drivers/tty/serial/lantiq.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/lantiq.c

Extension

.c

Size

22679 bytes

Lines

950

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/bitfield.h
• linux/clk.h
• linux/console.h
• linux/device.h
• linux/init.h
• linux/io.h
• linux/ioport.h
• linux/lantiq.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/serial.h
• linux/serial_core.h
• linux/slab.h
• linux/sysrq.h
• linux/tty.h
• linux/tty_flip.h

Detected Declarations

• struct ltq_soc_data
• struct ltq_uart_port
• function asc_update_bits
• function lqasc_stop_tx
• function lqasc_tx_ready
• function lqasc_start_tx
• function lqasc_stop_rx
• function lqasc_rx_chars
• function lqasc_tx_int
• function lqasc_err_int
• function lqasc_rx_int
• function lqasc_irq
• function lqasc_tx_empty
• function lqasc_get_mctrl
• function lqasc_set_mctrl
• function lqasc_shutdown
• function lqasc_set_termios
• function lqasc_type
• function lqasc_release_port
• function lqasc_request_port
• function lqasc_config_port
• function lqasc_verify_port
• function lqasc_console_putchar
• function lqasc_serial_port_write
• function lqasc_console_write
• function lqasc_console_setup
• function lqasc_console_init
• function lqasc_serial_early_console_write
• function lqasc_serial_early_console_setup
• function fetch_irq_lantiq
• function request_irq_lantiq
• function free_irq_lantiq
• function fetch_irq_intel
• function request_irq_intel
• function free_irq_intel
• function lqasc_probe
• function lqasc_remove
• function init_lqasc
• function exit_lqasc
• module init init_lqasc

Annotated Snippet

module_init(init_lqasc);
module_exit(exit_lqasc);

MODULE_DESCRIPTION("Serial driver for Lantiq & Intel gateway SoCs");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/bitfield.h`, `linux/clk.h`, `linux/console.h`, `linux/device.h`, `linux/init.h`, `linux/io.h`, `linux/ioport.h`, `linux/lantiq.h`.
• Detected declarations: `struct ltq_soc_data`, `struct ltq_uart_port`, `function asc_update_bits`, `function lqasc_stop_tx`, `function lqasc_tx_ready`, `function lqasc_start_tx`, `function lqasc_stop_rx`, `function lqasc_rx_chars`, `function lqasc_tx_int`, `function lqasc_err_int`.
• 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.