Messages in this thread | | | From | Chris Chiu <> | Date | Tue, 21 Nov 2017 19:54:26 +0800 | Subject | Re: [PATCH] pinctrl: intel: save HOSTSW_OWN register over suspend/resume |
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On Tue, Nov 21, 2017 at 6:52 PM, Mika Westerberg <mika.westerberg@linux.intel.com> wrote: > On Fri, Nov 17, 2017 at 04:11:31PM +0800, Chris Chiu wrote: >> On Fri, Nov 17, 2017 at 2:49 PM, Mika Westerberg >> <mika.westerberg@linux.intel.com> wrote: >> > On Thu, Nov 16, 2017 at 09:27:51PM +0800, Chris Chiu wrote: >> >> On Thu, Nov 16, 2017 at 8:44 PM, Mika Westerberg >> >> <mika.westerberg@linux.intel.com> wrote: >> >> > On Wed, Nov 15, 2017 at 06:19:56PM +0800, Chris Chiu wrote: >> >> >> Hi Mika, >> >> >> I've confirmed with Asus and they said it's the latest BIOS for >> >> >> shipment and verified OK on Windows. So their BIOS team will not do >> >> >> anything for this. >> >> > >> >> > I'll ask around if our Windows people know anything about this. My gut >> >> > feeling is that the Windows driver does not touch HOSTSW_OWN either. >> >> >> >> Thanks. Please let me know if you need any information. I still keep >> >> the machine. >> > >> > Got confirmation from Windows people. So Windows pretty much saves and >> > restores the same registers than we do (padcfg + ie). >> > >> > Have you tried whether s2idle works instead of S3 suspend? You can try >> > it like >> > >> > # echo freeze > /sys/power/state >> > >> > If that works, I'm guessing that this system uses s2idle and that's also >> > what Windows uses and could explain why it works in Windows. >> >> Unfortunately, I cant wake it up from neither power button nor any key >> event after "# echo freeze > /sys/power/state".... > > Yeah, it is S3 platform based on the acpidump you shared. Although > freeze should still work. > > Have you dumped the pin config registers through debugfs before and > after suspend? Are there any other differences except the HOSTSW_OWN > thing?
Yup, I checked the value of the corresponded pin. It shows following before suspend pin 18 (GPIO_18) GPIO 0x40800102 0x00024075
Then after resume pin 18 (GPIO_18) GPIO 0x40800102 0x00024075 [ACPI]
What else register do you suggest me to compare? The PADCFG2 is invalid
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