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drm/vc4: Fix sending of page flip completion events in FKMS mode.

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In the rewrite of vc4_crtc.c for fkms, I dropped the part of the
CRTC's atomic flush handler that moved the completion event from the
proposed atomic state change to the CRTC's current state.  That meant
that when full screen pageflipping happened (glxgears -fullscreen in
X, compton, por weston), the app would end up blocked firever waiting
to draw its next frame.

Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Eric Anholt
2017-02-02 09:42:18 -08:00
committed by popcornmix
parent 5c7fab1ada
commit 95c8ff2588
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/vc4/vc4_firmware_kms.c
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@@ -336,6 +336,21 @@ static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
static void vc4_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
struct drm_device *dev = crtc->dev;
if (crtc->state->event) {
unsigned long flags;
crtc->state->event->pipe = drm_crtc_index(crtc);
WARN_ON(drm_crtc_vblank_get(crtc) != 0);
spin_lock_irqsave(&dev->event_lock, flags);
vc4_crtc->event = crtc->state->event;
crtc->state->event = NULL;
spin_unlock_irqrestore(&dev->event_lock, flags);
}
}
static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc)