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Date: Wed, 1 Nov 2017 10:09:53 +0000 From: Charles Keepax <ckeepax@...nsource.cirrus.com> To: Andrew Jeffery <andrew@...id.au> CC: <linux-gpio@...r.kernel.org>, <linus.walleij@...aro.org>, <robh+dt@...nel.org>, <mark.rutland@....com>, <frowand.list@...il.com>, <joel@....id.au>, <ckeepax@...nsource.wolfsonmicro.com>, <ldewangan@...dia.com>, <ryan_chen@...eedtech.com>, <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>, <openbmc@...ts.ozlabs.org>, <linux-aspeed@...ts.ozlabs.org> Subject: Re: [PATCH v3 1/2] gpio: gpiolib: Generalise state persistence beyond sleep On Wed, Nov 01, 2017 at 03:04:56PM +1100, Andrew Jeffery wrote: > General support for state persistence is added to gpiolib with the > introduction of a new pinconf parameter to propagate the request to > hardware. The existing persistence support for sleep is adapted to > include hardware support if the GPIO driver provides it. Persistence > continues to be enabled by default; in-kernel consumers can opt out, but > userspace (currently) does not have a choice. > > The *_SLEEP_MAY_LOSE_VALUE and *_SLEEP_MAINTAIN_VALUE symbols are > renamed, dropping the SLEEP prefix to reflect that the concept is no > longer sleep-specific. I feel that renaming to just *_MAY_LOSE_VALUE > could initially be misinterpreted, so I've further changed the symbols > to *_TRANSITORY and *_PERSISTENT to address this. > > The sysfs interface is modified only to keep consistency with the > chardev interface in enforcing persistence for userspace exports. > > Signed-off-by: Andrew Jeffery <andrew@...id.au> > --- Reviewed-by: Charles Keepax <ckeepax@...nsource.cirrus.com> Thanks, Charles
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