qualcomm quirks: Add sdm845-modem quirk

modules/quirks/qualcomm/default.nix

@@ -2,6 +2,7 @@
   imports = [
     ./msm-dwc3.nix
     ./msm-fb-notify.nix
+    ./sdm845-modem.nix
     ./wcnss-wlan.nix
   ];
 }

modules/quirks/qualcomm/sdm845-modem.nix

@@ -0,0 +1,76 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.mobile.quirks.qualcomm;
+  inherit (lib) mkIf mkOption types;
+in
+{
+  options.mobile = {
+    quirks.qualcomm.sdm845-modem.enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = ''
+        Enable this on a device sdm845 device for modem support
+      '';
+    };
+  };
+  config = mkIf (cfg.sdm845-modem.enable) {
+    systemd.services = {
+      rmtfs = {
+        wantedBy = [ "multi-user.target" ];
+        requires = [ "qrtr-ns.service" ];
+        after = [ "qrtr-ns.service" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.rmtfs}/bin/rmtfs -r -P -s";
+          Restart = "always";
+          RestartSec = "1";
+        };
+      };
+      qrtr-ns = {
+        serviceConfig = {
+          ExecStart = "${pkgs.qrtr}/bin/qrtr-ns -f 1";
+          Restart = "always";
+        };
+      };
+      tqftpserv = {
+        wantedBy = [ "multi-user.target" ];
+        requires = [ "qrtr-ns.service" ];
+        after = [ "qrtr-ns.service" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.tqftpserv}/bin/tqftpserv";
+          Restart = "always";
+        };
+      };
+      pd-mapper = {
+        wantedBy = [ "multi-user.target" ];
+        requires = [ "qrtr-ns.service" ];
+        after = [ "qrtr-ns.service" ];
+        serviceConfig = {
+          ExecStart = "${pkgs.pd-mapper}/bin/pd-mapper";
+          Restart = "always";
+        };
+      };
+      msm-modem-uim-selection = {
+        enable = true;
+        before = [ "ModemManager.service" ];
+        wantedBy = [ "ModemManager.service" ];
+        path = with pkgs; [ libqmi gawk gnugrep ];
+        script = ''
+          QMICLI_MODEM="qmicli --silent -pd qrtr://0"
+          QMI_CARDS=$($QMICLI_MODEM --uim-get-card-status)
+          if ! printf "%s" "$QMI_CARDS" | grep -Fq "Primary GW:   session doesn't exist"
+          then
+              $QMICLI_MODEM --uim-change-provisioning-session='activate=no,session-type=primary-gw-provisioning' > /dev/null
+          fi
+          FIRST_PRESENT_SLOT=$(printf "%s" "$QMI_CARDS" | grep "Card state: 'present'" -m1 -B1 | head -n1 | cut -c7-7)
+          FIRST_PRESENT_AID=$(printf "%s" "$QMI_CARDS" | grep "usim (2)" -m1 -A3 | tail -n1 | awk '{print $1}')
+          $QMICLI_MODEM --uim-change-provisioning-session="slot=$FIRST_PRESENT_SLOT,activate=yes,session-type=primary-gw-provisioning,aid=$FIRST_PRESENT_AID" > /dev/null
+        '';
+        serviceConfig = {
+          Type = "oneshot";
+          RemainAfterExit = true;
+        };
+      };
+    };
+  };
+}