[modify] make sure F1-12 key scancode is consistent

Signed-off-by: Leo_Tsai <LeoCX_Tsai@compal.com>

Author: LeoCX-Tsai

board/hx20/keyboard_customization.c

@@ -235,6 +235,7 @@ void board_kblight_init(void)
 #define FN_PRESSED BIT(0)
 #define FN_LOCKED BIT(1)
 static uint8_t Fn_key;
+static uint8_t keep_fn_key_code;
 
 void fnkey_shutdown(void) {
 	uint8_t current_kb = 0;
@@ -263,13 +264,26 @@ void fnkey_startup(void) {
 }
 DECLARE_HOOK(HOOK_CHIPSET_STARTUP, fnkey_startup, HOOK_PRIO_DEFAULT);
 
+static void fn_keep_check(int8_t pressed)
+{
+	if (pressed)
+		keep_fn_key_code = 1;
+	else
+		keep_fn_key_code = 0;
+}
+
 int hotkey_F1_F12(uint16_t *key_code, uint16_t lock, int8_t pressed)
 {
 	const uint16_t prss_key = *key_code;
 
-	if (!(Fn_key & FN_LOCKED) && lock & FN_PRESSED)
+	if (!(Fn_key & FN_LOCKED) &&
+		(lock & FN_PRESSED) &&
+		!keep_fn_key_code)
 		return EC_SUCCESS;
-	else if (Fn_key & FN_LOCKED && !(Fn_key & FN_PRESSED))
+	else if (Fn_key & FN_LOCKED &&
+		!(lock & FN_PRESSED))
+		return EC_SUCCESS;
+	else if (!pressed && !keep_fn_key_code)
 		return EC_SUCCESS;
 
 	switch (prss_key) {
@@ -278,33 +292,26 @@ int hotkey_F1_F12(uint16_t *key_code, uint16_t lock, int8_t pressed)
 		break;
 	case SCANCODE_F2:  /* VOLUME_DOWN */
 		*key_code = SCANCODE_VOLUME_DOWN;
-
 		break;
 	case SCANCODE_F3:  /* VOLUME_UP */
 		*key_code = SCANCODE_VOLUME_UP;
-
 		break;
 	case SCANCODE_F4:  /* PREVIOUS_TRACK */
 		*key_code = SCANCODE_PREV_TRACK;
-
 		break;
 	case SCANCODE_F5:  /* PLAY_PAUSE */
 		*key_code = 0xe034;
-
 		break;
 	case SCANCODE_F6:  /* NEXT_TRACK */
 		*key_code = SCANCODE_NEXT_TRACK;
-
 		break;
 	case SCANCODE_F7:  /* TODO: DIM_SCREEN */
 		update_hid_key(HID_KEY_DISPLAY_BRIGHTNESS_DN, pressed);
 		return EC_ERROR_UNIMPLEMENTED;
-
 		break;
 	case SCANCODE_F8:  /* TODO: BRIGHTEN_SCREEN */
 		update_hid_key(HID_KEY_DISPLAY_BRIGHTNESS_UP, pressed);
 		return EC_ERROR_UNIMPLEMENTED;
-
 		break;
 	case SCANCODE_F9:  /* EXTERNAL_DISPLAY */
 		if (pressed) {
@@ -319,7 +326,6 @@ int hotkey_F1_F12(uint16_t *key_code, uint16_t lock, int8_t pressed)
 	case SCANCODE_F10:  /* FLIGHT_MODE */
 		update_hid_key(HID_KEY_AIRPLANE_MODE, pressed);
 		return EC_ERROR_UNIMPLEMENTED;
-
 		break;
 	case SCANCODE_F11:
 			/*
@@ -333,9 +339,11 @@ int hotkey_F1_F12(uint16_t *key_code, uint16_t lock, int8_t pressed)
 	case SCANCODE_F12:  /* TODO: FRAMEWORK */
 		/* Media Select scan code */
 		*key_code = 0xE050;
-
 		break;
+	default:
+		return EC_SUCCESS;
 	}
+	fn_keep_check(pressed);
 	return EC_SUCCESS;
 }