qmk_firmware/common_features.mk

# Copyright 2017 Fred Sundvik
#
# 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
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# 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/>.

SERIAL_PATH := $(QUANTUM_PATH)/serial_link

QUANTUM_SRC += \
    $(QUANTUM_DIR)/quantum.c \
    $(QUANTUM_DIR)/bitwise.c \
    $(QUANTUM_DIR)/led.c \
    $(QUANTUM_DIR)/keymap_common.c \
    $(QUANTUM_DIR)/keycode_config.c

ifeq ($(strip $(DEBUG_MATRIX_SCAN_RATE_ENABLE)), yes)
    OPT_DEFS += -DDEBUG_MATRIX_SCAN_RATE
    CONSOLE_ENABLE = yes
else ifeq ($(strip $(DEBUG_MATRIX_SCAN_RATE_ENABLE)), api)
    OPT_DEFS += -DDEBUG_MATRIX_SCAN_RATE
endif

ifeq ($(strip $(API_SYSEX_ENABLE)), yes)
    OPT_DEFS += -DAPI_SYSEX_ENABLE
    OPT_DEFS += -DAPI_ENABLE
    MIDI_ENABLE=yes
    SRC += $(QUANTUM_DIR)/api/api_sysex.c
    SRC += $(QUANTUM_DIR)/api.c
endif

ifeq ($(strip $(COMMAND_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/command.c
    OPT_DEFS += -DCOMMAND_ENABLE
endif

AUDIO_ENABLE ?= no
ifeq ($(strip $(AUDIO_ENABLE)), yes)
    ifeq ($(PLATFORM),CHIBIOS)
        AUDIO_DRIVER ?= dac_basic
        ifeq ($(strip $(AUDIO_DRIVER)), dac_basic)
            OPT_DEFS += -DAUDIO_DRIVER_DAC
        else ifeq ($(strip $(AUDIO_DRIVER)), dac_additive)
            OPT_DEFS += -DAUDIO_DRIVER_DAC
        ## stm32f2 and above have a usable DAC unit, f1 do not, and need to use pwm instead
        else ifeq ($(strip $(AUDIO_DRIVER)), pwm_software)
            OPT_DEFS += -DAUDIO_DRIVER_PWM
        else ifeq ($(strip $(AUDIO_DRIVER)), pwm_hardware)
            OPT_DEFS += -DAUDIO_DRIVER_PWM
        endif
    else
        # fallback for all other platforms is pwm
        AUDIO_DRIVER ?= pwm_hardware
        OPT_DEFS += -DAUDIO_DRIVER_PWM
    endif
    OPT_DEFS += -DAUDIO_ENABLE
    MUSIC_ENABLE = yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_audio.c
    SRC += $(QUANTUM_DIR)/process_keycode/process_clicky.c
    SRC += $(QUANTUM_DIR)/audio/audio.c ## common audio code, hardware agnostic
    SRC += $(QUANTUM_DIR)/audio/driver_$(PLATFORM_KEY)_$(strip $(AUDIO_DRIVER)).c
    SRC += $(QUANTUM_DIR)/audio/voices.c
    SRC += $(QUANTUM_DIR)/audio/luts.c
endif

ifeq ($(strip $(SEQUENCER_ENABLE)), yes)
    OPT_DEFS += -DSEQUENCER_ENABLE
    MUSIC_ENABLE = yes
    SRC += $(QUANTUM_DIR)/sequencer/sequencer.c
    SRC += $(QUANTUM_DIR)/process_keycode/process_sequencer.c
endif

ifeq ($(strip $(MIDI_ENABLE)), yes)
    OPT_DEFS += -DMIDI_ENABLE
    MUSIC_ENABLE = yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_midi.c
endif

MUSIC_ENABLE ?= no
ifeq ($(MUSIC_ENABLE), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_music.c
endif

ifeq ($(strip $(STENO_ENABLE)), yes)
    OPT_DEFS += -DSTENO_ENABLE
    VIRTSER_ENABLE ?= yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_steno.c
endif

ifeq ($(strip $(VIRTSER_ENABLE)), yes)
    OPT_DEFS += -DVIRTSER_ENABLE
endif

ifeq ($(strip $(MOUSEKEY_ENABLE)), yes)
    OPT_DEFS += -DMOUSEKEY_ENABLE
    OPT_DEFS += -DMOUSE_ENABLE
    SRC += $(QUANTUM_DIR)/mousekey.c
endif

ifeq ($(strip $(POINTING_DEVICE_ENABLE)), yes)
    OPT_DEFS += -DPOINTING_DEVICE_ENABLE
    OPT_DEFS += -DMOUSE_ENABLE
    SRC += $(QUANTUM_DIR)/pointing_device.c
endif

VALID_EEPROM_DRIVER_TYPES := vendor custom transient i2c spi
EEPROM_DRIVER ?= vendor
ifeq ($(filter $(EEPROM_DRIVER),$(VALID_EEPROM_DRIVER_TYPES)),)
  $(error EEPROM_DRIVER="$(EEPROM_DRIVER)" is not a valid EEPROM driver)
else
  OPT_DEFS += -DEEPROM_ENABLE
  ifeq ($(strip $(EEPROM_DRIVER)), custom)
    OPT_DEFS += -DEEPROM_DRIVER -DEEPROM_CUSTOM
    COMMON_VPATH += $(DRIVER_PATH)/eeprom
    SRC += eeprom_driver.c
  else ifeq ($(strip $(EEPROM_DRIVER)), i2c)
    OPT_DEFS += -DEEPROM_DRIVER -DEEPROM_I2C
    COMMON_VPATH += $(DRIVER_PATH)/eeprom
    QUANTUM_LIB_SRC += i2c_master.c
    SRC += eeprom_driver.c eeprom_i2c.c
  else ifeq ($(strip $(EEPROM_DRIVER)), spi)
    OPT_DEFS += -DEEPROM_DRIVER -DEEPROM_SPI
    COMMON_VPATH += $(DRIVER_PATH)/eeprom
    QUANTUM_LIB_SRC += spi_master.c
    SRC += eeprom_driver.c eeprom_spi.c
  else ifeq ($(strip $(EEPROM_DRIVER)), transient)
    OPT_DEFS += -DEEPROM_DRIVER -DEEPROM_TRANSIENT
    COMMON_VPATH += $(DRIVER_PATH)/eeprom
    SRC += eeprom_driver.c eeprom_transient.c
  else ifeq ($(strip $(EEPROM_DRIVER)), vendor)
    OPT_DEFS += -DEEPROM_VENDOR
    ifeq ($(PLATFORM),AVR)
      # Automatically provided by avr-libc, nothing required
    else ifeq ($(PLATFORM),CHIBIOS)
      ifeq ($(MCU_SERIES), STM32F3xx)
        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
        OPT_DEFS += -DEEPROM_EMU_STM32F303xC
        OPT_DEFS += -DSTM32_EEPROM_ENABLE
      else ifeq ($(MCU_SERIES), STM32F1xx)
        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
        OPT_DEFS += -DEEPROM_EMU_STM32F103xB
        OPT_DEFS += -DSTM32_EEPROM_ENABLE
      else ifeq ($(MCU_SERIES)_$(MCU_LDSCRIPT), STM32F0xx_STM32F072xB)
        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
        OPT_DEFS += -DEEPROM_EMU_STM32F072xB
        OPT_DEFS += -DSTM32_EEPROM_ENABLE
      else ifeq ($(MCU_SERIES)_$(MCU_LDSCRIPT), STM32F0xx_STM32F042x6)

        # Stack sizes: Since this chip has limited RAM capacity, the stack area needs to be reduced.
        # This ensures that the EEPROM page buffer fits into RAM
        USE_PROCESS_STACKSIZE = 0x600
        USE_EXCEPTIONS_STACKSIZE = 0x300

        SRC += $(PLATFORM_COMMON_DIR)/eeprom_stm32.c
        SRC += $(PLATFORM_COMMON_DIR)/flash_stm32.c
        OPT_DEFS += -DEEPROM_EMU_STM32F042x6
        OPT_DEFS += -DSTM32_EEPROM_ENABLE
      else ifneq ($(filter $(MCU_SERIES),STM32L0xx STM32L1xx),)
        OPT_DEFS += -DEEPROM_DRIVER
        COMMON_VPATH += $(DRIVER_PATH)/eeprom
        SRC += eeprom_driver.c eeprom_stm32_L0_L1.c
      else
        # This will effectively work the same as "transient" if not supported by the chip
        SRC += $(PLATFORM_COMMON_DIR)/eeprom_teensy.c
      endif
    else ifeq ($(PLATFORM),ARM_ATSAM)
      SRC += $(PLATFORM_COMMON_DIR)/eeprom.c
    else ifeq ($(PLATFORM),TEST)
      SRC += $(PLATFORM_COMMON_DIR)/eeprom.c
    endif
  endif
endif

RGBLIGHT_ENABLE ?= no
VALID_RGBLIGHT_TYPES := WS2812 APA102 custom

ifeq ($(strip $(RGBLIGHT_CUSTOM_DRIVER)), yes)
    RGBLIGHT_DRIVER ?= custom
endif

ifeq ($(strip $(RGBLIGHT_ENABLE)), yes)
    RGBLIGHT_DRIVER ?= WS2812

    ifeq ($(filter $(RGBLIGHT_DRIVER),$(VALID_RGBLIGHT_TYPES)),)
        $(error RGBLIGHT_DRIVER="$(RGBLIGHT_DRIVER)" is not a valid RGB type)
    else
        POST_CONFIG_H += $(QUANTUM_DIR)/rgblight_post_config.h
        OPT_DEFS += -DRGBLIGHT_ENABLE
        SRC += $(QUANTUM_DIR)/color.c
        SRC += $(QUANTUM_DIR)/rgblight.c
        CIE1931_CURVE := yes
        RGB_KEYCODES_ENABLE := yes
    endif

    ifeq ($(strip $(RGBLIGHT_DRIVER)), WS2812)
        WS2812_DRIVER_REQUIRED := yes
    endif

    ifeq ($(strip $(RGBLIGHT_DRIVER)), APA102)
        APA102_DRIVER_REQUIRED := yes
    endif

    ifeq ($(strip $(RGBLIGHT_DRIVER)), custom)
        OPT_DEFS += -DRGBLIGHT_CUSTOM_DRIVER
    endif
endif

LED_MATRIX_ENABLE ?= no
VALID_LED_MATRIX_TYPES := IS31FL3731 custom
# TODO: IS31FL3733 IS31FL3737 IS31FL3741

ifeq ($(strip $(LED_MATRIX_ENABLE)), yes)
    ifeq ($(filter $(LED_MATRIX_DRIVER),$(VALID_LED_MATRIX_TYPES)),)
        $(error LED_MATRIX_DRIVER="$(LED_MATRIX_DRIVER)" is not a valid matrix type)
    else
        BACKLIGHT_ENABLE = yes
        BACKLIGHT_DRIVER = custom
        OPT_DEFS += -DLED_MATRIX_ENABLE
        SRC += $(QUANTUM_DIR)/led_matrix.c
        SRC += $(QUANTUM_DIR)/led_matrix_drivers.c
    endif

    ifeq ($(strip $(LED_MATRIX_DRIVER)), IS31FL3731)
        OPT_DEFS += -DIS31FL3731 -DSTM32_I2C -DHAL_USE_I2C=TRUE
        COMMON_VPATH += $(DRIVER_PATH)/issi
        SRC += is31fl3731-simple.c
        QUANTUM_LIB_SRC += i2c_master.c
    endif
endif

RGB_MATRIX_ENABLE ?= no
VALID_RGB_MATRIX_TYPES := IS31FL3731 IS31FL3733 IS31FL3737 IS31FL3741 WS2812 custom

ifeq ($(strip $(RGB_MATRIX_ENABLE)), yes)
    ifeq ($(filter $(RGB_MATRIX_DRIVER),$(VALID_RGB_MATRIX_TYPES)),)
        $(error "$(RGB_MATRIX_DRIVER)" is not a valid matrix type)
    endif
    OPT_DEFS += -DRGB_MATRIX_ENABLE
ifneq (,$(filter $(MCU), atmega16u2 atmega32u2 at90usb162))
    # ATmegaxxU2 does not have hardware MUL instruction - lib8tion must be told to use software multiplication routines
    OPT_DEFS += -DLIB8_ATTINY
endif
    SRC += $(QUANTUM_DIR)/color.c
    SRC += $(QUANTUM_DIR)/rgb_matrix.c
    SRC += $(QUANTUM_DIR)/rgb_matrix_drivers.c
    CIE1931_CURVE := yes
    RGB_KEYCODES_ENABLE := yes

    ifeq ($(strip $(RGB_MATRIX_DRIVER)), IS31FL3731)
        OPT_DEFS += -DIS31FL3731 -DSTM32_I2C -DHAL_USE_I2C=TRUE
        COMMON_VPATH += $(DRIVER_PATH)/issi
        SRC += is31fl3731.c
        QUANTUM_LIB_SRC += i2c_master.c
    endif

    ifeq ($(strip $(RGB_MATRIX_DRIVER)), IS31FL3733)
        OPT_DEFS += -DIS31FL3733 -DSTM32_I2C -DHAL_USE_I2C=TRUE
        COMMON_VPATH += $(DRIVER_PATH)/issi
        SRC += is31fl3733.c
        QUANTUM_LIB_SRC += i2c_master.c
    endif

    ifeq ($(strip $(RGB_MATRIX_DRIVER)), IS31FL3737)
        OPT_DEFS += -DIS31FL3737 -DSTM32_I2C -DHAL_USE_I2C=TRUE
        COMMON_VPATH += $(DRIVER_PATH)/issi
        SRC += is31fl3737.c
        QUANTUM_LIB_SRC += i2c_master.c
    endif

    ifeq ($(strip $(RGB_MATRIX_DRIVER)), IS31FL3741)
        OPT_DEFS += -DIS31FL3741 -DSTM32_I2C -DHAL_USE_I2C=TRUE
        COMMON_VPATH += $(DRIVER_PATH)/issi
        SRC += is31fl3741.c
        QUANTUM_LIB_SRC += i2c_master.c
    endif

    ifeq ($(strip $(RGB_MATRIX_DRIVER)), WS2812)
        OPT_DEFS += -DWS2812
        WS2812_DRIVER_REQUIRED := yes
    endif

    ifeq ($(strip $(RGB_MATRIX_DRIVER)), APA102)
        OPT_DEFS += -DAPA102
        APA102_DRIVER_REQUIRED := yes
    endif

    ifeq ($(strip $(RGB_MATRIX_CUSTOM_KB)), yes)
        OPT_DEFS += -DRGB_MATRIX_CUSTOM_KB
    endif

    ifeq ($(strip $(RGB_MATRIX_CUSTOM_USER)), yes)
        OPT_DEFS += -DRGB_MATRIX_CUSTOM_USER
    endif
endif

ifeq ($(strip $(RGB_KEYCODES_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_rgb.c
endif

ifeq ($(strip $(PRINTING_ENABLE)), yes)
    OPT_DEFS += -DPRINTING_ENABLE
    SRC += $(QUANTUM_DIR)/process_keycode/process_printer.c
    SRC += $(TMK_DIR)/protocol/serial_uart.c
endif

ifeq ($(strip $(SERIAL_LINK_ENABLE)), yes)
    SERIAL_SRC := $(wildcard $(SERIAL_PATH)/protocol/*.c)
    SERIAL_SRC += $(wildcard $(SERIAL_PATH)/system/*.c)
    SERIAL_DEFS += -DSERIAL_LINK_ENABLE
    COMMON_VPATH += $(SERIAL_PATH)

    SRC += $(patsubst $(QUANTUM_PATH)/%,%,$(SERIAL_SRC))
    OPT_DEFS += $(SERIAL_DEFS)
    VAPTH += $(SERIAL_PATH)
endif

VARIABLE_TRACE ?= no
ifneq ($(strip $(VARIABLE_TRACE)),no)
    SRC += $(QUANTUM_DIR)/variable_trace.c
    OPT_DEFS += -DNUM_TRACED_VARIABLES=$(strip $(VARIABLE_TRACE))
    ifneq ($(strip $(MAX_VARIABLE_TRACE_SIZE)),)
        OPT_DEFS += -DMAX_VARIABLE_TRACE_SIZE=$(strip $(MAX_VARIABLE_TRACE_SIZE))
    endif
endif

ifeq ($(strip $(LCD_ENABLE)), yes)
    CIE1931_CURVE := yes
endif

# backward compat
ifeq ($(strip $(BACKLIGHT_CUSTOM_DRIVER)), yes)
    BACKLIGHT_DRIVER := custom
endif

VALID_BACKLIGHT_TYPES := pwm timer software custom

BACKLIGHT_ENABLE ?= no
BACKLIGHT_DRIVER ?= pwm
ifeq ($(strip $(BACKLIGHT_ENABLE)), yes)
    ifeq ($(filter $(BACKLIGHT_DRIVER),$(VALID_BACKLIGHT_TYPES)),)
        $(error BACKLIGHT_DRIVER="$(BACKLIGHT_DRIVER)" is not a valid backlight type)
    endif

    COMMON_VPATH += $(QUANTUM_DIR)/backlight
    SRC += $(QUANTUM_DIR)/backlight/backlight.c
    SRC += $(QUANTUM_DIR)/process_keycode/process_backlight.c
    OPT_DEFS += -DBACKLIGHT_ENABLE

    ifeq ($(strip $(BACKLIGHT_DRIVER)), custom)
        OPT_DEFS += -DBACKLIGHT_CUSTOM_DRIVER
    else
        SRC += $(QUANTUM_DIR)/backlight/backlight_driver_common.c
        ifeq ($(strip $(BACKLIGHT_DRIVER)), pwm)
            SRC += $(QUANTUM_DIR)/backlight/backlight_$(PLATFORM_KEY).c
        else
            SRC += $(QUANTUM_DIR)/backlight/backlight_$(strip $(BACKLIGHT_DRIVER)).c
        endif
    endif
endif

VALID_WS2812_DRIVER_TYPES := bitbang pwm spi i2c

WS2812_DRIVER ?= bitbang
ifeq ($(strip $(WS2812_DRIVER_REQUIRED)), yes)
    ifeq ($(filter $(WS2812_DRIVER),$(VALID_WS2812_DRIVER_TYPES)),)
        $(error WS2812_DRIVER="$(WS2812_DRIVER)" is not a valid WS2812 driver)
    endif

    OPT_DEFS += -DWS2812_DRIVER_$(strip $(shell echo $(WS2812_DRIVER) | tr '[:lower:]' '[:upper:]'))

    ifeq ($(strip $(WS2812_DRIVER)), bitbang)
        SRC += ws2812.c
    else
        SRC += ws2812_$(strip $(WS2812_DRIVER)).c

        ifeq ($(strip $(PLATFORM)), CHIBIOS)
            ifeq ($(strip $(WS2812_DRIVER)), pwm)
                OPT_DEFS += -DSTM32_DMA_REQUIRED=TRUE
            endif
        endif
    endif

    # add extra deps
    ifeq ($(strip $(WS2812_DRIVER)), i2c)
        QUANTUM_LIB_SRC += i2c_master.c
    endif
endif

ifeq ($(strip $(APA102_DRIVER_REQUIRED)), yes)
    COMMON_VPATH += $(DRIVER_PATH)/apa102
    SRC += apa102.c
endif

ifeq ($(strip $(VISUALIZER_ENABLE)), yes)
    CIE1931_CURVE := yes
endif

ifeq ($(strip $(CIE1931_CURVE)), yes)
    OPT_DEFS += -DUSE_CIE1931_CURVE
    LED_TABLES := yes
endif

ifeq ($(strip $(LED_TABLES)), yes)
    SRC += $(QUANTUM_DIR)/led_tables.c
endif

ifeq ($(strip $(TERMINAL_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_terminal.c
    OPT_DEFS += -DTERMINAL_ENABLE
    OPT_DEFS += -DUSER_PRINT
endif

ifeq ($(strip $(USB_HID_ENABLE)), yes)
    include $(TMK_DIR)/protocol/usb_hid.mk
endif

ifeq ($(strip $(WPM_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/wpm.c
    OPT_DEFS += -DWPM_ENABLE
endif

ifeq ($(strip $(ENCODER_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/encoder.c
    OPT_DEFS += -DENCODER_ENABLE
endif

ifeq ($(strip $(VELOCIKEY_ENABLE)), yes)
    OPT_DEFS += -DVELOCIKEY_ENABLE
    SRC += $(QUANTUM_DIR)/velocikey.c
endif

ifeq ($(strip $(VIA_ENABLE)), yes)
    DYNAMIC_KEYMAP_ENABLE := yes
    RAW_ENABLE := yes
    BOOTMAGIC_ENABLE := lite
    SRC += $(QUANTUM_DIR)/via.c
    OPT_DEFS += -DVIA_ENABLE
endif

ifeq ($(strip $(DYNAMIC_KEYMAP_ENABLE)), yes)
    OPT_DEFS += -DDYNAMIC_KEYMAP_ENABLE
    SRC += $(QUANTUM_DIR)/dynamic_keymap.c
endif

ifeq ($(strip $(DIP_SWITCH_ENABLE)), yes)
    OPT_DEFS += -DDIP_SWITCH_ENABLE
    SRC += $(QUANTUM_DIR)/dip_switch.c
endif

VALID_CUSTOM_MATRIX_TYPES:= yes lite no

CUSTOM_MATRIX ?= no

ifneq ($(strip $(CUSTOM_MATRIX)), yes)
    ifeq ($(filter $(CUSTOM_MATRIX),$(VALID_CUSTOM_MATRIX_TYPES)),)
        $(error CUSTOM_MATRIX="$(CUSTOM_MATRIX)" is not a valid custom matrix type)
    endif

    # Include common stuff for all non custom matrix users
    QUANTUM_SRC += $(QUANTUM_DIR)/matrix_common.c

    # if 'lite' then skip the actual matrix implementation
    ifneq ($(strip $(CUSTOM_MATRIX)), lite)
        # Include the standard or split matrix code if needed
        ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
            QUANTUM_SRC += $(QUANTUM_DIR)/split_common/matrix.c
        else
            QUANTUM_SRC += $(QUANTUM_DIR)/matrix.c
        endif
    endif
endif

# Support for translating old names to new names:
ifeq ($(strip $(DEBOUNCE_TYPE)),sym_g)
    DEBOUNCE_TYPE:=sym_defer_g
else ifeq ($(strip $(DEBOUNCE_TYPE)),eager_pk)
    DEBOUNCE_TYPE:=sym_eager_pk
else ifeq ($(strip $(DEBOUNCE_TYPE)),sym_pk)
    DEBOUNCE_TYPE:=sym_defer_pk
else ifeq ($(strip $(DEBOUNCE_TYPE)),eager_pr)
    DEBOUNCE_TYPE:=sym_eager_pr
endif

DEBOUNCE_DIR:= $(QUANTUM_DIR)/debounce
# Debounce Modules. Set DEBOUNCE_TYPE=custom if including one manually.
DEBOUNCE_TYPE?= sym_defer_g
ifneq ($(strip $(DEBOUNCE_TYPE)), custom)
    QUANTUM_SRC += $(DEBOUNCE_DIR)/$(strip $(DEBOUNCE_TYPE)).c
endif

ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
    POST_CONFIG_H += $(QUANTUM_DIR)/split_common/post_config.h
    OPT_DEFS += -DSPLIT_KEYBOARD

    # Include files used by all split keyboards
    QUANTUM_SRC += $(QUANTUM_DIR)/split_common/split_util.c

    # Determine which (if any) transport files are required
    ifneq ($(strip $(SPLIT_TRANSPORT)), custom)
        QUANTUM_LIB_SRC += $(QUANTUM_DIR)/split_common/transport.c
        # Functions added via QUANTUM_LIB_SRC are only included in the final binary if they're called.
        # Unused functions are pruned away, which is why we can add multiple drivers here without bloat.
        ifeq ($(PLATFORM),AVR)
            ifneq ($(NO_I2C),yes)
                QUANTUM_LIB_SRC += i2c_master.c \
                                   i2c_slave.c
            endif
        endif

        SERIAL_DRIVER ?= bitbang
        OPT_DEFS += -DSERIAL_DRIVER_$(strip $(shell echo $(SERIAL_DRIVER) | tr '[:lower:]' '[:upper:]'))
        ifeq ($(strip $(SERIAL_DRIVER)), bitbang)
            QUANTUM_LIB_SRC += serial.c
        else
            QUANTUM_LIB_SRC += serial_$(strip $(SERIAL_DRIVER)).c
        endif
    endif
    COMMON_VPATH += $(QUANTUM_PATH)/split_common
endif

HAPTIC_ENABLE ?= no
ifneq ($(strip $(HAPTIC_ENABLE)),no)
    COMMON_VPATH += $(DRIVER_PATH)/haptic
    SRC += haptic.c
    OPT_DEFS += -DHAPTIC_ENABLE
endif

ifneq ($(filter DRV2605L, $(HAPTIC_ENABLE)), )
    SRC += DRV2605L.c
    QUANTUM_LIB_SRC += i2c_master.c
    OPT_DEFS += -DDRV2605L
endif

ifneq ($(filter SOLENOID, $(HAPTIC_ENABLE)), )
    SRC += solenoid.c
    OPT_DEFS += -DSOLENOID_ENABLE
endif

ifeq ($(strip $(HD44780_ENABLE)), yes)
    SRC += drivers/avr/hd44780.c
    OPT_DEFS += -DHD44780_ENABLE
endif

ifeq ($(strip $(OLED_DRIVER_ENABLE)), yes)
    OPT_DEFS += -DOLED_DRIVER_ENABLE
    COMMON_VPATH += $(DRIVER_PATH)/oled
    QUANTUM_LIB_SRC += i2c_master.c
    SRC += oled_driver.c
endif

include $(DRIVER_PATH)/qwiic/qwiic.mk

ifeq ($(strip $(UCIS_ENABLE)), yes)
    OPT_DEFS += -DUCIS_ENABLE
    UNICODE_COMMON := yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_ucis.c
endif

ifeq ($(strip $(UNICODEMAP_ENABLE)), yes)
    OPT_DEFS += -DUNICODEMAP_ENABLE
    UNICODE_COMMON := yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_unicodemap.c
endif

ifeq ($(strip $(UNICODE_ENABLE)), yes)
    OPT_DEFS += -DUNICODE_ENABLE
    UNICODE_COMMON := yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_unicode.c
endif

ifeq ($(strip $(UNICODE_COMMON)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_unicode_common.c
endif

SPACE_CADET_ENABLE ?= yes
ifeq ($(strip $(SPACE_CADET_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_space_cadet.c
    OPT_DEFS += -DSPACE_CADET_ENABLE
endif

MAGIC_ENABLE ?= yes
ifeq ($(strip $(MAGIC_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_magic.c
    OPT_DEFS += -DMAGIC_KEYCODE_ENABLE
endif

GRAVE_ESC_ENABLE ?= yes
ifeq ($(strip $(GRAVE_ESC_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_grave_esc.c
    OPT_DEFS += -DGRAVE_ESC_ENABLE
endif

ifeq ($(strip $(DYNAMIC_MACRO_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_dynamic_macro.c
    OPT_DEFS += -DDYNAMIC_MACRO_ENABLE
endif

ifeq ($(strip $(COMBO_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_combo.c
    OPT_DEFS += -DCOMBO_ENABLE
endif

ifeq ($(strip $(TAP_DANCE_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_tap_dance.c
    OPT_DEFS += -DTAP_DANCE_ENABLE
endif

ifeq ($(strip $(KEY_LOCK_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_key_lock.c
    OPT_DEFS += -DKEY_LOCK_ENABLE
endif

ifeq ($(strip $(LEADER_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_leader.c
    OPT_DEFS += -DLEADER_ENABLE
endif

ifeq ($(strip $(AUTO_SHIFT_ENABLE)), yes)
    SRC += $(QUANTUM_DIR)/process_keycode/process_auto_shift.c
    OPT_DEFS += -DAUTO_SHIFT_ENABLE
    ifeq ($(strip $(AUTO_SHIFT_MODIFIERS)), yes)
        OPT_DEFS += -DAUTO_SHIFT_MODIFIERS
    endif
endif

JOYSTICK_ENABLE ?= no
ifneq ($(strip $(JOYSTICK_ENABLE)), no)
    OPT_DEFS += -DJOYSTICK_ENABLE
    SRC += $(QUANTUM_DIR)/process_keycode/process_joystick.c
    SRC += $(QUANTUM_DIR)/joystick.c
endif

ifeq ($(strip $(JOYSTICK_ENABLE)), analog)
    OPT_DEFS += -DANALOG_JOYSTICK_ENABLE
    SRC += analog.c
endif

ifeq ($(strip $(JOYSTICK_ENABLE)), digital)
    OPT_DEFS += -DDIGITAL_JOYSTICK_ENABLE
endif

USBPD_ENABLE ?= no
VALID_USBPD_DRIVER_TYPES = custom vendor
USBPD_DRIVER ?= vendor
ifeq ($(strip $(USBPD_ENABLE)), yes)
    ifeq ($(filter $(strip $(USBPD_DRIVER)),$(VALID_USBPD_DRIVER_TYPES)),)
        $(error USBPD_DRIVER="$(USBPD_DRIVER)" is not a valid USBPD driver)
    else
        OPT_DEFS += -DUSBPD_ENABLE
        ifeq ($(strip $(USBPD_DRIVER)), vendor)
            # Vendor-specific implementations
            OPT_DEFS += -DUSBPD_VENDOR
            ifeq ($(strip $(MCU_SERIES)), STM32G4xx)
                OPT_DEFS += -DUSBPD_STM32G4
                SRC += usbpd_stm32g4.c
            else
                $(error There is no vendor-provided USBPD driver available)
            endif
        else ifeq ($(strip $(USBPD_DRIVER)), custom)
            OPT_DEFS += -DUSBPD_CUSTOM
            # Board designers can add their own driver to $(SRC)
        endif
    endif
endif