Add Support for Legion 7 Y740-15ICHg (81HE006MGE)

[minemo]

Model and Debug Info

Distribution: Manjaro 24.0.7-240821
Model name: Legion 7 Y740-15ICHg
CPU model: Intel Core i7-8750H
GPU model: Nvidia RTX 2060
Keyboard backlight: RGB with brightness control
Light in lid or logo: yes
Light at IO-Ports at back: yes

Output of sudo dmidecode -t system. Please remove Serial Number and UUID for privacy:

# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.1 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: LENOVO
	Product Name: 81HE
	Version: Lenovo Legion Y740-15ICHg
	Serial Number: ########
	UUID: ########
	Wake-up Type: Power Switch
	SKU Number: LENOVO_MT_81HE_BU_idea_FM_Legion Y740-15ICHg
	Family: Legion Y740-15ICHg

Handle 0x001F, DMI type 12, 5 bytes
System Configuration Options
	Option 1: ConfigOptions1
	Option 2: ConfigOptions2
	Option 3: ConfigOptions3

Handle 0x0024, DMI type 15, 29 bytes
System Event Log
	Area Length: 0 bytes
	Header Start Offset: 0x0000
	Header Length: 8192 bytes
	Data Start Offset: 0x2000
	Access Method: General-purpose non-volatile data functions
	Access Address: 0x0000
	Status: Valid, Not Full
	Change Token: 0x12345678
	Header Format: OEM-specific
	Supported Log Type Descriptors: 3
	Descriptor 1: POST memory resize
	Data Format 1: None
	Descriptor 2: POST error
	Data Format 2: POST results bitmap
	Descriptor 3: Log area reset/cleared
	Data Format 3: None

Handle 0x0031, DMI type 32, 11 bytes
System Boot Information
	Status: No errors detected

Output of sudo dmidecode -t bios:

# dmidecode 3.6
Getting SMBIOS data from sysfs.
SMBIOS 3.0.1 present.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: LENOVO
	Version: AVCN22WW(V1.12)
	Release Date: 07/20/2020
	Address: 0xE0000
	Runtime Size: 128 kB
	ROM Size: 10 MB
	Characteristics:
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		EDD is supported
		Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
		Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
		5.25"/360 kB floppy services are supported (int 13h)
		5.25"/1.2 MB floppy services are supported (int 13h)
		3.5"/720 kB floppy services are supported (int 13h)
		3.5"/2.88 MB floppy services are supported (int 13h)
		8042 keyboard services are supported (int 9h)
		CGA/mono video services are supported (int 10h)
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 1.22
	Firmware Revision: 1.22

Handle 0x0020, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Long
	Installable Languages: 8
		en|US|iso8859-1,0
		fr|FR|iso8859-1,0
		zh|TW|unicode,0
		ja|JP|unicode,0
		it|IT|iso8859-1,0
		es|ES|iso8859-1,0
		de|DE|iso8859-1,0
		pt|PT|iso8859-1,0
	Currently Installed Language: en|US|iso8859-1,0

Output of sudo cat /sys/kernel/debug/legion/fancurve:

EC Chip ID: ffff
EC Chip Version: ffff
legion_laptop features: fancurve powermode platformprofile platformprofilenotify minifancurve
legion_laptop ec_readonly: 0
ACPI CFG error: 0
ACPI CFG: 4228710420
temperature access method: 1
CPU temperature error: 0
CPU temperature: 255
CPU temperature EC error: 0
CPU temperature EC: 255
CPU temperature ACPI error: -5
CPU temperature ACPI: 255
CPU temperature WMI error: 0
CPU temperature WMI: 45
CPU temperature WMI2 error: -14
CPU temperature WMI2: 45
CPU temperature WMI3 error: -14
CPU temperature WMI3: 45
GPU temperature error: 0
GPU temperature: 255
GPU temperature EC error: 0
GPU temperature EC: 255
GPU temperature ACPI error: -5
GPU temperature ACPI: 255
GPU temperature WMI error: 0
GPU temperature WMI: 44
GPU temperature WMI2 error: -14
GPU temperature WMI2: 44
GPU temperature WMI3 error: -14
GPU temperature WMI3: 44
fan speed access method: 1
1 fanspeed error: 0
1 fanspeed: 65535
1 fanspeed EC error: 0
1 fanspeed EC: 65535
1 fanspeed ACPI error: -5
1 fanspeed ACPI: 65535
1 fanspeed WMI error: 0
1 fanspeed WMI: 1600
1 fanspeed WMI2 error: -14
1 fanspeed WMI2: 1600
1 fanspeed WMI3 error: -14
1 fanspeed WMI3: 1600
2 fanspeed error: 0
2 fanspeed: 65535
2 fanspeed EC error: 0
2 fanspeed EC: 65535
2 fanspeed ACPI error: -5
2 fanspeed ACPI: 65535
2 fanspeed WMI error: 0
2 fanspeed WMI: 1600
2 fanspeed WMI2 error: -14
2 fanspeed WMI2: 1600
2 fanspeed WMI3 error: -14
2 fanspeed WMI3: 1600
powermode access method: 3
powermode error: 0
powermode: 3
powermode EC error: 0
powermode EC: 255
powermode ACPI error: -5
powermode ACPI: 0
powermode WMI error: 0
powermode WMI: 3
has custom powermode: 1
ACPI rapidcharge error: 0
ACPI rapidcharge: 0
WMI backlight 2 state: 0
WMI backlight 3 state: -5
WMI light IO port: -5
WMI light Y logo/lid: -5
EC minifancurve feature enabled: 1
EC minifancurve on cool: error
EC lockfancontroller error: -1
EC lockfancontroller: error
fanfullspeed error: -22
fanfullspeed: 0
fanfullspeed EC error: -1
fanfullspeed EC: 0
EC fan curve current point id: 10
EC fan curve points size: 10
Current fan curve in hardware:
rpm1|rpm2|acceleration|deceleration|cpu_min_temp|cpu_max_temp|gpu_min_temp|gpu_max_temp|ic_min_temp|ic_max_temp
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
25500	 25500	 255	 255	 255	 255	 255	 255	 255	 255
=====================
Current fan curve in hardware (WMI; might be empty)
rpm1|rpm2|acceleration|deceleration|cpu_min_temp|cpu_max_temp|gpu_min_temp|gpu_max_temp|ic_min_temp|ic_max_temp
=====================