2 files changed, 20 insertions, 5 deletions

diff --git a/src/modules/module-alsa-sink.c b/src/modules/module-alsa-sink.c
index 8e66f796..aad6801e 100644
--- a/src/modules/module-alsa-sink.c
+++ b/src/modules/module-alsa-sink.c
@@ -1148,7 +1148,7 @@ int pa__init(pa_module*m) {
     }
 
     if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
-        pa_log("Failed to parse timer_scheduling argument.");
+        pa_log("Failed to parse tsched argument.");
         goto fail;
     }
 
diff --git a/src/modules/module-hal-detect.c b/src/modules/module-hal-detect.c
index ab5b206f..5354717e 100644
--- a/src/modules/module-hal-detect.c
+++ b/src/modules/module-hal-detect.c
@@ -56,9 +56,11 @@ PA_MODULE_DESCRIPTION("Detect available audio hardware and load matching drivers
 PA_MODULE_VERSION(PACKAGE_VERSION);
 PA_MODULE_LOAD_ONCE(TRUE);
 #if defined(HAVE_ALSA) && defined(HAVE_OSS)
-PA_MODULE_USAGE("api=<alsa or oss>");
+PA_MODULE_USAGE("api=<alsa or oss> "
+                "tsched=<enable system timer based scheduling mode?>");
 #elif defined(HAVE_ALSA)
-PA_MODULE_USAGE("api=<alsa>");
+PA_MODULE_USAGE("api=<alsa> "
+                "tsched=<enable system timer based scheduling mode?>");
 #elif defined(HAVE_OSS)
 PA_MODULE_USAGE("api=<oss>");
 #endif
@@ -76,6 +78,9 @@ struct userdata {
     pa_dbus_connection *connection;
     pa_hashmap *devices;
     const char *capability;
+#ifdef HAVE_ALSA
+    pa_bool_t use_tsched;
+#endif
 };
 
 struct timerdata {
@@ -88,6 +93,9 @@ struct timerdata {
 
 static const char* const valid_modargs[] = {
     "api",
+#ifdef HAVE_ALSA
+    "tsched",
+#endif
     NULL
 };
 
@@ -189,12 +197,12 @@ static pa_module* hal_device_load_alsa(struct userdata *u, const char *udi, char
         *sink_name = pa_sprintf_malloc("alsa_output.%s", strip_udi(udi));
 
         module_name = "module-alsa-sink";
-        args = pa_sprintf_malloc("device_id=%u sink_name=%s", card, *sink_name);
+        args = pa_sprintf_malloc("device_id=%u sink_name=%s tsched=%i", card, *sink_name, (int) u->use_tsched);
     } else {
         *source_name = pa_sprintf_malloc("alsa_input.%s", strip_udi(udi));
 
         module_name = "module-alsa-source";
-        args = pa_sprintf_malloc("device_id=%u source_name=%s", card, *source_name);
+        args = pa_sprintf_malloc("device_id=%u source_name=%s tsched=%i", card, *source_name, (int) u->use_tsched);
     }
 
     pa_log_debug("Loading %s with arguments '%s'", module_name, args);
@@ -724,6 +732,7 @@ int pa__init(pa_module*m) {
     int n = 0;
     pa_modargs *ma;
     const char *api;
+    pa_bool_t use_tsched = TRUE;
 
     pa_assert(m);
 
@@ -734,6 +743,11 @@ int pa__init(pa_module*m) {
         goto fail;
     }
 
+    if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
+        pa_log("Failed to parse tsched argument.");
+        goto fail;
+    }
+
     if ((api = pa_modargs_get_value(ma, "api", NULL))) {
         int good = 0;
 
@@ -775,6 +789,7 @@ int pa__init(pa_module*m) {
     u->connection = conn;
     u->devices = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
     u->capability = api;
+    u->use_tsched = use_tsched;
     m->userdata = u;
 
 #ifdef HAVE_ALSA