From: Joshua Ashton <jos...@froggi.es>
Map plane blend properties to DPP blend gamma. Plane blend is a
post-3D LUT curve that linearizes color space for blending. It may be
defined by a user-blob LUT and/or predefined transfer function. As
hardcoded curve (ROM) is not supported on blend gamma, we use AMD color
module to fill parameters when setting non-linear TF with empty LUT.
v2:
- rename DRM TFs to AMDGPU TFs
Reviewed-by: Harry Wentland <harry.wentl...@amd.com>
Signed-off-by: Joshua Ashton <jos...@froggi.es>
Signed-off-by: Melissa Wen <m...@igalia.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
.../amd/display/amdgpu_dm/amdgpu_dm_color.c | 56 +++++++++++++++++--
2 files changed, 53 insertions(+), 4 deletions(-)
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 83b1440ad69a..277b4bc82bcf 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8157,6 +8157,7 @@ static void amdgpu_dm_commit_planes(struct
drm_atomic_state *state,
bundle->surface_updates[planes_count].hdr_mult =
dc_plane->hdr_mult;
bundle->surface_updates[planes_count].func_shaper =
dc_plane->in_shaper_func;
bundle->surface_updates[planes_count].lut3d_func =
dc_plane->lut3d_func;
+ bundle->surface_updates[planes_count].blend_tf =
dc_plane->blend_tf;
}
amdgpu_dm_plane_fill_dc_scaling_info(dm->adev, new_plane_state,
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 738399538432..27ddc6576719 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
@@ -733,6 +733,35 @@ static int amdgpu_dm_atomic_shaper_lut(const struct
drm_color_lut *shaper_lut,
return ret;
}
+static int amdgpu_dm_atomic_blend_lut(const struct drm_color_lut *blend_lut,
+ bool has_rom,
+ enum dc_transfer_func_predefined tf,
+ uint32_t blend_size,
+ struct dc_transfer_func *func_blend)
+{
+ int ret = 0;
+
+ if (blend_size || tf != TRANSFER_FUNCTION_LINEAR) {
+ /*
+ * DRM plane gamma LUT or TF means we are linearizing color
+ * space before blending (similar to degamma programming). As
+ * we don't have hardcoded curve support, or we use AMD color
+ * module to fill the parameters that will be translated to HW
+ * points.
+ */
+ func_blend->type = TF_TYPE_DISTRIBUTED_POINTS;
+ func_blend->tf = tf;
+ func_blend->sdr_ref_white_level = SDR_WHITE_LEVEL_INIT_VALUE;
+
+ ret = __set_input_tf(func_blend, blend_lut, blend_size);
+ } else {
+ func_blend->type = TF_TYPE_BYPASS;
+ func_blend->tf = TRANSFER_FUNCTION_LINEAR;
+ }
+
+ return ret;
+}
+
/**
* amdgpu_dm_verify_lut3d_size - verifies if 3D LUT is supported and if user
* shaper and 3D LUTs match the hw supported size
@@ -1071,8 +1100,9 @@ amdgpu_dm_plane_set_color_properties(struct
drm_plane_state *plane_state,
{
struct dm_plane_state *dm_plane_state = to_dm_plane_state(plane_state);
enum amdgpu_transfer_function shaper_tf =
AMDGPU_TRANSFER_FUNCTION_DEFAULT;
- const struct drm_color_lut *shaper_lut, *lut3d;
- uint32_t shaper_size, lut3d_size;
+ enum amdgpu_transfer_function blend_tf =
AMDGPU_TRANSFER_FUNCTION_DEFAULT;
+ const struct drm_color_lut *shaper_lut, *lut3d, *blend_lut;
+ uint32_t shaper_size, lut3d_size, blend_size;
int ret;
dc_plane_state->hdr_mult =
dc_fixpt_from_s3132(dm_plane_state->hdr_mult);
@@ -1088,12 +1118,30 @@ amdgpu_dm_plane_set_color_properties(struct
drm_plane_state *plane_state,
amdgpu_tf_to_dc_tf(shaper_tf),
shaper_size,
dc_plane_state->in_shaper_func);
- if (ret)
+ if (ret) {
drm_dbg_kms(plane_state->plane->dev,
"setting plane %d shaper LUT failed.\n",
plane_state->plane->index);
- return ret;
+ return ret;
+ }
+
+ blend_tf = dm_plane_state->blend_tf;
+ blend_lut = __extract_blob_lut(dm_plane_state->blend_lut, &blend_size);
+ blend_size = blend_lut != NULL ? blend_size : 0;
+
+ ret = amdgpu_dm_atomic_blend_lut(blend_lut, false,
+ amdgpu_tf_to_dc_tf(blend_tf),
+ blend_size, dc_plane_state->blend_tf);
+ if (ret) {
+ drm_dbg_kms(plane_state->plane->dev,
+ "setting plane %d gamma lut failed.\n",
+ plane_state->plane->index);
+
+ return ret;
+ }
+
+ return 0;
}
/**
--
2.40.1
