| Message ID | 20181116184238.170034-18-sean@poorly.run (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/msm: Various dpu locking and legacy cleanups | expand |
On 2018-11-16 10:42, Sean Paul wrote: > From: Sean Paul <seanpaul@chromium.org> > > 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 > > Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c > b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c > index cd0a0bea4335..c49aaf412b6e 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c > @@ -769,8 +769,6 @@ 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; > @@ -793,8 +791,6 @@ static void _dpu_crtc_vblank_enable_no_lock( > > dpu_encoder_register_vblank_callback(enc, NULL, > NULL); > } > - > - pm_runtime_put_sync(dev->dev); > } > } > > @@ -891,6 +887,8 @@ 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, > @@ -906,6 +904,8 @@ 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);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index cd0a0bea4335..c49aaf412b6e 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -769,8 +769,6 @@ 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; @@ -793,8 +791,6 @@ static void _dpu_crtc_vblank_enable_no_lock( dpu_encoder_register_vblank_callback(enc, NULL, NULL); } - - pm_runtime_put_sync(dev->dev); } } @@ -891,6 +887,8 @@ 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, @@ -906,6 +904,8 @@ 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);