From: Sean Paul Date: Fri, 16 Nov 2018 18:42:27 +0000 (-0500) Subject: drm/msm: dpu: Move pm_runtime_(get|put) from vblank_enable X-Git-Tag: v5.15~7108^2^2~26 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b77d0f0d4ee757e0a27a269a8b679108162f9bd2;p=platform%2Fkernel%2Flinux-starfive.git drm/msm: dpu: Move pm_runtime_(get|put) from vblank_enable There are 4 times that _dpu_crtc_vblank_enable_no_lock() is called: 1- crtc enable 2- crtc disable 3- crtc vblank enable 4- crtc vblank disable When we enable or disable the crtc, we call drm_crtc_vblank_on and drm_crtc_vblank_off respectively. That will gate vblank enables and disables to only being called when the crtc is active. That means that we can just enable/disable pm runtime in crtc enable/disable. This will be beneficial in trying to eliminate blocking calls from the vblank call chain. Changes in v2: - None Reviewed-by: Jeykumar Sankaran Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 2846506..f359994 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -784,8 +784,6 @@ static void _dpu_crtc_vblank_enable_no_lock( struct drm_encoder *enc; if (enable) { - pm_runtime_get_sync(dev->dev); - list_for_each_entry(enc, &dev->mode_config.encoder_list, head) { if (enc->crtc != crtc) continue; @@ -808,8 +806,6 @@ static void _dpu_crtc_vblank_enable_no_lock( dpu_encoder_register_vblank_callback(enc, NULL, NULL); } - - pm_runtime_put_sync(dev->dev); } } @@ -918,6 +914,8 @@ static void dpu_crtc_disable(struct drm_crtc *crtc) crtc->state->event = NULL; spin_unlock_irqrestore(&crtc->dev->event_lock, flags); } + + pm_runtime_put_sync(crtc->dev->dev); } static void dpu_crtc_enable(struct drm_crtc *crtc, @@ -933,6 +931,8 @@ static void dpu_crtc_enable(struct drm_crtc *crtc, } priv = crtc->dev->dev_private; + pm_runtime_get_sync(crtc->dev->dev); + DRM_DEBUG_KMS("crtc%d\n", crtc->base.id); dpu_crtc = to_dpu_crtc(crtc);