drivers/gpu/drm/ingenic/ingenic-drm-drv.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/ingenic/ingenic-drm-drv.c

Extension

.c

Size

47143 bytes

Lines

1682

Domain

Driver Families

Bucket

drivers/gpu

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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

• ingenic-drm.h
• linux/bitfield.h
• linux/component.h
• linux/clk.h
• linux/dma-mapping.h
• linux/io.h
• linux/media-bus-format.h
• linux/module.h
• linux/mutex.h
• linux/of.h
• linux/of_reserved_mem.h
• linux/platform_device.h
• linux/pm.h
• linux/regmap.h
• drm/clients/drm_client_setup.h
• drm/drm_atomic.h
• drm/drm_atomic_helper.h
• drm/drm_bridge.h
• drm/drm_bridge_connector.h
• drm/drm_color_mgmt.h
• drm/drm_crtc.h
• drm/drm_damage_helper.h
• drm/drm_drv.h
• drm/drm_encoder.h
• drm/drm_gem_dma_helper.h
• drm/drm_fb_dma_helper.h
• drm/drm_fbdev_dma.h
• drm/drm_fourcc.h
• drm/drm_framebuffer.h
• drm/drm_gem_atomic_helper.h
• drm/drm_gem_framebuffer_helper.h
• drm/drm_managed.h

Detected Declarations

• struct ingenic_dma_hwdesc
• struct ingenic_dma_hwdescs
• struct jz_soc_info
• struct ingenic_drm_private_state
• struct ingenic_drm
• struct ingenic_drm_bridge
• function to_ingenic_drm_bridge
• function to_ingenic_drm_priv_state
• function ingenic_drm_get_priv_state
• function ingenic_drm_get_new_priv_state
• function ingenic_drm_writeable_reg
• function dma_hwdesc_addr
• function ingenic_drm_update_pixclk
• function ingenic_drm_bridge_atomic_enable
• function ingenic_drm_crtc_atomic_enable
• function ingenic_drm_bridge_atomic_disable
• function ingenic_drm_crtc_atomic_disable
• function ingenic_drm_crtc_update_timings
• function ingenic_drm_crtc_atomic_check
• function ingenic_drm_crtc_mode_valid
• function ingenic_drm_crtc_atomic_begin
• function ingenic_drm_crtc_atomic_flush
• function ingenic_drm_plane_atomic_check
• function ingenic_drm_plane_enable
• function ingenic_drm_plane_disable
• function ingenic_drm_plane_atomic_disable
• function ingenic_drm_plane_config
• function ingenic_drm_map_noncoherent
• function ingenic_drm_update_palette
• function ingenic_drm_plane_atomic_update
• function ingenic_drm_encoder_atomic_mode_set
• function ingenic_drm_bridge_attach
• function ingenic_drm_bridge_atomic_check
• function ingenic_drm_bridge_atomic_get_input_bus_fmts
• function ingenic_drm_irq_handler
• function ingenic_drm_enable_vblank
• function ingenic_drm_disable_vblank
• function ingenic_drm_gem_fb_create
• function ingenic_drm_gem_create_object
• function ingenic_drm_duplicate_state
• function ingenic_drm_destroy_state
• function ingenic_drm_create_state
• function ingenic_drm_unbind_all
• function ingenic_drm_release_rmem
• function ingenic_drm_configure_hwdesc
• function ingenic_drm_configure_hwdesc_palette
• function ingenic_drm_configure_hwdesc_plane
• function ingenic_drm_atomic_private_obj_fini

Annotated Snippet

module_init(ingenic_drm_init);

static void ingenic_drm_exit(void)
{
	platform_driver_unregister(&ingenic_drm_driver);

	if (IS_ENABLED(CONFIG_DRM_INGENIC_IPU))
		platform_driver_unregister(ingenic_ipu_driver_ptr);
}
module_exit(ingenic_drm_exit);

MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
MODULE_DESCRIPTION("DRM driver for the Ingenic SoCs\n");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `ingenic-drm.h`, `linux/bitfield.h`, `linux/component.h`, `linux/clk.h`, `linux/dma-mapping.h`, `linux/io.h`, `linux/media-bus-format.h`, `linux/module.h`.
• Detected declarations: `struct ingenic_dma_hwdesc`, `struct ingenic_dma_hwdescs`, `struct jz_soc_info`, `struct ingenic_drm_private_state`, `struct ingenic_drm`, `struct ingenic_drm_bridge`, `function to_ingenic_drm_bridge`, `function to_ingenic_drm_priv_state`, `function ingenic_drm_get_priv_state`, `function ingenic_drm_get_new_priv_state`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.