On Tue, Feb 13, 2024 at 12:18:16PM +0530, Uma Shankar wrote:
> Add capability property which a colorop can expose it's
> hardware's abilities. It's a blob property that can be
> filled with respective data structures depending on the
> colorop. The user space is expected to read this property
> and program the colorop accordingly.
>
> Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@xxxxxxxxx>
> ---
> drivers/gpu/drm/drm_atomic_uapi.c | 3 +++
> include/drm/drm_colorop.h | 13 +++++++++++++
> 2 files changed, 16 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> index 9f6a3a1c8020..95f1df73209c 100644
> --- a/drivers/gpu/drm/drm_atomic_uapi.c
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -770,6 +770,9 @@ drm_atomic_colorop_get_property(struct drm_colorop *colorop,
> *val = state->curve_1d_type;
> } else if (property == colorop->data_property) {
> *val = (state->data) ? state->data->base.id : 0;
> + } else if (property == colorop->hw_caps_property) {
> + *val = state->hw_caps ?
> + state->hw_caps->base.id : 0;
> } else {
> return -EINVAL;
> }
> diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
> index 5b8c36538491..f417e109c40a 100644
> --- a/include/drm/drm_colorop.h
> +++ b/include/drm/drm_colorop.h
> @@ -59,6 +59,12 @@ struct drm_colorop_state {
> */
> enum drm_colorop_curve_1d_type curve_1d_type;
>
> + /**
> + * @hw_caps:
> + *
> + */
> + struct drm_property_blob *hw_caps;
> +
Is this supposed to be generic for any colorop or specifically for
DRM_COLOROP_1D_LUT?
> /**
> * @data:
> *
> @@ -167,6 +173,13 @@ struct drm_colorop {
> */
> struct drm_property *bypass_property;
>
> + /**
> + * @hwlut_caps_property:
> + *
> + * Property to expose hardware lut capbilities.
> + */
> + struct drm_property *hw_caps_property;
> +
> /**
> * @curve_1d_type:
> *
> --
> 2.42.0
>
