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trezor-firmware/core/embed/trezorhal/stm32f4/display/stm32f429i-disc1/display_driver.c

145 lines
3.7 KiB

/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <string.h>
#include TREZOR_BOARD
#include STM32_HAL_H
#include "display_internal.h"
#include "ili9341_spi.h"
#include "xdisplay.h"
#if (DISPLAY_RESX != 240) || (DISPLAY_RESY != 320)
#error "Incompatible display resolution"
#endif
// Display driver context.
typedef struct {
// Pointer to the frame buffer
uint16_t *framebuf;
// Current display orientation (0, 90, 180, 270)
int orientation_angle;
// Current backlight level ranging from 0 to 255
int backlight_level;
} display_driver_t;
// Display driver instance
static display_driver_t g_display_driver;
void display_init(void) {
display_driver_t *drv = &g_display_driver;
memset(drv, 0, sizeof(display_driver_t));
drv->framebuf = (uint16_t *)FRAME_BUFFER_ADDR;
// Initialize LTDC controller
BSP_LCD_Init();
// Initialize external display controller
ili9341_init();
}
void display_reinit(void) {
display_driver_t *drv = &g_display_driver;
memset(drv, 0, sizeof(display_driver_t));
drv->framebuf = (uint16_t *)FRAME_BUFFER_ADDR;
}
void display_finish_actions(void) {
// Not used and intentionally left empty
}
int display_set_backlight(int level) {
display_driver_t *drv = &g_display_driver;
// Just emulation, not doing anything
drv->backlight_level = level;
return level;
}
int display_get_backlight(void) {
display_driver_t *drv = &g_display_driver;
return drv->backlight_level;
}
int display_set_orientation(int angle) {
display_driver_t *drv = &g_display_driver;
if (angle == 0 || angle == 90 || angle == 180 || angle == 270) {
// Just emulation, not doing anything
drv->orientation_angle = angle;
}
return drv->orientation_angle;
}
int display_get_orientation(void) {
display_driver_t *drv = &g_display_driver;
return drv->orientation_angle;
}
display_fb_info_t display_get_frame_buffer(void) {
display_driver_t *drv = &g_display_driver;
display_fb_info_t fb = {
.ptr = (void *)drv->framebuf,
.stride = DISPLAY_RESX * sizeof(uint16_t),
};
return fb;
}
void display_refresh(void) {
// Do nothing as using just a single frame buffer
}
void display_set_compatible_settings() {}
void display_fill(const gl_bitblt_t *bb) {
display_driver_t *drv = &g_display_driver;
gl_bitblt_t bb_new = *bb;
bb_new.dst_row = drv->framebuf + (DISPLAY_RESX * bb_new.dst_y);
bb_new.dst_stride = DISPLAY_RESX * sizeof(uint16_t);
gl_rgb565_fill(&bb_new);
}
void display_copy_rgb565(const gl_bitblt_t *bb) {
display_driver_t *drv = &g_display_driver;
gl_bitblt_t bb_new = *bb;
bb_new.dst_row = drv->framebuf + (DISPLAY_RESX * bb_new.dst_y);
bb_new.dst_stride = DISPLAY_RESX * sizeof(uint16_t);
gl_rgb565_copy_rgb565(&bb_new);
}
void display_copy_mono4(const gl_bitblt_t *bb) {
display_driver_t *drv = &g_display_driver;
gl_bitblt_t bb_new = *bb;
bb_new.dst_row = drv->framebuf + (DISPLAY_RESX * bb_new.dst_y);
bb_new.dst_stride = DISPLAY_RESX * sizeof(uint16_t);
gl_rgb565_copy_mono4(&bb_new);
}