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drm/i915: Support Async Flip on Linear buffers

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Starting from Gen12 Async Flip is supported on linear buffers.
This patch enables support for async on linear buffer.

UseCase: In Hybrid graphics, for hardware unsupported pixel formats it
will be converted to linear memory and then composed.

v2: Added use case
v3: Added FIXME for ICL indicating the restrictions

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220906041806.4095575-1-arun.r.murthy@intel.com
This commit is contained in:
Arun R Murthy 2022-09-06 09:48:06 +05:30 committed by Animesh Manna
parent 861601ff7f
commit 937859485a
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/i915/display/intel_display.c
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@ -5995,6 +5995,20 @@ static int intel_async_flip_check_hw(struct intel_atomic_state *state, struct in
* this selectively if required. * this selectively if required.
*/ */
switch (new_plane_state->hw.fb->modifier) { switch (new_plane_state->hw.fb->modifier) {
case DRM_FORMAT_MOD_LINEAR:
/*
* FIXME: Async on Linear buffer is supported on ICL as
* but with additional alignment and fbc restrictions
* need to be taken care of. These aren't applicable for
* gen12+.
*/
if (DISPLAY_VER(i915) < 12) {
drm_dbg_kms(&i915->drm,
"[PLANE:%d:%s] Modifier does not support async flips\n",
plane->base.base.id, plane->base.name);
return -EINVAL;
}
case I915_FORMAT_MOD_X_TILED: case I915_FORMAT_MOD_X_TILED:
case I915_FORMAT_MOD_Y_TILED: case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED: case I915_FORMAT_MOD_Yf_TILED: