---
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 18 ++++++++++++++
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 9 +++++++
.../amd/display/amdgpu_dm/amdgpu_dm_color.c | 14 +++++++++++
.../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 24 +++++++++++++++++++
4 files changed, 65 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index ee67c5adf0f1..57822477408f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -364,6 +364,24 @@ struct amdgpu_mode_info {
* @plane_hdr_mult_property:
*/
struct drm_property *plane_hdr_mult_property;
+ /**
+ * @plane_lut3d_property: Plane property for color transformation using
+ * a 3D LUT (pre-blending), a three-dimensional array where each
+ * element is an RGB triplet. Each dimension has the size of
+ * lut3d_size. The array contains samples from the approximated
+ * function. On AMD, values between samples are estimated by
+ * tetrahedral interpolation. The array is accessed with three indices,
+ * one for each input dimension (color channel), blue being the
+ * outermost dimension, red the innermost.
+ */
+ struct drm_property *plane_lut3d_property;
+ /**
+ * @plane_degamma_lut_size_property: Plane property to define the max
+ * size of 3D LUT as supported by the driver (read-only). The max size
+ * is the max size of one dimension and, therefore, the max number of
+ * entries for 3D LUT array is the 3D LUT size cubed;
+ */
+ struct drm_property *plane_lut3d_size_property;
};
#define AMDGPU_MAX_BL_LEVEL 0xFF
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 38163b7084fa..03b48b331b7c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -776,6 +776,11 @@ struct dm_plane_state {
* TF is needed for any subsequent linear-to-non-linear transforms.
*/
__u64 hdr_mult;
+ /**
+ * @lut3d: 3D lookup table blob. The blob (if not NULL) is an array of
+ * &struct drm_color_lut.
+ */
+ struct drm_property_blob *lut3d;
};
struct dm_crtc_state {
@@ -861,6 +866,10 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
void amdgpu_dm_trigger_timing_sync(struct drm_device *dev);
+/* 3D LUT max size is 17x17x17 (4913 entries) */
+#define MAX_COLOR_3DLUT_SIZE 17
+#define MAX_COLOR_3DLUT_BITDEPTH 12
+/* 1D LUT size */
#define MAX_COLOR_LUT_ENTRIES 4096
/* Legacy gamm LUT users such as X doesn't like large LUT sizes */
#define MAX_COLOR_LEGACY_LUT_ENTRIES 256
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 b5b34a9209e4..a3b4f6a4c4a8 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
@@ -231,6 +231,20 @@ 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_LUT3D", 0);
+ if (!prop)
+ return -ENOMEM;
+ adev->mode_info.plane_lut3d_property = prop;
+
+ prop = drm_property_create_range(adev_to_drm(adev),
+ DRM_MODE_PROP_IMMUTABLE,
+ "AMD_PLANE_LUT3D_SIZE", 0, UINT_MAX);
+ if (!prop)
+ return -ENOMEM;
+ adev->mode_info.plane_lut3d_size_property = prop;
+
return 0;
}
#endif
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 45a2c9b36630..e588cff7d6b0 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
@@ -1364,6 +1364,9 @@ static struct drm_plane_state *amdgpu_dm_plane_drm_plane_duplicate_state(struct
if (old_dm_plane_state->degamma_lut)
dm_plane_state->degamma_lut =
drm_property_blob_get(old_dm_plane_state->degamma_lut);
+ if (old_dm_plane_state->lut3d)
+ dm_plane_state->lut3d =
+ drm_property_blob_get(old_dm_plane_state->lut3d);
dm_plane_state->degamma_tf = old_dm_plane_state->degamma_tf;
dm_plane_state->hdr_mult = old_dm_plane_state->hdr_mult;
@@ -1437,6 +1440,8 @@ static void amdgpu_dm_plane_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->lut3d)
+ drm_property_blob_put(dm_plane_state->lut3d);
if (dm_plane_state->dc_state)
dc_plane_state_release(dm_plane_state->dc_state);
@@ -1470,6 +1475,14 @@ dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
drm_object_attach_property(&plane->base,
dm->adev->mode_info.plane_hdr_mult_property,
AMDGPU_HDR_MULT_DEFAULT);
+
+ if (dpp_color_caps.hw_3d_lut) {
+ drm_object_attach_property(&plane->base,
+ mode_info.plane_lut3d_property, 0);
+ drm_object_attach_property(&plane->base,
+ mode_info.plane_lut3d_size_property,
+ MAX_COLOR_3DLUT_SIZE);
+ }
}
static int
@@ -1501,6 +1514,14 @@ 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_lut3d_property) {
+ ret = drm_property_replace_blob_from_id(plane->dev,
+ &dm_plane_state->lut3d,
+ val, -1,
+ sizeof(struct drm_color_lut),
+ &replaced);
+ dm_plane_state->base.color_mgmt_changed |= replaced;
+ return ret;
} else {
drm_dbg_atomic(plane->dev,
"[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
@@ -1528,6 +1549,9 @@ 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_lut3d_property) {
+ *val = (dm_plane_state->lut3d) ?
+ dm_plane_state->lut3d->base.id : 0;
} else {
return -EINVAL;
}
