lkml.org 
[lkml]   [2023]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v3] drm/virtio: Add option to disable KMS support
From
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

\
 
 \ /
  Last update: 2023-03-27 00:37    [W:0.090 / U:0.844 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site