usb: add basic USB configs in Kconfig

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Marek Vasut <marex@denx.de>

diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index e69de29..b4a9442 100644 (file)
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -0,0 +1,46 @@
+config USB_ARCH_HAS_HCD
+       def_bool y
+
+config USB
+       bool "Support for Host-side USB"
+       depends on USB_ARCH_HAS_HCD
+       ---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.txt>.
+
+if USB
+
+source "drivers/usb/host/Kconfig"
+
+config USB_STORAGE
+       bool "USB Mass Storage support"
+       ---help---
+         Say Y here if you want to connect USB mass storage devices to your
+         board's USB port.
+
+endif

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
new file mode 100644 (file)
index 0000000..8a6496a
--- /dev/null
+++ b/drivers/usb/host/Kconfig
@@ -0,0 +1,48 @@
+#
+# USB Host Controller Drivers
+#
+comment "USB Host Controller Drivers"
+
+config USB_XHCI_HCD
+       bool "xHCI HCD (USB 3.0) support"
+       ---help---
+         The eXtensible Host Controller Interface (xHCI) is standard for USB 3.0
+         "SuperSpeed" host controller hardware.
+
+config USB_XHCI
+       bool
+       default USB_XHCI_HCD
+       ---help---
+         TODO: rename after most boards switch to Kconfig
+
+if USB_XHCI_HCD
+
+endif
+
+config USB_EHCI_HCD
+       bool "EHCI HCD (USB 2.0) support"
+       ---help---
+         The Enhanced Host Controller Interface (EHCI) is standard for USB 2.0
+         "high speed" (480 Mbit/sec, 60 Mbyte/sec) host controller hardware.
+         If your USB host controller supports USB 2.0, you will likely want to
+         configure this Host Controller Driver.
+
+         EHCI controllers are packaged with "companion" host controllers (OHCI
+         or UHCI) to handle USB 1.1 devices connected to root hub ports.  Ports
+         will connect to EHCI if the device is high speed, otherwise they
+         connect to a companion controller.  If you configure EHCI, you should
+         probably configure the OHCI (for NEC and some other vendors) USB Host
+         Controller Driver or UHCI (for Via motherboards) Host Controller
+         Driver too.
+
+         You may want to read <file:Documentation/usb/ehci.txt>.
+
+config USB_EHCI
+       bool
+       default USB_EHCI_HCD
+       ---help---
+         TODO: rename after most boards switch to Kconfig
+
+if USB_EHCI_HCD
+
+endif