From 79974bc9ee494d5890f78ba74ecb63e6d51e228b Mon Sep 17 00:00:00 2001
From: Arnaud Ferraris <arnaud.ferraris@gmail.com>
Date: Thu, 14 Jan 2021 00:06:55 +0100
Subject: [PATCH] manager: don't manage the GNSS by default

---
 src/at.c      |  9 ++++++---
 src/manager.c | 13 +++++++++++++
 src/manager.h |  1 +
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/at.c b/src/at.c
index c417ffa..39a857a 100644
--- a/src/at.c
+++ b/src/at.c
@@ -268,7 +268,8 @@ void at_sequence_configure(struct EG25Manager *manager)
         append_at_command(manager, "QCFG", "apready", NULL, "1,0,500");
     }
     append_at_command(manager, "QURCCFG", "urcport", NULL, "\"usbat\"");
-    append_at_command(manager, "QGPS", NULL, NULL, "1");
+    if (manager->manage_gnss)
+        append_at_command(manager, "QGPS", NULL, NULL, "1");
     append_at_command(manager, "QSCLK", NULL, "1", NULL);
     // Make sure URC cache is disabled
     append_at_command(manager, "QCFG", "urc/cache", "0", NULL);
@@ -277,7 +278,8 @@ void at_sequence_configure(struct EG25Manager *manager)
 
 void at_sequence_suspend(struct EG25Manager *manager)
 {
-    append_at_command(manager, "QGPSEND", NULL, NULL, NULL);
+    if (manager->manage_gnss)
+        append_at_command(manager, "QGPSEND", NULL, NULL, NULL);
     append_at_command(manager, "QCFG", "urc/cache", "1", NULL);
     send_at_command(manager);
 }
@@ -285,7 +287,8 @@ void at_sequence_suspend(struct EG25Manager *manager)
 void at_sequence_resume(struct EG25Manager *manager)
 {
     append_at_command(manager, "QCFG", "urc/cache", "0", NULL);
-    append_at_command(manager, "QGPS", NULL, "1", NULL);
+    if (manager->manage_gnss)
+        append_at_command(manager, "QGPS", NULL, "1", NULL);
     send_at_command(manager);
 }
 
diff --git a/src/manager.c b/src/manager.c
index 423cbfa..6445e0f 100644
--- a/src/manager.c
+++ b/src/manager.c
@@ -193,14 +193,27 @@ void modem_resume_post(struct EG25Manager *manager)
 
 int main(int argc, char *argv[])
 {
+    g_autoptr(GOptionContext) opt_context = NULL;
+    g_autoptr(GError) err = NULL;
     struct EG25Manager manager;
     char compatible[32];
     int fd, ret;
+    const GOptionEntry options[] = {
+        { "gnss", 'g', 0, G_OPTION_ARG_NONE, &manager.manage_gnss, "Manage the GNSS feature.", NULL },
+        { NULL, 0, 0, G_OPTION_ARG_NONE, NULL, NULL, NULL }
+    };
 
     memset(&manager, 0, sizeof(manager));
     manager.at_fd = -1;
     manager.suspend_inhibit_fd = -1;
 
+    opt_context = g_option_context_new ("- Power management for the Quectel EG25 modem");
+    g_option_context_add_main_entries (opt_context, options, NULL);
+    if (!g_option_context_parse (opt_context, &argc, &argv, &err)) {
+        g_warning ("%s", err->message);
+        return 1;
+    }
+
     manager.loop = g_main_loop_new(NULL, FALSE);
 
     fd = open("/proc/device-tree/compatible", O_RDONLY);
diff --git a/src/manager.h b/src/manager.h
index 605d73e..f6351be 100644
--- a/src/manager.h
+++ b/src/manager.h
@@ -28,6 +28,7 @@ enum EG25State {
 struct EG25Manager {
     GMainLoop *loop;
     guint reset_timer;
+    gboolean manage_gnss;
 
     int at_fd;
     guint at_source;