drivers/gpu/ipu-v3/ipu-common.c

File Facts

System

Linux kernel

Corpus path

drivers/gpu/ipu-v3/ipu-common.c

Extension

.c

Size

35703 bytes

Lines

1459

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.
• 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

• linux/module.h
• linux/export.h
• linux/types.h
• linux/reset.h
• linux/platform_device.h
• linux/err.h
• linux/spinlock.h
• linux/delay.h
• linux/interrupt.h
• linux/io.h
• linux/clk.h
• linux/list.h
• linux/irq.h
• linux/irqchip/chained_irq.h
• linux/irqdomain.h
• linux/of.h
• linux/of_graph.h
• drm/drm_fourcc.h
• video/imx-ipu-v3.h
• ipu-prv.h

Detected Declarations

• struct fsu_link_reg_info
• struct fsu_link_info
• struct ipu_devtype
• struct ipu_platform_reg
• function Copyright
• function ipu_cm_write
• function ipu_get_num
• function ipu_srm_dp_update
• function ipu_drm_fourcc_to_colorspace
• function ipu_pixelformat_to_colorspace
• function ipu_degrees_to_rot_mode
• function list_for_each_entry
• function ipu_idmac_put
• function enable
• function ipu_idmac_set_double_buffer
• function ipu_idmac_lock_enable
• function ipu_module_enable
• function ipu_module_disable
• function ipu_idmac_get_current_buffer
• function ipu_idmac_buffer_is_ready
• function ipu_idmac_select_buffer
• function ipu_idmac_clear_buffer
• function ipu_idmac_enable_channel
• function ipu_idmac_wait_busy
• function idma_mask
• function ipu_idmac_disable_channel
• function effect
• function ipu_memory_reset
• function ipu_set_csi_src_mux
• function ipu_set_ic_src_mux
• function ipu_fsu_link
• function ipu_fsu_unlink
• function ipu_idmac_link
• function ipu_idmac_unlink
• function ipu_submodules_init
• function ipu_irq_handle
• function ipu_irq_handler
• function ipu_err_irq_handler
• function ipu_map_irq
• function ipu_idmac_channel_irq
• function ipu_submodules_exit
• function platform_remove_devices_fn
• function platform_device_unregister_children
• function ipu_add_client_devices
• function ipu_irq_init
• function ipu_irq_exit
• function ipu_dump
• function ipu_probe

Annotated Snippet

module_init(imx_ipu_init);

static void __exit imx_ipu_exit(void)
{
	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
module_exit(imx_ipu_exit);

MODULE_ALIAS("platform:imx-ipuv3");
MODULE_DESCRIPTION("i.MX IPU v3 driver");
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/export.h`, `linux/types.h`, `linux/reset.h`, `linux/platform_device.h`, `linux/err.h`, `linux/spinlock.h`, `linux/delay.h`.
• Detected declarations: `struct fsu_link_reg_info`, `struct fsu_link_info`, `struct ipu_devtype`, `struct ipu_platform_reg`, `function Copyright`, `function ipu_cm_write`, `function ipu_get_num`, `function ipu_srm_dp_update`, `function ipu_drm_fourcc_to_colorspace`, `function ipu_pixelformat_to_colorspace`.
• 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.

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.