CONFIG_USB_DUMMY_HCD: Dummy HCD (DEVELOPMENT)

General informations

The Linux kernel configuration item CONFIG_USB_DUMMY_HCD has multiple definitions:

Dummy HCD (DEVELOPMENT) found in drivers/usb/gadget/udc/Kconfig

The configuration item CONFIG_USB_DUMMY_HCD:

• prompt: Dummy HCD (DEVELOPMENT)
• type: tristate
• depends on: CONFIG_USB = CONFIG_y || ( CONFIG_USB = CONFIG_m && CONFIG_USB_GADGET = CONFIG_m )
• defined in drivers/usb/gadget/udc/Kconfig
• found in Linux kernels: 3.17–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• modules built: dummy_hcd, dummy_hcd

Help text

This host controller driver emulates USB, looping all data transfer requests back to a USB "gadget driver" in the same host. The host side is the controller; the gadget side is the device. Gadget drivers can be high, full, or low speed; and they have access to endpoints like those from NET2280, PXA2xx, or SA1100 hardware.

This may help in some stages of creating a driver to embed in a Linux device, since it lets you debug several parts of the gadget driver without its hardware or drivers being involved.

Since such a gadget side driver needs to interoperate with a host side Linux-USB device driver, this may help to debug both sides of a USB protocol stack.

Say "y" to link the driver statically, or "m" to build a dynamically linked module called "dummy_hcd" and force all gadget drivers to also be dynamically linked.

Dummy HCD (DEVELOPMENT) found in drivers/usb/gadget/Kconfig

The configuration item CONFIG_USB_DUMMY_HCD:

• prompt: Dummy HCD (DEVELOPMENT)
• type: tristate
• depends on: CONFIG_USB = CONFIG_y || ( CONFIG_USB = CONFIG_m && CONFIG_USB_GADGET = CONFIG_m )
• defined in drivers/usb/gadget/Kconfig
• found in Linux kernels: 3.1–3.16
• modules built: dummy_hcd, dummy_hcd

Help text

This host controller driver emulates USB, looping all data transfer requests back to a USB "gadget driver" in the same host. The host side is the master; the gadget side is the slave. Gadget drivers can be high, full, or low speed; and they have access to endpoints like those from NET2280, PXA2xx, or SA1100 hardware.

This may help in some stages of creating a driver to embed in a Linux device, since it lets you debug several parts of the gadget driver without its hardware or drivers being involved.

Since such a gadget side driver needs to interoperate with a host side Linux-USB device driver, this may help to debug both sides of a USB protocol stack.

Say "y" to link the driver statically, or "m" to build a dynamically linked module called "dummy_hcd" and force all gadget drivers to also be dynamically linked.

found in drivers/usb/gadget/Kconfig

The configuration item CONFIG_USB_DUMMY_HCD:

• prompt:
• type: tristate
• depends on: CONFIG_USB_GADGET_DUMMY_HCD
• defined in drivers/usb/gadget/Kconfig
• found in Linux kernels: 2.6.6–2.6.39, 3.0
• modules built: dummy_hcd, dummy_hcd

Help text

(none)

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module dummy_hcd CONFIG_USB_DUMMY_HCD : drivers/usb/gadget/Kconfig : "Dummy HCD (DEVELOPMENT)" # in 2.6.6–2.6.39, 3.0–3.16
• lkddb module dummy_hcd CONFIG_USB_DUMMY_HCD : drivers/usb/gadget/udc/Kconfig : "Dummy HCD (DEVELOPMENT)" # in 3.17–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• lkddb platform "dummy_hcd" : CONFIG_OF CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/gadget/udc/dummy_hcd.c # in 4.12–4.14
• lkddb platform "dummy_hcd" : CONFIG_OF CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY CONFIG_USB_SUPPORT : drivers/usb/gadget/udc/dummy_hcd.c # in 4.15–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• lkddb platform "dummy_hcd" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET : drivers/usb/gadget/dummy_hcd.c # in 2.6.15–2.6.39
• lkddb platform "dummy_hcd" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_OTG_UTILS : drivers/usb/gadget/dummy_hcd.c # in 3.0–3.9
• lkddb platform "dummy_hcd" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/gadget/dummy_hcd.c # in 3.10–3.16
• lkddb platform "dummy_hcd" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/gadget/udc/dummy_hcd.c # in 3.17–3.19, 4.0–4.11
• lkddb platform "dummy_udc" : CONFIG_OF CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/gadget/udc/dummy_hcd.c # in 4.12–4.14
• lkddb platform "dummy_udc" : CONFIG_OF CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY CONFIG_USB_SUPPORT : drivers/usb/gadget/udc/dummy_hcd.c # in 4.15–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• lkddb platform "dummy_udc" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET : drivers/usb/gadget/dummy_hcd.c # in 2.6.15–2.6.39
• lkddb platform "dummy_udc" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_OTG_UTILS : drivers/usb/gadget/dummy_hcd.c # in 3.0–3.9
• lkddb platform "dummy_udc" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/gadget/dummy_hcd.c # in 3.10–3.16
• lkddb platform "dummy_udc" : CONFIG_PCI CONFIG_USB CONFIG_USB_DUMMY_HCD CONFIG_USB_GADGET CONFIG_USB_PHY : drivers/usb/gadget/udc/dummy_hcd.c # in 3.17–3.19, 4.0–4.11

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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