From bed9213f41758da3b107faf94e86c1011a79e16e Mon Sep 17 00:00:00 2001
From: yellows8 <yellows8@users.noreply.github.com>
Date: Thu, 25 Apr 2019 19:27:45 -0400
Subject: [PATCH] Added hidsysSetNotificationLedPattern and the struct for it.

---
 nx/include/switch/services/hidsys.h | 12 +++++++++
 nx/source/services/hidsys.c         | 40 +++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/nx/include/switch/services/hidsys.h b/nx/include/switch/services/hidsys.h
index ea92d997..2bfb6536 100644
--- a/nx/include/switch/services/hidsys.h
+++ b/nx/include/switch/services/hidsys.h
@@ -9,6 +9,11 @@
 #include "../services/hid.h"
 #include "../services/sm.h"
 
+/// Structure for \ref hidsysSetNotificationLedPattern.
+typedef struct {
+    u8 unk_x0[0x48]; ///< TODO
+} HidsysNotificationLedPattern;
+
 Result hidsysInitialize(void);
 void hidsysExit(void);
 
@@ -41,3 +46,10 @@ Result hidsysGetUniquePadsFromNpad(HidControllerID id, u64 *UniquePadIds, size_t
  */
 Result hidsysGetUniquePadIds(u64 *UniquePadIds, size_t count, size_t *total_entries);
 
+/**
+ * @brief Sets the HOME-button notification LED pattern, for the specified controller.
+ * @param pattern \ref HidsysNotificationLedPattern
+ * @param UniquePadId UniquePadId for the controller.
+ */
+Result hidsysSetNotificationLedPattern(HidsysNotificationLedPattern *pattern, u64 UniquePadId);
+
diff --git a/nx/source/services/hidsys.c b/nx/source/services/hidsys.c
index 7ff208a5..5e2dd0ec 100644
--- a/nx/source/services/hidsys.c
+++ b/nx/source/services/hidsys.c
@@ -261,3 +261,43 @@ Result hidsysGetUniquePadIds(u64 *UniquePadIds, size_t count, size_t *total_entr
     return rc;
 }
 
+Result hidsysSetNotificationLedPattern(HidsysNotificationLedPattern *pattern, u64 UniquePadId) {
+    if (hosversionBefore(7,0,0))
+        return MAKERESULT(Module_Libnx, LibnxError_IncompatSysVer);
+
+    Result rc;
+
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        HidsysNotificationLedPattern pattern;
+        u64 UniquePadId;
+    } *raw;
+
+    raw = serviceIpcPrepareHeader(&g_hidsysSrv, &c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 830;
+    memcpy(&raw->pattern, pattern, sizeof(*pattern));
+    raw->UniquePadId = UniquePadId;
+
+    rc = serviceIpcDispatch(&g_hidsysSrv);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        struct {
+            u64 magic;
+            u64 result;
+            u64 total_entries;
+        } *resp;
+
+        serviceIpcParse(&g_hidsysSrv, &r, sizeof(*resp));
+        resp = r.Raw;
+    }
+
+    return rc;
+}
+