| Message ID | 20230302235356.3148279-15-robdclark@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | dma-fence: Deadline awareness | expand |
On 03/03/2023 01:53, Rob Clark wrote: > From: Rob Clark <robdclark@chromium.org> > > Drop our custom thing and switch to drm_crtc_next_vblank_start() for > calculating the time of the start of the next vblank period. > > Signed-off-by: Rob Clark <robdclark@chromium.org> It took me a while to dig into the differences between old and proposed paths. Looks correct to me. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 15 --------------- > drivers/gpu/drm/msm/msm_atomic.c | 8 +++++--- > drivers/gpu/drm/msm/msm_kms.h | 8 -------- > 3 files changed, 5 insertions(+), 26 deletions(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > index a683bd9b5a04..43996aecaf8c 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > @@ -411,20 +411,6 @@ static void dpu_kms_disable_commit(struct msm_kms *kms) > pm_runtime_put_sync(&dpu_kms->pdev->dev); > } > > -static ktime_t dpu_kms_vsync_time(struct msm_kms *kms, struct drm_crtc *crtc) > -{ > - struct drm_encoder *encoder; > - > - drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask) { > - ktime_t vsync_time; > - > - if (dpu_encoder_vsync_time(encoder, &vsync_time) == 0) > - return vsync_time; > - } > - > - return ktime_get(); > -} > - > static void dpu_kms_prepare_commit(struct msm_kms *kms, > struct drm_atomic_state *state) > { > @@ -953,7 +939,6 @@ static const struct msm_kms_funcs kms_funcs = { > .irq = dpu_core_irq, > .enable_commit = dpu_kms_enable_commit, > .disable_commit = dpu_kms_disable_commit, > - .vsync_time = dpu_kms_vsync_time, > .prepare_commit = dpu_kms_prepare_commit, > .flush_commit = dpu_kms_flush_commit, > .wait_flush = dpu_kms_wait_flush, > diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c > index 1686fbb611fd..c5e71c05f038 100644 > --- a/drivers/gpu/drm/msm/msm_atomic.c > +++ b/drivers/gpu/drm/msm/msm_atomic.c > @@ -186,8 +186,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) > struct msm_kms *kms = priv->kms; > struct drm_crtc *async_crtc = NULL; > unsigned crtc_mask = get_crtc_mask(state); > - bool async = kms->funcs->vsync_time && > - can_do_async(state, &async_crtc); > + bool async = can_do_async(state, &async_crtc); > > trace_msm_atomic_commit_tail_start(async, crtc_mask); > > @@ -231,7 +230,9 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) > > kms->pending_crtc_mask |= crtc_mask; > > - vsync_time = kms->funcs->vsync_time(kms, async_crtc); > + if (drm_crtc_next_vblank_start(async_crtc, &vsync_time)) > + goto fallback; > + > wakeup_time = ktime_sub(vsync_time, ms_to_ktime(1)); > > msm_hrtimer_queue_work(&timer->work, wakeup_time, > @@ -253,6 +254,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) > return; > } > > +fallback: > /* > * If there is any async flush pending on updated crtcs, fold > * them into the current flush. > diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h > index f8ed7588928c..086a3f1ff956 100644 > --- a/drivers/gpu/drm/msm/msm_kms.h > +++ b/drivers/gpu/drm/msm/msm_kms.h > @@ -59,14 +59,6 @@ struct msm_kms_funcs { > void (*enable_commit)(struct msm_kms *kms); > void (*disable_commit)(struct msm_kms *kms); > > - /** > - * If the kms backend supports async commit, it should implement > - * this method to return the time of the next vsync. This is > - * used to determine a time slightly before vsync, for the async > - * commit timer to run and complete an async commit. > - */ > - ktime_t (*vsync_time)(struct msm_kms *kms, struct drm_crtc *crtc); > - > /** > * Prepare for atomic commit. This is called after any previous > * (async or otherwise) commit has completed.
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index a683bd9b5a04..43996aecaf8c 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -411,20 +411,6 @@ static void dpu_kms_disable_commit(struct msm_kms *kms) pm_runtime_put_sync(&dpu_kms->pdev->dev); } -static ktime_t dpu_kms_vsync_time(struct msm_kms *kms, struct drm_crtc *crtc) -{ - struct drm_encoder *encoder; - - drm_for_each_encoder_mask(encoder, crtc->dev, crtc->state->encoder_mask) { - ktime_t vsync_time; - - if (dpu_encoder_vsync_time(encoder, &vsync_time) == 0) - return vsync_time; - } - - return ktime_get(); -} - static void dpu_kms_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state) { @@ -953,7 +939,6 @@ static const struct msm_kms_funcs kms_funcs = { .irq = dpu_core_irq, .enable_commit = dpu_kms_enable_commit, .disable_commit = dpu_kms_disable_commit, - .vsync_time = dpu_kms_vsync_time, .prepare_commit = dpu_kms_prepare_commit, .flush_commit = dpu_kms_flush_commit, .wait_flush = dpu_kms_wait_flush, diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index 1686fbb611fd..c5e71c05f038 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -186,8 +186,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) struct msm_kms *kms = priv->kms; struct drm_crtc *async_crtc = NULL; unsigned crtc_mask = get_crtc_mask(state); - bool async = kms->funcs->vsync_time && - can_do_async(state, &async_crtc); + bool async = can_do_async(state, &async_crtc); trace_msm_atomic_commit_tail_start(async, crtc_mask); @@ -231,7 +230,9 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) kms->pending_crtc_mask |= crtc_mask; - vsync_time = kms->funcs->vsync_time(kms, async_crtc); + if (drm_crtc_next_vblank_start(async_crtc, &vsync_time)) + goto fallback; + wakeup_time = ktime_sub(vsync_time, ms_to_ktime(1)); msm_hrtimer_queue_work(&timer->work, wakeup_time, @@ -253,6 +254,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) return; } +fallback: /* * If there is any async flush pending on updated crtcs, fold * them into the current flush. diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index f8ed7588928c..086a3f1ff956 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -59,14 +59,6 @@ struct msm_kms_funcs { void (*enable_commit)(struct msm_kms *kms); void (*disable_commit)(struct msm_kms *kms); - /** - * If the kms backend supports async commit, it should implement - * this method to return the time of the next vsync. This is - * used to determine a time slightly before vsync, for the async - * commit timer to run and complete an async commit. - */ - ktime_t (*vsync_time)(struct msm_kms *kms, struct drm_crtc *crtc); - /** * Prepare for atomic commit. This is called after any previous * (async or otherwise) commit has completed.