fwk: add fn key mappings for JIS IME keys

fn+C is mapped to Muhenkan,
fn+M is mapped to Henkan,
and fn+, is mapped to Katakana/Hiragana.

Signed-off-by: Jules Bertholet <julesbertholet@quoi.xyz>

Author: Jules-Bertholet

board/hx20/keyboard_customization.c

@@ -392,6 +392,18 @@ int hotkey_special_key(uint16_t *key_code, int8_t pressed)
 		if (fn_table_set(pressed, KB_FN_Z))
 			*key_code = 0x0061;
 		break;
+	case 0x0021:  /* C -> MUHENKAN */
+		if (fn_table_set(pressed, KB_FN_C))
+			*key_code = 0x0067;
+		break;
+	case 0x003A:  /* M -> HENKAN */
+		if (fn_table_set(pressed, KB_FN_M))
+			*key_code = 0x0064;
+		break;
+	case 0x0041:  /* , -> KATAKANA HIRAGANA */
+		if (fn_table_set(pressed, KB_FN_COMMA))
+			*key_code = 0x0013;
+		break;
 	case 0x004A:  /* ? -> RO KANA */
 		if (fn_table_set(pressed, KB_FN_QUESTIONMARK))
 			*key_code = 0x0051;

board/hx20/keyboard_customization.h

@@ -99,6 +99,9 @@ enum kb_fn_table {
 	KB_FN_Z = BIT(25),
 	KB_FN_QUESTIONMARK = BIT(26),
 	KB_FN_EQUALS = BIT(27),
+	KB_FN_C = BIT(28),
+	KB_FN_M = BIT(29),
+	KB_FN_COMMA = BIT(30),
 };
 
 #ifdef CONFIG_KEYBOARD_BACKLIGHT

board/hx30/keyboard_customization.c

@@ -392,6 +392,18 @@ int hotkey_special_key(uint16_t *key_code, int8_t pressed)
 		if (fn_table_set(pressed, KB_FN_Z))
 			*key_code = 0x0061;
 		break;
+	case 0x0021:  /* C -> MUHENKAN */
+		if (fn_table_set(pressed, KB_FN_C))
+			*key_code = 0x0067;
+		break;
+	case 0x003A:  /* M -> HENKAN */
+		if (fn_table_set(pressed, KB_FN_M))
+			*key_code = 0x0064;
+		break;
+	case 0x0041:  /* , -> KATAKANA HIRAGANA */
+		if (fn_table_set(pressed, KB_FN_COMMA))
+			*key_code = 0x0013;
+		break;
 	case 0x004A:  /* ? -> RO KANA */
 		if (fn_table_set(pressed, KB_FN_QUESTIONMARK))
 			*key_code = 0x0051;

board/hx30/keyboard_customization.h

@@ -99,6 +99,9 @@ enum kb_fn_table {
 	KB_FN_Z = BIT(25),
 	KB_FN_QUESTIONMARK = BIT(26),
 	KB_FN_EQUALS = BIT(27),
+	KB_FN_C = BIT(28),
+	KB_FN_M = BIT(29),
+	KB_FN_COMMA = BIT(30),
 };
 
 #ifdef CONFIG_KEYBOARD_BACKLIGHT