drivers/tty/serial/fsl_linflexuart.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/fsl_linflexuart.c

Extension

.c

Size

22354 bytes

Lines

919

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/console.h
• linux/io.h
• linux/irq.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/serial_core.h
• linux/slab.h
• linux/tty_flip.h
• linux/delay.h

Detected Declarations

• function linflex_stop_tx
• function linflex_stop_rx
• function linflex_put_char
• function linflex_transmit_buffer
• function linflex_start_tx
• function linflex_txint
• function linflex_rxint
• function linflex_int
• function linflex_tx_empty
• function linflex_get_mctrl
• function linflex_set_mctrl
• function linflex_startup
• function linflex_shutdown
• function linflex_set_termios
• function linflex_release_port
• function linflex_config_port
• function linflex_console_putchar
• function linflex_earlycon_putchar
• function linflex_string_write
• function linflex_console_write
• function initialised
• function linflex_console_setup
• function linflex_earlycon_write
• function linflex_early_console_setup
• function linflex_probe
• function linflex_remove
• function linflex_suspend
• function linflex_resume
• function linflex_serial_init
• function linflex_serial_exit
• module init linflex_serial_init

Annotated Snippet

module_init(linflex_serial_init);
module_exit(linflex_serial_exit);

MODULE_DESCRIPTION("Freescale LINFlexD serial port driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/console.h`, `linux/io.h`, `linux/irq.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`, `linux/serial_core.h`, `linux/slab.h`.
• Detected declarations: `function linflex_stop_tx`, `function linflex_stop_rx`, `function linflex_put_char`, `function linflex_transmit_buffer`, `function linflex_start_tx`, `function linflex_txint`, `function linflex_rxint`, `function linflex_int`, `function linflex_tx_empty`, `function linflex_get_mctrl`.
• 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.