On Fri, 2017-03-17 at 02:13 +0000, Pandruvada, Srinivas wrote: > On Thu, 2017-03-16 at 18:20 +0800, Song Hongyan wrote: > > As accelerometer sensor becomes more and more popular, there are > > more > > user scenarios have been developed, "Hinge" is a very important > > usecase > > which needs two accelerometer sensors to calculate the included > > angle > > of keyboard and screen. > > In this case, two accelerometer sensors will be exposed. Currently, > > IIO interface hasn't other way to distinguish two sensors with same > > sensor type, except sensor name. So a new sensor name > > "accel_2nd_3d" > > is added for secondary accelerometer sensor. > > This type of interface will not satisfy all cases. We have some hubs > with many accelerometers attached. Same case is also true even for > discrete sensors. So there should be some framework way to expose > location of sensors. So you're nacking as well? > ACPI has special method called _PLD (Physical Device Location), which > can be used to specify location of any device. So we need to be able > to export such information to user space. We can add for each sensor > the location information. > > I can propose some ABI for exporting location information. There were patches floating around to do this, but they were never finished: http://www.spinics.net/lists/linux-acpi/msg51540.html Cheers -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
