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