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i915_vblank_swap: Add support for DRM_VBLANK_NEXTONMISS.

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(cherry picked from 0356fe260d commit)
This commit is contained in:
Michel Dänzer 2006-09-13 08:59:35 +02:00
parent c47ebd9707
commit 0a7d9edcfb
1 changed files with 9 additions and 15 deletions
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24
shared-core/i915_irq.c
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@ -431,7 +431,7 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
sizeof(swap));
if (swap.seqtype & ~(_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE |
_DRM_VBLANK_SECONDARY)) {
_DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)) {
DRM_ERROR("Invalid sequence type 0x%x\n", swap.seqtype);
return DRM_ERR(EINVAL);
}
@ -440,11 +440,6 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
seqtype = swap.seqtype & (_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE);
if (seqtype == _DRM_VBLANK_RELATIVE && swap.sequence == 0) {
DRM_DEBUG("Not scheduling swap for current sequence\n");
return DRM_ERR(EINVAL);
}
if (!(dev_priv->vblank_pipe & (1 << pipe))) {
DRM_ERROR("Invalid pipe %d\n", pipe);
return DRM_ERR(EINVAL);
@ -462,21 +457,20 @@ int i915_vblank_swap(DRM_IOCTL_ARGS)
curseq = atomic_read(pipe ? &dev->vbl_received2 : &dev->vbl_received);
spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
switch (seqtype) {
case _DRM_VBLANK_RELATIVE:
if (seqtype == _DRM_VBLANK_RELATIVE)
swap.sequence += curseq;
break;
case _DRM_VBLANK_ABSOLUTE:
if ((curseq - swap.sequence) <= (1<<23)) {
spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags);
if ((curseq - swap.sequence) <= (1<<23)) {
if (swap.seqtype & _DRM_VBLANK_NEXTONMISS) {
swap.sequence = curseq + 1;
} else {
DRM_DEBUG("Missed target sequence\n");
return DRM_ERR(EINVAL);
}
break;
}
spin_lock_irqsave(&dev_priv->swaps_lock, irqflags);
list_for_each(list, &dev_priv->vbl_swaps.head) {
vbl_swap = list_entry(list, drm_i915_vbl_swap_t, head);