[SLOF] [RFC PATCH] usb-xhci: add keyboard support

Nikunj A Dadhania nikunj at linux.vnet.ibm.com
Thu Sep 10 21:58:38 AEST 2015

Benjamin Herrenschmidt <benh at au1.ibm.com> writes:

> On Thu, 2015-09-10 at 11:54 +0530, Nikunj A Dadhania wrote:
>> Current implementation enumerated only the USB3 ports and supported
>> USB
>> MSC device.
>> QEMU USB keyboard attached to a xhci controller appears as high speed
>> device.
>>     * Add support for scanning usb2 ports.
>>     * Add support for xhci interrupt pipes needed for keyboard
>> handling
>>     * Improve usb key fetching
>> Signed-off-by: Nikunj A Dadhania <nikunj at linux.vnet.ibm.com>
>> ---
>> Got the keyboard working on usb3. There may be some rough edges, 
>> I am testing this on my end. Thought of sending it for early review
> One thing to be careful about is that I noticed that QEMU
> implenmentation of XHCI doesn't implement halt properly. It basically
> says that it's halted immediately but doesn't actually terminate
> ongoing activities and DMAs ... Something to be careful about.

Oh ok, do we need some delay in the shutdown path before ending quiesce?


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