drivers/net/ipa/ipa_power.h

File Facts

System

Linux kernel

Corpus path

drivers/net/ipa/ipa_power.h

Extension

.h

Size

1229 bytes

Lines

51

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: implementation source

Status

source 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 or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct device
• struct ipa
• struct ipa_power_data

Annotated Snippet

#ifndef _IPA_POWER_H_
#define _IPA_POWER_H_

#include <linux/types.h>

struct device;

struct ipa;
struct ipa_power_data;

/* IPA device power management function block */
extern const struct dev_pm_ops ipa_pm_ops;

/**
 * ipa_core_clock_rate() - Return the current IPA core clock rate
 * @ipa:	IPA structure
 *
 * Return: The current clock rate (in Hz), or 0.
 */
u32 ipa_core_clock_rate(struct ipa *ipa);

/**
 * ipa_power_retention() - Control register retention on power collapse
 * @ipa:	IPA pointer
 * @enable:	Whether retention should be enabled or disabled
 */
void ipa_power_retention(struct ipa *ipa, bool enable);

/**
 * ipa_power_init() - Initialize IPA power management
 * @dev:	IPA device
 * @data:	Clock configuration data
 *
 * Return:	A pointer to an ipa_power structure, or a pointer-coded error
 */
struct ipa_power *ipa_power_init(struct device *dev,
				 const struct ipa_power_data *data);

/**
 * ipa_power_exit() - Inverse of ipa_power_init()
 * @power:	IPA power pointer
 */
void ipa_power_exit(struct ipa_power *power);

#endif /* _IPA_POWER_H_ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct device`, `struct ipa`, `struct ipa_power_data`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source 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.