From 78c68e8f5cd24bd32ba4ca1cdfb0c30cf0642685 Mon Sep 17 00:00:00 2001 From: Robert Beckett Date: Tue, 25 Jun 2019 18:59:13 +0100 Subject: drm/imx: notify drm core before sending event during crtc disable Notify drm core before sending pending events during crtc disable. This fixes the first event after disable having an old stale timestamp by having drm_crtc_vblank_off update the timestamp to now. This was seen while debugging weston log message: Warning: computed repaint delay is insane: -8212 msec This occurred due to: 1. driver starts up 2. fbcon comes along and restores fbdev, enabling vblank 3. vblank_disable_fn fires via timer disabling vblank, keeping vblank seq number and time set at current value (some time later) 4. weston starts and does a modeset 5. atomic commit disables crtc while it does the modeset 6. ipu_crtc_atomic_disable sends vblank with old seq number and time Fixes: a474478642d5 ("drm/imx: fix crtc vblank state regression") Signed-off-by: Robert Beckett Reviewed-by: Daniel Vetter Signed-off-by: Philipp Zabel --- drivers/gpu/drm/imx/ipuv3-crtc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c index 9cc1d678674f..e04d6efff1b5 100644 --- a/drivers/gpu/drm/imx/ipuv3-crtc.c +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c @@ -91,14 +91,14 @@ static void ipu_crtc_atomic_disable(struct drm_crtc *crtc, ipu_dc_disable(ipu); ipu_prg_disable(ipu); + drm_crtc_vblank_off(crtc); + spin_lock_irq(&crtc->dev->event_lock); if (crtc->state->event) { drm_crtc_send_vblank_event(crtc, crtc->state->event); crtc->state->event = NULL; } spin_unlock_irq(&crtc->dev->event_lock); - - drm_crtc_vblank_off(crtc); } static void imx_drm_crtc_reset(struct drm_crtc *crtc) -- cgit From 5aeab2bfc9ffa72d3ca73416635cb3785dfc076f Mon Sep 17 00:00:00 2001 From: Robert Beckett Date: Tue, 25 Jun 2019 18:59:15 +0100 Subject: drm/imx: only send event on crtc disable if kept disabled The event will be sent as part of the vblank enable during the modeset if the crtc is not being kept disabled. Fixes: 5f2f911578fb ("drm/imx: atomic phase 3 step 1: Use atomic configuration") Signed-off-by: Robert Beckett Reviewed-by: Daniel Vetter Signed-off-by: Philipp Zabel --- drivers/gpu/drm/imx/ipuv3-crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c index e04d6efff1b5..c436a28d50e4 100644 --- a/drivers/gpu/drm/imx/ipuv3-crtc.c +++ b/drivers/gpu/drm/imx/ipuv3-crtc.c @@ -94,7 +94,7 @@ static void ipu_crtc_atomic_disable(struct drm_crtc *crtc, drm_crtc_vblank_off(crtc); spin_lock_irq(&crtc->dev->event_lock); - if (crtc->state->event) { + if (crtc->state->event && !crtc->state->active) { drm_crtc_send_vblank_event(crtc, crtc->state->event); crtc->state->event = NULL; } -- cgit