diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_atomic.c')
-rw-r--r-- | drivers/gpu/drm/msm/msm_atomic.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index 30b5d23e53b4..6924fa28f04f 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -151,20 +151,29 @@ static void commit_worker(struct work_struct *work) complete_commit(container_of(work, struct msm_commit, work), true); } +/* + * this func is identical to the drm_atomic_helper_check, but we keep this + * because we might eventually need to have a more finegrained check + * sequence without using the atomic helpers. + * + * In the past, we first called drm_atomic_helper_check_planes, and then + * drm_atomic_helper_check_modeset. We needed this because the MDP5 plane's + * ->atomic_check could update ->mode_changed for pixel format changes. + * This, however isn't needed now because if there is a pixel format change, + * we just assign a new hwpipe for it with a new SMP allocation. We might + * eventually hit a condition where we would need to do a full modeset if + * we run out of planes. There, we'd probably need to set mode_changed. + */ int msm_atomic_check(struct drm_device *dev, struct drm_atomic_state *state) { int ret; - /* - * msm ->atomic_check can update ->mode_changed for pixel format - * changes, hence must be run before we check the modeset changes. - */ - ret = drm_atomic_helper_check_planes(dev, state); + ret = drm_atomic_helper_check_modeset(dev, state); if (ret) return ret; - ret = drm_atomic_helper_check_modeset(dev, state); + ret = drm_atomic_helper_check_planes(dev, state); if (ret) return ret; |