drivers/tty/serial/arc_uart.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/arc_uart.c

Extension

.c

Size

17387 bytes

Lines

672

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.
• 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/serial.h
• linux/console.h
• linux/sysrq.h
• linux/platform_device.h
• linux/tty.h
• linux/tty_flip.h
• linux/serial_core.h
• linux/io.h
• linux/of_irq.h
• linux/of_address.h

Detected Declarations

• struct arc_uart_port
• function arc_serial_stop_rx
• function arc_serial_stop_tx
• function arc_serial_tx_empty
• function arc_serial_tx_chars
• function uart_start
• function arc_serial_rx_chars
• function err
• function interrupts
• function Rx
• function arc_serial_get_mctrl
• function arc_serial_set_mctrl
• function arc_serial_shutdown
• function arc_serial_set_termios
• function arc_serial_release_port
• function serial_struct
• function arc_serial_config_port
• function arc_serial_poll_putchar
• function arc_serial_poll_getchar
• function arc_serial_console_setup
• function arc_serial_console_putchar
• function arc_serial_console_write
• function arc_early_serial_write
• function arc_early_console_setup
• function arc_serial_probe
• function arc_serial_init
• function arc_serial_exit
• module init arc_serial_init

Annotated Snippet

module_init(arc_serial_init);
module_exit(arc_serial_exit);

MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRIVER_NAME);
MODULE_AUTHOR("Vineet Gupta");
MODULE_DESCRIPTION("ARC(Synopsys) On-Chip(fpga) serial driver");

Annotation

• Immediate include surface: `linux/module.h`, `linux/serial.h`, `linux/console.h`, `linux/sysrq.h`, `linux/platform_device.h`, `linux/tty.h`, `linux/tty_flip.h`, `linux/serial_core.h`.
• Detected declarations: `struct arc_uart_port`, `function arc_serial_stop_rx`, `function arc_serial_stop_tx`, `function arc_serial_tx_empty`, `function arc_serial_tx_chars`, `function uart_start`, `function arc_serial_rx_chars`, `function err`, `function interrupts`, `function Rx`.
• Atlas domain: Driver Families / drivers/tty.
• Implementation status: integration implementation candidate.
• 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.