[PATCH 3/5] drm/arm/komeda: Initialize komeda component as drm private object

[james qian wang (Arm Technology China)]

Initialize koemda_layer, komeda_compiz, komeda_improc and
komeda_timing_ctrlr as drm private object, then track komeda private
component state by drm_atomic_state.

Signed-off-by: James (Qian) Wang <james.qian.wang at arm.com>
---
 .../arm/display/komeda/komeda_private_obj.c   | 200 +++++++++++++++++-
 1 file changed, 198 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c b/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c
index 9edfd6ab0c12..c5b42fc4f904 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c
@@ -7,6 +7,184 @@
 #include "komeda_dev.h"
 #include "komeda_kms.h"
 
+static void
+komeda_component_state_reset(struct komeda_component_state *st)
+{
+	st->binding_user = NULL;
+	st->affected_inputs = st->active_inputs;
+	st->active_inputs = 0;
+	st->changed_active_inputs = 0;
+}
+
+static struct drm_private_state *
+komeda_layer_atomic_duplicate_state(struct drm_private_obj *obj)
+{
+	struct komeda_layer_state *st;
+
+	st = kmemdup(obj->state, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return NULL;
+
+	komeda_component_state_reset(&st->base);
+	__drm_atomic_helper_private_obj_duplicate_state(obj, &st->base.obj);
+
+	return &st->base.obj;
+}
+
+static void
+komeda_layer_atomic_destroy_state(struct drm_private_obj *obj,
+				  struct drm_private_state *state)
+{
+	struct komeda_layer_state *st = to_layer_st(priv_to_comp_st(state));
+
+	kfree(st);
+}
+
+static const struct drm_private_state_funcs komeda_layer_obj_funcs = {
+	.atomic_duplicate_state	= komeda_layer_atomic_duplicate_state,
+	.atomic_destroy_state	= komeda_layer_atomic_destroy_state,
+};
+
+static int komeda_layer_obj_add(struct komeda_layer *layer)
+{
+	struct komeda_layer_state *st;
+
+	st = kzalloc(sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	st->base.component = &layer->base;
+	drm_atomic_private_obj_init(&layer->base.obj, &st->base.obj,
+				    &komeda_layer_obj_funcs);
+	return 0;
+}
+
+static struct drm_private_state *
+komeda_compiz_atomic_duplicate_state(struct drm_private_obj *obj)
+{
+	struct komeda_compiz_state *st;
+
+	st = kmemdup(obj->state, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return NULL;
+
+	komeda_component_state_reset(&st->base);
+	__drm_atomic_helper_private_obj_duplicate_state(obj, &st->base.obj);
+
+	return &st->base.obj;
+}
+
+static void
+komeda_compiz_atomic_destroy_state(struct drm_private_obj *obj,
+				   struct drm_private_state *state)
+{
+	kfree(to_compiz_st(priv_to_comp_st(state)));
+}
+
+static const struct drm_private_state_funcs komeda_compiz_obj_funcs = {
+	.atomic_duplicate_state	= komeda_compiz_atomic_duplicate_state,
+	.atomic_destroy_state	= komeda_compiz_atomic_destroy_state,
+};
+
+static int komeda_compiz_obj_add(struct komeda_compiz *compiz)
+{
+	struct komeda_compiz_state *st;
+
+	st = kzalloc(sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	st->base.component = &compiz->base;
+	drm_atomic_private_obj_init(&compiz->base.obj, &st->base.obj,
+				    &komeda_compiz_obj_funcs);
+
+	return 0;
+}
+
+static struct drm_private_state *
+komeda_improc_atomic_duplicate_state(struct drm_private_obj *obj)
+{
+	struct komeda_improc_state *st;
+
+	st = kmemdup(obj->state, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return NULL;
+
+	komeda_component_state_reset(&st->base);
+	__drm_atomic_helper_private_obj_duplicate_state(obj, &st->base.obj);
+
+	return &st->base.obj;
+}
+
+static void
+komeda_improc_atomic_destroy_state(struct drm_private_obj *obj,
+				   struct drm_private_state *state)
+{
+	kfree(to_improc_st(priv_to_comp_st(state)));
+}
+
+static const struct drm_private_state_funcs komeda_improc_obj_funcs = {
+	.atomic_duplicate_state	= komeda_improc_atomic_duplicate_state,
+	.atomic_destroy_state	= komeda_improc_atomic_destroy_state,
+};
+
+static int komeda_improc_obj_add(struct komeda_improc *improc)
+{
+	struct komeda_improc_state *st;
+
+	st = kzalloc(sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	st->base.component = &improc->base;
+	drm_atomic_private_obj_init(&improc->base.obj, &st->base.obj,
+				    &komeda_improc_obj_funcs);
+
+	return 0;
+}
+
+static struct drm_private_state *
+komeda_timing_ctrlr_atomic_duplicate_state(struct drm_private_obj *obj)
+{
+	struct komeda_timing_ctrlr_state *st;
+
+	st = kmemdup(obj->state, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return NULL;
+
+	komeda_component_state_reset(&st->base);
+	__drm_atomic_helper_private_obj_duplicate_state(obj, &st->base.obj);
+
+	return &st->base.obj;
+}
+
+static void
+komeda_timing_ctrlr_atomic_destroy_state(struct drm_private_obj *obj,
+					 struct drm_private_state *state)
+{
+	kfree(to_ctrlr_st(priv_to_comp_st(state)));
+}
+
+static const struct drm_private_state_funcs komeda_timing_ctrlr_obj_funcs = {
+	.atomic_duplicate_state	= komeda_timing_ctrlr_atomic_duplicate_state,
+	.atomic_destroy_state	= komeda_timing_ctrlr_atomic_destroy_state,
+};
+
+static int komeda_timing_ctrlr_obj_add(struct komeda_timing_ctrlr *ctrlr)
+{
+	struct komeda_compiz_state *st;
+
+	st = kzalloc(sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	st->base.component = &ctrlr->base;
+	drm_atomic_private_obj_init(&ctrlr->base.obj, &st->base.obj,
+				    &komeda_timing_ctrlr_obj_funcs);
+
+	return 0;
+}
+
 static struct drm_private_state *
 komeda_pipeline_atomic_duplicate_state(struct drm_private_obj *obj)
 {
@@ -55,7 +233,7 @@ int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
 				struct komeda_dev *mdev)
 {
 	struct komeda_pipeline *pipe;
-	int i, err;
+	int i, j, err;
 
 	for (i = 0; i < mdev->n_pipelines; i++) {
 		pipe = mdev->pipelines[i];
@@ -64,7 +242,23 @@ int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
 		if (err)
 			return err;
 
-		/* Add component */
+		for (j = 0; j < pipe->n_layers; j++) {
+			err = komeda_layer_obj_add(pipe->layers[j]);
+			if (err)
+				return err;
+		}
+
+		err = komeda_compiz_obj_add(pipe->compiz);
+		if (err)
+			return err;
+
+		err = komeda_improc_obj_add(pipe->improc);
+		if (err)
+			return err;
+
+		err = komeda_timing_ctrlr_obj_add(pipe->ctrlr);
+		if (err)
+			return err;
 	}
 
 	return 0;
@@ -78,11 +272,13 @@ void komeda_kms_cleanup_private_objs(struct komeda_dev *mdev)
 
 	for (i = 0; i < mdev->n_pipelines; i++) {
 		pipe = mdev->pipelines[i];
+
 		dp_for_each_set_bit(id, pipe->avail_comps) {
 			c = komeda_pipeline_get_component(pipe, id);
 
 			drm_atomic_private_obj_fini(&c->obj);
 		}
+
 		drm_atomic_private_obj_fini(&pipe->obj);
 	}
 }
-- 
2.17.1