linux/drivers/usb/Kconfig
Lukas Bulwahn d629c0e221 usb: move config USB_USS720 to usb's misc Kconfig
The USS720 parport driver source code is in drivers/usb/misc/, the
corresponding config is defined in drivers/usb/Kconfig. Some digging in the
kernel's history revealed no good reason why it needs to be defined in
USB's top-level Kconfig file, and why the config for the USS720 parport
driver should be the first in the list of USB port drivers, while all other
configs for drivers in drivers/usb/misc are in the USB Miscellaneous driver
configuration file.

Most probably, it was simply considered a bit more special when the USB
Miscellaneous driver configuration file (drivers/usb/misc/Config.in back
then) was initially created, and this config simply survived to remain at
the top-level USB Kconfig file with all further code/Kconfig
transformations and additions later on. Users rarely notice this config
being at this position, as CONFIG_PARPORT (Parallel port support) needs to
be enabled and only few users enable that. Nowadays, this USB_USS720 driver
is probably not that special that it needs to be listed as first item of
the USB port drivers.

Move the configuration of the USS720 parport driver to the top of the USB
Miscellaneous drivers section, as the configurations does not have a lot of
specific ordering USB Miscellaneous drivers. This way, the USS720 parport
driver is moved to the comment "USB Miscellaneous drivers", fitting to the
driver's source code location, but still is at the top of the list for
those few acquainted users of Kconfig UIs that might be looking for the
config that was once at the top of the list of the USB port drivers.

Put this config definition to a more local place. No semantic change.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20230329075125.32352-1-lukas.bulwahn@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-29 10:34:08 +02:00

153 lines
3.7 KiB
Plaintext

# SPDX-License-Identifier: GPL-2.0
#
# USB device configuration
#
config USB_OHCI_BIG_ENDIAN_DESC
bool
config USB_OHCI_BIG_ENDIAN_MMIO
bool
config USB_OHCI_LITTLE_ENDIAN
bool
default n if PPC_MPC52xx
default y
config USB_EHCI_BIG_ENDIAN_MMIO
bool
config USB_EHCI_BIG_ENDIAN_DESC
bool
config USB_UHCI_BIG_ENDIAN_MMIO
bool
config USB_UHCI_BIG_ENDIAN_DESC
bool
menuconfig USB_SUPPORT
bool "USB support"
depends on HAS_IOMEM
default y
help
This option adds core support for Universal Serial Bus (USB).
You will also need drivers from the following menu to make use of it.
if USB_SUPPORT
source "drivers/usb/common/Kconfig"
config USB_ARCH_HAS_HCD
def_bool y
config USB
tristate "Support for Host-side USB"
depends on USB_ARCH_HAS_HCD
select GENERIC_ALLOCATOR
select USB_COMMON
select NLS # for UTF-8 strings
help
Universal Serial Bus (USB) is a specification for a serial bus
subsystem which offers higher speeds and more features than the
traditional PC serial port. The bus supplies power to peripherals
and allows for hot swapping. Up to 127 USB peripherals can be
connected to a single USB host in a tree structure.
The USB host is the root of the tree, the peripherals are the
leaves and the inner nodes are special USB devices called hubs.
Most PCs now have USB host ports, used to connect peripherals
such as scanners, keyboards, mice, modems, cameras, disks,
flash memory, network links, and printers to the PC.
Say Y here if your computer has a host-side USB port and you want
to use USB devices. You then need to say Y to at least one of the
Host Controller Driver (HCD) options below. Choose a USB 1.1
controller, such as "UHCI HCD support" or "OHCI HCD support",
and "EHCI HCD (USB 2.0) support" except for older systems that
do not have USB 2.0 support. It doesn't normally hurt to select
them all if you are not certain.
If your system has a device-side USB port, used in the peripheral
side of the USB protocol, see the "USB Gadget" framework instead.
After choosing your HCD, then select drivers for the USB peripherals
you'll be using. You may want to check out the information provided
in <file:Documentation/usb/> and especially the links given in
<file:Documentation/usb/usb-help.rst>.
To compile this driver as a module, choose M here: the
module will be called usbcore.
config USB_PCI
bool "PCI based USB host interface"
depends on PCI
default y
help
Many embedded system SOCs (e.g. freescale T2080) have both
PCI and USB modules with the USB module directly controlled by
registers and having no relationship to the PCI module.
If you have such a device you may say N here and PCI related code
will not be built in the USB driver.
if USB
source "drivers/usb/core/Kconfig"
source "drivers/usb/mon/Kconfig"
source "drivers/usb/host/Kconfig"
source "drivers/usb/renesas_usbhs/Kconfig"
source "drivers/usb/class/Kconfig"
source "drivers/usb/storage/Kconfig"
source "drivers/usb/image/Kconfig"
source "drivers/usb/usbip/Kconfig"
endif
comment "USB dual-mode controller drivers"
source "drivers/usb/cdns3/Kconfig"
source "drivers/usb/fotg210/Kconfig"
source "drivers/usb/mtu3/Kconfig"
source "drivers/usb/musb/Kconfig"
source "drivers/usb/dwc3/Kconfig"
source "drivers/usb/dwc2/Kconfig"
source "drivers/usb/chipidea/Kconfig"
source "drivers/usb/isp1760/Kconfig"
comment "USB port drivers"
if USB
source "drivers/usb/serial/Kconfig"
source "drivers/usb/misc/Kconfig"
source "drivers/usb/atm/Kconfig"
endif # USB
source "drivers/usb/phy/Kconfig"
source "drivers/usb/gadget/Kconfig"
source "drivers/usb/typec/Kconfig"
source "drivers/usb/roles/Kconfig"
endif # USB_SUPPORT