drivers/greybus/interface.c

Source file repositories/reference/linux-study-clean/drivers/greybus/interface.c

File Facts

System
Linux kernel
Corpus path
drivers/greybus/interface.c
Extension
.c
Size
29571 bytes
Lines
1264
Domain
Driver Families
Bucket
drivers/greybus
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.

Dependency Surface

Detected Declarations

Annotated Snippet

ret = device_add(&intf->dev);
	if (ret) {
		dev_err(&intf->dev, "failed to register interface: %d\n", ret);
		return ret;
	}

	trace_gb_interface_add(intf);

	dev_info(&intf->dev, "Interface added (%s)\n",
		 gb_interface_type_string(intf));

	switch (intf->type) {
	case GB_INTERFACE_TYPE_GREYBUS:
		dev_info(&intf->dev, "GMP VID=0x%08x, PID=0x%08x\n",
			 intf->vendor_id, intf->product_id);
		fallthrough;
	case GB_INTERFACE_TYPE_UNIPRO:
		dev_info(&intf->dev, "DDBL1 Manufacturer=0x%08x, Product=0x%08x\n",
			 intf->ddbl1_manufacturer_id,
			 intf->ddbl1_product_id);
		break;
	default:
		break;
	}

	return 0;
}

/* Deregister an interface. */
void gb_interface_del(struct gb_interface *intf)
{
	if (device_is_registered(&intf->dev)) {
		trace_gb_interface_del(intf);

		device_del(&intf->dev);
		dev_info(&intf->dev, "Interface removed\n");
	}
}

void gb_interface_put(struct gb_interface *intf)
{
	put_device(&intf->dev);
}

Annotation

Implementation Notes