[Bug 204807] Hardware monitoring sensor nct6798d doesn't work unless acpi_enforce_resources=lax is enabled

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https://bugzilla.kernel.org/show_bug.cgi?id=204807

--- Comment #96 from Tom Lloyd (napalmllama@xxxxxxxxx) ---
(In reply to Denis Pauk from comment #88)
> Created attachment 298669 [details]
> POC: Add support for access via Asus WMI to nct6775 by board/vendor name
> detect
> 
> Updated version with check vendor name and fix for possible issues with non
> ASUS motherboards, added names of motherboards have mentioned in bug. I will
> also check possible way for use functions pointers instead conditional
> checks equal to access_wmi. After that I will try to send patch to review.
> 
> (In reply to comment #87)
> > I added my board "ROG STRIX B550-F GAMING (WI-FI)" and added patch against
> > 5.14.1-arch1-1 BIOS 2423 08/10/2021.
> 
> Thank you, I have added your board also.
> 
> (In reply to comment #86)
> > Please add my board name "TUF GAMING B550-PLUS".
> 
> Thank you, I have added it to list. What the distro do you use? 
> 
> For debian it can be:
> * git clone
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> * cd linux-stable
> * git check v5.14
> * cp /boot/config-5.10.0-8-amd64 .config
> * make CC="ccache gcc" -j 32
> * make CC="ccache gcc" -j 32 bindeb-pkg
> * sudo dpkg -i ../linux-image-5.14.0+_5.14.0+-1_amd64.deb
> 
> Look to https://wiki.debian.org/BuildADebianKernelPackage

Denis,

I'm on Gentoo, and already have the kernel sources unpacked and ready to go
(5.13.13-gentoo).  I did the following:

# rmmod nct6775
# cd /usrc/src/linux
# patch -i ~/nct6775_wmi_v3.patch -p1
# make modules -j12
# mv
/lib/modules/5.13.13-gentoo-splig-3-sensors/kernel/drivers/hwmon/nct6775.ko
/lib/modules/5.13.13-gentoo-splig-3-sensors/kernel/drivers/hwmon/nct6775.ko.orig
# cp drivers/hwmon/nct6775.ko
/lib/modules/5.13.13-gentoo-splig-3-sensors/kernel/drivers/hwmon/nct6775.ko
# modprobe nct6775

"sensors" output remains the same:
nct6798-isa-0290
Adapter: ISA adapter
in0:                      376.00 mV (min =  +0.00 V, max =  +1.74 V)
in1:                      1000.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in2:                        3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in3:                        3.30 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in4:                        1.01 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in5:                      880.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in6:                      256.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in7:                        3.39 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in8:                        3.28 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in9:                      904.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in10:                     264.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in11:                       1.02 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in12:                       1.04 V  (min =  +0.00 V, max =  +0.00 V)  ALARM
in13:                     368.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
in14:                     272.00 mV (min =  +0.00 V, max =  +0.00 V)  ALARM
fan1:                        0 RPM  (min =    0 RPM)
fan2:                      716 RPM  (min =    0 RPM)
fan3:                      496 RPM  (min =    0 RPM)
fan4:                      327 RPM  (min =    0 RPM)
fan5:                        0 RPM  (min =    0 RPM)
fan6:                        0 RPM  (min =    0 RPM)
fan7:                        0 RPM  (min =    0 RPM)
SYSTIN:                    +33.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor =
thermistor
CPUTIN:                    +35.0°C  (high = +80.0°C, hyst = +75.0°C)  sensor =
thermistor
AUXTIN0:                   +85.0°C    sensor = thermistor
AUXTIN1:                   +55.0°C    sensor = thermistor
AUXTIN2:                   -61.0°C    sensor = thermistor
AUXTIN3:                   +79.0°C    sensor = thermistor
PECI Agent 0 Calibration:  +34.5°C  
PCH_CHIP_CPU_MAX_TEMP:      +0.0°C  
PCH_CHIP_TEMP:              +0.0°C  
PCH_CPU_TEMP:               +0.0°C  
intrusion0:               ALARM
intrusion1:               ALARM
beep_enable:              disabled

dmesg with tree module:
[ 3596.867638] nct6775: Found NCT6798D or compatible chip at 0x2e:0x290
[ 3596.867642] ACPI Warning: SystemIO range
0x0000000000000295-0x0000000000000296 conflicts with OpRegion
0x0000000000000290-0x0000000000000299 (\AMW0.SHWM) (20210331/utaddress-204)
[ 3596.867645] ACPI: OSL: Resource conflict; ACPI support missing from driver?
[ 3596.867646] ACPI: OSL: Resource conflict: System may be unstable or behave
erratically

dmesg with patched module:
[ 3681.885428] nct6775: Using Asus WMI to access chip
[ 3681.885468] nct6775: Found NCT6798D or compatible chip at 0x2e:0x290

/proc/cmdline:
BOOT_IMAGE=/boot/vmlinuz-5.13.13-gentoo-splig-3-sensors root=/dev/nvme0n1p3 ro
module_blacklist=nouveau acpi_enforce_resources=lax


I hope that's of some use.  The differing dmesg output suggests that the patch
is helping, but shouldn't there be a change (improvement) to the sensors
output?

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