drivers/mmc/core/pwrseq.h

File Facts

System

Linux kernel

Corpus path

drivers/mmc/core/pwrseq.h

Extension

.h

Size

1601 bytes

Lines

59

Domain

Driver Families

Bucket

drivers/mmc

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 mmc_host
• struct device
• struct module
• struct mmc_pwrseq_ops
• struct mmc_pwrseq
• function mmc_pwrseq_register
• function mmc_pwrseq_unregister
• function mmc_pwrseq_pre_power_on

Annotated Snippet

struct mmc_pwrseq_ops {
	void (*pre_power_on)(struct mmc_host *host);
	void (*post_power_on)(struct mmc_host *host);
	void (*power_off)(struct mmc_host *host);
	void (*reset)(struct mmc_host *host);
};

struct mmc_pwrseq {
	const struct mmc_pwrseq_ops *ops;
	struct device *dev;
	struct list_head pwrseq_node;
	struct module *owner;
};

#ifdef CONFIG_OF

int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq);
void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq);

int mmc_pwrseq_alloc(struct mmc_host *host);
void mmc_pwrseq_pre_power_on(struct mmc_host *host);
void mmc_pwrseq_post_power_on(struct mmc_host *host);
void mmc_pwrseq_power_off(struct mmc_host *host);
void mmc_pwrseq_reset(struct mmc_host *host);
void mmc_pwrseq_free(struct mmc_host *host);

#else

static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq)
{
	return -ENOSYS;
}
static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {}
static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_power_off(struct mmc_host *host) {}
static inline void mmc_pwrseq_reset(struct mmc_host *host) {}
static inline void mmc_pwrseq_free(struct mmc_host *host) {}

#endif

#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct mmc_host`, `struct device`, `struct module`, `struct mmc_pwrseq_ops`, `struct mmc_pwrseq`, `function mmc_pwrseq_register`, `function mmc_pwrseq_unregister`, `function mmc_pwrseq_pre_power_on`.
• Atlas domain: Driver Families / drivers/mmc.
• 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.