From d6ac4a84e7a3713929ec473cb8c10acc1dec41a2 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Thu, 20 Nov 2014 17:05:04 -0500 Subject: [PATCH] drm/msm/mdp5: dpms(OFF) cleanups When disabling the interface (INTF), the change doesn't latch until next vblank, so we need to wait for vblank. Also, to be pedantic, in the crtc, set all the mixer stages to unused. It shouldn't really matter, since at this point we have already disabled the INTF and waited for necessary vblank. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c | 2 ++ drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c | 11 +++++++++++ 2 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c index a6728a8..0598bde 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c @@ -150,6 +150,8 @@ static void mdp5_crtc_dpms(struct drm_crtc *crtc, int mode) mdp5_enable(mdp5_kms); mdp_irq_register(&mdp5_kms->base, &mdp5_crtc->err); } else { + /* set STAGE_UNUSED for all layers */ + mdp5_ctl_blend(mdp5_crtc->ctl, mdp5_crtc->lm, 0x00000000); mdp_irq_unregister(&mdp5_kms->base, &mdp5_crtc->err); mdp5_disable(mdp5_kms); } diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c index 25c2fcb..0254bfd 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c @@ -132,6 +132,17 @@ static void mdp5_encoder_dpms(struct drm_encoder *encoder, int mode) spin_lock_irqsave(&mdp5_encoder->intf_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intf), 0); spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags); + + /* + * Wait for a vsync so we know the ENABLE=0 latched before + * the (connector) source of the vsync's gets disabled, + * otherwise we end up in a funny state if we re-enable + * before the disable latches, which results that some of + * the settings changes for the new modeset (like new + * scanout buffer) don't latch properly.. + */ + mdp_irq_wait(&mdp5_kms->base, intf2vblank(intf)); + bs_set(mdp5_encoder, 0); } -- 2.7.4