drivers/mtd/spi-nor/core.c

File Facts

System

Linux kernel

Corpus path

drivers/mtd/spi-nor/core.c

Extension

.c

Size

104642 bytes

Lines

3972

Domain

Driver Families

Bucket

drivers/mtd

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.
• 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/cleanup.h
• linux/delay.h
• linux/device.h
• linux/err.h
• linux/errno.h
• linux/math64.h
• linux/module.h
• linux/mtd/mtd.h
• linux/mtd/spi-nor.h
• linux/mutex.h
• linux/of.h
• linux/regulator/consumer.h
• linux/sched/task_stack.h
• linux/sizes.h
• linux/slab.h
• linux/spi/flash.h
• core.h

Detected Declarations

• function spi_nor_get_cmd_ext
• function spi_nor_spimem_setup_op
• function spi_nor_spimem_bounce
• function spi_nor_spimem_exec_op
• function spi_nor_controller_ops_read_reg
• function spi_nor_controller_ops_write_reg
• function spi_nor_controller_ops_erase
• function spi_nor_spimem_read_data
• function spi_nor_read_data
• function spi_nor_spimem_write_data
• function spi_nor_write_data
• function spi_nor_read_any_reg
• function spi_nor_write_any_volatile_reg
• function spi_nor_write_enable
• function spi_nor_write_disable
• function spi_nor_read_id
• function spi_nor_read_sr
• function spi_nor_read_cr
• function spi_nor_set_4byte_addr_mode_en4b_ex4b
• function spi_nor_set_4byte_addr_mode_wren_en4b_ex4b
• function spi_nor_set_4byte_addr_mode_brwr
• function spi_nor_sr_ready
• function spi_nor_use_parallel_locking
• function spi_nor_rww_start_rdst
• function spi_nor_rww_end_rdst
• function spi_nor_lock_rdst
• function spi_nor_unlock_rdst
• function spi_nor_ready
• function spi_nor_wait_till_ready_with_timeout
• function spi_nor_wait_till_ready
• function spi_nor_global_block_unlock
• function spi_nor_write_sr
• function spi_nor_write_sr1_and_check
• function spi_nor_write_16bit_sr_and_check
• function spi_nor_get_protocol_width
• function spi_nor_write_16bit_cr_and_check
• function spi_nor_write_16bit_sr_cr_and_check
• function spi_nor_write_sr_and_check
• function spi_nor_write_sr_cr_and_check
• function spi_nor_write_sr2
• function spi_nor_read_sr2
• function spi_nor_erase_die
• function spi_nor_convert_opcode
• function spi_nor_convert_3to4_read
• function spi_nor_convert_3to4_program
• function spi_nor_convert_3to4_erase
• function spi_nor_has_uniform_erase
• function spi_nor_set_4byte_opcodes

Annotated Snippet

module_init(spi_nor_module_init);

static void __exit spi_nor_module_exit(void)
{
	spi_mem_driver_unregister(&spi_nor_driver);
	spi_nor_debugfs_shutdown();
}
module_exit(spi_nor_module_exit);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Huang Shijie <shijie8@gmail.com>");
MODULE_AUTHOR("Mike Lavender");
MODULE_DESCRIPTION("framework for SPI NOR");

Annotation

• Immediate include surface: `linux/cleanup.h`, `linux/delay.h`, `linux/device.h`, `linux/err.h`, `linux/errno.h`, `linux/math64.h`, `linux/module.h`, `linux/mtd/mtd.h`.
• Detected declarations: `function spi_nor_get_cmd_ext`, `function spi_nor_spimem_setup_op`, `function spi_nor_spimem_bounce`, `function spi_nor_spimem_exec_op`, `function spi_nor_controller_ops_read_reg`, `function spi_nor_controller_ops_write_reg`, `function spi_nor_controller_ops_erase`, `function spi_nor_spimem_read_data`, `function spi_nor_read_data`, `function spi_nor_spimem_write_data`.
• Atlas domain: Driver Families / drivers/mtd.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.