include/linux/comedi/comedidev.h

File Facts

System

Linux kernel

Corpus path

include/linux/comedi/comedidev.h

Extension

.h

Size

43534 bytes

Lines

1100

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/dma-mapping.h
• linux/mutex.h
• linux/spinlock_types.h
• linux/rwsem.h
• linux/kref.h
• linux/completion.h
• linux/comedi.h

Detected Declarations

• struct comedi_subdevice
• struct comedi_buf_page
• struct comedi_buf_map
• struct comedi_async
• struct comedi_driver
• struct comedi_device
• struct comedi_lrange
• enum comedi_cb
• function comedi_range_is_bipolar
• function comedi_range_is_unipolar
• function comedi_range_is_external
• function comedi_chan_range_is_bipolar
• function comedi_chan_range_is_unipolar
• function comedi_chan_range_is_external
• function comedi_offset_munge
• function comedi_bytes_per_sample
• function comedi_sample_shift
• function comedi_bytes_to_samples
• function comedi_samples_to_bytes
• function comedi_check_trigger_src
• function comedi_check_trigger_is_unique
• function comedi_check_trigger_arg_is
• function comedi_check_trigger_arg_min
• function comedi_check_trigger_arg_max
• function comedi_buf_n_bytes_ready
• function __comedi_request_region
• function comedi_request_region

Annotated Snippet

* this macro once, and calling it replaces module_init() and module_exit().
 */
#define module_comedi_driver(__comedi_driver) \
	module_driver(__comedi_driver, comedi_driver_register, \
			comedi_driver_unregister)

#endif /* _COMEDIDEV_H */

Annotation

• Immediate include surface: `linux/dma-mapping.h`, `linux/mutex.h`, `linux/spinlock_types.h`, `linux/rwsem.h`, `linux/kref.h`, `linux/completion.h`, `linux/comedi.h`.
• Detected declarations: `struct comedi_subdevice`, `struct comedi_buf_page`, `struct comedi_buf_map`, `struct comedi_async`, `struct comedi_driver`, `struct comedi_device`, `struct comedi_lrange`, `enum comedi_cb`, `function comedi_range_is_bipolar`, `function comedi_range_is_unipolar`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.