Le jeudi 31 décembre 2015 à 22:14 +0000, Mark Brown a écrit : > On Thu, Dec 31, 2015 at 10:59:06PM +0100, Paul Kocialkowski wrote: > > > I understand, thanks for pointing this out. Well, for my use case, there > > is no use in disabling the chip at any point as it powers the external > > mmc. > > Presumably someone might decide not to use the MMC in some case (perhaps > only mounting it when explicitly needed in order to save power for > example, or the MMC subsystem might figure out a way to power down an > idle MMC block device).
Makes sense, I'll keep that in mind. > > Would you agree to have the enable pin handled directly (and by that, I > > mean enabled once, when requested, as I first suggested in the patchset) > > in the driver then? > > That's probably fine, or do it via runtime PM (the framework is fairly > simple to use, I'll probably go add support in the core for it in the > next day or two as this seems like a sensible use case). I can't > remember if this device is a MFD or not and I'm just on my way out the > door. Runtime PM seems like a good fit (though I hadn't heard about it before: you can guess I'm fairly new to kernel development), please let me know whether you end up implementing it so I can try to handle the GPIO this way. Thanks! -- Paul Kocialkowski, Replicant developer Replicant is a fully free Android distribution running on several devices, a free software mobile operating system putting the emphasis on freedom and privacy/security. Website: https://www.replicant.us/ Blog: https://blog.replicant.us/ Wiki/tracker/forums: https://redmine.replicant.us/
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