drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/arm/display/komeda/komeda_private_obj.c

Extension

.c

Size

12807 bytes

Lines

513

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• komeda_dev.h
• komeda_kms.h

Detected Declarations

• function komeda_component_state_reset
• function komeda_layer_atomic_duplicate_state
• function komeda_layer_atomic_destroy_state
• function komeda_layer_atomic_create_state
• function komeda_layer_obj_add
• function komeda_scaler_atomic_duplicate_state
• function komeda_scaler_atomic_destroy_state
• function komeda_scaler_atomic_create_state
• function komeda_scaler_obj_add
• function komeda_compiz_atomic_duplicate_state
• function komeda_compiz_atomic_destroy_state
• function komeda_compiz_atomic_create_state
• function komeda_compiz_obj_add
• function komeda_splitter_atomic_duplicate_state
• function komeda_splitter_atomic_destroy_state
• function komeda_splitter_atomic_create_state
• function komeda_splitter_obj_add
• function komeda_merger_atomic_duplicate_state
• function komeda_merger_atomic_destroy_state
• function komeda_merger_atomic_create_state
• function komeda_merger_obj_add
• function komeda_improc_atomic_duplicate_state
• function komeda_improc_atomic_destroy_state
• function komeda_improc_atomic_create_state
• function komeda_improc_obj_add
• function komeda_timing_ctrlr_atomic_duplicate_state
• function komeda_timing_ctrlr_atomic_destroy_state
• function komeda_timing_ctrlr_atomic_create_state
• function komeda_timing_ctrlr_obj_add
• function komeda_pipeline_atomic_duplicate_state
• function komeda_pipeline_atomic_destroy_state
• function komeda_pipeline_atomic_create_state
• function komeda_pipeline_obj_add
• function komeda_kms_add_private_objs
• function komeda_kms_cleanup_private_objs

Annotated Snippet

if (pipe->wb_layer) {
			err = komeda_layer_obj_add(kms, pipe->wb_layer);
			if (err)
				return err;
		}

		for (j = 0; j < pipe->n_scalers; j++) {
			err = komeda_scaler_obj_add(kms, pipe->scalers[j]);
			if (err)
				return err;
		}

		err = komeda_compiz_obj_add(kms, pipe->compiz);
		if (err)
			return err;

		if (pipe->splitter) {
			err = komeda_splitter_obj_add(kms, pipe->splitter);
			if (err)
				return err;
		}

		if (pipe->merger) {
			err = komeda_merger_obj_add(kms, pipe->merger);
			if (err)
				return err;
		}

		err = komeda_improc_obj_add(kms, pipe->improc);
		if (err)
			return err;

		err = komeda_timing_ctrlr_obj_add(kms, pipe->ctrlr);
		if (err)
			return err;
	}

	return 0;
}

void komeda_kms_cleanup_private_objs(struct komeda_kms_dev *kms)
{
	struct drm_mode_config *config = &kms->base.mode_config;
	struct drm_private_obj *obj, *next;

	list_for_each_entry_safe(obj, next, &config->privobj_list, head)
		drm_atomic_private_obj_fini(obj);
}

Annotation

• Immediate include surface: `komeda_dev.h`, `komeda_kms.h`.
• Detected declarations: `function komeda_component_state_reset`, `function komeda_layer_atomic_duplicate_state`, `function komeda_layer_atomic_destroy_state`, `function komeda_layer_atomic_create_state`, `function komeda_layer_obj_add`, `function komeda_scaler_atomic_duplicate_state`, `function komeda_scaler_atomic_destroy_state`, `function komeda_scaler_atomic_create_state`, `function komeda_scaler_obj_add`, `function komeda_compiz_atomic_duplicate_state`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.