From 5bc8b5dcb6a4e03a1ad7bceba2c22bb9f6eb81fb Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Fri, 4 Apr 2014 12:22:22 +0900
Subject: [PATCH 1/8] Add support for full-led revision of ghpad

---
 keyboard/ghpad/Makefile               |  5 +-
 keyboard/ghpad/backlight.c            | 76 ++++++++++++++++++++-------
 keyboard/ghpad/keymap_4x6_backlight.c | 54 +++++++++++++++++++
 keyboard/ghpad/led.c                  |  8 +--
 keyboard/ghpad/matrix.c               |  2 +-
 5 files changed, 118 insertions(+), 27 deletions(-)
 create mode 100644 keyboard/ghpad/keymap_4x6_backlight.c

diff --git a/keyboard/ghpad/Makefile b/keyboard/ghpad/Makefile
index 4b76788c..f1cecfb0 100644
--- a/keyboard/ghpad/Makefile
+++ b/keyboard/ghpad/Makefile
@@ -50,7 +50,8 @@ TARGET_DIR = .
 # project specific files
 SRC =	keymap_common.c \
 	matrix.c \
-	led.c
+	led.c \
+	backlight.c
 
 ifdef KEYMAP
     SRC := keymap_$(KEYMAP).c $(SRC)
@@ -123,7 +124,7 @@ COMMAND_ENABLE = yes	# Commands for debug and configuration
 #SLEEP_LED_ENABLE = yes	# Breathing sleep LED during USB suspend
 #NKRO_ENABLE = yes	# USB Nkey Rollover - not yet supported in LUFA
 #PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
-#BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
+BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_EX_ENABLE = yes	# External keymap in eeprom
 KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor
 
diff --git a/keyboard/ghpad/backlight.c b/keyboard/ghpad/backlight.c
index 61282adb..f6b00317 100644
--- a/keyboard/ghpad/backlight.c
+++ b/keyboard/ghpad/backlight.c
@@ -1,5 +1,5 @@
 /*
-Copyright 2013 Kai Ryu <kai1103@gmail.com>
+Copyright 2013,2014 Kai Ryu <kai1103@gmail.com>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -17,30 +17,66 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <avr/io.h>
 #include <avr/interrupt.h>
+#include <avr/pgmspace.h>
 #include "backlight.h"
 
+static const uint8_t backlight_table[] PROGMEM = {
+    0, 16, 128, 255
+};
+
+uint8_t softpwm_ocr = 0;
+
 /* Backlight pin configuration
- * PF7  PF6  PF5
+ * PWM:  PB5            (RevRS)
+ * GPIO: PF7  PF6  PF5
  */
 void backlight_set(uint8_t level)
 {
-    switch (level) {
-        case 0:
-            DDRF  &= ~(1<<PF7 | 1<<PF6 | 1<<PF5);
-            break;
-        case 1:
-            DDRF  &= ~(1<<PF6 | 1<<PF5);
-            DDRF  |=  (1<<PF7);
-            PORTF &= ~(1<<PF7);
-            break;
-        case 2:
-            DDRF  &= ~(1<<PF5);
-            DDRF  |=  (1<<PF7 | 1<<PF6);
-            PORTF &= ~(1<<PF7 | 1<<PF6);
-            break;
-        case 3:
-            DDRF  |=  (1<<PF7 | 1<<PF6 | 1<<PF5);
-            PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5);
-            break;
+    if (level > 0) {
+        // Turn on PWM
+        cli();
+        // Hard PWM
+        DDRB |= (1<<PB5);
+        PORTB |= (1<<PB5);
+        TCCR1A |= ((1<<WGM10) | (1<<COM1A1));
+        TCCR1B |= ((1<<CS11) | (1<<CS10));
+        // Soft PWM
+        DDRF |= ((1<<PF7) | (1<<PF6) | (1<<PF5));
+        PORTF |= ((1<<PF7) | (1<<PF6) | (1<<PF5));
+        TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
+        TIFR1 |= (1<<TOV1);
+        sei();
+        // Set PWM
+        OCR1A = pgm_read_byte(&backlight_table[level]);
+        softpwm_ocr = pgm_read_byte(&backlight_table[level]);
+    }
+    else {
+        // Turn off PWM
+        cli();
+        // Hard PWM
+        DDRB |= (1<<PB5);
+        PORTB &= ~(1<<PB5);
+        TCCR1A &= ~((1<<WGM10) | (1<<COM1A1));
+        TCCR1B &= ~((1<<CS11) | (1<<CS10));
+        // Soft PWM
+        DDRF |= ((1<<PF7) | (1<<PF6) | (1<<PF5));
+        PORTF |= ((1<<PF7) | (1<<PF6) | (1<<PF5));
+        TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
+        TIFR1 |= (1<<TOV1);
+        sei();
+        // Set PWM
+        OCR1A = 0;
+        softpwm_ocr = 0;
     }
 }
+
+ISR(TIMER1_COMPA_vect)
+{
+    // LED off
+    PORTF |= ((1<<PF7) | (1<<PF6) | (1<<PF5));
+}
+ISR(TIMER1_OVF_vect)
+{
+    // LED on
+    PORTF &= ~((1<<PF7) | (1<<PF6) | (1<<PF5));
+}
diff --git a/keyboard/ghpad/keymap_4x6_backlight.c b/keyboard/ghpad/keymap_4x6_backlight.c
new file mode 100644
index 00000000..e2359034
--- /dev/null
+++ b/keyboard/ghpad/keymap_4x6_backlight.c
@@ -0,0 +1,54 @@
+#include "keymap_common.h"
+
+// 4x6 Keypad
+#ifdef KEYMAP_SECTION_ENABLE
+const uint8_t keymaps[KEYMAPS_COUNT][MATRIX_ROWS][MATRIX_COLS] __attribute__ ((section (".keymap.keymaps"))) = {
+#else
+const uint8_t keymaps[][MATRIX_ROWS][MATRIX_COLS] PROGMEM = {
+#endif
+    /* Keymap 0: Default Layer
+     * ,---------------.
+     * |Esc|Fn0|Fn1|Fn2|
+     * |---+---+---+---|
+     * |Num|/  |*  |-  |
+     * |---+---+---+---|
+     * |7  |8  |9  |+  |
+     * |---+---+---|   |
+     * |4  |5  |6  |   |
+     * |---+---+---+---|
+     * |1  |2  |3  |Ent|
+     * |---+---+---|   |
+     * |0      |.  |   |
+     * `---------------'
+     */
+    [0] = KEYMAP(
+        ESC, FN0, FN1, FN2,  \
+        NLCK,PSLS,PAST,PMNS, \
+        P7,  P8,  P9,  PPLS, \
+        P4,  P5,  P6,  PENT, \
+        P1,  P2,  P3,  PENT, \
+        P0,  NO,  PDOT,NO)
+};
+
+/*
+ * Fn action definition
+ */
+#ifdef KEYMAP_SECTION_ENABLE
+const uint16_t fn_actions[FN_ACTIONS_COUNT] __attribute__ ((section (".keymap.fn_actions"))) = {
+#else
+const uint16_t fn_actions[] PROGMEM = {
+#endif
+    [0] = ACTION_BACKLIGHT_TOGGLE(),
+    [1] = ACTION_BACKLIGHT_DECREASE(),
+    [2] = ACTION_BACKLIGHT_INCREASE()
+};
+
+#ifdef KEYMAP_EX_ENABLE
+uint16_t keys_count(void) {
+    return sizeof(keymaps) / sizeof(keymaps[0]) * MATRIX_ROWS * MATRIX_COLS;
+}
+
+uint16_t fn_actions_count(void) {
+    return sizeof(fn_actions) / sizeof(fn_actions[0]);
+}
+#endif
diff --git a/keyboard/ghpad/led.c b/keyboard/ghpad/led.c
index eac65559..04104fb7 100644
--- a/keyboard/ghpad/led.c
+++ b/keyboard/ghpad/led.c
@@ -24,11 +24,11 @@ void led_set(uint8_t usb_led)
 {
     if (usb_led & (1<<USB_LED_NUM_LOCK)) {
         // output low
-        DDRB |= (1<<2);
-        PORTB &= ~(1<<2);
+        DDRB |= (1<<PB2);
+        PORTB &= ~(1<<PB2);
     } else {
         // Hi-Z
-        DDRB &= ~(1<<2);
-        PORTB &= ~(1<<2);
+        DDRB &= ~(1<<PB2);
+        PORTB &= ~(1<<PB2);
     }
 }
diff --git a/keyboard/ghpad/matrix.c b/keyboard/ghpad/matrix.c
index 32cf4b6a..36b78d77 100644
--- a/keyboard/ghpad/matrix.c
+++ b/keyboard/ghpad/matrix.c
@@ -1,5 +1,5 @@
 /*
-Copyright 2013 Kai Ryu <kai1103@gmail.com>
+Copyright 2013,2014 Kai Ryu <kai1103@gmail.com>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

From ef8d03202923b3277f99c196fa5d79b3320a5e4a Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Tue, 8 Apr 2014 17:56:21 +0900
Subject: [PATCH 2/8] Add bootmagic and magic command support for ghpad

---
 keyboard/ghpad/Makefile | 7 ++++++-
 keyboard/ghpad/config.h | 8 ++++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/keyboard/ghpad/Makefile b/keyboard/ghpad/Makefile
index f1cecfb0..09636010 100644
--- a/keyboard/ghpad/Makefile
+++ b/keyboard/ghpad/Makefile
@@ -112,6 +112,11 @@ OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 #   USBaspLoader     2048
 OPT_DEFS += -DBOOTLOADER_SIZE=4096
 
+# Additional definitions from command line
+ifdef DEFS
+    OPT_DEFS += $(foreach DEF,$(DEFS),-D$(DEF))
+endif
+
 
 # Build Options
 #   comment out to disable the options.
@@ -122,7 +127,7 @@ EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
 CONSOLE_ENABLE = yes	# Console for debug(+400)
 COMMAND_ENABLE = yes	# Commands for debug and configuration
 #SLEEP_LED_ENABLE = yes	# Breathing sleep LED during USB suspend
-#NKRO_ENABLE = yes	# USB Nkey Rollover - not yet supported in LUFA
+NKRO_ENABLE = yes	# USB Nkey Rollover
 #PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
 BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_EX_ENABLE = yes	# External keymap in eeprom
diff --git a/keyboard/ghpad/config.h b/keyboard/ghpad/config.h
index eed9cbc9..b710f42e 100644
--- a/keyboard/ghpad/config.h
+++ b/keyboard/ghpad/config.h
@@ -54,11 +54,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_RESYNC_ENABLE
 
 /* key combination for command */
+#ifndef __ASSEMBLER__
+#include "matrix.h"
 #define IS_COMMAND() ( \
-    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+    matrix_is_on(0, 0) && matrix_is_on(0, MATRIX_COLS - 1) \
 )
+#endif
 
-
+/* boot magic key */
+#define BOOTMAGIC_KEY_SALT KC_FN0
 
 /*
  * Feature disable options

From 8b75dd43ba1478904a75a10ce2db0f6195ceb828 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Tue, 8 Apr 2014 17:59:31 +0900
Subject: [PATCH 3/8] Extend reset eeconfig of bootmagic to reset keymap too

---
 common/bootmagic.c | 1 +
 common/eeconfig.c  | 7 +++++++
 common/keymap_ex.c | 6 +++++-
 common/keymap_ex.h | 3 ++-
 4 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/common/bootmagic.c b/common/bootmagic.c
index 036d4904..311a02f2 100644
--- a/common/bootmagic.c
+++ b/common/bootmagic.c
@@ -30,6 +30,7 @@ void bootmagic(void)
 
     /* eeconfig clear */
     if (bootmagic_scan_keycode(BOOTMAGIC_KEY_EEPROM_CLEAR)) {
+        eeconfig_disable();
         eeconfig_init();
     }
 
diff --git a/common/eeconfig.c b/common/eeconfig.c
index 5bd47dc6..5aadf1c5 100644
--- a/common/eeconfig.c
+++ b/common/eeconfig.c
@@ -2,6 +2,7 @@
 #include <stdbool.h>
 #include <avr/eeprom.h>
 #include "eeconfig.h"
+#include "keymap_ex.h"
 
 void eeconfig_init(void)
 {
@@ -13,6 +14,9 @@ void eeconfig_init(void)
 #ifdef BACKLIGHT_ENABLE
     eeprom_write_byte(EECONFIG_BACKLIGHT,      0);
 #endif
+#ifdef KEYMAP_EX_ENABLE
+    keymap_ex_init();
+#endif
 }
 
 void eeconfig_enable(void)
@@ -22,6 +26,9 @@ void eeconfig_enable(void)
 
 void eeconfig_disable(void)
 {
+#ifdef KEYMAP_EX_ENABLE
+    keymap_ex_disable();
+#endif
     eeprom_write_word(EECONFIG_MAGIC, 0xFFFF);
 }
 
diff --git a/common/keymap_ex.c b/common/keymap_ex.c
index 0c01f707..99859c06 100644
--- a/common/keymap_ex.c
+++ b/common/keymap_ex.c
@@ -23,12 +23,16 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #ifdef KEYMAP_EX_ENABLE
 
-void keymap_init(void) {
+void keymap_ex_init(void) {
     if (!check_keymap_in_eeprom()) {
         write_keymap_to_eeprom();
     }
 }
 
+void keymap_ex_disable(void) {
+    eeprom_write_word((void*)EECONFIG_KEYMAP_CHECKSUM, eeprom_read_word((void*)EECONFIG_KEYMAP_CHECKSUM) + 1);
+}
+
 bool check_keymap_in_eeprom(void) {
     uint16_t checksum_in_eeprom = eeprom_read_word(&((keymap_ex_t*)EECONFIG_KEYMAP_EX)->checksum);
     uint16_t checksum = EECONFIG_MAGIC_NUMBER;
diff --git a/common/keymap_ex.h b/common/keymap_ex.h
index e64bace6..ee6ff8c6 100644
--- a/common/keymap_ex.h
+++ b/common/keymap_ex.h
@@ -47,7 +47,8 @@ typedef struct {
 #define FN_ACTION_OFFSET(index) (sizeof(uint16_t) * index)
 #define KEY_OFFSET(layer, row, col) (sizeof(uint8_t) * (layer * MATRIX_ROWS * MATRIX_COLS + row * MATRIX_COLS + col))
 
-void keymap_init(void);
+void keymap_ex_init(void);
+void keymap_ex_disable(void);
 bool check_keymap_in_eeprom(void);
 void write_keymap_to_eeprom(void);
 uint8_t eeconfig_read_keymap_key(uint8_t layer, uint8_t row, uint8_t col);

From d004baf7271b808143c87b8b8816a9525ace2e1f Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Tue, 8 Apr 2014 18:02:20 +0900
Subject: [PATCH 4/8] Add backlight level support for gh60 revB

---
 keyboard/gh60/backlight.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/keyboard/gh60/backlight.c b/keyboard/gh60/backlight.c
index 25fbc833..ee5aad9a 100644
--- a/keyboard/gh60/backlight.c
+++ b/keyboard/gh60/backlight.c
@@ -72,14 +72,39 @@ void backlight_set(uint8_t level)
     }
 }
 #else
+static const uint8_t backlight_table[] PROGMEM = {
+    0, 16, 128, 255
+};
+
 void backlight_set(uint8_t level)
 {
     if (level > 0) {
-        DDRF  |=  (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
-        PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
+        DDRF  |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
+        PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
+        cli();
+        TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
+        TIFR1 |= (1<<TOV1);
+        sei();
+        OCR1A = pgm_read_byte(&backlight_table[level]);
     }
     else {
         DDRF  &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
+        cli();
+        TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
+        TIFR1 |= (1<<TOV1);
+        sei();
+        OCR1A = 0;
     }
 }
+
+ISR(TIMER1_COMPA_vect)
+{
+    // LED off
+    PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
+}
+ISR(TIMER1_OVF_vect)
+{
+    // LED on
+    PORTF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
+}
 #endif

From 8a3b6637621595912da4db0aa849fd9d3a861522 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Tue, 8 Apr 2014 18:05:39 +0900
Subject: [PATCH 5/8] Add PS2 mouse support for gh60

---
 common/keyboard.c      | 10 +++++++---
 keyboard/gh60/Makefile |  5 +++--
 keyboard/gh60/config.h | 11 +++++++++++
 keyboard/gh60/matrix.c | 24 ++++++++++++++++++++++++
 protocol/ps2.h         |  1 +
 5 files changed, 46 insertions(+), 5 deletions(-)

diff --git a/common/keyboard.c b/common/keyboard.c
index c5de65ef..933eb780 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -68,7 +68,9 @@ void keyboard_init(void)
 #endif
 
 #ifdef PS2_MOUSE_ENABLE
-    ps2_mouse_init();
+    if (ps2_enabled()) {
+        ps2_mouse_init();
+    }
 #endif
 
 #ifdef BOOTMAGIC_ENABLE
@@ -80,7 +82,7 @@ void keyboard_init(void)
 #endif
 
 #ifdef KEYMAP_EX_ENABLE
-    keymap_init();
+    keymap_ex_init();
 #endif
 }
 
@@ -133,7 +135,9 @@ MATRIX_LOOP_END:
 #endif
 
 #ifdef PS2_MOUSE_ENABLE
-    ps2_mouse_task();
+    if (ps2_enabled()) {
+        ps2_mouse_task();
+    }
 #endif
 
     // update LED
diff --git a/keyboard/gh60/Makefile b/keyboard/gh60/Makefile
index 8da7908d..33b6cc01 100644
--- a/keyboard/gh60/Makefile
+++ b/keyboard/gh60/Makefile
@@ -133,12 +133,12 @@ CONSOLE_ENABLE = yes	# Console for debug(+400)
 COMMAND_ENABLE = yes	# Commands for debug and configuration
 #SLEEP_LED_ENABLE = yes	# Breathing sleep LED during USB suspend
 NKRO_ENABLE = yes	# USB Nkey Rollover - not yet supported in LUFA
-#PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
+PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
+PS2_USE_BUSYWAIT = yes
 BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_EX_ENABLE = yes	# External keymap in eeprom
 KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor
 
-
 # Optimize size but this may cause error "relocation truncated to fit"
 #EXTRALDFLAGS = -Wl,--relax
 
@@ -147,5 +147,6 @@ VPATH += $(TARGET_DIR)
 VPATH += $(TOP_DIR)
 
 include $(TOP_DIR)/protocol/lufa.mk
+include $(TOP_DIR)/protocol.mk
 include $(TOP_DIR)/common.mk
 include $(TOP_DIR)/rules.mk
diff --git a/keyboard/gh60/config.h b/keyboard/gh60/config.h
index dd9d21ae..f46c7413 100644
--- a/keyboard/gh60/config.h
+++ b/keyboard/gh60/config.h
@@ -66,7 +66,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
+/* PS2 mouse support */
+#ifdef PS2_MOUSE_ENABLE
+#define PS2_CLOCK_PORT	PORTF
+#define PS2_CLOCK_PIN	PINF
+#define PS2_CLOCK_DDR	DDRF
+#define PS2_CLOCK_BIT	PF7
 
+#define PS2_DATA_PORT	PORTF
+#define PS2_DATA_PIN	PINF
+#define PS2_DATA_DDR	DDRF
+#define PS2_DATA_BIT	PF6
+#endif
 
 /*
  * Feature disable options
diff --git a/keyboard/gh60/matrix.c b/keyboard/gh60/matrix.c
index bb61f6ed..94cab02b 100644
--- a/keyboard/gh60/matrix.c
+++ b/keyboard/gh60/matrix.c
@@ -26,6 +26,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "debug.h"
 #include "util.h"
 #include "matrix.h"
+#ifdef PS2_MOUSE_ENABLE
+#include "ps2.h"
+#endif
 
 
 #ifndef DEBOUNCE
@@ -42,6 +45,14 @@ static void init_cols(void);
 static void unselect_rows(void);
 static void select_row(uint8_t row);
 
+#ifdef PS2_MOUSE_ENABLE
+static uint8_t ps2_mouse_detected;
+
+uint8_t ps2_enabled(void)
+{
+    return ps2_mouse_detected;
+}
+#endif
 
 inline
 uint8_t matrix_rows(void)
@@ -61,6 +72,19 @@ void matrix_init(void)
     MCUCR = (1<<JTD);
     MCUCR = (1<<JTD);
 
+#ifdef PS2_MOUSE_ENABLE
+    // ps2 mouse detect
+    DDRF &= ~(1<<PF5 | 1<<PF4);
+    PORTF |= (1<<PF5 | 1<<PF4);
+    if (PINF & (1<<PF5 | 1 <<PF4)) {
+        ps2_mouse_detected = 0;
+    }
+    else {
+        ps2_mouse_detected = 1;
+    }
+    DDRF |= (1<<PF5 | 1<<PF4);
+#endif
+
     // initialize row and col
     unselect_rows();
     init_cols();
diff --git a/protocol/ps2.h b/protocol/ps2.h
index 483eea72..703e0c27 100644
--- a/protocol/ps2.h
+++ b/protocol/ps2.h
@@ -90,6 +90,7 @@ uint8_t ps2_host_send(uint8_t data);
 uint8_t ps2_host_recv_response(void);
 uint8_t ps2_host_recv(void);
 void ps2_host_set_led(uint8_t usb_led);
+uint8_t ps2_enabled(void);
 
 
 /* Check port settings for clock and data line */

From ab3349724efe7f71d42e5beb4d458f77a5673389 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Wed, 9 Apr 2014 17:20:31 +0900
Subject: [PATCH 6/8] Disable PS/2 mouse feature by default

---
 keyboard/gh60/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/keyboard/gh60/Makefile b/keyboard/gh60/Makefile
index 33b6cc01..97d84fbc 100644
--- a/keyboard/gh60/Makefile
+++ b/keyboard/gh60/Makefile
@@ -133,8 +133,8 @@ CONSOLE_ENABLE = yes	# Console for debug(+400)
 COMMAND_ENABLE = yes	# Commands for debug and configuration
 #SLEEP_LED_ENABLE = yes	# Breathing sleep LED during USB suspend
 NKRO_ENABLE = yes	# USB Nkey Rollover - not yet supported in LUFA
-PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
-PS2_USE_BUSYWAIT = yes
+#PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
+#PS2_USE_BUSYWAIT = yes
 BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_EX_ENABLE = yes	# External keymap in eeprom
 KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor

From 54028c2b653d0634c1cd6d046a4831ef4936b3b4 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Wed, 9 Apr 2014 17:21:09 +0900
Subject: [PATCH 7/8] Fix backlight issue for gh60 revB

---
 keyboard/gh60/backlight.c | 4 ++++
 keyboard/gh60/config.h    | 8 +-------
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/keyboard/gh60/backlight.c b/keyboard/gh60/backlight.c
index ee5aad9a..91b38c11 100644
--- a/keyboard/gh60/backlight.c
+++ b/keyboard/gh60/backlight.c
@@ -82,6 +82,8 @@ void backlight_set(uint8_t level)
         DDRF  |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
         PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
         cli();
+        TCCR1A |= (1<<WGM10);
+        TCCR1B |= ((1<<CS11) | (1<<CS10));
         TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
         TIFR1 |= (1<<TOV1);
         sei();
@@ -90,6 +92,8 @@ void backlight_set(uint8_t level)
     else {
         DDRF  &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
         cli();
+        TCCR1A &= ~(1<<WGM10);
+        TCCR1B &= ~((1<<CS11) | (1<<CS10));
         TIMSK1 |= ((1<<OCIE1A) | (1<<TOIE1));
         TIFR1 |= (1<<TOV1);
         sei();
diff --git a/keyboard/gh60/config.h b/keyboard/gh60/config.h
index f46c7413..c083b505 100644
--- a/keyboard/gh60/config.h
+++ b/keyboard/gh60/config.h
@@ -42,13 +42,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DEBOUNCE    5
 
 /* number of backlight levels */
-#if defined(GH60_REV_CHN)
-#   define BACKLIGHT_LEVELS 3
-#elif defined(GH60_REV_CNY)
-#   define BACKLIGHT_LEVELS 3
-#else
-#   define BACKLIGHT_LEVELS 1
-#endif
+#define BACKLIGHT_LEVELS 3
 
 #ifdef GH60_REV_CNY
 #   define LED_MATRIX_ROWS 6

From 19ef3f825a181bb7e9b0220ac70b2cfa5d475621 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Fri, 11 Apr 2014 16:54:16 +0900
Subject: [PATCH 8/8] Add macro defination for led matrix

---
 keyboard/gh60/led_matrix.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/keyboard/gh60/led_matrix.c b/keyboard/gh60/led_matrix.c
index bcd94218..e67b5d7b 100644
--- a/keyboard/gh60/led_matrix.c
+++ b/keyboard/gh60/led_matrix.c
@@ -18,6 +18,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <avr/io.h>
 #include "led_matrix.h"
 
+#ifdef LED_MATRIX_ENABLE
 #if defined(GH60_REV_CNY)
 
 /* LED Column pin configuration
@@ -90,3 +91,4 @@ void led_matrix_select_row(uint8_t row)
 }
 
 #endif
+#endif