Kconfig - OpenGrok cross reference for /linux-6.12.1/drivers/usb/gadget/Kconfig

1 # SPDX-License-Identifier: GPL-2.0
3 # USB Gadget support on a system involves
7 # NOTE:  Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !!
9 #  - Host systems (like PCs) need CONFIG_USB (with "A" jacks).
10 #  - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks).
11 #  - Some systems have both kinds of controllers.
13 # With help from a special transceiver and a "Mini-AB" jack, systems with
14 # both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG).
18 	tristate "USB Gadget Support"
22 	   USB is a host/device protocol, organized with one host (such as a
24 	   The USB hardware is asymmetric, which makes it easier to set up:
25 	   you can't connect a "to-the-host" connector to a peripheral.
27 	   Linux can run in the host, or in the peripheral.  In both cases
31 	   familiar host side controllers have names like "EHCI", "OHCI",
36 	   a USB peripheral device.  Configure one hardware driver for your
44 	   For more information, see <http://www.linux-usb.org/gadget> and
100 	int "Maximum VBUS Power usage (2-500 mA)"
104 	   Some devices need to draw power from USB when they are
109 	   Enter the maximum power your device draws through USB, in
110 	   milliAmperes.  The permitted range of values is 2 - 500 mA;
113 	   This value will be used except for system-specific gadget
125 	   an CPU on-demand governor. Especially if DMA is doing IO to
138 source "drivers/usb/gadget/udc/Kconfig"
141 # USB Gadget Drivers
224 # this first set of drivers all depend on bulk-capable hardware.
227 	tristate "USB Gadget functions configurable through configfs"
230 	  A Linux USB "gadget" can be set up through configfs.
231 	  If this is the case, the USB functions (which from the host's
236 	  For more information see Documentation/usb/gadget_configfs.rst.
245 	  The function talks to the Linux-USB generic serial driver.
255 	  MS-Windows hosts or with the Linux-USB "cdc-acm" driver.
276 	  grouping of several ethernet frames into one USB transfer and
288 	  favor of simpler vendor-specific hardware, but is widely
299 	  a simple CDC subset is used, placing fewer demands on USB.
312 	   To make MS-Windows work with this, use Documentation/usb/linux.inf
313 	   as the "driver info file".  For versions of MS-Windows older than
325 	  CDC EEM is a newer USB standard that is somewhat simpler than CDC ECM
328 	  the network interface to the target (e.g. a USB cable modem), and the
330 	  ethernet over USB.  For Linux gadgets, however, the interface with
331 	  the host is the same (a usbX device), so the differences are minimal.
341 	  The Phonet protocol implementation for USB device.
349 	  The Mass Storage Gadget acts as a USB Mass Storage disk drive.
363 	  USB peripheral controller driver.  Then you can use host-side
372 	  The Function Filesystem (FunctionFS) lets one create USB
374 	  lets one create USB gadgets in user space.  This allows creation
389 	  1 AudioStreaming Interface each for USB-OUT and USB-IN.
391 	  on the device - the audio streams are simply sinked to and
392 	  sourced from a virtual ALSA sound card created. The user-space
394 	  received from the USB Host and choose to provide whatever it
395 	  wants as audio data to the USB Host.
406 	  1 AudioStreaming Interface each for USB-OUT and USB-IN.
419 	  This Audio function is compatible with USB Audio Class
421 	  1 AudioStreaming Interface each for USB-OUT and USB-IN.
423 	  on the device - the audio streams are simply sinked to and
424 	  sourced from a virtual ALSA sound card created. The user-space
426 	  received from the USB Host and choose to provide whatever it
427 	  wants as audio data to the USB Host.
437 	  The MIDI Function acts as a USB Audio device, with one MIDI
453 	  USB MIDI 2.0 interface, looped back to ALSA UMP rawmidi
454 	  device on the gadget host. It supports UMP 1.1 spec and
463 	  The HID function driver provides generic emulation of USB
466 	  For more information, see Documentation/usb/gadget_hid.rst.
469 	bool "USB Webcam function"
477 	  The Webcam function acts as a composite USB Audio and Video Class
479 	  and stream video data to the host.
486 	  The Printer function channels data between the USB host and a
492 	  For more information, see Documentation/usb/gadget_printer.rst
496 	bool "USB Gadget Target Fabric"
502 	  This fabric is a USB gadget component. Two USB protocols are
504 	  (USB Attached SCSI). BOT is advertised on alternative
507 	  UAS utilizes the USB 3.0 feature called streams support.
509 source "drivers/usb/gadget/legacy/Kconfig"