Mali DP needs to have all the planes that are becoming inactive in the new state disabled before re-enabling the active CRTC, otherwise we start streaming out data from old pointers in memory.

Signed-off-by: Liviu Dudau Liviu.Dudau@arm.com Reviewed-by: Brian Starkey brian.starkey@arm.com --- drivers/gpu/drm/arm/malidp_drv.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index ea2546f766c2..f5cecdc3f14a 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -66,10 +66,12 @@ static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state) struct drm_pending_vblank_event *event; struct drm_device *drm = state->dev; struct malidp_drm *malidp = drm->dev_private; - int ret = malidp_set_and_wait_config_valid(drm);

- if (ret) - DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n"); + if (malidp->crtc.enabled) { + /* only set config_valid if the CRTC is enabled */ + if (malidp_set_and_wait_config_valid(drm)) + DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n"); + }

event = malidp->crtc.state->event; if (event) { @@ -90,9 +92,11 @@ static void malidp_atomic_commit_tail(struct drm_atomic_state *state) struct drm_device *drm = state->dev;

drm_atomic_helper_commit_modeset_disables(drm, state); - drm_atomic_helper_commit_modeset_enables(drm, state); + drm_atomic_helper_commit_planes(drm, state, 0);

+ drm_atomic_helper_commit_modeset_enables(drm, state); + malidp_atomic_commit_hw_done(state);

drm_atomic_helper_wait_for_vblanks(drm, state);