add VIA keymap for boardsource/3x4 (#10043)

* via keymap for boardsource/3x4

* fix formatting

* Apply suggestions from code review

fix rules.mk

* Update keyboards/boardsource/3x4/rules.mk

* use unique product ID

* update vendor id to be unique, update product id to make more sense

5 files changed, 35 insertions, 7 deletions

diff --git a/keyboards/boardsource/3x4/config.h b/keyboards/boardsource/3x4/config.h
index 95c6f9ac2..93ce004ef 100644
--- a/keyboards/boardsource/3x4/config.h
+++ b/keyboards/boardsource/3x4/config.h
@@ -5,8 +5,8 @@
 #include "config_common.h"
 
 /* USB Device descriptor parameter */
-#define VENDOR_ID       0xF7E0
-#define PRODUCT_ID      0x0412
+#define VENDOR_ID       0x4273 // "Bs" - Boardsource
+#define PRODUCT_ID      0x0304 // 3x4
 #define DEVICE_VER      0x0000
 #define MANUFACTURER    Boardsource
 #define PRODUCT         3x4
diff --git a/keyboards/boardsource/3x4/keymaps/via/keymap.c b/keyboards/boardsource/3x4/keymaps/via/keymap.c
new file mode 100644
index 000000000..a4824f8bf
--- /dev/null
+++ b/keyboards/boardsource/3x4/keymaps/via/keymap.c
@@ -0,0 +1,25 @@
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    LAYOUT(
+        KC_0,  KC_1,    KC_4,    KC_7, 
+        KC_ENT,  KC_2,    KC_5,    KC_8, 
+        MO(1),  KC_3,    KC_6,    KC_9
+    ),
+    LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, RESET
+    ),
+    LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    ),
+    LAYOUT(
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+    )
+};
diff --git a/keyboards/boardsource/3x4/keymaps/via/readme.md b/keyboards/boardsource/3x4/keymaps/via/readme.md
new file mode 100644
index 000000000..c68eb9cf5
--- /dev/null
+++ b/keyboards/boardsource/3x4/keymaps/via/readme.md
@@ -0,0 +1,5 @@
+# The via keymap for boardsource 3x4 macropad
+
+This folder contains the [VIA](https://caniusevia.com/) configuration for the boardsource 3x4 macropad
+
+Maintained by: [gwillad](https://github.com/gwillad)
diff --git a/keyboards/boardsource/3x4/keymaps/via/rules.mk b/keyboards/boardsource/3x4/keymaps/via/rules.mk
new file mode 100644
index 000000000..036bd6d1c
--- /dev/null
+++ b/keyboards/boardsource/3x4/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/boardsource/3x4/rules.mk b/keyboards/boardsource/3x4/rules.mk
index 263c58604..9c9acfda2 100644
--- a/keyboards/boardsource/3x4/rules.mk
+++ b/keyboards/boardsource/3x4/rules.mk
@@ -24,8 +24,5 @@ SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
 # if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 NKRO_ENABLE = no            # USB Nkey Rollover
 BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-MIDI_ENABLE = no            # MIDI support
-UNICODE_ENABLE = no         # Unicode
-BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
-AUDIO_ENABLE = no           # Audio output on port C6
-FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+BLUETOOTH_ENABLE = no       # Enable Bluetooth
+AUDIO_ENABLE = no           # Audio output