[PATCH v3 04/32] drm/amd/display: add driver-specific property for plane degamma LUT
Melissa Wen
mwen at igalia.com
Mon Sep 25 19:49:04 UTC 2023
Hook up driver-specific atomic operations for managing AMD color
properties. Create AMD driver-specific color management properties
and attach them according to HW capabilities defined by `struct
dc_color_caps`.
First add plane degamma LUT properties that means user-blob and its
size. We will add more plane color properties in the next patches. In
addition, we define AMD_PRIVATE_COLOR to guard these driver-specific
plane properties.
Plane degamma can be used to linearize input space for arithmetical
operations that are more accurate when applied in linear color.
v2:
- update degamma LUT prop description
- move private color operations from amdgpu_display to amdgpu_dm_color
Reviewed-by: Harry Wentland <harry.wentland at amd.com>
Co-developed-by: Joshua Ashton <joshua at froggi.es>
Signed-off-by: Joshua Ashton <joshua at froggi.es>
Signed-off-by: Melissa Wen <mwen at igalia.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 11 +++
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 11 +++
.../amd/display/amdgpu_dm/amdgpu_dm_color.c | 24 ++++++
.../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 81 +++++++++++++++++++
5 files changed, 132 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 32fe05c810c6..ec4621deac8c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -343,6 +343,17 @@ struct amdgpu_mode_info {
int disp_priority;
const struct amdgpu_display_funcs *funcs;
const enum drm_plane_type *plane_type;
+
+ /* Driver-private color mgmt props */
+
+ /* @plane_degamma_lut_property: Plane property to set a degamma LUT to
+ * convert input space before blending.
+ */
+ struct drm_property *plane_degamma_lut_property;
+ /* @plane_degamma_lut_size_property: Plane property to define the max
+ * size of degamma LUT as supported by the driver (read-only).
+ */
+ struct drm_property *plane_degamma_lut_size_property;
};
#define AMDGPU_MAX_BL_LEVEL 0xFF
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 373884ca38b9..1ad16850e8c5 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4041,6 +4041,11 @@ static int amdgpu_dm_mode_config_init(struct amdgpu_device *adev)
return r;
}
+#ifdef AMD_PRIVATE_COLOR
+ if (amdgpu_dm_create_color_properties(adev))
+ return -ENOMEM;
+#endif
+
r = amdgpu_dm_audio_init(adev);
if (r) {
dc_release_state(state->context);
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 3d480be802cb..0eafbf00505b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -719,6 +719,16 @@ extern const struct amdgpu_ip_block_version dm_ip_block;
struct dm_plane_state {
struct drm_plane_state base;
struct dc_plane_state *dc_state;
+
+ /* Plane color mgmt */
+ /**
+ * @degamma_lut:
+ *
+ * 1D LUT for mapping framebuffer/plane pixel data before sampling or
+ * blending operations. It's usually applied to linearize input space.
+ * The blob (if not NULL) is an array of &struct drm_color_lut.
+ */
+ struct drm_property_blob *degamma_lut;
};
struct dm_crtc_state {
@@ -809,6 +819,7 @@ void amdgpu_dm_trigger_timing_sync(struct drm_device *dev);
#define MAX_COLOR_LEGACY_LUT_ENTRIES 256
void amdgpu_dm_init_color_mod(void);
+int amdgpu_dm_create_color_properties(struct amdgpu_device *adev);
int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state);
int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc);
int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc,
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 a4cb23d059bd..cf175b86ba80 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
@@ -84,6 +84,30 @@ void amdgpu_dm_init_color_mod(void)
setup_x_points_distribution();
}
+#ifdef AMD_PRIVATE_COLOR
+int
+amdgpu_dm_create_color_properties(struct amdgpu_device *adev)
+{
+ struct drm_property *prop;
+
+ prop = drm_property_create(adev_to_drm(adev),
+ DRM_MODE_PROP_BLOB,
+ "AMD_PLANE_DEGAMMA_LUT", 0);
+ if (!prop)
+ return -ENOMEM;
+ adev->mode_info.plane_degamma_lut_property = prop;
+
+ prop = drm_property_create_range(adev_to_drm(adev),
+ DRM_MODE_PROP_IMMUTABLE,
+ "AMD_PLANE_DEGAMMA_LUT_SIZE", 0, UINT_MAX);
+ if (!prop)
+ return -ENOMEM;
+ adev->mode_info.plane_degamma_lut_size_property = prop;
+
+ return 0;
+}
+#endif
+
/**
* __extract_blob_lut - Extracts the DRM lut and lut size from a blob.
* @blob: DRM color mgmt property blob
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 8038fe3d193e..2f25f02185ff 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 +1355,9 @@ dm_drm_plane_duplicate_state(struct drm_plane *plane)
dc_plane_state_retain(dm_plane_state->dc_state);
}
+ if (dm_plane_state->degamma_lut)
+ drm_property_blob_get(dm_plane_state->degamma_lut);
+
return &dm_plane_state->base;
}
@@ -1422,12 +1425,83 @@ static void dm_drm_plane_destroy_state(struct drm_plane *plane,
{
struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
+ if (dm_plane_state->degamma_lut)
+ drm_property_blob_put(dm_plane_state->degamma_lut);
+
if (dm_plane_state->dc_state)
dc_plane_state_release(dm_plane_state->dc_state);
drm_atomic_helper_plane_destroy_state(plane, state);
}
+#ifdef AMD_PRIVATE_COLOR
+static void
+dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
+ struct drm_plane *plane)
+{
+ struct amdgpu_mode_info mode_info = dm->adev->mode_info;
+ struct dpp_color_caps dpp_color_caps = dm->dc->caps.color.dpp;
+
+ /* Check HW color pipeline capabilities for DPP (pre-blending) before expose*/
+ if (dpp_color_caps.dgam_ram || dpp_color_caps.gamma_corr) {
+ drm_object_attach_property(&plane->base,
+ mode_info.plane_degamma_lut_property, 0);
+ drm_object_attach_property(&plane->base,
+ mode_info.plane_degamma_lut_size_property,
+ MAX_COLOR_LUT_ENTRIES);
+ }
+}
+
+static int
+dm_atomic_plane_set_property(struct drm_plane *plane,
+ struct drm_plane_state *state,
+ struct drm_property *property,
+ uint64_t val)
+{
+ struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
+ struct amdgpu_device *adev = drm_to_adev(plane->dev);
+ bool replaced = false;
+ int ret;
+
+ if (property == adev->mode_info.plane_degamma_lut_property) {
+ ret = drm_property_replace_blob_from_id(plane->dev,
+ &dm_plane_state->degamma_lut,
+ 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",
+ plane->base.id, plane->name,
+ property->base.id, property->name);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+dm_atomic_plane_get_property(struct drm_plane *plane,
+ const struct drm_plane_state *state,
+ struct drm_property *property,
+ uint64_t *val)
+{
+ struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
+ struct amdgpu_device *adev = drm_to_adev(plane->dev);
+
+ if (property == adev->mode_info.plane_degamma_lut_property) {
+ *val = (dm_plane_state->degamma_lut) ?
+ dm_plane_state->degamma_lut->base.id : 0;
+ } else {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#endif
+
static const struct drm_plane_funcs dm_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
@@ -1436,6 +1510,10 @@ static const struct drm_plane_funcs dm_plane_funcs = {
.atomic_duplicate_state = dm_drm_plane_duplicate_state,
.atomic_destroy_state = dm_drm_plane_destroy_state,
.format_mod_supported = dm_plane_format_mod_supported,
+#ifdef AMD_PRIVATE_COLOR
+ .atomic_set_property = dm_atomic_plane_set_property,
+ .atomic_get_property = dm_atomic_plane_get_property,
+#endif
};
int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
@@ -1515,6 +1593,9 @@ int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
drm_plane_helper_add(plane, &dm_plane_helper_funcs);
+#ifdef AMD_PRIVATE_COLOR
+ dm_atomic_plane_attach_color_mgmt_properties(dm, plane);
+#endif
/* Create (reset) the plane state */
if (plane->funcs->reset)
plane->funcs->reset(plane);
--
2.40.1
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