[PATCH v2 1/6] drm/i915: Always wait for flip_done, v2.
Daniel Vetter
daniel at ffwll.ch
Thu Sep 7 09:49:36 UTC 2017
On Mon, Sep 04, 2017 at 12:48:33PM +0200, Maarten Lankhorst wrote:
> The next commit removes the wait for flip_done in in
> drm_atomic_helper_commit_cleanup_done, but we need it for the tests
> to pass. Instead of using complicated vblank tracking which ends
> up being ignored anyway, call the correct atomic helper. :)
>
> Changes since v1:
> - Always call drm_atomic_helper_wait_for_flip_done,
> even for legacy cursor updates. (danvet)
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 3 +-
> drivers/gpu/drm/i915/intel_display.c | 84 +++---------------------------------
> 2 files changed, 8 insertions(+), 79 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 38bd08f2539b..79533ba6f387 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -725,8 +725,7 @@ struct drm_i915_display_funcs {
> struct drm_atomic_state *old_state);
> void (*crtc_disable)(struct intel_crtc_state *old_crtc_state,
> struct drm_atomic_state *old_state);
> - void (*update_crtcs)(struct drm_atomic_state *state,
> - unsigned int *crtc_vblank_mask);
> + void (*update_crtcs)(struct drm_atomic_state *state);
> void (*audio_codec_enable)(struct drm_connector *connector,
> struct intel_encoder *encoder,
> const struct drm_display_mode *adjusted_mode);
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 216cd9e0e08f..a6cf1c20c712 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -12136,73 +12136,10 @@ u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
> return dev->driver->get_vblank_counter(dev, crtc->pipe);
> }
>
> -static void intel_atomic_wait_for_vblanks(struct drm_device *dev,
> - struct drm_i915_private *dev_priv,
> - unsigned crtc_mask)
> -{
> - unsigned last_vblank_count[I915_MAX_PIPES];
> - enum pipe pipe;
> - int ret;
> -
> - if (!crtc_mask)
> - return;
> -
> - for_each_pipe(dev_priv, pipe) {
> - struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv,
> - pipe);
> -
> - if (!((1 << pipe) & crtc_mask))
> - continue;
> -
> - ret = drm_crtc_vblank_get(&crtc->base);
> - if (WARN_ON(ret != 0)) {
> - crtc_mask &= ~(1 << pipe);
> - continue;
> - }
> -
> - last_vblank_count[pipe] = drm_crtc_vblank_count(&crtc->base);
> - }
> -
> - for_each_pipe(dev_priv, pipe) {
> - struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv,
> - pipe);
> - long lret;
> -
> - if (!((1 << pipe) & crtc_mask))
> - continue;
> -
> - lret = wait_event_timeout(dev->vblank[pipe].queue,
> - last_vblank_count[pipe] !=
> - drm_crtc_vblank_count(&crtc->base),
> - msecs_to_jiffies(50));
> -
> - WARN(!lret, "pipe %c vblank wait timed out\n", pipe_name(pipe));
> -
> - drm_crtc_vblank_put(&crtc->base);
> - }
> -}
> -
> -static bool needs_vblank_wait(struct intel_crtc_state *crtc_state)
> -{
> - /* fb updated, need to unpin old fb */
> - if (crtc_state->fb_changed)
> - return true;
> -
> - /* wm changes, need vblank before final wm's */
> - if (crtc_state->update_wm_post)
> - return true;
> -
> - if (crtc_state->wm.need_postvbl_update)
> - return true;
> -
> - return false;
> -}
> -
> static void intel_update_crtc(struct drm_crtc *crtc,
> struct drm_atomic_state *state,
> struct drm_crtc_state *old_crtc_state,
> - struct drm_crtc_state *new_crtc_state,
> - unsigned int *crtc_vblank_mask)
> + struct drm_crtc_state *new_crtc_state)
> {
> struct drm_device *dev = crtc->dev;
> struct drm_i915_private *dev_priv = to_i915(dev);
> @@ -12225,13 +12162,9 @@ static void intel_update_crtc(struct drm_crtc *crtc,
> }
>
> drm_atomic_helper_commit_planes_on_crtc(old_crtc_state);
> -
> - if (needs_vblank_wait(pipe_config))
> - *crtc_vblank_mask |= drm_crtc_mask(crtc);
> }
>
> -static void intel_update_crtcs(struct drm_atomic_state *state,
> - unsigned int *crtc_vblank_mask)
> +static void intel_update_crtcs(struct drm_atomic_state *state)
> {
> struct drm_crtc *crtc;
> struct drm_crtc_state *old_crtc_state, *new_crtc_state;
> @@ -12242,12 +12175,11 @@ static void intel_update_crtcs(struct drm_atomic_state *state,
> continue;
>
> intel_update_crtc(crtc, state, old_crtc_state,
> - new_crtc_state, crtc_vblank_mask);
> + new_crtc_state);
> }
> }
>
> -static void skl_update_crtcs(struct drm_atomic_state *state,
> - unsigned int *crtc_vblank_mask)
> +static void skl_update_crtcs(struct drm_atomic_state *state)
> {
> struct drm_i915_private *dev_priv = to_i915(state->dev);
> struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
> @@ -12306,7 +12238,7 @@ static void skl_update_crtcs(struct drm_atomic_state *state,
> vbl_wait = true;
>
> intel_update_crtc(crtc, state, old_crtc_state,
> - new_crtc_state, crtc_vblank_mask);
> + new_crtc_state);
>
> if (vbl_wait)
> intel_wait_for_vblank(dev_priv, pipe);
> @@ -12368,7 +12300,6 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
> struct intel_crtc_state *intel_cstate;
> bool hw_check = intel_state->modeset;
> u64 put_domains[I915_MAX_PIPES] = {};
> - unsigned crtc_vblank_mask = 0;
> int i;
>
> intel_atomic_commit_fence_wait(intel_state);
> @@ -12458,7 +12389,7 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
> }
>
> /* Now enable the clocks, plane, pipe, and connectors that we set up. */
> - dev_priv->display.update_crtcs(state, &crtc_vblank_mask);
> + dev_priv->display.update_crtcs(state);
>
> /* FIXME: We should call drm_atomic_helper_commit_hw_done() here
> * already, but still need the state for the delayed optimization. To
> @@ -12469,8 +12400,7 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
> * - switch over to the vblank wait helper in the core after that since
> * we don't need out special handling any more.
> */
> - if (!state->legacy_cursor_update)
> - intel_atomic_wait_for_vblanks(dev, dev_priv, crtc_vblank_mask);
> + drm_atomic_helper_wait_for_flip_done(dev, state);
Superflous if dropped, I'm happy.
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>
> /*
> * Now that the vblank has passed, we can go ahead and program the
> --
> 2.11.0
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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