Re: [PATCH] drm/virtio: Enable fb damage clips property for the primary plane

From: Thomas Zimmermann
Date: Fri Mar 10 2023 - 08:20:36 EST


Hi Javier

Am 10.03.23 um 13:59 schrieb Javier Martinez Canillas:
Christian Hergert reports that the driver doesn't enable the property and
that leads to always doing a full plane update, even when the driver does
support damage clipping for the primary plane.

Don't enable it for the cursor plane, because its .atomic_update callback
doesn't handle damage clips.

Reported-by: Christian Hergert <chergert@xxxxxxxxxx>
Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
---

drivers/gpu/drm/virtio/virtgpu_plane.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 4c09e313bebc..a2e045f3a000 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -390,5 +390,9 @@ struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,

virtio_gpu_plane_init() should really be two separate functions. But withing the constrains of the current code

Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

Best regards
Thomas

return plane;
drm_plane_helper_add(plane, funcs);
+
+ if (type == DRM_PLANE_TYPE_PRIMARY)
+ drm_plane_enable_fb_damage_clips(plane);
+
return plane;
}

base-commit: 3e853b9f89e4bcc8aa342fa350d83ff0df67d7e9

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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