On 17 March 2017 13:16:34 GMT+00:00, Bastien Nocera <hadess@xxxxxxxxxx> wrote: >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 We have the location element as defined for the cross_ec sensors. Taking that general would be fine with me. Current options are base and lid, but can be extended to include more. J > >Cheers >-- >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 -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- 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
