Messages in this thread | | | From | Kuninori Morimoto <> | Subject | Re: PM regression in next | Date | Mon, 15 Jan 2018 01:45:51 +0000 |
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Hi all
> > > Most devices have one regmap per device which can be retrieved with > > > dev_get_regmap(), it's the attempt to use that which I suspect is > > > broken. Like I said snd_soc_codec_init_regmap() ought to fix things if > > > that's the issue. > > > OK. Adding Peter to loop as it's his driver after all. Not sure > > how well mixing regmap register access to the same module with > > cached twl4030_read() would work :) > > Yes, that local cache is not a super good idea any more and hopefully > redundant. > > > Maybe there should also be some big warning happening if > > snd_soc_codec_init_regmap() is now needed and no regmap is > > found? > > Some devices just plain don't have registers at all (perhaps GPIOs or > just stub drivers providing capability information). However we should > be screaming loudly about the fact that the I/O we tried to do fails, > that clearly shouldn't be being ignored.
I'm sorry that my patch breaks your drivers. It seems removing .read/.write callback was too much aggressive. I hope your driver will be OK by using regmap. In worst case, we can back .read/.write, but it will be component driver side.
Best regards --- Kuninori Morimoto
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