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drm/i915: Eliminate one more frequent drm_format_info()

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Another (somewhat expensive) drm_format_info() call has
appeared in intel_plane_can_async_flip(). That one may get
called several times per commit so we need to get rid of
it.

Fortunately most callers already have the framebuffer at
hand, so we can just grab the format info from there.
The one exception is intel_plane_format_mod_supported_async()
where we have to do the lookup. But that only gets called
(a bunch of times) during driver init to build the
IN_FORMATS_ASYNC blob, and afterwards there is no runtime
cost.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251112233030.24117-4-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
This commit is contained in:
Ville Syrjälä
2025-11-13 01:30:30 +02:00
parent 8afc0198a4
commit 0646d0dd66
5 changed files with 20 additions and 14 deletions
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2
drivers/gpu/drm/i915/display/intel_display.c
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@@ -6115,7 +6115,7 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in
if (!plane->async_flip)
continue;
if (!intel_plane_can_async_flip(plane, new_plane_state->hw.fb->format->format,
if (!intel_plane_can_async_flip(plane, new_plane_state->hw.fb->format,
new_plane_state->hw.fb->modifier)) {
drm_dbg_kms(display->drm,
"[PLANE:%d:%s] pixel format %p4cc / modifier 0x%llx does not support async flip\n",