drivers/tty/serial/altera_uart.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/altera_uart.c

Extension

.c

Size

17466 bytes

Lines

653

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/kernel.h
• linux/init.h
• linux/timer.h
• linux/interrupt.h
• linux/module.h
• linux/console.h
• linux/tty.h
• linux/tty_flip.h
• linux/serial.h
• linux/serial_core.h
• linux/platform_device.h
• linux/of.h
• linux/io.h
• linux/altera_uart.h

Detected Declarations

• struct altera_uart
• function altera_uart_readl
• function altera_uart_writel
• function altera_uart_tx_empty
• function altera_uart_get_mctrl
• function altera_uart_update_ctrl_reg
• function altera_uart_set_mctrl
• function altera_uart_start_tx
• function altera_uart_stop_tx
• function altera_uart_stop_rx
• function altera_uart_break_ctl
• function altera_uart_set_termios
• function altera_uart_rx_chars
• function altera_uart_tx_chars
• function altera_uart_interrupt
• function altera_uart_timer
• function altera_uart_config_port
• function altera_uart_startup
• function altera_uart_shutdown
• function altera_uart_request_port
• function altera_uart_release_port
• function altera_uart_poll_get_char
• function altera_uart_poll_put_char
• function altera_uart_console_putc
• function altera_uart_console_write
• function altera_uart_console_setup
• function altera_uart_console_init
• function altera_uart_earlycon_write
• function altera_uart_earlycon_setup
• function altera_uart_probe
• function altera_uart_remove
• function altera_uart_init
• function altera_uart_exit
• module init altera_uart_init

Annotated Snippet

module_init(altera_uart_init);
module_exit(altera_uart_exit);

MODULE_DESCRIPTION("Altera UART driver");
MODULE_AUTHOR("Thomas Chou <thomas@wytron.com.tw>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" KBUILD_MODNAME);
MODULE_ALIAS_CHARDEV_MAJOR(SERIAL_ALTERA_MAJOR);

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/init.h`, `linux/timer.h`, `linux/interrupt.h`, `linux/module.h`, `linux/console.h`, `linux/tty.h`, `linux/tty_flip.h`.
• Detected declarations: `struct altera_uart`, `function altera_uart_readl`, `function altera_uart_writel`, `function altera_uart_tx_empty`, `function altera_uart_get_mctrl`, `function altera_uart_update_ctrl_reg`, `function altera_uart_set_mctrl`, `function altera_uart_start_tx`, `function altera_uart_stop_tx`, `function altera_uart_stop_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.