drivers/comedi/drivers/s626.c

File Facts

System

Linux kernel

Corpus path

drivers/comedi/drivers/s626.c

Extension

.c

Size

76639 bytes

Lines

2605

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.
• 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/module.h
• linux/delay.h
• linux/interrupt.h
• linux/kernel.h
• linux/types.h
• linux/comedi/comedi_pci.h
• s626.h

Detected Declarations

• struct s626_buffer_dma
• struct s626_private
• function s626_mc_enable
• function s626_mc_disable
• function s626_mc_test
• function s626_debi_transfer
• function s626_debi_read
• function s626_debi_write
• function s626_debi_replace
• function s626_i2c_handshake_eoc
• function s626_i2c_handshake
• function s626_i2c_read
• function s626_send_dac_eoc
• function s626_send_dac
• function s626_set_dac
• function s626_write_trim_dac
• function s626_load_trim_dacs
• function s626_set_latch_source
• function s626_preload
• function s626_reset_cap_flags
• function programmable
• function s626_set_mode_b
• function s626_set_mode
• function s626_set_enable
• function s626_set_load_trig
• function s626_set_int_src
• function s626_pulse_index
• function s626_ai_reg_to_uint
• function s626_dio_set_irq
• function s626_dio_reset_irq
• function s626_dio_clear_irq
• function s626_handle_dio_interrupt
• function s626_check_dio_interrupts
• function s626_check_counter_interrupts
• function s626_handle_eos_interrupt
• function s626_irq_handler
• function s626_reset_adc
• function s626_ai_eoc
• function s626_ai_insn_read
• function s626_ai_load_polllist
• function s626_ai_inttrig
• function s626_ns_to_timer
• function s626_timer_load
• function s626_ai_cmd
• function s626_ai_cmdtest
• function s626_ai_cancel
• function s626_ao_insn_write
• function s626_dio_init

Annotated Snippet

static struct pci_driver s626_pci_driver = {
	.name		= "s626",
	.id_table	= s626_pci_table,
	.probe		= s626_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(s626_driver, s626_pci_driver);

MODULE_AUTHOR("Gianluca Palli <gpalli@deis.unibo.it>");
MODULE_DESCRIPTION("Sensoray 626 Comedi driver module");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/delay.h`, `linux/interrupt.h`, `linux/kernel.h`, `linux/types.h`, `linux/comedi/comedi_pci.h`, `s626.h`.
• Detected declarations: `struct s626_buffer_dma`, `struct s626_private`, `function s626_mc_enable`, `function s626_mc_disable`, `function s626_mc_test`, `function s626_debi_transfer`, `function s626_debi_read`, `function s626_debi_write`, `function s626_debi_replace`, `function s626_i2c_handshake_eoc`.
• Atlas domain: Driver Families / drivers/comedi.
• Implementation status: pattern 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.