On 10/10/16 21:57, Jonathan Cameron wrote: > On 10/10/16 08:20, Brian Masney wrote: >> Add ABI documentation from the ISL29018 Data Sheet (FN6619.4, Oct 8, >> 2012) about the infrared suppression that can be controlled >> with the proximity_on_chip_ambient_infrared_suppression sysfs attribute. >> >> Signed-off-by: Brian Masney <masneyb@xxxxxxxxxxxxx> > I'm going to let this and the final move out of staging sit on the > list a while longer to gather reviews. Meh. Long enough ;) Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to ignore it. Thanks, Jonathan > > It does feel like the below is rather cryptic and it might be possible > to use a simpler description... Maybe this is the best we can do. > The naming makes it sound generic, but in reality it's a nasty bit > of custom filtering that is not well described anywhere. > > Jonathan >> --- >> .../ABI/testing/sysfs-bus-iio-light-isl29018 | 19 +++++++++++++++++++ >> 1 file changed, 19 insertions(+) >> create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 >> >> diff --git a/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 b/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 >> new file mode 100644 >> index 0000000..f0ce0a0 >> --- /dev/null >> +++ b/Documentation/ABI/testing/sysfs-bus-iio-light-isl29018 >> @@ -0,0 +1,19 @@ >> +What: /sys/bus/iio/devices/iio:deviceX/proximity_on_chip_ambient_infrared_suppression >> +Date: January 2011 >> +KernelVersion: 2.6.37 >> +Contact: linux-iio@xxxxxxxxxxxxxxx >> +Description: >> + From ISL29018 Data Sheet (FN6619.4, Oct 8, 2012) regarding the >> + infrared suppression: >> + >> + Scheme 0, makes full n (4, 8, 12, 16) bits (unsigned) proximity >> + detection. The range of Scheme 0 proximity count is from 0 to >> + 2^n. Logic 1 of this bit, Scheme 1, makes n-1 (3, 7, 11, 15) >> + bits (2's complementary) proximity_less_ambient detection. The >> + range of Scheme 1 proximity count is from -2^(n-1) to 2^(n-1). >> + The sign bit is extended for resolutions less than 16. While >> + Scheme 0 has wider dynamic range, Scheme 1 proximity detection >> + is less affected by the ambient IR noise variation. >> + >> + 0 Sensing IR from LED and ambient >> + 1 Sensing IR from LED with ambient IR rejection >> > > -- > 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 > _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
