add asus-zenbook-ux481

asus/zenbook/ux481/README.md

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+# Asus Zenbook Duo 14 UX481
+
+These profiles has been tested on a slightly modified device as I have swapped the Intel Optane NVME for a Kingston NVME with a higher capacity.
+
+# GPU
+
+You need to pick between running only Intel iGPU or running both Intel iGPU and NVIDIA dGPU. By only running iGPU the battery life is a bit better as the dGPU is turned off. You can offload applications if running on NVIDIA dGPU using
+
+```bash
+nvidia-offload
+```
+
+## Battery charging limit:
+
+Using the ASUS module you can limit the charging percentage. This can be done as follows:
+
+```nix
+hardware.asus.battery =
+{
+  chargeUpto = 90;   # Maximum level of charge for your battery, as a percentage.
+  enableChargeUptoScript = true; # Whether to add charge-upto to environment.systemPackages. `charge-upto 100` temporarily sets the charge limit to 100%, useful if you're going to need the extra battery on a longer journey.
+};
+```
+
+## Hardware:
+
+```bash
+$ lspci -nn
+00:00.0 Host bridge [0600]: Intel Corporation Comet Lake-U v1 4c Host Bridge/DRAM Controller [8086:9b61] (rev 0c)
+00:02.0 VGA compatible controller [0300]: Intel Corporation CometLake-U GT2 [UHD Graphics] [8086:9b41] (rev 02)
+00:04.0 Signal processing controller [1180]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem [8086:1903] (rev 0c)
+00:08.0 System peripheral [0880]: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model [8086:1911]
+00:12.0 Signal processing controller [1180]: Intel Corporation Comet Lake Thermal Subsytem [8086:02f9]
+00:14.0 USB controller [0c03]: Intel Corporation Comet Lake PCH-LP USB 3.1 xHCI Host Controller [8086:02ed]
+00:14.2 RAM memory [0500]: Intel Corporation Comet Lake PCH-LP Shared SRAM [8086:02ef]
+00:14.3 Network controller [0280]: Intel Corporation Comet Lake PCH-LP CNVi WiFi [8086:02f0]
+00:15.0 Serial bus controller [0c80]: Intel Corporation Serial IO I2C Host Controller [8086:02e8]
+00:15.1 Serial bus controller [0c80]: Intel Corporation Comet Lake Serial IO I2C Host Controller [8086:02e9]
+00:15.2 Serial bus controller [0c80]: Intel Corporation Comet Lake PCH-LP LPSS: I2C Controller #2 [8086:02ea]
+00:15.3 Serial bus controller [0c80]: Intel Corporation Device [8086:02eb]
+00:16.0 Communication controller [0780]: Intel Corporation Comet Lake Management Engine Interface [8086:02e0]
+00:1c.0 PCI bridge [0604]: Intel Corporation Comet Lake PCI Express Root Port #1 [8086:02b8] (rev f0)
+00:1c.4 PCI bridge [0604]: Intel Corporation Comet Lake PCI Express Root Port #5 [8086:02bc] (rev f0)
+00:1d.0 PCI bridge [0604]: Intel Corporation Comet Lake PCI Express Root Port #9 [8086:02b0] (rev f0)
+00:1d.4 PCI bridge [0604]: Intel Corporation Comet Lake PCI Express Root Port #13 [8086:02b4] (rev f0)
+00:1f.0 ISA bridge [0601]: Intel Corporation Comet Lake PCH-LP LPC Premium Controller/eSPI Controller [8086:0284]
+00:1f.3 Audio device [0403]: Intel Corporation Comet Lake PCH-LP cAVS [8086:02c8]
+00:1f.4 SMBus [0c05]: Intel Corporation Comet Lake PCH-LP SMBus Host Controller [8086:02a3]
+00:1f.5 Serial bus controller [0c80]: Intel Corporation Comet Lake SPI (flash) Controller [8086:02a4]
+02:00.0 3D controller [0302]: NVIDIA Corporation GP108BM [GeForce MX250] [10de:1d52] (rev a1)
+03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader [10ec:522a] (rev 01)
+04:00.0 Non-Volatile memory controller [0108]: Kingston Technology Company, Inc. NV2 NVMe SSD [TC2200] (DRAM-less) [2646:501d]
+```

asus/zenbook/ux481/intelgpu/default.nix

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+{ lib, ... }:
+{
+  imports = [
+    ../shared.nix
+    ../../../../common/gpu/intel/comet-lake
+    ../../../../common/gpu/nvidia/disable.nix # Disabling nvidia
+  ];
+}

asus/zenbook/ux481/nvidia/default.nix

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+{lib, ...}:
+{
+  imports = [
+    ../shared.nix
+    ../../../../common/gpu/nvidia/pascal
+    ../../../../common/gpu/nvidia/prime.nix
+  ];
+
+  hardware.nvidia = {
+      prime = {
+        intelBusId = "PCI:0:2:0";
+        nvidiaBusId = "PCI:2:0:0";
+      };
+
+      dynamicBoost.enable = lib.mkForce false; # Dynamic boost is not supported on Pascal architeture
+  };
+}

asus/zenbook/ux481/shared.nix

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+{
+  config,
+  lib,
+  ...
+}:
+{
+  imports = [
+    ../../../common/cpu/intel/comet-lake/cpu-only.nix
+    ../../../common/pc/laptop
+    ../../../common/pc/laptop/ssd
+    ../../battery.nix
+  ];
+
+  boot.kernelParams = [ 
+    # These options are needed for suspend to work, 
+    # otherwise the nvme will be mounted read-only on resume
+    "pcie_aspm=off"
+    "pcie_port_pm=off"
+    "nvme_core.default_ps_max_latency_us=0"
+    "mem_sleep_default=deep"
+  ];
+
+  services.thermald.enable = lib.mkDefault true;
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+}