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+/* Copyright 2019 Jason Williams (Wilba)
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include <tmk_core/common/eeconfig.h> // for EECONFIG_SIZE
+
+// Keyboard level code can change where VIA stores the magic.
+// The magic is the build date YYMMDD encoded as BCD in 3 bytes,
+// thus installing firmware built on a different date to the one
+// already installed can be detected and the EEPROM data is reset.
+// The only reason this is important is in case EEPROM usage changes
+// and the EEPROM was not explicitly reset by bootmagic lite.
+#ifndef VIA_EEPROM_MAGIC_ADDR
+# define VIA_EEPROM_MAGIC_ADDR (EECONFIG_SIZE)
+#endif
+
+#define VIA_EEPROM_LAYOUT_OPTIONS_ADDR (VIA_EEPROM_MAGIC_ADDR+3)
+
+// Changing the layout options size after release will invalidate EEPROM,
+// but this is something that should be set correctly on initial implementation.
+// 1 byte is enough for most uses (i.e. 8 binary states, or 6 binary + 1 ternary/quaternary )
+#ifndef VIA_EEPROM_LAYOUT_OPTIONS_SIZE
+# define VIA_EEPROM_LAYOUT_OPTIONS_SIZE 1
+#endif
+
+// The end of the EEPROM memory used by VIA
+// By default, dynamic keymaps will start at this if there is no
+// custom config
+#define VIA_EEPROM_CUSTOM_CONFIG_ADDR (VIA_EEPROM_LAYOUT_OPTIONS_ADDR+VIA_EEPROM_LAYOUT_OPTIONS_SIZE)
+
+#ifndef VIA_EEPROM_CUSTOM_CONFIG_SIZE
+# define VIA_EEPROM_CUSTOM_CONFIG_SIZE 0
+#endif
+
+// This is changed only when the command IDs change,
+// so VIA Configurator can detect compatible firmware.
+#define VIA_PROTOCOL_VERSION 0x0009
+
+enum via_command_id
+{
+ id_get_protocol_version = 0x01, // always 0x01
+ id_get_keyboard_value,
+ id_set_keyboard_value,
+ id_dynamic_keymap_get_keycode,
+ id_dynamic_keymap_set_keycode,
+ id_dynamic_keymap_reset,
+ id_backlight_config_set_value,
+ id_backlight_config_get_value,
+ id_backlight_config_save,
+ id_eeprom_reset,
+ id_bootloader_jump,
+ id_dynamic_keymap_macro_get_count,
+ id_dynamic_keymap_macro_get_buffer_size,
+ id_dynamic_keymap_macro_get_buffer,
+ id_dynamic_keymap_macro_set_buffer,
+ id_dynamic_keymap_macro_reset,
+ id_dynamic_keymap_get_layer_count,
+ id_dynamic_keymap_get_buffer,
+ id_dynamic_keymap_set_buffer,
+ id_unhandled = 0xFF,
+};
+
+enum via_keyboard_value_id
+{
+ id_uptime = 0x01,
+ id_layout_options,
+ id_switch_matrix_state
+};
+
+// Can't use SAFE_RANGE here, it might change if someone adds
+// new values to enum quantum_keycodes.
+// Need to keep checking 0x5F10 is still in the safe range.
+// TODO: merge this into quantum_keycodes
+// Backlight keycodes are in range 0x5F00-0x5F0F
+enum via_keycodes {
+ FN_MO13 = 0x5F10,
+ FN_MO23,
+ MACRO00,
+ MACRO01,
+ MACRO02,
+ MACRO03,
+ MACRO04,
+ MACRO05,
+ MACRO06,
+ MACRO07,
+ MACRO08,
+ MACRO09,
+ MACRO10,
+ MACRO11,
+ MACRO12,
+ MACRO13,
+ MACRO14,
+ MACRO15,
+};
+
+enum user_keycodes {
+ USER00 = 0x5F80,
+ USER01,
+ USER02,
+ USER03,
+ USER04,
+ USER05,
+ USER06,
+ USER07,
+ USER08,
+ USER09,
+ USER10,
+ USER11,
+ USER12,
+ USER13,
+ USER14,
+ USER15,
+};
+
+// Can be called in an overriding via_init_kb() to test if keyboard level code usage of
+// EEPROM is invalid and use/save defaults.
+bool via_eeprom_is_valid(void);
+
+// Sets VIA/keyboard level usage of EEPROM to valid/invalid
+// Keyboard level code (eg. via_init_kb()) should not call this
+void via_eeprom_set_valid(bool valid);
+
+// Flag QMK and VIA/keyboard level EEPROM as invalid.
+// Used in bootmagic_lite() and VIA command handler.
+// Keyboard level code should not need to call this.
+void via_eeprom_reset(void);
+
+// Called by QMK core to initialize dynamic keymaps etc.
+void via_init(void);
+
+// Used by VIA to store and retrieve the layout options.
+uint32_t via_get_layout_options(void);
+void via_set_layout_options(uint32_t value);
+
+// Called by QMK core to process VIA-specific keycodes.
+bool process_record_via(uint16_t keycode, keyrecord_t *record);
+