* JS20 exposed various timing related issues that were not apparent in
the emulated environment.
* Reset the USB Bus
* JS20 overrides the frame_interval and periodic_start on setting the
controller to USB operational. Reprogram them.
* ohci fix the data-toggle bits.
* Robust error handling
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
OHCI HC after using the TDs queues them back to hccaDoneHead. Until
this event the TDs cannot be reused, as there might be references in
the host controller still pending. Recycle all the TDs from the queue
and acknowledge it by clearing the WD bit in interrupt status
register.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Moreover ehci already suspends the controller in the hcd_exit path. So
we can remove hc-suspend from the cleanup path.
Also, count mechanism is not needed anymore, as quiesce is called only
once.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Clean up all the dma allocated buffers and remove their mappings.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Portions of keyboard driver(usb-key.h and usb-hid.c) inherited from
code originally written by former SLOF team
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Generic routines to get pipe structure from controller.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>
usb-core: usb_pipe structure, this structure will be embedded in
controller specific pipe structure and accessed using
container_of macro.
usb-ohci: allocate pipe pool and support routines
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Alexey Kardashevskiy