[PATCH v2 33/34] drm/amd/display: add plane CTM support

From: Melissa Wen
Date: Thu Aug 10 2023 - 12:07:21 EST


Map the plane CTM driver-specific property to DC plane, instead of DC
stream. The remaining steps to program DPP block are already implemented
on DC shared-code.

Signed-off-by: Melissa Wen <mwen@xxxxxxxxxx>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
.../amd/display/amdgpu_dm/amdgpu_dm_color.c | 25 +++++++++++++++++++
2 files changed, 26 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index dfe61c5ed49e..f239410234b3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9578,6 +9578,7 @@ static bool should_reset_plane(struct drm_atomic_state *state,
if (dm_old_other_state->degamma_tf != dm_new_other_state->degamma_tf ||
dm_old_other_state->degamma_lut != dm_new_other_state->degamma_lut ||
dm_old_other_state->hdr_mult != dm_new_other_state->hdr_mult ||
+ dm_old_other_state->ctm != dm_new_other_state->ctm ||
dm_old_other_state->shaper_lut != dm_new_other_state->shaper_lut ||
dm_old_other_state->shaper_tf != dm_new_other_state->shaper_tf ||
dm_old_other_state->lut3d != dm_new_other_state->lut3d ||
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 86a918ab82be..7ff329101fd4 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
@@ -1158,6 +1158,8 @@ int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc,
struct dc_plane_state *dc_plane_state)
{
struct amdgpu_device *adev = drm_to_adev(crtc->base.state->dev);
+ struct dm_plane_state *dm_plane_state = to_dm_plane_state(plane_state);
+ struct drm_color_ctm *ctm = NULL;
struct dc_color_caps *color_caps = NULL;
bool has_crtc_cm_degamma;
int ret;
@@ -1209,6 +1211,29 @@ int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc,
return ret;
}

+ /* Setup CRTC CTM. */
+ if (dm_plane_state->ctm) {
+ ctm = (struct drm_color_ctm *)dm_plane_state->ctm->data;
+
+ /*
+ * So far, if we have both plane and CRTC CTM, plane CTM takes
+ * the priority and we discard data for CRTC CTM, as
+ * implemented in dcn10_program_gamut_remap(). However, we
+ * have MPC gamut_remap_matrix from DCN3 family, therefore we
+ * can remap MPC programing of the matrix to MPC block and
+ * provide support for both DPP and MPC matrix at the same
+ * time.
+ */
+ __drm_ctm_to_dc_matrix(ctm, dc_plane_state->gamut_remap_matrix.matrix);
+
+ dc_plane_state->gamut_remap_matrix.enable_remap = true;
+ dc_plane_state->input_csc_color_matrix.enable_adjustment = false;
+ } else {
+ /* Bypass CTM. */
+ dc_plane_state->gamut_remap_matrix.enable_remap = false;
+ dc_plane_state->input_csc_color_matrix.enable_adjustment = false;
+ }
+
return amdgpu_dm_plane_set_color_properties(plane_state,
dc_plane_state, color_caps);
}
--
2.40.1