From 065bae1c89e159892b491500fab4cf6eee31e91d Mon Sep 17 00:00:00 2001
From: Leah Amelia Chen <hi@pluie.me>
Date: Tue, 8 Jul 2025 18:01:07 +0000
Subject: [PATCH] lenovo/ideapad/14iah10: init

---
 flake.nix                          |  1 +
 lenovo/ideapad/14iah10/README.md   |  7 ++++++
 lenovo/ideapad/14iah10/default.nix | 40 ++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 lenovo/ideapad/14iah10/README.md
 create mode 100644 lenovo/ideapad/14iah10/default.nix

diff --git a/flake.nix b/flake.nix
index a0ac1fb8..6003693c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -157,6 +157,7 @@
           hp-notebook-14-df0023 = import ./hp/notebook/14-df0023;
           intel-nuc-8i7beh = import ./intel/nuc/8i7beh;
           lenovo-ideacentre-k330 = import ./lenovo/ideacentre/k330;
+          lenovo-ideapad-14iah10 = import ./lenovo/ideapad/14iah10;
           lenovo-ideapad-14imh9 = import ./lenovo/ideapad/14imh9;
           lenovo-ideapad-15alc6 = import ./lenovo/ideapad/15alc6;
           lenovo-ideapad-15arh05 = import ./lenovo/ideapad/15arh05;
diff --git a/lenovo/ideapad/14iah10/README.md b/lenovo/ideapad/14iah10/README.md
new file mode 100644
index 00000000..f6a1ccad
--- /dev/null
+++ b/lenovo/ideapad/14iah10/README.md
@@ -0,0 +1,7 @@
+# Lenovo IdeaPad 5 Pro / XiaoXin Pro 14 GT (14IAH10)
+
+This module provides configuration common to all Arrow Lake (Core Ultra 200H
+series)-based devices and rectifies a few quirks with the system that are mostly
+all caused by firmware or BIOS bugs. While the solution isn't perfect, the
+laptop is decently usable with these tweaks, including networking and speakers
+output.
diff --git a/lenovo/ideapad/14iah10/default.nix b/lenovo/ideapad/14iah10/default.nix
new file mode 100644
index 00000000..e4b62cf0
--- /dev/null
+++ b/lenovo/ideapad/14iah10/default.nix
@@ -0,0 +1,40 @@
+{
+  lib,
+  ...
+}:
+{
+  imports = [
+    ../../../common/cpu/intel/arrow-lake
+    ../../../common/pc/laptop
+    ../../../common/pc/ssd
+  ];
+
+  boot = {
+    # DSP-based SOF drivers currently don't work due to missing topology
+    # definitions, so we fall back to old snd_hda_intel drivers
+    # See https://thesofproject.github.io/latest/getting_started/intel_debug/introduction.html#pci-devices-introduced-after-2016
+    #
+    # Last tested with sof-firmware version 2025.05; newer SOF releases
+    # may include updated topologies
+    extraModprobeConfig = ''
+      options snd-intel-dspcfg dsp_driver=1
+    '';
+
+    # HACK: Fix the infamous "Unable to change power state from D3cold to D0"
+    # error when resuming the system from a suspended state, by _completely_
+    # disabling PCIe port power management and thereby preventing the Wi-Fi
+    # adapter from turning off at all.
+    #
+    # This is theoretically bad from a battery life standpoint, but it's
+    # necessary until Intel ships a functioning firmware release that doesn't
+    # suffer from this issue. In my real-world testing this doesn't seem to
+    # have caused a noticable decrease in battery life, however.
+    #
+    # See Intel's (non-)response regarding this issue with this exact model at:
+    # https://community.intel.com/t5/Wireless/Intel-WiFi-7-BE200-loses-connection-after-suspend-resume-on/m-p/1700055
+    #
+    # Last tested to be necessary on ucode version 98 — this might no
+    # longer be necessary for newer firmware releases!
+    kernelParams = [ "pcie_port_pm=off" ];
+  };
+}