From: Varad Gautam varad.gautam@collabora.com
the hardware does not provide interrupts on vblank, so we just send a fake vblank event on atomic_flush.
Signed-off-by: Varad Gautam varad.gautam@collabora.com --- drivers/gpu/drm/cirrus/cirrus_mode.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/cirrus/cirrus_mode.c b/drivers/gpu/drm/cirrus/cirrus_mode.c index ee023c865165..4c95447ac445 100644 --- a/drivers/gpu/drm/cirrus/cirrus_mode.c +++ b/drivers/gpu/drm/cirrus/cirrus_mode.c @@ -217,6 +217,23 @@ static void cirrus_crtc_destroy(struct drm_crtc *crtc) kfree(cirrus_crtc); }
+static void cirrus_crtc_atomic_flush(struct drm_crtc *crtc, + struct drm_crtc_state *old_crtc_state) +{ + struct drm_device *dev = crtc->dev; + struct drm_pending_vblank_event *event; + unsigned long flags; + + if (crtc->state && crtc->state->event) { + event = crtc->state->event; + crtc->state->event = NULL; + + spin_lock_irqsave(&dev->event_lock, flags); + drm_crtc_send_vblank_event(crtc, event); + spin_unlock_irqrestore(&dev->event_lock, flags); + } +} + /* These provide the minimum set of functions required to handle a CRTC */ static const struct drm_crtc_funcs cirrus_crtc_funcs = { .gamma_set = cirrus_crtc_gamma_set, @@ -234,6 +251,7 @@ static const struct drm_crtc_helper_funcs cirrus_helper_funcs = { .mode_set_nofb = cirrus_mode_set_nofb, .prepare = cirrus_crtc_prepare, .commit = cirrus_crtc_commit, + .atomic_flush = cirrus_crtc_atomic_flush, };
static int cirrus_plane_update(struct drm_plane *plane,