SPI in IXP4XX

SPI in IXP4XX

[Miguel Ángel Álvarez]

Hi

I have used PXA2XX code to implement SPI in IXP4XX. SPI in both of
them is implemented using an SSP controller. My questions are:

- Should I comment my changes in this list, or just in the linux-arm list?
- SSP code for the PXA2XX is placed inside its own arch directories.
Could it be useful to move it into the SPI directories?

Thanks

Miguel Ángel Álvarez

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Re: SPI in IXP4XX

[David Brownell]

On Wednesday 12 November 2008, Miguel Ángel Álvarez wrote:
> Hi
> 
> I have used PXA2XX code to implement SPI in IXP4XX. SPI in both of
> them is implemented using an SSP controller. My questions are:
> 
> - Should I comment my changes in this list, or just in the linux-arm list?

SPI code --> SPI list.  CC the ARM list if you like.


> - SSP code for the PXA2XX is placed inside its own arch directories.
> Could it be useful to move it into the SPI directories?

Eventually the mach-pxa/*ssp*c code should vanish.

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Re: SPI in IXP4XX

[Miguel Ángel Álvarez]

Hi

On Thu, Nov 20, 2008 at 9:56 PM, David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org> wrote:
> On Wednesday 12 November 2008, Miguel Ángel Álvarez wrote:
>> Hi
>>
>> I have used PXA2XX code to implement SPI in IXP4XX. SPI in both of
>> them is implemented using an SSP controller. My questions are:
>>
>> - Should I comment my changes in this list, or just in the linux-arm list?
>
> SPI code --> SPI list.  CC the ARM list if you like.
>
Thanks. That is also my point of view.
>
>> - SSP code for the PXA2XX is placed inside its own arch directories.
>> Could it be useful to move it into the SPI directories?
>
> Eventually the mach-pxa/*ssp*c code should vanish.
>
Vanish? Into what? Who is working on it, and how can I help him
introduce my modifications for ixp4xx?

Thanks

Miguel Ángel Álvarez

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Re: SPI in IXP4XX

[David Brownell]

On Friday 21 November 2008, Miguel Ángel Álvarez wrote:
> > Eventually the mach-pxa/*ssp*c code should vanish.
> >
> Vanish? Into what?

It's basically a nonstandard SPI interface; so, into
the standard interface.

(Of course SSP can be used for stuff that's not SPI.
Like I2S, in sound/soc ...)


> Who is working on it, and how can I help him 
> introduce my modifications for ixp4xx?

I don't know that anyone is working on it.  Which is
why I said "eventually".




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Re: SPI in IXP4XX

[Miguel Ángel Álvarez]

Hi

On Fri, Nov 21, 2008 at 9:48 AM, David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org> wrote:
> On Friday 21 November 2008, Miguel Ángel Álvarez wrote:
>> > Eventually the mach-pxa/*ssp*c code should vanish.
>> >
>> Vanish? Into what?
>
> It's basically a nonstandard SPI interface; so, into
> the standard interface.
>
> (Of course SSP can be used for stuff that's not SPI.
> Like I2S, in sound/soc ...)
>
>
>> Who is working on it, and how can I help him
>> introduce my modifications for ixp4xx?
>
> I don't know that anyone is working on it.  Which is
> why I said "eventually".
>

So... Returning to the main question. I have code for using SSP and
SPI in IXP4XX, and it is based in the PXA2XX. The main problem is that
I do not want to add whole new files for what is clearly just a
modification. However the original code is not accesible because it is
in the mach-pxa2xx directories.

Which decision should I take so that my changes have greater chances
of been accepted? Moving the files of pxa2xx or creating new ones? Or
this is just a bad decision and I should not use the code of pxa2xx at
all?

Thanks

Miguel Ángel

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