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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | /* * Copyright (c) 2018-2019 Jan Van Winkel <jan.van_winkel@dxplore.eu> * * SPDX-License-Identifier: Apache-2.0 */ #include <init.h> #include <zephyr.h> #include <lvgl.h> #include "lvgl_display.h" #ifdef CONFIG_LVGL_FILESYSTEM #include "lvgl_fs.h" #endif #include LV_MEM_CUSTOM_INCLUDE #define LOG_LEVEL CONFIG_LVGL_LOG_LEVEL #include <logging/log.h> LOG_MODULE_REGISTER(lvgl); #ifdef CONFIG_LVGL_BUFFER_ALLOC_STATIC static lv_disp_buf_t disp_buf; #define BUFFER_SIZE (CONFIG_LVGL_BITS_PER_PIXEL * ((CONFIG_LVGL_VDB_SIZE * \ CONFIG_LVGL_HOR_RES * CONFIG_LVGL_VER_RES) / 100) / 8) #define NBR_PIXELS_IN_BUFFER (BUFFER_SIZE * 8 / CONFIG_LVGL_BITS_PER_PIXEL) static u8_t buf0[BUFFER_SIZE]; #ifdef CONFIG_LVGL_DOUBLE_VDB static u8_t buf1[BUFFER_SIZE]; #endif #endif /* CONFIG_LVGL_BUFFER_ALLOC_STATIC */ #if CONFIG_LVGL_LOG_LEVEL != 0 static void lvgl_log(lv_log_level_t level, const char *file, uint32_t line, const char *dsc) { /* Convert LVGL log level to Zephyr log level * * LVGL log level mapping: * * LV_LOG_LEVEL_TRACE 0 * * LV_LOG_LEVEL_INFO 1 * * LV_LOG_LEVEL_WARN 2 * * LV_LOG_LEVEL_ERROR 3 * * LV_LOG_LEVEL_NUM 4 * * Zephyr log level mapping: * * LOG_LEVEL_NONE 0 * * LOG_LEVEL_ERR 1 * * LOG_LEVEL_WRN 2 * * LOG_LEVEL_INF 3 * * LOG_LEVEL_DBG 4 */ u8_t zephyr_level = LOG_LEVEL_DBG - level; ARG_UNUSED(file); ARG_UNUSED(line); Z_LOG(zephyr_level, "%s", dsc); } #endif #ifdef CONFIG_LVGL_BUFFER_ALLOC_STATIC static int lvgl_allocate_rendering_buffers(lv_disp_drv_t *disp_drv) { disp_drv->buffer = &disp_buf; #ifdef CONFIG_LVGL_DOUBLE_VDB lv_disp_buf_init(disp_drv->buffer, &buf0, &buf1, NBR_PIXELS_IN_BUFFER); #else lv_disp_buf_init(disp_drv->buffer, &buf0, NULL, NBR_PIXELS_IN_BUFFER); #endif /* CONFIG_LVGL_DOUBLE_VDB */ return 0; } #else static int lvgl_allocate_rendering_buffers(lv_disp_drv_t *disp_drv) { void *buf0 = NULL; void *buf1 = NULL; u16_t buf_nbr_pixels; u32_t buf_size; struct display_capabilities cap; struct device *display_dev = (struct device *)disp_drv->user_data; display_get_capabilities(display_dev, &cap); disp_drv->hor_res = cap.x_resolution; disp_drv->ver_res = cap.y_resolution; buf_nbr_pixels = (CONFIG_LVGL_VDB_SIZE * disp_drv->hor_res * disp_drv->ver_res) / 100; /* one horizontal line is the minimum buffer requirement for lvgl */ if (buf_nbr_pixels < disp_drv->hor_res) { buf_nbr_pixels = disp_drv->hor_res; } switch (cap.current_pixel_format) { case PIXEL_FORMAT_ARGB_8888: buf_size = 4 * buf_nbr_pixels; break; case PIXEL_FORMAT_RGB_888: buf_size = 3 * buf_nbr_pixels; break; case PIXEL_FORMAT_RGB_565: buf_size = 2 * buf_nbr_pixels; break; case PIXEL_FORMAT_MONO01: case PIXEL_FORMAT_MONO10: buf_size = buf_nbr_pixels / 8; buf_size += (buf_nbr_pixels % 8) == 0 ? 0 : 1; break; default: return -ENOTSUP; } buf0 = LV_MEM_CUSTOM_ALLOC(buf_size); if (buf0 == NULL) { LOG_ERR("Failed to allocate memory for rendering buffer"); return -ENOMEM; } #ifdef CONFIG_LVGL_DOUBLE_VDB buf1 = LV_MEM_CUSTOM_ALLOC(buf_size); if (buf1 == NULL) { LV_MEM_CUSTOM_FREE(buf0); LOG_ERR("Failed to allocate memory for rendering buffer"); return -ENOMEM; } #endif disp_drv->buffer = LV_MEM_CUSTOM_ALLOC(sizeof(lv_disp_buf_t)); if (disp_drv->buffer == NULL) { LV_MEM_CUSTOM_FREE(buf0); LV_MEM_CUSTOM_FREE(buf1); LOG_ERR("Failed to allocate memory to store rendering buffers"); return -ENOMEM; } lv_disp_buf_init(disp_drv->buffer, buf0, buf1, buf_nbr_pixels); return 0; } #endif /* CONFIG_LVGL_BUFFER_ALLOC_STATIC */ static int lvgl_init(struct device *dev) { ARG_UNUSED(dev); struct device *display_dev = device_get_binding(CONFIG_LVGL_DISPLAY_DEV_NAME); lv_disp_drv_t disp_drv; if (display_dev == NULL) { LOG_ERR("Display device not found."); return -ENODEV; } #if CONFIG_LVGL_LOG_LEVEL != 0 lv_log_register_print_cb(lvgl_log); #endif lv_init(); #ifdef CONFIG_LVGL_FILESYSTEM lvgl_fs_init(); #endif lv_disp_drv_init(&disp_drv); disp_drv.user_data = (void *) display_dev; lvgl_allocate_rendering_buffers(&disp_drv); if (set_lvgl_rendering_cb(&disp_drv) != 0) { LOG_ERR("Display not supported."); return -ENOTSUP; } if (lv_disp_drv_register(&disp_drv) == NULL) { LOG_ERR("Failed to register display device."); return -EPERM; } return 0; } SYS_INIT(lvgl_init, APPLICATION, CONFIG_APPLICATION_INIT_PRIORITY); |