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minix/drivers/usbd
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Wojciech Zajac 7df0836d35 USBD return value for wrong URB submit
2014-07-28 17:05:54 +02:00
..
base Memory related fixes for DDE/USBD 2014-07-28 17:05:51 +02:00
hcd USBD return value for wrong URB submit 2014-07-28 17:05:54 +02:00
include/usb Generalization of USB transfer's error handling 2014-07-28 17:05:53 +02:00
Makefile arm:adding the usbd source code. 2014-07-28 17:05:38 +02:00
README.txt Generalization of USB transfer's error handling 2014-07-28 17:05:53 +02:00
usbd.conf arm:adding the usbd source code. 2014-07-28 17:05:38 +02:00

README.txt 

-------------------------------------------------------------------------------
*                           INFORMATION:                                      *
-------------------------------------------------------------------------------
README file for "USBD" USB host controller driver.

created march-june 2014, JPEmbedded (info@jpembedded.eu)

-------------------------------------------------------------------------------
*                           KNOWN LIMITATIONS:                                *
-------------------------------------------------------------------------------
- Only first configuration can be selected for attached device
- Only one device can be handled at a time, no hub functionality
- Driver assumes that there is no preemption for DDEKit threading
- URBs are enqueued in DDEKit but not in USBD itself
- DDEKit way of handling interface numbers is not explicitly defined, bitmask
  formatting for it, is therefore hardcoded into USBD
- Waiting for USB0 clock to leave IDLEST.Disable state, by nanosleep, was
  removed, as this should be implemented for all clocks in clkconf_set
- Control transfers can only be performed with EP0