drivers/spi/spi-fsl-spi.c

File Facts

System

Linux kernel

Corpus path

drivers/spi/spi-fsl-spi.c

Extension

.c

Size

20224 bytes

Lines

803

Domain

Driver Families

Bucket

drivers/spi

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/delay.h
• linux/dma-mapping.h
• linux/fsl_devices.h
• linux/gpio/consumer.h
• linux/interrupt.h
• linux/irq.h
• linux/kernel.h
• linux/mm.h
• linux/module.h
• linux/mutex.h
• linux/of.h
• linux/of_address.h
• linux/of_irq.h
• linux/of_platform.h
• linux/platform_device.h
• linux/spi/spi.h
• linux/spi/spi_bitbang.h
• linux/types.h
• sysdev/fsl_soc.h
• spi-fsl-lib.h
• spi-fsl-cpm.h
• spi-fsl-spi.h

Detected Declarations

• struct fsl_spi_match_data
• function fsl_spi_get_type
• function fsl_spi_change_mode
• function fsl_spi_qe_cpu_set_shifts
• function fsl_spi_grlib_set_shifts
• function mspi_apply_cpu_mode_quirks
• function fsl_spi_setup_transfer
• function fsl_spi_cpu_bufs
• function fsl_spi_bufs
• function fsl_spi_prepare_message
• function fsl_spi_transfer_one
• function fsl_spi_unprepare_message
• function fsl_spi_setup
• function fsl_spi_cleanup
• function fsl_spi_cpu_irq
• function fsl_spi_irq
• function fsl_spi_grlib_cs_control
• function fsl_spi_grlib_probe
• function fsl_spi_cs_control
• function of_fsl_spi_probe
• function of_fsl_spi_remove
• function plat_mpc8xxx_spi_probe
• function plat_mpc8xxx_spi_remove
• function legacy_driver_register
• function legacy_driver_unregister
• function legacy_driver_register
• function fsl_spi_exit
• module init fsl_spi_init

Annotated Snippet

module_init(fsl_spi_init);

static void __exit fsl_spi_exit(void)
{
	platform_driver_unregister(&of_fsl_spi_driver);
	legacy_driver_unregister();
}
module_exit(fsl_spi_exit);

MODULE_AUTHOR("Kumar Gala");
MODULE_DESCRIPTION("Simple Freescale SPI Driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/dma-mapping.h`, `linux/fsl_devices.h`, `linux/gpio/consumer.h`, `linux/interrupt.h`, `linux/irq.h`, `linux/kernel.h`, `linux/mm.h`.
• Detected declarations: `struct fsl_spi_match_data`, `function fsl_spi_get_type`, `function fsl_spi_change_mode`, `function fsl_spi_qe_cpu_set_shifts`, `function fsl_spi_grlib_set_shifts`, `function mspi_apply_cpu_mode_quirks`, `function fsl_spi_setup_transfer`, `function fsl_spi_cpu_bufs`, `function fsl_spi_bufs`, `function fsl_spi_prepare_message`.
• Atlas domain: Driver Families / drivers/spi.
• 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.