qcom firmware / scm interface (was Re: [GIT PULL] qcom SoC changes for v3.20)

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>>> I'd be OK with merging this, send a request and tag. Would that let
>>> the DRM folks make progress too?
>> 
>> Will do, I don’t think it will address the DRM folks needs as they need access to make firmware calls from the DRM driver.
>> 
>>> If you need a common place for this, drivers/firmware seems like a
>>> better home than drivers/soc.
>> 
>> Agreed, what’s you take than on moving to use firmware_ops as defined in arch/arm and extended it or just leaving this as a qcom specific firmware interface?
> 
> Are there any other SoCs out there with similar requirements on
> firmware interfaces? I think most of them so far have been fairly
> simple compared to the complexity of the qualcomm firmware.
> 
> Would it make sense to use firmware_ops for the common pieces and have
> direct smc calls for the rest? I'm not sure that would buy us all that
> much. Hm.
> 
> Well, at least it's an internal implementation detail. If we move it
> now and find a better way to do it down the road it can be refactored.

So I’ve been looking at the ARM firmware_ops and I’m not sure it makes much sense to try and contort either the QCOM SCM interface to match or the other way around.  The firmware_ops don’t really match what the qcom scm interface exposes and trying to make it would just seem to make the firmware_ops to QCOM specific to be of any value.

I’ll look at cleaning up the SCM code and moving it to drivers/firmware instead of drivers/soc/qcom if that is more desirable.

- k

-- 
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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