Atmel USBA Device Driver

This is the driver for the Atmel USBA USB Device Controller, which can be found integrated on AT32AP700x chips. It works well with the g_file_storage and g_ether gadgets together with both Linux and Windows hosts. Other gadgets should work as well, but they haven't been extensively tested.

Features

• USB 2.0 High-speed capable
• USB 2.0 Test Mode
• DMA is used for all transfers except control endpoints
• Supports up to 7 endpoints (control, bulk, interrupt)
• Supports Vbus sensing if the board supports it (STK1000 does not but can be hacked)

Known issues

• Isochronous endpoints are supported by core but not tested with the driver. Probably doesn't work.
• usbtest shows spurious failures with control transfers.
• REMOTE_WAKEUP feature is not handled. SET and CLEAR requests are successful but ignored.

Patches

• 0000-intro.patch: Introduction
• 0001-usb-gadget-Rename-husb2dev-atmel_usba.patch: Rename husb2dev -> atmel_usba
• 0002-Driver-for-the-Atmel-USBA-on-chip-UDC.patch: The actual driver
• 0003-AVR32-Wire-up-USBA-device.patch: AVR32 platform code