drivers/tty/serial/liteuart.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/liteuart.c

Extension

.c

Size

11374 bytes

Lines

479

Domain

Driver Families

Bucket

drivers/tty

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• 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.
• 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/bits.h
• linux/console.h
• linux/interrupt.h
• linux/litex.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/serial.h
• linux/serial_core.h
• linux/slab.h
• linux/timer.h
• linux/tty_flip.h
• linux/xarray.h

Detected Declarations

• struct liteuart_port
• function liteuart_update_irq_reg
• function liteuart_stop_tx
• function liteuart_start_tx
• function liteuart_stop_rx
• function liteuart_rx_chars
• function liteuart_tx_chars
• function liteuart_interrupt
• function liteuart_timer
• function liteuart_tx_empty
• function liteuart_set_mctrl
• function liteuart_startup
• function liteuart_shutdown
• function liteuart_set_termios
• function liteuart_config_port
• function liteuart_verify_port
• function liteuart_probe
• function liteuart_remove
• function liteuart_putchar
• function liteuart_console_write
• function liteuart_console_setup
• function liteuart_console_init
• function early_liteuart_write
• function early_liteuart_setup
• function liteuart_init
• function liteuart_exit
• module init liteuart_init

Annotated Snippet

module_init(liteuart_init);
module_exit(liteuart_exit);

MODULE_AUTHOR("Antmicro <www.antmicro.com>");
MODULE_DESCRIPTION("LiteUART serial driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:liteuart");

Annotation

• Immediate include surface: `linux/bits.h`, `linux/console.h`, `linux/interrupt.h`, `linux/litex.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`, `linux/serial.h`.
• Detected declarations: `struct liteuart_port`, `function liteuart_update_irq_reg`, `function liteuart_stop_tx`, `function liteuart_start_tx`, `function liteuart_stop_rx`, `function liteuart_rx_chars`, `function liteuart_tx_chars`, `function liteuart_interrupt`, `function liteuart_timer`, `function liteuart_tx_empty`.
• Atlas domain: Driver Families / drivers/tty.
• 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.