On Fri, Mar 28, 2025 at 09:26:24PM +0530, Arun R Murthy wrote:
> Async flip is not supported with Indexed 8 bit format as it depends on
> LUT and can't be updated atomically.
We should again highlight that this may change the alignment for
C8 framebuffers on some platforms.
>
> Signed-off-by: Arun R Murthy <arun.r.mur...@intel.com>
> Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_atomic_plane.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> index
> 3b9d3e1620cd882b8a7f9b4c96640e42367248bb..1bcfa5f4fd63442b632655ccaf325a87be78fe21
> 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
> @@ -177,7 +177,8 @@ bool intel_plane_needs_physical(struct intel_plane *plane)
> bool intel_plane_can_async_flip(struct intel_plane *plane, u32 format,
> u64 modifier)
> {
> - if (intel_format_info_is_yuv_semiplanar(drm_format_info(format),
> modifier))
> + if (intel_format_info_is_yuv_semiplanar(drm_format_info(format),
> modifier) ||
> + format == DRM_FORMAT_C8)
> return false;
>
> return plane->can_async_flip && plane->can_async_flip(modifier);
>
> --
> 2.25.1
--
Ville Syrjälä
Intel
