drivers/net/wireless/broadcom/b43legacy/leds.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wireless/broadcom/b43legacy/leds.c

Extension

.c

Size

6392 bytes

Lines

231

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.
• 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

• b43legacy.h
• leds.h
• rfkill.h

Detected Declarations

• function Copyright
• function b43legacy_led_turn_off
• function b43legacy_led_brightness_set
• function b43legacy_register_led
• function b43legacy_unregister_led
• function b43legacy_map_led
• function b43legacy_leds_init
• function b43legacy_leds_exit

Annotated Snippet

if (sprom[i] == 0xFF) {
			/* There is no LED information in the SPROM
			 * for this LED. Hardcode it here. */
			activelow = false;
			switch (i) {
			case 0:
				behaviour = B43legacy_LED_ACTIVITY;
				activelow = true;
				if (bus->boardinfo.vendor == PCI_VENDOR_ID_COMPAQ)
					behaviour = B43legacy_LED_RADIO_ALL;
				break;
			case 1:
				behaviour = B43legacy_LED_RADIO_B;
				if (bus->boardinfo.vendor == PCI_VENDOR_ID_ASUSTEK)
					behaviour = B43legacy_LED_ASSOC;
				break;
			case 2:
				behaviour = B43legacy_LED_RADIO_A;
				break;
			case 3:
				behaviour = B43legacy_LED_OFF;
				break;
			default:
				B43legacy_WARN_ON(1);
				return;
			}
		} else {
			behaviour = sprom[i] & B43legacy_LED_BEHAVIOUR;
			activelow = !!(sprom[i] & B43legacy_LED_ACTIVELOW);
		}
		b43legacy_map_led(dev, i, behaviour, activelow);
	}
}

void b43legacy_leds_exit(struct b43legacy_wldev *dev)
{
	b43legacy_unregister_led(&dev->led_tx);
	b43legacy_unregister_led(&dev->led_rx);
	b43legacy_unregister_led(&dev->led_assoc);
	b43legacy_unregister_led(&dev->led_radio);
}

Annotation

• Immediate include surface: `b43legacy.h`, `leds.h`, `rfkill.h`.
• Detected declarations: `function Copyright`, `function b43legacy_led_turn_off`, `function b43legacy_led_brightness_set`, `function b43legacy_register_led`, `function b43legacy_unregister_led`, `function b43legacy_map_led`, `function b43legacy_leds_init`, `function b43legacy_leds_exit`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source 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.