On Tue, Mar 06, 2018 at 06:57:49AM -0800, Tony Lindgren wrote: > > By using regmap_irq_update_bits to ACK the interrupts we use the masked > > status bits so we take care not to affect any other bits then use > > ack_invert to determine if we clear or set those bits.
> This change to use regmap_irq_update_bits() now breaks things for > me with cpcap interrupts. So it seems to cause a non-inverted mode > regression. There should be no need to read the ack register, I > gues that's the whole idea of having a separate ack register :) Yes, that'd be my expectation as well - the register should be just write only. regmap_update_bits() definitely isn't the right thing here since it will suppress the write part of the read/modify/write cycle if it detects that it didn't actually modify anything as an optimization.
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