diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-27 00:18:40 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-27 16:45:31 +0300 |
| commit | 4218a32f55fc71983e4c1c6e5b98b28db8226b3b (patch) | |
| tree | 0f463cb777b0e4f7c50a5897376a8322ddd4dfc6 /drivers/gpu/drm/drm_atomic_helper.c | |
| parent | 27798365a60eaa61d8d9010466ffd57368b98ba9 (diff) | |
| download | linux-4218a32f55fc71983e4c1c6e5b98b28db8226b3b.tar.xz | |
drm/atomic-helpers: Properly avoid full modeset dance
Legacy setCrtc has a nice fastpath for just updating the frontbuffer
when the output routing doesn't change. Which I of course tried to
keep working, except that I fumbled the job: The helpers correctly
compute ->mode_changed, CRTC updates get correctly skipped but
connector functions are called unconditionally.
Fix this.
v2: For the disable sided connector->state->crtc might be NULL.
Instead look at the old_connector_state->crtc, but still use the new
crtc state for that old crtc. Reported by Thierry.
Reported-and-Tested-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> (v1)
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index d9ed9a54fd1e..e67d4d69faf7 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -587,7 +587,8 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state) old_crtc_state = old_state->crtc_states[drm_crtc_index(old_conn_state->crtc)]; - if (!old_crtc_state->active) + if (!old_crtc_state->active || + !needs_modeset(old_conn_state->crtc->state)) continue; encoder = old_conn_state->best_encoder; @@ -847,7 +848,8 @@ void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev, if (!connector || !connector->state->best_encoder) continue; - if (!connector->state->crtc->state->active) + if (!connector->state->crtc->state->active || + !needs_modeset(connector->state->crtc->state)) continue; encoder = connector->state->best_encoder; |