On Thu, Dec 15, 2016 at 12:51:42PM +0100, Maarten Lankhorst wrote:
> Stop relying on a per crtc_state last_vblank_count, we shouldn't touch
> crtc_state after commit. Move it to atomic_state->crtcs.
>
> Also stop re-using new_crtc_state->enable, we can now simply set a
> bitmask with crtc_crtc_mask.
>
> Changes since v1:
> - Keep last_vblank_count in __drm_crtc_state.
Just noticed: sob is missing.
With that fixed Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c
> b/drivers/gpu/drm/drm_atomic_helper.c
> index d19563651e07..88c0986d226a 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -1110,19 +1110,19 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device
> *dev,
> struct drm_crtc *crtc;
> struct drm_crtc_state *old_crtc_state;
> int i, ret;
> + unsigned crtc_mask = 0;
>
> - for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
> - /* No one cares about the old state, so abuse it for tracking
> - * and store whether we hold a vblank reference (and should do a
> - * vblank wait) in the ->enable boolean. */
> - old_crtc_state->enable = false;
> + /*
> + * Legacy cursor ioctls are completely unsynced, and userspace
> + * relies on that (by doing tons of cursor updates).
> + */
> + if (old_state->legacy_cursor_update)
> + return;
>
> - if (!crtc->state->active)
> - continue;
> + for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
> + struct drm_crtc_state *new_crtc_state = crtc->state;
>
> - /* Legacy cursor ioctls are completely unsynced, and userspace
> - * relies on that (by doing tons of cursor updates). */
> - if (old_state->legacy_cursor_update)
> + if (!new_crtc_state->active)
> continue;
>
> if (!drm_atomic_helper_framebuffer_changed(dev,
> @@ -1133,16 +1133,16 @@ drm_atomic_helper_wait_for_vblanks(struct drm_device
> *dev,
> if (ret != 0)
> continue;
>
> - old_crtc_state->enable = true;
> - old_crtc_state->last_vblank_count = drm_crtc_vblank_count(crtc);
> + crtc_mask |= drm_crtc_mask(crtc);
> + old_state->crtcs[i].last_vblank_count =
> drm_crtc_vblank_count(crtc);
> }
>
> for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
> - if (!old_crtc_state->enable)
> + if (!(crtc_mask & drm_crtc_mask(crtc)))
> continue;
>
> ret = wait_event_timeout(dev->vblank[i].queue,
> - old_crtc_state->last_vblank_count !=
> + old_state->crtcs[i].last_vblank_count !=
> drm_crtc_vblank_count(crtc),
> msecs_to_jiffies(50));
>
> diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> index d6d241f63b9f..617f095e31ba 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -145,6 +145,7 @@ struct __drm_crtcs_state {
> struct drm_crtc_state *state;
> struct drm_crtc_commit *commit;
> s64 __user *out_fence_ptr;
> + unsigned last_vblank_count;
> };
>
> struct __drm_connnectors_state {
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 946672f97e1e..e03d194be086 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -93,8 +93,6 @@ struct drm_plane_helper_funcs;
> * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes
> * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of
> attached connectors
> * @encoder_mask: bitmask of (1 << drm_encoder_index(encoder)) of attached
> encoders
> - * @last_vblank_count: for helpers and drivers to capture the vblank of the
> - * update to ensure framebuffer cleanup isn't done too early
> * @adjusted_mode: for use by helpers and drivers to compute adjusted mode
> timings
> * @mode: current mode timings
> * @mode_blob: &drm_property_blob for @mode
> @@ -140,9 +138,6 @@ struct drm_crtc_state {
> u32 connector_mask;
> u32 encoder_mask;
>
> - /* last_vblank_count: for vblank waits before cleanup */
> - u32 last_vblank_count;
> -
> /* adjusted_mode: for use by helpers and drivers */
> struct drm_display_mode adjusted_mode;
>
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
