drivers/misc/keba/cp500.c

File Facts

System

Linux kernel

Corpus path

drivers/misc/keba/cp500.c

Extension

.c

Size

25336 bytes

Lines

990

Domain

Driver Families

Bucket

drivers/misc

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.
• 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/device.h
• linux/i2c.h
• linux/misc/keba.h
• linux/module.h
• linux/mtd/partitions.h
• linux/nvmem-consumer.h
• linux/nvmem-provider.h
• linux/pci.h
• linux/spi/flash.h
• linux/spi/spi.h

Detected Declarations

• struct cp500_dev_info
• struct cp500_devs
• struct cp500_nvmem
• struct cp500
• function cp500_get_fpga_version
• function version_show
• function keep_cfg_show
• function keep_cfg_store
• function cp500_i2c_release
• function cp500_register_i2c
• function cp500_spi_release
• function cp500_register_spi
• function cp500_fan_release
• function cp500_register_fan
• function cp500_batt_release
• function cp500_register_batt
• function cp500_uart_release
• function cp500_register_uart
• function cp500_nvmem_read
• function cp500_nvmem_write
• function cp500_nvmem_register
• function cp500_nvmem_unregister
• function cp500_nvmem_match
• function cp500_nvmem
• function cp500_register_auxiliary_devs
• function cp500_unregister_dev
• function cp500_unregister_auxiliary_devs
• function cp500_axi_handler
• function cp500_enable
• function cp500_disable
• function cp500_probe
• function cp500_remove

Annotated Snippet

static struct pci_driver cp500_driver = {
	.name = CP500,
	.id_table = cp500_ids,
	.probe = cp500_probe,
	.remove = cp500_remove,
	.dev_groups = cp500_groups,
};
module_pci_driver(cp500_driver);

MODULE_AUTHOR("Gerhard Engleder <eg@keba.com>");
MODULE_DESCRIPTION("KEBA CP500 system FPGA driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/device.h`, `linux/i2c.h`, `linux/misc/keba.h`, `linux/module.h`, `linux/mtd/partitions.h`, `linux/nvmem-consumer.h`, `linux/nvmem-provider.h`, `linux/pci.h`.
• Detected declarations: `struct cp500_dev_info`, `struct cp500_devs`, `struct cp500_nvmem`, `struct cp500`, `function cp500_get_fpga_version`, `function version_show`, `function keep_cfg_show`, `function keep_cfg_store`, `function cp500_i2c_release`, `function cp500_register_i2c`.
• Atlas domain: Driver Families / drivers/misc.
• 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.