Hi! On Mon, 2016-05-30 at 21:27 -0700, Srinivas Pandruvada wrote: > Starting from Cherrytrail, multiple generation of Intel processors > offers > on package sensor hub. Several recent tablets, 2-in-1 convertible > laptops > are using ISH instead of external sensor hubs. This resulted in lack > of > support of sensor function like device rotation and auto backlight > adjustment. In addition, depending on the OEM implementation, support > of ISH > is required to support low power sleep states. > > The support of ISH on Linux platforms is not new. Android platforms > with > Intel SoCs had this support for a while submitted by Daniel Drubin. > This patcheset is reusing most of those changes with clean up and > removing Android platform specific changes. > > This series is tested on: > - Lenovo Yoga 260 with Skylake processor > - HP Pavilion x2 detachable with Cherrytrail > > The user mode ABI is still same as external sensor hubs using Linux > IIO. So existing user mode software should still work without change. > This series primarily brings in new HID transport used in ISH. > > This series submitted as a RFC to try on several devices. We have > received request from Linux users who wanted this support. So I hope > all > those users try and give feedback. > Thanks a lot for adding support for this. I have a Lenovo Thinkpad Yoga 260, so I decided to give it a try. I used your patches on kernel 4.6.0 and installed the patched kernel. Now, I see that the device is recognised immediately. I use the iio-sensor-proxy application from [1], and it now recognises the sensors. But changing orientation doesn't seem to do anything, and moreover upon a wakeup from suspend I see the following messages on the journal: Jun 01 15:15:09 tp-yoga260 kernel: [drm] RC6 on Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0001: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0002: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0002: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0002: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: hid-sensor-hub 0044:8086:22D8.0002: timeout waiting for response from ISHTP device Jun 01 15:15:09 tp-yoga260 kernel: PM: resume of devices complete after 37095.288 msecs Also suspend and wakeup seems to be really slow now. Please let me know if there is any other info I can provide. Thanks and best wishes. [1] https://github.com/hadess/iio-sensor-proxy -- Atri Bhattacharya Wed 1 Jun 15:22:32 CEST 2016 Sent from openSUSE Tumbleweed (20160529) (x86_64) on my laptop. -- 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
