Add support for S7 Elephant (#4511)

* Add support for S7 Elephant

A high-end 70% custom keyboard designed and produced by jacky from Geekhack.

* Polish S7 Elephant code

Implement drashna's suggestions:

- specify bootloader
- remove unnecessary defines
- use led_set_user() for LED logic

* Correct info.json and s7_elephant.h

Correct info.json and s7_elepant.h to follow QMK convention and fix a
missing curly bracket.

3 files changed, 100 insertions, 0 deletions

diff --git a/keyboards/s7_elephant/keymaps/default/config.h b/keyboards/s7_elephant/keymaps/default/config.h
new file mode 100644
index 000000000..85f62371e
--- /dev/null
+++ b/keyboards/s7_elephant/keymaps/default/config.h
@@ -0,0 +1 @@
+#define RGBLIGHT_LIMIT_VAL 80
diff --git a/keyboards/s7_elephant/keymaps/default/keymap.c b/keyboards/s7_elephant/keymaps/default/keymap.c
new file mode 100644
index 000000000..339f2d379
--- /dev/null
+++ b/keyboards/s7_elephant/keymaps/default/keymap.c
@@ -0,0 +1,64 @@
+#include QMK_KEYBOARD_H
+
+enum custom_layers {
+    _QWERTY,
+    _FN
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Qwerty
+ * ,------.   ,-------------------------------------------------------------------------------------------------.
+ * |  F1  |   | Esc`~ |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  0  |  -  |  =  |   Bkspc   |Home |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |  F2  |   | Tab    |  Q  |  W  |  E  |  R  |  T  |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |    \     | End |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |  F3  |   | Caps    |  A  |  S  |  D  |  F  |  G  |  H  |  J  |  K  |  L  |  ;  |  '  |    Enter      | Ins |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |  F4  |   | Shift     |  Z  |  X  |  C  |  V  |  B  |  N  |  M  |  ,  |  .  |  /  |    RShift   |  U  | Del |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |  F5  |   | Ctrl |  Gui  |  Alt  |              Space                |   FN    |   RCtrl   |  L  | D  |  R  |
+ * `------'   `-------------------------------------------------------------------------------------------------'
+ */
+
+[_QWERTY] = LAYOUT_ansi(
+KC_F1, KC_GESC, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC, KC_INS,
+KC_F2, KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS, KC_DEL,
+KC_F3, KC_CAPS, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,      KC_ENT,      KC_HOME,
+KC_F4, KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, KC_UP,   KC_END,
+KC_F5, KC_LCTL, KC_LGUI, KC_LALT,                      KC_SPC,                          MO(_FN), KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
+),
+
+/* FN
+ * ,------.   ,-------------------------------------------------------------------------------------------------.
+ * |Reset |   |  F1   | F2  | F3  | F4  | F5  | F6  | F7  | F8  | F9  | F10 | F11 | F12 | PScr |  ScrLck  |Pause|
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |      |   |        |     |     |     |     |     |     |     |     |     |     |     |     |          |     |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |      |   |         |Prev |Play |Next |     |     |     |     |VolD |Mute |VolU |     |               |PgUp |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |      |   |           |     |     |     |     |     |     |     |     |     |     |             |     |PgDn |
+ * |------|   |-------------------------------------------------------------------------------------------------|
+ * |EEPRST|   |      |       |       |                                   |         |           |     |    |     |
+ * `------'   `-------------------------------------------------------------------------------------------------'
+ */
+
+[_FN] = LAYOUT_ansi(
+RESET,   KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_PSCR, KC_SLCK, KC_PAUS,
+_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+_______, _______, KC_MPRV, KC_MPLY, KC_MNXT, _______, _______, _______, _______, KC_VOLD, KC_MUTE, KC_VOLU, _______, _______,          KC_PGUP,
+_______, _______,          _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_PGDN,
+EEP_RST, _______, _______, _______,                        _______,                       _______, _______,          _______, _______, _______
+),
+};
+
+void led_set_user(uint8_t usb_led) {
+    // Turn LEDs On/Off for Caps Lock
+    if (host_keyboard_leds() & (1 << USB_LED_CAPS_LOCK)) {
+        rgblight_enable_noeeprom();
+        rgblight_sethsv_noeeprom(0, 0, 80);
+    } else {
+        rgblight_sethsv_noeeprom(0, 0, 80);
+        rgblight_disable_noeeprom();
+    }
+}
diff --git a/keyboards/s7_elephant/keymaps/default/readme.md b/keyboards/s7_elephant/keymaps/default/readme.md
new file mode 100644
index 000000000..c4fe30acd
--- /dev/null
+++ b/keyboards/s7_elephant/keymaps/default/readme.md
@@ -0,0 +1,35 @@
+# Default keymap for S7 Elephant
+
+**Features**
+
+* LEDs are functioning as Caps-Lock indicators
+
+## QWERTY (Normal) Layer
+```
+,------.   ,-------------------------------------------------------------------------------------------------.
+|  F1  |   | Esc`~ |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  0  |  -  |  =  |   Bkspc   |Home |
+|------|   |-------------------------------------------------------------------------------------------------|
+|  F2  |   | Tab    |  Q  |  W  |  E  |  R  |  T  |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |    \     | End |
+|------|   |-------------------------------------------------------------------------------------------------|
+|  F3  |   | Caps    |  A  |  S  |  D  |  F  |  G  |  H  |  J  |  K  |  L  |  ;  |  '  |    Enter      | Ins |
+|------|   |-------------------------------------------------------------------------------------------------|
+|  F4  |   | Shift     |  Z  |  X  |  C  |  V  |  B  |  N  |  M  |  ,  |  .  |  /  |    RShift   |  U  | Del |
+|------|   |-------------------------------------------------------------------------------------------------|
+|  F5  |   | Ctrl |  Gui  |  Alt  |              Space                | FN | RAlt  | RCtrl |  L  |  D  |  R  |
+`------'   `-------------------------------------------------------------------------------------------------'
+```
+
+## FN Layer
+```
+,------.   ,-------------------------------------------------------------------------------------------------.
+|Reset |   |  F1   | F2  | F3  | F4  | F5  | F6  | F7  | F8  | F9  | F10 | F11 | F12 | PScr |  ScrLck  |Pause|
+|------|   |-------------------------------------------------------------------------------------------------|
+|      |   |        |     |     |     |     |     |     |     |     |     |     |     |     |          |     |
+|------|   |-------------------------------------------------------------------------------------------------|
+|      |   |         |Prev |Play |Next |     |     |     |     |VolD |Mute |VolU |     |               |PgUp |
+|------|   |-------------------------------------------------------------------------------------------------|
+|      |   |           |     |     |     |     |     |     |     |     |     |     |             |     |PgDn |
+|------|   |-------------------------------------------------------------------------------------------------|
+|EPRM  |   |      |       |       |                                   |    |       |       |     |     |     |
+`------'   `-------------------------------------------------------------------------------------------------'
+```