drivers/net/dsa/microchip/ksz8863_smi.c

Source file repositories/reference/linux-study-clean/drivers/net/dsa/microchip/ksz8863_smi.c

File Facts

System
Linux kernel
Corpus path
drivers/net/dsa/microchip/ksz8863_smi.c
Extension
.c
Size
4953 bytes
Lines
227
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.

Dependency Surface

Detected Declarations

Annotated Snippet

if (IS_ERR(dev->regmap[i])) {
			return dev_err_probe(&mdiodev->dev,
					     PTR_ERR(dev->regmap[i]),
					     "Failed to initialize regmap%i\n",
					     ksz8863_regmap_config[i].val_bits);
		}
	}

	if (mdiodev->dev.platform_data)
		dev->pdata = mdiodev->dev.platform_data;

	ret = ksz_switch_register(dev);

	/* Main DSA driver may not be started yet. */
	if (ret)
		return ret;

	dev_set_drvdata(&mdiodev->dev, dev);

	return 0;
}

static void ksz8863_smi_remove(struct mdio_device *mdiodev)
{
	struct ksz_device *dev = dev_get_drvdata(&mdiodev->dev);

	if (dev)
		ksz_switch_remove(dev);
}

static void ksz8863_smi_shutdown(struct mdio_device *mdiodev)
{
	struct ksz_device *dev = dev_get_drvdata(&mdiodev->dev);

	if (dev)
		dsa_switch_shutdown(dev->ds);

	dev_set_drvdata(&mdiodev->dev, NULL);
}

static const struct of_device_id ksz8863_dt_ids[] = {
	{
		.compatible = "microchip,ksz8863",
		.data = &ksz_switch_chips[KSZ88X3]
	},
	{
		.compatible = "microchip,ksz8873",
		.data = &ksz_switch_chips[KSZ88X3]
	},
	{ },
};
MODULE_DEVICE_TABLE(of, ksz8863_dt_ids);

static struct mdio_driver ksz8863_driver = {
	.probe	= ksz8863_smi_probe,
	.remove	= ksz8863_smi_remove,
	.shutdown = ksz8863_smi_shutdown,
	.mdiodrv.driver = {
		.name	= "ksz8863-switch",
		.of_match_table = ksz8863_dt_ids,
	},
};

mdio_module_driver(ksz8863_driver);

MODULE_AUTHOR("Michael Grzeschik <m.grzeschik@pengutronix.de>");
MODULE_DESCRIPTION("Microchip KSZ8863 SMI Switch driver");
MODULE_LICENSE("GPL v2");

Annotation

Implementation Notes