drivers/pwm/pwm-dwc.c

File Facts

System

Linux kernel

Corpus path

drivers/pwm/pwm-dwc.c

Extension

.c

Size

4215 bytes

Lines

172

Domain

Driver Families

Bucket

drivers/pwm

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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/bitops.h
• linux/export.h
• linux/kernel.h
• linux/module.h
• linux/pci.h
• linux/pm_runtime.h
• linux/pwm.h
• linux/sizes.h
• pwm-dwc.h

Detected Declarations

• function dwc_pwm_init_one
• function dwc_pwm_probe
• function dwc_pwm_remove
• function dwc_pwm_suspend
• function dwc_pwm_resume

Annotated Snippet

static struct pci_driver dwc_pwm_driver = {
	.name = "pwm-dwc",
	.probe = dwc_pwm_probe,
	.remove = dwc_pwm_remove,
	.id_table = dwc_pwm_id_table,
	.driver = {
		.pm = pm_sleep_ptr(&dwc_pwm_pm_ops),
	},
};

module_pci_driver(dwc_pwm_driver);

MODULE_AUTHOR("Felipe Balbi (Intel)");
MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@linux.intel.com>");
MODULE_AUTHOR("Raymond Tan <raymond.tan@intel.com>");
MODULE_DESCRIPTION("DesignWare PWM Controller");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/bitops.h`, `linux/export.h`, `linux/kernel.h`, `linux/module.h`, `linux/pci.h`, `linux/pm_runtime.h`, `linux/pwm.h`, `linux/sizes.h`.
• Detected declarations: `function dwc_pwm_init_one`, `function dwc_pwm_probe`, `function dwc_pwm_remove`, `function dwc_pwm_suspend`, `function dwc_pwm_resume`.
• Atlas domain: Driver Families / drivers/pwm.
• Implementation status: pattern 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.