Function fb_init

components/drivers/virtio/virtio.c:419–465

#endif

static int fb_init()
{
    _gpu_dev = rt_device_find("virtio-gpu0");

    if(_gpu_dev == RT_NULL)
    {
        return -RT_ERROR;
    }

    if(_gpu_dev != RT_NULL && rt_device_open(_gpu_dev, 0) == RT_EOK)
    {
        rt_memset(&_graphic_info, 0, sizeof(_graphic_info));
        rt_memset(&_rect_info, 0, sizeof(_rect_info));
        rt_device_control(_gpu_dev, VIRTIO_DEVICE_CTRL_GPU_SET_PRIMARY, RT_NULL);
        rt_device_control(_gpu_dev, VIRTIO_DEVICE_CTRL_GPU_CREATE_2D, (void *)RTGRAPHIC_PIXEL_FORMAT_RGB888);
        rt_device_control(_gpu_dev, RTGRAPHIC_CTRL_GET_INFO, &_graphic_info);
        _rect_info.x      = 0;
        _rect_info.y      = 0;
        _rect_info.width  = _graphic_info.width;
        _rect_info.height = _graphic_info.height;
        memset(_graphic_info.framebuffer, 0xff, _graphic_info.smem_len);
        rt_device_control(_gpu_dev, RTGRAPHIC_CTRL_RECT_UPDATE, &_rect_info);
    }

    if(rt_device_find("fb0") != RT_NULL)
    {
        rt_kprintf("a device named fb0 already exists\n");
        return -RT_ERROR;
    }

    _fb.type = RT_Device_Class_Miscellaneous;

#ifdef RT_USING_DEVICE_OPS
    _fb.ops        = &fb_ops;
#else
    _fb.init       = RT_NULL;
    _fb.open       = fb_open;
    _fb.close      = fb_close;
    _fb.read       = RT_NULL;
    _fb.write      = RT_NULL;
    _fb.control    = fb_control;
    _fb.user_data  = RT_NULL;
#endif

    rt_device_register(&_fb, "fb0", RT_DEVICE_FLAG_RDWR);
    return RT_EOK;
}
INIT_COMPONENT_EXPORT(fb_init);
#endif
#endif