diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_atomic.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_atomic.c | 139 |
1 files changed, 1 insertions, 138 deletions
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index 95c7868445dd..f0635c3da7f4 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -18,8 +18,6 @@ #include "msm_drv.h" #include "msm_gem.h" #include "msm_kms.h" -#include "msm_gem.h" -#include "msm_fence.h" static void msm_atomic_wait_for_commit_done(struct drm_device *dev, struct drm_atomic_state *old_state) @@ -59,7 +57,7 @@ int msm_atomic_prepare_fb(struct drm_plane *plane, return msm_framebuffer_prepare(new_state->fb, kms->aspace); } -static void msm_atomic_commit_tail(struct drm_atomic_state *state) +void msm_atomic_commit_tail(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; struct msm_drm_private *priv = dev->dev_private; @@ -73,19 +71,6 @@ static void msm_atomic_commit_tail(struct drm_atomic_state *state) drm_atomic_helper_commit_modeset_enables(dev, state); - /* NOTE: _wait_for_vblanks() only waits for vblank on - * enabled CRTCs. So we end up faulting when disabling - * due to (potentially) unref'ing the outgoing fb's - * before the vblank when the disable has latched. - * - * But if it did wait on disabled (or newly disabled) - * CRTCs, that would be racy (ie. we could have missed - * the irq. We need some way to poll for pipe shut - * down. Or just live with occasionally hitting the - * timeout in the CRTC disable path (which really should - * not be critical path) - */ - msm_atomic_wait_for_commit_done(dev, state); kms->funcs->complete_commit(kms, state); @@ -96,125 +81,3 @@ static void msm_atomic_commit_tail(struct drm_atomic_state *state) drm_atomic_helper_cleanup_planes(dev, state); } - -/* The (potentially) asynchronous part of the commit. At this point - * nothing can fail short of armageddon. - */ -static void commit_tail(struct drm_atomic_state *state) -{ - drm_atomic_helper_wait_for_fences(state->dev, state, false); - - drm_atomic_helper_wait_for_dependencies(state); - - msm_atomic_commit_tail(state); - - drm_atomic_helper_commit_cleanup_done(state); - - drm_atomic_state_put(state); -} - -static void commit_work(struct work_struct *work) -{ - struct drm_atomic_state *state = container_of(work, - struct drm_atomic_state, - commit_work); - commit_tail(state); -} - -/** - * drm_atomic_helper_commit - commit validated state object - * @dev: DRM device - * @state: the driver state object - * @nonblock: nonblocking commit - * - * This function commits a with drm_atomic_helper_check() pre-validated state - * object. This can still fail when e.g. the framebuffer reservation fails. - * - * RETURNS - * Zero for success or -errno. - */ -int msm_atomic_commit(struct drm_device *dev, - struct drm_atomic_state *state, bool nonblock) -{ - struct msm_drm_private *priv = dev->dev_private; - struct drm_crtc *crtc; - struct drm_crtc_state *crtc_state; - struct drm_plane *plane; - struct drm_plane_state *old_plane_state, *new_plane_state; - int i, ret; - - /* - * Note that plane->atomic_async_check() should fail if we need - * to re-assign hwpipe or anything that touches global atomic - * state, so we'll never go down the async update path in those - * cases. - */ - if (state->async_update) { - ret = drm_atomic_helper_prepare_planes(dev, state); - if (ret) - return ret; - - drm_atomic_helper_async_commit(dev, state); - drm_atomic_helper_cleanup_planes(dev, state); - return 0; - } - - ret = drm_atomic_helper_setup_commit(state, nonblock); - if (ret) - return ret; - - INIT_WORK(&state->commit_work, commit_work); - - ret = drm_atomic_helper_prepare_planes(dev, state); - if (ret) - return ret; - - if (!nonblock) { - ret = drm_atomic_helper_wait_for_fences(dev, state, true); - if (ret) - goto error; - } - - /* - * This is the point of no return - everything below never fails except - * when the hw goes bonghits. Which means we can commit the new state on - * the software side now. - * - * swap driver private state while still holding state_lock - */ - BUG_ON(drm_atomic_helper_swap_state(state, true) < 0); - - /* - * This is the point of no return - everything below never fails except - * when the hw goes bonghits. Which means we can commit the new state on - * the software side now. - */ - - /* - * Everything below can be run asynchronously without the need to grab - * any modeset locks at all under one conditions: It must be guaranteed - * that the asynchronous work has either been cancelled (if the driver - * supports it, which at least requires that the framebuffers get - * cleaned up with drm_atomic_helper_cleanup_planes()) or completed - * before the new state gets committed on the software side with - * drm_atomic_helper_swap_state(). - * - * This scheme allows new atomic state updates to be prepared and - * checked in parallel to the asynchronous completion of the previous - * update. Which is important since compositors need to figure out the - * composition of the next frame right after having submitted the - * current layout. - */ - - drm_atomic_state_get(state); - if (nonblock) - queue_work(system_unbound_wq, &state->commit_work); - else - commit_tail(state); - - return 0; - -error: - drm_atomic_helper_cleanup_planes(dev, state); - return ret; -} |