Plane CTM for pre-blending color space conversion. Only enable
driver-specific plane CTM property on drivers that support both pre- and
post-blending gamut remap matrix, i.e., DCN3+ family. Otherwise it
conflits with DRM CRTC CTM property.

Signed-off-by: Melissa Wen <mwen@igalia.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |  2 ++
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  7 +++++++
 .../amd/display/amdgpu_dm/amdgpu_dm_color.c   |  7 +++++++
 .../amd/display/amdgpu_dm/amdgpu_dm_plane.c   | 20 +++++++++++++++++++
 4 files changed, 36 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index abb871a912d7..84bf501b02f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -363,6 +363,8 @@ struct amdgpu_mode_info {
 	 * @plane_hdr_mult_property:
 	 */
 	struct drm_property *plane_hdr_mult_property;
+
+	struct drm_property *plane_ctm_property;
 	/**
 	 * @shaper_lut_property: Plane property to set pre-blending shaper LUT
 	 * that converts color content before 3D LUT.
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 095f39f04210..6252ee912a63 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -769,6 +769,13 @@ struct dm_plane_state {
 	 * S31.32 sign-magnitude.
 	 */
 	__u64 hdr_mult;
+	/**
+	 * @ctm:
+	 *
+	 * Color transformation matrix. See drm_crtc_enable_color_mgmt(). The
+	 * blob (if not NULL) is a &struct drm_color_ctm.
+	 */
+	struct drm_property_blob *ctm;
 	/**
 	 * @shaper_lut: shaper lookup table blob. The blob (if not NULL) is an
 	 * array of &struct drm_color_lut.
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
index 4356846a2bce..86a918ab82be 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
@@ -218,6 +218,13 @@ amdgpu_dm_create_color_properties(struct amdgpu_device *adev)
 		return -ENOMEM;
 	adev->mode_info.plane_hdr_mult_property = prop;
 
+	prop = drm_property_create(adev_to_drm(adev),
+				   DRM_MODE_PROP_BLOB,
+				   "AMD_PLANE_CTM", 0);
+	if (!prop)
+		return -ENOMEM;
+	adev->mode_info.plane_ctm_property = prop;
+
 	prop = drm_property_create(adev_to_drm(adev),
 				   DRM_MODE_PROP_BLOB,
 				   "AMD_PLANE_SHAPER_LUT", 0);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index 3fd57de7c5be..0b1081c690cb 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
@@ -1355,6 +1355,8 @@ dm_drm_plane_duplicate_state(struct drm_plane *plane)
 
 	if (dm_plane_state->degamma_lut)
 		drm_property_blob_get(dm_plane_state->degamma_lut);
+	if (dm_plane_state->ctm)
+		drm_property_blob_get(dm_plane_state->ctm);
 	if (dm_plane_state->shaper_lut)
 		drm_property_blob_get(dm_plane_state->shaper_lut);
 	if (dm_plane_state->lut3d)
@@ -1436,6 +1438,8 @@ static void dm_drm_plane_destroy_state(struct drm_plane *plane,
 
 	if (dm_plane_state->degamma_lut)
 		drm_property_blob_put(dm_plane_state->degamma_lut);
+	if (dm_plane_state->ctm)
+		drm_property_blob_put(dm_plane_state->ctm);
 	if (dm_plane_state->lut3d)
 		drm_property_blob_put(dm_plane_state->lut3d);
 	if (dm_plane_state->shaper_lut)
@@ -1473,6 +1477,11 @@ dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
 				   dm->adev->mode_info.plane_hdr_mult_property,
 				   AMDGPU_HDR_MULT_DEFAULT);
 
+	/* Only enable plane CTM if both DPP and MPC gamut remap is available. */
+	if (dm->dc->caps.color.mpc.gamut_remap)
+		drm_object_attach_property(&plane->base,
+					   dm->adev->mode_info.plane_ctm_property, 0);
+
 	if (dpp_color_caps.hw_3d_lut) {
 		drm_object_attach_property(&plane->base,
 					   mode_info.plane_shaper_lut_property, 0);
@@ -1530,6 +1539,14 @@ dm_atomic_plane_set_property(struct drm_plane *plane,
 			dm_plane_state->hdr_mult = val;
 			dm_plane_state->base.color_mgmt_changed = 1;
 		}
+	} else if (property == adev->mode_info.plane_ctm_property) {
+		ret = drm_property_replace_blob_from_id(plane->dev,
+							&dm_plane_state->ctm,
+							val,
+							sizeof(struct drm_color_ctm), -1,
+							&replaced);
+		dm_plane_state->base.color_mgmt_changed |= replaced;
+		return ret;
 	} else if (property == adev->mode_info.plane_shaper_lut_property) {
 		ret = drm_property_replace_blob_from_id(plane->dev,
 							&dm_plane_state->shaper_lut,
@@ -1591,6 +1608,9 @@ dm_atomic_plane_get_property(struct drm_plane *plane,
 		*val = dm_plane_state->degamma_tf;
 	} else if (property == adev->mode_info.plane_hdr_mult_property) {
 		*val = dm_plane_state->hdr_mult;
+	} else if (property == adev->mode_info.plane_ctm_property) {
+		*val = (dm_plane_state->ctm) ?
+			dm_plane_state->ctm->base.id : 0;
 	} else 	if (property == adev->mode_info.plane_shaper_lut_property) {
 		*val = (dm_plane_state->shaper_lut) ?
 			dm_plane_state->shaper_lut->base.id : 0;
-- 
2.40.1

On 2023-08-10 12:03, Melissa Wen wrote:
> Plane CTM for pre-blending color space conversion. Only enable
> driver-specific plane CTM property on drivers that support both pre- and
> post-blending gamut remap matrix, i.e., DCN3+ family. Otherwise it
> conflits with DRM CRTC CTM property.
> 
> Signed-off-by: Melissa Wen <mwen@igalia.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |  2 ++
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  7 +++++++
>  .../amd/display/amdgpu_dm/amdgpu_dm_color.c   |  7 +++++++
>  .../amd/display/amdgpu_dm/amdgpu_dm_plane.c   | 20 +++++++++++++++++++
>  4 files changed, 36 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> index abb871a912d7..84bf501b02f4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> @@ -363,6 +363,8 @@ struct amdgpu_mode_info {
>  	 * @plane_hdr_mult_property:
>  	 */
>  	struct drm_property *plane_hdr_mult_property;
> +
> +	struct drm_property *plane_ctm_property;
>  	/**
>  	 * @shaper_lut_property: Plane property to set pre-blending shaper LUT
>  	 * that converts color content before 3D LUT.
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> index 095f39f04210..6252ee912a63 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> @@ -769,6 +769,13 @@ struct dm_plane_state {
>  	 * S31.32 sign-magnitude.
>  	 */
>  	__u64 hdr_mult;
> +	/**
> +	 * @ctm:
> +	 *
> +	 * Color transformation matrix. See drm_crtc_enable_color_mgmt(). The
> +	 * blob (if not NULL) is a &struct drm_color_ctm.
> +	 */
> +	struct drm_property_blob *ctm;
>  	/**
>  	 * @shaper_lut: shaper lookup table blob. The blob (if not NULL) is an
>  	 * array of &struct drm_color_lut.
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
> index 4356846a2bce..86a918ab82be 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
> @@ -218,6 +218,13 @@ amdgpu_dm_create_color_properties(struct amdgpu_device *adev)
>  		return -ENOMEM;
>  	adev->mode_info.plane_hdr_mult_property = prop;
>  
> +	prop = drm_property_create(adev_to_drm(adev),
> +				   DRM_MODE_PROP_BLOB,
> +				   "AMD_PLANE_CTM", 0);

We'll want to wrap the property creation/attachment with
#ifdef AMD_PRIVATE_COLOR here as well.

Harry

> +	if (!prop)
> +		return -ENOMEM;
> +	adev->mode_info.plane_ctm_property = prop;
> +
>  	prop = drm_property_create(adev_to_drm(adev),
>  				   DRM_MODE_PROP_BLOB,
>  				   "AMD_PLANE_SHAPER_LUT", 0);
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> index 3fd57de7c5be..0b1081c690cb 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> @@ -1355,6 +1355,8 @@ dm_drm_plane_duplicate_state(struct drm_plane *plane)
>  
>  	if (dm_plane_state->degamma_lut)
>  		drm_property_blob_get(dm_plane_state->degamma_lut);
> +	if (dm_plane_state->ctm)
> +		drm_property_blob_get(dm_plane_state->ctm);
>  	if (dm_plane_state->shaper_lut)
>  		drm_property_blob_get(dm_plane_state->shaper_lut);
>  	if (dm_plane_state->lut3d)
> @@ -1436,6 +1438,8 @@ static void dm_drm_plane_destroy_state(struct drm_plane *plane,
>  
>  	if (dm_plane_state->degamma_lut)
>  		drm_property_blob_put(dm_plane_state->degamma_lut);
> +	if (dm_plane_state->ctm)
> +		drm_property_blob_put(dm_plane_state->ctm);
>  	if (dm_plane_state->lut3d)
>  		drm_property_blob_put(dm_plane_state->lut3d);
>  	if (dm_plane_state->shaper_lut)
> @@ -1473,6 +1477,11 @@ dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
>  				   dm->adev->mode_info.plane_hdr_mult_property,
>  				   AMDGPU_HDR_MULT_DEFAULT);
>  
> +	/* Only enable plane CTM if both DPP and MPC gamut remap is available. */
> +	if (dm->dc->caps.color.mpc.gamut_remap)
> +		drm_object_attach_property(&plane->base,
> +					   dm->adev->mode_info.plane_ctm_property, 0);
> +
>  	if (dpp_color_caps.hw_3d_lut) {
>  		drm_object_attach_property(&plane->base,
>  					   mode_info.plane_shaper_lut_property, 0);
> @@ -1530,6 +1539,14 @@ dm_atomic_plane_set_property(struct drm_plane *plane,
>  			dm_plane_state->hdr_mult = val;
>  			dm_plane_state->base.color_mgmt_changed = 1;
>  		}
> +	} else if (property == adev->mode_info.plane_ctm_property) {
> +		ret = drm_property_replace_blob_from_id(plane->dev,
> +							&dm_plane_state->ctm,
> +							val,
> +							sizeof(struct drm_color_ctm), -1,
> +							&replaced);
> +		dm_plane_state->base.color_mgmt_changed |= replaced;
> +		return ret;
>  	} else if (property == adev->mode_info.plane_shaper_lut_property) {
>  		ret = drm_property_replace_blob_from_id(plane->dev,
>  							&dm_plane_state->shaper_lut,
> @@ -1591,6 +1608,9 @@ dm_atomic_plane_get_property(struct drm_plane *plane,
>  		*val = dm_plane_state->degamma_tf;
>  	} else if (property == adev->mode_info.plane_hdr_mult_property) {
>  		*val = dm_plane_state->hdr_mult;
> +	} else if (property == adev->mode_info.plane_ctm_property) {
> +		*val = (dm_plane_state->ctm) ?
> +			dm_plane_state->ctm->base.id : 0;
>  	} else 	if (property == adev->mode_info.plane_shaper_lut_property) {
>  		*val = (dm_plane_state->shaper_lut) ?
>  			dm_plane_state->shaper_lut->base.id : 0;

On 09/06, Harry Wentland wrote:
> 
> 
> On 2023-08-10 12:03, Melissa Wen wrote:
> > Plane CTM for pre-blending color space conversion. Only enable
> > driver-specific plane CTM property on drivers that support both pre- and
> > post-blending gamut remap matrix, i.e., DCN3+ family. Otherwise it
> > conflits with DRM CRTC CTM property.
> > 
> > Signed-off-by: Melissa Wen <mwen@igalia.com>
> > ---
> >  drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |  2 ++
> >  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  7 +++++++
> >  .../amd/display/amdgpu_dm/amdgpu_dm_color.c   |  7 +++++++
> >  .../amd/display/amdgpu_dm/amdgpu_dm_plane.c   | 20 +++++++++++++++++++
> >  4 files changed, 36 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> > index abb871a912d7..84bf501b02f4 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> > @@ -363,6 +363,8 @@ struct amdgpu_mode_info {
> >  	 * @plane_hdr_mult_property:
> >  	 */
> >  	struct drm_property *plane_hdr_mult_property;
> > +
> > +	struct drm_property *plane_ctm_property;
> >  	/**
> >  	 * @shaper_lut_property: Plane property to set pre-blending shaper LUT
> >  	 * that converts color content before 3D LUT.
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> > index 095f39f04210..6252ee912a63 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> > @@ -769,6 +769,13 @@ struct dm_plane_state {
> >  	 * S31.32 sign-magnitude.
> >  	 */
> >  	__u64 hdr_mult;
> > +	/**
> > +	 * @ctm:
> > +	 *
> > +	 * Color transformation matrix. See drm_crtc_enable_color_mgmt(). The
> > +	 * blob (if not NULL) is a &struct drm_color_ctm.
> > +	 */
> > +	struct drm_property_blob *ctm;
> >  	/**
> >  	 * @shaper_lut: shaper lookup table blob. The blob (if not NULL) is an
> >  	 * array of &struct drm_color_lut.
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
> > index 4356846a2bce..86a918ab82be 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
> > @@ -218,6 +218,13 @@ amdgpu_dm_create_color_properties(struct amdgpu_device *adev)
> >  		return -ENOMEM;
> >  	adev->mode_info.plane_hdr_mult_property = prop;
> >  
> > +	prop = drm_property_create(adev_to_drm(adev),
> > +				   DRM_MODE_PROP_BLOB,
> > +				   "AMD_PLANE_CTM", 0);
> 
> We'll want to wrap the property creation/attachment with
> #ifdef AMD_PRIVATE_COLOR here as well.

yeah, it's already wrapped because it's created and attached together
with the other properties.

> 
> Harry
> 
> > +	if (!prop)
> > +		return -ENOMEM;
> > +	adev->mode_info.plane_ctm_property = prop;
> > +
> >  	prop = drm_property_create(adev_to_drm(adev),
> >  				   DRM_MODE_PROP_BLOB,
> >  				   "AMD_PLANE_SHAPER_LUT", 0);
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> > index 3fd57de7c5be..0b1081c690cb 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> > @@ -1355,6 +1355,8 @@ dm_drm_plane_duplicate_state(struct drm_plane *plane)
> >  
> >  	if (dm_plane_state->degamma_lut)
> >  		drm_property_blob_get(dm_plane_state->degamma_lut);
> > +	if (dm_plane_state->ctm)
> > +		drm_property_blob_get(dm_plane_state->ctm);
> >  	if (dm_plane_state->shaper_lut)
> >  		drm_property_blob_get(dm_plane_state->shaper_lut);
> >  	if (dm_plane_state->lut3d)
> > @@ -1436,6 +1438,8 @@ static void dm_drm_plane_destroy_state(struct drm_plane *plane,
> >  
> >  	if (dm_plane_state->degamma_lut)
> >  		drm_property_blob_put(dm_plane_state->degamma_lut);
> > +	if (dm_plane_state->ctm)
> > +		drm_property_blob_put(dm_plane_state->ctm);
> >  	if (dm_plane_state->lut3d)
> >  		drm_property_blob_put(dm_plane_state->lut3d);
> >  	if (dm_plane_state->shaper_lut)
> > @@ -1473,6 +1477,11 @@ dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
> >  				   dm->adev->mode_info.plane_hdr_mult_property,
> >  				   AMDGPU_HDR_MULT_DEFAULT);
> >  
> > +	/* Only enable plane CTM if both DPP and MPC gamut remap is available. */
> > +	if (dm->dc->caps.color.mpc.gamut_remap)
> > +		drm_object_attach_property(&plane->base,
> > +					   dm->adev->mode_info.plane_ctm_property, 0);
> > +
> >  	if (dpp_color_caps.hw_3d_lut) {
> >  		drm_object_attach_property(&plane->base,
> >  					   mode_info.plane_shaper_lut_property, 0);
> > @@ -1530,6 +1539,14 @@ dm_atomic_plane_set_property(struct drm_plane *plane,
> >  			dm_plane_state->hdr_mult = val;
> >  			dm_plane_state->base.color_mgmt_changed = 1;
> >  		}
> > +	} else if (property == adev->mode_info.plane_ctm_property) {
> > +		ret = drm_property_replace_blob_from_id(plane->dev,
> > +							&dm_plane_state->ctm,
> > +							val,
> > +							sizeof(struct drm_color_ctm), -1,
> > +							&replaced);
> > +		dm_plane_state->base.color_mgmt_changed |= replaced;
> > +		return ret;
> >  	} else if (property == adev->mode_info.plane_shaper_lut_property) {
> >  		ret = drm_property_replace_blob_from_id(plane->dev,
> >  							&dm_plane_state->shaper_lut,
> > @@ -1591,6 +1608,9 @@ dm_atomic_plane_get_property(struct drm_plane *plane,
> >  		*val = dm_plane_state->degamma_tf;
> >  	} else if (property == adev->mode_info.plane_hdr_mult_property) {
> >  		*val = dm_plane_state->hdr_mult;
> > +	} else if (property == adev->mode_info.plane_ctm_property) {
> > +		*val = (dm_plane_state->ctm) ?
> > +			dm_plane_state->ctm->base.id : 0;
> >  	} else 	if (property == adev->mode_info.plane_shaper_lut_property) {
> >  		*val = (dm_plane_state->shaper_lut) ?
> >  			dm_plane_state->shaper_lut->base.id : 0;
>

On 2023-09-08 10:41, Melissa Wen wrote:
> On 09/06, Harry Wentland wrote:
>>
>>
>> On 2023-08-10 12:03, Melissa Wen wrote:
>>> Plane CTM for pre-blending color space conversion. Only enable
>>> driver-specific plane CTM property on drivers that support both pre- and
>>> post-blending gamut remap matrix, i.e., DCN3+ family. Otherwise it
>>> conflits with DRM CRTC CTM property.
>>>
>>> Signed-off-by: Melissa Wen <mwen@igalia.com>
>>> ---
>>>   drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h      |  2 ++
>>>   .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  7 +++++++
>>>   .../amd/display/amdgpu_dm/amdgpu_dm_color.c   |  7 +++++++
>>>   .../amd/display/amdgpu_dm/amdgpu_dm_plane.c   | 20 +++++++++++++++++++
>>>   4 files changed, 36 insertions(+)
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
>>> index abb871a912d7..84bf501b02f4 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
>>> @@ -363,6 +363,8 @@ struct amdgpu_mode_info {
>>>   	 * @plane_hdr_mult_property:
>>>   	 */
>>>   	struct drm_property *plane_hdr_mult_property;
>>> +
>>> +	struct drm_property *plane_ctm_property;
>>>   	/**
>>>   	 * @shaper_lut_property: Plane property to set pre-blending shaper LUT
>>>   	 * that converts color content before 3D LUT.
>>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
>>> index 095f39f04210..6252ee912a63 100644
>>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
>>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
>>> @@ -769,6 +769,13 @@ struct dm_plane_state {
>>>   	 * S31.32 sign-magnitude.
>>>   	 */
>>>   	__u64 hdr_mult;
>>> +	/**
>>> +	 * @ctm:
>>> +	 *
>>> +	 * Color transformation matrix. See drm_crtc_enable_color_mgmt(). The
>>> +	 * blob (if not NULL) is a &struct drm_color_ctm.
>>> +	 */
>>> +	struct drm_property_blob *ctm;
>>>   	/**
>>>   	 * @shaper_lut: shaper lookup table blob. The blob (if not NULL) is an
>>>   	 * array of &struct drm_color_lut.
>>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
>>> index 4356846a2bce..86a918ab82be 100644
>>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
>>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
>>> @@ -218,6 +218,13 @@ amdgpu_dm_create_color_properties(struct amdgpu_device *adev)
>>>   		return -ENOMEM;
>>>   	adev->mode_info.plane_hdr_mult_property = prop;
>>>   
>>> +	prop = drm_property_create(adev_to_drm(adev),
>>> +				   DRM_MODE_PROP_BLOB,
>>> +				   "AMD_PLANE_CTM", 0);
>>
>> We'll want to wrap the property creation/attachment with
>> #ifdef AMD_PRIVATE_COLOR here as well.
> 
> yeah, it's already wrapped because it's created and attached together
> with the other properties.
> 

Ah, I missed that. All good then.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>

Harry

>>
>> Harry
>>
>>> +	if (!prop)
>>> +		return -ENOMEM;
>>> +	adev->mode_info.plane_ctm_property = prop;
>>> +
>>>   	prop = drm_property_create(adev_to_drm(adev),
>>>   				   DRM_MODE_PROP_BLOB,
>>>   				   "AMD_PLANE_SHAPER_LUT", 0);
>>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
>>> index 3fd57de7c5be..0b1081c690cb 100644
>>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
>>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
>>> @@ -1355,6 +1355,8 @@ dm_drm_plane_duplicate_state(struct drm_plane *plane)
>>>   
>>>   	if (dm_plane_state->degamma_lut)
>>>   		drm_property_blob_get(dm_plane_state->degamma_lut);
>>> +	if (dm_plane_state->ctm)
>>> +		drm_property_blob_get(dm_plane_state->ctm);
>>>   	if (dm_plane_state->shaper_lut)
>>>   		drm_property_blob_get(dm_plane_state->shaper_lut);
>>>   	if (dm_plane_state->lut3d)
>>> @@ -1436,6 +1438,8 @@ static void dm_drm_plane_destroy_state(struct drm_plane *plane,
>>>   
>>>   	if (dm_plane_state->degamma_lut)
>>>   		drm_property_blob_put(dm_plane_state->degamma_lut);
>>> +	if (dm_plane_state->ctm)
>>> +		drm_property_blob_put(dm_plane_state->ctm);
>>>   	if (dm_plane_state->lut3d)
>>>   		drm_property_blob_put(dm_plane_state->lut3d);
>>>   	if (dm_plane_state->shaper_lut)
>>> @@ -1473,6 +1477,11 @@ dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
>>>   				   dm->adev->mode_info.plane_hdr_mult_property,
>>>   				   AMDGPU_HDR_MULT_DEFAULT);
>>>   
>>> +	/* Only enable plane CTM if both DPP and MPC gamut remap is available. */
>>> +	if (dm->dc->caps.color.mpc.gamut_remap)
>>> +		drm_object_attach_property(&plane->base,
>>> +					   dm->adev->mode_info.plane_ctm_property, 0);
>>> +
>>>   	if (dpp_color_caps.hw_3d_lut) {
>>>   		drm_object_attach_property(&plane->base,
>>>   					   mode_info.plane_shaper_lut_property, 0);
>>> @@ -1530,6 +1539,14 @@ dm_atomic_plane_set_property(struct drm_plane *plane,
>>>   			dm_plane_state->hdr_mult = val;
>>>   			dm_plane_state->base.color_mgmt_changed = 1;
>>>   		}
>>> +	} else if (property == adev->mode_info.plane_ctm_property) {
>>> +		ret = drm_property_replace_blob_from_id(plane->dev,
>>> +							&dm_plane_state->ctm,
>>> +							val,
>>> +							sizeof(struct drm_color_ctm), -1,
>>> +							&replaced);
>>> +		dm_plane_state->base.color_mgmt_changed |= replaced;
>>> +		return ret;
>>>   	} else if (property == adev->mode_info.plane_shaper_lut_property) {
>>>   		ret = drm_property_replace_blob_from_id(plane->dev,
>>>   							&dm_plane_state->shaper_lut,
>>> @@ -1591,6 +1608,9 @@ dm_atomic_plane_get_property(struct drm_plane *plane,
>>>   		*val = dm_plane_state->degamma_tf;
>>>   	} else if (property == adev->mode_info.plane_hdr_mult_property) {
>>>   		*val = dm_plane_state->hdr_mult;
>>> +	} else if (property == adev->mode_info.plane_ctm_property) {
>>> +		*val = (dm_plane_state->ctm) ?
>>> +			dm_plane_state->ctm->base.id : 0;
>>>   	} else 	if (property == adev->mode_info.plane_shaper_lut_property) {
>>>   		*val = (dm_plane_state->shaper_lut) ?
>>>   			dm_plane_state->shaper_lut->base.id : 0;
>>