drivers/tty/serial/8250/8250_bcm7271.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/8250/8250_bcm7271.c

Extension

.c

Size

34136 bytes

Lines

1235

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/module.h
• linux/types.h
• linux/tty.h
• linux/errno.h
• linux/device.h
• linux/io.h
• linux/of.h
• linux/dma-mapping.h
• linux/tty_flip.h
• linux/delay.h
• linux/clk.h
• linux/debugfs.h
• linux/units.h
• 8250.h

Detected Declarations

• struct brcmuart_priv
• function udma_readl
• function udma_writel
• function udma_set
• function udma_unset
• function brcmuart_arbitration
• function brcmuart_init_dma_hardware
• function start_rx_dma
• function stop_rx_dma
• function stop_tx_dma
• function brcmuart_tx_dma
• function brcmuart_rx_buf_done_isr
• function brcmuart_rx_isr
• function brcmuart_tx_isr
• function brcmuart_isr
• function brcmuart_startup
• function brcmuart_shutdown
• function init_real_clk_rates
• function find_quot
• function set_clock_mux
• function brcmstb_set_termios
• function brcmuart_handle_irq
• function brcmuart_hrtimer_func
• function brcmuart_free_bufs
• function brcmuart_throttle
• function brcmuart_unthrottle
• function debugfs_stats_show
• function brcmuart_init_debugfs
• function brcmuart_probe
• function brcmuart_remove
• function brcmuart_suspend
• function brcmuart_resume
• function brcmuart_init
• function brcmuart_deinit
• module init brcmuart_init

Annotated Snippet

module_init(brcmuart_init);

static void __exit brcmuart_deinit(void)
{
	platform_driver_unregister(&brcmuart_platform_driver);
	debugfs_remove_recursive(brcmuart_debugfs_root);
}
module_exit(brcmuart_deinit);

MODULE_AUTHOR("Al Cooper");
MODULE_DESCRIPTION("Broadcom NS16550A compatible serial port driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/module.h`, `linux/types.h`, `linux/tty.h`, `linux/errno.h`, `linux/device.h`, `linux/io.h`, `linux/of.h`, `linux/dma-mapping.h`.
• Detected declarations: `struct brcmuart_priv`, `function udma_readl`, `function udma_writel`, `function udma_set`, `function udma_unset`, `function brcmuart_arbitration`, `function brcmuart_init_dma_hardware`, `function start_rx_dma`, `function stop_rx_dma`, `function stop_tx_dma`.
• 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.