From a5c7dc87bb9f2872483f40482060a645e00e7557 Mon Sep 17 00:00:00 2001
From: Alon Swartz <alon@turnkeylinux.org>
Date: Wed, 19 Apr 2017 14:28:29 +0300
Subject: [PATCH] added trackpoint polling delay to fix dropped keystrokes

---
 tmk_core/common/keyboard.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c
index eb7b096bed..518b42481e 100644
--- a/tmk_core/common/keyboard.c
+++ b/tmk_core/common/keyboard.c
@@ -43,6 +43,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "adb.h"
 #endif
 
+#ifdef PS2_MOUSE_ENABLE
+static uint32_t ps2_mouse_poll_time = 0;
+static int ps2_mouse_poll_interval = 10; // milliseconds
+#endif
 
 #ifdef MATRIX_HAS_GHOST
 static bool has_ghost_in_row(uint8_t row)
@@ -74,6 +78,7 @@ void keyboard_init(void)
     matrix_init();
 #ifdef PS2_MOUSE_ENABLE
     ps2_mouse_init();
+    ps2_mouse_poll_time = timer_read32();
 #endif
 #ifdef SERIAL_MOUSE_ENABLE
     serial_mouse_init();
@@ -152,7 +157,10 @@ void keyboard_task(void)
 #endif
 
 #ifdef PS2_MOUSE_ENABLE
-    ps2_mouse_task();
+    if ( timer_elapsed32( ps2_mouse_poll_time ) >= ps2_mouse_poll_interval ) {
+        ps2_mouse_task();
+        ps2_mouse_poll_time = timer_read32();
+    }
 #endif
 
 #ifdef SERIAL_MOUSE_ENABLE