On Wed, May 13, 2015 at 04:24:16PM +0200, Kast Bernd wrote: > This patch is partially based on Felipe Contrera's earlier patch, that > was discussed here: https://lkml.org/lkml/2013/10/8/800 > Some problems of that patch are solved, now: > > 1) The main obstacle for the earlier patch seemed to be the use of > virt_to_phys, which is accepted, now > > 2) random memory corruption occurred on my notebook, thus DMA-able memory > is allocated now, which solves this problem > > 3) hwmon interface is used instead of the thermal interface, as a > hwmon device is already set up by this driver and seemed more > appropriate than the thermal interface > > 4) Calling the ACPI-functions was modularized thus it's possible to call > some multifunctions easily, now (by using > asus_wmi_evaluate_method_agfn). > > Unfortunately the WMI doesn't support controlling both fans on > a dual-fan notebook because of an restriction in the acpi-method > "SFNS", that is callable through the wmi. If "SFNV" would be called > directly even dual fan configurations could be controlled, but not by using > wmi. > > Speed readings only work on auto-mode, thus "-1" will be reported in > manual mode. > Additionally the speed readings are reported as hundreds of RPM thus > they are not too precise. > > This patch is tested only on one notebook (N551JK) but a similar module, > that contained some code to try to control the second fan also, was > reported to work on an UX32VD, at least for the first fan. > > As Felipe already mentioned the low-level functions are described here: > http://forum.notebookreview.com/threads/fan-control-on-asus-prime-ux31-ux31a-ux32a-ux32vd.705656/ > > Signed-off-by: Kast Bernd <kastbernd@xxxxxx> > Acked-By: Corentin Chary <corentin.chary@xxxxxxxxx> Acked-by (lowercase b, checkpatch complains, picky thing, but people have scripts that run against this stuff, so it's important). I fixed it up locally. > Cc: Corentin Chary <corentin.chary@xxxxxxxxx> > Cc: Darren Hart <dvhart@xxxxxxxxxxxxx> > Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx> > Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> Queued to next for 4.2. Thanks Kast. -- Darren Hart Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
