[PATCH] hwmon: (yogafan) Add support for new Lenovo models

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 <[email protected]>
---
 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+   and spec sheets for active and withdrawn Lenovo laptop models.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