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drm/mgag200: Add FB_DAMAGE_CLIPS support

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The driver does support damage clips, but doesn't advertise it.
So when running gnome/wayland on Matrox hardware, the full frame is
copied to the slow Matrox memory, which leads to very poor performances.

Add drm_plane_enable_fb_damage_clips() to advertise this capability to
userspace.

With this patch, gnome/wayland becomes usable on Matrox GPU.

Suggested-by: Jonas Ådahl <jadahl@gmail.com>
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504134026.283417-2-jfalempe@redhat.com
This commit is contained in:
Jocelyn Falempe
2022-05-04 15:40:24 +02:00
parent 0f6e2fff57
commit 3064debaf5
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/mgag200/mgag200_mode.c
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@@ -1121,6 +1121,8 @@ int mgag200_modeset_init(struct mga_device *mdev)
return ret;
}
drm_plane_enable_fb_damage_clips(&pipe->plane);
/* FIXME: legacy gamma tables; convert to CRTC state */
drm_mode_crtc_set_gamma_size(&pipe->crtc, MGAG200_LUT_SIZE);