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diff --git a/circuitpython/shared-module/displayio/Display.h b/circuitpython/shared-module/displayio/Display.h
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+/*
+ * 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.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_DISPLAY_H
+#define MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_DISPLAY_H
+
+#include "shared-bindings/digitalio/DigitalInOut.h"
+#include "shared-bindings/displayio/Group.h"
+#if CIRCUITPY_PWMIO
+#include "shared-bindings/pwmio/PWMOut.h"
+#endif
+
+#include "shared-module/displayio/area.h"
+#include "shared-module/displayio/display_core.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    displayio_display_core_t core;
+    union {
+        digitalio_digitalinout_obj_t backlight_inout;
+        #if CIRCUITPY_PWMIO
+        pwmio_pwmout_obj_t backlight_pwm;
+        #endif
+    };
+    uint64_t last_backlight_refresh;
+    uint64_t last_refresh_call;
+    mp_float_t current_brightness;
+    uint16_t brightness_command;
+    uint16_t native_frames_per_second;
+    uint16_t native_ms_per_frame;
+    uint8_t set_column_command;
+    uint8_t set_row_command;
+    uint8_t write_ram_command;
+    bool auto_refresh;
+    bool first_manual_refresh;
+    bool data_as_commands;
+    bool auto_brightness;
+    bool updating_backlight;
+    bool backlight_on_high;
+    // new quirk for sh1107
+    bool SH1107_addressing;
+} displayio_display_obj_t;
+
+void displayio_display_background(displayio_display_obj_t *self);
+void release_display(displayio_display_obj_t *self);
+void reset_display(displayio_display_obj_t *self);
+
+void displayio_display_collect_ptrs(displayio_display_obj_t *self);
+
+#endif // MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_DISPLAY_H