Subject: [PATCH 1/3] misc: Add crossbar driver

From: [email-masked] (Sricharan R)
Date: Fri, 23 Aug 2013 11:41:24 +0530

Hi,
On Friday 23 August 2013 10:17 AM, Rajendra Nayak wrote:
> On Thursday 22 August 2013 05:03 PM, Sricharan R wrote:
>>  maps crossbar number<->  to interrupt number and
>>  calls request_irq(int_no, crossbar_handler,..)
> So will this mapping happen based on some data passed from DT or
> just based on whats available when the device does a request_irq()?
>
> If its based on whats available then I see an issue when you need
> to remap something thats already mapped by default (and not used)
> since you run out of all free ones.
Yes, when done based on what is available then there is a
problem when we run out of free ones because we do not
know which one to replace. I was thinking of something like
this,
    1) DT would give a list of all free ones, and also if some are
        mapped as default and not used, mark those also as free.

     2) While mapping see if it has a default mapping and use it.
          otherwise, pick from free list.   

  This should be ok right ?

Regards,
 Sricharan