A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

drm/kernel: vblank wait on crtc > 1

Browse source 
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 <[email protected]>
Reviewed-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de>
Acked-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de>
Reviewed-by: Alex Deucher <[email protected]>
Tested-by: Alex Deucher <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Ilija Hadzic 2011-03-18 16:58:04 -05:00 • committed by Dave Airlie
commit 19b01b5fbf
3 changed files with 16 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/gpu/drm/drm_ioctl.c
View file

@ -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;
}

15
drivers/gpu/drm/drm_irq.c
View file

@ -1125,7 +1125,7 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
{
union drm_wait_vblank *vblwait = data;
int ret = 0;
unsigned int flags, seq, crtc;
unsigned int flags, seq, crtc, high_crtc;
if ((!drm_dev_to_irq(dev)) || (!dev->irq_enabled))
return -EINVAL;
@ -1134,16 +1134,21 @@ int drm_wait_vblank(struct drm_device *dev, void *data,
return -EINVAL;
if (vblwait->request.type &
~(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK)) {
~(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK |
_DRM_VBLANK_HIGH_CRTC_MASK)) {
DRM_ERROR("Unsupported type value 0x%x, supported mask 0x%x\n",
vblwait->request.type,
(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK));
(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK |
_DRM_VBLANK_HIGH_CRTC_MASK));
return -EINVAL;
}
flags = vblwait->request.type & _DRM_VBLANK_FLAGS_MASK;
crtc = flags & _DRM_VBLANK_SECONDARY ? 1 : 0;
high_crtc = (vblwait->request.type & _DRM_VBLANK_HIGH_CRTC_MASK);
if (high_crtc)
crtc = high_crtc >> _DRM_VBLANK_HIGH_CRTC_SHIFT;
else
crtc = flags & _DRM_VBLANK_SECONDARY ? 1 : 0;
if (crtc >= dev->num_crtcs)
return -EINVAL;