add tc (#378)

nx/include/switch.h

@@ -84,6 +84,7 @@ extern "C" {
 #include "switch/services/ns.h"
 #include "switch/services/ldr.h"
 #include "switch/services/ro.h"
+#include "switch/services/tc.h"
 #include "switch/services/ts.h"
 #include "switch/services/pm.h"
 #include "switch/services/set.h"

nx/include/switch/services/tc.h

@@ -0,0 +1,26 @@
+/**
+ * @file tc.h
+ * @brief Temperature control (tc) service IPC wrapper.
+ * @author Behemoth
+ * @copyright libnx Authors
+ */
+#pragma once
+#include "../types.h"
+#include "../sf/service.h"
+
+/// Initialize tc.
+Result tcInitialize(void);
+
+/// Exit tc.
+void tcExit(void);
+
+/// Gets the Service for tc.
+Service* tcGetServiceSession(void);
+
+Result tcEnableFanControl(void);
+/// @warning Disabling your fan can damage your system.
+Result tcDisableFanControl(void);
+Result tcIsFanControlEnabled(bool *status);
+/// Only available on [5.0.0+].
+Result tcGetSkinTemperatureMilliC(s32 *skinTemp);
+

nx/source/services/tc.c

@@ -0,0 +1,47 @@
+#define NX_SERVICE_ASSUME_NON_DOMAIN
+#include <string.h>
+#include "service_guard.h"
+#include "runtime/hosversion.h"
+#include "services/tc.h"
+
+static Service g_tcSrv;
+
+NX_GENERATE_SERVICE_GUARD(tc);
+
+Result _tcInitialize(void) {
+    return smGetService(&g_tcSrv, "tc");
+}
+
+void _tcCleanup(void) {
+    serviceClose(&g_tcSrv);
+}
+
+Service* tcGetServiceSession(void) {
+    return &g_tcSrv;
+}
+
+static Result _tcNoInNoOut(u32 cmd_id) {
+    return serviceDispatch(&g_tcSrv, cmd_id);
+}
+
+Result tcEnableFanControl(void) {
+    return _tcNoInNoOut(6);
+}
+
+Result tcDisableFanControl(void) {
+    return _tcNoInNoOut(7);
+}
+
+Result tcIsFanControlEnabled(bool *status) {
+    u8 tmp=0;
+    Result rc = serviceDispatchOut(&g_tcSrv, 8, tmp);
+    if (R_SUCCEEDED(rc) && status) *status = tmp & 1;
+    return rc;
+}
+
+Result tcGetSkinTemperatureMilliC(s32 *skinTemp) {
+    if (hosversionBefore(5,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    return serviceDispatchOut(&g_tcSrv, 9, *skinTemp);
+}