[PATCH 1/2] drm/amd/display: decouple per-crtc-plane model

[PATCH 1/2] drm/amd/display: decouple per-crtc-plane model

[Shirish S]

Current design has per-crtc-plane model.
As a result, for asic's that support underlay,
are unable to expose it to user space for modesetting.

To enable this, the drm driver intialisation now runs
for number of surfaces instead of stream/crtc.

This patch plumbs surface capabilities to drm framework
so that it can be effectively used by user space.

Tests: (On Chromium OS for Stoney Only)
* 'modetest -p'  now shows additional plane
  with YUV capabilities in case of CZ and ST.
* 'plane_test' fails with below error:
  [drm:amdgpu_dm_connector_atomic_set_property [amdgpu]] *ERROR* Unsupported screen depth 0
  as ther is no support for YUYV
* Checked multimonitor display works fine

Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h           |  8 +++
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c  | 67 ++++++++++++++-----
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 75 +++++++++++++++-------
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.h    |  5 +-
 drivers/gpu/drm/amd/display/dc/dc.h                |  1 +
 .../drm/amd/display/dc/dce100/dce100_resource.c    |  2 +
 .../drm/amd/display/dc/dce110/dce110_resource.c    |  2 +
 .../drm/amd/display/dc/dce112/dce112_resource.c    |  2 +
 .../drm/amd/display/dc/dce120/dce120_resource.c    |  2 +
 .../gpu/drm/amd/display/dc/dce80/dce80_resource.c  |  2 +
 10 files changed, 127 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 3148412..da3b125 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -59,6 +59,7 @@ struct amdgpu_hpd;
 
 #define AMDGPU_MAX_HPD_PINS 6
 #define AMDGPU_MAX_CRTCS 6
+#define AMDGPU_MAX_PLANES 6
 #define AMDGPU_MAX_AFMT_BLOCKS 9
 
 enum amdgpu_rmx_type {
@@ -338,6 +339,7 @@ struct amdgpu_mode_info {
 	struct card_info *atom_card_info;
 	bool mode_config_initialized;
 	struct amdgpu_crtc *crtcs[AMDGPU_MAX_CRTCS];
+	struct amdgpu_plane *planes[AMDGPU_MAX_PLANES];
 	struct amdgpu_afmt *afmt[AMDGPU_MAX_AFMT_BLOCKS];
 	/* DVI-I properties */
 	struct drm_property *coherent_mode_property;
@@ -371,6 +373,7 @@ struct amdgpu_mode_info {
 	int			num_dig; /* number of dig blocks */
 	int			disp_priority;
 	const struct amdgpu_display_funcs *funcs;
+	enum drm_plane_type *plane_type;
 };
 
 #define AMDGPU_MAX_BL_LEVEL 0xFF
@@ -452,6 +455,11 @@ struct amdgpu_crtc {
 	struct drm_pending_vblank_event *event;
 };
 
+struct amdgpu_plane {
+	struct drm_plane base;
+	enum drm_plane_type plane_type;
+};
+
 struct amdgpu_encoder_atom_dig {
 	bool linkb;
 	/* atom dig */
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 df7f08b..ada5220 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -55,6 +55,28 @@
 
 #include "modules/inc/mod_freesync.h"
 
+static enum drm_plane_type dm_surfaces_type_default[AMDGPU_MAX_PLANES] = {
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+};
+
+static enum drm_plane_type dm_surfaces_type_carizzo[AMDGPU_MAX_PLANES] = {
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_OVERLAY,/* YUV Capable Underlay */
+};
+
+static enum drm_plane_type dm_surfaces_type_stoney[AMDGPU_MAX_PLANES] = {
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_PRIMARY,
+	DRM_PLANE_TYPE_OVERLAY, /* YUV Capable Underlay */
+};
+
 /*
  * dm_vblank_get_counter
  *
@@ -1058,30 +1080,34 @@ int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 	uint32_t i;
 	struct amdgpu_connector *aconnector;
 	struct amdgpu_encoder *aencoder;
-	struct amdgpu_crtc *acrtc;
+	struct amdgpu_mode_info *mode_info = &adev->mode_info;
 	uint32_t link_cnt;
 
 	link_cnt = dm->dc->caps.max_links;
-
 	if (amdgpu_dm_mode_config_init(dm->adev)) {
 		DRM_ERROR("DM: Failed to initialize mode config\n");
-		return -1;
+		goto fail;
 	}
 
-	for (i = 0; i < dm->dc->caps.max_streams; i++) {
-		acrtc = kzalloc(sizeof(struct amdgpu_crtc), GFP_KERNEL);
-		if (!acrtc)
-			goto fail;
+	for (i = 0; i < dm->dc->caps.max_surfaces; i++) {
+		mode_info->planes[i] = kzalloc(sizeof(struct amdgpu_plane),
+								 GFP_KERNEL);
+		if (!mode_info->planes[i]) {
+			DRM_ERROR("KMS: Failed to allocate surface\n");
+			goto fail_free_planes;
+		}
+		mode_info->planes[i]->plane_type = mode_info->plane_type[i];
+		if (amdgpu_dm_plane_init(dm, mode_info->planes[i], 1)) {
+			DRM_ERROR("KMS: Failed to initialize plane\n");
+			goto fail_free_planes;
+		}
+	}
 
-		if (amdgpu_dm_crtc_init(
-			dm,
-			acrtc,
-			i)) {
+	for (i = 0; i < dm->dc->caps.max_streams; i++)
+		if (amdgpu_dm_crtc_init(dm, &mode_info->planes[i]->base, i)) {
 			DRM_ERROR("KMS: Failed to initialize crtc\n");
-			kfree(acrtc);
-			goto fail;
+			goto fail_free_planes;
 		}
-	}
 
 	dm->display_indexes_num = dm->dc->caps.max_streams;
 
@@ -1132,12 +1158,12 @@ int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 	case CHIP_VEGA10:
 		if (dce110_register_irq_handlers(dm->adev)) {
 			DRM_ERROR("DM: Failed to initialize IRQ\n");
-			return -1;
+			goto fail_free_encoder;
 		}
 		break;
 	default:
 		DRM_ERROR("Usupported ASIC type: 0x%X\n", adev->asic_type);
-		return -1;
+		goto fail_free_encoder;
 	}
 
 	drm_mode_config_reset(dm->ddev);
@@ -1147,6 +1173,9 @@ int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
 	kfree(aencoder);
 fail_free_connector:
 	kfree(aconnector);
+fail_free_planes:
+	for (i = 0; i < dm->dc->caps.max_surfaces; i++)
+		kfree(mode_info->planes[i]);
 fail:
 	return -1;
 }
@@ -1538,6 +1567,7 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_crtc = 6;
 		adev->mode_info.num_hpd = 6;
 		adev->mode_info.num_dig = 6;
+		adev->mode_info.plane_type = dm_surfaces_type_default;
 #ifdef CONFIG_DRM_AMDGPU_CIK
 		if (adev->mode_info.funcs == NULL)
 			adev->mode_info.funcs = &dm_dce_v8_0_display_funcs;
@@ -1548,6 +1578,7 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_crtc = 6;
 		adev->mode_info.num_hpd = 6;
 		adev->mode_info.num_dig = 7;
+		adev->mode_info.plane_type = dm_surfaces_type_default;
 		if (adev->mode_info.funcs == NULL)
 			adev->mode_info.funcs = &dm_dce_v10_0_display_funcs;
 		break;
@@ -1555,6 +1586,7 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_crtc = 3;
 		adev->mode_info.num_hpd = 6;
 		adev->mode_info.num_dig = 9;
+		adev->mode_info.plane_type = dm_surfaces_type_carizzo;
 		if (adev->mode_info.funcs == NULL)
 			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
 		break;
@@ -1562,6 +1594,7 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_crtc = 2;
 		adev->mode_info.num_hpd = 6;
 		adev->mode_info.num_dig = 9;
+		adev->mode_info.plane_type = dm_surfaces_type_stoney;
 		if (adev->mode_info.funcs == NULL)
 			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
 		break;
@@ -1570,6 +1603,7 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_crtc = 5;
 		adev->mode_info.num_hpd = 5;
 		adev->mode_info.num_dig = 5;
+		adev->mode_info.plane_type = dm_surfaces_type_default;
 		if (adev->mode_info.funcs == NULL)
 			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
 		break;
@@ -1577,6 +1611,7 @@ static int dm_early_init(void *handle)
 		adev->mode_info.num_crtc = 6;
 		adev->mode_info.num_hpd = 6;
 		adev->mode_info.num_dig = 6;
+		adev->mode_info.plane_type = dm_surfaces_type_default;
 		if (adev->mode_info.funcs == NULL)
 			adev->mode_info.funcs = &dm_dce_v11_0_display_funcs;
 		break;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
index 929a4c8..b35aaae 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -1605,6 +1605,8 @@ static int dm_encoder_helper_atomic_check(
 }
 
 const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs = {
+	.update_plane   = drm_atomic_helper_update_plane,
+	.disable_plane  = drm_atomic_helper_disable_plane,
 	.disable = dm_encoder_helper_disable,
 	.atomic_check = dm_encoder_helper_atomic_check
 };
@@ -1741,37 +1743,67 @@ static uint32_t rgb_formats[] = {
 	DRM_FORMAT_ABGR2101010,
 };
 
-int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
-			struct amdgpu_crtc *acrtc,
-			uint32_t crtc_index)
+static uint32_t yuv_formats[] = {
+	DRM_FORMAT_YUYV,
+	DRM_FORMAT_YVYU,
+	DRM_FORMAT_UYVY,
+	DRM_FORMAT_VYUY,
+};
+
+int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
+			struct amdgpu_plane *aplane,
+			unsigned long possible_crtcs)
 {
-	int res = -ENOMEM;
+	int res = -EPERM;
 
-	struct drm_plane *primary_plane =
-		kzalloc(sizeof(*primary_plane), GFP_KERNEL);
+	switch (aplane->plane_type) {
+	case DRM_PLANE_TYPE_PRIMARY:
+		aplane->base.format_default = true;
 
-	if (!primary_plane)
-		goto fail_plane;
+		res = drm_universal_plane_init(
+				dm->adev->ddev,
+				&aplane->base,
+				possible_crtcs,
+				&dm_plane_funcs,
+				rgb_formats,
+				ARRAY_SIZE(rgb_formats),
+				aplane->plane_type, NULL);
+		break;
+	case DRM_PLANE_TYPE_OVERLAY:
+		res = drm_universal_plane_init(
+				dm->adev->ddev,
+				&aplane->base,
+				possible_crtcs,
+				&dm_plane_funcs,
+				yuv_formats,
+				ARRAY_SIZE(yuv_formats),
+				aplane->plane_type, NULL);
+		break;
+	case DRM_PLANE_TYPE_CURSOR:
+		DRM_ERROR("KMS: Cursor plane not implemented.");
+		break;
+	}
 
-	primary_plane->format_default = true;
+	drm_plane_helper_add(&aplane->base, &dm_plane_helper_funcs);
 
-	res = drm_universal_plane_init(
-		dm->adev->ddev,
-		primary_plane,
-		0,
-		&dm_plane_funcs,
-		rgb_formats,
-		ARRAY_SIZE(rgb_formats),
-		DRM_PLANE_TYPE_PRIMARY, NULL);
+	return res;
+}
 
-	primary_plane->crtc = &acrtc->base;
+int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
+			struct drm_plane *plane,
+			uint32_t crtc_index)
+{
+	struct amdgpu_crtc *acrtc;
+	int res = -ENOMEM;
 
-	drm_plane_helper_add(primary_plane, &dm_plane_helper_funcs);
+	acrtc = kzalloc(sizeof(struct amdgpu_crtc), GFP_KERNEL);
+	if (!acrtc)
+		goto fail;
 
 	res = drm_crtc_init_with_planes(
 			dm->ddev,
 			&acrtc->base,
-			primary_plane,
+			plane,
 			NULL,
 			&amdgpu_dm_crtc_funcs, NULL);
 
@@ -1791,8 +1823,7 @@ int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
 
 	return 0;
 fail:
-	kfree(primary_plane);
-fail_plane:
+	kfree(acrtc);
 	acrtc->crtc_id = -1;
 	return res;
 }
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h
index 1bbeb87..ab6d51d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.h
@@ -34,8 +34,11 @@ struct dc_validation_set;
 struct dc_surface;
 
 /*TODO Jodan Hersen use the one in amdgpu_dm*/
+int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
+			struct amdgpu_plane *aplane,
+			unsigned long possible_crtcs);
 int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
-			struct amdgpu_crtc *amdgpu_crtc,
+			struct drm_plane *plane,
 			uint32_t link_index);
 int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
 			struct amdgpu_connector *amdgpu_connector,
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 8b033ba..aa2ec71 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -45,6 +45,7 @@ struct dc_caps {
 	uint32_t max_links;
 	uint32_t max_audios;
 	uint32_t max_slave_planes;
+	uint32_t max_surfaces;
 	uint32_t max_downscale_ratio;
 	uint32_t i2c_speed_in_khz;
 
diff --git a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
index b6f77f8..d1685df 100644
--- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
@@ -1035,6 +1035,8 @@ static bool construct(
 		}
 	}
 
+	dc->public.caps.max_surfaces =  pool->base.pipe_count;
+
 	if (!resource_construct(num_virtual_links, dc, &pool->base,
 			&res_create_funcs))
 		goto res_create_fail;
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
index e300203..065a298 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_resource.c
@@ -1455,6 +1455,8 @@ static bool construct(
 	if (!dce110_hw_sequencer_construct(dc))
 		goto res_create_fail;
 
+	dc->public.caps.max_surfaces =  pool->base.pipe_count;
+
 	bw_calcs_init(&dc->bw_dceip, &dc->bw_vbios, dc->ctx->asic_id);
 
 	bw_calcs_data_update_from_pplib(dc);
diff --git a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
index 32aa1b5..ece3ec7 100644
--- a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
@@ -1409,6 +1409,8 @@ static bool construct(
 			  &res_create_funcs))
 		goto res_create_fail;
 
+	dc->public.caps.max_surfaces =  pool->base.pipe_count;
+
 	/* Create hardware sequencer */
 	if (!dce112_hw_sequencer_construct(dc))
 		goto res_create_fail;
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
index efa5888..f677a77 100644
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
@@ -1060,6 +1060,8 @@ static bool construct(
 	if (!dce120_hw_sequencer_create(dc))
 		goto controller_create_fail;
 
+	dc->public.caps.max_surfaces =  pool->base.pipe_count;
+
 	bw_calcs_init(&dc->bw_dceip, &dc->bw_vbios, dc->ctx->asic_id);
 
 	bw_calcs_data_update_from_pplib(dc);
diff --git a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
index a3e8182..752e0e7 100644
--- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
@@ -1043,6 +1043,8 @@ static bool construct(
 		}
 	}
 
+	dc->public.caps.max_surfaces =  pool->base.pipe_count;
+
 	if (!resource_construct(num_virtual_links, dc, &pool->base,
 			&res_create_funcs))
 		goto res_create_fail;
-- 
2.7.4

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[PATCH 2/2] drm/amd/display: update plane functionalities

[Shirish S]

This patch introduces amdgpu_drm_plane_state
structure, which subclasses drm_plane_state and
holds data suitable for configuring hardware.

It switches reset(), atomic_duplicate_state()
& atomic_destroy_state() functions to new internal
implementation, earlier they were pointing to
drm core functions.

TESTS(On Chromium OS on Stoney Only)
* Builds without compilation errors.
* 'plane_test' passes for XR24 format
  based Overlay plane.
* Chromium OS ui comes up.

Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h           | 13 ++++++
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 53 ++++++++++++++++++++--
 2 files changed, 63 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index da3b125..7f2d282 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -56,6 +56,7 @@ struct amdgpu_hpd;
 #define to_amdgpu_connector(x) container_of(x, struct amdgpu_connector, base)
 #define to_amdgpu_encoder(x) container_of(x, struct amdgpu_encoder, base)
 #define to_amdgpu_framebuffer(x) container_of(x, struct amdgpu_framebuffer, base)
+#define to_amdgpu_plane(x)	container_of(x, struct amdgpu_plane, base)
 
 #define AMDGPU_MAX_HPD_PINS 6
 #define AMDGPU_MAX_CRTCS 6
@@ -455,6 +456,18 @@ struct amdgpu_crtc {
 	struct drm_pending_vblank_event *event;
 };
 
+struct amdgpu_plane_state {
+	struct drm_plane_state base;
+	unsigned int h_ratio;
+	unsigned int v_ratio;
+};
+
+static inline struct amdgpu_plane_state *
+to_amdgpu_plane_state(struct drm_plane_state *state)
+{
+	return container_of(state, struct amdgpu_plane_state, base);
+}
+
 struct amdgpu_plane {
 	struct drm_plane base;
 	enum drm_plane_type plane_type;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
index b35aaae..b694c7b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -1611,10 +1611,57 @@ const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs = {
 	.atomic_check = dm_encoder_helper_atomic_check
 };
 
+static void dm_drm_plane_reset(struct drm_plane *plane)
+{
+	struct amdgpu_plane_state *amdgpu_state;
+
+	if (plane->state) {
+		amdgpu_state = to_amdgpu_plane_state(plane->state);
+		if (amdgpu_state->base.fb)
+			drm_framebuffer_unreference(amdgpu_state->base.fb);
+		kfree(amdgpu_state);
+		plane->state = NULL;
+	}
+
+	amdgpu_state = kzalloc(sizeof(*amdgpu_state), GFP_KERNEL);
+	if (amdgpu_state) {
+		plane->state = &amdgpu_state->base;
+		plane->state->plane = plane;
+	}
+}
+
+static struct drm_plane_state *
+dm_drm_plane_duplicate_state(struct drm_plane *plane)
+{
+	struct amdgpu_plane_state *amdgpu_state;
+	struct amdgpu_plane_state *copy;
+
+	amdgpu_state = to_amdgpu_plane_state(plane->state);
+	copy = kzalloc(sizeof(*amdgpu_state), GFP_KERNEL);
+	if (!copy)
+		return NULL;
+
+	__drm_atomic_helper_plane_duplicate_state(plane, &copy->base);
+	return &copy->base;
+}
+
+static void dm_drm_plane_destroy_state(struct drm_plane *plane,
+					   struct drm_plane_state *old_state)
+{
+	struct amdgpu_plane_state *old_amdgpu_state =
+					to_amdgpu_plane_state(old_state);
+	__drm_atomic_helper_plane_destroy_state(old_state);
+	kfree(old_amdgpu_state);
+}
+
 static const struct drm_plane_funcs dm_plane_funcs = {
-	.reset = drm_atomic_helper_plane_reset,
-	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
-	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state
+	.update_plane	= drm_atomic_helper_update_plane,
+	.disable_plane	= drm_atomic_helper_disable_plane,
+	.destroy	= drm_plane_cleanup,
+	.set_property	= drm_atomic_helper_plane_set_property,
+	.reset = dm_drm_plane_reset,
+	.atomic_duplicate_state = dm_drm_plane_duplicate_state,
+	.atomic_destroy_state = dm_drm_plane_destroy_state,
 };
 
 static int dm_plane_helper_prepare_fb(
-- 
2.7.4

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