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@xxxxxxxx> > --- > drivers/gpio/gpiolib-of.c | 6 ++-- > drivers/gpio/gpiolib-sysfs.c | 14 +++++--- > drivers/gpio/gpiolib.c | 61 ++++++++++++++++++++++++++++++--- > drivers/gpio/gpiolib.h | 2 +- > include/dt-bindings/gpio/gpio.h | 6 ++-- Acked-by: Rob Herring <robh@xxxxxxxxxx> > include/linux/gpio/consumer.h | 8 +++++ > include/linux/gpio/machine.h | 4 +-- > include/linux/of_gpio.h | 2 +- > include/linux/pinctrl/pinconf-generic.h | 2 ++ > 9 files changed, 87 insertions(+), 18 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
