drivers/comedi/drivers/das16.c

File Facts

System

Linux kernel

Corpus path

drivers/comedi/drivers/das16.c

Extension

.c

Size

30904 bytes

Lines

1221

Domain

Driver Families

Bucket

drivers/comedi

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/slab.h
• linux/interrupt.h
• linux/comedi/comedidev.h
• linux/comedi/comedi_8255.h
• linux/comedi/comedi_8254.h
• linux/comedi/comedi_isadma.h

Detected Declarations

• struct das16_board
• struct das16_private_struct
• function timer_period
• function das16_ai_setup_dma
• function das16_interrupt
• function das16_timer_interrupt
• function das16_ai_set_mux_range
• function das16_ai_check_chanlist
• function das16_cmd_test
• function das16_set_pacer
• function das16_cmd_exec
• function das16_cancel
• function das16_ai_munge
• function das16_ai_eoc
• function das16_ai_insn_read
• function das16_ao_insn_write
• function das16_di_insn_bits
• function das16_do_insn_bits
• function das16_probe
• function das16_reset
• function das16_alloc_dma
• function das16_free_dma
• function das16_attach
• function das16_detach

Annotated Snippet

struct das16_board {
	const char *name;
	unsigned int ai_maxdata;
	unsigned int ai_speed;	/*  max conversion speed in nanosec */
	unsigned int ai_pg;
	unsigned int has_ao:1;
	unsigned int has_8255:1;

	unsigned int i8255_offset;

	unsigned int size;
	unsigned int id;
};

static const struct das16_board das16_boards[] = {
	{
		.name		= "das-16",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 15000,
		.ai_pg		= das16_pg_none,
		.has_ao		= 1,
		.has_8255	= 1,
		.i8255_offset	= 0x10,
		.size		= 0x14,
		.id		= 0x00,
	}, {
		.name		= "das-16g",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 15000,
		.ai_pg		= das16_pg_none,
		.has_ao		= 1,
		.has_8255	= 1,
		.i8255_offset	= 0x10,
		.size		= 0x14,
		.id		= 0x00,
	}, {
		.name		= "das-16f",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 8500,
		.ai_pg		= das16_pg_none,
		.has_ao		= 1,
		.has_8255	= 1,
		.i8255_offset	= 0x10,
		.size		= 0x14,
		.id		= 0x00,
	}, {
		.name		= "cio-das16",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 20000,
		.ai_pg		= das16_pg_none,
		.has_ao		= 1,
		.has_8255	= 1,
		.i8255_offset	= 0x10,
		.size		= 0x14,
		.id		= 0x80,
	}, {
		.name		= "cio-das16/f",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 10000,
		.ai_pg		= das16_pg_none,
		.has_ao		= 1,
		.has_8255	= 1,
		.i8255_offset	= 0x10,
		.size		= 0x14,
		.id		= 0x80,
	}, {
		.name		= "cio-das16/jr",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 7692,
		.ai_pg		= das16_pg_16jr,
		.size		= 0x10,
		.id		= 0x00,
	}, {
		.name		= "pc104-das16jr",
		.ai_maxdata	= 0x0fff,
		.ai_speed	= 3300,
		.ai_pg		= das16_pg_16jr,
		.size		= 0x10,
		.id		= 0x00,
	}, {
		.name		= "cio-das16jr/16",
		.ai_maxdata	= 0xffff,
		.ai_speed	= 10000,
		.ai_pg		= das16_pg_16jr_16,
		.size		= 0x10,
		.id		= 0x00,
	}, {
		.name		= "pc104-das16jr/16",
		.ai_maxdata	= 0xffff,
		.ai_speed	= 10000,

Annotation

• Immediate include surface: `linux/module.h`, `linux/slab.h`, `linux/interrupt.h`, `linux/comedi/comedidev.h`, `linux/comedi/comedi_8255.h`, `linux/comedi/comedi_8254.h`, `linux/comedi/comedi_isadma.h`.
• Detected declarations: `struct das16_board`, `struct das16_private_struct`, `function timer_period`, `function das16_ai_setup_dma`, `function das16_interrupt`, `function das16_timer_interrupt`, `function das16_ai_set_mux_range`, `function das16_ai_check_chanlist`, `function das16_cmd_test`, `function das16_set_pacer`.
• Atlas domain: Driver Families / drivers/comedi.
• 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.