From a0a12e14c8538a766376c3563841fd34e122d9b1 Mon Sep 17 00:00:00 2001
From: Geir Okkenhaug Jerstad <geokkjer@gmail.com>
Date: Mon, 30 Jun 2025 18:56:00 +0200
Subject: [PATCH] Fix touchpad by blacklisting AMD SFH driver

Based on dmesg analysis, found that:
- ITE8353 touchpad is detected but bound to hid-sensor-hub
- AMD Sensor Fusion Hub (amd_sfh) is interfering with touchpad
- Error: 'pcie_mp2_amd 0000:02:00.7: amd_sfh_hid_client_init failed err -95'

Blacklisting amd_sfh module should allow touchpad to work properly.
---
 machines/little-rascal/hardware-configuration.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/machines/little-rascal/hardware-configuration.nix b/machines/little-rascal/hardware-configuration.nix
index b057267..d2f83c2 100644
--- a/machines/little-rascal/hardware-configuration.nix
+++ b/machines/little-rascal/hardware-configuration.nix
@@ -36,6 +36,12 @@
       "i2c_hid"
       "i2c_hid_acpi"
     ];
+    
+    # Blacklist AMD SFH which interferes with touchpad
+    blacklistedKernelModules = [
+      "amd_sfh"  # AMD Sensor Fusion Hub - causes touchpad to be misidentified
+    ];
+    
     extraModulePackages = [];
   };