Merge remote-tracking branch 'origin/master' into develop

60 files changed, 96 insertions, 258 deletions

diff --git a/drivers/avr/hd44780.h b/drivers/avr/hd44780.h
index e60817e989..08e60f8a44 100644
--- a/drivers/avr/hd44780.h
+++ b/drivers/avr/hd44780.h
@@ -1,5 +1,3 @@
-#ifndef LCD_H
-#define LCD_H
 /*************************************************************************
  Title	:   C include file for the HD44780U LCD library (lcd.c)
  Author:    Peter Fleury <pfleury@gmx.ch>  http://tinyurl.com/peterfleury
@@ -43,6 +41,8 @@
 
 */
 
+#pragma once
+
 #include <inttypes.h>
 #include <avr/pgmspace.h>
 
@@ -346,5 +346,3 @@ extern void lcd_data(uint8_t data);
 #define lcd_puts_P(__s) lcd_puts_p(PSTR(__s))
 
 /**@}*/
-
-#endif  // LCD_H
diff --git a/drivers/avr/i2c_master.h b/drivers/avr/i2c_master.h
index 4a35867cd0..e5af73364b 100644
--- a/drivers/avr/i2c_master.h
+++ b/drivers/avr/i2c_master.h
@@ -17,8 +17,7 @@
  * GitHub repository: https://github.com/g4lvanix/I2C-master-lib
  */
 
-#ifndef I2C_MASTER_H
-#define I2C_MASTER_H
+#pragma once
 
 #define I2C_READ 0x01
 #define I2C_WRITE 0x00
@@ -42,5 +41,3 @@ i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16
 i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
 i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
 void         i2c_stop(void);
-
-#endif  // I2C_MASTER_H
diff --git a/drivers/avr/i2c_slave.h b/drivers/avr/i2c_slave.h
index 5d92150e65..1cd0625ef4 100644
--- a/drivers/avr/i2c_slave.h
+++ b/drivers/avr/i2c_slave.h
@@ -20,8 +20,7 @@
        Read or write to the necessary buffer according to the opperation.
  */
 
-#ifndef I2C_SLAVE_H
-#define I2C_SLAVE_H
+#pragma once
 
 #define I2C_SLAVE_REG_COUNT 30
 
@@ -29,5 +28,3 @@ extern volatile uint8_t i2c_slave_reg[I2C_SLAVE_REG_COUNT];
 
 void i2c_slave_init(uint8_t address);
 void i2c_slave_stop(void);
-
-#endif  // I2C_SLAVE_H
diff --git a/drivers/avr/ssd1306.h b/drivers/avr/ssd1306.h
index 9131afcf61..6eecdcfaa4 100644
--- a/drivers/avr/ssd1306.h
+++ b/drivers/avr/ssd1306.h
@@ -1,5 +1,4 @@
-#ifndef SSD1306_H
-#define SSD1306_H
+#pragma once
 
 #include <stdbool.h>
 #include <stdio.h>
@@ -86,5 +85,3 @@ void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
 void matrix_write(struct CharacterMatrix *matrix, const char *data);
 void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
 void matrix_render(struct CharacterMatrix *matrix);
-
-#endif
diff --git a/tmk_core/common/action.h b/tmk_core/common/action.h
index 345c030c94..81cd54369c 100644
--- a/tmk_core/common/action.h
+++ b/tmk_core/common/action.h
@@ -14,8 +14,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef ACTION_H
-#define ACTION_H
+
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -124,5 +124,3 @@ void debug_action(action_t action);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* ACTION_H */
diff --git a/tmk_core/common/action_code.h b/tmk_core/common/action_code.h
index eea554ff21..eb18c36ae8 100644
--- a/tmk_core/common/action_code.h
+++ b/tmk_core/common/action_code.h
@@ -14,8 +14,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef ACTION_CODE_H
-#define ACTION_CODE_H
+
+#pragma once
 
 /** \brief Action codes
  *
@@ -306,5 +306,3 @@ enum swap_hands_param_tap_op {
 #define ACTION_SWAP_HANDS_OFF_ON() ACTION(ACT_SWAP_HANDS, OP_SH_OFF_ON)
 #define ACTION_SWAP_HANDS_ON() ACTION(ACT_SWAP_HANDS, OP_SH_ON)
 #define ACTION_SWAP_HANDS_OFF() ACTION(ACT_SWAP_HANDS, OP_SH_OFF)
-
-#endif /* ACTION_CODE_H */
diff --git a/tmk_core/common/action_layer.h b/tmk_core/common/action_layer.h
index f9f6861120..d72cd3e3a5 100644
--- a/tmk_core/common/action_layer.h
+++ b/tmk_core/common/action_layer.h
@@ -14,8 +14,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef ACTION_LAYER_H
-#define ACTION_LAYER_H
+
+#pragma once
 
 #include <stdint.h>
 #include "keyboard.h"
@@ -120,5 +120,3 @@ uint8_t layer_switch_get_layer(keypos_t key);
 
 /* return action depending on current layer status */
 action_t layer_switch_get_action(keypos_t key);
-
-#endif
diff --git a/tmk_core/common/action_macro.h b/tmk_core/common/action_macro.h
index 21004ead62..685e2c6ffc 100644
--- a/tmk_core/common/action_macro.h
+++ b/tmk_core/common/action_macro.h
@@ -14,8 +14,9 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef ACTION_MACRO_H
-#define ACTION_MACRO_H
+
+#pragma once
+
 #include <stdint.h>
 #include "progmem.h"
 
@@ -120,5 +121,3 @@ enum macro_command_id {
 /* for backward comaptibility */
 #define MD(key) DOWN(KC_##key)
 #define MU(key) UP(KC_##key)
-
-#endif /* ACTION_MACRO_H */
diff --git a/tmk_core/common/action_tapping.h b/tmk_core/common/action_tapping.h
index 7015ce7612..087090f805 100644
--- a/tmk_core/common/action_tapping.h
+++ b/tmk_core/common/action_tapping.h
@@ -14,8 +14,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef ACTION_TAPPING_H
-#define ACTION_TAPPING_H
+
+#pragma once
 
 /* period of tapping(ms) */
 #ifndef TAPPING_TERM
@@ -36,5 +36,3 @@ uint16_t get_event_keycode(keyevent_t event, bool update_layer_cache);
 uint16_t get_tapping_term(uint16_t keycode, keyrecord_t *record);
 void     action_tapping_process(keyrecord_t record);
 #endif
-
-#endif
diff --git a/tmk_core/common/action_util.h b/tmk_core/common/action_util.h
index 743ff1406b..ff29f79b09 100644
--- a/tmk_core/common/action_util.h
+++ b/tmk_core/common/action_util.h
@@ -14,8 +14,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef ACTION_UTIL_H
-#define ACTION_UTIL_H
+
+#pragma once
 
 #include <stdint.h>
 #include "report.h"
@@ -98,5 +98,3 @@ void clear_oneshot_swaphands(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/tmk_core/common/arm_atsam/printf.h b/tmk_core/common/arm_atsam/printf.h
index ad66722205..95557f5b01 100644
--- a/tmk_core/common/arm_atsam/printf.h
+++ b/tmk_core/common/arm_atsam/printf.h
@@ -1,10 +1,7 @@
-#ifndef _PRINTF_H_
-#define _PRINTF_H_
+#pragma once
 
 #define CONSOLE_PRINTBUF_SIZE 512
 
 void console_printf(char *fmt, ...);
 
 #define __xprintf console_printf
-
-#endif  //_PRINTF_H_
diff --git a/tmk_core/common/avr/suspend_avr.h b/tmk_core/common/avr/suspend_avr.h
index e4cc0be505..6df048f3bb 100644
--- a/tmk_core/common/avr/suspend_avr.h
+++ b/tmk_core/common/avr/suspend_avr.h
@@ -1,5 +1,4 @@
-#ifndef SUSPEND_AVR_H
-#define SUSPEND_AVR_H
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -24,5 +23,3 @@ __asm__ __volatile__ (                      \
     : "r0"  \
 )
 // clang-format on
-
-#endif
diff --git a/tmk_core/common/avr/timer_avr.h b/tmk_core/common/avr/timer_avr.h
index 9aea21c651..c1b726bd01 100644
--- a/tmk_core/common/avr/timer_avr.h
+++ b/tmk_core/common/avr/timer_avr.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef TIMER_AVR_H
-#define TIMER_AVR_H 1
+#pragma once
 
 #include <stdint.h>
 
@@ -38,5 +37,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #if (TIMER_RAW_TOP > 255)
 #    error "Timer0 can't count 1ms at this clock freq. Use larger prescaler."
 #endif
-
-#endif
diff --git a/tmk_core/common/avr/xprintf.h b/tmk_core/common/avr/xprintf.h
index 70e0f8e48a..80834f1714 100644
--- a/tmk_core/common/avr/xprintf.h
+++ b/tmk_core/common/avr/xprintf.h
@@ -2,8 +2,7 @@
    Extended itoa, puts and printf                    (C)ChaN, 2011
 -----------------------------------------------------------------------------*/
 
-#ifndef XPRINTF_H
-#define XPRINTF_H
+#pragma once
 
 #include <inttypes.h>
 #include <avr/pgmspace.h>
@@ -102,5 +101,3 @@ char xatoi(char **str, long *ret);
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/tmk_core/common/bootloader.h b/tmk_core/common/bootloader.h
index 19260a0797..25ebd95288 100644
--- a/tmk_core/common/bootloader.h
+++ b/tmk_core/common/bootloader.h
@@ -15,10 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef BOOTLOADER_H
-#define BOOTLOADER_H
+#pragma once
 
 /* give code for your bootloader to come up if needed */
 void bootloader_jump(void);
-
-#endif
diff --git a/tmk_core/common/bootmagic.h b/tmk_core/common/bootmagic.h
index c64dc17858..8209d0194f 100644
--- a/tmk_core/common/bootmagic.h
+++ b/tmk_core/common/bootmagic.h
@@ -1,5 +1,4 @@
-#ifndef BOOTMAGIC_H
-#define BOOTMAGIC_H
+#pragma once
 
 /* FIXME: Add special doxygen comments for defines here. */
 
@@ -101,5 +100,3 @@
 
 void bootmagic(void);
 bool bootmagic_scan_keycode(uint8_t keycode);
-
-#endif
diff --git a/tmk_core/common/chibios/eeprom_stm32.h b/tmk_core/common/chibios/eeprom_stm32.h
index 373325cd2f..4dac7c1b59 100644
--- a/tmk_core/common/chibios/eeprom_stm32.h
+++ b/tmk_core/common/chibios/eeprom_stm32.h
@@ -21,8 +21,7 @@
  * This library also assumes that the pages are not used by the firmware.
  */
 
-#ifndef __EEPROM_H
-#define __EEPROM_H
+#pragma once
 
 #include <ch.h>
 #include <hal.h>
@@ -83,5 +82,3 @@ uint16_t EEPROM_Init(void);
 void     EEPROM_Erase(void);
 uint16_t EEPROM_WriteDataByte(uint16_t Address, uint8_t DataByte);
 uint8_t  EEPROM_ReadDataByte(uint16_t Address);
-
-#endif /* __EEPROM_H */
diff --git a/tmk_core/common/chibios/flash_stm32.h b/tmk_core/common/chibios/flash_stm32.h
index 8a874f6065..90d5bff47e 100644
--- a/tmk_core/common/chibios/flash_stm32.h
+++ b/tmk_core/common/chibios/flash_stm32.h
@@ -16,8 +16,7 @@
  * Modifications for QMK and STM32F303 by Yiancar
  */
 
-#ifndef __FLASH_STM32_H
-#define __FLASH_STM32_H
+#pragma once
 
 #ifdef __cplusplus
 extern "C" {
@@ -41,5 +40,3 @@ void FLASH_ClearFlag(uint32_t FLASH_FLAG);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* __FLASH_STM32_H */
diff --git a/tmk_core/common/debug.h b/tmk_core/common/debug.h
index f9d611bb03..3d2e2315ef 100644
--- a/tmk_core/common/debug.h
+++ b/tmk_core/common/debug.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef DEBUG_H
-#define DEBUG_H 1
+#pragma once
 
 #include <stdbool.h>
 #include "print.h"
@@ -168,5 +167,3 @@ extern debug_config_t debug_config;
 #    define debug_bin_reverse(data)
 
 #endif /* NO_DEBUG */
-
-#endif
diff --git a/tmk_core/common/eeconfig.h b/tmk_core/common/eeconfig.h
index 6fbe789031..c4f0483913 100644
--- a/tmk_core/common/eeconfig.h
+++ b/tmk_core/common/eeconfig.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef EECONFIG_H
-#define EECONFIG_H
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -111,5 +110,3 @@ void     eeconfig_update_haptic(uint32_t val);
 
 bool eeconfig_read_handedness(void);
 void eeconfig_update_handedness(bool val);
-
-#endif
diff --git a/tmk_core/common/eeprom.h b/tmk_core/common/eeprom.h
index 8a81e70668..f5b3f0ad53 100644
--- a/tmk_core/common/eeprom.h
+++ b/tmk_core/common/eeprom.h
@@ -1,5 +1,4 @@
-#ifndef TMK_CORE_COMMON_EEPROM_H_
-#define TMK_CORE_COMMON_EEPROM_H_
+#pragma once
 
 #if defined(__AVR__) && !defined(EEPROM_DRIVER)
 #    include <avr/eeprom.h>
@@ -20,5 +19,3 @@ void     eeprom_update_word(uint16_t *__p, uint16_t __value);
 void     eeprom_update_dword(uint32_t *__p, uint32_t __value);
 void     eeprom_update_block(const void *__src, void *__dst, size_t __n);
 #endif
-
-#endif /* TMK_CORE_COMMON_EEPROM_H_ */
diff --git a/tmk_core/common/host_driver.h b/tmk_core/common/host_driver.h
index 3cfec40cca..f34a220530 100644
--- a/tmk_core/common/host_driver.h
+++ b/tmk_core/common/host_driver.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef HOST_DRIVER_H
-#define HOST_DRIVER_H
+#pragma once
 
 #include <stdint.h>
 #include "report.h"
@@ -31,5 +30,3 @@ typedef struct {
     void (*send_system)(uint16_t);
     void (*send_consumer)(uint16_t);
 } host_driver_t;
-
-#endif
diff --git a/tmk_core/common/keyboard.h b/tmk_core/common/keyboard.h
index caa18e7e76..d04e685cdb 100644
--- a/tmk_core/common/keyboard.h
+++ b/tmk_core/common/keyboard.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef KEYBOARD_H
-#define KEYBOARD_H
+#pragma once
 
 #include <stdbool.h>
 #include <stdint.h>
@@ -77,5 +76,3 @@ void housekeeping_task_user(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/tmk_core/common/keycode.h b/tmk_core/common/keycode.h
index 5c8ba8fe60..d35e44d8dc 100644
--- a/tmk_core/common/keycode.h
+++ b/tmk_core/common/keycode.h
@@ -21,8 +21,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  * See https://web.archive.org/web/20060218214400/http://www.usb.org/developers/devclass_docs/Hut1_12.pdf
  * or http://www.usb.org/developers/hidpage/Hut1_12v2.pdf (older)
  */
-#ifndef KEYCODE_H
-#define KEYCODE_H
+
+#pragma once
 
 /* FIXME: Add doxygen comments here */
 
@@ -542,4 +542,3 @@ enum mouse_keys {
     KC_MS_ACCEL1,
     KC_MS_ACCEL2
 };
-#endif
diff --git a/tmk_core/common/magic.h b/tmk_core/common/magic.h
index 3fa2d8b81c..a6552c04dc 100644
--- a/tmk_core/common/magic.h
+++ b/tmk_core/common/magic.h
@@ -1,6 +1,3 @@
-#ifndef MAGIC_H
-#define MAGIC_H
+#pragma once
 
 void magic(void);
-
-#endif
diff --git a/tmk_core/common/matrix.h b/tmk_core/common/matrix.h
index 31ec844302..e36f014600 100644
--- a/tmk_core/common/matrix.h
+++ b/tmk_core/common/matrix.h
@@ -14,8 +14,8 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
-#ifndef MATRIX_H
-#define MATRIX_H
+
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -76,5 +76,3 @@ void matrix_scan_user(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif
diff --git a/tmk_core/common/mousekey.h b/tmk_core/common/mousekey.h
index 703854b826..911d11eeb9 100644
--- a/tmk_core/common/mousekey.h
+++ b/tmk_core/common/mousekey.h
@@ -15,9 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef MOUSEKEY_H
-#    define MOUSEKEY_H
-#endif
+#pragma once
 
 #include <stdbool.h>
 #include "host.h"
diff --git a/tmk_core/common/nodebug.h b/tmk_core/common/nodebug.h
index b9c8b3ac0f..0b176684bd 100644
--- a/tmk_core/common/nodebug.h
+++ b/tmk_core/common/nodebug.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef NODEBUG_H
-#define NODEBUG_H
+#pragma once
 
 #ifndef NO_DEBUG
 #    define NO_DEBUG
@@ -25,5 +24,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #else
 #    include "debug.h"
 #endif
-
-#endif
diff --git a/tmk_core/common/print.h b/tmk_core/common/print.h
index 1c77236212..647a5aa053 100644
--- a/tmk_core/common/print.h
+++ b/tmk_core/common/print.h
@@ -22,8 +22,7 @@
  * THE SOFTWARE.
  */
 
-#ifndef PRINT_H__
-#define PRINT_H__ 1
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -269,5 +268,3 @@ extern "C"
 #define pbin16(data) print_bin16(data)
 #define pbin_reverse(data) print_bin_reverse8(data)
 #define pbin_reverse16(data) print_bin_reverse16(data)
-
-#endif
diff --git a/tmk_core/common/raw_hid.h b/tmk_core/common/raw_hid.h
index c579157f14..6d60ab2bff 100644
--- a/tmk_core/common/raw_hid.h
+++ b/tmk_core/common/raw_hid.h
@@ -1,8 +1,5 @@
-#ifndef _RAW_HID_H_
-#define _RAW_HID_H_
+#pragma once
 
 void raw_hid_receive(uint8_t *data, uint8_t length);
 
 void raw_hid_send(uint8_t *data, uint8_t length);
-
-#endif
diff --git a/tmk_core/common/sendchar.h b/tmk_core/common/sendchar.h
index bd7b94fd99..b150dd464e 100644
--- a/tmk_core/common/sendchar.h
+++ b/tmk_core/common/sendchar.h
@@ -15,8 +15,7 @@ You shou