Function virtio_gpu_control

components/drivers/virtio/virtio_gpu.c:488–668

}

static rt_err_t virtio_gpu_control(rt_device_t dev, int cmd, void *args)
{
    rt_err_t status = RT_EOK;
    struct virtio_gpu_device *virtio_gpu_dev = (struct virtio_gpu_device *)dev;

    switch (cmd)
    {
    case VIRTIO_DEVICE_CTRL_GPU_SET_PRIMARY:

        _primary_virtio_gpu_dev = virtio_gpu_dev;

        return status;
    }

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

    switch (cmd)
    {
    case RTGRAPHIC_CTRL_RECT_UPDATE:
        {
            struct rt_device_rect_info *info = (struct rt_device_rect_info *)args;

            if (virtio_gpu_dev->pmode_id == VIRTIO_GPU_INVALID_PMODE_ID)
            {
                status = -RT_ERROR;
                break;
            }

            status = virtio_gpu_gfx_flush_2d(virtio_gpu_dev, virtio_gpu_dev->display_resource_id,
                    info->x, info->y, info->width, info->height);
        }
        break;
    case RTGRAPHIC_CTRL_GET_INFO:
        {
            struct rt_device_graphic_info *info = (struct rt_device_graphic_info *)args;

            info->pixel_format      = _pixel_format_convert((rt_ubase_t)args, RT_FALSE);
            info->bits_per_pixel    = VIRTIO_GPU_FORMAT_BPP;
            info->pitch             = virtio_gpu_dev->pmode.r.width * VIRTIO_GPU_FORMAT_PIXEL;
            info->width             = virtio_gpu_dev->pmode.r.width;
            info->height            = virtio_gpu_dev->pmode.r.height;
            info->framebuffer       = virtio_gpu_dev->framebuffer;
            info->smem_len          = virtio_gpu_dev->smem_len;
        }
        break;
    case VIRTIO_DEVICE_CTRL_GPU_CREATE_2D:

        virtio_gpu_dev->format = _pixel_format_convert((rt_ubase_t)args, RT_TRUE);

        if (virtio_gpu_dev->format == 0 || virtio_gpu_dev->pmode_id == VIRTIO_GPU_INVALID_PMODE_ID)
        {
            status = -RT_ERROR;
            break;
        }