On 2025-09-17 20:43, Nícolas F. R. A. Prado wrote:
> Pass the state of the post-blend color pipeline client cap to the atomic
> state so that drivers can rely on it to enable color pipeline
> functionality and ignore the deprecated color management CRTC
> properties.
>
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
> ---
> drivers/gpu/drm/drm_atomic_uapi.c | 1 +
> include/drm/drm_atomic.h | 20 ++++++++++++++++++++
> 2 files changed, 21 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> index f5125fa3fa28ff2a6ff07fd7cf07d4bdf77ab738..56a440a9390c7730c4c41b491f29b933a2bbb889 100644
> --- a/drivers/gpu/drm/drm_atomic_uapi.c
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -1660,6 +1660,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
> state->acquire_ctx = &ctx;
> state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
> state->plane_color_pipeline = file_priv->plane_color_pipeline;
> + state->post_blend_color_pipeline = file_priv->post_blend_color_pipeline;
>
> retry:
> copied_objs = 0;
> diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> index 678708df9cdb90b4266127193a92183069f18688..8c42c584aefbf0034b2163d90538e80099b0dadb 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -482,6 +482,26 @@ struct drm_atomic_state {
> */
> bool plane_color_pipeline : 1;
>
> + /**
> + * @post_blend_color_pipeline:
> + *
> + * Indicates whether this atomic state originated with a client that
> + * set the DRM_CLIENT_CAP_POST_BLEND_COLOR_PIPELINE.
> + *
> + * Drivers and helper functions should use this to ignore legacy
> + * properties that are incompatible with the drm_crtc COLOR_PIPELINE
> + * behavior, such as:
> + *
> + * - GAMMA_LUT
> + * - DEGAMMA_LUT
> + * - GAMMA_LUT_SIZE
> + * - CTM
> + *
> + * or any other driver-specific properties that might affect pixel
> + * values.
> + */
> + bool post_blend_color_pipeline : 1;
As with the client cap name, I recommend calling this
crtc_color_pipeline.
Harry
> +
> /**
> * @colorops:
> *
>