Re: [Xenomai] GPIO Interrupts problem with RTDM

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On 01/28/2013 01:29 PM, Paul wrote:

> On Friday 25 January 2013, Gilles Chanteperdrix wrote:
>> On 01/24/2013 06:12 PM, Paul wrote:
>>> On Thursday 24 January 2013, Christophe Blaess wrote:
>>>> On 22/01/2013 04:06, Paul wrote:
>>>>> On Sunday 20 January 2013, Gilles Chanteperdrix wrote:
>>>>>> Yes, this patch is based on 3.5.7 and is used with and without
>>>>>> GENERIC_CLOCKEVENTS.
>>>>>
>>>>> Short version: Updated my kernel to 3.5.7 and backported the
>>>>> Raspberry Pi changes from 3.6.11 and added in the ipipe support.
>>>>> Interrupts are not being recognised unless irq_set_irq_type() is
>>>>> called. Digging through the rtdm, nucleus, and ipipe code, at no
>>>>> point is
>>>>> irq_chip->irq_set_type() called - Also have a problem that none
>>>>> of the ipipe_pic_muter fields are set, so
>>>>> __ipipe_enable_irqdesc() & friends do nothing.
>>>>
>>>> I'm trying to follow the same steps as you but I still have some
>>>> compilation errors while porting
>>>> R-Pi modifications to 3.5.7. (especially arm timer code).
>>>>
>>>> Do you have any available patch against 3.5.7 vanilla kernel ?
>>>
>>> Funny that you should ask - I am in the middle of generating a
>>> patch set against 3.5.7 with the Raspberry Pi additions. This will
>>> include the ipipe modifications along with a fix to the gpio
>>> interrupt handler.
>>
>> If you generate this patch as a diff agains the I-pipe kernel, the
>> patch could be shipped with Xenomai, or even merged in the I-pipe
>> kernel.
> 
> Generated three patches which Christophe is trying out. At some 91,000 
> lines, it touches on several core kernel sources including mmc, dma, 
> and skbuff as well as adding a dwc_otg driver on top of the 
> BCM2835/2708 support. Not sure that you'd want to merge the changes 
> that affect some (estimated) sixty 3.5.7 files. Shipping as an optional 
> add-on patch is possible, but it currently generates a couple of 
> rejects when applied to a vanilla 3.5.7-stable.
> 
> Work is under way by the Raspberry Pi team to get the required support 
> integrated with the mainline kernel. By the time 3.10.y gets released, 
> we might see it in stable.


Right, we can wait for mainline, or, ship the jumbo patch with Xenomai,
but separated, and with every I-pipe release, you would merge the
changes from the I-pipe branch.

> 
> 
> Regards, Paul.
> 



-- 
                                                                Gilles.