Removed the notion of attached. The khci_usbattach is call early in
the init either in board_initalize or in board_app_initalize. In
either case it is always done prior to the the class register.
Therefore the khci_usbattach call only set a flag, and that
flag is only tested in the class register. The class register will
enable the soft connect pull up.
The call is not need by the driver if CONFIG_USBDEV_BUSPOWERED=y
The class register will enable the soft connect pull up. The
khci_usbattach call only set a flag, and that flag is only tested
in the class register. On a USB powered device if we are running we
are attached.
This fixes a bug were a SoC does not have a clockdivN register
and passes a 0 for the init value. This prevents overflow of
the 0 decremented to -1 (0xffffffff) spilling over to other
clockdivN feilds.
Remove magic numbers from code, documented the use of
undocumented bits.
Remove comments and code that were not appropriate for this
hardware.
Removed ifdef that's that were always compiled and removed code
blocks that were never compiled.
Ensure proper access order to hardware.
Per the reference manual: disable endpoints prior to configuring buffer
descriptor, then enable endpoints
Reorganize interrupt processing order to offload data after processing
errors.
Reorganize initialization so that there is a clear initialization phase,
reset phase for both the hardware and software structures.
By breaking the initialization into smaller pieces, the reset interrupt
only resets the resources within the controller that should be reset.
Rework suspend and resume logic so they perform properly
Made attach and detach functions optional. As they do not make sense for
a bus powered device.
Ensured the calls to up_usbinitalize up_usbuninitalize do not violate the
USB spec.
The hardware reset state of the the MPU precludes any bus
masters other then DMA access to memory. Unfortunately
USB and SDHC have there own DMA and will not have access to
memory in the default reset state.
This change disabled the MPU if present on system startup.
