drivers/net/wireless/realtek/rtw88/regd.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wireless/realtek/rtw88/regd.c

Extension

.c

Size

20957 bytes

Lines

542

Domain

Driver Families

Bucket

drivers/net

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• main.h
• regd.h
• debug.h
• phy.h

Detected Declarations

• struct rtw_regd_alternative_t
• function rtw_regd_apply_hw_cap_flags
• function rtw_reg_is_ww
• function rtw_reg_match
• function rtw_regd_init
• function rtw_regd_hint
• function rtw_regd_mgmt_worldwide
• function rtw_regd_mgmt_programmed
• function rtw_regd_mgmt_setting
• function rtw_regd_state_hdl
• function rtw_regd_notifier
• function rtw_regd_get
• function rtw_regd_srrc
• function rtw_regd_has_alt
• export rtw_regd_get
• export rtw_regd_srrc

Annotated Snippet

struct rtw_regd_alternative_t {
	bool set;
	u8 alt;
};

#define DECL_REGD_ALT(_regd, _regd_alt) \
	[(_regd)] = {.set = true, .alt = (_regd_alt)}

static const struct rtw_regd_alternative_t
rtw_regd_alt[RTW_REGD_MAX] = {
	DECL_REGD_ALT(RTW_REGD_IC, RTW_REGD_FCC),
	DECL_REGD_ALT(RTW_REGD_KCC, RTW_REGD_ETSI),
	DECL_REGD_ALT(RTW_REGD_ACMA, RTW_REGD_ETSI),
	DECL_REGD_ALT(RTW_REGD_CHILE, RTW_REGD_FCC),
	DECL_REGD_ALT(RTW_REGD_UKRAINE, RTW_REGD_ETSI),
	DECL_REGD_ALT(RTW_REGD_MEXICO, RTW_REGD_FCC),
	DECL_REGD_ALT(RTW_REGD_CN, RTW_REGD_ETSI),
	DECL_REGD_ALT(RTW_REGD_QATAR, RTW_REGD_ETSI),
	DECL_REGD_ALT(RTW_REGD_UK, RTW_REGD_ETSI),
};

bool rtw_regd_has_alt(u8 regd, u8 *regd_alt)
{
	if (!rtw_regd_alt[regd].set)
		return false;

	*regd_alt = rtw_regd_alt[regd].alt;
	return true;
}

Annotation

• Immediate include surface: `main.h`, `regd.h`, `debug.h`, `phy.h`.
• Detected declarations: `struct rtw_regd_alternative_t`, `function rtw_regd_apply_hw_cap_flags`, `function rtw_reg_is_ww`, `function rtw_reg_match`, `function rtw_regd_init`, `function rtw_regd_hint`, `function rtw_regd_mgmt_worldwide`, `function rtw_regd_mgmt_programmed`, `function rtw_regd_mgmt_setting`, `function rtw_regd_state_hdl`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.