TongFang EC and WMI Stuff

tonfang_wmi.h

https://github.com/tuxedocomputers/tuxedo-cc-wmi/blob/master/src/tongfang_wmi.h

#define UNIWILL_WMI_MGMT_GUID_BA            "ABBC0F6D-8EA1-11D1-00A0-C90629100000"
#define UNIWILL_WMI_MGMT_GUID_BB            "ABBC0F6E-8EA1-11D1-00A0-C90629100000"
#define UNIWILL_WMI_MGMT_GUID_BC            "ABBC0F6F-8EA1-11D1-00A0-C90629100000"

#define UNIWILL_WMI_EVENT_GUID_0            "ABBC0F70-8EA1-11D1-00A0-C90629100000"
#define UNIWILL_WMI_EVENT_GUID_1            "ABBC0F71-8EA1-11D1-00A0-C90629100000"
#define UNIWILL_WMI_EVENT_GUID_2            "ABBC0F72-8EA1-11D1-00A0-C90629100000"

https://github.com/tuxedocomputers/tuxedo-cc-wmi/blob/master/src/tuxedo_cc_wmi_ioctl.h

#define IOCTL_MAGIC 0xEC

#define MAGIC_READ_UW   IOCTL_MAGIC + 2
#define MAGIC_WRITE_UW  IOCTL_MAGIC + 3

// General
#define R_MOD_VERSION   _IOR(IOCTL_MAGIC, 0x00, char*)

#define R_HWCHECK_CL    _IOR(IOCTL_MAGIC, 0x05, char*)
#define R_HWCHECK_UW    _IOR(IOCTL_MAGIC, 0x06, char*)

// Read
#define R_UW_FANSPEED       _IOR(MAGIC_READ_UW, 0x10, int32_t*)
#define R_UW_FAN_TEMP       _IOR(MAGIC_READ_UW, 0x11, int32_t*)
#define R_UW_MODE           _IOR(MAGIC_READ_UW, 0x12, int32_t*)
#define R_UW_MODE_ENABLE    _IOR(MAGIC_READ_UW, 0x13, int32_t*)

// Write
#define W_UW_FANSPEED       _IOW(MAGIC_WRITE_UW, 0x10, int32_t*)
#define W_UW_MODE           _IOW(MAGIC_WRITE_UW, 0x11, int32_t*)
#define W_UW_MODE_ENABLE    _IOW(MAGIC_WRITE_UW, 0x12, int32_t*)

https://www.reddit.com/r/AMDLaptops/comments/hzumdp/why_tuxedo_pulse_15_over_kde_slimbook_linux_app/fzn7dm2/

Install the tuxedo-cc-wmi kernel module (if you haven't done so through the script) and make sure it's the latest version (0.1.4) which should expose a new /dev/tuxedo_cc_wmi device. To issue a ioctl from the command line you can use this tool (need to build yourself): https://github.com/jerome-pouiller/ioctl

Then run sudo ./ioctl /dev/tuxedo_cc_wmi 0x8008ee10|hexdump -C to query fan speed, use 0x8008ee11 for fan temperature. The constants come from https://github.com/tuxedocomputers/tuxedo-cc-wmi/blob/master/src/tuxedo_cc_wmi_ioctl.h, R_UW_FANSPEED and R_UW_FAN_TEMP. You will have to find out the interpretation of the resulting hex values yourself.

I don't have a Tongfang (yet), so it's somewhat of a wild guess but I just recently found out that I can fix the broken BIOS fan behavior of my super old Tuxedo/Clevo using Tuxedo Control Center after bearing with the noise (and inflicting it on coworkers) for almost 8 years... (I tried the other constants for the Clevo which gave some reasonable output, i.e. the first byte seems to be fan speed with 0 being off and 255 being full speed).

https://github.com/tuxedocomputers/tuxedo-cc-wmi/blob/master/src/tuxedo_cc_wmi.c

From control center:

https://github.com/tuxedocomputers/tuxedo-control-center/tree/master/src/native-lib

https://github.com/tuxedocomputers/tuxedo-fan-control/blob/master/src/common/ec_access.ts

https://github.com/tuxedocomputers/tuxedo-fan-control/blob/master/src/common/daemonworker.ts

https://github.com/tuxedocomputers/tuxedo-fan-control/blob/master/src/common/fanTable.ts

Writing a WMI driver (2010)

https://lwn.net/Articles/391230/

Decompile DSDT from ACPI https://lwn.net/Articles/367630/
- https://wiki.archlinux.org/index.php/DSDT

ACPI EC modes for Lenovo:

https://github.com/rizsotto/acpi_call

https://wiki.archlinux.org/index.php/Lenovo_IdeaPad_S540_13ARE#Tips_and_tricks

yay -S acpi_call-dkms
sudo modprobe acpi_call

Set it to Intelligent Cooling mode:
$ echo '\_SB.PCI0.LPC0.EC0.VPC0.DYTC 0x000FB001' | sudo tee /proc/acpi/call
Set it to Extreme Performance mode:
$ echo '\_SB.PCI0.LPC0.EC0.VPC0.DYTC 0x0012B001' | sudo tee /proc/acpi/call
Set it to Battery Saving mode:
$ echo '\_SB.PCI0.LPC0.EC0.VPC0.DYTC 0x0013B001' | sudo tee /proc/acpi/call
To verify your setting:
$ echo '\_SB.PCI0.LPC0.EC0.FCMO' | sudo tee /proc/acpi/call
$ sudo cat /proc/acpi/call | cut -d '' -f1
where 0x0 stands for Intelligent Cooling, 0x1 stands for Extreme Performance and 0x2 stands for Battery Saving.