Re: New driver for a SPI controller equipped with HW queue

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On Tue, Dec 04, 2018 at 09:06:10AM +0000, Mirco Di Salvo wrote:

> > You'd probably want to be starting at transfer() and completely ignoring
> > the core message queue, trying to use the core queue and simultaneously
> > offload it to hardware isn't going to end well.  

> Using trasfer() would be the best for us but we saw that the use of transfer() is deprecated 
> while the use of core queue (transfer_one() / transfer_one_message()) is strongly advised. 
> Is that true?

Yes, like I say vanishingly few controllers have this feature and
controllers that do have this feature need to mirror all the features
that the core offers in software so it's really not something that's
recommended.

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