Exploration around using the properties.

Author: iwanders

drivers/platform/surface/surface_aggregator_registry.c

@@ -74,6 +74,16 @@ static const struct software_node ssam_node_tmp_pprof = {
 	.parent = &ssam_node_root,
 };
 
+static const struct property_entry ssam_node_tmp_pprof_fan_control[] = {
+	PROPERTY_ENTRY_BOOL("control_fan"),
+	{ }
+};
+static const struct software_node ssam_node_tmp_pprof_with_fan = {
+	.name = "ssam:01:03:01:00:01",
+	.parent = &ssam_node_root,
+	.properties = ssam_node_tmp_pprof_fan_control,
+};
+
 /* Fan subsystem. */
 static const struct software_node ssam_node_fan = {
 	.name = "ssam:01:05:01:01:00",
@@ -324,7 +334,7 @@ static const struct software_node *ssam_node_group_sp9[] = {
 	&ssam_node_hub_kip,
 	&ssam_node_bat_ac,
 	&ssam_node_bat_main,
-	&ssam_node_tmp_pprof,
+	&ssam_node_tmp_pprof_with_fan,
 	&ssam_node_fan,
 	&ssam_node_pos_tablet_switch,
 	&ssam_node_hid_kip_keyboard,

drivers/platform/surface/surface_platform_profile.c

@@ -144,6 +144,7 @@ static int ssam_platform_profile_set(struct platform_profile_handler *pprof,
 static int surface_platform_profile_probe(struct ssam_device *sdev)
 {
 	struct ssam_tmp_profile_device *tpd;
+        bool fan_profile;
 
 	tpd = devm_kzalloc(&sdev->dev, sizeof(*tpd), GFP_KERNEL);
 	if (!tpd)
@@ -154,6 +155,9 @@ static int surface_platform_profile_probe(struct ssam_device *sdev)
 	tpd->handler.profile_get = ssam_platform_profile_get;
 	tpd->handler.profile_set = ssam_platform_profile_set;
 
+        fan_profile = fwnode_property_read_bool(sdev->dev.fwnode, "control_fan");
+        printk(KERN_INFO "Message: %d\n", fan_profile);
+
 	set_bit(PLATFORM_PROFILE_LOW_POWER, tpd->handler.choices);
 	set_bit(PLATFORM_PROFILE_BALANCED, tpd->handler.choices);
 	set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, tpd->handler.choices);