From 24a55f58a15ce9a0c5f6f2b740c04c038c438bcc Mon Sep 17 00:00:00 2001
From: MasaGratoR <masagrator@gmail.com>
Date: Sun, 15 Feb 2026 18:14:19 +0100
Subject: [PATCH 1/3] Add files via upload

---
 nx/source/services/pwm.c | 46 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 nx/source/services/pwm.c

diff --git a/nx/source/services/pwm.c b/nx/source/services/pwm.c
new file mode 100644
index 0000000000..b3e1385416
--- /dev/null
+++ b/nx/source/services/pwm.c
@@ -0,0 +1,46 @@
+#define NX_SERVICE_ASSUME_NON_DOMAIN
+#include "service_guard.h"
+#include "services/pwm.h"
+#include "runtime/hosversion.h"
+
+static Service g_pwmSrv;
+
+NX_GENERATE_SERVICE_GUARD(pwm);
+
+Result _pwmInitialize(void) {
+    return smGetService(&g_pwmSrv, "pwm");
+}
+
+void _pwmCleanup(void) {
+    serviceClose(&g_pwmSrv);
+}
+
+Service* pwmGetServiceSession(void) {
+    return &g_pwmSrv;
+}
+
+Result pwmOpenSession2(PwmChannelSession *out, PwmChannelDeviceCode device_code) {
+    if (hosversionBefore(6,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    u32 tmp = device_code;
+
+    return serviceDispatchIn(&g_pwmSrv, 2, tmp,
+        .out_num_objects = 1,
+        .out_objects = &out->s,
+    );
+}
+
+void pwmChannelSessionClose(PwmChannelSession *c) {
+    serviceClose(&c->s);
+}
+
+Result pwmChannelSessionGetDutyCycle(PwmChannelSession *c, double* out) {
+    if (hosversionBefore(6,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    if (!serviceIsActive(&c->s))
+        return MAKERESULT(Module_Libnx, LibnxError_NotInitialized);
+
+    return serviceDispatchOut(&c->s, 7, *out);
+}

From e3f2dac3722eae028143d7e0a034623303a1f69b Mon Sep 17 00:00:00 2001
From: MasaGratoR <masagrator@gmail.com>
Date: Sun, 15 Feb 2026 18:14:36 +0100
Subject: [PATCH 2/3] Add files via upload

---
 nx/include/switch/services/pwm.h | 38 ++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 nx/include/switch/services/pwm.h

diff --git a/nx/include/switch/services/pwm.h b/nx/include/switch/services/pwm.h
new file mode 100644
index 0000000000..f0e78b9575
--- /dev/null
+++ b/nx/include/switch/services/pwm.h
@@ -0,0 +1,38 @@
+/**
+ * @file pwm.h
+ * @author MasaGratoR
+ * @copyright libnx Authors
+ */
+
+#pragma once
+
+#include "../types.h"
+#include "../sf/service.h"
+
+typedef struct {
+    Service s;
+} PwmChannelSession;
+
+typedef enum {
+    PwmChannelDeviceCode_CpuFan       = 0x3D000001,
+    PwmChannelDeviceCode_LcdBacklight = 0x3400003D,
+    PwmChannelDeviceCode_Led          = 0x35000065
+} PwmChannelDeviceCode;
+
+/// Initialize pwm.
+Result pwmInitialize(void);
+
+/// Exit pwm.
+void pwmExit(void);
+
+/// Gets the Service for pwm.
+Service* pwmGetServiceSession(void);
+
+/// Takes a PwmChannelDeviceCode and returns a PwmChannelSession. Only available on [6.0.0+].
+Result pwmOpenSession2(PwmChannelSession *out, PwmChannelDeviceCode device_code);
+
+/// Closes a PwmChannelSession.
+void pwmChannelSessionClose(PwmChannelSession *c);
+
+/// Takes a PwmChannelSession, returns an output double. Only available on [6.0.0+].
+Result pwmChannelSessionGetDutyCycle(PwmChannelSession *c, double* out);

From 5c2d3e6ae46764022d00085e7b8313d590e4abf9 Mon Sep 17 00:00:00 2001
From: MasaGratoR <masagrator@gmail.com>
Date: Sun, 15 Feb 2026 19:23:09 +0100
Subject: [PATCH 3/3] Update switch.h

---
 nx/include/switch.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/nx/include/switch.h b/nx/include/switch.h
index 6ba918e697..cbd92feab8 100644
--- a/nx/include/switch.h
+++ b/nx/include/switch.h
@@ -132,6 +132,7 @@ extern "C" {
 #include "switch/services/ectx.h"
 #include "switch/services/avm.h"
 #include "switch/services/mm.h"
+#include "switch/services/pwm.h"
 
 #include "switch/display/binder.h"
 #include "switch/display/parcel.h"