NetChip 2280 / 2282 is a PCI based USB peripheral controller which
98 supports both full and high speed USB 2.0 data transfers.
100 It has six configurable endpoints, as well as endpoint zero
101 (for control transfers) and several endpoints with dedicated
104 Say "y" to link the driver statically, or "m" to build a
105 dynamically linked module called "net2280" and force all
106 gadget drivers to also be dynamically linked.
110 depends on USB_GADGET_NET2280
112 select USB_GADGET_SELECTED
114 config USB_GADGET_PXA2XX
115 boolean "PXA 25x or IXP 4xx"
116 depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
118 Intel's PXA 25x series XScale ARM-5TE processors include
119 an integrated full speed USB 1.1 device controller. The
120 controller in the IXP 4xx series is register-compatible.
122 It has fifteen fixed-function endpoints, as well as endpoint
123 zero (for control transfers).
125 Say "y" to link the driver statically, or "m" to build a
126 dynamically linked module called "pxa2xx_udc" and force all
127 gadget drivers to also be dynamically linked.
131 depends on USB_GADGET_PXA2XX
133 select USB_GADGET_SELECTED
135 # if there's only one gadget driver, using only two bulk endpoints,
136 # don't waste memory for the other endpoints
137 config USB_PXA2XX_SMALL
138 depends on USB_GADGET_PXA2XX
140 default n if USB_ETH_RNDIS
141 default y if USB_ZERO
143 default y if USB_G_SERIAL
145 config USB_GADGET_GOKU
146 boolean "Toshiba TC86C001 'Goku-S'"
149 The Toshiba TC86C001 is a PCI device which includes controllers
150 for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
152 The device controller has three configurable (bulk or interrupt)
153 endpoints, plus endpoint zero (for control transfers).
155 Say "y" to link the driver statically, or "m" to build a
156 dynamically linked module called "goku_udc" and to force all
157 gadget drivers to also be dynamically linked.
161 depends on USB_GADGET_GOKU
163 select USB_GADGET_SELECTED
166 config USB_GADGET_LH7A40X
168 depends on ARCH_LH7A40X
170 This driver provides USB Device Controller driver for LH7A40x
174 depends on USB_GADGET_LH7A40X
176 select USB_GADGET_SELECTED
179 config USB_GADGET_OMAP
180 boolean "OMAP USB Device Controller"
182 select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
184 Many Texas Instruments OMAP processors have flexible full
185 speed USB device controllers, with support for up to 30
186 endpoints (plus endpoint zero). This driver supports the
187 controller in the OMAP 1611, and should work with controllers
188 in other OMAP processors too, given minor tweaks.
190 Say "y" to link the driver statically, or "m" to build a
191 dynamically linked module called "omap_udc" and force all
192 gadget drivers to also be dynamically linked.
196 depends on USB_GADGET_OMAP
198 select USB_GADGET_SELECTED
201 boolean "OTG Support"
202 depends on USB_GADGET_OMAP && ARCH_OMAP_OTG && USB_OHCI_HCD
204 The most notable feature of USB OTG is support for a
205 "Dual-Role" device, which can act as either a device
206 or a host. The initial role choice can be changed
207 later, when two dual-role devices talk to each other.
209 Select this only if your OMAP board has a Mini-AB connector.
211 config USB_GADGET_AT91
212 boolean "AT91 USB Device Port"
213 depends on ARCH_AT91 && !ARCH_AT91SAM9RL
214 select USB_GADGET_SELECTED
216 Many Atmel AT91 processors (such as the AT91RM2000) have a
217 full speed USB Device Port with support for five configurable
218 endpoints (plus endpoint zero).
220 Say "y" to link the driver statically, or "m" to build a
221 dynamically linked module called "at91_udc" and force all
222 gadget drivers to also be dynamically linked.
226 depends on USB_GADGET_AT91
229 config USB_GADGET_M66592
230 boolean "M66592 driver"
231 select USB_GADGET_DUALSPEED
233 M66592 is a USB 2.0 peripheral controller.
235 It has seven configurable endpoints, and endpoint zero.
237 Say "y" to link the driver statically, or "m" to build a
238 dynamically linked module called "m66592_udc" and force all
239 gadget drivers to also be dynamically linked.
243 depends on USB_GADGET_M66592
245 select USB_GADGET_SELECTED
247 config USB_GADGET_DUMMY_HCD
248 boolean "Dummy HCD (DEVELOPMENT)"
249 depends on (USB=y || (USB=m && USB_GADGET=m)) && EXPERIMENTAL
250 select USB_GADGET_DUALSPEED
252 This host controller driver emulates USB, looping all data transfer
253 requests back to a USB "gadget driver" in the same host. The host
254 side is the master; the gadget side is the slave. Gadget drivers
255 can be high, full, or low speed; and they have access to endpoints
256 like those from NET2280, PXA2xx, or SA1100 hardware.
258 This may help in some stages of creating a driver to embed in a
259 Linux device, since it lets you debug several parts of the gadget
260 driver without its hardware or drivers being involved.
262 Since such a gadget side driver needs to interoperate with a host
263 side Linux-USB device driver, this may help to debug both sides
264 of a USB protocol stack.
266 Say "y" to link the driver statically, or "m" to build a
267 dynamically linked module called "dummy_hcd" and force all
268 gadget drivers to also be dynamically linked.
272 depends on USB_GADGET_DUMMY_HCD
274 select USB_GADGET_SELECTED
276 # NOTE: Please keep dummy_hcd LAST so that "real hardware" appears
277 # first and will be selected by default.
281 config USB_GADGET_DUALSPEED
283 depends on USB_GADGET
286 Means that gadget drivers should include extra descriptors
287 and code to handle dual-speed controllers.
293 tristate "USB Gadget Drivers"
294 depends on USB_GADGET && USB_GADGET_SELECTED
297 A Linux "Gadget Driver" talks to the USB Peripheral Controller
298 driver through the abstract "gadget" API. Some other operating
299 systems call these "client" drivers, of which "class drivers"
300 are a subset (implementing a USB device class specification).
301 A gadget driver implements one or more USB functions using
302 the peripheral hardware.
304 Gadget drivers are hardware-neutral, or "platform independent",
305 except that they sometimes must understand quirks or limitations
306 of the particular controllers they work with. For example, when
307 a controller doesn't support alternate configurations or provide
308 enough of the right types of endpoints, the gadget driver might
309 not be able work with that controller, or might need to implement
310 a less common variant of a device class protocol.
312 # this first set of drivers all depend on bulk-capable hardware.
315 tristate "Gadget Zero (DEVELOPMENT)"
316 depends on EXPERIMENTAL
318 Gadget Zero is a two-configuration device. It either sinks and
319 sources bulk data; or it loops back a configurable number of
320 transfers. It also implements control requests, for "chapter 9"
321 conformance. The driver needs only two bulk-capable endpoints, so
322 it can work on top of most device-side usb controllers. It's
323 useful for testing, and is also a working example showing how
324 USB "gadget drivers" can be written.
326 Make this be the first driver you try using on top of any new
327 USB peripheral controller driver. Then you can use host-side
328 test software, like the "usbtest" driver, to put your hardware
329 and its driver through a basic set of functional tests.
331 Gadget Zero also works with the host-side "usb-skeleton" driver,
332 and with many kinds of host-side test software. You may need
333 to tweak product and vendor IDs before host software knows about
334 this device, and arrange to select an appropriate configuration.
336 Say "y" to link the driver statically, or "m" to build a
337 dynamically linked module called "g_zero".
339 config USB_ZERO_HNPTEST
340 boolean "HNP Test Device"
341 depends on USB_ZERO && USB_OTG
343 You can configure this device to enumerate using the device
344 identifiers of the USB-OTG test device. That means that when
345 this gadget connects to another OTG device, with this one using
346 the "B-Peripheral" role, that device will use HNP to let this
347 one serve as the USB host instead (in the "B-Host" role).
350 tristate "Ethernet Gadget (with CDC Ethernet support)"
353 This driver implements Ethernet style communication, in either
356 - The "Communication Device Class" (CDC) Ethernet Control Model.
357 That protocol is often avoided with pure Ethernet adapters, in
358 favor of simpler vendor-specific hardware, but is widely
359 supported by firmware for smart network devices.
361 - On hardware can't implement that protocol, a simple CDC subset
362 is used, placing fewer demands on USB.
364 RNDIS support is a third option, more demanding than that subset.
366 Within the USB device, this gadget driver exposes a network device
367 "usbX", where X depends on what other networking devices you have.
368 Treat it like a two-node Ethernet link: host, and gadget.
370 The Linux-USB host-side "usbnet" driver interoperates with this
371 driver, so that deep I/O queues can be supported. On 2.4 kernels,
372 use "CDCEther" instead, if you're using the CDC option. That CDC
373 mode should also interoperate with standard CDC Ethernet class
374 drivers on other host operating systems.
376 Say "y" to link the driver statically, or "m" to build a
377 dynamically linked module called "g_ether".
380 bool "RNDIS support (EXPERIMENTAL)"
381 depends on USB_ETH && EXPERIMENTAL
384 Microsoft Windows XP bundles the "Remote NDIS" (RNDIS) protocol,
385 and Microsoft provides redistributable binary RNDIS drivers for
386 older versions of Windows.
388 If you say "y" here, the Ethernet gadget driver will try to provide
389 a second device configuration, supporting RNDIS to talk to such
392 To make MS-Windows work with this, use Documentation/usb/linux.inf
393 as the "driver info file". For versions of MS-Windows older than
394 XP, you'll need to download drivers from Microsoft's website; a URL
395 is given in comments found in that info file.
398 tristate "Gadget Filesystem (EXPERIMENTAL)"
399 depends on EXPERIMENTAL
401 This driver provides a filesystem based API that lets user mode
402 programs implement a single-configuration USB device, including
403 endpoint I/O and control requests that don't relate to enumeration.
404 All endpoints, transfer speeds, and transfer types supported by
405 the hardware are available, through read() and write() calls.
407 Say "y" to link the driver statically, or "m" to build a
408 dynamically linked module called "gadgetfs".
410 config USB_FILE_STORAGE
411 tristate "File-backed Storage Gadget"
414 The File-backed Storage Gadget acts as a USB Mass Storage
415 disk drive. As its storage repository it can use a regular
416 file or a block device (in much the same way as the "loop"
417 device driver), specified as a module parameter.
419 Say "y" to link the driver statically, or "m" to build a
420 dynamically linked module called "g_file_storage".
422 config USB_FILE_STORAGE_TEST
423 bool "File-backed Storage Gadget testing version"
424 depends on USB_FILE_STORAGE
427 Say "y" to generate the larger testing version of the
428 File-backed Storage Gadget, useful for probing the
429 behavior of USB Mass Storage hosts. Not needed for
433 tristate "Serial Gadget (with CDC ACM support)"
435 The Serial Gadget talks to the Linux-USB generic serial driver.
436 This driver supports a CDC-ACM module option, which can be used
437 to interoperate with MS-Windows hosts or with the Linux-USB
440 Say "y" to link the driver statically, or "m" to build a
441 dynamically linked module called "g_serial".
443 For more information, see Documentation/usb/gadget_serial.txt
444 which includes instructions and a "driver info file" needed to
445 make MS-Windows work with this driver.
447 config USB_MIDI_GADGET
448 tristate "MIDI Gadget (EXPERIMENTAL)"
449 depends on SND && EXPERIMENTAL
452 The MIDI Gadget acts as a USB Audio device, with one MIDI
453 input and one MIDI output. These MIDI jacks appear as
454 a sound "card" in the ALSA sound system. Other MIDI
455 connections can then be made on the gadget system, using
456 ALSA's aconnect utility etc.
458 Say "y" to link the driver statically, or "m" to build a
459 dynamically linked module called "g_midi".
462 # put drivers that need isochronous transfer support (for audio
463 # or video class gadget drivers), or specific hardware, here.