feat: add legion 16ahp9

flake.nix

@@ -163,6 +163,7 @@
         lenovo-legion-16ach6h-nvidia = import ./lenovo/legion/16ach6h/nvidia;
         lenovo-legion-16achg6-hybrid = import ./lenovo/legion/16achg6/hybrid;
         lenovo-legion-16achg6-nvidia = import ./lenovo/legion/16achg6/nvidia;
+        lenovo-legion-16ahp9 = import ./lenovo/legion/16ahp9;
         lenovo-legion-16aph8 = import ./lenovo/legion/16aph8;
         lenovo-legion-16arha7 = import ./lenovo/legion/16arha7;
         lenovo-legion-16ithg6 = import ./lenovo/legion/16ithg6;

lenovo/legion/16ahp9/README.md

@@ -0,0 +1,15 @@
+I am running the Linux 6.12.17 kernel with Gnome, and it seems to be working well.
+
+## Setup at the time of testing
+
+### nix-info
+
+```
+$ nix-info -m
+  - system: `"x86_64-linux"`
+ - host os: `Linux 6.12.17, NixOS, 25.05 (Warbler), 25.05.20250309.e3e32b6`
+ - multi-user?: `yes`
+ - sandbox: `yes`
+ - version: `nix-env (Nix) 2.24.12`
+ - nixpkgs: `/nix/store/g4ppspdl4fy7hnp4jgjl4ll03v7i08w3-source`
+```

lenovo/legion/16ahp9/default.nix

@@ -0,0 +1,39 @@
+{ lib, pkgs, ... }:
+
+{
+  imports = [
+    ../../../common/cpu/amd
+    ../../../common/cpu/amd/pstate.nix
+    ../../../common/gpu/amd
+    ../../../common/gpu/nvidia
+    ../../../common/pc/laptop
+    ../../../common/pc/laptop/ssd
+  ];
+
+  # Use latest LTS kernel for more Raphael fixes
+  boot = lib.mkMerge [
+    (lib.mkIf (lib.versionOlder pkgs.linux.version "6.6") {
+      kernelPackages = pkgs.linuxPackages_latest;
+      kernelParams = [ "amdgpu.sg_display=0" ];
+    })
+  ];
+
+  hardware.nvidia = {
+    modesetting.enable = lib.mkDefault true;
+    powerManagement.enable = lib.mkDefault false;
+    powerManagement.finegrained = lib.mkDefault false;
+    open = lib.mkDefault false;
+    prime = {
+      sync.enable = lib.mkDefault true;
+      amdgpuBusId = "PCI:6:0:0";
+      nvidiaBusId = "PCI:1:0:0";
+    };
+  };
+
+  # Avoid issues with modesetting causing blank screen
+  services.xserver.videoDrivers = [ "nvidia" ];
+
+  # AMD has better battery life with PPD over TLP:
+  # https://community.frame.work/t/responded-amd-7040-sleep-states/38101/13
+  services.power-profiles-daemon.enable = lib.mkDefault true;
+}