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authorIlija Hadzic <ihadzic@research.bell-labs.com>2011-03-18 16:58:04 -0500
committerDave Airlie <airlied@redhat.com>2011-03-21 09:25:54 +1000
commit19b01b5fbf0b78930b3b06ee6080539c17b5d1fd (patch)
treeb2cfeb6aeae49bc4061ce8923a63b6b8bd4d6e1d /include/drm
parentb74ad5ae14def5e81ad0be3dddb96e485b861b1b (diff)
downloadblackbird-op-linux-19b01b5fbf0b78930b3b06ee6080539c17b5d1fd.tar.gz
blackbird-op-linux-19b01b5fbf0b78930b3b06ee6080539c17b5d1fd.zip
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 'include/drm')
-rw-r--r--include/drm/drm.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm.h b/include/drm/drm.h
index 9ac431396176..99cd07433fab 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -469,6 +469,8 @@ enum drm_vblank_seq_type {
_DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
_DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking, unsupported */
};
+#define _DRM_VBLANK_HIGH_CRTC_SHIFT 16
+#define _DRM_VBLANK_HIGH_CRTC_MASK 0x001F0000
#define _DRM_VBLANK_TYPES_MASK (_DRM_VBLANK_ABSOLUTE | _DRM_VBLANK_RELATIVE)
#define _DRM_VBLANK_FLAGS_MASK (_DRM_VBLANK_EVENT | _DRM_VBLANK_SIGNAL | \
@@ -753,6 +755,7 @@ struct drm_event_vblank {
};
#define DRM_CAP_DUMB_BUFFER 0x1
+#define DRM_CAP_HIGH_CRTC 0x2
/* typedef area */
#ifndef __KERNEL__
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