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Various Intel SoCs (Cherry Trail, Broxton and others) have an internal USB role switch for swiching the OTG USB data lines between the xHCI host controller and the dwc3 gadget controller. Note on some Cherry Trail systems there is ACPI/AML code listening to edge interrupts on the id-pin (through an _AIE ACPI method) and switching the role between ROLE_HOST and ROLE_NONE based on the id-pin. Note it does not set the role to ROLE_DEVICE, because device-mode is usually not used under Windows. The presence of AML code which modifies the cfg0 reg (on some systems) means that our read/write/modify of cfg0 may race with the AML code doing the same to avoid this we take the global ACPI lock while doing the read/write/modify. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
212 lines
5.9 KiB
Plaintext
212 lines
5.9 KiB
Plaintext
#
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# USB device configuration
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#
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config USB_OHCI_BIG_ENDIAN_DESC
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bool
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config USB_OHCI_BIG_ENDIAN_MMIO
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bool
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config USB_OHCI_LITTLE_ENDIAN
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bool
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default n if STB03xxx || PPC_MPC52xx
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default y
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config USB_EHCI_BIG_ENDIAN_MMIO
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bool
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config USB_EHCI_BIG_ENDIAN_DESC
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bool
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config USB_UHCI_BIG_ENDIAN_MMIO
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bool
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config USB_UHCI_BIG_ENDIAN_DESC
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bool
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menuconfig USB_SUPPORT
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bool "USB support"
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depends on HAS_IOMEM
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default y
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---help---
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This option adds core support for Universal Serial Bus (USB).
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You will also need drivers from the following menu to make use of it.
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if USB_SUPPORT
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config USB_COMMON
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tristate
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config USB_ARCH_HAS_HCD
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def_bool y
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config USB
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tristate "Support for Host-side USB"
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depends on USB_ARCH_HAS_HCD
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select USB_COMMON
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select NLS # for UTF-8 strings
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---help---
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Universal Serial Bus (USB) is a specification for a serial bus
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subsystem which offers higher speeds and more features than the
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traditional PC serial port. The bus supplies power to peripherals
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and allows for hot swapping. Up to 127 USB peripherals can be
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connected to a single USB host in a tree structure.
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The USB host is the root of the tree, the peripherals are the
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leaves and the inner nodes are special USB devices called hubs.
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Most PCs now have USB host ports, used to connect peripherals
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such as scanners, keyboards, mice, modems, cameras, disks,
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flash memory, network links, and printers to the PC.
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Say Y here if your computer has a host-side USB port and you want
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to use USB devices. You then need to say Y to at least one of the
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Host Controller Driver (HCD) options below. Choose a USB 1.1
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controller, such as "UHCI HCD support" or "OHCI HCD support",
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and "EHCI HCD (USB 2.0) support" except for older systems that
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do not have USB 2.0 support. It doesn't normally hurt to select
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them all if you are not certain.
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If your system has a device-side USB port, used in the peripheral
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side of the USB protocol, see the "USB Gadget" framework instead.
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After choosing your HCD, then select drivers for the USB peripherals
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you'll be using. You may want to check out the information provided
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in <file:Documentation/usb/> and especially the links given in
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<file:Documentation/usb/usb-help.txt>.
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To compile this driver as a module, choose M here: the
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module will be called usbcore.
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config USB_PCI
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bool "PCI based USB host interface"
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depends on PCI
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default y
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---help---
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Many embedded system SOCs (e.g. freescale T2080) have both
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PCI and USB modules with the USB module directly controlled by
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registers and having no relationship to the PCI module.
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If you have such a device you may say N here and PCI related code
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will not be built in the USB driver.
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if USB
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source "drivers/usb/core/Kconfig"
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source "drivers/usb/mon/Kconfig"
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source "drivers/usb/wusbcore/Kconfig"
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source "drivers/usb/host/Kconfig"
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source "drivers/usb/renesas_usbhs/Kconfig"
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source "drivers/usb/class/Kconfig"
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source "drivers/usb/storage/Kconfig"
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source "drivers/usb/image/Kconfig"
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source "drivers/usb/usbip/Kconfig"
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endif
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source "drivers/usb/mtu3/Kconfig"
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source "drivers/usb/musb/Kconfig"
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source "drivers/usb/dwc3/Kconfig"
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source "drivers/usb/dwc2/Kconfig"
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source "drivers/usb/chipidea/Kconfig"
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source "drivers/usb/isp1760/Kconfig"
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comment "USB port drivers"
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if USB
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config USB_USS720
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tristate "USS720 parport driver"
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depends on PARPORT
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select PARPORT_NOT_PC
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---help---
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This driver is for USB parallel port adapters that use the Lucent
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Technologies USS-720 chip. These cables are plugged into your USB
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port and provide USB compatibility to peripherals designed with
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parallel port interfaces.
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The chip has two modes: automatic mode and manual mode. In automatic
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mode, it looks to the computer like a standard USB printer. Only
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printers may be connected to the USS-720 in this mode. The generic
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USB printer driver ("USB Printer support", above) may be used in
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that mode, and you can say N here if you want to use the chip only
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in this mode.
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Manual mode is not limited to printers, any parallel port
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device should work. This driver utilizes manual mode.
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Note however that some operations are three orders of magnitude
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slower than on a PCI/ISA Parallel Port, so timing critical
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applications might not work.
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Say Y here if you own an USS-720 USB->Parport cable and intend to
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connect anything other than a printer to it.
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To compile this driver as a module, choose M here: the
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module will be called uss720.
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source "drivers/usb/serial/Kconfig"
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source "drivers/usb/misc/Kconfig"
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source "drivers/usb/atm/Kconfig"
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endif # USB
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source "drivers/usb/phy/Kconfig"
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source "drivers/usb/gadget/Kconfig"
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source "drivers/usb/typec/Kconfig"
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source "drivers/usb/roles/Kconfig"
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config USB_LED_TRIG
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bool "USB LED Triggers"
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depends on LEDS_CLASS && LEDS_TRIGGERS
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select USB_COMMON
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help
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This option adds LED triggers for USB host and/or gadget activity.
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Say Y here if you are working on a system with led-class supported
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LEDs and you want to use them as activity indicators for USB host or
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gadget.
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config USB_ULPI_BUS
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tristate "USB ULPI PHY interface support"
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select USB_COMMON
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help
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UTMI+ Low Pin Interface (ULPI) is specification for a commonly used
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USB 2.0 PHY interface. The ULPI specification defines a standard set
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of registers that can be used to detect the vendor and product which
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allows ULPI to be handled as a bus. This module is the driver for that
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bus.
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The ULPI interfaces (the buses) are registered by the drivers for USB
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controllers which support ULPI register access and have ULPI PHY
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attached to them. The ULPI PHY drivers themselves are normal PHY
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drivers.
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ULPI PHYs provide often functions such as ADP sensing/probing (OTG
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protocol) and USB charger detection.
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To compile this driver as a module, choose M here: the module will
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be called ulpi.
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config USB_ROLE_SWITCH
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tristate
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endif # USB_SUPPORT
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