From 6d90a208cfff94c519caaecbc5da3af3929bf374 Mon Sep 17 00:00:00 2001 From: Aurabindo Pillai Date: Fri, 11 Sep 2020 15:10:11 -0400 Subject: [PATCH] drm/amd/display: Move disable interrupt into commit tail [Why&How] Since there is no need for accessing crtc state in the interrupt handler, interrupts need not be disabled well in advance, and can be moved to commit_tail where it should be. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Aurabindo Pillai Signed-off-by: Alex Deucher --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 47 ++++++------------- 1 file changed, 14 insertions(+), 33 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index b044fab05a2f..7ad2c3f7e281 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7437,39 +7437,6 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state, bool nonblock) { - struct drm_crtc *crtc; - struct drm_crtc_state *old_crtc_state, *new_crtc_state; - struct dm_crtc_state *dm_old_crtc_state; - struct amdgpu_device *adev = drm_to_adev(dev); - int i; - - /* - * We evade vblank and pflip interrupts on CRTCs that are undergoing - * a modeset, being disabled, or have no active planes. - * - * It's done in atomic commit rather than commit tail for now since - * some of these interrupt handlers access the current CRTC state and - * potentially the stream pointer itself. - * - * Since the atomic state is swapped within atomic commit and not within - * commit tail this would leave to new state (that hasn't been committed yet) - * being accesssed from within the handlers. - * - * TODO: Fix this so we can do this in commit tail and not have to block - * in atomic check. - */ - for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { - struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); - - dm_old_crtc_state = to_dm_crtc_state(old_crtc_state); - - if (old_crtc_state->active && - (!new_crtc_state->active || - drm_atomic_crtc_needs_modeset(new_crtc_state))) { - manage_dm_interrupts(adev, acrtc, false); - dc_stream_release(dm_old_crtc_state->stream); - } - } /* * Add check here for SoC's that support hardware cursor plane, to * unset legacy_cursor_update @@ -7519,6 +7486,20 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) dc_resource_state_copy_construct_current(dm->dc, dc_state); } + for_each_oldnew_crtc_in_state (state, crtc, old_crtc_state, + new_crtc_state, i) { + struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); + + dm_old_crtc_state = to_dm_crtc_state(old_crtc_state); + + if (old_crtc_state->active && + (!new_crtc_state->active || + drm_atomic_crtc_needs_modeset(new_crtc_state))) { + manage_dm_interrupts(adev, acrtc, false); + dc_stream_release(dm_old_crtc_state->stream); + } + } + /* update changed items */ for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);