drivers/net/mdio/mdio-i2c.c

Source file repositories/reference/linux-study-clean/drivers/net/mdio/mdio-i2c.c

File Facts

System
Linux kernel
Corpus path
drivers/net/mdio/mdio-i2c.c
Extension
.c
Size
12490 bytes
Lines
560
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.

Dependency Surface

Detected Declarations

Annotated Snippet

if (ret < 0) {
			if (ret != -ENODEV)
				dev_err(parent,
					"Cannot initialize RollBall MDIO I2C protocol: %d\n",
					ret);
			mdiobus_free(mii);
			return ERR_PTR(ret);
		}

		mii->read_c45 = i2c_mii_read_rollball;
		mii->write_c45 = i2c_mii_write_rollball;
		break;
	default:
		mii->read = i2c_mii_read_default_c22;
		mii->write = i2c_mii_write_default_c22;
		mii->read_c45 = i2c_mii_read_default_c45;
		mii->write_c45 = i2c_mii_write_default_c45;
		break;
	}

	return mii;
}
EXPORT_SYMBOL_GPL(mdio_i2c_alloc);

MODULE_AUTHOR("Russell King");
MODULE_DESCRIPTION("MDIO I2C bridge library");
MODULE_LICENSE("GPL v2");

Annotation

Implementation Notes