On 2/27/23 20:38, Rob Clark wrote:
...
> + if (IS_ENABLED(CONFIG_DRM_VIRTIO_GPU_KMS)) {
> + /* get display info */
> + virtio_cread_le(vgdev->vdev, struct virtio_gpu_config,
> + num_scanouts, &num_scanouts);
> + vgdev->num_scanouts = min_t(uint32_t, num_scanouts,
> + VIRTIO_GPU_MAX_SCANOUTS);
> + if (!vgdev->num_scanouts) {
> + /*
> + * Having an EDID but no scanouts is non-sensical,
> + * but it is permitted to have no scanouts and no
> + * EDID (in which case DRIVER_MODESET and
> + * DRIVER_ATOMIC are not advertised)
> + */
> + if (vgdev->has_edid) {
> + DRM_ERROR("num_scanouts is zero\n");
> + ret = -EINVAL;
> + goto err_scanouts;
> + }
> + dev->driver_features &= ~(DRIVER_MODESET |
> DRIVER_ATOMIC);
If it's now configurable by host, why do we need the
CONFIG_DRM_VIRTIO_GPU_KMS?
--
Best regards,
Dmitry
