drivers/tty/serial/st-asc.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/st-asc.c

Extension

.c

Size

23819 bytes

Lines

977

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.
• 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/pinctrl/consumer.h
• linux/platform_device.h
• linux/io.h
• linux/irq.h
• linux/tty.h
• linux/tty_flip.h
• linux/delay.h
• linux/spinlock.h
• linux/of.h
• linux/of_platform.h
• linux/serial_core.h
• linux/clk.h
• linux/gpio/consumer.h

Detected Declarations

• struct asc_port
• function asc_in
• function asc_out
• function asc_disable_tx_interrupts
• function asc_enable_tx_interrupts
• function asc_disable_rx_interrupts
• function asc_enable_rx_interrupts
• function asc_txfifo_is_empty
• function asc_txfifo_is_half_empty
• function asc_hw_txroom
• function asc_transmit_chars
• function asc_receive_chars
• function asc_interrupt
• function asc_tx_empty
• function asc_set_mctrl
• function asc_get_mctrl
• function asc_start_tx
• function asc_stop_tx
• function asc_stop_rx
• function asc_break_ctl
• function asc_shutdown
• function asc_pm
• function asc_set_termios
• function asc_release_port
• function asc_config_port
• function asc_verify_port
• function context
• function asc_put_poll_char
• function asc_init_port
• function asc_serial_probe
• function asc_serial_remove
• function asc_serial_suspend
• function asc_serial_resume
• function asc_console_putchar
• function asc_console_write
• function asc_console_setup
• function asc_init
• function asc_exit
• module init asc_init

Annotated Snippet

module_init(asc_init);
module_exit(asc_exit);

MODULE_ALIAS("platform:" DRIVER_NAME);
MODULE_AUTHOR("STMicroelectronics (R&D) Limited");
MODULE_DESCRIPTION("STMicroelectronics ASC serial port driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/serial.h`, `linux/console.h`, `linux/sysrq.h`, `linux/pinctrl/consumer.h`, `linux/platform_device.h`, `linux/io.h`, `linux/irq.h`.
• Detected declarations: `struct asc_port`, `function asc_in`, `function asc_out`, `function asc_disable_tx_interrupts`, `function asc_enable_tx_interrupts`, `function asc_disable_rx_interrupts`, `function asc_enable_rx_interrupts`, `function asc_txfifo_is_empty`, `function asc_txfifo_is_half_empty`, `function asc_hw_txroom`.
• 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.