Re: [RFC PATCH 0/3] media: qcom: camss: CAMSS Offline Processing Engine support

[Bryan O'Donoghue]

On 23/03/2026 12:58, Loic Poulain wrote:
> This first version is intentionally minimalistic. It provides a working
> configuration using a fixed set of static processing parameters, mainly
> to achieve correct and good-quality debayering.

You need the other 50% of the kernel side - the generation of bayer 
statistics in the IFE, as well as generation of parameters to feed back 
into the OPE - which requires a user-space implementation too, so a lot 
of work there too.

I'd also say when we have an ICP we should be using it via the HFI 
protocol, thus burying all of the IPE/OPE BPS and CDM complexity in the 
firmware.

Understood Agatti has no ICP so you're limited to direct OPE/IFE 
register access here. For HFI capable platforms - the majority - HFI is 
the way to go.

I'll publish an RFC for Hamoa for that soonish so we can make sure both 
coexist.

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bod