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hwmon: (yogafan) Add support for new Lenovo models

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Add DMI quirk entries and map correct ACPI paths and configurations for
additional Lenovo laptop models including the LOQ 15IAX9,
XiaoXin Pro 13ARE 2020, IdeaPad 3 15ALC6, Legion Pro 7 16AFR10H,
Yoga Pro 7 14IAH10, and Yoga 7 16ARP8.

Reorder the DMI quirk table to evaluate specific model matches before
generic family fallbacks, preventing DMI shadowing.

Signed-off-by: Sergio Melas <sergiomelas@gmail.com>
Link: https://lore.kernel.org/r/20260806131103.19104-1-sergiomelas@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Sergio Melas
2026-08-06 15:11:03 +02:00
committed by Guenter Roeck
parent 62f8ed1d03
commit 9c110a4676
2 changed files with 87 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
Documentation/hwmon/yogafan.rst
View File

@@ -99,6 +99,11 @@ immediately to ensure the user knows the fan has stopped.
82XV / 83DV | LOQ 15/16 | 0xFE/0xFF | \_SB.PCI0.LPC0.EC0.FANS /FA2S | 16-bit | 1
83AK | ThinkBook G6 | 0x06 | \_SB.PCI0.LPC0.EC0.FAN0 | 8-bit | 100
81X1 | Flex 5 | 0x06 | \_SB.PCI0.LPC0.EC0.FAN0 | 8-bit | 100
83KF | XiaoXinPro 13ARE | 0x06/0xFE | \_SB.PCI0.LPC0.EC0.FANS/FA2S | 8-bit | 100
82KU | IdeaPad 3 15ALC6 | 0x06 | \_SB.PCI0.LPC0.EC0.FAN0 | 8-bit | 100
83RU | Legion Pro 7 16 | 0x03/0x06 | \_SB.PCI0.LPC0.EC0.FANS/FA2S | 8-bit | 100
83KF | Yoga Pro 7 14IAH | 0x06 | \_SB.PC00.LPCB.EC0.FANS | 8-bit | 100
83BS | Yoga 7 16ARP8 | 0x03/0x06 | \_SB.PCI0.LPC0.EC0.FANS/FA2S | 8-bit | 100
*Legacy* | Pre-2020 Models | 0x06 | \_SB.PCI0.LPC.EC.FAN0 | 8-bit | 100
----------------------------------------------------------------------------------------------------
@@ -117,7 +122,6 @@ METHODOLOGY & IDENTIFICATION:
- 8-bit (Multiplier 100): Standard for Yoga/IdeaPad. Raw values (0-255).
- 16-bit (Multiplier 1): Standard for Legion/LOQ. Two registers (0xFE/0xFF).
References
----------
@@ -136,3 +140,24 @@ References
4. **Lenovo IdeaPad Laptop Driver:** Reference for DMI-based hardware
feature gating in Lenovo laptops.
https://github.com/torvalds/linux/blob/master/drivers/platform/x86/lenovo/ideapad-laptop.c
5. **Lenovo Product Specifications Reference (PSREF):** Official hardware layout index
and spec sheets for active and withdrawn Lenovo laptop models.
https://psref.lenovo.com/l/withdrawn/
6. **Yogafan Master Quirk Database:** Master spreadsheet mapping Lenovo Product
Specifications Reference (PSREF) to explicit EC offsets, register widths, paths, and multipliers.
https://github.com/sergiomelas/lenovo-linux-drivers/blob/main/Lenovo_Drivers/Prototype/PSREF/yogafan_v3_quirks_database.ods
7. **Yogafan ACPI DSDT Repository:** Central repository containing user-contributed raw
and decompiled ACPI DSDT firmware dumps used for path verification and hardware expansions.
https://github.com/sergiomelas/lenovo-linux-drivers/tree/main/Lenovo_Drivers/Prototype/DSDT
Contributors & DSDT Providers:
------------------------------
- **Sarbajit Sarkar** (Lenovo LOQ 15IAX9)
- **HinataKato** (XiaoXin Pro 13ARE 2020 - 83KF)
- **PenPenIsGod** (IdeaPad 3 15ALC6 - 82KU & Legion Pro 7 16AFR10H - 83RU)
- **unlockxiaom** (Legion Pro 7 16AFR10H - 83RU, Yoga Pro 7 14IAH10 - 83KF, ThinkCentre M80q)
- **Phani Pavan K** (Yoga Pro 7 14IAH10 - 83KF)
- **Splarkszter** (Yoga 7 16ARP8 - 83BS)

69
drivers/hwmon/yogafan.c
View File

@@ -53,6 +53,7 @@ struct yoga_fan_data {
};
/* Specific configurations mapped via DMI */
static const struct yogafan_config yoga_8bit_fans_cfg = {
.multiplier = 100,
.fan_count = 1,
@@ -77,6 +78,18 @@ static const struct yogafan_config loq_15iax9_8bit_dual_cfg = {
.paths = { "\\_SB.PC00.LPCB.EC0.FA1S", "\\_SB.PC00.LPCB.EC0.FA2S" }
};
static const struct yogafan_config xiaoxin_8bit_dual_cfg = {
.multiplier = 100,
.fan_count = 2,
.paths = { "\\_SB.PCI0.LPC0.EC0.FANS", "\\_SB.PCI0.LPC0.EC0.FA2S" }
};
static const struct yogafan_config yoga_pro_7_14iah10_cfg = {
.multiplier = 100,
.fan_count = 1,
.paths = { "\\_SB.PC00.LPCB.EC0.FANS", NULL }
};
static void apply_rllag_filter(struct yoga_fan_data *data, int idx, long raw_rpm)
{
ktime_t now = ktime_get_boottime();
@@ -176,6 +189,54 @@ static const struct hwmon_chip_info yoga_fan_chip_info = {
};
static const struct dmi_system_id yogafan_quirks[] = {
{
.ident = "Lenovo LOQ 15IAX9",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "LOQ 15IAX9"),
},
.driver_data = (void *)&loq_15iax9_8bit_dual_cfg,
},
{
.ident = "Lenovo XiaoXin Pro 13ARE 2020",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "XiaoXinPro-13ARE 2020"),
},
.driver_data = (void *)&xiaoxin_8bit_dual_cfg,
},
{
.ident = "Lenovo IdeaPad 3 15ALC6",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "IdeaPad 3 15ALC6"),
},
.driver_data = (void *)&ideapad_8bit_fan0_cfg,
},
{
.ident = "Lenovo Legion Pro 7 16AFR10H",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "Legion Pro 7 16AFR10H"),
},
.driver_data = (void *)&xiaoxin_8bit_dual_cfg,
},
{
.ident = "Lenovo Yoga Pro 7 14IAH10",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "Yoga Pro 7 14IAH10"),
},
.driver_data = (void *)&yoga_pro_7_14iah10_cfg,
},
{
.ident = "Lenovo Yoga 7 16ARP8",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "Yoga 7 16ARP8"),
},
.driver_data = (void *)&xiaoxin_8bit_dual_cfg,
},
{
.ident = "Lenovo Yoga",
.matches = {
@@ -200,14 +261,6 @@ static const struct dmi_system_id yogafan_quirks[] = {
},
.driver_data = (void *)&ideapad_8bit_fan0_cfg,
},
{
.ident = "Lenovo LOQ 15IAX9",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_FAMILY, "LOQ 15IAX9"),
},
.driver_data = (void *)&loq_15iax9_8bit_dual_cfg,
},
{ }
};
MODULE_DEVICE_TABLE(dmi, yogafan_quirks);