399 lines
17 KiB
C
399 lines
17 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include "shared-module/displayio/__init__.h"
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#include "shared/runtime/interrupt_char.h"
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#include "py/runtime.h"
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#include "shared-bindings/board/__init__.h"
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#include "shared-bindings/displayio/Bitmap.h"
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#include "shared-bindings/displayio/Display.h"
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#include "shared-bindings/displayio/Group.h"
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#include "shared-bindings/displayio/Palette.h"
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#include "shared-module/displayio/area.h"
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#include "supervisor/shared/display.h"
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#include "supervisor/shared/reload.h"
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#include "supervisor/memory.h"
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#include "supervisor/spi_flash_api.h"
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#include "py/mpconfig.h"
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#if CIRCUITPY_DOTCLOCKFRAMEBUFFER
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#include "shared-bindings/dotclockframebuffer/DotClockFramebuffer.h"
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#endif
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#if CIRCUITPY_SHARPDISPLAY
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#include "shared-bindings/sharpdisplay/SharpMemoryFramebuffer.h"
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#include "shared-module/sharpdisplay/SharpMemoryFramebuffer.h"
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#endif
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primary_display_bus_t display_buses[CIRCUITPY_DISPLAY_LIMIT];
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primary_display_t displays[CIRCUITPY_DISPLAY_LIMIT];
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displayio_buffer_transform_t null_transform = {
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.x = 0,
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.y = 0,
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.dx = 1,
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.dy = 1,
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.scale = 1,
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.width = 0,
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.height = 0,
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.mirror_x = false,
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.mirror_y = false,
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.transpose_xy = false
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};
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#if CIRCUITPY_RGBMATRIX || CIRCUITPY_IS31FL3741 || CIRCUITPY_VIDEOCORE
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STATIC bool any_display_uses_this_framebuffer(mp_obj_base_t *obj) {
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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if (displays[i].display_base.type == &framebufferio_framebufferdisplay_type) {
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framebufferio_framebufferdisplay_obj_t *display = &displays[i].framebuffer_display;
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if (display->framebuffer == obj) {
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return true;
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}
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}
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}
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return false;
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}
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#endif
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void displayio_background(void) {
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if (mp_hal_is_interrupted()) {
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return;
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}
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if (autoreload_ready()) {
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// Reload is about to happen, so don't redisplay.
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return;
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}
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_type = displays[i].display.base.type;
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if (display_type == NULL || display_type == &mp_type_NoneType) {
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// Skip null display.
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continue;
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}
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if (display_type == &displayio_display_type) {
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displayio_display_background(&displays[i].display);
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#if CIRCUITPY_FRAMEBUFFERIO
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} else if (display_type == &framebufferio_framebufferdisplay_type) {
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framebufferio_framebufferdisplay_background(&displays[i].framebuffer_display);
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#endif
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} else if (display_type == &displayio_epaperdisplay_type) {
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displayio_epaperdisplay_background(&displays[i].epaper_display);
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}
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}
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}
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void common_hal_displayio_release_displays(void) {
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// Release displays before busses so that they can send any final commands to turn the display
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// off properly.
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_type = displays[i].display_base.type;
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if (display_type == NULL || display_type == &mp_type_NoneType) {
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continue;
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} else if (display_type == &displayio_display_type) {
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release_display(&displays[i].display);
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} else if (display_type == &displayio_epaperdisplay_type) {
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release_epaperdisplay(&displays[i].epaper_display);
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#if CIRCUITPY_FRAMEBUFFERIO
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} else if (display_type == &framebufferio_framebufferdisplay_type) {
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release_framebufferdisplay(&displays[i].framebuffer_display);
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#endif
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}
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displays[i].display.base.type = &mp_type_NoneType;
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}
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t bus_type = display_buses[i].bus_base.type;
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if (bus_type == NULL || bus_type == &mp_type_NoneType) {
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continue;
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} else if (bus_type == &displayio_fourwire_type) {
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common_hal_displayio_fourwire_deinit(&display_buses[i].fourwire_bus);
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} else if (bus_type == &displayio_i2cdisplay_type) {
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common_hal_displayio_i2cdisplay_deinit(&display_buses[i].i2cdisplay_bus);
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#if CIRCUITPY_DOTCLOCKFRAMEBUFFER
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} else if (bus_type == &dotclockframebuffer_framebuffer_type) {
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common_hal_dotclockframebuffer_framebuffer_deinit(&display_buses[i].dotclock);
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#endif
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#if CIRCUITPY_PARALLELDISPLAY
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} else if (bus_type == ¶lleldisplay_parallelbus_type) {
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common_hal_paralleldisplay_parallelbus_deinit(&display_buses[i].parallel_bus);
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#endif
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#if CIRCUITPY_RGBMATRIX
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} else if (bus_type == &rgbmatrix_RGBMatrix_type) {
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common_hal_rgbmatrix_rgbmatrix_deinit(&display_buses[i].rgbmatrix);
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#endif
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#if CIRCUITPY_IS31FL3741
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} else if (bus_type == &is31fl3741_FrameBuffer_type) {
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common_hal_is31fl3741_FrameBuffer_deinit(&display_buses[i].is31fl3741);
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#endif
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#if CIRCUITPY_SHARPDISPLAY
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} else if (bus_type == &sharpdisplay_framebuffer_type) {
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common_hal_sharpdisplay_framebuffer_deinit(&display_buses[i].sharpdisplay);
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#endif
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#if CIRCUITPY_VIDEOCORE
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} else if (bus_type == &videocore_framebuffer_type) {
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common_hal_videocore_framebuffer_deinit(&display_buses[i].videocore);
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#endif
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#if CIRCUITPY_PICODVI
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} else if (bus_type == &picodvi_framebuffer_type) {
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common_hal_picodvi_framebuffer_deinit(&display_buses[i].picodvi);
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#endif
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}
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display_buses[i].bus_base.type = &mp_type_NoneType;
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}
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supervisor_stop_terminal();
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}
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void reset_displays(void) {
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// The SPI buses used by FourWires may be allocated on the heap so we need to move them inline.
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_bus_type = display_buses[i].bus_base.type;
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if (display_bus_type == &displayio_fourwire_type) {
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displayio_fourwire_obj_t *fourwire = &display_buses[i].fourwire_bus;
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if (((size_t)fourwire->bus) < ((size_t)&display_buses) ||
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((size_t)fourwire->bus) > ((size_t)&display_buses + CIRCUITPY_DISPLAY_LIMIT * sizeof(primary_display_bus_t))) {
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busio_spi_obj_t *original_spi = fourwire->bus;
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#if CIRCUITPY_BOARD_SPI
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// We don't need to move original_spi if it is a board.SPI object because it is
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// statically allocated already. (Doing so would also make it impossible to reference in
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// a subsequent VM run.)
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if (common_hal_board_is_spi(original_spi)) {
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continue;
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}
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#endif
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#ifdef BOARD_USE_INTERNAL_SPI
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if (original_spi == (mp_obj_t)(&supervisor_flash_spi_bus)) {
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continue;
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}
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#endif
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memcpy(&fourwire->inline_bus, original_spi, sizeof(busio_spi_obj_t));
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fourwire->bus = &fourwire->inline_bus;
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// Check for other display buses that use the same spi bus and swap them too.
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for (uint8_t j = i + 1; j < CIRCUITPY_DISPLAY_LIMIT; j++) {
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if (display_buses[j].fourwire_bus.base.type == &displayio_fourwire_type &&
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display_buses[j].fourwire_bus.bus == original_spi) {
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display_buses[j].fourwire_bus.bus = &fourwire->inline_bus;
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}
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}
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}
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} else if (display_bus_type == &displayio_i2cdisplay_type) {
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displayio_i2cdisplay_obj_t *i2c = &display_buses[i].i2cdisplay_bus;
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// Check to see if we need to inline the I2C bus.
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if (((size_t)i2c->bus) < ((size_t)&display_buses) ||
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((size_t)i2c->bus) > ((size_t)&display_buses + CIRCUITPY_DISPLAY_LIMIT * sizeof(primary_display_bus_t))) {
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busio_i2c_obj_t *original_i2c = i2c->bus;
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#if CIRCUITPY_BOARD_I2C
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// We don't need to move original_i2c if it is a board.I2C object because it is
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// statically allocated already. (Doing so would also make it impossible to reference in
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// a subsequent VM run.)
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if (common_hal_board_is_i2c(original_i2c)) {
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continue;
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}
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#endif
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memcpy(&i2c->inline_bus, original_i2c, sizeof(busio_i2c_obj_t));
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i2c->bus = &i2c->inline_bus;
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// Check for other displays that use the same i2c bus and swap them too.
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for (uint8_t j = i + 1; j < CIRCUITPY_DISPLAY_LIMIT; j++) {
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if (display_buses[j].i2cdisplay_bus.base.type == &displayio_i2cdisplay_type &&
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display_buses[j].i2cdisplay_bus.bus == original_i2c) {
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display_buses[j].i2cdisplay_bus.bus = &i2c->inline_bus;
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}
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}
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}
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#if CIRCUITPY_RGBMATRIX
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} else if (display_bus_type == &rgbmatrix_RGBMatrix_type) {
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rgbmatrix_rgbmatrix_obj_t *pm = &display_buses[i].rgbmatrix;
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if (!any_display_uses_this_framebuffer(&pm->base)) {
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common_hal_rgbmatrix_rgbmatrix_deinit(pm);
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} else {
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common_hal_rgbmatrix_rgbmatrix_set_paused(pm, true);
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}
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#endif
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#if CIRCUITPY_IS31FL3741
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} else if (display_bus_type == &is31fl3741_FrameBuffer_type) {
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is31fl3741_FrameBuffer_obj_t *is31fb = &display_buses[i].is31fl3741;
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if (((uint32_t)is31fb->is31fl3741->i2c) < ((uint32_t)&display_buses) ||
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((uint32_t)is31fb->is31fl3741->i2c) > ((uint32_t)&display_buses + CIRCUITPY_DISPLAY_LIMIT)) {
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#if CIRCUITPY_BOARD_I2C
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// We don't need to move original_i2c if it is the board.I2C object because it is
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// statically allocated already. (Doing so would also make it impossible to reference in
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// a subsequent VM run.)
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if (common_hal_board_is_i2c(is31fb->is31fl3741->i2c)) {
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continue;
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}
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#endif
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is31fl3741_IS31FL3741_obj_t *original_is31 = is31fb->is31fl3741;
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memcpy(&is31fb->inline_is31fl3741, original_is31, sizeof(is31fl3741_IS31FL3741_obj_t));
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is31fb->is31fl3741 = &is31fb->inline_is31fl3741;
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busio_i2c_obj_t *original_i2c = is31fb->is31fl3741->i2c;
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memcpy(&is31fb->is31fl3741->inline_i2c, original_i2c, sizeof(busio_i2c_obj_t));
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is31fb->is31fl3741->i2c = &is31fb->is31fl3741->inline_i2c;
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}
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if (!any_display_uses_this_framebuffer(&is31fb->base)) {
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common_hal_is31fl3741_FrameBuffer_deinit(is31fb);
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} else {
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common_hal_is31fl3741_FrameBuffer_set_paused(is31fb, true);
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}
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#endif
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#if CIRCUITPY_SHARPDISPLAY
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} else if (display_bus_type == &sharpdisplay_framebuffer_type) {
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sharpdisplay_framebuffer_obj_t *sharp = &display_buses[i].sharpdisplay;
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common_hal_sharpdisplay_framebuffer_reset(sharp);
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#endif
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#if CIRCUITPY_VIDEOCORE
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} else if (display_bus_type == &videocore_framebuffer_type) {
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videocore_framebuffer_obj_t *vc = &display_buses[i].videocore;
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if (!any_display_uses_this_framebuffer(&vc->base)) {
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common_hal_videocore_framebuffer_deinit(vc);
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}
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// The framebuffer is allocated outside of the heap so it doesn't
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// need to be moved.
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#endif
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#if CIRCUITPY_PICODVI
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} else if (display_bus_type == &picodvi_framebuffer_type) {
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picodvi_framebuffer_obj_t *vc = &display_buses[i].picodvi;
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if (!any_display_uses_this_framebuffer(&vc->base)) {
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common_hal_picodvi_framebuffer_deinit(vc);
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}
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#endif
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} else {
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// Not an active display bus.
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continue;
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}
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}
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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// Reset the displayed group. Only the first will get the terminal but
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// that's ok.
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mp_const_obj_t display_type = displays[i].display_base.type;
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if (display_type == &displayio_display_type) {
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reset_display(&displays[i].display);
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} else if (display_type == &displayio_epaperdisplay_type) {
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displayio_epaperdisplay_obj_t *display = &displays[i].epaper_display;
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displayio_epaperdisplay_reset(display);
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#if CIRCUITPY_FRAMEBUFFERIO
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} else if (display_type == &framebufferio_framebufferdisplay_type) {
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framebufferio_framebufferdisplay_reset(&displays[i].framebuffer_display);
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#endif
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}
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}
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}
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void displayio_gc_collect(void) {
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_bus_type = display_buses[i].bus_base.type;
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if (display_bus_type == NULL || display_bus_type == &mp_type_NoneType) {
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continue;
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}
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#if CIRCUITPY_RGBMATRIX
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if (display_bus_type == &rgbmatrix_RGBMatrix_type) {
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rgbmatrix_rgbmatrix_collect_ptrs(&display_buses[i].rgbmatrix);
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}
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#endif
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#if CIRCUITPY_IS31FL3741
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if (display_bus_type == &is31fl3741_FrameBuffer_type) {
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is31fl3741_FrameBuffer_collect_ptrs(&display_buses[i].is31fl3741);
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}
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#endif
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#if CIRCUITPY_SHARPDISPLAY
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if (display_bus_type == &sharpdisplay_framebuffer_type) {
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common_hal_sharpdisplay_framebuffer_collect_ptrs(&display_buses[i].sharpdisplay);
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}
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#endif
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}
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_type = displays[i].display_base.type;
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if (display_type == NULL || display_type == &mp_type_NoneType) {
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continue;
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}
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// Alternatively, we could use gc_collect_root over the whole object,
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// but this is more precise, and is the only field that needs marking.
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if (display_type == &displayio_display_type) {
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displayio_display_collect_ptrs(&displays[i].display);
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#if CIRCUITPY_FRAMEBUFFERIO
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} else if (display_type == &framebufferio_framebufferdisplay_type) {
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framebufferio_framebufferdisplay_collect_ptrs(&displays[i].framebuffer_display);
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#endif
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} else if (display_type == &displayio_epaperdisplay_type) {
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displayio_epaperdisplay_collect_ptrs(&displays[i].epaper_display);
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}
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}
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}
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primary_display_t *allocate_display(void) {
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_type = displays[i].display.base.type;
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if (display_type == NULL || display_type == &mp_type_NoneType) {
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// Clear this memory so it is in a known state before init.
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memset(&displays[i], 0, sizeof(displays[i]));
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// Default to None so that it works as board.DISPLAY.
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displays[i].display_base.type = &mp_type_NoneType;
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return &displays[i];
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}
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}
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return NULL;
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}
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primary_display_t *allocate_display_or_raise(void) {
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primary_display_t *result = allocate_display();
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if (result) {
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return result;
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}
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mp_raise_RuntimeError(translate("Too many displays"));
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}
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primary_display_bus_t *allocate_display_bus(void) {
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for (uint8_t i = 0; i < CIRCUITPY_DISPLAY_LIMIT; i++) {
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mp_const_obj_t display_bus_type = display_buses[i].bus_base.type;
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if (display_bus_type == NULL || display_bus_type == &mp_type_NoneType) {
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// Clear this memory so it is in a known state before init.
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memset(&display_buses[i], 0, sizeof(display_buses[i]));
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display_buses[i].bus_base.type = &mp_type_NoneType;
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return &display_buses[i];
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}
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}
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return NULL;
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}
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primary_display_bus_t *allocate_display_bus_or_raise(void) {
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primary_display_bus_t *result = allocate_display_bus();
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if (result) {
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return result;
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}
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mp_raise_RuntimeError(translate("Too many display busses; forgot displayio.release_displays() ?"));
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}
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