From e82f32d367444be1cf0292b47eb9bd6d3f647e92 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Thu, 28 Aug 2014 11:33:46 +0900
Subject: [PATCH] Enable PS/2 mouse for TentaPad

---
 common/keyboard.c                    |  5 ++--
 keyboard/tentapad/Makefile           |  4 ++-
 keyboard/tentapad/Makefile.pjrc      |  1 +
 keyboard/tentapad/Makefile_gh60      |  1 +
 keyboard/tentapad/Makefile_gh60.pjrc |  1 +
 keyboard/tentapad/config.h           | 43 +++++++++++++++++++++++-----
 keyboard/tentapad/matrix.c           | 20 ++++++-------
 protocol/ps2.h                       |  1 -
 8 files changed, 53 insertions(+), 23 deletions(-)

diff --git a/common/keyboard.c b/common/keyboard.c
index f989dc1f..312f6e53 100644
--- a/common/keyboard.c
+++ b/common/keyboard.c
@@ -66,6 +66,7 @@ static bool has_ghost_in_row(uint8_t row)
 }
 #endif
 
+extern uint8_t ps2_mouse_enabled;
 
 void keyboard_init(void)
 {
@@ -77,7 +78,7 @@ void keyboard_init(void)
 #endif
 
 #ifdef PS2_MOUSE_ENABLE
-    if (ps2_enabled()) {
+    if (ps2_mouse_enabled) {
         ps2_mouse_init();
     }
 #endif
@@ -163,7 +164,7 @@ MATRIX_LOOP_END:
 #endif
 
 #ifdef PS2_MOUSE_ENABLE
-    if (ps2_enabled()) {
+    if (ps2_mouse_enabled) {
         ps2_mouse_task();
     }
 #endif
diff --git a/keyboard/tentapad/Makefile b/keyboard/tentapad/Makefile
index 610e78c2..c6aad9a5 100644
--- a/keyboard/tentapad/Makefile
+++ b/keyboard/tentapad/Makefile
@@ -130,11 +130,13 @@ COMMAND_ENABLE = yes	# Commands for debug and configuration
 #NKRO_ENABLE = yes	# USB Nkey Rollover
 #USB_6KRO_ENABLE = yes	# USB 6key Rollover
 PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
-PS2_USE_BUSYWAIT = yes
+PS2_USE_USART= yes
+#PS2_USE_BUSYWAIT = yes
 BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_IN_EEPROM_ENABLE = yes # Read keymap from eeprom
 #KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor
 SOFTPWM_LED_ENABLE = yes # Enable SoftPWM to drive backlight
+FADING_LED_ENABLE = yes # Enable fading backlight
 BREATHING_LED_ENABLE = yes # Enable breathing backlight
 #LEDMAP_ENABLE = yes		# Enable LED mapping
 #LEDMAP_IN_EEPROM_ENABLE = yes # Read LED mapping from eeprom
diff --git a/keyboard/tentapad/Makefile.pjrc b/keyboard/tentapad/Makefile.pjrc
index 9cbdce7b..9975a614 100644
--- a/keyboard/tentapad/Makefile.pjrc
+++ b/keyboard/tentapad/Makefile.pjrc
@@ -105,6 +105,7 @@ BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_IN_EEPROM_ENABLE = yes # Read keymap from eeprom
 #KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor
 SOFTPWM_LED_ENABLE = yes # Enable SoftPWM to drive backlight
+FADING_LED_ENABLE = yes # Enable fading backlight
 BREATHING_LED_ENABLE = yes # Enable breathing backlight
 #LEDMAP_ENABLE = yes		# Enable LED mapping
 #LEDMAP_IN_EEPROM_ENABLE = yes # Read LED mapping from eeprom
diff --git a/keyboard/tentapad/Makefile_gh60 b/keyboard/tentapad/Makefile_gh60
index 33f87de8..717dc33d 100644
--- a/keyboard/tentapad/Makefile_gh60
+++ b/keyboard/tentapad/Makefile_gh60
@@ -135,6 +135,7 @@ BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_IN_EEPROM_ENABLE = yes # Read keymap from eeprom
 #KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor
 SOFTPWM_LED_ENABLE = yes # Enable SoftPWM to drive backlight
+FADING_LED_ENABLE = yes # Enable fading backlight
 BREATHING_LED_ENABLE = yes # Enable breathing backlight
 #LEDMAP_ENABLE = yes		# Enable LED mapping
 #LEDMAP_IN_EEPROM_ENABLE = yes # Read LED mapping from eeprom
diff --git a/keyboard/tentapad/Makefile_gh60.pjrc b/keyboard/tentapad/Makefile_gh60.pjrc
index 3dd80178..dae1da9e 100644
--- a/keyboard/tentapad/Makefile_gh60.pjrc
+++ b/keyboard/tentapad/Makefile_gh60.pjrc
@@ -105,6 +105,7 @@ BACKLIGHT_ENABLE = yes	# Enable keyboard backlight functionality
 KEYMAP_IN_EEPROM_ENABLE = yes # Read keymap from eeprom
 #KEYMAP_SECTION_ENABLE = yes	# Fixed address keymap for keymap editor
 SOFTPWM_LED_ENABLE = yes # Enable SoftPWM to drive backlight
+FADING_LED_ENABLE = yes # Enable fading backlight
 BREATHING_LED_ENABLE = yes # Enable breathing backlight
 #LEDMAP_ENABLE = yes		# Enable LED mapping
 #LEDMAP_IN_EEPROM_ENABLE = yes # Read LED mapping from eeprom
diff --git a/keyboard/tentapad/config.h b/keyboard/tentapad/config.h
index ce986978..847097b5 100644
--- a/keyboard/tentapad/config.h
+++ b/keyboard/tentapad/config.h
@@ -42,11 +42,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DEBOUNCE    5
 
 /* number of backlight levels */
-#ifdef BREATHING_LED_ENABLE
-#define BACKLIGHT_LEVELS 6
-#else
-#define BACKLIGHT_LEVELS 3
-#endif
+#define BACKLIGHT_LEVELS 8
 
 /* number of LEDs */
 #define LED_COUNT 4
@@ -64,15 +60,48 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* PS2 mouse support */
 #ifdef PS2_MOUSE_ENABLE
+
 #define PS2_CLOCK_PORT	PORTD
 #define PS2_CLOCK_PIN	PIND
 #define PS2_CLOCK_DDR	DDRD
-#define PS2_CLOCK_BIT	PD3
+#define PS2_CLOCK_BIT	PD5
 
 #define PS2_DATA_PORT	PORTD
 #define PS2_DATA_PIN	PIND
 #define PS2_DATA_DDR	DDRD
-#define PS2_DATA_BIT	PD4
+#define PS2_DATA_BIT	PD2
+
+#ifdef PS2_USE_USART
+#define PS2_USART_INIT() do {   \
+    PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT);   \
+    PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT);     \
+    UCSR1C = ((1 << UMSEL10) |  \
+              (3 << UPM10)   |  \
+              (0 << USBS1)   |  \
+              (3 << UCSZ10)  |  \
+              (0 << UCPOL1));   \
+    UCSR1A = 0;                 \
+    UBRR1H = 0;                 \
+    UBRR1L = 0;                 \
+} while (0)
+#define PS2_USART_RX_INT_ON() do {  \
+    UCSR1B = ((1 << RXCIE1) |       \
+              (1 << RXEN1));        \
+} while (0)
+#define PS2_USART_RX_POLL_ON() do { \
+    UCSR1B = (1 << RXEN1);          \
+} while (0)
+#define PS2_USART_OFF() do {    \
+    UCSR1C = 0;                 \
+    UCSR1B &= ~((1 << RXEN1) |  \
+                (1 << TXEN1));  \
+} while (0)
+#define PS2_USART_RX_READY      (UCSR1A & (1<<RXC1))
+#define PS2_USART_RX_DATA       UDR1
+#define PS2_USART_ERROR         (UCSR1A & ((1<<FE1) | (1<<DOR1) | (1<<UPE1)))
+#define PS2_USART_RX_VECT       USART1_RX_vect
+#endif
+
 #endif
 
 /*
diff --git a/keyboard/tentapad/matrix.c b/keyboard/tentapad/matrix.c
index b27f47c6..475b070f 100644
--- a/keyboard/tentapad/matrix.c
+++ b/keyboard/tentapad/matrix.c
@@ -47,12 +47,7 @@ static matrix_row_t read_cols(void);
 static void init_cols(void);
 
 #ifdef PS2_MOUSE_ENABLE
-static uint8_t ps2_mouse_detected;
-
-uint8_t ps2_enabled(void)
-{
-    return ps2_mouse_detected;
-}
+uint8_t ps2_mouse_enabled;
 #endif
 
 inline
@@ -71,15 +66,16 @@ void matrix_init(void)
 {
 #ifdef PS2_MOUSE_ENABLE
     // ps2 mouse detect
-    DDRC &= ~(1<<PC2);
-    PORTC |= (1<<PC2);
-    if (PINC & (1<<PC2)) {
-        ps2_mouse_detected = 0;
+    DDRD &= ~(1<<PD3);
+    PORTD |= (1<<PD3);
+    _delay_us(30);
+    if (PIND & (1<<PD3)) {
+        ps2_mouse_enabled = 0;
     }
     else {
-        ps2_mouse_detected = 1;
+        ps2_mouse_enabled = 1;
     }
-    PORTC &= ~(1<<PC2);
+    PORTD &= ~(1<<PD3);
 #endif
 
     keymaps_cache_init();
diff --git a/protocol/ps2.h b/protocol/ps2.h
index 2e75d13f..acde679c 100644
--- a/protocol/ps2.h
+++ b/protocol/ps2.h
@@ -91,7 +91,6 @@ 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);
 
 
 /*--------------------------------------------------------------------