drivers/tty/serial/qcom_geni_serial.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/serial/qcom_geni_serial.c

Extension

.c

Size

57916 bytes

Lines

2117

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/io.h
• linux/iopoll.h
• linux/irq.h
• linux/module.h
• linux/of.h
• linux/pm_domain.h
• linux/pm_opp.h
• linux/platform_device.h
• linux/pm_runtime.h
• linux/pm_wakeirq.h
• linux/soc/qcom/geni-se.h
• linux/serial.h
• linux/serial_core.h
• linux/slab.h
• linux/tty.h
• linux/tty_flip.h
• dt-bindings/interconnect/qcom,icc.h

Detected Declarations

• struct qcom_geni_device_data
• struct qcom_geni_private_data
• struct qcom_geni_serial_port
• function qcom_geni_set_rs485_mode
• function qcom_geni_serial_request_port
• function qcom_geni_serial_config_port
• function qcom_geni_serial_get_mctrl
• function qcom_geni_serial_set_mctrl
• function qcom_geni_serial_main_active
• function qcom_geni_serial_secondary_active
• function qcom_geni_serial_poll_bitfield
• function qcom_geni_serial_poll_bit
• function qcom_geni_serial_setup_tx
• function qcom_geni_serial_poll_tx_done
• function qcom_geni_serial_abort_rx
• function qcom_geni_serial_get_char
• function qcom_geni_serial_poll_put_char
• function qcom_geni_serial_poll_init
• function qcom_geni_serial_drain_fifo
• function qcom_geni_serial_wr_char
• function __qcom_geni_serial_console_write
• function qcom_geni_serial_console_write
• function handle_rx_console
• function handle_rx_console
• function qcom_geni_serial_tx_empty
• function qcom_geni_serial_stop_tx_dma
• function qcom_geni_serial_start_tx_dma
• function qcom_geni_serial_start_tx_fifo
• function qcom_geni_serial_stop_tx_fifo
• function __qcom_geni_serial_cancel_tx_cmd
• function qcom_geni_serial_cancel_tx_cmd
• function qcom_geni_serial_handle_rx_fifo
• function qcom_geni_serial_stop_rx_fifo
• function qcom_geni_serial_start_rx_fifo
• function qcom_geni_serial_stop_rx_dma
• function qcom_geni_serial_start_rx_dma
• function qcom_geni_serial_handle_rx_dma
• function qcom_geni_serial_start_rx
• function qcom_geni_serial_stop_rx
• function qcom_geni_serial_stop_tx
• function qcom_geni_serial_send_chunk_fifo
• function qcom_geni_serial_handle_tx_fifo
• function qcom_geni_serial_handle_tx_dma
• function qcom_geni_serial_isr
• function setup_fifos
• function qcom_geni_serial_shutdown
• function qcom_geni_serial_flush_buffer
• function qcom_geni_serial_port_setup

Annotated Snippet

module_init(qcom_geni_serial_init);

static void __exit qcom_geni_serial_exit(void)
{
	platform_driver_unregister(&qcom_geni_serial_platform_driver);
	console_unregister(&qcom_geni_console_driver);
	uart_unregister_driver(&qcom_geni_uart_driver);
}
module_exit(qcom_geni_serial_exit);

MODULE_DESCRIPTION("Serial driver for GENI based QUP cores");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/clk.h`, `linux/console.h`, `linux/io.h`, `linux/iopoll.h`, `linux/irq.h`, `linux/module.h`, `linux/of.h`, `linux/pm_domain.h`.
• Detected declarations: `struct qcom_geni_device_data`, `struct qcom_geni_private_data`, `struct qcom_geni_serial_port`, `function qcom_geni_set_rs485_mode`, `function qcom_geni_serial_request_port`, `function qcom_geni_serial_config_port`, `function qcom_geni_serial_get_mctrl`, `function qcom_geni_serial_set_mctrl`, `function qcom_geni_serial_main_active`, `function qcom_geni_serial_secondary_active`.
• 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.