From: Bastien Nocera <firstname.lastname@example.org> To: "Pandruvada, Srinivas" <email@example.com>, "firstname.lastname@example.org" <email@example.com>, "Song, Hongyan" <firstname.lastname@example.org>, "email@example.com" <firstname.lastname@example.org> Cc: "email@example.com" <firstname.lastname@example.org>, "email@example.com" <firstname.lastname@example.org> Subject: Re: [PATCH] iio: hid: hid-sensor-accel-3d: Add second ACC sensor support Date: Fri, 17 Mar 2017 14:16:34 +0100 [thread overview] Message-ID: <email@example.com> (raw) In-Reply-To: <firstname.lastname@example.org> 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
next prev parent reply other threads:[~2017-03-17 13:16 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-03-16 10:20 Song Hongyan 2017-03-16 10:20 ` Song Hongyan 2017-03-16 12:01 ` Bastien Nocera [not found] ` <1489665702.18490.12.camel-0MeiytkfxGOsTnJN9+BGXg@public.gmane.org> 2017-03-17 1:21 ` Song, Hongyan 2017-03-17 1:21 ` Song, Hongyan 2017-03-17 13:14 ` Bastien Nocera [not found] ` <1489659652-35608-1-git-send-email-hongyan.song-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> 2017-03-17 2:13 ` Pandruvada, Srinivas 2017-03-17 2:13 ` Pandruvada, Srinivas 2017-03-17 13:16 ` Bastien Nocera [this message] [not found] ` <1489756594.18490.22.camel-0MeiytkfxGOsTnJN9+BGXg@public.gmane.org> 2017-03-17 13:31 ` Jonathan Cameron 2017-03-17 13:31 ` Jonathan Cameron 2017-03-17 16:22 ` Pandruvada, Srinivas 2017-03-17 16:22 ` Pandruvada, Srinivas 2017-03-18 0:24 ` Milton Mobley
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