From cf85efce22f8a45ca3eb97902c9b2a3ca47f67d1 Mon Sep 17 00:00:00 2001
From: tmk <hasu@tmk-kbd.com>
Date: Sun, 29 Sep 2024 00:38:48 +0900
Subject: [PATCH] sun_usb: Add build option for sun mouse support

---
 converter/sun_usb/Makefile            |  8 ++++++++
 converter/sun_usb/Makefile.atmega32u4 |  2 ++
 converter/sun_usb/sun_usb.c           | 10 ++++++++++
 3 files changed, 20 insertions(+)

diff --git a/converter/sun_usb/Makefile b/converter/sun_usb/Makefile
index f2b20eaa7a..a761dc6b7d 100644
--- a/converter/sun_usb/Makefile
+++ b/converter/sun_usb/Makefile
@@ -62,6 +62,8 @@ COMMAND_ENABLE ?= yes    # Commands for debug and configuration
 UNIMAP_ENABLE = yes
 KEYMAP_SECTION_ENABLE = yes
 
+SUN_MOUSE_ENABLE ?= yes # Sun mouse support
+
 
 # Boot Section Size in bytes
 #   Teensy halfKay   512
@@ -89,6 +91,12 @@ else
     SRC := $(KEYMAP_FILE).c $(SRC)
 endif
 
+ifeq (yes,$(strip $(SUN_MOUSE_ENABLE)))
+    OPT_DEFS += -DSUN_MOUSE_ENABLE=1
+else
+    OPT_DEFS += -DSUN_MOUSE_ENABLE=0
+endif
+
 
 # Search Path
 VPATH += $(TARGET_DIR)
diff --git a/converter/sun_usb/Makefile.atmega32u4 b/converter/sun_usb/Makefile.atmega32u4
index 3f721fe340..e234d15629 100644
--- a/converter/sun_usb/Makefile.atmega32u4
+++ b/converter/sun_usb/Makefile.atmega32u4
@@ -1,5 +1,7 @@
 TARGET = sun_usb_atmega32u4
 MCU = atmega32u4
 
+SUN_MOUSE_ENABLE = no	# Sun mouse support
+
 include Makefile
 
diff --git a/converter/sun_usb/sun_usb.c b/converter/sun_usb/sun_usb.c
index c9112ac2bc..72af076a32 100644
--- a/converter/sun_usb/sun_usb.c
+++ b/converter/sun_usb/sun_usb.c
@@ -29,6 +29,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "host.h"
 
 
+#if !defined(SUN_MOUSE_ENABLE)
+#   define SUN_MOUSE_ENABLE 1
+#endif
+
 // Timer count
 #define BAUD                1200
 #define PRESCALE            8
@@ -156,6 +160,7 @@ ISR(TIMER1_COMPA_vect)
 }
 
 
+#if SUN_MOUSE_ENABLE
 //
 // mouse uart
 //
@@ -224,6 +229,7 @@ ISR(TIMER1_COMPC_vect)
         break;
     }
 }
+#endif
 
 
 void hook_early_init(void)
@@ -265,11 +271,13 @@ void hook_early_init(void)
     EICRA  |=  (1 << ISC21) | (1 << ISC20);
     EIMSK  |=  (1 << INT2);
 
+#if SUN_MOUSE_ENABLE
     // mouse init
     suart_init(&ms_suart);
     // enable interrupt on rising edge for mouse
     EICRB  |=  (1 << ISC51) |(1 << ISC50);
     EIMSK  |=  (1 << INT5);
+#endif
 
     sei();
 }
@@ -296,6 +304,7 @@ void hook_late_init(void)
  *  the device seems to fail to follow movement and send wrong value when dragging it rapidly.
  *  it causes opposite direction movement in the result. encoder speed limit? if not a bug in my code.
  */
+#if SUN_MOUSE_ENABLE
 void hook_main_loop(void)
 {
     static uint8_t n = 0;
@@ -338,6 +347,7 @@ void hook_main_loop(void)
     }
     n = (n + 1) % 5;
 }
+#endif
 
 
 /*