drivers/comedi/drivers/rtd520.c

File Facts

System

Linux kernel

Corpus path

drivers/comedi/drivers/rtd520.c

Extension

.c

Size

39660 bytes

Lines

1365

Domain

Driver Families

Bucket

drivers/comedi

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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/module.h
• linux/delay.h
• linux/interrupt.h
• linux/comedi/comedi_pci.h
• linux/comedi/comedi_8254.h
• plx9080.h

Detected Declarations

• struct rtd_boardinfo
• struct rtd_private
• enum rtd_boardid
• function period
• function period
• function rtd_convert_chan_gain
• function rtd_load_channelgain_list
• function rtd520_probe_fifo_depth
• function rtd_ai_eoc
• function rtd_ai_rinsn
• function ai_read_n
• function rtd_interrupt
• function rtd_ai_cmdtest
• function rtd_ai_cmd
• function rtd_ai_cancel
• function rtd_ao_eoc
• function rtd_ao_insn_write
• function rtd_dio_insn_bits
• function rtd_dio_insn_config
• function rtd_counter_insn_config
• function rtd_reset
• function rtd_init_board
• function rtd_pci_latency_quirk
• function rtd_auto_attach
• function rtd_detach
• function rtd520_pci_probe

Annotated Snippet

static struct pci_driver rtd520_pci_driver = {
	.name		= "rtd520",
	.id_table	= rtd520_pci_table,
	.probe		= rtd520_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(rtd520_driver, rtd520_pci_driver);

MODULE_AUTHOR("Comedi https://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/delay.h`, `linux/interrupt.h`, `linux/comedi/comedi_pci.h`, `linux/comedi/comedi_8254.h`, `plx9080.h`.
• Detected declarations: `struct rtd_boardinfo`, `struct rtd_private`, `enum rtd_boardid`, `function period`, `function period`, `function rtd_convert_chan_gain`, `function rtd_load_channelgain_list`, `function rtd520_probe_fifo_depth`, `function rtd_ai_eoc`, `function rtd_ai_rinsn`.
• Atlas domain: Driver Families / drivers/comedi.
• Implementation status: pattern implementation candidate.
• 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.