Allow for building layouts from keymap.json files.

build_layout.mk

@@ -3,8 +3,14 @@ LAYOUTS_REPOS := $(patsubst %/,%,$(sort $(dir $(wildcard $(LAYOUTS_PATH)/*/))))
 
 define SEARCH_LAYOUTS_REPO
     LAYOUT_KEYMAP_PATH := $$(LAYOUTS_REPO)/$$(LAYOUT)/$$(KEYMAP)
+    LAYOUT_KEYMAP_JSON := $$(LAYOUT_KEYMAP_PATH)/keymap.json
     LAYOUT_KEYMAP_C := $$(LAYOUT_KEYMAP_PATH)/keymap.c
-    ifneq ("$$(wildcard $$(LAYOUT_KEYMAP_C))","")
+    ifneq ("$$(wildcard $$(LAYOUT_KEYMAP_JSON))","")
+        -include $$(LAYOUT_KEYMAP_PATH)/rules.mk
+        KEYMAP_C := $(KEYBOARD_OUTPUT)/src/keymap.c
+        KEYMAP_JSON := $$(LAYOUT_KEYMAP_JSON)
+        KEYMAP_PATH := $$(LAYOUT_KEYMAP_PATH)
+    else ifneq ("$$(wildcard $$(LAYOUT_KEYMAP_C))","")
         -include $$(LAYOUT_KEYMAP_PATH)/rules.mk
         KEYMAP_C := $$(LAYOUT_KEYMAP_C)
         KEYMAP_PATH := $$(LAYOUT_KEYMAP_PATH)
@@ -24,4 +30,7 @@ ifneq ($(FORCE_LAYOUT),)
     endif
 endif
 
-$(foreach LAYOUT,$(LAYOUTS),$(eval $(call SEARCH_LAYOUTS)))
+$(foreach LAYOUT,$(LAYOUTS),$(eval $(call SEARCH_LAYOUTS)))
+
+# Use rule from build_json.mk, but update prerequisite in case KEYMAP_JSON was updated
+$(KEYBOARD_OUTPUT)/src/keymap.c: $(KEYMAP_JSON)

keyboards/jian/keymaps/via/keymap.c

@@ -0,0 +1,28 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT(
+  KC_LGUI, KC_GRV,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,      KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,         RGUI_T(KC_RBRC),
+           KC_LCTL, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,      KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, RCTL_T(KC_QUOT),
+           KC_LALT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,      KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, RALT_T(KC_BSLS),
+                LT(2, KC_TAB), LSFT_T(KC_SPC), LT(1, KC_ENT),      LT(1, KC_ESC), RSFT_T(KC_BSPC), LT(2, KC_DEL)
+),
+[1] = LAYOUT(
+  _______, KC_UNDS,         KC_F1,   KC_F2, KC_F3,   KC_F4,   KC_F5,        KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,          RGUI_T(KC_F12),
+           LCTL_T(KC_EQL),  KC_EXLM, KC_AT, KC_HASH, KC_DLR,  KC_PERC,      KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, RCTL_T(KC_MINS),
+           LALT_T(KC_PPLS), KC_1,    KC_2,  KC_3,    KC_4,    KC_5,         KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    _______,
+                                      LT(3, KC_TAB), _______, _______,      _______, _______, LT(3, KC_DEL)
+),
+[2] = LAYOUT(
+  _______, KC_NLCK,         KC_PSLS, KC_P7,   KC_P8,   KC_P9,   KC_PMNS,      KC_VOLU, KC_HOME, KC_PSCR, KC_PGUP, KC_SLCK, KC_CAPS,        _______,
+           LCTL_T(KC_EQL),  KC_PAST, KC_P4,   KC_P5,   KC_P6,   KC_PPLS,      KC_MUTE, KC_LEFT, KC_UP,   KC_RGHT, KC_INS,  RCTL_T(KC_APP),
+           _______,         KC_P0,   KC_P1,   KC_P2,   KC_P3,   KC_PCMM,      KC_VOLD, KC_END,  KC_DOWN, KC_PGDN, KC_PAUS, _______,
+                                        _______, _______, LT(3, KC_ENT),      LT(3, KC_ESC), _______, _______
+),
+[3] = LAYOUT_symmetric(
+  RESET,   DEBUG,   XXXXXXX, BL_INC,  RGB_VAI, RGB_HUD, RGB_HUI,
+           XXXXXXX, XXXXXXX, BL_DEC,  RGB_VAD, RGB_SAD, RGB_SAI,
+           XXXXXXX, BL_BRTG, BL_TOGG, RGB_TOG, RGB_RMOD,RGB_MOD,
+                                      _______, SH_TG,   _______
+)
+};

keyboards/jian/keymaps/via/rules.mk

@@ -0,0 +1,3 @@
+SWAP_HANDS_ENABLE = yes
+EXTRAKEY_ENABLE = yes    # Audio control and System control
+VIA_ENABLE = yes

keyboards/jian/nsrev2/config.h

@@ -41,6 +41,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Set 0 if debouncing isn't needed */
 #define DEBOUNCE 5
 
+#define QMK_ESC_OUTPUT D3
+#define QMK_ESC_INPUT B1
+
 #define PHYSICAL_LEDS_ENABLE
 
 #ifdef BACKLIGHT_ENABLE

keyboards/jian/rev2/config.h

@@ -47,6 +47,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Set 0 if debouncing isn't needed */
 #define DEBOUNCE 5
 
+#define QMK_ESC_OUTPUT D3
+#define QMK_ESC_INPUT B1
+
 #define PHYSICAL_LEDS_ENABLE
 #define IOS_DEVICE_ENABLE
 

keyboards/jian/rules.mk

@@ -1 +1,2 @@
 DEFAULT_FOLDER = jian/rev2
+LTO_ENABLE = yes