[PATCH] hwmon: (yogafan) Add support for new Lenovo models
From: Sergio Melas
Date: Thu Aug 06 2026 - 09:16:53 EST
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@xxxxxxxxx>
---
Documentation/hwmon/yogafan.rst | 27 ++++++++++++-
drivers/hwmon/yogafan.c | 69 +++++++++++++++++++++++++++++----
2 files changed, 87 insertions(+), 9 deletions(-)
diff --git a/Documentation/hwmon/yogafan.rst b/Documentation/hwmon/yogafan.rst
index 68761947a..6395c94f4 100644
--- a/Documentation/hwmon/yogafan.rst
+++ b/Documentation/hwmon/yogafan.rst
@@ -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+ and spec sheets for active and withdrawn Lenovo laptop models.
+ https://psref.lenovo.com/l/withdrawn/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)
diff --git a/drivers/hwmon/yogafan.c b/drivers/hwmon/yogafan.c
index 0a41b8672..48fa5148d 100644
--- a/drivers/hwmon/yogafan.c
+++ b/drivers/hwmon/yogafan.c
@@ -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);
--
2.55.0