drivers/tty/serial/owl-uart.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/owl-uart.c

Extension

.c

Size

18307 bytes

Lines

766

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.
• 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/clk.h
• linux/console.h
• linux/delay.h
• linux/io.h
• linux/iopoll.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/serial.h
• linux/serial_core.h
• linux/tty.h
• linux/tty_flip.h

Detected Declarations

• struct owl_uart_info
• struct owl_uart_port
• function owl_uart_write
• function owl_uart_read
• function owl_uart_set_mctrl
• function owl_uart_get_mctrl
• function owl_uart_tx_empty
• function owl_uart_stop_rx
• function owl_uart_stop_tx
• function owl_uart_start_tx
• function owl_uart_send_chars
• function owl_uart_receive_chars
• function owl_uart_irq
• function owl_uart_shutdown
• function owl_uart_startup
• function owl_uart_change_baudrate
• function owl_uart_set_termios
• function owl_uart_release_port
• function owl_uart_request_port
• function owl_uart_verify_port
• function owl_uart_config_port
• function owl_uart_poll_get_char
• function owl_uart_poll_put_char
• function owl_console_putchar
• function owl_uart_port_write
• function owl_uart_console_write
• function owl_uart_console_setup
• function owl_uart_console_init
• function owl_uart_early_console_write
• function owl_uart_early_console_setup
• function owl_uart_probe
• function owl_uart_remove
• function owl_uart_init
• function owl_uart_exit
• module init owl_uart_init

Annotated Snippet

module_init(owl_uart_init);
module_exit(owl_uart_exit);

MODULE_DESCRIPTION("Actions Semi Owl family serial console");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/clk.h`, `linux/console.h`, `linux/delay.h`, `linux/io.h`, `linux/iopoll.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`.
• Detected declarations: `struct owl_uart_info`, `struct owl_uart_port`, `function owl_uart_write`, `function owl_uart_read`, `function owl_uart_set_mctrl`, `function owl_uart_get_mctrl`, `function owl_uart_tx_empty`, `function owl_uart_stop_rx`, `function owl_uart_stop_tx`, `function owl_uart_start_tx`.
• 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.