diff options
| author |   Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-02-14 12:55:31 +0200 |
|---|---|---|
| committer |   Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2022-03-08 08:35:11 +0200 |
| commit | 5c8107dc9a9f33a88a380aea79be564597d00663 (patch) | |
| tree | 964682af59ab07e511d46da278a465fa8891c44f /drivers/gpu/drm/i915/display/intel_atomic_plane.c | |
| parent | drm/i915: Check async flip capability early on (diff) | |
| download | linux-dev-5c8107dc9a9f33a88a380aea79be564597d00663.tar.xz linux-dev-5c8107dc9a9f33a88a380aea79be564597d00663.zip | |
drm/i915: Fix the async flip wm0/ddb optimization
The current implementation of the async flip wm0/ddb optimization
does not work at all. The biggest problem is that we skip the
whole intel_pipe_update_{start,end}() dance and thus never actually
complete the commit that is trying to do the wm/ddb change.
To fix this we need to move the do_async_flip flag to the crtc
state since we handle commits per-pipe, not per-plane.
Also since all planes can now be included in the first/last
"async flip" (which gets converted to a sync flip to do the
wm/ddb mangling) we need to be more careful when checking if
the plane state is async flip comptatible. Only planes doing
the async flip should be checked and other planes are perfectly
fine not adhereing to any async flip related limitations.
However for subsequent commits which are actually going do the
async flip in hardware we want to make sure no other planes
are in the state. That should never happen assuming we did our
job correctly, so we'll toss in a WARN to make sure we catch
any bugs here.
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Fixes: c3639f3be480 ("drm/i915: Use wm0 only during async flips for DG2")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220214105532.13049-4-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
(cherry picked from commit 2e08437160d1e8f2cd3f0d56d59e74423602116e)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_atomic_plane.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_atomic_plane.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c index c53aa6a4c7a0..5712688232fb 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c @@ -110,7 +110,6 @@ intel_plane_duplicate_state(struct drm_plane *plane) intel_state->ggtt_vma = NULL; intel_state->dpt_vma = NULL; intel_state->flags = 0; - intel_state->do_async_flip = false; /* add reference to fb */ if (intel_state->hw.fb) @@ -506,7 +505,7 @@ static int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_cr new_crtc_state->disable_lp_wm = true; if (intel_plane_do_async_flip(plane, old_crtc_state, new_crtc_state)) - new_plane_state->do_async_flip = true; + new_crtc_state->do_async_flip = true; return 0; } @@ -678,7 +677,7 @@ void intel_plane_update_arm(struct intel_plane *plane, trace_intel_plane_update_arm(&plane->base, crtc); - if (plane_state->do_async_flip) + if (crtc_state->do_async_flip && plane->async_flip) plane->async_flip(plane, crtc_state, plane_state, true); else plane->update_arm(plane, crtc_state, plane_state); @@ -703,7 +702,7 @@ void intel_crtc_planes_update_noarm(struct intel_atomic_state *state, struct intel_plane *plane; int i; - if (new_crtc_state->uapi.async_flip) + if (new_crtc_state->do_async_flip) return; /* |