drivers/mtd/maps/pismo.c

File Facts

System

Linux kernel

Corpus path

drivers/mtd/maps/pismo.c

Extension

.c

Size

5910 bytes

Lines

285

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.
• 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/init.h
• linux/module.h
• linux/i2c.h
• linux/slab.h
• linux/platform_device.h
• linux/spinlock.h
• linux/mutex.h
• linux/mtd/physmap.h
• linux/mtd/plat-ram.h
• linux/mtd/pismo.h

Detected Declarations

• struct pismo_cs_block
• struct pismo_eeprom
• struct pismo_mem
• struct pismo_data
• function pismo_set_vpp
• function pismo_width_to_bytes
• function pismo_eeprom_read
• function pismo_add_device
• function pismo_add_nor
• function pismo_add_sram
• function pismo_add_one
• function pismo_remove
• function pismo_probe
• function pismo_init
• function pismo_exit
• module init pismo_init

Annotated Snippet

module_init(pismo_init);

static void __exit pismo_exit(void)
{
	i2c_del_driver(&pismo_driver);
}
module_exit(pismo_exit);

MODULE_AUTHOR("Russell King <linux@arm.linux.org.uk>");
MODULE_DESCRIPTION("PISMO memory driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/i2c.h`, `linux/slab.h`, `linux/platform_device.h`, `linux/spinlock.h`, `linux/mutex.h`, `linux/mtd/physmap.h`.
• Detected declarations: `struct pismo_cs_block`, `struct pismo_eeprom`, `struct pismo_mem`, `struct pismo_data`, `function pismo_set_vpp`, `function pismo_width_to_bytes`, `function pismo_eeprom_read`, `function pismo_add_device`, `function pismo_add_nor`, `function pismo_add_sram`.
• Atlas domain: Driver Families / drivers/mtd.
• Implementation status: integration implementation candidate.

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.