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authorIlija Hadzic <ihadzic@research.bell-labs.com>2011-03-19 00:58:04 +0300
committerDave Airlie <airlied@redhat.com>2011-03-21 02:25:54 +0300
commit19b01b5fbf0b78930b3b06ee6080539c17b5d1fd (patch)
treeb2cfeb6aeae49bc4061ce8923a63b6b8bd4d6e1d /drivers/gpu/drm/drm_ioctl.c
parentb74ad5ae14def5e81ad0be3dddb96e485b861b1b (diff)
downloadlinux-19b01b5fbf0b78930b3b06ee6080539c17b5d1fd.tar.xz
drm/kernel: vblank wait on crtc > 1
Below is a patch against drm-next branch of 2.6.38-rc8+ kernel that adds the capability to wait on vblank events for CRTCs that are greater than 1 and thus cannot be represented with primary/secondary flags in the legacy interface. It was discussed on the dri-devel list in these two threads: http://lists.freedesktop.org/archives/dri-devel/2011-March/009009.html http://lists.freedesktop.org/archives/dri-devel/2011-March/009025.html This patch extends the interface to drm_wait_vblank ioctl so that crtc>1 can be represented. It also adds a new capability to drm_getcap ioctl so that the user space can check whether the new interface to drm_wait_vblank is supported (and fall back to the legacy interface if not) Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Reviewed-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de> Acked-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Tested-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_ioctl.c')
-rw-r--r--drivers/gpu/drm/drm_ioctl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 7f6912a16761..3617b4c4bb57 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -280,6 +280,9 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
if (dev->driver->dumb_create)
req->value = 1;
break;
+ case DRM_CAP_HIGH_CRTC:
+ req->value = 1;
+ break;
default:
return -EINVAL;
}