From 8d840dad456f88374d8a3b03851452a280d6ee50 Mon Sep 17 00:00:00 2001 From: Andrew Onyshchuk Date: Thu, 6 Aug 2026 08:44:17 -0700 Subject: [PATCH] platform/x86: thinkpad_acpi: Fix fan speed reporting on Edge E330 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The ThinkPad Edge E330 with H3 firmware uses the non-standard EC fan register block. Without a matching quirk, thinkpad_acpi reads the legacy tachometer registers and reports 0 RPM. Add the H3 BIOS family to TPACPI_FAN_NS so the driver reads the fan period from EC register 0x95 using the existing non-standard reporting path. Tested on a ThinkPad Edge E330 with BIOS H3ET77WW and EC H3EC35WW. Signed-off-by: Andrew Onyshchuk Reviewed-by: Mark Pearson Link: https://patch.msgid.link/20260806154417.618575-1-andryk.rv@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- drivers/platform/x86/lenovo/thinkpad_acpi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/x86/lenovo/thinkpad_acpi.c b/drivers/platform/x86/lenovo/thinkpad_acpi.c index efc7784f11d1..60a2312f7d6b 100644 --- a/drivers/platform/x86/lenovo/thinkpad_acpi.c +++ b/drivers/platform/x86/lenovo/thinkpad_acpi.c @@ -8845,6 +8845,7 @@ static const struct tpacpi_quirk fan_quirk_table[] __initconst = { TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */ TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */ TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */ + TPACPI_Q_LNV('H', '3', TPACPI_FAN_NS), /* Edge E330 */ TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */