drivers/tty/serial/pxa.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/pxa.c

Extension

.c

Size

21849 bytes

Lines

904

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/ioport.h
• linux/init.h
• linux/console.h
• linux/sysrq.h
• linux/serial.h
• linux/serial_reg.h
• linux/circ_buf.h
• linux/delay.h
• linux/interrupt.h
• linux/of.h
• linux/platform_device.h
• linux/tty.h
• linux/tty_flip.h
• linux/serial_core.h
• linux/clk.h
• linux/io.h
• linux/slab.h

Detected Declarations

• struct uart_pxa_port
• function serial_in
• function serial_out
• function serial_pxa_enable_ms
• function serial_pxa_stop_tx
• function serial_pxa_stop_rx
• function receive_chars
• function transmit_chars
• function serial_pxa_start_tx
• function check_modem_status
• function serial_pxa_irq
• function serial_pxa_tx_empty
• function serial_pxa_get_mctrl
• function serial_pxa_set_mctrl
• function serial_pxa_break_ctl
• function serial_pxa_startup
• function serial_pxa_shutdown
• function serial_pxa_set_termios
• function serial_pxa_pm
• function serial_pxa_release_port
• function serial_pxa_config_port
• function serial_pxa_verify_port
• function serial_pxa_type
• function wait_for_xmitr
• function serial_pxa_console_putchar
• function serial_pxa_console_write
• function serial_pxa_get_poll_char
• function serial_pxa_put_poll_char
• function serial_pxa_console_setup
• function serial_pxa_suspend
• function serial_pxa_resume
• function serial_pxa_probe_dt
• function serial_pxa_probe
• function serial_pxa_init
• module init serial_pxa_init

Annotated Snippet

device_initcall(serial_pxa_init);

Annotation

• Immediate include surface: `linux/ioport.h`, `linux/init.h`, `linux/console.h`, `linux/sysrq.h`, `linux/serial.h`, `linux/serial_reg.h`, `linux/circ_buf.h`, `linux/delay.h`.
• Detected declarations: `struct uart_pxa_port`, `function serial_in`, `function serial_out`, `function serial_pxa_enable_ms`, `function serial_pxa_stop_tx`, `function serial_pxa_stop_rx`, `function receive_chars`, `function transmit_chars`, `function serial_pxa_start_tx`, `function check_modem_status`.
• 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.