On Tue, Apr 12, 2016 at 8:01 AM, Linus Walleij <linus.walleij@xxxxxxxxxx> wrote: > Some types of ST Sensors can be connected to the same IRQ line > as other peripherals using open drain. Add a device tree binding > and a sensor data property to flip the right bit in the interrupt > control register to enable open drain mode on the INT line. > > If the line is set to be open drain, also tag on IRQF_SHARED > to the IRQ flags when requesting the interrupt, as the whole > point of using open drain interrupt lines is to share them with > more than one peripheral (wire-or). > > Cc: devicetree@xxxxxxxxxxxxxxx > Cc: Giuseppe Barba <giuseppe.barba@xxxxxx> > Cc: Denis Ciocca <denis.ciocca@xxxxxx> > Cc: Rob Herring <robh@xxxxxxxxxx> > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > --- > ChangeLog v3->v4: > - Rename DT bool property st,int-pin-open-drain to int-pin-open-drain > - Rob Herring ACKed st,int-pin-open-drain but not including his ACK > on this even though it's close We already have st,irq-open-drain, gpio-open-drain, linux,open-drain and drive-open-drain (from pinctrl). If we want something common, then it should probably be part of interrupt bindings, not something common to IIO. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
