drivers/char/tpm/tpm_tis.c

File Facts

System

Linux kernel

Corpus path

drivers/char/tpm/tpm_tis.c

Extension

.c

Size

10520 bytes

Lines

436

Domain

Driver Families

Bucket

drivers/char

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/moduleparam.h
• linux/pnp.h
• linux/slab.h
• linux/interrupt.h
• linux/wait.h
• linux/acpi.h
• linux/freezer.h
• linux/of.h
• linux/kernel.h
• tpm.h
• tpm_tis_core.h

Detected Declarations

• struct tpm_info
• struct tpm_tis_tcg_phy
• function tpm_tis_flush
• function tpm_tis_iowrite8
• function tpm_tis_iowrite32
• function has_hid
• function is_itpm
• function is_itpm
• function check_acpi_tpm2
• function check_acpi_tpm2
• function tpm_tcg_read_bytes
• function tpm_tcg_write_bytes
• function tpm_tis_init
• function tpm_tis_pnp_init
• function tpm_tis_pnp_remove
• function tpm_tis_plat_probe
• function tpm_tis_plat_remove
• function tpm_tis_force_device
• function init_tis
• function cleanup_tis
• module init init_tis

Annotated Snippet

module_init(init_tis);
module_exit(cleanup_tis);
MODULE_AUTHOR("Leendert van Doorn <leendert@watson.ibm.com>");
MODULE_DESCRIPTION("TPM Driver");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/init.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/pnp.h`, `linux/slab.h`, `linux/interrupt.h`, `linux/wait.h`, `linux/acpi.h`.
• Detected declarations: `struct tpm_info`, `struct tpm_tis_tcg_phy`, `function tpm_tis_flush`, `function tpm_tis_iowrite8`, `function tpm_tis_iowrite32`, `function has_hid`, `function is_itpm`, `function is_itpm`, `function check_acpi_tpm2`, `function check_acpi_tpm2`.
• Atlas domain: Driver Families / drivers/char.
• 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.