Move Glyph and BuiltinFont into fontio

It was confusing in displayio.

Fixes #1662

18 files changed, 199 insertions, 76 deletions

diff --git a/py/circuitpy_defns.mk b/py/circuitpy_defns.mk
index 09d0a93e2..7a369817a 100644
--- a/py/circuitpy_defns.mk
+++ b/py/circuitpy_defns.mk
@@ -124,7 +124,7 @@ ifeq ($(CIRCUITPY_DIGITALIO),1)
 SRC_PATTERNS += digitalio/%
 endif
 ifeq ($(CIRCUITPY_DISPLAYIO),1)
-SRC_PATTERNS += displayio/% terminalio/%
+SRC_PATTERNS += displayio/% terminalio/% fontio/%
 endif
 ifeq ($(CIRCUITPY_FREQUENCYIO),1)
 SRC_PATTERNS += frequencyio/%
@@ -268,7 +268,7 @@ $(filter $(SRC_PATTERNS), \
 	digitalio/Direction.c \
 	digitalio/DriveMode.c \
 	digitalio/Pull.c \
-	displayio/Glyph.c \
+	fontio/Glyph.c \
 	microcontroller/RunMode.c \
 	math/__init__.c \
 	supervisor/__init__.c \
@@ -304,7 +304,6 @@ $(filter $(SRC_PATTERNS), \
 	bitbangio/__init__.c \
 	busio/OneWire.c \
 	displayio/Bitmap.c \
-	displayio/BuiltinFont.c \
 	displayio/ColorConverter.c \
 	displayio/Display.c \
 	displayio/FourWire.c \
@@ -314,6 +313,8 @@ $(filter $(SRC_PATTERNS), \
 	displayio/Shape.c \
 	displayio/TileGrid.c \
 	displayio/__init__.c \
+	fontio/BuiltinFont.c \
+	fontio/__init__.c \
 	gamepad/GamePad.c \
 	gamepad/__init__.c \
 	os/__init__.c \
diff --git a/py/circuitpy_mpconfig.h b/py/circuitpy_mpconfig.h
index 00f3c7b3f..ba4e92aac 100644
--- a/py/circuitpy_mpconfig.h
+++ b/py/circuitpy_mpconfig.h
@@ -271,12 +271,15 @@ extern const struct _mp_obj_module_t digitalio_module;
 
 #if CIRCUITPY_DISPLAYIO
 extern const struct _mp_obj_module_t displayio_module;
+extern const struct _mp_obj_module_t fontio_module;
 extern const struct _mp_obj_module_t terminalio_module;
 #define DISPLAYIO_MODULE       { MP_OBJ_NEW_QSTR(MP_QSTR_displayio), (mp_obj_t)&displayio_module },
+#define FONTIO_MODULE       { MP_OBJ_NEW_QSTR(MP_QSTR_fontio), (mp_obj_t)&fontio_module },
 #define TERMINALIO_MODULE      { MP_OBJ_NEW_QSTR(MP_QSTR_terminalio), (mp_obj_t)&terminalio_module },
 #define CIRCUITPY_DISPLAY_LIMIT (3)
 #else
 #define DISPLAYIO_MODULE
+#define FONTIO_MODULE
 #define TERMINALIO_MODULE
 #define CIRCUITPY_DISPLAY_LIMIT (0)
 #endif
@@ -523,8 +526,9 @@ extern const struct _mp_obj_module_t pew_module;
     BOARD_MODULE \
     BUSIO_MODULE \
     DIGITALIO_MODULE \
-      TERMINALIO_MODULE \
     DISPLAYIO_MODULE \
+      FONTIO_MODULE \
+      TERMINALIO_MODULE \
     ERRNO_MODULE \
     FREQUENCYIO_MODULE \
     GAMEPAD_MODULE \
diff --git a/shared-bindings/displayio/__init__.c b/shared-bindings/displayio/__init__.c
index 177bd5fff..893bc6290 100644
--- a/shared-bindings/displayio/__init__.c
+++ b/shared-bindings/displayio/__init__.c
@@ -31,11 +31,9 @@
 
 #include "shared-bindings/displayio/__init__.h"
 #include "shared-bindings/displayio/Bitmap.h"
-#include "shared-bindings/displayio/BuiltinFont.h"
 #include "shared-bindings/displayio/ColorConverter.h"
 #include "shared-bindings/displayio/Display.h"
 #include "shared-bindings/displayio/FourWire.h"
-#include "shared-bindings/displayio/Glyph.h"
 #include "shared-bindings/displayio/Group.h"
 #include "shared-bindings/displayio/OnDiskBitmap.h"
 #include "shared-bindings/displayio/Palette.h"
@@ -91,10 +89,8 @@ MP_DEFINE_CONST_FUN_OBJ_0(displayio_release_displays_obj, displayio_release_disp
 STATIC const mp_rom_map_elem_t displayio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_displayio) },
     { MP_ROM_QSTR(MP_QSTR_Bitmap), MP_ROM_PTR(&displayio_bitmap_type) },
-    { MP_ROM_QSTR(MP_QSTR_BuiltinFont), MP_ROM_PTR(&displayio_builtinfont_type) },
     { MP_ROM_QSTR(MP_QSTR_ColorConverter), MP_ROM_PTR(&displayio_colorconverter_type) },
     { MP_ROM_QSTR(MP_QSTR_Display), MP_ROM_PTR(&displayio_display_type) },
-    { MP_ROM_QSTR(MP_QSTR_Glyph), MP_ROM_PTR(&displayio_glyph_type) },
     { MP_ROM_QSTR(MP_QSTR_Group), MP_ROM_PTR(&displayio_group_type) },
     { MP_ROM_QSTR(MP_QSTR_OnDiskBitmap), MP_ROM_PTR(&displayio_ondiskbitmap_type) },
     { MP_ROM_QSTR(MP_QSTR_Palette), MP_ROM_PTR(&displayio_palette_type) },
diff --git a/shared-bindings/displayio/BuiltinFont.c b/shared-bindings/fontio/BuiltinFont.c
index 55d38458e..74bc4d29e 100644
--- a/shared-bindings/displayio/BuiltinFont.c
+++ b/shared-bindings/fontio/BuiltinFont.c
@@ -24,7 +24,7 @@
  * THE SOFTWARE.
  */
 
-#include "shared-bindings/displayio/BuiltinFont.h"
+#include "shared-bindings/fontio/BuiltinFont.h"
 
 #include <stdint.h>
 
@@ -36,7 +36,7 @@
 #include "shared-bindings/util.h"
 #include "supervisor/shared/translate.h"
 
-//| .. currentmodule:: displayio
+//| .. currentmodule:: fontio
 //|
 //| :class:`BuiltinFont` -- A font built into CircuitPython
 //| =========================================================================================
@@ -56,15 +56,15 @@
 //|     `get_glyph` in most cases. This is useful for use with `displayio.TileGrid` and
 //|     `terminalio.Terminal`.
 //|
-STATIC mp_obj_t displayio_builtinfont_obj_get_bitmap(mp_obj_t self_in) {
-    displayio_builtinfont_t *self = MP_OBJ_TO_PTR(self_in);
-    return common_hal_displayio_builtinfont_get_bitmap(self);
+STATIC mp_obj_t fontio_builtinfont_obj_get_bitmap(mp_obj_t self_in) {
+    fontio_builtinfont_t *self = MP_OBJ_TO_PTR(self_in);
+    return common_hal_fontio_builtinfont_get_bitmap(self);
 }
-MP_DEFINE_CONST_FUN_OBJ_1(displayio_builtinfont_get_bitmap_obj, displayio_builtinfont_obj_get_bitmap);
+MP_DEFINE_CONST_FUN_OBJ_1(fontio_builtinfont_get_bitmap_obj, fontio_builtinfont_obj_get_bitmap);
 
-const mp_obj_property_t displayio_builtinfont_bitmap_obj = {
+const mp_obj_property_t fontio_builtinfont_bitmap_obj = {
     .base.type = &mp_type_property,
-    .proxy = {(mp_obj_t)&displayio_builtinfont_get_bitmap_obj,
+    .proxy = {(mp_obj_t)&fontio_builtinfont_get_bitmap_obj,
               (mp_obj_t)&mp_const_none_obj,
               (mp_obj_t)&mp_const_none_obj},
 };
@@ -73,38 +73,38 @@ const mp_obj_property_t displayio_builtinfont_bitmap_obj = {
 //|
 //|     Returns the maximum bounds of all glyphs in the font in a tuple of two values: width, height.
 //|
-STATIC mp_obj_t displayio_builtinfont_obj_get_bounding_box(mp_obj_t self_in) {
-    displayio_builtinfont_t *self = MP_OBJ_TO_PTR(self_in);
+STATIC mp_obj_t fontio_builtinfont_obj_get_bounding_box(mp_obj_t self_in) {
+    fontio_builtinfont_t *self = MP_OBJ_TO_PTR(self_in);
 
-    return common_hal_displayio_builtinfont_get_bounding_box(self);
+    return common_hal_fontio_builtinfont_get_bounding_box(self);
 }
-MP_DEFINE_CONST_FUN_OBJ_1(displayio_builtinfont_get_bounding_box_obj, displayio_builtinfont_obj_get_bounding_box);
+MP_DEFINE_CONST_FUN_OBJ_1(fontio_builtinfont_get_bounding_box_obj, fontio_builtinfont_obj_get_bounding_box);
 
 
 //|   .. method:: get_glyph(codepoint)
 //|
-//|     Returns a `displayio.Glyph` for the given codepoint or None if no glyph is available.
+//|     Returns a `fontio.Glyph` for the given codepoint or None if no glyph is available.
 //|
-STATIC mp_obj_t displayio_builtinfont_obj_get_glyph(mp_obj_t self_in, mp_obj_t codepoint_obj) {
-    displayio_builtinfont_t *self = MP_OBJ_TO_PTR(self_in);
+STATIC mp_obj_t fontio_builtinfont_obj_get_glyph(mp_obj_t self_in, mp_obj_t codepoint_obj) {
+    fontio_builtinfont_t *self = MP_OBJ_TO_PTR(self_in);
 
     mp_int_t codepoint;
     if (!mp_obj_get_int_maybe(codepoint_obj, &codepoint)) {
         mp_raise_ValueError_varg(translate("%q should be an int"), MP_QSTR_codepoint);
     }
-    return common_hal_displayio_builtinfont_get_glyph(self, codepoint);
+    return common_hal_fontio_builtinfont_get_glyph(self, codepoint);
 }
-MP_DEFINE_CONST_FUN_OBJ_2(displayio_builtinfont_get_glyph_obj, displayio_builtinfont_obj_get_glyph);
+MP_DEFINE_CONST_FUN_OBJ_2(fontio_builtinfont_get_glyph_obj, fontio_builtinfont_obj_get_glyph);
 
-STATIC const mp_rom_map_elem_t displayio_builtinfont_locals_dict_table[] = {
-    { MP_ROM_QSTR(MP_QSTR_bitmap), MP_ROM_PTR(&displayio_builtinfont_bitmap_obj) },
-    { MP_ROM_QSTR(MP_QSTR_get_bounding_box), MP_ROM_PTR(&displayio_builtinfont_get_bounding_box_obj) },
-    { MP_ROM_QSTR(MP_QSTR_get_glyph), MP_ROM_PTR(&displayio_builtinfont_get_glyph_obj) },
+STATIC const mp_rom_map_elem_t fontio_builtinfont_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_bitmap), MP_ROM_PTR(&fontio_builtinfont_bitmap_obj) },
+    { MP_ROM_QSTR(MP_QSTR_get_bounding_box), MP_ROM_PTR(&fontio_builtinfont_get_bounding_box_obj) },
+    { MP_ROM_QSTR(MP_QSTR_get_glyph), MP_ROM_PTR(&fontio_builtinfont_get_glyph_obj) },
 };
-STATIC MP_DEFINE_CONST_DICT(displayio_builtinfont_locals_dict, displayio_builtinfont_locals_dict_table);
+STATIC MP_DEFINE_CONST_DICT(fontio_builtinfont_locals_dict, fontio_builtinfont_locals_dict_table);
 
-const mp_obj_type_t displayio_builtinfont_type = {
+const mp_obj_type_t fontio_builtinfont_type = {
     { &mp_type_type },
     .name = MP_QSTR_BuiltinFont,
-    .locals_dict = (mp_obj_dict_t*)&displayio_builtinfont_locals_dict,
+    .locals_dict = (mp_obj_dict_t*)&fontio_builtinfont_locals_dict,
 };
diff --git a/shared-bindings/displayio/BuiltinFont.h b/shared-bindings/fontio/BuiltinFont.h
index 766013158..e87445e6b 100644
--- a/shared-bindings/displayio/BuiltinFont.h
+++ b/shared-bindings/fontio/BuiltinFont.h
@@ -24,15 +24,15 @@
  * THE SOFTWARE.
  */
 
-#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_BUILTINFONT_H
-#define MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_BUILTINFONT_H
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO_BUILTINFONT_H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO_BUILTINFONT_H
 
-#include "shared-module/displayio/BuiltinFont.h"
+#include "shared-module/fontio/BuiltinFont.h"
 
-extern const mp_obj_type_t displayio_builtinfont_type;
+extern const mp_obj_type_t fontio_builtinfont_type;
 
-mp_obj_t common_hal_displayio_builtinfont_get_bitmap(const displayio_builtinfont_t *self);
-mp_obj_t common_hal_displayio_builtinfont_get_bounding_box(const displayio_builtinfont_t *self);
-mp_obj_t common_hal_displayio_builtinfont_get_glyph(const displayio_builtinfont_t *self, mp_uint_t codepoint);
+mp_obj_t common_hal_fontio_builtinfont_get_bitmap(const fontio_builtinfont_t *self);
+mp_obj_t common_hal_fontio_builtinfont_get_bounding_box(const fontio_builtinfont_t *self);
+mp_obj_t common_hal_fontio_builtinfont_get_glyph(const fontio_builtinfont_t *self, mp_uint_t codepoint);
 
-#endif // MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_BUILTINFONT_H
+#endif // MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO_BUILTINFONT_H
diff --git a/shared-bindings/displayio/Glyph.c b/shared-bindings/fontio/Glyph.c
index 1a4a75522..80298fd16 100644
--- a/shared-bindings/displayio/Glyph.c
+++ b/shared-bindings/fontio/Glyph.c
@@ -24,11 +24,11 @@
  * THE SOFTWARE.
  */
 
-#include "shared-bindings/displayio/Glyph.h"
+#include "shared-bindings/fontio/Glyph.h"
 
 #include <stdint.h>
 
-//| .. currentmodule:: displayio
+//| .. currentmodule:: fontio
 //|
 //| :class:`Glyph` -- Storage of glyph info
 //| ==========================================================================
@@ -37,7 +37,7 @@
 //|
 //|   Named tuple used to capture a single glyph and its attributes.
 //|
-//|   :param displayio.Bitmap bitmap: the bitmap including the glyph
+//|   :param fontio.Bitmap bitmap: the bitmap including the glyph
 //|   :param int tile_index: the tile index within the bitmap
 //|   :param int width: the width of the glyph's bitmap
 //|   :param int height: the height of the glyph's bitmap
@@ -46,7 +46,7 @@
 //|   :param int shift_x: the x difference to the next glyph
 //|   :param int shift_y: the y difference to the next glyph
 //|
-const mp_obj_namedtuple_type_t displayio_glyph_type = {
+const mp_obj_namedtuple_type_t fontio_glyph_type = {
     .base = {
         .base = {
             .type = &mp_type_type
diff --git a/shared-bindings/displayio/Glyph.h b/shared-bindings/fontio/Glyph.h
index d26a4b9e4..c58d812dd 100644
--- a/shared-bindings/displayio/Glyph.h
+++ b/shared-bindings/fontio/Glyph.h
@@ -24,11 +24,11 @@
  * THE SOFTWARE.
  */
 
-#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_GLYPH_H
-#define MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_GLYPH_H
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO_GLYPH_H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO_GLYPH_H
 
 #include "py/objnamedtuple.h"
 
-extern const mp_obj_namedtuple_type_t displayio_glyph_type;
+extern const mp_obj_namedtuple_type_t fontio_glyph_type;
 
-#endif // MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_GLYPH_H
+#endif // MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO_GLYPH_H
diff --git a/shared-bindings/fontio/__init__.c b/shared-bindings/fontio/__init__.c
new file mode 100644
index 000000000..cd0f5ab0f
--- /dev/null
+++ b/shared-bindings/fontio/__init__.c
@@ -0,0 +1,65 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+
+#include "py/obj.h"
+#include "py/runtime.h"
+
+#include "shared-bindings/fontio/__init__.h"
+#include "shared-bindings/fontio/BuiltinFont.h"
+#include "shared-bindings/fontio/Glyph.h"
+
+//| :mod:`fontio` --- Core font related data structures
+//| =========================================================================
+//|
+//| .. module:: fontio
+//|   :synopsis: Core font related data structures
+//|   :platform: SAMD21, SAMD51, nRF52
+//|
+//| The `fontio` module contains classes to store font related information.
+//|
+//| Libraries
+//|
+//| .. toctree::
+//|     :maxdepth: 3
+//|
+//|     BuiltinFont
+//|     Glyph
+//|
+
+STATIC const mp_rom_map_elem_t fontio_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_fontio) },
+    { MP_ROM_QSTR(MP_QSTR_BuiltinFont), MP_ROM_PTR(&fontio_builtinfont_type) },
+    { MP_ROM_QSTR(MP_QSTR_Glyph), MP_ROM_PTR(&fontio_glyph_type) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(fontio_module_globals, fontio_module_globals_table);
+
+const mp_obj_module_t fontio_module = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t*)&fontio_module_globals,
+};
diff --git a/shared-bindings/fontio/__init__.h b/shared-bindings/fontio/__init__.h
new file mode 100644
index 000000000..209919777
--- /dev/null
+++ b/shared-bindings/fontio/__init__.h
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO___INIT___H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO___INIT___H
+
+
+#endif  // MICROPY_INCLUDED_SHARED_BINDINGS_FONTIO___INIT___H
diff --git a/shared-bindings/terminalio/Terminal.c b/shared-bindings/terminalio/Terminal.c
index e3822d858..f0dc150c0 100644
--- a/shared-bindings/terminalio/Terminal.c
+++ b/shared-bindings/terminalio/Terminal.c
@@ -34,7 +34,7 @@
 #include "py/objstr.h"
 #include "py/runtime.h"
 #include "py/stream.h"
-#include "shared-bindings/displayio/BuiltinFont.h"
+#include "shared-bindings/fontio/BuiltinFont.h"
 #include "supervisor/shared/translate.h"
 
 
@@ -64,8 +64,8 @@ STATIC mp_obj_t terminalio_terminal_make_new(const mp_obj_type_t *type, size_t n
     }
 
     mp_obj_t font = args[ARG_font].u_obj;
-    if (!MP_OBJ_IS_TYPE(font, &displayio_builtinfont_type)) {
-        mp_raise_TypeError_varg(translate("Expected a %q"), displayio_builtinfont_type.name);
+    if (!MP_OBJ_IS_TYPE(font, &fontio_builtinfont_type)) {
+        mp_raise_TypeError_varg(translate("Expected a %q"), fontio_builtinfont_type.name);
     }
     terminalio_terminal_obj_t *self = m_new_obj(terminalio_terminal_obj_t);
     self->base.type = &terminalio_terminal_type;
diff --git a/shared-bindings/terminalio/Terminal.h b/shared-bindings/terminalio/Terminal.h
index a5dadac89..7ae0bf1b0 100644
--- a/shared-bindings/terminalio/Terminal.h
+++ b/shared-bindings/terminalio/Terminal.h
@@ -34,7 +34,7 @@
 extern const mp_obj_type_t terminalio_terminal_type;
 
 extern void common_hal_terminalio_terminal_construct(terminalio_terminal_obj_t *self,
-    displayio_tilegrid_t* tilegrid, const displayio_builtinfont_t* font);
+    displayio_tilegrid_t* tilegrid, const fontio_builtinfont_t* font);
 
 // Write characters. len is in characters NOT bytes!
 extern size_t common_hal_terminalio_terminal_write(terminalio_terminal_obj_t *self,
diff --git a/shared-module/displayio/BuiltinFont.c b/shared-module/fontio/BuiltinFont.c
index ee69b423c..58820d524 100644
--- a/shared-module/displayio/BuiltinFont.c
+++ b/shared-module/fontio/BuiltinFont.c
@@ -24,25 +24,25 @@
  * THE SOFTWARE.
  */
 
-#include "shared-bindings/displayio/BuiltinFont.h"
+#include "shared-bindings/fontio/BuiltinFont.h"
 
 
-#include "shared-bindings/displayio/Glyph.h"
+#include "shared-bindings/fontio/Glyph.h"
 
 #include "py/objnamedtuple.h"
 
-mp_obj_t common_hal_displayio_builtinfont_get_bitmap(const displayio_builtinfont_t *self) {
+mp_obj_t common_hal_fontio_builtinfont_get_bitmap(const fontio_builtinfont_t *self) {
     return MP_OBJ_FROM_PTR(self->bitmap);
 }
 
-mp_obj_t common_hal_displayio_builtinfont_get_bounding_box(const displayio_builtinfont_t *self) {
+mp_obj_t common_hal_fontio_builtinfont_get_bounding_box(const fontio_builtinfont_t *self) {
     mp_obj_t *items = m_new(mp_obj_t, 2);
     items[0] = MP_OBJ_NEW_SMALL_INT(self->width);
     items[1] = MP_OBJ_NEW_SMALL_INT(self->height);
     return mp_obj_new_tuple(2, items);
 }
 
-uint8_t displayio_builtinfont_get_glyph_index(const displayio_builtinfont_t *self, mp_uint_t codepoint) {
+uint8_t fontio_builtinfont_get_glyph_index(const fontio_builtinfont_t *self, mp_uint_t codepoint) {
     if (codepoint >= 0x20 && codepoint <= 0x7e) {
         return codepoint - 0x20;
     }
@@ -60,8 +60,8 @@ uint8_t displayio_builtinfont_get_glyph_index(const displayio_builtinfont_t *sel
     return 0xff;
 }
 
-mp_obj_t common_hal_displayio_builtinfont_get_glyph(const displayio_builtinfont_t *self, mp_uint_t codepoint) {
-    uint8_t glyph_index = displayio_builtinfont_get_glyph_index(self, codepoint);
+mp_obj_t common_hal_fontio_builtinfont_get_glyph(const fontio_builtinfont_t *self, mp_uint_t codepoint) {
+    uint8_t glyph_index = fontio_builtinfont_get_glyph_index(self, codepoint);
     if (glyph_index == 0xff) {
         return mp_const_none;
     }
@@ -75,5 +75,5 @@ mp_obj_t common_hal_displayio_builtinfont_get_glyph(const displayio_builtinfont_
         MP_OBJ_NEW_SMALL_INT(self->width),
         MP_OBJ_NEW_SMALL_INT(0)
     };
-    return namedtuple_make_new((const mp_obj_type_t*) &displayio_glyph_type, 8, field_values, NULL);
+    return namedtuple_make_new((const mp_obj_type_t*) &fontio_glyph_type, 8, field_values, NULL);
 }
diff --git a/shared-module/displayio/BuiltinFont.h b/shared-module/fontio/BuiltinFont.h
index ac69ef9da..30b4ade8c 100644
--- a/shared-module/displayio/BuiltinFont.h
+++ b/shared-module/fontio/BuiltinFont.h
@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_BUILTINFONT_H
-#define MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_BUILTINFONT_H
+#ifndef MICROPY_INCLUDED_SHARED_MODULE_FONTIO_BUILTINFONT_H
+#define MICROPY_INCLUDED_SHARED_MODULE_FONTIO_BUILTINFONT_H
 
 #include <stdbool.h>
 #include <stdint.h>
@@ -40,8 +40,8 @@ typedef struct {
     uint8_t height;
     const byte* unicode_characters;
     uint16_t unicode_characters_len;
-} displayio_builtinfont_t;
+} fontio_builtinfont_t;
 
-uint8_t displayio_builtinfont_get_glyph_index(const displayio_builtinfont_t *self, mp_uint_t codepoint);
+uint8_t fontio_builtinfont_get_glyph_index(const fontio_builtinfont_t *self, mp_uint_t codepoint);
 
-#endif // MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_BUILTINFONT_H
+#endif // MICROPY_INCLUDED_SHARED_MODULE_FONTIO_BUILTINFONT_H
diff --git a/shared-module/fontio/__init__.c b/shared-module/fontio/__init__.c
new file mode 100644
index 000000000..674343c53
--- /dev/null
+++ b/shared-module/fontio/__init__.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Scott Shawcroft
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// Nothing now.
diff --git a/shared-module/terminalio/Terminal.c b/shared-module/terminalio/Terminal.c
index 07c13d639..7adf9d032 100644
--- a/shared-module/terminalio/Terminal.c
+++ b/shared-module/terminalio/Terminal.c
@@ -26,11 +26,10 @@
 
 #include "shared-module/terminalio/Terminal.h"
 
-#include "shared-module/displayio/__init__.h"
-#include "shared-module/displayio/BuiltinFont.h"
+#include "shared-module/fontio/BuiltinFont.h"
 #include "shared-bindings/displayio/TileGrid.h"
 
-void common_hal_terminalio_terminal_construct(terminalio_terminal_obj_t *self, displayio_tilegrid_t* tilegrid, const displayio_builtinfont_t* font) {
+void common_hal_terminalio_terminal_construct(terminalio_terminal_obj_t *self, displayio_tilegrid_t* tilegrid, const fontio_builtinfont_t* font) {
     self->cursor_x = 0;
     self->cursor_y = 0;
     self->font = font;
@@ -47,7 +46,7 @@ size_t common_hal_terminalio_terminal_write(terminalio_terminal_obj_t *self, con
         // Always handle ASCII.
         if (c < 128) {
             if (c >= 0x20 && c <= 0x7e) {
-                uint8_t tile_index = displayio_builtinfont_get_glyph_index(self->font, c);
+                uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
                 common_hal_displayio_tilegrid_set_tile(self->tilegrid, self->cursor_x, self->cursor_y, tile_index);
                 self->cursor_x++;
             } else if (c == '\r') {
@@ -92,7 +91,7 @@ size_t common_hal_terminalio_terminal_write(terminalio_terminal_obj_t *self, con
                 }
             }
         } else {
-            uint8_t tile_index = displayio_builtinfont_get_glyph_index(self->font, c);
+            uint8_t tile_index = fontio_builtinfont_get_glyph_index(self->font, c);
             if (tile_index != 0xff) {
                 common_hal_displayio_tilegrid_set_tile(self->tilegrid, self->cursor_x, self->cursor_y, tile_index);
                 self->cursor_x++;
diff --git a/shared-module/terminalio/Terminal.h b/shared-module/terminalio/Terminal.h
index 145b42f3f..c31392cc4 100644
--- a/shared-module/terminalio/Terminal.h
+++ b/shared-module/terminalio/Terminal.h
@@ -31,12 +31,12 @@
 #include <stdbool.h>
 
 #include "py/obj.h"
-#include "shared-module/displayio/BuiltinFont.h"
+#include "shared-module/fontio/BuiltinFont.h"
 #include "shared-module/displayio/TileGrid.h"
 
 typedef struct  {
     mp_obj_base_t base;
-    const displayio_builtinfont_t* font;
+    const fontio_builtinfont_t* font;
     uint16_t cursor_x;
     uint16_t cursor_y;
     displayio_tilegrid_t* tilegrid;
diff --git a/supervisor/shared/display.h b/supervisor/shared/display.h
index cb321e85e..d5faa7777 100644
--- a/supervisor/shared/display.h
+++ b/supervisor/shared/display.h
@@ -27,9 +27,9 @@
 #ifndef MICROPY_INCLUDED_SUPERVISOR_SHARED_DISPLAY_H
 #define MICROPY_INCLUDED_SUPERVISOR_SHARED_DISPLAY_H
 
-#include "shared-bindings/displayio/BuiltinFont.h"
 #include "shared-bindings/displayio/Bitmap.h"
 #include "shared-bindings/displayio/TileGrid.h"
+#include "shared-bindings/fontio/BuiltinFont.h"
 #include "shared-bindings/terminalio/Terminal.h"
 
 // These are autogenerated resources.
@@ -37,7 +37,7 @@
 // This is fixed so it doesn't need to be in RAM.
 extern const displayio_bitmap_t supervisor_terminal_font_bitmap;
 
-extern const displayio_builtinfont_t supervisor_terminal_font;
+extern const fontio_builtinfont_t supervisor_terminal_font;
 
 // These will change so they must live in RAM.
 extern displayio_tilegrid_t supervisor_terminal_text_grid;
diff --git a/tools/gen_display_resources.py b/tools/gen_display_resources.py
index 22f19d84e..82676ef07 100644
--- a/tools/gen_display_resources.py
+++ b/tools/gen_display_resources.py
@@ -165,8 +165,8 @@ const displayio_bitmap_t supervisor_terminal_font_bitmap = {{
 
 
 c_file.write("""\
-const displayio_builtinfont_t supervisor_terminal_font = {{
-    .base = {{.type = &displayio_builtinfont_type }},
+const fontio_builtinfont_t supervisor_terminal_font = {{
+    .base = {{.type = &fontio_builtinfont_type }},
     .bitmap = &supervisor_terminal_font_bitmap,
     .width = {},
     .height = {},